CN203686340U - Throttling base for safety valve of low-temperature heat insulation gas cylinder - Google Patents
Throttling base for safety valve of low-temperature heat insulation gas cylinder Download PDFInfo
- Publication number
- CN203686340U CN203686340U CN201420044482.6U CN201420044482U CN203686340U CN 203686340 U CN203686340 U CN 203686340U CN 201420044482 U CN201420044482 U CN 201420044482U CN 203686340 U CN203686340 U CN 203686340U
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- Prior art keywords
- spool
- cavity
- safety valve
- air outlet
- gas
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- Expired - Lifetime
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- 238000009413 insulation Methods 0.000 title abstract 3
- 238000013022 venting Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 27
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a throttling base for a safety valve of a low-temperature heat insulation gas cylinder. The throttling base comprises a valve body, a reset spring, a valve element and a gas outlet connector. A gas inlet cavity is formed in the front end of the valve body, a movable cavity is formed in the rear end of the valve body, the gas inlet cavity and the movable cavity are communicated, a gas outlet cavity is formed in the gas outlet connector, the front end of the gas outlet connector is connected with the rear end of the valve body, the valve element and the reset spring are located in the movable cavity, one end of the reset spring abuts against the valve body, the other end of the reset spring abuts against the front end of the valve element, the external diameter of the tail end of the valve element is larger than the internal diameter of the gas outlet cavity, the valve element is provided with a valve element ventilation channel, one end of the valve element ventilation channel is communicated with the movable cavity, and the other end of the valve element ventilation channel is attached to the gas outlet connector. When the safety valve is demounted, the throttling base can automatically seal a gas leakage gas path inside the low-temperature heat insulation gas cylinder, and when a new safety valve which is checked to be qualified is mounted, the throttling base automatically opens the gas path, and therefore gas energy is saved, and the risk of accidents caused by release of flammable and combustible gas is avoided.
Description
Technical field
The present invention relates to safety valve field, particularly a kind of cryogenic insulated cylinder safety valve solar term seat.
Background technique
Cryogenic insulated cylinder divides industrial gas, LNG Liquefied natural gas and automobile liquefied natural gas bottle, and it is applied in the various fields such as biology, medicine, chemical industry, machinery, metallurgy, traffic widely as transportable pressure vessel.Cryogenic insulated cylinder safety valve is as the important safety attachment of cryogenic insulated cylinder; play the effect of safety protection; cryogenic insulated cylinder safety valve needs periodic check; existing periodic check method is by after direct the gas in cryogenic insulated cylinder emptying; the lower safety valve of dismounting, then changes the qualified safety valve of new verification, and this way is not only the waste to Gas Energy Source; run into inflammable and explosive gas, also have the serious risk leading to a disaster.
In order to address the above problem, a kind of rational in infrastructure, working life is of a specified duration, the reliable cryogenic insulated cylinder safety valve of Security solar term seat becomes related domain study hotspot.
Summary of the invention
In order to overcome the technical problem existing in prior art, the invention provides a kind of gas that needn't discharge in gas cylinder and can unload the cryogenic insulated cylinder safety valve solar term seat that safety valve detects.
The technical solution that realizes the object of the invention is: a kind of cryogenic insulated cylinder safety valve solar term seat, comprise valve body, Returnning spring, spool, air outlet adapter, valve body front end is provided with air inlet cavity and rear end is provided with mobile cavity, air inlet cavity and mobile cavity are communicated with, in air outlet adapter, being provided with give vent to anger cavity and front end is connected with valve rear end, spool and Returnning spring are positioned at mobile cavity, wherein one end of Returnning spring is pressed on valve body, the other end of Returnning spring is pressed on the tail end of spool, spool front end external diameter is greater than the internal diameter of the cavity of giving vent to anger, and spool is provided with spool venting channels, spool venting channels one end communicates with mobile cavity, the other end and air outlet adapter wall are close to.
The present invention compared with prior art, its remarkable advantage: when (1) detects safety valve, without unloading safety valve, solar term seat seals the gas circuit that in cryogenic insulated cylinder, gas is released automatically, while loading onto the qualified safety valve of new verification, solar term seat is opened gas gas circuit automatically, has not only saved Gas Energy Source, has also avoided flammable explosive gas to discharge the risk leading to a disaster; (2) the present invention is simple in structure, and cost is lower, is convenient to production and processing.
Brief description of the drawings
Fig. 1 is cryogenic insulated cylinder safety valve solar term seat sectional drawing;
Fig. 2 is the cryogenic insulated cylinder safety valve solar term seat sectional drawing with safety valve;
Fig. 3 is cryogenic insulated cylinder safety valve solar term seat sectional axonometric drawing.
Embodiment
Below in conjunction with accompanying drawing, describe cryogenic insulated cylinder safety valve solar term seat provided by the invention in detail by mode of execution.Should be understood that these enforcements are only not used in and limit the scope of the invention for the present invention is described.
A kind of cryogenic insulated cylinder safety valve solar term seat of the present invention, comprise valve body 1, Returnning spring 3, spool 4, air outlet adapter 11, valve body 1 front end is provided with air inlet cavity 2 and rear end is provided with mobile cavity 5, air inlet cavity 2 and mobile cavity 5 are communicated with, in air outlet adapter 11, being provided with give vent to anger cavity 12 and front end is connected with valve body 1 rear end, spool 4 is positioned at mobile cavity 5 with Returnning spring 3, wherein one end of Returnning spring 3 is pressed on valve body 1, the other end of Returnning spring 3 is pressed on the tail end of spool 4, spool 4 external diameter be greater than the internal diameter of the cavity 12 of giving vent to anger.Spool 4 can move back and forth in the mobile cavity of valve body 15, controls the connected sum isolation of air inlet cavity 2 and the cavity 12 of giving vent to anger.
During the present invention uses, cryogenic insulated cylinder safety valve solar term seat suction port end is arranged on cryogenic insulated cylinder, air outlet end is installed cryogenic insulated cylinder safety valve, in the time that safety valve 14 screws in solar term seat and gives vent to anger cavity 12 internal thread, safety valve 14 heads on spool 4 and moves to gas cylinder direction mobile cavity 5 is interior, spool 4 is separated with air outlet adapter 11, and air inlet cavity 2, mobile cavity 5 and the cavity 12 of giving vent to anger form venting channels.When normal use, the pressure of cryogenic insulated cylinder internal gas acts directly on safety valve 14 by venting channels; In the time that safety valve 14 periodic checks need to be changed, without by the gas emptying in cryogenic insulated cylinder, directly pull down safety valve 14, now spool 4 is because the effect of Returnning spring 3 gentle pressure of the inside of a bottle resets, closely cooperate and play seal action with air outlet adapter 11, block the gas in cryogenic insulated cylinder.Load onto after the qualified safety valve of new verification 14, safety valve 14 by spool 4 backward in the interior passing of mobile cavity 5, spool 4 is separated with air outlet adapter 11, and venting channels is opened, and the pressure of cryogenic insulated cylinder internal gas acts directly on safety valve 14 by venting channels.
Concrete, shown in Fig. 1 and Fig. 2, valve body 1 is stepped, and front end external diameter is less than rear end external diameter, and front end is insertion tube shape, and front end outer wall is provided with the outside thread being connected with cryogenic insulated cylinder, can precession gas cylinder in screw threads for fastening; Valve body 1 hollow, there are two cavitys inside, i.e. air inlet cavity 2 and mobile cavity 5, and two cavitys are connected, and air inlet cavity 2 is communicated with gas cylinder cavity; The inwall of valve body 1 rear end mobile cavity 5 arranges internal thread.Air outlet adapter 11 front ends are insertion tube shape, and outer wall arranges outside thread, in the mobile cavity 5 of air outlet adapter 11 front end precession valve bodies 1, are threaded connection fasteningly with valve body 1, and seal with gasket seal 10 in joint; Air outlet adapter 11 hollows form the cavity 12 of giving vent to anger, and the cavity 12 rear end inwalls of giving vent to anger are provided with screw thread, can with cryogenic insulated cylinder safety valve 14 screw threads for fastening, and in air outlet adapter 11 and cryogenic insulated cylinder safety valve 14 joints, seal ring 13 is set.
Spool 4 is positioned at mobile cavity 5 with Returnning spring 3, wherein one end of Returnning spring 3 is fixed on valve body 1 inwall, the other end of Returnning spring 3 is fixed on the tail end of spool 4, the external diameter of spool 4 communicates with the internal diameter of mobile cavity 5, can in the mobile cavity of valve body 15, move back and forth, spool 4 front ends are pressed on air outlet adapter 11 walls, and spool 4 external diameters are greater than the internal diameter of the cavity 12 of giving vent to anger, and spool 4 is provided with the spool venting channels 6 paralleling to the axis.In the time of normal use, spool venting channels 6 is communicated with mobile cavity 5 and the cavity 12 of giving vent to anger; In the time of maintenance safety valve 14, because the external diameter of spool 4 is greater than the internal diameter of the cavity 12 of giving vent to anger, one end 4 of spool venting channels 6 is close on the wall of air outlet adapter 11, by separated to mobile cavity 5 and the cavity 12 of giving vent to anger.
Spool 4 tail ends are provided with the plug 9 of grafting tubular, and plug 9 external diameters are identical with cavity 12 internal diameters of giving vent to anger, and plug 9 hollows and wall are provided with more than one spool exhaust port 9.1, and when assembling, described plug 9 is connected to giving vent to anger in cavity 12 of air outlet adapter 11.In the time of normal use, spool venting channels 6 and spool exhaust port 9.1 are communicated with mobile cavity 5 and the cavity 12 of giving vent to anger; In the time of maintenance safety valve 14, because the external diameter of spool 4 is greater than the internal diameter of the cavity 12 of giving vent to anger, one end of spool venting channels 6 is close on the wall of air outlet adapter 11, by separated to mobile cavity 5 and the cavity 12 of giving vent to anger.
