CN107860532A - Box framework air tightness experimental device and method - Google Patents
Box framework air tightness experimental device and method Download PDFInfo
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- CN107860532A CN107860532A CN201711120168.6A CN201711120168A CN107860532A CN 107860532 A CN107860532 A CN 107860532A CN 201711120168 A CN201711120168 A CN 201711120168A CN 107860532 A CN107860532 A CN 107860532A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating 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
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Abstract
Box framework air tightness experimental device and method belong to rail vehicle truck air tightness experimental device and method and technology field, the device includes two tee ball valve screw plug devices, conventional ball valve screw plug device, unthreaded hole sealing device, hydralic pressure gauge, conventional screw plug, normal pressure tap water supply system and high-pressure pump water system, and tee ball valve screw plug device includes triple valve screw plug and tee ball valve with central through hole.When the present invention gives filling water under high pressure in totally-enclosed simplified model casing by high-pressure pump water system and carries out pressurize observation inspection, the hook head portions of fabrication hole hook are hooked in the fabrication hole madial wall of gusset, so that hook screw plug not with holes will not be ejected out of unthreaded hole by pressure, and the multiple sealing rings for being wound by raw material band and being connected in the sealing ring annular groove of hook screw plug thread segment lower end not with holes then deform under common squeezing action of the thread of hook screw plug screw thread with fabrication hole madial wall, so as to coordinate raw material band that fabrication hole is fully sealed.
Description
Technical field
The invention belongs to rail vehicle truck air tightness experimental device and method field, and in particular to a kind of box framework
Air tightness experimental device and method.
Background technology
On the bogie frame of certain trolley coach included curb girder, longitudinal and cross beam be by upper cover plate, lower cover,
Case structure that two pieces of sidewall panelings, two end plates and polylith gusset splicing composition form and independent of each other.Such curb girder is box
The simplified model casing 1 of structure, longeron case structure and crossbeam case structure as shown in Figure 1 to Figure 2, the simplified model casing 1
It is combined into jointly by upper cover plate 1-1, lower cover 1-3 two pieces of sidewall panelings, two end plates and forms a face casing of rectangle six, simplified model
The middle part of casing 1 is provided with technique 1-2-1 with holes gusset 1-2, and the inside division of simplified model casing 1 is former and later two by it
Die cavity independent of one another.Wherein, two upper cover plate screwed hole 1-1-1 are provided with positioned at upper cover plate 1-1 and one is closed on gusset 1-2's
Unthreaded hole 1-1-2.Two lower cover screwed hole 1-3-1 are then provided only with lower cover 1-3.Two lower cover screwed hole 1-3-1 are located at
Gusset 1-2 both sides, two upper cover plate screwed hole 1-1-1 also are located at gusset 1-2 both sides.
On the other hand, with the raising of the rail vehicle credit rating to export to foreign countries, now need to foregoing simplified model
The class box weldment of casing 1 carries out air tightness test.And the not corresponding experimental rig of existing train manufacturing field and method,
Especially, to being sealed adjacent to gusset 1-2 unthreaded hole the problem of, can not be efficiently solved always.
The content of the invention
Do not have the experimental rig that air tightness test is carried out for class box weldment to solve existing train manufacturing field
And method, especially, the technical problem that can not be effectively sealed to the unthreaded hole of neighbouring gusset, the present invention provides a kind of box framework gas
Close property experimental provision and method.
The technical solution adopted for solving the technical problem of the present invention is as follows：
Box framework air tightness experimental device, it includes two tee ball valve screw plug devices, conventional ball valve screw plug device, light
Hole sealing device, hydralic pressure gauge, conventional screw plug, normal pressure tap water supply system and high-pressure pump water system, tee ball valve screw plug dress
Put including triple valve screw plug and tee ball valve with central through hole, central through hole and three-way ball with triple valve screw plug
The VERTICAL TUBE lower end connection of valve；Conventional ball valve screw plug device includes the conventional ball valve screw plug with central through hole and leads directly to conventional ball
Valve, connection both it；The unthreaded hole sealing device includes fabrication hole hook, multiple sealing rings and the extension not with holes of alphabetical J-shaped
Hook screw plug, the upper end of fabrication hole hook are vertically fixed on the bottom center of hook screw plug not with holes, hook screw plug not with holes
Thread segment on have additional multiple sealing ring annular grooves around its circumference, each sealing ring is coaxially nested in hook screw plug
In one corresponding sealing ring annular groove of thread segment lower end；The VERTICAL TUBE top of hydralic pressure gauge and a tee ball valve screw plug device connects
It is logical, a pressure meter three-way valve system is collectively forming both it.
