Mounting and overhauling tool for piston rod and piston of reciprocating compressor

Abstract

The utility model discloses a reciprocating compressor piston rod and piston installation and maintenance tool, which belongs to the technical field of piston rod tools, and comprises a base and a piston rod, one end of the piston rod is provided with a thread groove, and the other end of the piston rod is provided with a piston. One side of the piston is provided with a pair of hole sites, the upper end of the base is provided with a placing position, the piston rod and the piston are embedded in the upper end of the placing position, one side of the base is fixedly connected with an internal thread ring, one end of the piston rod is connected with the internal thread ring through a thread groove and extends in a penetrating mode, and the upper end of the base is provided with three first shaft sleeves and a second shaft sleeve. The first shaft sleeve and the second shaft sleeve are arranged on the outer circumferential face of the piston rod and the outer circumferential face of the piston in a sleeved mode and fixed to the base through bolts, the piston rod and the piston can be dismounted and mounted, the mounting concentricity of the piston and the piston rod can be guaranteed, and the piston rod and the piston are effectively prevented from being damaged in the clamping and tightening process.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rod tooling, and more specifically to a tool for installing and repairing a piston rod and a piston of a reciprocating compressor. Background Art

[0002] A reciprocating compressor is a type of compressor that uses the reciprocating motion of the piston or diaphragm in the cylinder to periodically change the cylinder volume and achieve gas pressurization and transportation. It is a positive displacement compressor.

[0003] The piston rod and piston are important working parts of a reciprocating compressor. During the equipment maintenance, disassembly and installation process, if the maintenance personnel assemble improperly, resulting in a deviation in the concentricity of the piston and the piston rod installation, it will cause irreversible damage to the piston rod or the piston, making the compressor gas seal and cylinder seal poor, resulting in natural gas leakage. Therefore, the utility model provides a reciprocating compressor piston rod and piston installation and maintenance tool. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In response to the problems existing in the prior art, the purpose of the utility model is to provide a reciprocating compressor piston rod and piston installation and maintenance tool, which solves the problem in the prior art that during the maintenance, disassembly and installation of the piston rod, if the maintenance personnel assemble it improperly, the concentricity of the piston and piston rod installation will deviate, which will cause irreversible damage to the piston rod or piston, resulting in poor sealing of the compressor gas seal and cylinder, causing natural gas leakage.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A reciprocating compressor piston rod and piston installation and maintenance tool, comprising a base and a piston rod, one end of the piston rod is provided with a thread groove, the other end of the piston rod is provided with a piston, and one side of the piston is provided with a pair of holes;

[0009] The upper end of the base is provided with a placement position, the piston rod and the piston are embedded in the upper end of the placement position, one side of the base is fixedly connected with an internal thread ring, one end of the piston rod is connected to the internal thread ring through a thread groove and extends through it, and the upper end of the base is provided with three shaft sleeves 1 and one shaft sleeve 2, the shaft sleeves 1 and 2 are distributedly sleeved on the outer circumferential surfaces of the piston rod and the piston and fixed to the base through bolts;

[0010] The other end of the piston rod is provided with a nut, and one side of the nut is provided with a handle.

[0011] Furthermore, a pair of pins are fixedly connected to the side of the nut away from the handle, and the pins match the holes. A square hole is provided on the side of the nut close to the handle. A rectangular block is fixedly connected to one end of the handle, and the rectangular block matches the square hole.

[0012] Furthermore, the inner wall of the second sleeve is provided with a tetrafluoroethylene pad, and the tetrafluoroethylene pad is in contact with the outer circumferential surface of the piston.

[0013] Furthermore, threaded holes are provided on both sides of the base, and handles are threadedly connected to both sides of the base through the threaded holes.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] In this scheme, the internal thread ring and the base are connected by argon arc welding. The specifications of the internal thread ring match the specifications of the thread groove on the piston rod. When the thread groove on the piston rod is partially screwed into the internal thread ring and fixed, the internal thread ring is first ensured to be concentric with the piston rod by argon arc spot welding, and then fully welded. Subsequently, shaft sleeve one and shaft sleeve two are installed to limit the piston rod and piston. When the piston rod and piston need to be assembled, the handle is turned to provide a tightening torque. Through the internal thread ring, shaft sleeve one and shaft sleeve two, the piston rod is not easy to deviate from the concentricity of the piston piston during assembly, so as to avoid irreversible damage to the piston rod or piston piston, thereby improving the sealing of the compressor gas seal and cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the overall split of the utility model;

[0019] Figure 3 It is a schematic structural diagram of the utility model from another viewing angle.

[0020] Description of the numbers in the figure:

[0021] 1. Base; 11. Placement position; 12. Threaded hole; 13. Handle; 2. Piston rod; 21. Threaded groove; 22. Piston; 23. Hole position; 3. Internal thread ring; 4. Bushing 1; 5. Bushing 2; 51. Teflon pad; 6. Bolt; 7. Nut; 71. Pin; 72. Square hole; 8. Handle; 81. Rectangular block. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] Example

[0024] like Figure 1-3 As shown, a reciprocating compressor piston rod and piston installation and maintenance tool comprises a base 1 and a piston rod 2, one end of the piston rod 2 is provided with a thread groove 21, the other end of the piston rod 2 is provided with a piston 22, and one side of the piston 22 is provided with a pair of holes 23;

[0025] The upper end of the base 1 is provided with a placement position 11, the piston rod 2 and the piston 22 are embedded in the upper end of the placement position 11, one side of the base 1 is fixedly connected with an internal thread ring 3, one end of the piston rod 2 is connected to the internal thread ring 3 through a thread groove 21 and extends through it, and the upper end of the base 1 is provided with three shaft sleeves 1 4 and one shaft sleeve 2 5, the shaft sleeves 1 4 and the shaft sleeves 2 5 are distributed and sleeved on the outer circumferential surfaces of the piston rod 2 and the piston 22 and fixed to the base 1 through bolts 6;

[0026] A nut 7 is provided at the other end of the piston rod 2 , and a handle 8 is provided on one side of the nut 7 .

