Vehicle-mounted CNG cylinder connecting gas pipeline sealing detection assembly

Abstract

The utility model relates to a vehicle-mounted CNG gas cylinder connecting gas pipe road leakproofness detection subassembly, it includes gas path subassembly, gas path subassembly includes gas pump and with the gas path channel of gas pump connection, the one -way pressure regulating valve, solenoid valve spare and pipe joint part that are electrically connected in proper order on the gas path channel, the barometer is provided with in the solenoid valve spare export, there is air filter part on the gas path channel, the pipe joint part is connected with the jar body joint through the extension pipe road, the utility model discloses reasonable in design, compact structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to a component for detecting the sealing performance of CNG cylinder connection pipelines in vehicles, and belongs to the field of commercial vehicle manufacturing technology. Background Technology

[0002] The safety requirements for CNG cylinders in commercial vehicles are high, and the sealing must be tight. Because CNG cylinders consist of multiple cylinders connected by steel pipes with more than ten joints, and these connections are made manually, there is a significant safety hazard due to insufficient airtightness.

[0003] The disadvantages of the current method: The current method involves filling the CNG gas tank before testing, which poses a significant safety hazard. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a vehicle-mounted CNG cylinder connection pipeline sealing test component, mainly to solve the problem of sealing of CNG cylinder connection pipelines in commercial vehicles.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A sealing test assembly for a vehicle-mounted CNG cylinder connection pipeline includes a gas pipeline assembly; the gas pipeline assembly includes a gas pump and a gas pipeline channel connected to the gas pump; a one-way pressure regulating valve, a solenoid valve and a pipe joint are electrically connected in sequence on the gas pipeline channel;

[0007] A pressure gauge is installed at the outlet of the solenoid valve.

[0008] There is an air filter in the air passage;

[0009] The pipe fitting is connected to the tank fitting via an extended pipe.

[0010] The tank connector is connected to the connector part of the gas tank.

[0011] As a further improvement to the above technical solution:

[0012] The components include an immersion tank; an immersion support frame that is raised and lowered within the immersion tank;

[0013] The support frame is used to place the gas tank lying flat;

[0014] Transparent glass is installed around the immersion tank.

[0015] A connector is attached to the end of the gas tank.

[0016] The soaking tank is filled with alcohol, water, or kerosene.

[0017] A transparent glass panel is installed at the bottom of the soaking tank.

[0018] A separate internal bracket is movably installed within the fixed outer frame;

[0019] The support frame includes a fixed outer frame;

[0020] The fixed outer frame includes a vertically arranged support skeleton; a bottom frame is connected between the support skeletons;

[0021] Side baffles are provided on both sides of the width direction of each support frame;

[0022] A C-shaped bracket with two upward-facing C-shaped openings is provided in the width direction of the supporting frame;

[0023] A connecting frame that connects adjacent C-shaped brackets vertically;

[0024] A connecting rod is attached to the outside of the C-type bracket;

[0025] An end connector is provided at the end of the connecting rod.

[0026] Reversing retaining rings are fitted at both ends of the gas tank;

[0027] Adjacent reversing retaining rings are connected by end connecting brackets;

[0028] A traction head is installed on the connecting frame.

[0029] Diagonal braces connect the support frame along its length.

[0030] The ingenious aspect of this invention is that it allows for pre-filling with gas and subsequent airtightness testing of the steel pipe connection joints. This invention solves the problem of airtightness in CNG cylinder connection steel pipes, enabling pre-testing, which is efficient, fast, and effectively reduces production costs.

[0031] This invention allows for easy visual inspection of airtightness and enables modular operation.

[0032] This utility model is reasonably designed, low in cost, sturdy and durable, safe and reliable, simple to operate, time-saving and labor-saving, cost-saving, compact in structure and easy to use. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the soaking tank of this utility model.

[0034] Figure 2 This is a schematic diagram of the base frame structure of this utility model.

[0035] Figure 3 This is a schematic diagram of the gas path principle of this utility model.

