Vinyl chloride compression system

Abstract

The utility model provides a vinyl chloride compression system and relates to the technical field of vinyl chloride compression. The vinyl chloride compression system comprises an air inlet filter, a compressor, a separation oil tank, an oil cooler, a bearing temperature sensor, an oil tank temperature sensor, an exhaust pressure sensor and a controller. Key parameters in operation of the compressor can be accurately mastered in real time, the controller controls starting and stopping of the compressor according to signals of the bearing temperature sensor, the oil tank temperature sensor and the exhaust pressure sensor, the probability of occurrence of abnormal conditions of the compressor caused by high temperature and high pressure is reduced, and the frequency of manual overhaul is reduced. And the danger coefficient in the maintenance process is further reduced.

Description

Technical Field

[0001] This application relates to the field of vinyl chloride compression technology, and more specifically, to a vinyl chloride compression system. Background Technology

[0002] The vinyl chloride compression system plays a crucial role in the production and processing of vinyl chloride, and the compressor is the core component of the vinyl chloride compression system, providing power for the compression of vinyl chloride gas.

[0003] In vinyl chloride compression systems, the compressor generates high temperature and high pressure when compressing vinyl chloride gas. However, existing vinyl chloride compression systems lack effective monitoring measures. When the temperature or pressure is too high, it can easily cause compressor malfunctions, leading to negative pressure in the vinyl chloride conversion system and affecting the normal operation of vinyl chloride production. In addition, vinyl chloride is a toxic, flammable, and explosive gas. When the compressor malfunctions, manual maintenance will face great risks.

[0004] Therefore, it is necessary to propose a vinyl chloride compression system to reduce the probability of compressor malfunctions caused by high temperature and high pressure, reduce the frequency of manual maintenance, and thus reduce the risk factor during maintenance. Summary of the Invention

[0005] The purpose of this application is to provide a vinyl chloride compression system that can solve the technical problems mentioned in the background art.

[0006] This application provides a vinyl chloride compression system, including:

[0007] An intake filter for filtering vinyl chloride gas;

[0008] The compressor is used to compress vinyl chloride gas filtered by the intake filter, and the compressed vinyl chloride gas forms a gas-oil mixture with lubricating oil used to lubricate the compressor.

[0009] A separation tank is used to separate the gas-oil mixture so that polyethylene gas and lubricating oil are discharged from different outlets respectively;

[0010] An oil cooler is used to cool the lubricating oil separated from the oil separator tank, and the cooled lubricating oil flows back into the compressor.

[0011] A bearing temperature sensor is used to detect the temperature of the motor bearing of the compressor.

[0012] Oil tank temperature sensor, the oil tank temperature sensor is used to detect the temperature of the separated oil tank and the exhaust temperature;

[0013] An exhaust pressure sensor is used to detect the exhaust pressure of the separating oil tank;

[0014] The controller is used to receive signals from the bearing temperature sensor, the oil tank temperature sensor, and the exhaust pressure sensor, and to control the start and stop of the compressor based on the signals from the bearing temperature sensor, the oil tank temperature sensor, and the exhaust pressure sensor.

[0015] Furthermore, the intake filter, the compressor, and the oil separator are connected in sequence via a compression pipe. The exhaust port of the oil separator is connected to an exhaust pipe. The oil outlet of the oil separator is connected to the oil inlet of the compressor via a return oil pipe. The oil cooler is connected in parallel on the return oil pipe. A temperature control valve is provided at the parallel connection between the oil inlet of the oil cooler and the return oil pipe. The exhaust pressure sensor is located on the exhaust pipe.

[0016] Furthermore, an intake valve is provided on the compression pipe between the intake filter and the compressor, and a one-way valve is provided on the compression pipe in parallel with the intake valve.

[0017] Furthermore, a compressor head temperature sensor and a temperature gauge are sequentially installed on the compression pipeline between the compressor and the oil separator along the flow direction of the gas-oil mixture, and the compressor head temperature sensor is electrically connected to the controller.

[0018] Furthermore, an essential oil separator is provided inside the oil separator at the exhaust port.

[0019] Furthermore, an oil filter is provided between the oil cooler and the compressor, located between the oil return pipe.

[0020] Furthermore, the exhaust port of the oil separator is connected to the air intake filter via a return air pipe. A ball valve and an electric butterfly valve are connected in parallel on the return air pipe, and the electric butterfly valve is connected to a gas holder via a side branch pipe.

[0021] Furthermore, the essential oil separator is connected to the oil return pipe between the oil filter and the compressor via a throttling pipe, and a throttling valve is provided on the throttling pipe.

[0022] Furthermore, there are two compressors connected in parallel, and two oil separators connected in parallel. The bottom unloading ports of the two oil separators are connected to oil drain pipes, and the oil drain pipes are equipped with oil drain valves.

[0023] Furthermore, an exhaust pressure valve is provided on the exhaust pipe, and the exhaust pressure valve is located between the exhaust pressure sensor and the separation oil tank.

[0024] The beneficial effects of this utility model are:

[0025] This invention uses a bearing temperature sensor, an oil tank temperature sensor, and an exhaust pressure sensor to accurately monitor key parameters of the compressor in real time. The controller controls the start and stop of the compressor based on the signals from these sensors, reducing the probability of compressor malfunctions caused by high temperature and high pressure, reducing the frequency of manual maintenance, and thus lowering the risk factor during maintenance. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a flowchart of some embodiments of the present application;

[0028] The reference numerals in the attached figures are as follows:

[0029] 1. Intake filter; 2. Compressor; 3. Separator oil tank; 4. Oil cooler; 5. Bearing temperature sensor; 6. Oil tank temperature sensor; 7. Exhaust pressure sensor; 8. Compression pipe; 9. Exhaust pipe; 10. Return oil pipe; 11. Thermostatic valve; 12. Intake valve; 13. Check valve; 14. Compressor head temperature sensor; 15. Thermometer; 16. Oil separator; 17. Oil filter; 18. Return air pipe; 19. Ball valve; 20. Electric butterfly valve; 21. Bypass pipe; 22. Oil drain pipe; 23. Oil drain valve; 24. Exhaust pressure valve. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific implementation examples:

[0037] like Figure 1As shown, this application provides a vinyl chloride compression system, including an intake filter 1, a compressor 2, a separator oil tank 3, an oil cooler 4, a bearing temperature sensor 5, an oil tank temperature sensor 6, an exhaust pressure sensor 7, and a controller. The intake filter 1 filters vinyl chloride gas, the compressor 2 compresses the filtered vinyl chloride gas, and the compressed vinyl chloride gas mixes with lubricating oil used to lubricate the compressor 2. The separator oil tank 3 separates the mixture, allowing the vinyl chloride gas and lubricating oil to exit from different outlets. The oil cooler 4 cools the lubricating oil separated from the separator oil tank 3, and the cooled lubricating oil flows back into the compressor 2. The bearing temperature sensor 5 detects the temperature of the motor bearings of the compressor 2, the oil tank temperature sensor 6 detects the temperature of the separator oil tank 3 and the exhaust temperature, the exhaust pressure sensor 7 detects the exhaust pressure of the separator oil tank 3, and the controller receives signals from the bearing temperature sensor 5, the oil tank temperature sensor 6, and the exhaust pressure sensor 7, and controls the start and stop of the compressor 2 based on these signals. Bearing temperature sensor 5, oil tank temperature sensor 6, and exhaust pressure sensor 7 are electrically connected to the controller. When the motor bearing temperature of compressor 2 exceeds the preset threshold of bearing temperature sensor 5, bearing temperature sensor 5 sends a signal to the controller, and the controller controls compressor 2 to stop running based on the signal from bearing temperature sensor 5. When the temperature of separation oil tank 3 or the exhaust temperature exceeds the preset threshold of oil tank temperature sensor 6, oil tank temperature sensor 6 sends a signal to the controller, and the controller controls compressor 2 to stop running based on the signal from oil tank temperature sensor 6. When the exhaust pressure exceeds the preset threshold of exhaust pressure sensor 7, exhaust pressure sensor 7 sends a signal to the controller, and the controller controls compressor 2 to stop running based on the signal from exhaust pressure sensor 7. Through bearing temperature sensor 5, oil tank temperature sensor 6, and exhaust pressure sensor 7, key parameters of compressor 2 can be monitored in real time and accurately. The controller controls the start and stop of compressor 2 based on the signals from bearing temperature sensor 5, oil tank temperature sensor 6, and exhaust pressure sensor 7, reducing the probability of compressor 2 malfunctions caused by high temperature and high pressure, reducing the frequency of manual maintenance, and thus reducing the risk factor during maintenance.

