CN112682549B - Compact pressure regulating valve suitable for low-temperature storage tank - Google Patents
Compact pressure regulating valve suitable for low-temperature storage tank Download PDFInfo
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- CN112682549B CN112682549B CN202011564703.9A CN202011564703A CN112682549B CN 112682549 B CN112682549 B CN 112682549B CN 202011564703 A CN202011564703 A CN 202011564703A CN 112682549 B CN112682549 B CN 112682549B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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Abstract
The invention relates to the field of machinery. The compact pressure regulating valve is suitable for a low-temperature storage tank, and comprises a pressure regulating mechanism and a pressure regulating mechanism, wherein the pressure regulating mechanism comprises a pressure regulating ring, an outer cover, a piston and a spring; the outer cover is detachably connected with the valve cover; the top of the valve cover is provided with an extending part which extends upwards, and the periphery of the extending part is in threaded connection with a pressure regulating ring; the spring is clamped between the pressure regulating ring and the piston, the piston is connected with the outer cover in a sliding mode, a piston cavity is formed by the top of the piston and the outer cover in a surrounding mode, and the piston is connected with the valve rod; the valve rod is provided with a flow guide channel, one end of the flow guide channel is communicated with the piston cavity, and the other end of the flow guide channel is communicated with the low pressure cavity. Through operation pressure regulating ring, can realize the regulation of spring force, and then realize the regulation of valve clack pressure of opening and close.
Description
Technical Field
The invention relates to the field of machinery, in particular to a pressure regulating valve.
Background
In the low-temperature storage tank, the liquid-phase low-temperature medium in the storage tank flows into the vaporization pipe through the heat absorption vaporization characteristic of the low-temperature medium, the vaporization pipe is connected with the gas phase of the storage tank, and the pressure of the storage tank is increased through the vaporization of the medium. The use pressure required by the user is met. In order to control the boosting pressure, the diaphragm is mainly used for sensing the pressure to open and close the valve at the present stage, so that the purpose of controlling the pressure is achieved.
Application number 201911318897.1 discloses a large-bore piston type pressure regulating valve, which comprises a valve body, wherein an upper cavity and a lower cavity are arranged in the valve body, a valve clack is arranged in the lower cavity, a lower valve cover is arranged on a lower opening of the lower cavity, the lower end part of the valve clack is connected with the lower valve cover, a lower spring is arranged between the valve clack and the lower valve cover, an upper valve cover is arranged on an upper opening of the upper cavity, the upper valve cover is connected with a cylinder body through a connecting pipe, a valve rod is arranged in the connecting pipe, the lower end part of the valve rod is clamped with the top of the valve clack, and the upper end part of the valve rod is connected with a piston; the piston sets up in the cylinder body, and the junction of piston and cylinder body is equipped with O type sealing washer, and the piston reciprocates along the length direction of cylinder body, and the cylinder body is fixed with a cylinder cap, is equipped with spring and cushion in the cylinder cap, and the spring is located between piston and the cushion, and the top of cylinder cap is equipped with an adjusting screw, and adjusting screw offsets with the upper surface of cushion.
Above-mentioned pressure regulating valve occupies bulkyly, and the part is many moreover, needs adjusting screw to exert force in the top of last spring to pressure regulating part, and adjusting screw is located the below of spring, so need dustcoat protection adjusting screw, great increase the volume of device, be unfavorable for present miniaturized design demand.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a compact pressure regulating valve suitable for a low-temperature storage tank, so as to solve the problem that the existing pressure regulating valve occupies a large volume.
