Portable gas supply device

Abstract

The utility model relates to the technical field of air supply devices, in particular to a portable air supply device, which comprises a movable box body and an air supply system arranged in the movable box body, the air supply system comprises an air storage tank, the inlet of the air storage tank is provided with an inflation air path, and the outlet of the air storage tank is provided with a test air path; wherein the two gas storage tanks are connected in parallel, so that a proper number of gas storage tanks can be selected according to the gas demand of a to-be-tested product; according to the utility model, the two gas storage tanks are arranged in parallel, and a proper number of gas storage tanks can be selected according to the required gas quantity of the rear-end product, so that under the condition that the test of the rear-end product is not influenced, when the rear-end product with less required gas quantity is detected, the transfer difficulty of the movable box body is reduced, and the portable function is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of air supply devices, in particular to a portable air supply device. Background Art

[0002] Air supply equipment, with its gas storage and pressure-reducing output capabilities, is commonly used for testing aircraft back-end products, typically located within a dedicated test chamber. During testing, the aircraft's back-end products must be moved to this test chamber. However, some products are already installed on an aircraft, requiring them to be moved to the test chamber along with the aircraft, or removed and moved separately. This practice significantly impacts testing efficiency. Therefore, a design for an air supply device specifically designed for testing back-end products already installed on an aircraft is needed.

[0003] For this purpose, we designed a portable gas supply device. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the utility model discloses a portable air supply device.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions:

[0006] A portable air supply device comprises a mobile box and an air supply system arranged in the mobile box, wherein the air supply system comprises an air storage tank, an air charging circuit is provided at the inlet of the air storage tank, and a test circuit is provided at the outlet of the air storage tank;

[0007] Wherein, two gas storage tanks are provided in parallel so as to select a suitable number of gas storage tanks according to the gas demand of the product to be tested.

[0008] Preferably, the inflation air circuit includes an inflation interface, a gas filter and a three-way control hand valve A connected in sequence, and the two outlets of the three-way control hand valve A are respectively connected to the two corresponding inlets of the gas storage tanks.

[0009] Preferably, an air pressure detector A is provided between the gas filter and the three-way control manual valve A.

[0010] Preferably, the test gas circuit includes a three-way control hand valve B, a pressure reducing valve, a solenoid valve A and a test interface connected in sequence, and the two inlets of the three-way control hand valve B are respectively connected to the two gas tank outlets.

[0011] Preferably, the test gas circuit further includes a solenoid valve B and a vent connected in sequence, and the inlet of the solenoid valve B is correspondingly connected to the outlet of the solenoid valve A.

[0012] Preferably, the test gas circuit also includes a three-way control hand valve C, the inlet of the three-way control hand valve C is correspondingly connected to the inlet of the solenoid valve B, and the two outlets of the three-way control hand valve C are correspondingly connected to the inlet and the vent of the solenoid valve A respectively.

[0013] Preferably, an air pressure detector B is provided between the pressure reducing valve outlet and the solenoid valve A.

[0014] Preferably, a safety valve is provided between the pressure reducing valve outlet and the air pressure detector B.

[0015] Preferably, a control circuit for controlling the air supply system is further provided inside the mobile box, and the control circuit is powered by a lithium battery.

[0016] Preferably, the mobile box is provided with an operating panel on the top, handles on both ends, two gas storage tanks are provided at intervals along the length of the inner cavity, and supporting feet or walking wheels are evenly arranged on the bottom surface;

[0017] Among them, a protective cover that can be covered is also provided on the top of the mobile box.

[0018] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0019] 1. Since two gas storage tanks are set in parallel, it is possible to select an appropriate number of gas storage tanks according to the gas volume required by the back-end product. This can reduce the difficulty of transferring the mobile box when testing back-end products that require less gas without affecting the back-end product testing, thereby achieving portability.

[0020] 2. The setting of solenoid valve A and solenoid valve B can remotely control the gas supply to the back-end product of the test gas circuit box, and remotely control the gas discharge in the back-end product after the test, which is conducive to improving the test efficiency;

[0021] 3. The setting of the three-way control manual valve C can supply gas to the back-end product for testing through the three-way control manual valve C when the solenoid valve A fails, and can also control the gas discharge in the back-end product through the three-way control manual valve C when the solenoid valve B fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the gas supply system of the present utility model;

[0023] Figure 2 It is a structural diagram of the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the mobile box in the utility model;

[0025] Figure 4 This is a schematic diagram of the layout of the operation panel in this utility model.

[0026] In the figure: 1. Mobile box; 11. Operation panel; 12. Handle; 13. Protective cover; 2. Air supply system; 21. Air tank; 22. Inflating air circuit; 221. Inflating interface; 222. Gas filter; 223. Three-way control manual valve A; 224. Air pressure detector A; 23. Test air circuit; 231. Three-way control manual valve B; 232. Pressure reducing valve; 233. Solenoid valve A; 234. Test interface; 235. Three-way control manual valve C; 236. Vent; 237. Solenoid valve B; 238. Air pressure detector B; 239. Safety valve; 3. Lithium battery. DETAILED DESCRIPTION

[0027] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right" and so on to indicate directions or positional relationships, they only correspond to the drawings of the present application and are for the convenience of describing the present invention; it should be understood that if there are terms such as "end", "side", "end part", "lateral", "transverse", "longitudinal" and so on to indicate directions or positional relationships, they only correspond to the length and width of the corresponding parts, that is, "end part" indicates the head and tail area of ​​the corresponding part in the length direction, and "side part" indicates the head and tail area of ​​the corresponding part in the width direction; this is for the convenience of describing the present invention and does not indicate or imply that the device or element referred to must have a specific direction.

[0028] Example 1, combined with the attached Figure 1-4 A portable air supply device includes a mobile box 1 and an air supply system 2 provided in the mobile box 1. The air supply system 2 includes an air storage tank 21. An air charging path 22 is provided at the inlet of the air storage tank 21. A test air path 23 is provided at the outlet of the air storage tank 21.

[0029] Among them, two gas storage tanks 21 are provided in parallel so that an appropriate number of gas storage tanks 21 can be selected according to the gas demand of the product to be tested; that is, for example, the gas output of each gas storage tank 21 is M. When the gas demand of the product to be tested is less than M, only one of the gas storage tanks 21 can be filled with M gas before the test, and the other gas storage tank 21 is in an empty state; when the gas demand of the product to be tested is greater than M and less than 2M, the two gas storage tanks 21 can be filled with M gas before the test to meet the gas demand of the product to be tested.

[0030] Since two gas storage tanks 21 are arranged in parallel, it is possible to select a suitable number of gas storage tanks 21 according to the gas volume required by the back-end product, thereby reducing the difficulty of transferring the mobile box 1 when testing the back-end product requiring less gas volume without affecting the back-end product test, thereby achieving the portability function.

[0031] Furthermore, the inflation air circuit 22 includes an inflation interface 221, a gas filter 222 and a three-way control manual valve A223 connected in sequence, and the two outlets of the three-way control manual valve A223 are respectively connected to the two inlets of the gas storage tanks 21; that is, when inflating the gas storage tank 21, the external gas source can be connected through the inflation interface 221, and the three-way control manual valve A223 is opened. At this time, the gas from the external gas source passes through the gas filter 222 and the three-way control manual valve A223 and enters the gas storage tank 21 in sequence for inflation.

[0032] Furthermore, an air pressure detector A224 is provided between the gas filter 222 and the three-way control manual valve A223. This arrangement allows the air pressure detector A224 to detect the air pressure of the gas entering the gas storage tank 21 from the external air source.

[0033] Furthermore, the test gas circuit 23 includes a three-way controlled manual valve B231, a pressure reducing valve 232, a solenoid valve A233 and a test interface 234 connected in sequence, and the two inlets of the three-way controlled manual valve B231 are respectively connected to the two outlets of the gas storage tanks 21; that is, when testing the back-end product, the three-way controlled manual valve B231 is used to allow the gas in the gas storage tank 21 to pass through the pressure reducing valve 232, and then the back-end product is tested through the solenoid valve A233 and the test interface 234; during actual operation, the three-way controlled manual valve B231 can be opened first, and then the test interface 234 can be connected to the back-end product. At this time, the solenoid valve A233 can be opened by remote control to ventilate the test gas circuit 23, and there is no need for personnel to approach the gas supply device, which is conducive to improving test efficiency.

[0034] Furthermore, a control circuit 3 for controlling the air supply system 2 is provided inside the mobile box 1, and the control circuit 3 is powered by a lithium battery.

[0035] As needed, the mobile box 1 is provided with an operating panel 11 on the top, handles 12 at both ends, two gas storage tanks 21 are spaced apart along the length of the inner cavity, and supporting feet or walking wheels are evenly arranged on the bottom;

[0036] The top of the mobile box 1 is also provided with a protective cover 13 that can be covered; this arrangement can prevent dust from covering the operating panel 11 when the mobile box is idle, thereby affecting the operation.

[0037] Example 2, combined with the attached Figure 4 A portable gas supply device, based on the first embodiment, wherein the test gas circuit 23 further includes a solenoid valve B237 and a vent port 236 connected in sequence, with the inlet of the solenoid valve B237 correspondingly connected to the outlet of the solenoid valve A233. This allows the gas in the back-end product to be vented through the solenoid valve B237 after the test is completed, and the test interface 234 can then be removed from the back-end product, thereby improving the safety factor.

[0038] The test gas circuit 23 also includes a three-way controlled manual valve C235, the inlet of the three-way controlled manual valve C235 is correspondingly connected to the inlet of the solenoid valve B237, and the two outlets of the three-way controlled manual valve C235 are correspondingly connected to the inlet of the solenoid valve A233 and the vent 236 respectively; when the solenoid valve A233 fails, the three-way controlled manual valve C235 can be used to supply gas to the back-end product for testing, and when the solenoid valve B237 fails, the three-way controlled manual valve C235 can be used to control the gas in the back-end product to be vented, and then the test interface 234 can be removed from the back-end product, thereby improving the safety factor.

[0039] As needed, an air pressure detector B238 is provided at the outlet of the pressure reducing valve 232 so that the air pressure in the test air circuit 23 can be detected by the air pressure detector B238.

[0040] As needed, a safety valve 239 is provided between the outlet of the pressure reducing valve 232 and the air pressure detector B238, so that the air pressure in the test air circuit 23 can be set through the safety valve 239 to prevent the air pressure in the test air circuit 23 from being inconsistent with the air pressure required by the back-end product.

[0041] As needed, there can be two vent ports 236, one corresponding to the solenoid valve B237 and the three-way control manual valve C235; or there can be one, with the solenoid valve B237 and the three-way control manual valve C235 connected to the vent port 236 through a three-way pipe.

[0042] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A portable air supply device, characterized in that: The invention comprises a mobile box (1) and an air supply system (2) arranged in the mobile box (1), wherein the air supply system (2) comprises an air storage tank (21), an inlet of the air storage tank (21) is provided with an air charging path (22), and an outlet of the air storage tank (21) is provided with a test path (23); The inflation gas circuit (22) comprises an inflation interface (221), a gas filter (222) and a three-way control hand valve A (223) connected in sequence, and the two outlets of the three-way control hand valve A (223) are respectively connected to the inlets of the two gas storage tanks (21); The test gas circuit (23) comprises a three-way control hand valve B (231), a pressure reducing valve (232), a solenoid valve A (233) and a test interface (234) connected in sequence, wherein the two inlets of the three-way control hand valve B (231) are respectively connected to the outlets of the two gas storage tanks (21); Wherein, two gas storage tanks (21) are provided in parallel, so that a suitable number of gas storage tanks (21) can be selected according to the gas demand of the product to be tested.

2. A portable air supply device according to claim 1, characterized in that: An air pressure detector A (224) is provided between the gas filter (222) and the three-way control manual valve A (223).

3. The portable air supply device according to claim 1, characterized in that: The test gas circuit (23) further includes a solenoid valve B (237) and a vent (236) connected in sequence, wherein the inlet of the solenoid valve B (237) is correspondingly connected to the outlet of the solenoid valve A (233).

4. A portable air supply device according to claim 3, characterized in that: The test gas circuit (23) further includes a three-way control hand valve C (235), the inlet of the three-way control hand valve C (235) correspondingly communicating with the inlet of the solenoid valve B (237), and the two outlets of the three-way control hand valve C (235) correspondingly communicating with the inlet of the solenoid valve A (233) and the vent (236), respectively.

5. The portable air supply device according to claim 4, characterized in that: An air pressure detector B (238) is provided between the outlet of the pressure reducing valve (232) and the solenoid valve A (233).

6. The portable air supply device according to claim 1, characterized in that: A safety valve (239) is provided between the outlet of the pressure reducing valve (232) and the air pressure detector B (238).

7. The portable air supply device according to claim 1, characterized in that: A control circuit (3) for controlling the air supply system (2) is also provided inside the mobile box (1), and the control circuit (3) is powered by a lithium battery.

8. The portable air supply device according to claim 1, characterized in that: The mobile box (1) is provided with an operating panel (11) on the top, handles (12) on both ends, two gas storage tanks (21) are provided at intervals along the length of the inner cavity, and supporting feet or running wheels are evenly arranged on the bottom surface; The top of the movable box (1) is also provided with a protective cover (13) that can be covered.

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