A locomotive brake pipe leak detection device

Abstract

The utility model relates to a kind of diesel locomotive brake pipe leakage detection device, including detection table, clamping seat, positioning stop seat and cylinder are installed on detection table, brake pipe inner end is clamped on clamping seat and brake pipe inner end's flange is attached to the side of positioning stop seat, the flange of brake pipe outer end is equipped with the first block that blocks up brake pipe outer end flange inner hole, the second block that blocks up brake pipe inner end flange inner hole is fixedly connected in the end of cylinder piston rod of second block, second block outer periphery is connected with the air pipe that can be into pressure gas in brake pipe, pressure gauge is equipped on the pipeline of air pipe.The utility model realizes the quick sealing of brake pipe by the cooperation between first block and second block, air pipe is into pressure gas in the brake pipe of sealing and keeps pressure for a period of time, to detect whether brake pipe exists leakage phenomenon, the pressure change situation in brake pipe is observed, the detection process is simple and convenient, and it improves detection efficiency and detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, and in particular to a device for detecting leaks in the brake pipe of an internal combustion locomotive. Background Technology

[0002] During the operation of the Fuxing series diesel locomotives, the reliability of their braking system is crucial to the safe operation of the locomotives.

[0003] As a key component of the braking system, the sealing performance of the brake pipe directly affects the braking effect and driving safety. Because the brake pipe consists of many irregularly shaped tubes, a large amount of welding work is required during manufacturing. After welding, a precise and reliable sealing test must be conducted to ensure that there is no leakage at the weld joint, so that the brake pipe can withstand the corresponding pressure during train operation and stably perform its braking function.

[0004] Existing brake pipe sealing testing methods and equipment often face problems such as low testing efficiency when dealing with the complex structure and high-precision sealing requirements of brake pipes used in Fuxing diesel locomotives, making it difficult to meet the needs of modern large-scale train production and strict quality control. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a leakage detection device for internal combustion locomotive brake pipes, which can accurately measure the pressure changes in the brake pipes, accurately determine whether there is a leakage, and greatly improve the detection efficiency and accuracy.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a leakage detection device for brake pipe of internal combustion locomotive, wherein the brake pipe has flanges at both ends and includes a detection platform. A clamping seat is installed on the detection platform. A positioning stop and a cylinder are sequentially installed on the detection platform inside the clamping seat. The inner end of the brake pipe is placed on the clamping seat and clamped, and the flange of the inner end of the brake pipe is closely positioned against the side of the positioning stop. A clamping assembly is provided at the flange of the outer end of the brake pipe. The clamping assembly has a first plug block that blocks the inner hole of the flange of the outer end of the brake pipe. A second plug block that blocks the inner hole of the flange of the inner end of the brake pipe is fixedly connected to the piston rod end of the cylinder. A vent pipe that can introduce pressurized gas into the brake pipe is connected to the outer periphery of the second plug block. A pressure gauge with pressure holding, pressure relief and shut-off functions is provided on the vent pipe.

[0007] To facilitate stable support of the brake pipe, a support frame is provided on the side of the testing platform. The support frame includes a chassis, on which a square tube is fixed. A support rod is installed inside the square tube and can be raised and lowered. A V-shaped seat supporting the outer end of the brake pipe is fixed at the upper end of the support rod.

[0008] Specifically, the clamping seat includes a base fixed on the testing table, a clamping block above the base, the brake tube being clamped between the base and the clamping block, and a clamping screw above the clamping block that applies force to the clamping block to clamp the brake tube.

[0009] Furthermore, the clamping assembly includes a three-jaw clamping plate, the upper end of which is threadedly connected to a clamping screw, the first plug is fixed to the end of the clamping screw, and the lower end of the three-jaw clamping plate abuts against the inner side of the outer flange of the brake tube.

[0010] Furthermore, a cylinder seat is fixed on the testing platform, the cylinder is installed on the cylinder seat, and an air compressor connected to the cylinder pipeline is provided on the side of the testing platform.

[0011] Preferably, the air compressor is equipped with an air source distributor, and the air pipe is connected to the air source distributor.

[0012] The beneficial effects of this utility model are: This utility model achieves rapid sealing of the brake pipe through the cooperation between the first and second blocking blocks. The vent pipe introduces pressurized gas into the sealed brake pipe and maintains the pressure for a period of time. The pressure change inside the brake pipe is observed to detect whether there is a leak in the brake pipe. The detection process is simple and convenient, improving detection efficiency and accuracy. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0016] Figure 3 This is a schematic diagram of the clamping assembly described in this utility model.

[0017] Figure 4 This is a structural schematic diagram of the support frame described in this utility model.

[0018] In the diagram: 1. Brake pipe, 2. Testing platform, 3. Clamping seat, 3-1. Base, 3-2. Clamping block, 3-3. Clamping screw, 3-4. U-shaped seat, 4. Positioning stop seat, 5. Cylinder, 6. Clamping assembly, 6-1. First blocking block, 6-2. Three-jaw clamping plate, 6-3. Clamping screw, 7. Second blocking block, 8. Vent pipe, 9. Pressure gauge, 10. Support frame, 10-1. Chassis, 10-2. Square tube, 10-3. Support rod, 10-4. V-shaped seat, 11. Cylinder seat, 12. Air compressor, 13. Air source distributor. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0020] like Figure 1 , Figure 2 The present invention relates to a leakage detection device for a diesel locomotive brake pipe. The brake pipe 1 has flanges at both ends for connection. The detection device includes a detection platform 2. For ease of description, the brake pipe 1 located inside the detection platform 2 is referred to as the inner end, and the brake pipe 1 located outside the detection platform 2 is referred to as the outer end.

[0021] The testing table 2 is sequentially equipped with a clamping seat 3, a positioning stop seat 4, and a cylinder 5. The clamping seat 3 includes a base 3-1 fixed on the testing table 2. A clamping block 3-2 is provided above the base 3-1. The brake pipe 1 is clamped between the base 3-1 and the clamping block 3-2. An inverted U-shaped seat 3-4 is provided above the clamping block 3-2. A clamping screw 3-3 is connected to the U-shaped seat 3-4. The clamping screw 3-3 applies downward force to the clamping block 3-2 to clamp the inner end of the brake pipe 1. The flange of the inner end of the brake pipe 1 is closely positioned against the side of the positioning stop seat 4.

[0022] Two cylinder seats 11 are fixed on the test bench 2 and arranged at a distance. The cylinder 5 is installed between the two cylinder seats 11. An air compressor 12 connected to the cylinder 5 pipeline is provided on the side of the test bench 2. A second blocking block 7 is fixed to the end of the piston rod of the cylinder 5. During the test, the cylinder 5 pushes the second blocking block 7 to block the flange inner hole at the inner end of the brake pipe 1.

[0023] See Figure 3 As shown, a clamping assembly 6 is provided at the flange at the outer end of the brake pipe 1. The clamping assembly 6 includes a three-jaw clamping plate 6-2. The upper end of the three-jaw clamping plate 6-2 is threadedly connected to a clamping screw 6-3. A first blocking block 6-1 is fixedly connected to the end of the clamping screw 6-3. During testing, the lower end of the three-jaw clamping plate 6-2 abuts against the inner side of the flange at the outer end of the brake pipe 1, and the clamping screw 6-3 pushes the first blocking block 6-1 to seal the inner hole of the flange at the outer end of the brake pipe 1.

[0024] To ensure stable support for the brake pipe 1 during the inspection process, a support frame 10 is provided on the side of the testing table 2, see [reference]. Figure 4 As shown, the support frame 10 includes a chassis 10-1, a square tube 10-2 fixed on the chassis 10-1, a support rod 10-3 that can be raised and lowered inside the square tube 10-2, and a set bolt connected to the square tube 10-2 to secure the support rod 10-3 after it has been raised and lowered to the correct position. A V-shaped seat 10-4 that supports the outer end of the brake tube 1 is fixed to the upper end of the support rod 10-3.

[0025] The second block 7 is connected to a vent pipe 8 that allows pressurized gas to be introduced into the brake pipe 1. The vent pipe 8 is equipped with a pressure gauge 9 that has the functions of pressure holding, pressure relief and shut-off. The pressure gauge 9 is located on the test platform 2.

[0026] The air compressor 12 is equipped with an air source distributor 13, and the air pipe 8 is connected to the air source distributor 13. In this way, two sets of testing devices can be set on the testing table 2, and the two air pipes 8 are connected through the air source distributor 13 to realize dual-station connection of brake pipe 1. Both brake pipes 1 can be tested at the same time, which greatly improves the testing efficiency and saves the testing time.

[0027] During testing, the first plug 6-1 of the clamping assembly 6 seals the inner hole of the flange at the outer end of the brake pipe 1, and the inner side of the flange at the inner end of the brake pipe 1 is pressed against the side of the positioning stop seat 4. The cylinder 5 pushes the second plug 7 to seal the inner hole of the flange at the inner end of the brake pipe 1. A certain pressure gas is introduced into the brake pipe 1 through the air compressor 12. Then the valve on the air source distributor 13 is closed, and the shut-off function of the pressure gauge 9 is opened to keep the brake pipe 1 in a sealed state. After maintaining the pressure for a period of time, the pressure change in the brake pipe 1 is observed through the pressure gauge 9 to detect whether there is a leak in the brake pipe 1.

[0028] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A device for detecting leakage in the brake pipe of an internal combustion locomotive, wherein the brake pipe (1) has flanges at both ends, characterized in that: The device includes a testing platform (2), on which a clamping seat (3) is installed. A positioning stop seat (4) and a cylinder (5) are installed sequentially on the testing platform (2) inside the clamping seat (3). The inner end of the brake pipe (1) is clamped on the clamping seat (3), and the flange of the inner end of the brake pipe (1) is positioned close to the side of the positioning stop seat (4). A clamping assembly (6) is provided at the flange of the outer end of the brake pipe (1). The clamping assembly (6) has a first plug (6-1) that blocks the inner hole of the flange of the outer end of the brake pipe (1). The piston rod end of the cylinder (5) is fixedly connected to a second plug (7) that blocks the inner hole of the flange of the inner end of the brake pipe (1). The outer periphery of the second plug (7) is connected to a vent pipe (8) that can introduce pressurized gas into the brake pipe (1). A pressure gauge (9) with pressure holding, pressure relief and shut-off functions is provided on the vent pipe (8).

2. The internal combustion locomotive brake pipe leakage detection device as described in claim 1, characterized in that: The testing platform (2) is provided with a support frame (10) on the side. The support frame (10) includes a chassis (10-1), a square tube (10-2) is fixed on the chassis (10-1), and a support rod (10-3) is provided inside the square tube (10-2) for lifting and lowering. A V-shaped seat (10-4) supporting the outer end of the brake tube (1) is fixed at the upper end of the support rod (10-3).

3. The internal combustion locomotive brake pipe leakage detection device as described in claim 1, characterized in that: The clamping seat (3) includes a base (3-1) fixed on the testing table (2), a clamping block (3-2) is provided above the base (3-1), the brake tube (1) is clamped between the base (3-1) and the clamping block (3-2), and a clamping screw (3-3) is provided above the clamping block (3-2) to apply force to the clamping block (3-2) and clamp the brake tube (1).

4. The internal combustion locomotive brake pipe leakage detection device as described in claim 1, characterized in that: The clamping assembly (6) includes a three-jaw clamping plate (6-2), the upper end of which is threadedly connected to a clamping screw (6-3), the first plug (6-1) is fixed to the end of the clamping screw (6-3), and the lower end of the three-jaw clamping plate (6-2) abuts against the inner side of the outer flange of the brake tube (1).

5. The internal combustion locomotive brake pipe leakage detection device as described in claim 1, characterized in that: The test bench (2) is fixed with a cylinder seat (11), the cylinder (5) is installed on the cylinder seat (11), and an air compressor (12) connected to the cylinder (5) pipeline is provided on the side of the test bench (2).

6. The internal combustion locomotive brake pipe leakage detection device as described in claim 5, characterized in that: The air compressor (12) is equipped with an air source distributor (13), and the air pipe (8) is connected to the air source distributor (13).

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