CN112432739A - Train pipe leakage searching method - Google Patents
Train pipe leakage searching method Download PDFInfo
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- CN112432739A CN112432739A CN202011388439.8A CN202011388439A CN112432739A CN 112432739 A CN112432739 A CN 112432739A CN 202011388439 A CN202011388439 A CN 202011388439A CN 112432739 A CN112432739 A CN 112432739A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- NTTIDCCSYIDANP-UHFFFAOYSA-N BCCP Chemical compound BCCP NTTIDCCSYIDANP-UHFFFAOYSA-N 0.000 claims description 3
- 101710201279 Biotin carboxyl carrier protein Proteins 0.000 claims description 3
- 101710180532 Biotin carboxyl carrier protein of acetyl-CoA carboxylase Proteins 0.000 claims description 3
- 238000007459 endoscopic retrograde cholangiopancreatography Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000003137 locomotive effect Effects 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A train pipe leakage searching method comprises the following steps: (1) separating the train pipe air pipeline system from the brake cabinet train pipeline system; (2) inflating one end of a train pipe air pipeline system through an inflation tool, wherein the other end of the train pipe air pipeline system is blocked, and the inflation is stopped after the interior of the train pipe air pipeline system reaches specified air pressure; (3) and judging whether the train pipe air pipeline system leaks, and if not, judging that the train pipe system of the brake cabinet leaks. By adopting the method, the train pipe leakage searching efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of train pipe leakage maintenance, in particular to a train pipe leakage searching method.
Background
When the electric locomotive is newly manufactured or overhauled and leaves a factory, according to the 6.3.1 system leakage requirement in the technical requirement of China railway general company' TJJJW 039-2014 temporary technical condition of the air brake system controlled by the microcomputer of the alternating current transmission locomotive: when the pressure of the train pipe is reduced by 50kPa, the air supplement of the train pipe to the total wind direction is cut off, and the leakage rate of the train pipe is not more than 10kPa/5 min; since I undertake the repair of harmonious electric locomotives C5 and C6, in the test process of the whole train brake, the train pipe leakage exceeds the standard for many times, the whole train test period is greatly increased, and a large amount of time is wasted for finding leakage points. Meanwhile, the leakage fault of the train pipe of the locomotive becomes a main potential threat influencing the safe operation of the locomotive, and is an important problem which must be solved emphatically by a locomotive maintenance system.
The train pipe in the microcomputer air system is composed of two parts, one part is a brake cabinet train pipeline system, the other part is a train pipe air pipeline system, the existing train pipe leakage searching technology adopts the steps that whether leakage exists in each position in the train pipe air pipeline system is detected firstly, if no leakage point is found in the train pipe air pipeline system, the fact that the brake cabinet train pipeline system leaks is judged, then the train pipe system of the brake cabinet is searched and maintained aiming at the brake cabinet train pipeline system, and therefore the following two problems exist:
(1) the prior art cannot quickly distinguish which part of a train pipe air pipeline system and a brake cabinet train pipeline system has a leakage point;
(2) the prior art needs to occupy a special leakage test bed for a long time and is not beneficial to train management leakage search of a locomotive running on a maintenance department of a locomotive service section or a normal line;
therefore, improvements are needed.
Disclosure of Invention
The invention aims to provide a train pipe leakage searching method which can quickly judge which part of a train pipe air pipeline system and a brake cabinet train pipeline system has leakage, reduce the train pipe leakage checking time, improve the product maintenance quality and avoid the damage of a locomotive on a line caused by the over standard of the train pipe leakage. In order to achieve the purpose, the invention adopts the following technical scheme:
a train pipe leakage searching method comprises the following steps: (1) separating the train pipe air pipeline system from the brake cabinet train pipeline system; (2) inflating one end of a train pipe air pipeline system through an inflation tool, wherein the other end of the train pipe air pipeline system is blocked, and the inflation is stopped after the interior of the train pipe air pipeline system reaches specified air pressure; (3) and judging whether the train pipe air pipeline system leaks, and if not, judging that the train pipe system of the brake cabinet leaks.
Further, the train pipe air pipeline system is connected with the brake cabinet train pipeline system through a BP pipe and a BPVV pipe, and in the step (2), the inflation tool inflates the BP pipe and blocks the BPVV pipe; or the inflation tool inflates the BPVV pipe to block the BP pipe.
Further, the inflation tool comprises an inflation pipeline, a pressure regulating valve arranged on the inflation pipeline, a first cut-off cock arranged at the input end of the inflation pipeline and a second cut-off cock arranged at the output end of the inflation pipeline, the input end of the inflation pipeline is used for being connected with an air supply port of an air source, and the output end of the inflation pipeline is used for being connected with a train pipe air pipeline system.
