CN212674880U - Air quality detector for railway vehicle - Google Patents
Air quality detector for railway vehicle Download PDFInfo
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- CN212674880U CN212674880U CN202021973272.7U CN202021973272U CN212674880U CN 212674880 U CN212674880 U CN 212674880U CN 202021973272 U CN202021973272 U CN 202021973272U CN 212674880 U CN212674880 U CN 212674880U
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- air quality
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Abstract
A rail vehicle air quality detector comprises a first shell and a second shell fixed on the top of the first shell; a gas detection cavity is arranged in the first shell, a gas inlet and a gas outlet which are communicated with the gas detection cavity are respectively arranged on two outer side walls of the first shell, and a temperature and humidity sensor and an oil gas detection sensor are arranged in the gas detection cavity; an accommodating cavity is formed in the second shell, a circuit board is arranged in the accommodating cavity, a control circuit is arranged on the circuit board, and a data interface electrically connected with the control circuit is arranged on the outer surface of the second shell; the gas detection intracavity is provided with the connecting wire, the one end and the temperature and humidity sensor of connecting wire and oil gas detection sensor electricity are connected, and the other end stretches into the holding intracavity is connected with the control circuit electricity. The utility model discloses be convenient for rail vehicle air quality detector's installation and use.
Description
Technical Field
The utility model belongs to the technical field of underground rail way ambient air detects technique and specifically relates to a rail vehicle air quality detector.
Background
At present, a screw air compressor or a reciprocating piston air compressor is generally adopted by a metro vehicle as an air source of an air pipeline system, and compressed air must be processed through an oil-gas separator and an air dryer, so that clean, dry and stable compressed air is provided for a power system, a control system and a braking system of the metro vehicle. In order to detect whether indexes such as relative humidity of compressed air reach standards or not, data are obtained accurately in real time, a special detection device is developed in the market, if the Chinese utility model patent with the publication number of CN209589124U, the air quality of the compressed air is monitored by a sensor through the compressed air temperature and humidity monitoring device of the railway vehicle related to the patent, the compressed air temperature and humidity monitoring device is connected with the sensor and a control circuit part through a lead, the control circuit part is arranged on a digital display box body and is separated from the sensor part, and the detection device is convenient to install and use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a rail vehicle air quality detector is convenient for install and use.
The utility model provides a rail vehicle air quality detector, which comprises a first shell and a second shell fixed on the top of the first shell; a gas detection cavity is arranged in the first shell, a gas inlet and a gas outlet which are communicated with the gas detection cavity are respectively arranged on two outer side walls of the first shell, and a temperature and humidity sensor and an oil gas detection sensor are arranged in the gas detection cavity; an accommodating cavity is formed in the second shell, a circuit board is arranged in the accommodating cavity, a control circuit is arranged on the circuit board, and a data interface electrically connected with the control circuit is arranged on the outer surface of the second shell; the gas detection intracavity is provided with the connecting wire, the one end and the temperature and humidity sensor of connecting wire and oil gas detection sensor electricity are connected, and the other end stretches into the holding intracavity is connected with the control circuit electricity.
Preferably, the gas detection cavity forms an opening at the top of the first shell, the second shell covers the opening, a wire passing hole communicated with the accommodating cavity is formed in the bottom of the second shell, and the connecting wire passes through the wire passing hole.
Preferably, the connecting line is coated with a colloid, and the colloid is arranged in the wire passing hole.
Preferably, the first shell and the second shell are detachably connected, and a sealing ring is arranged between the first shell and the second shell around the opening.
Preferably, a plurality of mounting posts are arranged on the first shell, and the mounting posts are used for mounting and fixing in reserved mounting holes.
Preferably, a calibration hole communicated with the gas detection cavity is formed in the outer side wall of the first shell.
Preferably, the gas detection chamber is provided with the fixed plate, temperature and humidity sensor and oil gas detection sensor are all fixed on the fixed plate, the holding intracavity is provided with the fixed bolster, the circuit board is fixed on the fixed bolster.
Preferably, the air inlet and the air outlet are coaxially arranged.
Preferably, the inner walls of the air inlet and the air outlet are both provided with threads.
Preferably, filter screens are arranged in the air inlet and the air outlet.
The utility model discloses has following technological effect: the utility model discloses be provided with temperature and humidity sensor and oil gas detection sensor in first casing, the air from the air inlet input gets into gaseous detection chamber, and temperature and humidity sensor and oil gas detection sensor can detect compressed air's quality. The circuit board is arranged in the second shell, the control circuit is arranged on the circuit board, the data interface electrically connected with the control circuit is arranged on the outer surface of the second shell, and the connecting wire is connected with the sensor and the control circuit, so that data detected by the temperature and humidity sensor and the oil gas detection sensor can be output outwards through the data interface. Meanwhile, the second shell is fixed on the first shell to form an integrated structure, so that the whole air quality detector for the railway vehicle can be conveniently mounted and used.