Box framework air tightness experimental method, it comprises the following steps：
Step 1：Hook screw plug not with holes is wound with raw material band, and by the insertion of each sealing ring and is fixed on extension
In one corresponding sealing ring annular groove of hook screw plug lower end；
Step 2：The fabrication hole hook of unthreaded hole sealing device is inserted in unthreaded hole, and the hook head portions for linking up with fabrication hole
It is hooked on the fabrication hole madial wall of gusset；
Step 3：The relative altitude of unthreaded hole sealing device and unthreaded hole is adjusted, sealing ring is located at the type of simplified model casing
Intracavitary portion, and it is close to the lower port and inwall of unthreaded hole；
Step 4：The triple valve screw plug with central through hole in pressure meter three-way valve system is passed through into raw material band and one
Upper cover plate screwed hole thread seal connection corresponding to individual；
Step 5：By in another independent tee ball valve screw plug device with triple valve screw plug by raw material band with
Another corresponding upper cover plate screwed hole thread seal connection, and by the threeway port on the independent tee ball valve screw plug device
A is connected with normal pressure tap water supply system by pipeline；And threeway port B and high-pressure pump water system are connected by pipeline respectively
Connect；
Step 6：Straight-through conventional ball valve in conventional ball valve screw plug device is passed through into raw material band lower cover corresponding with one
Screwed hole thread seal is connected, and a lower cover screwed hole is connected by raw material band with conventional screw plug thread seal；
Step 7：Tee ball valve port C in pressure meter three-way valve system is switched into open mode, and will be with hydralic pressure gauge
The port of connection is set to normally off；And the threeway port A on independent tee ball valve screw plug device is set to normally open, and
Threeway port B is set to normally off；
Step 8：Held by normal pressure tap water supply system through threeway port A described in step 5 into simplified model casing
Continuous water filling, until current fill former and later two die cavities independent of one another of simplified model casing and overflow from the port C described in step 7
During stream, stop the water flood operations of normal pressure tap water supply system, and by the tee ball valve in pressure meter three-way valve system by end
Mouthful C is set to normally off again, then the port connected with hydralic pressure gauge is set into normally open, and by independent tee ball valve screw plug
Threeway port A on device is set to normally off, and threeway port B is set into normally open, and simplified model casing is complete
It is closed；
Step 9：Start high-pressure pump water system, and three go sides being passed on independent tee ball valve screw plug device
Pressurized water injection in completely closed simplified model casing described in mouth B to step 8, and monitor the pressure value indicated on hydralic pressure gauge；
When pressure value rises to 600kPa, close threeway port B and high-pressure pump water system, when the first time pressurize of a length of 5 minutes
Check, observe casing and the leakage scenarios and casing of pipeline and the deformation of component；High pressure water supplying pump system is again started up afterwards
System, and the threeway port B being passed on independent tee ball valve screw plug device is to closed simplification mould completely described in step 8
Pressurized water injection in molding box body, and the pressure value indicated on hydralic pressure gauge is monitored, increase pressure to 1100kPa, close threeway port B
With high-pressure pump water system, second of pressurize inspection of a length of 30 minutes during progress, deformation and the seepage feelings of casing are checked again for
Condition；If each bar weld seam of simplified model casing without leak and metaboly, is slowly opened in pressure meter three-way valve system
The port C of tee ball valve, when sluggish flow outflow carries out reducing pressure to 850kPa in control cabinet body, close port C, and again
Check casing whether there is obvious raised, deformation and seepage；If each bar weld seam of simplified model casing without leak and metaboly,
Then it is determined as that welding quality is qualified, is otherwise determined as off quality, records the result of determination；
Step 10：The tee ball valve port C in pressure meter three-way valve system is opened simultaneously and leads directly to conventional ball valve, by simplification
Water in model casing all empties, and casing is dried, that is, completes box framework hermeticity experiment process.
