Fixing and sealing device for MTU cylinder block water channel leakage test

Abstract

The utility model discloses a fixed sealing device used for MTU cylinder block water channel leakage test, comprising a middle sealing member having a circular tube-shaped structure; the first sealing piece is located at one end of the middle sealing piece, the first sealing piece is of a disc-shaped structure, the size of the first sealing piece is matched with the size of the bottom face of the middle sealing piece, and a first through hole is formed in the circle center of the first sealing piece; the second sealing piece is located at the other end of the middle sealing piece, and the size of the second sealing piece is matched with the size of the bottom face of the middle sealing piece; a second through hole is formed in the circle center of the second sealing piece; one end of the movable fixing piece is movably connected into the first through hole, and the other end of the movable fixing piece is movably connected into the second through hole. According to the utility model, the light-weight integral structure can be realized, and the sealing and fixing strength can be improved.

Description

Technical Field

[0001] This utility model relates to the field of MTU cylinder block water passage leak testing, and in particular to a fixed sealing device for MTU cylinder block water passage leak testing. Background Technology

[0002] In the manufacturing process of heavy-duty diesel engines, water channel leak testing of the cylinder block is required. Heavy-duty diesel cylinder blocks are characterized by their large weight and volume. Without a leak testing device, cylinder liners must be assembled and tested for leaks. After the leak test, the cylinder block is disassembled and cleaned. The entire process requires two sets of tools for installing and removing cylinder liners, which is not only cumbersome but also increases the labor intensity of the workers. Taking a 16-cylinder engine as an example, workers need to carry 17KG cylinder liners by hand, ensuring the cylinder bores are clean and free of metal shavings before placing them into the bores; otherwise, the bores will be damaged. Therefore, extensive cleaning work is required before placement to avoid damage. If damage occurs, welding repair is necessary, further increasing the workload. Once all 16 cylinder liners are placed in the cylinder block, a special tool is used to press the liners into the cylinder block. After the leak test, another special tool is used to pull out the cylinder liners. At this point, the cylinder liners are not completely detached from the cylinder block and must be carefully removed manually. Therefore, the problem with existing technology is that the leak testing device is heavy and has low installation and disassembly efficiency; while simply reducing the weight of the device will affect the fixation and sealing strength of the device.

[0003] As production line capacity increases, process equipment must not only consider how to meet the needs of capacity improvement, but also how to achieve the effect of lightweight process equipment itself, so as to control the quality of the product production process and put forward higher requirements for improving product reliability.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a fixed sealing device for leak testing of the water passages in MTU cylinder blocks, which can solve the problems existing in the background technology.

[0006] To achieve the above objectives, this utility model provides a fixed sealing device for leak testing of the water passages in MTU cylinder blocks, characterized in that it includes: a central sealing element, which is a cylindrical structure; a first sealing element, located at one end of the central sealing element, which is a disc-shaped structure, and its dimensions are matched with the bottom surface dimensions of the central sealing element, with a first through hole at its center; a second sealing element, located at the other end of the central sealing element, which is also a disc-shaped structure, and its dimensions are matched with the bottom surface dimensions of the central sealing element, with a second through hole at its center; and a movable fixing element, one end of which is movably connected to the first through hole, and the other end of which is movably connected to the second through hole.

[0007] In one or more embodiments, the inner wall of the second through hole is provided with threads, and the movable fixing member is a tension screw structure, including a head and a rod body, wherein the surface shape of the rod body is configured to match the threads of the inner wall of the second through hole.

[0008] In one or more embodiments, the head is larger than the diameter of the first through hole, the rod body moves inside the first through hole, and the head moves on the side of the first seal away from the central seal.

[0009] In one or more embodiments, the first seal includes: a cylinder head bolt for connecting to a bolt hole in an engine cylinder head; and an open-hole gasket located at a position corresponding to the cylinder head bolt and disposed on the side of the first seal near the central seal.

[0010] In one or more embodiments, the second seal includes convex teeth, and the central seal includes concave teeth, wherein the convex surface of the convex teeth and the concave surface of the concave teeth are disposed opposite to each other and are shaped to fit each other.

[0011] In one or more embodiments, the system further includes an attachment comprising a first O-ring, an O-ring positioning ring, a second O-ring, a hexagonal head screw, a pin, a second seal, and a handle.

[0012] In one or more embodiments, the handle is disposed on the surface of the first seal, and the hex socket head cap screw is used to secure the handle.

[0013] In one or more embodiments, the first O-ring, the O-ring positioning ring, and the second O-ring are used to fix the cylinder of the engine, and the pin is used to fix the second seal to prevent it from being driven by the movable fixing part.

[0014] Compared with the prior art, the various technical solutions and embodiments provided by this utility model include at least the following technical effects or advantages:

[0015] The cylinder is fixed by setting up four components: a central seal, a first seal, a second seal, and a movable fixing component, which reduces the complexity and weight of the fixing device and improves the efficiency of leak testing.

[0016] The leak test device can be fixed and sealed simply by screwing the movable fasteners together to connect the middle seal, the first seal, and the second seal, thus improving work efficiency. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and are intended to explain the invention. They are intended to be seen as illustrative of various combinations of preferred embodiments and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the overall structure of a fixed sealing device for leak testing of MTU cylinder block water passages provided by this utility model;

[0019] Figure 2 A side view of the overall structure of a fixed sealing device for leak testing of MTU cylinder block water passages provided by this utility model;

[0020] The labels in the diagram represent: 1-first seal, 2-movable fixing part, 3-perforated sealing gasket, 4-cylinder head bolt, 5-middle seal, 6-first O-ring, 7-O-ring, 8-second O-ring, 9-hex socket head cap screw, 10-pin, 11-second seal, 12-handle. Detailed Implementation

[0021] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises", "made for", etc., shall be understood to include the stated elements or components, without excluding other elements or other components.

[0022] The purpose of this invention is to provide a fixed sealing device for leak testing of the water passages in MTU cylinder blocks, achieving a lightweight overall structure and improving the sealing and fixing strength.

[0023] Example 1:

[0024] This embodiment provides a fixed sealing device for leak testing of the water passages in an MTU cylinder block, characterized by comprising: a central sealing element 5, which is a cylindrical structure; a first sealing element 1, located at one end of the central sealing element 5, which is a disc-shaped structure, with its dimensions matching the bottom surface dimensions of the central sealing element 5, and a first through hole at its center; a second sealing element 11, located at the other end of the central sealing element 5, which is also a disc-shaped structure, with its dimensions matching the bottom surface dimensions of the central sealing element 5, and a second through hole at its center; and a movable fixing element 2, one end of which is movably connected to the first through hole, and the other end of which is movably connected to the second through hole.

[0025] Specifically, in order to make the leak testing device lightweight while meeting the strength requirements for sealing and fixing, this embodiment includes a central sealing element 5, a first sealing element 1, a second sealing element 11, and a movable fixing element 2. The central sealing element 5, the first sealing element 1, and the second sealing element 11 are combined to form a barrel-shaped closed space to accommodate the cylinder body and achieve sealing and fixing of the cylinder body. The movable fixing element 2 is provided, which is movably connected to the first sealing element 1 and the second sealing element 11 and fixed to the bottom of the central sealing element 5.

[0026] In a preferred embodiment of this invention, the inner wall of the second through hole is provided with threads, and the movable fixing member 2 is a tension screw structure, including a head and a rod body, the surface shape of which is matched with the threads of the inner wall of the second through hole.

[0027] In a preferred embodiment of this invention, the head is larger than the diameter of the first through hole, the rod body moves inside the first through hole, and the head moves on the side of the first seal 1 away from the central seal 5.

[0028] Specifically, to achieve stable fixation, the movable fixing member 2 is configured as a tensioning screw. The fixing principle of the movable fixing member 2 is that at the end connected to the first sealing member 1, the head is set to be larger than the hole diameter, using structural strength to lock and limit the first sealing member 1; at the end connected to the second sealing member 11, the inner wall of the second through hole is provided with threads, and by screwing on the internal and external threads, the second sealing member 11 can be brought closer to the first sealing member 1 until the first sealing member 1 and the second sealing member 11 are tightly fitted to both sides of the central sealing member 5, thus achieving sealing and fixation. The user only needs to assemble the multiple components of this embodiment and achieve locking by rotating the movable fixing member 2 to fix the cylinder body. Disassembly is performed by simply reversing the movable fixing member 2. The usage method is simple and convenient, and the production efficiency is improved. The existing method can test 2.5 cylinder bodies in 8 hours, while after using this embodiment, the assembly quantity in 8 hours increases to 4, and the efficiency is improved by about 60%.

[0029] In a preferred embodiment of this invention, the first sealing element 1 includes: a cylinder head bolt 4 for connecting to the bolt holes in the engine cylinder head; and an open-hole sealing gasket 3 located at a position corresponding to the cylinder head bolt 4, disposed on the side of the first sealing element 1 near the central sealing element 5. Specifically, the cylinder head bolt 4 is used to fix the engine components, achieving a tighter fixing strength.

[0030] In a preferred embodiment of this invention, the second sealing member 11 includes convex teeth, and the central sealing member 5 includes concave teeth. The convex surfaces of the convex teeth and the concave surfaces of the concave teeth are opposite to each other and are shaped to fit together. Specifically, to prevent the second sealing member 11 and the central sealing member 5 from sliding sideways, they are provided with contact surfaces that fit together in a concave-convex shape. After the movable fixing member 2 is tightened, the convex teeth and the concave teeth limit the contact surfaces, preventing them from sliding relative to each other and further improving the sealing strength.

[0031] As a preferred embodiment of this example, the fixed sealing device for leak testing of the water passage of MTU cylinder block further includes additional components, including a first O-ring rubber seal 6, an O-ring positioning ring 7, a second O-ring rubber seal 8, an internal hexagonal head screw 9, a pin 10, a second seal 11, and a handle 12.

[0032] In a preferred embodiment of this invention, the handle 12 is disposed on the surface of the first sealing member 1, and the internal hexagonal head screw 9 is used to fix the handle 12.

[0033] In a preferred embodiment of this invention, the first O-ring rubber seal 6, the O-ring positioning ring 7, and the second O-ring rubber seal 8 are used to fix the cylinder of the engine, and the pin 10 is used to fix the second seal 11 to prevent it from being driven by the movable fixing member 2.

[0034] Based on the aforementioned combination of implementation methods, the various devices of this application can replace existing leak testing equipment, and the multi-module lightweight design increases leak testing efficiency.

[0035] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A fixed sealing device for leak testing of MTU cylinder block water passages, characterized in that, include: A central seal, wherein the central seal is a cylindrical structure; The first sealing element is located at one end of the middle sealing element. The first sealing element has a disc-shaped structure. The size of the first sealing element is set to match the bottom surface size of the middle sealing element. A first through hole is opened at the center of the first sealing element. The second sealing element is located at the other end of the middle sealing element. The second sealing element has a disc-shaped structure, and its size is set to match the bottom surface size of the middle sealing element. A second through hole is opened at the center of the second sealing element. A movable fastener, one end of which is movably connected to the first through hole and the other end of which is movably connected to the second through hole.

2. The fixed sealing device for leak testing of MTU cylinder block water passages as described in claim 1, characterized in that, The inner wall of the second through hole is provided with threads, and the movable fixing member is a tension screw structure, including a head and a rod body. The surface shape of the rod body is matched with the threads on the inner wall of the second through hole.

3. A fixed sealing device for leak testing of MTU cylinder block water passages as described in claim 2, characterized in that, The head is larger than the diameter of the first through hole, the rod body moves inside the first through hole, and the head moves on the side of the first seal away from the central seal.

4. A fixed sealing device for leak testing of MTU cylinder block water passages as described in claim 1, characterized in that, The first seal includes: Cylinder head bolts, which are used to connect to the bolt holes in the engine cylinder head; An open-hole sealing gasket is located at a position corresponding to the cylinder head bolt and is disposed on the side of the first seal near the middle seal.

5. A fixed sealing device for leak testing of MTU cylinder block water passages as described in claim 1, characterized in that, The second seal includes convex teeth, and the central seal includes concave teeth. The convex surface of the convex teeth and the concave surface of the concave teeth are arranged opposite to each other and are shaped to fit each other.

6. A fixed sealing device for leak testing of MTU cylinder block water passages as described in claim 1, characterized in that, It also includes additional components, including a first O-ring, an O-ring positioning ring, a second O-ring, an internal hexagonal head screw, a pin, a second seal, and a handle.

7. A fixed sealing device for leak testing of MTU cylinder block water passages as described in claim 6, characterized in that, The handle is disposed on the surface of the first sealing element, and the internal hexagonal head screw is used to fix the handle.

8. A fixed sealing device for leak testing of MTU cylinder block water passages as described in claim 6, characterized in that, The first O-ring, the O-ring positioning ring, and the second O-ring are used to fix the cylinder of the engine, and the pin is used to fix the second seal to prevent it from being driven by the moving fixed part.

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