CN201437845U - T-type combined cut-off valve - Google Patents
T-type combined cut-off valve Download PDFInfo
- Publication number
- CN201437845U CN201437845U CN2009201674650U CN200920167465U CN201437845U CN 201437845 U CN201437845 U CN 201437845U CN 2009201674650 U CN2009201674650 U CN 2009201674650U CN 200920167465 U CN200920167465 U CN 200920167465U CN 201437845 U CN201437845 U CN 201437845U
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- valve
- main valve
- valve body
- vertical shaft
- hole
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- Expired - Fee Related
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Abstract
The utility model provides a T-type combined cut-off valve, which is characterized in that a partition panel is arranged in the middle of a main valve body; a flow opening is formed in the partition panel; a rubber pad is cast around the opening; a main valve is arranged above the rubber pad; a by-pass valve is arranged in the main valve; a seal ring is cast on the main valve; the by-pass valve is connected and sealed with a vertical shaft; a hole A is formed on the by-pass valve; a hole B is reserved at the lower end of the vertical shaft positioned with the main valve; a hole retainer ring is arranged in the main valve; a closed coil spring is mounted at the upper end of the by-pass valve; the upper end of the main valve body is assembled with a connection plate of the valve body which is in threaded connection and sealed with a positioning sleeve; a membrane cavity is in threaded connection and sealed with the positioning sleeve; the vertical shaft is mounted at the center of the positioning sleeve; a cylindrical pin is arranged in the approximate middle position of the vertical shaft which shrinks the diameter inwards; an unlocking ring is arranged outside the cylindrical pin; a membrane and an unlocking disc are fastened on the unlocking ring; an unlocking rod is fixed on the unlocking disc; a manual unlocking button is mounted on the unlocking rod; and an adjusting spring and an adjusting nut are mounted on the unlocking disc. The utility model has the benefits of low cost, convenient maintenance, safety, reliability and high sensitivity, and can achieve the cutting-off through the self-pressure of fuel gas.
Description
Technical field
The utility model relates to the shut-off means that prevents the superpressure air feed in a kind of fuel gas pipeline, is a kind of T type combined type cut-off valve specifically.
Background technique
In the combustion gas network transmission process, for reducing the cost in loss and raising quantity delivered, reduction transportation pipe road, combustion gas is high pressure conditions and carries, must convert low-pressure state to during use, because combustion gas itself is inflammable and explosive, all place safety above the other things in development combustion gas cause in countries in the world.In order to ensure the safety of gas supply, need between gas pressure regulator, governor and user's gas equipment, Emergeny Cutoff Valves be installed.
Summary of the invention
The technical problems to be solved in the utility model provide a kind of be provided with manual unlocking, built-in bypass be convenient to manually opened, change the T type combined type cut-off valve of combination according to cut-out pressure and valve body variable format.
The technological scheme that its technical problem that solves the utility model adopts is: it comprises main valve body, be provided with partition panel in the middle of the main valve body, opening is arranged in the partition panel, be marked with rubber pad around the hole, form the enterprising airflow direction that goes out down, the rubber pad top is provided with main valve, enough gas communication cavitys are arranged between main valve and the rubber pad during unlatching, be provided with bypass valve in the main valve, be marked with seal ring on the main valve, bypass valve is connected with vertical shaft and seals, bypass valve is provided with the A hole, leave the B hole in the time of vertical shaft lower end and main valve location, be provided with the travel position that the hole back-up ring is used to control bypass valve in the main valve, the bypass valve upper end is equipped with and is closed spring, main valve body upper end and the assembling of valve body land, valve body land and setting sleeve are with being threaded and sealing, film chamber and setting sleeve are with being threaded and sealing, and vertical shaft is equipped with at the setting sleeve center, and the inside undergauge of the about medium position of vertical shaft is provided with straight pin, the straight pin outside is provided with separates lock ring, separate the interior corresponding straight pin position of lock ring and be provided with two diameters of size, separate lock ring and tightened diaphragm reconciliation lock collar, separate and be fixed with trip lever on the lock collar, the manual unlocking button is housed on the trip lever, separates Regulation spring and adjusting nut are housed on the lock collar.
T type combined type cut-off valve of the present utility model is inserted the front end of pressure governor in the fuel gas pipeline, on carry T type handle, this moment, straight pin was positioned at vertical shaft undergauge place, the upper end that the path of separating lock ring forces straight pin to move inward to block vertical shaft undergauge place, vertical shaft can not be moved down, and this moment, cut-off valve was opened.Set the cut-out pressure of cut-off valve with the adjusting nut pressure spring, downstream pressure governor P2 propagation of pressure is arrived in the film chamber, below of cut-off valve diaphragm, when downstream pressure governor fault P2 pressure is higher than cut-off valve setting cut-out pressure, the pressure that diaphragm overcomes Regulation spring drives on the release ring and moves, vertical shaft produces downward axial force under the effect of closing spring, straight pin is outwards moved to separate place, the big footpath of lock ring, bypass valve, main valve move down with vertical shaft, and main valve engages the purpose that realizes cutting off combustion gas in the pipeline with the main valve body sealing gasket.
When cut-off valve cuts out, inlet/outlet pressure reduction is very big, carry T type handle on this moment, valve rod drives on the bypass valve and moves to the hole back-up ring, combustion gas is gone into the B hole through the A of bypass valve orifice flow and is flowed into the outlet side pipeline again the pressure of import and outlet is equated, thereby bypass valve drives the hole back-up ring and main valve is easily opened cut-off valve.
When meeting urgency and need emergency cut-off, the moving unlocking knob of handle on this moment, the manual unlocking button drives on the trip lever reconciliation lock ring and moves, vertical shaft produces downward axial force under the effect of closing spring, straight pin is outwards moved to separate place, the big footpath of lock ring, bypass valve, main valve move down with vertical shaft, thereby make cut-off valve manual unlocking, emergency cut-off.
For the ease of maintenance and saving cost, described main valve body can be matched the valve body land according to specification, described setting sleeve can be matched the different film chamber of diameter according to setting pressure, setting sleeve and valve body land are with being threaded, setting sleeve and film chamber, setting sleeve and valve body land, main valve body and valve body land form three's combined type, compare more the processing that economizes in raw materials, is more convenient for, be more convenient for keeping in repair for the cut-off valve of one with the three.
The beneficial effect that the utility model produces is, cost is low, be convenient to keep in repair, only need can realize cutting off by the pressure of combustion gas self, and is safe and reliable and highly sensitive.
Description of drawings
Fig. 1 is the structural representation of T type combined type cut-off valve of the present utility model under in working order;
Fig. 2 is the structural representation of T type combined type cut-off valve of the present utility model under dissengaged positions;
Among the figure: 1, seal ring, 2, bypass valve, 3, main valve, 4, the hole back-up ring, 5, close spring, 6, vertical shaft, 7, main valve body, 8, the valve body land, 9, setting sleeve, 10, the film chamber, 11, separate lock ring, 12, straight pin, 13, separate lock collar, 14, diaphragm, 15, trip lever, 16 manual unlocking buttons, 17, Regulation spring, 18, stuffing box gland, 19, adjusting nut, 20, T type handle.
Embodiment
T type combined type cut-off valve under the working state as shown in Figure 1, it comprises main valve body 7, be provided with partition panel in the middle of the valve body master 7, opening is arranged in the partition panel, be marked with rubber pad around the hole, form the enterprising airflow direction that goes out down, the rubber pad top is provided with main valve 3, enough gas communication cavitys are arranged between main valve 3 and the rubber pad during unlatching, be provided with bypass valve 2 in the main valve 3, be marked with seal ring 1 on the main valve 3, bypass valve 2 is connected with vertical shaft 6 and seals, bypass valve is provided with the A hole, leave the B hole in the time of vertical shaft 6 lower ends and main valve 3 location, be provided with the travel position that hole back-up ring 4 is used to control bypass valve in the main valve 3, bypass valve 2 upper ends are equipped with and are closed spring 5, main valve body 7 upper ends and 8 assemblings of valve body land, valve body land 8 is threaded with setting sleeve 9 usefulness and seals, film chamber 10 is threaded with setting sleeve 9 usefulness and seals, vertical shaft 6 is equipped with at setting sleeve 9 centers, the inside undergauge of vertical shaft 6 about medium positions is provided with straight pin 12, straight pin 12 outsides are provided with separates lock ring 11, separate lock ring 11 interior corresponding straight pin 12 positions and be provided with two diameters of size, separate lock ring 11 and tighten intrinsic diaphragm 14 reconciliation lock collars 13, separate and be fixed with trip lever 15 on the lock collar 13, manual unlocking button 16 is housed on the trip lever 15, separate Regulation spring 17 and adjusting nut 19 are housed on the lock collar 13.