[0027] When in use, the internal thread ring 3 is connected to the base 1 by argon arc welding. The specifications of the internal thread ring 3 match the specifications of the thread groove 21 on the piston rod 2. When the thread groove 21 on the piston rod 2 is partially screwed into the internal thread ring 3 and fixed, the internal thread ring 3 is first ensured to be concentric with the piston rod 2 by argon arc spot welding, and then fully welded. Subsequently, the upper sleeve 1 4 and the sleeve 2 5 are installed to limit the piston rod 2 and the piston 22. When the piston rod 2 and the piston 22 need to be assembled, the handle 8 is turned to provide a tightening torque. Through the internal thread ring 3, the sleeve 1 4 and the sleeve 2 5, the piston rod 2 is not easy to deviate from the concentricity of the piston piston 22 during assembly, so as to avoid irreversible damage to the piston rod 2 or the piston piston 22, thereby improving the sealing of the compressor gas seal and the cylinder.

[0028] like Figure 3 As shown, a pair of pins 71 are fixedly connected to the side of the nut 7 away from the handle 8, and the pins 71 match the hole position 23. A square hole 72 is provided on the side of the nut 7 close to the handle 8, and a rectangular block 81 is fixedly connected to one end of the handle 8, and the rectangular block 81 matches the square hole 72.

[0029] When in use, the nut 7 is spliced ​​with one end of the piston rod 2 through the pin 71, and then the rectangular block 81 at one end of the handle 8 is embedded in the square hole 72 on one side of the nut 7. Then, the handle 8 is rotated to provide a tightening torque for the assembly of the piston rod 2 and the piston. The interlocking structure makes it convenient for people to assemble the handle 8 and the nut 7.

[0030] like Figure 2 As shown, the inner wall of the shaft sleeve 2 5 is provided with a tetrafluoroethylene pad 51 , and the tetrafluoroethylene pad 51 is in contact with the outer circumferential surface of the piston 22 .

[0031] When in use, the tetrafluoroethylene pad 51 is used to prevent the piston 22 from contacting the shaft sleeve 25 and causing damage.

[0032] like Figure 3 As shown, threaded holes 12 are provided on both sides of the base 1 , and handles 13 are threadedly connected to both sides of the base 1 through the threaded holes 12 .

[0033] When in use, the grip 13 is a pressing handle, which is used to offset the tightening torque applied by the operating handle 8 when the piston 22 and the piston rod 2 are assembled, thereby preventing the assembly tool from turning over.

[0034] In summary, the specific working process of this scheme is as follows: the internal thread ring 3 is connected to the base 1 by argon arc welding, and the specifications of the internal thread ring 3 match the specifications of the thread groove 21 on the piston rod 2. When the thread groove 21 on the piston rod 2 is partially screwed into the internal thread ring 3 and fixed, the internal thread ring 3 is first ensured to be concentric with the piston rod 2 by argon arc spot welding, and then fully welded, and then the upper sleeve 1 4 and the sleeve 2 5 are installed to limit the piston rod 2 and the piston 22. When the piston rod 2 and the piston 22 need to be assembled, the handle 8 is turned to provide a tightening torque. Through the internal thread ring 3, the sleeve 1 4 and the sleeve 2 5, the piston rod 2 is not easy to deviate from the concentricity of the piston piston 22 during assembly, so as to avoid irreversible damage to the piston rod 2 or the piston piston 22, thereby improving the sealing of the compressor gas seal and the cylinder.

[0035] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A reciprocating compressor piston rod and piston installation and maintenance tool, comprising a base (1) and a piston rod (2), characterized in that: A thread groove (21) is provided at one end of the piston rod (2), a piston (22) is provided at the other end of the piston rod (2), and a pair of holes (23) are provided on one side of the piston (22); The upper end of the base (1) is provided with a placement position (11), the piston rod (2) and the piston (22) are embedded in the upper end of the placement position (11), one side of the base (1) is fixedly connected with an internal thread ring (3), one end of the piston rod (2) is connected to the internal thread ring (3) through a thread groove (21) and extends through the internal thread ring, and the upper end of the base (1) is provided with three shaft sleeves (4) and one shaft sleeve (5), the shaft sleeves (4) and the shaft sleeves (5) are distributed and sleeved on the outer circumferential surfaces of the piston rod (2) and the piston (22) and are fixed to the base (1) through bolts (6); The other end of the piston rod (2) is provided with a nut (7), and one side of the nut (7) is provided with a handle (8).

2. A reciprocating compressor piston rod and piston installation and maintenance tool according to claim 1, characterized in that: A pair of pins (71) are fixedly connected to the side of the nut (7) away from the handle (8), and the pins (71) match the hole positions (23). A square hole (72) is provided on the side of the nut (7) close to the handle (8). A rectangular block (81) is fixedly connected to one end of the handle (8), and the rectangular block (81) matches the square hole (72).

3. A reciprocating compressor piston rod and piston installation and maintenance tool according to claim 1, characterized in that: The inner wall of the second shaft sleeve (5) is provided with a tetrafluoroethylene pad (51), and the tetrafluoroethylene pad (51) is in contact with the outer circumferential surface of the piston (22).

4. A reciprocating compressor piston rod and piston installation and maintenance tool according to claim 1, characterized in that: Threaded holes (12) are provided on both sides of the base (1), and handles (13) are threadedly connected to both sides of the base (1) through the threaded holes (12).

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