CN211013416U - Gas circuit control box test bench - Google Patents
Gas circuit control box test bench Download PDFInfo
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- CN211013416U CN211013416U CN201922464514.3U CN201922464514U CN211013416U CN 211013416 U CN211013416 U CN 211013416U CN 201922464514 U CN201922464514 U CN 201922464514U CN 211013416 U CN211013416 U CN 211013416U
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- 238000012360 testing method Methods 0.000 title claims abstract description 86
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000009423 ventilation Methods 0.000 claims description 5
- 230000003584 silencer Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000000087 stabilizing effect Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
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- 238000011056 performance test Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model provides a gas circuit control box test bed, which comprises a test bed, wherein a testing mechanism is arranged on the test bed, and the testing mechanism comprises an air storage cylinder, a test pipeline, a living air cylinder and an air spring air cylinder; the inlet of the air storage cylinder is connected with an air source; the test pipeline comprises a first branch, a second branch and a third branch, an outlet of the air storage cylinder is connected with an inlet of the gas circuit control box to be detected through the first branch, an outlet of the gas circuit control box to be detected is connected with the domestic air cylinder through the second branch, and an outlet of the gas circuit control box to be detected is connected with the air spring air cylinder through the third branch; the development of gas circuit control case test bench has perfected the check out test set of essential element among novel passenger train braking system, has realized the quantitative detection of novel passenger train gas circuit control case performance, and the technical parameter of record gas circuit control case when examining test in time discovers the trouble that exists, the effectual maintenance quality that improves the gas circuit control case has guaranteed the safe operation of novel passenger train.
Description
Technical Field
The utility model relates to a passenger train vehicle braking system testing arrangement technical field, concretely relates to gas circuit case control cabinet.
Background
With the increasing demand for passenger train vehicles, vehicle braking systems are becoming more sophisticated. The air circuit control box is used as a novel component in a brake system of a railway passenger car and is used for collecting each compressed air pipeline to the air circuit control box for on-off control. On one hand, the pipeline of the brake system is simplified, and on the other hand, the potential safety hazard caused by foreign object striking in high-speed operation is eliminated. Meanwhile, the regulation of railway technical management regulations specifies that the operation mileage of a railway passenger car reaches 120 kilometers or the last maintenance time exceeds 2 years, and a gas circuit control box needs to be maintained. But no general overhaul equipment exists in the market due to the strong specificity of railway products. Therefore, the gas circuit control box test bed is specially developed for the purpose.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas circuit control box test bench.
In order to achieve the above object, the utility model provides a following technical scheme: a test bed of a gas circuit control box comprises a test bed, wherein a test mechanism is arranged on the test bed and comprises a gas storage cylinder, a test pipeline, a living air cylinder and an air spring air cylinder; the inlet of the air storage cylinder is connected with an air source; the test pipeline comprises a first branch, a second branch and a third branch, an outlet of the air storage cylinder is connected with an inlet of the gas circuit control box to be detected through the first branch, an outlet of the gas circuit control box to be detected is connected with the domestic air cylinder through the second branch, and an outlet of the gas circuit control box to be detected is connected with the air spring air cylinder through the third branch;
the first branch, the second branch and the third branch are provided with an electromagnetic valve, an exhaust valve, a pressure transmitter and a pressure gauge; a slow air charging valve and a buffer cylinder are further sequentially arranged on the first branch along the air inlet flow direction; the electromagnetic valve on the branch I is connected with the low-speed air charging valve in parallel; the air vent of the slow air charging valve is provided with a shrinkage plug with a ventilation round hole.
Furthermore, the first branch is provided with three parallel branches which are respectively a main air pipe branch, an auxiliary air cylinder branch and a train pipe branch; the outlet of the main air pipe branch is connected with the inlet I of the gas circuit control box to be detected; the outlet of the auxiliary reservoir branch is connected with the inlet II of the gas circuit control box to be detected; and the outlet of the train pipe branch is connected with the inlet III of the gas circuit control box to be detected.
The buffer cylinder and the shrinkage plug are used for realizing slow air filling of the test pipeline. The shrinkage plug is provided with a ventilation round hole with the diameter of 0.4mm and is arranged on a ventilation hole of the valve seat where the slow air charging valve is arranged. The buffer cylinder is arranged on a pipeline behind the slow charging valve. The two work together to reduce the speed of filling wind of test bench to solve the problem that the rise speed of intermediate pressure is too fast and the pressure sensor can not accurately collect the opening pressure in the test of 'test Dg20 check valve opening differential pressure is not more than 20 kPa' of the gas circuit control box test item.
