CN105299305A - Emergency cut-off valve for fuel gas equipment - Google Patents
Emergency cut-off valve for fuel gas equipment Download PDFInfo
- Publication number
- CN105299305A CN105299305A CN201510721862.8A CN201510721862A CN105299305A CN 105299305 A CN105299305 A CN 105299305A CN 201510721862 A CN201510721862 A CN 201510721862A CN 105299305 A CN105299305 A CN 105299305A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- gas
- pipeline
- rod
- 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.)
- Pending
Links
Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention belongs to the technical field of fuel gas equipment valves and discloses an emergency cut-off valve for fuel gas equipment. The emergency cut-off valve is arranged in a pipeline of the fuel gas equipment. The emergency cut-off valve comprises a valve seat, a valve rod and a valve body. The valve seat is located in the pipeline. The valve body is fixed to the pipeline. The valve rod penetrates through the valve body. The lower end of the valve rod is provided with a valve core matched with the valve seat in a sealing mode. The upper end of the valve rod extends out of the valve body. The emergency cut-off valve is characterized in that the emergency cut-off valve further comprises a gear and a vertical gear rack meshing with the gear, the gear is rotationally matched with the valve rod, and the vertical gear rack is fixedly connected with an electric push rod which can push the vertical gear rack to leave the meshing state. According to the emergency cut-off valve, no manual control of operating personnel is needed compared with a traditional emergency cut-off valve controlled by human power, and the operating personnel can complete the whole cut-off process in a control center, so that the safety of the operating personnel is ensured.
Description
Technical field
The invention belongs to gas-fired equipment valve technology field.
Background technique
A kind of safety installations be usually arranged on gas-fired equipment pipeline during Emergeny Cutoff Valves.When pipeline and annex thereof break or misoperation time, in order to Accident prevention spreads expansion, need emergency cut-off Emergeny Cutoff Valves immediately, to cut off source of the gas rapidly, stop the continuation development of accident, therefore, it is very important that gas-fired equipment pipeline is installed Emergeny Cutoff Valves.
Existing gas-fired equipment Emergeny Cutoff Valves includes valve gap, valve seat and valve body, superposition assembling is in aggregates successively from top to bottom for described valve gap, valve seat and valve body, a valve shaft is had to be interspersed in this valve body, a little cam is connected with bottom described valve shaft, and this little cam and the short rod be arranged on valve outer wall are hinged, described valve outer wall is provided with a guide pipe, this guide pipe one end is provided with a rod head, this rod head is connected with short rod by low melting alloy, the described guide pipe the other end is connected with a spring, and this spring the other end is connected with short rod.
The shortcoming of such scheme is: during work, needing operator to pull rod head makes Emergeny Cutoff Valves block combustion gas, but actual run into gas leakage time, operator are in security consideration can not near Emergeny Cutoff Valves, at this time just need telecontrol that Emergeny Cutoff Valves cuts out, and manpower cannot pull more existing large-scale Emergeny Cutoff Valvess.
Summary of the invention
The invention is intended to provide a kind of safe and reliable gas-fired equipment Emergeny Cutoff Valves.
Gas-fired equipment Emergeny Cutoff Valves in this programme, be arranged in the pipeline of gas-fired equipment, comprise valve seat, valve rod and valve body, valve seat is with in pipeline, and valve body is fixed on pipeline, valve rod runs through valve body, the lower end of valve rod is with the spool coordinated with valve base sealing, and valve body is stretched out in the upper end of valve rod, also comprises the gear be rotatably assorted with valve rod, and with the vertical tooth bar of this gears meshing, this vertical tooth bar and can promote its electric push rod leaving engagement and be fixedly connected with.
Beneficial effect: under normal circumstances, wheel and rack engages each other, the axis of rotation of gear, makes whole valve rod to move or moves down, when on move time, holddown spring is compressed, and spool is lifted off a seat, and pipeline is unimpeded; When in case of emergency, controlling electric push rod makes gear rack depart from engagement, spool deadweight and holddown spring elastic force under move down fast (speed that the speed now moved down moves down than gear driven is faster), spool contacts with valve seat, realizes the pipeline of emergency cut-off gas-fired equipment.Compare traditional Emergeny Cutoff Valves controlled by manpower, this programme is without the need to operator's Non-follow control, and the operator in the controlling heart can complete whole cutting-off process, ensure that the safety of operator.
Further, described spool is formed the mounting platform of evagination, be furnished with the holddown spring be set on valve rod between this mounting platform and valve body, Compress Spring can superpose with gravity and spool is moved down fast, improves cut-off velocity.
Further, the lower end of described tooth bar is provided with roller, and this roller is arranged in the fixing chute in a position, and tooth bar is moved in chute, and quick disengaging is engaged with gear.
Further, in described valve body, be provided with the tetrafluoro filling block with valve rod close contact, ensure that in pipeline, combustion gas can not be overflowed from the gap between valve rod and valve body.
Further, holddown spring one end of described holddown spring is welded with spool, the bottom welding of the other end and valve body, connects more firm.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention gas-fired equipment Emergeny Cutoff Valves.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference character in Figure of description comprises: pipeline 1, valve seat 2, valve body 3, valve rod 4, spool 41, tetrafluoro filling block 5, holddown spring 6, gear 7, tooth bar 8, roller 9, chute 10, electric push rod 11.
Embodiment's gas-fired equipment Emergeny Cutoff Valves is substantially as shown in Figure 1: gas-fired equipment Emergeny Cutoff Valves, be arranged in the pipeline 1 of gas-fired equipment, comprise the valve seat 2 be arranged in pipeline 1 and the valve body 3 being bolted on pipeline 1 outside, installation cavity is left in valve body 3 inside.
Valve rod 4 runs through the installation cavity of valve body 3, is filled with the tetrafluoro filling block 5 with valve rod 4 close contact in this installation cavity, and lower end and spool 41 integrally casting of valve rod 4 are shaping, this spool 41 move down to seal with valve seat 2 contact after can seal whole pipeline 1.Spool 41 is formed the mounting platform of evagination, be furnished with holddown spring 6 between this mounting platform and valve body 3, this holddown spring 6 one end is welded with spool 41, the bottom welding of the other end and valve body 3.
Valve body 3 is stretched out in the upper end of valve rod 4, and valve rod 4 upper end has through hole, and this through hole coordinates with the axis of rotation of gear 7.The flank of tooth of this gear 7 and a tooth bar 8 vertically arranged engages each other, and the lower end of the bolt of this tooth bar 8 is connected with roller 9, and this roller 9 is arranged in chute 10, and this chute 10 position is fixed.Being bolted with the output shaft of electric push rod 11 of this tooth bar 8, the outbound course of this electric push rod 11 output shaft and Fig. 1 place plane orthogonal, electric push rod 11 is connected with central processing unit (CPU).
The working principle of the present embodiment: under normal circumstances, gear 7 and tooth bar 8 engage each other, and the rotating shaft of gear 7 rotates clockwise, and makes whole valve rod 4 moves, and holddown spring 6 is compressed, and spool 41 lifts off a seat 2, and pipeline 1 is unimpeded; When in case of emergency, after central processing unit (CPU) receives signal (such as coal gas detection head detects gas leakage signal), control electric push rod 11 to move along the direction perpendicular to Fig. 1 plane, gear 7 tooth bar 8 is made to depart from engagement, spool 41 contacts with valve seat 2 under deadweight with the double action of Compress Spring, realizes the pipeline 1 of emergency cut-off gas-fired equipment.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (5)
1. gas-fired equipment Emergeny Cutoff Valves, be arranged in the pipeline of gas-fired equipment, comprise valve seat, valve rod and valve body, valve seat is positioned at pipeline, valve body is fixed on pipeline, valve rod runs through valve body, and the lower end of valve rod is with the spool coordinated with valve base sealing, and valve body is stretched out in the upper end of valve rod, it is characterized in that, also comprise the gear be rotatably assorted with valve rod, and with the vertical tooth bar of this gears meshing, this vertical tooth bar and can promote its electric push rod leaving engagement and be fixedly connected with.
2. gas-fired equipment Emergeny Cutoff Valves according to claim 1, is characterized in that: the mounting platform described spool being formed evagination, is furnished with the holddown spring be set on valve rod between this mounting platform and valve body.
3. gas-fired equipment Emergeny Cutoff Valves according to claim 2, is characterized in that: the lower end of described tooth bar is provided with roller, and this roller is arranged in the fixing chute in a position.
4. gas-fired equipment Emergeny Cutoff Valves according to claim 3, is characterized in that: be provided with the tetrafluoro filling block with valve rod close contact in described valve body.
5. gas-fired equipment Emergeny Cutoff Valves according to claim 4, is characterized in that: described holddown spring one end is welded with spool, the bottom welding of the other end and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510721862.8A CN105299305A (en) | 2015-10-30 | 2015-10-30 | Emergency cut-off valve for fuel gas equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510721862.8A CN105299305A (en) | 2015-10-30 | 2015-10-30 | Emergency cut-off valve for fuel gas equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105299305A true CN105299305A (en) | 2016-02-03 |
Family
ID=55196908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510721862.8A Pending CN105299305A (en) | 2015-10-30 | 2015-10-30 | Emergency cut-off valve for fuel gas equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105299305A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382372A (en) * | 2016-10-14 | 2017-02-08 | 广西欧讯科技服务有限责任公司 | Space-saving pressure-proof throttling valve |
| CN106382371A (en) * | 2016-10-14 | 2017-02-08 | 广西欧讯科技服务有限责任公司 | Throttling valve capable of saving space |
| CN106955204A (en) * | 2017-03-28 | 2017-07-18 | 江南大学 | A kind of automatic locking mechanism applied to care bed |
| CN108953638A (en) * | 2018-06-26 | 2018-12-07 | 浙江派沃自控仪表有限公司 | Self-operated type dual control point quick action emergency valve |
| CN109028162A (en) * | 2018-07-17 | 2018-12-18 | 王小艳 | A kind of gas cooker of self-priming burner |
| CN109058493A (en) * | 2018-10-04 | 2018-12-21 | 盐城欧润石化设备制造有限公司 | A kind of anticorrosive valve of quick cutting fluid |
| CN109611590A (en) * | 2019-01-24 | 2019-04-12 | 左强 | A kind of novel fuel tank isolation valve |
| CN109812839A (en) * | 2017-11-21 | 2019-05-28 | 贵阳安宝燃气防爆安全设备有限公司 | Automatic timing fuel gas is closed and the super automatic cutting device of stream |
| CN111577948A (en) * | 2020-03-31 | 2020-08-25 | 杭州华惠阀门有限公司 | Safety valve |
-
2015
- 2015-10-30 CN CN201510721862.8A patent/CN105299305A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382372A (en) * | 2016-10-14 | 2017-02-08 | 广西欧讯科技服务有限责任公司 | Space-saving pressure-proof throttling valve |
| CN106382371A (en) * | 2016-10-14 | 2017-02-08 | 广西欧讯科技服务有限责任公司 | Throttling valve capable of saving space |
| CN106955204A (en) * | 2017-03-28 | 2017-07-18 | 江南大学 | A kind of automatic locking mechanism applied to care bed |
| CN109812839A (en) * | 2017-11-21 | 2019-05-28 | 贵阳安宝燃气防爆安全设备有限公司 | Automatic timing fuel gas is closed and the super automatic cutting device of stream |
| CN109812839B (en) * | 2017-11-21 | 2024-02-13 | 贵阳安宝燃气防爆安全设备有限公司 | Automatic cut-off device for timing automatic closing and superfluid of fuel gas |
| CN108953638A (en) * | 2018-06-26 | 2018-12-07 | 浙江派沃自控仪表有限公司 | Self-operated type dual control point quick action emergency valve |
| CN108953638B (en) * | 2018-06-26 | 2023-06-27 | 浙江派沃自控仪表有限公司 | Self-operated emergency cut-off valve with double control points |
| CN109028162A (en) * | 2018-07-17 | 2018-12-18 | 王小艳 | A kind of gas cooker of self-priming burner |
| CN109058493A (en) * | 2018-10-04 | 2018-12-21 | 盐城欧润石化设备制造有限公司 | A kind of anticorrosive valve of quick cutting fluid |
| CN109611590A (en) * | 2019-01-24 | 2019-04-12 | 左强 | A kind of novel fuel tank isolation valve |
| CN109611590B (en) * | 2019-01-24 | 2023-11-28 | 安徽尼威汽车动力系统有限公司 | Oil tank isolation valve |
| CN111577948A (en) * | 2020-03-31 | 2020-08-25 | 杭州华惠阀门有限公司 | Safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |