A pressure limiting gas filling pressure regulating device

Abstract

The utility model discloses a kind of pressure-limited gas filling pressure regulation and control devices, including the shell on air compressor, the gas outlet one end of shell is connected and is equipped with air pipe, air pipe one end is connected and is equipped with n-shaped bend, n-shaped bend's outer surface is fixedly installed with connecting barrel, pressure sensing transmitter is fixedly installed in connecting barrel, the inductive end of pressure sensing transmitter is penetrated to n-shaped bend and is located at just upper end, shell one end is equipped with storage groove, storage groove is slidably installed with gas quantity detection mechanism. The utility model passes through pressure sensing transmitter and gas quantity detection mechanism, so that it is monitored by pressure and weight double parameters, adapt to different gas characteristics and filling demand, significantly improve filling accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of gas filling equipment, specifically a pressure-limiting gas filling pressure control device. Background Technology

[0002] Filling equipment is an important part of gas circulation. Currently, most gas filling is done manually. When filling gas cylinders, gas filling equipment is usually used.

[0003] Patent CN117346061B discloses a high-purity gas filling device, including a support frame on which a steel tank is placed. A clamping assembly is provided on the lower side wall of the support frame to clamp and position the steel tank. An inflation sealing assembly is provided on the upper part of the support frame for filling the steel tank with gas. This invention, through the inflation sealing assembly, allows the steel tank to be placed on the support frame and positioned correctly. The clamping assembly then clamps and secures the steel tank, improving its stability during the gas filling process. The inflation sealing assembly then fills the steel tank with acetylene gas, preventing leakage during the filling process and thus improving safety.

[0004] The aforementioned high-purity gas filling device does not have a quantitative filling function, and when filling the equipment, it is easy to overfill or underfill, and it is difficult to control in real time during the filling process. Utility Model Content

[0005] The purpose of this utility model is to provide a pressure-limiting gas filling pressure control device to solve the technical problem mentioned in the background art that the existing filling equipment does not have a quantitative filling function and is prone to overfilling or underfilling when filling the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pressure-limiting gas filling pressure control device includes a housing on an air compressor. One end of the housing's air outlet is connected to a gas pipe, and the other end of the gas pipe is connected to an n-shaped bend. A connecting cylinder is fixedly installed on the outer surface of the n-shaped bend, and a pressure sensor transmitter is fixedly installed inside the connecting cylinder. The sensing end of the pressure sensor transmitter extends through the n-shaped bend and is located at the top end. A storage tank is provided at one end of the housing, and a gas volume detection mechanism is slidably installed in the storage tank.

[0008] As a preferred embodiment of this utility model, a solenoid valve is connected and installed at the middle end of the trachea.

[0009] As a preferred embodiment of this utility model, the gas volume detection mechanism includes a gas storage tank. Connecting rods are fixedly installed on the upper and lower ends of the outer surface of the gas storage tank. The connecting rods are slidably inserted into the insertion slots, which are opened at the upper and lower ends of the storage tank, so that the gas storage tank is floating in the storage tank through the connecting rods.

[0010] As a further embodiment of this utility model, a weight sensor is fixedly installed inside the connecting rod at the lower end of the gas storage tank, and the lower surface of the weight sensor touches the lower surface inside the insertion slot.

[0011] As a further preferred embodiment of this utility model, both ends of the outer surface of each connecting rod are in contact with the ball bearing, while the ball bearing is rotatably installed in the insertion slot in a relative manner.

[0012] As a further embodiment of this utility model, the signal transmitting ends of both the weight sensor and the pressure sensor transmitter are connected to the signal receiving end of the controller, while the control output end of the controller is electrically connected to the electronic control end of the solenoid valve.

[0013] Compared with the prior art, the advantages of this utility model of a pressure-limiting gas filling pressure regulating device are as follows:

[0014] When inflating the equipment, the inflation pressure value can be input via the controller according to the equipment's needs. The air pipe is connected to the equipment's air inlet, and the air compressor is started, injecting air into the equipment through the air pipe, solenoid valve, and N-shaped bend. During this inflation process, the pressure sensor transmitter's sensing end is located directly above the N-shaped bend, effectively avoiding condensate and airflow disturbances, and accurately collecting pressure data within the pipeline in real time. This data is then transmitted to the controller. Simultaneously, a floating air volume detection mechanism installed in the storage tank accurately detects changes in the tank's weight and also feeds this weight data back to the controller, achieving dual detection to ensure the accuracy of the inflation volume. Furthermore, as inflation progresses, the pressure... When the force sensor transmitter detects that the pressure is close to the target value, the controller sends a signal to the solenoid valve to reduce the valve opening and decrease the gas flow rate, thus avoiding pressure overshoot. This dynamic response optimization method changes the problem of "overshoot-pressure relief" losses that are prone to occur in traditional mechanical valves, greatly improving filling efficiency. When the pressure reaches the set upper limit, the controller immediately closes the solenoid valve and stops filling. If, during the filling process, the gas volume detection mechanism detects that the weight of the equipment has reached the preset threshold, the controller will also trigger the solenoid valve to close even if the pressure has not reached the upper limit, preventing overfilling. This achieves dual parameter monitoring of pressure and weight to adapt to different gas characteristics and filling requirements, significantly improving filling accuracy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the storage slot structure in an embodiment of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the gas volume detection mechanism in an embodiment of the present invention.

[0020] Reference numerals: 1. Housing; 101. Air pipe; 102. Solenoid valve; 103. N-shaped bend; 104. Connecting cylinder; 105. Pressure sensor transmitter; 106. Storage tank; 107. Insertion slot; 2. Air volume detection mechanism; 201. Air tank; 202. Connecting rod; 203. Ball bearing; 204. Weight sensor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0022] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention 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 the embodiments of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention should be understood according to the specific circumstances.

[0024] See Figures 1-2 As shown in the figure, an embodiment of the present invention provides a pressure-limiting gas filling pressure control device, including a housing 1 on an air compressor. One end of the housing 1 has an air pipe 101 connected to its outlet. One end of the air pipe 101 has an n-shaped bend 103 connected to its outlet. A connecting cylinder 104 is fixedly installed on the outer surface of the n-shaped bend 103. A pressure sensor transmitter 105 is fixedly installed inside the connecting cylinder 104. The sensing end of the pressure sensor transmitter 105 extends through the n-shaped bend 103 and is located at its upper end. One end of the housing 1 has a storage slot 106. A gas volume detection mechanism 2 is slidably installed in the storage slot 106. A solenoid valve 102 is connected to the middle end of the air pipe 101.

[0025] like Figures 3-4 As shown, the gas volume detection mechanism 2 includes a gas storage tank 201. Connecting rods 202 are fixedly installed at both the upper and lower ends of the outer surface of the gas storage tank 201. The connecting rods 202 slide into insertion slots 107, which are located at the upper and lower ends of a storage tank 106, allowing the gas storage tank 201 to float within the storage tank 106 via the connecting rods 202. A weight sensor 204 is fixedly installed within the connecting rods 202 at the lower end of the gas storage tank 201, with its lower surface abutting against the lower surface of the insertion slot 107. Both ends of the outer surface of each connecting rod 202 abut against ball bearings 203, which are rotatably mounted in the insertion slots 107. The signal transmitting ends of the weight sensor 204 and the pressure sensor transmitter 105 are connected to the signal receiving end of the controller, while the control output end of the controller is electrically connected to the electrical control end of the solenoid valve 102.

[0026] When inflating the equipment, the inflation pressure value can be input through the controller according to the equipment's needs. The air pipe 101 is connected to the equipment's air inlet, and the air compressor is started to inject air into the equipment through the air pipe 101, solenoid valve 102, and n-shaped bend 103. During this inflation process, the sensing end of the pressure sensor transmitter 105 is located directly above the n-shaped bend 103, effectively avoiding condensate and airflow disturbances, and accurately collecting pressure data within the pipeline in real time. This data is then transmitted to the controller. Simultaneously, the air volume detection mechanism 2, floating in the storage tank 106, can accurately detect changes in the weight of the air tank 201 and also feeds the weight data back to the controller, achieving dual detection to ensure... To ensure the accuracy of the inflation volume, and as inflation proceeds, when the pressure sensor transmitter 105 detects that the pressure is close to the target value, the controller sends a signal to the solenoid valve 102 to reduce the valve opening and decrease the inflation flow rate, thus avoiding pressure overshoot. This dynamic response optimization method changes the problem of "overshoot-pressure relief" losses that are prone to occur in traditional mechanical valves, greatly improving filling efficiency. When the pressure reaches the set upper limit, the controller immediately closes the solenoid valve 102 to stop inflation. If, during the inflation process, the air volume detection mechanism 2 detects that the equipment weight has reached the preset threshold, the controller will still trigger the solenoid valve 102 to close even if the pressure has not reached the upper limit, to prevent overfilling, thus realizing dual parameter monitoring of pressure and weight.

[0027] During the inflation process, gas is transferred from the gas storage tank 201 into the equipment. Consequently, the weight of the gas storage tank 201 gradually decreases during inflation. The connecting rods 202 at the upper and lower ends of the tank 201 are pressed down within the insertion slot 107 along with the tank 201. The weight sensor 204 inside the lower connecting rod 202 then contacts the lower surface of the insertion slot 107 in real time, converting the weight change into an electrical signal that is transmitted to the controller. Simultaneously, the pressure transmitter 105 monitors the air pressure within the n-shaped bend 103 and feeds it back to the controller. As inflation continues, the gas storage... The weight of tank 201 continues to decrease until the pressure reaches the set upper limit or the weight decreases to the preset threshold. At this time, the solenoid valve 102 is automatically triggered to close and stop the inflation. During this process, the ball bearings 203 at both ends of the outer surface of the connecting rod 202 are installed in the insert groove 107 in a relative rotational manner. The rolling friction replaces the traditional sliding friction, which greatly reduces the resistance between the connecting rod 202 and the insert groove 107. This allows the weight change of the gas tank 201 to be transmitted to the weight sensor 204 more sensitively, improving the accuracy and response speed of weight detection and avoiding measurement lag or error caused by mechanical friction.

[0028] In summary, this invention significantly improves filling accuracy by monitoring both pressure and weight parameters to adapt to different gas characteristics and filling requirements.

[0029] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-limiting gas filling pressure regulating device, characterized in that: The air compressor includes a housing (1), one end of which is connected to an air pipe (101), and the other end of which is connected to an n-shaped bend (103). A connecting cylinder (104) is fixedly installed on the outer surface of the n-shaped bend (103), and a pressure sensor transmitter (105) is fixedly installed inside the connecting cylinder (104). The sensing end of the pressure sensor transmitter (105) extends through the n-shaped bend (103) and is located at the top. A storage slot (106) is provided at one end of the housing (1), and an air volume detection mechanism (2) is slidably installed inside the storage slot (106).

2. The pressure regulating device for pressure limiting gas filling according to claim 1, characterized in that: A solenoid valve (102) is connected to the middle end of the trachea (101).

3. The pressure regulating device for pressure limiting gas filling according to claim 2, characterized in that: The gas volume detection mechanism (2) includes a gas storage tank (201). Connecting rods (202) are fixedly installed on the upper and lower ends of the outer surface of the gas storage tank (201). The connecting rods (202) are slidably inserted into the insertion slot (107). The insertion slot (107) is opened at the upper and lower ends of the storage tank (106). The gas storage tank (201) is floating in the storage tank (106) through the connecting rods (202).

4. The pressure regulating device for pressure limiting gas filling according to claim 3, characterized in that: A weight sensor (204) is fixedly installed inside the connecting rod (202) at the lower end of the gas storage tank (201), and the lower surface of the weight sensor (204) touches the lower surface inside the insertion slot (107).

5. The pressure regulating device for pressure limiting gas filling according to claim 3, characterized in that: Both ends of the outer surface of each connecting rod (202) are in contact with the ball bearing (203), and the ball bearing (203) is rotatably installed in the insert groove (107) in a relative position.

6. The pressure regulating device for pressure limiting gas filling according to claim 4, characterized in that: The signal transmitting ends of the weight sensor (204) and the pressure sensor transmitter (105) are both connected to the signal receiving end of the controller, and the control output end of the controller is electrically connected to the electrical control end of the solenoid valve (102).

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