CN107884142A - It is a kind of can be with the equipment and application method of automatic detection exhaust manifold air-tightness - Google Patents

It is a kind of can be with the equipment and application method of automatic detection exhaust manifold air-tightness Download PDF

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Publication number
CN107884142A
CN107884142A CN201711124609.XA CN201711124609A CN107884142A CN 107884142 A CN107884142 A CN 107884142A CN 201711124609 A CN201711124609 A CN 201711124609A CN 107884142 A CN107884142 A CN 107884142A
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CN
China
Prior art keywords
exhaust manifold
breadth
slideway
detection
length
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Granted
Application number
CN201711124609.XA
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Chinese (zh)
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CN107884142B (en
Inventor
戚海冰
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Dongxing Sifeng Seafood Industry Co., Ltd
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Guangxi Province Nanning City Guierchuang Environmental Protection Technology Co Ltd
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Application filed by Guangxi Province Nanning City Guierchuang Environmental Protection Technology Co Ltd filed Critical Guangxi Province Nanning City Guierchuang Environmental Protection Technology Co Ltd
Priority to CN201711124609.XA priority Critical patent/CN107884142B/en
Publication of CN107884142A publication Critical patent/CN107884142A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2815Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/025Details with respect to the testing of engines or engine parts

Abstract

The invention provides it is a kind of can be with the equipment and application method of automatic detection exhaust manifold air-tightness, including detection car, starter and alarm;Detection car three face is provided with a plurality of slideway in length and breadth, inwardly stretches out multiple clamping devices from the slideway in length and breadth, and with the sealing device for hooking pawl;The clamping device and sealing device are connected with power set respectively, and the power set afterbody moves on slideway in length and breadth through slideway in length and breadth described;The detection car is provided with automatic water filling pipe fitting and automatic gas transmission pipe fitting;The starter and alarm are arranged on the outside of detection car, and control system is connected by sensor;Described clamping device is additionally provided with stepper motor.Mode of the invention using high pressure compressing infiltration examines manifold air-tightness, can be made adjustment automatically according to the difference of examined manifold, advantage intuitively obvious with Detection results, more suitable to all kinds of machines of automobile gas exhausting manifold branch one.

Description

It is a kind of can be with the equipment and application method of automatic detection exhaust manifold air-tightness
Technical field
The invention belongs to technical field of automobile parts, be related to it is a kind of can be with the equipment of automatic detection exhaust manifold air-tightness And application method.
Background technology
Exhaust manifold, it is connected with automobile engine cylinder body, it is total that the waste gas that each cylinder is discharged is put together into importing exhaust Pipe, the conduit with tap line.The common practice of current each engine production manufacturer is all by for used in cleaning of off-gas Ternary catalyzing unit is encapsulated in exhaust manifold, if exhaust manifold air-tightness is bad, vehicle exhaust will not only pollute vehicle body, is reduced In the automobile exhaust system life-span, atmospheric environment can more seriously be polluted.Be required to after the completion of exhaust manifold finished product by Air tight test, in the prior art, exhaust manifold is detected a flaw using radiation defect-detecting equipment, or utilize closure branch Pipe, compressed air is added, observe the way detection exhaust manifold air-tightness of pressure change.But radiation injury risk be present in the former, And higher is required to operating personnel's specialized capability;The latter is fixed by obturator position and quantity to be influenceed, and single device is general It is merely able to examine a kind of exhaust manifold air-tightness of number of cylinders series, flexibility is poor, and can not be accurately judged to specifically leak Point, influences using effect.
The content of the invention
To solve the above problems, the invention provides it is a kind of can be with the equipment of automatic detection exhaust manifold air-tightness, this sets It is standby to detect vehicle engine exhaust divided manifold air-tightness, moreover it is possible to intuitively to mark leakage point, and be applicable effective and safe In the detection of various engines exhaust manifold, the automation of automobile gas exhausting manifold branch air-leakage test in process of production is realized. The present invention examines its air-tightness using the mode of high pressure compressing infiltration, simple to operate, positive effect of hunting leak, and applicability is wide, fits Close the detection of all kinds of common exhaust manifold air-tightness.
In order to realize foregoing invention purpose, technical scheme is as follows:
The present invention for it is a kind of can be with the equipment of automatic detection exhaust manifold air-tightness, including detection car, starter and alarm;Institute State detection car three face and be provided with a plurality of slideway in length and breadth, inwardly stretch out multiple clamping devices from the slideway in length and breadth, and with hook pawl Sealing device;The clamping device and sealing device are connected with power set respectively, and the power set afterbody runs through to be slided in length and breadth Road, moved in length and breadth on slideway described;The detection car is provided with automatic water filling pipe fitting and automatic gas transmission pipe fitting;The starter and Alarm is arranged on the outside of detection car, and control system is connected by sensor;Described clamping device is additionally provided with stepper motor.This The mobile adjustment of clamping device and sealing device is realized in invention by slideway in length and breadth, can carry out clamping to different type exhaust manifold And sealing, the mode that infiltration is oppressed using high pressure examine its air-tightness.
Further, the power set include hydraulic jack one and hydraulic jack two;The hydraulic jack one is with clamping Device is connected, and the hydraulic jack two is connected with sealing device;The clamping device is arranged on detection car and corresponded on two sides;Institute Sealing device is stated to be arranged on the detection car back side;The stepper motor is placed in the push rod end of hydraulic jack one, rotor connection Clamping device.By the flexible drive of the hydraulic jack one and the push rod of hydraulic jack two, the clamping device and sealing are realized Device is clamped and sealed to exhaust manifold to be measured;Reached by the stepper motor adjustable gripping device and be adapted to angle, It is easy to clamp exhaust manifold.
Further, described slideway in length and breadth divides end slipway and transverse slipway staggeredly to communicate, described to be set in length and breadth in slideway Pulley and motor.The slideway in length and breadth by control system, can coordinate the rotation of the pulley and motor, realize power set Horizontal and vertical movement.
Further, the sealing device includes support limit stop, screw rod, sealing plate, chute block and hooks pawl;The support Block is connected with the push rod of hydraulic jack two;Tapped through hole is provided among the chute block;The screw rod connection sealing plate is simultaneously Through the tapped through hole of chute block;The afterbody for hooking pawl links chute block, is moved on the chute block;The hook The pawl head bending direction of pawl is vertical with the screw motion direction;One layer of rubber blanket is fixed on the sealing plate;The sealing plate Edge output four and run through groove.Sealing plate is released and arrives suitable position by the push rod of the hydraulic jack two, and the hook pawl can Moved on the chute of chute block, with according to the different exhaust manifolds adjustment hook pawl openings of sizes, the pawl head for hooking pawl Exhaust manifold mouth of pipe flank, then rotary screw pinch seal plate are caught on, and runs through groove and exhaust manifold branch by described in screw Mouth flank connection, is finally tightened nut, is deformed upon using rubber blanket to strengthen sealing effectiveness so as to which exhaust manifold be fully sealed Each mouth of pipe.
Further, the detection underbody face is provided with tank, and support base, the support base are fixed with the tank Height be slightly above the height of tank;Magnet coil is equipped with inside the clamping device and support base.The tank is connected to Drainpipe, for accepting and discharging detection water;The magnet coil forms electromagnet after being powered, for holding exhaust during clamping Manifold, tentatively to fix and to adjust exhaust manifold.
Further, the automatic gas transmission inside pipe fitting is provided with high power heater strip and relief valve;The starter and report Alert device is provided with boom unit;The sensor is pressure sensor, and the control system is PLC control system.The high power Heater strip can heated compressed air, formed hot blast;The relief valve is put for completing the laggard luggage of exhaust manifold air-leakage test High pressure relief;The pressure sensor is used to sense pressure change in exhaust manifold, and connects the PLC control system, when When pressure decline exceeds limit value, triggering buzzing alarm.
The application method of the present invention comprises the following steps:
1)Clamp:When clamping exhaust manifold to be measured, the clamping device detected on car one side extends suitable position, by exhaust to be measured After manifold mouth of pipe is uprightly put into support base inwardly, it is powered inside clamping device, support base, opens electromagnet, hold Exhaust manifold, tentatively to fix exhaust manifold to be measured;After adjusting exhaust manifold, the clamping device of detection car opposite side passes through Stretched out after exhaust manifold correspondence position to be measured is moved on slideway in length and breadth, while clamping device can be adjusted by stepper motor and reached To suitable angle, it is easy to clamp the full manifold of exhaust to be measured.
2)Sealing:The sealing device of respective numbers is selected according to the specification shape of exhaust manifold, sealing device is being slided in length and breadth After exhaust manifold branch mouth correspondence position is moved on road, under the promotion of the push rod of hydraulic jack two, sealing plate is stretched out, makes sealing plate Close to exhaust manifold;Again by rotary screw, forward extend out sealing plate, until the rubber blanket on sealing plate withstands exhaust manifold Each branch mouth, then adjusted by chute block and hook pawl openings of sizes, pinch seal plate and exhaust manifold, finally will pass through with screw Groove and the connection of exhaust manifold branch mouth flank, and nut is tightened, strengthen sealing effectiveness.
3)Detection:Automatic water filling pipe fitting connects with exhaust manifold supervisor, and the water filling into exhaust manifold, stops after filling water Water filling, switch to automatic gas transmission pipe fitting to be responsible for exhaust manifold and be connected, compressed air is added into exhaust manifold supervisor;Work as exhaust Discrimination overpressure stops adding compressed air after reaching certain high value;If leaking, starter and alarm pass through pressure Force snesor senses that pressure declines and exceed setting range, then can buzzing alarm, and mark leakage point, be now also clearly visible Exhaust manifold surface has water to be oozed out from leakage point;Starter and alarm are alarmed without buzzing, then product is qualified;
4)Drying:After completing leak detection, relief valve pressure release is opened, discharges the water in exhaust manifold, starts high power heater strip, to row Hot blast is blown into gas manifold, dries Residual water.
Compared with prior art, advantages of the present invention:
1. can be suitably used for the detection of a variety of different size shape enmgine exhaust air-tightness, an equipment is not limited to detect A kind of exhaust manifold air-tightness, it is flexible and changeable, it is workable.
2. vertical clamping manifold to be measured, air-tightness is judged by pressure change and infiltration situation, leak point shows intuitively, inspection It is more accurate to survey result.
3. clamping and sealing device displacement operation can realize automatically controlled, automaticity height.
4. being provided with blow-dry device, it is easy to the next REPAIR WELDING to exhaust manifold, storage transport etc..
5. the present invention examines exhaust manifold air-tightness using the mode of high pressure compressing infiltration, simple to operate, leak detection effect is bright It is aobvious, and applicability is wide, is adapted to the detection of all kinds of common exhaust manifold air-tightness.
Brief description of the drawings
Fig. 1 is the positive side schematic view of structure of the present invention.
Fig. 2 is structured rear surface schematic diagram of the present invention.
Fig. 3 is clamping device profile.
Fig. 4 is sealing device schematic diagram.
Fig. 5 is sealing plate structure signal.
Fig. 6 is automatic gas transmission pipe fitting profile.
Parts title and sequence number in figure:
Detect car 1, starter and alarm 2, automatic gas transmission pipe fitting 3, hydraulic jack 1, clamping device 5, hydraulic jack 26, Sealing device 7, automatic water filling pipe fitting 8, tank 9, in length and breadth support base 10, slideway 11, support limit stop 12, screw rod 13, sealing plate 14th, chute block 15, hook pawl 16, rubber blanket 17, through groove 18, high power heater strip 19, relief valve 20, stepper motor 21.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Embodiment one:
It is a kind of can be with the equipment of automatic detection exhaust manifold air-tightness, including detection car 1, starter and alarm 2;The detection The face of car 1 three is provided with a plurality of slideway 11 in length and breadth, and the slideway in length and breadth 11 inwardly stretches out multiple clamping devices 5, and with hook pawl 16 Sealing device 7;The clamping device 5 and sealing device 7 are connected with power set respectively, and the power set afterbody is through in length and breadth Slideway 11, moved on the slideway in length and breadth 11;The detection car 1 is provided with automatic water filling pipe fitting 8 and automatic gas transmission pipe fitting 3;Institute State starter and device alarm 2 is arranged on the outside of detection car, control system is connected by sensor.The power set include liquid Compressing cylinder 1 and hydraulic jack 26;The hydraulic jack 1 is connected with clamping device 5, and the hydraulic jack 26 fills with sealing Put 7 connections;The clamping device is arranged on the corresponding two sides of detection car 1;The sealing device 7 is arranged on detection car 1 back side On;Described clamping device 5 is additionally provided with stepper motor 21.Phase that described slideway in length and breadth 11 divides end slipway and transverse slipway interlocks It is logical, set pulley and motor in the slideway in length and breadth 11.The sealing device 7 include support limit stop 12, screw rod 13, sealing plate 14, Chute block 15 and hook pawl 16;The support limit stop 12 is connected with the push rod of hydraulic jack 26;Set among the chute block 15 There is tapped through hole;The screw rod 13 connects sealing plate 14 and passes through the tapped through hole of chute block 15;The afterbody for hooking pawl 16 Chute block 15 is linked, is moved on the chute block 15;The pawl head bending direction for hooking pawl 16 is transported with the screw rod 13 Dynamic direction is vertical;One layer of rubber blanket 17 is fixed on the sealing plate 14;The edge of the sealing plate 14 outputs four and runs through groove 18.The stepper motor 21 is placed in the push rod end of hydraulic jack 1, rotor connection clamping device 5.Detection car 1 bottom Face is provided with tank 9, and support base 10 is fixed with the tank 9, and the height of the support base 10 is slightly above the height of tank 9 Degree.The starter and alarm 2 are provided with boom unit;The sensor is pressure sensor, and the control system is controlled for PLC System processed.
The application method of the equipment is as follows:
During clamping exhaust manifold to be measured, the clamping device 5 detected on 1 one sides of car extends suitable position, by exhaust discrimination to be measured Pipe mouth of pipe is uprightly put into support base 10 inwardly, and after adjusting exhaust manifold, the clamping device 5 of the detection opposite side of car 1 is logical Cross after exhaust manifold correspondence position to be measured is moved on slideway 11 in length and breadth and stretch out, while can be adjusted and clamped by stepper motor 21 Device reaches suitable angle, is easy to clamp the full manifold of exhaust to be measured.According to the specification shape of exhaust manifold from respective numbers Sealing device 7, sealing device 7 push away after exhaust manifold branch mouth correspondence position is moved on slideway 11 in length and breadth in hydraulic jack 26 Under the promotion of bar, stretch out sealing plate 14, make sealing plate 14 close to exhaust manifold, then by rotary screw 13, make sealing plate 14 to Preceding stretching, until the rubber blanket 17 on sealing plate 14 withstands each branch mouth of exhaust manifold, then adjusted by chute block 15 and hook pawl 16 openings of sizes, pinch seal plate 14 and exhaust manifold, it finally will pass through groove 18 with screw and exhaust manifold branch mouth flank connect, And nut is tightened, strengthen sealing effectiveness.Automatic water filling pipe fitting 8 and exhaust manifold supervisor are connected again, and noted into exhaust manifold Water, stop water filling after filling water, switch to automatic gas transmission pipe fitting 3 to be responsible for exhaust manifold and be connected, Nei Jia is responsible for exhaust manifold Enter compressed air;Stop adding compressed air after pressure reaches certain high value in exhaust manifold;If leaking, start Device and alarm 2 sense that pressure declines by pressure sensor and exceed setting range, then can buzzing alarm, and mark leakage Point, being now also clearly visible exhaust manifold surface has water to be oozed out from leak point;Starter and alarm 2 are alarmed without buzzing, then Product is qualified.
Embodiment two:
The present embodiment two is essentially identical with the structure of embodiment one and principle, the difference is that the clamping device 5 and support base 10 Inside is provided with magnet coil.After exhaust manifold mouth of pipe to be measured is uprightly put into support base 10 inwardly, clamping device 5, branch Support the internal electro-solenoid of base 10 to be powered, form electromagnet, hold exhaust manifold, tentatively to fix exhaust manifold to be measured.
Embodiment three:
The present embodiment three is essentially identical with the structure of embodiment one and principle, the difference is that the automatic inside of gas transmission pipe fitting 3 is provided with High power heater strip 19 and relief valve 20.After completing leak detection, relief valve pressure release 20 is opened, discharges the water in exhaust manifold, is started High power heater strip 19, hot blast is blown into exhaust manifold, dries Residual water.
Example IV:
The present embodiment four is essentially identical with the structure of embodiment one and principle, the difference is that the clamping device 5 and support base 10 Inside is provided with magnet coil;After exhaust manifold mouth of pipe to be measured is uprightly put into support base 10 inwardly, clamping device 5, branch Support the internal electro-solenoid of base 10 to be powered, form electromagnet, hold exhaust manifold, tentatively to fix exhaust manifold to be measured.Institute State the automatic inside of gas transmission pipe fitting 3 and be provided with high power heater strip 19 and relief valve 20.After completing leak detection, relief valve pressure release 20 is opened, The water in exhaust manifold is discharged, starts high power heater strip 19, hot blast is blown into exhaust manifold, dries Residual water.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.

