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CN-118008227-B - Pressurizing water injection device

CN118008227BCN 118008227 BCN118008227 BCN 118008227BCN-118008227-B

Abstract

The invention discloses a pressurizing water injection device which comprises a first pipe body, a second pipe body and a telescopic piece, wherein the second pipe body is arranged in the first pipe body, the telescopic piece is arranged in the second pipe body and can reciprocate along the axial direction of the second pipe body, the telescopic piece comprises a telescopic rod and a third pipe body connected with the telescopic rod, a guide assembly is arranged between the movable rod and the second pipe body, the guide assembly comprises a support piece, the support piece is provided with a first guide body and a second guide body, the surface of the movable rod is provided with a guide groove extending along the axial direction of the first guide body, and the first guide body and the second guide body are embedded into the guide groove so as to enable the first guide body and the second guide body to be arranged along the axial direction of the movable rod and to move along the guide groove. Through first guide body and second guide body can restrict the movable rod direction of movement to guarantee the axial displacement of movable rod along the second body, prevent to produce the skew between third body and the second body, guarantee the sealing performance between second body and the third body, thereby guarantee the pressure of annotating water.

Inventors

  • JIANG SHIJIE
  • ZHAO XING
  • LI WEI

Assignees

  • 迈为电机驱动科技（绍兴）有限公司

Dates

Publication Date
20260508
Application Date
20240315

Claims (8)

  1. 1. The utility model provides a pressurized water injection device, its characterized in that includes first body (100), second body (200) and extensible member, second body (200) are arranged in first body (100), extensible member is arranged in second body (200) and can follow the axial reciprocating motion of second body (200), second body (200) include first opening (201) and second opening (202), extensible member includes movable rod (400) and connects third body (300) of movable rod (400), the one end of third body (300) orientation first opening (201) is provided with water inlet (412), third body (300) orientation second opening (202) one end is provided with first check valve (320), second opening (202) department is provided with second check valve (110), be provided with the direction subassembly between movable rod (400) and second body (200), the direction subassembly includes the support piece, the support piece is provided with first direction body (400) and second body (400) are provided with direction groove (401) along the axial direction of extension of guide surface (401), the first guide body (500) and the second guide body (510) are embedded into the guide groove (401) so that the first guide body (500) and the second guide body (510) are arranged along the axial direction of the moving rod (400) and can move along the guide groove (401); Be provided with dwang (800) between first direction body (500) and second direction body (510), dwang (800) are including first end (801) and relative second end (802) towards movable rod (400), be provided with on dwang (800) to be close to first connecting rod (810) of first end (801), first direction body (500) be connected with second direction body (510) with second connecting rod (522) that first connecting rod (810) position corresponds, first connecting rod (810) are connected with second connecting rod (522) rotation, second end (802) department of dwang (800) are provided with the restriction rotating assembly of dwang (800).
  2. 2. The pressurized water injection device according to claim 1, wherein the limiting assembly comprises a plurality of first rotating blocks (900) which are annularly and equidistantly arranged so as to form a second rotating block (910), the first rotating blocks (900) and the second rotating blocks (910) can both rotate, the first rotating blocks (900) and the second rotating blocks (910) are arranged in a staggered manner, the first rotating blocks (900) and the second rotating blocks (910) are arranged along the circumferential direction of the moving rod (400), and the rotating rod (800) is connected with any one of the first rotating blocks (900).
  3. 3. The pressurized water injection device according to claim 2, wherein the first rotating block (900) comprises a first rotating plate (902), two sides of the first rotating plate (902) are provided with abutting portions (901) extending towards the second rotating block (910), and the thickness of the abutting portions (901) is larger than that of the first rotating plate (902) so that the abutting portions (901) abut against the second rotating block (910).
  4. 4. The pressurized water injection device according to claim 1, wherein the supporting member comprises a ring member (600) connected with the inner wall of the second pipe body (200), the ring member (600) is provided with a supporting block (700) extending towards the moving rod (400), a first mounting cavity (601) is arranged in the ring member (600), a second mounting cavity (701) is arranged in the supporting block (700), the first guiding body (500) and the second guiding body (510) are arranged in the second mounting cavity (701), the limiting assembly is arranged in the first mounting cavity (601), the first end (801) of the rotating rod (800) is arranged in the second mounting cavity (701), and the second end (802) of the rotating rod (800) is arranged in the first mounting cavity (601).
  5. 5. The pressurized water injection device according to claim 4, wherein the ring member (600) comprises two annular plates (610) connected to the inner wall of the second pipe body (200), the two annular plates (610) are arranged along the axial direction of the moving rod (400), a sealing ring (620) is arranged on one side, far away from the inner wall of the second pipe body (200), of the two annular plates (610), and the annular plates (610), the sealing ring (620) and the inner wall of the second pipe body (200) jointly enclose the first installation cavity (601).
  6. 6. The pressurized water injection device according to claim 4, wherein the supporting block (700) comprises two first side plates (710) and two second side plates (720), the first side plates (710) and the second side plates (720) enclose a quadrilateral structure, one surface of the supporting block (700) facing the annular component (600) is provided with a third side plate (730), the first side plates (710), the second side plates (720) and the third side plates (730) enclose a second installation cavity (701), the first guide body (500) and the second guide body (510) are both connected with a supporting seat (520), the supporting seat (520) is connected with a connecting rod (521), the connecting rod (521) is connected with the second connecting rod (522), the connecting rod (521) is connected with a guide rod (530), the third side plates (730) are provided with limit grooves (732), the guide rod (530) are embedded in the limit grooves (732), the limit grooves (732) are provided with a top plate (533), and one end (733) of the guide rod (530) is embedded in the limit grooves (732).
  7. 7. The pressurized water injector according to claim 6, wherein said guide rod (530) comprises a first section (531) connected to the connecting rod (521) and a second section (532) embedded in said limiting groove (732), said first section (531) being rotatably connected to said second section (532).
  8. 8. The pressurized water injector according to claim 6, wherein a rotating shaft is disposed in the supporting seat (520), and the first guide body (500) and the second guide body (510) are spheres and rotatably disposed in the supporting seat (520) through the rotating shaft.

Description

Pressurizing water injection device Technical Field The invention belongs to the technical field of oil extraction engineering, and particularly relates to a pressurizing water injection device. Background The invention of China patent application number 201910673546.6 discloses an underground reciprocating water injection device, which comprises a piston sleeve, a piston, a first one-way valve component and a second one-way valve component, wherein the piston sleeve is fixed in a well communicated with an oil layer, the upper end of the piston sleeve is provided with a water supply port communicated with water supply equipment, the lower end of the piston sleeve is provided with a water injection port communicated with the oil layer, the piston is in sliding fit with the piston sleeve in the piston sleeve, the outer wall of the piston is dynamically sealed with the inner wall of the piston sleeve, the piston is internally provided with a first water flow passage communicated with a space above the piston sleeve and a space below the piston sleeve in the piston sleeve, the first one-way valve component is arranged at the first water flow passage, and the second one-way valve component is arranged at the water injection port. The water injection device adopts two one-way valves to realize pressurized water injection, but the reciprocating movement of the piston can generate abrasion in the pressurized water injection process. If the piston moves, the piston is biased, so that the sealing performance of the piston is affected, and the pressure of the injected water is affected. Disclosure of Invention The invention aims at solving the technical problems and provides a pressurized water injection device capable of ensuring water injection pressure. The invention aims at providing a pressurizing water injection device which comprises a first pipe body, a second pipe body and a telescopic piece, wherein the second pipe body is arranged in the first pipe body, the telescopic piece is arranged in the second pipe body and can reciprocate along the axial direction of the second pipe body, the second pipe body comprises a first opening and a second opening, the telescopic piece comprises a moving rod and a third pipe body connected with the moving rod, one end of the third pipe body, which faces the first opening, is provided with a water inlet, one end of the third pipe body, which faces the second opening, is provided with a first one-way valve, the second opening is provided with a second one-way valve, a guide assembly is arranged between the moving rod and the second pipe body, the guide assembly comprises a support piece, the first guide body and the second guide body are arranged on the surface of the moving rod, the guide grooves axially extend along the moving rod, and the first guide body and the second guide body are embedded into the guide grooves so that the first guide body and the second guide body can move along the axial direction of the moving rod. In the invention, a rotating rod is arranged between the first guide body and the second guide body, the rotating rod comprises a first end facing the moving rod and a second end opposite to the first end, a first connecting rod close to the first end is arranged on the rotating rod, the first guide body and the second guide body are connected with a second connecting rod corresponding to the first connecting rod in position, the first connecting rod is connected with the second connecting rod in a rotating way, and a limiting assembly for limiting the rotation of the rotating rod is arranged at the second end of the rotating rod. In the invention, the limiting assembly comprises a plurality of first rotating blocks and second rotating blocks which are annularly and equidistantly arranged, the first rotating blocks and the second rotating blocks can rotate, the first rotating blocks and the second rotating blocks are arranged in a staggered manner, the first rotating blocks and the second rotating blocks are arranged along the circumferential direction of the moving rod, and the moving rod is connected with any one of the first rotating blocks. In the invention, the first rotating block comprises a first rotating plate, two sides of the first rotating plate are provided with abutting parts extending towards the second rotating block, and the thickness of each abutting part is larger than that of the first rotating plate so that each abutting part abuts against the corresponding second rotating block. In the invention, the support piece comprises an annular piece connected with the inner wall of the second pipe body, the annular piece is provided with a support block extending towards the moving rod, a first installation cavity is arranged in the annular piece, a second installation cavity is arranged in the support block, the first guide body and the second guide body are arranged in the second installation cavity, the limiting component is arranged in th