Pressure regulator capable of remotely regulating pressure

Abstract

The utility model discloses a voltage regulator capable of regulating voltage remotely. The voltage regulator comprises a voltage regulating assembly; a pressure regulating valve; the control device comprises a programmable controller, a DO output module, an AI acquisition module, a power supply conversion module and a 4G module, the DO output module, the 4G module, the AI acquisition module and the power supply conversion module are respectively connected with the programmable controller, and the DO output module is connected with the stepping motor; the signal transmission end of the pressure transmitter is connected with the AI acquisition module, and the pressure detection end of the pressure transmitter is communicated with the outlet of the pressure regulating valve. According to the utility model, the pressure regulating precision is improved, the labor cost is saved, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage regulators, in particular to a voltage regulator for remote voltage regulation. Background Art

[0002] With the continuous improvement of the degree of automation in the gas industry, many gas companies have proposed the concept of unmanned stations and are conducting pilot projects. However, for the pressure regulators, the main equipment in the stations, conventional self-operated pressure regulators are still used, relying on manual on-site adjustment of the outlet pressure setting value of the pressure regulator, resulting in low pressure regulation efficiency of the pressure regulator and high labor costs.

[0003] Therefore, a remote voltage regulator is developed to solve the above problems. Utility Model Content

[0004] The utility model provides a remote voltage regulator to solve the problems of low pressure control efficiency and high labor cost of existing voltage regulators.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A remote voltage regulator, comprising:

[0007] A pressure regulating assembly, the pressure regulating assembly comprising a pressure stabilizer, a commander, a pressure regulating spring, a lead screw, a lead screw nut and a stepping motor, the first inlet of the pressure stabilizer being connected to the upper membrane cavity of the commander, the outlet of the pressure stabilizer being connected to the inlet of the commander, the output shaft of the stepping motor being connected to the lead screw, the lead screw nut being threadedly connected to the lead screw, one end of the pressure regulating spring being connected to the valve core of the commander, and the other end of the pressure regulating spring being connected to the lead screw nut;

[0008] a pressure regulating valve, wherein the inlet of the pressure regulating valve is communicated with the second inlet of the pressure regulator, the outlet of the pressure regulating valve is communicated with the upper membrane cavity of the pilot, the upper membrane cover cavity of the pressure regulating valve is communicated with the outlet of the pilot, and the lower membrane cover cavity of the pressure regulating valve is communicated with the outlet of the pressure regulating valve;

[0009] A control device, comprising a programmable controller, a DO output module, an AI acquisition module, a power conversion module, and a 4G module, wherein the DO output module, the 4G module, the AI acquisition module, and the power conversion module are respectively connected to the programmable controller, and the DO output module is connected to the stepping motor;

[0010] A pressure transmitter, wherein the signal transmission end of the pressure transmitter is connected to the AI acquisition module, and the pressure detection end of the pressure transmitter is connected to the outlet of the pressure regulating valve.

[0011] Furthermore, the control device also includes an explosion-proof box, and the programmable controller, DO output module, AI acquisition module, power conversion module and 4G module are integrated inside the explosion-proof box.

[0012] Furthermore, the voltage regulating assembly also includes a connecting shell, the stepping motor and the voltage regulating spring are arranged inside the connecting shell, the connecting shell is connected to the commander, and one side of the explosion-proof box is connected to one side of the connecting shell.

[0013] Specifically, the pressure regulating valve includes a valve body, a diaphragm component, a valve cylinder, a valve port and a main valve spring, the valve cylinder and the valve port are arranged in the valve body, one end of the valve cylinder is connected to the valve body through the main valve spring, the other end of the valve cylinder is connected to the diaphragm component, and the other end of the valve cylinder corresponds to the position of the valve port, the valve body includes an upper diaphragm cover and a lower diaphragm cover, the inlet of the pressure regulating valve is arranged on the upper diaphragm cover, the outlet of the pressure regulating valve is arranged on the lower diaphragm cover, the upper diaphragm cover is connected to the lower diaphragm cover, the diaphragm component is arranged between the upper diaphragm cover and the lower diaphragm cover, the upper diaphragm cover cavity is located between the inner wall of the upper diaphragm cover and the diaphragm component, and the lower diaphragm cover cavity is located between the inner wall of the lower diaphragm cover and the diaphragm component.

[0014] Furthermore, the control device also includes a small circuit breaker and a wiring terminal, the small circuit breaker is connected to the power conversion module, and the wiring terminal is respectively connected to the power conversion module, the controller, the AI acquisition module, the 4G module and the DO output module.

