CN216842123U - Natural gas compressor set system - Google Patents
Natural gas compressor set system Download PDFInfo
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- CN216842123U CN216842123U CN202220316572.0U CN202220316572U CN216842123U CN 216842123 U CN216842123 U CN 216842123U CN 202220316572 U CN202220316572 U CN 202220316572U CN 216842123 U CN216842123 U CN 216842123U
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Abstract
The application discloses natural gas compressor unit system relates to the field of petroleum equipment, and aims to solve the problem that whether the inlet pressure of a compressor air inlet exceeds a design pressure range is not accurate through manual judgment, and the pressure regulation of the air inlet is not facilitated. Natural gas compressor group system, including the compressor, the reflux valve, first pressure sensor and controller, the compressor has air inlet and gas vent, air inlet and gas vent are through first pipeline intercommunication, the reflux valve intercommunication sets up on first pipeline, first pressure sensor sets up at the air inlet, the pressure of first pressure sensor monitoring air inlet, the controller is connected with first pressure sensor and reflux valve electricity respectively, the controller is according to the pressure of the air inlet of first pressure sensor monitoring, with the aperture of control reflux valve. The application natural gas compressor set system is used for adjusting the pressure of the air inlet.
Description
Technical Field
The application relates to the field of petroleum equipment, in particular to a natural gas compressor set system.
Background
At present, natural gas compressor units commonly used in oil and gas fields are mainly applied to the fields of water drainage and gas recovery, gas collection treatment, pressurized input natural gas pipe networks, pipeline pressurized conveying, underground gas storage and the like in the development of the oil and gas fields.
The natural gas compressor unit is influenced by the number of the upstream gas wells in operation, the fluctuation of the gas production rate of a single well, the regulation and control state of a pipe network and the like, so that the air inlet pressure of an air inlet of the natural gas compressor unit can fluctuate frequently, and if the air inlet pressure exceeds the designed pressure range of the natural gas compressor unit, the unit can be stopped, the power can be exceeded, and even the unit can be damaged.
Generally, on site, workers need to judge whether the air inlet pressure of the air inlet of the natural gas compressor unit exceeds a designed pressure range, and then the pressure of the air inlet of the natural gas compressor unit is regulated to stabilize the air inlet pressure of the air inlet.
However, the field worker determines whether the inlet pressure of the air inlet exceeds the designed pressure range, which is often inaccurate and not beneficial to the pressure regulation of the air inlet.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a natural gas compressor group system, and the main objective is under the prerequisite of realization to the natural gas pressure boost, is convenient for to the inlet pressure regulating of air inlet.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
the utility model provides a natural gas compressor group system, including the compressor, the reflux valve, first pressure sensor and controller, the compressor has air inlet and gas vent, air inlet and gas vent pass through the pipeline intercommunication, the reflux valve intercommunication sets up on first pipeline, first pressure sensor sets up at the air inlet, the pressure of first pressure sensor monitoring air inlet, the controller is connected with first pressure sensor electricity respectively and the reflux valve electricity is connected, the controller is according to the pressure of the air inlet of first pressure sensor monitoring, with the aperture of control reflux valve.
The natural gas compressor group system that this application embodiment provided monitors the atmospheric pressure value that admits air of air inlet through first pressure sensor, gives the controller with signal transmission again, is provided with the preset atmospheric pressure value that admits air at the design pressure scope of air inlet in the controller, judges the atmospheric pressure value that admits air of air inlet through the controller and whether surpasss the design pressure scope of air inlet. When the air inlet pressure of the air inlet is overlarge, the opening degree of the return valve is reduced, so that the natural gas returning from the exhaust port is reduced, the air inlet pressure of the air inlet is reduced, and the problems of shutdown, damage and the like of the compressor are effectively avoided; when air inlet pressure is too small, the aperture of increase backward flow valve to the natural gas from the gas vent backward flow increases, increases the inlet pressure of air inlet, thereby adjusts the inlet pressure of air inlet, has ensured the continuous pressure boost to the natural gas, consequently, has reduced the influence of human factor, is convenient for to the inlet pressure regulating of air inlet, effectively stabilizes the inlet pressure of air inlet.