Furthermore, the slow air charging valve and the slow air discharging valve are both electromagnetic reversing valves.
Furthermore, a silencer is arranged on a vent hole of the exhaust valve. The exhaust noise is reduced.
Furthermore, C-type self-locking quick connectors connected with the gas circuit control box to be detected are arranged on the first branch, the second branch and the third branch.
Furthermore, a self-checking assembly is arranged on the test bed, and a U-shaped passage for communicating the first branch with the second branch and the first branch with the third branch is arranged in the self-checking assembly.
Furthermore, a self-checking assembly is arranged on the test bed, a U-shaped passage for communicating the first branch and the second branch and the first branch and the third branch is arranged in the self-checking assembly, quick connectors are arranged at two ends of the U-shaped passage, and the quick connectors are C-type self-locking; the quick connector on the test pipeline is connected to the quick connector of the U-shaped passage through an external hose. The connection is faster.
The technical effects of the utility model are as follows: the development of gas circuit control case test bench has perfected the check out test set of essential element among novel passenger train braking system, has realized the quantitative detection of novel passenger train gas circuit control case performance, and the technical parameter of record gas circuit control case when examining test in time discovers the trouble that exists, the effectual maintenance quality that improves the gas circuit control case has guaranteed the safe operation of novel passenger train.
Drawings
FIG. 1 is a schematic view of the overall structure of a test stand in the embodiment;
FIG. 2 is a rear view of the test stand in the example;
FIG. 3 is a schematic diagram of a test line in the example.
Reference numerals: 10. a test bed; 11. an air storage cylinder; 20. a pressure gauge; 30. a self-checking component; 40. a hose is connected externally; 50. a cushion cylinder; 60. an electromagnetic valve; 70. a living air cylinder; 80. an air spring reservoir.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in FIGS. 1-3, a gas circuit control box test bed 10 comprises a test bed 10, a test mechanism is arranged on the test bed 10, the test mechanism comprises a gas storage cylinder 11, a test pipeline, a living air cylinder 70 and an air spring air cylinder 80, an inlet of the gas storage cylinder 11 is connected with an air source, the test pipeline comprises a first branch, a second branch and a third branch, an outlet of the gas storage cylinder 11 is connected with an inlet of a gas circuit control box to be detected through the first branch, an outlet of the gas circuit control box to be detected is connected with the living air cylinder 70 through the second branch, an outlet of the gas circuit control box to be detected is connected with the air spring air cylinder 80 through the third branch, the volumes of the living air cylinder 70 and the air spring air cylinder 80 are both 40L, and as shown in FIG. 3, the first outlet and the second outlet of the gas circuit control box to be detected are sequentially arranged on the right side of.
The first branch, the second branch and the third branch are provided with an electromagnetic valve 60, an exhaust valve, a pressure transmitter and a pressure gauge 20; a slow air charging valve and a buffer cylinder 50 are further sequentially arranged on the first branch along the air inlet flow direction; the electromagnetic valve 60 on the branch I is connected with the slow charging valve in parallel; the air vent of the slow air charging valve is provided with a shrinkage plug with a ventilation round hole.
The first branch is provided with three parallel branches, namely a main air pipe branch, an auxiliary air cylinder branch and a train pipe branch; the outlet of the main air pipe branch is connected with the inlet I of the gas circuit control box to be detected; the outlet of the auxiliary reservoir branch is connected with the inlet II of the gas circuit control box to be detected; and the outlet of the train pipe branch is connected with the inlet III of the gas circuit control box to be detected. Referring to fig. 3, the left side of the gas circuit control box is provided with a first inlet, a second inlet and a third inlet of the gas circuit control box to be detected from top to bottom in sequence.
The slow air charging valve and the air exhausting valve are all electromagnetic reversing valves. The vent hole of the exhaust valve is provided with a silencer.
C-type self-locking quick connectors connected with the gas circuit control box to be detected are arranged on the first branch, the second branch and the third branch.
The test bed 10 is provided with a self-checking assembly 30, a U-shaped passage for communicating a branch I with a branch II and a branch I with a branch III is arranged in the self-checking assembly 30,
a self-checking assembly 30 is arranged on the test bed 10, a U-shaped passage for communicating a first branch and a second branch and a first branch and a third branch is arranged in the self-checking assembly 30, and quick connectors are arranged at two ends of the U-shaped passage; the quick connector on the test pipeline is connected to the quick connector of the U-shaped passage through an external hose 40.
When the function self-checking is carried out, the main air pipe branch and the life air cylinder pipeline are respectively connected to the quick connector of the self-checking assembly through external hoses, and the train pipe branch and the air spring air cylinder pipeline are connected to the quick connector of the self-checking assembly through external hoses to realize respective communication.
The number of the external hoses is 5, and one end of each external hose is connected to the quick connector of the test pipeline. The other end is connected on the quick-operation joint of self-checking subassembly when the function self-checking, connects on the corresponding mouth of pipe of gas circuit control box when the external hose other end is tested at gas circuit control box. The pipeline of the domestic air cylinder is a second branch, and the pipeline of the air spring air cylinder is a third branch.
In this embodiment, including the test bench body and accredited testing organization, accredited testing organization is including storing up reservoir, experimental pipeline, self-checking subassembly and external hose. Store up reservoir and test pipeline and install inside the test bench, the self-checking subassembly is installed on the test bench mesa.
The test pipeline is provided with an electromagnetic directional valve, a buffer cylinder, a shrinkage plug, a pressure gauge, a pressure transmitter, an air cylinder, a silencer and a quick connector. The air cylinder comprises domestic air 70 and an air spring air cylinder 80, and the electromagnetic directional valve is used for controlling air charging, air discharging and cut-off of the test pipeline. The pressure gauge and the pressure transmitter are used for monitoring the pressure of the test pipeline.
The number of the electromagnetic directional valves is 13, the electromagnetic directional valves 1, 3 and 5 are used for quickly charging air to the test pipeline, the electromagnetic directional valves 1a, 3a and 5a are used for slowly charging air to the test pipeline, the electromagnetic directional valves 2, 4, 6, 8 and 10 are used for exhausting air to the atmosphere from the test pipeline, and the electromagnetic directional valves 7 and 9 are used for cutting off the communication between the air cylinders and the test pipeline. The electromagnetic valves 1 and 1a, 3 and 3a, and 5a are connected in parallel.
The specific operation method is as follows,
1. performance test of main element of gas circuit control box
(1) The Dg20 ball valve should open and close well, and should have no leakage when the ball valve is closed and is filled with 600kPa compressed air for leakage test.
The method comprises the steps of dividing 6 ball valves into 3 groups and testing in corresponding pipelines. For example, the ball valves 1 and 2 are closed, the electromagnetic valve 1 is opened, the air is filled to 600kPa, the electromagnetic valve 1 is closed after 20 seconds of delay, the pressure is stabilized for 20 seconds, the pressure is maintained for 60 seconds, if the pressure value acquired by the pressure transmitter P1 does not drop, the ball valves 1 and 2 are qualified, otherwise, the leakage of the ball valves 1 and 2 exists.
(2) Test Dg20 check valve opening differential pressure is not more than 20kPa, and should not leak when filling with 600kPa compressed air for reverse leakage test.
The method is to test 6 one-way valves in corresponding pipelines respectively. For example, after the check valve 1 is opened and the ball valve 2 is closed, the electromagnetic valve 1a is opened to slowly charge air, when the pressure value collected by the pressure transmitter P4 changes, the pressure transmitter P1 value is collected immediately, and if the value is not more than 20kPa, the leakage test is continued. And opening the electromagnetic valves 1 and 7, continuing to charge air to 600kPa and delaying for 20 s. And (3) closing the electromagnetic valve 1, opening the electromagnetic valve 2, stabilizing the pressure for 20s, and maintaining the pressure for 60 s. If the pressure value collected by the pressure transmitter P4 does not drop, the check valve 1 is qualified, otherwise, the check valve 1 leaks.
(3) The Dg20 filter should be leak free when tested for leak through compressed air at 600 kPa.
The method comprises the steps of closing the ball valves 1, 2, 5 and 6, then opening the electromagnetic valves 1 and 5, charging air to 600kPa, delaying for 20s, closing the electromagnetic valves 1 and 5, stabilizing the pressure for 20s and maintaining the pressure for 60 s. If the pressure value collected by the pressure transmitter P1 does not drop, the total air pipe filter is qualified; the pressure value collected by the pressure transmitter P3 does not drop, which indicates that the train pipe filter is qualified, otherwise, indicates that the filter leaks.
2 gas circuit control box main board assembly performance test
2.1 motherboard assembly leak test
The main air pipe seat, the auxiliary air cylinder pipe seat and the brake pipe seat are filled with compressed air of 600kPa, the air spring air cylinder, the living air cylinder and the pipe seat are connected with pressure gauges, and 6 groups of Dg20 ball valves are all opened. And checking that no leakage exists at the joints of the valves, the pipe seats and the main board and at the process blockage positions of the main board.
The method comprises the steps of opening ball valves 1, 2, 3, 4, 5 and 6, opening electromagnetic valves 1, 3 and 5, filling air to 600kPa and delaying for 20 s. And (4) closing the electromagnetic valves 1, 3 and 5, stabilizing the pressure for 20s, and maintaining the pressure for 60 s. The pressure sensors P1, P2, P3, P4 and P5 collect the pressure values of the pipelines without reduction, which indicates that no leakage exists in the main board assembly.
2.2 testing the comprehensive performance of the motherboard assembly
(1) Air supply test of main air pipe
Each Dg20 ball valve was closed and 600kPa compressed air was provided only by the main air duct. When the ball valves 1 and 2 are closed, the wind pressure of the two air outlets is zero. The ball valves 1 and 2 are opened respectively, and the air pressure of the living air cylinder and the air spring air cylinder can be increased to 580 kPa. And closing the ball valves 1 and 2 and the air supply valve of the main air pipe, maintaining the pressure for 2min, and keeping the pressure drop not more than 10 kPa.
The method comprises the steps of closing the ball valves 1 and 2, opening the electromagnetic valve 1 and filling air, and ensuring that the pressure values of the pipelines collected by the pressure transmitters P4 and P5 cannot be reduced. And then opening the ball valve 1, opening the electromagnetic valve 7 to charge air to the living air cylinder, opening the ball valve 2, opening the electromagnetic valve 9 to charge air to the air spring air cylinder, and acquiring whether the pressure value of the pipeline can reach 580kPa by the pressure transmitters P4 and P5. And then closing the ball valves 1 and 2 and the electromagnetic valve 1, stabilizing the pressure for 20s, maintaining the pressure for 2min, and respectively collecting pressure values P1, P4 and P5, wherein the pressure drop is not more than 10 kPa.
(2) Air supply test of auxiliary reservoir
Each Dg20 ball valve was closed and only the secondary reservoir supply line provided 600kPa of compressed air. When the ball valves 3 and 4 are closed, the wind pressure of the two air outlets is zero. The ball valves 3 and 4 are opened respectively, and the air pressure of the living air cylinder and the air spring air cylinder can be increased to 580 kPa. And closing the ball valves 3 and 4 and the air supply valve of the main air pipe, maintaining the pressure for 2min, and keeping the pressure drop not more than 10 kPa.
The method comprises the steps of closing the ball valves 3 and 4, opening the electromagnetic valve 3 and charging air, and ensuring that the pressure values of the pipelines collected by the pressure transmitters P4 and P5 cannot be reduced. And then opening the ball valve 3, opening the electromagnetic valve 7 to charge air to the living air cylinder, opening the ball valve 4, opening the electromagnetic valve 9 to charge air to the air spring air cylinder, and acquiring whether the pressure value of the pipeline can reach 580kPa by the pressure transmitters P4 and P5. And then closing the ball valves 3 and 4 and the electromagnetic valve 3, stabilizing the pressure for 20s, maintaining the pressure for 2min, and respectively collecting pressure values P1, P4 and P5, wherein the pressure drop is not more than 10 kPa.
(3) Train pipe (brake pipe or brake main pipe) air supply test
Each Dg20 ball valve was closed and 600kPa compressed air was provided only by the train pipe. When the ball valves 5 and 6 are closed, the wind pressure of the two air outlets is zero. The ball valves 5 and 6 are opened respectively, and the air pressure of the living air cylinder and the air spring air cylinder can be increased to 580 kPa. And closing the ball valves 5 and 6 and the air supply valve of the main air pipe, maintaining the pressure for 2min, and keeping the pressure drop not more than 10 kPa.
The method comprises the steps of closing the ball valves 5 and 6, opening the electromagnetic valve 5 and charging air, and ensuring that the pressure values of the pipelines collected by the pressure transmitters P4 and P5 cannot be reduced. And then opening the ball valve 5, opening the electromagnetic valve 7 to charge air to the living air cylinder, opening the ball valve 6, opening the electromagnetic valve 9 to charge air to the air spring air cylinder, and acquiring whether the pressure value of the pipeline can reach 580kPa by the pressure transmitters P4 and P5. And then closing the ball valves 5 and 6 and the electromagnetic valve 5, stabilizing the pressure for 20s, maintaining the pressure for 2min, and respectively collecting pressure values P1, P4 and P5, wherein the pressure drop is not more than 10 kPa.
The specific operation method of the self-checking is as follows,
(1) and the main air pipe branch, the train pipe branch, the living air cylinder pipeline and the air spring air cylinder pipeline are connected with the self-checking assembly through an external hose, and the auxiliary air cylinder branch is idle.
(2) The pressure transmitters P1, P2 and P3 respectively collect corresponding pipeline pressure values, and if the pressure values do not rise, the electromagnetic valves 1, 3 and 5 are qualified.
(3) And opening the electromagnetic valves 1, 3 and 5, charging air to 600kPa, closing the electromagnetic valves 1, 3 and 5, stabilizing the pressure for 20s, and maintaining the pressure for 60 s. The pressure transmitter P1 acquires the pressure value of a main air pipe, namely a pipeline of a domestic air cylinder, the pressure transmitter P2 acquires the pressure value of an auxiliary air cylinder branch, and the pressure transmitter P3 acquires the pressure value of a train pipe, namely the pipeline of an air spring air cylinder. And if the pressure change value is within 3 kPa, the air tightness of the pipeline is qualified.
(4) And opening the electromagnetic valves 1, 5, 7 and 9, charging air to 600kPa in the living air cylinder and the air spring air cylinder, closing the electromagnetic valves 1 and 5, stabilizing the pressure for 20s, and maintaining the pressure for 60 s. The pressure transmitter P4 collects the pressure value of the living air cylinder, and the pressure transmitter P5 collects the pressure value of the air cylinder of the air spring. And if the pressure change value is within 3 kPa, the air tightness of the air cylinder is qualified.
The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.
Claims (7)
1. The utility model provides a gas circuit control box test bench which characterized in that: the test bed is provided with a testing mechanism, and the testing mechanism comprises an air storage cylinder, a test pipeline, a living air cylinder and an air spring air cylinder; the inlet of the air storage cylinder is connected with an air source; the test pipeline comprises a first branch, a second branch and a third branch, an outlet of the air storage cylinder is connected with an inlet of the gas circuit control box to be detected through the first branch, an outlet of the gas circuit control box to be detected is connected with the domestic air cylinder through the second branch, and an outlet of the gas circuit control box to be detected is connected with the air spring air cylinder through the third branch;
the first branch, the second branch and the third branch are provided with an electromagnetic valve, an exhaust valve, a pressure transmitter and a pressure gauge; a slow air charging valve and a buffer cylinder are further sequentially arranged on the first branch along the air inlet flow direction; the electromagnetic valve on the branch I is connected with the low-speed air charging valve in parallel; the air vent of the slow air charging valve is provided with a shrinkage plug with a ventilation round hole.
2. The gas circuit control box test bed as claimed in claim 1, wherein the first branch is provided with three parallel branches which are respectively a main air pipe branch, an auxiliary air cylinder branch and a train pipe branch; the outlet of the main air pipe branch is connected with the inlet I of the gas circuit control box to be detected; the outlet of the auxiliary reservoir branch is connected with the inlet II of the gas circuit control box to be detected; and the outlet of the train pipe branch is connected with the inlet III of the gas circuit control box to be detected.
3. The gas circuit control box test bed as claimed in claim 1, wherein the slow charging valve and the exhaust valve are all electromagnetic directional valves.
4. The air passage control box test bed as claimed in claim 1, wherein a silencer is disposed on the vent hole of the exhaust valve.
5. The gas circuit control box test bed according to claim 1, wherein the first branch, the second branch and the third branch are all provided with C-type self-locking quick connectors connected with the gas circuit control box to be detected.
6. The gas circuit control box test bed according to claim 1, wherein a self-checking assembly is arranged on the test bed, and a U-shaped passage for communicating the first branch with the second branch and the first branch with the third branch is arranged in the self-checking assembly.
7. The gas circuit control box test bed according to claim 5, wherein a self-checking assembly is arranged on the test bed, a U-shaped passage for communicating a first branch with a second branch and a first branch with a third branch is arranged in the self-checking assembly, and quick connectors are arranged at two ends of the U-shaped passage; the quick connector on the test pipeline is connected to the quick connector of the U-shaped passage through an external hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922464514.3U CN211013416U (en) | 2019-12-31 | 2019-12-31 | Gas circuit control box test bench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922464514.3U CN211013416U (en) | 2019-12-31 | 2019-12-31 | Gas circuit control box test bench |
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| CN211013416U true CN211013416U (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665620A (en) * | 2021-09-24 | 2021-11-19 | 北京中车重工机械有限公司 | Brake cabinet and rail car |
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2019
- 2019-12-31 CN CN201922464514.3U patent/CN211013416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665620A (en) * | 2021-09-24 | 2021-11-19 | 北京中车重工机械有限公司 | Brake cabinet and rail car |
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