• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    APPARATUS AND METHOD FOR COOLING WATER IN CLOSED CIRCULATION. It is a closed circulation water cooling apparatus and method. The cooling apparatus comprises: an internal cooling apparatus, a plate heat exchanger (7), an auxiliary thermal ice storage cooling apparatus. The internal cooling apparatus comprises an air cooler (3). The thermal ice storage auxiliary cooling apparatus comprises a thermal ice storage apparatus (9). The internal cooling water circulating through the plate heat exchanger (7) from the internal cooling device exchanges heat with the external cooling water circulating through the plate heat exchanger (7) from the cooling device thermal ice storage aid. The use of the apparatus and method of cooling water in closed circulation enables greater cooling capacity of the cooling apparatus, when the ambient temperature exceeds the maximum water inflow temperature allowed by a unit of technical equipment, allows the cooling apparatus to still provide sufficient cooling capacity, and that the equipment eliminates any water loss during operation, thus achieving the goal of water conservation.(...).
    公开号:BR112014013288B1
    申请号:R112014013288-7
    申请日:2012-05-29
    公开日:2021-08-24
    发明作者:Yigong Ding；Weizheng Yao；Jian Zhang；Weihua Ruan；Dawei Wang
    申请人:State Grid Corporation Of China；Xuchang Xuji Jing Rui Science & Technology Co., Ltd；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [001] The present invention relates to the field of cooling apparatus, and more particularly, to a closed circulating water cooling apparatus and method thereof in which the cooling water circulating through an air cooler is again cooled by a plate heat exchanger. BACKGROUND OF THE INVENTION
    [002] Nowadays, many power plants and power transmission stations, such as converter stations, are established in dry and water-scarce regions of northern China, where due to the high ambient temperature and significant evaporation of water in summer, water resources are more precious. However, if equipment in power plants and power transmission stations, such as converter stations, are cooled with traditional water-cooling methods, the scarce water resources in these regions can be depleted. Thus, all cooling equipment commonly used in these power plants uses air coolers. Since converter stations are always located in geographical positions that have a relatively lower ambient temperature, the use of air coolers can meet the need for cooling a converter valve, which is a type of processing equipment used in power plants , and satisfied cooling effects can be achieved.
    [003] However, some regions may have a high temperature such that air coolers cannot cool the fluid to room temperature, thus limiting the application of air coolers in such dry regions. For example, in some places in northwestern China, the most extreme ambient temperature can reach 44 °C, while the highest inlet valve temperature that is allowed by a converter valve as core equipment of DC transmission projects is only 40 °C. In this situation, the pure water used for the converter valve cannot be cooled by the air coolers. The opposite may occur, ie air coolers can heat the cooling water. Thus, it is not suitable only to adapt the air coolers in this situation.
    [004] In addition, since power generation and power transmission equipment generally come into maximum operating conditions on the hottest days of summer when the ambient temperature reaches its most extreme value, air coolers often may not provide sufficient cooling capacity in this case. As a result, converter stations have to operate with reduced payloads as well as reduced energy levels, which can cause considerable economic loss and an adverse effect on the development of the national economy. SUMMARY
    [005] In view of this, a technical problem to be solved by the invention is to provide a cooling device and improve cooling thereof.
    [006] A closed circulation water cooling apparatus comprises an internal cooling apparatus, a plate heat exchanger 7 and an auxiliary thermal ice storage cooling apparatus, wherein the internal cooling apparatus comprises a circulation pump internal cooling 2 and an air cooler 3; the auxiliary thermal ice storage cooling apparatus comprises an external cooling circulating pump 8 and a thermal ice storage apparatus 9, wherein heat is exchanged between the internal cooling water in the internal cooling apparatus circulating through the exchanger plate heat exchanger 7 and the external cooling water in the thermal ice storage auxiliary cooling apparatus circulating through the plate heat exchanger 7.
    [007] According to an embodiment of the apparatus of the present invention, the internal cooling apparatus further comprises a first circuit valve 4 and second circuit valves 5, 6; in the state where the first circuit valve 4 is open and the second circuit valves 5, 6 are closed the air cooler 3 and a device to be cooled 1 form a first circuit in which the internal cooling water circulates; in the state that the first circuit valve 4 is closed and the second circuit valves 5, 6 are open, the device to be cooled 1, the air cooler 3 and the plate heat exchanger 7 form a second circuit in which internal cooling water circulates.
    [008] According to an embodiment of the apparatus of the present invention, when the ambient temperature is less than a threshold temperature T1, the thermal ice storage auxiliary cooling apparatus stops operation and the internal cooling water circulates in the first circuit, in which the internal cooling water is cooled by passing through the air cooler 3, and then additionally used to cool the device to be cooled 1; when the ambient temperature is greater than T1, but less than a temperature threshold T2, the first circuit valve 4 is closed and the second circuit valves 5, 6 are opened, the internal cooling water circulates in the second circuit, in that the internal cooling water is cooled by the external cooling water as it passes through the plate heat exchanger 7, and then it is additionally used to cool the device to be cooled 1; thermal ice storage cooling apparatus 9 operates and performs cooling-storage at night; when the ambient temperature is greater than T2, and less than a temperature threshold T3, the first circuit valve 4 is closed and the second circuit valves 5, 6 are opened, the internal water circulates in the second circuit, in which the Internal cooling water is cooled as it passes through the air cooler 3, and then it is further cooled by the external cooling water as it passes through the plate heat exchanger 7, and the additionally cooled internal cooling water is used to cool the device to be cooled 1; the thermal ice storage apparatus (9) operates and performs cooling-storage at night; where T1 is less than T2 and T2 is less than T3.
    [009] According to an embodiment of the apparatus of the present invention, the internal cooling apparatus further comprises a water temperature sensor and/or an ambient temperature sensor, and a control unit to control the opening and closing of the first circuit valve 4 and the second circuit valves 5, 6 according to an internal cooling water water temperature that is measured by the water temperature sensor and/or with an ambient temperature that is measured by the ambient temperature sensor .
    [010] According to an embodiment of the apparatus of the present invention, the internal cooling circulation pump 2 and the external cooling circulation pump 8 are in a primary-auxiliary redundancy configuration.
    [011] According to an embodiment of the apparatus of the present invention, the internal cooling circulation pump 2 and the external cooling circulation pump 8 are in a primary-auxiliary redundancy configuration.
    [012] According to an embodiment of the apparatus of the present invention, the device to be cooled 1 is a converter valve provided in a DC power transmission equipment.
    [013] The cooling apparatus of the present invention adopts a cooling-storage conditioning equipment in connection with a plate heat exchanger to re-cool the internal cooling water passing through an air cooler so as to improve the capacity of the cooling device's cooling unit. The problem that the air cooler cannot cool the fluid to room temperature and below room temperature can be solved. Furthermore, since no water is lost during device operation, the water saving objective can be achieved.
    [014] A technical problem to be solved by the present invention is to provide a cooling method to improve the cooling capacity of a cooling apparatus.
    [015] A closed circulation water cooling method comprises: cooling a device to be cooled 1 with internal cooling water in an internal cooling apparatus, the internal cooling water passing through a plate heat exchanger 6 and exchanging heat with the external cooling water in an auxiliary thermal ice storage cooling apparatus circulating through the plate heat exchanger 6, wherein the internal cooling apparatus comprises an internal cooling circulating pump 2 and an air cooler 3 ; the auxiliary thermal ice storage cooling apparatus comprises an external cooling circulating pump 8 and a thermal ice storage apparatus 9.
    [016] According to an embodiment of the method of the present invention, the method comprises opening a first circuit valve 4 and closing the second circuit valves 5, 6, the air cooler 3 and the device to be cooled 1 forming a first circuit in which the internal cooling water circulates; close the first circuit valve 4 and open the second circuit valves 5, 6, the device to be cooled 1, the air cooler 3 and the plate heat exchanger 7 forming a second circuit in which the internal cooling water circulates ; the plate heat exchanger 7 and the thermal storage apparatus 9 forming a circulation circuit for the external cooling circulating water, and the external cooling water circulating in the circulating circuit for the externally cooling circulating water.
    [017] According to an embodiment of the method of the present invention, when the ambient temperature is less than a threshold temperature T1, the thermal ice storage auxiliary cooling apparatus stops operation and the internal cooling water circulates in the first circuit, in which the internal cooling water is cooled by passing through the air cooler 3, and then additionally used to cool the device to be cooled 1; when the ambient temperature is greater than T1, and less than a temperature threshold T2, the first circuit valve 4 is closed and the second circuit valves 5, 6 are opened, the internal cooling water circulates in the second circuit, in that the internal cooling water is cooled by the external cooling water as it passes through the plate heat exchanger 7, and then it is additionally used to cool the device to be cooled 1; thermal ice storage cooling apparatus 9 operates and performs cooling-storage at night; when the ambient temperature is greater than T2, and less than a temperature threshold T3, the first circuit valve 4 is closed and the second circuit valves 5, 6 are opened, the internal water circulates in the second circuit, in which the Internal cooling water is cooled as it passes through the air cooler 3, and then it is further cooled by the external cooling water as it passes through the plate heat exchanger 7, and the additionally cooled internal cooling water is used to cool the device to be cooled 1; the thermal ice storage apparatus 9 operates and performs cooling-storage at night; where T1 is less than T2 and T2 is less than T3.
    [018] According to an embodiment of the method of the present invention, the internal cooling apparatus is additionally provided with a water temperature sensor and/or an ambient temperature sensor, and a control unit controls the opening and closing of the first circuit valve 4 and second circuit valves 5, 6 according to an internal cooling water water temperature that is measured by the water temperature sensor and/or with an ambient temperature that is measured by the temperature sensor environment.
    [019] According to an embodiment of the method of the present invention, the internal cooling circulation pump 2 and the external cooling circulation pump 8 are in a master-slave configuration.
    [020] According to an embodiment of the method of the present invention, the device to be cooled 1 is a converter valve provided in a DC power transmission equipment.
    [021] The method of the present invention adopts a cooling-storage conditioning equipment in connection with a plate heat exchanger to re-cool the internal cooling water passing through an air cooler so as to improve the cooling capacity of the cooling device. The problem that the air cooler cannot cool the fluid to room temperature and below room temperature can be solved. Furthermore, since no water is lost during device operation, the water saving objective can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
    [022] The accompanying drawings, which form a part of the descriptive report, provide further understanding of the present invention. Illustrative embodiments of the present invention and its illustrations are presented for the purpose of illustrating the invention, and which are not limiting the invention, in the figures:
    [023] Fig. 1 is a schematic diagram of an embodiment of the cooling apparatus according to the present invention;
    [024] Fig. 2 is a schematic diagram of an operational state of an embodiment of the cooling apparatus according to the present invention;
    [025] Fig. 3 is a schematic diagram of another operational state of an embodiment of the cooling apparatus according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
    [026] The cooling apparatus and method of the present invention adopts a storage-cooling conditioning equipment in connection with a plate heat exchanger to re-cool the internal cooling water passing through an air cooler, so as to improve the cooling capacity of the cooling apparatus.
    [027] A description of the technical solution of the present invention will be presented in terms of several aspects below with reference to the drawings and embodiments.
    [028] Fig. 1 is a schematic diagram of an embodiment of the cooling apparatus according to the present invention. As shown in Fig. 1, the internal cooling apparatus comprises: an internal cooling circulation pump 2, an air cooler 3, a first circuit valve 4, two second circuit valves 5 and 6; the auxiliary cooling apparatus comprises: an external cooling circulation pump 8 and a thermal ice storage apparatus 9. A circuit is formed by the air cooler 3 and the device to be cooled 1 when the first circuit valve 4 is opened and the second circuit valves 5, 6 are closed. The internal cooling water is fed by the internal cooling circulation pump 2 to circulate in the circuit, where the internal cooling water is cooled by passing through the air cooler 3 and then used to cool the device to be cooled 1.
    [029] A circuit is formed by the device to be cooled 1, the air cooler 3 and the plate heat exchanger 7 when the first circuit valve 4 is closed, and the second circuit valves 5, 6 are opened. The internal cooling water is fed by the internal cooling circulation pump 2 to circulate in the circuit, where the internal cooling water is cooled by passing through the air cooler 3, which is additionally cooled by entering the plate heat exchanger 7 and then used to cool the device to be cooled 1.
    [030] External cooling circulating water is fed by external cooling circulating pump 8 to circulate in a circuit formed by plate heat exchanger 7 and thermal ice storage apparatus 9, wherein the thermal storage apparatus 9 ice cube is used to cool the circulating water of external cooling.
    [031] According to an embodiment of the present invention, there may be a second circuit valve provided at the outlet or inlet of the plate heat exchanger 7. There may be two second circuit valves provided at the outlet and inlet of the plate heat exchanger. plates 7, respectively.
    [032] According to an embodiment of the present invention, the auxiliary thermal ice storage cooling apparatus 9 produces and stores the cooling with electric cooling technology. The device to be cooled 1 is a converter valve provided in a DC power transmission equipment, and the internal cooling water is pure water.
    [033] According to one embodiment of the present invention, the internal cooling water is heated by the converter valve and then is driven by the internal cooling circulation pump 2 to pass through the plate heat exchanger 7, where the cooling water internal is cooled. The cooled internal cooling water is driven by internal cooling circulation pump 2 so as to be conveyed back to the converter valve, and circulates in cycles in this way.
    [034] In case of a relatively higher ambient temperature, the first circuit valve 4 is closed and the two second circuit valves 5 and 6 are opened. The internal cooling water having some heat dissipated by the air cooler is additionally cooled by the plate heat exchanger 7 to be within a temperature range allowed by industry equipment. The plate heat exchanger 7 adopts the thermal ice storage apparatus 9 to dissipate the collected heat.
    [035] According to an embodiment of the present invention, the first circuit valve 4 and the second circuit valves 5, 6 can be automatic or manual valves.
    [036] The indoor cooling apparatus additionally comprises a control unit which is not illustrated in Fig. 1. When the indoor cooling water temperature is greater than a threshold or the ambient temperature is greater than a threshold, the unit control closes the first circuit valve 4 and opens the second circuit valves 5, 6. The internal cooling apparatus is provided with a water temperature sensor and/or an ambient temperature sensor to measure the temperature of the cooling water internal and the temperature of the environment.
    [037] According to an embodiment of the present invention, the internal cooling circulation pump 2 and the external cooling circulation pump 8 may be in a primary-auxiliary redundancy configuration to improve the operating safety and reliability of the apparatus of cooling.
    [038] Fig. 2 is a schematic diagram of an operational state of an embodiment of the cooling apparatus according to the present invention. As illustrated in Fig. 2, the internal cooling apparatus comprises: an internal cooling circulation pump 2, an air cooler 3, in which a circuit is formed by the device to be cooled 1 and the air cooler 3. The water The internal cooling water is fed by the internal cooling circulation pump 2 to circulate in the circuit, where the internal cooling water is cooled by passing through the air cooler 3 and then used to cool the device to be cooled 1. The water The internal cooling system cycles in this way.
    [039] Fig. 3 is a schematic diagram of another operational state of an embodiment of the cooling apparatus according to the present invention. As illustrated in Fig. 3, the internal cooling apparatus comprises: an internal cooling circulating pump 2, an air cooler 3; the auxiliary cooling apparatus comprises: an external cooling circulating pump 8 and a thermal ice storage apparatus 9, wherein external cooling circulating water is fed by external cooling circulating pump 8 to circulate in a formed circuit by the plate heat exchanger 7 and by the thermal ice storage apparatus 9, wherein the thermal ice storage apparatus 9 is used to cool the external cooling circulating water.
    [040] A circuit is formed by the device to be cooled 1, the air cooler 3 and the plate heat exchanger 7. The internal cooling water is fed by the internal cooling circulation pump 2 to circulate in the circuit, in which the internal cooling water is cooled by passing through the air cooler 3, which is further cooled by entering the plate heat exchanger 7 and then used to cool the device to be cooled 1. The heat is exchanged between the water from internal cooling circulating through the plate heat exchanger 7 and the external cooling water circulating through the plate heat exchanger 7, and the internal cooling water circulates in cycles in this way.
    [041] It can be seen, from the content described above, that all water circulates in a closed way inside the equipment without any loss or waste of water, presenting a characteristic of zero water loss.
    [042] According to an embodiment of the present invention, when the ambient temperature is less than a threshold temperature T1, where the value of T1 is determined depending on the design capability of the air cooler 3, which is generally - 5°C to 25°C, air cooler 3 is sufficient to satisfy the cooling capacity requirement. In this mode, the auxiliary thermal ice storage cooling apparatus stops operation, the first circuit valve 4 is opened and the second circuit valves 5, 6 are closed so that the air cooler 3 and the device to be cooled 1 form a first circuit in which the internal cooling water circulates. The internal cooling water is cooled by passing through the air cooler 3 and then used to cool the device to be cooled 1. The internal cooling circulation pump 2 is in its operational state. In such an operating mode, the maximum power consumption of a typical cooling system assembly is when 2/3 of the air cooler 3 fans are operating at their maximum speed (ie, their maximum power consumption is 176 kW in that mode).
    [043] When the ambient temperature is greater than T1 but less than a threshold temperature T2, the temperature value T1 is the same as above mode, and T2 is determined based on the design margin of the air cooler, and the larger the margin, the higher the T2 temperature. In general, the T2 value is less than the highest extreme ambient temperature by approximately 3 °C to 8 °C (T2 is typically 30 °C to 38 °C). In this mode, the thermal ice storage apparatus starts and performs the storage-cooling at night, and by day, the plate heat exchanger uses the storage-cooling at night to absorb the heat. The first circuit valve 4 is closed and the second circuit valves 5, 6 are opened, so that the device to be cooled 1, the air cooler 3 and the plate heat exchanger 7 form a second circuit in which the internal cooling water circulates. The internal cooling water passes through the plate heat exchanger 7 and is cooled by the external cooling water, and is then used to cool the device to be cooled 1. The thermal ice storage apparatus 9 operates and performs the cooling- storage at night. Air cooler 3 may or may not operate. If the temperature at night falls below the temperature threshold T1, the first circuit valve 4 is opened and the second circuit valves 5 and 6 are closed, so that the air cooler 3 and the device to be cooled 1 form a circuit in which the internal cooling water circulates. In such a mode of operation, the maximum power consumption of the external cooling equipment of a typical converter valve cooling system assembly is approximately equal to when 2/3 of the air cooler fans are operating at their full speed.
    [044] When the ambient temperature is greater than T2, but less than a threshold temperature T3, the temperature value T2 is the same as above mode, T3 is the highest extreme ambient temperature, which is usually 38 °C at 45°C. In this mode, it is necessary to start the storage-cooling air conditioning equipment to perform storage-cooling at night, and by day, the plate heat exchanger uses the stored cooling to absorb heat. The air cooler 3 substantially operates at full speed during the day, and the plate heat exchanger and external cooling primary circulation pump are also in their operational state. The first circuit valve 4 is closed and the second circuit valves 5, 6 are opened, so that the device to be cooled 1, the air cooler 3 and the plate heat exchanger 7 form a second circuit in which the internal cooling water circulates. The internal cooling water is cooled by passing through the air cooler 3, and it is additionally cooled by the external cooling water by passing through the plate heat exchanger 7, and the additionally cooled internal cooling water is used to cool the device to be cooled 1. The thermal ice storage apparatus 9 operates and performs cooling-storage at night. In such a mode of operation, the maximum power consumption of a cooling system assembly is generally 319kW.
    [045] The apparatus and method of cooling of the present invention can solve the problem that the air cooler cannot cool the fluid to room temperature and below room temperature. When the ambient temperature is greater than or equal to a maximum inlet water temperature that is allowed by the process equipment, the cooling water may not be cooled by the air cooler at once. The opposite may occur, ie the air cooler can heat the cooling water. The cooling apparatus of the present invention still has sufficient cooling capacity to satisfy the operating requirement of the process equipment. There is no loss of water during the operation of the cooling apparatus of the invention, so that the objective of saving water can be achieved and the disadvantage of intensive water consumption caused by the cooling towers can be overcome. Storage-cooling air conditioning equipment is used to perform storage-cooling at night when the cooling apparatus has less energy consumption, and during the day, the stored cooling is used to absorb heat, so that loads of energy can be distributed evenly. In addition, different operating modes can be selected depending on different ambient temperatures to ensure minimum power consumption of the device.
    [046] Finally, it should be noted that the above embodiments are presented with the aim of illustrating the technical solution of the present invention, not constituting a limitation to it. Although the present invention has been described in detail according to preferred embodiments, those skilled in the art can understand that modifications and substitutions can be made in some technical aspects of these specific embodiments without departing from the spirit of the present invention, which therefore should be encompassed within the scope claimed by the present invention.
    权利要求:
    Claims (6)
    [0001]
    1. Closed circulation water cooling apparatus, comprising: an internal cooling apparatus, a plate heat exchanger (7) and an auxiliary thermal ice storage cooling apparatus, wherein the internal cooling apparatus comprises an internal cooling circulation pump (2) and an air cooler (3); the auxiliary thermal ice storage cooling apparatus comprises an external cooling circulating pump (8) and a thermal ice storage apparatus (9), in which heat is exchanged between the internal cooling water in the internal cooling apparatus circulating through the plate heat exchanger (7) and the external cooling water in the auxiliary thermal ice storage cooling apparatus circulating through the plate heat exchanger (7); and the internal cooling apparatus further comprises a first circuit valve (4) and second circuit valves (5, 6); in the state that the first circuit valve (4) is open and the second circuit valves (5, 6) are closed, the air cooler (3) and a device to be cooled (1) form a first circuit in which internal cooling water circulates; in the state where the first circuit valve (4) is closed and the second circuit valves (5, 6) are open, the device to be cooled (1), the air cooler (3) and the heat exchanger of plates (7) form a second circuit in which the internal cooling water circulates; an external cooling water circulation circuit is formed by the plate heat exchanger (7) and the thermal ice storage apparatus (9); CHARACTERIZED by the fact that when an ambient temperature is less than a threshold temperature T1, the thermal ice storage auxiliary cooling apparatus stops operation and the internal cooling water circulates in the first circuit, in which the internal cooling water is cooled by passing through the air cooler (3), and then additionally used to cool the device to be cooled (1); when the ambient temperature is greater than T1, but less than a temperature threshold T2, the first circuit valve (4) is closed and the second circuit valves (5, 6) are opened, the internal cooling water circulates in the second circuit, in which the internal cooling water is cooled by the external cooling water as it passes through the plate heat exchanger (7), and then is further used to cool the device to be cooled (1); the thermal ice storage cooling apparatus (9) operates and performs cooling-storage at night; when the ambient temperature is greater than T2, and less than a temperature threshold T3, the first circuit valve (4) is closed and the second circuit valves (5, 6) are opened, the internal water circulates in the second circuit , in which the internal cooling water is cooled as it passes through the air cooler (3), and then is further cooled by the external cooling water as it passes through the plate heat exchanger (7), and the internal cooling water is used to cool the device to be cooled (1); the thermal ice storage apparatus (9) operates and performs cooling-storage at night; where T1 is less than T2 and T2 is less than T3; and the internal cooling apparatus further comprises a water temperature sensor and/or an ambient temperature sensor, and a control unit for controlling the opening and closing of the first circuit valve (4) and the second circuit valves ( 5, 6) according to an internal cooling water water temperature which is measured by the water temperature sensor and/or with an ambient temperature which is measured by the ambient temperature sensor.
    [0002]
    2. Apparatus, according to claim 1, CHARACTERIZED by the fact that the internal cooling circulation pump (2) and the external cooling circulation pump (8) are in a primary-auxiliary redundancy configuration.
    [0003]
    3. Apparatus, according to claim 1, CHARACTERIZED by the fact that the device to be cooled (1) is a converter valve provided in a DC power transmission equipment.
    [0004]
    4. Closed circulation water cooling method, comprising: cooling a device to be cooled (1) with internal cooling water in an internal cooling apparatus, the internal cooling water passing through a plate heat exchanger (7 ) and exchanging heat with the external cooling water in an auxiliary thermal ice storage cooling apparatus circulating through the plate heat exchanger (7), wherein the internal cooling apparatus comprises an internal cooling circulating pump (2 ) and an air cooler (3); the auxiliary thermal ice storage cooling apparatus comprises an external cooling circulation pump (8) and a thermal ice storage apparatus (9); wherein the method further comprises: opening a first circuit valve (4) and closing the second circuit valves (5, 6), the air cooler (3) and the device to be cooled (1) forming a first circuit in the which internal cooling water circulates; close the first circuit valve (4) and open the second circuit valves (5, 6), the device to be cooled (1), the air cooler (3) and the plate heat exchanger (7) forming a second circuit in which the internal cooling water circulates; the plate heat exchanger (7) and the thermal storage apparatus (9) forming a circulation circuit for the external cooling circulating water, and the external cooling water circulating in the circulating circuit for the cooling circulating water external; CHARACTERIZED by the fact that when an ambient temperature is lower than a threshold temperature T1, the thermal ice storage auxiliary cooling apparatus stops operation and the internal cooling water circulates in the first circuit, in which the ice water internal cooling is cooled by passing through the air cooler (3), and then additionally used to cool the device to be cooled (1); when the ambient temperature is greater than T1, and less than a temperature threshold T2, the first circuit valve (4) is closed and the second circuit valves (5, 6) are opened, the internal cooling water circulates in the second circuit, in which the internal cooling water is cooled by the external cooling water as it passes through the plate heat exchanger (7), and then is further used to cool the device to be cooled (1); the thermal ice storage cooling apparatus (9) operates and performs cooling-storage at night; when the ambient temperature is greater than T2, and less than a temperature threshold T3, the first circuit valve (4) is closed and the second circuit valves (5, 6) are opened, the internal water circulates in the second circuit , in which the internal cooling water is cooled as it passes through the air cooler (3), and then is further cooled by the external cooling water as it passes through the plate heat exchanger (7), and the internal cooling water is used to cool the device to be cooled (1); the thermal ice storage apparatus (9) operates and performs cooling-storage at night; where T1 is less than T2 and T2 is less than T3; and the internal cooling apparatus is additionally provided with a water temperature sensor and/or an ambient temperature sensor, and a control unit controls the opening and closing of the first circuit valve (4) and the second circuit valves (5, 6) according to an internal cooling water water temperature that is measured by the water temperature sensor and/or with an ambient temperature that is measured by the room temperature sensor.
    [0005]
    5. Method according to claim 4, CHARACTERIZED by the fact that the internal cooling circulation pump (2) and the external cooling circulation pump (8) are in a primary-auxiliary redundancy configuration.
    [0006]
    6. Method according to claim 4, CHARACTERIZED by the fact that the device to be cooled (1) is a converter valve provided in a DC power transmission equipment.
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    BR112014013288A2|2017-06-13|
    US20150237766A1|2015-08-20|
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    CN102435032A|2012-05-02|
    AP2014007682A0|2014-06-30|
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-12-29| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-06-01| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    2021-07-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-08-24| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/05/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201110393314.9|2011-12-01|
    CN201110393314.9A|CN102435032B|2011-12-01|2011-12-01|Sealed type circulating water cooling device and method|
    PCT/CN2012/076189|WO2013078844A1|2011-12-01|2012-05-29|Closed circulating water cooling apparatus and method|
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