Reciprocating compressor piston rod protection device

Abstract

The present application relates to the technical fields of compressor piston rod maintenance, and provides a reciprocating compressor piston rod protection device, which comprises a base, the left side of the base is connected with a bottom plate, the upper part of the bottom plate is provided with an oil tank, an oil pipe connected to the gear oil pump is output from the oil tank, an oil pipe connected to the electromagnetic reversing valve is output from the gear oil pump, an oil pipe connected to the throttle valve is output from the electromagnetic reversing valve, an oil pipe connected to the hydraulic control check valve is output from the throttle valve, an oil pipe connected to the balance valve is output from the hydraulic control check valve, and an oil pipe connected to the lifting oil cylinder is output from the balance valve. The piston rod is placed horizontally between the concave bracket and the upper and lower flaps, and the piston rod in the upper and lower flaps is converted from the horizontal state to the vertical state through the lifting action of the lifting oil cylinder, so that the deflection of the piston rod is prevented from changing, the probability of failure of the piston rod during operation is reduced, and the problem of difficult hoisting when the piston rod is vertically placed is solved.

Description

Technical Field

[0001] This invention relates to the field of compressor piston rod maintenance technology, and more specifically to a piston rod protection device for reciprocating compressors. Background Technology

[0002] Reciprocating compressors are widely used in chemical plant production. The piston rod of a reciprocating compressor, as the core working component, plays an important role in the normal operation of the unit. Normally, the piston rod is placed horizontally on a temporary bracket. Over time, this placement method will affect the deflection of the piston rod, which will greatly affect the runout value during unit operation and pose certain safety hazards to chemical production. When temporarily placed vertically, large lifting tools and special fixtures are often required. It is difficult to place the piston rod vertically in the fixture using existing technology, which brings certain difficulties to the lifting work. Summary of the Invention

[0003] To address the problems existing in the background art, the present invention provides a piston rod protection device for a reciprocating compressor, including a base, a base plate connected to the left side of the base, an oil tank disposed on the upper part of the base plate, an oil pipe output from the oil tank connected to a gear oil pump, an oil pipe output from the gear oil pump connected to an electromagnetic directional valve, an oil pipe output from the electromagnetic directional valve connected to a throttle valve, an oil pipe output from the throttle valve connected to a hydraulically controlled check valve, an oil pipe output from the hydraulically controlled check valve connected to a balance valve, an oil pipe output from the balance valve connected to a lifting cylinder, and a circuit output from the electromagnetic directional valve connected to a control switch. An oil pipe is connected to the oil tank and the lifting cylinder via the valve output. The lower end of the lifting cylinder is hinged to the base plate. The lifting cylinder is fixed to the base by a cylinder clamp. The lifting end of the lifting cylinder is hinged to the rotating arm via a connecting rod. The rotating arm is connected to the left rotating shaft via a key. The left rotating shaft is equipped with a left bearing and passes through the base to connect to the lower flip cover. The right side of the lower flip cover is connected to a right rotating shaft. The right rotating shaft is equipped with a right bearing and is mounted on the base. The other end of the base is equipped with a concave bracket. The concave bracket is fixed to the base by left and right support arms. The lower end of the concave bracket is equipped with a connecting block.

[0004] In a preferred embodiment, the lower flip cover is hinged to the upper flip cover.

[0005] In a preferred embodiment, the upper and lower flip covers are provided with multiple cushioning pads.

[0006] In a preferred embodiment, the rotating arm is provided with an anti-rotation pin.

[0007] In a preferred embodiment, a rocker arm screw is provided on the base near the concave bracket side and passes through the connecting block and is threadedly connected to the connecting block. One end of the rocker arm screw is made of polytetrafluoroethylene.

[0008] The beneficial effects achieved by this invention are as follows:

[0009] First, this solution places the piston rod horizontally between the concave bracket and the upper and lower flaps, and then uses the lifting action of the lifting cylinder to change the piston rod from a horizontal state to a vertical state, thereby preventing the piston rod from deflecting and reducing the probability of piston rod failure during operation. At the same time, it solves the problem of difficulty in hoisting when the piston rod is placed vertically.

[0010] Secondly, the lower cover is hinged to the upper cover. When the piston rod is placed on the lower cover and the concave bracket, the upper cover is flipped over and placed on top of the piston. The fastening bolts are tightened into the bolt holes of the lower cover, so that the piston is firmly fixed in the upper and lower covers.

[0011] Third, the upper and lower flip covers are equipped with multiple rubber buffer pads. When the piston is fixed in the upper and lower flip covers, the rubber buffer pads are in direct contact with the surface of the piston, avoiding scratches and other damage to the piston.

[0012] Fourth, the top cover is equipped with a handle. When flipping the top cover, you can hold the handle to flip it freely, which is effortless and convenient.

[0013] Fifth, the rotating arm is equipped with an anti-rotation pin. When the piston rod is flipped to a vertical position, the anti-rotation pin is inserted into the pin hole on the base to prevent the piston rod from changing angle in the vertical position, thereby increasing the stability and safety of the device.

[0014] Sixth, a rocker arm screw is provided on the base near the concave bracket. The rocker arm screw is threaded to the connecting block and passes through the connecting block. The end of the rocker arm screw near the lower cover is made of polytetrafluoroethylene. After the piston rod is placed horizontally on this device, the rocker arm screw is rotated to push the piston backward and move it close to the flat baffle of the lower cover without damaging the piston. This allows the piston to have a gravity support point when it is in a vertical state. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 This is a right view of the present invention;

[0018] Figure 4 This is a rear view of the present invention.

[0019] Explanation of the labels in the diagram:

[0020] 1. Base; 101. Rocker arm screw; 102. Pin hole; 103. Control switch; 2. Base plate; 201. Oil tank; 202. Gear oil pump; 203. Solenoid directional valve; 204. Throttle valve; 205. Hydraulic check valve; 206. Balance valve; 207. Lifting cylinder; 208. Cylinder clamp; 209. Connecting rod; 210. Rotating arm; 211. Anti-rotation pin; 3. Left rotating shaft; 301. Left bearing; 302. Right rotating shaft; 303. Right bearing; 4. Lower flip cover; 401. Rubber buffer pad; 402. Fastening bolt; 5. Upper flip cover; 501. Handle; 6. Concave bracket; 601. Connecting block; 602. Support arm. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figure 1-4 A reciprocating compressor piston rod protection device includes a base 1, a base plate 2 connected to the left side of the base 1, an oil tank 201 mounted on the upper part of the base plate 2, an oil pipe output from the oil tank 201 connected to a gear oil pump 202, an oil pipe output from the gear oil pump 202 connected to a solenoid directional valve 203, an oil pipe output from the solenoid directional valve 203 connected to a throttle valve 204, an oil pipe output from the throttle valve 204 connected to a hydraulically controlled check valve 205, an oil pipe output from the hydraulically controlled check valve 205 connected to a balance valve 206, an oil pipe output from the balance valve 206 connected to a lifting cylinder 207, and an output line from the solenoid directional valve 203 connected to a control switch 103. On the oil tank 201 and the lifting cylinder 207, the lower end of the lifting cylinder 207 is hinged to the base plate 2. The lifting cylinder 207 is fixed to the base 1 by the cylinder clamp 208. The lifting end of the lifting cylinder 207 is hinged to the rotating arm 210 by the connecting rod 209. The rotating arm 210 is connected to the left rotating shaft 3 by the key. The left rotating shaft 3 is provided with a left bearing 301 and passes through the base to connect to the lower flip cover 4. The right side of the lower flip cover 4 is connected to a right rotating shaft 302. The right rotating shaft 302 is provided with a right bearing and is installed on the base. The other end of the base is provided with a concave bracket 6. The concave bracket 6 is fixed to the base 1 by the left and right support arms 602. The lower end of the concave bracket 6 is provided with a connecting block 601.

[0023] Reference Figure 1-4 The lower cover 4 is hinged to the upper cover 5. When the piston rod is placed on the lower cover 4 and the concave bracket 6, the upper cover 5 is flipped over and placed on the piston. The fastening bolt 402 is tightened into the bolt hole of the lower cover, so that the piston is firmly fixed in the upper and lower covers.

[0024] Reference Figure 1 3; The upper cover 5 and the lower cover 4 are provided with multiple rubber buffer pads 401. When the piston is fixed in the upper and lower covers, the rubber buffer pads 401 are in direct contact with the surface of the piston to avoid scratches or other damage to the piston.

[0025] Reference Figure 1-4 The upper cover 5 is equipped with a handle 501. When flipping the upper cover 5, you can hold the handle 501 by hand to flip the upper cover 501 freely, which is effortless and convenient.

[0026] Reference Figure 1-2 The rotating arm 210 is equipped with an anti-rotation pin 211. When the piston rod is flipped to a vertical position, the anti-rotation pin 211 is inserted into the pin hole 102 on the base to prevent the piston rod from changing angle in the vertical position, thereby increasing the stability and safety of the device.

[0027] Reference Figure 1-2 A rocker arm screw 101 is provided on the base 1 near the concave bracket 6. The rocker arm screw 101 is threadedly connected to the connecting block 601 and passes through the connecting block 601. The end of the rocker arm screw 101 near the lower cover 4 is made of polytetrafluoroethylene. After the piston rod is placed horizontally on this device, the rocker arm screw 101 is rotated to push the piston backward and move it close to the flat baffle of the lower cover without damaging the piston. This allows the piston to have a gravity support point when it is in a vertical state.

[0028] When using this device, first suspend the piston rod on the concave bracket 6 and the lower cover 4, placing the piston on the lower cover 4. Rotate the rocker arm screw 101, causing the PTFE end of the rocker arm screw 101 to move backward against the piston and press against the flat baffle of the lower cover 4. Pull the handle 501 to place the upper cover 501 on top of the piston. Then, tighten the fastening bolt 402 into the bolt hole of the lower cover, fixing the piston part between the upper cover 5 and the lower cover 4. Rotate the rocker arm screw 101 in the opposite direction to disengage the rocker arm screw 101 from the piston part. Start the gear oil pump 202 and control it remotely. Switch 103 is used to lift the hydraulic cylinder 207, causing the rotating arm 210 to rotate, which in turn rotates the left rotating shaft 3 and the right rotating shaft 302. This causes the piston rod, which is fastened between the upper cover 5 and the lower cover 4, to rotate from a horizontal state to a vertical state. Then, the anti-rotation pin 211 is inserted into the pin hole 102 on the base. This solution uses the lifting action of the hydraulic cylinder to rotate the piston rod in the upper and lower covers from a horizontal state to a vertical state, thereby preventing the piston rod from deflecting and reducing the probability of piston rod failure during operation. It also solves the problem of difficulty in hoisting when the piston rod is placed vertically.

[0029] The above connection methods are commonly used in existing technologies, and will not be described in detail.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A piston rod protection device for a reciprocating compressor, comprising a base, characterized in that, It includes: The base and the base plate mounted on the left side of the base; An oil tank is located on the upper part of the base plate, and an oil pipe is connected to the gear oil pump from the oil tank output. The gear oil pump output is connected to the solenoid directional valve via an oil pipe. The output of the solenoid directional valve is connected to the throttle valve via an oil pipe; The throttle valve output is connected to a hydraulically controlled check valve via an oil pipe. The hydraulic check valve output is connected to the balance valve via an oil pipe; The balance valve output is connected to the lifting cylinder via an oil pipe; The output of the solenoid directional valve is connected to the control switch via a wiring connection. The output of the electromagnetic reversing valve is connected to the oil tank and the lifting cylinder via an oil pipe; The lower end of the lifting cylinder is hinged to the base plate; The lifting cylinder is fixed to the base by a cylinder clamp; The lifting end of the lifting cylinder is hinged to the rotating arm via a connecting rod. The rotating arm is connected to the left rotating shaft by a key; The left rotating shaft is equipped with a left bearing and passes through the base to connect to the lower flip cover; The right side of the lower flip cover is connected to a right rotating shaft, which is equipped with a right bearing and mounted on the base; A concave bracket is provided at the other end of the base. The concave bracket is fixed to the base by left and right support arms, and a connecting block is provided at the lower end of the concave bracket.

2. The reciprocating compressor piston rod protection device according to claim 1, characterized in that: The lower flip cover is hinged to the upper flip cover.

3. The reciprocating compressor piston rod protection device according to claim 2, characterized in that: The upper and lower flip covers are equipped with multiple cushioning pads.

4. The reciprocating compressor piston rod protection device according to claim 1, characterized in that: The rotating arm is equipped with an anti-rotation pin.

5. The reciprocating compressor piston rod protection device according to claim 1, characterized in that: A rocker arm screw is provided on the base near the concave bracket side and passes through the connecting block and is threadedly connected to the connecting block. One end of the rocker arm screw is made of polytetrafluoroethylene.

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