An adjusting device for a pressure regulating valve of an internal combustion engine vehicle

Abstract

The utility model relates to an adjusting device of a diesel locomotive pressure regulating valve, belonging to the technical field of diesel locomotive maintenance equipment, which is used for pressure adjustment of the diesel locomotive pressure regulating valve. The technical scheme is that an air inlet filter is installed on the upper part of a pressure regulating cabinet, the air inlet filter is connected with a compression fan through an air inlet pipe, the compression fan is connected with a total air cylinder, the total air cylinder is connected with a gas distribution valve through a total air cylinder pipe, an adjusting operation table top is connected on the top surface of the pressure regulating cabinet, the adjusting operation table top is provided with an air inlet interface and an air outlet interface of the pressure regulating valve, the gas distribution valve is connected with the air inlet interface of the pressure regulating valve through an output air pipe, an outlet pressure gauge of the pressure regulating valve is connected with the air outlet interface, an air pressure collection pipe of a double-needle pressure gauge is connected on the total air cylinder, a valve body of an air pressure adjusting valve is installed on the output air pipe of the gas distribution valve, and a pressure relief valve is installed on the air outlet interface of the pressure regulating valve. The utility model can perform pressure test on the diesel locomotive pressure regulating valve, and the adjustment is fast, safe and reliable, the maintenance working hours are reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a device for adjusting the pressure of a pressure regulating valve in a railway diesel locomotive, belonging to the technical field of railway diesel locomotive maintenance equipment. Background Technology

[0002] The GK type diesel locomotive is equipped with three pressure regulating valves. The air source comes from the locomotive's main air cylinder. One pressure regulating valve supplies compressed air to the control air cylinder, while the other two pressure regulating valves provide stable compressed air to the wheel spraying system (wheel-rail lubrication device) of the first and second bogies after pressure regulation. The pressure of each pressure regulating valve is adjusted to 600 kPa.

[0003] The pressure regulating valves on GK-type locomotives are mostly mounted on the locomotive floor. Due to vibrations generated by the locomotive itself and impacts from the railway track during operation, the pointers on the small pressure gauges of most pressure regulating valves become inaccurate, requiring timely adjustments during use. Currently, there is no dedicated adjustment equipment; maintenance personnel adjust the valves by observing the small pressure gauges. When the gauge reading is low, the adjustment pressure is low, resulting in insufficient pressure from the regulating valve, causing the controlled electro-pneumatic valve to malfunction or operate with insufficient force. Conversely, when the gauge reading is high, the adjustment pressure is high, resulting in high pressure output from the regulating valve. Inaccurate pressure output from the regulating valves leads to inaccurate pressure readings, affecting locomotive operation and damaging other components. This causes unnecessary component failure and wear, increases maintenance costs, and may also cause the wheel injection system to malfunction or excessive wheel grease discharge, polluting the environment and posing safety hazards. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an adjustment device for the pressure regulating valve of a diesel locomotive. This adjustment device can simulate the total cylinder pressure of the diesel locomotive and can quickly adjust the pressure of the pressure regulating valve. The adjustment process is fast and safe. The adjusted pressure regulating valve can be directly installed on the locomotive, which shortens the adjustment process of the pressure regulating valve and improves the efficiency of maintenance work.

[0005] The technical solution to the above technical problem is: An adjustment device for a pressure regulating valve in an internal combustion locomotive includes a pressure regulating cabinet, an adjustment control panel, an air inlet filter, an air inlet pipe, a compressor, a distribution valve, a main air cylinder, a main air cylinder pipe, an output air pipe, a pressure regulating valve outlet pressure gauge, a dual-needle pressure gauge, and an air pressure regulating valve. The pressure regulating cabinet is divided into upper and lower layers by a partition. The air inlet filter is installed on the upper part of the cabinet. The compressor and the distribution valve are respectively fixed to the upper surface of the partition. The air inlet filter is connected to the compressor via the air inlet pipe. The compressor is connected to the air inlet of the main air cylinder. The main air cylinder is fixed to the bottom surface of the cabinet below the partition. The air outlet of the main air cylinder... The outlet is connected to the distribution valve via the main air cylinder pipe. The adjustment control panel is connected to the top surface of the pressure regulating cabinet. The adjustment control panel has an air inlet and an air outlet for the pressure regulating valve. The distribution valve is connected to the air inlet of the pressure regulating valve via an output air pipe. The pressure gauge at the outlet of the pressure regulating valve is connected to the air outlet of the pressure regulating valve. The air pressure acquisition pipe of the dual-needle pressure gauge is connected to the main air cylinder. The valve body of the air pressure regulating valve is installed on the output air pipe of the distribution valve. The pressure relief valve is installed on the air outlet of the pressure regulating valve. The air inlet and outlet of the pressure regulating valve under test are respectively plugged into the air inlet and air outlet of the pressure regulating valve on the adjustment control panel.

[0006] The aforementioned pressure regulating valve adjustment device for internal combustion locomotives has casters installed on the bottom surface of the pressure regulating cabinet and a trolley handle installed on one side of the upper end of the pressure regulating cabinet.

[0007] The aforementioned adjusting device for the pressure regulating valve of the internal combustion locomotive includes a compressor fan fixed to a partition plate inside the cabinet by a compressor fan base, a main air cylinder fixed to a main air cylinder mounting seat by a main air cylinder fixing strap, a main air cylinder mounting seat fixed to the bottom surface of the cabinet, a pressure relay installed on the connecting pipe between the compressor fan and the main air cylinder, and a control circuit of the pressure relay connected to the switching circuit of the compressor fan.

[0008] The aforementioned adjusting device for the pressure regulating valve of the internal combustion locomotive has the gauge head of the pressure regulating valve outlet pressure gauge, the gauge head of the double needle pressure gauge, the switch of the air pressure regulating valve, the switch of the pressure relief valve, and the fan switch of the compressed air blower fixed on the adjusting operating table.

[0009] The beneficial effects of this utility model are: The adjustment control panel of this utility model has an air inlet and an air outlet for a pressure regulating valve. The air inlet and outlet of the pressure regulating valve under test can be connected to these interfaces for testing and adjustment. A compressor can input compressed air into the main air cylinder, and a pressure relay can control the start and stop of the compressor to maintain stable air pressure in the main air cylinder and meet testing requirements. A distribution valve supplies compressed air to the pressure regulating valve's air inlet through an output duct. A pressure regulating valve is installed on the distribution valve's output duct to control the air pressure in the supply duct. A pressure gauge at the pressure regulating valve's outlet is connected to the outlet interface, displaying the outlet pressure of the pressure regulating valve under test. The pressure acquisition tube of a dual-needle pressure gauge is connected to the main air cylinder; the black needle of the dual-needle pressure gauge displays the main air cylinder pressure, and the red needle displays the pressure regulating valve's adjustment pressure. A pressure relief valve allows for the release of residual compressed air from the pressure regulating valve after the adjustment test, enabling safe disassembly of the valve.

[0010] This utility model has a reasonable structure and is easy to operate. It can quickly and safely adjust the pressure regulating valve of the internal combustion locomotive, reducing operation time, effectively improving work efficiency, avoiding the impact of inaccurate pressure on locomotive operation and damage to other parts, causing unnecessary scrapping and wear of parts, and effectively reducing maintenance costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Side view; Figure 3 yes Figure 2 A diagram illustrating the testing process.

[0012] The diagram is marked as follows: 1. Pressure regulating cabinet; 2. Adjustment control panel; 3. Partition; 4. Casters; 5. Handlebar; 6. Inlet air filter; 7. Inlet air pipe; 8. Compressor; 9. Distributor valve; 10. Main air cylinder; 11. Main air cylinder pipe; 12. Pressure relay; 13. Output air pipe; 14. Pressure regulating valve inlet interface; 15. Pressure regulating valve outlet interface; 16. Pressure regulating valve outlet pressure gauge; 17. Double needle pressure gauge; 18. Air pressure adjustment valve; 19. Pressure relief valve; 20. Fan switch; 21. Adjustment valve; 22. Compressor base; 23. Main air cylinder fixing strap; 24. Main air cylinder fixing seat. Detailed Implementation

[0013] Figure 1 As shown, this utility model consists of a pressure regulating cabinet 1 and an adjustment operating table 2. The bottom surface of the pressure regulating cabinet 1 is equipped with casters 4, and a trolley 5 is installed on one side of the upper end of the pressure regulating cabinet 1. Measuring personnel can push the pressure regulating cabinet 1 to move it, facilitating adjustment work.

[0014] Figure 1The display shows that the cabinet of the pressure regulating cabinet 1 is divided into upper and lower layers by the partition 3. The cabinet above the partition 3 contains the air inlet filter 6, air inlet pipe 7, compressor 8, air distribution valve 9, and output air pipe 13. The cabinet below the partition 3 contains the main air cylinder 10 and main air cylinder pipe 11.

[0015] Figure 1 The display shows that the air inlet filter 6 is installed on the upper part of the cabinet of the pressure regulating cabinet 1, and the compressor 8 is fixed on the partition 3 inside the cabinet by the compressor base 22. The air inlet filter 6 provides air source to the compressor 8 through the air inlet pipe 7. The compressor 8 is connected to the air inlet of the main air cylinder 10, and the compressor 8 delivers compressed air to the main air cylinder 10.

[0016] Figure 1 The main air cylinder 10 is fixed to the bottom surface of the cabinet below the partition 3. The main air cylinder 10 is fixed to the main air cylinder mounting base 24 by the main air cylinder fixing strap 23, and the main air cylinder mounting base 24 is fixed to the bottom surface of the cabinet. The air outlet of the main air cylinder 10 is connected to the air distribution valve 9 through the main air cylinder pipe 11. The control panel 2 has a pressure regulating valve air inlet 14 and a pressure regulating valve air outlet 15. The air distribution valve 9 is connected to the pressure regulating valve air inlet 14 through the output air pipe 13, supplying compressed air to the pressure regulating valve air inlet 14.

[0017] Figure 1 The display shows that the pressure relay 12 is installed on the connecting pipe between the compressor 8 and the main air cylinder 10. The control circuit of the pressure relay 12 is connected to the switching circuit of the compressor 8. The pressure relay 12 can control the start and stop of the compressor 8. When the fan switch 20 is manually pressed to connect the compressor circuit, the compressor 8 starts to blow air. When the air pressure in the main air cylinder 10 reaches 900 kPa, the pressure relay 12 automatically disconnects the compressor circuit. When the air pressure in the main air cylinder 10 is lower than 750 kPa during the pressure regulating valve test, the pressure relay 12 automatically connects the compressor circuit to start blowing air to ensure that the main air cylinder 10 maintains a pressure of 900 kPa.

[0018] Figure 1 The display shows that a pressure regulating valve 18 is installed on the output air duct 13 of the air distribution valve 9. The pressure regulating valve 18 is used to control the air pressure at the air inlet 14 of the pressure regulating valve. By rotating the pressure regulating valve 18, the air pressure is adjusted to the working pressure of 600 kPa required by the pressure regulating valve 21.

[0019] Figure 1 The display shows that the air pressure acquisition tube of the dual-needle pressure gauge 17 is connected to the main air cylinder 10. The black pointer of the dual-needle pressure gauge 17 indicates the pressure of the main air cylinder 10, and the red pointer indicates the pressure after adjustment by the air pressure regulating valve 18.

[0020] Figure 1The display shows that the pressure relief valve 19 is installed on the air outlet 15 of the pressure regulating valve. The function of the pressure relief valve 19 is to release the remaining compressed air in the pressure regulating valve 21 after the adjustment test is completed, and to safely disassemble the pressure regulating valve 21.

[0021] Figure 2 , 3 The display shows that the adjustment control panel 2 is connected above the pressure regulating cabinet 1, and the bottom surface of the adjustment control panel 2 is connected to the top surface of the pressure regulating cabinet 1. The adjustment control panel 2 has a pressure regulating valve air inlet 14 and a pressure regulating valve air outlet 15. The air inlet and air outlet of the pressure regulating valve 21 under test are connected to the pressure regulating valve air inlet 14 and the pressure regulating valve air outlet 15 respectively, so as to test and adjust the pressure regulating valve 21.

[0022] Figure 1 The display shows that the contact of the pressure gauge 16 at the outlet of the pressure regulating valve is connected to the air outlet interface 15 of the pressure regulating valve, and the pressure gauge 16 at the outlet of the pressure regulating valve 21 under test can display the air outlet pressure.

[0023] Figure 2 , 3 The display shows that the control panel 2 is equipped with the gauge head of the pressure regulating valve outlet pressure gauge 16, the gauge head of the double needle pressure gauge 17, the switch of the air pressure regulating valve 18, the switch of the pressure relief valve 19, and the fan switch 20 of the compressor fan 8. The testing and adjustment operator can observe the data of each instrument and adjust the corresponding instruments through these gauges.

[0024] The adjustment process of the pressure regulating valve of this utility model is as follows: First, connect the pressure regulating valve 21 to the air inlet port 14 and the air outlet port 15 of the pressure regulating valve respectively and lock them. Then, manually press the fan switch 20 to turn on the compressor fan circuit. When the compressor fan 8 starts blowing air and the air pressure of the main air cylinder 10 reaches 900 kPa, the pressure relay 12 automatically disconnects the compressor fan circuit and the compressor fan 8 stops blowing air. Observe whether the black pointer of the double needle pressure gauge 17 (indicating the main air cylinder pressure) is 900 kPa. Then open the air pressure regulating valve 18 and observe the red pointer (indicating the regulating pressure) of the double needle pressure gauge 17 until it reaches 600 kPa. After the pointer stabilizes at 600 kPa, stop rotating the air pressure regulating valve 18. Observe whether the pressure gauge 16 at the outlet of the pressure regulating valve reaches 600 kPa. If the pressure is below 600 kPa, loosen the adjusting nut on the pressure regulating valve 21, then turn the adjusting handwheel of the pressure regulating valve 21 clockwise while observing the pressure gauge 16. When the pressure reaches 600 kPa, stop turning the adjusting handwheel and tighten the adjusting nut. The pressure adjustment is now complete. If the pressure is above 600 kPa, [further adjustments are needed]. Loosen the adjusting nut on the pressure regulating valve 21, then rotate the adjusting handwheel of the pressure regulating valve 21 counterclockwise. While observing the pointer of the pressure gauge 16 at the outlet of the pressure regulating valve, rotate the adjusting handwheel of the pressure regulating valve 21. When the pointer pressure value reaches 600 kPa, stop rotating the adjusting handwheel of the pressure regulating valve 21 and tighten the adjusting nut. Finally, simultaneously confirm whether the adjusting pressure indicated by the pointer of the double needle pressure gauge 17 is the same as the pointer of the pressure gauge 16 at the outlet of the pressure regulating valve. When they are the same, the pressure value of the pressure regulating valve 21 has been adjusted.

[0025] When disassembling the pressure regulating valve 21 after the test, to ensure operator safety, the air pressure regulating valve 18 must be tightened, and the pressure relief valve 19 opened to release the residual air in the pressure regulating valve 21. Then, the pressure regulating valve 21 can be removed from the test device. If it is necessary to continue testing other pressure regulating valves 21, the above steps can be followed. When no further testing is needed, the fan switch 20 should be placed in the off position.

