CN113984417A - Rail vehicle compressed air humidity detection and display device - Google Patents
Rail vehicle compressed air humidity detection and display device Download PDFInfo
- Publication number
- CN113984417A CN113984417A CN202111449224.7A CN202111449224A CN113984417A CN 113984417 A CN113984417 A CN 113984417A CN 202111449224 A CN202111449224 A CN 202111449224A CN 113984417 A CN113984417 A CN 113984417A
- Authority
- CN
- China
- Prior art keywords
- compressed air
- humidity
- box body
- railway vehicle
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 238000012360 testing method Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 10
- 239000003973 paint Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention is suitable for the technical field of railway vehicle detection, and provides a railway vehicle compressed air humidity detection and display device which comprises an air pipeline and a train control and management system, wherein a compressed air humidity detection module is arranged on the air pipeline, the compressed air humidity detection module is electrically connected with the train control and management system, the compressed air humidity detection module further comprises a box body with an open front side and an air circuit board, and the air circuit board is matched with the open front side of the box body. According to the device for detecting and displaying the compressed air humidity of the railway vehicle, the humidity of the compressed air can be detected and displayed according to the pressure setting, so that the problem of false alarm is avoided, whether the compressed air humidity is qualified or not can be indicated through the red or green lamp of the indicating lamp according to the air humidity, the examination and the repair are convenient, the observation and the judgment are convenient, the pressure switch and the humidity sensor can be calibrated through external equipment at any time, and the manual operation is convenient.
Description
Technical Field
The invention belongs to the technical field of railway vehicle detection, and particularly relates to a railway vehicle compressed air humidity detection and display device.
Background
The rail vehicle uses a plurality of compressed air systems, such as an air brake system, an air spring suspension system and a pneumatic pantograph system, and the compressed air is used as a medium, so that the system parts and pipelines are corroded and even failed due to excessive humidity. Generally, a wind source system is provided with a dryer for drying compressed air, so that corrosion of parts and pipelines is avoided, and if the dryer fails or the dryer fails, the humidity state of the compressed air is judged quickly and accurately.
In the prior art, a dew point meter which is specially used for measuring the humidity of compressed air is connected through a test connector arranged on a pipeline, the humidity of the compressed air is detected through the dew point meter, if the humidity of the compressed air is within an allowable range, the current drying effect is determined to be good, otherwise, a dryer or a drying agent is required to be checked.
This kind of mode can't detect compressed air humidity in real time, can't show compressed air humidity in real time, need the artifical manual operation of maintainer to in case take place desicator or drier inefficacy between two detection periods, can't know before the detection next time, can cause the corrosion of pipeline or equipment to become invalid, thereby influence the stability of rail vehicle during operation.
Disclosure of Invention
The invention provides a device for detecting and displaying compressed air humidity of a railway vehicle, and aims to solve the problems that in the humidity detection of the prior art, the compressed air humidity cannot be detected in real time, the compressed air humidity cannot be displayed in real time, and manual operation of maintenance personnel is required.
The invention is realized in such a way, the device for detecting and displaying the compressed air humidity of the railway vehicle comprises an air pipeline and a train control and management system, wherein a compressed air humidity detection module is arranged on the air pipeline and is electrically connected with the train control and management system, the compressed air humidity detection module also comprises a box body with an open front side and a gas circuit board, the gas circuit board is matched with the open front side of the box body, the gas circuit board is detachably arranged on the front side of the box body, a pressure switch is arranged on the gas circuit board, a humidity sensor is arranged on the box body, a test connector is arranged on the box body, a compressed air inlet pipe is vertically communicated with the front side of the bottom of the box body, a compressed air outlet pipe is vertically communicated with the rear side of the bottom of the box body, and ball valves are arranged on the compressed air inlet pipe and the compressed air outlet pipe, indicator lights are arranged on two sides of the surface of the box body.
Preferably, the inner cavity of the compressed air humidity detection module is in threaded connection with a plurality of mounting bolts, and the other ends of the mounting bolts extend to the outside of the compressed air humidity detection module.
Preferably, a plurality of hasp locks are arranged on the gas circuit board, a plurality of locking fixing blocks are fixedly connected to the surface of the box body, and the hasp locks are matched with the locking fixing blocks.
Preferably, one of the indicator lights is displayed in red and the other indicator light is displayed in green.
Preferably, the surfaces of the box body and the gas circuit board are coated with antistatic paint.
