CN201034798Y - Braking pipe air tightness test-bed - Google Patents
Braking pipe air tightness test-bed Download PDFInfo
- Publication number
- CN201034798Y CN201034798Y CNU2007201460489U CN200720146048U CN201034798Y CN 201034798 Y CN201034798 Y CN 201034798Y CN U2007201460489 U CNU2007201460489 U CN U2007201460489U CN 200720146048 U CN200720146048 U CN 200720146048U CN 201034798 Y CN201034798 Y CN 201034798Y
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- Prior art keywords
- brake pipe
- fills
- airduct
- slave
- test platform
- Prior art date
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- 239000003570 air Substances 0.000 title claims abstract description 40
- 210000000214 Mouth Anatomy 0.000 claims description 31
- 239000007789 gases Substances 0.000 claims description 28
- 238000009434 installation Methods 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 abstract 5
- 230000001680 brushing Effects 0.000 abstract 1
- 230000000875 corresponding Effects 0.000 description 8
- 238000010586 diagrams Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 230000002441 reversible Effects 0.000 description 3
- 230000002459 sustained Effects 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 methods Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reactions Methods 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 materials Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
Description
Technical field
The utility model relates to air-tightness detection device, definite a kind of brake pipe air-tight test platform of saying so.
Background technology
Those skilled in the art are very clear, for the various brake pipes on the various motor vehicles, all need to have good air-tightness as hydraulic braking pipe or air-pressure brake pipe.
At present, detect brake pipe and whether leak, need two steps:
1, brake pipe is installed in pressurization then on the car body, under the actual pressure that bears of car body, detects;
2, brush suds on the brake pipe again, see whether leak.
For step 1, with the brake pipe actual installation onboard, program is loaded down with trivial details, and this step can only be by manually-operated, needs a large amount of manpowers, and is not only consuming time but also consume power, also needs to carry out step 2 brush suds, just can detect, and whole procedure was not only consuming time but also consume power.
The utility model content
The installation procedure that technical problem to be solved in the utility model provides a kind of needs is simple, and trace routine is simple, time saving and energy saving brake pipe air-tight test platform.
For achieving the above object, the utility model is by the following technical solutions:
A kind of brake pipe air-tight test platform, comprise main frame and slave, at least one pair of fixedly packoff of the fixed support of brake pipe and at least one pair of shutoff brake pipe mouth of pipe is installed on described main frame and the described slave, described packoff is provided with and fills wind apparatus, and the described wind apparatus that fills is connected with pressure-detecting device.
Preferably, a pair of fixed support, a pair of packoff and one being installed on described main frame and the slave fills wind apparatus or the two pairs of fixed supports, the two pairs of packoffs and two and fills wind apparatus.
Preferably, described packoff comprises a cylinder and the rubber blanket that is installed in described cylinder piston boom end, and the described wind apparatus that fills is for filling airduct, and the described airduct that fills is installed on the described rubber blanket.
Preferably, under the described slave chassis universal wheel is installed.
Preferably, on the described slave hoistable platform is installed, described hoistable platform connects the cylinder on the described slave, and described hoistable platform side direction is vertically installed with line slideway.
Preferably, described pressure-detecting device comprises pressure transducer and central processing unit and/or tensimeter:
Preferably, described pressure transducer is arranged on the described airduct mouth of pipe that fills, and its signal output part connects described central processing unit;
Preferably, described tensimeter is provided with the described airduct mouth of pipe that fills.
Preferably, described central processing unit is a Programmable Logic Controller.
Preferably, be connected with hand control valve on the described cylinder gas circuit, the described airduct mouth of pipe that fills is provided with control and fills the air intake valve of airduct air intake and the exhaust valve of control brake pipe air draft, described air intake valve of described Controlled by Programmable Controller and described exhaust valve.
Preferably, described Programmable Logic Controller also is connected with acoustic-optic alarm, mini-printer.
