Compressor with anti-surge structure

Abstract

The utility model discloses a compressor with an anti-surge structure, which belongs to the technical field of compressors and comprises a base, the upper surface of the base is fixedly connected with a fixing disc, the upper surface of the fixing disc is fixedly connected with a compressor body, the upper surface of the compressor body is fixedly connected with a high-pressure cylinder, and the upper surface of the high-pressure cylinder is fixedly communicated with an air outlet pipe. The outer surface of the high-pressure cylinder is fixedly connected with a low-pressure cylinder, a first-section ammonia cooler and a second-section ammonia cooler are respectively arranged above the base, a methanol washing ammonia cooler is arranged above the base, and the methanol washing ammonia cooler is arranged on the right side of the second-section ammonia cooler. According to the compressor with the anti-surge structure, a certain section or multiple sections of electromagnetic valves can be opened in an interlocking mode according to conditions, normal and stable operation of a unit is guaranteed, the first electromagnetic valve or the second electromagnetic valve can be opened in an interlocking mode according to the conditions through multi-section compression, and the problem of abnormal surge of the ammonia compressor caused by shutdown of a synthesis system is solved; and the ammonia compressor has good anti-surge performance, and smooth operation of the system is ensured.

Description

Technical Field

[0001] This application belongs to the field of compressor technology, and in particular relates to a compressor with an anti-surge structure. Background Technology

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. Its actual function is to increase pressure, raising the intake pressure to the discharge pressure. Compressors are generally classified according to their housing type and drive mechanism configuration. Based on housing type, they can be divided into open, hermetic, and semi-hermetic compressors. Hermetic compressors are those where the entire compressor is housed within a single housing. These compressors have a wide range of applications; for example, they are used in the production of liquid ammonia from ammonia gas.

[0003] The existing utility model with authorization announcement number CN208996962U discloses a compressor, including a housing and a distributor disposed on the outside of the housing. The distributor is provided in multiple ways and is evenly distributed along the circumference of the housing to reduce the torque generated by the multiple distributors relative to the center of the housing.

[0004] The above technical solution involves multiple distributors evenly distributed around the circumference of the outer casing, reducing the torque generated by the distributors relative to the center of the casing, thereby reducing vibration during compressor operation and noise. This effectively solves the problem of excessive vibration or noise caused by the eccentric torque generated by a single distributor in the existing technology. However, the original control system interlocking logic of the ammonia compressor in the above technical solution is designed to ensure the safe operation of its own unit, but it has shortcomings: it does not consider the abnormal surge of the ammonia compressor caused by the shutdown of the synthesis system, which affects the operation of the entire system. Compressor surge refers to an unstable operating condition that occurs when the compressor flow rate decreases to a certain level. That is, the gas flow rate and exhaust pressure of the compressor fluctuate periodically at low frequency and large amplitude, causing strong vibration of the unit, which will seriously affect the normal operation of the compressor.

[0005] To address this issue, we propose a compressor with an anti-surge structure. Utility Model Content

[0006] The purpose of this application is to address the problem that existing compressors cannot effectively prevent and resolve surge during startup and shutdown, and to propose a compressor with an anti-surge structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A compressor with an anti-surge structure includes a base, a fixed plate fixedly connected to the upper surface of the base, a compressor body fixedly connected to the upper surface of the fixed plate, a high-pressure cylinder fixedly connected to the upper surface of the compressor body, an outlet pipe fixedly connected to the upper surface of the high-pressure cylinder, and a low-pressure cylinder fixedly connected to the outer surface of the high-pressure cylinder. A first-stage ammonia cooler and a second-stage ammonia cooler are respectively arranged above the base. A methanol-washed ammonia cooler is arranged above the base and is located to the right of the second-stage ammonia cooler. The input ends of the first-stage ammonia cooler and the second-stage ammonia cooler are both fixedly connected to a first solenoid valve. The input end of the methanol-washed ammonia cooler is fixedly connected to a second solenoid valve. The other ends of the two first solenoid valves and the second solenoid valve are fixedly connected to a connecting pipe.

[0009] Preferably, the bottom surface of the base is fixedly connected to two support frames, and the bottom surface of each of the two support frames is fixedly connected to two mounting plates.

[0010] Preferably, two reinforcing plates are fixedly connected to one side of the two support frames that are close to each other, and the upper surfaces of the two reinforcing plates are fixedly connected to the bottom surface of the base.

[0011] Preferably, the fixed plate has a plurality of mounting bolts internally threaded together, the bottom end of each mounting bolt penetrating into the interior of the base, and the outer surface of each mounting bolt being threadedly connected to the inner bottom wall of the base.

[0012] Preferably, the outer surfaces of the first-stage ammonia cooler and the second-stage ammonia cooler are each fixedly connected to two mounting bases, and the bottom surface of each mounting base is fixedly connected to the upper surface of the base.

[0013] Preferably, the outer surface of the methanol washing ammonia cooler is fixedly connected to two stabilizing seats, and the bottom surface of both stabilizing seats is fixedly connected to the upper surface of the base.

