Device for preventing air inlet pipeline from collapsing in diesel engine bench test
By installing a mechanism to prevent collapse at both ends of the intake pipe in the diesel engine bench test, the problem of pipeline disconnection caused by high temperature, high pressure and vibration is solved to ensure test safety and equipment integrity.
Patent Information
- Application Number
- CN202422270910.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The frequent collapse of the intake pipeline caused by high temperature, high pressure and vibration in the diesel engine bench test cannot be effectively avoided, affecting the safety and progress of the test.
Install a mechanism to prevent disintegration from both ends of the rubber pipe of the intake pipe, including a support seat, an anti-loosening screw and a nut. Through the movable gap and the tightening of the nut, the rubber pipe will be prevented from disengaging from the metal pipe.
It effectively prevents the disconnection of rubber tubes caused by deformation or aging in high temperature and high pressure and vibration environments, ensuring test safety and reducing the impact on the equipment.
Smart Images
Figure CN223257777U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic pipeline auxiliary tools, in particular to a device for preventing an intake pipeline from collapsing during a diesel engine bench test. Background Art
[0002] During bench tests, diesel engines generate air with relatively high temperature and pressure to participate in combustion and work. The specific process is that the supercharger sucks in external air and compresses it to increase its temperature. The air then passes through a pipe to enter the intercooler for cooling. After exiting the intercooler, it passes through a pipe and then enters the engine.
[0003] During this process, air is pressurized by a supercharger and temperature-controlled by an intercooler before being transported through tooling piping to the diesel engine for combustion. Due to the increased temperature and pressure of supercharged air, leaks often occur in pipes, equipment, and joints. These leaks are primarily caused by equipment damage, pipe breakage, and joint collapse. Equipment damage and pipe breakage are less common and can be resolved within an acceptable lifespan through repair and replacement of equipment and pipes. Joint collapse, however, is more common and cannot be completely avoided with existing technology.
[0004] Diesel engines generate large vibrations during bench testing. When existing diesel engines are bench tested, the intake pipes are connected with metal tooling pipes. The layout of the tooling pipes is designed based on the position between the engine and the equipment. The shape and direction are relatively complex. The interface alignment and vibration resistance of the pipes at both ends are poor. Therefore, the interfaces are often clamped with rubber hoses and metal clamps. This connection method can withstand airflows with higher temperatures and pressures, absorb harmful vibrations generated by the diesel engine, and avoid damage to components caused by vibrations absorbed by hard-connected pipes. It can also compensate for the inevitable misalignment between the two ends of the pipes due to assembly and deformation. For details, see Figure 1 .
[0005] Existing intake lines use a rubber hose connecting two metal sections, with clamps clamped at both ends to connect the intercooler and engine. This structure, with a high-temperature, high-pressure rubber hose and a high-strength clamp installed between the two metal sections, addresses the issues of poor alignment in longer sections and absorbs vibration during use, reducing damage to the lines. However, the clamps and rubber hoses are susceptible to aging and deformation over time. Furthermore, the sudden pressure, temperature, and vibration shocks generated by various engine test conditions can frequently cause the rubber hose to break apart from the metal hose. This phenomenon cannot be avoided even with new hoses, posing a safety risk to the test engine, surrounding equipment, and personnel.
[0006] Although using a rigid connection instead of a rubber tube will not cause collapse, the following problems will occur:
[0007] (1) The entire pipeline is rigidly connected. The vibration generated by the diesel engine acts on the metal pipe for a long time, which quickly causes damage to the pipeline.
[0008] (2) Rigid connection requires high precision in pipe interface processing and assembly, and each connection is prone to interface misalignment and air leakage.
[0009] In view of this, it is necessary to develop a device for preventing the intake pipe from collapsing during diesel engine bench testing to solve the above problems. Utility Model Content
[0010] The technical problem to be solved by the present invention is to provide a device to prevent the collapse of the intake pipe during the diesel engine bench test. By installing anti-collapse mechanisms at both ends of the flexible connection of the intake pipe, the collapse of the pipe caused by the deterioration of the pipe alignment due to factors such as high temperature, high pressure, and vibration during the test is avoided.
