CN215910100U - Hydraulic support stand bottom valve pressure testing tool - Google Patents
Hydraulic support stand bottom valve pressure testing tool Download PDFInfo
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- CN215910100U CN215910100U CN202121458087.9U CN202121458087U CN215910100U CN 215910100 U CN215910100 U CN 215910100U CN 202121458087 U CN202121458087 U CN 202121458087U CN 215910100 U CN215910100 U CN 215910100U
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- bottom valve
- cylinder cover
- bearing sleeve
- mounting hole
- liquid inlet
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Abstract
The utility model relates to a pressure test tool for a hydraulic support upright post bottom valve, which comprises a pressure test cylinder sleeve and a bearing sleeve, wherein the pressure test cylinder sleeve comprises a cylinder cover and a straight joint arranged above the cylinder cover, the cylinder cover is of a hollow structure with a through lower end, a liquid inlet is formed in the cylinder cover, the bearing sleeve is in threaded connection with the cylinder cover, the bearing sleeve is of a hollow structure with a through upper part and a through lower part, and the straight joint, the liquid inlet and the bearing sleeve are correspondingly communicated with each other up and down; the cross section of the outer contour of the lower end of the bearing sleeve is prismatic, a stepped mounting hole is formed in the bearing sleeve, a bottom valve is detachably connected in the mounting hole, and the bottom valve is attached to the inner wall of the mounting hole; the liquid inlet and the bottom valve correspond to each other up and down, an interval is reserved between the bottom valve and the liquid inlet to form an oil cavity, and the oil cavity is located in the mounting hole. The hydraulic support column bottom valve adjusting device is simple in structure, can be conveniently disassembled and assembled with a bottom valve, improves the pressure testing efficiency, and is convenient for judging whether the set opening pressure of the hydraulic support column bottom valve meets the design requirement.
Description
Technical Field
The utility model relates to the technical field of mining hydraulic supports, in particular to a pressure test tool for a bottom valve of a vertical column of a hydraulic support.
Background
The hydraulic support can protect the personal safety of mining personnel to a great extent in the coal mining process, the coal mining has high requirements on the reliability and the stability of the hydraulic support, and a support manufacturer is required to reasonably design and produce the hydraulic support strictly according to design requirements. This requires that the components, including the foot valve, must be tightly closed to quality.
In the design process of the hydraulic support, different design requirements are made on the opening pressure of the bottom valve of the upright post according to different working conditions of a mine working face. In order to improve the working efficiency, reduce the labor cost and avoid the reworking of the stand columns in batch caused by the opening pressure error of the bottom valve, the opening pressure set by the bottom valve needs to be confirmed and rechecked before the stand columns are assembled.
During pressure testing operation, the pressure testing system is connected with the pressure testing tool through a pipeline, the bottom valve is installed in the pressure testing tool, hydraulic oil is pressed into the bottom valve through the pressure testing system, whether pressure of a pressure gauge conforms to design opening pressure when the bottom valve is opened or not is observed, and whether the opening pressure of the bottom valve reaches the design standard or not is judged.
Most of the existing pressure test tools are complex in structure, the bottom valve is inconvenient to assemble and disassemble, the assembling and disassembling process wastes time and labor, the structure of part of the pressure test tools is simplified, but the actual use is more complicated, if the pressure test device for opening the column bottom valve is disclosed by the authorization bulletin No. CN211504657U, the quick connector is communicated with the liquid inlet pipe during the test, the connector base needs to be detached firstly after the test, the liquid inlet pipe and the quick connector need to be separated firstly for the convenience of detaching the connector base, the operation is more complicated, when the pressure test of a large batch of bottom valves is performed, the liquid inlet pipe and the quick connector are frequently detached, the oil leakage at the joint of the two parts is extremely easy to occur, and the normal pressure test operation is influenced. Therefore, a hydraulic support column bottom valve pressure testing tool is provided.
Disclosure of Invention
The utility model aims to solve the problems that a pressure testing tool in the prior art is complex in structure and inconvenient to disassemble and assemble with a bottom valve, provides a pressure testing tool for a bottom valve of a hydraulic support stand column, and can be conveniently and rapidly installed with the bottom valve by simplifying the structure of the pressure testing tool and simultaneously improve the pressure testing efficiency.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the pressure testing tool for the hydraulic support upright post bottom valve comprises a pressure testing cylinder sleeve and a bearing sleeve, wherein the pressure testing cylinder sleeve comprises a cylinder cover and a straight joint arranged above the cylinder cover, the cylinder cover is of a hollow structure with a through lower end, a liquid inlet is formed in the cylinder cover, the bearing sleeve is in threaded connection with the cylinder cover, the bearing sleeve is of a hollow structure with a through upper part and a through lower part, and the straight joint, the liquid inlet and the bearing sleeve are correspondingly communicated with each other up and down;
the height of the bearing sleeve is greater than that of the cylinder cover, the cross section of the outer contour of the lower end of the bearing sleeve is prismatic to form a tightening section, a stepped mounting hole is formed in the bearing sleeve, a bottom valve is detachably connected in the mounting hole, and the bottom valve is attached to the inner wall of the mounting hole;
the liquid inlet and the bottom valve correspond to each other up and down, an interval is reserved between the bottom valve and the liquid inlet to form an oil cavity, and the oil cavity is located in the mounting hole.
Furthermore, the cylinder cover is of a hollow structure made of 27SiMn, the section of the cylinder cover is inverted U-shaped, and the outer profile of the cylinder cover is prismatic so as to be convenient for fixing; the liquid inlet is positioned in the middle above the cylinder cover.
Further, the straight joint is a tubular structure made of 20CrMo, the straight joint is welded in the middle above the barrel cover and communicated with the liquid inlet, and the inner diameter of the straight joint is larger than the aperture of the liquid inlet.
Furthermore, the lower end face of the bearing sleeve exceeds the lower end face of the cylinder cover, and a sealing ring is arranged between the joint faces of the bearing sleeve and the cylinder cover; the lower end of the bottom valve extends out of the mounting hole, and a sealing ring is also arranged between the bottom valve and the joint surface of the mounting hole.
Furthermore, the bearing sleeve comprises a closed section and a connecting section which are integrally formed, and the closed section and the connecting section are connected and combined up and down to form a ladder shape with a small top and a big bottom; the mounting hole penetrates through the sealing section and the connecting section, and the mounting hole is in a step shape with a large upper part and a small lower part.
Furthermore, the outer contour of the sealing section is a smooth surface, and the sealing ring is arranged between the sealing section and the joint surface of the cylinder cover; the outer contour of the connecting section is provided with threads, and the bearing sleeve is connected with the barrel cover through the connecting section.
Furthermore, a mounting shaft shoulder is formed at the step change position of the mounting hole, and the bottom valve is abutted against the mounting shaft shoulder; and the oil cavity is arranged in the mounting hole between the upper end of the bottom valve and the liquid inlet.
Through the technical scheme, the utility model has the beneficial effects that:
the pressure testing device is reasonable in structural design, the bearing sleeve is in threaded connection with the cylinder cover, and meanwhile, the lower end of the bearing sleeve is prismatic, so that the bearing sleeve can be well matched with a disassembling tool to screw or unscrew the bearing sleeve, the bearing sleeve and the cylinder cover are greatly convenient to disassemble and assemble, the operation is convenient and rapid, the bottom valve can be quickly assembled into or taken out of the bearing sleeve, and the pressure testing working efficiency is further improved.
The bottom valve can be disassembled and assembled only by screwing the bearing sleeve without frequently disassembling the pipeline, the disassembly is rapid, the leakage of oil can be prevented through the sealing rings at two different positions, the precision of the pressure test tool is enhanced, and the pressure test tool can be well applied to the test operation of the opening pressure of the bottom valve.
