A workover high pressure hydraulic valve locking device
Patent Information
- Application Number
- CN202611338861.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-31
- Publication Date
- 2026-10-09
AI Technical Summary
[0005]本发明的目的是为了解决现有技术中存在液压油供给装置通常采用泵送或重力供油方式，但在高压或特殊工况下，容易出现供油不稳定、密封不严导致泄漏等问题
1、本发明通过启动活动条的同时，活动条带动方块移动，从而带动滚轮在三角块底部的斜槽内部滑动，滑动的时候活动条向前移动的同时向下移动，此时通过限位伸缩杆三带动活动块在竖板的内部向下移动，限位伸缩杆三对活动条进行限位，当活动块向下移动的时候带动U型块一向下移动，从而对进油盒进行固定，当滚轮移动的越远，U型块一夹持的越紧，同时在弹簧二与限位伸缩杆一的相配合限位下使得活动块在向下移动的同时不会带动U型块一对进油盒进行持续的夹持，防止滚轮出现卡死的情况。
Smart Images
Figure CN122880803A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of well workover equipment technology, and in particular to a well workover high-pressure hydraulic valve locking device. Background Technology
[0002] Oil well workover operations are complex, and downhole hydraulic components such as hydraulic valves and cylinders are subjected to high-pressure oil impacts and equipment vibration loads for a long time. During the operation, it is necessary to reliably clamp and lock the hydraulic valve body and hydraulic cylinder body to prevent high pressure fluctuations and mechanical vibrations from causing valve body displacement and loosening, and oil leakage, so as to ensure the continuous and stable operation of the entire well workover hydraulic system. Therefore, the high-pressure hydraulic valve matching locking and fixing device is the core auxiliary structure of well workover hydraulic equipment.
[0003] Chinese Patent No. CN115929728A discloses a hydraulic component locking device for locking a moving rod, which is slidably connected to a hydraulic cylinder. The locking device includes a locking mechanism, which is fixedly positioned at the locking position of the moving rod. The locking mechanism comprises a locking frame, a insert plate, a sliding pin, a linkage sleeve, a guide rail, and a slider. This locking mechanism allows the insert plate to be inserted into the locking groove of the moving rod when the locking groove on the outer wall of the moving rod enters the locking channel of the guide sleeve, and the linkage sleeve rotates forward until the sliding pin is located at the end of the arc-shaped guide groove near the moving rod. The end of the insert plate away from the slider is then inserted into the locking groove of the moving rod, thus locking the position of the moving rod and improving its stability in a static state. This solves the problems of easy thread failure and poor locking stability associated with locking via threaded clamping.
[0004] In addition, the oil supply and sealing in the hydraulic system are also key issues. Hydraulic oil supply devices usually use pumping or gravity supply methods, but under high pressure or special working conditions, problems such as unstable oil supply and poor sealing leading to leakage are prone to occur. Existing hydraulic locking devices often lack the ability to dynamically adjust the hydraulic oil, and cannot achieve precise oil supply and sealing simultaneously during the clamping process, thereby reducing the reliability and efficiency of the system. Summary of the Invention
[0005] The purpose of this invention is to solve the problems in the prior art where hydraulic oil supply devices usually use pumping or gravity supply methods, but under high pressure or special working conditions, unstable oil supply and leakage due to poor sealing are likely to occur.
[0006] Existing hydraulic locking devices often lack the ability to dynamically adjust hydraulic oil, making it impossible to simultaneously achieve precise oil supply and sealing during clamping, thus reducing the reliability and efficiency of the system.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: a high-pressure hydraulic valve locking device for well workover, comprising: a base plate, a triangular block fixedly installed on the top of the base plate, an oil tank fixedly installed on the top of the base plate, an air bladder fixedly installed on the top of the base plate, an outer tube fixedly installed on one side of the air bladder, an oil outlet pipe fixedly installed on the inner wall of the air bladder near the outer tube, a limit rod fixedly installed inside the oil outlet pipe, a rubber ring movably sleeved on the outer surface of the limit rod, a spring fixedly installed on one side of the oil outlet pipe, two rubber rings fixedly installed on one side of the springs, the rubber rings having the same diameter as the oil outlet pipe, and a thicker pipe fixedly installed on the side of the air bladder away from the oil outlet pipe.