[0011] In order to solve the above technical problems, the technical solution adopted by the present invention is:
[0012] A device for preventing the collapse of an intake pipe during a diesel engine bench test comprises a first metal pipe, a second metal pipe docked with the first metal pipe, a rubber tube inserted into the ends of the first and second metal pipes to connect the first and second metal pipes together, a plurality of clamps disposed on the outside of the rubber tube and capable of tightening the rubber tube, and a plurality of anti-collapse mechanisms disposed at both ends of the rubber tube; the anti-collapse mechanisms comprise two support seats disposed on the first and second metal pipes, respectively, an anti-loosening screw mounted between the two support seats, and two nuts disposed at one end of the anti-loosening screw for tightening.
[0013] A further improvement of the technical solution of the present utility model is that when the two nuts are installed on the anti-loosening screw, the first nut is first screwed onto the anti-loosening screw, and the first nut is screwed in to a certain position so that a movable gap is maintained between the anti-loosening screw and the support seat, and the anti-loosening screw can rotate freely, and then the second nut is screwed in to lock the first nut.
[0014] A further improvement of the technical solution of the present utility model is that the movable gap is 10 mm.
[0015] A further improvement of the technical solution of the present utility model is that the movable gap includes the distance L1 between one end of the anti-loosening screw and the support seat and the distance L2 between the first nut and the other support seat, and both L1 and L2 are 5 mm.
[0016] A further improvement of the technical solution of the present invention is that: two anti-breakage mechanisms are provided, which are symmetrically arranged at both ends of the rubber tube.
[0017] A further improvement of the technical solution of the present invention is that the number of the clamps is set according to the length of the rubber tube, generally set to an even number, and symmetrically arranged on both sides of the connection between the rubber tube and the first metal pipeline and the second metal pipeline.
[0018] A further improvement of the technical solution of the present invention is that the support seat is welded to the ends of the first metal pipeline and the second metal pipeline close to the rubber tube.
[0019] A further improvement of the technical solution of the present invention is that: the support seat includes a base and a support rod arranged on the upper part of the base; the upper part of the support rod is provided with a support hole for the anti-loosening screw to pass through.
[0020] A further improvement of the technical solution of the present invention is that the distance between the support seat provided on the first metal pipeline and the support seat provided on the second metal pipeline is greater than the length of the rubber tube.
[0021] A further improvement of the technical solution of the present utility model is that the length of the anti-loosening screw is greater than the distance between the support seat provided on the first metal pipeline and the support seat provided on the second metal pipeline.
[0022] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is:
[0023] The utility model adds anti-collapse mechanisms at both ends of the flexible connection of the air intake pipeline. When the soft connection part of the rubber tube of the air intake pipeline is about to be separated from the metal pipeline due to deformation, aging and damage, the process is stopped in time. The problem is discovered during the shutdown inspection and is dealt with in time, avoiding safety hazards caused by pipeline collapse during the test and affecting the test progress. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.
[0025] Figure 1 This is a diagram of the connection mode of the intake pipe in the existing diesel engine bench test in the background technology of the present utility model;
[0026] Figure 2This is a schematic structural diagram of a device for preventing the collapse of an intake pipe in a diesel engine bench test provided in an embodiment of the present utility model;
[0027] Among them, 1. support seat; 2. clamp; 3. rubber tube; 4. anti-loosening screw; 5. first metal pipeline; 6. second metal pipeline. DETAILED DESCRIPTION
[0028] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "several" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
[0032] like Figure 2As shown, a device for preventing the collapse of an intake pipe during a bench test of a diesel engine includes a first metal pipe 5, a second metal pipe 6 connected to the first metal pipe 5, a rubber tube 3 inserted at the ends of the first metal pipe 5 and the second metal pipe 6 to connect the first metal pipe 5 and the second metal pipe 6 together, and a plurality of clamps 2 arranged on the outside of the rubber tube 3 and capable of tightening the rubber tube 3. A plurality of anti-collapse mechanisms are provided at both ends of the rubber tube 3; the anti-collapse mechanisms include two support seats 1 respectively provided on the first metal pipe 5 and the second metal pipe 6, an anti-loosening screw 4 installed between the two support seats 1, and two nuts provided at one end of the anti-loosening screw 4 for tightening.
