CN208703213U - A kind of one-way ventilating explosion-proof valve and box body tightness detect jig - Google Patents
A kind of one-way ventilating explosion-proof valve and box body tightness detect jig Download PDFInfo
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- CN208703213U CN208703213U CN201821457449.0U CN201821457449U CN208703213U CN 208703213 U CN208703213 U CN 208703213U CN 201821457449 U CN201821457449 U CN 201821457449U CN 208703213 U CN208703213 U CN 208703213U
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Abstract
The utility model provides a kind of one-way ventilating explosion-proof valve, including valve body, spool and spring, valve body is equipped with ventilation mouth, spool includes piston and guide post, piston is fixedly connected with the guide columns, piston is pressed on ventilation mouth, guide post passes through valve body and connect with piston, piston outer end face is equipped with the threaded hole connecting with sealing propertytest jig, spring is threaded through on guide post, one end of spring is connect with valve body, the other end of spring is connect with guide post, the explosion-proof pressure of the utility model depends on the elastic force of spring, the design of one-way ventilating structure, it is fully sealed under normal condition, air containing steam will not enter cabinet, spool can be then opened when the intracorporal pressure of case reaches the spool cracking pressure of explosion-proof valve, make between spool and valve body that there are gaps, gas is discharged from ventilation mouth and gap, with extraordinary explosion-proof stability, it can lead to 100% full inspection explosion-proof performance is crossed, guarantees the quality of explosion-proof valve.
Description
Technical field
The utility model relates to explosion-proof valve technical field, espespecially a kind of one-way ventilating explosion-proof valve.
Background technique
Existing outdoor electric appliance control cabinet, battery pack etc. must have excellent leakproofness equipped with the cabinet of core component
Can, to prevent influence of the performance of its inner core component by water or dust, but after cabinet is fully sealed, generate at work
Heat makes the intracorporal air expansion of case, causes the intracorporal battery of case, bulk capacitor abnormal explosion occur and generates high temperature and pressure, meeting
Huge pressure is generated in cabinet, there are the risks of heavy explosion, it is therefore desirable to which a kind of explosion-proof valve prevents explosion or reduction
The damage that explosion generates.
Explosion-proof valve is bored at elevated pressures mainly using the explosion-proof diaphragm for installing metal or plastic material in valve body at present
Shape thimble punctures explosion-proof diaphragm, plays ventilative and explosion-proof effect to a certain extent, but structure is complicated, by metal explosion-proof piece or
Breathable film ruptures under pressure plays explosion-proof effect, and the accuracy rate of explosion is poor, stability is bad, and explosion-proof diaphragm one
Denier, which is punctured explosion-proof valve, to scrap, therefore can not carry out batch detection in the production process, and there are certain quality risks.In addition
Ventilated membrane be it is two-way ventilative, gas can be discharged from inside to outside from cabinet, but also can internally air inlet, the humid air outside cabinet
Into cabinet, and work as explosion rear defence ventilated membrane, explosion-proof rupture of diaphragm, can not starvation travel further into cabinet, will lead to
Cabinet chain reaction causes dying fire re-ignition, explosion again in cabinet.
And the detection for seal case degree of protection, it is anti-in GB4208-2008 standard clear stipulaties IP67 or more
Protect the test method and requirement of grade: dust-proof test is tested using talcum powder in dustproof test box, it is desirable that in off-test cabinet
There cannot be dust deposit；Waterproof test requirement 1 meter of depth of water of immersion, the testing time at least 30 minutes.It is detected by this standard method, behaviour
Make complexity, the used time is more, and detection rear box is stained with water and dust, needs to clean, is dry, and detection post-processes trouble, is adapted only to
The requirement quickly detected in seal case batch production processing procedure is not achieved in sampling inspection.To produce processing procedure in batches in the industry
In be all made of inflation or vacuumize and the method detection box of pressure maintaining for a period of time whether gas leakage verifies whether cabinet seals
It is good to verify cabinet protection effect, it generally uses following methods: (1) boring a threaded hole on cabinet, connect gas-charging connection
It is detected, although the method inflation detection speed is fast, on cabinet need to open a hole more, increase cabinet difficult processing
Degree, and need to install a bolt again after inflation detection is qualified and carry out secondary plugging sealing, it can not prove that bolt is secondary close
Effect is sealed, it is bad that there are secondary seals, and the risk of degree of protection is not achieved.(2) it is filled in cabinet by the ventilated membrane of explosion-proof valve
Gas, but waterproof ventilated membrane Air permenbility is typically small, aeration speed is very slow, the low problem of detection efficiency, if with high-pressure aerated
Then existing keeps waterproof ventilated membrane damaged, leads to the risk of explosion-proof defective valve.
