Centralized gas supply equipment

Abstract

The utility model relates to the technical field of gas supply equipment, and discloses centralized gas supply equipment which comprises a low-temperature storage tank, an air temperature type vaporizer set, a pressure regulating valve set and an automatic switching device, the air temperature type vaporizer set is connected with a program control box, a nitrogen busbar is arranged between the low-temperature storage tank and the air temperature type vaporizer set, and the automatic switching device is connected with the program control box. The air temperature type vaporizer group is provided with a pressure regulating valve group through a Y-shaped filter, so that the centralized gas supply equipment which continuously operates for a long time can be provided, and the production requirements of customers are met.

Description

Technical Field

[0001] The utility model relates to the technical field of gas supply equipment technology, in particular to centralized gas supply equipment. Background Art

[0002] Chinese Patent: A centralized gas supply device that can be used in multiple scenarios, authorization publication number: CN220669167U, authorization publication date: March 26, 2024. Since the device is provided with two air inlet pipes, the Dewar tank ventilation can be seamlessly switched. The pressure sensor can detect the pressure in the tank, and then the boost valve and the pressure relief valve are controlled by the PLC controller. In this way, the pressure in the tank can be automatically adjusted, so that it will not be affected by the Dewar tank pressure and the change in the terminal dosage, which can increase the safety and portability of the device. In this way, the device can be used in multiple scenarios, but the equipment cannot perform 24-hour uninterrupted gas supply according to the production requirements for gas supply, so it is necessary to design a centralized gas supply equipment that can operate uninterruptedly for a long time to meet customer production needs. Therefore, a centralized gas supply equipment is proposed to solve the above problems. Summary of the invention

[0003] In order to solve the above problems, the utility model provides a centralized gas supply equipment, including a low-temperature storage tank, an air-temperature vaporizer group, a pressure regulating valve group and an automatic switching device, the air-temperature vaporizer group is connected to a program control box, a nitrogen bus is provided between the low-temperature storage tank and the air-temperature vaporizer group, the air-temperature vaporizer group is equipped with a pressure regulating valve group through a Y-type filter, and the low-temperature liquid gas is stored in the low-temperature storage tank, and then flows to the rear air-temperature vaporizer group to be vaporized into gaseous gas, and then stabilized to the required pressure through the pressure regulating valve group, and enters the workshop for production.

[0004] A further improvement of the utility model is that: the air-temperature vaporizer group includes two identical air-temperature vaporizers, and the two air-temperature vaporizers are designed to be connected in parallel in the pipeline.

[0005] A further improvement of the utility model is that: the inlet end of the air-temperature vaporizer is connected to a low-temperature cut-off valve, the low-temperature cut-off valve is pneumatically controlled to open and close, and a low-temperature safety valve is provided between the nitrogen bus and the air-temperature vaporizer.

[0006] A further improvement of the utility model is that the outlet pipeline of each air-temperature vaporizer is connected to a temperature transmitter, and a low-temperature safety valve is connected to a position of the temperature transmitter away from the air-temperature vaporizer.

[0007] A further improvement of the utility model is that: a low-temperature short-shaft stop valve is connected to the low-temperature safety valve, and a drain ball valve is provided at a position of the low-temperature short-shaft stop valve away from the low-temperature cut-off valve.

[0008] A further improvement of the utility model is that the nitrogen bus includes a pressure reducer, and two groups of angle valve groups are connected in parallel to the pressure reducer, and each of the angle valve groups includes two angle valves. The core function of this device that can achieve long-term uninterrupted circulation is the coordinated use of the air-temperature vaporizer group and the automatic switching device.

[0009] The utility model sets the temperature transmitter, and the temperature transmitter detects the set value and transmits the signal to the program control box. The program control box sends a command to the low-temperature cut-off valve to close and cut off, and at the same time opens another air-temperature vaporizer in standby state to continue working. By realizing the automatic switching of the air-temperature vaporizer, an uninterrupted gas supply is realized, thereby achieving the effect of extending the continuous working time and meeting the production needs of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0011] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 3 This is a schematic diagram of the nitrogen bus structure of the utility model.

[0013] Figure markings: 1-cryogenic storage tank, 2-air-temperature vaporizer group, 3-pressure regulating valve group, 4-automatic switching device, 5-program control box, 6-nitrogen bus, 7-pressure reducer, 8-angle valve group, 9-angle valve, 10-Y-type filter, 11-pressure regulating valve group, 12-air-temperature vaporizer, 13-cryogenic cut-off valve, 14-cryogenic safety valve, 15-cryogenic short-shaft stop valve, 16-drain ball valve. DETAILED DESCRIPTION

[0014] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0015] The utility model relates to a centralized gas supply equipment, comprising a low-temperature storage tank 1, an air-temperature vaporizer group 2, a pressure regulating valve group 3 and an automatic switching device 4, wherein the air-temperature vaporizer group 2 is connected to a program control box 5, a nitrogen bus 6 is arranged between the low-temperature storage tank 1 and the air-temperature vaporizer group 2, the nitrogen bus 6 comprises a pressure reducer 7, two groups of angle valve groups 8 are connected in parallel to the pressure reducer 7, each of the angle valve groups 8 comprises two angle valves 9, the functional core of the equipment being able to achieve long-term uninterrupted use of the cycle is the coordinated use of the air-temperature vaporizer group 2 and the automatic switching device 4; the air-temperature vaporizer group 2 is provided with a pressure regulating valve group 11 through a Y-type filter 10, and the low-temperature liquid gas is stored in the low-temperature storage tank 1, and thus flows to the rear air-temperature vaporizer group 2 to be vaporized into gaseous gas, and then stabilized to the required pressure through the pressure regulating valve group 11, and enters the workshop for production.

[0016] The air-temperature vaporizer group 2 includes two identical air-temperature vaporizers 12, which are designed in parallel in the pipeline; the inlet end of the air-temperature vaporizer 12 is connected to a low-temperature cut-off valve 13, and the low-temperature cut-off valve 13 is pneumatically controlled to switch, and a low-temperature safety valve 14 is provided between the nitrogen bus 6 and the air-temperature vaporizer 12; the outlet pipeline of each air-temperature vaporizer 12 is connected to a temperature transmitter 15, and the temperature transmitter 15 is connected to the low-temperature safety valve 14 at a position away from the air-temperature vaporizer 12, and the low-temperature short-shaft stop valve 15 is connected to the low-temperature safety valve 14, and the low-temperature short-shaft stop valve 15 is provided with an emptying ball valve 16 at a position away from the low-temperature cut-off valve 13.

[0017] When the working air-temperature vaporizer 12 reaches the upper limit of time, which is generally 6 to 8 hours, the vaporization capacity of the air-temperature vaporizer 12 will naturally decrease. This situation is caused by the long-term use of the air-temperature vaporizer 12. At this time, the gas temperature at the outlet gradually decreases; when the temperature transmitter 15 at the outlet detects the set value, it sends a signal to the program control box, and the program control box 5 sends an instruction to the low-temperature cut-off valve 13 to close and cut off, and at the same time opens another air-temperature vaporizer 12 in standby state to continue working. The above steps will be circulated uninterruptedly, and the automatic switching of the air-temperature vaporizer 15 can be realized, thereby achieving the effect of extending the continuous working time.

[0018] It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which are all within the protection scope of the utility model.

Claims

1. A centralized gas supply device, characterized in that: It includes a low-temperature storage tank, an air-temperature vaporizer group, a pressure regulating valve group and an automatic switching device. The air-temperature vaporizer group is connected to a program control box. A nitrogen bus is provided between the low-temperature storage tank and the air-temperature vaporizer group. The air-temperature vaporizer group is equipped with a pressure regulating valve group through a Y-type filter.

2. A centralized gas supply device according to claim 1, characterized in that: The air-temperature vaporizer group includes two identical air-temperature vaporizers, and the two air-temperature vaporizers are designed to be connected in parallel in a pipeline.

3. A centralized gas supply device according to claim 2, characterized in that: The inlet end of the air-temperature vaporizer is connected to a low-temperature cut-off valve, and the low-temperature cut-off valve is pneumatically controlled to open and close. A low-temperature safety valve is provided between the nitrogen bus and the air-temperature vaporizer.

4. A centralized gas supply device according to claim 3, characterized in that: The outlet pipeline of each air-temperature evaporator is connected to a temperature transmitter, and a low-temperature safety valve is connected to a position of the temperature transmitter away from the air-temperature evaporator.

5. A centralized gas supply device according to claim 4, characterized in that: The cryogenic safety valve is connected to a cryogenic short-shaft stop valve, and a drain ball valve is provided at a position of the cryogenic short-shaft stop valve away from the cryogenic cut-off valve.

6. The centralized gas supply equipment according to claim 3, characterized in that: The nitrogen busbar includes a pressure reducer, and two groups of angle valve groups are connected in parallel to the pressure reducer, and each of the angle valve groups includes two angle valves.

Images