CN117823663A - Ball valve with two-way pressure release function - Google Patents
Ball valve with two-way pressure release function Download PDFInfo
- Publication number
- CN117823663A CN117823663A CN202410252048.5A CN202410252048A CN117823663A CN 117823663 A CN117823663 A CN 117823663A CN 202410252048 A CN202410252048 A CN 202410252048A CN 117823663 A CN117823663 A CN 117823663A
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- valve
- valve body
- pressure release
- inlet
- outlet
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000446 fuel Substances 0.000 abstract description 23
- 239000002828 fuel tank Substances 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Safety Valves (AREA)
- Check Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention belongs to the technical field of system electrical control, and particularly relates to a ball valve with a bidirectional pressure release function. The ball valve comprises an inlet pressure release check valve and an outlet pressure release check valve which are arranged on a valve body. When the ball valve is in a closed position, if the pressure at the inlet of the ball valve is overlarge, high-pressure fuel is released into the fuel tank through the inlet pressure release check valve door; and if the pressure at the outlet of the ball valve is overlarge, the high-pressure fuel is released into the fuel tank through the valve of the outlet pressure release check valve. When the ball valve is in the closed position, the high-pressure fuel in the pipelines at the two ends of the inlet and the outlet is released into the fuel tank. The variety and number of devices in the system can be reduced, and the complexity of the system architecture can be reduced.
Description
Technical Field
The invention belongs to the technical field of aircraft fuel systems, and particularly relates to a ball valve with a bidirectional pressure release function.
Background
At present, a ball valve in an aircraft fuel system is used as a component for realizing the on-off function of pipeline fuel, and the function is relatively single. In aircraft fuel system lines, it is often necessary to provide a heat relief device due to temperature variations to prevent excessive line pressure from developing in the enclosed fuel line space when the line valve is closed. In the system architecture, pipelines at the two ends of the inlet and the outlet of some ball valves have the pressure release requirement.
Providing a plurality of heat and pressure relief devices on the pipeline may increase the types and numbers of the system devices and further complicate the system architecture.
Disclosure of Invention
The purpose of the invention is that: the ball valve with the bidirectional pressure release function has the function of releasing high-pressure fuel in pipelines at the two ends of the inlet and the outlet into a fuel tank when the ball valve is in a closed position.
The technical scheme of the invention is as follows: in order to achieve the above object, a ball valve with a bidirectional pressure release function is provided, comprising: valve rod 2, valve body 5, valve seat 6, wave spring 7, ball valve core 11, inlet pipe joint 13, inlet pressure release check valve shutter 14, outlet pressure release check valve shutter 15, outlet pipe joint 8; the valve body 5 is provided with a straight inner cavity; the ball-type valve core 11 is arranged in the inner cavity of the valve body 5, the valve rod 2 is inserted into the inner cavity of the valve body 5 and connected with the ball-type valve core 11, and the valve seat 6 is arranged in the inner cavity of the outlet side of the valve body 5; the inlet pipe joint 13 is fixed to an inlet side end of the valve body 5, and the outlet pipe joint 8 is fixed to an outlet side end of the valve body 5; the wave spring 7 is pressed between the outlet pipe joint 8 and the valve seat 6; the valve rod 2 is rotated to drive the spherical valve core 11 to control the on-off of the inlet side and the outlet side of the valve body 5; the inlet pressure release check valve door 14 is fixed on the end face of the inlet side of the valve body 5, an inlet pressure release channel is formed in the valve body 5, and the inlet pressure release channel is in one-way communication with the inlet side of the valve body 5 and the inlet pressure release check valve door 14; the outlet pressure release check valve 15 is fixed on the end face of the inlet side of the valve body 5, the valve seat 6 and the valve body 5 are provided with an outlet pressure release channel which is communicated with each other, and the outlet pressure release channel is in one-way communication with the outlet side of the valve body 5 and the outlet pressure release check valve 15.
In one possible embodiment, the inlet pressure relief passage includes an angled section open to the valve body 5 that communicates with the inlet side of the valve body 5, and a horizontal section that communicates with the angled section.
Preferably, the included angle between the central line of the inclined section of the inlet pressure release channel and the horizontal axis of the straight inner cavity of the valve body 5 is 40-60 degrees.
In one possible embodiment, the inlet pressure relief check valve flap 14 is horizontally inserted into the open end of the horizontal section of the inlet pressure relief passage and is held in compression by the inlet nipple 13.