[0038] like Figure 1As shown, the intake filter 1, compressor 2, and oil separator 3 are connected sequentially via compression pipe 8. The exhaust port of oil separator 3 is connected to exhaust pipe 9. The oil outlet of oil separator 3 is connected to the oil inlet of compressor 2 via return oil pipe 10. Oil coolers 4 are connected in parallel on return oil pipe 10. A temperature control valve 11 is installed at the connection point between the oil inlet of oil cooler 4 and the parallel connection of return oil pipe 10. Exhaust pressure sensor 7 is installed on exhaust pipe 9. Return oil pipe 10 connects oil separator 3 to the oil inlet of compressor 2, realizing the recycling of lubricating oil. The oil coolers 4 are connected in parallel and connected via temperature control valve 11. In this embodiment, when the lubricating oil temperature rises, the temperature control valve 11 can automatically adjust its opening according to the preset temperature, so that some or all of the lubricating oil flows through the oil cooler 4 to cool down before returning to the compressor 2. This ensures that the compressor 2 always receives lubricating oil at a suitable temperature during operation, maintains good lubrication, reduces wear and increased energy consumption of compressor 2 components caused by excessively high or low oil temperatures, ensures stable operation of the compressor 2, and thus improves the stability of the entire vinyl chloride compression system. In this embodiment, the oil cooler 4 is a water cooler, which exchanges heat with the lubricating oil through condensate to cool the lubricating oil.

[0039] like Figure 1 As shown, an intake valve 12 is provided on the compression pipe 8 between the intake filter 1 and the compressor 2. A one-way valve 13 connected in parallel with the intake valve 12 is provided on the compression pipe 8. The intake valve 12 can regulate the flow rate and timing of vinyl chloride gas entering the compressor 2. During the start-up phase of the compressor 2, by reasonably adjusting the opening of the intake valve 12, the inflow rate of the gas can be controlled, avoiding the impact on the internal components of the compressor 2 due to excessive instantaneous intake volume, thus extending the service life of the compressor 2. During normal operation, the intake volume can be flexibly adjusted according to system requirements to match different working conditions and ensure stable system operation. When the intake valve 12 malfunctions or needs maintenance and repair, the one-way valve 13 connected in parallel with it can ensure unidirectional gas flow, prevent gas from flowing back into the intake filter 1, maintain stable pressure in the system, and avoid unstable operating conditions such as surge of the compressor 2 due to abnormal intake.

[0040] like Figure 1As shown, a compressor head temperature sensor 14 and a thermometer 15 are sequentially installed on the compression pipeline 8 between the compressor 2 and the oil separator 3 along the flow direction of the gas-oil mixture. The compressor head temperature sensor 14 is electrically connected to the controller. The compressor head temperature sensor 14 can monitor the temperature change of the compressor head in real time and transmit the signal to the controller. When the temperature of the compressor head exceeds the preset threshold, the compressor head temperature sensor 14 transmits the signal to the controller. The controller controls the compressor 2 to stop running based on the signal from the compressor head temperature sensor 14. The compressor head temperature sensor 14 is used in conjunction with the thermometer 15. The thermometer 15 provides an intuitive temperature display on site, which makes it easy for operators to quickly check the approximate temperature on site. The electrical signal transmission of the compressor head temperature sensor 14 provides support for remote monitoring and automated control.

[0041] like Figure 1 As shown, an oil separator 16 is installed inside the oil separation tank 3 at the exhaust port. After the initial gas-oil separation in the oil separation tank 3, the gas may still carry a small amount of tiny oil droplets or oil mist. The oil separator 16 can further refine the separation of these residual oils, remove oil from the gas to the maximum extent, improve the purity of vinyl chloride gas, and at the same time, effectively prevent oil from entering downstream pipelines, equipment and instruments, avoid oil from adhering and accumulating on the inner wall of the pipeline, reduce the cross-sectional area and resistance of the pipeline flow, extend the service life of the pipeline, prevent oil from corroding and damaging the equipment, reduce equipment maintenance costs, ensure the normal operation of the equipment, protect the precision downstream instruments from oil contamination interference, and ensure the accuracy of detection.

[0042] like Figure 1 As shown, an oil filter 17 is installed between the oil cooler 4 and the compressor 2, located between the oil return pipe 10. During the lubricating oil circulation process, the oil filter 17 can effectively filter out impurities, ensuring that pure lubricating oil enters the compressor 2, providing a good lubrication environment for the compressor 2, and ensuring the stable operation of the compressor 2.

[0043] like Figure 1 As shown, the exhaust port of the separator oil tank 3 is connected to the intake filter 1 through the return gas pipe 18. A ball valve 19 and an electric butterfly valve 20 are connected in parallel on the return gas pipe 18. The electric butterfly valve 20 is connected to the gas holder through the bypass pipe 21. When the pressure inside the separator oil tank 3 is too high, the gas can flow back to the front end of the intake filter 1 through the return gas pipe 18 for pressure regulation. This helps to maintain the stability of the internal pressure of the entire vinyl chloride compression system and prevents the compressor 2, separator oil tank 3 and other equipment from being damaged by excessive pressure. At the same time, the excess gas can be stored in the gas holder through the bypass pipe 21 to further regulate the system pressure and enable the system to maintain a relatively stable pressure state under different operating conditions.

[0044] like Figure 1As shown, the oil separator 16 is connected to the oil return pipe 10 between the oil filter 17 and the compressor 2 via a throttling pipe. The throttling pipe is equipped with a throttling valve, which can precisely control the flow rate of lubricating oil passing through the oil separator 16. During the operation of the compressor 2, the circulation volume of lubricating oil needs to be maintained within a suitable range. Through the adjustment of the throttling valve, it can be ensured that the lubricating oil flowing out of the oil separator 16 flows to the oil return pipe 10 at a stable flow rate and then returns to the compressor 2. The stable return flow rate helps to maintain the balance of the internal lubrication system of the compressor 2, ensuring that each component receives an appropriate amount of lubricating oil, reducing problems such as poor lubrication or local oil accumulation caused by fluctuations in the lubricating oil flow rate, and extending the service life of the compressor 2.

[0045] like Figure 1 As shown, there are two compressors 2 connected in parallel, and two oil separators 3 connected in parallel. The bottom unloading ports of the two oil separators 3 are connected to drain pipes 22, and drain valves 23 are installed on the drain pipes. The parallel connection of the two compressors 2 allows for flexible adjustment of their operating status according to production needs and load changes. The two oil separators 3 can also better adapt to different gas-oil separation tasks, improving separation efficiency and processing capacity. The drain pipes 22 and drain valves 23 connecting the bottom unloading ports of the two oil separators 3 allow for rapid discharge of oil from the oil separators 3 when emergency oil discharge or equipment cleaning and maintenance is required. This helps to promptly address potential safety hazards such as oil leaks, improves emergency response efficiency, and ensures safety at the production site.

[0046] like Figure 1 As shown, an exhaust pressure valve 24 is installed on the exhaust pipe 9. The exhaust pressure valve 24 is located between the exhaust pressure sensor 7 and the separating oil tank 3. The exhaust pressure valve 24 can accurately adjust the pressure in the separating oil tank 3 according to the pressure range set by the system. When the pressure in the separating oil tank 3 exceeds the set upper limit, the exhaust pressure valve 24 automatically opens to release some gas to reduce the pressure. When the pressure in the separating oil tank 3 is lower than the set lower limit, the exhaust pressure valve 24 closes to ensure that the system maintains a suitable pressure level. Precise pressure control helps to ensure the stable operation of the entire vinyl chloride compression system and avoid adverse effects on equipment and processes due to excessively high or low pressure.

[0047] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vinyl chloride compression system, characterized in that, include: An intake filter for filtering vinyl chloride gas; The compressor is used to compress vinyl chloride gas filtered by the intake filter, and the compressed vinyl chloride gas forms a gas-oil mixture with lubricating oil used to lubricate the compressor. A separation tank is used to separate the gas-oil mixture so that polyethylene gas and lubricating oil are discharged from different outlets respectively; An oil cooler is used to cool the lubricating oil separated from the oil separator tank, and the cooled lubricating oil flows back into the compressor. A bearing temperature sensor is used to detect the temperature of the motor bearing of the compressor. Oil tank temperature sensor, the oil tank temperature sensor is used to detect the temperature of the separated oil tank and the exhaust temperature; An exhaust pressure sensor is used to detect the exhaust pressure of the separating oil tank; The controller is used to receive signals from the bearing temperature sensor, the oil tank temperature sensor, and the exhaust pressure sensor, and to control the start and stop of the compressor based on the signals from the bearing temperature sensor, the oil tank temperature sensor, and the exhaust pressure sensor.

2. The vinyl chloride compression system according to claim 1, characterized in that: The intake filter, the compressor, and the oil separator are connected in sequence via a compression pipe. The exhaust port of the oil separator is connected to an exhaust pipe. The oil outlet of the oil separator is connected to the oil inlet of the compressor via a return oil pipe. The oil cooler is connected in parallel on the return oil pipe. A temperature control valve is provided at the parallel connection between the oil inlet of the oil cooler and the return oil pipe. The exhaust pressure sensor is located on the exhaust pipe.

3. The vinyl chloride compression system according to claim 2, characterized in that: An intake valve is provided on the compression pipe between the intake filter and the compressor, and a one-way valve is provided on the compression pipe in parallel with the intake valve.

4. The vinyl chloride compression system according to claim 3, characterized in that: A compressor head temperature sensor and a temperature gauge are sequentially installed on the compression pipeline between the compressor and the oil separator along the flow direction of the gas-oil mixture. The compressor head temperature sensor is electrically connected to the controller.

5. A vinyl chloride compression system according to claim 2, characterized in that: An essential oil separator is installed inside the oil separator at the exhaust port.

6. A vinyl chloride compression system according to claim 2, characterized in that: An oil filter is provided between the oil cooler and the compressor, located between the oil return pipe.

7. A vinyl chloride compression system according to claim 1, characterized in that: The exhaust port of the oil separator is connected to the air intake filter through a return gas pipe. A ball valve and an electric butterfly valve are connected in parallel on the return gas pipe. The electric butterfly valve is connected to a gas holder through a side branch pipe.

8. A vinyl chloride compression system according to claim 5, characterized in that: The essential oil separator is connected to the oil return pipe between the oil filter and the compressor via a throttling pipe, and a throttling valve is provided on the throttling pipe.

9. A vinyl chloride compression system according to claim 1, characterized in that: The compressor is provided in two parallel configurations. The oil separator is provided in two parallel configurations. The bottom unloading ports of the two oil separators are connected to oil drain pipes, and the oil drain pipes are equipped with oil drain valves.

10. A vinyl chloride compression system according to claim 2, characterized in that: An exhaust pressure valve is provided on the exhaust pipe, and the exhaust pressure valve is located between the exhaust pressure sensor and the separation oil tank.

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