In some possible embodiments of the present application, the controller has a first port and a second port, the first pressure sensor is electrically connected to the first port, the second port is electrically connected to the reflux valve, the controller collects a first air pressure value obtained by the first pressure sensor, the first air pressure value is greater than a preset intake air pressure value, and sends a first control instruction to the reflux valve, the first control instruction indicates that the valve opening of the reflux valve is decreased, the first air pressure value is less than or equal to the preset intake air pressure value, and sends a second control instruction to the reflux valve, and the second control instruction indicates that the valve opening of the reflux valve is increased.
When the first air pressure value acquired by the controller through acquiring the first pressure sensor is larger than the preset air inlet pressure value, the controller can send a first control instruction to indicate that the opening degree of the reflux valve is reduced; when the controller acquires that the first air pressure value acquired by the first pressure sensor is smaller than or equal to the preset air inlet air pressure value, the controller can send a second control instruction to indicate that the opening of the reflux valve is increased. Therefore, the air inlet pressure of the air inlet is convenient to regulate and control by controlling the opening of the reflux valve, manpower is saved, and efficiency is improved.
In some possible embodiments of the present application, the natural gas compressor train system further includes a driving machine, and a second pressure sensor, an output end of the driving machine is connected with the compressor and drives the compressor, the second pressure sensor is disposed at the exhaust port, and the second pressure sensor monitors a pressure of the exhaust port to control a rotation speed of the driving machine.
The pressure of the exhaust port is monitored through the second pressure sensor, and through the preset exhaust air pressure value preset in the design pressure range of the exhaust port, a worker can conveniently compare the reading displayed by the second pressure sensor with the preset exhaust air pressure value, and when the reading is larger than the preset exhaust air pressure value, the worker can reduce the rotating speed of the driving machine so as to reduce the exhaust pressure of the exhaust port; when the reading is less than or equal to the preset exhaust pressure value, the operator can increase the rotating speed of the driving machine to increase the exhaust pressure of the exhaust port.
In some possible embodiments of the present application, the controller has a third port and a fourth port, the second pressure sensor is electrically connected to the third port, the fourth port is electrically connected to the driver, the controller collects a second air pressure value obtained by the second pressure sensor, the second air pressure value is greater than the preset exhaust air pressure value, and sends a third control command to the driver, the third control command indicates that the rotation speed of the driver is decreased, the second air pressure value is less than or equal to the preset exhaust air pressure value, and sends a fourth control command to the driver, and the fourth control command indicates that the rotation speed of the driver is increased.
When the controller acquires that the second air pressure value acquired by the second pressure sensor is greater than the preset exhaust air pressure value, the controller can send a third control instruction to indicate that the rotating speed of the driving machine is reduced, so that the exhaust pressure of the exhaust port is reduced; when the controller acquires that the second air pressure value acquired by the first pressure sensor is smaller than or equal to the preset exhaust air pressure value, the controller can send a fourth control instruction to indicate that the rotating speed of the driving machine is increased, so that the exhaust pressure of the exhaust port is increased. Therefore, the exhaust pressure of the exhaust port is convenient to regulate and control by controlling the rotating speed of the driving machine, labor is saved, and efficiency is improved.
In some possible embodiments of the present application, the controller has a fifth port electrically connected to the drive machine, the first air pressure value is less than or equal to a preset intake air pressure value, a third control command is sent to the drive machine, the third control command indicates that the rotational speed of the drive machine is decreased, the first air pressure value is greater than the preset intake air pressure value, a fourth control command is sent to the drive machine, the fourth control command indicates that the rotational speed of the drive machine is increased.
When the controller acquires that the first air pressure value acquired by the first pressure sensor is greater than the preset air inlet pressure value, the controller can also send a fourth control instruction to indicate that the rotating speed of the driving machine is increased, so that the exhaust pressure of the air outlet is increased, and the air inlet pressure of the air inlet is reduced; when the controller acquires that the first air pressure value acquired by the first pressure sensor is smaller than or equal to the preset exhaust air pressure value, the controller may send a third control instruction to instruct the rotation speed of the driver to decrease, so that the exhaust pressure of the exhaust port is reduced, and the intake pressure of the intake port is increased. Therefore, the controller can regulate and control the air inlet pressure of the air inlet by controlling the opening of the reflux valve and can further realize the regulation and control of the air inlet pressure of the air inlet by controlling the rotating speed of the driving machine.