The technical scheme of the invention is as follows: the compact type pressure regulating valve suitable for the low-temperature storage tank comprises a pressure regulating valve body, wherein the pressure regulating valve body comprises a valve body and a valve cover, a guide hole used for being connected with a valve rod in a sliding mode is formed in the valve cover, the lower end of the valve rod is connected with a valve clack, a high-pressure cavity and a low-pressure cavity are formed in the valve body, a sealing seat is arranged between the high-pressure cavity and the low-pressure cavity, the valve clack is used for plugging the sealing seat, the valve clack is located in the low-pressure cavity and located above the sealing seat, and the compact type pressure regulating valve is characterized by further comprising a pressure regulating mechanism, and the pressure regulating mechanism comprises a pressure regulating ring, an outer cover, a piston and a spring;
the outer cover is detachably connected with the valve cover;
the top of the valve cover is provided with an extending part extending upwards, and the periphery of the extending part is in threaded connection with a pressure regulating ring;
the outer cover is provided with a notch for operating the voltage regulating ring;
the spring is clamped between the pressure regulating ring and the piston, the piston is connected with the outer cover in a sliding mode, a piston cavity is formed by the top of the piston and the outer cover in a surrounding mode, and the piston is connected with the valve rod;
a flow guide channel is formed in the valve rod, one end of the flow guide channel is communicated with the piston cavity, and the other end of the flow guide channel is communicated with the low-pressure cavity.
This patent is through optimizing the structure of air-vent valve, through operation pressure regulating ring, can realize the regulation of spring force, and then realizes the regulation of valve clack opening and closing pressure.
The high-pressure cavity is communicated with the storage tank in a gas phase mode, and the low-pressure cavity is communicated with the storage tank in a liquid phase mode.
When the pressure of the low pressure cavity reaches the required design pressure, the piston is pushed by the gas pressure to overcome the elasticity of the spring to move downwards, and then the valve clack is driven to block and isolate the high pressure cavity and the low pressure cavity, so that the pressure of the low pressure cavity does not rise any more, and the pressure of the low pressure cavity does not rise any more.
When the pressure of the low-pressure cavity is lower than the design pressure, the piston is driven by the thrust of the spring to move upwards, and the communication between the high-pressure cavity and the low-pressure cavity is opened.
This patent switches on through low-pressure chamber and piston chamber, in case valve clack department has the particle to lead to when leaking gas, the partial gas of high-pressure chamber gets into the low-pressure chamber, and then leads to the atmospheric pressure increase in piston chamber, has increased the pressure to the valve clack, improves the sealed effect of valve clack.
Further preferably, the piston is provided with a threaded hole for mounting a valve rod, and a gap is reserved between the top of the valve rod and the top of the outer cover.
The flow guide of the piston cavity is convenient.
Further preferably, the top of the piston is provided with an annular groove.
The flow guide of the piston cavity is facilitated, and the contact area is increased.
Further preferably, the outer cover comprises a cylinder body with an upper opening and a lower opening and a gland, and the cylinder body is detachably connected with the gland.
Is convenient to disassemble.
Further preferably, the top of the cylinder is a piston accommodating part, and the piston is connected with the piston accommodating part in a sliding manner;
the inner diameter of the area of the cylinder body below the piston accommodating part is smaller than that of the piston accommodating part.
The piston is limited by the piston accommodating part conveniently.
Further preferably, a limit groove is formed on the extending part of the valve cover;
the top of the valve cover is in threaded connection with a packing pressing cap, sealing packing is clamped between the packing pressing cap and the limiting groove, and the sealing packing is located between the extending portion of the valve cover and the valve rod.
The sealing performance between the valve rod and the valve cover is convenient to realize.
Further preferably, a compression ring is clamped between the sealing filler and the filler pressing cap.
Further preferably, a sealing ring is arranged between the piston and the outer cover.
Further preferably, the valve cover and the valve body are arranged up and down, and a sealing ring is clamped between the valve cover and the valve body;
the valve cover pressing cap is characterized by further comprising a valve cover pressing cap, a through hole is formed in the center of the valve cover pressing cap, the top of the valve cover pressing cap abuts against the valve cover, and the valve cover pressing cap is in threaded connection with the valve body.
The valve cover and the valve body can be spliced conveniently through the structure of the valve cover pressing cap.
Further preferably, the valve body is provided with a diversion hole;
the lower part of the valve clack is detachably connected with the compression gasket through a screw;
a sealing gasket is clamped between the valve plate and the pressing gasket and used for plugging the diversion hole.
The sealing effect between the diversion hole and the sealing gasket is convenient to realize.
Drawings
FIG. 1 is a cross-sectional view of the present invention in an open state;
fig. 2 is a cross-sectional view of the present invention in a closed state.