Claims (7)

1. a kind of can be with the equipment of automatic detection exhaust manifold air-tightness, it is characterised in that:Including detecting car(1), starter and Alarm(2);The detection car(1)Three faces are provided with a plurality of slideway in length and breadth(11), from the slideway in length and breadth(11)Inwardly stretch out more Individual clamping device(5), and with hook pawl(16)Sealing device(7);The clamping device(5)And sealing device(7)Respectively with Power set are connected, and the power set afterbody is through slideway in length and breadth(11), in the slideway in length and breadth(11)Upper movement;The inspection Measuring car(1)Provided with automatic water filling pipe fitting(8)And automatic gas transmission pipe fitting(3);The starter and alarm(2)It is arranged at detection car Outside, control system is connected by sensor;Described clamping device(5)It is additionally provided with stepper motor(21).
A kind of 2. equipment of automatic detection exhaust manifold air-tightness according to claim 1, it is characterised in that:The power Device includes hydraulic jack one(4)And hydraulic jack two(6);The hydraulic jack one(4)With clamping device(5)Connection, it is described Hydraulic jack two(6)With sealing device(7)Connection;The clamping device(5)It is arranged on detection car(1)On corresponding two sides;Institute State sealing device(7)It is arranged on detection car(1)On the back side;The stepper motor(21)It is placed in hydraulic jack one(4)Push rod end In end, rotor connection clamping device(5).
A kind of 3. equipment of automatic detection exhaust manifold air-tightness according to claim 1, it is characterised in that:Described is vertical Sideslip road(11)End slipway and transverse slipway is divided staggeredly to communicate, the slideway in length and breadth(11)Inside set pulley and motor.
A kind of 4. equipment of automatic detection exhaust manifold air-tightness according to claim 2, it is characterised in that:The sealing Device(7)Including support limit stop(12), screw rod(13), sealing plate(14), chute block(15)And hook pawl(16);The support block Block(12)With hydraulic jack two(6)Push rod be connected;The chute block(15)Centre is provided with tapped through hole;The screw rod(13) Connect sealing plate(14)And pass through chute block(15)Tapped through hole;The hook pawl(16)Afterbody link chute block (15), in the chute block(15)Upper movement;The hook pawl(16)Pawl head bending direction and the screw rod(13)Motion side To vertical;The sealing plate(14)On fix one layer of rubber blanket(17);The sealing plate(14)Edge output four and run through Groove(18).
A kind of 5. equipment of automatic detection exhaust manifold air-tightness according to claim 1, it is characterised in that:The detection Car(1)Bottom surface is provided with tank(9), the tank(9)Inside it is fixed with support base(10), the support base(10)Height omit Higher than tank(9)Height;The clamping device(5)And support base(10)Inside is equipped with magnet coil.
A kind of 6. equipment of automatic detection exhaust manifold air-tightness according to claim 1, it is characterised in that:It is described automatic Gas transmission pipe fitting(3)Inside is provided with high power heater strip(19)And relief valve(20);The starter and alarm(2)Provided with buzzing Device;The sensor is pressure sensor, and the control system is PLC control system.
7. a kind of application method of the equipment of automatic detection exhaust manifold air-tightness according to claim any one of 1-7, It is characterized in that:Comprise the following steps:
1)Clamp:When clamping exhaust manifold to be measured, car is detected(1)Clamping device on one side(5)Suitable position is extended, is adjusted After good exhaust manifold, car is detected(1)The clamping device of opposite side(5)By in slideway in length and breadth(11)On be moved to exhaust discrimination to be measured Stretched out after pipe correspondence position and clamp exhaust manifold;
2)Sealing:The sealing device of respective numbers is selected according to the specification shape of exhaust manifold(7), sealing device(7)In length and breadth It is moved to exhaust manifold branch mouth correspondence position on slideway (11), power set are by sealing device(7)Release, with exhaust manifold branch mouth Clamp and realize sealing;
3)Detection:Automatic water filling pipe fitting(8)It is responsible for and connects with exhaust manifold, and the water filling into exhaust manifold, stop after filling water Water filling, switch to automatic gas transmission pipe fitting(3)Supervisor is connected with exhaust manifold, and compressed air is added into exhaust manifold supervisor;When Pressure stops adding compressed air after reaching certain high value in exhaust manifold;If leaking, starter and alarm(2) Declined by sensor sensing to pressure and exceed setting range, then can alarmed, and mark leakage point, now the also row of being clearly visible Gas manifold surface has water to be oozed out from leak point;Starter and alarm(2)Alarm free, then product is qualified.
CN201711124609.XA 2017-11-08 2017-11-08 Equipment capable of automatically detecting air tightness of exhaust manifold and using method Active CN107884142B (en)

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CN107884142B CN107884142B (en) 2020-01-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109443650A (en) * 2018-12-27 2019-03-08 京信通信系统(中国)有限公司 Fiberglass radome waterproof performance test device and its test method

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CN204101242U (en) * 2014-09-15 2015-01-14 广州市番禺科腾工业有限公司 Cylinder body leak test testing agency
CN104792479A (en) * 2015-04-11 2015-07-22 成都陵川特种工业有限责任公司 Exhaust manifold airtightness detection tool
CN106404315A (en) * 2016-08-25 2017-02-15 河南飞龙(芜湖)汽车零部件有限公司 Leakage test clamp for exhausting manifold
CN106840535A (en) * 2016-12-19 2017-06-13 重庆市锋盈汽车配件有限公司 Engine cylinder-body flaw detection device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060075804A1 (en) * 2004-10-12 2006-04-13 Kang Hsin F Engine water cooling system leaking tester
CN203132795U (en) * 2013-02-05 2013-08-14 柳州恒耀汽车零部件有限公司 Exhaust-manifold water inspection machine
CN204101242U (en) * 2014-09-15 2015-01-14 广州市番禺科腾工业有限公司 Cylinder body leak test testing agency
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109443650A (en) * 2018-12-27 2019-03-08 京信通信系统(中国)有限公司 Fiberglass radome waterproof performance test device and its test method
CN109443650B (en) * 2018-12-27 2020-11-06 京信通信技术(广州)有限公司 Glass fiber reinforced plastic radome waterproof performance testing device and testing method thereof

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Effective date of registration: 20201125

Address after: No.40 Binhu Road, Dongxing City, Fangchenggang City, Guangxi Zhuang Autonomous Region

Patentee after: Dongxing Sifeng Seafood Industry Co., Ltd

Address before: Haotian square No. 24, Qingxiu District, Nanning City 530000 the Guangxi Zhuang Autonomous Region 1218

Patentee before: GUANGXI NANNING GUIERCHUANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd.