Compressor sealing pressure-stabilizing control mechanism

Abstract

The utility model provides a sealing pressure-stabilizing control mechanism of a compressor, and belongs to the technical field of compressors. The problems that the sealing and pressure stabilizing control precision of an existing compressor is low, the pressure intensity and sealing in the compressor cannot be monitored in real time, and the requirement for high-precision industrial application is difficult to meet are solved. The device comprises a compressor impeller, a pressure stabilizing control valve, a sealing monitoring box, a gas circulation pipeline and a control system, the compressor impeller, the pressure stabilizing control valve and the sealing monitoring box are all arranged on the gas circulation pipeline and connected with the control system, and the compressor impeller is arranged at the front end of the pressure stabilizing control valve in the gas flowing direction. And the gas circulation pipeline comprises a plurality of seamless steel pipe pipelines which are connected in sequence. The device is mainly used for sealing pressure stabilization control of the compressor.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a compressor sealing and pressure stabilizing control mechanism. Background Art

[0002] As industrial technology continues to advance, compressors, as key power equipment, have been widely used in numerous fields. However, existing compressor technology faces numerous practical challenges. Regarding sealing, conventional compressor structures often fail to effectively address gas leakage, resulting in unsatisfactory sealing performance. This not only wastes gas during compressor operation, reducing energy efficiency, but also potentially impacts the operational stability of the entire system. For example, in industrial production processes requiring strict gas sealing, gas leakage can compromise product quality, increase defective rates, and ultimately increase production costs. Regarding pressure control, existing compressors have low precision and lack real-time monitoring of pressure and sealing within the compressor, making them inadequate for high-precision industrial applications. Unstable pressure output can cause connected equipment to malfunction, impacting the stability of the entire production process and product quality. For example, in certain precision machining processes, pressure fluctuations can lead to reduced machining accuracy and failure to meet expected product specifications. Furthermore, due to deficiencies in sealing and pressure control, compressors require more frequent maintenance and overhauls during operation, which undoubtedly increases maintenance costs, reduces production efficiency, and imposes a financial burden on enterprises. Therefore, a new compressor seal pressure stabilization control method is urgently needed to overcome the defects of the existing technology and improve the overall performance of the compressor. Utility Model Content

[0003] In view of this, the utility model aims to propose a compressor sealing and pressure stabilization control mechanism to solve the problem that the sealing and pressure stabilization control accuracy of existing compressors is low, and the pressure and sealing inside the compressor cannot be monitored in real time, which makes it difficult to meet the needs of high-precision industrial applications.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a compressor sealing pressure stabilizing control mechanism, which includes a compressor impeller, a pressure stabilizing control valve, a sealing monitoring box, a gas circulation pipeline and a control system, the compressor impeller, the pressure stabilizing control valve and the sealing monitoring box are all arranged on the gas circulation pipeline and are all connected to the control system, the compressor impeller is arranged at the front end of the pressure stabilizing control valve along the gas flow direction, the air inlet of the gas circulation pipeline is provided with a first pressure difference sensor and a first temperature sensor, the air outlet of the gas circulation pipeline is provided with a second pressure difference sensor and a second temperature sensor, the first pressure difference sensor, the first temperature sensor, the second pressure difference sensor and the second temperature sensor are all connected to the control system, the gas circulation pipeline includes a plurality of seamless steel pipes connected in sequence, and two adjacent seamless steel pipes are connected by an interface flange, and a sealing monitoring box is provided on the outer side of the interface flange.

[0005] Furthermore, the pressure-stabilizing control valve includes a valve body shell, a valve seat, a valve stem, a valve core and a valve stem controller. The valve seat is arranged at the bottom of the valve body shell and is connected to the gas flow pipeline. The valve stem controller is arranged at the top of the valve body shell and the output end of the valve stem controller is connected to the valve stem. The valve stem is moved and arranged in the valve body shell through the valve stem controller. The bottom of the valve stem is connected to the valve core. The valve core is moved and arranged in the valve seat through the valve stem and cooperates with the mating surface in the valve seat.

[0006] Furthermore, the valve stem controller is connected to a control system.

[0007] Furthermore, a stroke pointer is provided on the valve stem, and a stroke scale matching the stroke pointer is provided on the valve body shell.

[0008] Furthermore, a packing seal is provided between the valve body shell and the valve seat.

[0009] Furthermore, the sealed monitoring box includes a box body, a sealing ring and a gas pressure sensor. The box body is sleeved on the outside of the interface flange. Sealing rings are provided between both ends of the box body and the interface flange. A gas pressure sensor is provided on the box body, and the gas pressure sensor is connected to the control system.

