Bleed valve and bleed assembly for fuel cell system

Abstract

The present application provides a relief valve for controlling fluid flow, comprising: a valve body including a valve cavity defining a fluid passage, the valve cavity being cylindrical and having an inner peripheral wall; the valve element assembly is arranged in the valve cavity and comprises a valve seat and a valve element. A plurality of joint parts and a plurality of separation parts which are alternately arranged along the periphery of the valve core are formed on the valve core; each joint part of the valve element can be jointed with the inner peripheral wall of the valve cavity in the radial direction of the valve element and can slide relative to the inner peripheral wall of the valve cavity in the axial direction of the valve element, and each separation part of the valve element is separated relative to the inner peripheral wall of the valve cavity in the radial direction. A passage which extends in the axial direction and penetrates through the valve element is defined between the partition part of the valve element and the inner circumferential wall of the valve cavity. The utility model further provides a release assembly comprising the release valve. According to the release valve, freezing in the release valve can be rapidly eliminated with relatively low energy consumption, so that the release valve can timely discharge fluid out of the fuel cell system, and reliable operation of the fuel cell system is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fuel cell systems, in particular to a drain valve and a drain assembly for a fuel cell system. BACKGROUND

[0002] Fuel cells used in fuel cell electric vehicles are diverse, one of which is a proton exchange membrane fuel cell, which includes components such as a proton exchange membrane, a catalyst layer, a gas diffusion layer, and a bipolar plate, for directly converting the chemical energy of hydrogen and oxygen into electrical energy, and oxidizing hydrogen at the anode to generate protons and electrons through a redox reaction. The protons are transferred to the cathode through the proton exchange membrane, and the electrons flow through the external circuit to form an electric current, and finally combine with oxygen at the cathode to generate water.

[0003] The hydrogen supply device is one of the key components of the proton exchange membrane fuel cell, which is responsible for providing the required hydrogen to the fuel cell. The hydrogen supply system generally includes devices for the preparation, storage, and delivery of hydrogen. Among them, the hydrogen delivery from the storage container to the fuel cell stack is generally carried out through a pipeline, and a certain pressure is maintained in the pipeline to ensure the flow of hydrogen. The hydrogen supply system usually includes devices such as pressure reducing valves, flow meters, and pressure sensors to control the pressure and flow of hydrogen.

[0004] In the hydrogen supply device of the fuel cell system, a drain valve is usually used to control the discharge of water from the fuel cell system. The drain valve discharges water from the anode side of the fuel cell system and blows away nitrogen from the cathode side of the fuel cell system, thereby ensuring a high efficiency of the fuel cell system. In this process, the movable valve core of the drain valve is actuated to open / close the drain valve for discharging water or blowing away gas.

[0005] In the hydrogen supply device of the proton exchange membrane fuel cell, it is easy to retain water. When the drain valve is connected to the discharge port of the water separator, the drain valve discharges the accumulated water from the water separator. The drain valve is usually connected to the fuel cell system via a joint. When the fuel cell system is urgently shut down in a low temperature environment, the movable valve core of the drain valve is prone to icing and freezing, which causes the start-up of the fuel cell system to fail. Therefore, some special technical measures need to be taken in the drain valve of the fuel cell to avoid retaining water as much as possible, prevent icing at the joint in a low temperature environment, and cause the drain valve to be blocked, so that the fluid including water is discharged from the fuel cell.

[0006] Therefore, there is an urgent need in the prior art to improve the structure of the existing drain valve and drain assembly. INNOVATION CONTENT

[0007] To overcome at least one of the drawbacks in the prior art, the present application provides a kind of bleed valve for fuel cell system, to control fluid flow, the bleed valve includes: valve body, it includes the valve cavity of fluid passage being defined, the valve cavity is cylindrical and has inner peripheral wall;Valve core assembly is arranged in the valve cavity and includes valve seat and valve core;The valve core is configured to be actuated to move in the valve cavity along the axial direction of valve core, to engage with the valve seat to block fluid passage, and disengage from the valve seat to connect fluid passage.Therein, multiple engagement portions and multiple spaced portions are alternately arranged along the periphery of the valve core in the circumferential direction of valve core;Each engagement portion of the valve core can be engaged with the inner peripheral wall of the valve cavity in the radial direction of valve core, and can slide relative to the inner peripheral wall of the valve cavity along the axial direction of valve core, and each spaced portion of the valve core is spaced apart from the inner peripheral wall of the valve cavity in the radial direction of valve core, to define a passage through the periphery of the valve core along the axial direction of the valve core between the spaced portion of the valve core and the inner peripheral wall of the valve cavity.

