Proportional control valve for pressurization system

Abstract

The invention discloses a proportional control valve for a pressurization system, and relates to the technical field of pressurization, when in use, the proportional control valve for the pressurization system comprises a pneumatic drive booster pump and an air source assembly, and one end of the pneumatic drive booster pump is connected with a proportional control valve body through a pipeline. When the proportional control valve for the pressurization system is used, output air pressure can be monitored in real time through the pressure sensor and the pressure gauge, the monitored air pressure is transmitted to a control system of an upper computer, and the opening and closing degree of the proportional control valve body can be calculated by adopting a corresponding formula according to a preset pressurization proportion; and then the control system controls the proportional control valve body to be opened and closed, so that the function of automatic and accurate control and adjustment can be achieved, the pressurizing precision and stability are improved, meanwhile, the pressurizing system can adapt to different working conditions and requirements, and the efficiency and reliability of the pressurizing system are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of boosting, and in particular to a proportional control valve for a boosting system. Background Art

[0002] In some applications, in order to meet production needs, it is necessary to pressurize the fluid or gas to meet specific working requirements. Therefore, a booster pump and a control valve are used to control the fluid or gas.

[0003] When using existing boosting methods, for the sake of convenience, most of them are controlled manually. Therefore, there may be problems such as inaccurate control, excessive initial boost, low efficiency or poor adaptability, making it impossible to accurately meet working requirements. Summary of the invention

[0004] The object of the present invention is to provide a proportional control valve for a boosting system, so as to solve the problem that the boosting control valve currently used cannot achieve precise control as mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a proportional control valve for a boosting system, comprising: a pneumatically driven boosting pump and an air source assembly, one end of the pneumatically driven boosting pump is connected to a proportional control valve body through a pipeline, one end of the proportional control valve body away from the pneumatically driven boosting pump is connected to a boosting control solenoid valve through a pipeline, and the air source assembly is connected to one end of the boosting control solenoid valve through a pipeline;

[0006] One end of the air pressure driven booster pump away from the proportional control valve body is connected to a filter through a pipeline, one side of the air pressure driven booster pump is connected to a pressure sensor and a pressure gauge, and the side of the pressure sensor away from the air pressure driven booster pump is connected to a host computer.

[0007] Preferably, a one-way flow structure is formed between the air pressure driven booster pump and the proportional control valve body.

[0008] Preferably, the other end of the host computer is connected to the proportional control valve body through a wire.

[0009] Preferably, the pressure sensor is sealedly connected to the air pressure driven booster pump.

[0010] Compared with the prior art, the beneficial effects of the present invention are: when the proportional control valve for the boosting system is in use, the output air pressure can be monitored in real time through the pressure sensor and the pressure gauge, and the monitored air pressure can be transmitted to the control system of the host computer. The opening and closing size of the proportional control valve body can be calculated by the corresponding formula through the preset boosting ratio, and then the control system controls the proportional control valve body to open and close, thereby realizing the function of automatic and precise control and adjustment, improving the accuracy and stability of the boosting, and being able to adapt to different working conditions and requirements, and also improving the efficiency and reliability of the boosting system. This is the use feature of the proportional control valve for the boosting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the principle framework structure of the pressurization method of the present invention;

[0012] Figure 2 It is a schematic diagram of the structure of the process of the pressurization method of the present invention;

[0013] Figure 3 It is a schematic diagram of the connection structure of the proportional control valve body of the present invention.

[0014] In the figure: 1. Air pressure driven booster pump; 2. Proportional control valve body; 3. Boost control solenoid valve; 4. Air source assembly; 5. Filter; 6. Pressure sensor; 7. Pressure gauge; 8. Host computer. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 2 The present invention provides a technical solution: a proportional control valve for a boosting system, comprising: an air pressure driven boosting pump 1 and an air source assembly 4, one end of the air pressure driven boosting pump 1 is connected to a proportional control valve body 2 through a pipeline, one end of the proportional control valve body 2 away from the air pressure driven boosting pump 1 is connected to a boosting control solenoid valve 3 through a pipeline, and the air source assembly 4 is connected to one end of the boosting control solenoid valve 3 through a pipeline;

