A large-scale process reciprocating compressor skid-mounted

Abstract

The invention discloses a skid-mounted large-scale process reciprocating compressor, which belongs to the field of skid-mounted installations and comprises a bottom skid, on which a compressor main engine, a coupling assembly and a main motor are arranged along the length direction of the bottom skid; boost cylinder assemblies are arranged on both sides of the compressor main engine, and a buffer tank and a washing tank are connected to the boost cylinder assembly; the washing tank connected to the lower-stage boost cylinder assembly is connected to the upper-stage boost cylinder assembly through a cooler, and the cooler is transversely arranged on the bottom skid at the tail end of the main motor, and the two ends of the cooler are respectively located on both sides of the main motor; a cooling water pipeline module, a lubrication module and a control module are also arranged on the bottom skid, and also include auxiliary pipelines and electrical connecting lines, and the interfaces of the auxiliary pipelines and the interfaces of the electrical connecting lines are arranged at the skid edge of the bottom skid. The above structure has the characteristics of compact structure, reasonable layout, high stability, etc., and overcomes the problems of difficulty in skid-mounting large compressors and difficulty in installation and construction.

Description

Technical Field

[0001] The invention relates to the field of skid mounting, and in particular to a skid mounting of a large-scale process reciprocating compressor. Background Art

[0002] Reciprocating compressors are volumetric compressors, which are general equipment that continuously changes the volume of gas to increase the working pressure of gas. They are widely used. Reciprocating compressor skid units are based on compressors. Through reasonable design and calculation, the driver, coupling, separator, cooler and other related process equipment are installed on a common steel structure skid, which is convenient for movement and installation. It is a set of process equipment with independent functions, which is an important development trend of industrial equipment towards integration and modularization.

[0003] However, the existing large-scale process reciprocating compressors mostly use low speed and large stroke, with large reciprocating mass, which increases reactive power consumption and leakage risk. At the same time, the overall size of the unit is large, and the multi-story plant layout is adopted. The degree of skid mounting is low, the footprint is large, and the weight is large. When leaving the factory, it needs to be disassembled in parts and then transported to the site for reassembly, which affects the construction period, cost and installation accuracy, and the construction is difficult. On the other hand, in order to ensure the cleanliness of the compressed medium, the reciprocating compressor uses an oil-free lubricated cylinder, and when compressing wet CO 2 There is an acid corrosion problem, and the existing compressors have the disadvantages of short life, high failure rate and poor stability.

[0004] In view of the above problems, the present invention designs and manufactures a large-scale process reciprocating compressor skid to overcome the above defects. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a large-scale process reciprocating compressor skid-mounted, which has the characteristics of compact structure, reasonable layout, high stability, etc., and overcomes the difficulties in skid-mounting large compressors and the difficulty in installation and construction.

[0006] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a large-scale process reciprocating compressor skid-mounted, comprising a bottom skid, on which a compressor main engine, a coupling assembly and a main motor are arranged along the length direction of the bottom skid;

[0007] The compressor mainframe is provided with booster cylinder assemblies on both sides, the booster cylinder assemblies are connected with buffer tanks, the buffer tanks are connected with washing tanks, and the washing tanks are arranged on the bottom skids on both sides of the compressor mainframe;

[0008] The boost cylinder assemblies are set to four, and the four boost cylinder assemblies are horizontally symmetrically arranged on both sides of the compressor mainframe. The two boost cylinder assemblies on one side of the compressor mainframe are set to be a first-stage boost cylinder assembly in parallel, and the two boost cylinder assemblies on the other side of the compressor mainframe are set to be a second-stage boost cylinder assembly and a third-stage boost cylinder assembly respectively.

[0009] The buffer tank comprises a primary buffer tank, a secondary buffer tank and a tertiary buffer tank, the washing tank comprises a primary washing tank, a secondary washing tank and a tertiary washing tank, the primary buffer tank is connected above the primary boost cylinder assembly, the primary buffer tank is arranged along the length direction of the bottom skid, the primary buffer tank is directly connected to the primary washing tank through a flange, the primary washing tank is arranged at the end of the primary buffer tank away from the main motor and connected to the bottom skid, the secondary buffer tank is connected above the secondary boost cylinder assembly, the secondary buffer tank is arranged along the length direction of the bottom skid, the secondary buffer tank is directly connected to the secondary washing tank through a flange, the secondary washing tank is arranged at the end of the secondary buffer tank close to the main motor and connected to the bottom skid, the tertiary buffer tank is connected above the tertiary boost cylinder assembly, the tertiary buffer tank is arranged along the length direction of the bottom skid, the tertiary buffer tank is directly connected to the tertiary washing tank through a flange, the tertiary washing tank is arranged at the end of the tertiary buffer tank away from the main motor and connected to the bottom skid;

[0010] The washing tank connected to the next-stage boost cylinder assembly is connected to the previous-stage boost cylinder assembly through a cooler, and the cooler is transversely arranged on the bottom skid at the tail end of the main motor, and the two ends of the cooler are respectively located on both sides of the main motor;

[0011] The skid is also provided with a cooling water pipeline module, a lubrication module and a control module. The cooling water pipeline module is connected to the cooler, and the lubrication module is connected to the lubrication position of the equipment on the skid;

[0012] It also includes auxiliary pipelines and electrical connection lines, wherein interfaces of the auxiliary pipelines and the electrical connection lines are arranged at the skid edge of the bottom skid.

[0013] Preferably, a support seat is provided on the base skid, the support seat is arranged along the length direction of the base skid, the center line of the support seat in the width direction coincides with the center line of the base skid in the width direction, and the compressor main unit, coupling assembly and main motor are arranged in sequence on the support seat along the center line in the width direction.

[0014] Preferably, the cooler includes a primary cooler and a secondary cooler. The primary cooler is arranged between the air outlet end of the primary boost cylinder assembly and the secondary washing tank, and the secondary cooler is arranged between the air outlet end of the secondary boost cylinder assembly and the tertiary washing tank. The primary cooler and the secondary cooler are stacked up and down.

[0015] Preferably, the air inlet and the air outlet of the boost cylinder assembly are respectively arranged on the upper and lower sides of the boost cylinder assembly.

[0016] Preferably, the boost cylinder assembly and the CO 2 The contact parts are made of corrosion-resistant materials and / or are heat-treated.

[0017] Preferably, the boost cylinder assembly comprises a double-acting air-cooled cylinder and a middle body, a water-cooled packing structure is provided between the double-acting air-cooled cylinder and the middle body, the double-acting air-cooled cylinder is connected to the compressor main engine through the middle body, and an oil-slinging pan is provided in the middle body.

[0018] Preferably, a cylinder head support seat is provided at the bottom of one end of the boost cylinder assembly away from the compressor main engine, and the bottom of the cylinder head support seat is connected to the bottom skid.

[0019] Preferably, the bottom of the compressor main engine and the main motor is provided with an epoxy resin grouting layer for vibration reduction and an adjustment gasket for convenient height adjustment.

[0020] Preferably, the coupling assembly is configured as a double diaphragm coupling, and a spark-free flywheel guard is provided on the outer side of the double diaphragm coupling.

[0021] The invention is beneficial in that:

[0022] 1. All equipment of the present invention are integrated and installed on the skid, among which the compressor main engine, coupling assembly and main motor are installed on the center line of the width direction of the skid, and other main equipment are installed on both sides of the center line of the width direction of the skid or at both ends of the length direction of the skid to reduce the deviation of the center of gravity. Since the main equipment is distributed along both sides, it is convenient for hoisting, transportation and maintenance, and the overall structure has the advantages of compact structure, reasonable layout, high stability, low vibration, long life, etc. It solves the key technical problems of large-scale process reciprocating compressors, large size, heavy weight, multi-story plant layout, and low degree of skid installation, and the construction difficulty is greatly reduced.

[0023] 2. The booster cylinder assembly of the present invention and CO 2 The contact parts are made of corrosion-resistant materials or heat-treated to ensure corrosion resistance. 2 At the same time, it solves the acid corrosion problem, improves life and stability, and reduces failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a large-scale process reciprocating compressor skid;

[0025] Figure 2 Axonometric view of a large process reciprocating compressor skid mounted.

[0026] In the figure: 1-compressor main engine, 2-coupling assembly, 3-main motor, 4-primary buffer tank, 5-secondary buffer tank, 6-third-level buffer tank, 7-primary washing tank, 8-secondary washing tank, 9-third-level washing tank, 10-primary cooler, 11-secondary cooler, 12-base skid, 13-cylinder head support seat, 14-process air intake module, 15-cooling water pipeline module, 16-lubrication module, 17-control module. DETAILED DESCRIPTION

[0027] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0028] like Figure 1 , Figure 2 As shown, a large-scale process reciprocating compressor skid includes a bottom skid 12, on which a compressor main unit 1, a coupling assembly 2 and a main motor 3 are arranged along the length direction of the bottom skid 12, the coupling assembly 2 is configured as a double diaphragm coupling, and a spark-free flywheel shield is disposed on the outer side of the double diaphragm coupling. Preferably, a support seat is provided on the bottom skid 12, and the support seat is provided along the length direction of the bottom skid 12. The structure of the support seat not only provides good support, but also can effectively reduce the vibration of the unit during operation. The bottom skid 12 and the support seat are all assembled and welded with H-shaped steel.

[0029] The center line of the support seat in the width direction coincides with the center line of the bottom skid 12 in the width direction, and the compressor main unit 1, the coupling assembly 2 and the main motor 3 are arranged in sequence on the support seat along the center line in the width direction, so as to avoid the center of gravity shift on the bottom skid 12.

[0030] The bottom of the compressor main unit 1 and the main motor 3 are preferably provided with an epoxy resin grouting layer for vibration reduction and an adjustment gasket for convenient height adjustment, so as to further reduce vibration and subsequent installation operations.

[0031] A boost cylinder assembly is provided on both sides of the compressor main unit 1 , a buffer tank is connected to the boost cylinder assembly, a washing tank is connected to the buffer tank, and the washing tank is arranged on the bottom skid 12 on both sides of the compressor main unit 1 .

[0032] The washing tank connected to the next-stage booster cylinder assembly is connected to the previous-stage booster cylinder assembly through a cooler, which is transversely arranged on the bottom skid 12 at the tail end of the main motor 3, and its position is equivalent to one end of the bottom skid 12 in the length direction, and the two ends of the cooler are respectively located on both sides of the main motor 3. The first-stage washing tank 7 is connected to a process air intake module 14, which is arranged at the other end of the bottom skid 12 in the length direction, so as to facilitate the user's external pipe corridor, reduce the number of pipeline elbows, and save space.

[0033] All of the above equipment are integrated and installed on the skid 12, which better avoids the impact of partial disassembly and transportation and on-site reassembly on construction period, cost and installation accuracy, and greatly reduces construction difficulty and investment cost.

[0034] The skid 12 of the present invention is also provided with a cooling water pipeline module 15, a lubrication module 16 and a control module 17. The cooling water pipeline module 15 is connected to the cooler. Specifically, the cooling water enters the pipe of the cooler and is fully heat-exchanged with the high-temperature process medium before being discharged. The cooling water pipeline module 15 is preferably provided with a valve for adjusting the cooling water flow rate to control the cooling temperature. The lubrication module 16 is connected to the lubrication position of the equipment on the skid 12. Specifically, the lubrication module 16 is pressurized by the shaft head oil pump on the compressor main unit 1, and is transported to each lubrication position through an oil pipe after filtering and cooling. Preferably, it also includes a high-level oil tank for automatic lubrication replenishment and a three-way valve for temperature control to ensure that the lubricating oil has a good lubrication temperature. The control module 17 includes electrical, instrumentation, automatic control valves, PLC control cabinets, instrument gas pipelines, cables, etc., which are used to monitor and transmit the real-time operating status of the compressor to meet the functions of automatic protection alarm, shutdown, etc.

[0035] It also includes auxiliary pipelines and electrical connection lines. The interfaces of the auxiliary pipelines and the electrical connection lines are arranged at the edge of the bottom skid 12 to facilitate installation and construction after the overall transportation to the site.

[0036] Specifically, the compressor mainframe 1 of the present invention adopts three-stage compression, and there are four boost cylinder assemblies, which are horizontally and symmetrically arranged on both sides of the compressor mainframe 1. The two boost cylinder assemblies on one side of the compressor mainframe 1 are set as parallel one-stage boost cylinder assemblies, and the two boost cylinder assemblies on the other side of the compressor mainframe 1 are respectively set as two-stage boost cylinder assemblies and three-stage boost cylinder assemblies. The bottom of the boost cylinder assembly away from the compressor mainframe 1 is preferably provided with a cylinder head support seat 13, and the bottom of the cylinder head support seat 13 is connected to the bottom skid 12 to prevent the end of the boost cylinder assembly from sinking, thereby improving the overall rigidity and facilitating installation and adjustment.

[0037] The buffer tank specifically includes a primary buffer tank 4, a secondary buffer tank 5 and a tertiary buffer tank 6, and the washing tank specifically includes a primary washing tank 7, a secondary washing tank 8 and a tertiary washing tank 9. The air inlet and the air outlet of the boost cylinder assembly are respectively arranged on the upper and lower sides of the boost cylinder assembly. Specifically, the primary buffer tank 4 is connected above the primary boost cylinder assembly, and the primary buffer tank 4 is arranged along the length direction of the bottom skid 12. The primary buffer tank 4 is directly connected to the primary washing tank 7 through a flange, which saves installation space and increases the pulsation control effect. The primary washing tank 7 is arranged at the end of the primary buffer tank 4 away from the main motor 3 and connected to the bottom skid 12. A secondary buffer tank 5 is connected to the top of the secondary boost cylinder assembly. The secondary buffer tank 5 is arranged along the length direction of the bottom skid 12. The secondary buffer tank 5 is directly connected to the secondary washing tank 8 through a flange. The secondary washing tank 8 is arranged at the end of the secondary buffer tank 5 close to the main motor 3 and connected to the bottom skid 12. The secondary washing tank 8 is equivalent to being arranged between the secondary buffer tank 5 and the cooler. The secondary washing tank 8 is close to the cooler, which can effectively reduce the layout of the pipelines. A tertiary buffer tank 6 is connected to the top of the tertiary boost cylinder assembly. The tertiary buffer tank 6 is arranged along the length direction of the bottom skid 12. The tertiary buffer tank 6 is directly connected to the tertiary washing tank 9 through a flange. The tertiary washing tank 9 is arranged at the end of the tertiary buffer tank 6 away from the main motor 3 and connected to the bottom skid 12.

[0038] The above-mentioned main equipment is distributed along both sides of the compressor main unit 1 and the main motor 3, which is convenient for hoisting, transportation and maintenance, and has the advantages of compact structure, reasonable layout, high stability, low vibration and long life. It solves the key technical problems of large-scale process reciprocating compressors, large size, heavy weight, multi-story plant layout and low degree of skid mounting, and greatly reduces the construction difficulty.

[0039] The cooler specifically includes a primary cooler 10 and a secondary cooler 11. The primary cooler 10 is arranged between the air outlet end of the primary boost cylinder assembly and the secondary washing tank 8, and the secondary cooler 11 is arranged between the air outlet end of the secondary boost cylinder assembly and the tertiary washing tank 9. The primary cooler 10 and the secondary cooler 11 are stacked up and down. The arrangement structure of the cooler can greatly save installation space on the one hand, and can effectively utilize the maintenance channel space for core pulling maintenance on the other hand.

[0040] The boost cylinder assembly of the present invention and CO 2 The contact parts are made of corrosion-resistant materials and / or are heat-treated to ensure corrosion resistance in compressed wet CO 2 At the same time, it solves the acid corrosion problem, improves life and stability, and reduces failure rate.

[0041] The boost cylinder assembly includes a double-acting air-cooled cylinder and a middle body. A water-cooled packing structure is provided between the double-acting air-cooled cylinder and the middle body. The double-acting air-cooled cylinder is connected to the compressor host 1 through the middle body. An oil-slinging pan is provided in the middle body to ensure that the medium is not contaminated by the lubricating oil during the compression process.

[0042] Specific working process:

[0043] Process medium CO 2 After the gas enters the first-level washing tank 7 for separation and filtration through the process air intake module 14, the gas enters the first-level buffer tank 4 and flows into two parallel first-level boost cylinders for pressurization, is cooled by the first-level cooler 10, enters the second-level washing tank 8 for separation again, enters the second-level buffer tank 5 and flows into the second-level boost cylinder for pressurization, is cooled by the second-level cooler 11, enters the third-level washing tank 9 for separation again, enters the third-level buffer tank 6 and flows into the third-level boost cylinder for pressurization to meet the process requirements and is discharged from the unit for use by downstream users.

[0044] The cooling water pipeline module 15 enters the primary cooler 10 and the secondary cooler 11 through the cooling water to fully exchange heat with the high-temperature process medium. The cooling water pipelines at each level control the intake temperature of each level through valves that adjust the cooling water flow.

[0045] The lubrication module 16 is pressurized by the shaft head oil pump on the compressor main unit 1, and is transported to various lubrication positions through oil pipes after filtering and cooling. The high-level oil tank and temperature-controlled three-way valve used for automatic lubrication ensure that the lubricating oil has a good lubrication temperature.

[0046] The control module 17 includes electrical, instrumentation, automatic valves, PLC control cabinet, instrument gas pipelines, cables, etc., all of which are integrated and arranged on the skid to monitor and transmit the real-time operating status of the compressor to meet the functions of automatic protection alarm, shutdown, etc.

[0047] It should be understood that the purpose of these embodiments is only to illustrate the present invention and is not intended to limit the protection scope of the present invention. In addition, it should also be understood that after reading the technical content of the present invention, those skilled in the art can make various changes, modifications and / or variations to the present invention, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A large-scale process reciprocating compressor skid-mounted, characterized in that: It comprises a base skid (12), on which a compressor main unit (1), a coupling assembly (2) and a main motor (3) are arranged along the length direction of the base skid (12); The compressor mainframe (1) is provided with booster cylinder assemblies on both sides, the booster cylinder assemblies are connected to buffer tanks, the buffer tanks are connected to washing tanks, and the washing tanks are arranged on bottom skids (12) on both sides of the compressor mainframe (1); The number of the boost cylinder assemblies is four, and the four boost cylinder assemblies are horizontally symmetrically arranged on both sides of the compressor main unit (1), the two boost cylinder assemblies on one side of the compressor main unit (1) are arranged as a first-stage boost cylinder assembly connected in parallel, and the two boost cylinder assemblies on the other side of the compressor main unit (1) are arranged as a second-stage boost cylinder assembly and a third-stage boost cylinder assembly respectively; The buffer tank comprises a primary buffer tank (4), a secondary buffer tank (5) and a tertiary buffer tank (6); the washing tank comprises a primary washing tank (7), a secondary washing tank (8) and a tertiary washing tank (9); the primary buffer tank (4) is connected above the primary boost cylinder assembly; the primary buffer tank (4) is arranged along the length direction of the bottom skid (12); the primary buffer tank (4) is directly connected to the primary washing tank (7) via a flange; the primary washing tank (7) is arranged at an end of the primary buffer tank (4) away from the main motor (3) and connected to the bottom skid (12); the secondary buffer tank (5) is connected above the secondary boost cylinder assembly; the The secondary buffer tank (5) is arranged along the length direction of the bottom skid (12), the secondary buffer tank (5) is directly connected to the secondary washing tank (8) through a flange, the secondary washing tank (8) is arranged at one end of the secondary buffer tank (5) close to the main motor (3) and connected to the bottom skid (12), a third buffer tank (6) is connected above the third-stage boost cylinder assembly, the third buffer tank (6) is arranged along the length direction of the bottom skid (12), the third buffer tank (6) is directly connected to the third washing tank (9) through a flange, the third washing tank (9) is arranged at one end of the third buffer tank (6) away from the main motor (3) and connected to the bottom skid (12); The washing tank connected to the next-stage boost cylinder assembly is connected to the previous-stage boost cylinder assembly via a cooler, the cooler being transversely arranged on the bottom skid (12) at the rear end of the main motor (3), with the two ends of the cooler being located on both sides of the main motor (3); The skid (12) is also provided with a cooling water pipeline module (15), a lubrication module (16) and a control module (17); the cooling water pipeline module (15) is connected to a cooler, and the lubrication module (16) is connected to a lubrication position of equipment on the skid (12); It also includes auxiliary pipelines and electrical connection lines, wherein the interfaces of the auxiliary pipelines and the interfaces of the electrical connection lines are arranged at the edge of the bottom skid (12); The cooler comprises a primary cooler (10) and a secondary cooler (11); the primary cooler (10) is arranged between the gas outlet end of the primary supercharged cylinder assembly and the secondary washing tank (8); the secondary cooler (11) is arranged between the gas outlet end of the secondary supercharged cylinder assembly and the tertiary washing tank (9); the primary cooler (10) and the secondary cooler (11) are stacked up and down.

2. A large-scale process reciprocating compressor skid-mounted according to claim 1, characterized in that: A support seat is provided on the bottom skid (12), the support seat is arranged along the length direction of the bottom skid (12), the center line of the support seat in the width direction coincides with the center line of the bottom skid (12), and the compressor main unit (1), the coupling assembly (2) and the main motor (3) are arranged in sequence on the support seat along the center line in the width direction.

3. A large-scale process reciprocating compressor skid-mounted according to claim 1, characterized in that: The air inlet and the air outlet of the boost cylinder assembly are respectively arranged on the upper and lower sides of the boost cylinder assembly.

4. A large-scale process reciprocating compressor skid-mounted according to claim 1, characterized in that: The portion of the boost cylinder assembly in contact with CO2 is made of corrosion-resistant material and / or is heat-treated.

5. The large-scale process reciprocating compressor skid-mounted according to claim 1, characterized in that: The boost cylinder assembly comprises a double-acting air-cooled cylinder and a middle body, a water-cooled packing structure is provided between the double-acting air-cooled cylinder and the middle body, the double-acting air-cooled cylinder is connected to the compressor main engine (1) through the middle body, and an oil-slinging pan is provided in the middle body.

6. The large-scale process reciprocating compressor skid-mounted according to claim 1, characterized in that: A cylinder head support seat (13) is provided at the bottom of one end of the boost cylinder assembly away from the compressor main unit (1), and the bottom of the cylinder head support seat (13) is connected to the bottom skid (12).

7. The large-scale process reciprocating compressor skid-mounted according to claim 1, characterized in that: An epoxy resin grouting layer for vibration reduction and an adjustment gasket for convenient height adjustment are provided at the bottom of the compressor main unit (1) and the main motor (3).

8. The large-scale process reciprocating compressor skid-mounted according to claim 1, characterized in that: The coupling assembly (2) is configured as a double diaphragm coupling, and a spark-free flywheel shield is provided on the outer side of the double diaphragm coupling.

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