[0014] Preferably, the bottom surfaces of both the first and second solenoid valves are fixedly connected to positioning seats, and the bottom surface of each positioning seat is fixedly connected to the upper surface of the base.

[0015] Preferably, a connecting flange is fixedly connected to the outer surface of the connecting pipe, and the front of the connecting flange has several mounting through holes.

[0016] In summary, the technical effects and advantages of this application are as follows:

[0017] By setting the first and second solenoid valves to execute according to the ammonia compressor control system logic, and introducing a new syngas compressor trip signal, the compressor body can have multiple compression stages in conjunction with the first-stage ammonia cooler, the second-stage ammonia cooler, and the methanol-washed ammonia cooler. For different systems performing work, one or more solenoid valves can be interlocked to open as needed, ensuring the normal and stable operation of the unit. This multi-stage compression allows the first or second solenoid valve to be interlocked to open as needed, solving the problem of abnormal surge in the ammonia compressor caused by the shutdown of the syngas system, giving the ammonia compressor good anti-surge performance, and ensuring smooth system operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the high-pressure cylinder of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the ammonia cooler of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the support frame of this utility model;

[0021] Figure 4 This is the circuit diagram of the ammonia compressor of this utility model.

[0022] In the diagram: 1. Base; 2. Fixing plate; 3. Compressor body; 4. High-pressure cylinder; 5. Outlet pipe; 6. Low-pressure cylinder; 7. First-stage ammonia cooler; 8. Second-stage ammonia cooler; 9. Methanol-washed ammonia cooler; 10. First solenoid valve; 11. Second solenoid valve; 12. Connecting pipe; 13. Support frame; 14. Mounting plate; 15. Reinforcing plate; 16. Mounting bolts; 17. Fixing seat; 18. Stabilizing seat; 19. Positioning seat; 20. Connecting flange; 21. Mounting through hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-4 A compressor with an anti-surge structure includes a base 1, a fixed plate 2 fixedly connected to the upper surface of the base 1, and two support frames 13 fixedly connected to the bottom surface of the base 1. Two mounting plates 14 are fixedly connected to the bottom surface of each of the two support frames 13. The support frames 13 and the mounting plates 14 can support the device and can also fix the device in the required position by mounting holes on the mounting plates 14 and fastening screws and other fasteners.

[0025] The upper surface of the fixed plate 2 is fixedly connected to the compressor body 3, and the upper surface of the compressor body 3 is fixedly connected to the high pressure cylinder 4. Two reinforcing plates 15 are fixedly connected to one side of the two support frames 13 that are close to each other. The upper surfaces of the two reinforcing plates 15 are fixedly connected to the bottom surface of the base 1. The reinforcing plates 15 can improve the stability of the support frame 13 on the base 1, making the support effect of the support frame 13 more superior.

[0026] The upper surface of the high-pressure cylinder 4 is fixedly connected to the air outlet pipe 5, and the outer surface of the high-pressure cylinder 4 is fixedly connected to the low-pressure cylinder 6. The internal thread of the fixed plate 2 is connected to several mounting bolts 16. The bottom end of each mounting bolt 16 penetrates into the interior of the base 1, and the outer surface of each mounting bolt 16 is threaded to the inner bottom wall of the base 1. The mounting bolts 16 can increase the connection between the fixed plate 2 and the base 1, making it less likely for the fixed plate 2 and the base 1 to loosen.

[0027] A first-stage ammonia cooler 7 and a second-stage ammonia cooler 8 are respectively installed above the base 1. A methanol washing ammonia cooler 9 is installed above the base 1. Two fixing seats 17 are fixedly connected to the outer surfaces of the first-stage ammonia cooler 7 and the second-stage ammonia cooler 8. The bottom surface of each fixing seat 17 is fixedly connected to the upper surface of the base 1. The fixing seats 17 can fix the position of the first-stage ammonia cooler 7 and the second-stage ammonia cooler 8, ensuring the normal operation of the first-stage ammonia cooler 7 and the second-stage ammonia cooler 8.

[0028] The methanol-ammonia washing cooler 9 is located on the right side of the second-stage ammonia cooler 8. Two stabilizing seats 18 are fixedly connected to the outer surface of the methanol-ammonia washing cooler 9. The bottom surfaces of the two stabilizing seats 18 are fixedly connected to the upper surface of the base 1. The stabilizing seats 18 can increase the stability of the methanol-ammonia washing cooler 9, making the methanol-ammonia washing cooler 9 more stable and reliable during use.

[0029] The input ends of the first ammonia cooler 7 and the second ammonia cooler 8 are both fixedly connected to the first solenoid valve 10. The input end of the methanol-wash ammonia cooler 9 is fixedly connected to the second solenoid valve 11. The bottom surfaces of the two first solenoid valves 10 and the second solenoid valve 11 are fixedly connected to the positioning seats 19. The bottom surface of each positioning seat 19 is fixedly connected to the upper surface of the base 1. The positioning seats 19 can position the first solenoid valves 10 and the second solenoid valves 11, so that the first solenoid valves 10 and the second solenoid valves 11 can be firmly fixed on the base 1.

