Hydraulic test equipment for cylinder sleeve of diesel engine

Abstract

The utility model provides hydraulic test equipment for a diesel engine cylinder sleeve, and belongs to the field of test equipment. Comprising a support frame, a top plate and a bottom plate, the supporting sleeve is arranged in the mounting through groove and detachably connected with the mounting through groove, and a first sealing ring is mounted on the inner side of the supporting sleeve and used for mounting the air cylinder sleeve in a matched mode; the test sleeve is integrally connected to the bottom side of the top plate, a water inlet pipe and a water outlet pipe are mounted on the top side, an annular stop block is mounted on the inner side of the test sleeve, and a second sealing ring is mounted on the inner side of the annular stop block; the pressing plate is arranged on the top side of the top plate, fixedly connected with the top plate through a pressing bolt and used for fixing the air cylinder sleeve. The diesel engine cylinder sleeve is supported on the supporting sleeve for a hydrostatic test, whether the cylinder sleeve leaks water or not can be judged only by filling the test sleeve and the diesel engine cylinder with water and observing the reading change of the shock-proof pressure gauge during the test, meanwhile, the supporting sleeve and the annular stop block can be replaced, the cylinder sleeves of different sizes can be tested, and the applicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cylinder liner testing devices, and in particular to a diesel engine cylinder liner water pressure testing device. Background Technology

[0002] The cylinder head, cylinder liner, and piston of a marine diesel engine form the combustion chamber, where diesel fuel is compressed, exploded, and burned to provide power to the ship. The temperature at this location can reach 2000℃. To ensure the normal operation of the cylinder liner, according to CB / T3904-1999 "Technical Conditions for Centrifugally Cast Iron Cylinder Liners for Medium and High Power Diesel Engines" and CB / T702-1992 "Technical Conditions for Cast Iron Cylinder Liners for Marine Diesel Engines," marine cylinder liner castings should not leak after machining and undergo a specified hydrostatic test. Current technology involves sealing the upper and lower ends of the cylinder liner, then adding water and pressurizing it for a hydrostatic test.

[0003] Patent No. 201821732789.X discloses a hydraulic testing fixture for diesel engine cylinder liners, comprising a support frame, a support sleeve, and a pressure plate. The support sleeve is supported on the top plate of the support frame. A water inlet connector is provided on one side of the support sleeve, and a water outlet connector is provided on the other side. The top shoulder of the cylinder liner is supported on the inner step of the support sleeve. A sealing ring is provided between the top shoulder and the lower flange of the shoulder and the inner wall of the support sleeve. An annular cooling area between the top shoulder and the lower flange of the shoulder forms an annular sealing cavity with the inner wall of the support sleeve. The water inlet connector and the water outlet connector communicate with the annular sealing cavity respectively. The pressure plate is pressed onto the top of the cylinder liner, and the two sides of the pressure plate are fixedly connected to the two sides of the support sleeve respectively.

[0004] In the above-mentioned technology, the sealing ring is set between the top shoulder and the lower flange of the shoulder and the inner wall of the support sleeve. However, ordinary cylinder liners do not have a lower flange of the shoulder or have a lower flange of the shoulder but no sealing ring, which makes the test fixture not universal and not widely applicable. Utility Model Content

[0005] To address the above problems, this utility model provides a diesel engine cylinder liner water pressure testing device.

[0006] A diesel engine cylinder liner hydrostatic testing device includes: a support frame comprising a top plate, a bracket, and a bottom plate connected sequentially from top to bottom, with an installation slot formed on the top plate; a support sleeve disposed within the installation slot and detachably connected to it, with a first sealing ring installed on its inner side for fitting and installing the cylinder liner; a test sleeve integrally connected to the bottom side of the top plate, with an inlet pipe and an outlet pipe installed on its top side, an annular stop block installed on its inner side, and a second sealing ring installed on its inner side; and a pressure plate disposed on the top side of the top plate and fixedly connected to it by clamping bolts for fixing the cylinder liner.

[0007] In a preferred embodiment, the diesel engine cylinder liner hydrostatic testing equipment further includes a third sealing ring, which is disposed inside the support sleeve and on the side in contact with the mounting groove.

[0008] In a preferred embodiment, the mounting groove and the support sleeve are connected by a stepped structure.

[0009] In a preferred embodiment, the diesel engine cylinder liner hydrostatic testing equipment further includes: a slide groove, which is formed inside the test sleeve; an annular stop block is slidably connected to the slide groove and fixed to the test sleeve by fixing bolts; and a mounting hole, which is matched and connected by a plug and fixing bolts.

[0010] In a preferred embodiment, the bracket is made of angle steel fixed together to form a square frame structure.

[0011] In a preferred embodiment, the inlet pipe is positioned lower than the outlet pipe.

[0012] This application demonstrates a method for conducting a hydrostatic test on a diesel engine cylinder liner supported on a support sleeve. During the test, the test sleeve and the inside of the diesel engine cylinder are filled with water, and the change in the reading of the shock-resistant pressure gauge is observed to determine whether the cylinder liner is leaking. At the same time, the position of the annular stop block can be adjusted to determine the specific water seepage point. Furthermore, by replacing the support sleeve and the annular stop block, tests can be conducted on diesel engine cylinders of different models and sizes, thereby improving the universal applicability of the device. Attached Figure Description

[0013] Other features and advantages of the present invention will become clear from the following description of exemplary embodiments, which is incorporated in and constitutes a part of this specification. The accompanying drawings, which illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0014] Figure 1 Structural diagram of the diesel engine cylinder liner hydrostatic testing equipment of this utility model;

[0015] Figure 2 A cross-sectional view of the diesel engine cylinder liner hydrostatic testing equipment of this utility model, in state 1;

[0016] Figure 3 A cross-sectional view of the diesel engine cylinder liner hydrostatic testing equipment of this utility model, in state 2;

[0017] Figure 4 Enlarged view of position A of the diesel engine cylinder liner hydrostatic testing equipment of this utility model.

[0018] In the diagram: 10. Support frame; 11. Top plate; 12. Bracket; 13. Bottom plate; 111. Mounting slot; 20. Support sleeve; 21. First sealing ring; 100. Cylinder liner; 30. Test sleeve; 31. Inlet pipe; 32. Outlet pipe; 33. Annular stop block; 34. Second sealing ring; 40. Pressure plate; 41. Tightening bolt; 22. Third sealing ring; 50. Slide groove; 51. Fixing bolt; 52. Mounting hole; 53. Plug. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0020] The diesel engine cylinder liner water pressure testing equipment will be described in detail below with reference to the accompanying drawings and embodiments. Example

[0021] A diesel engine cylinder liner hydrostatic testing device includes: a support frame 10, comprising a top plate 11, a bracket 12, and a bottom plate 13 connected sequentially from top to bottom, with an installation groove 111 formed on the top plate 11; a support sleeve 20, disposed within the installation groove 111 and detachably connected to the installation groove 111, with a first sealing ring 21 installed on the inner side of the support sleeve 20 for matching and installing a cylinder liner 100; a test sleeve 30, integrally connected to the bottom side of the top plate 11, with an inlet pipe 31 and an outlet pipe 32 installed on the top side, an annular stop block 33 installed on the inner side of the test sleeve 30, and a second sealing ring 34 installed on the inner side of the annular stop block 33; and a pressure plate 40, disposed on the top side of the top plate 11 and fixedly connected to the top plate 11 by a clamping bolt 41 for fixing the cylinder liner 100.

[0022] During the test, according to the cylinder liner 100 model, prepare the corresponding support sleeve 20 and support frame 10. Place the cylinder liner 100 on the top side of the support frame 10 and align it with the mounting slot 111 for matching installation, so that the flange surface of the cylinder liner 100 contacts the top side plane of the support sleeve 20. Fix the pressure plate 40 to the top side of the cylinder liner 100 with the clamping bolt 41. Inject water into the gap between the test sleeve 30 and the cylinder liner 100 through the water inlet pipe 31 and observe the water flow in the water outlet pipe 32. When water flows out of the water outlet pipe 32, it means that the gap between the test sleeve 30 and the cylinder liner 100 is full of water. At this time, close the water outlet pipe 32 and continue to inject water. When the reading of the shock-resistant pressure gauge on the water inlet pipe 31 reaches the pressure value required by the process, close the water inlet pipe 31 to maintain pressure. Within the time required by the process, read the shock-resistant pressure gauge. If the reading of the shock-resistant pressure gauge does not change, it means that the cylinder liner 100 does not leak water.

[0023] Among them, the bracket 12 is made of angle steel to form a square frame structure.

[0024] The inlet pipe 31 is positioned lower than the outlet pipe 32. Example

[0025] Example 2 is an improvement on Example 1. The improvement includes: the diesel engine cylinder liner hydrostatic testing equipment further includes: a third sealing ring 22, which is disposed inside the support sleeve 20 and is disposed on the side in contact with the mounting through groove 111.

[0026] By adding a third sealing ring 22, the sealing performance of the device is improved, and the accuracy of the device test is increased.

[0027] The mounting groove 111 and the support sleeve 20 are connected by a stepped structure. The stepped structure improves the sealing performance of the device and enhances the accuracy of the device test. Example

[0028] Example 3 is an improvement upon Example 1. Because existing testing equipment requires water injection into the gap between the test sleeve 30 and the cylinder liner 100, it cannot accurately determine which part of the cylinder liner 100 is leaking, which is detrimental to subsequent improvements. To address the above problems, Example 3 is improved as follows:

[0029] The diesel engine cylinder liner hydrostatic testing equipment also includes: a slide groove 50, which is opened inside the test sleeve 30; an annular stop block 33 is slidably connected to the slide groove 50 and fixed to the test sleeve 30 by a fixing bolt 51; and a mounting hole 52 is matched and connected by a plug 53 and a fixing bolt 51.

[0030] During operation, the position of the annular stop block 33 is adjusted via the slide groove 50, and then fixed to the annular stop block 33 by the fixing bolt 51 passing through the mounting hole 52. The remaining mounting holes 52 are sealed by the plug 53. The cylinder liner 100 is tested sequentially from top to bottom. When the reading of the shock-resistant pressure gauge changes at a certain part, it indicates that the cylinder liner 100 is leaking water in that part.

[0031] The test sleeve 30 can be divided into 4 areas from top to bottom, and 4 tests are conducted.

[0032] The device's versatility can be improved by replacing the support sleeve 20 and the annular stop block 33 to conduct tests on cylinder liners 100 of different sizes and models.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes that element.

[0034] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. The utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A diesel engine cylinder liner hydrostatic testing device, characterized in that, Include: Support frame (10), including top plate (11), support (12), bottom plate (13) connected in turn from top to bottom, and mounting slot (111) is set on the top plate (11); Support sleeve (20) is arranged in the mounting slot (111), and the mounting slot (111) is detachably connected with the mounting slot (111), and the first sealing ring (21) is mounted in the support sleeve (20), which is used for matching installation cylinder sleeve (100); Test sleeve (30) is integrally connected to the bottom side of the top plate (11), and the water inlet pipe (31) and the water outlet pipe (32) are installed on the top side, the annular stop block (33) is installed in the test sleeve (30), and the second sealing ring (34) is installed in the annular stop block (33); Pressing plate (40) is arranged on the top side of the top plate (11), and is fixedly connected with the top plate (11) through pressing bolt (41), which is used for fixing cylinder sleeve (100).

2. The water pressure testing apparatus for a diesel engine cylinder liner according to claim 1, characterized by The diesel engine cylinder sleeve hydrostatic test equipment further comprises: Third sealing ring (22) is arranged in the support sleeve (20), and is arranged on the side in contact with the mounting slot (111).

3. The water testing apparatus for a cylinder liner of a diesel engine according to claim 1, characterized by The mounting slot (111) and the support sleeve (20) are connected in step structure.

4. The water pressure testing apparatus for a cylinder liner of a diesel engine according to claim 1, characterized by The diesel engine cylinder sleeve hydrostatic test equipment further comprises: Slide groove (50) is set in the inside of the test sleeve (30), the annular stop block (33) is slidably connected with the slide groove (50), and is fixed with the test sleeve (30) through the fixing bolt (51).

5. The water testing apparatus for a cylinder liner of a diesel engine according to claim 4, characterized by The diesel engine cylinder sleeve hydrostatic test equipment further comprises: Mounting hole (52), the mounting hole (52) is matched and connected through the plug (53) and the fixing bolt (51).

6. The water testing apparatus for a cylinder liner of a diesel engine according to claim 1, characterized by The support (12) is made of angle steel and is fixed into a square frame structure.

7. The water testing apparatus for a cylinder liner of a diesel engine according to claim 1, characterized by The position of the water inlet pipe (31) is lower than that of the water outlet pipe (32).

Images