[0015] Specifically, the pressure-regulating spring includes a spring body, an upper spring seat and a lower spring seat. The upper end of the spring body is connected to the upper spring seat, and the lower end of the spring body is connected to the lower spring seat. The upper spring seat is connected to the valve core of the controller, and the lower spring seat is connected to the screw nut.

[0016] Specifically, the inlet of the pressure regulating valve is connected to the second inlet of the pressure regulator through a first pipe, the outlet of the pressure regulating valve is connected to the upper membrane cavity of the controller through a second pipe, the upper membrane cover cavity of the pressure regulating valve is connected to the outlet of the controller through a third pipe, and the lower membrane cover cavity of the pressure regulating valve is connected to the outlet of the pressure regulating valve through a fourth pipe.

[0017] The beneficial effects of the present invention are:

[0018] The remote pressure regulator proposed in this utility model can meet the needs of remote pressure regulation. It remotely regulates pressure by controlling the compression of the pressure regulating spring of the controller. The pressure value at the outlet of the pressure regulating valve is corrected by the controller, so that the pressure regulating accuracy of the pressure regulating valve is very high. This utility model has a wide range of applications, high pressure regulation accuracy, and saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a voltage regulator for remote voltage regulation in an embodiment of the present application;

[0020] Figure 2 Schematic diagram of the structure of the control device in the embodiment of the present application.

[0021] In the figure: 1-pressure regulator; 2-controller; 3-spring body; 31-upper spring seat; 32-lower spring seat; 4-screw; 5-screw nut; 6-stepping motor; 61-upper diaphragm cover; 62-lower diaphragm cover; 63-diaphragm component; 64-valve cylinder; 65-main valve spring; 7-control device; 71-programmable controller; 72-AI acquisition module; 73-power conversion module; 74-4G module; 75-miniature circuit breaker; 76-terminal block; 8-pressure transmitter; 9-connection housing; 10-outlet flange. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0025] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0026] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0027] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings.

[0029] Combine Figure 1 and Figure 2 As shown, a remote voltage regulator includes:

[0030] A pressure regulating assembly, comprising a pressure stabilizer 1, a commander 2, a pressure regulating spring 3, a lead screw 4, a lead screw nut 5 and a stepping motor 6, wherein the first inlet of the pressure stabilizer 1 is connected to the upper membrane cavity of the commander 2, the outlet of the pressure stabilizer 1 is connected to the inlet of the commander 2, the output shaft of the stepping motor 6 is connected to the lead screw 4, the lead screw nut 5 is threadedly connected to the lead screw 4, one end of the pressure regulating spring 3 is connected to the valve core of the commander 2, and the other end of the pressure regulating spring 3 is connected to the lead screw nut 5;

[0031] a pressure regulating valve, wherein the inlet of the pressure regulating valve is communicated with the second inlet of the pressure regulator 1, the outlet of the pressure regulating valve is communicated with the upper membrane cavity of the controller 2, the upper membrane cover cavity of the pressure regulating valve is communicated with the outlet of the controller 2, and the lower membrane cover cavity of the pressure regulating valve is communicated with the outlet of the pressure regulating valve;

[0032] A control device 7, comprising a programmable controller 71, a DO output module, an AI acquisition module 72, a power conversion module 73, and a 4G module 74. The DO output module, the 4G module 74, the AI acquisition module 72, and the power conversion module 73 are respectively connected to the programmable controller 71, and the DO output module is connected to the stepping motor 6.

[0033] The pressure transmitter 8 has a signal transmission end connected to the AI acquisition module 72 , and a pressure detection end of the pressure transmitter 8 is connected to the outlet of the pressure regulating valve.

[0034] like Figure 2As shown, in some embodiments, the control device 7 further includes an explosion-proof box, and the programmable controller 71, DO output module, AI acquisition module 72, power conversion module 73 and 4G module 74 are integrated inside the explosion-proof box.

[0035] like Figure 1 As shown, in some embodiments, the voltage regulating assembly further includes a connecting shell 9, the stepping motor 6 and the voltage regulating spring 3 are arranged inside the connecting shell 9, the connecting shell 9 is connected to the commander 2, and one side of the explosion-proof box is connected to one side of the connecting shell 9.