In some possible embodiments of the present disclosure, the controller has a sixth port, the sixth port is electrically connected to the reflux valve, the second air pressure value is smaller than or equal to the preset exhaust air pressure value, the controller sends a first control command to the reflux valve, the first control command indicates that the valve opening degree of the reflux valve is decreased, the second air pressure value is greater than the preset exhaust air pressure value, and sends a second control command to the reflux valve, the second control command indicates that the valve opening degree of the reflux valve is increased.
When the controller acquires that a second air pressure value acquired by the second pressure sensor is larger than a preset exhaust air pressure value, the controller can also send a second control instruction to indicate that the opening of the reflux valve is increased, so that the natural gas refluxed to the air inlet by the air outlet is increased, and the exhaust pressure of the air outlet is reduced; when the controller acquires that the second air pressure value acquired by the second pressure sensor is smaller than or equal to the preset exhaust air pressure value, the controller can also send a first control instruction to indicate that the opening of the reflux valve is reduced, so that the natural gas flowing back to the air inlet from the air outlet is reduced, and the exhaust pressure of the air outlet is increased. Therefore, the controller can regulate and control the exhaust pressure of the exhaust port by controlling the rotating speed of the driving machine and can also control the opening of the reflux valve so as to further realize the regulation and control of the exhaust pressure of the exhaust port.
In some possible embodiments of the present application, the pipeline includes a first pipeline, a second pipeline, and a third pipeline, the first pipeline is communicated with the gas inlet through a first flange, the second pipeline is communicated with the gas outlet through a second flange, the third pipeline is respectively communicated with the first pipeline and the second pipeline, and the backflow valve is communicated with and disposed on the third pipeline.
The gas inlet is communicated with the first pipeline, so that natural gas of an upstream pipeline can conveniently enter the gas inlet through the first pipeline, and the first pipeline is connected with the gas inlet through the first flange, so that the first pipeline is convenient to disassemble and assemble; the exhaust port is communicated with the second pipeline, so that pressurized natural gas can be conveniently discharged into a downstream pipeline through the second pipeline by the exhaust port, and the second pipeline is connected with the air inlet through the second flange, so that the second pipeline is convenient to disassemble and assemble; the backflow valve is arranged on the third pipeline, so that natural gas exhausted from the exhaust port can flow back to the air inlet through the second pipeline, the third pipeline and the first pipeline in sequence.
In some possible embodiments of the present application, an intake valve for controlling an intake air amount of the intake port is communicated with the first pipeline.
The first pipeline is communicated with the air inlet valve, so that the air inflow entering the compressor from the upstream pipeline can be controlled conveniently, and the first pipeline is communicated and cut off.
In some possible embodiments of the present application, the second duct is communicated with an exhaust valve for controlling the exhaust amount of the exhaust port.
The second pipeline is communicated with the exhaust valve, so that the exhaust quantity of the natural gas compressed by the compressor to the downstream pipeline can be controlled conveniently, and the second pipeline can be communicated and cut off.
Drawings
FIG. 1 is a schematic structural diagram of a natural gas compressor train system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a natural gas compressor train system including an intake valve and an exhaust valve according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a natural gas compressor train system including a return valve according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a natural gas compressor train system including a first pressure sensor according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a natural gas compressor train system including a second pressure sensor according to an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of a natural gas compressor train system including a controller according to an embodiment of the present disclosure;
FIG. 7 is a block diagram of a control system for regulating and controlling the opening of a return valve via a first pressure sensor according to an embodiment of the present disclosure;
FIG. 8 is a schematic structural diagram of a natural gas compressor train system according to an embodiment of the present disclosure, including a controller electrically connected to a second pressure sensor;
FIG. 9 is a block diagram of a control system for controlling the rotation speed of a driver via a second pressure sensor according to an embodiment of the present disclosure;
FIG. 10 is a schematic diagram of the overall structure of a natural gas compressor train system according to an embodiment of the present disclosure;
FIG. 11 is a block diagram of a control system for controlling the rotational speed of a driver via a first pressure sensor according to an embodiment of the present disclosure;
fig. 12 is a block diagram of a control system for regulating and controlling an opening degree of a return valve by a second pressure sensor according to an embodiment of the present application.