Adopt the cryogenic insulated cylinder safety valve solar term seat of the above preferred embodiment of the present invention of describing by reference to the accompanying drawings, realized the function that gas cylinder separates with safety valve connected sum, be not limited to aforesaid way but realize technique effect of the present invention.Basic ideas of the present invention are to provide a kind of solar term seat, this solar term seat inside is provided with cavity, and this cavity is the connecting passage of gas cylinder cavity and safety valve, in solar term seat cavity, be provided with spool and Flexible Reset parts, spool can to-and-fro motion in solar term seat cavity under the effect of external force, control gas cylinder gas circuit is communicated with and isolation with safety valve, and realization need not discharge the gas in gas cylinder and then can change the function of safety valve.This implementation has a lot; for example, solar term seat does not comprise plug 9, but comprises the structure of similar valve opening function but safety valve 14 insertions are given vent to anger on the position of cavity 12; as long as the structure that can make mobile cavity 5 and the cavity 12 of giving vent to anger be connected, all should fall within the scope of protection of the present invention.
Claims (5)
1. a cryogenic insulated cylinder safety valve solar term seat, it is characterized in that: comprise valve body (1), Returnning spring (3), spool (4), air outlet adapter (11), valve body (1) hollow front end is provided with air inlet cavity (2) and rear end is provided with mobile cavity (5), in air outlet adapter (11), being provided with the cavity of giving vent to anger (12) and front end is connected with valve body (1) rear end, spool (4) is positioned at mobile cavity (5) with Returnning spring (3), wherein one end of Returnning spring (3) is pressed on valve body (1), the other end of Returnning spring (3) is pressed on the tail end of spool (4), spool (4) front end is pressed on air outlet adapter (11) wall, spool (4) external diameter is greater than the internal diameter of the cavity of giving vent to anger (12), spool (4) is provided with spool venting channels (6), spool venting channels (6) one end communicates with mobile cavity, the other end and air outlet adapter (11) wall is close to.
2. a kind of cryogenic insulated cylinder safety valve solar term seat according to claim 1, it is characterized in that: valve body (1) rear end inwall arranges internal thread, air outlet adapter (11) front end outer wall arranges outside thread, valve body (1) is threaded with air outlet adapter (11), and seals at gasket seal for joint (10).
3. a kind of cryogenic insulated cylinder safety valve solar term seat according to claim 1 and 2, it is characterized in that: spool (4) tail end is provided with the plug (9) of grafting tubular, plug (9) hollow and wall are provided with more than one spool exhaust port, when assembling, described plug (9) is connected in the cavity of giving vent to anger (12) of air outlet adapter (11).
4. a kind of cryogenic insulated cylinder safety valve solar term seat according to claim 3, it is characterized in that: air outlet adapter (11) front end is provided with protruding valve seat (8), spool (4) tail end is provided with flap (7), and flap (7) is pressed on valve seat (8) under the effect of Returnning spring (3).
5. a kind of cryogenic insulated cylinder safety valve solar term seat according to claim 3, it is characterized in that: valve body (1) front end outer wall is provided with the outside thread being connected with cryogenic insulated cylinder, air outlet adapter (11) inwall is provided with the internal thread being connected with cryogenic insulated cylinder safety valve (14), in air outlet adapter (11) and cryogenic insulated cylinder safety valve (14) joint, seal ring (13) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044482.6U CN203686340U (en) | 2014-01-24 | 2014-01-24 | Throttling base for safety valve of low-temperature heat insulation gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044482.6U CN203686340U (en) | 2014-01-24 | 2014-01-24 | Throttling base for safety valve of low-temperature heat insulation gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686340U true CN203686340U (en) | 2014-07-02 |
Family
ID=51008239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044482.6U Expired - Lifetime CN203686340U (en) | 2014-01-24 | 2014-01-24 | Throttling base for safety valve of low-temperature heat insulation gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686340U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759068A (en) * | 2014-01-24 | 2014-04-30 | 丹阳市飞轮气体阀门有限公司 | Gas saving base of safety valve of low temperature heat insulation gas cylinder |
| CN105626105A (en) * | 2016-01-25 | 2016-06-01 | 巨隆集团芜湖兴隆液压有限公司 | Safety valve |
-
2014
- 2014-01-24 CN CN201420044482.6U patent/CN203686340U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759068A (en) * | 2014-01-24 | 2014-04-30 | 丹阳市飞轮气体阀门有限公司 | Gas saving base of safety valve of low temperature heat insulation gas cylinder |
| CN105626105A (en) * | 2016-01-25 | 2016-06-01 | 巨隆集团芜湖兴隆液压有限公司 | Safety valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
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| CX01 | Expiry of patent term |