Drawings
Fig. 1 is a schematic overall structure diagram of a hydraulic support column bottom valve pressure testing tool of the utility model.
Fig. 2 is a schematic structural view of a pressure testing cylinder sleeve of the hydraulic support stand column bottom valve pressure testing tool.
Fig. 3 is a schematic structural view of a bearing sleeve of the hydraulic support upright column bottom valve pressure testing tool.
The reference numbers in the drawings are as follows: the device comprises a pressure test cylinder sleeve 1, a bearing sleeve 2, a sealing section 21, a connecting section 22, a cylinder cover 3, a straight joint 4, a liquid inlet 5, a mounting hole 6, a bottom valve 7, an oil cavity 8, a sealing ring 9, a tightening section 10 and a mounting shaft shoulder 11.
Detailed Description
The utility model is further described with reference to the following figures and detailed description:
as shown in fig. 1-3, hydraulic support stand bottom valve pressure testing tool, including pressure testing cylinder liner 1 and bearing cover 2, pressure testing cylinder liner 1 includes cover 3 and lays straight joint 4 in the cover 3 top, cover 3 is the hollow structure that the lower extreme link up, and is concrete, and cover 3 is the hollow structure that 27SiMn made, and 27SiMn has the machinable nature good, characteristics such as cold deformation plasticity and weldability are medium, also possesses fairly high intensity and wearability simultaneously, is applicable to this pressure testing operation scene.
In this embodiment, the section of the cylinder cover 3 is inverted U-shaped, a liquid inlet 5 is formed in the cylinder cover 3, and the liquid inlet 5 is located in the middle of the upper portion of the cylinder cover 3.
In order to fix the pressure test cylinder sleeve 1, the outer contour of the cylinder cover 3 is prism-shaped so as to be fixed, the outer contour of the cylinder cover 3 is prism-shaped, namely the outer contour is formed by a plurality of planes which are circumferentially and uniformly distributed, and compared with a cylindrical surface, the contact area between the cylinder cover and a fixing clamp can be increased by adopting the planes, so that friction can be increased, and effective fixation can be realized.
In the embodiment, the straight joint 4 is welded in the middle above the barrel cover 3, the straight joint 4 is of a tubular structure made of 20CrMo, the 20CrMo is high in weldability, good in machinability and cold strain plasticity, the straight joint 4 and the barrel cover 3 can be conveniently welded, meanwhile, the welding is firm and reliable, and the straight joint 4 made of 20CrMo is suitable for transmission of high-pressure hydraulic oil.
Before pressure test operation, the straight joint 4 is communicated with a pipeline, one end of the pipeline is connected with a pressure test system, the pipeline is a hydraulic pipe to meet the requirement of high-pressure oil liquid transmission, the straight joint 4 is a quick joint, the straight joint can be conveniently disassembled from the pipeline, and the operation and the use are flexible;
the straight joint 4 is communicated with the liquid inlet 5, and the inner diameter of the straight joint 4 is larger than the aperture of the liquid inlet 5.
In this embodiment, 3 threaded connection of cover 3 have bearing sleeve 2, bearing sleeve 2 are the hollow structure who link up from top to bottom, and the bearing sleeve 2 material is the same with the cover 3 material, is 27SiMn and makes, satisfies the high pressure test demand.
In this embodiment, the straight joint 4, the liquid inlet 5 and the bearing sleeve 2 are correspondingly communicated up and down.
The height of the bearing sleeve 2 is larger than that of the cylinder cover 3, namely after the bearing sleeve 2 is connected with the cylinder cover 3, the lower end face of the bearing sleeve 2 exceeds the lower end face of the cylinder cover 3, and the lower end of the bearing sleeve 2 protrudes out of the cylinder cover 3.
In order to facilitate the installation of the bearing sleeve 2, the outer profile section of the lower end of the bearing sleeve 2 is prismatic to form the screwing section 10, and then the side surface of the lower end of the bearing sleeve 2 is formed by a plurality of planes, so that the bearing sleeve can be conveniently matched with a disassembling tool, such as a pipe wrench and the like, relative to a cylindrical surface, the contact area between the disassembling tool and the bearing sleeve 2 is increased, and the bearing sleeve 2 and the cylinder cover 3 can be disassembled and assembled conveniently.
In this embodiment, the bearing sleeve 2 includes a sealing section 21 and a connecting section 22 which are integrally formed, the sealing section 21 and the connecting section 22 are connected and combined in a step shape with a small top and a large bottom, the outer contour of the sealing section 21 is a smooth surface, the outer contour of the connecting section 22 is provided with threads, and the bearing sleeve 2 is connected with the cylinder cover 3 through the connecting section 22.
In order to ensure the sealing of the mounting of the bearing sleeve 2 and the cylinder cover 3, a sealing ring 9 is arranged between the joint surfaces of the bearing sleeve 2 and the cylinder cover 3, and specifically, the sealing ring 9 is arranged between the sealing section 21 and the joint surface of the cylinder cover 3.
A stepped mounting hole 6 is formed in the bearing sleeve 2, the mounting hole 6 penetrates through the sealing section 21 and the connecting section 22, the mounting hole 6 is in a stepped shape with a large upper part and a small lower part, and a bottom valve 7 is detachably connected in the mounting hole 6.
Specifically, the step change position of the mounting hole 6 forms a mounting shaft shoulder 11, the bottom valve 7 abuts against the mounting shaft shoulder 11, the bottom valve 7 is attached to the inner wall of the mounting hole 6, and the lower end of the bottom valve 7 extends out of the mounting hole 6.
In order to ensure the sealing of the installation of the foot valve 7 and the support sleeve 2, a sealing ring 9 is also arranged between the joint surfaces of the foot valve 7 and the installation hole 6.
In this embodiment, the liquid inlet 5 and the bottom valve 7 correspond to each other vertically, an interval is formed between the bottom valve 7 and the liquid inlet 5 to form an oil cavity 8, and the oil cavity 8 is located in the mounting hole 6;
specifically, the oil cavity 8 is arranged in the mounting hole 6 between the upper end of the bottom valve 7 and the liquid inlet 5.
During pressure test operation, the pressure test tool is placed on a test bed, a bottom valve 7 to be tested is arranged in the mounting hole 6 of the bearing sleeve 2, and then the bearing sleeve 2 and the cylinder cover 3 are screwed and fixed; the hydraulic oil is slowly introduced into the pipeline by the pressure testing system and then sequentially enters the oil cavity 8 through the straight joint 4 and the liquid inlet 5, the oil cavity 8 is designed into a small-capacity cavity, oil contained in the small-capacity cavity is less, waste can be reduced, the oil in the oil cavity 8 is injected into the bottom valve 7, and the state of the bottom valve 7 is observed.
Once the bottom valve 7 is opened, the reading of the pressure gauge is read, the pressure gauge is compared with the designed opening pressure, whether the pressure of the bottom valve 7 meets the requirement is confirmed, after the pressure test is finished, the bearing sleeve 2 is unscrewed and taken down, and then the bottom valve 7 is taken out, so that the pressure test efficiency is improved.
This pressure testing instrument is used for detecting hydraulic support stand bottom valve 7 opening pressure to judge whether hydraulic support stand bottom valve 7 sets opening pressure and accords with the designing requirement, the practicality is strong.
The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.
Claims (7)
1. The pressure testing tool for the hydraulic support upright post bottom valve is characterized by comprising a pressure testing cylinder sleeve (1) and a bearing sleeve (2), wherein the pressure testing cylinder sleeve (1) comprises a cylinder cover (3) and a straight joint (4) arranged above the cylinder cover (3), the cylinder cover (3) is of a hollow structure with a through lower end, a liquid inlet (5) is formed in the cylinder cover (3), the bearing sleeve (2) is in internal thread connection with the cylinder cover (3), the bearing sleeve (2) is of a hollow structure with a through up and down structure, and the straight joint (4), the liquid inlet (5) and the bearing sleeve (2) are correspondingly communicated up and down;
the height of the bearing sleeve (2) is greater than that of the cylinder cover (3), the cross section of the outer contour of the lower end of the bearing sleeve (2) is prismatic to form a screwing section (10), a stepped mounting hole (6) is formed in the bearing sleeve (2), a bottom valve (7) is detachably connected in the mounting hole (6), and the bottom valve (7) is attached to the inner wall of the mounting hole (6);
the liquid inlet (5) and the bottom valve (7) correspond up and down, an interval exists between the bottom valve (7) and the liquid inlet (5) to form an oil cavity (8), and the oil cavity (8) is located in the mounting hole (6).
2. The pressure testing tool for the hydraulic support stand column bottom valve is characterized in that the cylinder cover (3) is of a hollow structure made of 27SiMn, the section of the cylinder cover (3) is inverted U-shaped, and the outer profile of the cylinder cover (3) is prismatic so as to be fixed;
the liquid inlet (5) is positioned in the middle of the upper part of the cylinder cover (3).
3. The hydraulic support column bottom valve pressure test tool according to claim 2, wherein the straight joint (4) is a tubular structure made of 20CrMo, the straight joint (4) is welded in the middle above the cylinder cover (3), the straight joint (4) is communicated with the liquid inlet (5), and the inner diameter of the straight joint (4) is larger than the aperture of the liquid inlet (5).
4. The hydraulic support column bottom valve pressure testing tool according to claim 1, characterized in that the lower end surface of the bearing sleeve (2) exceeds the lower end surface of the cylinder cover (3), and a sealing ring (9) is arranged between the joint surfaces of the bearing sleeve (2) and the cylinder cover (3);
the lower end of the bottom valve (7) extends out of the mounting hole (6), and a sealing ring (9) is also arranged between the joint surfaces of the bottom valve (7) and the mounting hole (6).
5. The hydraulic support stand bottom valve pressure testing tool is characterized in that the bearing sleeve (2) comprises a sealing section (21) and a connecting section (22) which are integrally formed, and the sealing section (21) and the connecting section (22) are connected and combined in a step shape with a small upper part and a big lower part;
the mounting hole (6) penetrates through the sealing section (21) and the connecting section (22), and the mounting hole (6) is in a step shape with a large upper part and a small lower part.
6. The hydraulic support column bottom valve pressure testing tool according to claim 5, characterized in that the outer contour of the sealing section (21) is smooth, and the sealing ring (9) is arranged between the joint surfaces of the sealing section (21) and the cylinder cover (3);
the outer contour of the connecting section (22) is provided with threads, and the bearing sleeve (2) is connected with the cylinder cover (3) through the connecting section (22).
7. The hydraulic support column bottom valve pressure test tool as claimed in claim 1, wherein the step change part of the mounting hole (6) forms a mounting shaft shoulder (11), and the bottom valve (7) abuts against the mounting shaft shoulder (11);
the oil cavity (8) is distributed in the mounting hole (6) between the upper end of the bottom valve (7) and the liquid inlet (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121458087.9U CN215910100U (en) | 2021-06-29 | 2021-06-29 | Hydraulic support stand bottom valve pressure testing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121458087.9U CN215910100U (en) | 2021-06-29 | 2021-06-29 | Hydraulic support stand bottom valve pressure testing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215910100U true CN215910100U (en) | 2022-02-25 |
Family
ID=80288620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121458087.9U Active CN215910100U (en) | 2021-06-29 | 2021-06-29 | Hydraulic support stand bottom valve pressure testing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215910100U (en) |
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2021
- 2021-06-29 CN CN202121458087.9U patent/CN215910100U/en active Active
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