CN202360388U - Two-position valve used for underground electrical submersible screw pump - Google Patents
Two-position valve used for underground electrical submersible screw pump Download PDFInfo
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- CN202360388U CN202360388U CN2011204698739U CN201120469873U CN202360388U CN 202360388 U CN202360388 U CN 202360388U CN 2011204698739 U CN2011204698739 U CN 2011204698739U CN 201120469873 U CN201120469873 U CN 201120469873U CN 202360388 U CN202360388 U CN 202360388U
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- valve core
- valve
- core body
- ball
- pump
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Abstract
The utility model discloses a two-position valve used for an underground electrical submersible screw pump. A valve core assembly which moves up and down is arranged between an upper limit sleeve and a lower limit sleeve of a valve shell; the upper valve core body and the lower valve core body of the valve core assembly are respectively provided with a valve ball and a ball seat of the valve ball; the upper core valve body is symmetrically provided with radial side holes; the lower valve core body is symmetrically provided with radial channels which are communicated with the inner side and the outer side of the lower valve core body; and when the valve core assembly is at the lower position, the radial channels of the lower valve core body of the valve core assembly are opposite to well liquid inlet holes of the valve shell. According to the two-position valve, when the pump is rotated forward, the valve ball is combined with an upper ball seat in the upper valve core body and the valve ball is combined with a side ball seat in the lower valve core body to close by the pressure of pump liquid respectively; the valve core assembly ascends; and the pump liquid flows out from the radial side holes of the upper valve core body. When the pump is rotated reversely or stopped, the valve core assembly descends under the pressure of liquid in an oil pipe and under the action of a compression spring; and the well liquid enters the cavity of the screw pump from the radial channels of the lower valve core body, so that the cooling of a rotor and a stator in operation when the screw pump is rotated reversely is ensured, and stator rubber is protected from burning.
Description
Technical field
The utility model belongs to the down-hole electric submersible screw pump, particularly relates to the down-hole electric submersible screw pump and uses two-position valve.
Background technique
The outlet of existing electric submersible screw pump is provided with an one-way valve; One-way valve is made up of with the spool that is engaged in the inverted cone platform the inverted cone platform of lower housing portion; This valve was opened overcurrent when screw pump was opened, and this valve cut out when screw pump stopped, and its effect is to let out under the liquid that prevents in the oil pipe.
Above-mentioned one-way valve is a technology of continuing to use centrifugal latent oily unit; The down-hole electric submersible screw pump is difficult to the defective that overcomes below the existence: when need be separated desanding card etc. and carries out reverse turn operation; Along with the closed-in well liquid passage of one-way valve is blocked; But the pump liquid in the one-way valve of closing to the screw pump pump housing is found time the screw pump that is inverted rapidly; Stator is in unlubricated abrasion state with rotor rotated under no pump liquid status, the rubber lining of stator surface is overheated, if the screw pump reverse turn operation time slightly length will cause stator to damage.
Summary of the invention
The utility model is to have the technical problem that possibly damage screw pump stator in order to solve when electric submersible screw pump reverses, and proposes the two-position valve that a kind of down-hole electric submersible screw pump is used.
The utility model is taked following scheme for realizing above-mentioned purpose: this down-hole electric submersible screw pump comprises valve chest with two-position valve, and characteristic is that the valve chest bottom is provided with the lower limit cover; The valve chest upper end portion is provided with the upper limit cover, is provided with the Spool assembly that moves up and down up and down between the stop collar, and said Spool assembly is above, the lower valve core body is a main body; The upper valve core body is a tubulose; The lower valve core body is provided with shoulder, and the above straight tube of shoulder is threaded with the internal thread of upper valve core body, and the lower valve core body below the shoulder is provided with the taper type endoporus that communicates with its straight tube; The boss sliding fit of upper valve core body and valve chest; Lower valve core body and valve chest sliding fit are provided with the spring that is set in the upper valve core body between the boss bottom surface of valve chest and the shoulder of lower valve core body, are provided with the valve ball that moves up and down in the said upper valve core body and are engaged in the upper and lower ball seat that has via hole of valve ball respectively; Upper valve core body between the upper and lower ball seat is arranged with radially side opening; Said lower valve core body is arranged with the radial passage that is communicated with the outside in it, is provided with the valve ball that laterally moves in the radial passage, and the outer end of radial passage is provided with the side ball seat of band via hole; Said Spool assembly its pairing valve chest inwall in lower valve core body radial passage when lowering position is provided with annular groove, and the well liquid that annular groove is provided with the connecting valve hull outside enters the hole.
The utility model can also be taked following technical measures:
The radial passage that said lower valve core body is communicated with the outside in it is made up of the main passage that supplies valve ball laterally to move two side canals inboard with being communicated with this main passage and lower valve core body.
The beneficial effect and the advantage of the utility model are: this two-position valve is just being transported when capable at pump; The pump hydraulic coupling makes the valve ball in the upper valve core body engage and seal with the side ball seat with valve ball in upper ball base, the lower valve core body respectively; Spool assembly rises, and pump liquid goes out from the radial side orifice flow of upper valve core body.When pump counter-rotating or termination of pumping; Spool assembly descends under fluid pressure and the pressure spring effect in oil pipe; The radially side opening of upper valve core body was engaged and sealed with lower ball base by the valve ball in the sealing of the boss of valve chest, the upper valve core body this moment; And the radial passage of lower valve core body is just corresponding in the annular groove of valve chest inwall institute, and the well liquid of well hydraulic coupling through valve chest advances valve ball that the hole forces the lower valve core body and breaks away from the side ball seat and remove sealing, and well liquid is in the radial passage entering screw rod pump chamber of lower valve core body; Cooling when rotor and stator turn round when guaranteeing the screw pump counter-rotating, stator rubber is able to protection and is not burnt.The utlity model has rational in infrastructure, stable, help prolonging the electric submersible screw pump outstanding advantage in working life.
Description of drawings
Accompanying drawing 1 is one of this two-position valve example structure generalized section.
Accompanying drawing 2 is two of this two-position valve example structure generalized sections.
Accompanying drawing 3 is embodiment's Spool assembly structural profile schematic representation.
Mark among the figure: 1 valve chest, the 1-1 boss, the 1-2 annular groove, 1-3 well liquid enters the hole, 2 upper limit covers; 3 upper valve core bodies, 3-1 is side opening radially, 4 pressure rings, 5 upper ball bases, 6 move up and down valve ball; 7 lower ball bases, 8 springs, 9 lower valve core bodies, 9-1 main passage, 9-2 side canal; 9-3 taper type endoporus, 10 side ball seats, 11 laterally move valve ball, 12 lower limit covers, 13 joints.
Embodiment
Further specify the utility model below in conjunction with embodiment and accompanying drawing thereof.
Like Fig. 1,2,3 illustrated embodiments, this down-hole electric submersible screw pump is provided with lower limit cover 12 with valve chest 1 bottom of two-position valve, and the valve chest upper end portion is provided with upper limit cover 2, is provided with the Spool assembly that moves up and down up and down between the stop collar.
The above valve core of Spool assembly 3, lower valve core body 9 are main body, and upper valve core body 3 is a tubulose, and lower valve core body 9 is provided with shoulder.The above straight tube of lower valve core body 9 shoulders is threaded with the internal thread of upper valve core body 3, and the lower valve core body below the shoulder is provided with the taper type endoporus 9-3 that communicates with its straight tube.The boss 1-1 sliding fit of upper valve core body 3 and valve chest 1, lower valve core body 9 and valve chest 1 sliding fit are provided with the spring 8 that is set in upper valve core body 3 between the boss 1-1 bottom surface of valve chest and the shoulder of lower valve core body 9.
Be provided with the upper ball base that has via hole 5 and lower ball base 7 that move up and down valve ball 6 and be engaged in this valve ball respectively in the upper valve core body 3, the upper valve core body 3 between the upper and lower ball seat is arranged with radially side opening 3-1.
Lower valve core body 9 is arranged with the radial passage that is communicated with the outside in it, and the radial passage is made up of with two inboard side canal 9-2 of lower valve core body main passage 9-1 and this main passage of connection.Be provided with in the main passage of radial passage and laterally move valve ball 11, the outer end of main passage 9-1 is provided with the side ball seat 10 of band via hole.
Spool assembly pairing valve chest 1 inwall in its lower valve core body 9 radial passages when lowering position is provided with annular groove 1-2, and the well liquid that annular groove 1-2 is provided with the connecting valve hull outside advances hole 1-3.
This two-position valve shown in Figure 1 is just to transport the situation when capable at pump; Its pressure of pump liquid from bottom to top makes the valve ball 11 that laterally moves that moves up and down in valve ball 6 and upper ball base 5, the lower valve core body 9 in the upper valve core body 3 engage and seal with side ball seat 10 respectively; Spool assembly rises, and pump liquid flows out from the radially side opening 3-1 of upper valve core body.When pump counter-rotating or termination of pumping; Descend under the effect of Spool assembly top-down fluid pressure and pressure spring 8 in oil pipe; The radially side opening 3-1 of upper valve core body 3 is engaged and seals with lower ball base 7 by the valve ball 6 that moves up and down in the boss 1-1 of valve chest sealing, the upper valve core body 3 at this moment; And lower valve core body 9 to constitute the radial passage by main passage 9-1 and two 9-2 just corresponding in the annular groove 1-1-2 of valve chest 1 inwall institute; The well liquid of well hydraulic coupling through valve chest advances hole 1-3 forces the valve ball 11 that laterally moves of lower valve core body 9 to break away from side ball seat 10 and remove sealing; Well liquid gets in the screw rod pump chamber from the radial passage of lower valve core body, the cooling when rotor and stator turn round when guaranteeing the screw pump counter-rotating.
Claims (2)
1. the two-position valve that the down-hole electric submersible screw pump is used comprises valve chest, it is characterized in that: the valve chest bottom is provided with the lower limit cover; The valve chest upper end portion is provided with the upper limit cover, is provided with the Spool assembly that moves up and down up and down between the stop collar, and said Spool assembly is above, the lower valve core body is a main body; The upper valve core body is a tubulose; The lower valve core body is provided with shoulder, and the above straight tube of shoulder is threaded with the internal thread of upper valve core body, and the lower valve core body below the shoulder is provided with the taper type endoporus that communicates with its straight tube; The boss sliding fit of upper valve core body and valve chest; Lower valve core body and valve chest sliding fit are provided with the spring that is set in the upper valve core body between the boss bottom surface of valve chest and the shoulder of lower valve core body, are provided with the valve ball that moves up and down in the said upper valve core body and are engaged in the upper and lower ball seat that has via hole of valve ball respectively; Upper valve core body between the upper and lower ball seat is arranged with radially side opening; Said lower valve core body is arranged with the radial passage that is communicated with the outside in it, is provided with the valve ball that laterally moves in the radial passage, and the outer end of radial passage is provided with the side ball seat of band via hole; Said Spool assembly its pairing valve chest inwall in lower valve core body radial passage when lowering position is provided with annular groove, and the well liquid that annular groove is provided with the connecting valve hull outside enters the hole.
2. two-position valve according to claim 1 is characterized in that: the radial passage that said lower valve core body is communicated with the outside in it is made up of the main passage that supplies valve ball laterally to move two side canals inboard with being communicated with this main passage and lower valve core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204698739U CN202360388U (en) | 2011-11-22 | 2011-11-22 | Two-position valve used for underground electrical submersible screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204698739U CN202360388U (en) | 2011-11-22 | 2011-11-22 | Two-position valve used for underground electrical submersible screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360388U true CN202360388U (en) | 2012-08-01 |
Family
ID=46571578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204698739U Expired - Lifetime CN202360388U (en) | 2011-11-22 | 2011-11-22 | Two-position valve used for underground electrical submersible screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019030A (en) * | 2014-06-20 | 2014-09-03 | 西南石油大学 | Discharging device of reverse-circulating liquid-driving oil extraction screw pump |
| CN107893754A (en) * | 2016-04-13 | 2018-04-10 | 范秀红 | A kind of application method of electric submersible screw pump |
-
2011
- 2011-11-22 CN CN2011204698739U patent/CN202360388U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019030A (en) * | 2014-06-20 | 2014-09-03 | 西南石油大学 | Discharging device of reverse-circulating liquid-driving oil extraction screw pump |
| CN107893754A (en) * | 2016-04-13 | 2018-04-10 | 范秀红 | A kind of application method of electric submersible screw pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin Lutai Precision Casting Co., Ltd. Assignor: Tianjin Rongheng Group Co., Ltd. Contract record no.: 2012120000097 Denomination of utility model: Two-position valve used for underground electrical submersible screw pump Granted publication date: 20120801 License type: Exclusive License Record date: 20121231 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |
|
| CX01 | Expiry of patent term |