CN110514525A - A kind of interior pressure comparative test device - Google Patents

A kind of interior pressure comparative test device Download PDF

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Publication number
CN110514525A
CN110514525A CN201910805052.9A CN201910805052A CN110514525A CN 110514525 A CN110514525 A CN 110514525A CN 201910805052 A CN201910805052 A CN 201910805052A CN 110514525 A CN110514525 A CN 110514525A
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China
Prior art keywords
test
pressure
medium
comparative test
flow divider
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CN201910805052.9A
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Chinese (zh)
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CN110514525B (en
Inventor
马斌
张瑞敏
顾涛
周曙琛
倪桂炎
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Jiangsu Shenma Electric Power Co Ltd
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Jiangsu Shenma Electric Power Co Ltd
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Priority to CN201910805052.9A priority Critical patent/CN110514525B/en
Publication of CN110514525A publication Critical patent/CN110514525A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/04Chucks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/06Special adaptations of indicating or recording means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/06Special adaptations of indicating or recording means
    • G01N3/068Special adaptations of indicating or recording means with optical indicating or recording means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12Pressure testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0019Compressive
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0042Pneumatic or hydraulic means
    • G01N2203/0044Pneumatic means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0042Pneumatic or hydraulic means
    • G01N2203/0048Hydraulic means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/04Chucks, fixtures, jaws, holders or anvils
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/0641Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
    • G01N2203/0647Image analysis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/067Parameter measured for estimating the property
    • G01N2203/0676Force, weight, load, energy, speed or acceleration

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The present invention discloses a kind of interior pressure comparative test device, including electric-control system, media transport system, test installation system and monitoring system, electric-control system includes controller, display and pressure sensor, media transport system includes medium transfer line, medium box, pressure pump, flow divider, medium transfer line is sequentially connected medium box, pressure pump, flow divider, test product, and pressure sensor is mounted on the medium transfer line between test product and flow divider;Test installation system includes that fixed device and protective device, monitoring system are installed on the state that test product is monitored inside protective device;Controller receives the signal of pressure sensor and monitoring system, controls pressure pump and flow divider pumped (conveying) medium.The interior pressure comparative test device it is highly-safe, user can check that display observes Test condition in the region of safety, can be used for the research of explosion bulge test under pressure working condition in extreme;Pressure testing in multiple test products can be tested, working efficiency improves.

Description

A kind of interior pressure comparative test device
Technical field
The present invention relates to the tooling field of transmission of electricity insulator arrangement, specifically a kind of interior pressure comparative test devices.
Background technique
For products such as hollow insulators, interior pressure check is an important link of product export test, many at present There is pressure apparatus in simple in manufacturer, but this kind of device can only do simple delivery test to product substantially, can not The case where for testing interior pressure explosion under extreme operating condition.Be mainly due to following several respects: 1. functions of the equipments are simple, base Safety device is few when can only do single delivery test in sheet, and test, without monitoring function, so being not used to pole Hold the research of explosion bulge test under interior pressure working condition;2. the interior pressure testing of multiple products can not be carried out simultaneously, working efficiency is low.
Summary of the invention
In view of the deficiencies of the prior art, an object of the present invention is to provide a kind of interior pressure comparative test device, is used for Compare the interior pressure of at least two test products.
For achieving the above object, the technology used in the present invention means are as follows: a kind of interior pressure comparative test device, For comparing the interior pressure of at least two test products, including electric-control system, media transport system, test installation system and monitoring System, electric-control system include controller, display and pressure sensor, and media transport system includes medium transfer line, medium Case, pressure pump, flow divider, medium transfer line are sequentially connected medium box, pressure pump, flow divider, test product, medium box memory Storage media, pressure sensor are mounted on the medium transfer line between test product and flow divider;Testing installation system includes Fixed device and protective device, test product are set on fixed device, and protective device makes test product be placed in confined space, prison Control system is installed on the state that test product is monitored inside protective device;Controller receives pressure sensor and monitoring system Signal, and be transferred on display, controller controls pressure pump and flow divider pumped (conveying) medium according to signal.The interior pressure comparison The safety of experimental rig is secure, and by the protective device and installation monitoring system that installation is fixed, user can be in safety Region by checking that display observes Test condition, improve the security performance of test, can be used for pressure working condition in extreme The research of lower explosion bulge test;The interior pressure testing of multiple test products can be carried out simultaneously, and working efficiency significantly improves.
