CN203614079U - Circulating bottom valve operated under pressure - Google Patents
Circulating bottom valve operated under pressure Download PDFInfo
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- CN203614079U CN203614079U CN201320697225.8U CN201320697225U CN203614079U CN 203614079 U CN203614079 U CN 203614079U CN 201320697225 U CN201320697225 U CN 201320697225U CN 203614079 U CN203614079 U CN 203614079U
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Abstract
The utility model relates to a circulating bottom valve operated under pressure. A shell of a valve body is formed by sequentially connecting an upper joint, a main body pipe, a reversing joint and a load shedding valve. The main body pipe is provided with an outer valve clack, an inner valve clack and a spindle. The outer valve clack and the inner valve clack are provided with outer clack guide pins and guide ribs. Spindle positioning bolts are formed on the spindle to limit the movement of the spindle. A lower valve clack, the tip of the load shedding valve and a test joint are arranged in the load shedding valve. The lower valve clack is provided with a lower valve clack guide rib; the outer wall at the lower end of the spindle is provided with a rail reversing groove; the rail reversing groove is composed of an upper limiting groove, a long lower limiting groove, an upper limiting groove and a short lower limiting groove which are arrayed in a circular way along the horizontal direction. A reversing ring is provided with reversing positioning pins which extend into the rail reversing groove; the reversing positioning pins control the movement of the spindle inside the reversing joint. The valve has the function of preventing spraying under wells, transferring coming water, washing wells in a reverse circulation way and preventing spraying under re-operation, and is simple and reliable in process, and convenient to operate on site.
Description
Technical field
The utility model relates to a kind of oil gas, water injection well underground operation tool, blowout prevention the complete sets of equipment in a kind of completion, blowout prevention letting-in tool in a kind of Operating Pressure, especially a kind of Operating Pressure circulation bottom valve.
Background technology
In well workover, completion and Operating Pressure, carry out well control work and both can reduce the destruction to oil-gas Layer, can prevent again well kick and blowout out of control, when former operation, with a large amount of well killing fluid kill-jobs, the residual pressure of down-hole is everlasting in operation with potential safety hazard; Bleed off pressure at well head if adopted, often have that sewage reclaims, periphery oil-well strata energy decreases and cause the underproduction, the complete renwing stratum again of operation energy is the time-consuming expense that increased again not only.At present, the universal and utility ratio of Oil/gas Well operation with pressure has obtained significant growth, carries out Oil/gas Well operation with pressure on ground, and its advantage is not use well killing fluid to carry out operation, thereby has eliminated the Latent destruction of pressure liquid for payzone.Tail pipe is controlled reliably, the circulation of control medium, guaranteed Operating Pressure safely, alleviate operating worker difficulty of construction, reduce operating cost can prevent the environment to well site.
Diversity, the complexity of oil production technology completion tubular column have been brought very large difficulty to well workover, completion and Operating Pressure.
Before in pumpingh well (insert pump) Operating Pressure process, conventionally use actuating oil-pumping unit equipment, its problem has: when actuating oil-pumping unit, easily produce flexible bending, normally remove difficulty large; Some oil wells sucker rod is with wiper block, paraffin scraper; Tubing string annular space effective sealing difficulty is large; On moment solution gas, alter, gas liquid ratio changes greatly, and Operating Pressure sealing and manipulation difficulty are large; In high solidifying oil, high wax containing well Operating Pressure tubing string, stop up difficulty large; All need ground blowout preventer of sucker rod because every sucker rod removes, exist the problem that the activity duration is long, efficiency is slow, operation intensity is large, cost is high.
In pumpingh well (electric pump well) Operating Pressure process, its problem has: irregular tubing string is difficult to realize control sealing; Manage armoured cable and be difficult to realize movable sealing; Electric Submersible Pump Unit is difficult to seal by blowout preventer set process;
The tail pipe of machine-pumped oil well is all provided with single current valve, cannot control well fluids downhole circulation by control oil pipe internal pressure.And in rod pumping well casing, there is sucker rod and cannot adopt the measure of stopping up in pipe; The irregular tubing string of electric pump well is realized and is controlled difficult sealing, manages armoured cable and cannot realize movable sealing, and Electric Submersible Pump Unit is by the problem of blowout preventer set process difficult sealing.
Utility model content
The technical problems to be solved in the utility model: for the deficiencies in the prior art, the utility model proposes a kind of Operating Pressure circulation bottom valve, in solution prior art, the blanking plug delivery difficulty of Operating Pressure tail pipe obstruction technique is large, one-time success rate is low, and grow and operating cost high-technology problem duty cycle.
The technical solution of the utility model: a kind of Operating Pressure circulation bottom valve, described circulation bottom valve is connected and composed from top to bottom successively by top connection, main body tube, commutation joint and load releasing valve; Described top connection is that hollow tube, upper end are processed with the connecting screw hole being connected with oil pipe afterbody;
Described main body tube is hollow tube, inside is shunk main body tube is divided into first order positioning step latus rectum by twice notch cuttype from top to bottom, second level positioning step latus rectum and third level positioning step latus rectum, main body tube first order positioning step latus rectum top is provided with outer flap, described outer flap top is provided with and the top connection bottom through-hole step that matches, for sealing the through hole of top connection bottom, outer flap step lower end is cylinder, outer flap cylindrical body outer wall top is provided with the outer flap guiding rib with main body tube first order positioning step latus rectum corresponding size, outer flap outer wall is arranged with MEDIA FLOW to passage in outer flap guiding rib, in outer flap, be also provided with the cavity under shed, outer flap cavity lower inner wall is provided with the screw thread being connected with mandrel, described interior flap is arranged in outer flap cavity, interior flap is connected by outer flap guide finger with outer flap, interior flap outer wall bottom is provided with the interior flap guiding rib matching with outer flap cavity internal diameter size, between interior flap and outer flap, be provided with back-moving spring, interior flap bottom is and step, described step and mandrel internal diameter size match, be used for sealing mandrel latus rectum,
On described mandrel outer wall, is furnished with mandrel dog screw, mandrel dog screw mates with the size of main body tube second level positioning step latus rectum, the outside diameter of mandrel of mandrel dog screw below mates with the internal diameter of main body tube second level positioning step latus rectum, and mandrel dog screw lower end is provided with support spring to the mandrel outer wall between the positioning step of the second level;
Described commutation joint bottom is provided with sieve aperture, in load releasing valve, be provided with lower Disc, in lower Disc, be provided with the cavity of upward opening, commutation joint bottom is connected by guide finger with lower Disc cavity, lower Disc bottom outer wall is provided with the lower Disc guiding rib with load releasing valve internal diameter corresponding size, between commutation joint bottom and lower Disc, be also provided with lower Disc back-moving spring, load releasing valve lower end is provided with load releasing valve valve point interface and test interface, load releasing valve valve point interface and test interface form limited step restriction lower Disc stroke, load releasing valve valve point interface connects load releasing valve valve point, on load releasing valve valve point, there is load releasing valve adjusting rod, between load releasing valve valve point and load releasing valve adjusting rod, be provided with load releasing valve valve point back-moving spring,
On the outer wall of mandrel lower end, be also provided with track reversing groove, described track reversing groove is formed by the two rows right angle tooth cycle alternation arrangement being opened on the outer wall of mandrel lower end, between the right-angle side of the hypotenuse of the each right angle of tooth, described upper row right angle tooth and adjacent right angle tooth, have the upper limit groove that the degree of depth is consistent, between the right-angle side of the hypotenuse of each right angle tooth of described lower row right angle tooth and adjacent right angle tooth, also have lower limit groove, described lower limit groove comprises long lower limit groove and short lower limit groove, and both are opened on the outer wall of mandrel lower end and are interspersed; Main body tube is also provided with commutative ring with commutation joint junction, and commutative ring can horizontally rotate, and is provided with commutation shop bolt on commutative ring, and described commutation shop bolt is embedded in limited impression.