[0036] The components include: 1. Gas tank body; 2. Connector; 3. Immersion tank body; 4. Transparent glass; 5. Support frame; 6. Fixed outer frame; 7. Split inner bracket; 8. Support skeleton; 9. Bottom frame; 10. Diagonal brace; 11. Side baffle; 12. C-shaped bracket; 13. Connecting frame; 14. Connecting rod; 15. End connecting frame; 16. Reversing retaining ring; 17. Pulling head; 18. Air pump; 19. One-way pressure regulating valve; 20. Solenoid valve; 21. Pressure gauge; 22. Air filter; 23. Pipe connector; 24. Tank body connector; 25. Extended pipeline. Detailed Implementation

[0037] like Figure 1-3 As shown, the vehicle-mounted CNG cylinder connection gas pipeline sealing test assembly of this embodiment includes a gas pipeline assembly; the gas pipeline assembly includes a gas pump 18 and a gas pipeline channel connected to the gas pump 18; a one-way pressure regulating valve 19, a solenoid valve 20 and a pipe joint 23 are electrically connected in sequence on the gas pipeline channel;

[0038] A pressure gauge 21 is installed at the outlet of the solenoid valve component 20;

[0039] An air filter section 22 is provided in the air passage to achieve air filtration;

[0040] The pipe fitting 23 is connected to the tank fitting 24 via an extended pipe 25, enabling the filling of the required tank.

[0041] The tank connector 24 is connected to the connector part 2 of the gas tank 1.

[0042] Compared to traditional manual leak detection, this invention further improves upon traditional methods by proposing immersion observation in liquid and observation through air bubbles. The components include an immersion tank 3, preferably supported by a frame, with observation through a large glass panel; an immersion support frame 5 is raised and lowered within the immersion tank 3 to achieve overall placement and prevent damage to pipelines during transport.

[0043] The support frame 5 is used to place the flat gas tank 1; it is used to install a gas tank required for a car, prefabricated and modularly tested, thereby improving efficiency and avoiding leakage during installation.

[0044] Transparent glass 4 is installed around the soaking tank 3, and the weight is supported by the frame.

[0045] A connector 2 is connected to one end of the gas tank 1 to enable pipeline connection between the tanks.

[0046] The soaking tank 3 is filled with alcohol, water or kerosene, preferably kerosene or water.

[0047] A transparent glass 4 is installed at the bottom of the immersion chamber 3 to allow bottom observation, but this is not necessary because of the side of the connector.

[0048] A prefabricated internal bracket 7 is installed within the fixed outer frame 6. If it meets the requirements, it can be directly installed on the vehicle, avoiding secondary installation.

[0049] The support frame 5 includes a fixed outer frame 6; thus achieving fixed support.

[0050] The fixed outer frame 6 includes a vertically arranged support skeleton 8; a bottom frame 9 is connected between the support skeletons 8; the bottom frame 9 is thickened and widened to avoid overall deformation.

[0051] Side baffles 11 are provided on both sides of the width direction of each support frame 8 to prevent the gas tank from swaying back and forth and to achieve vertical guidance;

[0052] A C-shaped bracket 12 with two upward-facing C-shaped openings is provided in the width direction of the support frame 8 to support the tank.

[0053] The connecting frame 13 connects the upper and lower parts of the adjacent C-shaped brackets 12; it ensures the overall stability of the tank and can be disassembled after installation on the car.

[0054] To prevent the gas cylinder from swaying back and forth, a connecting rod 14 is attached to the outside of the C-shaped bracket 12;

[0055] An end connector 15 is provided at the end of the connecting rod 14.

[0056] Reversing retaining rings 16 are fitted at both ends of the gas tank body 1;

[0057] Adjacent reversing retaining rings 16 are connected by end connecting brackets 15;

[0058] A traction head 17 is provided on the connecting frame 13 to enable hoisting onto the vehicle.

[0059] Diagonal braces 10 are connected between the support frame 8 along its length to improve strength.

[0060] The working principle of this utility model is to place the gas tank 1 layer by layer on the C-shaped bracket 12, and fix the gas tank by connecting the frame 13, connecting the tie rod 14, the end connecting frame 15, and the reversing retaining ring 16, and then connect the pipeline.

[0061] The support frame 5 is placed into the fixed outer frame 6 using a crane, and then the fixed outer frame 6 is lifted by the crane and placed into the immersion tank 3. High-pressure compressed air is blown in by the air pump 18 to conduct a sealing and pressure holding test. When pressure is released, the location of the bubbles is observed visually. Then, the support frame 5 is lifted out of the water and repaired by welding or sealing. If it passes the test, the entire support frame 5 is lifted out of the liquid, the air supply is cut off, and the support frame 5 is dried. The internal bracket 7 is then lifted onto the vehicle frame for installation or subsequent routine testing.

[0062] Among them, such as Figure 3 Its organizational components:

[0063] The structure mainly consists of a one-way pressure regulating valve, a 24V power supply, a solenoid valve switch, an air filter, a pressure gauge, a timer, an air pipe switch, an air pipe, and a CNG inflation connector.

[0064] Its working principle:

[0065] The air pump supplies air to the one-way pressure regulating valve. The air passes through the solenoid valve. Pressing the solenoid valve switch allows the air to flow through the solenoid valve, through the pressure gauge, and then further into the air filter. The air then connects to the CNG filling port via a hose, injecting 1 MPa of pressure into the CNG hose. Close the solenoid valve switch, start the timer, and time 5 minutes. Check the pressure gauge reading. If the pressure gauge remains unchanged, the airtightness is acceptable; if the pressure gauge drops, there is a leak at the steel pipe joint or an inadequate airtightness, requiring on-site repair.

[0066] This utility model is described in detail for the purpose of making the disclosure clearer, and the prior art will not be listed one by one.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. It is obvious to those skilled in the art that multiple technical solutions of this utility model can be combined. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. All technical contents not described in detail in this utility model are publicly known technologies.

Claims

1. A kind of vehicle-mounted CNG cylinder connecting gas pipe line leak detection assembly, it is characterized in that: It includes an air circuit assembly; the air circuit assembly includes an air pump (18) and an air circuit passage connected to the air pump (18); a one-way pressure regulating valve (19), a solenoid valve (20) and a pipe joint (23) are electrically connected in sequence on the air circuit passage. A pressure gauge (21) is installed at the outlet of the solenoid valve (20); There is an air filter (22) in the air passage; The pipe fitting (23) is connected to the tank fitting (24) via an extended pipe (25); The tank connector (24) is connected to the connector (2) of the gas tank (1).

2. The sealing detection assembly for the connecting gas pipeline of the vehicle-mounted CNG cylinder according to claim 1, characterized in that: The components include an immersion tank (3); an immersion support frame (5) is raised and lowered within the immersion tank (3); The support frame (5) is used to place the flat gas tank (1); Transparent glass (4) is installed around the soaking tank (3).

3. The sealing detection assembly for the connecting gas pipeline of the vehicle-mounted CNG cylinder according to claim 2, characterized in that: A connector (2) is connected to the end of the gas tank (1); Alcohol, water or kerosene is added to the soaking tank (3).

4. The sealing detection assembly for the connecting gas pipeline of the vehicle-mounted CNG cylinder according to claim 2, characterized in that: A transparent glass (4) is installed at the bottom of the soaking tank (3).

5. The sealing detection assembly for the connecting gas pipeline of the vehicle-mounted CNG cylinder according to claim 2, characterized in that: A separate internal bracket (7) is movably installed within the fixed outer frame (6).

6. The sealing detection assembly for the connecting gas pipeline of the vehicle-mounted CNG cylinder according to claim 5, characterized in that: The support frame (5) includes a fixed outer frame (6); The fixed outer frame (6) includes a vertically arranged support frame (8); a bottom frame (9) is connected between the support frames (8); Side baffles (11) are provided on both sides of the width direction of each support frame (8). A C-shaped bracket (12) with two upward-facing C-shaped openings is provided in the width direction of the supporting frame (8). The connecting frame (13) connects the adjacent C-type brackets (12) vertically. A connecting rod (14) is connected to the outside of the C-type bracket (12); An end connector (15) is provided at the end of the connecting rod (14). Reversing retaining rings (16) are fitted at both ends of the gas tank (1); Adjacent reversing retaining rings (16) are connected by end connecting brackets (15); A traction head (17) is provided on the connecting frame (13).

7. The on-board CNG cylinder connection pipeline sealing test component according to claim 6, characterized in that: Diagonal bracing (10) is connected between the support frame (8) along its length.

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