Reciprocating electric submersible pump suction valve

Abstract

The utility model discloses a reciprocating electric submersible pump suction valve, and relates to the technical field of oil exploitation equipment. A cylinder of the filter screen is of a corrugated pipe structure, the filter screen is formed by welding warp and weft in a crossed mode, the weft is welded to the outer side of the warp, the section of the weft is triangular, the sharp corner of the triangular weft faces the outer side, the upper half waveform of a corrugated pipe of the filter screen is spaced by a section of conical pipe, and the warp is welded to the upper side and the lower side of the conical pipe. The utility model has the beneficial effects that the filter screen is arranged at the lower part of the valve head, impurities in crude oil are filtered out, the situation that the valve head is blocked at the position of the valve head and is not tightly closed is prevented, the pump efficiency is ensured, when a reciprocating mechanism discharges the crude oil, the valve head falls on the valve seat to be closed, and in the falling process of the valve head, the vibration sleeve falls on the filter screen, and the corrugated pipe part of the filter screen is lengthened; the impurities clamped between the weft yarns fall to the outside, so that the filter screen can be prevented from being blocked, and the flow of the sucked crude oil is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum exploitation equipment technical field especially relates to a reciprocating submersible electric pump suction valve. BACKGROUND

[0002] With reciprocating submersible electric pump by linear motor drive reciprocating mechanism up and down reciprocating operation, the suction valve and the discharge valve of reciprocating mechanism alternate action will lift crude oil to the ground, the process of crude oil extraction, downhole liquid composition is complex, in addition to crude oil, water, also contains other chemical substances, such as carbonate, sulfate scale, scale is easy to cause submersible electric pump suction entrance to block, or stuck in the density surface of suction valve, cause suction not smooth, work discontinuous, thereby influence the working effect of reciprocating submersible electric pump, practicality is lower. SUMMARY

[0003] In order to solve the current reciprocating submersible electric pump suction valve due to suction impurities close not strictly, suction entrance block, lead to pump efficiency low problem, the utility model provides a kind of reciprocating submersible electric pump suction valve.

[0004] The utility model provides technical scheme is: a kind of reciprocating submersible electric pump suction valve, including valve body, valve body is the pipe structure of a section outer diameter same with oil pipe, valve body upper portion is processed with the female thread of oil pipe, valve body lower portion is processed with valve seat, valve seat center is equipped with through-hole, the upper portion of the through-hole of valve seat has conical annular surface, valve head is installed on the upper portion of valve seat, and valve head is disc structure, the outer circle of valve head is processed into the conical annular surface matched with valve seat, the upper portion of the center of valve head is fixedly connected with guide column, valve body is connected with the limiting flow plate of thread connection in the female thread of oil pipe lower portion, the center of limiting flow plate is equipped with guide sleeve, limiting flow plate is opened with the uniformly distributed flow hole, and guide column is connected with clearance fit with guide sleeve;

[0005] Valve body lower portion outer circle thread connection adapter sleeve, adapter sleeve lower portion is welded with filter screen, and filter screen is the cup line structure of bottom plugging cylinder, valve head lower portion thread connection support column, support column outside is covered with vibration sleeve, vibration sleeve upper portion is connected with limiting ring by bolt, limiting ring is split structure, limiting ring is connected with clearance fit with support column, support column is equipped with the boss of diameter expansion in the lower portion of limiting ring, and the bottom between boss and vibration sleeve is equipped with compression spring.

[0006] The cylinder of filter screen is bellows pipe structure, and filter screen is composed of warp and weft cross welding, and weft is welded on the outside of warp, and the section of weft is triangle, and the sharp angle of triangle weft faces the outside, wherein, the upper half wave of filter screen bellows pipe is separated by a conical pipe, and warp is welded on the upper and lower sides of conical pipe.

[0007] When valve head falls on valve seat, compression spring is in compression state.

[0008] The vibration sleeve bottom is welded with several uniformly distributed firing pins, and the firing pins are vertically arranged.

[0009] The utility model discloses beneficial effect is: set up filter screen in the lower part of valve head, filter the impurity in crude oil, prevent closing not tightly and guarantee pump efficiency, when the reciprocating mechanism inhales crude oil, the valve head rises, when the reciprocating mechanism discharges crude oil, the valve head falls on the valve seat and closes, in the process of the valve head falling, the vibration sleeve falls on the filter screen, with the compression spring being compressed, the bellows part of filter screen is lengthened, the impurity clamped between weft silk falls to the outside, the filter screen is cleaned once under the action of vibration sleeve in every oil suction, oil discharge process, can guarantee that filter screen is not blocked, guarantee the flow of crude oil suction. BRIEF DESCRIPTION OF DRAWINGS

[0010] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the structure schematic diagram of the utility model;

[0011] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the A place enlarged view of attached Figure 1

[0012] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the structure schematic diagram of the utility model when valve head opens;

[0013] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is the structure schematic diagram of the utility model when valve head falls back.

[0014] In the drawing, 1-valve body, 101-oil pipe female thread, 102-valve seat, 2-valve head, 3-limiting overflow plate, 301-guide sleeve, 302-overflow hole, 4-guide column, 5-adapter sleeve, 6-supporting column, 601-tub, 7-limiting ring, 8-vibration sleeve, 9-filter screen, 901-weft, 902-warp, 903-conical tube, 904-upper half wave, 10-firing pin. DETAILED DESCRIPTION

[0015] As Figures 1 to 4 shown, a reciprocating submersible electric pump suction valve, including valve body 1, valve body 1 is a section of the same outer diameter with oil pipe pipe structure, the upper part of valve body 1 is processed with oil pipe female thread 101 for connecting reciprocating mechanism, the lower part of valve body 1 is processed with valve seat 102, the center of valve seat 102 is provided with through hole, the upper part of valve seat 102 has conical annular surface, the upper part of valve seat 102 is installed with valve head 2, valve head 2 is disc structure, the lower edge of the outer circle of valve head 2 is processed into the conical annular surface matched with valve seat 102, the upper part of valve head 2 is fixedly connected with guide column 4, valve body 1 is threadedly connected with limiting overflow plate 3 below oil pipe female thread 101, the center of limiting overflow plate 3 is provided with guide sleeve 301, limiting overflow plate 3 is opened with uniformly distributed overflow hole 302, guide column 4 is connected with guide sleeve 301 with clearance fit;

[0016] ​The valve body 1 is externally threaded at the lower part, and a connector sleeve 5 is welded to the lower part of the connector sleeve 5, and a filter screen 9 is welded to the lower part of the filter screen 9, and the filter screen 9 is a cylindrical cup-shaped structure with a bottom blocked, and the valve head 2 is threaded at the lower part, and a support column 6 is sleeved on the outside of the support column 6, and a vibration sleeve 8 is sleeved on the outside of the vibration sleeve 8, and a limiting ring 7 is connected to the upper part of the vibration sleeve 8 by bolts, and the limiting ring 7 is a split structure, and the limiting ring 7 is in clearance fit with the support column 6, and the support column 6 is provided with a boss 601 with an enlarged diameter at the lower part of the limiting ring 7, and a compression spring is arranged between the boss 601 and the bottom of the vibration sleeve 8.

[0017] The cylindrical part of the filter screen 9 is a corrugated tube structure, and the filter screen 9 is composed of warp yarns 902 and weft yarns 901 which are cross-welded, and the weft yarns 901 are welded to the outside of the warp yarns 902, and the cross section of the weft yarns 901 is triangular, and the sharp corners of the triangular weft yarns 901 are directed outward, and the impurities to be filtered are clamped between two weft yarns 901, and when the filter screen 9 is elongated, the distance between the adjacent weft yarns 901 is enlarged, and the impurities will fall outside the filter screen 9, and the upper half wave 904 of the corrugated tube of the filter screen 9 is spaced by a conical tube 903, and the warp yarns 902 are welded to the upper and lower sides of the conical tube 903 to prevent the impurities from falling on the part and being difficult to fall out to cause blockage.

[0018] When the valve head 2 falls on the valve seat 102, the compression spring is in a compressed state.

[0019] The vibration sleeve 8 is welded with a plurality of evenly distributed striker pins 10 at the bottom, and the striker pins 10 are vertically arranged to reduce the contact area with the filter screen 9 and improve the vibration effect.

[0020] The filter screen 9 is arranged at the lower part of the valve head 2 to filter out the impurities in the crude oil and prevent the impurities from being stuck in the valve head 2 to cause the valve head 2 to not close tightly, and ensure the pump efficiency, and when the reciprocating mechanism sucks the crude oil, the valve head 2 rises, and when the reciprocating mechanism discharges the crude oil, the valve head 2 falls on the valve seat 102 to be closed, and in the process of falling of the valve head 2, the vibration sleeve 8 falls on the filter screen 9, and with the compression of the compression spring, the corrugated tube part of the filter screen 9 is elongated, and the impurities clamped between the weft yarns 901 fall outside, and the filter screen 9 is cleaned once by the vibration sleeve 8 in the process of sucking and discharging the crude oil each time, and the filter screen 9 can be prevented from being blocked, and the flow of the sucked crude oil can be ensured.

Claims

1. A reciprocating electric submersible pump suction valve comprising a valve body (1), characterized in that: The valve body (1) is a pipe structure with the same outer diameter as the oil pipe, the upper part of the valve body (1) is provided with the oil pipe female thread (101), the lower part of the valve body (1) is provided with the valve seat (102), the valve seat (102) is provided with a through hole in the center, the upper part of the through hole of the valve seat (102) is provided with a conical annular surface, the upper part of the valve seat (102) is provided with the valve head (2), the valve head (2) is a disc structure, the lower edge of the outer circle of the valve head (2) is processed into a conical annular surface matched with the valve seat (102), the upper part of the center of the valve head (2) is fixedly connected with the guide column (4), the lower part of the oil pipe female thread (101) of the valve body (1) is threadedly connected with the limiting flow plate (3), the center of the limiting flow plate (3) is provided with the guide sleeve (301), the limiting flow plate (3) is provided with the uniformly distributed flow holes (302), the guide column (4) is connected with the guide sleeve (301) in a clearance fit; The lower part of the outer circle of the valve body (1) is threadedly connected with the adapter sleeve (5), the lower part of the adapter sleeve (5) is welded with the filter screen (9), the filter screen (9) is a cup-shaped structure with a bottom blockage, the lower part of the valve head (2) is threadedly connected with the support column (6), the outer side of the support column (6) is sleeved with the vibration sleeve (8), the upper part of the vibration sleeve (8) is connected with the limiting ring (7) through bolts, the limiting ring (7) is a split structure, the limiting ring (7) is in a clearance fit with the support column (6), the support column (6) is provided with the enlarged boss (601) at the lower part of the limiting ring (7), the boss (601) and the bottom of the vibration sleeve (8) are provided with the compression spring.

2. A reciprocating electric submersible pump suction valve according to claim 1, characterized in that: The cylinder of the filter screen (9) is a corrugated pipe structure, the filter screen (9) is composed of the warp (902) and the weft (901) cross-welded, the weft (901) is welded on the outer side of the warp (902), the cross section of the weft (901) is triangular, the sharp corner of the triangular weft (901) faces the outer side, wherein the upper half wave (904) of the corrugated pipe of the filter screen (9) is spaced by a conical pipe (903), the warp (902) is welded on the upper and lower sides of the conical pipe (903).

3. A suction valve for a reciprocating electric submersible pump as defined in claim 1, wherein: When the valve head (2) falls on the valve seat (102), the compression spring is in a compressed state.

4. A reciprocating electric submersible pump suction valve according to claim 1, wherein: The bottom of the vibration sleeve (8) is welded with a plurality of uniformly distributed impact pins (10), the impact pins (10) are vertically arranged.

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