Pressure stabilizing device for pneumatic valve

Abstract

The utility model provides a pneumatic valve pressure stabilizing device. The pneumatic valve pressure stabilizing device comprises a compressed air main pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an air inlet check valve, a normally-open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The air inlet check valve is connected to the pressure stabilizing air inlet pipe; the normally open electromagnetic valve is connected to the pressure stabilizing air outlet pipe; the mother pipe check valve and the pressure transmitter are connected to the compressed air mother pipe; the control unit is used for receiving pressure signals of the pressure transmitter and controlling opening and closing of the normally-open type electromagnetic valve. According to the utility model, the normally open solenoid valve can be controlled to be opened through the control unit, and the compressed air mother pipe is supplied with air through high-pressure air stored in the surge tank; and under the condition of sudden power loss, the normally-open electromagnetic valve is automatically opened, and the compressed air mother pipe can be supplemented with air through the high-pressure air stored in the pressure stabilizing tank, so that the air supplementing requirement of the pneumatic valve executing mechanism is met. The device disclosed by the utility model has lower equipment investment and operation cost.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic valve technology, and more specifically, it relates to a pneumatic valve pressure stabilizing device. Background Technology

[0002] Pneumatic valves are valves that use high-pressure gas as a power source and can be opened or closed quickly. They are widely used in many fields such as municipal engineering, energy, metallurgy, and chemical industry.

[0003] The operating air pressure of pneumatic valve actuators is within a certain range. When the air pressure drops below the minimum value, the valve's operating time will be prolonged, or it may even fail to operate normally. High-pressure gas is transported through pipelines at high velocity, resulting in significant pressure loss. In the event of abnormal operating conditions, such as a compressor failure or sudden power outage, the gas pressure in the pipeline may not meet the operating requirements of the pneumatic valve, affecting the stability of the entire system and potentially leading to safety accidents.

[0004] Existing technologies to prevent excessively low gas source pressure involve increasing the pressure parameters of the gas source and using larger-diameter pipelines to transport the gas, thereby reducing the flow rate and pressure loss. However, these methods have high equipment investment and operating costs. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic valve pressure stabilizing device to maintain the pressure of gas in the pipeline, so that the pneumatic valve can operate normally, and the pressure stabilizing device has low equipment investment and operating costs.

[0006] To achieve the above objectives, this utility model provides a pneumatic valve pressure stabilizing device, comprising:

[0007] The compressed air header has one end connected to the outlet of the air compressor and the other end connected to the air inlet of the pneumatic valve actuator.

[0008] A pressure-stabilizing pipe assembly includes a pressure-stabilizing inlet pipe and a pressure-stabilizing outlet pipe; both ends of the pressure-stabilizing pipe assembly are connected to the compressed air main pipe;

[0009] A pressure stabilizing tank is connected between the pressure stabilizing inlet pipe and the pressure stabilizing outlet pipe;

[0010] An intake check valve is connected to the pressure-stabilizing intake pipe;

[0011] A normally open solenoid valve is connected to the pressure-stabilizing gas outlet pipe;

[0012] A main pipe check valve is connected to the compressed air main pipe, and the main pipe check valve is located between the two connection ports of the pressure stabilizing pipe assembly and the compressed air main pipe;

[0013] A pressure transmitter is connected to the compressed air header, and the pressure transmitter is located between the pressure-stabilizing inlet pipe, the header check valve, and two connection ports of the compressed air header; and,

[0014] The control unit is used to receive the pressure signal from the pressure transmitter and control the opening and closing of the normally open solenoid valve.

[0015] Furthermore, a valve is also connected to the pressure-stabilizing air intake pipe, and the valve is located between the air intake check valve and the connection port between the pressure-stabilizing air intake pipe and the compressed air main pipe.

[0016] Furthermore, the valve is a manual ball valve.

[0017] Furthermore, the two ends of the pressure stabilizing tank are connected to the pressure stabilizing inlet pipe and the pressure stabilizing outlet pipe respectively via flanges.

[0018] Furthermore, the two ends of the intake check valve are connected to the pressure-stabilizing intake pipe via flanges.

[0019] Furthermore, the valve is connected to the pressure-stabilizing air inlet pipe via flanges at both ends.

[0020] Furthermore, the two ends of the normally open solenoid valve are connected to the pressure-stabilizing gas outlet pipe via flanges.

[0021] Furthermore, the two ends of the main pipe check valve are connected to the compressed air main pipe via flanges.

