CN210832765U

CN210832765U - Vacuum drying device for gas cylinder

Info

Publication number: CN210832765U
Application number: CN201921925134.9U
Authority: CN
Inventors: 黄浩; 廖劲松; 魏启民
Original assignee: Chengdu Huatai Aviation Technology Co ltd
Current assignee: Chengdu Huatai Aviation Technology Co ltd
Priority date: 2019-11-10
Filing date: 2019-11-10
Publication date: 2020-06-23
Anticipated expiration: 2029-11-10

Abstract

The utility model discloses a gas cylinder vacuum drying device, including drying chamber and compression subassembly, be equipped with heating element in the drying chamber, wherein one end of drying chamber is equipped with rather than the one end of inside intercommunication keeping away from the drying chamber be equipped with the nitrogen gas intake pipe that communicates with heating element of nitrogen gas entry, be equipped with nitrogen gas in the nitrogen gas intake pipe in proper order and connect logical valve, first decompression governing valve, air inlet regulating valve, check valve, air inlet vacuum valve and pipe heater. The utility model discloses the device can replace domestic and foreign gas cylinder vacuum drying professional equipment, simple structure, and cost of manufacture and maintenance cost are very cheap.

Description

Vacuum drying device for gas cylinder

Technical Field

The utility model belongs to air equipment detects the field, concretely relates to gas cylinder vacuum drying device.

Background

At present, the vacuum drying of gas cylinders at home and abroad is less, and the special drying equipment manufactured by gas cylinder manufacturers is high in price and narrow in application range, so that the equipment is not suitable for popularization and use in the aviation maintenance industry. Therefore, a design is required to solve the above problems, but such a design exists in the prior art.

Disclosure of Invention

The utility model aims to solve the technical problem that just is not enough to above-mentioned prior art, provide a gas cylinder vacuum drying device, solved the problem that traditional special test equipment is high in price, and simple structure, automatic flow control alleviates personnel's job and guards consuming time, improves work efficiency, and the suitability is high to the low price is fit for multipurpose use such as test maintenance.

The utility model adopts the technical proposal that: the utility model provides a gas cylinder vacuum drying device, includes drying chamber and compression subassembly, be equipped with heating element in the drying chamber, wherein one end of drying chamber is equipped with rather than the one end of keeping away from the drying chamber of inside intercommunication be equipped with the nitrogen gas intake pipe with the heating element intercommunication of nitrogen gas entry, be equipped with nitrogen gas on the nitrogen gas intake pipe in proper order and connect logical valve, first decompression governing valve, air inlet control valve, check valve, air inlet vacuum valve and pipe heater, the drying chamber top is equipped with the evacuation pipe rather than inside intercommunication, be equipped with air exhaust governing valve, pressure release vacuum isolation valve, connection vacuum isolation valve, electromagnetism vacuum inflation valve and vacuum rotary vane pump from the one end that is close to the drying chamber to the one end of keeping away from the drying chamber on the evacuation pipe in proper order, the position and the heating element intercommunication that lie in pressure release vacuum isolation valve on the evacuation pipe and connect between the vacuum isolation valve, the compression subassembly, The pressure relief vacuum isolation valve and the compressed air inlet pipe which is connected with the vacuum isolation valve and is provided with a compressed air inlet at one end are communicated, and the compressed air inlet pipe is sequentially provided with a control air source switch, a second pressure reduction regulating valve, an air pressure connection valve and a pressure storage tank from one end close to the compressed air inlet to one end far away from the compressed air inlet.

In one embodiment, the heating assembly is two heaters connected in parallel.

In one embodiment, a pressure sensor is arranged on the nitrogen inlet pipe at a position between the one-way valve and the air inlet vacuum valve.

In one embodiment, the top of the drying chamber is provided with a temperature sensor and a safety valve.

In one embodiment, a vacuum sensor is further arranged on the vacuum-pumping pipe at a position between the pressure-relief vacuum isolation valve and the connecting vacuum isolation valve.

The beneficial effects of the utility model reside in that: the device can replace special vacuum drying equipment for gas cylinders at home and abroad, and has simple structure and very low manufacturing cost and maintenance cost.

Drawings

Fig. 1 is a schematic diagram of the present invention.

In the figure: 1. a drying chamber; 2. a heating assembly; 3. a temperature sensor; 4. a safety valve; 5. a nitrogen inlet; 6. a nitrogen inlet pipe; 7. a nitrogen connecting and opening valve; 8. a first pressure reducing regulating valve; 9. an air inlet regulating valve; 10. a one-way valve; 11. an air intake vacuum valve; 12. a pipe heater; 13. a pressure sensor; 14. vacuumizing a tube; 15. an air extraction regulating valve; 16. a pressure relief vacuum isolation valve; 17. connecting a vacuum isolation valve; 18. an electromagnetic vacuum inflation valve; 19. a vacuum rotary vane pump; 20. a compressed air inlet; 21. a compressed air inlet pipe; 22. controlling an air source switch; 23. a second pressure reducing regulating valve; 24. an air pressure connection valve; 25. a pressure storage tank; 26. a vacuum sensor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a vacuum drying device for a gas cylinder comprises a drying chamber 1 and a compression assembly, wherein a heating assembly 2 is arranged in the drying chamber 1, one end of the drying chamber 1 is provided with a nitrogen inlet pipe 6 communicated with the heating assembly 2, one end of the drying chamber 1, which is communicated with the inside of the drying chamber, is provided with a nitrogen inlet 5, the nitrogen inlet pipe 6 is communicated with the heating assembly 2, the nitrogen inlet pipe 6 is sequentially provided with a nitrogen communicating valve 7, a first pressure reducing regulating valve 8, an air inlet regulating valve 9, a one-way valve 10, an air inlet vacuum valve 11 and a pipeline heater 12, the top of the drying chamber 1 is provided with a vacuum pumping pipe 14 communicated with the inside of the drying chamber 1, the vacuum pumping pipe 14 is sequentially provided with an air exhaust regulating valve 15, a pressure relief vacuum isolating valve 16, a connecting vacuum isolating valve 17, an electromagnetic vacuum inflation valve 18 and a vacuum rotary vane pump 19 from one end close to the drying chamber 1 to one end far from the drying chamber 1, the compression assembly comprises a compressed air inlet pipe 21 which is communicated with the air inlet vacuum valve 11, the pressure relief vacuum isolation valve 16 and the connecting vacuum isolation valve 17 respectively and is provided with a compressed air inlet 20 at one end, and the compressed air inlet pipe 21 is sequentially provided with a control air source switch 22, a second pressure reduction regulating valve 23, an air pressure switch-on valve 24 and a pressure storage tank 25 from one end close to the compressed air inlet 20 to one end far away from the compressed air inlet 20.

In this embodiment, the heating element 2 is two heaters connected in parallel.

In this embodiment, a pressure sensor 13 is disposed on the nitrogen inlet pipe 6 between the check valve 10 and the inlet vacuum valve 11.

In this embodiment, a temperature sensor 3 and a safety valve 4 are disposed on the top of the drying chamber 1.

In this embodiment, a vacuum sensor 26 is further disposed on the evacuation tube 14 at a position between the pressure relief vacuum isolation valve 16 and the connecting vacuum isolation valve 17.

The nitrogen gas connects logical valve 7 in this drying device, 1, the model: ZC59-3B-20V/DC24V, high pressure solenoid valve, 20 MPa/normally closed DN 4. First decompression governing valve 8, 1, the model: r31LM-DGG-00, inlet 3000psi, outlet adjustable range 0-500 psi. Air intake regulating valve 9, 1, model: WL 91H-320P. Check valve 10, 1, model: H91X-320P. Pressure sensors 13, 1, model: CYYZ16-P-12, and the monitoring pressure range is 0-6 MPa. The number of the air inlet vacuum valves 11 is 1, and the model is as follows: GDQ-J10(b) -NC. Pipe heaters 12, 1, model: EH-200W. Temperature sensor 3, 1, model: CDDZ11Z-02, the monitoring temperature range is 0-200 ℃. Safety valve 4, 1, model: A21W-16T-0.2MPa, and the pressure relief pressure is 0.2 MPa. Air exhaust regulating valve 15, 1, model: WL 94H-160P. Pressure release vacuum isolation valve 16, 1, the model: GDQ-J16(b) -NO. Vacuum sensor 26, 1, model: PBS-310CP-16, vacuum degree measurement range 0-100 KPa. Connecting vacuum isolation valves 17, 1, model: GDQ-J16(b) -NC. Electromagnetic vacuum inflation valve 18, 1, model: DDC-JQ 16A-KF. Vacuum rotary vane pump 19, 1, model: WXZ-2. And controlling the air source switches 22, 1. Second pressure reducing regulating valve 23, 1, model: GC 200-08-F1. Air pressure connection valve 24, 1, model: 3V 2-08-NC. Pressure storage tank 25, 1, model: 2L/0.6 MPa.

The device can also be connected with a PLC system, and is provided with a pipeline heating controller, a drying box heating controller, an inlet pressure indicator, a vacuum pressure controller, an embedded industrial personal computer, a power electric starting button, a power electric stopping button, an emergency stopping button, a fault indicator lamp, a control power supply rotating button, a USB external interface 1, a USB external interface 2 and an external network expansion interface so as to realize intellectualization.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a gas cylinder vacuum drying device, includes drying chamber and compression assembly, its characterized in that: the drying chamber is internally provided with a heating assembly, one end of the drying chamber is provided with a nitrogen inlet pipe communicated with the heating assembly, the end of the drying chamber, which is far away from the drying chamber, is communicated with the inside of the drying chamber, the nitrogen inlet pipe is provided with a nitrogen connecting valve, a first pressure reducing regulating valve, an air inlet regulating valve, a one-way valve, an air inlet vacuum valve and a pipeline heater in sequence, the top of the drying chamber is provided with a vacuum-pumping pipe communicated with the inside of the drying chamber, the vacuum-pumping pipe is provided with an air-extracting regulating valve, a pressure-releasing vacuum isolating valve, a connecting vacuum isolating valve, an electromagnetic vacuum inflation valve and a vacuum rotary pump in sequence from one end close to the drying chamber to one end far away from the drying chamber, the position of the vacuum-pumping pipe, which is positioned between the pressure-releasing vacuum isolating valve and the connecting vacuum isolating valve, is communicated with the heating assembly, the compression assembly comprises a compressed air, the compressed air inlet pipe is sequentially provided with a control air source switch, a second pressure reduction regulating valve, an air pressure connection valve and a pressure storage tank from one end close to the compressed air inlet to one end far away from the compressed air inlet.

2. A gas cylinder vacuum drying device according to claim 1, characterized in that: the heating component is two heaters connected in parallel.

3. A gas cylinder vacuum drying device according to claim 1, characterized in that: and a pressure sensor is arranged at a position between the one-way valve and the air inlet vacuum valve on the nitrogen inlet pipe.

4. A gas cylinder vacuum drying device according to claim 1, characterized in that: and the top of the drying chamber is provided with a temperature sensor and a safety valve.

5. A gas cylinder vacuum drying device according to claim 1, characterized in that: and a vacuum sensor is also arranged at the position between the pressure relief vacuum isolation valve and the connecting vacuum isolation valve on the vacuumizing pipe.