CN212719193U - Low-temperature heat-insulation gas cylinder pressurization and pressure regulation valve - Google Patents
Low-temperature heat-insulation gas cylinder pressurization and pressure regulation valve Download PDFInfo
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- CN212719193U CN212719193U CN202020508211.7U CN202020508211U CN212719193U CN 212719193 U CN212719193 U CN 212719193U CN 202020508211 U CN202020508211 U CN 202020508211U CN 212719193 U CN212719193 U CN 212719193U
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- gas cylinder
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- 230000002035 prolonged effect Effects 0.000 abstract description 4
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- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a pressurization and pressure regulation valve of a low-temperature heat-insulation gas cylinder, which comprises a valve body, a valve cover and a diaphragm component, the valve body is arranged in the valve cover in a threaded manner, the diaphragm assembly is arranged at the lower end of the valve body, a pressurizing inlet, an air chamber, a pressurizing outlet and a valve clack assembly are arranged in the valve body, the air chamber is communicated with the pressurizing inlet and the pressurizing outlet, the valve clack assembly and the diaphragm assembly are in sealing contact to form a valve, the valve can block the communication of the pressurization inlet and the pressurization outlet, the air chamber is provided with a through hole, the diaphragm assembly is provided with a valve top, the valve top penetrates through the through hole, the whole device is simple in structure and ingenious in design, the problem that the diaphragm assembly is blocked easily in the moving process in the prior art can be effectively solved, meanwhile, the diaphragm assembly is effectively protected, and the service life of the diaphragm assembly is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the pressure control valve technique and specifically relates to a low temperature heat insulation gas cylinder pressure boost air-vent valve.
Background
The low-temp. valve belongs to the special valve, and is mainly used for outputting inflammable and explosive liquid low-temp. medium, such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas and liquefied petroleum product, etc.. In the prior art, because the vaporization temperature of liquid gas in a gas chamber is low and the air temperature at a pressure ring is high, the contact surface between a diaphragm cushion block and the pressure ring forms dewing and water condensation phenomena due to temperature difference, so that the diaphragm assembly has a blocking phenomenon; in addition, when the pressure-boosting pressure regulating valve in the prior art adjusts the pressure-boosting pressure value, the pressure value is generally changed by directly adjusting the adjusting screw rod, but the pressure value is easily adjusted by the adjusting screw rod in a mode of directly adjusting the pressure value to cause the diaphragm assembly to be damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a adiabatic gas cylinder pressure boost air-vent valve of low temperature, its difference of overcoming prior art, its simple structure, design benefit can avoid the diaphragm subassembly to appear blocking the phenomenon and leading to the phenomenon emergence that the valve can't be closed effectively, and what its simultaneously can be good carries out the pressure boost operation to the gas cylinder, has prolonged its life.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a low temperature adiabatic gas cylinder pressure boost air-vent valve includes valve body, valve gap and diaphragm subassembly, the valve body screw thread install in the valve gap, the diaphragm subassembly set up in the lower extreme of valve body, be equipped with pressure boost entry, air chamber, pressure boost export and valve clack subassembly in the valve body, the air chamber intercommunication pressure boost entry and pressure boost export, the valve clack subassembly with diaphragm subassembly sealing contact forms the valve, the valve can the separation pressure boost entry and the intercommunication of pressure boost export, be equipped with the through-hole on the air chamber, be equipped with the valve top on the diaphragm subassembly, the valve top passes the through-hole.
According to the utility model discloses an embodiment, the structure of valve top is T shape valve top, the bottom butt of valve clack subassembly in the upper end of valve top.
According to the utility model discloses an embodiment, the diaphragm subassembly includes big packing ring, diaphragm and diaphragm cushion, big packing ring set up in the lower extreme of air chamber, the diaphragm set up in the below of big packing ring, the diaphragm cushion set up in the below of diaphragm.
According to the utility model discloses an embodiment, be equipped with the clamping ring on the valve body, the clamping ring set up in the below of air chamber, the clamping ring be plane annular structure, and not with the contact of diaphragm cushion.
According to the utility model discloses an embodiment, the below of diaphragm subassembly is equipped with adjusting part, adjusting part includes pressure regulating spring, spring cushion, adjusting nut, nut and adjusting screw, the one end rigid coupling of pressure regulating spring in the diaphragm cushion, other end rigid coupling in the spring cushion, adjusting nut set up in the lower extreme of spring cushion, and threaded connection in on the valve bonnet, adjusting screw connects adjusting nut, and the butt in the spring cushion, the nut can be right adjusting screw carries out the locking operation.
According to the utility model discloses an embodiment, valve clack subassembly's upper end is equipped with spring and plug screw, plug screw threaded connection in the valve body, valve clack unit mount in the plug screw, the one end of spring is connected valve clack subassembly, the other end is connected the plug screw.
The utility model has the advantages that: by adopting the technical scheme, the utility model has simple structure and ingenious and reasonable design, and can effectively realize the pressure regulation operation in the gas cylinder; the valve is provided with the through hole and the T-shaped valve top, so that the moving position of the diaphragm assembly can be effectively limited by the T-shaped structure while the pressure in the gas cylinder is regulated, the diaphragm can be effectively prevented from being damaged due to excessive downward movement of the diaphragm assembly, the practical performance of the valve is safer and more reliable, and the service life of the valve is prolonged; the compression ring is not in contact with the diaphragm cushion block, so that the phenomena of condensation, icing and the like caused by temperature difference do not exist, the phenomenon of blocking caused by the movement of the diaphragm assembly is avoided, and the stability and the flexibility of the movement of the diaphragm assembly are ensured; the diaphragm assembly is provided with the adjusting assembly, so that the pressure boosting value can be adjusted more safely and reliably, and the safe use of the diaphragm assembly is ensured.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment according to the present invention.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 1 to 2, a pressure regulating valve 1 for pressurizing a cryogenic insulation gas cylinder comprises a valve body 10, a valve cover 20 and a diaphragm assembly 30, wherein the valve body 10 is installed in the valve cover 20 in a threaded manner, the diaphragm assembly 30 is arranged at the lower end of the valve body 10, a pressurizing inlet 11, an air chamber 12, a pressurizing outlet 13 and a valve flap assembly 14 are arranged in the valve body 10, the air chamber 12 is communicated with the pressurizing inlet 11 and the pressurizing outlet 13, the valve flap assembly 14 is in sealing contact with the diaphragm assembly 30 to form a valve 15, the valve 15 can control the communication between the pressurizing inlet 11 and the pressurizing outlet 13, and the operation of gas communication between the pressurizing inlet 11 and the pressurizing outlet 13 can be realized by controlling the opening and closing of the valve 15; a through hole 121 is arranged on the air chamber 12, a valve top 31 is arranged on the diaphragm component 30, the valve top 31 passes through the through hole 121, and when the valve top works, the pressurizing inlet 11, the pressurizing outlet 13 and the gas chamber 12 flow liquefied gas, such as liquid oxygen, liquid argon, liquid nitrogen, liquefied natural gas and the like, the lowest temperature can reach-196 ℃, when the liquefied gas in the pressure increasing pipeline is vaporized, the volume of the gas vaporized in the pressure increasing pipeline is larger than that of the liquefied gas, the pressure in the gas cylinder is increased, when the set value is raised, the gas presses the diaphragm assembly 30 to move downwards, and the valve flap assembly 14 moves downwards under the action of the spring 50, whereby the valve flap assembly 14 performs a blocking operation between the pressurizing inlet 11 and the pressurizing outlet 13, whereby the valve 15 is closed and the pressure-increasing pressure-regulating valve 1 is operated to increase pressure.
The valve top 31 is a T-shaped valve top 31, the bottom end of the valve flap 14 abuts against the upper end of the valve top 31, the diaphragm assembly 30 and the valve flap 14 control the communication between the pressurization inlet 11 and the pressurization outlet 13, the valve top 31 of the T-shaped structure can effectively move up and down in the through hole 121, and the through hole 121 is a U-shaped cross hole, so that when the diaphragm assembly 30 moves down to a certain value, the T-shape on the valve top 31 can be limited by contacting with the transverse U-shaped plane on the through hole 121, and the diaphragm assembly 30 can be effectively prevented from moving down too much to damage the diaphragm 33, thereby the pressurization and pressure regulation valve 1 is safer and more reliable in use.
The diaphragm assembly 30 comprises a large gasket 32, a diaphragm 33 and a diaphragm cushion block 34, the large gasket 32 is arranged at the lower end of the air chamber 12, the diaphragm 33 is arranged below the large gasket 32, the diaphragm cushion block 34 is arranged below the diaphragm 33, the large gasket 32 can buffer and seal the air chamber 12 and the diaphragm 33, so that the sealing performance of the large gasket is improved, the diaphragm 33 is protected, the diaphragm cushion block 34 is connected with the pressure regulating spring 41, and therefore the regulating assembly 40 can regulate the diaphragm assembly 30 to move up and down through the diaphragm cushion block 34, and pressure regulating operation in the air cylinder is achieved.
Wherein, be equipped with clamping ring 16 on valve body 10, clamping ring 16 set up in the below of air chamber 12, clamping ring 16 be plane annular structure, and not with diaphragm cushion 34 contacts, can avoid effectively among the prior art because diaphragm assembly 30 with contact surface between the clamping ring 16 forms the emergence of phenomena such as condensation, icing owing to the difference in temperature, simultaneously because its both contactless can not produce the phenomenon of icing, thereby can guarantee effectively diaphragm assembly 30 can carry out nimble removal, the card can not appear hindering the phenomenon, thereby has guaranteed wholly 15 control process's of valve stability has prolonged its life.
Wherein, an adjusting component 40 is arranged below the diaphragm component 30, the adjusting component 40 includes a pressure adjusting spring 41, a spring cushion block 42, an adjusting nut 43, a nut 44 and an adjusting screw rod 45, one end of the pressure adjusting spring 41 is fixedly connected to the diaphragm cushion block 34, the other end is fixedly connected to the spring cushion block 42, the adjusting nut 43 is arranged at the lower end of the spring cushion block 42 and is in threaded connection with the bonnet 20, the adjusting screw rod 45 is connected to the adjusting nut 43 and abuts against the spring cushion block 42, the adjusting screw rod 45 can be locked by the nut 44, when the pressurization setting value needs to be adjusted, only the adjusting nut 43 needs to be rotated, the adjusting nut 43 can abut against the spring cushion block 42, and thus the adjusting nut 43 can drive the pressure adjusting spring 41 to move up and down through the spring cushion block 42, therefore, preliminary adjustment is realized, the valve cover 20 is provided with a screw hole 21, the screw hole 21 is perpendicular to the adjusting nut 43, after the adjusting nut 43 is adjusted, a conical end fastening screw is inserted into the screw hole 21 for locking, and the adjusting nut 43 can also play a limiting role on the adjusting screw rod 45, so that excessive adjustment of the adjusting screw rod 45 is avoided; subsequently, by rotating the adjusting screw 45, the adjusting screw 45 can adjust the pressure adjusting spring 41 by pushing the spring cushion 42, and when a set value to be adjusted is reached, the adjusting screw 45 can be locked by the nut 44, and this adjusting manner can achieve the effect of adjusting the boost pressure value and simultaneously can perform a protective effect on the diaphragm assembly 30, so that the situation that the diaphragm assembly 30 is damaged due to excessive adjustment of the adjusting screw 45 can be effectively avoided.
The upper end of the valve clack assembly 14 is provided with a spring 50 and a screw plug 60, the screw plug 60 is in threaded connection with the valve body 10, the valve clack assembly 14 is installed in the screw plug 60, one end of the spring 50 is connected with the valve clack assembly 14, the other end of the spring 50 is connected with the screw plug 60, when the gas pressure required to be increased in the gas cylinder reaches a set value, the gas in the gas chamber 12 can extrude the diaphragm assembly 30, the diaphragm assembly 30 moves downwards, and therefore the valve clack assembly 14 is pressed downwards under the action of the elastic force of the spring 50, and the valve 15 is closed; when the air pressure in the gas cylinder is too low, the pressure regulating spring 41 pushes the diaphragm assembly 30 upwards, the diaphragm assembly 30 drives the valve flap assembly 14 to move upwards, and therefore the valve 15 is opened, so that the device enables the valve 15 to work in a closed-open-closed cycle reciprocating motion.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a low temperature adiabatic gas cylinder pressure boost air-vent valve, its characterized in that, includes valve body, valve gap and diaphragm subassembly, the valve body screw thread install in the valve gap, the diaphragm subassembly set up in the lower extreme of valve body, be equipped with pressure boost entry, air chamber, pressure boost export and valve clack subassembly in the valve body, the air chamber intercommunication the pressure boost entry and the pressure boost export, valve clack subassembly with diaphragm subassembly sealing contact forms the valve, the valve can the separation the pressure boost entry and the intercommunication of pressure boost export, be equipped with the through-hole on the air chamber, be equipped with the valve top on the diaphragm subassembly, the valve top passes the through-hole.
2. The cryogenic insulating gas cylinder pressure regulating valve according to claim 1, wherein the valve top is in the form of a T-shaped valve top, and the bottom end of the valve flap assembly abuts against the upper end of the valve top.
3. The cryogenic insulating gas cylinder pressure increasing and regulating valve according to claim 2, wherein the diaphragm assembly comprises a large washer, a diaphragm and a diaphragm pad, the large washer is arranged at the lower end of the gas chamber, the diaphragm is arranged below the large washer, and the diaphragm pad is arranged below the diaphragm.
4. The low-temperature heat-insulating gas cylinder pressurization and pressure-regulating valve according to claim 3, characterized in that a pressure ring is arranged on the valve body, the pressure ring is arranged below the gas chamber, and the pressure ring is of a planar annular structure and is not in contact with the diaphragm cushion block.
5. The low-temperature heat-insulating gas cylinder pressurization and pressure-regulating valve according to claim 4, characterized in that an adjusting component is arranged below the diaphragm component, the adjusting component comprises a pressure-regulating spring, a spring cushion block, an adjusting nut, a nut and an adjusting screw rod, one end of the pressure-regulating spring is fixedly connected to the diaphragm cushion block, the other end of the pressure-regulating spring is fixedly connected to the spring cushion block, the adjusting nut is arranged at the lower end of the spring cushion block and is in threaded connection with the valve cover, the adjusting screw rod is connected with the adjusting nut and abuts against the spring cushion block, and the nut can lock the adjusting screw rod.
6. The low-temperature heat-insulating gas cylinder pressurization and pressure-regulating valve according to claim 5, characterized in that a spring and a plug screw are arranged at the upper end of the valve flap assembly, the plug screw is connected to the valve body in a threaded manner, the valve flap assembly is installed in the plug screw, one end of the spring is connected to the valve flap assembly, and the other end of the spring is connected to the plug screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020508211.7U CN212719193U (en) | 2020-04-09 | 2020-04-09 | Low-temperature heat-insulation gas cylinder pressurization and pressure regulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020508211.7U CN212719193U (en) | 2020-04-09 | 2020-04-09 | Low-temperature heat-insulation gas cylinder pressurization and pressure regulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212719193U true CN212719193U (en) | 2021-03-16 |
Family
ID=74905527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020508211.7U Expired - Fee Related CN212719193U (en) | 2020-04-09 | 2020-04-09 | Low-temperature heat-insulation gas cylinder pressurization and pressure regulation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212719193U (en) |
-
2020
- 2020-04-09 CN CN202020508211.7U patent/CN212719193U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210316 |