CN106969983A - A kind of Demolition Tester of Tubing Pressure Resistance - Google Patents
A kind of Demolition Tester of Tubing Pressure Resistance Download PDFInfo
- Publication number
- CN106969983A CN106969983A CN201710319268.5A CN201710319268A CN106969983A CN 106969983 A CN106969983 A CN 106969983A CN 201710319268 A CN201710319268 A CN 201710319268A CN 106969983 A CN106969983 A CN 106969983A
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- Prior art keywords
- briquetting
- push rod
- tubing
- piston push
- demolition
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 230000000740 bleeding effect Effects 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 238000002474 experimental method Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 43
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000010998 test method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
Landscapes
- 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 invention discloses a kind of Demolition Tester of Tubing Pressure Resistance, it is characterized in that：Including frame, three groups of experiment test specimens are installed in the frame, every group of experiment test specimen includes upper cover, tubing, low head and pressure device, upper cover and low head are respectively sleeved at the upper and lower ends of tubing, upper cover upper end is provided with air bleeding valve, low head is provided with water injection pipe, the pressure device includes pressurization cylinder, water injecting pump, gear frame and motor, two branch pipes are connected with the water injection pipe, one branch pipe is connected on water injecting pump, and magnetic valve is provided with before water injecting pump, another branch pipe is connected on pressurization cylinder, the pressurization cylinder includes sleeve and piston push rod, the water injection pipe and sleeve connection, the front end of the piston push rod is arranged in sleeve, the piston push rod is connected by gear frame with motor.The static pressuring method by piston push rod of the present invention, makes process of the test precision higher, it is to avoid equipment error, and reduce energy consumption.
Description
Technical field
The present invention relates to a kind of Demolition Tester of Tubing Pressure Resistance.
Background technology
Demolition Tester of Tubing Pressure Resistance is according to GB/T15560-1995《Fluid conveying is instantaneously quick-fried with plastic pipe hydraulic pressure
Broken and pressure test method》The requirement of standard and design, one kind for producing is used to determining thermoplastic pipe, composite pipe is when long
Between pressure-resistant time to rupture under constant internal pressure and steady temperature or the maximum pressure value of instant blasting, be plastic pipe production firm
And the indispensable detection device of testing agency.Traditional tubing is pressure-resistant, and blaster is to convey experiment water into accumulator by water pump,
Water under high pressure is injected into tubing from accumulator again, during water under high pressure is injected, magnetic valve is set on pipeline, in tubing
Sensor is set, after the hydraulic pressure in water pipe reaches specified pressure, sensor control closed electromagnetic valve, to complete process of the test.
But, in above-mentioned method of testing, sensor can have certain delay, and completely close can be by the hypomere time just for valve
It can complete, during this period of time, have a certain amount of water and continue to inject in tubing to be measured, make the pressure in tubing after closed electromagnetic valve
Power is higher than test specified pressure, and the equipment error that this equipment belt comes exists unavoidably, and the pressure of tubing explosion is necessarily deposited
In this equipment error, this equipment error can have a strong impact on test result.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of Demolition Tester of Tubing Pressure Resistance and test method.
To achieve the above object, the invention provides following technical scheme：
Three groups of experiment test specimens, every group of experiment are installed in a kind of Demolition Tester of Tubing Pressure Resistance, including frame, the frame
Test specimen includes upper cover, tubing, low head and pressure device, and upper cover and low head are respectively sleeved at the upper and lower ends of tubing,
Upper cover upper end is provided with air bleeding valve, and low head is provided with water injection pipe, and the pressure device includes pressurization cylinder, water injecting pump, gear frame
And motor, two branch pipes are connected with the water injection pipe, and a branch pipe is connected on water injecting pump, and is set before water injecting pump
There is magnetic valve, another branch pipe is connected on pressurization cylinder, the pressurization cylinder includes sleeve and piston push rod, the water injection pipe and set
Cylinder connection, the front end of the piston push rod is arranged in sleeve, and the piston push rod is connected with transmission device, the transmission dress
Put and be connected on gear frame.
By above-mentioned technical proposal, the upper and lower ends in tubing are blocked by upper cover and low head in the present invention, started
The magnetic valve before water injecting pump, now water pump water filling into tubing are opened during test, and opens the air bleeding valve of upper cover, until exhaust
Valve continuously outflow water, now closes magnetic valve and air bleeding valve, water filling adds into tubing by the piston push rod for the cylinder that pressurizes
Pressure, makes the water in tubing quickly fill by this various ways, operating efficiency is improved, additionally by making in tubing for piston push rod
Pressure value raising and lowering process it is gentler, more accurately, it is to avoid equipment error, in addition, the promotion of this piston push rod adds
Pressure method is the pressuring method of static pressurization, the pressure in tubing is kept more stable, it is only necessary to opened when pressurization is needed
Motor is opened, making the energy consumption of test process reduces, and noiseless.
It is preferred that, the rear end of the piston push rod is provided with screw thread, and the piston push rod passes through gear frame, the gear frame bag
Travelling gear and fixed mount are included, the fixed mount is fixed in frame, front apron and rear baffle are fixed with the fixed mount, it is preceding
A mounting groove is formed between baffle plate and rear baffle, the travelling gear is arranged in mounting groove, and the travelling gear is set in
On piston push rod, and coordinate with piston push rod screw thread, the travelling gear is bevel gear, and the rotating shaft of the motor connects Duan Lian
Linkage gear is connected to, the linkage gear intermeshes with travelling gear.
By above-mentioned technical proposal, travelling gear is rotated by way of gear is engaged, travelling gear and piston push rod
Screw thread coordinate, travelling gear is limited by front apron and rear baffle, travelling gear is turned under the drive of motor
It is dynamic, and can not move forward and backward, and then piston push rod is moved forward and backward under the rotation of travelling gear, complete piston push rod is in sleeve
Move forward and backward, complete test in pressure process.
It is preferred that, the upper cover includes capping, O-shaped rubber ring, briquetting, pressing clip and locking column, the O-shaped rubber ring
It is placed in capping, the lower end of briquetting props up O-ring, and the pressing clip is pressed in the upper end of briquetting, and the air bleeding valve is connected to envelope
The upper end of lid.
By above-mentioned technical proposal, upper cover is set in capping and briquetting two ends by pressing clip, by locking regulation
Compact heap, makes compact heap push down briquetting, the lower end of briquetting is extruded O-shaped rubber ring, by the deformation of O-shaped rubber ring, extrudes close
It is enclosed in the upper end of tubing.
It is preferred that, the low head includes capping, O-shaped rubber ring, briquetting, locking column and two semicircular pressing clips,
The O-shaped rubber ring is placed in capping, and the lower end of briquetting props up O-ring, and the pressing clip is pressed in the upper end of briquetting, the note
Water pipe is connected to the lower end of capping, and the pressing clip both sides are provided with engaging lug, and the engaging lug is provided with connecting hole, the locking
Post is connected in the connecting hole of two pressing clips.
By above-mentioned technical proposal, low head is set in capping and briquetting two ends by pressing clip, makes two by locking column
Individual semicircular pressing clip is fastened, and is made pressing clip to the pressure of briquetting with this, to change the deflection of O-shaped rubber ring, is extruded
It is sealed in the lower end of tubing, it is ensured that O-shaped rubber ring preferably can be locked on the outer wall of tubing.
It is preferred that, the front end of the briquetting is provided with circular scarf, and the inwall of the pressing clip also is provided with circular scarf,
The scarf of the briquetting is identical with the gradient of the scarf of pressing clip.
By above-mentioned technical proposal, briquetting and pressing clip are respectively provided with scarf, make the incisal bevel of pressing clip and briquetting mutual
Extruding, the two scarf gradients extruded mutually are identical, make the extrusion process between briquetting and pressing clip more steady, smooth.
It is preferred that, the pressing clip includes locking folder and pressure cylinder, and the upper end of the locking folder is arranged on the lower edge of capping, under
End is connected on the scarf of briquetting, and the scarf of the pressing clip is arranged at the abutting with briquetting, and the pressure cylinder is fixed on
Locking folder lower end, the engaging lug is arranged on the both sides of pressure cylinder.
By above-mentioned technical proposal, pressing clip is set in the outside of capping and briquetting by locking folder, is adjusted by locking column
The engaging lug of pressure cylinder both sides is saved, makes pressure cylinder adjacent to each other and the lower end of pressing clip is extruded the scarf of briquetting, complete extruding close
Envelope process.
It is preferred that, the inwall of the pressure cylinder is provided with some fins.
By above-mentioned technical proposal, it can exist on the inwall of pressure cylinder provided with some fins in two semicircular pressing clips
Under the locking of locking column, sealing is completed, fin can be clipped on the outer wall of tubing, end socket is clamped in outer pipe wall, prevent envelope
Head departs from tubing under high pressure.
It is preferred that, the air bleeding valve includes valve body and valve button, and the valve inner is provided with through hole, the valve button outer wall and set
There is screw thread, the through hole whorl of the valve button and valve body coordinates, and the side wall of the valve body is provided with steam vent.
By above-mentioned technical proposal, air bleeding valve is closed and opened by the up and down motion of valve button, makes air bleeding valve can be with complete
Into opening and closing, operating process is more convenient.
Brief description of the drawings
Fig. 1 is a kind of structural representation of Demolition Tester of Tubing Pressure Resistance of the invention；
Fig. 2 is the structural representation of travelling gear in the present invention；
Fig. 3 is the structural representation of upper cover and low head in the present invention；
Fig. 4 is Fig. 3 cross section structure diagram；
Fig. 5 is the structural representation of pressing clip in the present invention；
Fig. 6 is the structural representation of briquetting in the present invention.
Reference：1st, frame；2nd, upper cover；3rd, tubing；4th, low head；5th, pressure device；51st, pressurize cylinder；511st, cover
Cylinder；512nd, piston push rod；52nd, water injecting pump；53rd, gear frame；531st, travelling gear；532nd, fixed mount；54th, motor；6th, cover；7、
O-shaped rubber ring；8th, briquetting；9th, pressing clip；91st, locking folder；92nd, pressure cylinder；10th, locking column；11st, air bleeding valve；111st, valve body；112、
Valve button；12nd, steam vent；13rd, engaging lug；14th, connecting hole；15th, fin；16th, front apron；17th, rear baffle；18th, linkage gear；
19th, magnetic valve.
Embodiment
A kind of Demolition Tester of Tubing Pressure Resistance of the invention is further described by Fig. 1 to Fig. 6.
Three groups of experiment test specimens are installed in a kind of pressure-proof bursting test machine of tubing 3, including frame 1, the frame 1, it is described
Every group of experiment test specimen includes upper cover 2, tubing 3, low head 4 and pressure device 5, and upper cover 2 and low head 4 are respectively sleeved at pipe
The upper and lower ends of material 3, the upper cover 2 includes capping 6, O-shaped rubber ring 7, briquetting 8, pressing clip 9 and locking column 10, the envelope
The inwall of lid 6 is provided with stopper slot, and lower end outer wall is provided with lower edge, and the O-shaped rubber ring 7 is placed in the stopper slot of capping 6,
The lower end of stopper slot is against, the lower end of the briquetting 8 props up O-ring, and the pressing clip 9 is pressed in the upper end of briquetting 8, the exhaust
Valve 11 is connected to the upper end of capping 6.
Further, the air bleeding valve 11 includes valve body 111 and valve button 112, and the inside of valve body 111 is provided with through hole, institute
The outer wall of valve button 112 is stated provided with screw thread, the through hole whorl of the valve button 112 and valve body 111 coordinates, the side wall of the valve body 111
Steam vent 12 is provided with, when the valve button 112 is protruded fully into valve body 111, steam vent 12 can be blocked.
Further, the low head 4 is semicircular including capping 6, O-shaped rubber ring 7, briquetting 8, locking column 10 and two
Pressing clip 9, the inwall of the capping 6 is provided with stopper slot, and lower end outer wall is provided with lower edge, and the O-shaped rubber ring 7 is placed on envelope
In the stopper slot of lid 6, the lower end of stopper slot is against, the lower end of briquetting 8 props up O-ring, and the pressing clip 9 is pressed in the upper of briquetting 8
End, the water injection pipe is connected to the lower end of capping 6, and the both sides of pressing clip 9 are provided with engaging lug 13, and the engaging lug 13 is provided with
Internal thread is provided with connecting hole 14, the connecting hole 14, the locking column 10 coordinates with the screw thread of connecting hole 14, the locking column 10
It is connected in the connecting hole 14 of two pressing clips 9, the front end of the briquetting 8 is provided with circular scarf, and stating pressing clip 9 includes locking
Folder 91 and pressure cylinder 92, the upper end of the locking folder 91 are arranged on the lower edge of capping 6, and the inwall of the pressing clip 9 also is provided with circle
Scarf, the scarf of the compact heap is connected on the scarf of briquetting 8, and the scarf of the briquetting 8 is oblique with pressing clip 9
The gradient of tangent plane is identical, and the scarf of the pressing clip 9 is arranged at the abutting with briquetting 8, and the pressure cylinder 92 is fixed on locking
91 lower ends are pressed from both sides, the engaging lug 13 is arranged on the both sides of pressure cylinder 92, and the inwall of the pressure cylinder 92 is provided with some fins 15, described
The inwall of pressing clip 9 also is provided with circular scarf, and the scarf of the briquetting 8 is identical with the gradient of the scarf of pressing clip 9.
Further, the pressure device 5 includes pressurization cylinder 51, water injecting pump 52, gear frame 53 and motor 54, the water filling
Threeway is connected with pipe, two branch pipes are connected with by threeway, wherein a branch pipe is connected on water injecting pump 52, and in branch pipe
Magnetic valve 19 is provided with, another branch pipe is connected on pressurization cylinder 51.
Further, the pressurization cylinder 51 includes sleeve 511 and piston push rod 512, and the rear end of the piston push rod 512 is set
There is screw thread, the piston push rod 512 passes through gear frame 53, and the gear frame 53 includes travelling gear 531 and fixed mount 532, institute
State fixed mount 532 to be fixed in frame 1, front apron 16 and rear baffle 17 are fixed with the fixed mount 532, front apron 16 is with after
A mounting groove is formed between baffle plate 17, the travelling gear 531 is arranged in mounting groove, and the travelling gear 531 is set in
On piston push rod 512, and coordinate with the screw thread of piston push rod 512, the travelling gear 531 is bevel gear, the motor 54
Rotating shaft connect section and be connected with linkage gear 18, the linkage gear 18 intermeshes with travelling gear 531, states water injection pipe and sleeve
511 connections, the front end of the piston push rod 512 is arranged in sleeve 511, the piston push rod 512 by gear frame 53 with
Motor 54 is connected.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. three groups of experiment test specimens are installed, every group of examination in a kind of Demolition Tester of Tubing Pressure Resistance, including frame, the frame
Test specimen is tested including upper cover, tubing, low head and pressure device, upper cover and low head are respectively sleeved at up and down the two of tubing
End, upper cover upper end is provided with air bleeding valve, and low head is provided with water injection pipe, it is characterized in that：The pressure device includes pressurization cylinder, note
Two branch pipes are connected with water pump, gear frame and motor, the water injection pipe, wherein a branch pipe is connected on water injecting pump, and
Magnetic valve is provided with branch pipe, another branch pipe is connected on pressurization cylinder, the pressurization cylinder includes sleeve and piston push rod, described
Water injection pipe and sleeve connection, the front end of the piston push rod are arranged in sleeve, and the piston push rod is connected with transmission device,
The transmission device is connected on gear frame.
2. a kind of Demolition Tester of Tubing Pressure Resistance according to claim 1, it is characterized in that：The rear end of the piston push rod is set
There is screw thread, the piston push rod passes through gear frame, and the gear frame includes travelling gear and fixed mount, and the transmission device is electricity
Machine, the fixed mount is fixed in frame, front apron and rear baffle is fixed with the fixed mount, between front apron and rear baffle
A mounting groove is formed, the travelling gear is arranged in mounting groove, and the travelling gear is set on piston push rod, and with
Piston push rod screw thread coordinates, and the travelling gear is bevel gear, and the rotating shaft of the motor connects section and is connected with linkage gear, described
Linkage gear intermeshes with travelling gear.
3. a kind of Demolition Tester of Tubing Pressure Resistance according to claim 1, it is characterized in that：The upper cover includes capping, O
Shape rubber ring, briquetting, pressing clip and locking column, the O-shaped rubber ring are placed in capping, and the lower end of briquetting props up O-ring, institute
The upper end that pressing clip is pressed in briquetting is stated, the air bleeding valve is connected to the upper end of capping.
4. a kind of Demolition Tester of Tubing Pressure Resistance according to claim 1, it is characterized in that：The low head includes capping, O
Shape rubber ring, briquetting, locking column and two semicircular pressing clips, the O-shaped rubber ring are placed in capping, the lower end of briquetting
O-ring is propped up, the pressing clip is pressed in the upper end of briquetting, and the water injection pipe is connected to the lower end of capping, the pressing clip both sides
Provided with engaging lug, the engaging lug is provided with connecting hole, and the locking column is connected in the connecting hole of two pressing clips.
5. a kind of Demolition Tester of Tubing Pressure Resistance according to claim 3 or 4, it is characterized in that：The front end of the briquetting is set
There is circular scarf, the inwall of the pressing clip also is provided with circular scarf, the beveling of the scarf and pressing clip of the briquetting
The gradient in face is identical.
6. a kind of Demolition Tester of Tubing Pressure Resistance according to claim 3 or 4, it is characterized in that：The pressing clip includes lock
Clamp and pressure cylinder, the upper end of the locking folder are arranged on the lower edge of capping, and lower end is connected on the scarf of briquetting, described to compress
The scarf of folder is arranged at the abutting with briquetting, and the pressure cylinder is fixed on locking folder lower end, and the engaging lug is arranged on pressure cylinder
Both sides.
7. a kind of Demolition Tester of Tubing Pressure Resistance according to claim 6, it is characterized in that：The inwall of the pressure cylinder is provided with
Some fins.
8. a kind of Demolition Tester of Tubing Pressure Resistance according to claim 1, it is characterized in that：The air bleeding valve include valve body and
Valve button, the valve inner is provided with through hole, and the valve button outer wall is provided with screw thread, and the through hole whorl of the valve button and valve body is matched somebody with somebody
Close, the side wall of the valve body is provided with steam vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710319268.5A CN106969983A (en) | 2017-05-09 | 2017-05-09 | A kind of Demolition Tester of Tubing Pressure Resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710319268.5A CN106969983A (en) | 2017-05-09 | 2017-05-09 | A kind of Demolition Tester of Tubing Pressure Resistance |
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| Publication Number | Publication Date |
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| CN106969983A true CN106969983A (en) | 2017-07-21 |
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| CN201710319268.5A Pending CN106969983A (en) | 2017-05-09 | 2017-05-09 | A kind of Demolition Tester of Tubing Pressure Resistance |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037014A (en) * | 2017-12-08 | 2018-05-15 | 北京强度环境研究所 | A kind of multimedium ultralow pressure pressure-loaded pilot system |
| CN109142103A (en) * | 2018-09-26 | 2019-01-04 | 中国人民解放军陆军工程大学 | A kind of big equivalent underground explosion effect analog device |
| CN110207900A (en) * | 2019-06-17 | 2019-09-06 | 湖南省宝满科技开发有限公司 | The tube expansion detection method of heat-conducting copper pipe in a kind of fan coil |
| CN111351715A (en) * | 2020-03-17 | 2020-06-30 | 杭州龙华消防检测有限公司 | Automatic fire hose check out test set of filling water and steady voltage |
| CN111665144A (en) * | 2020-06-04 | 2020-09-15 | 烟台市建工检测服务中心 | Plastic pipe pressure resistance detection device and detection method |
| CN113281187A (en) * | 2021-06-25 | 2021-08-20 | 临海伟星新型建材有限公司 | Pipe pressure resistance testing device and testing method thereof |
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