Reference numerals: 1. a compressor; 2. an air inlet; 3. an exhaust port; 4. a first conduit; 5. a second conduit; 6. a reflux valve; 7. a third pipeline; 8. a first pressure sensor; 9. a controller; 10. a driver; 11. a second pressure sensor; 12. an intake valve; 13. and (4) exhausting the valve.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Fig. 1 shows a schematic diagram of a natural gas compressor train system that can pressurize natural gas for delivery into a pipeline or natural gas pipeline network. As shown in fig. 1, the natural gas compressor train system includes a compressor 1 and a driver 10, the driver 10 being used to drive the compressor 1. The compressor 1 has an intake port 2 and an exhaust port 3, and the compressor 1 includes a cylinder, the intake port 2 communicating with an intake end of the cylinder, and the exhaust port 3 communicating with an exhaust end of the cylinder.
Moreover, the gas inlet 2 can be communicated with a first pipeline 4 through a first flange, and the first pipeline 4 is communicated with an upstream pipeline so as to input natural gas; the exhaust port 3 can be communicated with a second pipeline 5 through a second flange, and the second pipeline 5 is communicated with a downstream pipeline so as to discharge the pressurized natural gas. Therefore, the natural gas to be pressurized sequentially passes through the first pipeline 4, the air inlet 2 and the air inlet end of the cylinder, the driving machine 10 drives the cylinder through the crankshaft to compress the natural gas entering the cylinder, and the pressurized natural gas is discharged sequentially passes through the air outlet end of the cylinder, the air outlet 3 and the second pipeline 5, so that the natural gas is pressurized.
In some embodiments, the drive machine 10 may be a gas engine or a diesel engine.
In other embodiments, the first pipeline 4 may be connected to a gas inlet separator for removing impurities from the natural gas entering the cylinder of the compressor 1.
Fig. 2 shows a schematic structural diagram of a natural gas compressor train system including an intake valve and an exhaust valve, and as shown in fig. 2, in order to facilitate control of the amount of intake air entering the compressor 1 from an upstream pipeline, an intake valve 12 is communicated with the first pipeline 4 to achieve communication and blocking of the first pipeline 4. When the compressor 1 is in operation, the gas inlet valve 12 is opened, so that natural gas enters the compressor 1 through the first pipeline 4; when the compressor 1 is stopped, the intake valve 12 is closed to block the first pipe 4, and the supply of natural gas to the compressor 1 is stopped.
In some embodiments, intake valve 12 may be an electrically operated valve or a pneumatically operated valve.
With continued reference to fig. 2, in order to facilitate the control of the displacement of the natural gas compressed by the compressor 1 to the downstream pipeline, the second pipeline 5 is communicated with a discharge valve 13 to achieve the communication and the interception of the second pipeline 5.
In other embodiments, the exhaust valve 13 may be the same structure as the intake valve 12, and may be an electric valve or a pneumatic valve.
In addition, the compressor 1 is influenced by the operation number of the gas wells at the upstream, the fluctuation of the gas production rate of a single well, the regulation and control state of a pipe network and the like, so that the air inlet pressure of the air inlet 2 of the natural gas compressor unit can fluctuate frequently. If the inlet pressure exceeds the designed pressure range of the compressor 1, the compressor 1 is shut down, the power is over-increased, and even the compressor 1 is damaged.
At present, whether the air inlet pressure of the air inlet 2 of the compressor 1 exceeds a designed pressure range can be judged by workers on site, and then the pressure of the air inlet 2 of the compressor 1 is regulated to stabilize the air inlet pressure of the air inlet 2. However, the field worker determines whether the intake pressure of the air inlet 2 exceeds the designed pressure range, which is often inaccurate and not beneficial to the pressure regulation of the air inlet 2.
In addition, in order to realize the pressure regulation of the air inlet 2 of the compressor 1, a construction unit can prepare and install the natural gas pressure regulating pry at the air inlet 2 of the compressor 1, the natural gas pressure regulating pry comprises a regulating manifold, a control valve, a regulating valve, a safety emptying valve and the like, and the pressure regulation of the air inlet 2 of the natural gas compressor set is completed through the matching of various instruments and various valves in the pressure regulating process.