In one possible embodiment, the outlet pressure relief channel includes a radial hole formed in the valve seat 6, an annular groove in communication with the radial hole, and an inclined hole formed in the valve body 5 in communication with the annular groove, and a horizontal hole in communication with the inclined hole.
Preferably, the angle between the central line of the inclined hole in the outlet pressure release passage and the horizontal axis of the straight inner cavity of the valve body 5 is in the range of 40 ° -60 °.
In one possible embodiment, the outlet pressure relief check valve shutter 15 is horizontally inserted into the open end of the horizontal hole and is pressed and fixed by the inlet pipe joint 13.
In one possible embodiment, the sealing ring 10 is further included; the outer side surface of the valve seat 6 is in sealing fit with the inner cavity wall surface of the valve body 5, an annular groove is formed in the outer side surface of the valve seat 6, and a sealing ring 10 is arranged in the annular groove; one side end surface of the valve seat 6 is contacted with the spherical surface of the spherical valve core 11, and the other side end surface is contacted with the wave spring 7; the annular groove is positioned between the annular groove and the end face of one side of the valve seat 6, which is contacted with the spherical valve core 11. The risk of preventing the high-pressure oil on the outlet side from flowing back is achieved through the sealing ring arranged in the annular groove.
In one possible embodiment, the device further comprises an upper cover 1 and a positioning screw 12; the upper cover 1 is arranged at the top end of the valve body 5, and the upper cover 1 is connected with the valve body 5 through a screw; the lower end part of the valve rod 2 is inserted into a stepped hole at the top of the spherical valve core 11 to be in clearance fit connection with the stepped hole, and the top end of the valve rod passes through a valve rod hole on the valve body 5 and is inserted into a coaxial unthreaded hole of the upper cover 1; the positioning screw 12 is inserted from the bottom of the valve body 5, the top end part of the positioning screw is inserted into a hole below the spherical valve core 11 to be in clearance fit connection with the hole, and the positioning screw 12 is in threaded connection with the valve body 5; the inlet pipe joint 13 is connected with the inlet side end surface of the valve body 5 by a screw, and the outlet pipe joint 8 is connected with the outlet side end surface of the valve body 5 by a screw.
In one possible embodiment, the device further comprises a first gasket 3 and a second gasket 4; the upper end of the valve rod 2 is provided with a boss, the open end of a valve rod hole of the valve body 5 is provided with a step flaring, and a second gasket 4 is arranged between the lower surface of the boss of the valve rod 2 and the valve body 5; a first gasket 3 is arranged between the upper surface of the boss of the valve rod 2 and the upper cover 1. The upper and lower positions of the valve rod are limited by arranging the boss, and the tightness is further improved by arranging the gasket.
In one possible embodiment, the end of the inlet pipe joint 13 connected with the valve body 5 is provided with an outward flange, and the inlet pressure release check valve door 14 and the outlet pressure release check valve door 15 are fixed by pressing the outward flange, and the inlet pressure release passage and the outlet pressure release passage are not blocked.
In one possible embodiment, the device further comprises an adjusting pad 9; the adjusting gasket 9 is pressed between the wave spring 7 and the outlet pipe joint 8.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a ball valve with a bidirectional pressure release function, which can release high-pressure fuel in pipelines at two ends of an inlet and an outlet of the ball valve to a fuel tank when in a closed position. The heat pressure release equipment is integrated on the ball valve, so that the variety and the number of equipment in the system can be effectively reduced, and the complexity of the system architecture is reduced.
1. An inlet pressure release check valve and an outlet pressure release check valve are arranged on the valve body. When the ball valve is in a closed position, if the pressure at the inlet of the ball valve is overlarge, high-pressure fuel is released into the fuel tank through the inlet pressure release check valve door; and if the pressure at the outlet of the ball valve is overlarge, the high-pressure fuel is released into the fuel tank through the valve of the outlet pressure release check valve.
2. The outside diameter of the inlet pipe joint is designed to fix the inlet pressure relief check valve shutter and the outlet pressure relief check valve shutter without blocking the pressure relief passage. The design of the inlet pipe joint is beneficial to the adjustment of the opening pressure of the inlet pressure release check valve and the outlet pressure release check valve without disassembly, and is also beneficial to the installation of the tooling without disassembly.
