CN86205569U - Self-controlled antioverpressure pneumatic high-pressure valve - Google Patents
Self-controlled antioverpressure pneumatic high-pressure valve Download PDFInfo
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- CN86205569U CN86205569U CN 86205569 CN86205569U CN86205569U CN 86205569 U CN86205569 U CN 86205569U CN 86205569 CN86205569 CN 86205569 CN 86205569 U CN86205569 U CN 86205569U CN 86205569 U CN86205569 U CN 86205569U
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- pressure
- gate valve
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- slide bar
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Abstract
The utility model discloses a self-controlled antioverpressure pneumatic high-pressure valve used for centering the mud tubes of petroleum drilling. The self-controlled antioverpressure pneumatic high-pressure valve is suitable for automatically and fully releasing pressure when operation is frequent and the medium pressure of high pressure fluid exceeds limit value. The medium pressure is transferred via an elastic seal gasket (4) and a slide bar (5) for acting on an elastic cutting sleeve (6). In the situation of overpressure, the conical surface of the slide bar slips out after expanding the anchor ring of the elastic cutting sleeve and pushes a valve core (7) to change a control gas path, and the pneumatic high-pressure valve is opened. In the meantime, the clutch of a mud pump can be controlled for deflation and separation, the mud pump stops working, and thus dual safety protection can be realized.
Description
Automatic control overpressure protection pneumatic high-voltage gate valve is a kind of pneumatic high-voltage gate valve that has overpressure protector.
This automatic control overpressure protection pneumatic high-voltage gate valve is used as in high pressure pipe joint in the frequent use of general gate valve; the working pressure of all right limit fluid medium; when its working pressure surpasses limit value; automatic control overpressure protection pneumatic high-voltage gate valve can be opened pressure release automatically, and high-pressure system is carried out safety protection.
In the oil drilling slurry circulatory system, equipment and manifold are carried out safety protection by the safety valve that is installed on the slurry pump outlet line.Oil drilling is open-air all weather operations, needs in the drilling process to open more continually, stops slurry pump and open and close " are put back to Water gate valve ".The performance of mud medium and the operating mode of pump are complicated and changeable, and slurry pump is in work under the mal-condition.Occur superpressure easily and suppress pump, even the phenomenon that safety valve is repeatedly opened pressure release takes place at short notice.Slurry pump is now used piston pin type and Direct spring loaded safety valve.Under the multiple specific factor aspect structure, material, manufacturing, the use, it is more the malfunctioning situation of safety valve to occur, and has therefore caused the serious accident of the person and equipment aspect.Along with the popularization of high-pressure jet drilling technology with popularize, the slurry pump working pressure increases substantially, the highest 25MPa that reached of domestic slurry pump working pressure, the safety protection problem is more outstanding.
The essence of this model utility is: automatic control overpressure protection pneumatic high-voltage gate valve " automatic control overpressure protection " part as shown in Figure 1, 2, this part is installed on the valve gap 1 of pneumatic high-voltage gate valve (shown in Figure 3), its operation and control gas circuit are as shown in Figure 4.Perforate on the valve gap 1 of pneumatic high-voltage gate valve, by spiral marking connection pressure control valve: joint 3, elastic sealing gasket 4, slide bar 5, elastic ferrule 6 and housing 2, and the spool 7 that goes to promote a two-position three way machine control selector valve (being made up of spool 7, piston 8, sealing gasket 9, cylinder body 10, nut 11, seal ring 12, plug 13, packing ring 14, seal ring 15, seal ring 16, seal ring 17) by slide bar 5 moves 21 these machine control selector valves of expression among Fig. 4.The gas that source of the gas comes is advanced, after the B mouth goes out, is become the control gas of pneumatic high-voltage gate valve cylinder air feeding apparatus 23,24 through valve 22 by the A mouth on this machine control selector valve cylinder body 10, and the C mouth on this moment cylinder body 10 is closed.When reversing valve operated 22 connected the control gas circuit, cylinder air feeding apparatus 23,24 all had control gas, and wherein air feeding apparatus 23 makes the 20a air inlet of cylinder piston top, air feeding apparatus 24 makes the 20b exhaust of cylinder piston bottom, cylinder piston 20 is descending, drives valve plate 19 and moves down, and closes the pneumatic high-voltage gate valve.When reversing valve operated 22 disconnected the control gas circuit, air feeding apparatus 23,24 did not all have control gas, and this moment, air feeding apparatus 23 made cylinder piston top 20a venting, air feeding apparatus 24 makes the 20b air inlet of cylinder piston bottom, cylinder piston 20 is up, drives valve plate 19 and moves up, and opens the pneumatic high-voltage gate valve.Above-mentioned operating mode is a working pressure in limited range the time, and 22 pairs of Pneumatic gate valves of available selector valve are closed and open operation.
When the pressure that is born when the pneumatic high-voltage gate valve of closing surpasses limit value, slide bar 5 will promote spool 7 and move, and be adjacent on plug 13 until sealing gasket 9, and the A mouth on this moment cylinder body 10 is closed and died, and the B mouth on the while cylinder body 10 communicates with the C mouth.Gas in cylinder air feeding apparatus 23, the 24 control gas circuits enters atmosphere by the C mouth of cylinder body 10.Because cylinder air feeding apparatus 23,24 does not have control gas, air feeding apparatus 23 makes the 20a exhaust of cylinder piston top, and air feeding apparatus 24 makes the 20b air inlet of cylinder piston bottom, and cylinder piston 20 is up, drives flashboard 19 and moves up, and opens the pressure release of pneumatic high-voltage gate valve.Make the pressure control valve that spool 7 moves when superpressure: the structure and the working principle of joint 3, elastic sealing gasket 4, slide bar 5, elastic ferrule 6 and housing 2 are as follows:
Joint endoporus 3a directly communicates with valve gap inner chamber 1a, and joint 3 is used spiral marking connection with housing 2, and the elastic sealing gasket 4 of an inflatable contraction has been installed between joint 3 and slide bar 5.These elastic sealing gasket 4 sealed high pressure flowing mediums are isolated slide bar 5 and high-pressure fluid medium, and can fill up because slide bar 5 moves the space that the back forms in housing 2.Slide bar 5 lower ends and elastic sealing gasket 4 are fitted, and spool 7 is withstood in slide bar 5 upper ends, at the middle part of slide bar 5, smooth hard conical surface 5a is arranged.The basic shape of elastic ferrule 6 is hollow cylindrical bodys, and this hollow cylinder radially has two elongated slots at least along an end, and an end of fluting has the surperficial 6a of ring, and the conical surface 5a of this toroidal surface 6a and slide bar is tangent.Elastic ferrule 6 is fixed in the housing 2, can not move axially.Housing inner chamber 2a is equipped with lubricant oil, and slide bar 5 is immersed in the lubricant oil with the toroidal surface 6a of elastic ferrule.
Being in the high-pressure fluid medium that bears in the Pneumatic gate valve of closed condition acts on the elastic sealing gasket 4 by joint endoporus 3a, be delivered to slide bar 5 by elastic sealing gasket 4, force slide bar 5 moving axially along slide bar, owing to be subjected to stopping of elastic ferrule toroidal surface 6a, slide bar conical surface 5a will act on the last power F of elastic ferrule toroidal surface 6a, as shown in Figure 2, the component F that directly makes progress at elastic ferrule of this power
rMake the outside distending of toroidal surface of elastic ferrule fluting, and can make elastic ferrule toroidal surface 6a produce rolling along slide bar conical surface 5a.When in the pressure range that limits, working, the pressure of flowing medium makes slide bar conical surface 5a that elastic ferrule toroidal surface 6a can only be made limited distending, thereby the big end 5b of the slide bar conical surface can not be by elastic ferrule toroidal surface 6a, slide bar 5 can only have and small move axially and have the axially movable trend of generation.When the pressure that flowing medium occurs slightly surpasses limit value, the feasible radial component F that acts on the elastic ferrule toroidal surface 6a of this pressure
rQuite big, be enough to allow the big end 5b of the slide bar conical surface pass through with the elastic ferrule toroidal surface 6a that causes distending, in this moment, because slide bar 5 suffered axial resistances reduce suddenly, slide bar 5 will produce " explosion type " in cutting ferrule toroidal surface 6a slippage, promoting spool 7 rapidly moves up, realize noted earlier " when the pressure that is born when the pneumatic high-voltage gate valve of closing surpasses limit value; slide bar 5 will promote spool 7 and move; be adjacent on plug 13 until sealing gasket 9; the A mouth on this moment cylinder body 10 is closed and died, and the B mouth on the cylinder body 10 communicates cylinder air feeding apparatus 23 with the C mouth simultaneously; the 24 C mouths of gas by cylinder body 10 of controlling in the gas circuits enter atmosphere.Because cylinder air feeding apparatus 23,24 does not have control gas, air feeding apparatus 23 makes the 20a exhaust of cylinder piston top, and air feeding apparatus 24 makes cylinder piston 20b air inlet, and cylinder piston 20 is up, drives flashboard 19 and moves up, and opens the pressure release of pneumatic high-voltage gate valve.When the elastic ferrule 6 of adapted different size, can limit the pressure of different brackets.After the downward suitably application of force of the upper end of spool 7 7a, spool 7 can be got back to the position before moving, and the pneumatic high-voltage gate valve returns to the working state before the superpressure.
Automatic control overpressure protection pneumatic high-voltage gate valve has the following advantages:
1. Chang Gui safety valve work, flowing medium must be through the dedicated channel pressure release of safety valve inside during superpressure.Use this automatic control overpressure protection pneumatic high-voltage gate valve, by the Pneumatic gate valve and the pipeline pressure release of normal running use.
2. because the isolation of elastic sealing gasket 4, crucial pressure control valve slide bar 5 does not contact with working medium with elastic ferrule 6, avoided the influence such as burn into bonding, erosion of working medium to them, except pressure, working medium does not exert an influence to the performance of these pressure control valves.
3. when pressure medium is zero, there is not precompression between slide bar conical surface 5a and the elastic ferrule toroidal surface 6a.When medium had variation in pressure, toroidal surface 6a can roll along conical surface 5a, has reduced the influence of frictional force between them.Because they are immersed in the lubricant oil, but the reliable working state of stable for extended periods of time.
4. after the superpressure pressure release, system pressure reduces to zero, it is resetted need only for downward power of spool upper end 7a.Can recover the preceding working state of pressure release, need not change easily damaged parts, can save when boring.
5. the pressure control valve on the pneumatic high-voltage gate valve can also be controlled other pneumatic mechanism, or realizes telecontrol.
Fig. 1: " automatic control overpressure protection " part of automatic control overpressure protection pneumatic high-voltage gate valve.
Fig. 2: the partial enlarged drawing when slide bar conical surface 5a contacts with elastic ferrule toroidal surface 6a.
Fig. 3: automatic control overpressure protection pneumatic high-voltage gate valve.
Fig. 4: the operation of automatic control overpressure protection pneumatic high-voltage gate valve and control pneumatic diagram.
Fig. 5: the control pneumatic diagram the when deputy driller of drilling crew operates.
Fig. 6: the control pneumatic diagram when driller of drilling crew or deputy driller all can operate.
Fig. 5, Fig. 6 have described embodiment that the utility model is used for the oil drilling slurry high pressure pipe joint.
Be installed on the position of " putting back to Water gate valve " in the oil drilling high-pressure slurry manifold gate valve group with this automatic control overpressure protection pneumatic high-voltage gate valve; the control gas circuit that in its control gas circuit, connects slurry pump gas clutch; unlatching pressure release of automatic control overpressure protection pneumatic high-voltage gate valve and slurry pump quit work and carry out simultaneously when superpressure, realize the working method of dual security protection.Operate this pneumatic high-voltage gate valve and slurry pump gas clutch can have dual mode:
1. by the deputy driller of drilling crew operation, as shown in Figure 5.When mud pressure was in restricted portion, A mouth and B mouth are connected in the machine control selector valve 21 control gas.When selector valve 22 disconnected control gas, air feeding apparatus 23,24 can make Pneumatic gate valve cylinder piston 20 up, opened gate valve; When selector valve 26 disconnected the control gas, air feeding apparatus 27 can make 28 venting of slurry pump gas clutch, pluck from.When connecting the control gas of selector valve 22,26, air feeding apparatus 23,24,27 can make Pneumatic gate valve cylinder piston 20 descending closing gate valves; 28 inflations of slurry pump gas clutch are hung and are closed, and slurry pump is started working.The superpressure situation appears when slurry pump is worked, because the promotion of pressure control valve slide bar 5.The position of change machine control selector valve 21 is closed the A mouth of machine control selector valve 21, and the B mouth communicates with the C mouth, and the control gas of former B mouth enters atmosphere by the C mouth, owing to there is not control gas, air feeding apparatus 23,24 makes cylinder piston 20 up, opens the gate valve pressure release; Meanwhile air feeding apparatus 27 make slurry pump gas clutch 28 venting pluck from, slurry pump quits work.
2. all can be operated by driller of drilling crew or deputy driller, its gas circuit is controlled as shown in Figure 6, and it is the selector valve 29 that has increased driller's operation on the basis of Fig. 5.Wherein deputy driller's operative section as described in example 1 above.When the driller operated, selector valve 22 and 26 was all pulled and is connected the gas circuit position, and when valve 29 was not connected gas circuit, air feeding apparatus 23,24,27 did not all have control gas, and this will make Pneumatic gate valve cylinder piston 20 up, and gate valve is opened; Slurry pump gas clutch 28 venting are simultaneously plucked from, mud air pump inoperative.When valve 29 was in connection gas circuit position, air feeding apparatus 23,24,27 had control gas, and this will make that cylinder piston 20 is descending, closing gate valve; Slurry pump gas clutch 28 inflations are simultaneously hung and are closed, and slurry pump is started working.When the superpressure situation occurring, the situation of change of control gas is identical with situation described in the embodiment 1.
Claims (3)
1, a kind of automatic control overpressure protection pneumatic high-voltage gate valve especially for the automatic control overpressure protection pneumatic high-voltage gate valve in the drilling well high-pressure slurry manifold, is applicable to frequent operation and can carries out complete pressure release automatically when high-pressure fluid medium pressure surpasses limit value.The bottom of existing pneumatic high-voltage gate valve is valve body and valve gap, and valve plate in valve body and spool are salable after fitting, and connects with stem lower portion; The top of pneumatic high-voltage gate valve is cylinder and cylinder cap, and piston in the cylinder and valve rod top connect; Fix with fastening piece between them and corresponding Sealing arranged.Feature of the present utility model is: on the valve gap 1 of automatic control overpressure protection pneumatic high-voltage gate valve pressure-bearing, the pressure control valve that control automatic control overpressure protection pneumatic high-voltage gate valve is opened is housed: joint 3, elastic sealing gasket 4, slide bar 5, elastic ferrule 6, housing 2 when superpressure.Its middle joint 3 endoporus 3a directly communicate with valve gap 1 inner chamber 1a; Use scyewed joint between joint 3 and the housing 2; Slide bar 5 and elastic ferrule 6 are housed in the endoporus 2a of housing 2.
2, automatic control overpressure protection pneumatic high-voltage gate valve as claimed in claim 1; it is characterized in that controlling slide bar 5 axially movable is the elastic ferrule 6 that at one end radially has two elongated slots at least; one end of elastic ferrule 6 flutings has toroidal surface 6a; and tangent with the conical surface 5a of slide bar 5, this toroidal surface 6a and conical surface 5a are immersed in the lubricant oil.
3, automatic control overpressure protection pneumatic high-voltage gate valve as claimed in claim 1, but its feature also is to be equipped with between joint 3 and the slide bar 5 elastic sealing gasket 4 of a breathing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86205569 CN86205569U (en) | 1986-08-08 | 1986-08-08 | Self-controlled antioverpressure pneumatic high-pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86205569 CN86205569U (en) | 1986-08-08 | 1986-08-08 | Self-controlled antioverpressure pneumatic high-pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86205569U true CN86205569U (en) | 1988-04-20 |
Family
ID=4808390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86205569 Withdrawn CN86205569U (en) | 1986-08-08 | 1986-08-08 | Self-controlled antioverpressure pneumatic high-pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86205569U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319601A (en) * | 2011-10-10 | 2012-01-18 | 沈阳重型机械集团有限责任公司 | Dust discharge pipeline sealing device of steel scrap crushing machine |
| CN107084277A (en) * | 2017-06-30 | 2017-08-22 | 江苏瑞朗博机械设备有限公司 | The buffering type pilot automatic valve triggered based on strut buckling |
| CN113944437A (en) * | 2021-12-20 | 2022-01-18 | 纬达石油装备有限公司 | High-pressure mud manifold and using method thereof |
-
1986
- 1986-08-08 CN CN 86205569 patent/CN86205569U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319601A (en) * | 2011-10-10 | 2012-01-18 | 沈阳重型机械集团有限责任公司 | Dust discharge pipeline sealing device of steel scrap crushing machine |
| CN102319601B (en) * | 2011-10-10 | 2013-08-28 | 沈阳重型机械集团有限责任公司 | Dust discharge pipeline sealing device of steel scrap crushing machine |
| CN107084277A (en) * | 2017-06-30 | 2017-08-22 | 江苏瑞朗博机械设备有限公司 | The buffering type pilot automatic valve triggered based on strut buckling |
| CN107084277B (en) * | 2017-06-30 | 2019-05-21 | 江苏瑞朗博机械设备有限公司 | Buffering type pilot automatic valve based on strut buckling triggering |
| CN113944437A (en) * | 2021-12-20 | 2022-01-18 | 纬达石油装备有限公司 | High-pressure mud manifold and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |