CN104913090A - Low-pressure emptying type blasting needle valve - Google Patents
Low-pressure emptying type blasting needle valve Download PDFInfo
- Publication number
- CN104913090A CN104913090A CN201510268769.6A CN201510268769A CN104913090A CN 104913090 A CN104913090 A CN 104913090A CN 201510268769 A CN201510268769 A CN 201510268769A CN 104913090 A CN104913090 A CN 104913090A
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- CN
- China
- Prior art keywords
- valve body
- guide sleeve
- valve
- explosion
- needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a low-pressure emptying type blasting needle valve which comprises a valve body, a valve element, a blasting needle, a guide sleeve and a top plate. The valve element, the blasting needle, the guide sleeve and the top plate are arranged in the valve body. One end of the guide sleeve is connected to the valve body, and the other end of the guide sleeve is connected to the top plate. One end of the blasting needle is connected to the valve element, and the other end of the blasting needle is connected to the top plate. The guide sleeve penetrates through the valve element. The valve element can slide along the guide sleeve. Under the working conditions of the large pressure fluctuation and the high operation ratio, zero leakage and accurate pressure relief can be ensured, installing is easy and convenient, equipment and personnel can be effectively protected, and pollution to the environment from harmful media is reduced.
Description
Technical field
The present invention relates to pressure-relieving device field, particularly relate to a kind of low pressure emptying type explosion needle-valve.
Background technique
Existing low pressure, bigbore pressure-relieving device, be mainly rupture disk and emergency relief valve.
Stability and the pressure releasing precision of low pressure explosion sheet are poor, under the operating mode that pressure surge is larger, easily can cause the explosion in advance of rupture disk; In this external installation process, easily because flange bolt screwing force is inadequate, rupture disk is caused to take out limit, in advance unstability; And rupture disk temperature influence is comparatively large, in the industrial production because temperature range is comparatively large, superpressure scope is also comparatively large, and this just causes rupture disk that explosion in advance not only can occur, and also delayed explosion likely occurs, thus there is great potential safety hazard.
Then there is the poor problem of sealing in emergency relief valve; in extreme cases; easily cause great security risk; valve is that sealing cannot ensure, when system pressure reaches 70% of valve setpoint pressure by gravity sealing; namely valve leaks; thus when being valuable medium in protected system, or medium be poisonous and harmful or corrosivity time, valve seal just becomes emergency discharge device and bites matter of utmost importance to be solved.
Summary of the invention
The object of the invention is: in order to solve the problem, provide a kind of low pressure emptying type explosion needle-valve, be subject to temperature minimum, the stability of impact and precision is high, good airproof performance, and can effectively proterctive equipment and personnel, minimizing hazardous medium is to the pollution of environment.
To achieve these goals, technological scheme of the present invention is:
A kind of low pressure emptying type explosion needle-valve, comprises valve body, the spool be arranged in described valve body, explosion pin, guide pin bushing and pressing plate; Described guide pin bushing one end is connected to described valve body, and the other end is connected to described pressing plate; Described explosion pin one end is connected to described spool, and the other end is connected to described pressing plate; Described guide pin bushing is arranged in described spool, and described spool can slide along described guide pin bushing.
Further, described explosion pin is connected by plug with described valve body joint.
Further, screw fastening is passed through in described guide pin bushing and pressing plate joint.
Further, also comprise safety cover, be arranged on the top of described valve body, be connected with described valve body.
Further, described safety cover and valve body pass through screw fastening.
Further, O RunddichtringO is also provided with between described valve body and spool.
The present invention has the following advantages relative to prior art tool:
The present invention is owing to being provided with explosion pin, its STRESS VARIATION is always in elastic limits, and its Deformation Mechanism follows Euler's formula, before reaching setting bursting pressure, explosion pin can not premature failure, and due to the not direct contact medium of explosion pin, be directly correlated with ambient atmosphere medium, so it is minimum to be subject to temperature impact, and it is with low cost, secondary removes and installs simple and fast, after explosion needle-valve is opened, only need replace the explosion pin of inefficacy.The present invention carrys out the cracking pressure of controlled blasting needle-valve by the interaction force of explosion pin and spool, adopts O type circle to ensure sealing, guarantee zero leakage under system does not reach setting pressure between spool and valve body.
Accompanying drawing explanation
Fig. 1 is low pressure emptying type explosion needle-valve of the present invention structural representation when normally closing.
Structural representation when Fig. 2 is low pressure emptying type explosion needle-valve superpressure of the present invention unlatching.
Embodiment
Embodiments of the invention are further illustrated below in conjunction with accompanying drawing.
In order to make the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with functional diagram and flow chart, the present invention is described in further details.Following exemplary embodiment and illustrating for explaining the present invention, but not as a limitation of the invention.
Shown in Figure 1, a kind of low pressure emptying type explosion needle-valve, comprises valve body 8, spool 7, explosion pin 3, guide pin bushing 6 and the pressing plate 4 be arranged in described valve body 8; Described guide pin bushing 6 one end is connected to described valve body 8, and the other end is connected to described pressing plate 4; Described explosion pin 3 one end is connected to described spool 7, and the other end is connected to described pressing plate 4; Described guide pin bushing 6 is arranged in described spool 7, and described spool 7 can slide along described guide pin bushing 6.
Preferably, described explosion pin 3 is connected by plug 2 with described valve body 8 joint.
Preferably, described guide pin bushing 6 passes through screw fastening with pressing plate 4 joint.
Preferably, also comprise safety cover 1, be arranged on the top of described valve body 8, be connected with described valve body 8, guarantee the normal use under severe weather conditions and working life.
Preferably, described safety cover 1 passes through screw fastening with valve body 8.
Preferably, between described valve body 8 and spool 7, be also provided with O RunddichtringO 9, ensure valve zero leakage.
Be connected with large-scale storage tank or pipeline by valve body (8), when protected system is normally run, explosion pin 3 is in normal extension state, and valve body (8) and spool (7) are in fit-state, i.e. valve closing.
Shown in Figure 2, when protected system pressure increases to explosion needle-valve pressure set-point, promote spool 7 and move upward along guide pin bushing 6; pressure is applied on explosion pin 3 by spool 7, and explosion pin 3 instantaneously deformation occurs, and spool 7 continues to move upward; valve opening, thus delivery system pressure.
Act on and explosion pin makes its sex change
the diameter of explosion pin and length are all determine according to the slenderness ratio of the best of Euler's formula, and its advantage is that pressure precision is high, good stability, and fatigue resistance is high, and operation is than reaching as high as 98%, and explosion franchise can reach ± 2%; Can at the pressure operation of closely set point; Unified release in several milliseconds, after primary blasting, only need change explosion pin; Simple installation, explosion pin is replaced, and a people only needs one minute; Loss is low, lower maintenance expenses, has saved manpower and financial resources greatly.
To sum up, the present invention can operate than under operating mode with high comparatively greatly in pressure surge, guarantees accurate relieving pressure, and simple installation, can effectively protect low-voltage equipment and personnel, reduce hazardous medium to the pollution of environment.
Claims (6)
1. a low pressure emptying type explosion needle-valve, is characterized in that: comprise valve body (8), the spool (7) be arranged in described valve body (8), explosion pin (3), guide sleeve (6) and top board (4); Described guide sleeve (6) one end is connected to described valve body (8), and the other end is connected to described top board (4); Described explosion pin (3) one end is connected to described spool (7), and the other end is connected to described top board (4); Described guide sleeve (6) is arranged in described spool (7), and described spool (7) can slide along described guide sleeve (6).
2. a kind of low pressure emptying type explosion needle-valve according to claim 1, is characterized in that: described explosion pin (3) is connected by plug (2) with described valve body (8) joint.
3. a kind of low pressure emptying type explosion needle-valve according to claim 1, is characterized in that: screw fastening is passed through in described guide sleeve (6) and top board (4) joint.
4. a kind of low pressure emptying type explosion needle-valve according to claim 1, is characterized in that: also comprise safety cover (1), be arranged on the top of described valve body (8), is connected with described valve body (8).
5. a kind of low pressure emptying type explosion needle-valve according to claim 4, is characterized in that: described safety cover (1) and valve body (8) pass through screw fastening.
6. a kind of low pressure emptying type explosion needle-valve according to claim 1, is characterized in that: be also provided with O RunddichtringO (9) between described valve body (8) and spool (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268769.6A CN104913090A (en) | 2015-05-24 | 2015-05-24 | Low-pressure emptying type blasting needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268769.6A CN104913090A (en) | 2015-05-24 | 2015-05-24 | Low-pressure emptying type blasting needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104913090A true CN104913090A (en) | 2015-09-16 |
Family
ID=54082406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510268769.6A Pending CN104913090A (en) | 2015-05-24 | 2015-05-24 | Low-pressure emptying type blasting needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104913090A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5226442A (en) * | 1992-08-13 | 1993-07-13 | Taylor Julian S | Vacuum/pressure release valve |
| CN202812338U (en) * | 2012-02-20 | 2013-03-20 | 刘海亮 | Pressure bar instability trigger type decompression valve |
| CN103486305A (en) * | 2012-06-08 | 2014-01-01 | 刘海亮 | Compression rod triggered type high-pressure and low-pressure emergency shutoff valve |
| CN203948729U (en) * | 2014-07-03 | 2014-11-19 | 徐州阿卡控制阀门有限公司 | Explosion pin safety valve |
| CN104266169A (en) * | 2014-09-03 | 2015-01-07 | 北京富士特锅炉有限公司 | Total pressure switching safety valve and total pressure boiler using same |
| CN204300442U (en) * | 2014-11-05 | 2015-04-29 | 北京航天动力研究所 | A kind of pressure lever type safe pressure relief device |
-
2015
- 2015-05-24 CN CN201510268769.6A patent/CN104913090A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5226442A (en) * | 1992-08-13 | 1993-07-13 | Taylor Julian S | Vacuum/pressure release valve |
| CN202812338U (en) * | 2012-02-20 | 2013-03-20 | 刘海亮 | Pressure bar instability trigger type decompression valve |
| CN103486305A (en) * | 2012-06-08 | 2014-01-01 | 刘海亮 | Compression rod triggered type high-pressure and low-pressure emergency shutoff valve |
| CN203948729U (en) * | 2014-07-03 | 2014-11-19 | 徐州阿卡控制阀门有限公司 | Explosion pin safety valve |
| CN104266169A (en) * | 2014-09-03 | 2015-01-07 | 北京富士特锅炉有限公司 | Total pressure switching safety valve and total pressure boiler using same |
| CN204300442U (en) * | 2014-11-05 | 2015-04-29 | 北京航天动力研究所 | A kind of pressure lever type safe pressure relief device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150916 |
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| WD01 | Invention patent application deemed withdrawn after publication |