Drawings
Fig. 1 is a schematic structural diagram of an air quality detector for a rail vehicle according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of a rail vehicle air quality detector according to an embodiment of the present invention;
fig. 3 is an exploded schematic view of an air quality detector for a rail vehicle according to an embodiment of the present invention at another viewing angle;
fig. 4 is an installation schematic diagram of the rail vehicle air quality detector of an embodiment of the present invention.
Wherein the reference numerals are: the gas detection device comprises a first shell 1, a gas detection cavity 10, a gas inlet 11, a gas outlet 12, a mounting column 13, a calibration hole 14, a filter screen 15, a mounting panel 100, a second shell 2, a containing cavity 20, a top plate 21, a data interface 22, a line passing hole 23, a fixing plate 3, a connecting line 31, a colloid 32, a sealing ring 33, a circuit board 4 and a fixing support 41.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a rail vehicle air quality detector, as shown in fig. 1-4, it includes first casing 1 and fixes second casing 2 at first casing 1 top. Be provided with gaseous detection chamber 10 in first casing 1, two lateral walls of first casing 1 are provided with respectively and detect the air inlet 11 and the gas outlet 12 that the chamber 10 communicates with gaseous detection, and first casing 1 can be the cuboid form, and air inlet 11 and gas outlet 12 can set up respectively on two relative lateral walls of first casing 1. A temperature and humidity sensor and an oil-gas detection sensor are arranged in the gas detection cavity 10, and compressed air in a subway air pipeline can be input into the gas detection cavity 10 from the air inlet 11 and then output through the air outlet 12. The temperature and humidity sensor in the gas detection cavity 10 can detect the temperature and humidity of the compressed air, and the oil gas detection sensor is used for detecting the content of oil in the compressed air.
A relatively closed accommodating cavity 20 is arranged in the second shell 2, a circuit board 4 is arranged in the accommodating cavity 20, and a control circuit is arranged on the circuit board 4 and comprises a controller, a memory, a conversion circuit and the like. Of course, a battery may be disposed on the circuit board 4 to supply power to the modules of the control circuit, the temperature and humidity sensor, and the oil and gas detection sensor. The outer surface of the second shell 2 is provided with a data interface 22 electrically connected with the control circuit, the data interface 22 may be an aviation plug or a USB interface, and the conversion circuit is used to convert signals sent by the temperature and humidity sensor and the oil and gas detection sensor into a signal system required by the data interface 22, so that detected data can be output from the data interface 22. The data interface 22 may connect an external device and then transmit the detected data to the external device. The data interface 22 can be connected with an alarm device, the controller can also judge the detected data, and when the detected temperature, humidity or oil content is more than the preset content, the controller outputs an alarm signal through the data interface 22 so as to control the alarm device to alarm.
Be provided with connecting wire 31 in gaseous detection chamber 10, the one end and the temperature and humidity sensor of connecting wire 31 and oil gas detection sensor electricity are connected, and the other end stretches into in holding chamber 20 and is connected with control circuit electricity to send control circuit with the sensing signal that temperature and humidity sensor and oil gas detection sensor produced.
In one embodiment, the gas detection chamber 10 forms an opening at the top of the first housing 1, and the second housing 2 covers the opening to prevent the gas inside the gas detection chamber 10 from leaking and affecting the detection result. And the bottom of the second shell 2 is provided with a wire passing hole 23 communicated with the accommodating cavity 20, and the connecting wire 31 passes through the wire passing hole 23 and is electrically connected with the control circuit on the circuit board 4, so that the gas leakage in the gas detection cavity 10 is prevented, and the electric connection between the connecting wire 31 and the control circuit is realized.
Further, the connecting wire 31 is coated with the colloid 32, the colloid 32 is arranged in the wire through hole 23, and the colloid 32 plays a role similar to a sealing ring, so that the sealing performance of the wire through hole 23 is further improved.
In one embodiment, the first housing 1 and the second housing 2 are detachably connected, and a sealing ring 33 is disposed between the first housing 1 and the second housing 2 around the opening of the top of the first housing 1 to further enhance the sealing performance of the gas detection chamber 10. Set up first casing 1 and the detachable connection of second casing 2, temperature and humidity sensor and oil gas detection sensor in easy to assemble and the gaseous detection chamber 10 of maintenance.
As shown in fig. 2, the second housing 2 can be mounted on the top surface of the first housing 1 by screws, the top of the second housing 2 can also be provided with an opening, the opening is covered with a top plate 21 detachably connected with the second housing 2, the data interface 22 can be fixed on the top plate 21, and the top plate 21 can be detached, so that the circuit board 4 in the second housing 2 can be conveniently mounted and overhauled.
In one embodiment, the first housing 1 is provided with a plurality of mounting posts 13, and the mounting posts 13 are used for mounting and fixing in reserved mounting holes, so that the whole rail vehicle air quality detector is mounted at a designated position. The mounting posts 13 may be screws, and corresponding threaded holes are provided on the first housing 1, and the reserved mounting holes are also corresponding threaded holes. As shown in fig. 4, a mounting panel 100 may be disposed in the subway system, the mounting panel 100 may be L-shaped, a mounting hole is reserved in the mounting panel 100, a plurality of mounting posts 13 on the first casing 1 are mounted and fixed in the mounting hole reserved in the mounting panel 100, and the air inlet pipe and the air outlet pipe are connected to the air inlet 11 and the air outlet 12, respectively.
In an embodiment, a calibration hole 14 communicated with the gas detection cavity 10 is formed in the outer side wall of the first casing 1, and the accuracy of the temperature and humidity sensor and the accuracy of the oil and gas detection sensor can be calibrated through the calibration hole 14. Specifically, the gas inlet 11 and the gas outlet 12 can be closed, the calibration hole 14 is opened, the standard gas is input into the calibration hole 14, the temperature and the humidity of the standard gas and the oil content of the standard gas are set values, and then data detected by the temperature and humidity sensor and the oil-gas detection sensor are compared with the set values to judge whether the data are different from the set values or not so as to calibrate. Of course, when using the rail vehicle air quality detector of the present embodiment, the calibrated hole 14 may be sealed by a sealing plug.
In one embodiment, a fixing plate 3 is disposed in the gas detection chamber 10, the temperature and humidity sensor and the oil gas detection sensor are both fixed on the fixing plate 3, a fixing bracket 41 is disposed in the accommodating chamber 20, and the circuit board 4 is fixed on the fixing bracket 41. Make temperature and humidity sensor and oil gas detection sensor stable fixation in gaseous detection chamber 10 through fixed plate 3, make circuit board 4 stable fixation in holding chamber 20 through fixed bolster 41.
In one embodiment, the gas inlet 11 and the gas outlet 12 are coaxially arranged to form a straight-through gas path for facilitating the flow of gas in the gas detection chamber 10.
In one embodiment, the inner walls of the inlet 11 and outlet 12 are threaded to facilitate connection to a pipeline configured with threaded fittings.
In an embodiment, all be provided with filter screen 15 in air inlet 11 and the gas outlet 12, filter screen 15 can filter impurity, prevents that impurity from getting into in the gaseous detection chamber 10, influences the accuracy that temperature and humidity sensor and oil gas detection sensor detected.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.
Claims (10)
1. The utility model provides a rail vehicle air quality detector which characterized in that: comprises a first shell and a second shell fixed on the top of the first shell; a gas detection cavity is arranged in the first shell, a gas inlet and a gas outlet which are communicated with the gas detection cavity are respectively arranged on two outer side walls of the first shell, and a temperature and humidity sensor and an oil gas detection sensor are arranged in the gas detection cavity; an accommodating cavity is formed in the second shell, a circuit board is arranged in the accommodating cavity, a control circuit is arranged on the circuit board, and a data interface electrically connected with the control circuit is arranged on the outer surface of the second shell; the gas detection intracavity is provided with the connecting wire, the one end and the temperature and humidity sensor of connecting wire and oil gas detection sensor electricity are connected, and the other end stretches into the holding intracavity is connected with the control circuit electricity.
2. The rail vehicle air quality detector of claim 1, wherein: the gas detection cavity forms an opening at the top of the first shell, the second shell covers the opening, a wire passing hole communicated with the accommodating cavity is formed in the bottom of the second shell, and the connecting wire penetrates through the wire passing hole.
3. The rail vehicle air quality detector of claim 2, wherein: the connecting wires are coated with colloid, and the colloid is arranged in the wire passing holes.
4. The rail vehicle air quality detector of claim 2, wherein: the first shell is detachably connected with the second shell, and a sealing ring is arranged between the first shell and the second shell around the opening.
5. The rail vehicle air quality detector of any one of claims 1-4, wherein: the first shell is provided with a plurality of mounting columns, and the mounting columns are used for being mounted and fixed in reserved mounting holes.
6. The rail vehicle air quality detector of any one of claims 1-4, wherein: and a calibration hole communicated with the gas detection cavity is formed in the outer side wall of the first shell.
7. The rail vehicle air quality detector of any one of claims 1-4, wherein: the gas detection intracavity is provided with the fixed plate, temperature and humidity sensor and oil gas detection sensor are all fixed on the fixed plate, the holding intracavity is provided with the fixed bolster, the circuit board is fixed on the fixed bolster.
8. The rail vehicle air quality detector of any one of claims 1-4, wherein: the air inlet and the air outlet are coaxially arranged.
9. The rail vehicle air quality detector of any one of claims 1-4, wherein: and the inner walls of the air inlet and the air outlet are both provided with threads.
10. The rail vehicle air quality detector of any one of claims 1-4, wherein: and filter screens are arranged in the air inlet and the air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021973272.7U CN212674880U (en) | 2020-09-10 | 2020-09-10 | Air quality detector for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021973272.7U CN212674880U (en) | 2020-09-10 | 2020-09-10 | Air quality detector for railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212674880U true CN212674880U (en) | 2021-03-09 |
Family
ID=74824465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021973272.7U Active CN212674880U (en) | 2020-09-10 | 2020-09-10 | Air quality detector for railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212674880U (en) |
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2020
- 2020-09-10 CN CN202021973272.7U patent/CN212674880U/en active Active
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