[0030] The other ends of the two first solenoid valves 10 and the second solenoid valve 11 are fixedly connected to a connecting pipe 12. A connecting flange 20 is fixedly connected to the outer surface of the connecting pipe 12. Several mounting through holes 21 are opened on the front of the connecting flange 20. The connecting flange 20 cooperates with the mounting through holes 21 to connect the air supply pipe to the connecting pipe 12, ensuring the normal operation of the air intake of the connecting pipe 12.

[0031] The working principle of this utility model is as follows: In use, firstly, the compressor body 3 is connected to an external power source and controller. Then, the first-stage ammonia cooler 7, the second-stage ammonia cooler 8, and the methanol-washed ammonia cooler 9 are connected to the cooling pipeline system. Next, the first solenoid valve 10 and the second solenoid valve 11 are connected to the ammonia compressor control system. At this time, since the first solenoid valve 10 and the second solenoid valve 11 execute according to the logic of the ammonia compressor control system, a new synthesis gas compressor trip signal is introduced. This can work with the first-stage ammonia cooler 7, the second-stage ammonia cooler 8, and the methanol-washed ammonia cooler 9 to allow the compressor body 3 to have multiple compression stages. For different systems performing work, one or more solenoid valves can be interlocked open as needed to ensure the normal and stable operation of the unit. Furthermore, by utilizing the multiple compression stages, the first solenoid valve 10 or the second solenoid valve 11 can be interlocked open as needed to solve the abnormal surge of the ammonia compressor caused by the shutdown of the synthesis system. This gives the ammonia compressor good anti-surge performance, ensuring the smooth operation of the system. The compressor body 3, in conjunction with the high-pressure cylinder 4, the low-pressure cylinder 6, and the outlet pipe 5, stably produces high-pressure ammonia or liquefied ammonia.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A compressor with an anti-surge structure, comprising a base (1), characterized in that: A fixed plate (2) is fixedly connected to the upper surface of the base (1). A compressor body (3) is fixedly connected to the upper surface of the fixed plate (2). A high-pressure cylinder (4) is fixedly connected to the upper surface of the compressor body (3). An outlet pipe (5) is fixedly connected to the upper surface of the high-pressure cylinder (4). A low-pressure cylinder (6) is fixedly connected to the outer surface of the high-pressure cylinder (4). A first-stage ammonia cooler (7) and a second-stage ammonia cooler (8) are respectively arranged above the base (1). A methanol-washed ammonia cooler (9) is arranged above the base (1). The methanol-washed ammonia cooler (9) is located to the right of the second-stage ammonia cooler (8). A first solenoid valve (10) is fixedly connected to the input end of the first-stage ammonia cooler (7) and the input end of the second-stage ammonia cooler (8). A second solenoid valve (11) is fixedly connected to the input end of the methanol-washed ammonia cooler (9). A connecting pipe (12) is fixedly connected to the other ends of the two first solenoid valves (10) and the second solenoid valve (11).

2. A compressor with an anti-surge structure according to claim 1, characterized in that: The bottom surface of the base (1) is fixedly connected to two support frames (13), and the bottom surfaces of the two support frames (13) are fixedly connected to two mounting plates (14).

3. A compressor with an anti-surge structure according to claim 2, characterized in that: Two reinforcing plates (15) are fixedly connected to one side of the two support frames (13) that are close to each other, and the upper surfaces of the two reinforcing plates (15) are fixedly connected to the bottom surface of the base (1).

4. A compressor with an anti-surge structure according to claim 1, characterized in that: The fixed plate (2) has several mounting bolts (16) internally threaded. The bottom end of each mounting bolt (16) penetrates into the interior of the base (1), and the outer surface of each mounting bolt (16) is threaded to the inner bottom wall of the base (1).

5. A compressor with an anti-surge structure according to claim 1, characterized in that: The outer surface of the first-stage ammonia cooler (7) and the outer surface of the second-stage ammonia cooler (8) are both fixedly connected to two fixing seats (17), and the bottom surface of each fixing seat (17) is fixedly connected to the upper surface of the base (1).

6. A compressor with an anti-surge structure according to claim 1, characterized in that: The outer surface of the methanol washing ammonia cooler (9) is fixedly connected to two stabilizing seats (18), and the bottom surfaces of the two stabilizing seats (18) are fixedly connected to the upper surface of the base (1).

7. A compressor with an anti-surge structure according to claim 1, characterized in that: The bottom surfaces of the two first solenoid valves (10) and the second solenoid valve (11) are fixedly connected to positioning seats (19), and the bottom surface of each positioning seat (19) is fixedly connected to the upper surface of the base (1).

8. A compressor with an anti-surge structure according to claim 1, characterized in that: The outer surface of the connecting pipe (12) is fixedly connected to a connecting flange (20), and the front of the connecting flange (20) has several mounting through holes (21).

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