阅读说明：本技术 手持式机舱气密性检查装置 (Handheld cabin air tightness inspection device ) 是由 陈元恺 仇全 郭子昂 赵振平 应布 于 2019-08-15 设计创作，主要内容包括：本发明公开了一种手持式机舱气密性检查装置,包括底座(1)、抽气打气筒(5),抽气打气筒(5)由筒身、筒盖(17)、活塞杆(3)、活塞(18)、进出气转换接头(6)、进气单向阀、单向出气阀组成,活塞杆(3)穿过筒盖中孔的一端与活塞(18)连接,筒身的一端连接筒盖,筒身的另一端与进出气转换接头连接,进气单向阀、单向出气阀分别连接在进出气转换接头(6)上；底座内部有用于作为气罐的气路,气路的一端用于连接压力表,气路的另一端用于连接进气单向阀；底座外侧设有支撑抽气打气筒(5)的支撑部。本发明可单人手持操作,结构简单,可靠性高,能够检测飞机座舱气密性。(The invention discloses a handheld cabin air tightness checking device which comprises a base (1) and an air extraction inflator (5), wherein the air extraction inflator (5) consists of a cylinder body, a cylinder cover (17), a piston rod (3), a piston (18), an air inlet and outlet conversion joint (6), an air inlet one-way valve and a one-way air outlet valve, one end of the piston rod (3) penetrating through a middle hole of the cylinder cover is connected with the piston (18), one end of the cylinder body is connected with the cylinder cover, the other end of the cylinder body is connected with the air inlet and outlet conversion joint, and the air inlet one-way valve and the one-way air outlet valve are respectively connected to the air inlet and outlet conversion joint (6); an air channel used as an air tank is arranged in the base, one end of the air channel is used for connecting a pressure gauge, and the other end of the air channel is used for connecting an air inlet one-way valve; the outer side of the base is provided with a supporting part for supporting the air pumping inflator (5). The invention can be operated by a single person in a hand-held manner, has simple structure and high reliability, and can detect the air tightness of the airplane cabin.)

1. The utility model provides a hand-held type cabin gas tightness inspection device, includes base (1), inflates bleeding (5), its characterized in that: the air suction inflator (5) consists of a cylinder body, a cylinder cover (17), a piston rod (3), a piston (18), an air inlet and outlet conversion joint (6), an air inlet one-way valve and a one-way air outlet valve, wherein the piston rod (3) penetrates through one end of a middle hole of the cylinder cover to be connected with the piston (18), one end of the cylinder body is connected with the cylinder cover, the other end of the cylinder body is connected with the air inlet and outlet conversion joint, and the air inlet one-way valve and the one-way air outlet valve are respectively connected to the air inlet and outlet conversion joint (6);

An air channel used as an air tank is arranged in the base, one end of the air channel is used for connecting a pressure gauge, and the other end of the air channel is used for connecting an air inlet one-way valve; the outer side of the base is provided with a supporting part for supporting the air pumping inflator (5).

2. The device for checking the airtightness of a handheld cabin according to claim 1, wherein the support portion comprises a groove provided at an upper end of the base, and a clip (4) for fixing the pump (5) after the pump (5) is placed in the groove.

3. The handheld cabin air tightness inspection device according to claim 1, wherein the handheld portion of the base is covered with a soft anti-slip material and provided with an anti-slip groove.

4. The handheld cabin airtightness inspection device according to claim 1, wherein a threaded interface is reserved at one end of the air path, the three-way joint (2) is connected through the threaded interface, and the three-way joint (2) is connected with the pressure gauge through a gas pipeline.

5. The hand-held type cabin air tightness inspection device according to claim 1, characterized in that the other end of the air passage is a protruding cylindrical joint (16), and the cylindrical joint (16) is connected with the air inlet one-way valve through an air pipeline.

6. The hand-held type cabin airtightness inspection device according to claim 1, wherein the air inlet check valve (7) is composed of a first plug (11), a first sealing ring (10), a first stopper (9), a first spring (12), and an air inlet head (7), one end of the first plug and the first sealing ring (10) form a sealing surface, the other end of the first plug penetrates through the first spring (12) to be connected with the first stopper (9), the first stopper (9) is in contact with the air inlet head (7), and the air inlet head (7) is connected to the air inlet/outlet adapter (6).

7. The hand-held type cabin airtightness inspection device according to claim 1, wherein the air outlet check valve is composed of a second plug (14), a second sealing ring (15), a second spring (13), and an air outlet head (8), one end of the second plug (14) and the first sealing ring (15) form a sealing surface, the other end of the second plug (14) penetrates through the second spring (13) to contact with the air outlet head (8), and the air outlet head (8) is connected to the air inlet/outlet adapter (6).

Technical Field

The invention belongs to the field of aviation instruments and meters, and particularly relates to a measuring device capable of detecting air tightness of an airplane cabin.

Background

The aircraft need carry out short-term test to its passenger cabin gas tightness when carrying out ground guarantee, because its special service condition and operation requirement, need small, light in weight, portable can single handheld operation, simple structure, the reliability is high, and the product that can satisfy above requirement is lacked at present domestically, has consequently carried out special customization.

disclosure of Invention

the invention aims to provide a handheld cabin air tightness inspection device which is used for detecting the air tightness of an airplane cabin and has the characteristics of small volume, light weight, portability, single-person handheld operation, simple structure, high reliability and the like.

The invention aims to be realized by the following technical scheme:

A hand-held type cabin gas tightness inspection device comprises a base 1 and an air extraction inflator 5, wherein the air extraction inflator 5 consists of a cylinder body, a cylinder cover 17, a piston rod 3, a piston 18, an air inlet and outlet conversion joint 6, an air inlet one-way valve and a one-way air outlet valve, one end of the piston rod 3 penetrating through a hole in the cylinder cover is connected with the piston 18, one end of the cylinder body is connected with the cylinder cover, the other end of the cylinder body is connected with the air inlet and outlet conversion joint, and the air inlet one-way valve and the one-way air outlet valve are respectively connected to the air inlet and outlet conversion joint;

An air channel used as an air tank is arranged in the base, one end of the air channel is used for connecting a pressure gauge, and the other end of the air channel is used for connecting an air inlet one-way valve; the outer side of the base is provided with a supporting part for supporting the air pumping inflator 5.

Preferably, the support portion comprises a groove provided at the upper end of the base, and a clip 4 for fixing the pump 5 after the pump 5 is placed in the groove.

Preferably, the handheld portion of the base is covered with a soft anti-slip material and provided with an anti-slip groove 20.

Preferably, a threaded connector is reserved at one end of the gas path and connected with the three-way connector 2 through the threaded connector, and the three-way connector 2 is connected with the pressure gauge through a gas pipeline.

Preferably, the other end of the air passage is a protruding cylindrical joint 16, and the cylindrical joint 16 is connected with the air inlet one-way valve through a gas pipeline.

Preferably, the air inlet check valve 7 consists of a first plug 11, a first sealing ring 10, a first stopper 9, a first spring 12 and an air inlet head 7, wherein one end of the first plug and the first sealing ring 10 form a sealing surface, the other end of the first plug penetrates through the first spring 12 to be connected with the first stopper 9, the first stopper 9 is in contact with the air inlet head 7, and the air inlet head 7 is connected to the air inlet and outlet conversion joint 6.

Preferably, the air outlet one-way valve consists of a second plug 14, a second sealing ring 15, a second spring 13 and an air outlet head 8, wherein one end of the second plug 14 and the first sealing ring 15 form a sealing surface, the other end of the second plug 14 passes through the second spring 13 to be in contact with the air outlet head 8, and the air outlet head 8 is connected to the air inlet and outlet adapter 6.

The invention has the beneficial effects that: the gas circuit and the base are integrated, the size and the weight are reduced, the single-person handheld operation function is realized, the gas inlet and outlet conversion joint is designed into a one-way valve form, the structure is simple, the assembly process is simple, the debugging is convenient, the environmental suitability is strong, and the reliability is high.

Drawings

FIG. 1 is a schematic structural diagram of a handheld cabin air tightness inspection device;

FIG. 2 is a schematic view of the pump;

FIG. 3 is a schematic view of an air in/out switching joint structure;

Fig. 4 is a cross-sectional view of the base.

FIG. 5 is a schematic view of the anti-slip groove of the base.

Detailed Description

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

Referring to fig. 1, the handheld cabin airtightness inspection device according to the present embodiment includes a base 1 and a suction air pump 5.

Referring to fig. 2, the air pump 5 is composed of a cylinder body, a cylinder cover 17, a piston rod 3, a piston 18, an air inlet and outlet adapter 6, an air inlet one-way valve and a one-way air outlet valve. One end of the piston rod 3 penetrating through the central hole of the cylinder cover is in threaded connection with the piston 18, and the piston 18 moves back and forth in the cylinder body by pulling the piston rod back and forth. One end of the cylinder body is connected with the cylinder cover, the other end of the cylinder body is connected with the air inlet and outlet conversion joint through threads, and the air inlet one-way valve and the one-way air outlet valve are respectively connected to the air inlet and outlet conversion joint 6.

The air inlet check valve 7 is used for injecting air into the barrel, for example, as shown in fig. 3, the air inlet check valve 7 is composed of a first plug 11, a first seal ring 10, a first stopper 9, a first spring 12 and an air inlet head 7, one end of the first plug and the first seal ring 10 form a sealing surface, the other end of the first plug penetrates through the first spring 12 to be connected with the first stopper 9, the first stopper 9 is in contact with the air inlet head 7, and the air inlet head 7 is connected to the air inlet and outlet conversion joint 6.

the air outlet one-way valve is used for injecting air in the barrel into the cabin, for example, as shown in fig. 3, the air outlet one-way valve is composed of a second plug 14, a second sealing ring 15, a second spring 13 and an air outlet head 8, one end of the second plug 14 and the first sealing ring 15 form a sealing surface, the other end of the second plug 14 passes through the second spring 13 to contact with the air outlet head 8, and the air outlet head 8 is connected to the air inlet and outlet adapter 6.

The sealing force of the air inlet one-way valve and the sealing force of the air outlet one-way valve are both derived from springs, the directions of the sealing forces are opposite, the one-way air inlet function is realized, and the simple structural form improves the assembly debugging efficiency and the product reliability.

Referring to fig. 4, the air passage is arranged in the base and used as an air tank, so that the weight of the base can be reduced, and meanwhile, a buffer is provided for air tightness detection. One end of the gas circuit is used for connecting a pressure gauge, and the other end of the gas circuit is used for connecting an air inlet one-way valve; the outer side of the base is provided with a supporting part for supporting the air pumping inflator 5.

By way of example, referring to fig. 1 and 4, the support portion includes a groove and a clip 4 disposed at the upper end of the base, the clip 4 is disposed in pair and fixed to the base 1 by a bolt, and the pair of clips 4 cooperate to clamp the air pump in the groove at the upper end of the base. And a threaded connector is reserved at one end of the gas circuit and is connected with a three-way joint 2 through the threaded connector, and the three-way joint 2 is connected with the pressure gauge through a gas pipeline. The other end of the air passage is provided with a protruding cylindrical joint 16, and the cylindrical joint 16 is connected with the air inlet one-way valve through an air pipeline. Referring to fig. 5, the hand-held portion of the base is covered with a soft anti-slip material and provided with an anti-slip groove 20.

The assembling and debugging steps of the handheld cabin air tightness inspection device are as follows: step one is to place a first sealing ring 10 in a groove, step two is to pass a first plug 11 through a lower hole, step three is to install a first spring 12 into one end of the first plug through the hole, step four is to assemble a first stopper 9 on the first plug 11 through threaded connection, step five is to press the stopper 9 through threaded connection of an air inlet head 7, the pre-pressure of the spring can be controlled by adjusting the screwing depth of the air inlet head, step six is to place a second sealing ring 15 in the groove, step seven is to press the big end of a second plug 14 on a second sealing ring 15, step eight is to press a second spring 13 on the second plug, step nine is to sleeve an air outlet head 8 into the second spring 13 through threaded connection, the pre-pressure of the second spring 13 can be controlled by adjusting the screwing depth of the air outlet head 7, step ten is to pass a piston rod 3 through an inner hole of a barrel cover 17, step eleven is to install a piston 18 on the piston rod 3 through threaded connection, the piston 18 is placed into the barrel body, the barrel cover 17 is assembled at the upper end of the barrel body 5 through threaded connection, the air inlet and outlet conversion joint 6 is assembled at the lower end of the barrel body 5 through threaded connection, the assembled air inlet inflator assembly is placed in a groove in the upper end of the base, one side of the air inlet and outlet conversion joint 6 is in the same direction with one side of the base cylindrical joint 16, the two clamps 4 are respectively installed at the upper end of the base through screws, and the tee joint 2 is connected to the base 1 through threads in a sixteen step.

when detecting the cabin gas tightness, base cylinder interface 16 passes through gas piping connection inlet head 7, and three way connection passes through the external manometer in gas piping connection cabin, and through taking out the piston, gas advances in the stack shell of taking out the inflater card from the gas circuit of base, through pushing away the piston, injects the gas in the stack shell into the cabin, waits to stop after the pressure rises a definite value, holds the piston rod tightly, records manometer pressure, and the quiet 1 minute of waiting sees whether pressure changes and judges the inside gas tightness in cabin.