Special hydraulic tool for disassembling and assembling compressor air valve

Abstract

The utility model relates to the field of disassembly and assembly of compressor air valves, in particular to a special hydraulic tool for disassembly and assembly of compressor air valves, which comprises two pull rods, a hydraulic device, a long-strip-shaped base and a manual hydraulic pump. Through holes connected with air valve cylinder bolts are formed in the two ends of the base. The hydraulic device comprises a hydraulic cavity, a piston and a gland, the piston slides in the hydraulic cavity in a sealed mode, and a piston rod provided with a supporting block and connected with a base round hole is arranged at the bottom. The gland is hermetically and fixedly connected to the top of the hydraulic cavity, and an injection port connected with the manual hydraulic pump is formed in the center. The pull rod penetrates through positioning holes in the two ends of the gland from top to bottom, and external threads at the bottom correspond to screw threads of the valve cover. Hydraulic pressure is used, the stress direction of the air valve and the pull rod are located on the same straight line, force transmission efficiency is improved, jamming caused by a small gap between the air valve and the air cylinder wall and carbon deposition is overcome, dismounting efficiency is improved, uneven stress of the pull rod and the air valve is avoided, and the service life of the dismounting tool and the air valve is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of compressor valve disassembly and assembly, specifically to a hydraulic special tool for disassembling and assembling compressor valves. Background Technology

[0002] In the process of oil and gas field development, natural gas compressor injection for oil recovery is a common technical means. As a key component of the natural gas compressor, the gas valve directly affects the injection time, injection volume, and injection effect if it malfunctions, and must be inspected and repaired in a timely manner.

[0003] During the inspection and maintenance of air valves, the following problems were encountered during the disassembly and assembly of air valves:

[0004] 1. During disassembly, due to the small gap between the valve cover and the cylinder wall, and the varying degrees of carbon buildup on the cylinder wall after long-term operation, the valve cover is prone to jamming, making it difficult to disassemble manually and reducing work efficiency.

[0005] 2. When jamming occurs, maintenance personnel often use a hammer to strike the valve cover's pull rod, increasing the workload. Furthermore, the uneven force caused by striking can easily lead to bending, breakage, or damage to the pull rod, and can also damage the valve and valve cover, reducing their service life. Summary of the Invention

[0006] To address the technical problem of jamming during valve cover disassembly, and the potential damage to the pull rod, valve, and valve cover caused by hammering when attempting to remove jamming, this invention proposes a specialized hydraulic tool for disassembling and assembling compressor valves. This invention uses hydraulics instead of manual labor, increasing the force required to pull the valve cover; it also ensures that the force direction on the valve cover is aligned with the pull rod, improving force transmission efficiency; and it avoids uneven force distribution caused by hammering, thus extending the service life of the disassembly tool, valve, and valve cover.

[0007] The technical solution of this utility model is:

[0008] A hydraulic tool for disassembling and assembling compressor valves includes: two levers, a hydraulic device, a long strip base, and a manual hydraulic pump.

[0009] The base has a circular hole at its center, and the two ends of the base have symmetrical through holes for bolts to be fixedly connected to the air valve cylinder.

[0010] The bottom end of the pull rod is provided with an external thread, and the top end of the pull rod is provided with a handle perpendicular to the pull rod.

[0011] The hydraulic device includes a hydraulic chamber, a piston, and a pressure cap. The piston is in a sealed sliding fit with the inner wall of the hydraulic chamber. The bottom of the piston has a piston rod extending downwards corresponding to the circular hole. The pressure cap is threadedly fixed to the top of the hydraulic chamber. The pressure cap has symmetrical positioning holes at both ends and an injection port in the center for connection with the manual hydraulic pump. The piston and the hydraulic chamber are sealed with O-rings, and the pressure cap is sealed with the hydraulic chamber with O-rings.

[0012] The bottom end of the piston rod is slidably connected to a circular hole in the center of the base, and a support block is provided near the bottom end of the piston rod.

[0013] The pull rod slides through the positioning hole from top to bottom, and the external thread at the bottom of the pull rod corresponds to the thread of the air valve cover.

[0014] The base has a raised section at the top and a groove at the bottom.

[0015] The pull rod and base are made of 20# steel.

[0016] This invention uses hydraulics instead of manual labor, increasing the force of the pulling cylinder while ensuring that the force direction of the valve is aligned with the pull rod, thus improving force transmission efficiency. It overcomes the jamming caused by the small gap between the valve and the cylinder wall and carbon buildup from prolonged operation, thereby improving disassembly efficiency. Furthermore, because the force on the valve cover is aligned with the pull rods at both ends, and there is no longer a need to strike the pull rods to overcome jamming, uneven force distribution between the pull rod and the valve is avoided, extending the service life of both the disassembly tool and the valve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydraulic special tool for disassembling and assembling compressor valves.

[0018] The attached figures are labeled as follows: 1-pull rod, 11-handle, 2-hydraulic device, 21-hydraulic cavity, 22-piston, 23-pressure cap, 24-piston rod, 25-support block, 26-positioning hole, 27-injection port, 3-base, 31-round hole, 32-through hole. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] A special hydraulic tool for disassembling and assembling compressor valves, such as Figure 1 As shown, it includes two tie rods 1, a hydraulic device 2, a long strip base 3, and a manual hydraulic pump.

[0021] The hydraulic device includes a hydraulic chamber 21, a piston 22, and a gland 23. The piston 22 is installed inside the hydraulic chamber 21 and sealed to the hydraulic chamber 21 by an O-ring. It can move linearly along the axial direction within the hydraulic chamber 21 under the action of hydraulic fluid. A piston rod 24 is provided at the bottom of the piston 22, and a support block 25 is provided near the bottom end of the piston rod 24.

[0022] The pressure cap 23 is threadedly fixed to the top of the hydraulic cavity 21 and sealed to the hydraulic cavity 21 with an O-ring. The pressure cap 23 has symmetrical positioning holes 26 at both ends, through which the pull rod 1 passes from top to bottom. This restricts the movement of the pull rod 1 to be parallel to the movement of the piston 22, ensuring that the force on the pull rod 1 is directed along the axis. This improves the efficiency of force transmission and work efficiency, and maximizes the protection against deformation, damage, or breakage of the special disassembly and assembly tools.

[0023] The pressure cap 23 has an injection port 27 in the center. A manual hydraulic pump injects hydraulic fluid into the hydraulic chamber 21 through the injection port 27, providing hydraulic force to pull out the valve cover. This provides a greater force than traditional manual pulling. This avoids the need to use methods such as hammering when the valve cover cannot be pulled out, which leads to decreased work efficiency and damage to special tools, valves, and valve covers.

[0024] Specifically, positioning hole 26 is a Φ30 through hole.

[0025] The central part of the base 3 has a raised upper section and a groove at the bottom, providing space for the pulled-out valve cover. The base 3 has a circular hole 31 in the center, through which the support block 25 supports the base 3 when the outer end of the piston rod 24 is inserted. The base 3 has symmetrical through holes 32 at both ends, through which the cylinder bolts pass, and the base 3 is fixedly connected to the cylinder by the cooperation of bolts and nuts.

[0026] Specifically, the base 3 is made of 20# steel and has dimensions of 320mm in length, 50mm in width, and 20mm in height. It has through holes 32Φ30 at both ends and a central circular hole 31 with a diameter of Φ22.

[0027] The bottom end of the pull rod 1 is provided with an external thread, and the top end of the pull rod 1 is provided with a handle 11 perpendicular to the pull rod.

[0028] Specifically, the pull rod 1 is made of 20# steel and has an M9×15mm thread at the bottom.

[0029] When using this utility model to disassemble the valve cover of the air valve, the following steps need to be performed:

[0030] The first step is to install the base 3 on the cylinder flange end face, fit the through hole 32 onto the cylinder bolts, and fix the base 3 to the cylinder by the cooperation of bolts and nuts.

[0031] The second step is to insert the outer end of the piston rod 24 into the round hole 31 until the support block 25 is supported on the upper surface of the base 3.

[0032] The third step is to insert the two pull rods 1 into the positioning holes 26 from top to bottom, passing through both sides of the long strip base 3, and the bottom thread of the pull rod 1 is connected to the threaded connection of the air valve cover.

[0033] Fourth, connect the manual hydraulic pump to the injection port 27 to inject hydraulic fluid into the hydraulic chamber 21, pushing the piston 22. Since the support block 25 supports the base 3 and restricts the movement of the piston 22, the hydraulic chamber 21 and the pressure cap 23 move away from the base 3 under the push of the hydraulic fluid. In turn, the pressure cap 23 pushes the handle 11 to drive the pull rod 1 to move, pulling out the valve cover.

[0034] It should be noted that the specific embodiments described above enable those skilled in the art to gain a more comprehensive understanding of this utility model, but do not limit this utility model in any way. Therefore, although this specification has described this utility model in detail with reference to the accompanying drawings and embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model. In short, all technical solutions and improvements that do not depart from the spirit and scope of this utility model should be covered within the protection scope of this utility model patent.

Claims

1. A hydraulic special tool for disassembling a compressor valve, characterized in that, Comprise: Two pull rods, hydraulic device, long strip base, hand hydraulic pump; The center of the base is provided with a round hole, and the two ends of the base are symmetrically provided with through holes for fixing and connecting bolts of the air valve cylinder; The bottom end of the pull rod is provided with an external thread, and the top end of the pull rod is provided with a handle; The hydraulic device comprises a hydraulic cavity, a piston and a gland, the piston is in sealing sliding fit with the inner wall of the hydraulic cavity, the bottom of the piston is provided with a piston rod extending downward corresponding to the round hole, the gland is fixedly connected to the top of the hydraulic cavity, the two ends of the gland are symmetrically provided with positioning holes, and the center is provided with an injection port connected with the hand hydraulic pump; The bottom end of the piston rod is slidably connected to the round hole in the center of the base, the pull rod is slidably passed through the positioning hole from top to bottom, and the external thread at the bottom end of the pull rod corresponds to the thread of the air valve cover.

2. A hydraulic special tool for disassembling and assembling a compressor valve according to claim 1, characterized in that, The piston and the hydraulic cavity are sealed by O-rings, and the gland and the hydraulic cavity are sealed by O-rings.

3. A hydraulic tool for disassembling a compressor valve according to claim 1, wherein The position close to the outer end of the piston rod is provided with a supporting block.

4. The hydraulic tool for disassembling and assembling the gas valve of the compressor according to claim 1, wherein, The handle is perpendicular to the pull rod.

5. The hydraulic tool for disassembling and assembling the gas valve of the compressor according to claim 1, wherein, The central part of the base is convex upward and is provided with a groove downward.

6. A hydraulic tool for disassembling a compressor valve according to claim 1, wherein The gland is fixedly connected to the top of the hydraulic cavity by threads.

7. A hydraulic tool for disassembling a compressor valve according to claim 1, wherein The pull rod and the base are made of 20# steel material.

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