Preferably, the control input end of described acoustic-optic alarm, mini-printer, air intake valve and exhaust valve is integrated on the touch-screen.
A kind of brake pipe air-tight test platform, comprise main frame and slave, at least one pair of fixedly packoff of the fixed support of brake pipe and at least one pair of shutoff brake pipe mouth of pipe is installed on described main frame and the described slave, described packoff is provided with and fills wind apparatus, and the described wind apparatus that fills is connected with pressure-detecting device.During test, only brake pipe need be installed on the fixed support and fix, be the Programmable Logic Controller input control signal again, Programmable Logic Controller blocks the brake pipe mouth of pipe with regard to the may command packoff, because serving as wind apparatus is arranged on the packoff, can fill wind this moment for brake pipe, filling wind finishes, because packoff blocks the brake pipe mouth of pipe, realize pressurize, and then utilize pressure-detecting device detected pressures value, and the two or more force value by obtaining, Programmable Logic Controller is judged the brake pipe impermeability automatically, does not need to spend a large amount of manpowers and time to carry out loaded down with trivial details artificial installation, manually brush suds again, then slowly observe it and whether leak gas.It is simple, time saving and energy saving to compare present embodiment Installation And Test program.
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of the utility model;
Fig. 2 is the corresponding electric diagram of Fig. 1;
Fig. 3 is the corresponding schematic diagram of gas circuit of Fig. 2;
Fig. 4 is the structural representation of second kind of embodiment of the utility model;
The corresponding electric diagram of Fig. 5 Fig. 4;
Fig. 6 is the corresponding schematic diagram of gas circuit of Fig. 5;
Fig. 7 is the structural representation of the third embodiment of the utility model.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment 1:
With reference to Fig. 1, a kind of brake pipe impermeability experiment table, comprise main frame 1 and slave 2, on described main frame 1 lateral wall fixed support 3 is installed, with the corresponding fixed support 4 that is equipped with of described fixed support 3 sustained heights, described fixed support 3 and described fixed support 4 are fixed the two ends of brake pipe 5 on described slave 2 lateral walls.
On described main frame 1 madial wall cylinder 38 is installed, described cylinder 38 piston rods pass main frame 1 sidewall and reach main frame 1 outside, stretch out on the cylinder piston rod of main frame 1 sidewall the rubber blanket 39 that is used to block brake pipe 5 mouths of pipe is installed, be equipped with on the rubber blanket 39 and fill airduct 6, described airduct 6 mouths of pipe that fill cooperate with described brake pipe 5 mouths of pipe.
On described slave 2 madial walls cylinder 40 is installed, described cylinder 40 piston rods pass described slave 2 sidewalls and reach slave 2 outsides, reach on the cylinder piston rod in slave 2 outsides rubber blanket 41 that is used to block brake pipe 5 mouths of pipe is installed.
As preferred embodiment, described slave is equipped with universal wheel 8 under 2 chassis, can arbitrarily move, and this kind be the detection of the applicable polytype brake pipe of structure movably: as each existing different kinds of railways lorry vehicle brake pipes such as linear pattern, U types.
Please in the lump with reference to Fig. 2, the described airduct 6 that fills is provided with air intake valve 7, be used to control the air intake that fills airduct 6, and be provided with a pressure transducer 9 and be arranged on described airduct 6 mouths of pipe that fill, to survey the gaseous tension (not shown these two structures among Fig. 1) in the brake pipe 5, described air intake valve 7 is generally the two-bit triplet reversal valve.
Also comprise Programmable Logic Controller 10, the signal output part of described pressure transducer 9 connects described Programmable Logic Controller 10.The control end of described air intake valve 7 connects the output terminal of described Programmable Logic Controller 10.
As preferred embodiment, above-mentioned cylinder 38 and cylinder 40 are by hand control valve 11 controls.The control end of described hand control valve 11 connects the output terminal of described Programmable Logic Controller 10, and described hand control valve 11 connects described cylinder 38 and cylinder 40 respectively by gas circuit.Described hand control valve 11 is generally two position and four-way reversing valves.
As preferred embodiment, can also connect acoustic-optic alarm 12 at the output terminal of Programmable Logic Controller 10.If the brake pipe impermeability is defective, acoustic-optic alarm 12 sends alerting signal, plays suggesting effect.Described Programmable Logic Controller 10 can also connect mini-printer 13, to print various data.
In order after testing the brake pipe impermeability gas to be discharged, described filling on the airduct 6 can also be provided with exhaust valve 14, and the control end of described exhaust valve 14 connects the output terminal of described Programmable Logic Controller 10.Described exhaust valve 14 is generally the two-bit triplet reversal valve.
Refer again to Fig. 1, the control end of described air intake valve 7, acoustic-optic alarm 12 and exhaust valve 14 is integrated on the touch-screen 15, and described touch-screen 15 is arranged on the main frame 1.The control input end of described mini-printer 13 and data input pin also are arranged on the described touch-screen 15, as long as the input print data is restarted start button on touch-screen 15, then printable various data as time, pressure etc., have thoroughly been broken away from the restriction of data line.Described touch-screen 15 can also show testing result as time, pressure and experimental result display more intuitively.
As preferred embodiment, also can fill setting pressure table 53 on the airduct 6, if when pressure transducer 9 breaks down, can overhaul by tensimeter.
In conjunction with Fig. 3 brief description present embodiment gas circuit principle.
Source of the gas connects described air intake valve 7, and described air intake valve 7 connects described exhaust valve 14 by gas circuit, and described air intake valve 7 is connected described brake pipe 5, pressure transducer 9 and tensimeter 53 with described exhaust valve 14 respectively by gas circuit.Described source of the gas also connects described hand control valve 11, and described hand control valve 11 connects described cylinder 38 and cylinder 40 by gas circuit.
Below in conjunction with accompanying drawing 1, Fig. 2 and Fig. 3, be the bubble-tight principle of work of example explanation test with test linear pattern brake pipe impermeability:
When needing test, earlier described brake pipe 5 is installed on fixed support 3 and the fixed support 4, open hand control valve 11 then, control gas circuit trend, thereby control cylinder 38 and the reach of cylinder 40 piston rods, rubber blanket 39 and rubber blanket 41 reaches block 5 one mouths of pipe of brake pipe, fill airduct 6 reaches, the mouth of pipe extend in the brake pipe 5; Cylinder 40 piston rods reach simultaneously, rubber blanket 41 reaches block brake pipe 5 another mouths of pipe.This moment, air intake valve 7 was opened in Programmable Logic Controller 10 controls, filled airduct 6 and was brake pipe 5 inflations, after inflation finishes, air intake valve 7 is closed in Programmable Logic Controller 10 controls, and control and open pressure transducer 9, test first force value, pressure transducer 9 is passed to Programmable Logic Controller 10 with this force value.Because this moment, rubber blanket 39 and rubber blanket 41 blocked 5 two mouths of pipe of brake pipe, brake pipe 5 is in air-tight state, realizes brake pipe 5 pressurizes.After pressurize a period of time, pressure transducer 9 and tensimeter 53 record second force value, and pressure transducer 9 is passed to Programmable Logic Controller 10 with this second force value.
This moment, Programmable Logic Controller 10 obtained two pressure signals, judged the brake pipe impermeability: if two force value that record judge that then brake pipe 5 impermeability are intact in certain tolerance band, can use; If not in allowed band, illustrate that then brake pipe 5 impermeability are bad, acoustic-optic alarm 12 sends alerting signal, and prompting brake pipe impermeability is defective.
Certain above-mentioned pressure transducer 9 and Programmable Logic Controller can be realized by tensimeter 53 for 10 pages, can be by the variation of visual inspection force value, thus judge the impermeability of brake pipe.
Test after the impermeability Programmable Logic Controller 10 controls and open exhaust valve 14, gas is discharged, take off brake pipe 5, or use or do over again.
More than Ce Shi various data can show by touch-screen 15, as time, pressure and testing result etc., and can these data be printed with mini-printer 13, so that uses such as researchs.
If brake pipe is U type or other non-regular shapes, can regulate by mobile slave 2, this moveable carriage is because the movable impermeability that can conveniently survey some special shape brake pipes flexibly.
From the introduction of above-mentioned principle of work as can be known, only brake pipe need be installed on the fixed support and fix, open hand control valve 11, be Programmable Logic Controller 10 input control signals, be that may command is filled airduct 9 and filled wind for brake pipe 5, rubber blanket 39 and rubber blanket 41 envelopes are appealed to brake pipe 9 mouths of pipe, realize pressurize, utilize Programmable Logic Controller 10 pressure measurement again, just can judge brake pipe 5 impermeability, whether not needing to spend a large amount of manpowers and time carries out loaded down with trivial details artificial installation, manually brushes suds again, then slowly observe it and leak gas.It is simple, time saving and energy saving to compare present embodiment Installation And Test program.
Embodiment 2:
With reference to Fig. 4, a kind of brake pipe impermeability experiment table, comprise with embodiment 1 in identical main frame 1 and slave 2, on described main frame 1 lateral wall fixed support 16 and fixed support 17 are installed, on slave 2 lateral walls with the corresponding fixed support 18 that is equipped with of described fixed support 16 sustained heights, the corresponding fixed support 19 that is equipped with fixed support 17 sustained heights, the two ends that described fixed support 16 and fixed support 18 block brake pipe 20 respectively, the two ends that described fixed support 17 and fixed support 19 block brake pipe 21 respectively.
Correspondence is equipped with cylinder 42 on described main frame 1 madial wall, the piston rod of described cylinder 42 passes main frame 1 sidewall and reaches main frame 1 outside, stretch out on the cylinder piston rod of main frame 1 sidewall the rubber blanket 44 that is used to block brake pipe 20 is installed, on described rubber blanket 44, be equipped with and fill airduct 22, the described mouth of pipe that fills airduct 22 cooperates with described brake pipe 20 mouths of pipe, enters into brake pipe to guarantee the wind energy of filling airduct.
On described slave 2 madial walls cylinder 43 is installed, described cylinder 43 piston rods pass described slave 2 sidewalls and reach slave 2 outsides, reach on the cylinder piston rod in slave 2 outsides rubber blanket 45 that is used to block brake pipe 20 mouths of pipe is installed.
On described main frame 1 madial wall cylinder 46 is installed also, described cylinder 46 piston rods pass described main frame 1 sidewall and reach main frame 1 outside, reach on the cylinder piston rod of main frame 1 lateral wall the rubber blanket 47 that is used to block brake pipe 21 mouths of pipe is installed, be equipped with on the described rubber blanket 47 and fill airduct 23, the described mouth of pipe that fills airduct 23 cooperates with described brake pipe 21 mouths of pipe, enters into brake pipe 21 to guarantee the wind energy of filling airduct 23.
On described slave 2 madial walls cylinder 49 is installed, described cylinder piston rod passes described slave 2 sidewalls and reaches slave 2 outsides, reaches on the cylinder piston rod of slave 2 lateral walls the rubber blanket 50 that is used to block brake pipe 21 mouths of pipe is installed.
Adopt above-mentioned two pairs of fixed supports and two pairs of cylinders, but and independently working, can two brake pipes of a material loading, test has improved work efficiency relatively respectively.
As preferred embodiment, described slave is equipped with lifter 25 on 2 chassis, described lifter 25 tops connect hoistable platform 54 and described hoistable platform 55, described hoistable platform 54 connects described cylinder 43, described hoistable platform 55 connects described cylinder 49, the vertical line slideway 37 that is connected with of described hoistable platform 54 with hoistable platform 55 sides, described hoistable platform 54, hoistable platform 55 are used the control oscilaltion by lifter 25 and line slideway 37, can test the brake pipe of different shape as required, and not only be confined to linear pattern.
Please in the lump with reference to Fig. 5, the described airduct 21 that fills is provided with air intake valve 24, is used to control the described air intake that fills airduct, and is provided with a pressure transducer 26 and is arranged on described airduct 22 mouths of pipe that fill, to survey the gaseous tension in the brake pipe 20.(not shown air intake valve and pressure transducer among Fig. 4)
The described airduct 23 that fills is provided with air intake valve 25, is used to control the described air intake that fills airduct, and is provided with a pressure transducer 27 and is arranged on described airduct 23 air inlets that fill, to survey the gaseous tension in the brake pipe 21.(not shown air intake valve and pressure transducer among Fig. 4)
Described air intake valve 24 and air intake valve 25 are generally the two-bit triplet reversal valve.
Also comprise Programmable Logic Controller 28, described pressure transducer 26 is connected the signal input part of described Programmable Logic Controller 28 with the signal output part of pressure transducer 27.Described air intake valve 24 is connected the output terminal of described Programmable Logic Controller 28 with the control end of air intake valve 25.
As preferred embodiment, above-mentioned cylinder 42 and cylinder 46 are by hand control valve 29 controls, described cylinder 43 and cylinder 49 are by hand control valve 30 control reaches, described hand control valve 29 connects described cylinder 42 and cylinder 46 respectively by gas circuit, and described hand control valve 30 connects described cylinder 42 and cylinder 46 respectively by gas circuit.Described hand control valve 29 and hand control valve 30 are generally two position and four-way reversing valves.
As preferred embodiment, can also connect acoustic-optic alarm 31 at the signal output part of Programmable Logic Controller 28, when the brake pipe impermeability of being checked was defective, acoustic-optic alarm 31 sent alerting signal, plays suggesting effect.Described Programmable Logic Controller 28 can also connect mini-printer 32, to print various data.
The described airduct 22 that fills can also be provided with exhaust valve 33 and exhaust valve 34 with filling on the airduct 23, described exhaust valve 33 is connected the output terminal of described Programmable Logic Controller 28 with the control end of exhaust valve 34.
Refer again to Fig. 4, the control end of described air intake valve 24 and air intake valve 25, acoustic-optic alarm 31, exhaust valve 33 and exhaust valve 34 is integrated on the touch-screen 35, the control knob of described mini-printer 32 and data input pin also are arranged on the described touch-screen 35, as long as the input print data is restarted start button on touch-screen 35, then printable various data, as time, pressure etc., thoroughly broken away from the restriction of data line.Described touch-screen 35 can also show testing result as time, pressure and experimental result display more intuitively.
With reference to Fig. 6, as preferred embodiment, can also fill airduct 22 and fill setting pressure table 51 and tensimeter 52 on the airduct 23, the sensitivity of maintenance pressure transducer is used.
Refer again to Fig. 6, brief description present embodiment gas circuit principle.
Source of the gas connects described air intake valve 24 and air intake valve 25, and described air intake valve 24 connects described exhaust valve 33 by gas circuit, and described air intake valve 24 is connected described brake pipe 20, pressure transducer 26 and tensimeter 51 with described exhaust valve 33 respectively by gas circuit; Described air intake valve 25 is connected described brake pipe 21, pressure transducer 27 and tensimeter 52 with described exhaust valve 34 respectively by gas circuit.
Described source of the gas also connects described hand control valve 29, and described hand control valve 29 connects described cylinder 42 and cylinder 43 by gas circuit; Source of the gas also connects described hand control valve 30, and described hand control valve 30 connects described cylinder 46 and cylinder 49 by gas circuit.
From the introduction of above-mentioned principle of work as can be known, only brake pipe need be installed on the fixed support and fix, open hand control valve 29 and hand control valve 30, be Programmable Logic Controller 28 input control signals, be that may command is filled airduct 22 and how to be filled airduct 23 and fill wind for brake pipe 0 and brake pipe 21, all brake pipe 20 mouths of pipe of rubber blanket 44 and rubber blanket 45 envelopes, all brake pipe 21 mouths of pipe of rubber blanket 47 and rubber blanket 50 envelopes are realized pressurize, utilize Programmable Logic Controller 28 pressure measurement again, just can judge brake pipe 20 and brake pipe 21 impermeability, whether not needing to spend a large amount of manpowers and time carries out loaded down with trivial details artificial installation, manually brushes suds again, then slowly observe it and leak gas.It is simple, time saving and energy saving to compare present embodiment Installation And Test program.
With reference to Fig. 7,, also universal wheel 36 can be installed under slave 2 chassis for embodiment 2, present embodiment can be realized the difformity according to the test brake pipe, regulate slave 2 and all around move, all right oscilaltion, and also present embodiment also can realize testing simultaneously two brake pipes.Its pneumatic principle and electrical control are identical with embodiment 2, do not give unnecessary details at this.
Certainly, present embodiment only describes to have two pairs of four support bracket fastened situations.In the scope that equipment allows, also can be provided with some to fixed support and corresponding cylinder with fill airduct etc.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201460489U CN201034798Y (en) | 2007-03-30 | 2007-03-30 | Braking pipe air tightness test-bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201460489U CN201034798Y (en) | 2007-03-30 | 2007-03-30 | Braking pipe air tightness test-bed |
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| Publication Number | Publication Date |
|---|---|
| CN201034798Y true CN201034798Y (en) | 2008-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201460489U CN201034798Y (en) | 2007-03-30 | 2007-03-30 | Braking pipe air tightness test-bed |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799350A (en) * | 2010-03-04 | 2010-08-11 | 南京钢铁股份有限公司 | Rapid leakage detecting method for roller hearth type non-oxidation furnace radiating pipes in batch |
| CN102141460A (en) * | 2011-02-17 | 2011-08-03 | 大连三高集团有限公司 | Airtightness test machine for titanium welded pipes |
| CN102494854A (en) * | 2011-11-24 | 2012-06-13 | 温岭德光自动化设备有限公司 | Leakage and plugging detection apparatus of infusion set |
| CN102507109A (en) * | 2011-11-02 | 2012-06-20 | 天津鹏翎胶管股份有限公司 | One-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method |
| CN102539089A (en) * | 2011-12-26 | 2012-07-04 | 大连三高科技发展有限公司 | Air tightness detection device and detection method thereof |
| CN103134646A (en) * | 2011-11-23 | 2013-06-05 | 比亚迪股份有限公司 | Water tightness detection system of pipeline and detection method thereof |
| CN104089748A (en) * | 2014-07-31 | 2014-10-08 | 上海远梓电子科技有限公司 | Constant-pressure detection testing machine for air pressure of braking hose |
| CN104236807A (en) * | 2014-10-04 | 2014-12-24 | 高满珍 | Operating unit for test of hydraulic brake hoses |
| CN104236822A (en) * | 2014-10-04 | 2014-12-24 | 高满珍 | Pressure measurer for hydraulic brake hoses |
| CN105181260A (en) * | 2015-09-28 | 2015-12-23 | 合肥长城制冷科技有限公司 | Novel fin evaporator leak detection line |
| CN105716804A (en) * | 2016-02-23 | 2016-06-29 | 朱隆娅 | Leakage test tool system using CCD visual system |
| CN105866139A (en) * | 2016-06-15 | 2016-08-17 | 郑州铁路职业技术学院 | Detecting device special for inner surface mass of brake air duct between cars |
| CN109470426A (en) * | 2018-11-27 | 2019-03-15 | 浙江华昊建筑材料检测有限公司 | Door and window air tightness detection equipment |
-
2007
- 2007-03-30 CN CNU2007201460489U patent/CN201034798Y/en not_active IP Right Cessation
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799350B (en) * | 2010-03-04 | 2011-07-20 | 南京钢铁股份有限公司 | Rapid leakage detecting method for roller hearth type non-oxidation furnace radiating pipes in batch |
| CN101799350A (en) * | 2010-03-04 | 2010-08-11 | 南京钢铁股份有限公司 | Rapid leakage detecting method for roller hearth type non-oxidation furnace radiating pipes in batch |
| CN102141460A (en) * | 2011-02-17 | 2011-08-03 | 大连三高集团有限公司 | Airtightness test machine for titanium welded pipes |
| CN102507109A (en) * | 2011-11-02 | 2012-06-20 | 天津鹏翎胶管股份有限公司 | One-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method |
| CN103134646A (en) * | 2011-11-23 | 2013-06-05 | 比亚迪股份有限公司 | Water tightness detection system of pipeline and detection method thereof |
| CN102494854A (en) * | 2011-11-24 | 2012-06-13 | 温岭德光自动化设备有限公司 | Leakage and plugging detection apparatus of infusion set |
| CN102539089A (en) * | 2011-12-26 | 2012-07-04 | 大连三高科技发展有限公司 | Air tightness detection device and detection method thereof |
| CN102539089B (en) * | 2011-12-26 | 2014-11-05 | 大连三高科技发展有限公司 | Air tightness detection device and detection method thereof |
| CN104089748A (en) * | 2014-07-31 | 2014-10-08 | 上海远梓电子科技有限公司 | Constant-pressure detection testing machine for air pressure of braking hose |
| CN104236822B (en) * | 2014-10-04 | 2016-08-24 | 高满珍 | The manograph of hydraulic-brake hose |
| CN104236822A (en) * | 2014-10-04 | 2014-12-24 | 高满珍 | Pressure measurer for hydraulic brake hoses |
| CN104236807B (en) * | 2014-10-04 | 2016-08-24 | 高满珍 | Working device for hydraulic-brake hose test |
| CN104236807A (en) * | 2014-10-04 | 2014-12-24 | 高满珍 | Operating unit for test of hydraulic brake hoses |
| CN105181260A (en) * | 2015-09-28 | 2015-12-23 | 合肥长城制冷科技有限公司 | Novel fin evaporator leak detection line |
| CN105716804A (en) * | 2016-02-23 | 2016-06-29 | 朱隆娅 | Leakage test tool system using CCD visual system |
| CN105866139A (en) * | 2016-06-15 | 2016-08-17 | 郑州铁路职业技术学院 | Detecting device special for inner surface mass of brake air duct between cars |
| CN105866139B (en) * | 2016-06-15 | 2018-08-17 | 郑州铁路职业技术学院 | Braking air pipe between vehicles inner surface quality special detection device |
| CN109470426A (en) * | 2018-11-27 | 2019-03-15 | 浙江华昊建筑材料检测有限公司 | Door and window air tightness detection equipment |
| CN109470426B (en) * | 2018-11-27 | 2020-10-23 | 浙江华昊建筑材料检测有限公司 | Door and window air tightness detection equipment |
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Assignee: Qiqihar Jinche Industry Company Assignor: Qiqihar Rail Traffic Equipment Co., Ltd. Contract record no.: 2012990000617 Denomination of utility model: Adaptive sealing structure of air tightness test stand for brake pipes of railway trucks Granted publication date: 20080312 License type: Exclusive License Record date: 20120822 |
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| CX01 | Expiry of patent term |
Granted publication date: 20080312 |
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| CX01 | Expiry of patent term |