Adjusting system for stabilizing suction pressure of compressor
By introducing a dual-pipeline regulation system with suction buffer tanks and exhaust buffer tanks into the polysilicon production process, and utilizing the automated control of solenoid valves and pressure gauges, the problem of suction pressure fluctuation in the parallel operation mode of multi-stage compressors was solved, thereby achieving compressor operation stability and energy consumption optimization.
Patent Information
- Application Number
- CN202520864925.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-30
AI Technical Summary
In the polysilicon production process, the system operating conditions are unstable in the parallel operation mode of multi-stage compressors, which leads to fluctuations in suction pressure, affecting the stability of compressor operation and product quality. Existing pressure stabilization solutions have insufficient energy regulation and rely on manual intervention, resulting in system instability and increased energy consumption.
A dual-pipeline control system is adopted, which combines an intake buffer tank and an exhaust buffer tank with a regulating pipeline and a bypass pipeline. Through the automatic control of solenoid valves and pressure gauges, the intake pressure is stably regulated, avoiding manual intervention and responding quickly to pressure fluctuations.
It achieves rapid stabilization of compressor suction pressure, reduces the risk of product quality fluctuations, improves system operational stability and energy consumption optimization, and reduces the frequency of manual operation.
Smart Images
Figure CN223952760U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of compressor pressure stabilizing, in particular to a kind of regulating system of stable compressor suction pressure. BACKGROUND
[0002] In polysilicon production process, the reduction tail gas needs to be pressurized by compressor before subsequent treatment. When using multi-stage compressor parallel operation mode, system instability will cause suction pressure to fluctuate significantly, and then cause compressor shutdown risk. The current pressure stabilization scheme realizes intake pressure regulation by returning compressor exhaust gas to suction inlet, but this measure has the following technical defects:
[0003] 1. Energy regulation mechanism is missing. When the suction flow of compressor fluctuates, the output power of compressor cannot be adjusted synchronously, resulting in system energy consumption optimization not being realized.
[0004] 2. Process control relies too much on manual intervention, operation frequency increases significantly, human error probability increases, affecting system operation stability.
[0005] 3. Insufficient pressure regulation accuracy causes suction / exhaust pressure parameters to fluctuate significantly, directly affecting product quality. INVENTION CONTENTS
[0006] The utility model aims at providing a kind of regulating system of stable compressor suction pressure.
[0007] The utility model is implemented by the following technical solutions:
[0008] A kind of regulating system of stable compressor suction pressure, including suction buffer tank, exhaust buffer tank and compressor, the compressed gas outlet of the suction buffer tank is connected with the import of the compressor, the outlet of the compressor is connected with the compressed gas import of the exhaust buffer tank, the regulating import of the suction buffer tank is connected with the regulating outlet of the exhaust buffer tank by regulating pipeline, the compressed gas outlet of the suction buffer tank is also connected with the compressed gas import of the exhaust buffer tank by bypass pipeline;
[0009] First pressure gauge is installed on the suction buffer tank, first solenoid valve is installed on the regulating pipeline, and the signal output end of the first pressure gauge is electrically connected with the signal input end of the first solenoid valve;
[0010] Second pressure gauge is installed on the suction buffer tank gas inlet, second solenoid valve is installed on the bypass pipeline, and the signal output end of the second pressure gauge is electrically connected with the signal input end of the first solenoid valve and the second solenoid valve.
[0011] Preferably, the compressed gas outlet of the suction buffer tank is connected with the inlet of the intake buffer, the outlet of the intake buffer is connected with the inlet of the compressor, the outlet of the compressor is connected with the inlet of the exhaust buffer, the outlet of the exhaust buffer is connected with the inlet of the cooler, and the outlet of the cooler is connected with the compressed gas inlet of the exhaust buffer tank.
[0012] Preferably, a hand valve is connected in parallel at both ends of the second electromagnetic valve.
[0013] The utility model discloses the advantages of:
[0014] Through the automatic control means, the system parameter is adjusted quickly, the manual regulation lag caused by the compressor suction pressure fluctuation and the system parameter unstable phenomenon caused by the artificial operation factor are avoided effectively, thereby the risk of product quality fluctuation is reduced obviously, and simultaneously the double pipeline joint regulation strategy is adopted, the synchronous regulation of the adjusting pipeline and the bypass pipeline is implemented, the dynamic response time of the compressor suction pressure fluctuation can be shortened obviously, and the system can realize the pressure fluctuation fast convergence to the stable state effectively. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the structural schematic diagram of the utility model.
[0016] In the drawing: suction buffer tank 1, exhaust buffer tank 2, compressor 3, adjusting pipeline 4, bypass pipeline 5, first pressure gauge 6, first electromagnetic valve 7, second pressure gauge 8, second electromagnetic valve 9, intake buffer 10, exhaust buffer 11, cooler 12, hand valve 13. DETAILED DESCRIPTION
[0017] As Figure 1 Shown in a kind of adjusting system of stabilizing compressor suction pressure, including suction buffer tank 1, exhaust buffer tank 2 and compressor 3, the compressed gas outlet of suction buffer tank 1 is connected with the inlet of compressor 3, the outlet of compressor 3 is connected with the compressed gas inlet of exhaust buffer tank 2, the adjusting inlet of suction buffer tank 1 is connected with the adjusting outlet of exhaust buffer tank 2 by adjusting pipeline 4, the compressed gas outlet of suction buffer tank 1 is also connected with the compressed gas inlet of exhaust buffer tank 2 by bypass pipeline 5;
[0018] First pressure gauge 6 is installed on suction buffer tank 1, first electromagnetic valve 7 is installed on adjusting pipeline 4, and the signal output end of first pressure gauge 6 is electrically connected with the signal input end of first electromagnetic valve 7;
[0019] Second pressure gauge 8 is installed on the gas inlet of suction buffer tank 1, second electromagnetic valve 9 is installed on bypass pipeline 5, and the signal output end of second pressure gauge 8 is electrically connected with the signal input end of first electromagnetic valve 7 and second electromagnetic valve 9;
[0020] When the compressor 3 pressurizes the reduction tail gas, the reduction tail gas is sent into the suction buffer tank 1, the compressor 3 draws the reduction tail gas in the suction buffer tank 1, and sends the pressurized reduction tail gas into the exhaust buffer tank 2. Since the tail gas conveying quantity fluctuates under the influence of the reaction device, the reduction tail gas is first buffered and stabilized in pressure by the suction buffer tank 1, and then sent into the compressor 3. If the reduction tail gas fluctuates severely, that is, the pressure of the reduction tail gas fluctuates less than 5.0 MPa or greater than 5.4 MPa, the first pressure gauge 6 detects the pressure in the suction buffer tank 1, and the second pressure gauge 8 detects the pressure at the inlet of the suction buffer tank 1, if the detected pressures of the two pressure gauges exceed the range of 5.0-5.4 MPa for 30 s, the first pressure gauge 6 and the second pressure gauge 8 control the first electromagnetic valve 7 and the second electromagnetic valve 9 to open respectively, the regulation pipeline 4 and the bypass pipeline 5 send the pressurized reduction tail gas in the exhaust buffer tank 2 back to the suction buffer tank 1, so as to ensure the stability of the compressor 3 inlet pressure, and after 5 minutes when the second pressure gauge 8 detects that the entering reduction tail gas is stabilized at 5.0-5.4 MPa, the second pressure gauge 8 sends a signal to the first electromagnetic valve 7 and the second electromagnetic valve 9, and controls the first electromagnetic valve 7 and the second electromagnetic valve 9 to close.
[0021] If the compressors 3 are used in parallel, after fluctuation occurs, in order to avoid excessive regulation of multiple loops and multiple regulating valves to cause parameter fluctuation, only the second electromagnetic valve 9 in the regulating pipeline 4 matched with one of the compressors 3 needs to be put into use.
[0022] The compressed gas outlet of the suction buffer tank 1 is connected with the inlet of the air inlet buffer 10, the outlet of the air inlet buffer 10 is connected with the inlet of the compressor 3, the outlet of the compressor 3 is connected with the inlet of the air outlet buffer 11, the outlet of the air outlet buffer 11 is connected with the inlet of the cooler 12, and the outlet of the cooler 12 is connected with the compressed gas inlet of the exhaust buffer tank 2; the air inlet buffer 10 and the air outlet buffer 11 are used to reduce the vibration caused by the pulsation of the gas flow, and separate impurities at the same time, so as to protect the compressor 3; and the cooler 12 can reduce the temperature of the compressed reduction tail gas, so as to avoid overheating of the equipment caused by high temperature.
[0023] The hand valve 13 is connected in parallel at both ends of the second electromagnetic valve 9, when the compressor 3 fails or the working condition is adjusted, the compressor 3 is cut off, the hand valve 13 is opened, the reduction tail gas can continue to be sent to the subsequent process, and the normal flow of the reduction tail gas is ensured.
[0024] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A regulating system for stabilizing the suction pressure of a compressor, characterized in that, It comprises an air suction buffer tank, an air exhaust buffer tank and a compressor, the compressed air outlet of the air suction buffer tank is connected with the inlet of the compressor, the outlet of the compressor is connected with the compressed air inlet of the air exhaust buffer tank, the regulating inlet of the air suction buffer tank is connected with the regulating outlet of the air exhaust buffer tank through a regulating pipeline, and the compressed air outlet of the air suction buffer tank is also connected with the compressed air inlet of the air exhaust buffer tank through a bypass pipeline. A first pressure gauge is installed on the air suction buffer tank, a first electromagnetic valve is installed on the regulating pipeline, and the signal output end of the first pressure gauge is electrically connected with the signal input end of the first electromagnetic valve. A second pressure gauge is installed on the air inlet of the air suction buffer tank, a second electromagnetic valve is installed on the bypass pipeline, and the signal output end of the second pressure gauge is electrically connected with the signal input ends of the first electromagnetic valve and the second electromagnetic valve.
2. A system for regulating the suction pressure of a compressor as set forth in claim 1, characterized in that, The compressed air outlet of the air suction buffer tank is connected with the inlet of an air inlet buffer, the outlet of the air inlet buffer is connected with the inlet of the compressor, the outlet of the compressor is connected with the inlet of an air exhaust buffer, the outlet of the air exhaust buffer is connected with the inlet of a cooler, and the outlet of the cooler is connected with the compressed air inlet of the air exhaust buffer tank.
3. A system for regulating the pressure of the suction gas of a compressor according to claim 1 or 2, characterized in that, A hand valve is connected in parallel at both ends of the second electromagnetic valve.