As preferably, limited impression on mandrel and commutative ring contact surface is upper limit groove, long lower limit groove and short lower limit groove, and mandrel moves up and down and drives commutation shop bolt between limited impression upper limit groove, long lower limit groove and short lower limit groove, changing, controlling the stroke of mandrel in commutation joint.
As preferably, outside the junction of top connection and main body tube, main body tube and mandrel junction, in the junction periphery of the junction of flap and mandrel, main body tube and commutation joint and the junction of commutation joint and load releasing valve is equipped with seal.
As preferably, described top connection and main body tube junction, commutation joint and main body tube junction and commutate joint and load releasing valve junction are equipped with holding screw.
As preferably, described commutation joint bottom is provided with sieve aperture, in the load releasing valve of commutation joint bottom, be provided with lower Disc, (top is provided with the cavity of upward opening to lower Disc, commutation joint bottom is connected by guide finger with load releasing valve, guide finger is positioned at lower Disc cavity top, lower Disc bottom outer wall is provided with the lower Disc guiding rib with load releasing valve internal diameter corresponding size, on guide finger, cover has lower Disc back-moving spring, lower Disc bottom is provided with limited step, on limited step, be provided with valve point and be communicated with interface and test connection interface, on limited step, form limited step restriction lower Disc stroke, load releasing valve valve point is communicated with interface and test connection interface is to connect with commutation joint bottom in the time moving on lower Disc limited step, valve point is communicated with interface and connects load releasing valve valve point, on load releasing valve valve point, there is load releasing valve adjusting rod, between valve point and load releasing valve adjusting rod, be provided with load releasing valve valve point back-moving spring.
As preferably, described commutation shop bolt matches with the quantity of long lower limit groove.
Beneficial effect: (1) the utility model can be by top under tubing string tail pipe fish head or to the mandrel transposition that increases pressure in tubing string and realize entirety transposition spool, go into the well after blowout prevention, commutation production operation and remake the function of industry blowout prevention of realization guarantees that lower subjob plays the blowout prevention under plumber's condition simultaneously; (2) this valve arrangement is simple, and spool transposition is reliable, reusable, greatly reduces cost, can also simplify endoporus shutoff program at the bottom of next well in operation, reduces operating cost; (3) this valve is applicable to multilayer injector, dispensing well, oil gas flowing well and machine-pumped oil well etc., and construction technology is simple, safe and reliable, and execute-in-place is convenient; (4) adopting Operating Pressure circulation bottom valve is replaceable single current valve, realizes oil pipe inner fluid and two-way circulates.Abandon in original oil pipe and throw stifled mode, realize sealing in the shaft bottom oil pipe with sucker rod oil well.(5) this valve can realize Operating Pressure oil pipe column rise, under, guarantee the safety of Operating Pressure, alleviate operating worker difficulty of construction, effectively prevent well site to cause environment pollution, avoid use well killing fluid to carry out operation, thereby eliminated pressure liquid for the Latent destruction of payzone and the potential safety hazard of operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the utility model oil pressure is to bottom dead centre state diagram to be commutated;
Fig. 3 is can production status figure after the utility model mandrel commutation;
Fig. 4 gets tubing string blowout prevention after the utility model mandrel commutates again or tubing string enters well blowout prevention state diagram;
Fig. 5 is that the utility model track reversing groove launches schematic diagram.
