Valve device and enclosure including such valve device

专利摘要:
A valve device (9) for an enclosure (1), in which a fluid under pressure is intended to be contained, comprising a valve body (8) for sealing against a valve body seat (10), which is formed around a valve opening (11). The valve body seat (10) is a portion of an annular groove (7) which is received on an inside of the enclosure, and the valve body (8) is an annular elastic member which is complementary to the annular groove (7) and which is prestressed sealing abutment against the valve body seat in the groove, so that, in a first position, the valve body (8) lies in the groove (7) and seals against the valve body seat (10), and so that, in other positions, the valve body (8) is moved from the valve body seat (10 ) whereby fluid transport through the valve opening (II) is allowed. Fig. 1 76131; 2009-10-16
公开号:SE0901337A1
申请号:SE0901337
申请日:2009-10-16
公开日:2011-04-17
发明作者:Jan Erik Torsten Mikael Rova
申请人:Asa Suspension Ab；
IPC主号:

专利说明:

These objects are achieved according to the invention in that the valve seat is a portion of an annular groove, which is received on an inside of the enclosure, and that the valve body is an annular, elastic element, which is complementary to the annular groove, and which is biased for sealing abutment against the valve body seat in the groove, so that, in a first position, the valve body lies in the groove and seals against the valve body seat, and so that, in other positions, the valve body is moved from the valve body seat thereby allowing fluid transport through the valve opening.
In this way a secure valve device is achieved, in which a secure sealing of the annular elastic element is achieved at an overpressure acting on the inside of the enclosure. In addition, it is achieved that the valve body is easily moved from the valve body seat to allow fluid transport through the valve opening either if a relatively higher pressure is applied from the outside of the enclosure through the valve opening, so that the valve body is lifted from the valve body seat, or the valve body is mechanically actuated to move from the valve body seat so that fluid transport out of the enclosure can take place.
It is preferred that the valve body has a circular annular shape and that the groove extends circularly, which provides secure abutment of the valve body in its groove.
Because the valve body and the groove have at least a partially circular section, manufacture is simplified and a simple and economical solution is obtained.
Because the valve opening is defined by a hole with a smaller dimension than the groove and the valve body have in a direction across the groove, the tightness of the valve device is supplied in a simple manner.
By connecting the valve opening to a fluid channel in the wall of the enclosure, a simple and reliable con- 76131; 2009-10-16 10 15 20 25 30 construction, wherein the fluid channel suitably comprises a thread for a fluid line connection.
Suitably, the valve device comprises an actuator which can be inserted from an outside of the enclosure into the fluid channel for moving the valve body to one of said second positions for evacuating the enclosure, which allows easy emptying.
An enclosure according to the invention is preferably applicable to: a pressure vessel, a gas spring, a shock absorber, a pipeline.
BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to an embodiment and with reference to the accompanying drawings, in which: Fig. 1 in section shows an enclosure including a valve device according to the invention in an axial section, Fig. 2 shows a detail of fig. On a larger scale, the valve device is shown in more detail, Fig. 3 shows the valve device provided with an actuator, and Fig. 4 shows the valve device with a fluid supply connection.
DESCRIPTION OF EMBODIMENT Fig. 1 illustrates an enclosure in the form of a pressure vessel 1 circular in section in the form of a gas accumulator.
The enclosure 1 has a circular-cylindrical vessel wall 2 and a fixed end 3 integrated therewith. A releasable end wall 4 is sealed via a sealing device 5 against the vessel wall 2 and is fixed thereto by a threaded connection 6.
A circumferential circular groove 7 received on the inside of the vessel wall 2 is arranged to receive a valve body 8, 76131; 2009-10-16 10 15 20 25 30 which is annular, circular, and which has a circular section. The valve body 8 is an elastic element of the O-ring type made of an elastic material such as a rubber material or for example an elastomeric material depending on, among other things, the area of use and on which medium is intended to be contained in the enclosure 1. The valve body is made with such dimensions - ions that it is slightly biased against the wall of the groove to ensure, among other things, that it safely remains in the groove even with an unpressurized inside.
In the example shown, the pressure inside the enclosure is P1, which is greater than the outside pressure P0, which here refers to the atmospheric pressure.
Fig. 2 shows the valve device 9 in Fig. 1 in more detail, denoting by 10 a valve body seat, which simply consists of a portion of the groove 7, which surrounds a valve opening 11. The valve opening 11 has a dimension in a transverse joint seen for the groove 7 and the valve body 8, which is less than the transverse dimension of the groove 7 so that it can now function as a valve body seat 10 in the intended manner. Normally, the valve opening 11 is circular in section, which it is also in the embodiment shown.
The valve opening 11 cooperates with a fluid channel 12, which in Fig. 2 is plugged with a plug in the form of a screw 13, having an Allen socket to allow screwing. The fluid channel 12 internally has a thread 19 for co-operation with, inter alia, the said plug 13.
The fluid channel 12 and this thread suitably have a larger dimension transversely than the valve opening 11, so that the plug 13 in the plugging position is pulled down towards a stop stop at the bottom of the fluid channel 12.
The plug 13 suitably has a tip area which is flat and designed in such a way that its outer end when screwed in is screwed slightly inside a mouth of the valve opening 76131; 2009-10-16 10 15 20 25 30 at the valve body seat 10, so that a slight deformation of the valve body 8 is allowed, however, that the end of the plug 13 prevents the material in the valve body 8 from penetrating too far into the valve opening 11. The main purpose of the plug 13 is to prevent unwanted foreign objects from entering the area of the valve opening from the outside of the enclosure.
Fig. 3 shows the area of the valve device 9 in a different situation, namely when an actuator 20 is screwed into the thread 19 in the fluid channel 12. The actuator 20 has a knob 17 for manual actuation and a actuating end 18, which in the example shown has a pin-shaped cylinder mold with a flat end surface, which upon rotation of the actuator 20 presses the valve body 8 from the valve body seat 10, whereby the tightness interaction between the valve body 8 and the valve body seat 10 ceases. Arrows 14 indicate outflowing medium from the interior of the enclosure to the outside thereof.
The actuator 20 suitably has a fluid passage 16 in the form of a groove past the thread for leaking fluid, which is indicated by the arrow 15.
Fig. 4 illustrates a fluid supply connection 21, which is attachable by screwing into the fluid channel 12 by threading with a thread 22, which engages with the corresponding thread 19 in the wall of the fluid channel 12. At an overpressure on the inside of the fluid supply connection 21 with the pressure P2, exceeding the pressure inside the enclosure P1, the inflowing gas will lift the valve body 8 from the valve body seat 10 and flow into the enclosure, as illustrated by arrows 25.
Denoted by 23 is a seal for ensuring a tight application of the fluid supply connection 21 to the pressure vessel wall. 24 indicates a thread for connection of a pressure fluid hose, a pump or the like. 76131; The invention can be varied within the scope of the following claims and is also applicable to devices other than gas accumulators, as stated above. The plug 13 in Fig. 2, the actuator 20 in Fig. 3 and the fluid supply connection 21 in Fig. 4 can be designed differently and as an example the enclosure can have a permanent connection to, for example, a pump or the like. It is also possible to integrate the function which the actuator 20 fulfills with a fluid supply connection so that both of these functions can be achieved by a single device. The shape of the valve body 8 can be varied so that, for example, the cross section of the valve body deviates from the circular cross-section. 76131; 2009-10-16

权利要求:
Claims (9)
[1]
Valve device (9) for an enclosure (1), in which a fluid under pressure is intended to be contained, comprising a valve body (8) for sealing against a valve body seat (10), which is formed around a valve opening (11) , characterized in - that the valve body seat (10) is a portion of an annular groove (7), which is received on an inside of the enclosure, and - that the valve body (8) is an annular, elastic element, which is complementary to the annular groove (7), and which is biased for sealing abutment against the valve body seat in the groove, - so that, in a first position, the valve body (8) lies in the groove (7) and seals against the valve body seat (10), and - so that, in other positions, the valve body (8) is moved from the valve body seat (10), thereby allowing fluid transport through the valve opening (11).
[2]
Valve device according to Claim 1, characterized in that the valve body (8) has a circular annular shape and in that the groove (7) extends circularly.
[3]
Valve device according to Claim 1 or 3, characterized in that the valve body (8) and the groove (7) have at least a partially circular section.
[4]
Valve device according to one of Claims 1 to 3, characterized in that the valve opening (11) is defined by a hole with a smaller dimension than the groove (7) and the valve body (8) in a direction transverse to the groove. 76131; 2009-10-16 10 15 20
[5]
Valve device according to one of Claims 1 to 4, characterized in that the valve opening (11) connects to a fluid channel (12) in a wall (2) of the enclosure.
[6]
Valve device according to Claim 5, characterized in that the fluid channel (12) comprises a thread for a fluid line connection.
[7]
Valve device according to claim 5 or 6, characterized in that it comprises an actuator (20) insertable from the outside of the enclosure into the fluid channel for moving the valve body (8) to one of said second positions for evacuating the enclosure.
[8]
Enclosure for receiving a fluid under pressure, characterized in that it includes a valve device according to any one of claims 1 - 7.
[9]
Enclosure according to claim 8, characterized in that it is one of the group: a pressure vessel, a gas spring, a shock absorber, a pipeline. 76131; 2009-10-16

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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SE0901337A|SE534216C2|2009-10-16|2009-10-16|Valve device and enclosure including such valve device|SE0901337A| SE534216C2|2009-10-16|2009-10-16|Valve device and enclosure including such valve device|