[0008] According to one embodiment of the present application, the outer periphery of the engagement portion is formed with a recess, which communicates with the passage.

[0009] According to one embodiment of the present application, a through groove is formed in the outer periphery of the engagement portion along the axial direction of the engagement portion, and the fluid in the valve cavity can flow out through the through groove.

[0010] According to one embodiment of the present application, the outer periphery of the engagement portion is formed with a recess, which communicates with the through groove of the engagement portion.

[0011] According to one embodiment of the present application, the engagement portion has an upper end portion and a lower end portion; the through groove includes a first groove and a second groove, which are respectively formed in the upper end portion and the lower end portion of the engagement portion; the first groove and the second groove both communicate with the recess.

[0012] According to one embodiment of the present application, the first groove and the second groove are aligned with each other along the axial direction of the valve core.

[0013] According to one embodiment of the present application, the valve core includes a movable core portion and a fixed core portion, and a resilient member is arranged between the movable core portion and the fixed core portion.

[0014] According to one embodiment of the present application, one or more through holes are formed in the end portion of the valve core along the axial direction of the valve core, and one or more inclined holes are formed in the outer side wall of the valve core, which pass through the outer side wall, wherein the one or more through holes communicate with the one or more inclined holes.

[0015] According to one embodiment of the present application, the end portion of the valve core includes a transition surface extending obliquely outward in a radial direction of the valve core from the center thereof toward at least one of the plurality of engagement portions.

[0016] The present application also discloses a bleed assembly for a fuel cell system, which includes a bleed valve as described above. The bleed assembly further includes an electrical connector configured to supply electrical current to the bleed valve such that the valve core and the valve seat of the bleed valve are engaged and disengaged to block and open the fluid passage, and a support sealing member for fastening the electrical connector and the bleed valve together.

[0017] The bleed valve and the bleed assembly according to the present application effectively and timely discharge moisture in the fuel cell system to the outside, avoid icing in the bleed valve, and thus ensure reliable operation of the fuel cell system. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other aspects of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A fuel supply system for a fuel cell system using the bleed valve and the bleed assembly according to the preferred embodiments of the present application is schematically shown.

[0020] Figure 2a is a schematic perspective view of a bleed assembly including the bleed valve.

[0021] Figure 2b is a schematic side view of the bleed assembly;

[0022] Figure 3 is a schematic exploded view of the bleed assembly.

[0023] Figure 4a is a schematic flow direction view of the bleed assembly.

[0024] Figure 4b is a schematic cross-sectional view of the bleed assembly.

[0025] Fig. 4c is a schematic cross-sectional view of the bleed valve.

[0026] Figure 5a is a perspective view of a valve core of the bleed valve of the bleed assembly according to the preferred embodiments of the present application.

[0027] Figure 5b is a side view of the valve core of the bleed valve of the bleed assembly according to the preferred embodiments of the present application.

[0028] Figure 6a is a perspective view of the valve core of the bleed valve as one possible way.

[0029] Figure 6b A three-dimensional sectional view of a relief valve as a feasible approach is shown.

[0030] Figure 6c A three-dimensional sectional view of a relief valve as a feasible approach is shown. Detailed Implementation

[0031] Fuel cell systems, such as proton exchange membrane fuel cells (PEMFCs), are used to provide electricity to electric vehicles, enabling the vehicle's electric motor to provide power, or to enable onboard systems to perform various functions. Figure 1 A fuel supply system for a fuel cell system is schematically shown, which uses a vent valve 100 and a vent assembly 1000.

[0032] Figure 1 A portion of the fuel cell system shown includes a fuel cell stack 1 and a fuel supply system 9 (such as...). Figure 1 (Represented by the dashed box in the image). Figure 1 As shown, the fuel cell stack 1 includes an anode side 3 and a cathode side 5. Fuel gas (e.g., hydrogen) from the fuel source 7 is supplied to the input terminal 13 of the anode side 3 via the fuel gas supply device 11 of the fuel supply system 9. During operation of the fuel cell system, water, unconsumed fuel gas (e.g., hydrogen), and waste gases accumulate at the output terminal 15 of the anode side 3. Waste gases refer to gases that do not participate in the reaction, primarily nitrogen.

[0033] The recirculation loop 17 of the fuel supply system 9 is located between the output 15 of the anode side 3 and the fuel gas supply device 11 to recirculate unconsumed fuel gas back to the fuel gas supply device 11. The fuel gas supply device 11 mixes the unconsumed fuel gas with fuel gas from the fuel source 7 and supplies it again to the input 13 of the anode side 3. The recirculation loop 17 typically includes a water separator 19 connected to the output 15 of the anode side 3 and a fuel circulation pump 21 connected between the water separator 19 and the fuel gas supply device 11. The water separator 19 receives the recirculation stream 23 from the output 15 of the anode side 3, which includes a fluid mixture of product water, unconsumed fuel gas (e.g., hydrogen), and ineffective gas, and removes the product water from the recirculation stream 23. This increases the concentration of fuel gas in the recirculation stream 23, preventing water blockage in the fluid channels of the fuel cell stack 1 or the fuel gas supply device 11, thereby preventing efficiency degradation or malfunction of the fuel cell system.

[0034] The water separator 19 includes a drain passage 25 that drains water from the separation chamber. Water removed by the water separator 19 can be drained through the drain passage 25. A drain valve 27 is connected to the drain passage 25 at a drain port 29 of the drain passage 25 by a joint. The drain valve 27 is used to control the discharge of accumulated water from the water separator 19. Specifically, the drain valve 27 will open when the water in the water separator 19 accumulates to a certain amount, and the accumulated water is discharged from the water separator 19 by the pressure of the gas in the recirculation flow 23 via the drain passage 25.

[0035] When the temperature of the environment in which the fuel cell system is located is too low, ice can form in the joint and block the joint. If the ice in the joint cannot be removed in time, the drain valve 27 cannot be opened in time to discharge fluids such as water. Accordingly, this can reduce the concentration of fuel gas in the fluid that is supplied again to the fuel cell stack 1, thereby reducing the operating efficiency of the fuel cell system, and even causing the fuel cell system to malfunction.

[0036] Figure 2a and Figure 2b A drain assembly 1000 for a fuel cell system is schematically shown. The drain assembly 1000 includes a drain valve 100, a support seal member 200, and an electrical connector 300. Figure 3 is an exploded view of the drain assembly 1000 including the drain valve 100. Figure 4a is a schematic view showing the flow direction of water / water vapor mixture in the drain assembly. Figure 4b is a schematic cross-sectional view of the drain assembly 1000 including the drain valve 100. Fig. 4c is a schematic cross-sectional view of the drain valve 100. The configuration of the drain valve 100 and the drain assembly 1000 according to the present application is specifically designed so that water generated and accumulated in the drain valve 100 can be discharged more quickly. Accordingly, the present application can avoid the formation of ice in the drain valve 100, thereby ensuring that the fuel cell system can be reliably operated.

[0037] The support seal member 200 can be made partially or entirely of an insulating material. Examples of insulating materials suitable for making the support seal member 200 include, but are not limited to, plastic, nylon, liquid crystal polymer (LCP), polyphenylene sulfide (PPS), high-temperature nylon, or polyphenylene oxide (PPO), or polypropylene (PP).

[0038] The electrical connector 300 includes an electrically conductive terminal 301 (shown in Figure 4b ) and an insulating housing 302. The electrically conductive material suitable for making the electrical connector terminal 301 can be a metal, such as copper or a metal alloy. The insulating housing 302 can also be made partially or entirely of an insulating material. As Figure 4bAs shown, conductive terminal 301 is exposed within socket 303 defined by a portion of insulating housing 302 to provide a concave connection. This configuration allows a power cord plug (not shown) to be connected to a power source to be inserted into socket 303 to connect electrical connector 300 to a power source, thereby supplying power to the discharge assembly 1000 having discharge valve 100.

[0039] As shown in the above view, a relief valve 100 for controlling fluid flow includes a valve body 110 and a valve core assembly 120. The valve body 110 can be made of any suitable material, preferably metal. The valve body 110 includes a valve cavity 111 defining a fluid passage, the valve cavity being cylindrical and having an inner peripheral wall 112. The valve core assembly 120 is disposed within the valve cavity 111 and includes a valve seat 121 and a valve core 122. As an optional embodiment, the valve core 122 includes a movable core portion 122a and a fixed core portion 122b.

[0040] Specifically, as shown in 4a, the relief valve 100 includes a fluid inlet 113 and a fluid outlet 114. The fluid inlet 113 is connected to the valve cavity 111 via the valve seat 121, and finally connected to the fluid outlet 114, thus forming a... Figure 4a The diagram illustrates the fluid channels and flow direction.

[0041] like Figure 4b As shown, the valve core 122 (or more specifically, the movable core 122a of the valve core 122) is configured to be actuated to move axially along the valve core 122 to engage with the valve seat 121 to block the fluid passage, and to disengage from the valve seat 121 to open the fluid passage. A seal 129, such as a rubber gasket, is provided at the contact point between the movable core 122a and the valve seat 121. The seal 129 ensures a good seal when the movable core 122a and the valve seat 121 are engaged, effectively blocking the flow of fluid and blocking the fluid passage.

[0042] like Figure 4bA spring 130 is provided between the movable core 122a and the fixed core 122b. An electromagnetic coil 140 is provided around the valve body 110. The electromagnetic coil 140 is a driving component of the relief valve 100, usually made of insulated wire. When current flows through the electromagnetic coil 140 via the electrical connector 300, a magnetic field is generated in the electromagnetic coil 140. This magnetic field generates a corresponding magnetic force according to the direction of the current and the number of turns of the coil. The movable core 122a is a moving component in the relief valve 100. The fixed core 122b can be a stationary component that works with the movable core 122a to form an electromagnetic attractive force. When the electromagnetic coil 140 is energized, an attractive force is generated between the fixed core 122b and the movable core 122a, and the generated magnetic field pushes the movable core 122a to move towards the fixed core 122b. The movable core 122a is disengaged or engaged with the valve seat 121, changing the state of the fluid passage of the valve body 110, realizing the opening or closing of the relief valve 100.

[0043] The spring 130 in the relief valve 100 plays a role in resetting. When the electromagnetic coil 140 is de-energized, the magnetic field disappears, and the movable valve core 122a returns to the initial position under the spring force of the spring 130, abutting against the valve seat 121, thereby closing the relief valve 100. The spring 130 provides the initial force required to close the relief valve 100, thereby overcoming the pressure of the medium in the absence of electromagnetic force or insufficient electromagnetic force, ensuring that the relief valve 100 remains closed.

[0044] The specific working process of the relief valve 100 is as follows. When the electromagnetic coil 140 is energized, the generated magnetic field attracts the movable valve core 122a to approach the fixed core 122b, and the movable valve core 122a moves away from the valve seat 121, allowing fluid to flow. When the electromagnetic coil 140 is de-energized, the magnetic field disappears, and the movable valve core 122a returns to the initial position under the action of the spring 130, closing the fluid passage of the relief valve 100 and preventing the flow of fluid. This way of controlling the movement of the movable valve core 122a by the electromagnetic coil 140 enables the relief valve 100 to quickly respond to changes in electrical signals and achieve precise control over the direction of fluid flow.

[0045] Figure 5a is a perspective view of a valve core of a relief valve of a relief assembly according to a preferred embodiment of the present application, Figure 5b is a side view of a valve core of a relief valve of a relief assembly according to a preferred embodiment of the present application. According to the present application, as Figure 5a and 5bAs shown, the plurality of engaging portions 123 and the plurality of spaced portions 124 are alternately arranged along the periphery of the spool 122 in the circumferential direction of the spool 122. Each engaging portion 123 of the spool 122 is capable of engaging with the inner peripheral wall 112 of the valve chamber 111 in the radial direction of the spool 122 and is capable of sliding with respect to the inner peripheral wall 112 of the valve chamber 111 in the axial direction of the spool 122.

[0046] In Figure 4b As shown, each spaced portion 124 of the spool 122 is spaced apart from the inner peripheral wall 112 of the valve chamber 111 in the radial direction of the spool 122 to define a passage 125 between the spaced portion 124 of the spool 122 and the inner peripheral wall 112 of the valve chamber 111, which extends through the periphery of the spool 122 in the axial direction of the spool 122.

[0047] The passage 125 between the spaced portion 124 of the spool 122 and the inner peripheral wall 112 of the valve chamber 111 enables the moisture in the relief valve 100 to be effectively and timely discharged to the outside of the fuel cell system, thereby avoiding icing in the relief valve 100 and ensuring reliable operation of the fuel cell system.

[0048] A through groove 126 is further formed in the axial direction of the engaging portion 123 of the spool 122, wherein the fluid in the valve chamber 111 can flow through the through groove 126 so that the fluid from the fluid inlet 113 can flow to the fluid outlet 114 through the through groove 126 and finally be discharged to the outside of the relief valve 100.

[0049] Optionally, the outer periphery of the engaging portion 123 of the spool 122 can further be formed with a recessed portion 127. The recessed portion 127 is in communication with the passage 125 or the through groove 126 of the engaging portion 123 to facilitate the discharge of the fluid in the relief valve 100.

[0050] As an optional embodiment, the engaging portion 123 of the spool 122 has an upper end portion and a lower end portion. A first groove 126a and a second groove 126b are respectively formed on the upper end portion and the lower end portion of the engaging portion 123. The recessed portion 127 is formed between the upper end portion and the lower end portion of the engaging portion 123 and is recessed inwardly, while the first groove 126a and the second groove 126b are respectively in communication with the recessed portion 127. As shown, Figure 5a The first groove 126a and the second groove 126b can be aligned with each other in the axial direction of the spool 122.

[0051] As an alternative structure, as shown, Figure 6aAs shown, one or more through holes 122c are provided at the end or top of the valve core 122, extending axially through the entire valve core 122. Fluid from the fluid inlet 113 can pass through the through holes 122c and be discharged downwards through the valve core 122, preventing water accumulation in the relief valve 100.

[0052] like Figure 6b As shown, one or more oblique holes 122d are formed on the outer side wall of the valve core 122, which are connected to one or more through holes 122c of the valve core 122. With this structural arrangement, the fluid on the outside of the valve core 122 can be connected to the through hole 122c through the oblique hole 122d, and then discharged to the outside of the valve core 122 through the through hole 122c.

[0053] like Figure 6c As shown, one or more annular grooves 128 are formed on the outer peripheral surface of the valve core 122. The annular grooves 128 are connected to the inlet and outlet sides of the valve core, or to the fluid passage of the valve body 110, so that the fluid in the relief valve 100 can be discharged through the annular grooves 128 on the outer peripheral surface of the valve core 122.

[0054] like Figure 4a , 4b As shown in 4c, the fixed core 122b of the relief valve 100 may also be provided with a through hole so that the fluid discharged through the movable core 122a flows through the through hole of the fixed core 122b to the fluid outlet 114 of the valve body 110.

[0055] Returning to the implementation methods disclosed in this application, such as Figure 5a and 5b As shown, the end of the valve core 122 includes a transition surface 122a-1 that extends radially outward from its center toward at least one of the plurality of joints 123. Due to the presence of the inclined transition surface 122a-1, fluid flowing from the fluid inlet 113 through the valve seat 121 into the valve chamber 111 does not easily accumulate, but instead flows toward the outer periphery of the valve core 122 and axially toward the fluid outlet 114.

[0056] The fluid discharged from the relief valve 100 can be one of water, air, hydrogen, nitrogen, or a mixture thereof.

[0057] like Figure 2a , 2b and 3 and Figure 5a , 5bAs shown, the present application also discloses a bleed assembly 1000 for a fuel cell system, which includes the bleed valve 100 described above. The bleed assembly 1000 further includes an electrical connector 300 configured to supply electrical current to the spool assembly 120 of the bleed valve 100 such that the spool 122 and the valve seat 121 of the spool assembly 120 engage and disengage to block and open the fluid passage. The bleed assembly 1000 further includes a support seal member 200 for fastening the electrical connector 300 and the bleed valve 100 together.

[0058] As the term "water" is used herein, water can be in a mixed phase and includes liquid phase water and gaseous phase water, and the water separator removes at least a portion of the liquid phase water from the stream including water and fuel gas. Further, the term "water separation chamber" can refer to any suitable type of water separation chamber that separates water from a gas stream including unspent fuel gas and off-gas as the recirculation stream passes therethrough to remove water from the recirculation stream, such as a centrifugal water separation chamber, a water separation chamber with a screen, etc.

[0059] The utility model is described in detail above in combination with specific embodiments. Obviously, the above description and the embodiments shown in the drawings should be understood as exemplary and do not constitute a limitation on the utility model. For those skilled in the art, various modifications or changes can be made to the utility model without departing from the spirit of the utility model, and these modifications or changes do not deviate from the scope of the utility model.

Claims

1. A relief valve (100) for a fuel cell system for controlling flow of a fluid, the relief valve (100) comprising: a valve body (110) including a valve chamber (111) defining a fluid passage, the valve chamber (111) being cylindrical and having an inner peripheral wall (112); a spool assembly (120) disposed in the valve chamber (111) and including a valve seat (121) and a spool (122), the spool (122) being configured to be actuated to move in an axial direction of the spool (122) within the valve chamber (111) to engage with the valve seat (121) to block the fluid passage and disengage from the valve seat (121) to open the fluid passage; characterized in that a plurality of engagement portions (123) and a plurality of spaced portions (124) are alternately arranged in a circumferential direction of the spool (122) along a periphery of the spool (122); each engagement portion (123) of the spool (122) is engageable with the inner peripheral wall (112) of the valve chamber (111) in a radial direction of the spool (122) and slidable relative to the inner peripheral wall (112) of the valve chamber (111) in the axial direction of the spool (122), and each spaced portion (124) of the spool (122) is spaced apart from the inner peripheral wall (112) of the valve chamber (111) in the radial direction of the spool (122) to define a passage (125) through the periphery of the spool (122) in the axial direction of the spool (122) between the spaced portion (124) of the spool (122) and the inner peripheral wall (112) of the valve chamber (111).

2. A relief valve (100) for a fuel cell system according to claim 1, characterized in that: an outer periphery of the engagement portion (123) is formed with a recess (127) communicating with the passage (125).

3. The relief valve (100) for a fuel cell system as set forth in claim 1, characterized by: a through groove (126a, 126b) is formed in the outer periphery of the engagement portion (123) in the axial direction of the engagement portion (123), through which the fluid in the valve chamber (111) can flow out.

4. The relief valve (100) for a fuel cell system as set forth in claim 3, characterized by: the outer periphery of the engagement portion (123) is formed with a recess (127) communicating with the through groove (126a, 126b) of the engagement portion (123).

5. A relief valve (100) for a fuel cell system according to claim 3 or 4, characterized in that: the engagement portion (123) has an upper end portion and a lower end portion; the through groove (126a, 126b) includes a first groove (126a) and a second groove (126b) formed in the upper end portion and the lower end portion of the engagement portion (123), respectively; the first groove (126a) and the second groove (126b) both communicate with the recess (127).

6. A relief valve (100) for a fuel cell system according to claim 5, characterized in that: the first groove (126a) and the second groove (126b) are aligned with each other in the axial direction of the spool (122).

7. The relief valve (100) for a fuel cell system as set forth in claim 1, characterized by: the spool (122) includes a movable core portion (122a) and a fixed core portion (122b), and an elastic member (130) is provided between the movable core portion (122a) and the fixed core portion (122b).

8. The relief valve (100) for a fuel cell system as set forth in claim 1, characterized by: The end of the valve core (122) is provided with one or more through holes (122c) penetrating the valve core (122) along the axial direction of the valve core (122), and one or more inclined holes (122d) penetrating the outer side wall of the valve core (122) are formed on the outer side wall of the valve core (122), wherein the one or more through holes (122c) and the one or more inclined holes (122d) are in communication.

9. The relief valve (100) for a fuel cell system as set forth in claim 1, characterized by: The end of the valve core (122) comprises a transition surface (122a-1) extending outwardly in the radial direction of the valve core (122) from the center thereof towards at least one of the plurality of joint portions (123).

10. A bleed assembly (1000) for a fuel cell system comprising a bleed valve (100) according to any one of claims 1-9, characterized in that, Further comprising: an electrical connector (300) configured to supply electrical current to the bleed valve (100) such that the valve core (122) and the valve seat (121) of the bleed valve (100) engage and disengage to block and open the fluid passage; and a support sealing member (200) for fastening the electrical connector (300) and the bleed valve (100) together.

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