[0008] To better achieve the above objectives, the present invention adopts a further technical solution: when the airbag is not compressed, the rubber ring is attached to the outer surface of the limiting block under the limiting action of the spring, which can seal the oil outlet pipe. When the hydraulic cylinder is running, it can clamp and fix itself, and at the same time, it can squeeze the hydraulic oil inside the airbag into the U-shaped block on one side of the hydraulic cylinder.
[0009] To better achieve the above objectives, the present invention adopts a further technical solution: two vertical plates are fixedly installed on the top of the base plate, and movable blocks are slidably connected inside the two vertical plates. A limiting telescopic rod three is fixedly installed on one side of the movable block, and a movable strip is fixedly installed at one end of the limiting telescopic rod three. A roller is rotatably connected to the top of the movable strip, and the roller rotates at the bottom of the triangular block. A hydraulic cylinder is detachably installed on the top of the base plate.
[0010] To better achieve the above objectives, the present invention adopts a further technical solution: the limiting telescopic rod three drives the movable block to move downward inside the vertical plate, the limiting telescopic rod three limits the movable strip, and when the movable block moves downward, it drives the U-shaped block one to move downward.
[0011] To better achieve the above objectives, the present invention adopts a further technical solution: an oil inlet box is fixedly installed on one side of the hydraulic cylinder, two limiting telescopic rods are fixedly installed at the bottom of the movable bar, a U-shaped block is fixedly installed at the bottom of the two limiting telescopic rods, a threaded rod is movably embedded inside the U-shaped block, a limiting rod is movably embedded inside the U-shaped block, one end of the threaded rod is connected to a locking block through a bearing, a square block is fixedly installed on the outer surface of the hydraulic cylinder, and the locking block is located on one side of the square block.
[0012] To better achieve the above objectives, the present invention adopts a further technical solution: by rotating the threaded rod under the limitation of the second limiting rod, the clamping block moves to one side. At this time, the clamping block holds the square block inside the second U-shaped block, and the second U-shaped block can be connected to the clamping block.
[0013] To better achieve the above objectives, the present invention adopts a further technical solution: two springs are fixedly installed at the bottom of the movable block, a U-shaped block is fixedly installed at the bottom of the two springs, a pressure strip is fixedly installed on one side of the U-shaped block, the pressure strip is located at the top of the airbag, and a thick tube is fixedly installed on one side of the airbag, the thick tube being in contact with one side of the fuel tank.
[0014] To better achieve the above objectives, the present invention adopts a further technical solution: under the cooperation of the second spring and the first limiting telescopic rod, the movable block will not continuously clamp the U-shaped block pair of oil inlet boxes while moving downward, thus preventing the rollers from getting stuck.
[0015] To better achieve the above objectives, the present invention adopts a further technical solution: a thin tube is fixedly installed on one side of the oil outlet pipe, one end of the thin tube is fixedly connected to the inside of the oil inlet box, and multiple limiting blocks are fixedly installed on the inner wall of the oil outlet pipe, with the rubber ring located on one side of the multiple limiting blocks.
[0016] To better achieve the above objectives, the present invention adopts a further technical solution: the hydraulic oil inside the airbag is squeezed into the inside of the oil inlet pipe and enters the inside of the oil inlet box through the outer pipe, and the limiting block limits the rubber ring.
[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. This invention activates the movable bar, which in turn moves the block, causing the roller to slide inside the inclined groove at the bottom of the triangular block. During this sliding motion, the movable bar moves forward and downward simultaneously. At this time, the limiting telescopic rod three causes the movable block to move downward inside the vertical plate, limiting the movable bar. When the movable block moves downward, it causes the U-shaped block one to move downward, thus fixing the oil inlet box. The further the roller moves, the tighter the U-shaped block one clamps. Simultaneously, the cooperation of the spring two and the limiting telescopic rod one prevents the movable block from continuously clamping the U-shaped block one while moving downward, thus preventing the roller from jamming.