T type combined type cut-off valve of the present utility model is inserted the front end of pressure governor in the fuel gas pipeline, on carry T type handle 20, this moment, straight pin 12 was positioned at vertical shaft 6 undergauge places, the path of separating lock ring 11 forces straight pin 12 to move inward the upper end of blocking vertical shaft 6 undergauge places, vertical shaft 6 can not be moved down, and this moment, cut-off valve was opened.Set the cut-out pressure of cut-off valve with adjusting nut 19 pressure springs, downstream pressure governor P2 propagation of pressure is arrived in the film chamber, below 10 of cut-off valve diaphragm 14, when downstream pressure governor fault P2 pressure is higher than cut-off valve setting cut-out pressure, the pressure that diaphragm 14 overcomes Regulation spring 17 drives on the release ring 11 and moves, vertical shaft 6 produces downward axial force under the effect of closing spring 5, straight pin 12 is outwards moved to separate place, lock ring 11 big footpath, bypass valve 2, main valve 3 move down with vertical shaft 6, main valve 3 engages with main valve body 7 sealing gaskets and cuts off pipeline, and the state of this moment as shown in Figure 2.
Claims (4)
1. T type combined type cut-off valve, comprise main valve body, be provided with partition panel in the middle of the main valve body, opening is arranged in the partition panel, it is characterized in that, be marked with rubber pad around the hole, the rubber pad top is provided with main valve, be provided with bypass valve in the main valve, be marked with seal ring on the main valve, bypass valve is connected with vertical shaft and seals, and described bypass valve is provided with the A hole, leave the B hole in the time of vertical shaft lower end and main valve location, be provided with the travel position that the hole back-up ring is used to control bypass valve in the main valve, the bypass valve upper end is equipped with and is closed spring, main valve body upper end and the assembling of valve body land, valve body land and setting sleeve are with being threaded and sealing, film chamber and setting sleeve are with being threaded and sealing, and vertical shaft is equipped with at the setting sleeve center, and the inside undergauge of the about medium position of vertical shaft is provided with straight pin, the straight pin outside is provided with separates lock ring, separate the interior corresponding straight pin position of lock ring and be provided with two diameters of size, separate lock ring and tightened diaphragm reconciliation lock collar, separate and be fixed with trip lever on the lock collar, unlocking knob is housed on the trip lever, separates Regulation spring and adjusting nut are housed on the lock collar.
2. T type combined type cut-off valve according to claim 1 is characterized in that described bypass valve is provided with the A hole, leaves the B hole in the time of vertical shaft lower end and main valve location, is provided with the travel position that the hole back-up ring is used to control bypass valve in the main valve.
3. T type combined type cut-off valve according to claim 1, it is characterized in that, described main valve body can be matched the valve body land according to specification, described setting sleeve can be matched the different film chamber of diameter according to setting pressure, setting sleeve and valve body land are with being threaded, and setting sleeve and film chamber, setting sleeve and valve body land, main valve body and valve body land form three's combined type.
4. T type combined type cut-off valve according to claim 1 is characterized in that, top, described film chamber is provided with the manual unlocking button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201674650U CN201437845U (en) | 2009-07-24 | 2009-07-24 | T-type combined cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201674650U CN201437845U (en) | 2009-07-24 | 2009-07-24 | T-type combined cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201437845U true CN201437845U (en) | 2010-04-14 |
Family
ID=42399819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201674650U Expired - Fee Related CN201437845U (en) | 2009-07-24 | 2009-07-24 | T-type combined cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201437845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968232A (en) * | 2010-10-27 | 2011-02-09 | 蒋清校 | Gas stove pan-overflowing automatic flameout device |
-
2009
- 2009-07-24 CN CN2009201674650U patent/CN201437845U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968232A (en) * | 2010-10-27 | 2011-02-09 | 蒋清校 | Gas stove pan-overflowing automatic flameout device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Jinyan Document name: Notification of Decision on Request for Restoration of Right |
|
| 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: 20100414 Termination date: 20180724 |