Preferably, the outer end of the compressed air inlet pipe is provided with an air inlet connector, and the outer end of the compressed air outlet pipe is provided with an air outlet connector.
Preferably, the surface of the box body is fixedly connected with two transparent protective covers, and one transparent protective cover is arranged outside one indicator light.
Preferably, the surface of the air pipeline is coated with a polyvinylamine curing epoxy resin anticorrosive paint.
Preferably, the transparent protective cover is adhered to the surface of the box body through an adhesive.
Preferably, the front surface of the box body is fixedly connected with a sealing gasket which is abutted against the surface of the gas circuit board.
Compared with the prior art, the invention has the beneficial effects that: according to the device for detecting and displaying the humidity of the compressed air of the railway vehicle, the humidity of the compressed air can be detected and displayed according to the pressure setting, so that the problem of false alarm is avoided, whether the humidity of the compressed air is qualified or not can be indicated through the red or green lamp of the indicating lamp according to the humidity of the air, the inspection and the manual observation and judgment are facilitated, the pressure switch and the humidity sensor can be calibrated through external equipment at any time, the manual operation is facilitated, the air path is cut off through the cut-off cock in a parallel connection mode with the pipeline for inspection, and the function of the air pipeline cannot be influenced.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic structural view of the case and the indicator light of the present invention;
FIG. 3 is a schematic view of the structure of the case and the gas circuit board of the present invention;
FIG. 4 is a schematic diagram of the structure of an air line and compressed air humidity detection module of the present invention;
FIG. 5 is a schematic diagram of the gas circuit of the present invention;
fig. 6 is a schematic circuit diagram of the present invention.
In the figure: 1. compressed air humidity detection module, 101, box, 102, gas circuit board, 2, compressed air intake pipe, 3, compressed air outlet duct, 4, pressure switch, 5, humidity transducer, 6, test connection, 7, ball valve, 8, train control and management system, 9, construction bolt, 10, air pipeline, 11, hasp lock, 12, locking fixed block, 13, pilot lamp, 14, the connector that admits air, 15, the connector of giving vent to anger, 16, transparent protection casing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-5, the present invention provides a technical solution: a compressed air humidity detection and display device for a railway vehicle comprises an air pipeline 10 and a train control and management system 8, wherein a compressed air humidity detection module 1 is arranged on the air pipeline 10, the compressed air humidity detection module 1 is electrically connected with the train control and management system 8, the compressed air humidity detection module 1 further comprises a box body 101 with an open front surface and a gas circuit board 102, the gas circuit board 102 is matched with the open front surface of the box body 101, the gas circuit board 102 is detachably arranged on the front surface of the box body 101, a pressure switch 4 is arranged on the gas circuit board 102, a humidity sensor 5 is arranged on the box body 101, a test connector 6 is arranged on the box body 101, a compressed air inlet pipe 2 is vertically communicated with the front side of the bottom of the box body 101, a compressed air outlet pipe 3 is vertically communicated with the rear side of the bottom of the box body 101, and ball valves 7 are respectively arranged on the compressed air inlet pipe 2 and the compressed air outlet pipe 3, indicator lights 13 are provided on both sides of the surface of the case 101.
The parallel compressed air humidity detection module 1 on the air pipeline 10 sends a humidity signal to the train control and management system 8 after the compressed air pressure in the air pipeline 10 reaches a fixed value, the train control and management system 8 records and displays the compressed air humidity, and opens or closes the contact points indicated by the related indicator lamps according to the humidity value, and indicates whether the air humidity is qualified or not on the indicator lamps 13 of the compressed air humidity detection module 1.
Install pressure switch 4, humidity transducer 5, test connector 6 and ball valve 7 integration on gas circuit board 102, install in box 101, carry out fixed connection between box 101 and the gas circuit board 102 through the manual work, hang box 101 under rail vehicle chassis through the manual work again and connect the use can.
One indicator light 13 is displayed in red and the other indicator light 13 is displayed in green.
The two colors of the indicator light 13 are used for indicating whether the humidity of the compressed air exceeds the standard, the humidity exceeds the standard in red, and the humidity is qualified in green.
Under the normal operating condition, both ball valves 7 are in the communicating state, when the wind pressure of the air pipeline 10 reaches a certain value, for example, 6.0bar, the pressure switch 4 acts, the contacts a and b are communicated, and the train control and management system 8 judges the humidity of the compressed air according to the electric signal transmitted by the test connector 6 and displays the humidity on the display screen of the cab console.
When the train control and management system 8 judges that the humidity of the compressed air is lower than 35%, closing C, D contact points and turning on a green indicator light; when the train control and management system 8 determines that the humidity of the compressed air is above 35%, the contact E, F is closed and the red indicator light is on.
Set for according to pressure and begin to detect and show compressed air's humidity to avoid the problem of wrong report, and can pass through the red or green lamp instruction compressed air humidity whether qualified of pilot lamp 13 according to air humidity, conveniently overhaul the manual work and observe and judge.
When the wind pressure of the air pipeline 10 is lower than a certain value, for example, 6.0bar, the pressure switch 4 is operated, the contacts a and b are disconnected, and at this time, the detection and display of the humidity of the compressed air are not performed.
The humidity sensor 5 is used for connecting external equipment and calibrating the pressure switch 4 and the test connector 6.
When the parts on the compressed air humidity detection module 1 are out of order and need to be replaced or maintained, the two ball valves 7 can be turned off, and at the moment, the compressed air humidity detection module 1 does not work, but other functions of the air pipeline 10 are not affected.
At any time, the pressure switch 4 and the test connector 6 are calibrated through external equipment, manual operation is facilitated, the mode of being connected with the pipeline in parallel is adopted, the air path is cut off through the cut-off cock, and the function of the air pipeline 10 cannot be influenced.
Further, the inner cavity of the compressed air humidity detection module 1 is in threaded connection with a plurality of mounting bolts 9, and the other ends of the mounting bolts 9 extend to the outside of the compressed air humidity detection module 1.
In the present embodiment, the compressed air humidity detection module 1 is easily and manually fixed and mounted under the underframe of the railway vehicle by the plurality of mounting bolts 9.
Further, a plurality of hasp locks 11 are arranged on the gas path plate 102, a plurality of locking fixing blocks 12 are fixedly connected to the surface of the box body 101, and the hasp locks 11 are matched with the locking fixing blocks 12.
In this embodiment, a case cover is fixedly connected to the outside of the gas path plate 102, the snap lock 11 is disposed on the surface of the case cover, the snap lock 11 and the locking fixing block 12 are prior art, and are not described herein, and after the case body 101 and the gas path plate 102 are assembled with each other, the case body 101 can be fixed between the gas path plate 102 by manually connecting the snap lock 11 to the locking fixing block 12.
Further, the surfaces of the box 101 and the gas circuit board 102 are coated with antistatic paint.
In this embodiment, the anti-static paint improves the stability of the compressed air humidity detection module 1 during operation, and prevents static electricity from affecting the use of the compressed air humidity detection module 1.
Further, the outer end of the compressed air inlet pipe 2 is provided with an air inlet connector 14, and the outer end of the compressed air outlet pipe 3 is provided with an air outlet connector 15.
In the present embodiment, the inlet connector 14 and the outlet connector 15 facilitate manual use of the compressed air humidity detection module 1 in parallel with the air pipeline 10, and the compressed air is delivered into the compressed air humidity detection module 1 for detection.
Further, two transparent protective covers 16 are fixedly connected to the surface of the box 101, and one transparent protective cover 16 covers the outside of one indicator light 13.
In this embodiment, the transparent protective cover 16 protects the exposed indicator lamp 13, so that the stability of the compressed air humidity detection module 1 during operation is improved, the service life of the compressed air humidity detection module 1 is prolonged, and the manual detection and checking are facilitated.
Further, the surface of the air pipe 10 is coated with a polyvinylamine curing epoxy resin anticorrosive paint.
In the present embodiment, the polyallylamine-cured epoxy resin anticorrosive coating improves the corrosion resistance strength of the air pipe 10, and further extends the service life of the air pipe 10.
Further, the transparent shield 16 is adhered to the surface of the case 101 by an adhesive.
In this embodiment, the transparent protective cover 16 is adhered to the surface of the case 101 by an adhesive, so that the structure is simple, the manufacturing cost is low, and the production and processing are facilitated.
Further, a gasket abutting against the surface of the gas circuit board 102 is fixedly connected to the front surface of the case 101.
In the present embodiment, the gasket improves the sealing property after the casing 101 and the gas passage plate 102 are joined together, thereby improving the protection of the pressure switch 4, the humidity sensor 5, and the test socket 6.
The working principle and the using process of the invention are as follows: under the normal working state, the two ball valves 7 are both in the connection state, when the wind pressure of the air pipeline 10 reaches a certain value, the pressure switch 4 is actuated, the contacts a and b are connected, the train control and management system 8 judges the humidity of the compressed air according to the electric signal transmitted by the test connector 6 and displays the humidity on the display screen of the cab console, when the train control and management system 8 judges that the humidity of the compressed air is lower than 35%, the contact C, D is closed, the green indicator lamp is on, when the train control and management system 8 judges that the humidity of the compressed air is higher than 35%, the contact E, F is closed, the red indicator lamp is on, when the wind pressure of the air pipeline 10 is lower than a certain value, such as 6.0bar, the pressure switch 4 is actuated, the contacts a and b are disconnected, at the moment, the detection and display of the humidity of the compressed air are not carried out, when the parts on the compressed air humidity detection module 1 are in fault and need to be replaced or maintained, both ball valves 7 can be switched off, at which time the compressed air humidity detection module 1 will not operate, but will not affect the other functions of the air line 10.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a rail vehicle compressed air humidity detects and display device which characterized in that: the train air humidity detection device comprises an air pipeline (10) and a train control and management system (8), wherein a compressed air humidity detection module (1) is arranged on the air pipeline (10), the compressed air humidity detection module (1) is electrically connected with the train control and management system (8), the compressed air humidity detection module (1) further comprises a box body (101) with an open front side and a gas circuit board (102), the gas circuit board (102) is matched with the open front side of the box body (101), the gas circuit board (102) is detachably arranged on the front side of the box body (101), a pressure switch (4) is arranged on the gas circuit board (102), a humidity sensor (5) is arranged on the box body (101), a test connector (6) is arranged on the box body (101), and a compressed air inlet pipe (2) is vertically communicated with the front side of the bottom of the box body (101), the vertical intercommunication of rear side of box (101) bottom has compressed air outlet duct (3), compressed air intake pipe (2) with all be provided with ball valve (7) on compressed air outlet duct (3), the both sides on box (101) surface all are provided with pilot lamp (13).
2. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 1, wherein: the inner chamber threaded connection of compressed air humidity detection module (1) has a plurality of construction bolt (9), the other end of construction bolt (9) extends to the outside of compressed air humidity detection module (1).
3. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 1, wherein: the gas circuit board (102) is provided with a plurality of hasp locks (11), the fixed surface of box (101) is connected with a plurality of locking fixed block (12), hasp lock (11) with locking fixed block (12) looks adaptation.
4. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 1, wherein: one of the indicator lights (13) is displayed in red, and the other indicator light (13) is displayed in green.
5. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 1, wherein: and antistatic paint is coated on the surfaces of the box body (101) and the gas circuit board (102).
6. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 1, wherein: the outer end of compressed air intake pipe (2) is provided with connector (14) that admits air, the outer end of compressed air outlet duct (3) is provided with connector (15) of giving vent to anger.
7. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 1, wherein: the surface of the box body (101) is fixedly connected with two transparent protective covers (16), and one transparent protective cover (16) covers the outside of one indicator light (13).
8. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 1, wherein: and the surface of the air pipeline (10) is coated with a polyvinylamine curing epoxy resin anticorrosive paint.
9. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 7, wherein: the transparent protective cover (16) is adhered to the surface of the box body (101) through an adhesive.
10. The device for detecting and displaying humidity of compressed air of railway vehicle as claimed in claim 1, wherein: the front surface of the box body (101) is fixedly connected with a sealing gasket which is abutted against the surface of the gas circuit board (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111449224.7A CN113984417A (en) | 2021-11-30 | 2021-11-30 | Rail vehicle compressed air humidity detection and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111449224.7A CN113984417A (en) | 2021-11-30 | 2021-11-30 | Rail vehicle compressed air humidity detection and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113984417A true CN113984417A (en) | 2022-01-28 |
Family
ID=79732788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111449224.7A Pending CN113984417A (en) | 2021-11-30 | 2021-11-30 | Rail vehicle compressed air humidity detection and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113984417A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT510562B1 (en) * | 2010-11-18 | 2012-05-15 | Oebb-Technische Services Gmbh | PRESSURE MEASURING DEVICE |
| JP2013216188A (en) * | 2012-04-06 | 2013-10-24 | Denso Corp | Vehicle air conditioning device |
| CN204775213U (en) * | 2015-07-20 | 2015-11-18 | 中国北车集团大连机车车辆有限公司 | City rail vehicle braking system air humidity automatic checkout device |
| CN206469915U (en) * | 2017-02-27 | 2017-09-05 | 长沙南车电气设备有限公司 | A kind of locomotive compressed air quality on-Line Monitor Device |
| CN207215440U (en) * | 2017-08-03 | 2018-04-10 | 中车唐山机车车辆有限公司 | A kind of integrated form gas circuit test device and train |
| CN108168580A (en) * | 2017-12-21 | 2018-06-15 | 中国科学院上海微系统与信息技术研究所 | A kind of electrostatic prevention structure for silicon substrate MEMS capacitive sensor |
| CN209589124U (en) * | 2019-03-29 | 2019-11-05 | 华伍轨道交通装备（上海）有限责任公司 | Rail vehicle compressed air humiture monitoring device |
-
2021
- 2021-11-30 CN CN202111449224.7A patent/CN113984417A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT510562B1 (en) * | 2010-11-18 | 2012-05-15 | Oebb-Technische Services Gmbh | PRESSURE MEASURING DEVICE |
| JP2013216188A (en) * | 2012-04-06 | 2013-10-24 | Denso Corp | Vehicle air conditioning device |
| CN204775213U (en) * | 2015-07-20 | 2015-11-18 | 中国北车集团大连机车车辆有限公司 | City rail vehicle braking system air humidity automatic checkout device |
| CN206469915U (en) * | 2017-02-27 | 2017-09-05 | 长沙南车电气设备有限公司 | A kind of locomotive compressed air quality on-Line Monitor Device |
| CN207215440U (en) * | 2017-08-03 | 2018-04-10 | 中车唐山机车车辆有限公司 | A kind of integrated form gas circuit test device and train |
| CN108168580A (en) * | 2017-12-21 | 2018-06-15 | 中国科学院上海微系统与信息技术研究所 | A kind of electrostatic prevention structure for silicon substrate MEMS capacitive sensor |
| CN209589124U (en) * | 2019-03-29 | 2019-11-05 | 华伍轨道交通装备（上海）有限责任公司 | Rail vehicle compressed air humiture monitoring device |
Non-Patent Citations (3)
| Title |
|---|
| 李兵丰;蒋庆;汤建斌;谢斌;: "基于模糊控制的压力开关性能检测系统的研制", 自动化与仪表, no. 12 * |
| 王银学, 李维, 伊建玉, 张强: "压缩空气超低湿度的智能测量", 压缩机技术, no. 02, pages 5 - 9 * |
| 项宇航;丛培鹏;尹智勇;: "城轨列车风源系统故障的自动检测方案", 铁道机车车辆, no. 1 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107228745B (en) | Ball valve air tightness testing method and testing system | |
| CN104299845A (en) | Gas density relay capable of being verified directly without disassembly | |
| CN113984417A (en) | Rail vehicle compressed air humidity detection and display device | |
| CN102095559B (en) | Calibration device of on-line SF6 (sulfur hexafluoride)-O2 leak monitoring alarm | |
| KR20180000372A (en) | Diagnostic apparatus and diagnostic method for compressed air | |
| CN213779213U (en) | Movable full-automatic metering verification vehicle for high-pressure natural gas | |
| CN214583812U (en) | Train pipe pressure detection sensor box | |
| WO2023015820A1 (en) | Vehicle, and gas tightness detection method for battery pack of vehicle | |
| CN109596265A (en) | A kind of air pressure signal device detection device and its application method | |
| CN212159040U (en) | Transformer respirator detection device | |
| CN209589124U (en) | Rail vehicle compressed air humiture monitoring device | |
| CN207636565U (en) | A kind of locomotive air source quality detecting system | |
| CN219128625U (en) | Cloth bag dust remover component for pulse valve leakage inspection | |
| CN113155243B (en) | High-pressure natural gas mobile verification vehicle | |
| CN113945338A (en) | Rail vehicle body sealing performance test device and test method | |
| CN112628598A (en) | Safety device and alarm method for liquid ammonia tank car | |
| CN219969658U (en) | Air braking safety early warning system and vehicle | |
| CN201210104Y (en) | Test apparatus for gas regulator | |
| CN220438291U (en) | Portable train compressed air quality detection equipment | |
| CN216082397U (en) | Integrated particulate matter monitoring sensor system of a plurality of independence and mutual calibration | |
| CN109560223A (en) | A kind of battery case and its cabinet and electric vehicle using the battery case | |
| CN220488915U (en) | Pressure maintaining device for traffic pipeline | |
| CN211121733U (en) | Pressure instrument who possesses alarm function | |
| CN209069513U (en) | Multi-functional apparatus for testing weeping | |
| CN208903375U (en) | A kind of display alarm integral portable alarm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |