阅读说明：本技术 一种视液镜气密及耐压性能检测设备 (Liquid sight lens airtightness and pressure resistance detection equipment ) 是由 顾坚 朱艳阳 赵明亚 于 2021-11-25 设计创作，主要内容包括：本发明公开了一种视液镜气密及耐压性能检测设备,包括底座,底座的上表面固定连接有透明的储水箱,储水箱的上开口铰接有箱盖板,箱盖板的下表面设置有密封储水箱上开口的橡胶密封条,所述底座的内部设置有抽气泵,储水箱的内部设置有盛放托板和夹持器,且储水箱的内后壁固定连接有吹扫喷头,抽气泵的输入端固定连接有负压吸管。该设备抽气泵对储水箱抽气,加压后的空气注入视液镜内,视液镜浸入水里,如有密封和耐压缺陷,在水里漏气,可以直观发现,检测过程储水箱内形成负压气压减小,所漏气的气泡要比常压环境下大,快速上浮水面,易于发现,即使微小漏气的气泡,也能实现放大,解决微小漏气不易发现的问题,保证检测的准确性。(The invention discloses an air tightness and pressure resistance detection device for a liquid sight glass, which comprises a base, wherein a transparent water storage tank is fixedly connected to the upper surface of the base, a tank cover plate is hinged to the upper opening of the water storage tank, a rubber sealing strip for sealing the upper opening of the water storage tank is arranged on the lower surface of the tank cover plate, an air suction pump is arranged inside the base, a containing support plate and a clamp holder are arranged inside the water storage tank, a blowing nozzle is fixedly connected to the inner rear wall of the water storage tank, and a negative pressure suction pipe is fixedly connected to the input end of the air suction pump. This equipment aspiration pump is bled to the storage water tank, air injection after the pressurization looks in the liquid mirror, look in the liquid mirror soaks, if have sealed and withstand voltage defect, leak gas in the water, can directly perceived discovery, the formation negative pressure atmospheric pressure in the testing process storage water tank reduces, the bubble of leaking gas will be big than under the ordinary pressure environment, the quick come-up surface of water, easily discovery, even the bubble of small gas leakage, also can realize enlargeing, solve the difficult problem of discovering of small gas leakage, guarantee the accuracy that detects.)

1. The utility model provides an airtight and withstand voltage performance check out test set of sight glass, includes base (1), and the last fixed surface of base (1) is connected with transparent storage water tank (2), and the upper shed of storage water tank (2) articulates there is box cover board (3), and the lower surface of box cover board (3) is provided with sealed storage water tank (2) upper shed's rubber seal strip, its characterized in that: the inside of base (1) is provided with aspiration pump (4), the inside of storage water tank (2) is provided with holds layer board (5) and holder, and the interior back wall fixedly connected with of storage water tank (2) sweeps shower nozzle (6), the input end fixedly connected with negative pressure straw (7) of aspiration pump (4), the lateral wall of storage water tank (2) is run through to the one end that aspiration pump (4) were kept away from in negative pressure straw (7), and extend to storage water tank (2) inside top of leaning on, aspiration pump (4) are the holder air feed, the last fixed surface that holds layer board (5) is connected with joint piece (8), the joint recess has been seted up on the surface of joint piece (8), look liquid mirror (9) and place in the joint recess, the holder will look the both ends opening of liquid mirror (9) and press from both sides tightly and to its inside gas injection.

2. The apparatus for detecting the air-tightness and pressure-resistance of the liquid-viewing mirror according to claim 1, wherein: the water storage tank is characterized in that a supporting air bag (10) is fixedly installed between the inner bottom wall of the water storage tank (2) and the containing supporting plate (5), the supporting air bag (10) is cylindrical, a steel wire ring is embedded in the side wall of the supporting air bag (10), and the surface of the supporting air bag (10) is corrugated.

3. The apparatus for detecting airtightness and pressure resistance of a liquid-viewing mirror according to claim 2, wherein: the inner bottom wall fixedly connected with guide post (11) of storage water tank (2) holds layer board (5) and has seted up the round hole, will hold layer board (5) slidable mounting on the surface of guide post (11) through the round hole, guide post (11) fixed surface is connected with two stoppers that set up from top to bottom.

4. The apparatus of claim 3, wherein the apparatus for detecting the air-tightness and pressure-resistance of the liquid-viewing mirror comprises: the air pump (4) also supplies air for the supporting air bag (10).

5. The apparatus of claim 3, wherein the apparatus for detecting the air-tightness and pressure-resistance of the liquid-viewing mirror comprises: the top end of the guide post (11) is provided with an air passage hole (12) extending downwards, the surface of the guide post (11) is provided with a middle pipe communicated with the air passage hole (12), and one end of the middle pipe, far away from the guide post (11), is communicated with the supporting air bag (10).

6. The apparatus for detecting airtightness and pressure resistance of a liquid-viewing mirror according to claim 5, wherein: the holder comprises a left plug (13) and a right plug (14), the left plug (13) is rotatably arranged on the left side wall of the water storage tank (2), and extends to the outside and is provided with a rotating handle, the side surface of the right plug (14) is provided with a telescopic rod, the telescopic rod comprises an outer sleeve (15) fixedly arranged on the right side wall of the water storage tank (2), the outer sleeve (15) is connected with a rotatable core bar (16) in a sliding way, one end of the core bar (16) is fixedly connected with the right plug (14), the other end of the core bar (16) is fixedly connected with a limiting disc (17), a spring (18) is arranged between the limiting disc (17) and the outer sleeve (15), the end surface of the limiting disc (17) is provided with a communicating hole, the communicating hole transversely extends and penetrates to the left end face of the right plug (14), the side face of the water storage tank (2) is fixedly connected with a pressure stabilizing chamber (19), and the limiting disc (17) is arranged in the pressure stabilizing chamber (19).

7. The apparatus for detecting airtightness and pressure resistance of a liquid-viewing mirror according to claim 6, wherein: the inner wall of the base (1) is provided with a pressure storage cavity (20), the output end of the air pump (4) is connected with the pressure storage cavity (20) in series, the pressure storage cavity (20) supplies air for the pressure stabilizing chamber (19), and the surface of the pressure stabilizing chamber (19) is fixedly connected with an air pressure gauge.

8. The apparatus for detecting airtightness and pressure resistance of a liquid-viewing mirror according to claim 7, wherein: the utility model discloses a water storage tank, including storage water tank (2), the interior diapire fixedly connected with of storage water tank (2) spacing casing (21), the rivers hole has been seted up on the surface of spacing casing (21), the inner wall of spacing casing (21) is provided with compensation gasbag (22), compensation gasbag (22) and storage pressure chamber (20) intercommunication, its intercommunication department is provided with the check valve, the spacing casing (21) be provided with valve (23), the input of valve (23), the output respectively with compensation gasbag (22) and sweep shower nozzle (6) intercommunication, the control knob of valve (23) extends to the outside of storage water tank (2).

9. The apparatus for detecting airtightness and pressure resistance of a liquid-viewing mirror according to claim 7 or 8, wherein: the rotating shaft is installed to storage pressure chamber (20) internal rotation, the one end fixedly connected with pneumatic fan blade (24) of axis of rotation, and pneumatic fan blade (24) are towards the exhaust vent of storage pressure chamber (20), and the fixed surface of axis of rotation is connected with magnet (25), and the inner wall of storage pressure chamber (20) inlays and is equipped with power generation coil (26), and the interior diapire fixedly connected with light emitting lamp area (27) of storage water tank (2), power generation coil (26) and light emitting lamp area (27) electric property intercommunication.

Technical Field

The invention relates to the technical field of quality control detection of a liquid sight glass, in particular to detection equipment for air tightness and pressure resistance of the liquid sight glass.

Background

The liquid viewing mirror has an auxiliary fitting in the refrigeration system, although it can not directly act on the refrigeration system, but can clearly know the condition of the refrigerant in the system through it, so that it can know in advance whether the refrigerant and the system have problems, the main body of the liquid viewing mirror is made of brass casting, the two ends are connected with the pipeline by welding copper pipes or threads, and also directly mounted on the pipeline or on a dry filter, the upper part of the liquid viewing mirror is mounted with a mirror plate, the mirror plate is mounted with a lens and a color indicating plate, the state of the refrigerant in the pipeline can be seen through the lens, the color indicating plate indicates the content of water in the refrigerant or the refrigeration oil, the color which can be used by different manufacturers can be different, and has two basic functions: displaying the moisture content of the refrigerant or the refrigeration oil; the state of the refrigerant at the mounting point of the liquid-viewing mirror is displayed.

The liquid sight glass has higher pressure in a normal working state, the requirements on air tightness and pressure resistance are higher, performance detection needs to be carried out on the liquid sight glass before delivery, air pressure detection is carried out mainly in an underwater air injection mode at present, no special air tightness and pressure resistance detection device for the liquid sight glass exists at present, and for standardization of detection, the liquid sight glass air tightness and pressure resistance detection equipment is provided.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a liquid sight glass air-tight and pressure-resistant performance detection device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an airtight and resistance to pressure performance check out test set of sight glass, includes the base, and the last fixed surface of base is connected with transparent storage water tank, and the upper shed of storage water tank articulates there is the case lid board, and the lower surface of case lid board is provided with sealed storage water tank upper shed's rubber sealing strip, the inside of base is provided with the aspiration pump, and the inside of storage water tank is provided with holds layer board and holder, and the interior back wall fixedly connected with of storage water tank sweeps the shower nozzle, and the input fixedly connected with negative pressure straw of aspiration pump, the lateral wall that the one end that the aspiration pump was kept away from to the negative pressure straw runs through the storage water tank to extend to the inside top of leaning on of storage water tank, the air pump is the holder air feed, holds the last fixed surface of layer board and is connected with the joint piece, and the joint recess has been seted up on the surface of joint piece, sight glass places in the joint recess, and the holder is pressed from both ends opening of sight glass tightly and to its inside gas injection.

Preferably, a supporting air bag is fixedly installed between the inner bottom wall of the water storage tank and the containing supporting plate, the supporting air bag is cylindrical, a steel wire ring is embedded in the side wall of the supporting air bag, and the surface of the supporting air bag is corrugated.

Preferably, the inner diapire fixedly connected with guide post of storage water tank holds the layer board and has seted up the round hole, will hold layer board slidable mounting on the surface of guide post through the round hole, and guide post fixed surface is connected with two stoppers that set up from top to bottom.

Preferably, the suction pump also supplies air to the support airbag.

Preferably, the top end of the guide post is provided with an air passage hole extending downwards, the surface of the guide post is provided with a middle pipe communicated with the air passage hole, and one end of the middle pipe, which is far away from the guide post, is communicated with the support air bag.

Preferably, the holder includes left end cap and right end cap, and left end cap rotates and installs on the left side wall of storage water tank to extend to the outside and install the turning handle, and the side of right end cap is provided with the telescopic link, and the telescopic link includes the outer tube of fixed mounting on the right side wall of storage water tank, and sliding connection has rotatable core bar in the outer tube, and the one end and the right end cap fixed connection of core bar, the other end fixedly connected with spacing dish of core bar are provided with the spring between spacing dish and the outer tube, and the intercommunicating pore has been seted up to the terminal surface of spacing dish, the intercommunicating pore transversely extends and runs through to the left end face of right end cap, and the side fixedly connected with surge chamber of storage water tank, spacing dish set up in the surge chamber.

Preferably, the inner wall of the base is provided with a pressure storage cavity, the output end of the air pump is connected with the pressure storage cavity in series, the pressure storage cavity supplies air to the pressure stabilizing chamber, and the surface of the pressure stabilizing chamber is fixedly connected with an air pressure gauge.

Preferably, the inner bottom wall of the water storage tank is fixedly connected with a limiting shell, a water flow hole is formed in the surface of the limiting shell, a compensation air bag is arranged on the inner wall of the limiting shell and is communicated with the pressure storage cavity, a one-way valve is arranged at the communication position of the compensation air bag and the pressure storage cavity, a valve is arranged on the limiting shell, the input end and the output end of the valve are respectively communicated with the compensation air bag and the blowing nozzle, and a control knob of the valve extends to the outside of the water storage tank.

Preferably, the pressure storage cavity is rotatably provided with a rotating shaft, one end of the rotating shaft is fixedly connected with a pneumatic fan blade, the pneumatic fan blade faces to an air outlet of the pressure storage cavity, the surface of the rotating shaft is fixedly connected with a magnet, a power generation coil is embedded in the inner wall of the pressure storage cavity, a light emitting lamp strip is fixedly connected to the inner bottom wall of the water storage tank, and the power generation coil is electrically communicated with the light emitting lamp strip.

The invention has the following beneficial effects:

1. this look liquid mirror is airtight and resistance to pressure performance check out test set, bleed to the storage water tank through setting up the aspiration pump, air injection after the pressurization looks in the liquid mirror, look in the liquid mirror soaks in water, if have sealed and withstand voltage defect, leak gas in water, can discover the bubble directly perceived, realize the purpose that detects, form the negative pressure in the testing process storage water tank, inhale tightly sealed with the case lid board, and atmospheric pressure reduces, the bubble of leaking gas will be big under than the ordinary pressure environment, the quick come-up surface of water, easily discover, even the bubble of small gas leakage, also can realize enlargeing, solve the difficult problem of discovering of small gas leakage, guarantee the accuracy that detects, make the detection more directly perceived swift.

2. This look airtight and withstand voltage performance check out test set of liquid mirror, through setting up the support gasbag, after the air of aspiration pump extraction storage water tank inner wall, support the gasbag shrink, it moves down to hold the layer board, will look in the automatic immersion water of liquid mirror, detect and accomplish, get rid of the negative pressure of storage water tank, support the automatic inflation of gasbag, will hold the layer board jack-up, make and look the liquid mirror and break away from the liquid level line, make things convenient for the staff to change next and look the liquid mirror, the hand need not stretch into in the water, protect staff's hand, especially winter, it is more comfortable, avoid receiving cold influence work, be favorable to keeping normal work efficiency.

3. This airtight and withstand voltage performance check out test set of sight glass, use with supporting the gasbag cooperation through setting up the compensation gasbag, support the gasbag shrink back, the volume diminishes, the liquid surface line moves down, it can not be soaked by water completely probably to cause the sight glass, set up the compensation gasbag after, the compensation gasbag inflation, the shrink volume of supplementary support gasbag, make the liquid surface line keep original position, realize the effect of soaking completely, and the compensation gasbag has certain atmospheric pressure, accomplish and detect the back, the compensation gasbag is from blowing down the shower nozzle gassing, blow down to the moisture content on sight glass surface, get rid of unnecessary water, guarantee that staff's both hands can not glue water, further realize preventing that the hand from being frostbitten.

4. This look airtight and withstand voltage performance check out test set of liquid glasses through setting up left end cap and right end cap, after the steady voltage incasement pours into high-pressure gas into, promote spacing dish, make the mouth of pipe of right end cap top tight look liquid glasses, simultaneously, high-pressure gas is looked the liquid glasses by the injection of core bar in, discharge and look a part of water in the liquid glasses, make and look to have the air in the liquid glasses, leak the bubble when conveniently detecting, will look the liquid glasses at left end cap and right end cap and press from both sides tight back, rotate left end cap, can rotate the sight glass and watch, conveniently detect each face of sight glass.

5. This airtight and withstand voltage performance check out test set of sight glass through setting up light emitting lamp area and pneumatic fan blade, at the testing process, stores up pressure chamber exhaust air, and pneumatic fan blade drives magnet and rotates, makes the generating coil cutting magnetic field produce the electric current to make light emitting lamp area lighted, be favorable to people to watch bubble under the water level in the storage water tank, the indirect staff of telling is adding pressure gas injection and detection, prevents the maloperation, reminds to pay attention to safety.

Drawings

FIG. 1 is a schematic view of the internal structure of the apparatus according to the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a schematic structural view of the holding supporting plate of the present invention after being pushed out of the liquid level;

FIG. 4 is a schematic perspective view of a holding pallet according to the present invention;

FIG. 5 is a schematic structural view of the right plug and the outer sleeve according to the present invention;

fig. 6 is a schematic perspective view of a limiting housing according to the present invention.

In the figure: the device comprises a base 1, a water storage tank 2, a box cover plate 3, an air pump 4, a holding supporting plate 5, a blowing nozzle 6, a negative pressure suction pipe 7, a clamping block 8, a liquid viewing mirror 9, a supporting air bag 10, a guide post 11, an air channel hole 12, a left plug 13, a right plug 14, an outer sleeve 15, a core rod 16, a limiting disc 17, a spring 18, a pressure stabilizing chamber 19, a pressure storage cavity 20, a limiting shell 21, a compensation air bag 22, a valve 23, a pneumatic fan blade 24, a magnet 25, a power generation coil 26, a light-emitting lamp belt 27 and a liquid surface line 28.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, an airtight and pressure resistance detection device for a liquid viewing mirror comprises a base 1, a transparent water storage tank 2 is fixedly connected to the upper surface of the base 1, a tank cover plate 3 is hinged to the upper opening of the water storage tank 2, a rubber sealing strip for sealing the upper opening of the water storage tank 2 is arranged on the lower surface of the tank cover plate 3, an air suction pump 4 is arranged inside the base 1, a containing support plate 5 and a clamp holder are arranged inside the water storage tank 2, a purging nozzle 6 is fixedly connected to the inner rear wall of the water storage tank 2, a negative pressure suction pipe 7 is fixedly connected to the input end of the air suction pump 4, one end, far away from the air suction pump 4, of the negative pressure suction pipe 7 penetrates through the side wall of the water storage tank 2 and extends to the upper side inside of the water storage tank 2, the air suction pump 4 supplies air to the clamp holder, a clamping block 8 is fixedly connected to the upper surface of the containing support plate 5, a clamping groove is formed in the surface of the clamping block 8, and the liquid viewing mirror 9 is placed in the clamping groove, the clamper clamps the two end openings of the sight glass 9 and injects air into the interior thereof.

A supporting air bag 10 is fixedly arranged between the inner bottom wall of the water storage tank 2 and the containing supporting plate 5, the supporting air bag 10 is cylindrical, a steel wire ring is embedded in the side wall of the supporting air bag 10, the surface of the supporting air bag 10 is corrugated, and the supporting air bag 10 can contract and expand in the vertical direction.

Inner diapire fixedly connected with guide post 11 of storage water tank 2 holds layer board 5 and has seted up the round hole, will hold layer board 5 slidable mounting on the surface of guide post 11 through the round hole, and guide post 11 fixed surface is connected with the stopper that sets up about two.

In this embodiment, aspiration pump 4 still is the air feed of support gasbag 10 through the connecting tube, this and for above-mentioned holder air feed are synchronous, bleed to storage water tank 2 through setting up aspiration pump 4, air injection after the pressurization is looked in liquid mirror 9, look in liquid mirror 9 soaks in water, if have sealed and withstand voltage defect, leak gas in water, can directly perceivedly discover the bubble, realize the purpose of detection, form the negative pressure in the testing process storage water tank 2, inhale box cover plate 3 tightly, it is sealed, and atmospheric pressure reduces, the bubble of leaking gas will be big under the normal pressure environment, the surface of water floats fast, easily discover, even the bubble of small gas leakage, also can realize enlargeing, solve the difficult problem of discovering of small gas leakage, guarantee the accuracy that detects, it is more directly perceived swift to make the detection.

This application still makes further transformation to the holder, proposes the following scheme:

the top end of the guide post 11 is provided with an air passage hole 12 extending downwards, the surface of the guide post 11 is provided with a middle pipe communicated with the air passage hole 12, one end of the middle pipe far away from the guide post 11 is communicated with the supporting air bag 10, and air in the supporting air bag 10 can be discharged from the air passage hole 12 and enters the upper space of the water storage tank 2.

The holder comprises a left plug 13 and a right plug 14, the left plug 13 is rotatably installed on the left side wall of the water storage tank 2 and extends to the outside to be provided with a rotating handle, the side face of the right plug 14 is provided with a telescopic rod, the telescopic rod comprises an outer sleeve 15 fixedly installed on the right side wall of the water storage tank 2, a rotatable core rod 16 is connected in the outer sleeve 15 in a sliding mode, one end of the core rod 16 is fixedly connected with the right plug 14, the other end of the core rod 16 is fixedly connected with a limiting disc 17, a spring 18 is arranged between the limiting disc 17 and the outer sleeve 15, a communicating hole is formed in the end face of the limiting disc 17 and transversely extends to the left end face of the right plug 14, a pressure stabilizing chamber 19 is fixedly connected to the side face of the water storage tank 2, the limiting disc 17 is arranged in the pressure stabilizing chamber 19, and air in the pressure stabilizing chamber 19 can enter from the communicating hole and is discharged from the left end of the right plug 14.

The inner wall of the base 1 is provided with a pressure storage cavity 20, the output end of the air pump 4 is connected with the pressure storage cavity 20 in series, the pressure storage cavity 20 supplies air for a pressure stabilizing chamber 19, and the surface of the pressure stabilizing chamber 19 is fixedly connected with an air pressure gauge.

Through setting up support gasbag 10, behind the air of 2 inside of aspiration pump 4 extraction storage water tanks, support gasbag 10 shrink, it moves down to hold layer board 5, will look in the automatic immersion water of liquid mirror 9, detect and accomplish, remove the negative pressure of storage water tanks 2, support gasbag 10 is automatic to expand, will hold layer board 5 jack-up, make and look liquid mirror 9 and break away from liquid surface line 28, make things convenient for the staff to more change next and look liquid mirror 9, the hand need not stretch into in the water, protect staff's hand, especially winter, it is more comfortable, avoid receiving cold influence work, be favorable to keeping normal work efficiency.

Through setting up left end cap 13 and right end cap 14, after injecting high-pressure gas into surge chamber 19, promote spacing dish 17, make right end cap 14 push tightly the mouth of pipe of looking at liquid mirror 9, simultaneously, high-pressure gas is looked in liquid mirror 9 by the injection of core bar 16, discharge and look a part of water in the liquid mirror 9, make and look air in the liquid mirror 9, leak bubble when conveniently detecting, after left end cap 13 and right end cap 14 press from both sides liquid mirror 9 tightly, rotate left end cap 13, can rotate and watch looking at liquid mirror 9, conveniently detect each face of liquid mirror 9.

The inner bottom wall fixedly connected with of storage water tank 2 is spacing casing 21, the rivers hole has been seted up on the surface of spacing casing 21, the inner wall of spacing casing 21 is provided with compensation gasbag 22, compensation gasbag 22 and pressure storage chamber 20 intercommunication, its intercommunication department is provided with the check valve, spacing casing 21 is provided with valve 23, the input of valve 23, the output respectively with compensation gasbag 22 with sweep shower nozzle 6 intercommunication, valve 23's control knob extends to the outside of storage water tank 2.

Through setting up compensation gasbag 22 and supporting gasbag 10 cooperation use, support gasbag 10 shrink back, the volume diminishes, liquid surface line 28 moves down, it can not be soaked by water completely to cause the sight glass 9 very likely, after setting up compensation gasbag 22, compensation gasbag 22 inflation, the shrink volume of supplementary support gasbag 10, make liquid surface line 28 keep original position, realize the effect of soaking completely, and compensation gasbag 22 has certain atmospheric pressure, accomplish and detect the back, compensation gasbag 22 is from blowing 6 gassing of shower nozzle, blow and sweep the moisture content on sight glass 9 surface, get rid of unnecessary water, guarantee that staff's both hands can not the glue, further realize preventing that the hand from being frostbitten.

It should be noted that the compensation air bag 22 is exhausted by the blowing nozzle 6, so that the air pressure in the water storage tank 2 is increased, the effect of "relieving the negative pressure of the water storage tank 2" is realized, and the tank cover plate 3 is convenient to open.

The rotating shaft is installed in the pressure storage cavity 20 in a rotating mode, one end of the rotating shaft is fixedly connected with a pneumatic fan blade 24, the pneumatic fan blade 24 faces an air outlet hole of the pressure storage cavity 20, the surface of the rotating shaft is fixedly connected with a magnet 25, a power generation coil 26 is embedded in the inner wall of the pressure storage cavity 20, a light emitting lamp strip 27 is fixedly connected to the inner bottom wall of the water storage tank 2, and the power generation coil 26 is electrically communicated with the light emitting lamp strip 27.

Through setting up light emitting lamp area 27 and pneumatic fan blade 24, in the testing process, the air of pressure storage chamber 20 exhaust, pneumatic fan blade 24 drives magnet 25 and rotates, makes power coil 26 cutting magnetic field produce the electric current to make light emitting lamp area 27 lighted, be favorable to people to watch the bubble under the water level in the storage water tank 2, and the indirect staff of telling, pressurization gas injection and detection prevent the maloperation, remind to pay attention to safety.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.