Preferably, monitoring system includes photographic device and transmitting device, and transmitting device transmits photographic device to controller Signal, photographic device outer cover are equipped with transparent protective shield.The setting of transparent protective shield is to damage in blasting experiment in order to prevent Photographic device;Transmitting device is the connection medium of photographic device and electric-control system.
Preferably, fixed device includes upper sealing plate, lower sealing plate and iron stand, and the stabilizer blade of iron stand fixes on the ground, on For sealing test product, lower sealing plate is fixedly mounted on iron stand for sealing plate and lower sealing plate, and lower sealing plate is equipped with valve, and valve connects Logical test product and medium transfer line.Iron stand is fixed with ground, it is ensured that the stability of test products;Upper sealing plate is under Sealing plate is the top and bottom for sealing test product.It wherein descends in sealing plate equipped with valve, for the medium in injection testing, Test product is set to reach certain internal pressure, the operating condition in analog equipment actual motion.
Preferably, medium is liquid.Such as using water or oil as the relevant interior pressure testing of medium progress, convenient for control System.
It is further preferable that being equipped with liquids recovery or tapping equipment in protective device.Protective device cleaning inside is kept, and And it can be to avoid the wasting of resources.
Preferably, protective device can move along base track and be securable to ground.Protective device can be perpendicular to ground Face is moved on the sliding rail with idler wheel, is adjusted, convenient for the pick-and-place of test product;When suitable position is arrived in adjusting, pass through spiral shell Mother is fixed with ground, prevents protective device from being shaken by the impact of interior pressure.
Preferably, protective device is internally provided with damping cotton.It reduces test product components and is pressed within power and hits and fly and protect The shock generated inside device.
Preferably, protective device is provided with relief valve.Pressure is excessive in order to prevent after explosion bulge test inside device, is protecting Internal pressure is controlled above protection unit equipped with relief valve, when internal pressure is excessive, relief valve, which is opened, carries out pressure adjusting.
Preferably, controller is using PLC or single-chip microcontroller, it can be achieved that the editability and automatic feedback of electric-control system and touching The characteristic of hair reduces artificial participation and control, keeps test process more accurate controllable.
In view of the deficiencies of the prior art, the second object of the present invention is to provide pressure testing in a kind of single test product Method, using above-mentioned interior pressure comparative test device.This method has widened the application range of above-mentioned interior pressure comparative test device, Make above-mentioned interior pressure comparative test device that there is versatility.
For achieving the above object, the technology used in the present invention means are as follows: single test product is installed on above-mentioned It is tested on interior pressure comparative test device.
Detailed description of the invention
Fig. 1 is the floor map of the interior pressure comparative test device 1000 of one embodiment of the invention;
Fig. 2 is the breviary relational graph of the interior pressure comparative test device 1000 of one embodiment of the invention;
Fig. 3 is the stereoscopic schematic diagram of the installation pilot system 30 of one embodiment of the invention;
Fig. 4 is the stereoscopic schematic diagram of the iron stand 3013 of one embodiment of the invention;
Fig. 5 is the local scheme of installation of the test installation system 30 of one embodiment of the invention;
Fig. 6 is the stereoscopic schematic diagram of the fixing clamp 30134 of one embodiment of the invention.
Specific embodiment
According to requiring, a specific embodiment of the invention will be disclosed here.It is to be understood, however, that described herein Embodiment be only typical example of the invention, can be presented as various forms.Therefore, what is disclosed here is specific thin Section is not to be considered as limiting, and is merely possible to the basis of claim and as instructing those skilled in the art Representative basis of the invention is differently applied in any appropriate mode in practice, including using described herein various Feature simultaneously combines the feature that may do not disclose clearly here.
Embodiment one:
As Figure 1-Figure 2, the interior pressure comparative test device 1000 of the present embodiment, for comparing at least two tested productions The interior pressure of product 50, including electric-control system 10, media transport system 20, test installation system 30 and monitoring system 40, automatically controlled system System 10 include controller 101, display 102 and pressure sensor 103, media transport system 20 include medium transfer line 201, Medium box 202, pressure pump 203, flow divider 204, medium transfer line 201 are sequentially connected medium box 202, pressure pump 203, shunt Valve 204, test product 50, storage medium in medium box 202, pressure sensor 103 are mounted on test product 50 and flow divider 204 Between medium transfer line 201 on;Testing installation system 30 includes fixed device 301 and protective device 302, test product 50 It is set on fixed device 301, protective device 302 makes test product 50 be placed in confined space, and monitoring system 40 is installed on protection The state of test product 50 is monitored inside device 302.
In the present embodiment, test product 50 is insulator 50, and insulator 50 includes insulation tube and is mounted on insulation tube two There are opening in the flange at end, two end flanges at least one end.In other embodiments, test product can be at least one end be equipped with open The product with cavity of mouth;Test product is also possible to the insulation tube of insulator.
It should be noted that being transmitted between all parts of pressure comparative test device 1000 interior in Fig. 1 by medium What pipeline 201 connected is indicated with double solid line, and the use single solid line being electrically connected by conducting wire indicates to distinguish.
In the present embodiment, controller 101 receives the signal of pressure sensor 103 and monitoring system 40, and is transferred to On display 102, display 102 can show time, image and real-time parameter, it is ensured that the synchronism of record and effectively Property.Controller 101 is situated between according to pressure sensor 103 and the signal of monitoring system 40 control pressure pump 203 and the conveying of flow divider 204 Matter.Controller 101 uses wireless signal transmission, controller 101 and pressure between pressure sensor 103 and flow divider 204 respectively Power pump 203 is using conducting wire electrical connection transmission signal;The effect of flow divider 204 is equivalent shunting or proportional diverting, controller 101 Control flow divider 204 controls the flow velocity of the medium of different pipelines in turn, adjusts the internal pressure of the different test products 50 of piping connection Power is equal, can meet under the experimental condition of identical interior pressure, the limiting pressure of more different test products 50.Fig. 2 internal pressure In the breviary relational graph of power comparative test device 1000, solid line with the arrow indicates have signal anti-between the two systems connected Infeed mechanism.Specifically, mutual signal is fed back between electric-control system 10 and media transport system 20, the controller of electric-control system 10 101 can control 204 pumped (conveying) medium of the control pressure pump 203 of media transport system 20 and flow divider, and media transport system 20 Loine pressure can feed back to the pressure sensor 103 of electric-control system 10, and then be transferred to controller 101;Monitoring system 40 Signal can be fed directly to the controller 101 of electric-control system 10.
The safety of the interior pressure comparative test device 1000 is secure, by the protective device 302 that installation is fixed, and Installation monitoring system 40, user can improve test in the region of safety by checking that display 102 observes Test condition Security performance can be used for the research of explosion bulge test under pressure working condition in extreme;The internal pressure of multiple test products 50 can be tested Power test, working efficiency significantly improve.
In the present embodiment, monitoring system 40 includes photographic device 401 and transmitting device, and transmitting device is to controller 101 The signal of photographic device 401 is transmitted, transmitting device is wireless signal transmission, and in other embodiments, transmitting device can be with For any type of signal transmitting apparatus, as long as controller 101 can be transferred to the signal of photographic device 401.Transmission dress Set be photographic device 401 Yu electric-control system 101 connection medium.
In the present embodiment, 401 outer cover of photographic device is equipped with transparent protective shield 402, transparent protective shield 402, transparent guarantor Shield 402 is tempered glass cover, and tempered glass cover both can achieve higher transparency by having good mechanical property, and be The optimal selection of bright protective cover 402.In other embodiments, transparent protective shield 402 is not limited to tempered glass cover, other are any The protective cover that protection and transparent requirement can be reached is all applied to the materials such as the present apparatus, such as high-intensitive organic glass PMMA Material.The setting of transparent protective shield 402 is to damage photographic device 401 in blasting experiment in order to prevent.
In the present embodiment, as in Figure 3-5, in conjunction with Fig. 1, fixed device 301 includes upper sealing plate 3011, lower sealing plate 3012 With iron stand 3013, iron stand 3013 is provided with mounting table 30135 and four stabilizer blades 30131, is provided on stabilizer blade 30131 logical Hole, bolt pass through through-hole and fix iron stand 3013 on the ground.In other embodiments, the fixed form of iron stand and ground It is not limited to bolt to fix, can be other any fixed forms, such as fix mode.The installation position of iron stand and ground Not necessarily stabilizer blade can have continuum to reach preferably fixed effect between stabilizer blade.It is understood that if tested produce Product only have one end to be equipped with through-hole, then upper sealing plate can not use.
In the present embodiment, for sealing test product 50, lower sealing plate 3012 is fixed for upper sealing plate 3011 and lower sealing plate 3012 It is mounted on iron stand 3013.As shown in figure 4, being additionally provided with several grooves intersected in length and breadth in mounting table 30135 30136, several the second mounting holes 30133 are provided in groove 30136, by the second mounting hole 30133, by lower sealing plate 3012 It is fixed on mounting table 30135.Specifically, the rectangular Z-shaped of fixing clamp 30134 as shown in Figure 5 and Figure 6, by first, Two and third portion form, and first, second and third portion are integrally formed, and are plate in homogeneous thickness, and first and the Three are parallel to each other, and second is mutually perpendicular to first and third portion, collectively form right angle Z-shaped, first upper setting with The compatible through-hole of second mounting hole 30133, first width are less than the width of the groove 30136 in mounting table 30135, In i.e. first groove 30136 that can be embedded in mounting table 30135.In other embodiments, second and third portion Width can be identical as first or not identical, herein with no restrictions.
In the present embodiment, test product 50 is fixed on lower sealing plate 3012, is specifically, the flange of insulator 50 is fixed On lower sealing plate 3012, the third portion fitting flange of fixing clamp 30134 is under insulating cylinder end flange disk, second fitting The side of sealing plate 3012 and the inner sidewall of the groove 30136 in mounting table 30135, third portion are embedded in mounting table 30135 Groove 30136 in, through-hole and the second mounting hole 30133 cooperate, and are bolted and fixed.The fixation of one test product 50 Four fixing clamps 30134 can be used.In other embodiments, fixing clamp 30134 can be adjusted according to the reasonable quantity of groove 30136 Number.
In the present embodiment, be provided with the first mounting hole 30132 in mounting table 30135, lower sealing plate 3012 be equipped with The corresponding through-hole of first mounting hole 30132, valve 30121 pass through the first mounting hole 30132 and are mounted on the logical of lower sealing plate 3012 Kong Shang.Valve 30121 is connected to test product 50 and medium transfer line 201, is filled by valve 30121 into test product 50 The medium of test;And valve 30121 can make the stable connection of test product 50 and medium transfer line 201, will not be because of The increase of interior pressure and Joint failure.
In the present embodiment, iron stand 3013 is fixed with ground, it is ensured that the stability of test product 50;Upper sealing plate 3011 and lower sealing plate 3012 be top and bottom for sealing test product 50, wherein being equipped with valve in lower sealing plate 3012 30121, it for the medium in injection testing, can reach certain internal pressure, simulate the work in 50 actual motion of test product Condition.
In the present embodiment, medium is water.In other embodiments, medium can be the liquid mediums such as oil, liquid medium Relevant interior pressure testing is carried out, convenient for control;Medium may be gas, such as air, nitrogen are cheap and easy to get, economic and environment-friendly Gas medium.
In the present embodiment, liquid discharge device 303 is equipped in protective device 302.It can keep inside protective device 302 Cleaning.In other embodiments, liquid withdrawal system is equipped in protective device 302, it can be to avoid the wasting of resources.
In the present embodiment, protective device 302 can move along base track 304 and be securable to ground.Protective device 302 It can move, be adjusted, convenient for the pick-and-place of test product 50 on perpendicular to sliding rail 304 of the ground with idler wheel;When adjusting is arrived It when suitable position, is fixed by nut and ground, prevents protective device from being shaken by the impact of interior pressure, others are passed through Logical face can carry out closing by the way of pulling down door curtain or the fixed mode for installing door additional is closed, and prevents explosion bulge test Cheng Zhongyou object flies out, and threatens the personal safety of testing crew.
In other embodiments, protective device can move for the fixed confined space to open the door that is equipped with, fixed device It moves inside protective device and then is being fixed.During the test, as long as fixed device and protective device can be consolidated It is fixed, and protective device makes test product in confined space.
In the present embodiment, protective device 302 is internally provided with damping cotton 3021.Damping cotton 3021 is mounted on protective device 302 upper top surface.In other embodiments, the surrounding side inside protective device 302 may also set up damping cotton.Damping cotton 3021 Setting can reduce 50 components of test product and be hit because interior pressure is excessive and fly and the shock that generates inside protective device 302.
In the present embodiment, protective device 302 is provided with relief valve 3022.In in order to prevent after explosion bulge test inside device Pressure is excessive, is let out with the pressure inside control when internal pressure is excessive above protective device 302 equipped with relief valve 3022 Pressure valve 3022, which is opened, carries out pressure adjusting.
In the present embodiment, controller 101 using PLC or single-chip microcontroller, it can be achieved that the editability of electric-control system 10 and The characteristic of automatic feedback and triggering reduces artificial participation and control, keeps test process more accurate controllable.
The safety of the interior pressure comparative test device 1000 of the present embodiment is secure, passes through the protective device that installation is fixed 302 and installation monitoring system 40, user can improve in the region of safety by checking that display 102 observes Test condition The security performance of test can be used for the research of explosion bulge test under pressure working condition in extreme;Multiple test products can be tested 50 interior pressure testing, working efficiency significantly improve.
Embodiment two:
The present embodiment provides a kind of methods of pressure testing in single test product, are filled using above-mentioned interior pressure comparative test Set 1000.This method has widened the application range of above-mentioned interior pressure comparative test device, makes above-mentioned interior pressure comparative test device With versatility.
In the present embodiment, concrete operation method are as follows: single test product 50 is installed on above-mentioned interior pressure comparative test dress It sets on 1000.
Before the starting of interior pressure comparison experimental rig 1000, one end valve that flow divider 204 connects test product is beaten It opens, other valves are closed.
In other embodiments, interior pressure comparative test device can be embodiment all in embodiment one.
Technology contents and technical characterstic of the invention have revealed that as above, it being understood, however, that in creative ideas of the invention Under, those skilled in the art can make various changes and improve to above structure and material, including individually disclose or want here Ask the combination of the technical characteristic of protection, it will be apparent that other combinations including these features.These deformations and/or combination each fall within this In technical field involved in inventing, and fall into the protection scope of the claims in the present invention.

Claims (10)

1. a kind of interior pressure comparative test device, for comparing the interior pressure of at least two test products, it is characterised in that: including Electric-control system, media transport system, test installation system and monitoring system, the electric-control system include controller, display and Pressure sensor, the media transport system include medium transfer line, medium box, pressure pump, flow divider, the medium transmission Pipeline is sequentially connected the medium box, the pressure pump, the flow divider, the test product, and storage is situated between in the medium box Matter, the pressure sensor are mounted on the medium transfer line between the test product and the flow divider;It is described Test installation system includes that fixed device and protective device, the test product are set on the fixed device, the protection Device makes the test product be placed in confined space, and the monitoring system is installed on inside the protective device to monitor the quilt Survey the state of product;The controller receives the signal of the pressure sensor and the monitoring system, and is transferred to described On display, the controller controls the pressure pump according to the signal and the flow divider conveys the medium.
2. pressure comparative test device in as described in claim 1, it is characterised in that: the monitoring system includes photographic device And transmitting device, the transmitting device transmit the signal of the photographic device to the controller, outside the photographic device Portion is arranged with transparent protective shield.
3. pressure comparative test device in as described in claim 1, it is characterised in that: the fixed device include upper sealing plate, Lower sealing plate and iron stand, the stabilizer blade of the iron stand fix on the ground, and the upper sealing plate and the lower sealing plate are for sealing institute Test product is stated, the lower sealing plate is fixedly mounted on the iron stand, and the lower sealing plate is equipped with valve, the valve connection The test product and the medium transfer line.
4. pressure comparative test device in as described in claim 1, it is characterised in that: the medium is liquid.
5. the interior pressure comparative test device stated such as claim 4, it is characterised in that: be equipped with liquids recovery in the protective device Or tapping equipment.
6. pressure comparative test device in as described in claim 1, it is characterised in that: the protective device can be along base track It moves and is securable to ground.
7. pressure comparative test device in as described in claim 1, it is characterised in that: the protective device, which is internally provided with, to be subtracted Shake cotton.
8. pressure comparative test device in as described in claim 1, it is characterised in that: the protective device is provided with pressure release Valve.
9. pressure comparative test device in as described in claim 1, it is characterised in that: the controller uses PLC or monolithic Machine.
10. the described in any item interior pressure comparative test devices of claim 1 to 9 pressure testing in the single test product In application.
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