CN203757103U - Safe automatically-closing gas valve - Google Patents
Safe automatically-closing gas valve Download PDFInfo
- Publication number
- CN203757103U CN203757103U CN201420140541.XU CN201420140541U CN203757103U CN 203757103 U CN203757103 U CN 203757103U CN 201420140541 U CN201420140541 U CN 201420140541U CN 203757103 U CN203757103 U CN 203757103U
- Authority
- CN
- China
- Prior art keywords
- valve
- closing
- outlet pipe
- steam outlet
- pipe opening
- 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.)
- Expired - Fee Related
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- Safety Valves (AREA)
Abstract
The utility model discloses a safe automatically-closing gas valve. The safe automatically-closing gas valve comprises an automatically-closing valve body with one end connected with a gas inlet pipe and the other end connected with a gas outlet pipe, the gas inlet pipe is provided with a ball valve, the automatically-closing valve body comprises a valve seat and a valve cover which are connected with each other, and the inside of a cavity formed by the valve seat and the valve cover is provided with a pressure sensing device and a gas outlet pipe opening and closing device which is controlled by the pressure sensing device to move; the gas outlet pipe opening and closing device is coaxial with the gas outlet pipe, and the pressure sensing device is perpendicular with the gas outlet pipe opening and closing device. by arranging the pressure sensing device in the vertically direction and the gas outlet pipe opening and closing device in the horizontal direction coaxial with the gas outlet pipe, the safe automatically-closing gas valve achieves accurate reaction to a gas pressure decreasing close to a preset pressure valve and further enhance the safety coefficient.
Description
Technical field
The utility model relates to a kind of safety valve, relates in particular to secure gas self-closing valve.
Background technique
Safety valve belongs to a kind of self-acting valve, for the safety protection of system or device.The working principle of safety valve is generally and at gas pressure, reaches setting value and automatically open, and when pressure drop is following to system settings, automatically closes.Its structural principle of current safety valve is vertical, and to control the spool that pressure sensitive device in safety valve namely and control valve body open and close be to be all positioned on same vertical axis, although this kind of traditional control gear has the easy and lower-cost processed edge of manufacture, but its pressure sensitive for safety valve inner valve body and control procedure are all comparatively blunt, easily produce some potential safety hazards, can not sense that some pressure drops are to the danger situation that approaches system settings generation.
Chinese utility model patent 200620031023.X discloses a kind of safety valves for gas, it comprises valve body, be arranged on the valve seat between valve flowing channel, the flap that is arranged on valve seat top by pressure spring, is provided with polytetrafluoroethylene sealing gasket by compressing member on the sealing surface that described flap matches with valve seat.It responds to the gas pressure in valve body by flap this kind of safety valves for gas, and its whole control is all vertically to control and open and close, and sensitivity and the execution degree of relative pressure induction are all blunt.
Summary of the invention
The utility model provides a kind of highly sensitive, execution speed is fast, safety coefficient is high secure gas self-closing valve.
A kind of secure gas self-closing valve, comprise that one end is connected with suction tude, the other end is connected with the self closing stop valve of steam outlet pipe, suction tude is provided with ball valve, described self closing stop valve comprises interconnective valve seat and valve gap, is provided with pressure sensitive device and by the steam outlet pipe opening and closing device of pressure sensitive device controlled motion in the cavity that valve seat and valve gap form; Described steam outlet pipe opening and closing device and steam outlet pipe are positioned on same axis, and pressure sensitive device and steam outlet pipe opening and closing device vertically arrange mutually.This kind of secure gas self-closing valve is by being located at pressure sensitive device and steam outlet pipe opening and closing device respectively the substantially horizontal that vertical direction and steam outlet pipe are positioned at same axis, due to steam outlet pipe opening and closing device and steam outlet pipe be positioned on same axis, greatly improved highly sensitive, execution speed is fast, and pressure sensitive device has reduced because direction is vertically to steam outlet pipe opening and closing device the factor that affects pressure sensing device senses ability, realization is reduced near accurate response pressure set points for gas pressure, has improved safety coefficient.
Described pressure sensitive device comprises the pull bar of being located at valve gap center and the iron plate of being located at interlinking lever end, and pull bar periphery is overlapped respectively tower spring, pallet, diaphragm, magnet, by the relatively traditional valve flap structure of diaphragm induction gas pressure, has improved the sensitivity of induction.
As structure, optimize tracheae opening and closing device and comprise plug, plug one end is connected with axostylus axostyle, axostylus axostyle lies against on support, axostylus axostyle the other end connecting rocker arm, support is connected by rotating shaft with rocking arm, plug is realized the open and close controlling for steam outlet pipe by the axial motion of axostylus axostyle, because axostylus axostyle is put in the stability that has improved axostylus axostyle operation on support, prevents that axostylus axostyle from skew or stuck technical failure occurring.
Described pressure sensitive device is connected by connection part with steam outlet pipe opening and closing device; Described connection part connects and comprises connecting rod, and connecting rod one end is provided with coupling shaft, and the other end embeds screw, this kind of connection part is by coupling shaft connecting rocker arm, screw cylinder lever connecting rod, has realized the vertical control force of pressure sensitive device, changes the required horizontal force of steam outlet pipe opening and closing device into.
Described tower spring, between valve gap and the nut of pull bar periphery, is threaded between nut and pull bar, and the spring force that rotates up and down adjusting tower spring by nut is to control secure gas self-closing valve for the setting induction numerical value of gas pressure.
Valve gap is stretched out on described pull bar top, and by the airtight cylinder lever connecting rod of deduction cap and valve gap, improves the sealing effect of secure gas self-closing valve.
The mutual integrally casting moulding of described steam outlet pipe and valve seat, reduces jointing and has reduced gas leakage risk.
The utility model is by being located at pressure sensitive device and steam outlet pipe opening and closing device respectively the substantially horizontal that vertical direction and steam outlet pipe are positioned at same axis, due to steam outlet pipe opening and closing device and steam outlet pipe be positioned on same axis, greatly improved highly sensitive, execution speed is fast, and pressure sensitive device has reduced because direction is vertically to steam outlet pipe opening and closing device the factor that affects pressure sensing device senses ability, realization is reduced near accurate response pressure set points for gas pressure, has improved safety coefficient.
Accompanying drawing explanation
Be illustrated in figure 1 the utility model secure gas self-closing valve perspective view;
Be illustrated in figure 2 the utility model secure gas self-closing valve sectional structure schematic diagram.
Embodiment
A kind of secure gas self-closing valve as shown in Figure 1, 2, comprise that one end is connected with suction tude 1, the other end is connected with the self closing stop valve of steam outlet pipe 4, suction tude 1 is provided with ball valve 2, self closing stop valve comprises interconnective valve seat 13 and valve gap 3, is provided with pressure sensitive device and by the steam outlet pipe opening and closing device of pressure sensitive device controlled motion in the cavity that valve seat 13 and valve gap 3 forms; Described steam outlet pipe opening and closing device and steam outlet pipe are positioned on same axis, and pressure sensitive device and steam outlet pipe opening and closing device vertically arrange mutually.Steam outlet pipe 4 and the mutual integrally casting moulding of valve seat 13.
Pressure sensitive device comprises the iron plate 19 of being located at the pull bar 8 at valve gap 3 centers and being located at connecting rod 14 ends, and pull bar 8 peripheries are overlapped respectively tower spring 6, pallet 11, diaphragm 12, magnet 18.Steam outlet pipe opening and closing device comprises plug 10, and plug 10 one end are connected with axostylus axostyle 17, and axostylus axostyle 17 lies against on support 16, axostylus axostyle 17 the other end connecting rocker arms 15, and support 16 is connected by rotating shaft with rocking arm 15.
Pressure sensitive device is connected by connection part with steam outlet pipe opening and closing device; Connection part connects and comprises connecting rod 14, and connecting rod 14 one end are provided with coupling shaft, coupling shaft connecting rocker arm 15, and connecting rod 14 the other ends embed screw 5, screw 5 cylinder lever connecting rods 8, screw 5 can pass through link cylinder lever connecting rod 8 certainly.
As the preferred tower spring 6 of structure, between valve gap 3 and the nut 9 of pull bar 8 peripheries, between nut 9 and pull bar 8, be threaded.Valve gap 3 is stretched out on pull bar 8 tops, and by the airtight cylinder lever connecting rod 8 of deduction cap 7 and valve gap 3.
A concrete workflow of the utility model is: ball valve 2 is opened self closing stop valve, gas pressure is greater than the spring force of tower spring 6 of diaphragm 12 upsides and the magnetic force between iron plate 19 and magnet 18 in self closing stop valve, pull bar 8 moves upward and drives rocking arm 15 to control plug 10 under axostylus axostyle 17 promotes, open the normal air feed of steam outlet pipe 4 system, when system gas pressure drop, magnetic force during lower than setting value between the spring force of tower spring 6 and iron plate 19 and magnet 18, press down diaphragm 12, pull bar 8 moves downward and drives rocking arm 15 to control plug 10 under axostylus axostyle 17 pulls, close steam outlet pipe 4, guarantee security of system.
Claims (7)
1. a secure gas self-closing valve, comprise that one end is connected with suction tude (1), the other end is connected with the self closing stop valve of steam outlet pipe (4), suction tude (1) is provided with ball valve (2), it is characterized in that: described self closing stop valve comprises interconnective valve seat (13) and valve gap (3), in the cavity that valve seat (13) and valve gap (3) form, be provided with pressure sensitive device and by the steam outlet pipe opening and closing device of pressure sensitive device controlled motion; Described steam outlet pipe opening and closing device and steam outlet pipe are positioned on same axis, and pressure sensitive device and steam outlet pipe opening and closing device vertically arrange mutually.
2. secure gas self-closing valve as claimed in claim 1, it is characterized in that: described pressure sensitive device comprises the iron plate (19) of being located at the pull bar (8) at valve gap (3) center and being located at connecting rod (14) end, pull bar (8) periphery is overlapped respectively tower spring (6), pallet (11), diaphragm (12), magnet (18).
3. secure gas self-closing valve as claimed in claim 1, it is characterized in that: described steam outlet pipe opening and closing device comprises plug (10), plug (10) one end is connected with axostylus axostyle (17), axostylus axostyle (17) lies against on support (16), axostylus axostyle (17) the other end connecting rocker arm (15), support (16) is connected by rotating shaft with rocking arm (15).
4. secure gas self-closing valve as claimed in claim 1, is characterized in that: described pressure sensitive device is connected by connection part with steam outlet pipe opening and closing device; Described connection part connects and comprises connecting rod (14), and connecting rod (14) one end is provided with coupling shaft, and the other end embeds screw (5).
5. secure gas self-closing valve as claimed in claim 2, is characterized in that: described tower spring (6) is positioned between valve gap (3) and the nut (9) of pull bar (8) periphery, between nut (9) and pull bar (8), is threaded.
6. secure gas self-closing valve as claimed in claim 2, is characterized in that: valve gap (3) is stretched out on described pull bar (8) top, and by the airtight cylinder lever connecting rod of deduction cap (7) (8) and valve gap (3).
7. secure gas self-closing valve as claimed in claim 1, is characterized in that: described steam outlet pipe (4) and valve seat (13) integrally casting moulding mutually.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140541.XU CN203757103U (en) | 2014-03-22 | 2014-03-22 | Safe automatically-closing gas valve |
| HK15102684.0A HK1202362A2 (en) | 2014-03-22 | 2015-03-17 | Combustible gas safety self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140541.XU CN203757103U (en) | 2014-03-22 | 2014-03-22 | Safe automatically-closing gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203757103U true CN203757103U (en) | 2014-08-06 |
Family
ID=51252381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420140541.XU Expired - Fee Related CN203757103U (en) | 2014-03-22 | 2014-03-22 | Safe automatically-closing gas valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203757103U (en) |
| HK (1) | HK1202362A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202292A (en) * | 2015-09-30 | 2015-12-30 | 陈美忠 | Quick pressure reducing valve |
| CN110792814A (en) * | 2018-08-02 | 2020-02-14 | 陈石明 | Gas safety self-closing valve |
-
2014
- 2014-03-22 CN CN201420140541.XU patent/CN203757103U/en not_active Expired - Fee Related
-
2015
- 2015-03-17 HK HK15102684.0A patent/HK1202362A2/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202292A (en) * | 2015-09-30 | 2015-12-30 | 陈美忠 | Quick pressure reducing valve |
| CN110792814A (en) * | 2018-08-02 | 2020-02-14 | 陈石明 | Gas safety self-closing valve |
| CN110792814B (en) * | 2018-08-02 | 2021-04-30 | 陈石明 | Gas safety self-closing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1202362A2 (en) | 2015-09-25 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20180322 |