The beneficial effects of the invention are as follows：The unthreaded hole sealing device of the box framework air tightness experimental device includes alphabetical J-shaped
Fabrication hole hook, sealing ring and hook screw plug not with holes, the upper end of fabrication hole hook is vertically fixed on hook not with holes
The bottom center of screw plug, multiple sealing rings are coaxially nested in a corresponding sealing ring annular groove of hook screw plug lower end；It is logical
Cross in the fabrication hole hook insertion unthreaded hole by unthreaded hole sealing device, and the technique that the hook head portions for linking up with fabrication hole are hooked in gusset
On the madial wall of hole；By adjusting the relative altitude of unthreaded hole sealing device and unthreaded hole, sealing ring can be made to be located at simplified model casing
Die cavity inside, and be close to the lower port and inwall of unthreaded hole.When giving totally-enclosed simplified model case by high-pressure pump water system
When filling water under high pressure in vivo and carrying out pressurize observation inspection, the hook head portions of fabrication hole hook are hooked on the inside of the fabrication hole of gusset
Wall, so that hook screw plug not with holes will not be ejected out of unthreaded hole by pressure, and wound by raw material band and be connected in not with holes
Hook screw plug thread segment lower end sealing ring annular groove in multiple sealing rings then in the thread and technique of hook screw plug screw thread
Deformed under the common squeezing action of hole madial wall, so as to coordinate raw material band that fabrication hole is fully sealed, and then thoroughly overcome neighbour
The original technology problem that the unthreaded hole of nearly gusset can not be sealed effectively.
One pressure meter three-way valve system, the pressure are collectively forming as both hydralic pressure gauge and a tee ball valve screw plug device
Whether the water level that table threeway valve system is used in test chamber is already filled with, and for hydraulic pressure to be switched to the communicating pipe of pressure gauge
Line.Draining after conventional ball valve screw plug device is used for hermeticity experiment is vented.On independent tee ball valve screw plug device
Threeway port A and threeway port B is then respectively used to corresponding control normal pressure tap water supply system pipeline and high-pressure pump water system
The break-make of pipeline.Box framework air tightness experimental device takes full advantage of box as the train crossbeam characterized using simplified model casing
Structure is provided with the inherent structure feature of the unthreaded hole of neighbouring gusset, so as to utilize unthreaded hole sealing device to the technique under packing state
Realize and be fully sealed in hole.
When box framework air tightness experimental method sets forth pressure value and the pressurize needed for multiple pressurize examination phases
Between wait technical parameter it is reliable and stable so that detection process is incremental.
In addition the box framework air tightness experimental device also has simple and practical, and easy to operate, cost is cheap, method
It is easy to grasp, the advantages that being easy to popularize.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of existing simplified model casing；
Fig. 2 is the cross-sectional view for the simplified model casing for removing one piece of sidewall paneling；
Fig. 3 is the application schematic diagram of the box framework air tightness experimental device of the present invention；
Fig. 4 is Fig. 3 blast assembling schematic diagram；
Fig. 5 is the configuration schematic diagram of unthreaded hole sealing device of the present invention；
Fig. 6 is the dimensional structure diagram of tee ball valve screw plug device of the present invention；
Fig. 7 is the dimensional structure diagram of the conventional ball valve screw plug device of the present invention；
Fig. 8 is Fig. 3 center line cross-sectional schematic schematic diagram.
Embodiment
The present invention is described in further details below in conjunction with the accompanying drawings.
As shown in Fig. 3 to Fig. 7, box framework air tightness experimental device of the invention includes two tee ball valve screw plug devices
2nd, conventional ball valve screw plug device 3, unthreaded hole sealing device 4, hydralic pressure gauge 5, conventional screw plug 6, normal pressure tap water supply system and high pressure
Water supplying pump system, tee ball valve screw plug device 2 include triple valve screw plug 2-2 and tee ball valve 2-1 with central through hole, band
There is triple valve screw plug 2-2 central through hole to be connected with tee ball valve 2-1 VERTICAL TUBE lower end；Conventional ball valve screw plug device 3 wraps
Include the conventional ball valve screw plug 3-2 with central through hole and lead directly to conventional ball valve 3-1, connection both it, it is used for hermeticity experiment
After draining emptying；Fabrication hole hook 4-1, the three sealing ring 4-3 of the unthreaded hole sealing device 4 including alphabetical J-shaped and
Hook screw plug 4-2 not with holes, fabrication hole hook 4-1 upper end are vertically fixed in hook screw plug 4-2 not with holes bottom surface
The heart, three sealing ring annular grooves around its circumference, each sealing ring are had additional on hook screw plug 4-2 not with holes thread segment
4-3 is coaxially nested in a corresponding sealing ring annular groove of hook screw plug 4-2 thread segment lower end；Hydralic pressure gauge 5 and one
The VERTICAL TUBE top connection of tee ball valve screw plug device 2, is collectively forming a pressure meter three-way valve system both it.The pressure gauge
Whether the water level that threeway valve system is used in test chamber is already filled with, and for hydraulic pressure to be switched to the communicating pipe of pressure gauge
Line.Conventional 6 numbers of screw plug determine according to the number of remaining screw on curb girder, longitudinal and cross beam case structure and aperture, are used in combination
In the sealing for all remaining screws.