Utility model content
To solve the above problems, the utility model provides, a kind of explosion-proof stability is good, can carry out 100% detection, inflation speed
Degree is fast, will not enter humid air, explosion under normal condition into cabinet after automatically reset can starvation it is a kind of unidirectional saturating
Gas explosion-proof valve.
To achieve the above object, the utility model adopts the following technical scheme is: a kind of one-way ventilating explosion-proof valve, including
Valve body, spool and spring etc., the valve body are equipped with ventilation mouth, and the spool includes piston and guide post, the piston
It is pressed on ventilation mouth, the guide post passes through valve body and connect with piston, and the piston outer end face is equipped with and controls with sealing propertytest
Have the threaded hole of connection, the spring is threaded through on guide post, and one end of the spring is connect with valve body, the spring it is another
End is connect with guide post.
Preferably, the valve body is equipped with several dowels, is equipped with ventilation mouth, the company between adjacent dowel
It connects muscle and crosses and be equipped with pilot hole at center；It is slidably matched between the pilot hole and spool guide post, guarantees that spool is smooth and run work jointly
Dynamic prevention spool bias leads to Caton or poor sealing.
Preferably, a through-hole is equipped at least on a valve body dowel.
Preferably, the piston is equipped with the external screw thread or threaded hole that connect with guide post, and ipsilateral is equipped with a positioning at its
Column；The positioning column penetrates the through-hole on valve body dowel.
Preferably, it is set on valve body there are four explosion-proof valve installation threaded hole, the threaded hole and valve body are integrally formed.
Preferably, the one-way ventilating explosion-proof valve further includes the first sealing ring, and first sealing ring is located at valve body
In first groove of bottom.
Preferably, the one-way ventilating explosion-proof valve further includes the first sealing ring, further includes the second sealing ring, and described second is close
Seal is mounted in the second groove on valve body between piston and valve body.
Meanwhile in order to improve box body tightness detection speed and convenience, it is close that the utility model additionally provides a kind of cabinet
Envelope property detection jig, connect, including jig body, sealing ring, gas-tpe fitting with the one-way ventilating explosion-proof valve being mounted on cabinet,
The jig body inner surface is equipped with stud, and the gas-tpe fitting is located at the outer end face of jig body, and the jig body passes through
Stud connect to be set on explosion-proof valve with threaded hole, and the jig body is connect by gas-tpe fitting with charger.
Preferably, the sealing propertytest jig sealing ring is rubber o-ring or circular ring shape plain cushion, the internal diameter of the seal ring
Greater than the internal diameter of piston, it is bonded in jig body.
Preferably, sealing propertytest jig body is equipped with one and wears threaded hole company through gas-tpe fitting and pipe described in threaded hole
Connect the outer end face for being mounted on jig body.
The utility model has the beneficial effects that:
(1) explosion-proof pressure of the utility model depends on the elastic force of spring, when the intracorporal pressure of case reaches the anti-of explosion-proof valve
Detonation pressure power can then open spool, and Quick air-discharge selects the spring of different elastic force to can be designed different pressure, and spool is opened
Pressure precision height is opened, there is extraordinary explosion-proof stability；
(2) after explosion pressure release, when the intracorporal pressure of case is less than spool cracking pressure, spool, which can automatically reset, keeps sealing
State, therefore can guarantee the quality of explosion-proof valve by the explosion-proof performance of 100% detection explosion-proof valve in processing procedure；
(3) the utility model is designed using one-way ventilating structure, under normal operating conditions will not internally air inlet, outside cabinet
Humid air cannot be introduced into cabinet, and explosion pressure release back valve core automatically resets and keeps sealing state, and starvation is further
Into cabinet, the explosion-proof valve breathable film for fundamentally solving the prior art is two-way ventilative, and ventilated membrane rupture of diaphragm after explosion, nothing
Method is again sealed off, in Yi Yinqi cabinet dying fire again re-ignition, explosion the problem of.
(4) the utility model is equipped with and sealing propertytest jig connection screw thread hole, rotary seal detection on the outside of spool
Jig pull-up spool can inflate air to extraction, aeration aperture that no setting is required or by ventilative inflation, therefore can realize fast
Speed inflation.
(5) design of the utility model one-way ventilating explosion-proof valve is reasonable, structure is simple, has excellent performance, is easy to produce in batches, at
This is low.
(6) the utility model box body tightness detection jig structure is simple, and manufacturing cost is low, inflates or vacuumize detection speed
Degree is fast, and box body tightness detection is easy to operate, and detection speed is fast, and operating cost is low.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of explosion-proof valve.
Fig. 2 is the detonation configuration figure of explosion-proof valve.
Fig. 3 is the sectional view of explosion-proof valve.
Fig. 4 is the stereoscopic schematic diagram of sealing propertytest jig.
Fig. 5 is the diagrammatic cross-section for detecting jig body.
Description of symbols: 1. valve bodies；11. dowel；111. location hole；12. ventilation mouth；13. pilot hole；14. the
One groove；15. the second groove；16. installing threaded hole；2. spool；21. piston；211. threaded hole；212. connecting column；213. fixed
Position column；22. guide post；3. spring；4. the first sealing ring；5. the second sealing ring；6. jig body；61. threaded post；62. running through spiral shell
Pit；63. groove；7. gas-tpe fitting；8. sealing ring.
Specific embodiment
It please refers to shown in Fig. 1-3, the utility model is about a kind of one-way ventilating explosion-proof valve, including valve body 1, spool 2, bullet
Spring 3, the first sealing ring 4 and the second sealing ring 5.It is equipped with four dowels 11 in the valve body 1, four dowels 11
It crosses and is equipped with pilot hole 13 at center, wherein a dowel 11 is equipped with location hole 111, be equipped between adjacent dowel 11
Ventilation mouth 12.
The spool 2 includes piston 21 and guide post 22, and the inner face of the piston 21 is equipped with connecting column 212, the guide post
Connecting hole is equipped in 22, the guide post 22 passes through pilot hole 13, it by interference fit or is threadedly coupled with connecting column 212, from
And it is fixedly connected with piston 21.
The spring 3 is threaded through on guide post 22, and one end of the spring 3 is connect with dowel 11, the spring 3 it is another
End is connect with guide post 22.It is slidably matched between guide post 22 described in above scheme and pilot hole 13, guarantees the smooth folding of spool, in advance
Anti- spool bias leads to Caton or poor sealing.
The valve body is equipped with 4 installation threaded holes 16, and the installation threaded hole 16 is integrally formed with valve body 1, and
Annular first groove 14 is equipped on installation 16 outside valve body 1 of threaded hole, first sealing ring 4 is located at the first groove 14
Interior, one-way ventilating explosion-proof valve is installed on cabinet, can be effectively sealed with cabinet by the first sealing ring 4, use is above-mentioned
Scheme, and the first sealing ring 4 is hidden in inside ontology 1, preferably carries out water proof and dust proof, and prevents sealing ring aging, is used
Service life is long.
The second groove 15 is equipped in the valve body 1,15 ring of the second groove is located on the outside of ventilation mouth 12, and described second
Sealing ring 5 is located in the second groove, and the piston 21 is located in valve body 1, under normal condition, under the elastic force effect of spring 3,
Piston 21 compresses the second sealing ring 5 to be fully sealed using between spool 2 and valve body 1.Using the above scheme, the second groove
15 can effectively fix the second sealing ring 5, prevent it from moving or deviating from, and keep the second sealing ring 5 and valve core piston 21 good
Fitting, can be improved the leakproofness between valve body 1 and spool 2, preferably carries out water proof and dust proof.
The inner face of the piston 21 is equipped with positioning column 213, and positioning column 213 passes through the outer of piston 21 described in location hole 111
End face is equipped with the dedicated threaded hole 211 of detection box leakproofness.Above scheme, which is efficiently solved, installs detection jig 6 in rotation
When spool 2 rotate, the problem of can not being installed in place.
It please refers to shown in Fig. 4-5, the box body tightness detection jig includes jig body 6, gas-tpe fitting 7 and sealing ring
8, the 6 inner surface center of jig body is equipped with threaded post 61, and outer end face is equipped with one and runs through threaded hole 62, in addition medial surface outer circle
Place is equipped with groove 63, and the jig body 6 is screwed by threaded post 61 with threaded hole 211 thus explosion-proof on cabinet with being mounted on
Valve connection.
The tracheae quick coupling 7 is connected through a screw thread installation with threaded hole 62.
The sealing ring 8 is rubber o-ring or circular ring shape plain cushion, and the internal diameter of the seal ring is greater than the internal diameter of piston, bonding
In groove 63.
Above scheme, when the threaded post 61 in jig body 6 is screwed in threaded hole 211, jig body is connect with explosion-proof valve,
When continuing rotation, spool 2 can be lifted up, open spool 2, form gap between piston and the second sealing ring 15, together
When sealing ring 8 and 1 outer edge of valve body seal, it can be achieved that quickly into cabinet inflate or take out vital qi detection box leakproofness.
The explosion-proof pressure of one-way ventilating explosion-proof valve described in the utility model depends on the elastic force of spring 3, when the intracorporal pressure of case
When power reaches explosion-proof pressure, spool 2 can be jacked up, and spring 3 compresses, and there is between piston 21 and the second sealing ring 15 certain
Quickly pressure release is discharged from ventilation mouth 12 and gap in gap, gas, has extraordinary explosion-proof stability, and can examine by high-volume
The explosion-proof performance for surveying explosion-proof valve, guarantees the quality of explosion-proof valve, and pressure is less than spool unlatching pressure in exhaust pressure relief to cabinet
When power, spool 2 under the action of spring 3 can Rapid reset, piston 21 compress the second sealing ring 15 realize normal condition under it is complete
Hermetically sealed, humid air not can enter cabinet, can effectively prevent moisture condensation in cabinet, and can obstruct air into one after explosion
Stepping enters cabinet, prevents burning, slows down separate explosion again.It is tested by experiment, the explosion-proof pressure of explosion-proof valve is in 10-20kPa range
Interior explosion-proof effect is best, and the spring 3 of different elastic force can also be selected to customize the unidirectional of other explosion-proof pressures according to actual needs
Ventilative explosion-proof valve.
In detection box leakproofness, the threaded post 61 in jig body 6 is screwed in into threaded hole 211, continuing rotation can be with
Spool 2 is lifted up, spool 2 is opened, while sealing ring 8 and 1 outer edge of valve body seal, when inflating or evacuating detection,
Gas passes in and out cabinet by gap, ventilation mouth 12 between gas-tpe fitting 7, piston and the second sealing ring 15, realize fast aeration or
Pumping detection, without in addition setting aeration aperture, when detection is easy to operate, jig installation and removes quick, and detection speed is fast, efficiency
It is high.And jig structure is simple, and easy processing, cost is relatively low.
Embodiment of above is only that preferred embodiments of the present invention are described, not to the utility model
Range be defined, under the premise of not departing from the spirit of the design of the utility model, this field ordinary engineering and technical personnel to this
The various changes and improvements that the technical solution of utility model is made should all fall into the guarantor that claims of the utility model determine
It protects in range.
Claims (9)
1. a kind of one-way ventilating explosion-proof valve, including valve body, spool and spring, it is characterised in that: the valve body is equipped with
Ventilation mouth, the spool include piston and guide post, and the piston is pressed on ventilation mouth, and the guide post passes through valve body and piston
Connection, the piston outer end face are equipped with the threaded hole connecting with sealing propertytest jig, and the spring is threaded through on guide post, described
One end of spring is connect with valve body, and the other end of the spring is connect with guide post.
2. a kind of one-way ventilating explosion-proof valve according to claim 1, it is characterised in that: the valve body is equipped with several
Dowel, is equipped with ventilation mouth between adjacent dowel, and the dowel, which crosses, is equipped with pilot hole at center, the pilot hole with
Spool guide post is slidably matched.
3. any one of -2 a kind of one-way ventilating explosion-proof valve according to claim 1, it is characterised in that: at least in a dowel
It is equipped with a through-hole.
4. a kind of one-way ventilating explosion-proof valve according to claim 3, it is characterised in that: the piston is equipped with and connect with guide post
External screw thread or threaded hole, and ipsilateral be equipped with a positioning column at its；The positioning column penetrates the through-hole on dowel.
5. a kind of one-way ventilating explosion-proof valve according to claim 1, it is characterised in that: it further include the first sealing ring, it is described
First sealing ring is located in the first groove of the bottom of valve body.
6. a kind of one-way ventilating explosion-proof valve according to claim 1, it is characterised in that: it further include the second sealing ring, it is described
Second sealing ring is mounted in the second groove on valve body between piston and valve body.
7. a kind of box body tightness detection jig being connect with one-way ventilating explosion-proof valve described in claim 1, it is characterised in that:
Including jig body, sealing ring, gas-tpe fitting, the jig body inner surface is equipped with stud, and the gas-tpe fitting is located at jig
The outer end face of ontology, the jig body connect to be set on explosion-proof valve with threaded hole by stud, the jig body
It is connect by gas-tpe fitting with charger.
8. box body tightness according to claim 7 detects jig, it is characterised in that: the sealing ring is rubber o-ring
Or circular ring shape plain cushion, the internal diameter of the seal ring are greater than the internal diameter of piston, are bonded in jig body.
9. box body tightness according to claim 7 detects jig, it is characterised in that: jig body is equipped with one and runs through spiral shell
Pit, the gas-tpe fitting wear threaded hole with pipe and connect to be mounted on the outer end face of jig body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821457449.0U CN208703213U (en) | 2018-09-06 | 2018-09-06 | A kind of one-way ventilating explosion-proof valve and box body tightness detect jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821457449.0U CN208703213U (en) | 2018-09-06 | 2018-09-06 | A kind of one-way ventilating explosion-proof valve and box body tightness detect jig |
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| CN208703213U true CN208703213U (en) | 2019-04-05 |
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| CN201821457449.0U Active CN208703213U (en) | 2018-09-06 | 2018-09-06 | A kind of one-way ventilating explosion-proof valve and box body tightness detect jig |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081214A (en) * | 2019-05-05 | 2019-08-02 | 东莞蒲微防水透气膜材料有限公司 | A kind of spring control explosion-proof valve and its application |
| CN111089190A (en) * | 2020-01-03 | 2020-05-01 | 中车青岛四方车辆研究所有限公司 | Differential pressure valve and rail vehicle |
| CN114018511A (en) * | 2021-11-04 | 2022-02-08 | 中船澄西扬州船舶有限公司 | Cabin gas tightness detects frock |
-
2018
- 2018-09-06 CN CN201821457449.0U patent/CN208703213U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081214A (en) * | 2019-05-05 | 2019-08-02 | 东莞蒲微防水透气膜材料有限公司 | A kind of spring control explosion-proof valve and its application |
| CN111089190A (en) * | 2020-01-03 | 2020-05-01 | 中车青岛四方车辆研究所有限公司 | Differential pressure valve and rail vehicle |
| CN114018511A (en) * | 2021-11-04 | 2022-02-08 | 中船澄西扬州船舶有限公司 | Cabin gas tightness detects frock |
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