3. The valve seat is provided with two holes along the radial direction, and the diameter of each hole is expanded at the outer diameter of the valve seat to be in a step shape. The valve seat can ensure the internal seal of the ball valve when in the closed position, can provide a pressure release channel for high-pressure fuel at the outlet, and avoids an additional pressure release device in the space where the outlet of the ball valve is tensed. The holes are reamed at the outer diameter, so that the contact area between the holes on the valve seat and the valve body is increased, and the valve seat is prevented from moving under the action of fluid force and spring force and cannot be opposite to the holes on the valve body.
4. A first gasket is arranged between the surfaces of the valve rod, which are in contact with the upper cover, and a second gasket is arranged between the surfaces of the valve rod, which are in contact with the valve body. The first gasket and the second gasket can reduce friction torque between the valve rod and the valve body as well as between the valve rod and the upper cover, and the service life of the valve is prolonged.
Drawings
FIG. 1 is a front elevational view of the general structure of a preferred embodiment of the present invention;
FIG. 2 is a side view of the general structure of a preferred embodiment of the present invention;
FIG. 3 is a schematic illustration of an inlet pressure relief passageway of a preferred embodiment of the present invention;
FIG. 4 is a schematic diagram of an outlet pressure relief channel according to a preferred embodiment of the present invention.
The valve comprises an upper cover 1, a valve rod 2, a first gasket 3, a second gasket 4, a valve body 5, a valve seat 6, a wave spring 7, an outlet pipe joint 8, an adjusting gasket 9, a sealing ring 10, a spherical valve core 11, a positioning screw 12, an inlet pipe joint 13, an inlet pressure release check valve door 14 and an outlet pressure release check valve door 15.
Detailed Description
For a further understanding of the present invention, preferred embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are merely intended to illustrate further the features and advantages of the invention and are not limiting of the patent claims of the invention.
As shown in fig. 1 and 2, a ball valve with a bidirectional pressure release function, includes: valve rod 2, valve body 5, valve seat 6, wave spring 7, ball valve core 11, inlet pipe joint 13, inlet pressure release check valve shutter 14, outlet pressure release check valve shutter 15, outlet pipe joint 8; the valve body 5 is provided with a straight inner cavity; the ball-type valve core 11 is arranged in the inner cavity of the valve body 5, the valve rod 2 is inserted into the inner cavity of the valve body 5 and connected with the ball-type valve core 11, and the valve seat 6 is arranged in the inner cavity of the outlet side of the valve body 5; the inlet pipe joint 13 is fixed to an inlet side end of the valve body 5, and the outlet pipe joint 8 is fixed to an outlet side end of the valve body 5; the wave spring 7 is pressed between the outlet pipe joint 8 and the valve seat 6; the valve rod 2 is rotated to drive the spherical valve core 11 to control the on-off of the inlet side and the outlet side of the valve body 5; the inlet pressure release check valve door 14 is fixed on the end face of the inlet side of the valve body 5, an inlet pressure release channel is formed in the valve body 5, and the inlet pressure release channel is in one-way communication with the inlet side of the valve body 5 and the inlet pressure release check valve door 14; the outlet pressure release check valve 15 is fixed on the end face of the inlet side of the valve body 5, the valve seat 6 and the valve body 5 are provided with an outlet pressure release channel which is communicated with each other, and the outlet pressure release channel is in one-way communication with the outlet side of the valve body 5 and the outlet pressure release check valve 15.
In one possible embodiment, the inlet pressure relief passage includes an angled section open to the valve body 5 that communicates with the inlet side of the valve body 5, and a horizontal section that communicates with the angled section.
Preferably, the included angle between the central line of the inclined section of the inlet pressure release channel and the horizontal axis of the straight inner cavity of the valve body 5 is 40-60 degrees.
In one possible embodiment, the inlet pressure relief check valve flap 14 is horizontally inserted into the open end of the horizontal section of the inlet pressure relief passage and is held in compression by the inlet nipple 13.
In one possible embodiment, the outlet pressure relief channel includes a radial hole formed in the valve seat 6, an annular groove in communication with the radial hole, and an inclined hole formed in the valve body 5 in communication with the annular groove, and a horizontal hole in communication with the inclined hole.
Preferably, the angle between the central line of the inclined hole in the outlet pressure release passage and the horizontal axis of the straight inner cavity of the valve body 5 is in the range of 40 ° -60 °.
In one possible embodiment, the outlet pressure relief check valve shutter 15 is horizontally inserted into the open end of the horizontal hole and is pressed and fixed by the inlet pipe joint 13.
