CN105257888A - Emergency cutoff valve for fuel gas pipeline - Google Patents
Emergency cutoff valve for fuel gas pipeline Download PDFInfo
- Publication number
- CN105257888A CN105257888A CN201510721501.3A CN201510721501A CN105257888A CN 105257888 A CN105257888 A CN 105257888A CN 201510721501 A CN201510721501 A CN 201510721501A CN 105257888 A CN105257888 A CN 105257888A
- Authority
- CN
- China
- Prior art keywords
- valve
- cam
- pipeline
- rod
- valve 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
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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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
- F16K31/46—Mechanical actuating means for remote operation
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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
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52408—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve
- F16K31/5245—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve with a valve member of conical shape
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 device valves and provides an emergency cutoff valve for a fuel gas pipeline. The emergency cutoff valve is arranged in the pipeline of a fuel gas device. The emergency cutoff valve comprises a valve seat, a valve rod and a valve body. The valve seat is arranged in the pipeline. The valve body is fixed to the pipeline. The valve rod penetrates the valve body. The lower end of the valve rod is provided with a valve element matched with the valve seat in a sealed manner. The upper end of the valve rod extends out of the valve body. The emergency cutoff valve further comprises a cam. The upper end of the valve rod is fixedly connected with a connection block. The connection block is provided with an arc-shaped strip hole. A connection column inserted into the strip hole is arranged on the side face of the cam. A rotating shaft of the cam is in key connection with a ratchet wheel. An electric push rod is fixedly arranged in the position beside the cam. A paw matched with the ratchet wheel is fixedly connected to an output shaft of the electric push rod. By means of the scheme, manual control of operation staff is not needed, the operation staff can finish the whole cutoff process in a control center, and the safety of the operation staff is guaranteed; cutoff is achieved through the gravity of the valve element and the valve rod; and compared with a manual pull cutoff manner, the cutoff speed is higher, and accidents are prevented from spreading.
Description
Technical field
The invention belongs to gas-fired equipment valve technology field.
Background technique
Emergeny Cutoff Valves is a kind of safety installations be usually arranged on gas-fired equipment pipeline.When pipeline and annex thereof break or misoperation time, in order to Accident prevention spreads, need emergency cut-off Emergeny Cutoff Valves, to cut off source of the gas rapidly, stop accident continuation development, 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 entirety, 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: need operator to pull rod head and make 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 by manually valve handle being pulled, and then existing large-scale Emergeny Cutoff Valves cannot be closed.
Summary of the invention
The invention is intended to provide a kind of safe and reliable gas pipeline Emergeny Cutoff Valves.
Gas pipeline 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 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, also comprise cam, the upper end of valve rod is fixedly connected with contiguous block, this contiguous block has the cylindrical void of arc, and flank of cam is provided with the attachment post inserted in cylindrical void; In the rotating shaft of cam, key is connected with ratchet, is fixed with electric push rod cam beside, and this electric push rod output shaft is fixedly connected with the ratchet coordinated with ratchet.
Beneficial effect: under normal circumstances, starting cam, cam rotates and valve rod is overcome on Compress Spring and gravity move, thus spool moves away valve seat (opening gas pipeline), electricity push rod output shaft stretches out, and ratchet stretches between the ratchet of ratchet, brake cam, make spool keep the state be separated with valve seat, then close the power source of cam; After running into urgency, after central processing unit (CPU) receives signal (such as coal gas detection head detects gas leakage signal), electricity push rod output shaft retraction, ratchet departs from ratchet, valve rod falls, spool under the double action of Compress Spring and spring with valve seat close contact, realize the pipeline of emergency cut-off gas-fired equipment.Compare the Emergeny Cutoff Valves that traditional employing manually carries out cutting off combustion gas, 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; And utilize the deadweight of valve core valve stem to realize cutting off, compare and utilize staff to pull the mode realizing cut-out, this programme cut-off velocity is faster, and Accident prevention spreads expansion.
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 elastic force can superpose with gravity and spool is moved down fast, improves cut-off velocity.
Further, the free end of the attachment post diameter that is threaded is greater than the anti-of bar hole width and raises one's hat, and prevents contiguous block from coming off from attachment post.
Further, valve rod welds with contiguous block, connects more firm.
Further, the cambered surface of cylindrical void, ensures that cam moves that can not to be connected post when contiguous block moves stuck upward.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention gas pipeline 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, contiguous block 7, cylindrical void 8, cam 9, ratchet 10, ratchet 11, electric push rod 12, attachment post 13.
Embodiment's gas pipeline Emergeny Cutoff Valves is substantially as shown in Figure 1:
Gas pipeline Emergeny Cutoff Valves, is arranged in the pipeline 1 of gas-fired equipment, comprises the valve seat 2 be arranged in pipeline 1 and the valve body 3 being bolted on pipeline 1 outside, and 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.
The upper end of valve rod 4 is welded with a contiguous block 7, on this contiguous block 7 with the cambered surface of the cylindrical void 8(cylindrical void 8 of arc upward), the radius of curvature of this cylindrical void 8 is identical with the radius of curvature of cam 9 movement locus.The side of cam 9 is welded with attachment post 13, this attachment post 13 inserts in the cylindrical void 8 of connecting plate, and the free end of attachment post 13 diameter that is threaded is greater than anti-the raising one's hat of cylindrical void 8 width.The rotating shaft of this cam 9 is positioned at the stub end of cam 9, this rotating shaft is connected by flat key with the center hole of ratchet 10, when cam 9 rotates, and ratchet 10 and cam 9 coaxial rotation, attachment post 13 on cam 9 drives contiguous block 7 to move up and down, thus valve rod 4 is moved up and down.
Be provided with electric push rod 12 on the right side of ratchet 10, the output terminal of this electric push rod 12 is welded with the ratchet 11 pointing to ratchet 10, and this electric push rod 12 is connected with central processing unit (CPU).
The working principle of the present embodiment: under normal circumstances, starting cam 9, cam 9 rotates and valve rod 4 is overcome on Compress Spring and gravity move, thus spool 41 moves away valve seat 2(opening conduits 1), electricity push rod 12 output shaft stretches out, and ratchet 11 stretches between the ratchet 10 of ratchet 10, brake cam 9, make spool 41 keep the state be separated with valve seat 2, then close the power source of cam 9; After running into urgency, after central authorities' process receives signal (such as coal gas detection head detects gas leakage signal), electricity push rod 12 output shaft retraction, ratchet 11 departs from ratchet 10, valve rod 4 falls, spool 41 under the double action of Compress Spring and spring with valve seat 2 close contact, realize 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 pipeline Emergeny Cutoff Valves, is arranged in the pipeline of gas-fired equipment, comprises valve seat, valve rod and valve body, valve seat is positioned at pipeline, valve body is fixed on pipeline, and valve rod runs through valve body, and the lower end of valve rod is with the spool coordinated with valve base sealing, valve body is stretched out in the upper end of valve rod, it is characterized in that, also comprise cam, the upper end of valve rod is fixedly connected with contiguous block, this contiguous block has the cylindrical void of arc, flank of cam is provided with the attachment post inserted in cylindrical void; In the rotating shaft of cam, key is connected with ratchet, is fixed with electric push rod cam beside, and this electric push rod output shaft is fixedly connected with the ratchet coordinated with ratchet.
2. gas pipeline 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 pipeline Emergeny Cutoff Valves according to claim 2, is characterized in that: the free end of the described attachment post diameter that is threaded is greater than the anti-of bar hole width and raises one's hat.
4. gas pipeline Emergeny Cutoff Valves according to claim 3, is characterized in that: described valve rod welds with contiguous block.
5. gas pipeline Emergeny Cutoff Valves according to claim 4, is characterized in that: the cambered surface of described cylindrical void upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510721501.3A CN105257888A (en) | 2015-10-30 | 2015-10-30 | Emergency cutoff valve for fuel gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510721501.3A CN105257888A (en) | 2015-10-30 | 2015-10-30 | Emergency cutoff valve for fuel gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105257888A true CN105257888A (en) | 2016-01-20 |
Family
ID=55097716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510721501.3A Pending CN105257888A (en) | 2015-10-30 | 2015-10-30 | Emergency cutoff valve for fuel gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105257888A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122575A (en) * | 2016-07-04 | 2016-11-16 | 河北秦汉电子科技有限公司 | A kind of mechanical electric magnetic-type gas emergency cut-off valve |
| CN106568076A (en) * | 2016-10-18 | 2017-04-19 | 天津市华诺盛源科技有限公司 | Boiler protection control system |
-
2015
- 2015-10-30 CN CN201510721501.3A patent/CN105257888A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122575A (en) * | 2016-07-04 | 2016-11-16 | 河北秦汉电子科技有限公司 | A kind of mechanical electric magnetic-type gas emergency cut-off valve |
| CN106122575B (en) * | 2016-07-04 | 2021-03-19 | 河北秦汉电子科技有限公司 | Mechanical electromagnetic type gas emergency cut-off valve |
| CN106568076A (en) * | 2016-10-18 | 2017-04-19 | 天津市华诺盛源科技有限公司 | Boiler protection control system |
| CN106568076B (en) * | 2016-10-18 | 2019-04-12 | 天津市华诺盛源科技有限公司 | A kind of boiler protection control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160120 |
|
| WD01 | Invention patent application deemed withdrawn after publication |