CN203823171U - Low-temperature safety valve - Google Patents
Low-temperature safety valve Download PDFInfo
- Publication number
- CN203823171U CN203823171U CN201420259111.XU CN201420259111U CN203823171U CN 203823171 U CN203823171 U CN 203823171U CN 201420259111 U CN201420259111 U CN 201420259111U CN 203823171 U CN203823171 U CN 203823171U
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- China
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- valve body
- sealing gasket
- flap
- hole
- low
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Abstract
The utility model discloses a low-temperature safety valve and relates to the field of safety devices. The low-temperature safety valve comprises a valve body, a sealing gasket, a valve clack, springs, an adjusting screw nut and a locking screw nut, wherein an adjusting screw nut axial through hole is formed in the adjusting screw nut; the locking screw nut is mounted on the upper side of the adjusting screw nut; a locking screw nut axial through hole is formed in the locking screw nut; the locking screw nut axial through hole is communicated with the adjusting screw nut axial through hole, so as to serve as a discharging passage; a valve clack medium flow passage is arranged on the valve clack; the valve clack medium flow passage comprises a radial through hole and a valve clack axial hole communicated with the radial through hole through the valve body medium flow passage; a circumferential anti-deformation groove is formed in the side surface of the sealing gasket; the sealing gasket is embedded below the valve clack and the edge of the sealing gasket is folded and clamped by the valve clack; a sealing sharp corner is arranged on the contact part of the sealing gasket and a conical surface. The low-temperature safety valve provided by the utility model is simple in integral structure, easy to process, reliable in sealing performance and can be repeatedly calibrated.
Description
Technical field
The utility model relates to a kind of safety installations, especially a kind of low-temperature safety valve.
Background technique
At present, along with industrial development, the consumption of all kinds of liquefied gas at low temp constantly increases, cryogenic insulated cylinder is stored as one, transport liquid oxygen, liquid nitrogen, the pressurized container of the liquefied gas at low temp such as LNG is widely used, in storage, in the process of transport, gas cylinder temperature raises and gas cylinder itself exists the factors such as day relative evaporation can cause pressure of the inside of a bottle to raise, the safety relief device such as rupture disk or safety valve generally can be installed on gas cylinder and ensure that gas cylinder safely uses, rupture disk is due to itself characteristic decision, once container superpressure rupture disk generation explosion, bleed outlet cannot be again closed after opening, medium can all be released and be caused waste, therefore, the use of safety valve is more extensive, current existing low-temperature safety valve structure complexity, processing difficulties, the yielding generation of low temperature lower seal is leaked, and existing safety valve structure is fixed by pin or other forms at the qualified rear controlling mechanism of debugging, adjustment again.
Summary of the invention
The utility model is the yielding and problem of adjustment again for existing low-temperature safety valve complex structure, processing difficulties, low temperature lower seal, and the technological means that a kind of low-temperature safety valve the utility model of research and design adopts is as follows:
A kind of low-temperature safety valve, comprise valve body, be arranged on the sealing gasket in valve body, flap, spring and adjusting nut, in described valve body, be provided with the valve body media runner that connects valve body, and fluid input side is provided with the sealing cone coordinating with sealing gasket, described spring fitting is between described flap and adjusting nut, described adjusting nut is provided with adjusting nut axial hole, also comprise locking nut, described locking nut is arranged on adjusting nut upside, described locking nut is provided with locking nut axial hole, described locking nut axial hole and adjusting nut axial hole are communicated with, as medium leakage path, described flap is provided with flap medium runner, and described flap medium runner comprises radial direction through hole and is communicated with the flap axial bore of described radial direction through hole and valve body media runner, the side of described sealing gasket is provided with circumferential anti-deforming groove, and described sealing gasket is embedded in described flap below, is received limit clamp by described flap, and described sealing gasket and described conical surface contacting point are provided with sealing wedge angle.
Further, described sealing gasket is made up of soluble poly tetrafluoroethylene (PFA).
Further, the sidewall of described valve body is provided with discharge orifice, enters the impurity in valve body for water of condensation or the valve outlet side of discharging in valve body.
Further, the conical surface angle [alpha] of described sealing cone is 30 °-40 °.
Further, described anti-deforming groove cross section is triangle, and bottom portion of groove angle beta is 120 °.
Compared with the prior art, simple, the easily processing of a kind of low-temperature safety valve overall structure described in the utility model, sealability is reliable, can repeat adjustment.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is sealing gasket schematic diagram of the present utility model.
In figure: 1, valve body, 2, sealing gasket, 3, flap, 4, spring, 5, adjusting nut, 6, locking nut, 11, valve body media runner, 12, locking nut axial hole, 13, adjusting nut axial hole, 14, flap medium runner, 15, discharge orifice, 16, sealing cone, 17, anti-deforming groove, 18, sealing wedge angle, α, sealing cone angle, β, anti-deforming groove angle.
Embodiment
As depicted in figs. 1 and 2, a kind of low-temperature safety valve, comprise valve body 1, be arranged on the sealing gasket 2 in valve body 1, flap 3, spring 4 and adjusting nut 5, in described valve body 1, be provided with the valve body media runner 11 that connects valve body 1, and fluid input side is provided with the sealing cone 16 coordinating with sealing gasket 2, described spring 4 is arranged between described flap 3 and adjusting nut 5, described adjusting nut 5 is provided with adjusting nut axial hole 13, the utility model also comprises locking nut 6, described locking nut 6 is arranged on adjusting nut 5 upsides, described locking nut 6 is provided with locking nut axial hole 12, described locking nut axial hole 12 and adjusting nut axial hole 13 are communicated with, as medium leakage path, described flap 3 is provided with flap medium runner 14, and described flap medium runner 14 comprises radial direction through hole and is communicated with the flap axial bore of described radial direction through hole and valve body media runner, the side of described sealing gasket 2 is provided with circumferential anti-deforming groove 17, and described sealing gasket 2 is embedded in described flap 3 belows, is received limit clamp by described flap 3, and described sealing gasket 2 and described sealing cone 16 contacting points are provided with sealing wedge angle 18.
Described sealing gasket 2 is made up of soluble poly tetrafluoroethylene (PFA).
The sidewall of described valve body 3 is provided with discharge orifice, enters the impurity in valve body 1 for discharging water of condensation in valve body 1 or the outlet side of valve body 1.
The conical surface angle [alpha] of described sealing cone 16 is 30 °-40 °.
Described anti-deforming groove 17 cross sections are triangle, and bottom portion of groove angle beta is 120 °.
The utility model is applicable to all kinds of cryogenic insulated cylinders and other low-temperature (low temperature) vessels or pipeline, ensures pressurized container and pressure piping Security.Low-temperature safety valve, after adjustment is qualified, is locked adjusting nut 5 by locking nut 6, prevents that adjusting nut 5 is loosening, affects opening pressure of safety valve and Reseating pressure of a safety valve.While occurring that in transport, installation, using process unexpected factor causes opening pressure of safety valve or Reseating pressure of a safety valve to occur deviation, releasable lock jack panel 6, regulates adjusting nut 5 to carry out adjustment again to safety valve, after pressure is qualified, again locking, realizes safety valve and can repeat the object of adjustment.Safety valve is in the time of sealing state, the sealing wedge angle 18 of sealing gasket 2 coordinates formation sealing with sealing conical surface of valve body 16, sealability is reliable, on sealing gasket 2, there is anti-deforming groove 17, in the time that flap 3 is received limit clamping sealing gasket 2 and metal flap 3 produces micro-deformation at low temperatures, amount of deformation only can affect more than 17 part of sealing gasket 2 anti-deforming grooves, and can not cause anti-deforming groove 17 deform with lower area and affect sealability.In the time that protected container or internal pipe pressure reach opening pressure of safety valve; internal pressure promotes flap and rises; open leakage path; the superpressure of releasing medium; the discharge orifice 15 of valve body 3 sides is for being emitted on after safety valve discharged at lower temperature, the ponding that condenses of valve body 1 interior appearance, or enter the impurity such as liquid, dust in valve body 1 by the outlet side of valve body 1; anti-sealing or other impurity accumulate in valve body 1, affect media discharge or safety valve sealability.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; be equal to replacement or changed according to the technical solution of the utility model and inventive concept thereof, within all should being encompassed in protection domain of the present utility model.
Claims (5)
1. a low-temperature safety valve, comprise valve body, be arranged on the sealing gasket in valve body, flap, spring and adjusting nut, in described valve body, be provided with the valve body media runner that connects valve body, and fluid input side is provided with the sealing cone coordinating with sealing gasket, described spring fitting is between described flap and adjusting nut, described adjusting nut is provided with adjusting nut axial hole, it is characterized in that: also comprise locking nut, described locking nut is arranged on adjusting nut upside, described locking nut is provided with locking nut axial hole, described locking nut axial hole and adjusting nut axial hole are communicated with, as medium leakage path, described flap is provided with flap medium runner, and described flap medium runner comprises the flap axial bore of radial direction through hole and the described radial direction through hole of connection and valve body media runner, and described flap axial bore is towards valve outlet side, the side of described sealing gasket is provided with circumferential anti-deforming groove, and described sealing gasket is embedded in described flap below, is received limit clamp by described flap, and described sealing gasket and described conical surface contacting point are provided with sealing wedge angle.
2. low-temperature safety valve according to claim 1, is characterized in that: described sealing gasket is made up of soluble poly tetrafluoroethylene.
3. low-temperature safety valve according to claim 1, is characterized in that: the sidewall of described valve body is provided with discharge orifice, enters the impurity in valve body for water of condensation or the valve outlet side of discharging in valve body.
4. low-temperature safety valve according to claim 1, is characterized in that: the conical surface angle [alpha] of described sealing cone is 30 °-40 °.
5. low-temperature safety valve according to claim 1, is characterized in that: the cross section of described anti-deforming groove is triangle, and its bottom angle beta is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259111.XU CN203823171U (en) | 2014-05-19 | 2014-05-19 | Low-temperature safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259111.XU CN203823171U (en) | 2014-05-19 | 2014-05-19 | Low-temperature safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823171U true CN203823171U (en) | 2014-09-10 |
Family
ID=51478675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420259111.XU Expired - Fee Related CN203823171U (en) | 2014-05-19 | 2014-05-19 | Low-temperature safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203823171U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455599A (en) * | 2014-11-24 | 2015-03-25 | 西北工业大学 | Safety valve with tubular column structure |
| CN105587327A (en) * | 2016-01-25 | 2016-05-18 | 巨隆集团芜湖兴隆液压有限公司 | Valve core assembly of safety valve |
| CN105626119A (en) * | 2016-01-25 | 2016-06-01 | 巨隆集团芜湖兴隆液压有限公司 | Switching mechanism of overflow safety valve |
| CN105626118A (en) * | 2016-01-25 | 2016-06-01 | 巨隆集团芜湖兴隆液压有限公司 | Valve core assembly of mass-flow overflow safety valve |
| CN105715285A (en) * | 2016-01-25 | 2016-06-29 | 巨隆集团芜湖兴隆液压有限公司 | Valve element assembly of overflow safety valve |
| CN109812607A (en) * | 2019-03-11 | 2019-05-28 | 珠海格力电器股份有限公司 | Valve element assembly, safety valve, air conditioner and pressure equipment |
| CN110762263A (en) * | 2018-07-25 | 2020-02-07 | 广东威灵汽车部件有限公司 | Decompression valve and compressor |
| WO2023024033A1 (en) * | 2021-08-26 | 2023-03-02 | Engineered Controls International, Llc | Pressure relief valves for liquid hydrogen tanks |
-
2014
- 2014-05-19 CN CN201420259111.XU patent/CN203823171U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455599A (en) * | 2014-11-24 | 2015-03-25 | 西北工业大学 | Safety valve with tubular column structure |
| CN104455599B (en) * | 2014-11-24 | 2016-08-24 | 西北工业大学 | A kind of tubular column structure easing valve |
| CN105587327A (en) * | 2016-01-25 | 2016-05-18 | 巨隆集团芜湖兴隆液压有限公司 | Valve core assembly of safety valve |
| CN105626119A (en) * | 2016-01-25 | 2016-06-01 | 巨隆集团芜湖兴隆液压有限公司 | Switching mechanism of overflow safety valve |
| CN105626118A (en) * | 2016-01-25 | 2016-06-01 | 巨隆集团芜湖兴隆液压有限公司 | Valve core assembly of mass-flow overflow safety valve |
| CN105715285A (en) * | 2016-01-25 | 2016-06-29 | 巨隆集团芜湖兴隆液压有限公司 | Valve element assembly of overflow safety valve |
| CN110762263A (en) * | 2018-07-25 | 2020-02-07 | 广东威灵汽车部件有限公司 | Decompression valve and compressor |
| CN110762263B (en) * | 2018-07-25 | 2023-10-03 | 广东威灵汽车部件有限公司 | Pressure relief valve and compressor |
| CN109812607A (en) * | 2019-03-11 | 2019-05-28 | 珠海格力电器股份有限公司 | Valve element assembly, safety valve, air conditioner and pressure equipment |
| CN109812607B (en) * | 2019-03-11 | 2020-06-05 | 珠海格力电器股份有限公司 | Valve element assembly, safety valve, air conditioner and pressure equipment |
| WO2023024033A1 (en) * | 2021-08-26 | 2023-03-02 | Engineered Controls International, Llc | Pressure relief valves for liquid hydrogen tanks |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20150519 |
|
| EXPY | Termination of patent right or utility model |