However, the natural gas pressure regulating sledge occupies a large area, and the pressure regulation of the air inlet 2 of the compressor 1 can be realized only by matching of various instruments and valves, so that the pressure regulating function is complex, and the maintenance cost is high. In order to reduce the pressure-stabilizing device installed at the air inlet 2 of the compressor 1, thereby facilitating the pressure regulation of the air inlet 2 of the compressor 1, fig. 3 shows a schematic structure diagram of the natural gas compressor train system including a return valve, and as shown in fig. 3, the natural gas compressor train system provided in the present application further includes a return valve 6.
In order to realize the natural gas backflow from the exhaust port 3 of the compressor 1 to the inlet port 2, the first pipeline 4 is communicated with the second pipeline 5 through a third pipeline 7, and a backflow valve 6 is communicated and arranged on the third pipeline 7. When the air inlet pressure of the air inlet 2 is overlarge, the opening degree of the reflux valve 6 is reduced, so that the natural gas refluxed from the air outlet 3 is reduced, the air inlet pressure of the air inlet 2 is reduced, and the problems of shutdown, damage and the like of the compressor 1 are effectively avoided; when the air inlet pressure of the air inlet 2 is too small, the opening degree of the reflux valve 6 is increased, so that the natural gas refluxed from the air outlet 3 is increased, the air inlet pressure of the air inlet 2 is adjusted, and the continuous pressurization of the natural gas is guaranteed. Therefore, on the basis of reducing the pressure stabilizing equipment of the air inlet 2, the purpose of regulating the pressure of the air inlet 2 is achieved.
In addition, in order to facilitate monitoring of the intake pressure of the air inlet 2 by a person, fig. 4 shows a schematic structural diagram including a first pressure sensor in the natural gas compressor train system, and as shown in fig. 4, the natural gas compressor train system further includes a first pressure sensor 8, and the first pressure sensor 8 may be installed at the air inlet 2 and monitor and display the pressure of the air inlet 2.
In some embodiments, a preset intake air pressure value is set for the intake air pressure of the intake port 2, which is within the intake air pressure design pressure range of the intake port 2. The first pressure sensor 8 may be a barometer displaying pressure readings, the pressure readings monitored and displayed by the first pressure sensor 8 are first air pressure values, and the staff compares the first air pressure values with preset intake air pressure values. When the first air pressure value is larger than the preset inlet air pressure value, the worker can reduce or completely close the valve opening of the return valve 6, so that the natural gas flowing back to the inlet 2 from the outlet 3 is reduced, and the inlet pressure of the inlet 2 is reduced.
In addition, when the first air pressure value is smaller than or equal to the preset intake air pressure value, the worker can increase or completely open the valve opening of the reflux valve 6, so that the natural gas flowing back to the air inlet 2 through the air outlet 3 is increased, the intake pressure of the air inlet 2 is increased, and the natural gas is pressurized by the compressor 1.
In other embodiments, the first pressure sensor 8 may also be electrically connected to an alarm for the purpose of alerting personnel.
In addition, the pressure of the exhaust port 3 fluctuates due to fluctuations in the downstream facility gas throughput and downstream gas usage, and therefore the pressure of the exhaust port 3 also needs to be adjusted. In the process of regulating the exhaust pressure of the exhaust port 3 of the compressor 1, compensation can be performed at present through a minimum pressure valve when the back pressure of the exhaust port 3 of the compressor 1 is insufficient. However, when the back pressure is high, the minimum pressure valve cannot play a role in pressure regulation, and only the natural gas at the exhaust port 3 can be emptied to reduce the back pressure of the exhaust port 3 of the compressor 1, so that the natural gas is wasted.
In order to facilitate monitoring of the exhaust pressure of the exhaust port 3 by a worker in the process of pressure regulation of the exhaust pressure of the exhaust port 3 and reduce waste after natural gas is exhausted, fig. 5 shows a schematic structural diagram of a natural gas compressor set system including a second pressure sensor, as shown in fig. 5, the natural gas compressor set system further includes a second pressure sensor 11, and the second pressure sensor 11 may be installed at the exhaust port 3 and monitors and displays the pressure of the exhaust port 3.
