CN220854052U - Device for detecting leakage area of train cab door - Google Patents
Device for detecting leakage area of train cab door Download PDFInfo
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- CN220854052U CN220854052U CN202322596964.4U CN202322596964U CN220854052U CN 220854052 U CN220854052 U CN 220854052U CN 202322596964 U CN202322596964 U CN 202322596964U CN 220854052 U CN220854052 U CN 220854052U
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- flange
- door
- sealing cavity
- leakage area
- detecting
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- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram 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
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a device for detecting the leakage area of a train cab door, which relates to the technical field of train door detection equipment and comprises a sealing cavity; the surface of the sealing cavity is provided with a sample door, the surface of the sample door is provided with a pressing bar, and the surface of the sealing cavity is provided with a T-shaped groove; a first flange is arranged on one side of the sealing cavity, and an air pressure sensor is arranged on one side of the first flange and is connected with a data acquisition instrument through a connecting wire; a second flange is arranged on one side of the sealing cavity, a digital flowmeter is arranged on one side of the second flange, a pressure regulating valve is arranged on one side of the digital flowmeter, and a corrugated pipe is arranged on one side of the pressure regulating valve. According to the utility model, the leakage area of the test piece is calculated by adding the flowmeter at the air inlet end and detecting the data of the cavity air pressure and the input flow, so that whether the tightness of the door meets the requirement is well estimated, the structure is reasonable, the design is novel, and the leakage area of the cab door of the motor train unit can be effectively detected.
Description
Technical Field
The utility model relates to the technical field of train door detection equipment, in particular to a device for detecting the leakage area of a train cab door.
Background
Because of the higher speed per hour, the air pressure in the train changes when the train passes through a tunnel or a plateau. The change of air pressure can influence the riding comfort of passengers, so that the door of the motor train unit has certain requirements on tightness. Different from the door of the train carriage, the door inside the train has higher air tightness requirement, the air tightness requirement is not high, and gaps are allowed between the door leaves and the door, and the specific requirement is based on the technical document of a host factory.
The tightness of the door leaf is tested conventionally, the method is to pump compressed air with certain pressure into the sealing cavity, maintain the pressure for a certain time, observe the pressure change value, because the tightness between the door leaf and the door frame of the cab door is not very good, the traditional way of pressing and maintaining the pressure is not suitable, because the air pressure can be reduced to normal pressure at one instant.
Disclosure of utility model
The utility model provides a device for detecting the leakage area of a train cab door, which calculates the leakage area of a test piece by adding a flowmeter at an air inlet end and detecting the data of cavity air pressure and input flow, thereby well evaluating whether the tightness of the door meets the requirement or not and solving the problems in the background art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
An apparatus for detecting a leakage area of a train cab door includes a sealed cavity;
The surface of the sealing cavity is provided with a sample door, the surface of the sample door is provided with a pressing bar, and the surface of the sealing cavity is provided with a T-shaped groove;
A first flange is arranged on one side of the sealing cavity, and an air pressure sensor is arranged on one side of the first flange and is connected with a data acquisition instrument through a connecting wire;
The second flange is installed to one side of sealed chamber, and the digital flowmeter is installed to one side of second flange, the air-vent valve is installed to one side of digital flowmeter, the bellows is installed to one side of air-vent valve, and the air compressor machine is installed to the one end of bellows.
As a further description of the above technical solution:
The sample door is sealed with the sealing cavity through structural adhesive, and the pressing strip is connected with the T-shaped groove through a T-shaped bolt.
As a further description of the above technical solution:
The inside cavity that is of first flange, the one end of first flange is the flange other end and is the pipe screw thread, and first flange passes through pipe threaded connection with the air pressure sensor.
As a further description of the above technical solution:
the inside of second flange is hollow, and the one end of second flange is the flange other end and is the pipe screw thread, second flange passes through pipe threaded connection with digital flowmeter, and seals through the raw material area between second flange and the digital flowmeter.
As a further description of the above technical solution:
the air pressure sensor is a piezoelectric sensor.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
According to the utility model, the leakage area of the test piece is calculated by adding the flowmeter at the air inlet end and detecting the data of the cavity air pressure and the input flow, so that whether the tightness of the door meets the requirement is well estimated, the structure is reasonable, the design is novel, and the leakage area of the cab door of the motor train unit can be effectively detected.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for detecting a leakage area of a train cab door according to the present utility model.
Legend description:
1. Sealing the cavity; 2. a sample door; 3. pressing strips; 4. a T-shaped groove; 5. a first flange; 6. an air pressure sensor; 7. a data acquisition instrument; 8. a second flange; 9. a digital display flowmeter; 10. a pressure regulating valve; 11. a bellows; 12. and an air compressor.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, an apparatus for detecting a leakage area of a train cab door includes a seal chamber 1;
the surface of the sealing cavity 1 is provided with a sample door 2, the surface of the sample door 2 is provided with a pressing bar 3, and the surface of the sealing cavity 1 is provided with a T-shaped groove 4;
A first flange 5 is arranged on one side of the sealing cavity 1, a gas pressure sensor 6 is arranged on one side of the first flange 5, and the gas pressure sensor 6 is connected with a data acquisition instrument 7 through a connecting wire;
The second flange 8 is installed to one side of sealed chamber 1, and digital flowmeter 9 is installed to one side of second flange 8, air-vent valve 10 is installed to one side of digital flowmeter 9, bellows 11 is installed to one side of air-vent valve 10, and air compressor 12 is installed to one end of bellows 11, the both ends of air-vent valve 10 all adopt the raw material area to seal, air compressor 12 switch on the AC220V power, can make air compressor 12 can produce compressed air, and the compressed air that air compressor 12 produced can reach 0.6MPa at maximum, through the instantaneous flow that the air pressure value that the air pressure sensor 6 that gathers and digital flowmeter 9 show, bring into the standard prescribed calculation formula, can calculate the area of revealing of sample door 2, the calculation formula is:
Qf＝Vs*A
The above-mentioned Q f is the instantaneous flow in cubic meters per second (internal pressure in Pa when m 3/s);Pi is t), P e is the external pressure in Pa, V s is the air velocity of the leakage face in meters per second (m/s), ρ is the air density in kilograms per cubic meter (kg/m 3) when t is the test condition, A is the leakage area in square meters (square meters), and the leakage area can be obtained by the three formulas in the above.
Further, the sample door 2 and the sealing cavity 1 are sealed through structural adhesive, the pressing strip 3 is connected with the T-shaped groove 4 through a T-shaped bolt, the T-shaped bolt and the T-shaped groove 4 are convenient to fixedly mount the sample door 2 on the sealing cavity 1, the sealing cavity 1 is a fixed part, and the size of the door frame of the cab door is customized.
Further, the inside of the first flange 5 is hollow, one end of the first flange 5 is provided with pipe threads, the other end of the first flange is provided with pipe threads, the first flange 5 is connected with the air pressure sensor 6 through the pipe threads, the first flange 5 and the sealing cavity 1 are sealed by using vortex type sealing rings, and the first flange 5 and the air pressure sensor 6 are sealed by using raw material belts.
Further, the inside of the second flange 8 is hollow, one end of the second flange 8 is provided with a pipe thread, the other end of the second flange is provided with a pipe thread, the second flange 8 is connected with the digital flowmeter 9 through the pipe thread, the second flange 8 is sealed with the digital flowmeter 9 through a raw material belt, the second flange 8 is connected with the sealing cavity 1 through the flange, and the joint is sealed by using a sealing ring.
Further, the air pressure sensor 6 is a piezoelectric sensor, the air pressure sensor 6 is connected with the data acquisition instrument 7 through a data line, the data acquisition instrument 7 can convert a voltage signal acquired by the air pressure sensor 6 into a digital signal and transmit the digital signal into a computer, an air pressure-time curve is generated through computer software, and an original record is saved for writing a report.
Working principle: compressed air can be generated through the air compressor 12, the air is abandoned to be conveyed by using the corrugated pipe 11, the pressure regulating valve 10 is used for regulating the air inlet pressure, the digital display flowmeter 9 is used for measuring the instantaneous flow, the air pressure sensor 6 and the data acquisition instrument 7 are used for acquiring and recording the air pressure value, and the acquired air pressure value and the instantaneous flow displayed by the digital display flowmeter 9 are brought into a standard specified calculation formula to calculate the leakage area of the sample door 2.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. Device for detecting the leakage area of a train cab door, comprising a sealed chamber (1), characterized in that:
The surface of the sealing cavity (1) is provided with a sample door (2), the surface of the sample door (2) is provided with a pressing strip (3), and the surface of the sealing cavity (1) is provided with a T-shaped groove (4);
A first flange (5) is arranged on one side of the sealing cavity (1), an air pressure sensor (6) is arranged on one side of the first flange (5), and the air pressure sensor (6) is connected with a data acquisition instrument (7) through a connecting wire;
The device is characterized in that a second flange (8) is arranged on one side of the sealing cavity (1), a digital flowmeter (9) is arranged on one side of the second flange (8), a pressure regulating valve (10) is arranged on one side of the digital flowmeter (9), a corrugated pipe (11) is arranged on one side of the pressure regulating valve (10), and an air compressor (12) is arranged at one end of the corrugated pipe (11).
2. An apparatus for detecting a leakage area of a train cab door as defined in claim 1, wherein: the sample door (2) is sealed with the sealing cavity (1) through structural adhesive, and the pressing strip (3) is connected with the T-shaped groove (4) through a T-shaped bolt.
3. An apparatus for detecting a leakage area of a train cab door as defined in claim 1, wherein: the inside of the first flange (5) is hollow, one end of the first flange (5) is provided with a pipe thread, the other end of the first flange is provided with a pipe thread, and the first flange (5) is connected with the air pressure sensor (6) through the pipe thread.
4. An apparatus for detecting a leakage area of a train cab door as defined in claim 1, wherein: the inside of second flange (8) is cavity, and the one end of second flange (8) is the flange other end and is the pipe screw thread, second flange (8) and digital flowmeter (9) pass through pipe threaded connection, and seal through the raw material area between second flange (8) and digital flowmeter (9).
5. An apparatus for detecting a leakage area of a train cab door as defined in claim 1, wherein: the air pressure sensor (6) is a piezoelectric sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322596964.4U CN220854052U (en) | 2023-09-25 | 2023-09-25 | Device for detecting leakage area of train cab door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322596964.4U CN220854052U (en) | 2023-09-25 | 2023-09-25 | Device for detecting leakage area of train cab door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220854052U true CN220854052U (en) | 2024-04-26 |
Family
ID=90786465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322596964.4U Active CN220854052U (en) | 2023-09-25 | 2023-09-25 | Device for detecting leakage area of train cab door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220854052U (en) |
-
2023
- 2023-09-25 CN CN202322596964.4U patent/CN220854052U/en active Active
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