CN204646166U - A kind of well mouth oil pipe plugging device - Google Patents
A kind of well mouth oil pipe plugging device Download PDFInfo
- Publication number
- CN204646166U CN204646166U CN201520173397.4U CN201520173397U CN204646166U CN 204646166 U CN204646166 U CN 204646166U CN 201520173397 U CN201520173397 U CN 201520173397U CN 204646166 U CN204646166 U CN 204646166U
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- spring
- polished rod
- rod connector
- valve
- hole
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Abstract
The utility model discloses a kind of well mouth oil pipe plugging device, comprise polished rod connector and sucker rod connector, polished rod connector and sucker rod connector are provided with axial central through hole, tapping pin formula one way valve is provided with in the axial central through hole of described polished rod connector, described tapping pin formula one way valve comprises spring base, spool, valve rod and valve seat, and described spring comprises the first spring and the second spring; The length of the first spring is less than the length of the second spring; Valve rod arranges cylindrical compression block near one end of polished rod connector port; Second radial direction through hole place arranges flow transmitter; Also comprise controller, alarm unit; The utility model substantially prolongs the application life of well mouth oil pipe plugging device, and after polished rod is threaded into the polished rod connector of well mouth oil pipe plugging device, the valve rod of tapping pin formula one way valve and valve seat can effectively be opened.
Description
Technical field
The present invention relates to a kind of well mouth oil pipe plugging device, be specially a kind of oilfield pump detection and workover well mouth oil pipe plugging device, belong to oil exploration equipment technical field.
Background technology
The high oil well of oil-gas ratio, before pump detection and workover, owing to having solution gas in tubing string, causes after bleeding off pressure dismounting well head, and when not dynamic tubing string deblocking tubing anchor pressure release, well head constantly outside oil spilling gas, cannot carry out normal oil well pump detection and workover.Invention and created name is: well mouth oil pipe plugging device, and the patent No. is: the device that the patent of 2014200925879 proposes solves above problem, and prior art as shown in Figure 1.
When installing well head oil line stopper, owing to having solution gas in down-hole oil tube, well head is outside oil spilling gas constantly.Therefore, first change polished rod seal apparatus with pressure, current wellhead polish rod sealed packing box is replaced by major path polished rod sealer, so just can close oil gas with pressure in oil pipe, then with tool of unloading, rod weight is transferred on polished rod sealer, the connection of polished rod and sucker rod is dismantled, well mouth oil pipe plugging device can be mounted between sucker rod and polished rod, then sucker rod and well mouth oil pipe plugging device are lowered in pit shaft oil pipe.After polished rod is threaded into well mouth oil pipe plugging device polished rod connector, polished rod presses down the valve rod of tapping pin formula one way valve, the valve rod of tapping pin formula one way valve and valve seat are opened, the input of tapping pin formula one way valve is communicated with between output, make the well mouth oil pipe plugging device top and the bottom pressure balance in oil pipe, make polished rod, well mouth oil pipe plugging device and sucker rod descending smoothly.After the plunger be connected when sucker rod bottom contacts with deep well working barrel, rod weight and load are all transferred on oil pipe, just can unload polished rod.After polished rod unloads, under spring force, valve rod and valve seat close sealing to tapping pin formula one way valve, now seal between the input of tapping pin formula one way valve and output.Oil pipe passage all blocks by well mouth oil pipe plugging device; Propose the pressure release of downhole oil tubing string deblocking oil pipe anchoring apparatus on after dismantling wellhead assembly when constructor constructs, just can carry out the construction of inspection pump.
Well mouth oil pipe plugging device Long-Time Service can cause the coefficient of elasticity of the spring on valve rod to change, cause the position of possibility valve rod movement after polished rod is threaded into well mouth oil pipe plugging device polished rod connector limited, and the valve rod of tapping pin formula one way valve and valve seat are not effectively opened.
Summary of the invention
The object of the present invention is to provide a kind of well mouth oil pipe plugging device, mainly solve following technical problem: well mouth oil pipe plugging device Long-Time Service can cause the elasticity generation deformation of the spring on valve rod, cause the position of possibility valve rod movement after polished rod is threaded into well mouth oil pipe plugging device polished rod connector limited, and the valve rod of tapping pin formula one way valve and valve seat are not effectively opened.
In order to realize above object, technical scheme of the present invention is as follows: a kind of well mouth oil pipe plugging device, comprise polished rod connector and sucker rod connector, polished rod connector and sucker rod connector are provided with axial central through hole, be threaded between polished rod connector and sucker rod connector, the outer end of polished rod connector is provided with the internal thread for connecting polished rod, the outer end of described sucker rod connector is provided with the internal thread for connecting with pumping rod, and the periphery of described sucker rod connector is fixedly installed one or more cone seal rubber bowl successively, tapping pin formula one way valve is provided with in the axial central through hole of described polished rod connector, described tapping pin formula one way valve comprises spring base, spool, valve rod and valve seat, spring base is arranged in the axial central through hole of polished rod connector, spring base is provided with axial center hole, described spool is arranged on valve rod, one end of valve rod is placed through in the axial center hole of spring base slidably, valve rod between spring base and spool has placed spring, the valve seat coordinated with spool is provided with in the axial central through hole of the polished rod connector outside described spring base, tapping pin formula one way valve is connected by the one end connecting polished rod at polished rod connector or is unloaded the switch that the change in displacement of polished rod with ovable valve stem controls tapping pin formula one way valve, sucker rod connector is provided with the radial direction through hole be connected with the input of tapping pin formula one way valve, described polished rod connector is provided with the radial direction through hole be connected with the output of tapping pin formula one way valve, it is characterized in that, described spring comprises the first spring and the second spring, the length of the first spring is less than the length of the second spring, and the first spring and the second spring are all placed through on the valve rod between spring base and spool, valve rod arranges cylindrical compression block near one end of polished rod connector port, second radial direction through hole place arranges flow transmitter, also comprise controller, alarm unit, flow transmitter is electrically connected with controller, and alarm unit is electrically connected with controller.
Further, described alarm unit adopts buzzer warning module.
Further, the first described spring is identical with the coefficient of elasticity of the second spring.
Compared with prior art, beneficial effect of the present invention: first, well mouth oil pipe plugging device Long-Time Service can cause the coefficient of elasticity of the spring on valve rod to change, cause the position of possibility valve rod movement after polished rod is threaded into the polished rod connector of well mouth oil pipe plugging device limited, and the valve rod of tapping pin formula one way valve and valve seat are not effectively opened, the present invention is by arranging the first spring and the second spring, after the coefficient of elasticity of the second spring changes, the first spring starts to play a role, substantially prolongs the application life of well mouth oil pipe plugging device like this, after polished rod is threaded into the polished rod connector of well mouth oil pipe plugging device, the valve rod of tapping pin formula one way valve and valve seat can effectively be opened.Second; Be equivalent to reduce because valve rod to arrange cylindrical compression block near one end of polished rod connector port the distance that polished rod moves down.If do not arrange cylindrical compression block, when the deformation due to the second spring may cause polished rod to screw in, the valve rod of tapping pin formula one way valve and valve seat still fail effectively to open.3rd, second radial direction through hole place arranges flow transmitter for detecting valve rod and whether valve seat is opened, controller is once detect that valve rod and valve seat are opened, immediately control honey device alarm module to report to the police, at this time polished rod stops moving down at once again, if do not arrange flow transmitter, polished rod continues downward screw-in and very likely causes the first spring and the second camber of spring, also may damage tapping pin formula one way valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Fig. 2 is the schematic diagram that the present invention first spring and the second spring are arranged.
Fig. 3 is the schematic diagram that valve rod of the present invention and cylindrical compression block are arranged.
Fig. 4 is circuit part principle schematic of the present invention.
Wherein, 1 is polished rod connector; 2 is sucker rod connectors; 3 is axial central through hole; 4 is first tube connectors; 5 is second tube connectors; 6 is cone seal rubber bowls; 7 is tapping pin formula one way valves; 8 is spring bases; 9 is spools; 10 is valve rods; 11 is valve seats; 12 is springs; 13 is first radial direction through hole; 14 is second radial direction through hole; 15 is first springs; 16 is second springs; 17 is valve rods; 18 is cylindrical compression blocks.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment: see Fig. 1,2,3,4, a kind of well mouth oil pipe plugging device, comprise polished rod connector and sucker rod connector, polished rod connector and sucker rod connector are provided with axial central through hole, be threaded between polished rod connector and sucker rod connector, the outer end of polished rod connector is provided with the internal thread for connecting polished rod, the outer end of described sucker rod connector is provided with the internal thread for connecting with pumping rod, and the periphery of described sucker rod connector is fixedly installed one or more cone seal rubber bowl successively, tapping pin formula one way valve is provided with in the axial central through hole of described polished rod connector, described tapping pin formula one way valve comprises spring base, spool, valve rod and valve seat, spring base is arranged in the axial central through hole of polished rod connector, spring base is provided with axial center hole, described spool is arranged on valve rod, one end of valve rod is placed through in the axial center hole of spring base slidably, valve rod between spring base and spool has placed spring, the valve seat coordinated with spool is provided with in the axial central through hole of the polished rod connector outside described spring base, tapping pin formula one way valve is connected by the one end connecting polished rod at polished rod connector or is unloaded the switch that the change in displacement of polished rod with ovable valve stem controls tapping pin formula one way valve, sucker rod connector is provided with the radial direction through hole be connected with the input of tapping pin formula one way valve, described polished rod connector is provided with the radial direction through hole be connected with the output of tapping pin formula one way valve, described spring comprises the first spring and the second spring, the length of the first spring is less than the length of the second spring, and the first spring and the second spring are all placed through on the valve rod between spring base and spool, valve rod arranges cylindrical compression block (if do not arrange cylindrical compression block near one end of polished rod connector port, when polished rod has arrived the position that can not screw in again downwards, second spring is not also compressed, and causes valve rod and valve seat cannot open always), second radial direction through hole place arranges flow transmitter, also comprise controller, alarm unit, flow transmitter is electrically connected with controller, and alarm unit is electrically connected with controller.
Wherein, described alarm unit adopts buzzer warning module.The first described spring is identical with the coefficient of elasticity of the second spring.Controller adopts MSP430 single-chip microcomputer.Cylindrical compression block adopts elastomeric material to prepare exactly.
Operating principle of the present invention describes: if be only provided with the second spring, after polished rod is threaded into well mouth oil pipe plugging device polished rod connector, polished rod presses down the valve rod of tapping pin formula one way valve, owing to being only provided with the second spring and the coefficient of elasticity of Long-Time Service second spring diminishes, when will make like this to press down, the valve rod of tapping pin formula one way valve and valve seat are not opened.Present invention employs the first spring and the parallel connection of the second spring, add coefficient of elasticity; When polished rod is threaded into well mouth oil pipe plugging device polished rod connector, be equivalent to reduce because valve rod to arrange cylindrical compression block near one end of polished rod connector port the distance that polished rod moves down.Whether the second radial direction through hole place arranges flow transmitter and opens owing to detecting valve rod and valve seat, controller is once detect that valve rod and valve seat are opened, immediately control honey device alarm module to report to the police, after operating personnel hear and report to the police, polished rod stops moving down at once again, and if cylindrical compression block is not set, may valve rod and valve seat still cannot be made to open even if polished rod has screwed in, if add cylindrical compression block and do not arrange flow transmitter, polished rod continues downward screw-in and very likely causes the first spring and the second camber of spring, also tapping pin formula one way valve may be damaged.Therefore flow transmitter and cylindrical compression block must be arranged simultaneously.
Claims (3)
1. a well mouth oil pipe plugging device, comprise polished rod connector and sucker rod connector, polished rod connector and sucker rod connector are provided with axial central through hole, be threaded between polished rod connector and sucker rod connector, the outer end of polished rod connector is provided with the internal thread for connecting polished rod, the outer end of described sucker rod connector is provided with the internal thread for connecting with pumping rod, and the periphery of described sucker rod connector is fixedly installed one or more cone seal rubber bowl successively, tapping pin formula one way valve is provided with in the axial central through hole of described polished rod connector, described tapping pin formula one way valve comprises spring base, spool, valve rod and valve seat, spring base is arranged in the axial central through hole of polished rod connector, spring base is provided with axial center hole, described spool is arranged on valve rod, one end of valve rod is placed through in the axial center hole of spring base slidably, valve rod between spring base and spool has placed spring, the valve seat coordinated with spool is provided with in the axial central through hole of the polished rod connector outside described spring base, tapping pin formula one way valve is connected by the one end connecting polished rod at polished rod connector or is unloaded the switch that the change in displacement of polished rod with ovable valve stem controls tapping pin formula one way valve, sucker rod connector is provided with the first radial direction through hole be connected with the input of tapping pin formula one way valve, described polished rod connector is provided with the second radial direction through hole be connected with the output of tapping pin formula one way valve, it is characterized in that, described spring comprises the first spring and the second spring, the length of the first spring is less than the length of the second spring, and the first spring and the second spring are all placed through on the valve rod between spring base and spool, valve rod arranges cylindrical compression block near one end of polished rod connector port, second radial direction through hole place arranges flow transmitter, also comprise controller, alarm unit, flow transmitter is electrically connected with controller, and alarm unit is electrically connected with controller.
2. a kind of well mouth oil pipe plugging device according to claim 1, is characterized in that, described alarm unit adopts buzzer warning module.
3. a kind of well mouth oil pipe plugging device according to claim 1, is characterized in that, the first described spring is identical with the coefficient of elasticity of the second spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173397.4U CN204646166U (en) | 2015-03-25 | 2015-03-25 | A kind of well mouth oil pipe plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173397.4U CN204646166U (en) | 2015-03-25 | 2015-03-25 | A kind of well mouth oil pipe plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646166U true CN204646166U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520173397.4U Expired - Fee Related CN204646166U (en) | 2015-03-25 | 2015-03-25 | A kind of well mouth oil pipe plugging device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204646166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727771A (en) * | 2015-03-25 | 2015-06-24 | 江苏柯沣石化机械有限公司 | Wellhead oil tube plugging device |
-
2015
- 2015-03-25 CN CN201520173397.4U patent/CN204646166U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727771A (en) * | 2015-03-25 | 2015-06-24 | 江苏柯沣石化机械有限公司 | Wellhead oil tube plugging device |
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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 |
Granted publication date: 20150916 Termination date: 20170325 |
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| CF01 | Termination of patent right due to non-payment of annual fee |