CN102128702A - Device and method for testing pneumatic pressure - Google Patents
Device and method for testing pneumatic pressure Download PDFInfo
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- CN102128702A CN102128702A CN201010022992XA CN201010022992A CN102128702A CN 102128702 A CN102128702 A CN 102128702A CN 201010022992X A CN201010022992X A CN 201010022992XA CN 201010022992 A CN201010022992 A CN 201010022992A CN 102128702 A CN102128702 A CN 102128702A
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Abstract
The invention provides a device and a method for testing a pneumatic pressure. The device comprises a test control module, a pipeline space distribution module, a tested part placing module and an electric cabinet module, wherein the pipeline space distribution module comprises an air source supply device, a filter, a high-pressure regulator, a low-pressure regulator and a valve island; the tested part placing module is used for placing a tested part and connected with a third reversing valve and a fourth reversing valve respectively; the electric cabinet module comprises a programmable logic controller (PLC); and the PLC is connected with the test control module and the pipeline space distribution module. The PLC is adopted for automatic operation, so errors caused by manual operation can be reduced, and manpower resources are saved; moreover, the invention also provides various pressure test methods, which meet various test requirements.
Description
Technical field
The present invention relates to the pressure test field, be specifically related to a kind of Pneumatic pressure testing device and method.
Background technology
Present Pneumatic pressure testing instrument comprises air compressor module and pressure adjusting module, when using said apparatus to carry out Pneumatic pressure testing, all need operator's manual operation, use air compressor module and pressure adjusting module can provide pneumatic high-voltage (10bar) and low pressure (5bar) to give test module, though the quantity that this method helps reducing the cost of equipment and reduced the required equipment in perform region, but, but exist significant disadvantages.At first, in the Pneumatic pressure testing process, if high pressure and time spent low-pressure pneumatic pressure while then need to switch pressure adjusting module back and forth, process too bothers; Secondly, this Pneumatic pressure testing instrument can only provide the pressure test of the single mode under high pressure and the low pressure situation, and means of testing is not abundant, and alternative is not strong; At last, the pressure test connector of this Pneumatic pressure testing instrument is single.
Summary of the invention
Can't robotization and shortcoming such as test mode is single in order to overcome the Pneumatic pressure testing device that exists in the prior art, the invention provides a kind of Pneumatic pressure testing device and method that can realize automation mechanized operation and possess multiple pressure test mode.
To achieve these goals, the present invention proposes a kind of Pneumatic pressure testing device, comprising:
Testing control module;
The pipeline spatial distribution module comprises:
The source of the gas feeding mechanism;
High pressure regulator links to each other with described source of the gas feeding mechanism and described testing control module;
Low-pressure regulator links to each other with described source of the gas feeding mechanism and described testing control module;
The valve island, comprise first reversal valve, second reversal valve, the 3rd reversal valve and the 4th reversal valve, described first reversal valve links to each other respectively with described high pressure regulator, described low-pressure regulator, described second reversal valve links to each other with described first reversal valve, and described the 3rd reversal valve links to each other with described second reversal valve;
The unit under test placement module is used to place unit under test, and described unit under test placement module links to each other respectively with described the 3rd reversal valve, described the 4th reversal valve;
The electric cabinet module comprises the PLC controller, and described PLC controller all links to each other with described testing control module, described pipeline spatial distribution module.
Optionally, described testing control module comprises a plurality of test control knobs, pressure pattern button, power light and test counter, wherein said a plurality of test control knob, power light, test counter is equal links to each other with described PLC controller, and described pressure pattern button links to each other with described high pressure regulator, described low-pressure regulator.
Optionally, described a plurality of test control knobs comprise voltage-withstand test control knob, pressurize test control knob and alternating pressure test control knob, and described pressure pattern button comprises high voltage control button and low voltage control button.
Optionally, described first reversal valve and described the 4th reversal valve are single automatically controlled two-bit triplet reversal valve, and described second reversal valve and described the 3rd reversal valve are single automatically controlled 2/2-way reversal valve.
Optionally, described the 3rd reversal valve, described the 4th reversal valve all link to each other with described unit under test placement module by the hydraulic quick coupler that is arranged on the described unit under test placement module.
Optionally, the interface of described fast adapter is a multitube footpath test interface.
Optionally, described management spatial distribution module also comprises a filtrator, and described filtrator links to each other with described source of the gas feeding mechanism, offers described high pressure regulator and described low-pressure regulator after the gas filtration with described source of the gas feeding mechanism.
Optionally, described management spatial distribution module also comprises first tensimeter, second tensimeter and the 3rd tensimeter, described first tensimeter links to each other with described high pressure regulator, described second tensimeter links to each other with described low-pressure regulator, and described the 3rd tensimeter is arranged between described the 3rd reversal valve and the described unit under test placement module.
Optionally, described electric cabinet module also comprises total power switch and fuse, and described total power switch, the equal and described PLC controller of described fuse link to each other.
To achieve these goals, the present invention also proposes a kind of Pneumatic pressure testing method, it is characterized in that: may further comprise the steps:
Open the source of the gas feeding mechanism;
The selection pressure pattern judges whether to be high pressure mode, if then connect high pressure regulator; If not, then judge whether to be low-voltage, if then connect low-pressure regulator; If not, then change alarm over to and handle, reselect pressure pattern;
Select test pattern, judge whether to be voltage-withstand test, if finish test behind the execution voltage-withstand test; If not, then continue to judge whether to be the pressurize test, if carry out pressurize test back and finish test; If not, then continue to judge whether to be the alternating pressure test, if then carry out alternating pressure test back and finish test; If not, then finish test.
Optionally, connecting described high pressure regulator is that the PLC controller is switched on to first reversal valve.
Optionally, connecting described low-pressure regulator is that the PLC controller cuts off the power supply to first reversal valve.
Optionally, described voltage-withstand test is that the PLC controller is to the 4th reversal valve and the energising of second reversal valve.
Optionally, described pressurize test for the PLC controller to the 4th reversal valve and the energising of second reversal valve, after waiting to manage the 3rd tensimeter in the spatial distribution module and showing that pressure reaches set value, to described second reversal valve outage.
Optionally, the test of described alternating pressure for the PLC controller to the 4th reversal valve and the energising of second reversal valve, judge whether the alternating pressure test semiperiod arrive, if not, then postpone processing; If, continue then to judge whether this cycle of release of pressure arrive, if not, then the PLC controller is switched on to the 3rd reversal valve; If then the PLC controller judges whether to finish test at last not to the energising of the 3rd reversal valve, if then finish test; If not, then change over to and judge whether the alternating pressure test arrives the semiperiod.
The beneficial effect of a kind of Pneumatic pressure testing device of the present invention and method mainly shows: the present invention controls high pressure regulator and low-pressure regulator by using the PLC controller, thereby has realized the automation mechanized operation of Pneumatic pressure testing device; The present invention also provides voltage-withstand test, pressurize test and the three kinds of pressure test modes of alternating pressure test under the high and low pressure test pattern, can be applicable to multiple testing requirement.
Description of drawings
Fig. 1 is the apparatus structure block diagram of Pneumatic pressure testing device of the present invention and method.
Fig. 2 is the apparatus structure synoptic diagram of Pneumatic pressure testing device of the present invention and method.
Fig. 3 is the unit under test placement module interface synoptic diagram of Pneumatic pressure testing device of the present invention and method.
Fig. 4 is the inner connection diagram of the device of Pneumatic pressure testing device of the present invention and method.
Fig. 5 is the test flow chart of Pneumatic pressure testing device of the present invention and method.
Fig. 6 is the voltage-withstand test process flow diagram of Pneumatic pressure testing device of the present invention and method.
Fig. 7 is the pressurize test flow chart of Pneumatic pressure testing device of the present invention and method.
Fig. 8 is the Pneumatic pressure testing process flow diagram of Pneumatic pressure testing device of the present invention and method.
Embodiment
Below, the present invention is further illustrated in conjunction with the accompanying drawings.
At first, please refer to Fig. 1, Fig. 1 is the apparatus structure block diagram of Pneumatic pressure testing device of the present invention and method, from the figure as can be seen, a kind of Pneumatic pressure testing device 200 of the present invention comprises four parts, is respectively: testing control module 220, pipeline spatial distribution module 210, unit under test placement module 230 and electric cabinet module 240.
Pipeline spatial distribution module 210 is agent structures of whole Pneumatic pressure testing device, and concrete structure please refer to Fig. 2, and Fig. 2 comprises: source of the gas feeding mechanism 1 for the apparatus structure synoptic diagram of Pneumatic pressure testing device of the present invention and method; High pressure regulator 3 links to each other with described source of the gas feeding mechanism 1 and described testing control module 220, and in fact high pressure regulator 3 is to link to each other with high voltage control button in the testing control module 220; Low-pressure regulator 8 links to each other with described source of the gas feeding mechanism 1 and described testing control module 220, and in fact low-pressure regulator 8 is to link to each other with low voltage control button in the testing control module 220; Valve island 53, comprise first reversal valve 5, second reversal valve 10, the 3rd reversal valve 51 and the 4th reversal valve 7, described first reversal valve 5 links to each other respectively with described high pressure regulator 3, described low-pressure regulator 8, described second reversal valve 10 links to each other with described first reversal valve 5, described the 3rd reversal valve 51 links to each other with described second reversal valve 10, described first reversal valve 5 and described the 4th reversal valve 7 are single automatically controlled two-bit triplet reversal valve, and described second reversal valve 10 and described the 3rd reversal valve 51 are single automatically controlled 2/2-way reversal valve.Described management spatial distribution module also comprises a filtrator 2, and described filtrator 2 links to each other with described source of the gas feeding mechanism 1, offers described high pressure regulator 3 and described low-pressure regulator 8 after the gas filtration with described source of the gas feeding mechanism 1.Described management spatial distribution module 210 also comprises first tensimeter 4, second tensimeter 9 and the 3rd tensimeter 6, and described first tensimeter 4 links to each other with described high pressure regulator 3, and described second tensimeter 9 links to each other with described low-pressure regulator 8.Testing control module 220 also comprises DPL display and hummer, and the DPL display is used to show alarm sign indicating number or error code, and hummer then is used for alarm output.
Unit under test placement module 230, be used to place unit under test, described unit under test placement module 230 and described the 3rd reversal valve 51, described the 4th reversal valve 7 links to each other respectively, described the 3rd tensimeter 6 is arranged between described the 3rd reversal valve 51 and the described unit under test placement module 230, described the 3rd reversal valve 51, described the 4th reversal valve 7 all links to each other with described unit under test placement module 230 by the hydraulic quick coupler 52 that is arranged on the described unit under test placement module 230, the interface of hydraulic quick coupler 52 can be set to the test interface of plurality of specifications size, it is multitube footpath test interface, structural representation please refer to Fig. 3, Fig. 3 is the unit under test placement module interface synoptic diagram of Pneumatic pressure testing device of the present invention and method, concrete structure realize to be gone up an available branch air parcel and total source of the gas is extended out is divided into several sources of the gas, the pipe interface that props up source of the gas can be the hickey form of plurality of specifications size, can join the hydraulic quick coupler of multiple latus rectum simultaneously according to thread size.Hydraulic quick coupler from the different size hickey to multiple latus rectum is so just arranged, formed a series of multitube footpath test interface.So just be easy to be connected, also be convenient to mounting or dismounting simultaneously with interface on the unit under test.Rapid-acting coupling is a kind of pipe joint that does not need tool using can realize rapid dismounting again, and it has advantages such as compact conformation, volume be little, in light weight, high pressure resistant, interchangeable.
Then, please refer to Fig. 5, Fig. 5 is the test flow chart of Pneumatic pressure testing device of the present invention and method, may further comprise the steps: step 11: open the source of the gas feeding mechanism; Step 12: selection pressure pattern; Step 13: judge whether to be high pressure mode, if then change step 14 over to: connect high pressure regulator, the method for connecting high pressure regulator comprises: press the high voltage control button in the testing control module, the PLC controller is switched on to first reversal valve; If not, then change step 15 over to: judge whether to be low-voltage, if, then change step 17 over to: connect low-pressure regulator, the method of connecting low-pressure regulator comprises: press the low voltage control button in the testing control module, the PLC controller cuts off the power supply to first reversal valve, if not, then change step 16 over to: alarm changes step 12 over to: the selection pressure pattern after handling again; Change step 18 over to: select test pattern; Step 19: judge whether to be voltage-withstand test, if, then change step 20 over to: change step 25 over to after carrying out voltage-withstand test: finish test, concrete voltage-withstand test flow process will be done detailed elaboration in the back, if not, then change step 21 over to: judge whether to be the pressurize test, if, then change step 22 over to: change step 25 over to after carrying out the pressurize test: finish test, if not, then change step 23 over to: judge whether to be the alternating pressure test, if, then change step 24 over to: change step 25 over to after carrying out the alternating pressure test: finish test, if not, then change step 25 over to: finish test.
Described voltage-withstand test comprises: press the voltage-withstand test control knob in the testing control module, the PLC controller is to the 4th reversal valve and the energising of second reversal valve.Concrete flow process please refer to Fig. 6, and Fig. 6 may further comprise the steps: step 31: press the voltage-withstand test control knob in the testing control module for the voltage-withstand test process flow diagram of Pneumatic pressure testing device of the present invention and method; Step 32:PLC controller is switched on to the 4th reversal valve, and the 4th reversal valve is by discharging gas circuit; Step 33:PLC controller is switched on to second reversal valve, and second reversal valve is connected the source of the gas gas circuit; Step 34: carry out voltage-withstand test; Step 35: judge whether to occur test process and switch mistakes such as pressure pattern, if then change step 36 over to: fault processing, the DPL display shows error code, changes step 41 afterwards over to: finish test; If not, then change step 37 over to: test process whether occurs and press alarms such as other buttons, if then change step 38 over to: alarm is handled, the alarm processing mode shows the alarm sign indicating number for the DPL display, hummer carries out alarm output, changes step 41 afterwards over to: finish test, if not, then change step 39 over to: judge whether to finish test, if then change step 40 over to: the 4th reversal valve and second reversal valve change step 41 over to after returning to the acquiescence attitude: finish test; If not, then change step 34 over to: carry out voltage-withstand test.
Described pressurize test comprises: press the pressurize test control knob in the testing control module, the PLC controller is to the 4th reversal valve and the energising of second reversal valve, after waiting to manage the 3rd tensimeter in the spatial distribution module and showing that pressure reaches set value, to described second reversal valve outage.Concrete flow process please refer to Fig. 7, and Fig. 7 is the pressurize test flow chart of Pneumatic pressure testing device of the present invention and method, may further comprise the steps: step 111: press the pressurize test control knob in the testing control module; Step 112:PLC controller is switched on to the 4th reversal valve, and the 4th reversal valve is by discharging gas circuit; Step 113:PLC controller is switched on to second reversal valve, and second reversal valve is connected the source of the gas gas circuit; Step 114: after waiting to manage the 3rd tensimeter in the spatial distribution module and showing that pressure reaches set value, to described second reversal valve outage; Step 115: carry out the pressurize test; Step 116: judge whether to occur test process and switch mistakes such as pressure pattern, if, then change step 118 over to: after the fault processing, change step 121 over to: finish test, if not, then change step 117 over to: judge whether to occur test process and press alarms such as other buttons, if then change step 119 over to: after alarm is handled, change step 121 over to: finish test, if not, then change step 120 over to: whether finish test, if, then change step 121 over to: after the 4th reversal valve and second reversal valve return to the acquiescence attitude, change step 121 over to: finish test, if not, then change step 115 over to: carry out the pressurize test.
Described alternating pressure test comprises: the alternation of pressing in the testing control module is pressed the test control knob, the PLC controller is to the 4th reversal valve and the energising of second reversal valve, judge whether the alternating pressure test semiperiod arrives, if not, after then postponing to handle, if continue then to judge whether this cycle of release of pressure arrive, if not, then the PLC controller is switched on to the 3rd reversal valve, if then the PLC controller judges whether to finish test at last not to the energising of the 3rd reversal valve, if, then finish test, if not, then change over to and judge whether the alternating pressure test semiperiod arrives.Concrete flow process please refer to Fig. 8, and Fig. 8 is the Pneumatic pressure testing process flow diagram of Pneumatic pressure testing device of the present invention and method, may further comprise the steps: step 131: press the alternating pressure test control knob in the testing control module; Step 132:PLC controller is switched on to the 4th reversal valve, and the 4th reversal valve is by discharging gas circuit; Step 133:PLC controller is switched on to second reversal valve, and second reversal valve is connected the source of the gas gas circuit; Step 135: judge whether to occur test process and switch mistakes such as pressure pattern, if then change step 136 over to: after the fault processing, change step 146 over to: finish test; If not, then change step 137 over to: judge whether to occur test process and press alarms such as other buttons, if, then change step 138 over to: after alarm is handled, change step 146 over to: finish test, if not, then change step 139 over to: judge whether the alternating pressure test semiperiod arrives, if not, then change step 140 over to: postpone to handle, until alternating pressure test period arrival, if, then change step 141 over to: judge whether alternating pressure test period arrives, if, then changing step 142:PLC controller over to does not switch on to the 3rd reversal valve, the 3rd reversal valve is connected the release gas circuit, to the test component relief pressure by the source of the gas gas circuit, if not, then change step 143:PLC controller over to the 3rd reversal valve is switched on, connect the source of the gas gas circuit, by discharging gas circuit, test component is exerted pressure, all change step 144 afterwards over to: judge whether to finish test, if not, then change step 135 again over to: judge whether to occur test process and switch mistakes such as modular pressure, if then turn to step 145: second reversal valve, the 3rd reversal valve and the 4th reversal valve return to default conditions; Step 146: finish test.
The default conditions of first reversal valve are energising among the present invention, select the high-pressure air source gas circuit, and the default conditions of second reversal valve are outage, by the source of the gas gas circuit, the default conditions of the 3rd reversal valve are outage, by the source of the gas gas circuit, the default conditions of the 4th reversal valve are outage, connect to discharge gas circuit.
Though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (15)
1. Pneumatic pressure testing device is characterized in that comprising:
Testing control module;
The pipeline spatial distribution module comprises:
The source of the gas feeding mechanism;
High pressure regulator links to each other with described source of the gas feeding mechanism and described testing control module;
Low-pressure regulator links to each other with described source of the gas feeding mechanism and described testing control module;
The valve island, comprise first reversal valve, second reversal valve, the 3rd reversal valve and the 4th reversal valve, described first reversal valve links to each other respectively with described high pressure regulator, described low-pressure regulator, described second reversal valve links to each other with described first reversal valve, and described the 3rd reversal valve links to each other with described second reversal valve;
The unit under test placement module is used to place unit under test, and described unit under test placement module links to each other respectively with described the 3rd reversal valve, described the 4th reversal valve;
The electric cabinet module comprises the PLC controller, and described PLC controller all links to each other with described testing control module, described pipeline spatial distribution module.
2. Pneumatic pressure testing device according to claim 1, it is characterized in that: described testing control module comprises a plurality of test control knobs, pressure pattern button, power light and test counter, wherein said a plurality of test control knob, power light, test counter is equal links to each other with described PLC controller, and described pressure pattern button links to each other with described high pressure regulator, described low-pressure regulator.
3. Pneumatic pressure testing device according to claim 2, it is characterized in that: described a plurality of test control knobs comprise voltage-withstand test control knob, pressurize test control knob and alternating pressure test control knob, and described pressure pattern button comprises high voltage control button and low voltage control button.
4. Pneumatic pressure testing device according to claim 1 is characterized in that: described first reversal valve and described the 4th reversal valve are single automatically controlled two-bit triplet reversal valve, and described second reversal valve and described the 3rd reversal valve are single automatically controlled 2/2-way reversal valve.
5. Pneumatic pressure testing device according to claim 1 is characterized in that: described the 3rd reversal valve, described the 4th reversal valve all link to each other with described unit under test placement module by the hydraulic quick coupler that is arranged on the described unit under test placement module.
6. Pneumatic pressure testing device according to claim 5 is characterized in that: the interface of described fast adapter is a multitube footpath test interface.
7. Pneumatic pressure testing device according to claim 1, it is characterized in that: described management spatial distribution module also comprises a filtrator, described filtrator links to each other with described source of the gas feeding mechanism, offers described high pressure regulator and described low-pressure regulator after the gas filtration with described source of the gas feeding mechanism.
8. Pneumatic pressure testing device according to claim 1, it is characterized in that: described management spatial distribution module also comprises first tensimeter, second tensimeter and the 3rd tensimeter, described first tensimeter links to each other with described high pressure regulator, described second tensimeter links to each other with described low-pressure regulator, and described the 3rd tensimeter is arranged between described the 3rd reversal valve and the described unit under test placement module.
9. Pneumatic pressure testing device according to claim 1 is characterized in that: described electric cabinet module also comprises total power switch and fuse, and described total power switch, the equal and described PLC controller of described fuse link to each other.
10. Pneumatic pressure testing method is characterized in that: may further comprise the steps:
Open the source of the gas feeding mechanism;
The selection pressure pattern judges whether to be high pressure mode, if then connect high pressure regulator; If not, then judge whether to be low-voltage, if then connect low-pressure regulator; If not, then change alarm over to and handle, reselect pressure pattern;
Select test pattern, judge whether to be voltage-withstand test, if finish test behind the execution voltage-withstand test; If not, then continue to judge whether to be the pressurize test, if carry out pressurize test back and finish test; If not, then continue to judge whether to be the alternating pressure test, if then carry out alternating pressure test back and finish test; If not, then finish test.
11. Pneumatic pressure testing method according to claim 10 is characterized in that: connecting described high pressure regulator is that the PLC controller is switched on to first reversal valve.
12. Pneumatic pressure testing method according to claim 10 is characterized in that: connecting described low-pressure regulator is that the PLC controller cuts off the power supply to first reversal valve.
13. Pneumatic pressure testing method according to claim 10 is characterized in that: described voltage-withstand test is that the PLC controller is to the 4th reversal valve and the energising of second reversal valve.
14. Pneumatic pressure testing method according to claim 10, it is characterized in that: described pressurize test is switched on to the 4th reversal valve and second reversal valve for the PLC controller, after waiting to manage the 3rd tensimeter in the spatial distribution module and showing that pressure reaches set value, to described second reversal valve outage.
15. Pneumatic pressure testing method according to claim 10 is characterized in that: the test of described alternating pressure for the PLC controller to the 4th reversal valve and the energising of second reversal valve, judge whether the alternating pressure test semiperiod arrive, if not, then postpone processing; If, continue then to judge whether this cycle of release of pressure arrive, if not, then the PLC controller is switched on to the 3rd reversal valve; If then the PLC controller judges whether to finish test at last not to the energising of the 3rd reversal valve, if then finish test; If not, then change over to and judge whether the alternating pressure test arrives the semiperiod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010022992XA CN102128702B (en) | 2010-01-19 | 2010-01-19 | Device and method for testing pneumatic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010022992XA CN102128702B (en) | 2010-01-19 | 2010-01-19 | Device and method for testing pneumatic pressure |
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| CN102128702A true CN102128702A (en) | 2011-07-20 |
| CN102128702B CN102128702B (en) | 2012-11-14 |
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| CN201010022992XA Active CN102128702B (en) | 2010-01-19 | 2010-01-19 | Device and method for testing pneumatic pressure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317375A (en) * | 2013-07-01 | 2013-09-25 | 宝鸡市龙腾机械制造有限公司 | Braking system for realizing C-axle double-way pneumatic operation of numerically-controlled machine tool |
| CN105806556A (en) * | 2016-05-06 | 2016-07-27 | 武汉航空仪表有限责任公司 | Device and method for pressure sensor alternating test |
| CN107796612A (en) * | 2017-10-23 | 2018-03-13 | 中车长春轨道客车股份有限公司 | The portable stopping sliding door air supply device of CRH5 EMUs |
| CN111060297A (en) * | 2019-12-06 | 2020-04-24 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Enhanced test equipment, method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1228444A (en) * | 1967-04-12 | 1971-04-15 | ||
| CN2687647Y (en) * | 2004-03-24 | 2005-03-23 | 曾开儒 | Train brake system wind pressure integrated detecting device |
-
2010
- 2010-01-19 CN CN201010022992XA patent/CN102128702B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317375A (en) * | 2013-07-01 | 2013-09-25 | 宝鸡市龙腾机械制造有限公司 | Braking system for realizing C-axle double-way pneumatic operation of numerically-controlled machine tool |
| CN105806556A (en) * | 2016-05-06 | 2016-07-27 | 武汉航空仪表有限责任公司 | Device and method for pressure sensor alternating test |
| CN107796612A (en) * | 2017-10-23 | 2018-03-13 | 中车长春轨道客车股份有限公司 | The portable stopping sliding door air supply device of CRH5 EMUs |
| CN111060297A (en) * | 2019-12-06 | 2020-04-24 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Enhanced test equipment, method and device |
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| Publication number | Publication date |
|---|---|
| CN102128702B (en) | 2012-11-14 |
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Address after: 201203 Zhangjiang High Tech Park, Shanghai, Zhang Dong Road, No. 1525 Patentee after: Shanghai microelectronics equipment (Group) Limited by Share Ltd Address before: 201203 Zhangjiang High Tech Park, Shanghai, Zhang Dong Road, No. 1525 Patentee before: Shanghai Micro Electronics Equipment Co., Ltd. |
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