[0026] An embodiment of this utility model is as follows: The voltage regulating cabinet 1 has a length of 500mm, a width of 430mm, and a height of 1000mm; The length of the air inlet filter 6 is 160mm and the width is 100mm; the length of the filter element is 145mm and the width is 88mm. The diameter of the air inlet duct 7 is 12×8mm, and the length is 35mm; The model number of the compressor fan 8 is 18CY1; The model of the gas distribution valve 9 is 4H310-10; The main air cylinder 10 has a model number of 12L; dimensions: 320mm × 236mm × 318mm. The diameter of the main air cylinder pipe 11 is 12×8mm, and the length is 55mm; Pressure relay 12 is a pressure control switch of type P10E; The diameter of the output duct 13 is 12×8mm, and the length is 52mm; The outlet pressure gauge 16 of the pressure regulating valve is a YN60ZT type 0-1MPa shock-resistant pressure gauge; The double-needle air pressure gauge 17 is a YZS-102 type 0-1200KPa double-needle double-tube pressure gauge; Air pressure regulating valve 18 is an AR2000-02 series air source pressure regulating valve; Pressure relief valve 19 is a J13W-160P needle valve; Fan switch 20 is an HZ5D-20 / 4L01 type changeover switch; The pressure regulating valve 21 is of type QTY-10.

Claims

1. An adjustment device for a pressure regulating valve of an internal combustion locomotive, characterized in that: It includes a pressure regulating cabinet (1), a regulating operating table (2), an air inlet filter (6), an air inlet pipe (7), a compressor (8), a distribution valve (9), a main air cylinder (10), a main air cylinder pipe (11), an output air pipe (13), a pressure regulating valve outlet pressure gauge (16), a double needle pressure gauge (17), and a pressure regulating valve (18). The cabinet of the pressure regulating cabinet (1) is divided into upper and lower layers by a partition (3). The air inlet filter (6) is installed on the upper part of the cabinet of the pressure regulating cabinet (1). The compressor (8) and the distribution valve (9) are respectively fixed on the upper surface of the partition (3). The air inlet filter (6) is connected to the compressor (8) through the air inlet pipe (7). The compressor (8) is connected to the air inlet of the main air cylinder (10). The main air cylinder (10) is fixed on the bottom surface of the cabinet below the partition (3). The air outlet of the main air cylinder (10) is connected to the main air cylinder through the main air cylinder pipe (7). The cylinder pipe (11) is connected to the gas distribution valve (9). The adjustment operation table (2) is connected to the top surface of the pressure regulating cabinet (1). The adjustment operation table (2) has a pressure regulating valve air inlet interface (14) and a pressure regulating valve air outlet interface (15). The gas distribution valve (9) is connected to the pressure regulating valve air inlet interface (14) through the output air pipe (13). The pressure regulating valve outlet pressure gauge (16) is connected to the pressure regulating valve air outlet interface (15). The air pressure acquisition pipe of the double needle pressure gauge (17) is connected to the main air cylinder (10). The valve body of the air pressure regulating valve (18) is installed on the output air pipe (13) of the gas distribution valve (9). The pressure relief valve (19) is installed on the pressure regulating valve air outlet interface (15). The air inlet and air outlet of the pressure regulating valve (21) being tested are respectively connected to the pressure regulating valve air inlet interface (14) and pressure regulating valve air outlet interface (15) of the adjustment operation table (2).

2. The adjusting device for the pressure regulating valve of an internal combustion locomotive according to claim 1, characterized in that: The pressure regulating cabinet (1) is equipped with casters (4) on the bottom surface of the cabinet and a trolley handle (5) on one side of the upper end of the pressure regulating cabinet (1).

3. The adjusting device for the pressure regulating valve of an internal combustion locomotive according to claim 1, characterized in that: The compressor (8) is fixed on the partition (3) inside the cabinet by the compressor base (22). The main air cylinder (10) is fixed on the main air cylinder fixing seat (24) by the main air cylinder fixing belt (23). The main air cylinder fixing seat (24) is fixed on the bottom surface of the cabinet. The pressure relay (12) is installed on the connecting pipe between the compressor (8) and the main air cylinder (10). The control circuit of the pressure relay (12) is connected to the switching circuit of the compressor (8).

4. The adjusting device for the pressure regulating valve of an internal combustion locomotive according to claim 1, characterized in that: The pressure gauge head of the pressure regulating valve outlet pressure gauge (16), the pressure gauge head of the double needle pressure gauge (17), the switch of the air pressure regulating valve (18), the switch of the pressure relief valve (19), and the fan switch (20) of the compressor fan (8) are respectively fixed on the adjustment operation table (2).

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