[0017] One end of the air pressure driven booster pump 1 away from the proportional control valve body 2 is connected to a filter 5 through a pipeline, one side of the air pressure driven booster pump 1 is connected to a pressure sensor 6 and a barometer 7, the side of the pressure sensor 6 away from the air pressure driven booster pump 1 is connected to a host computer 8, a one-way flow structure is formed between the air pressure driven booster pump 1 and the proportional control valve body 2, the other end of the host computer 8 is connected to the proportional control valve body 2 through a wire, the pressure sensor 6 and the air pressure driven booster pump 1 are sealed, the pressure sensor 6 is used to monitor the output pressure signal, the proportional control valve body 2 is used to adjust the boost ratio according to the feedback signal of the pressure sensor 6, the host computer 8 is used to receive the signal of the pressure sensor 6, and control the opening and closing size of the proportional control valve body 2 according to the set boost ratio through the control system.

[0018] In specific implementation, the boosting system uses a proportional control valve. Before starting the boosting, you need to manually input the set pressure, gain ratio and other parameters in the upper computer 8 interface. The gain ratio is generally 0.8, and then click the "Start Boosting" button. After that, the upper computer 8 sends the pressure parameters to the PLC, and the PLC starts to calculate related parameters, such as the input gas pressure of the air pressure-driven boosting pump 1, the opening of the proportional control valve body 2, and the analog quantity required by the proportional control valve body 2. Then, it controls the analog output module to output the analog quantity to the proportional control valve body 2. After receiving the analog quantity, the proportional control valve body 2 starts to respond to the output and outputs the air pressure corresponding to the analog quantity. Output air pressure P 气 Calculation formula:

[0019]

[0020] After receiving the air pressure output from the proportional control valve body 2, the air pressure driven booster pump 1 starts to increase the pressure. The theoretical boost value P 增 Calculation formula:

[0021] P 增 =Pressure ratio × P 气

[0022] Afterwards, the PLC will gradually increase the output analog value 4-20mA according to the pressure value fed back by the sensor. The collection frequency of the feedback pressure value is fast at first and then slow; the single increase value of the analog value is large at first and then small, until the deviation between the feedback pressure value and the set value is within 0.005. When the boost process is completed, the output value of the PLC's analog output expansion module is set to 4mA to prevent abnormal vibration of the proportional control valve body 2 when the analog value output is 0mA.

[0023] See also Figure 1-Figure 3It can be seen that when in use, the pressure sensor 6 monitors the output pressure signal in real time, and sends the detected air pressure-driven boost pump 1 output signal to the control system of the upper computer 8. The control system calculates the required opening of the proportional control valve body 2 according to the preset boost ratio, and sends a control signal to the proportional control valve body 2. The proportional control valve body 2 adjusts the opening according to the received signal to achieve precise control of the boost process.

[0024] To sum up: when the proportional control valve for the boosting system is in use, the air pressure-driven boosting pump 1, the proportional control valve body 2, the boosting control solenoid valve 3 and the air source assembly 4 are connected through pipelines. When gas boosting is required, the set pressure and other parameters can be input, and then the boosting can be started. The PLC calculates the relevant parameters and controls the proportional control valve body 2 to open at the same time, thereby realizing the function of automatic and precise control and adjustment, and improving the accuracy and stability of the boosting. This is the use feature of the proportional control valve for the boosting system. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A proportional control valve for a boosting system, comprising: A pneumatically driven booster pump (1) and an air source assembly (4), characterized in that: one end of the pneumatically driven booster pump (1) is connected to a proportional control valve body (2) via a pipeline, one end of the proportional control valve body (2) away from the pneumatically driven booster pump (1) is connected to a boost control solenoid valve (3) via a pipeline, and the air source assembly (4) is connected to one end of the boost control solenoid valve (3) via a pipeline; One end of the air pressure driven booster pump (1) away from the proportional control valve body (2) is connected to a filter (5) via a pipeline, one side of the air pressure driven booster pump (1) is connected to a pressure sensor (6) and a pressure gauge (7), and the side of the pressure sensor (6) away from the air pressure driven booster pump (1) is connected to a host computer (8).

2. A proportional control valve for a boosting system according to claim 1, characterized in that: A one-way flow structure is formed between the air pressure driven booster pump (1) and the proportional control valve body (2).

3. The proportional control valve for a boosting system according to claim 1, characterized in that: The other end of the upper computer (8) is connected to the proportional control valve body (2) via a wire.

4. The proportional control valve for a boosting system according to claim 1, characterized in that: The pressure sensor (6) is sealedly connected to the air pressure driven booster pump (1).

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