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CN-224214345-U - Underground pump body structure for hydraulic rodless drainage and production system

CN224214345UCN 224214345 UCN224214345 UCN 224214345UCN-224214345-U

Abstract

The utility model discloses a downhole pump body structure for a hydraulic rodless drainage system, which relates to the technical field of oil extraction, comprises a sleeve, the upper side of the sleeve is movably connected with a piston rod, the lower side of the sleeve is movably connected with a fixed plunger of the oil pump, and two sides of the sleeve are both connected with a mounting frame. According to the utility model, through the structure, the mounting frames are fixed on the two sides of the sleeve, the filter screen plate is arranged in the mounting frames, impurities can be filtered, the flow speed is primarily reduced, liquid enters the first slow flow plate and the second slow flow plate, the slow flow grooves are formed in the first slow flow plate and the second slow flow plate and are used for guiding the flowing direction of the liquid, so that the liquid can be uniformly dispersed and the flow speed is reduced, then the liquid is further reduced in flow speed through the diffuser and is stably led into the pump body, and therefore the problems that the pump body is damaged due to large fluctuation of the flow speed and pressure impact in the process of the liquid entering the pump body from the screen pipe are solved, and the overall performance and the service life of the system are improved.

Inventors

  • LI HAO

Assignees

  • 青岛林汇能源装备有限公司

Dates

Publication Date
20260508
Application Date
20250624

Claims (7)

  1. 1. The underground pump body structure for the hydraulic rodless drainage and extraction system comprises a sleeve (1) and is characterized in that a piston rod (2) is movably connected to the upper side of the sleeve (1), an oil pump fixing plunger (3) is movably connected to the lower side of the sleeve (1), two sides of the sleeve (1) are connected with a mounting frame (4), a fixing assembly (9) is arranged between the mounting frame (4) and the sleeve (1), a filter screen plate (5) is arranged in the mounting frame (4), a positioning assembly (10) is arranged on one side of the mounting frame (4), the filter screen plate (5) is slidably connected with the mounting frame (4) through the positioning assembly (10), and a slow flow assembly (6) is arranged on one side, located in the filter screen plate (5), of the mounting frame (4). The slow flow assembly (6) comprises a first slow flow plate (61), the first slow flow plate (61) is arranged on one side, close to the filter screen plate (5), in the installation frame (4), a second slow flow plate (62) is arranged on one side, located in the first slow flow plate (61), of the installation frame (4), and a diffuser (64) is arranged on one side, located in the second slow flow plate (62), of the installation frame (4).
  2. 2. The underground pump body structure for the hydraulic rodless drainage and mining system of claim 1, wherein the first slow flow plate (61) and the second slow flow plate (62) are obliquely arranged, the first slow flow plate (61) and the second slow flow plate (62) are alternately arranged, and one sides of the first slow flow plate (61) and one side of the second slow flow plate (62) are respectively provided with a slow flow groove (63).
  3. 3. The underground pump body structure for the hydraulic rodless drainage and mining system of claim 1, wherein the two sides of the sleeve (1) are fixedly connected with first connecting blocks (7), the two sides of the mounting frame (4) are fixedly connected with second connecting blocks (8), and the fixing assembly (9) is arranged between the first connecting blocks (7) and the second connecting blocks (8).
  4. 4. The hydraulic rodless drainage and mining system is of a downhole pump body structure according to claim 3, wherein the fixing assembly (9) comprises a butt joint block (91), the butt joint block (91) is fixedly connected to one side of the first connecting block (7), a butt joint groove (92) is formed in one side of the second connecting block (8), the butt joint block (91) is movably connected with the butt joint groove (92), a positioning groove (94) is formed in the butt joint block (91), a positioning clamp (93) is movably connected to the inside of the positioning groove (94), and the positioning clamp (93) is slidably connected to the inside of the second connecting block (8).
  5. 5. The underground pump body structure for the hydraulic rodless drainage and production system of claim 4, wherein the top end of the second connecting block (8) is fixedly connected with a first motor (96), the output end of the first motor (96) is fixedly connected with a first screw (95), the first screw (95) is rotatably connected inside the second connecting block (8), and one side of the positioning clamp (93) is in threaded connection with the first screw (95).
  6. 6. The underground pump body structure for the hydraulic rodless drainage and mining system of claim 1, wherein the positioning assembly (10) comprises a guide frame (101), the guide frame (101) is fixedly connected to two sides of the installation frame (4), one side of the guide frame (101) is fixedly connected with a second motor (102), the output end of the second motor (102) is fixedly connected with a second screw (103), the second screw (103) is rotatably connected to the inner side of the guide frame (101), a transmission plate (104) is connected to the outer surface of the second screw (103) in a threaded mode, one side of the transmission plate (104) is in sliding connection with the guide frame (101), and the other side of the transmission plate (104) is installed on the filter screen plate (5).
  7. 7. The hydraulic rodless drainage and mining system with the underground pump body structure according to claim 6, wherein one side of the filter screen plate (5) is fixedly connected with a mounting block (105), and one side of the transmission plate (104) is fixedly connected with the mounting block (105) through a screw.

Description

Underground pump body structure for hydraulic rodless drainage and production system Technical Field The utility model belongs to the technical field of oil extraction, and particularly relates to an underground pump body structure for a hydraulic rodless drainage and extraction system. Background With the continuous development of oil and gas extraction technology, especially for oil and gas reservoir development under complex geological conditions, the traditional sucker-rod pump oil extraction technology gradually reveals the limitations of the technology, especially in highly inclined wells, horizontal wells and wells containing corrosive media, heavy oil, high sand content and other special geological conditions, and the sucker-rod pump oil extraction technology often faces the problems of serious eccentric wear of a sucker rod, high maintenance cost, short equipment life and the like. Therefore, hydraulic rodless drainage systems have been developed as an effective way to solve these problems. For example, chinese patent publication No. CN207315317U discloses a rod-free oil production string of an oil pumping well, which comprises a polish rod, a hydraulic plunger pump, a concentric double pipe, a double plunger oil pump, a sieve tube and an oil pipe which are sequentially connected from top to bottom, wherein the upper end of the polish rod is connected with the horsehead of the oil pumping unit, the lower end of the polish rod is connected with a piston connecting rod of the hydraulic plunger pump, and the hydraulic plunger pump, the concentric double pipe and the double plunger oil pump are communicated to form an inner runner and an outer runner. The problems of high one-time investment cost, complex system structure, low stability and complex field implementation operation existing in the existing submersible direct-drive screw pump, submersible linear motor rodless oil extraction and water-based hydraulic rodless oil extraction process are solved, and the problems still exist that the improvement is needed, particularly, in the process that liquid enters a pump body from a screen pipe, the corresponding slow flow device is lacked to effectively regulate and control, so that the fluctuation of flow velocity is large, meanwhile, the pressure impact phenomenon is accompanied, and all the adverse factors can cause potential damage to the pump body, so that the overall performance and the service life of the system are influenced. Disclosure of utility model Aiming at the problems in the background art, the utility model aims to provide an underground pump body structure for a hydraulic rodless drainage system so as to solve the problems in the background art. The technical aim of the utility model is realized by the following technical scheme: The hydraulic rodless drainage and extraction system adopts an underground pump body structure and comprises a sleeve, wherein a piston rod is movably connected to the upper side of the sleeve, an oil pump fixing plunger is movably connected to the lower side of the sleeve, two sides of the sleeve are respectively connected with a mounting frame, a fixing assembly is arranged between the mounting frame and the sleeve, a filter screen plate is mounted in the mounting frame, a positioning assembly is arranged on one side of the mounting frame, the filter screen plate is in sliding connection with the mounting frame through the positioning assembly, and a slow flow assembly is arranged on one side of the mounting frame, which is positioned on the filter screen plate; The slow flow assembly comprises a first slow flow plate, the first slow flow plate is arranged on one side, close to the filter screen plate, in the installation frame, a second slow flow plate is arranged on one side, located in the first slow flow plate, of the installation frame, and a diffuser is arranged on one side, located in the second slow flow plate, of the installation frame. As the preferable technical scheme, first slow flow board and second slow flow board are slope setting, and first slow flow board and second slow flow board set up in turn, the chute has all been seted up to one side of first slow flow board and second slow flow board. As the preferred technical scheme, the equal fixedly connected with first connecting block in sheathed tube both sides, the equal fixedly connected with second connecting block in both sides of installing the frame, fixed subassembly establishes between first connecting block and second connecting block, fixed subassembly includes the butt joint piece, butt joint piece fixed connection is in one side of first connecting block, the butt joint groove has been seted up to one side of second connecting block, butt joint piece and butt joint groove swing joint, the constant head tank has been seted up to the inside of butt joint piece, the inside swing joint of constant head tank has the locating clip, locating clip sliding connection is in the inside of se