[0036] like Figure 1 As shown, in some embodiments, the pressure regulating valve includes a valve body, a diaphragm component 63, a valve cylinder 64 and a main valve spring 65, the valve cylinder 64 and the valve port are arranged in the valve body, one end of the valve cylinder 64 is connected to the valve body through the main valve spring 65, the other end of the valve cylinder 64 is connected to the diaphragm component 63, and the other end of the valve cylinder 64 corresponds to the position of the valve port, the valve body includes an upper diaphragm cover 61 and a lower diaphragm cover 62, the inlet of the pressure regulating valve is arranged on the upper diaphragm cover 61, and the outlet of the pressure regulating valve is arranged on the lower diaphragm cover 62, the upper diaphragm cover 61 is connected to the lower diaphragm cover 62, the diaphragm component 63 is arranged between the upper diaphragm cover 61 and the lower diaphragm cover 62, the upper diaphragm cover cavity is located between the inner wall of the upper diaphragm cover 61 and the diaphragm component 63, and the lower diaphragm cover cavity is located between the inner wall of the lower diaphragm cover 62 and the diaphragm component 63.

[0037] like Figure 2 As shown, in some embodiments, the control device 7 further includes a miniature circuit breaker 75 and a wiring terminal 76, the miniature circuit breaker 75 is connected to the power conversion module 73, and the wiring terminal 76 is respectively connected to the power conversion module 73, the programmable controller 71, the AI acquisition module 72, the 4G module 74 and the DO output module.

[0038] like Figure 1 As shown, in some embodiments, the pressure-regulating spring includes a spring body 3, an upper spring seat 31 and a lower spring seat 32, the upper end of the spring body is connected to the upper spring seat 31, the lower end of the spring body is connected to the lower spring seat 32, the upper spring seat 31 is connected to the valve core of the commander 2, and the lower spring seat 32 is connected to the screw nut 5.

[0039] like Figure 1As shown, in some embodiments, the inlet of the pressure regulating valve is connected to the second inlet of the pressure regulator 1 through a first pipe, the outlet of the pressure regulating valve is connected to the upper membrane cavity of the commander 2 through a second pipe, the upper membrane cover cavity of the pressure regulating valve is connected to the outlet of the commander 2 through a third pipe, and the lower membrane cover cavity of the pressure regulating valve is connected to the outlet of the pressure regulating valve through a fourth pipe.

[0040] The model of the programmable controller is: S7-200SMARTCPUST20; the model of the power conversion module is: DR-60-24; the model of the AI acquisition module is: AE08; and the model of the 4G module is USR-DR154.

[0041] The working principle of this utility model is as follows:

[0042] like Figure 1 As shown, pressure regulator 1 regulates inlet pressure P1 to damping pressure P4. Damping pressure P4 is a variable value, estimated to be outlet pressure P2 plus 0.2 MPa. Damping pressure P4 is reduced to loading pressure P3 by pilot 2. The magnitude of loading pressure P3 is controlled by the pressure-regulating spring and outlet pressure P2. During normal operation, outlet pressure P2 is equal to the set value set by the pressure-regulating spring. When outlet pressure P2 increases, pilot 2's valve opening decreases, reducing pressure P3. The pressure in the upper diaphragm cap chamber of the pressure regulator becomes greater than that in the lower diaphragm cap chamber. Diaphragm element 63 moves rightward, driving valve cylinder 64 rightward, closing the valve opening and reducing outlet pressure P2. Conversely, when outlet pressure P2 decreases, pilot 2's valve opening increases, increasing pressure P3. The pressure in the upper diaphragm cap chamber of the pressure regulator becomes less than that in the lower diaphragm cap chamber. Diaphragm element 63 moves leftward, driving valve cylinder 64 leftward, increasing the valve opening and increasing outlet pressure P2 until it reaches the set pressure. The set pressure is set by adjusting the compression of the pressure regulating spring.

[0043] like Figure 2 As shown, the control box is an explosion-proof box with a programmable controller 71 installed inside. The programmable controller 71 integrates a power conversion module 73, a 4G module 74, a DO output module, and an AI acquisition module 72. The remote platform sends the required outlet pressure value to the programmable controller 71. The programmable controller 71 calculates the DO output and controls the stepper motor 6 to rotate. This output drives the screw, which in turn moves the nut up and down, controlling the compression of the spring. The pressure transmitter 8 collects the pressure regulating valve outlet pressure and feeds it back to the controller. The programmable controller 71 detects whether the actual outlet pressure value and the set outlet pressure value are within the accuracy range. If so, it continues to control the stepper motor 6 to make corrections. If within the accuracy range, the collected outlet pressure value is uploaded to the platform.

[0044] This utility model primarily remotely regulates pressure by remotely setting and controlling the rotation of a stepper motor 6, thereby controlling the compression of a pressure regulating spring in a controller 2. By collecting the outlet pressure value and performing outlet pressure correction, the pressure regulating accuracy of the pressure regulating valve is achieved to a very high degree. Therefore, the type of pressure regulating valve is not limited to axial flow pressure regulating valves; the remote pressure regulating structure can also be applied to other indirect acting pressure regulating valves, thus achieving a wide range of applications and high precision.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A remote voltage regulator, characterized in that: include: A pressure regulating assembly, the pressure regulating assembly comprising a pressure stabilizer, a commander, a pressure regulating spring, a lead screw, a lead screw nut and a stepping motor, the first inlet of the pressure stabilizer being connected to the upper membrane cavity of the commander, the outlet of the pressure stabilizer being connected to the inlet of the commander, the output shaft of the stepping motor being connected to the lead screw, the lead screw nut being threadedly connected to the lead screw, one end of the pressure regulating spring being connected to the valve core of the commander, and the other end of the pressure regulating spring being connected to the lead screw nut; a pressure regulating valve, wherein the inlet of the pressure regulating valve is communicated with the second inlet of the pressure regulator, the outlet of the pressure regulating valve is communicated with the upper membrane cavity of the pilot, the upper membrane cover cavity of the pressure regulating valve is communicated with the outlet of the pilot, and the lower membrane cover cavity of the pressure regulating valve is communicated with the outlet of the pressure regulating valve; A control device, comprising a programmable controller, a DO output module, an AI acquisition module, a power conversion module, and a 4G module, wherein the DO output module, the 4G module, the AI acquisition module, and the power conversion module are respectively connected to the programmable controller, and the DO output module is connected to the stepping motor; A pressure transmitter, wherein the signal transmission end of the pressure transmitter is connected to the AI acquisition module, and the pressure detection end of the pressure transmitter is connected to the outlet of the pressure regulating valve.

2. A remote voltage regulator according to claim 1, characterized in that: The control device also includes an explosion-proof box, and the programmable controller, DO output module, AI acquisition module, power conversion module and 4G module are integrated inside the explosion-proof box.

3. A remote voltage regulator according to claim 2, characterized in that: The voltage regulating assembly further includes a connecting shell, the stepping motor and the voltage regulating spring are arranged inside the connecting shell, the connecting shell is connected to the commander, and one side of the explosion-proof box is connected to one side of the connecting shell.

4. The remote voltage regulator according to claim 1, characterized in that: The pressure regulating valve includes a valve body, a diaphragm component, a valve cylinder, a valve port and a main valve spring, the valve cylinder and the valve port are arranged in the valve body, one end of the valve cylinder is connected to the valve body through the main valve spring, the other end of the valve cylinder is connected to the diaphragm component, and the other end of the valve cylinder corresponds to the position of the valve port, the valve body includes an upper diaphragm cover and a lower diaphragm cover, the inlet of the pressure regulating valve is arranged on the upper diaphragm cover, the outlet of the pressure regulating valve is arranged on the lower diaphragm cover, the upper diaphragm cover is connected to the lower diaphragm cover, the diaphragm component is arranged between the upper diaphragm cover and the lower diaphragm cover, the upper diaphragm cover cavity is located between the inner wall of the upper diaphragm cover and the diaphragm component, and the lower diaphragm cover cavity is located between the inner wall of the lower diaphragm cover and the diaphragm component.

5. The remote voltage regulator according to claim 1, characterized in that: The control device also includes a small circuit breaker and a wiring terminal. The small circuit breaker is connected to the power conversion module, and the wiring terminal is respectively connected to the power conversion module, the controller, the AI acquisition module, the 4G module and the DO output module.

6. The remote voltage regulator according to claim 1, characterized in that: The pressure-regulating spring includes a spring body, an upper spring seat and a lower spring seat. The upper end of the spring body is connected to the upper spring seat, and the lower end of the spring body is connected to the lower spring seat. The upper spring seat is connected to the valve core of the controller, and the lower spring seat is connected to the screw nut.

7. The remote voltage regulator according to claim 1, characterized in that: The inlet of the pressure regulating valve is connected to the second inlet of the pressure stabilizer through a first pipe, the outlet of the pressure regulating valve is connected to the upper membrane cavity of the controller through a second pipe, the upper membrane cover cavity of the pressure regulating valve is connected to the outlet of the controller through a third pipe, and the lower membrane cover cavity of the pressure regulating valve is connected to the outlet of the pressure regulating valve through a fourth pipe.

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