Further, before step (1), the method further comprises an inflating tool self-checking process for detecting the sealing performance of the inflating tool, wherein the inflating tool self-checking process comprises the following steps: (a) closing the second cut-off cock, opening the first cut-off cock, inflating through the input end of the inflation pipeline, and adjusting the pressure regulating valve to stabilize the pressure at the specified air pressure; (b) and closing the first shutoff cock, waiting for preset time to cause the air pressure to be stable, inserting the digital pressure gauge into a test port on the inflation pipeline, and testing the leakage rate in the specified time to judge whether the sealing requirement is met.
Further, in the step (2), a second cut-off cock is opened to inflate the train pipe air pipeline system, and after the interior of the train pipe air pipeline system reaches the specified air pressure, the first cut-off cock is closed to stop inflating.
Further, in the step (3), the method for determining whether the train pipe air pipeline system leaks includes the steps of: a. Whether air leakage and exhaust sound exist at the following joints is heard: firstly, an EBV joint of a cab, a mechanical pressure gauge joint of a train pipe, an NB11 joint, a backup module joint, a long car valve joint, a KM2 exhaust valve joint, a flow transmitter joint and a D10 sensor joint in a mechanical room at two ends, a train pipe folding angle cock joint and an anti-collision cock joint of a pipeline system at a train end, and if sound of air pipeline leakage exists, the joints at corresponding positions are fastened; b. If the ear can not be distinguished, spraying the pipeline joint in the step A by adopting an air leakage agent for testing, and if bubbles appear in the pipeline joint, fastening the pipeline joint; c. If no leakage point is found in the A, B steps, replacing an EBV or a wind meter in the cab to eliminate leakage faults; d. If the leakage point is not determined in the step C, checking the straight pipe joint and the three-way joint below the pipe row; if the leak point cannot be identified, it is determined that the train pipe air piping system is not leaking in step A, B, C, D.
Further, in the step (3), the method for searching for the leakage point of the brake cabinet train pipe system comprises the following steps: the method comprises the steps of replacing a DBTV module, a BPCP module, an ERCP module, a 16CP module or a BCCP module in a brake cabinet train pipeline system, and replacing an EPCU air passage block in the brake cabinet if leakage points are not determined after all modules are replaced.
Further, in the step (2), the specified air pressure is 600 kPa.
Further, in the step (b), the specified time is 5min, and if the leakage is less than 10kPa within 5min, the sealing requirement is met.
Furthermore, the input end of the inflation tool is provided with a quick connector, and the output end of the inflation tool is provided with a straight pipe connector.
By adopting the technical scheme, the train pipe air pipeline system is separated from the brake cabinet train pipeline system, whether the train pipe air pipeline system leaks is detected through the inflation tool firstly, if the train pipe air pipeline system does not leak, the train pipe system of the brake cabinet is directly judged to leak, leakage points in the train pipe system of the brake cabinet are directly searched, the time for searching the leakage of the train pipe air pipeline system is saved, compared with the traditional mode that the possible leakage points of the train pipe air pipeline system are detected in sequence firstly, and then the train pipe system of the brake cabinet is detected, a large amount of maintenance time is saved.
Secondly, this aerify frock is light, can carry to any maintenance region at will, and at the line operation stage, the accessible is changed the quick-operation joint form, directly obtains the wind regime from the circuit both sides, seeks the train pipe and leaks the trouble. And (4) overhauling in the factory, and also can utilize an in-factory wind source system to acquire a wind source and search the leakage fault of the train pipe.
Drawings
FIG. 1 is a schematic diagram of a train pipe piping system.
FIG. 2 is a schematic view of the connection of the inflation tool and the train pipe pipeline system in the invention.
Detailed Description
The invention is described below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the train pipe pipeline system includes a train pipe air pipeline system and a brake cabinet train pipeline system, and the train pipe air pipeline system is connected with the brake cabinet train pipeline system through a BP pipe and a BPVV pipe
The train pipe pipeline system is inflated by using an inflation tool to detect leakage points, the inflation tool comprises an inflation pipeline, a pressure regulating valve 2, an air gauge 4, a test port 3, a first cut-off cock 1 and a second cut-off cock 5, the pressure regulating valve is arranged on the inflation pipeline, the test port 3 is used for testing air pressure, the first cut-off cock 1 is arranged at the input end of the inflation pipeline, the second cut-off cock 5 is arranged at the output end of the inflation pipeline, a quick connector is arranged at the input end of the inflation tool, a straight-through pipe connector is arranged at the output end of the inflation tool, the input end of the inflation pipeline is used for being connected with an air.
The train pipe leakage searching method comprises the following steps:
firstly, the self-sealing performance of the inflatable tool is detected, and the method specifically comprises the following steps:
(a) closing the second cut-off cock 5, opening the first cut-off cock 1, inflating through the input end of the inflation pipeline, and adjusting the pressure regulating valve 2 to stabilize the pressure at 600 kPa;
(b) and closing the first shutoff cock 1, waiting for 1min to enable the air pressure to be stable, inserting a digital pressure gauge into a test port 3 on the inflation pipeline, testing the leakage rate within 5min, and if the leakage rate is lower than 10kPa within 5min, meeting the sealing requirement.
Secondly, searching leakage points of the train pipe, comprising the following steps:
(1) separating the train pipe air pipeline system from the brake cabinet train pipeline system;
(2) the input end of the inflation tool is connected with a BPVV pipe of a train pipe air pipeline system, a BP pipe of the train pipe air pipeline system is blocked, a second cut-off cock 5 is opened to inflate the train pipe air pipeline system, and when a digital pressure gauge at a test port 3 on the inflation tool displays 600 kPa and is stable, the first cut-off cock 1 is closed to stop inflation;
(3) and judging whether the train pipe air pipeline system leaks or not according to the train pipe leakage judgment standard, and if the train pipe air pipeline system does not leak, judging that the train pipe system of the brake cabinet leaks.
In the step (3), the method for judging whether the train pipe air pipeline system leaks comprises the following steps: a. Whether air leakage and exhaust sound exist at the following joints is heard: firstly, an EBV joint of a cab, a mechanical pressure gauge joint of a train pipe, an NB11 joint, a backup module joint, a long car valve joint, a KM2 exhaust valve joint, a flow transmitter joint and a D10 sensor joint in a mechanical room at two ends, a train pipe folding angle cock joint and an anti-collision cock joint of a pipeline system at a train end, and if sound of air pipeline leakage exists, the joints at corresponding positions are fastened;
B. if the ear can not be distinguished, spraying the pipeline joint in the step A by adopting an air leakage agent for testing, and if bubbles appear in the pipeline joint, fastening the pipeline joint;
C. if no leakage point is found in the A, B steps, replacing the EBV or the wind meter 4 in the cab to eliminate leakage faults;
D. if the leakage point is not determined in the step C, checking the straight pipe joint and the three-way joint below the pipe row; if the leak point cannot be identified, it is determined that the train pipe air piping system is not leaking in step A, B, C, D.
In the step (3), the method for searching the leakage point of the brake cabinet train pipeline system comprises the following steps: the method comprises the steps of replacing a DBTV module, a BPCP module, an ERCP module, a 16CP module or a BCCP module in a brake cabinet train pipeline system, and replacing an EPCU air passage block in the brake cabinet if leakage points are not determined after all modules are replaced.
By adopting the technical scheme, the train pipe air pipeline system is separated from the brake cabinet train pipeline system, whether the train pipe air pipeline system leaks is detected through the inflation tool firstly, if the train pipe air pipeline system does not leak, the train pipe system of the brake cabinet is directly judged to leak, leakage points in the train pipe system of the brake cabinet are directly searched, the time for searching the leakage of the train pipe air pipeline system is saved, compared with the traditional mode that the possible leakage points of the train pipe air pipeline system are detected in sequence firstly, and then the train pipe system of the brake cabinet is detected, a large amount of maintenance time is saved.
Secondly, this aerify frock is light, can carry to any maintenance region at will, and at the line operation stage, the accessible is changed the quick-operation joint form, directly obtains the wind regime from the circuit both sides, seeks the train pipe and leaks the trouble. And (4) overhauling in the factory, and also can utilize an in-factory wind source system to acquire a wind source and search the leakage fault of the train pipe.
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 present invention, as it will be apparent to those skilled in the art that various modifications, combinations and variations can be made in the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A train pipe leakage searching method is characterized by comprising the following steps: the method comprises the following steps:
(1) separating the train pipe air pipeline system from the brake cabinet train pipeline system;
(2) inflating one end of a train pipe air pipeline system through an inflation tool, wherein the other end of the train pipe air pipeline system is blocked, and the inflation is stopped after the interior of the train pipe air pipeline system reaches specified air pressure;
(3) and judging whether the train pipe air pipeline system leaks, and if not, judging that the train pipe system of the brake cabinet leaks.
2. The train pipe leakage finding method of claim 1, wherein: the train pipe air pipeline system is connected with the brake cabinet train pipeline system through a BP pipe and a BPVV pipe, and in the step (2), the inflation tool inflates the BP pipe and blocks the BPVV pipe; or the inflation tool inflates the BPVV pipe to block the BP pipe.
3. The train pipe leakage finding method of claim 1, wherein: the inflation tool comprises an inflation pipeline, a pressure regulating valve arranged on the inflation pipeline, a first cut-off cock arranged at the input end of the inflation pipeline and a second cut-off cock arranged at the output end of the inflation pipeline, wherein the input end of the inflation pipeline is used for being connected with an air supply port of an air source, and the output end of the inflation pipeline is used for being connected with a train pipe air pipeline system.
4. The train pipe leakage finding method of claim 3, wherein: before step (1), still include the frock self-checking process of aerifing that is used for detecting the frock self sealing performance of aerifing, aerify frock self-checking process and include following step:
(a) closing the second cut-off cock, opening the first cut-off cock, inflating through the input end of the inflation pipeline, and adjusting the pressure regulating valve to stabilize the pressure at the specified air pressure;
(b) and closing the first shutoff cock, waiting for preset time to cause the air pressure to be stable, inserting the digital pressure gauge into a test port on the inflation pipeline, and testing the leakage rate in the specified time to judge whether the sealing requirement is met.
5. The train pipe leakage finding method of claim 3, wherein: in the step (2), the second stop cock is opened to inflate the train pipe air pipeline system, and after the interior of the train pipe air pipeline system reaches the specified air pressure, the first stop cock is closed to stop inflating.
6. The train pipe leakage finding method of claim 1, wherein: in the step (3), the method for judging whether the train pipe air pipeline system leaks comprises the following steps:
A. whether air leakage and exhaust sound exist at the following joints is heard: firstly, an EBV joint of a cab, a mechanical pressure gauge joint of a train pipe, an NB11 joint, a backup module joint, a long car valve joint, a KM2 exhaust valve joint, a flow transmitter joint and a D10 sensor joint in a mechanical room at two ends, a train pipe folding angle cock joint and an anti-collision cock joint of a pipeline system at a train end, and if sound of air pipeline leakage exists, the joints at corresponding positions are fastened;
B. if the ear can not be distinguished, spraying the pipeline joint in the step A by adopting an air leakage agent for testing, and if bubbles appear in the pipeline joint, fastening the pipeline joint;
C. if no leakage point is found in the A, B steps, replacing an EBV or a wind meter in the cab to eliminate leakage faults;
D. if the leakage point is not determined in the step C, checking the straight pipe joint and the three-way joint below the pipe row;
if the leak point cannot be identified, it is determined that the train pipe air piping system is not leaking in step A, B, C, D.
7. The train pipe leakage finding method of claim 1, wherein: in the step (3), the method for searching the leakage point of the brake cabinet train pipeline system comprises the following steps: the method comprises the steps of replacing a DBTV module, a BPCP module, an ERCP module, a 16CP module or a BCCP module in a brake cabinet train pipeline system, and replacing an EPCU air passage block in the brake cabinet if leakage points are not determined after all modules are replaced.
8. The train pipe leakage finding method of claim 1, wherein: in the step (2), the specified gas pressure is 600 kPa.
9. The train pipe leakage finding method of claim 4, wherein: in step (b), the specified time is 5min, and if the leakage is less than 10kPa within 5min, the sealing requirement is met.
10. The train pipe leakage finding method of claim 2, wherein: the input end of the inflation tool is provided with a quick connector, and the output end of the inflation tool is provided with a straight pipe connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388439.8A CN112432739A (en) | 2020-12-02 | 2020-12-02 | Train pipe leakage searching method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388439.8A CN112432739A (en) | 2020-12-02 | 2020-12-02 | Train pipe leakage searching method |
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| CN112432739A true CN112432739A (en) | 2021-03-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696934A (en) * | 2021-09-07 | 2021-11-26 | 广州电力机车有限公司 | Method for processing abnormal speed fault of locomotive |
| CN113884239A (en) * | 2021-08-13 | 2022-01-04 | 中车南京浦镇车辆有限公司 | Train braking system pipeline leakage diagnosis method based on TCMS data |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589822A (en) * | 2012-02-10 | 2012-07-18 | 南车长江车辆有限公司 | Railway vehicle brake piepline failure rapid detection method |
| CN108278494A (en) * | 2017-12-26 | 2018-07-13 | 中车唐山机车车辆有限公司 | Rail vehicle air pipe system leak hunting method |
-
2020
- 2020-12-02 CN CN202011388439.8A patent/CN112432739A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589822A (en) * | 2012-02-10 | 2012-07-18 | 南车长江车辆有限公司 | Railway vehicle brake piepline failure rapid detection method |
| CN108278494A (en) * | 2017-12-26 | 2018-07-13 | 中车唐山机车车辆有限公司 | Rail vehicle air pipe system leak hunting method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884239A (en) * | 2021-08-13 | 2022-01-04 | 中车南京浦镇车辆有限公司 | Train braking system pipeline leakage diagnosis method based on TCMS data |
| CN113884239B (en) * | 2021-08-13 | 2023-12-22 | 中车南京浦镇车辆有限公司 | Train braking system pipeline leakage diagnosis method based on TCMS data |
| CN113696934A (en) * | 2021-09-07 | 2021-11-26 | 广州电力机车有限公司 | Method for processing abnormal speed fault of locomotive |
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