In one possible embodiment, the sealing ring 10 is further included; the outer side surface of the valve seat 6 is in sealing fit with the inner cavity wall surface of the valve body 5, an annular groove is formed in the outer side surface of the valve seat 6, and a sealing ring 10 is arranged in the annular groove; one side end surface of the valve seat 6 is contacted with the spherical surface of the spherical valve core 11, and the other side end surface is contacted with the wave spring 7; the annular groove is positioned between the annular groove and the end face of one side of the valve seat 6, which is contacted with the spherical valve core 11.
In one possible embodiment, the device further comprises an upper cover 1 and a positioning screw 12; wherein,
the upper cover 1 is arranged at the top end of the valve body 5, and the upper cover 1 is connected with the valve body 5 through a screw; the lower end part of the valve rod 2 is inserted into a stepped hole at the top of the spherical valve core 11 to be in clearance fit connection with the stepped hole, and the top end of the valve rod passes through a valve rod hole on the valve body 5 and is inserted into a coaxial unthreaded hole of the upper cover 1; the positioning screw 12 is inserted from the bottom of the valve body 5, the top end part of the positioning screw is inserted into a hole below the spherical valve core 11 to be in clearance fit connection with the hole, and the positioning screw 12 is in threaded connection with the valve body 5; the inlet pipe joint 13 is connected with the inlet side end surface of the valve body 5 by a screw, and the outlet pipe joint 8 is connected with the outlet side end surface of the valve body 5 by a screw.
In one possible embodiment, the device further comprises a first gasket 3 and a second gasket 4; the upper end of the valve rod 2 is provided with a boss, the open end of a valve rod hole of the valve body 5 is provided with a step flaring, and a second gasket 4 is arranged between the lower surface of the boss of the valve rod 2 and the valve body 5; a first gasket 3 is arranged between the upper surface of the boss of the valve rod 2 and the upper cover 1.
In one possible embodiment, the end of the inlet pipe joint 13 connected with the valve body 5 is provided with an outward flange, and the inlet pressure release check valve door 14 and the outlet pressure release check valve door 15 are fixed by pressing the outward flange, and the inlet pressure release passage and the outlet pressure release passage are not blocked.
In one possible embodiment, the device further comprises an adjusting pad 9; the adjusting gasket 9 is pressed between the wave spring 7 and the outlet pipe joint 8.
Working principle:
in the invention, two sides of an inlet and an outlet of a ball valve with a bidirectional pressure release function are respectively connected with a fuel system pipeline of an airplane. The actuator is connected with the top end of the valve rod 2, when the ball valve needs to be opened, the actuator controls the valve rod 2 to rotate to the open position, and the horizontal through holes on the spherical valve core 11 are opposite to the holes of the inlet pipe joint 13 and the outlet pipe joint 8, so that a fuel oil passage is formed.
When the ball valve needs to be closed, the actuator control valve rod 2 rotates 90 degrees from the open position to the closed position, and the valve seat 6 is pressed on the ball valve core 11 under the action of the wave spring 7 and the adjusting gasket 9. The contact stress between the ball-type valve core 11 and the valve seat 6 ensures that the ball valve does not leak internally in the closed position.
When the ball valve is in the closed position, as shown in fig. 3, if high-pressure fuel exists in the fuel pipeline at the inlet end, the high-pressure fuel at the inlet end enters the inlet pressure release passage, the valve 14 of the inlet pressure release check valve is opened under the action of pressure difference, and the fuel is released into the fuel tank through the valve 14 of the inlet pressure release check valve.
If high-pressure fuel exists in the fuel pipeline at the outlet end, as shown in fig. 4, the high-pressure fuel at the outlet end enters the outlet pressure release channel, the outlet pressure release check valve door 15 is opened under the action of pressure difference, and the fuel is released into the fuel tank through the outlet pressure release check valve door 15.
The invention provides a ball valve with a bidirectional pressure release function, which can release high-pressure fuel in pipelines at two ends of an inlet and an outlet of the ball valve to a fuel tank when in a closed position. The heat pressure release equipment is integrated on the ball valve, so that the variety and the number of equipment in the system can be effectively reduced, and the complexity of the system architecture is reduced.
Claims (10)
1. A ball valve with bi-directional pressure relief, comprising: the valve comprises a valve rod (2), a valve body (5), a valve seat (6), a wave spring (7), a spherical valve core (11), an inlet pipe joint (13), an inlet pressure release check valve (14), an outlet pressure release check valve (15) and an outlet pipe joint (8); the valve body (5) is provided with a straight inner cavity; the ball valve core (11) is arranged in the inner cavity of the valve body (5), the valve rod (2) is inserted into the inner cavity of the valve body (5) and connected with the ball valve core (11), and the valve seat (6) is arranged in the inner cavity of the outlet side of the valve body (5); the inlet pipe joint (13) is fixed at one end of the inlet side of the valve body (5), and the outlet pipe joint (8) is fixed at one end of the outlet side of the valve body (5); the wave spring (7) is pressed between the outlet pipe joint (8) and the valve seat (6); the ball valve core (11) is driven by the rotary valve rod (2) to control the on-off of the inlet side and the outlet side of the valve body (5); the inlet pressure release check valve (14) is fixed on the end face of the inlet side of the valve body (5), an inlet pressure release channel is formed in the valve body (5), and the inlet pressure release channel is communicated with the inlet side of the valve body (5) and the inlet pressure release check valve (14); the outlet pressure release check valve (15) is fixed on the end face of the inlet side of the valve body (5), the valve seat (6) and the valve body (5) are provided with an outlet pressure release channel which is communicated with each other, and the outlet pressure release channel is communicated with the outlet side of the valve body (5) and the outlet pressure release check valve (15).
2. The ball valve with the bidirectional pressure relief function according to claim 1, wherein the inlet pressure relief channel comprises an inclined section which is arranged on the valve body (5) and is communicated with the inlet side of the valve body (5), and a horizontal section which is communicated with the inclined section.
3. A ball valve with a bidirectional pressure release function according to claim 2, characterized in that the inlet pressure release check valve door (14) is horizontally embedded in the horizontal section opening end of the inlet pressure release channel, and is pressed and fixed by the inlet pipe joint (13).
4. The ball valve with the bidirectional pressure relief function according to claim 1, wherein the outlet pressure relief channel comprises a radial hole formed in the valve seat (6), an annular groove communicated with the radial hole, and an inclined hole formed in the valve body (5) and communicated with the annular groove and a horizontal hole communicated with the inclined hole.
5. The ball valve with the bidirectional pressure relief function according to claim 4, wherein the outlet pressure relief check valve door (15) is horizontally embedded in the opening end of the horizontal hole and is pressed and fixed through the inlet pipe joint (13).
6. A ball valve with bi-directional pressure relief according to any of claims 4 or 5, further comprising a sealing ring (10); the outer side surface of the valve seat (6) is in sealing fit with the inner cavity wall surface of the valve body (5), an annular groove is formed in the outer side surface of the valve seat (6), and a sealing ring (10) is arranged in the annular groove; one side end surface of the valve seat (6) is contacted with the spherical surface of the spherical valve core (11), and the other side end surface is contacted with the wave spring (7); the annular groove is positioned between the annular groove and the end face of one side of the valve seat (6) contacted with the spherical valve core (11).
7. The ball valve with the bidirectional pressure release function according to claim 1, further comprising an upper cover (1) and a positioning screw (12); wherein,
the upper cover (1) is arranged at the top end of the valve body (5), and the upper cover (1) is connected with the valve body (5) through a screw; the lower end part of the valve rod (2) is inserted into a stepped hole at the top of the spherical valve core (11) to be in clearance fit connection with the stepped hole, and the top end of the valve rod (2) penetrates through a valve rod hole on the valve body (5) and is inserted into a coaxial light hole of the upper cover (1); the positioning screw (12) is inserted from the bottom of the valve body (5), the top end part of the positioning screw is inserted into a hole below the spherical valve core (11) to be in clearance fit connection with the hole, and the positioning screw (12) is connected with the valve body (5) through threads; the inlet pipe joint (13) is connected with the inlet side end face of the valve body (5) through a screw, and the outlet pipe joint (8) is connected with the outlet side end face of the valve body (5) through a screw.
8. The ball valve with the bidirectional pressure release function according to claim 7, further comprising a first gasket (3) and a second gasket (4); the upper end of the valve rod (2) is provided with a boss, the opening end of a valve rod hole of the valve body (5) is provided with a step flaring, and a second gasket (4) is arranged between the lower surface of the boss of the valve rod (2) and the valve body (5); a first gasket (3) is arranged between the upper surface of the boss of the valve rod (2) and the upper cover (1).
9. A ball valve with a bidirectional pressure release function according to claim 1, characterized in that the end of the inlet pipe joint (13) connected with the valve body (5) is provided with an outward flange, the inlet pressure release check valve shutter (14) and the outlet pressure release check valve shutter (15) are pressed and fixed through the outward flange, and the inlet pressure release passage and the outlet pressure release passage are not blocked.
10. A ball valve with bi-directional pressure relief according to claim 1, characterized by further comprising an adjustment gasket (9); the adjusting gasket (9) is pressed between the wave spring (7) and the outlet pipe joint (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410252048.5A CN117823663A (en) | 2024-03-06 | 2024-03-06 | Ball valve with two-way pressure release function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410252048.5A CN117823663A (en) | 2024-03-06 | 2024-03-06 | Ball valve with two-way pressure release function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117823663A true CN117823663A (en) | 2024-04-05 |
Family
ID=90524287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410252048.5A Pending CN117823663A (en) | 2024-03-06 | 2024-03-06 | Ball valve with two-way pressure release function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117823663A (en) |
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| JP2008169954A (en) * | 2007-01-12 | 2008-07-24 | Kitamura Valve Seizo Kk | Ball valve |
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| CN102889394A (en) * | 2011-07-21 | 2013-01-23 | 骆薛平 | Inward depressurizing high pressure soft sealing ball valve |
| KR101289873B1 (en) * | 2012-08-14 | 2013-08-07 | 주식회사 코밸 | A ball valve with dual seat-contact structures and an internal pressure releasing structure |
| CN205118317U (en) * | 2015-11-03 | 2016-03-30 | 天津百利展发集团有限公司 | Pressure automatically released's valve |
| CN205978580U (en) * | 2016-08-30 | 2017-02-22 | 超达阀门集团股份有限公司 | Ball valve floats with automatic pressure release function of lumen |
| CN210637536U (en) * | 2019-10-29 | 2020-05-29 | 浙江中天阀门有限公司 | Double-sealing ball valve |
| CN112326147A (en) * | 2020-10-29 | 2021-02-05 | 清华大学 | High-pressure gas seal detection test system with adjustable pressure release mode |
| CN213629051U (en) * | 2020-10-10 | 2021-07-06 | 江西洪都航空工业集团有限责任公司 | Oil return one-way valve capable of reversely releasing pressure |
| CN214036970U (en) * | 2021-01-04 | 2021-08-24 | 深圳市佑金自动化设备有限公司 | Flow regulator for air outlet of high pressure blower |
| CN117108793A (en) * | 2023-08-25 | 2023-11-24 | 扬州长运塑料技术股份有限公司 | New energy automobile oil tank valve |
-
2024
- 2024-03-06 CN CN202410252048.5A patent/CN117823663A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008169954A (en) * | 2007-01-12 | 2008-07-24 | Kitamura Valve Seizo Kk | Ball valve |
| CN201651402U (en) * | 2010-05-12 | 2010-11-24 | 浙江宏明阀门有限公司 | Fixed ball valve with long transportation pipeline |
| CN102889394A (en) * | 2011-07-21 | 2013-01-23 | 骆薛平 | Inward depressurizing high pressure soft sealing ball valve |
| KR101289873B1 (en) * | 2012-08-14 | 2013-08-07 | 주식회사 코밸 | A ball valve with dual seat-contact structures and an internal pressure releasing structure |
| CN205118317U (en) * | 2015-11-03 | 2016-03-30 | 天津百利展发集团有限公司 | Pressure automatically released's valve |
| CN205978580U (en) * | 2016-08-30 | 2017-02-22 | 超达阀门集团股份有限公司 | Ball valve floats with automatic pressure release function of lumen |
| CN210637536U (en) * | 2019-10-29 | 2020-05-29 | 浙江中天阀门有限公司 | Double-sealing ball valve |
| CN213629051U (en) * | 2020-10-10 | 2021-07-06 | 江西洪都航空工业集团有限责任公司 | Oil return one-way valve capable of reversely releasing pressure |
| CN112326147A (en) * | 2020-10-29 | 2021-02-05 | 清华大学 | High-pressure gas seal detection test system with adjustable pressure release mode |
| CN214036970U (en) * | 2021-01-04 | 2021-08-24 | 深圳市佑金自动化设备有限公司 | Flow regulator for air outlet of high pressure blower |
| CN117108793A (en) * | 2023-08-25 | 2023-11-24 | 扬州长运塑料技术股份有限公司 | New energy automobile oil tank valve |
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