In some embodiments, a preset exhaust air pressure value is set for the exhaust air pressure of the exhaust port 3, and the preset exhaust air pressure value is within the design pressure range of the exhaust pressure of the exhaust port 3. The second pressure sensor 11 may be of the same construction as the first pressure sensor 8, and may be a barometer for displaying pressure readings. The air pressure reading monitored and displayed by the second pressure sensor 11 is a second air pressure value, and the staff compares the second air pressure value with a preset exhaust air pressure value. When the second air pressure value is greater than the preset exhaust air pressure value, the operator can reduce the rotation speed of the driving machine 10 to reduce the exhaust pressure of the exhaust port 3.
In addition, when the second air pressure value is less than or equal to the preset exhaust air pressure value, the operator may increase the rotation speed of the driving machine 10 to increase the exhaust pressure of the exhaust port 3.
In other embodiments, the second pressure sensor 11 may also be electrically connected to an alarm for the purpose of alerting the operator.
In order to facilitate the regulation and control of the intake pressure of the intake port 2 by controlling the opening degree of the return valve 6, so as to save manpower and improve efficiency, fig. 6 shows a schematic structural diagram including a controller in the natural gas compressor train system, as shown in fig. 6, the natural gas compressor train system further includes a controller 9, and the position of the controller 9 in this application may not be limited. The controller 9 has a first port to which the first pressure sensor 8 is electrically connected and a second port to which the return valve 6 is electrically connected.
Fig. 7 shows a block diagram of a control system for regulating the opening of the reflux valve through a first pressure sensor, and with reference to fig. 6 and 7, a preset intake air pressure value is set in the controller 9, a first port of the controller 9 collects a first air pressure value obtained by the first pressure sensor 8, and the first air pressure value is compared with the preset intake air pressure value to stabilize the intake air pressure of the intake port 2 by regulating the opening of the reflux valve 6 through a second port of the controller 9, where the specific control method S1-S3 is as follows:
s1: the first pressure sensor 8 acquires that the intake pressure of the intake port 2 is a first air pressure value;
s2: a first port of the controller 9 acquires a first air pressure value acquired by the first pressure sensor 8, and the controller 9 compares and analyzes a preset air inlet pressure value with the acquired first air pressure value;
s3: when the controller 9 acquires that the first air pressure value acquired by the first pressure sensor 8 is greater than the preset air inlet pressure value, the second port of the controller 9 may send a first control instruction to the reflux valve 6 to indicate that the valve opening of the reflux valve 6 is reduced, so that the natural gas refluxed to the air inlet 2 by the air outlet 3 is reduced, and the air inlet pressure of the air inlet 2 is reduced; when the controller 9 acquires that the first air pressure value acquired by the first pressure sensor 8 is smaller than or equal to the preset intake air pressure value, the second port of the controller 9 may send a second control instruction to the reflux valve 6 to indicate that the valve opening of the reflux valve 6 is increased, so as to increase the natural gas flowing back to the intake port 2 from the exhaust port 3, thereby increasing the intake pressure of the intake port 2.
In addition, in order to facilitate the regulation of the discharge pressure of the discharge port 3 by controlling the rotation speed of the driving machine 10, so as to save labor and improve efficiency, fig. 8 shows a schematic structural diagram of the natural gas compressor set system, which includes a controller electrically connected to a second pressure sensor, as shown in fig. 8, the controller 9 has a third port and a fourth port, the second pressure sensor 11 is electrically connected to the third port, and the fourth port is electrically connected to the driving machine 10.
Fig. 9 is a block diagram of a control system for regulating and controlling the rotation speed of the driving machine through a second pressure sensor, and with reference to fig. 8 and 9, a preset exhaust air pressure value is set in the controller 9, a third port of the controller 9 collects a second air pressure value obtained by the second pressure sensor 11, and the second air pressure value is compared with the preset exhaust air pressure value to regulate and control the rotation speed of the driving machine 10 through a fourth port of the controller 9 to stabilize the exhaust pressure of the exhaust port 3, where the specific control method S1-S3 is as follows:
s1: the second pressure sensor 11 acquires that the exhaust pressure of the exhaust port 3 is a second air pressure value;
s2: a third port of the controller 9 acquires a second air pressure value acquired by the second pressure sensor 11, and the controller 9 compares and analyzes a preset exhaust air pressure value with the acquired second air pressure value;
s3: when the controller 9 acquires that the second air pressure value acquired by the second pressure sensor 11 is greater than the preset exhaust air pressure value, the fourth port of the controller 9 may send a third control instruction to the driver 10 to instruct the driver 10 to reduce the rotation speed of the driver 10, so as to reduce the exhaust pressure of the exhaust port 3; when the second air pressure value acquired by the second pressure sensor 11 and acquired by the controller 9 is smaller than or equal to the preset exhaust air pressure value, the fourth port of the controller 9 may send a fourth control instruction to the driver 10 to instruct the driver 10 to increase the rotation speed, so as to increase the exhaust pressure of the exhaust port 3.
In addition, in order to regulate the intake pressure of the intake port 2 not only by controlling the opening degree of the reflux valve 6, but also by controlling the rotation speed of the driving machine 10, the intake pressure of the intake port 2 can be regulated and controlled, so that the regulation and control of the intake pressure of the intake port 2 can be further facilitated by the combined regulation of the opening degree of the reflux valve 6 and the rotation speed of the driving machine 10. Fig. 10 shows a schematic diagram of the overall structure of the natural gas compressor train system, and as shown in fig. 10, the controller 9 has a fifth port, and the fifth port is electrically connected with the driving machine 10.
Fig. 11 shows a block diagram of a control system for regulating and controlling the rotation speed of the driving machine by using the first pressure sensor, and with reference to fig. 10 and 11, the first port of the controller 9 acquires a first air pressure value acquired by the first pressure sensor 8, and the first air pressure value is compared with a preset intake air pressure value, so as to stabilize the intake air pressure of the intake port 2 by regulating and controlling the rotation speed of the driving machine 10 by using the fifth port of the controller 9, and the specific control method S1-S3 is as follows:
s1: the first pressure sensor 8 acquires that the intake pressure of the intake port 2 is a first air pressure value;
s2: a first port of the controller 9 acquires a first air pressure value acquired by the first pressure sensor 8, and the controller 9 compares and analyzes a preset air inlet pressure value with the acquired first air pressure value;
s3: when the controller 9 acquires that the first air pressure value acquired by the first pressure sensor 8 is greater than the preset intake air pressure value, the fifth port of the controller 9 may send a fourth control instruction to the return valve 6 to instruct the rotation speed of the driver 10 to increase, so that the exhaust pressure of the exhaust port 3 is increased, and the intake pressure of the intake port 2 is reduced; when the controller 9 acquires that the first air pressure value acquired by the first pressure sensor 8 is less than or equal to the preset intake air pressure value, the fifth port of the controller 9 may send a third control instruction to the return valve 6 to instruct the rotation speed of the driver 10 to decrease, so as to decrease the exhaust pressure of the exhaust port 3.
Furthermore, the exhaust pressure of the exhaust port 3 can be further regulated and controlled by jointly adjusting the opening degree of the return valve 6 and the rotation speed of the driving machine 10. Fig. 12 is a block diagram showing the structure of a control system for regulating the opening degree of the return valve by the second pressure sensor, and in conjunction with fig. 10 and 12, the controller 9 has a sixth port electrically connected to the return valve 6. A third port of the controller 9 acquires a second air pressure value acquired by the second pressure sensor 11, and the second air pressure value is compared with a preset exhaust air pressure value, so that the exhaust pressure of the exhaust port 3 is stabilized by regulating and controlling the opening of the return valve 6 through a sixth port of the controller 9, and the specific control method S1-S3 is as follows:
s1: the second pressure sensor 11 acquires that the exhaust pressure of the exhaust port 3 is a second air pressure value;
s2: a third port of the controller 9 acquires a second air pressure value acquired by the second pressure sensor 11, and the controller 9 compares and analyzes a preset exhaust air pressure value with the acquired second air pressure value;
s3: when the controller 9 acquires that the second air pressure value acquired by the second pressure sensor 11 is greater than the preset exhaust air pressure value, the sixth port of the controller 9 may send a second control instruction to the reflux valve 6 to indicate that the opening of the reflux valve 6 is increased, so that the natural gas refluxed to the air inlet 2 by the exhaust port 3 is increased, and the exhaust pressure of the exhaust port 3 is reduced; when the controller 9 acquires that the second air pressure value acquired by the second pressure sensor 11 is less than or equal to the preset exhaust air pressure value, the sixth port of the controller 9 may send a first control instruction to the reflux valve 6 to instruct the opening degree of the reflux valve 6 to decrease, so as to reduce the natural gas flowing back to the air inlet 2 from the exhaust port 3, and increase the exhaust pressure of the exhaust port 3.
The particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A natural gas compressor train system, comprising:
a compressor having an air inlet and an air outlet;
the return valve is communicated with the air outlet through a pipeline and is arranged on the pipeline;
a first pressure sensor disposed at the air inlet, the first pressure sensor monitoring a pressure of the air inlet; and
and the controller is respectively electrically connected with the first pressure sensor and the reflux valve, and controls the opening degree of the reflux valve according to the pressure of the air inlet monitored by the first pressure sensor.
2. The natural gas compressor set system of claim 1, wherein the controller has a first port and a second port, the first pressure sensor is electrically connected to the first port, the second port is electrically connected to the return valve, the controller collects a first air pressure value obtained by the first pressure sensor, the first air pressure value is greater than a preset intake air pressure value, and sends a first control instruction to the return valve, the first control instruction indicates that the valve opening of the return valve is decreased, the first air pressure value is less than or equal to the preset intake air pressure value, and sends a second control instruction to the return valve, and the second control instruction indicates that the valve opening of the return valve is increased.
3. The natural gas compressor train system of claim 2, further comprising:
the output end of the driving machine is connected with the compressor and drives the compressor; and
and the second pressure sensor is arranged at the exhaust port and used for monitoring the pressure of the exhaust port so as to control the rotating speed of the driving machine.
4. The natural gas compressor train system of claim 3, wherein the controller has a third port and a fourth port, the second pressure sensor is electrically connected to the third port, the fourth port is electrically connected to the drive machine, the controller collects a second air pressure value obtained by the second pressure sensor, the second air pressure value is greater than a preset exhaust air pressure value, and sends a third control command to the drive machine, the third control command indicates that the rotation speed of the drive machine is decreased, the second air pressure value is less than or equal to the preset exhaust air pressure value, and sends a fourth control command to the drive machine, and the fourth control command indicates that the rotation speed of the drive machine is increased.
5. The natural gas compressor train system of claim 4, wherein the controller has a fifth port electrically connected with the drive machine, the first air pressure value is less than or equal to the preset intake air pressure value, the controller sends the third control command to the drive machine, the third control command indicates a decrease in rotational speed of the drive machine, the first air pressure value is greater than the preset intake air pressure value, the controller sends the fourth control command to the drive machine, the fourth control command indicates an increase in rotational speed of the drive machine.
6. The natural gas compressor train system of claim 5, wherein the controller has a sixth port electrically connected to the return valve, wherein the second air pressure value is less than or equal to the preset discharge air pressure value, wherein the controller sends the first control command to the return valve, wherein the first control command indicates a decrease in the valve opening of the return valve, wherein the second air pressure value is greater than the preset discharge air pressure value, wherein the controller sends the second control command to the return valve, wherein the second control command indicates an increase in the valve opening of the return valve.
7. The natural gas compressor train system of claim 1, wherein the conduit comprises:
the first pipeline is communicated with the air inlet through a first flange;
the second pipeline is communicated with the exhaust port through a second flange; and
and the third pipeline is communicated with the first pipeline and the second pipeline respectively, and the reflux valve is communicated and arranged on the third pipeline.
8. The natural gas compressor train system of claim 7, wherein an intake valve that controls an intake air amount of the intake port is communicated to the first pipeline.
9. The natural gas compressor train system of claim 7, wherein the second conduit is connected to a vent valve for controlling the discharge amount of the vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220316572.0U CN216842123U (en) | 2022-02-16 | 2022-02-16 | Natural gas compressor set system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220316572.0U CN216842123U (en) | 2022-02-16 | 2022-02-16 | Natural gas compressor set system |
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| Publication Number | Publication Date |
|---|---|
| CN216842123U true CN216842123U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220316572.0U Active CN216842123U (en) | 2022-02-16 | 2022-02-16 | Natural gas compressor set system |
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| Country | Link |
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| CN (1) | CN216842123U (en) |
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2022
- 2022-02-16 CN CN202220316572.0U patent/CN216842123U/en active Active
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