As shown in figure 8, the box framework air tightness experimental method of the present invention comprises the following steps：
Step 1：Hook screw plug 4-2 not with holes is wound with raw material band, and each sealing ring 4-3 is embedded and solid
It is scheduled in a corresponding sealing ring annular groove of hook screw plug 4-2 lower ends；
Step 2：The fabrication hole hook 4-1 of unthreaded hole sealing device 4 is inserted in unthreaded hole 1-1-2, and fabrication hole is linked up with 4-
1 hook head portions are hooked on gusset 1-2 fabrication hole 1-2-1 madial walls；
Step 3：Unthreaded hole sealing device 4 and unthreaded hole 1-1-2 relative altitude is adjusted, sealing ring 4-3 is located at simplified model
Inside the die cavity of casing 1, and it is close to unthreaded hole 1-1-2 lower port and inwall；
Step 4：The triple valve screw plug 2-2 with central through hole in pressure meter three-way valve system is passed through into raw material band
Upper cover plate screwed hole 1-1-1 thread seals connection corresponding with one；
Step 5：Raw material will be passed through with triple valve screw plug 2-2 in another independent tee ball valve screw plug device 2
Band upper cover plate screwed hole 1-1-1 thread seals connection corresponding with another, and by the independent tee ball valve screw plug device 2
Threeway port A be connected with normal pressure tap water supply system by pipeline；And threeway port B and high-pressure pump water system are distinguished
Connected by pipeline；
Step 6：By the straight-through conventional ball valve 3-1 in conventional ball valve screw plug device 3 by raw material band it is corresponding with one under
Cover plate screwed hole 1-3-1 thread seals are connected, and a lower cover screwed hole 1-3-1 is passed through into raw material band and the conventional spiral shell of screw plug 6
Line is tightly connected；
Step 7：Tee ball valve 2-1 port C in pressure meter three-way valve system are switched into open mode, and will be with liquid
The port that pressure table 5 connects is set to normally off；And the threeway port A on independent tee ball valve screw plug device 2 is set to normally opened
State, and threeway port B is set to normally off；
Step 8：Held by normal pressure tap water supply system through threeway port A described in step 5 into simplified model casing 1
Continuous water filling, until current fill former and later two die cavities independent of one another of simplified model casing 1 and from the port C described in step 7
During overflow, stop the water flood operations of normal pressure tap water supply system, and pass through the tee ball valve 2-1 in pressure meter three-way valve system
Port C is set to normally off again, then the port connected with hydralic pressure gauge 5 is set to normally open, and by independent three-way ball
Threeway port A on valve screw plug device 2 is set to normally off, and threeway port B is set into normally open, and by simplified model case
Body 1 is completely closed；
Step 9：Start high-pressure pump water system, and three go sides being passed on independent tee ball valve screw plug device 2
Pressurized water injection in completely closed simplified model casing 1 described in mouth B to step 8, and monitor the number pressure indicated on hydralic pressure gauge 5
Value；When pressure value rises to 600kPa, threeway port B and high-pressure pump water system are closed, and simplified model casing 1 is carried out
The Shi Changwei first time pressurize inspections of 5 minutes, observe casing and the leakage scenarios and casing of pipeline and the deformation of component；It
After be again started up high-pressure pump water system, and the threeway port B being passed on independent tee ball valve screw plug device 2 is to step
Pressurized water injection in the eight completely closed simplified model casings 1, and the pressure value indicated on hydralic pressure gauge 5 is monitored, increase pressure
Power closes threeway port B and high-pressure pump water system to 1100kPa, second of pressurize inspection of a length of 30 minutes during progress, then
The secondary deformation for checking casing and leakage scenarios；If each bar weld seam of simplified model casing 1 is without leak and metaboly, slowly
Open the port C of the tee ball valve 2-1 in pressure meter three-way valve system, in control cabinet body sluggish flow outflow carry out reduction pressure
During to 850kPa, close port C, and check again for casing whether there is obvious raised, deformation and seepage；If simplified model casing 1
Each bar weld seam without leak and metaboly, then be determined as that welding quality is qualified, be otherwise determined as it is off quality, record should
Result of determination；
Step 10：The tee ball valve port C in pressure meter three-way valve system is opened simultaneously and leads directly to conventional ball valve 3-1, will
Water in simplified model casing 1 all empties, and casing is dried, that is, completes the box framework hermeticity experiment process of the present invention.