In the figure: the valve comprises a valve body 1, a valve cover 2, a valve cover pressing cap 3, a cylinder 4, a pressing cover 5, a piston 6, sealing filler 7, a pressing ring 8, a packing pressing cap 9, a spring 10, a pressure regulating ring 11, a valve clack 12, a nut 13, a sealing gasket 14, a pressing gasket 15 and a screw 16.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In specific embodiment 1, referring to fig. 1 to 2, a compact pressure regulating valve suitable for a low temperature storage tank includes a pressure regulating valve body, the pressure regulating valve body includes a valve body 1 and a valve cover 2, the valve cover 2 is provided with a guide hole for slidably connecting a valve rod, the lower end of the valve rod is connected with a valve flap 12, the valve body 1 is provided with a high pressure chamber and a low pressure chamber, a sealing seat is arranged between the high pressure chamber and the low pressure chamber, the valve flap 12 is used for plugging the sealing seat, the valve flap 12 is located in the low pressure chamber and above the sealing seat, and the pressure regulating valve further includes a pressure regulating mechanism, the pressure regulating mechanism includes a pressure regulating ring 11, an outer cover, a piston 6 and a spring 10; the outer cover is detachably connected with the valve cover 2; the top of the valve cover 2 is provided with an extending part which extends upwards, and the periphery of the extending part is in threaded connection with a pressure regulating ring 11; the outer cover is provided with a notch for operating the voltage regulating ring 11; the spring 10 is clamped between the pressure regulating ring 11 and the piston 6, and the piston 6 is connected with the outer cover in a sliding mode. This patent is through optimizing the structure of air-vent valve, through operation pressure regulating ring 11, can realize the regulation of spring 10 elasticity, and then realizes the regulation of valve clack 12 cracking pressure.
The high-pressure cavity is communicated with the storage tank in a gas phase mode, and the low-pressure cavity is communicated with the storage tank in a liquid phase mode. When the pressure of the low pressure cavity reaches the required design pressure, the piston is pushed by the gas pressure to overcome the elasticity of the spring to move downwards, and then the valve clack is driven to block and isolate the high pressure cavity and the low pressure cavity, so that the pressure of the low pressure cavity does not rise any more, and the pressure of the low pressure cavity does not rise any more. When the pressure of the low-pressure cavity is lower than the design pressure, the piston is driven to move upwards by the thrust of the spring, and the circulation between the high-pressure cavity and the low-pressure cavity is opened.
This patent switches on through low-pressure chamber and piston chamber, in case valve clack department has the particle to lead to when leaking gas, the partial gas of high-pressure chamber gets into the low-pressure chamber, and then leads to the atmospheric pressure increase in piston chamber, has increased the pressure to the valve clack, improves the sealed effect of valve clack.
The piston is provided with a threaded hole for installing a valve rod, and a gap is reserved between the top of the valve rod and the top of the outer cover. The flow guide of the piston cavity is convenient. The top of the piston is provided with an annular groove. The flow guide of the piston cavity is facilitated, and the contact area is increased.
The dustcoat includes barrel 4 and gland 5 of upper and lower open-ended, and barrel 4 and gland 5 are detachable to be connected. Is convenient to disassemble. The top of the cylinder 4 is a piston 6 accommodating part, and the piston 6 is connected with the piston 6 accommodating part in a sliding way; the area of the cylinder 4 below the piston 6 receiver has a smaller inner diameter than the inner diameter of the piston 6 receiver. So that the piston 6 can be limited by the accommodating part of the piston 6. A sealing ring is arranged between the piston 6 and the outer cover.
A limit groove is arranged on the extending part of the valve cover 2; the top of the valve cover 2 is in threaded connection with a packing pressing cap 9, a sealing packing 7 is clamped between the packing pressing cap 9 and the limiting groove, and the sealing packing 7 is located between the extending portion of the valve cover 2 and the valve rod. The sealing performance between the valve rod and the valve cover 2 is convenient to realize. And a compression ring 8 is clamped between the sealing packing 7 and the packing pressing cap 9.
The valve cover 2 and the valve body 1 are arranged up and down, and a sealing ring is clamped between the valve cover 2 and the valve body 1; still include a valve gap pressure cap 3, the through-hole has been seted up to the central authorities that the cap 3 was pressed to the valve gap, and the top that the cap 3 was pressed to the valve gap offsets with valve gap 2, and the cap 3 is pressed to the valve gap and 1 threaded connection with the valve body. Through the structure of the valve cover pressing cap 3, the valve cover 2 and the valve body 1 can be spliced conveniently.
A diversion hole is arranged on the valve body 1; the lower part of the valve clack 12 is detachably connected with a compression gasket 15 through a screw 16; a sealing gasket 14 is clamped between the valve plate and the pressing gasket 15, and the sealing gasket 14 is used for plugging the diversion hole. The sealing effect between the diversion hole and the sealing gasket 14 is convenient to realize.
The bottom of the valve rod is provided with an annular protrusion, the valve clack 12 is connected with a nut 13 in a threaded mode, and the lower end of the nut 13 abuts against the annular protrusion. Facilitating the connection of the valve stem to the valve flap 12.
A liquid storage bag is fixed on the top of the piston, and liquid metal is stored in the liquid storage bag. The liquid metal is easy to gasify, when the temperature in the valve body exceeds the volatilization temperature of the liquid metal, the liquid metal is gasified, the volume of the piston cavity is increased, and the valve clack is closed to form the high-pressure cavity and the low-pressure cavity.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (9)
1. The compact pressure regulating valve suitable for the low-temperature storage tank comprises a pressure regulating valve body, wherein the pressure regulating valve body comprises a valve body and a valve cover, a guide hole used for being connected with a valve rod in a sliding mode is formed in the valve cover, the lower end of the valve rod is connected with a valve clack, a high-pressure cavity and a low-pressure cavity are formed in the valve body, a sealing seat is arranged between the high-pressure cavity and the low-pressure cavity, the valve clack is used for plugging the sealing seat, the valve clack is located in the low-pressure cavity and located above the sealing seat, and the compact pressure regulating valve is characterized by further comprising a pressure regulating mechanism, and the pressure regulating mechanism comprises a pressure regulating ring, an outer cover, a piston and a spring;
the outer cover is detachably connected with the valve cover;
the top of the valve cover is provided with an extending part extending upwards, and the periphery of the extending part is in threaded connection with a pressure regulating ring;
a notch for operating the pressure regulating ring is formed in the side wall of the outer cover;
the spring is clamped between the pressure regulating ring and the piston, the piston is connected with the outer cover in a sliding mode, a piston cavity is formed by the top of the piston and the outer cover in a surrounding mode, and the piston is connected with the valve rod;
a flow guide channel is formed in the valve rod, one end of the flow guide channel is communicated with the piston cavity, and the other end of the flow guide channel is communicated with the low-pressure cavity;
a liquid storage bag is fixed to the top of the piston, and liquid metal is stored in the liquid storage bag.
2. The compact pressure regulating valve for cryogenic storage tanks of claim 1, wherein: the outer cover comprises a cylinder body with an upper opening and a lower opening and a gland, and the cylinder body is detachably connected with the gland.
3. The compact pressure regulating valve for cryogenic storage tanks according to claim 2, wherein: the top of the cylinder body is provided with a piston accommodating part, and the piston is connected with the piston accommodating part in a sliding manner;
the inner diameter of the area of the cylinder body below the piston accommodating part is smaller than that of the piston accommodating part.
4. The compact pressure regulating valve for cryogenic storage tanks of claim 1, wherein: a limit groove is formed in the extending part of the valve cover;
the top of the valve cover is in threaded connection with a packing pressing cap, sealing packing is clamped between the packing pressing cap and the limiting groove, and the sealing packing is located between the extending portion of the valve cover and the valve rod.
5. The compact pressure regulating valve for cryogenic storage tanks of claim 4, wherein: and a compression ring is clamped between the sealing filler and the filler pressing cap.
6. The compact pressure regulating valve for cryogenic storage tanks according to claim 1 wherein: and a sealing ring is arranged between the piston and the outer cover.
7. The compact pressure regulating valve for cryogenic storage tanks of claim 1, wherein: the valve cover and the valve body are arranged up and down, and a sealing ring is clamped between the valve cover and the valve body;
the valve cover pressing cap is characterized by further comprising a valve cover pressing cap, a through hole is formed in the center of the valve cover pressing cap, the top of the valve cover pressing cap abuts against the valve cover, and the valve cover pressing cap is in threaded connection with the valve body.
8. The compact pressure regulating valve for cryogenic storage tanks according to claim 1 wherein: the valve body is provided with a flow guide hole;
the lower part of the valve clack is detachably connected with the compression gasket through a screw;
a sealing gasket is clamped between the valve clack and the pressing gasket and used for plugging the diversion hole.
9. The compact pressure regulating valve for cryogenic storage tanks according to claim 1 wherein: the piston is provided with a threaded hole for installing a valve rod, and a gap is reserved between the top of the valve rod and the top of the outer cover; the top of the piston is provided with an annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011564703.9A CN112682549B (en) | 2020-12-25 | 2020-12-25 | Compact pressure regulating valve suitable for low-temperature storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011564703.9A CN112682549B (en) | 2020-12-25 | 2020-12-25 | Compact pressure regulating valve suitable for low-temperature storage tank |
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| Publication Number | Publication Date |
|---|---|
| CN112682549A CN112682549A (en) | 2021-04-20 |
| CN112682549B true CN112682549B (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011564703.9A Active CN112682549B (en) | 2020-12-25 | 2020-12-25 | Compact pressure regulating valve suitable for low-temperature storage tank |
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| Country | Link |
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| CN (1) | CN112682549B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400817A (en) * | 1993-01-27 | 1995-03-28 | Richard Voss Grubenausbau Gmbh | High-capacity pressure limiting valve |
| CN101625043A (en) * | 2009-08-13 | 2010-01-13 | 凯迈（洛阳）气源有限公司 | High-pressure reducing valve |
| CN201661741U (en) * | 2010-04-09 | 2010-12-01 | 浙江华龙阀门有限公司 | Piston type reducing valve |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN102274602A (en) * | 2011-06-01 | 2011-12-14 | 浙江信达可恩消防实业有限责任公司 | Container valve |
| CN102313054A (en) * | 2011-08-19 | 2012-01-11 | 浙江盾安阀门有限公司 | Piston type pressure reducing valve |
| CN204900842U (en) * | 2015-07-31 | 2015-12-23 | 宁波新佳行自动化工业有限公司 | Special mini relief pressure valve of air compressor machine |
| JP2017227308A (en) * | 2016-06-24 | 2017-12-28 | 株式会社ケーヒン | Pressure reduction valve for gas |
| CN110486511A (en) * | 2019-09-06 | 2019-11-22 | 新乡航空工业(集团)有限公司 | A kind of pressure regulator valve |
-
2020
- 2020-12-25 CN CN202011564703.9A patent/CN112682549B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400817A (en) * | 1993-01-27 | 1995-03-28 | Richard Voss Grubenausbau Gmbh | High-capacity pressure limiting valve |
| CN101625043A (en) * | 2009-08-13 | 2010-01-13 | 凯迈（洛阳）气源有限公司 | High-pressure reducing valve |
| CN201661741U (en) * | 2010-04-09 | 2010-12-01 | 浙江华龙阀门有限公司 | Piston type reducing valve |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN102274602A (en) * | 2011-06-01 | 2011-12-14 | 浙江信达可恩消防实业有限责任公司 | Container valve |
| CN102313054A (en) * | 2011-08-19 | 2012-01-11 | 浙江盾安阀门有限公司 | Piston type pressure reducing valve |
| CN204900842U (en) * | 2015-07-31 | 2015-12-23 | 宁波新佳行自动化工业有限公司 | Special mini relief pressure valve of air compressor machine |
| JP2017227308A (en) * | 2016-06-24 | 2017-12-28 | 株式会社ケーヒン | Pressure reduction valve for gas |
| CN110486511A (en) * | 2019-09-06 | 2019-11-22 | 新乡航空工业(集团)有限公司 | A kind of pressure regulator valve |
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| Publication number | Publication date |
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| CN112682549A (en) | 2021-04-20 |
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