CN216198877U - Underground moving cylinder type single-action pump for rodless drainage and production system - Google Patents
Underground moving cylinder type single-action pump for rodless drainage and production system Download PDFInfo
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- CN216198877U CN216198877U CN202122905744.6U CN202122905744U CN216198877U CN 216198877 U CN216198877 U CN 216198877U CN 202122905744 U CN202122905744 U CN 202122905744U CN 216198877 U CN216198877 U CN 216198877U
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Abstract
The utility model discloses an underground moving cylinder type single-acting pump for a rodless drainage and production system, which comprises a fixing assembly and a plunger assembly, wherein the fixing assembly comprises an outer pipe, a plug, a power pump cylinder, an outer pipe limiting joint, a fixed valve, a drainage and production plunger and a liquid suction pipe, the plunger assembly comprises a horizontal well valve piece, a power plunger, a drainage and production pump cylinder and a limiting joint, the power plunger and the drainage and production pump cylinder form a moving cylinder type structure, and the horizontal well valve piece is provided with a novel centering righting structure and a limiting structure. The underground movable cylinder type single-action pump for the rodless drainage and production system is not easy to wear, has a large-discharge well washing function, prevents pump blockage, and is good in sealing performance and smooth in liquid discharge.
Description
Technical Field
The utility model belongs to the technical field of mining, and particularly relates to an underground movable cylinder type single-action pump for a rodless discharge and mining system.
Background
The following difficult problems of drainage and mining commonly exist in the field of drainage and mining of coal bed gas horizontal wells: when the coal powder is stuck in the pump and the underground liquid supply is insufficient in the later period of extraction, the pump is easy to burn and the valve is not closed tightly because of horizontal placement. For publication No.: CN102758602B, inventive name: the utility model mainly solves the problems in a concentric pipe hydraulic piston discharging and extracting device and a method for a coal-bed gas well, and provides an improvement on a downhole pump set in the patent.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
The downhole movable cylinder type single-action pump for the rodless drainage and production system comprises a fixing assembly and a plunger assembly.
The fixing assembly comprises an outer pipe, a plug, a straight-through upper joint, a power pump cylinder, an outer pipe limiting joint, a fixing valve, a discharging and mining plunger and a liquid suction pipe, wherein the plug is positioned at the leftmost side, the plug is connected with a central pipe of the rodless discharging and mining system, the plug is connected with the power pump cylinder, the straight-through upper joint and the power pump cylinder are both fixed in the outer pipe, the outer pipe limiting joint is arranged on the inner wall of the outer pipe and is arranged at intervals with the power pump cylinder, the discharging and mining plunger is arranged in the outer pipe, the discharging and mining plunger is positioned at the right side of the outer pipe limiting joint and is arranged at intervals with the outer pipe limiting joint, the fixing valve is arranged at the left end part of the discharging and mining plunger, and the liquid suction pipe is connected with the right end part of the discharging and mining plunger;
plunger subassembly includes horizontal well valve member, power plunger, arranges and adopts pump barrel, spacing joint, the horizontal well valve member with the power plunger is connected, the power plunger is established in the power pump barrel, the power plunger with power pump barrel transition fit, the right-hand member portion of power plunger with arrange and adopt the pump barrel and connect, arrange and adopt the plunger part and stretch into arrange in adopting the pump barrel, just arrange adopt the plunger with arrange and adopt pump barrel transition fit, spacing joint is established on arranging and adopts pump barrel outer wall, and is located outer tube spacing joint right-hand.
In some embodiments, the horizontal well valve member comprises: compress tightly joint, valve ball stop collar, valve ball, high wear-resisting valve ball set up cover, disk seat, water conservancy diversion cover, shell, compress tightly connect with the shell is connected, the valve ball stop collar the valve ball the high wear-resisting valve ball set up cover the disk seat, the water conservancy diversion cover is established in proper order in the shell, the valve ball stop collar with compress tightly to connect to end, high wear-resisting valve ball set up with the valve ball stop collar ends, the valve ball is established in the high wear-resisting valve ball set up cover, the disk seat with the high wear-resisting valve ball set up cover end, just the valve ball with the disk seat is concentric, the water conservancy diversion cover with the disk seat ends.
In some embodiments, the high-wear-resistance valve ball centering sleeve is a hollow ring, and the inner wall of the high-wear-resistance valve ball centering sleeve is further provided with a plurality of grooves which are distributed at intervals along the circumferential direction of the high-wear-resistance valve ball centering sleeve.
In some embodiments, the downhole moving barrel type single-acting pump for the rodless drainage and production system is further provided with a washing hole, and the washing hole is formed in the drainage and production pump barrel.
In some embodiments, the downhole movable barrel type single-acting pump for the rodless drainage and production system is further provided with a straight-through upper joint, one end of the straight-through upper joint is connected with the plug, and the other end of the straight-through upper joint is connected with the power pump barrel.
In some embodiments, there may be two of said horizontal well valve members, and two of said horizontal well valve members are mounted in series in said power plunger.
In some embodiments, there may be two of the fixed valves, with two of the fixed valves being mounted in series in the drainage plunger.
Has the advantages that:
1. the underground movable cylinder type single-action pump for the rodless drainage and production system is not easy to wear, has the function of flushing a well with large discharge capacity, prevents the pump from being blocked, and has good sealing performance and smooth liquid discharge.
2. The utility model has a centralizing structure and a limiting structure, wherein the centralizing structure is a horizontal well valve, and can ensure that a movable cylinder structure consisting of a power piston and an extraction pump cylinder is not easy to be eccentrically worn during movement, thereby prolonging the service life.
3. The well washing hole on the discharge and recovery pump cylinder can perform the function of well washing with large discharge, and the coal dust is flushed out to prevent the pump from being stuck.
4. The valve ball is concentric with the valve seat, and the valve ball is fast in opening and closing speed.
5. The two horizontal well valve members are connected in series, so that the pollution resistance can be improved, and the valve ball cannot be sealed due to the fact that the valve seat is abraded when the spring auxiliary valve ball runs.
6. The straight-through upper joint is arranged, the produced fluid containing more coal powder is discharged from the central pipe, the produced fluid channel is smooth, and the liquid discharge resistance is small.
Drawings
FIG. 1 is a schematic view of a downhole moving barrel single acting pump for a rodless production system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a horizontal well valve member according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a horizontal well valve member high wear valve ball centralizing sleeve in accordance with an embodiment of the utility model;
FIG. 4 is an elevation view of a horizontal well valve member high wear valve ball centralizing sleeve according to an embodiment of the utility model;
reference numerals:
a plug 1; a straight-through upper joint 2; a horizontal well valve member 3; a compression joint 31; a ball retainer 32; a valve ball 33; a highly wear-resistant valve ball centering sleeve 34; a valve seat 35; a flow guide sleeve 36; a housing 37; a power pump cylinder 4; a power plunger 5; a discharge and production pump cylinder 6; an outer tube limit joint 7; a limit joint 8; washing the well hole 9; a fixed valve 10; a discharging and mining plunger 11; a pipette 12; an outer tube 13; a central tube 14.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings.
The first embodiment is as follows:
the downhole movable cylinder type single-action pump for the rodless drainage and production system comprises a fixing assembly and a plunger assembly.
The fixing assembly comprises an outer pipe, a plug 1, a power pump barrel 4, an outer pipe limiting joint 7, a fixing valve 10, a discharging and mining plunger 11 and a pipette 12, and the plunger assembly comprises a horizontal well valve piece 3, a power plunger 5, a discharging and mining pump barrel 6 and a limiting joint 7.
Specifically, as shown in fig. 1, the downhole movable cylinder type single-acting pump for the rodless drainage and production system is horizontally placed, the outer pipe 13 is a hollow circular pipe, the middle part of the outer pipe 13 is provided with a large-diameter section with two truncated cone-shaped ends, the plug 1 is in threaded connection with the central pipe 14, the plug 1 is inserted into the straight-through upper joint 2 and is sealed through a sealing ring, the right end part of the straight-through upper joint 2 is in threaded connection with the power pump cylinder 4 and is fixed in the outer pipe 13, the power plunger 5 is arranged in the power pump cylinder 4 and is in transition fit with the power pump cylinder 4, and sealing is formed between the two. The horizontal well valve member 3 is in threaded connection with the power plunger 5, the right end of the power plunger 5 is in threaded connection with the drainage pump barrel 6, and the outer pipe limiting joint 7 is located on the right side of the power plunger 5 and is arranged at intervals with the power plunger 5. The outer tube limit fitting 7 is also located at the end of the large diameter section of the outer tube 13. The outer tube limit joint 7 is fixed on the inner wall of the outer tube 13, and the outer wall of the drainage pump barrel 6 is provided with a limit joint 8. Horizontal well valve element 3.
The discharging and mining plunger 11 is positioned in the discharging and mining pump cylinder 6, the discharging and mining plunger 11 is excessively matched with the discharging and mining pump cylinder 6, and a seal is formed between the discharging and mining plunger 11 and the discharging and mining pump cylinder 6. The fixed valve 10 is connected with the left end part of the discharging and mining plunger 11 in a threaded mode. The pipette is screwed to the right end of the extraction plunger 11. The power plunger 5 drives the discharging and mining pump barrel 6 to reciprocate, so that a movable barrel type structure is formed.
As shown in fig. 2 to 4, the horizontal well valve element 3 is a one-way valve, and includes a compression joint 31, a valve ball stop collar 32, a valve ball 33, a high-wear-resistance valve ball centering collar 34, a valve seat 35, a diversion sleeve 36, and an outer shell 37. The shell 37 is in threaded connection with the power plunger 5, the compression joint 31 is positioned at the end part of the shell 37 and partially extends into the shell 37, and the valve ball limiting sleeve 32, the valve ball 33, the high-wear-resistance valve ball centering sleeve 34, the valve seat 35 and the flow guide sleeve 36 are all arranged in the shell 37. The valve ball limiting sleeve 32 is abutted against the pressing connector 31, the high-abrasion valve ball centering sleeve 34 is abutted against the valve ball limiting sleeve 32, the high-abrasion valve ball centering sleeve 35 is shown in fig. 3 and 4, the high-abrasion valve ball centering sleeve 35 is in a circular ring shape, the inner wall of the high-abrasion valve ball centering sleeve 35 is provided with 4 grooves, and the 4 grooves are evenly distributed on the inner wall of the high-abrasion valve ball centering sleeve 35 along the circumferential direction at intervals. The valve ball 33 is matched in the high-wear-resistance valve ball centering sleeve 34 in a sliding mode, the valve ball 33 can move axially relative to the high-wear-resistance valve ball centering sleeve 34, the valve seat 35 is coaxially arranged with the valve ball, and the valve seat 35 is abutted against the high-wear-resistance valve ball centering sleeve 34. The guide sleeve 36 is abutted against the valve seat 35, and the other end of the guide sleeve 36 is abutted against the shell. The water flow can flow to the pressing connector 31 through the flow guide sleeve 36, and when the water flow flows in from the pressing connector, the valve ball 33 is pressed and reset to the end face of the inner hole of the valve seat 35, so that sealing is realized.
The one-way valve allows water flow only from right to left in the power plunger 5.
According to the underground movable barrel type single-acting pump for the rodless drainage and production system, high-pressure water is injected from an annular space between a central pipe and an outer pipe 13, the central pipe 14 is emptied, high-pressure water flows through a gap between a straight-through upper joint 2 and a power pump barrel 4 and the outer pipe 13, due to the fact that the outer pipe limiting joint 7 exists, water pressure acts on a power plunger 5 and the right end face of a drainage and production pump barrel, a horizontal well valve 3 is closed, a fixed valve 10 is opened, a plunger assembly moves upwards under the action of pressure until the limiting joint 8 is stopped against the outer pipe limiting joint 7, and at the moment, the pump machine conducts pumping work.
Injecting high-pressure water from the central pipe, emptying an annular space between the outer pipe and the central pipe, enabling the high-pressure water to enter the power pump barrel 5 through the plug 1, opening the horizontal well valve 3, closing the fixed valve 10, pressing the upper surface of the power plunger 4 and the upper surface of the discharging and mining plunger 11, and enabling the plunger assembly to move downwards until the right end face of the power plunger 5 is stopped against the outer pipe limiting joint 7.
As shown in fig. 1, the drainage pump barrel 6 is also provided with a well washing hole 9. When the plunger assembly moves upwards until the limit joint 8 is stopped against the outer pipe limit joint 7, the well washing hole 9 is flush with the upper surface of the fixed valve 10, and high-pressure water can enter the discharge and extraction pump barrel through the well washing hole 9, so that the pulverized coal sucked into the pump is flushed out of the central pipe.
According to the underground movable cylinder type single-acting pump for the rodless drainage and production system, the structure of the plunger assembly and the structure of the horizontal well valve piece can ensure that the plunger assembly is not easy to be eccentrically worn during movement, so that the service life is prolonged; the well washing hole on the discharge and recovery pump cylinder can perform the function of well washing with large discharge capacity, so that the pulverized coal is flushed out and the pump is prevented from being stuck; the valve ball is concentric with the valve seat, and the valve ball is high in opening and closing speed; the straight-through upper joint is arranged, the produced fluid containing more coal powder is discharged from the central pipe, the produced fluid channel is smooth, and the liquid discharge resistance is small.
Example two
In this embodiment, there may be two horizontal well valve members 3, and the two horizontal well valve members 3 are installed in series on the power plunger 5.
In this embodiment, there may be two fixed valves 10, and the two fixed valves 10 are connected in series to the extraction plunger 11.
The two valves are connected in series, so that the pollution resistance can be improved, and the valve rod is prevented from being abraded to clamp the valve ball when the spring-assisted valve ball operates;
although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the utility model and it is intended to cover in the claims the utility model as defined in the appended claims.
In the description of the present invention, it is to be understood that the terms "left", "right", "front", "rear", "upper", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present invention.
Claims (7)
1. A downhole moving barrel single acting pump for a rodless production system, comprising:
the fixed assembly comprises an outer pipe, a plug, a straight-through upper joint, a power pump cylinder, an outer pipe limiting joint, a fixed valve, a discharging and mining plunger and a liquid suction pipe, wherein the plug is positioned at the leftmost side and is connected with a central pipe of the rodless discharging and mining system;
plunger subassembly, including horizontal well valve member, power plunger, row adopt pump barrel, spacing joint, the horizontal well valve member with the power plunger is connected, the power plunger is established in the power pump barrel, the power plunger with power pump barrel transition fit, the right-hand member portion of power plunger with arrange and adopt the pump barrel and connect, arrange and adopt the plunger part and stretch into arrange in adopting the pump barrel, just arrange adopt the plunger with arrange and adopt pump barrel transition fit, spacing joint is established on arranging and adopts pump barrel outer wall, and is located outer tube spacing joint right-hand.
2. A downhole moving barrel single acting pump for a rodless production system according to claim 1, wherein the horizontal well valve member comprises: the high-abrasion valve ball centering sleeve is arranged in the high-abrasion valve ball centering sleeve, the valve ball is in sliding fit with the high-abrasion valve ball centering sleeve, the valve seat is in stopping abutting with the high-abrasion valve ball centering sleeve, the valve ball is concentric with the valve seat, and the flow guide sleeve is in stopping abutting with the valve seat.
3. The downhole moving barrel single acting pump for a rodless production system according to claim 2, wherein the high wear valve ball centralizing sleeve is a hollow ring, and the inner wall of the high wear valve ball centralizing sleeve is further provided with a plurality of grooves spaced circumferentially along the high wear valve ball centralizing sleeve.
4. The single acting pump of the downhole moving barrel type for a rodless production system according to claim 1, further comprising a well wash hole provided on the production pump barrel.
5. The downhole moving barrel single acting pump for a rodless production string system as claimed in claim 1, further comprising a straight-through top sub, wherein one end of the straight-through top sub is connected to the plug and the other end is connected to the power pump barrel.
6. A downhole moving barrel single acting pump for a rodless production system according to claim 1, wherein there may be two of the horizontal well valve members, and two of the horizontal well valve members are installed in series in the power plunger.
7. A single acting pump as claimed in claim 1, wherein there are two fixed valves, two of which are mounted in series in the extraction plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122905744.6U CN216198877U (en) | 2021-11-25 | 2021-11-25 | Underground moving cylinder type single-action pump for rodless drainage and production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122905744.6U CN216198877U (en) | 2021-11-25 | 2021-11-25 | Underground moving cylinder type single-action pump for rodless drainage and production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216198877U true CN216198877U (en) | 2022-04-05 |
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ID=80913421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122905744.6U Active CN216198877U (en) | 2021-11-25 | 2021-11-25 | Underground moving cylinder type single-action pump for rodless drainage and production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216198877U (en) |
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2021
- 2021-11-25 CN CN202122905744.6U patent/CN216198877U/en active Active
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