[0018] 2. In this invention, when the movable block moves downward, it drives the pressure bar to move downward. At this time, the pressure bar squeezes the airbag. After squeezing, the oil inside the oil tank is absorbed into the airbag by the suction force of the squeezed airbag. At the same time, the squeezing causes the rubber ring to slide on the outer surface of the limiting rod. At this time, the hydraulic oil inside the airbag is squeezed into the oil outlet pipe and enters the oil inlet box through the outer pipe. The limiting block limits the rubber ring. When the airbag is not squeezed, the rubber ring adheres to the outer surface of the limiting block under the limiting action of the spring, which can seal the oil outlet pipe.
[0019] 3. When the hydraulic cylinder is running, the present invention can clamp and fix itself, and at the same time, it can squeeze the hydraulic oil inside the air bag into the U-shaped block one on one side of the hydraulic cylinder. After the movable bar is picked up and placed directly below the U-shaped block one, the locking block is moved to one side by rotating the threaded rod under the limit of the limit rod two. At this time, the locking block clamps the block inside the U-shaped block two. Attached Figure Description
[0020] Figure 1 A three-dimensional structural schematic diagram of a well workover high-pressure hydraulic valve locking device provided by the present invention; Figure 2 This is a side view of a locking device for a high-pressure hydraulic valve during well repair, provided by the present invention. Figure 3 A schematic diagram of the internal structure of the oil outlet pipe of a high-pressure hydraulic valve locking device for well workover provided by the present invention; Figure 4 This invention provides an enlarged structural schematic diagram of point A of a high-pressure hydraulic valve locking device for well workover; Figure 5 This is a right-side structural schematic diagram of a well workover high-pressure hydraulic valve locking device provided by the present invention; Figure 6 A top view schematic diagram of a high-pressure hydraulic valve locking device for well workover provided by the present invention; Figure 7 This invention provides a front view schematic diagram of a high-pressure hydraulic valve locking device for well workover. Figure 8 This is a side view schematic diagram of a high-pressure hydraulic valve locking device for well repair provided by the present invention.
[0021] Legend: 101. Base plate; 102. Oil tank; 103. Airbag; 104. Oil outlet pipe; 1041. Outer pipe; 105. Spring 1; 106. Limiting rod 1; 107. Limiting block; 108. Rubber ring; 109. Thick pipe; 110. Thin pipe; 111. Oil inlet box; 112. Hydraulic cylinder; 113. Vertical plate; 114. Movable block; 115. Pressure strip; 116. Spring 2; 117. Limiting telescopic rod 1; 118. U-shaped block 1; 119. Square block; 120. Triangular block; 121. Roller; 122. Movable strip; 123. Limiting telescopic rod 2; 124. U-shaped block 2; 125. Threaded rod; 126. Limiting rod 2; 127. Locking block; 128. Limiting telescopic rod 3. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0023] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] Please see Figures 1 to 8 A well workover high-pressure hydraulic valve locking device includes: a base plate 101, a triangular block 120 fixedly installed on the top of the base plate 101, an oil tank 102 fixedly installed on the top of the base plate 101, an airbag 103 fixedly installed on the top of the base plate 101, an outer pipe 1041 fixedly installed on one side of the airbag 103, an oil outlet pipe 104 fixedly installed on the inner wall of the airbag 103 near the outer pipe 1041, a limit rod 106 fixedly installed inside the oil outlet pipe 104, a rubber ring 108 movably sleeved on the outer surface of the limit rod 106, a spring 105 fixedly installed on one side of the oil outlet pipe 104, a rubber ring 108 fixedly installed on one side of the two springs 105, the rubber ring 108 having the same diameter as the oil outlet pipe 104, and a thick pipe 109 fixedly installed on the side of the airbag 103 away from the oil outlet pipe 104.
[0025] When in use, when the airbag 103 is not compressed, the rubber ring 108 is attached to the outer surface of the limiting block 107 under the limiting action of the spring 105, which can seal the oil outlet pipe 104. When the hydraulic cylinder 112 is running, it can clamp and fix itself, and at the same time, it can squeeze the hydraulic oil inside the airbag 103 into the U-shaped block 118 on one side of the hydraulic cylinder 112.
[0026] like Figures 1 to 8 As shown, in one embodiment, two vertical plates 113 are fixedly installed on the top of the base plate 101. Movable blocks 114 are slidably connected inside the two vertical plates 113. A limiting telescopic rod 128 is fixedly installed on one side of the movable block 114. A movable strip 122 is fixedly installed at one end of the limiting telescopic rod 128. A roller 121 is rotatably connected to the top of the movable strip 122. The roller 121 rotates at the bottom of the triangular block 120. A hydraulic cylinder 112 is detachably installed on the top of the base plate 101. The limiting telescopic rod 128 drives the movable block 114 to move downward inside the vertical plate 113. The limiting telescopic rod 128 limits the movable strip 122. When the movable block 114 moves downward, it drives the U-shaped block 118 to move downward.
[0027] like Figures 1 to 8As shown, an oil inlet box 111 is fixedly installed on one side of the hydraulic cylinder 112. Two limiting telescopic rods 123 are fixedly installed at the bottom of the movable bar 122. A U-shaped block 124 is fixedly installed at the bottom of the two limiting telescopic rods 123. A threaded rod 125 is movably embedded inside the U-shaped block 124. A limiting rod 126 is movably embedded inside the U-shaped block 124. One end of the threaded rod 125 is connected to a locking block 127 through a bearing. A square block 119 is fixedly installed on the outer surface of the hydraulic cylinder 112. The locking block 127 is located on one side of the square block 119. By rotating the threaded rod 125, the locking block 127 moves to one side under the limitation of the limiting rod 126. At this time, the locking block 127 clamps the square block 119 inside the U-shaped block 124, so that the U-shaped block 124 and the locking block 127 can be connected.
[0028] like Figures 1 to 8 As shown, two springs 116 are fixedly installed at the bottom of the movable block 114. A U-shaped block 118 is fixedly installed at the bottom of the two springs 116. A pressure strip 115 is fixedly installed on one side of the U-shaped block 118. The pressure strip 115 is located at the top of the airbag 103. A thick pipe 109 is fixedly installed on one side of the airbag 103. The thick pipe 109 is in contact with one side of the oil tank 102. Under the limiting of the springs 116 and the limiting telescopic rod 117, the movable block 114 will not drive the U-shaped block 118 to continuously clamp the oil inlet box 111 while moving downward, so as to prevent the roller 121 from getting stuck.
[0029] like Figures 1 to 8 As shown, a thin tube 110 is fixedly installed on one side of the oil outlet pipe 104. One end of the thin tube 110 is fixedly connected to the inside of the oil inlet box 111. Multiple limiting blocks 107 are fixedly installed on the inner wall of the oil outlet pipe 104. A rubber ring 108 is located on one side of the multiple limiting blocks 107. The hydraulic oil inside the airbag 103 is squeezed into the inside of the oil outlet pipe 104 and enters the inside of the oil inlet box 111 through the outer tube 1041. The limiting blocks 107 limit the rubber ring 108. In use, after picking up the movable bar 122, place it directly below the U-shaped block 118. Then, by rotating the threaded rod 125, the locking block 127 moves to one side under the limit of the limiting rod 126. At this time, the locking block 127 clamps the square block 119 inside the U-shaped block 124. When the movable bar 122 is activated, it moves the square block 119, thereby causing the roller 121 to slide inside the inclined groove at the bottom of the triangular block 120. While sliding, the movable bar 122 moves forward. Moving downwards, the movable block 114 moves downwards inside the vertical plate 113 via the limiting telescopic rod 128. The limiting telescopic rod 128 limits the movable bar 122. When the movable block 114 moves downwards, it drives the U-shaped block 118 downwards, thereby fixing the oil inlet box 111. The further the roller 121 moves, the tighter the U-shaped block 118 clamps. At the same time, under the limiting effect of the spring 116 and the limiting telescopic rod 117, the movable block 114 moves downwards while... The U-shaped block 118 will not continuously clamp the oil inlet box 111, preventing the roller 121 from jamming. When the movable block 114 moves downward, it drives the pressure bar 115 to move downward. At this time, the pressure bar 115 squeezes the airbag 103. After squeezing, the oil inside the oil tank 102 is absorbed into the airbag 103 by the suction force of the squeezed airbag 103. At the same time, the rubber ring 108 slides on the outer surface of the limit rod 106. At this time, the hydraulic oil inside the airbag 103 is squeezed into the oil pipe 1. The oil from inside 04 enters the oil inlet box 111 through the outer tube 1041. The limiting block 107 limits the rubber ring 108. When the airbag 103 is not compressed, the rubber ring 108 adheres to the outer surface of the limiting block 107 under the limiting action of the spring 105, which can seal the oil outlet pipe 104. When the hydraulic cylinder 112 is running, it can clamp and fix itself. At the same time, it can squeeze the hydraulic oil inside the airbag 103 into the U-shaped block 118 on one side of the hydraulic cylinder 112.
[0030] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.
Claims
1. A locking device for a high-pressure hydraulic valve during well workover, comprising: The base plate (101) is characterized in that a triangular block (120) is fixedly installed on the top of the base plate (101), an oil tank (102) is fixedly installed on the top of the base plate (101), an airbag (103) is fixedly installed on the top of the base plate (101), an outer tube (1041) is fixedly installed on one side of the airbag (103), and an oil outlet pipe (104) is fixedly installed on the inner wall of the airbag (103) near the outer tube (1041). An internally fixed limiting rod (106) is provided, and a rubber ring (108) is movably sleeved on the outer surface of the limiting rod (106). A spring (105) is fixedly installed on one side of the oil outlet pipe (104), and a rubber ring (108) is fixedly installed on one side of each of the two springs (105). The diameter of the rubber ring (108) is equal to that of the oil outlet pipe (104). A thick pipe (109) is fixedly installed on the side of the airbag (103) away from the oil outlet pipe (104).
2. The well workover high-pressure hydraulic valve locking device according to claim 1, characterized in that: Two vertical plates (113) are fixedly installed on the top of the base plate (101), and movable blocks (114) are slidably connected inside the two vertical plates (113). A limit telescopic rod (128) is fixedly installed on one side of the movable block (114).
3. The well workover high-pressure hydraulic valve locking device according to claim 2, characterized in that: One end of the limiting telescopic rod three (128) is fixedly installed with a movable bar (122), and the top of the movable bar (122) is rotatably connected with a roller (121). The roller (121) rotates at the bottom of the triangular block (120), and the top of the base plate (101) is detachably installed with a hydraulic cylinder (112).
4. The well workover high-pressure hydraulic valve locking device according to claim 3, characterized in that: An oil inlet box (111) is fixedly installed on one side of the hydraulic cylinder (112), and two limiting telescopic rods (123) are fixedly installed at the bottom of the movable bar (122). A U-shaped block (124) is fixedly installed at the bottom of the two limiting telescopic rods (123), and a threaded rod (125) is movably embedded inside the U-shaped block (124).
5. A well workover high-pressure hydraulic valve locking device according to claim 4, characterized in that: The U-shaped block 2 (124) is internally fitted with a limiting rod 2 (126), and one end of the threaded rod (125) is connected to a locking block (127) via a bearing. The outer surface of the hydraulic cylinder (112) is fixedly mounted with a square block (119), and the locking block (127) is located on one side of the square block (119).
6. A well workover high-pressure hydraulic valve locking device according to claim 5, characterized in that: Two springs (116) are fixedly installed at the bottom of the movable block (114), and a U-shaped block (118) is fixedly installed at the bottom of the two springs (116). A pressure strip (115) is fixedly installed on one side of the U-shaped block (118), and the pressure strip (115) is located at the top of the airbag (103).
7. A well workover high-pressure hydraulic valve locking device according to claim 6, characterized in that: A thick tube (109) is fixedly installed on one side of the airbag (103), and the thick tube (109) is in contact with one side of the fuel tank (102).
8. A well workover high-pressure hydraulic valve locking device according to claim 7, characterized in that: A thin tube (110) is fixedly installed on one side of the oil outlet pipe (104).
9. A well workover high-pressure hydraulic valve locking device according to claim 8, characterized in that: One end of the thin tube (110) is fixedly connected to the inside of the oil inlet box (111), and multiple limiting blocks (107) are fixedly installed on the inner wall of the oil outlet pipe (104).
10. A well workover high-pressure hydraulic valve locking device according to claim 9, characterized in that: The rubber ring (108) is located on one side of the plurality of limiting blocks (107).