When the device of the concrete application present invention carries out the air-tight test of box framework, the triple valve with central through hole is used
Screw plug 2-2, the conventional ball valve screw plug 3-2 with central through hole insert straight tube after opening up through hole at the center of conventional screw plug 6, and
Welding manufacture obtains.Tee ball valve 2-1 selects the Q45F-16P type tee ball valves that Shanghai produces for beneficial valve Co., Ltd, conventional
Ball valve 3-1 selects the X43W-10P type straight-through valves of Tianjin gas spy factory production, you can implements the air-tight test side of the present invention
Method.
Claims (2)
1. box framework air tightness experimental device, it is characterised in that：The device include two tee ball valve screw plug devices (2), often
Advise ball valve screw plug device (3), unthreaded hole sealing device (4), hydralic pressure gauge (5), conventional screw plug (6), normal pressure tap water supply system and
High-pressure pump water system, tee ball valve screw plug device (2) include triple valve screw plug (2-2) and three-way ball with central through hole
Valve (2-1), connected with triple valve with the central through hole of screw plug (2-2) with the VERTICAL TUBE lower end of tee ball valve (2-1)；Conventional ball
Valve screw plug device (3) includes conventional ball valve screw plug (3-2) and straight-through conventional ball valve (3-1) with central through hole, connects both it
It is logical；The fabrication hole hook (4-1) of the unthreaded hole sealing device (4) including alphabetical J-shaped, multiple sealing rings (4-3) and not with holes
Screw plug (4-2) is linked up with, the upper end of fabrication hole hook (4-1) is vertically fixed on the bottom center of hook screw plug (4-2) not with holes,
Multiple sealing ring annular grooves around its circumference, each sealing ring are had additional on the thread segment of hook screw plug (4-2) not with holes
(4-3) is coaxially nested in a corresponding sealing ring annular groove of the thread segment lower end of hook screw plug (4-2)；Hydralic pressure gauge (5)
Connected with the VERTICAL TUBE top of a tee ball valve screw plug device (2), be collectively forming a pressure meter three-way valve system both it.
2. the experimental method based on the box framework air tightness experimental device described in claim 1, it is characterised in that：This method bag
Include following steps：
Step 1：Hook screw plug (4-2) not with holes is wound with raw material band, and each sealing ring (4-3) is embedded and solid
It is scheduled in a corresponding sealing ring annular groove of hook screw plug (4-2) lower end；
Step 2：Fabrication hole hook (4-1) the insertion unthreaded hole (1-1-2) of unthreaded hole sealing device (4) is interior, and link up with fabrication hole
The hook head portions of (4-1) are hooked on gusset (1-2) fabrication hole (1-2-1) madial wall；
Step 3：The relative altitude of unthreaded hole sealing device (4) and unthreaded hole (1-1-2) is adjusted, is located at sealing ring (4-3) and simplifies mould
Inside the die cavity of molding box body (1), and it is close to the lower port and inwall of unthreaded hole (1-1-2)；
Step 4：By the triple valve with central through hole in pressure meter three-way valve system with screw plug (2-2) by raw material band with
One corresponding upper cover plate screwed hole (1-1-1) thread seal connection；
Step 5：Raw material will be passed through with triple valve screw plug (2-2) in another independent tee ball valve screw plug device (2)
The connection of band corresponding with another upper cover plate screwed hole (1-1-1) thread seal, and by the independent tee ball valve screw plug device
(2) the threeway port A on is connected with normal pressure tap water supply system by pipeline；And by threeway port B and high pressure water supplying pump system
System is connected by pipeline respectively；
Step 6：By the straight-through conventional ball valve (3-1) in conventional ball valve screw plug device (3) by raw material band it is corresponding with one under
Cover plate screwed hole (1-3-1) thread seal is connected, and a lower cover screwed hole (1-3-1) is passed through into raw material band and conventional screw plug
(6) thread seal connects；
Step 7：Tee ball valve (2-1) port C in pressure meter three-way valve system is switched into open mode, and will be with hydraulic pressure
The port of table (5) connection is set to normally off；And the threeway port A on independent tee ball valve screw plug device (2) is set to often
Open state, and threeway port B is set to normally off；
Step 8：By normal pressure tap water supply system through threeway port A described in step 5 into simplified model casing (1) continue
Water filling, until current fill former and later two die cavities independent of one another of simplified model casing 1 and overflow from the port C described in step 7
During stream, stop the water flood operations of normal pressure tap water supply system, and pass through the tee ball valve (2-1) in pressure meter three-way valve system
Port C is set to normally off again, then the port connected with hydralic pressure gauge (5) is set to normally open, and by independent threeway
Threeway port A on ball valve screw plug device (2) is set to normally off, and threeway port B is set into normally open, and will simplify mould
Molding box body (1) is completely closed；
Step 9：Start high-pressure pump water system, and the threeway port being passed on independent tee ball valve screw plug device (2)
Completely closed simplified model casing (1) interior pressurized water injection described in B to step 8, and monitor the pressure indicated on hydralic pressure gauge (5)
Numerical value；When pressure value rises to 600kPa, close threeway port B and high-pressure pump water system, when first time of a length of 5 minutes
Pressurize inspection, observe casing and the leakage scenarios and casing of pipeline and the deformation of component；High-pressure pump confession is again started up afterwards
Water system, and the threeway port B being passed on independent tee ball valve screw plug device (2) to described in step 8 completely it is closed
Simplified model casing (1) interior pressurized water injection, and the pressure value indicated on hydralic pressure gauge (5) is monitored, increase pressure to 1100kPa,
Close threeway port B and high-pressure pump water system, second of pressurize inspection of a length of 30 minutes, checks again for casing during progress
Deformation and leakage scenarios；If each bar weld seam of simplified model casing (1) without leak and metaboly, slowly opens pressure gauge
The port C of tee ball valve (2-1) in threeway valve system, in control cabinet body sluggish flow outflow reduce pressure to 850kPa
When, close port C, and check again for casing whether there is obvious raised, deformation and seepage；If each bar of simplified model casing (1)
Weld seam without leak and metaboly, is then determined as that welding quality is qualified, is otherwise determined as off quality, records the judgement knot
Fruit；
Step 10：The tee ball valve port C in pressure meter three-way valve system is opened simultaneously and leads directly to conventional ball valve (3-1), by letter
The water changed in model casing (1) all empties, and casing is dried, that is, completes box framework hermeticity experiment process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120168.6A CN107860532A (en) | 2017-11-14 | 2017-11-14 | Box framework air tightness experimental device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120168.6A CN107860532A (en) | 2017-11-14 | 2017-11-14 | Box framework air tightness experimental device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107860532A true CN107860532A (en) | 2018-03-30 |
Family
ID=61701717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711120168.6A Pending CN107860532A (en) | 2017-11-14 | 2017-11-14 | Box framework air tightness experimental device and method |
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| Country | Link |
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| CN (1) | CN107860532A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203069337U (en) * | 2012-12-10 | 2013-07-17 | 天水锻压机床(集团)有限公司 | Hydraulic pressure test machine for hydraulic pressure detection of steel pipe |
| CN203275041U (en) * | 2013-03-14 | 2013-11-06 | 天源环保有限公司 | Pipeline suppressing device |
| CN204330227U (en) * | 2014-12-22 | 2015-05-13 | 南宁八菱科技股份有限公司 | Anti-detachment performing leak test plug |
| CN106066229A (en) * | 2016-06-06 | 2016-11-02 | 江苏武进不锈股份有限公司 | Simple type steel pipe air seal test outlet closing device |
| CN205981925U (en) * | 2016-08-30 | 2017-02-22 | 四川华都核设备制造有限公司 | Hoop type hydraulical pressure test apparatus |
-
2017
- 2017-11-14 CN CN201711120168.6A patent/CN107860532A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203069337U (en) * | 2012-12-10 | 2013-07-17 | 天水锻压机床(集团)有限公司 | Hydraulic pressure test machine for hydraulic pressure detection of steel pipe |
| CN203275041U (en) * | 2013-03-14 | 2013-11-06 | 天源环保有限公司 | Pipeline suppressing device |
| CN204330227U (en) * | 2014-12-22 | 2015-05-13 | 南宁八菱科技股份有限公司 | Anti-detachment performing leak test plug |
| CN106066229A (en) * | 2016-06-06 | 2016-11-02 | 江苏武进不锈股份有限公司 | Simple type steel pipe air seal test outlet closing device |
| CN205981925U (en) * | 2016-08-30 | 2017-02-22 | 四川华都核设备制造有限公司 | Hoop type hydraulical pressure test apparatus |
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Application publication date: 20180330 |