[0010] Furthermore, the box body of the sealed monitoring box is a split structure with upper and lower parts, and the box body includes an upper box body and a lower box body, and the upper box body and the lower box body are connected by fastening bolts.

[0011] Furthermore, the control system is a PLC control system.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model provides a compressor sealing pressure stabilization control mechanism. A pressure differential sensor and a temperature sensor are provided at the air inlet and air outlet of a gas circulation pipeline. The pressure differential sensor and the temperature sensor collect the parameters of the compressor air inlet and air outlet. After being processed by the control system, the sealing parameters of the pressure stabilization control valve are controlled, thereby realizing adaptive adjustment of the pressure difference between the air inlet and the air outlet within a certain range. This enables the compressor output gas state to be accurately controlled, ensures the stable operation of the system, and improves the reliability and stability of the compressor operation.

[0014] 2. The utility model installs a sealing monitoring box and a gas pressure sensor at the interface flange in the gas circulation pipeline of the compressor. By monitoring the pressure changes in the box body of the sealing monitoring box, the leakage at the interface flange in the gas circulation pipeline can be accurately judged. After eliminating the interference of ambient temperature changes, when the pressure inside the box body of the sealing monitoring box is greater than the ambient pressure, the leakage point can be discovered in time, realizing effective monitoring of gas circulation pipeline leakage, helping to take repair measures in time, avoiding the impact of gas leakage on system balance, and reducing the safety hazards and energy loss caused by leakage;

[0015] 3. The utility model can dynamically adjust the sealing parameters according to the real-time operating status of the compressor, so that the sealing effect is always kept in the best state, extending the service life of the sealing components and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a structural diagram of a compressor sealing and pressure stabilizing control mechanism according to the present utility model;

[0018] Figure 2 The utility model is a structural schematic diagram of a sealing monitoring box in a compressor sealing pressure stabilization control mechanism.

[0019] 1-gas flow pipeline, 2-air inlet, 3-air outlet, 4-compressor impeller, 5-seal monitoring box, 6-control system, 7-valve body housing, 8-valve stem controller, 9-valve stem, 10-valve core, 11-stroke pointer, 12-stroke scale, 13-valve seat, 14-matching surface, 15-packing seal, 16-box body, 17-seamless steel pipe, 18-interface flange, 19-gas pressure sensor, 20-sealing ring, 21-fastening bolts. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0021] See also Figure 1-2 Describe this embodiment, a compressor sealing pressure stabilization control mechanism, which includes a compressor impeller 4, a pressure stabilization control valve, a sealing monitoring box 5, a gas circulation pipeline 1 and a control system 6, wherein the compressor impeller 4, the pressure stabilization control valve and the sealing monitoring box 5 are all arranged on the gas circulation pipeline 1 and are all connected to the control system 6, the compressor impeller 4 is arranged at the front end of the pressure stabilization control valve along the gas flow direction, the air inlet 2 of the gas circulation pipeline 1 is provided with a first pressure difference sensor and a first temperature sensor, the air outlet 3 of the gas circulation pipeline 1 is provided with a second pressure difference sensor and a second temperature sensor, the first pressure difference sensor, the first temperature sensor, the second pressure difference sensor and the second temperature sensor are all connected to the control system 6 The gas circulation pipeline 1 includes a plurality of seamless steel pipes 17 connected in sequence, and two adjacent seamless steel pipes 17 are connected by an interface flange 18. A sealing monitoring box 5 is sleeved on the outer side of the interface flange 18. A pressure difference sensor and a temperature sensor are provided at the air inlet 2 and the air outlet 3 of the gas circulation pipeline 1. The parameters of the compressor air inlet and the air outlet are collected by the pressure difference sensor and the temperature sensor, and the sealing parameters of the pressure stabilizing control valve are controlled after processing by the control system 6, thereby realizing adaptive adjustment of the pressure difference between the air inlet 2 and the air outlet 3 within a certain range. This enables the compressor output gas state to be accurately controlled, ensures the stable operation of the system, and improves the reliability and stability of the compressor operation.

[0022] The sealed monitoring box 5 described in this embodiment includes a box body 16, a sealing ring 20 and a gas pressure sensor 19. The box body 16 is sleeved on the outside of the interface flange 18. Sealing rings 20 are provided between the two ends of the box body 16 and the interface flange 18. A gas pressure sensor 19 is provided on the box body 16, and the gas pressure sensor 19 is connected to the control system 6. The sealed monitoring box 5 and the gas pressure sensor 19 are placed at the interface flange 18 in the compressor gas circulation pipeline. By monitoring the pressure changes in the box body 16 of the sealed monitoring box 5, the leakage at the interface flange 18 in the gas circulation pipeline 1 can be accurately judged. After eliminating the interference of ambient temperature changes, when the pressure in the box body 16 of the sealed monitoring box 5 is greater than the ambient pressure, the leakage point can be found in time, thereby realizing effective monitoring of the leakage of the gas circulation pipeline 1, helping to take repair measures in time, avoiding the impact of gas leakage on the system balance, and reducing the safety hazards and energy losses that may be caused by leakage.

[0023] In this embodiment, the first differential pressure sensor and the second differential pressure sensor are respectively used to measure the pressure and flow of the air inlet 2 and the air outlet 3 of the gas circulation pipeline 1, the first temperature sensor and the second temperature sensor are respectively used to measure the temperature of the air inlet 2 and the air outlet 3 of the gas circulation pipeline 1, and the gas pressure sensor 19 is used to measure the gas pressure value in the box body 16 of the sealed monitoring box 5, wherein the pressures of the air inlet 2 and the air outlet 3 are P1 and P2 respectively, the flow rates of the air inlet 2 and the air outlet 3 are V1 and V2 respectively, and the temperatures of the air inlet 2 and the air outlet 3 are T1 and T2 respectively, and the gas pressure value in the sealed monitoring box 5 is A.

[0024] In this embodiment, when the value of P2-P1 is equal to the system standard value, the pressure of the pressure stabilizing control valve and the position of the valve core 10 are kept unchanged. When the value of P2-P1 is not equal to the system standard value, the pressure of the pressure stabilizing control valve and the position of the valve core 10 are controlled until the value of P2-P1 is equal to the system standard value.

[0025] In this embodiment, a heat exchanger is used to adjust the temperature of the mechanism. The structure of the heat exchanger and the adjustment of its heat exchange parameters are all existing technologies and will not be described in detail here. When the value of T2-T1 is equal to the system standard value, the heat exchange parameters of the system heat exchanger are kept unchanged. When the value of T2-T1 is not equal to the system standard value, the system heat exchange parameters are changed until the value of P2-P1 is equal to the system standard value.

[0026] In this embodiment, when the value of V2 is equal to the system standard value, the current operating parameters of the system are kept unchanged. When the value of V2 is not equal to the system standard value, the speed of the compressor impeller 4 and the value of the flow rate V1 of the air inlet 2 are adjusted until the value of V2 is equal to the system standard value.

[0027] In this embodiment, when the gas pressure value A in the sealing monitoring box 5 is greater than 0, it is necessary to dismantle and inspect the sealing performance of the sealing portion of the interface flange 18 corresponding to the corresponding sealing monitoring box 5 until the sealing performance of the portion is qualified.

[0028] The pressure-stabilizing control valve in this embodiment includes a valve body shell 7, a valve seat 13, a valve stem 9, a valve core 10 and a valve stem controller 8. The valve seat 13 is arranged at the bottom of the valve body shell 7 and is connected to the gas flow pipeline 1. The valve stem controller 8 is arranged at the top of the valve body shell 7 and the output end of the valve stem controller 8 is connected to the valve stem 9. The valve stem 9 is moved and arranged in the valve body shell 7 through the valve stem controller 8. The bottom of the valve stem 9 is connected to the valve core 10. The valve core 10 is moved and arranged in the valve seat 13 through the valve stem 9 and cooperates with the mating surface 14 in the valve seat 13.

[0029] The valve stem controller 8 in this embodiment includes a drive motor and a mechanical transmission mechanism. The motor drives the valve stem 9 to perform linear motion through the mechanical transmission mechanism. Its specific structure and connection method with the valve stem 9 are all existing technologies and will not be described here.

[0030] In this embodiment, the valve stem controller 8 is connected to the control system 6 , and the valve stem controller 8 converts the control signal output by the control system 6 into the linear motion of the valve stem 9 .

[0031] In this embodiment, a stroke pointer 11 is provided on the valve stem 9, and a stroke scale 12 is provided on the valve body housing 7 to match the stroke pointer 11. The stroke pointer 11 and the stroke scale 12 are used to judge the opening of the pressure-stabilizing control valve, that is, the pressure of the valve core 10 and the gap between it and the mating surface 14.

[0032] In this embodiment, a packing seal 15 is provided between the valve body shell 7 and the valve seat 13 . The packing seal 15 is used for sealing between the valve body shell 7 , the valve seat 13 and the valve stem 9 .

[0033] In this embodiment, the box body 16 of the sealed monitoring box 5 is a split structure, and the box body 16 includes an upper box body 16 and a lower box body 16 . The upper box body 16 and the lower box body 16 are connected by fastening bolts 21 .

[0034] In this embodiment, the control system 6 is a PLC control system. By collecting relevant signal parameters, the PLC control system monitors changes in these parameters in real time and sets control strategies based on system requirements. When operating temperature and pressure differential parameters deviate from the set parameters, the system automatically adjusts them back to a stable state. This control method is highly flexible and can adapt to different operating conditions and operational requirements, ensuring stable operation of the compressor under various conditions.

[0035] The PLC control system adjusts the corresponding input parameters to achieve the goal of controlling the output. In this embodiment, the degree of sealing can be used as an adjustment factor, achieved by changing the pressure and clearance between the pressure-stabilizing control valve and the valve core 10. The sealing adjustment of the entire system is tested at multiple locations and then centralized in one place. Through monitoring, leaks at locations other than the control valve are eliminated, which can maximize the system's pressure control accuracy and improve the system efficiency of the compressor.

[0036] In this embodiment, the parameters of the system parameter monitoring and feedback can be increased or decreased as appropriate according to actual needs, such as increasing the compressor speed detection or reducing the temperature detection of the air inlet 2.

[0037] This embodiment takes into account both system parameter feedback and leakage detection, which can not only effectively control the seal, but also monitor the system operation status in real time, providing strong support for the intelligent management and maintenance of the compressor, and improving the overall management level and economic benefits of the compressor operation.

[0038] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. These embodiments do not exhaust all details, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A compressor sealing pressure stabilization control mechanism, characterized by: It comprises a compressor impeller (4), a pressure stabilizing control valve, a sealing monitoring box (5), a gas circulation pipeline (1) and a control system (6). The compressor impeller (4), the pressure stabilizing control valve and the sealing monitoring box (5) are all arranged on the gas circulation pipeline (1) and are all connected to the control system (6). The compressor impeller (4) is arranged at the front end of the pressure stabilizing control valve along the gas flow direction. The gas inlet (2) of the gas circulation pipeline (1) is provided with a first differential pressure sensor and a first temperature sensor. The gas outlet (3) of the gas circulation pipeline (1) is provided with a second differential pressure sensor and a second temperature sensor. The first differential pressure sensor, the first temperature sensor, the second differential pressure sensor and the second temperature sensor are all connected to the control system (6). The gas circulation pipeline (1) comprises a plurality of seamless steel pipes (17) connected in sequence. Two adjacent seamless steel pipes (17) are connected by an interface flange (18). The outer side of the interface flange (18) is provided with a sealing monitoring box (5).

2. A compressor sealing and stabilizing pressure control mechanism according to claim 1, characterized in that: The pressure-stabilizing control valve comprises a valve body shell (7), a valve seat (13), a valve stem (9), a valve core (10) and a valve stem controller (8); the valve seat (13) is arranged at the bottom of the valve body shell (7) and is connected to the gas flow pipeline (1); the valve stem controller (8) is arranged at the top of the valve body shell (7) and the output end of the valve stem controller (8) is connected to the valve stem (9); the valve stem (9) is moved and arranged in the valve body shell (7) through the valve stem controller (8); the bottom of the valve stem (9) is connected to the valve core (10); the valve core (10) is moved and arranged in the valve seat (13) through the valve stem (9) and is matched with the matching surface (14) in the valve seat (13).

3. A compressor sealing and stabilizing pressure control mechanism according to claim 2, characterized in that: The valve stem controller (8) is connected to the control system (6).

4. A compressor sealing and stabilizing pressure control mechanism according to claim 2, characterized in that: The valve stem (9) is provided with a travel pointer (11), and the valve body shell (7) is provided with a travel scale (12) matched with the travel pointer (11).

5. The compressor sealing and stabilizing pressure control mechanism according to claim 2, characterized in that: A packing seal (15) is provided between the valve body shell (7) and the valve seat (13).

6. The compressor sealing and stabilizing pressure control mechanism according to claim 1, characterized in that: The sealed monitoring box (5) comprises a box body (16), a sealing ring (20) and a gas pressure sensor (19); the box body (16) is sleeved on the outside of the interface flange (18); sealing rings (20) are provided between both ends of the box body (16) and the interface flange (18); a gas pressure sensor (19) is provided on the box body (16); and the gas pressure sensor (19) is connected to the control system (6).

7. A compressor sealing and pressure stabilizing control mechanism according to claim 6, characterized in that: The box body (16) of the sealed monitoring box (5) is a split structure, comprising an upper box body (16) and a lower box body (16), and the upper box body (16) and the lower box body (16) are connected by fastening bolts (21).

8. The compressor sealing and stabilizing pressure control mechanism according to claim 1, characterized in that: The control system (6) is a PLC control system.

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