[0033] Furthermore, when the two nuts are installed on the anti-loosening screw 4, first screw the first nut onto the anti-loosening screw 4, screw the first nut into a certain position, so that a movable gap is maintained between the anti-loosening screw 4 and the support base 1, and the anti-loosening screw 4 can rotate freely, and then screw in the second nut to lock the first nut.
[0034] Furthermore, the movable gap is 10 mm.
[0035] Furthermore, the movable gap includes a distance L1 between one end of the anti-loosening screw 4 and the support seat 1 and a distance L2 between the first nut and the other support seat 1, and both L1 and L2 are 5 mm.
[0036] Furthermore, two anti-breakage mechanisms are provided, symmetrically arranged at both ends of the rubber tube 3 .
[0037] Furthermore, the number of clamps 2 is set according to the length of the rubber tube 3 , generally set to an even number, and symmetrically arranged on both sides of the connection between the rubber tube 3 and the first metal pipeline 5 and the second metal pipeline 6 .
[0038] Furthermore, the support seat 1 is welded to the ends of the first metal pipeline 5 and the second metal pipeline 6 close to the rubber tube 3 .
[0039] Furthermore, the support seat 1 includes a base and a support rod arranged on the upper part of the base; the upper part of the support rod is provided with a support hole for the anti-loosening screw 4 to pass through.
[0040] Furthermore, the distance between the support base 1 provided on the first metal pipe 5 and the support base 1 provided on the second metal pipe 6 is greater than the length of the rubber tube 3 .
[0041] Furthermore, the length of the anti-loosening screw 4 is greater than the distance between the support base 1 provided on the first metal pipeline 5 and the support base 1 provided on the second metal pipeline 6 .
[0042] The utility model provides a device for preventing the collapse of the intake pipe during the diesel engine bench test, which is installed and connected according to the following method:
[0043] Step 1: Insert one end of the first metal pipe 5 on the right and the second metal pipe 6 on the left into the rubber tube 3 from both sides respectively; that is, insert the second metal pipe 6 into the left side of the rubber tube 3, and insert the first metal pipe 5 into the right side of the rubber tube 3.
[0044] Step 2: Fix the clamps 2 on both sides of the rubber tube 3 inserted into the first metal pipeline 5 and the second metal pipeline 6, and tighten the fixing bolts; in this embodiment, two clamps 2 are set on both sides of the rubber tube 3.
[0045] Step 3, respectively pass the two anti-loosening screws 4 through the four support seats 1 set on the first metal pipe 5 and the second metal pipe 6 on both sides of the rubber tube 3; that is, two support seats 1 are symmetrically set on the first metal pipe 5, and two support seats 1 are also symmetrically set on the second metal pipe 6, and the anti-loosening screws 4 pass through the two support seats 1 set on the first metal pipe 5 and the second metal pipe 6, as shown in FIG. Figure 2 shown.
[0046] Step 4, screw the first nut onto the anti-loosening screw 4, screw the first nut into a certain position, so that there is a movable gap of about 10mm between the anti-loosening screw 4 and the support base 1, and the anti-loosening screw 4 can rotate freely, and then screw in the second nut to lock the first nut.
[0047] After the connection is completed, the clamp 2 fastens the rubber tube 3 to the first metal pipe 5 and the second metal pipe 6 through the friction force generated by the clamping.
[0048] Working principle:
[0049] During diesel engine bench testing, environmental factors such as high-temperature, high-pressure intake air and high-frequency vibration repeatedly act on the intake pipe. The vibration and high temperature are absorbed by the rubber pipe. When these accumulate to a certain level, the clamp 2 and rubber tube 3 begin to deform and break. The tightening friction exerted on the left and right metal pipes (second metal pipe 6 and first metal pipe 5) decreases, and the first and second metal pipes 5 and 6 begin to move relative to each other. When the displacement reaches 10 mm, the anti-loosening screw 4 contacts the support base 1 and receives force, stopping the movement of the first and second metal pipes 5 and 6, thus preventing the rubber tube 3 from disengaging.
[0050] After the test is completed and the machine is shut down, check the connection between the rubber tube 3 and the first metal pipe 5 or the second metal pipe 6. If there is no gap between the anti-loosening screw 4 and the support seat 1, it is necessary to check the condition of the clamp 2 and the rubber tube 3 and evaluate whether they need to be replaced.
[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A device for preventing the collapse of an intake pipe during a bench test of a diesel engine, comprising a first metal pipe (5), a second metal pipe (6) connected to the first metal pipe (5), a rubber pipe (3) inserted into the ends of the first metal pipe (5) and the second metal pipe (6) and connecting the first metal pipe (5) and the second metal pipe (6), and a plurality of clamps (2) arranged on the outside of the rubber pipe (3) and capable of fastening the rubber pipe (3), characterized in that: A plurality of anti-breakaway mechanisms are provided at both ends of the rubber tube (3); the anti-breakaway mechanisms comprise two support seats (1) respectively provided on the first metal pipe (5) and the second metal pipe (6), an anti-loosening screw (4) installed between the two support seats (1), and two nuts provided at one end of the anti-loosening screw (4) for fastening.
2. The device for preventing the collapse of the intake pipe in a diesel engine bench test according to claim 1, characterized in that: When the two nuts are mounted on the anti-loosening screw (4), the first nut is first screwed onto the anti-loosening screw (4), and the first nut is screwed in to a certain position so that a movable gap is maintained between the anti-loosening screw (4) and the support seat (1), and the anti-loosening screw (4) can rotate freely, and then the second nut is screwed in to lock the first nut.
3. The device for preventing the collapse of the intake pipe in a diesel engine bench test according to claim 2, characterized in that: The movable gap is 10 mm.
4. The device for preventing the collapse of the intake pipe during a diesel engine bench test according to claim 2, characterized in that: The movable gap includes a distance L1 between one end of the anti-loosening screw (4) and the support seat (1) and a distance L2 between the first nut and the other support seat (1), and both L1 and L2 are 5 mm.
5. The device for preventing the collapse of the intake pipe in a diesel engine bench test according to claim 1, characterized in that: Two anti-collapse mechanisms are provided, symmetrically arranged at both ends of the rubber tube (3).
6. The device for preventing the collapse of the intake pipe during a diesel engine bench test according to claim 1, characterized in that: The number of the clamps (2) is set according to the length of the rubber tube (3), generally set to an even number, and symmetrically arranged on both sides of the connection between the rubber tube (3) and the first metal pipeline (5) and the second metal pipeline (6).
7. The device for preventing the collapse of the intake pipe in a diesel engine bench test according to claim 1, characterized in that: The support seat (1) is welded and arranged on the ends of the first metal pipeline (5) and the second metal pipeline (6) close to the rubber tube (3).
8. The device for preventing the collapse of the intake pipe during a diesel engine bench test according to claim 1, characterized in that: The support seat (1) comprises a base and a support rod arranged on the upper portion of the base; the upper portion of the support rod is provided with a support hole for the anti-loosening screw (4) to pass through.
9. The device for preventing the collapse of the intake pipe during a diesel engine bench test according to claim 1, characterized in that: The distance between the support seat (1) provided on the first metal pipeline (5) and the support seat (1) provided on the second metal pipeline (6) is greater than the length of the rubber tube (3).
10. The device for preventing the collapse of the intake pipe in a diesel engine bench test according to claim 1, characterized in that: The length of the anti-loosening screw (4) is greater than the distance between the support seat (1) provided on the first metal pipeline (5) and the support seat (1) provided on the second metal pipeline (6).