The specific embodiment
With reference to the accompanying drawings the utility model is further detailed
As shown in Figure 1: a kind of Operating Pressure circulation bottom valve, is characterized in that: described circulation bottom valve is connected and composed from top to bottom successively by top connection 1, main body tube 2, commutation joint 3 and load releasing valve 4; Described top connection 1 is that hollow tube, upper end are processed with the connecting screw hole being connected with oil pipe afterbody;
Described main body tube 2 is hollow tube, inside is shunk main body tube 2 is divided into first order positioning step latus rectum by twice notch cuttype from top to bottom, second level positioning step latus rectum and third level positioning step latus rectum, main body tube 2 first order positioning step latus rectum tops are provided with outer flap 8, described outer flap 8 tops are provided with and the top connection 1 bottom through-hole step that matches, for sealing the through hole of top connection 1 bottom, outer flap 8 step lower ends are cylinder, outer flap 8 cylindrical body outer wall tops are provided with the outer flap guiding rib 5 with main body tube 2 first order positioning step latus rectum corresponding sizes, outer flap 8 outer walls are arranged with MEDIA FLOW to passage 7 in outer flap guiding rib 5, in outer flap 8, be also provided with the cavity under shed, outer flap 8 cavity lower inner wall are provided with the screw thread being connected with mandrel 6, described interior flap 12 is arranged in outer flap 8 cavitys, interior flap 12 is connected by outer flap guide finger 10 with outer flap 8, interior flap 12 outer wall bottoms are provided with the interior flap guiding rib 11 matching with outer flap 8 cavity internal diameter sizes, between interior flap 12 and outer flap 8, be provided with back-moving spring 9, interior flap 12 bottoms are and step, described step and mandrel 6 internal diameter sizes match, be used for sealing mandrel 6 latus rectums,
On described mandrel 6 outer walls, is furnished with mandrel dog screw 18, mandrel dog screw 18 mates with the size of main body tube 2 second level positioning step latus rectums, mandrel 6 external diameters of mandrel dog screw 18 belows mate with the internal diameter of main body tube 2 second level positioning step latus rectums, and mandrel dog screw 18 lower ends are provided with support spring 15 to mandrel 6 outer walls between the positioning step of the second level;
Described commutation joint 3 bottoms are provided with sieve aperture 17, in load releasing valve 4, be provided with lower Disc 26, in lower Disc 26, be provided with the cavity of upward opening, commutation joint 3 bottoms are connected by guide finger 20 with lower Disc 26 cavitys, lower Disc 26 bottom outer walls are provided with the lower Disc guiding rib 25 with load releasing valve 4 internal diameter corresponding sizes, between commutation joint 3 bottoms and lower Disc 26, be also provided with lower Disc back-moving spring 19, load releasing valve 4 lower ends are provided with load releasing valve valve point interface 22 and test interface 24, load releasing valve valve point interface 22 and test interface 24 form limited step restriction lower Disc 26 strokes, load releasing valve valve point interface 22 connects load releasing valve valve point 21, on load releasing valve valve point 21, there is load releasing valve adjusting rod, between load releasing valve valve point 21 and load releasing valve adjusting rod, be provided with load releasing valve valve point back-moving spring 23,
On mandrel 6 lower end outer walls, be also provided with track reversing groove 14, described track reversing groove 14 is formed by the two rows right angle tooth cycle alternation arrangement being opened on mandrel 6 lower end outer walls, between the right-angle side of the hypotenuse of the each right angle of tooth, described upper row right angle tooth and adjacent right angle tooth, have the upper limit groove that the degree of depth is consistent, between the right-angle side of the hypotenuse of each right angle tooth of described lower row right angle tooth and adjacent right angle tooth, also have lower limit groove, described lower limit groove comprises long lower limit groove and short lower limit groove, both are opened on mandrel 6 lower end outer walls and are interspersed, main body tube 2 is also provided with commutative ring 13 with commutation joint 3 junctions, and commutative ring 13 can horizontally rotate, and is provided with commutation shop bolt 16 on commutative ring 13, and described commutation shop bolt 16 is embedded in limited impression.