[0022] Compared with the prior art, the present invention has the following technical effects:

[0023] This invention relates to a pneumatic valve pressure stabilizing device. A pressure stabilizing pipe assembly is connected in parallel at both ends of a compressed air header. An inlet check valve, a pressure stabilizing tank, and a normally open solenoid valve are connected in series on the pressure stabilizing pipe assembly. A pressure transmitter and the header check valve are also connected to the compressed air header. When the air pressure in the compressed air header is low, the normally open solenoid valve is opened by the control unit, supplying air to the compressed air header using high-pressure gas stored in the pressure stabilizing tank to meet the air supply requirements of the pneumatic valve actuator. Furthermore, in the event of a sudden power failure, the normally open solenoid valve automatically opens, also supplying air to the compressed air header using high-pressure gas stored in the pressure stabilizing tank to meet the air supply requirements of the pneumatic valve actuator. This pneumatic valve pressure stabilizing device maintains the air pressure in the compressed air header by supplying air to it from the pressure stabilizing tank, ensuring the normal operation of the pneumatic valve. This pressure stabilizing device also has low equipment investment and operating costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of a pneumatic valve pressure stabilizing device provided in an embodiment of this utility model;

[0026] Figure 2 for Figure 1 Cross-sectional structural diagram of the intermediate pressure stabilizing tank;

[0027] Figure 3 for Figure 2 A schematic diagram of the structure of section AA.

[0028] The following are the labeling elements in the figure:

[0029] 1. Pressure stabilizing tank; 2. Inlet check valve; 3. Normally open solenoid valve; 4. Valve; 5. Pressure stabilizing pipe assembly; 51. Pressure stabilizing inlet pipe; 52. Pressure stabilizing outlet pipe; 6. Main pipe check valve; 7. Pressure transmitter; 8. Compressed air main pipe. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The singular forms “a,” “the,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0034] Please see Figures 1-3 The present invention will now describe a pneumatic valve pressure stabilizing device provided in an embodiment of the present invention. Figure 1 The direction of the middle arrow indicates the direction of high-pressure gas flow.

[0035] In one embodiment of this utility model, a pneumatic valve pressure stabilizing device is provided, including: a compressed air main pipe 8, a pressure stabilizing pipe assembly 5, a pressure stabilizing tank 1, an inlet check valve 2, a normally open solenoid valve 3, a main pipe check valve 6, a pressure transmitter 7, and a control unit (not shown in the figure). One end of the compressed air main pipe 8 is connected to the outlet of the air compressor, and the other end is connected to the air inlet of the pneumatic valve actuator; the pressure stabilizing pipe assembly 5 includes a pressure stabilizing inlet pipe 51 and a pressure stabilizing outlet pipe 52; both ends of the pressure stabilizing pipe assembly 5 are connected to the compressed air main pipe 8; the pressure stabilizing tank 1 is connected between the pressure stabilizing inlet pipe 51 and the pressure stabilizing outlet pipe 52; the inlet check valve 2 is connected to the pressure stabilizing inlet pipe 51; the normally open solenoid valve 3 is connected to the pressure stabilizing outlet pipe 52; the main pipe check valve 6 is connected to the compressed air main pipe 8, and the main pipe check valve 6 is located between the two connection ports of the pressure stabilizing pipe assembly 5 and the compressed air main pipe 8; the pressure transmitter 7 is connected to the compressed air main pipe 8, and the pressure transmitter 7 is located between the pressure stabilizing inlet pipe 51, the main pipe check valve 6, and the two connection ports of the compressed air main pipe 8; the control unit is used to receive the pressure signal from the pressure transmitter 7 and control the opening and closing of the normally open solenoid valve 3.

[0036] Under normal operating conditions, when the pressure stabilizing device is in operation, the high-pressure gas in the compressed air header 8 enters the pressure stabilizing tank 1 through the pressure stabilizing inlet pipe 51 and the inlet check valve 2. After the air pressure in the pressure stabilizing tank 1 is balanced with the air pressure in the compressed air header 8, the inlet check valve 2 automatically closes, and the normally open solenoid valve 3 is in the closed state. When the air pressure in the compressed air header 8 is lower than the minimum air pressure required for the normal operation of the pneumatic valve, the pressure transmitter 7 transmits the pressure signal to the control unit of the pneumatic valve. The control unit controls the normally open solenoid valve 3 to open, delivering the high-pressure gas in the pressure stabilizing tank 1 to the compressed air header 8, thereby increasing and stabilizing the air pressure in the compressed air header 8. At this time, the header air pressure at the outlet of the pressure stabilizing outlet pipe 52 is higher than the header air pressure at the inlet of the pressure stabilizing inlet pipe 51, and the header check valve 6 automatically closes, stabilizing the air supply pressure on the pneumatic valve side. Once the air pressure in the compressed air header 8 returns to above the minimum pressure required for the pneumatic valve to operate normally, the pressure transmitter 7 transmits a pressure signal to the control unit of the pneumatic valve. The control unit then controls the normally open solenoid valve 3 to close. The gas in the compressed air header 8 serves two purposes: providing an air source for the pneumatic valve and replenishing the pressure stabilizing tank 1 for backup.

[0037] In the event of a sudden power failure, the pressure transmitter 7 will fail, and the normally open solenoid valve 3 will automatically switch to the open state after power failure, allowing the pressure stabilizing tank 1 to automatically replenish and stabilize the compressed air main pipe 8.

[0038] This utility model discloses a pneumatic valve pressure stabilizing device. A pressure stabilizing pipe assembly 5 is connected in parallel at both ends of a compressed air header 8. An inlet check valve 2, a pressure stabilizing tank 1, and a normally open solenoid valve 3 are connected in series on the pressure stabilizing pipe assembly 5. A pressure transmitter 7 and a header check valve 6 are connected to the compressed air header 8. When the air pressure in the compressed air header 8 is low, the normally open solenoid valve 3 can be opened by the control unit, supplying air to the compressed air header 8 with high-pressure gas stored in the pressure stabilizing tank 1 to meet the air supply requirements of the pneumatic valve actuator. Furthermore, in the event of a sudden power failure, the normally open solenoid valve 3 automatically opens, also supplying air to the compressed air header 8 with high-pressure gas stored in the pressure stabilizing tank 1 to meet the air supply requirements of the pneumatic valve actuator. This pneumatic valve pressure stabilizing device maintains the gas pressure in the compressed air header 8 by supplying air to it with the pressure stabilizing tank 1, allowing the pneumatic valve to operate normally. This pressure stabilizing device also has low equipment investment and operating costs.

[0039] Furthermore, in this embodiment, a valve 4 is also connected to the pressure-stabilizing intake pipe 51. The valve 4 is located between the intake check valve 2 and the connection port between the pressure-stabilizing intake pipe 51 and the compressed air main pipe 8. Specifically, the valve 4 can be a manual ball valve. By setting the valve 4, when the pressure-stabilizing pipe assembly 5 of the pressure-stabilizing device and the equipment connected to it need maintenance, the main process flow does not need to be interrupted. Maintenance work can be carried out simply by closing the manual valve 4 and performing necessary pressure relief.

[0040] exist Figure 1 In this configuration, the two ends of the pressure stabilizing tank 1 are connected to the pressure stabilizing inlet pipe 51 and the pressure stabilizing outlet pipe 52 respectively via flanges. The inlet of the pressure stabilizing tank 1 is connected to the inlet check valve 2, and the outlet is connected to the pressure stabilizing outlet pipe 52. Both ends of the inlet check valve 2 and the manual valve 4 are connected in series with flanges in the middle of the pressure stabilizing inlet pipe 51. The normally open solenoid valve 3 remains closed under normal operating conditions. Both ends of the normally open solenoid valve 3 are connected with flanges and installed on the pressure stabilizing outlet pipe 52 near the compressed air header 8. The main pipe check valve 6 and the pressure transmitter 7 are connected in series on the compressed air main pipe 8. The two ends of the main pipe check valve 6 are connected to the compressed air main pipe 8 by flanges, and the installation position is close to the interface between the pressure stabilizing outlet pipe 52 and the compressed air main pipe 8. The pressure transmitter 7 is installed between the interface between the main pipe check valve 6 and the pressure stabilizing inlet pipe 51 and the compressed air main pipe 8. It can output the gas pressure signal in the compressed air main pipe 8 to the control unit in real time. The control unit controls the opening and closing of the normally open solenoid valve 3 according to the received gas pressure signal.

[0041] In a specific implementation of the pneumatic valve pressure stabilizing device according to this utility model embodiment, the volume and pressure of the pressure stabilizing tank 1, as well as the parameters of the auxiliary valves, pipelines, and pressure transmitter 7, are first determined based on the pressure of the compressed gas, the air consumption of the pneumatic valve, and the minimum operating air pressure. Secondly, the components of the device are arranged according to... Figure 1 The components are installed as a whole, and a pressure test is conducted. Finally, the pressure transmitter 7 and the normally open solenoid valve 3 are debugged. After confirming that the pressure signal acquisition is normal and the normally open solenoid valve 3 operates smoothly, the manual valve 4 is opened and the normally open solenoid valve 3 is closed, and the pressure stabilizing device is put into operation.

[0042] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pneumatic valve pressure stabilizing device, characterized by, The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit.

2. The pressure stabilizing device for a pneumatic valve according to claim 1, wherein The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit.

3. A pressure stabilizing device for a pneumatic valve according to claim 2, wherein The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit.

4. The air operated valve pressure stabilizing device of claim 2 wherein, The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit.

5. A pneumatic valve pressure stabilizing device as claimed in claim 4, characterized in that The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit.

6. A pressure stabilizing device for a pneumatic valve as defined in claim 5, wherein The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit.

7. A pneumatic valve pressure stabilizing device as claimed in claim 6, characterized in that The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit.

8. A pneumatic valve pressure stabilizing device as claimed in claim 7, characterized in that The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check valve, a normally open electromagnetic valve, a main pipe check valve, a pressure transmitter and a control unit. The utility model relates to a compressed air supply pipe, a pressure stabilizing pipe assembly, a pressure stabilizing tank, an inlet check

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