Limited impression on mandrel and commutative ring 13 contact surfaces is upper limit groove, long lower limit groove and short lower limit groove, and mandrel 6 moves up and down and drives commutation shop bolt 16 between limited impression upper limit groove, long lower limit groove and short lower limit groove, changing, controlling the stroke of mandrel 6 in commutation joint 3.
Outside junction, main body tube 2 and mandrel 6 junctions of top connection 1 and main body tube 2, in junction, the main body tube 2 of flap 8 and mandrel 6 and the junction periphery of the joint 3 that commutates and the junction of commutate joint 3 and load releasing valve 4 is equipped with seal.
Described top connection 1 is equipped with holding screw with main body tube 2 junctions and commutation joint 3 with load releasing valve 4 junctions with main body tube 2 junctions, commutation joint 3.
Described commutation joint 3 bottoms are provided with sieve aperture 17, in the load releasing valve 4 of commutation joint bottom, be provided with lower Disc 26, lower Disc 26 tops are provided with the cavity of upward opening, commutation joint 3 bottoms are connected by guide finger 20 with load releasing valve, guide finger 20 is positioned at lower Disc 26 cavity tops, lower Disc 26 bottom outer walls are provided with the lower Disc guiding rib 25 with load releasing valve 4 internal diameter corresponding sizes, on guide finger, cover has lower Disc back-moving spring 19, lower Disc 26 bottoms are provided with limited step, on limited step, be provided with valve point and be communicated with interface 22 and test connection interface 24, on limited step, form limited step restriction lower Disc 26 strokes, load releasing valve valve point is communicated with interface 22 and test connection interface 24 is to connect with commutation joint bottom in the time moving on lower Disc 26 limited steps, valve point is communicated with interface 22 and connects load releasing valve valve point 21, on load releasing valve valve point 21, there is load releasing valve adjusting rod, between valve point 21 and load releasing valve adjusting rod, be provided with load releasing valve valve point back-moving spring 23.
Described commutation shop bolt 16 matches with the quantity of long lower limit groove.
Each state when the work of Operating Pressure circulation bottom valve is as follows:
As shown in Figure 1, in the time of the utility model production operation, valve body is lowered into precalculated position, as shown in Figure 2, be depressed into setting pressure or press down valve body by oil pipe fish head by oil pipe forehand, oil pressure promotes outer flap 8 and declines, outer flap 8 promotes mandrel 6 and sinks and compress support spring 15, limited the descending stroke of mandrel 6 by mandrel dog screw 18, commutative ring 13 rotates, commutation shop bolt 16 slides into upper limit groove by the long lower limit groove of track reversing groove 14, at oil pressure, under the elastic force effect of back-moving spring 9 and lower Disc back-moving spring 19, interior flap 12 and lower Disc 26 seal up the one-way sealing sealing of hole of the stepped hole of mandrel 6 sealing surfaces and load releasing valve 4 respectively, valve body is shut, form sealing, when the load releasing valve 4 of setting until pressure to load releasing valve 4 is opened pressure, load releasing valve valve point 21 is backed down, in letting out clearly, flap 12 is to the pressure reduction of 26 of lower Discs, after the commutation pressure that is stabilized to setting until pressure reduction, let out ground oil conduit pressure clearly, now, as shown in Figure 3, entirety transposition spool has commutated, when casing pressure under valve (formation pressure) reaches setting pressure, in promoting, moves on flap 12 oil pressure, sealing is opened, medium flows to interior flap 12 by mandrel 6, the gap of the interior flap guiding rib 11 by interior flap 12 flows into outer flap 8 cavitys, flow to oil pipe to ground by the MEDIA FLOW on outer flap 8 outer walls to passage 7, now support spring 15 returns to passive state, interior flap 12 and lower Disc 26 are backed down, it is compressed that back-moving spring 9 and lower Disc back-moving spring 19 are subject to casing pressure under valve (formation pressure), commutation shop bolt 16 slides into short lower limit groove by upper limit groove,
In the time that oil pressure is balanced, bottom valve returns to predetermined state, as shown in Figure 1, this valve, in lower tubular column process, moves on lower Disc 26, and liquid flows into mandrel 6 by sieve aperture 17, and then on flap 12, move in promoting, open sealing, the back-moving spring 9 in liquid compresses by pressure between flap 12 and outer flap 8, liquid flows between interior flap 12 and outer flap 8, due to ground bottom pressure, outer flap 8 is shut the sealing surface stepped hole of top connection 2, forms sealing, plays blowout prevention effect; While remaking industry blowout prevention, can increase pressure realization by top under tubing string tail pipe fish head or in tubing string, supreme station is carried in entirety transposition, now mentions tubing string, can play the blowout prevention of shutoff endoporus;
Load releasing valve adjusting rod is used for arranging load releasing valve valve point 21 and backs down pressure, and test interface 24 is for testing valve body; This valve can be taken over post afterbody, also can connect the packing of large orifice releasing packer lower end on oil reservoir top.
The utility model solves because the tail pipe of machine-pumped oil well is provided with single current valve, can not realize the problem that oil pipe inner fluid two-way circulates.Adopting Operating Pressure circulation bottom valve is replaceable single current valve, realizes two-way circulating of oil pipe inner fluid; In solution rod pumping well casing, there is sucker rod and cannot adopt the problem of stopping up in oil pipe.Adopt Operating Pressure circulation bottom valve can abandon in original oil pipe and throw stifled mode, realize sealing in the shaft bottom oil pipe with sucker rod oil well; The irregular tubing string that solves electric pump well is realized the problem of controlling sealing, manages armoured cable and cannot realize the problem of dynamic seal (packing), and Electric Submersible Pump Unit by blowout preventer set process difficult sealing with real problem.Adopt oil reservoir top that large orifice releasing packer lower end tape splicing pressure work cycle bottom valve is more first installed, can in sleeve pipe, suppress or thereby tubing string presses down mandrel and makes its commutation close oil reservoir, only need a difficult problem for auxiliary seal thereby solve irregular tubing string by blowout preventer set process without movable sealing and Electric Submersible Pump Unit without realizing controlling sealing or managing armoured cable; In the time of completion, realize the tubing string blowout prevention of going into the well, when well workover and other Operating Pressure techniques, solve tubing string and taken out a difficult problem for blowout prevention; Solve the effectively outer blowout prevention of control oil pipe of preventer, cannot realize a difficult problem for blowout prevention in oil pipe.
A kind of design of Operating Pressure circulation bottom valve is to try every possible means at tail pipe and oil reservoir upper end, simplifies operation technique, and during for expansion Operating Pressure, the diversity of tubing string, complexity should be used as technical preparing.The Application and Development of Operating Pressure circulation bottom valve, can simplify endoporus shutoff at the bottom of next well in operation, reduce operating cost.Operating Pressure circulation bottom valve is the development trend of complicated completion tubular column Operating Pressure technology.
The above is only preferred embodiment of the present utility model; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. an Operating Pressure circulation bottom valve, is characterized in that: described circulation bottom valve is connected and composed from top to bottom successively by top connection (1), main body tube (2), commutation joint (3) and load releasing valve (4); Described top connection (1) is that hollow tube, upper end are processed with the connecting screw hole being connected with oil pipe afterbody;
Described main body tube (2) is hollow tube, inside is shunk main body tube (2) is divided into first order positioning step latus rectum by twice notch cuttype from top to bottom, second level positioning step latus rectum and third level positioning step latus rectum, main body tube (2) first order positioning step latus rectum top is provided with outer flap (8), described outer flap (8) top is provided with and top connection (1) the bottom through-hole step that matches, be used for sealing the through hole of top connection (1) bottom, outer flap (8) step lower end is cylinder, outer flap (8) cylindrical body outer wall top is provided with the outer flap guiding rib (5) with main body tube (2) first order positioning step latus rectum corresponding size, outer flap (8) outer wall is arranged with MEDIA FLOW to passage (7) in outer flap guiding rib (5), outer flap is also provided with the cavity under shed in (8), outer flap (8) cavity lower inner wall is provided with the screw thread being connected with mandrel (6), interior flap (12) is arranged in outer flap (8) cavity, interior flap (12) is connected by outer flap guide finger (10) with outer flap (8), interior flap (12) outer wall bottom is provided with the interior flap guiding rib (11) matching with outer flap (8) cavity internal diameter size, between interior flap (12) and outer flap (8), be provided with back-moving spring (9), interior flap (12) bottom is and step, described step and mandrel (6) internal diameter size matches, be used for sealing mandrel (6) latus rectum,
On described mandrel (6) outer wall, is furnished with mandrel dog screw (18), mandrel dog screw (18) mates with the size of main body tube (2) second level positioning step latus rectum, mandrel (6) external diameter of mandrel dog screw (18) below mates with the internal diameter of main body tube (2) second level positioning step latus rectum, and mandrel dog screw (18) lower end is provided with support spring (15) to mandrel (6) outer wall between the positioning step of the second level;
Described commutation joint (3) bottom is provided with sieve aperture (17), in load releasing valve (4), be provided with lower Disc (26), in lower Disc (26), be provided with the cavity of upward opening, commutation joint (3) bottom is connected by guide finger (20) with lower Disc (26) cavity, lower Disc (26) bottom outer wall is provided with the lower Disc guiding rib (25) with load releasing valve (4) internal diameter corresponding size, between commutation joint (3) bottom and lower Disc (26), be also provided with lower Disc back-moving spring (19), load releasing valve (4) lower end is provided with load releasing valve valve point interface (22) and test interface (24), load releasing valve valve point interface (22) and test interface (24) form limited step restriction lower Disc (26) stroke, load releasing valve valve point interface (22) connects load releasing valve valve point (21), on load releasing valve valve point (21), there is load releasing valve adjusting rod, between load releasing valve valve point (21) and load releasing valve adjusting rod, be provided with load releasing valve valve point back-moving spring (23),
On the outer wall of mandrel (6) lower end, be also provided with track reversing groove (14), described track reversing groove (14) is formed by the two rows right angle tooth cycle alternation arrangement being opened on the outer wall of mandrel (6) lower end, between the right-angle side of the hypotenuse of the each right angle of tooth, described upper row right angle tooth and adjacent right angle tooth, have the upper limit groove that the degree of depth is consistent, between the right-angle side of the hypotenuse of each right angle tooth of described lower row right angle tooth and adjacent right angle tooth, also have lower limit groove, described lower limit groove comprises long lower limit groove and short lower limit groove, both are opened on the outer wall of mandrel (6) lower end and are interspersed, main body tube (2) is also provided with commutative ring (13) with commutation joint (3) junction, and commutative ring (13) can horizontally rotate, and is provided with commutation shop bolt (16) on commutative ring (13), and described commutation shop bolt (16) is embedded in limited impression.
2. a kind of Operating Pressure circulation bottom valve according to claim 1, it is characterized in that: the limited impression on mandrel and commutative ring (13) contact surface is upper limit groove, long lower limit groove and short lower limit groove, mandrel (6) moves up and down and drives commutation shop bolt (16) between limited impression upper limit groove, long lower limit groove and short lower limit groove, changing, controlling the stroke of mandrel (6) in commutation joint (3).
3. a kind of Operating Pressure circulation bottom valve according to claim 1, is characterized in that: outside junction, main body tube (2) and mandrel (6) junction of top connection (1) and main body tube (2), in the junction periphery of the junction of flap (8) and mandrel (6), main body tube (2) and the joint (3) that commutates, be equipped with seal with the junction of commutate joint (3) and load releasing valve (4).
4. a kind of Operating Pressure circulation bottom valve according to claim 1, is characterized in that: described top connection (1) is equipped with holding screw with main body tube (2) junction and commutation joint (3) with load releasing valve (4) junction with main body tube (2) junction, commutation joint (3).
5. a kind of Operating Pressure circulation bottom valve according to claim 1, it is characterized in that: (3 bottoms are provided with sieve aperture (17) to described commutation joint, in the load releasing valve (4) of commutation joint bottom, be provided with lower Disc (26), lower Disc (26) top is provided with the cavity of upward opening, commutation joint (3) bottom is connected by guide finger (20) with load releasing valve, guide finger (20) is positioned at lower Disc (26) cavity top, lower Disc (26) bottom outer wall is provided with the lower Disc guiding rib (25) with load releasing valve (4) internal diameter corresponding size, on guide finger, cover has lower Disc back-moving spring (19), lower Disc (26) bottom is provided with limited step, on limited step, be provided with valve point and be communicated with interface (22) and test connection interface (24), on limited step, form limited step restriction lower Disc (26) stroke, load releasing valve valve point is communicated with interface (22) and test connection interface (24) is to connect with commutation joint bottom in the time moving on lower Disc (26) limited step, valve point is communicated with interface (22) and connects load releasing valve valve point (21), on load releasing valve valve point (21), there is load releasing valve adjusting rod, between valve point (21) and load releasing valve adjusting rod, be provided with load releasing valve valve point back-moving spring (23).
6. a kind of Operating Pressure circulation bottom valve according to claim 1, is characterized in that: described commutation shop bolt (16) matches with the quantity of long lower limit groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320697225.8U CN203614079U (en) | 2013-11-06 | 2013-11-06 | Circulating bottom valve operated under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320697225.8U CN203614079U (en) | 2013-11-06 | 2013-11-06 | Circulating bottom valve operated under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614079U true CN203614079U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320697225.8U Withdrawn - After Issue CN203614079U (en) | 2013-11-06 | 2013-11-06 | Circulating bottom valve operated under pressure |
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| Country | Link |
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| CN (1) | CN203614079U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573214A (en) * | 2013-11-06 | 2014-02-12 | 盐城彩阳电器阀门有限公司 | Circulation bottom valve which works with pressure |
| CN104975822A (en) * | 2015-06-29 | 2015-10-14 | 上海优强石油科技有限公司 | Deflation valve capable of being installed at any depth of underground |
| CN111609176A (en) * | 2020-05-09 | 2020-09-01 | 温州东特科技有限公司 | Sanitary tank bottom valve |
-
2013
- 2013-11-06 CN CN201320697225.8U patent/CN203614079U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573214A (en) * | 2013-11-06 | 2014-02-12 | 盐城彩阳电器阀门有限公司 | Circulation bottom valve which works with pressure |
| CN103573214B (en) * | 2013-11-06 | 2016-02-10 | 江苏新彩阳机电技术有限公司 | A kind of Operating Pressure circulation bottom valve |
| CN104975822A (en) * | 2015-06-29 | 2015-10-14 | 上海优强石油科技有限公司 | Deflation valve capable of being installed at any depth of underground |
| CN111609176A (en) * | 2020-05-09 | 2020-09-01 | 温州东特科技有限公司 | Sanitary tank bottom valve |
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Owner name: JIANGSU CAIYANG ELECTRICAL + MECHANICAL TECHNOLOGY Free format text: FORMER NAME: YANCHENG CAIYANG ELECTRICAL VALVE CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 224300 No. 48 West North Road, hop Tak Town, Jiangsu, Yancheng City Patentee after: JIANGSU XINCAIYANG ELECTROMECHANICAL TECHNOLOGY CO., LTD. Address before: 224300 No. 48 West North Road, hop Tak Town, Jiangsu, Yancheng City Patentee before: Yancheng Caiyang Electrical Valve Co., Ltd. |
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Granted publication date: 20140528 Effective date of abandoning: 20160210 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |