CN109708553B - Hydraulic test device capable of accurately measuring valve opening point - Google Patents
Hydraulic test device capable of accurately measuring valve opening point Download PDFInfo
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- CN109708553B CN109708553B CN201811368499.6A CN201811368499A CN109708553B CN 109708553 B CN109708553 B CN 109708553B CN 201811368499 A CN201811368499 A CN 201811368499A CN 109708553 B CN109708553 B CN 109708553B
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Abstract
The invention belongs to the technical field of hydraulic tests, and relates to a hydraulic test device capable of accurately measuring the opening point of a valve, which comprises a valve movement measuring device and a dial indicator, wherein the valve movement measuring device comprises a plug, a measuring head with threads, a bushing and an ejector pin; the measuring head with the thread, the bush and the thimble are sequentially sleeved together from outside to inside and are coaxial; the plug is arranged at the end part of the measuring head with the thread and is contacted with the bush; the end part of the bushing and the end part of the thimble are respectively contacted with the valve to be detected; the dial indicator penetrates through the plug along the axial direction of the plug and is in contact with the thimble; the measuring head with the threads drives the valve to be measured to move through the plug and the bushing; when the valve to be tested moves, the valve to be tested triggers the dial indicator through the thimble. The invention provides the hydraulic test device which can reduce personal errors, reduce the part processing difficulty and effectively ensure the hydraulic test quality and can accurately measure the valve opening point.
Description
Technical Field
The invention belongs to the technical field of hydraulic tests, relates to a hydraulic test device capable of accurately measuring the opening point of a valve, and particularly relates to a hydraulic test device capable of accurately measuring the opening point of the valve, which is mainly used for precision matching parts of fuel control accessories of an aircraft engine.
Background
The special tool for the hydraulic test of the precision matching parts pushes the valve and the measuring gauge outfit to move through the measuring head with threads. The test first requires finding the opening point of the shutter in the assembly. During the test, the valve moves to the relative position, and the pressure value and the measured flow rate detected by the outlet pressure gauge are observed and recorded. And after the test is finished, comparing the recorded value with the design value to judge whether the design requirement is met. At present, the movement of the valve and the measuring gauge head is realized by an integrated valve movement measuring device through thread transmission. The integrated valve movement measuring device judges whether the valve opening point is searched by personal experience and hand feeling of an operator. The found starting point is usually an unreal and unreliable starting point, so that the test result of the component is greatly influenced and serious defects exist.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides the hydraulic test device which can reduce human errors, reduce the part processing difficulty and effectively ensure the hydraulic test quality and can accurately measure the opening point of the valve.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a but hydraulic test device of accurate measurement valve opening point, includes valve removal measuring device and percentage table, its characterized in that: the valve movement measuring device comprises a plug, a measuring head with threads, a bushing and a thimble; the measuring head with the threads, the bushing and the thimble are sequentially sleeved together from outside to inside and are coaxial; the plug is arranged at the end part of the measuring head with the thread and is in contact with the bushing; the end part of the bushing and the end part of the thimble are respectively contacted with the valve to be tested; the dial indicator penetrates through the plug along the axial direction of the plug and is in contact with the thimble; the measuring head with the threads drives the valve to be measured to move through the plug and the bushing; when the valve to be tested moves, the valve to be tested triggers the dial indicator through the thimble.
An axial through hole is formed in the measuring head with the threads along the axial direction of the side head; the whole bushing is T-shaped; the bushing extends into the axial through hole from one end of the axial through hole and can freely move in the axial through hole; the plug is stopped against the end face of the bushing and drives the valve to be tested to move through the bushing.
The axial through hole is a stepped hole; and the plug is arranged in the step hole and is connected with the measuring head thread with the thread.
The bushing is provided with an axial through hole along the axial direction of the bushing; the thimble is integrally T-shaped; the thimble extends into the axial through hole of the bush from the axial through hole and can freely move in the axial through hole; and the dial indicator penetrates through the plug along the axial direction of the plug and is in contact with the end face of the thimble.
An axial stepped hole is formed in the axial direction of the plug; the T-shaped end part of the thimble extends into the axial stepped hole of the plug; and the dial indicator extends into the axial stepped hole of the plug from the other end of the axial stepped hole of the plug and abuts against the end face of the thimble.
The outer wall of the measuring head with the threads is provided with threads.
The invention has the advantages that:
the invention provides a hydraulic test device capable of accurately measuring the opening point of a valve, which comprises a valve movement measuring device and a dial indicator, wherein the valve movement measuring device comprises a plug, a measuring head with threads, a bushing and a thimble; the measuring head with the thread, the bush and the thimble are sequentially sleeved together from outside to inside and are coaxial; the plug is arranged at the end part of the measuring head with the thread and is contacted with the bush; the end part of the bushing and the end part of the thimble are respectively contacted with the valve to be detected; the dial indicator penetrates through the plug along the axial direction of the plug and is in contact with the thimble; the measuring head with the threads drives the valve to be measured to move through the plug and the bushing; when the valve to be tested moves, the valve to be tested triggers the dial indicator through the thimble. The dial indicator head is always contacted with the valve through the thimble. When the threaded side head is moved leftwards, the threaded side head drives the bushing to push the valve to move leftwards through the plug, the valve drives the thimble to move leftwards, and the variable quantity displayed by the dial indicator is the actual displacement quantity of the valve. And the real-time flow is measured at different positions, so that the validity and authenticity of test data are ensured, and the hydraulic test quality is ensured. The hydraulic test device capable of accurately measuring the opening point of the valve is simple to install, and after the hydraulic test device is installed in the clamp body, a plug, a side head with threads, a bushing and a thimble are not required to be installed in each test; a mistake-proofing T-shaped structure is designed, so that the thimble cannot fall out of the clamp; threaded connection, transmission measurement need measuring device not overall structure, can reduce the high processing degree of difficulty that arouses of axiality like this, and assembly structure can reduce the processing degree of difficulty of each part, can effectively reduce human error, reduce the part processing degree of difficulty and can effectively ensure hydraulic test quality.
Drawings
FIG. 1 is a schematic diagram of the structure of a test device provided by the present invention;
FIG. 2 is a schematic structural view of a main clamp body employed in the present invention;
FIG. 3 is a schematic view of the structure of a shutter movement measuring device used in the present invention;
FIG. 4 is a schematic diagram of the structure of a dial indicator used in the present invention;
wherein:
1-dial indicator; 2-dial indicator support; 3-plug; 4-a threaded probe; 5-a bushing; 6-a thimble; 7-main clamp body; 8, installing a valve into the bushing; 9-a valve; 10-a spring; 11-O type sealing ring; 14-rear plug; 15-a retainer ring; 16-sealing rubber ring; 17-set screw.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a hydraulic test apparatus capable of accurately measuring an opening point of a valve, which comprises a valve movement measuring apparatus and a dial indicator 1, as in the prior art, but is different from the prior art in that the valve movement measuring apparatus provided by the present invention is a split structure, and comprises a plug 3, a measuring head 4 with threads, a bushing 5 and a thimble 6; the measuring head 4 with the thread, the bush 5 and the thimble 6 are sequentially sheathed together from outside to inside and are coaxial; the plug 3 is arranged at the end part of the measuring head 4 with the thread and is contacted with the bush 5; the end part of the lining 5 and the end part of the thimble 6 are respectively contacted with the valve 9 to be tested; the dial indicator 1 penetrates through the plug 3 along the axial direction of the plug 3 and is in contact with the thimble 6; the measuring head 4 with the threads drives the valve to be measured 9 to move through the plug 3 and the bush 5; when the valve 9 to be tested moves, the valve 9 to be tested triggers the dial indicator 1 through the thimble 6.
Wherein, an axial through hole is arranged on the measuring head 4 with the thread along the axial direction of the side head; the whole bushing 5 is T-shaped; the bush 5 is arranged in the axial through hole of the measuring head 4 with the thread and can freely move in the axial through hole; the plug 3 is stopped against the end face of the bush 5 and drives the valve 9 to be tested to move through the bush 5.
The axial through hole is a step hole; the plug 3 is arranged in the step hole and is in threaded connection with the measuring head 4 with threads.
The bush 5 is provided with an axial through hole along the axial direction of the bush; the thimble 6 is integrally T-shaped; the thimble 6 is arranged in the axial through hole of the bush 5 and can freely move in the axial through hole; the dial indicator 1 penetrates through the plug 3 along the axial direction of the plug 3 and is in contact with the end face of the thimble 6.
An axial stepped hole is formed in the axial direction of the plug 3; the T-shaped end part of the thimble 6 extends into the axial stepped hole of the plug 3; the dial indicator 1 extends into the axial stepped hole of the plug 3 from the other end of the axial stepped hole of the plug 3 and is stopped against the end face of the thimble 6.
The outer wall of the measuring head 4 with the threads is provided with the threads.
When the measuring head is used specifically, the bushing 5 and the ejector pin 6 are arranged in the measuring head 4 with the threads, the plug 3 is screwed into the side head 4 with the threads, the plug 3 is connected with the side head 4 with the threads through the threads, and the plug 3, the side head 4 with the threads, the bushing 5 and the ejector pin 6 are combined into a whole; screwing the threaded side head 4 into the main clamp body 7, and arranging the dial indicator 1 on the main clamp body 7 through the dial indicator support frame 2; the threaded side head 4 is connected with the main clamp body 7 through threads; the O-shaped sealing ring 11 (3) is arranged in a rubber ring groove of the valve installing bush 8, the valve installing bush 8 is arranged in the main clamp body 7, and the valve installing bush 8 and the main clamp body 7 are tightly pressed through a fixing screw 17. The valve 9 to be tested is arranged in an axial valve mounting hole of the valve mounting bush 8, a spring 10, a rear plug 14 and a retainer ring 15 are arranged, and a sealing rubber ring 16 is arranged between the rear plug 14 and the valve mounting bush 8. The shutter 9 is pushed to the right side by the elastic force of the spring 10. And (3) installing the dial indicator 1, enabling the compression value of the dial indicator 1 to be more than or equal to 1.5mm, and locking the dial indicator 1.
The adjusting process of the invention is as follows: the threaded side head 4 is moved rightwards, if the pointer of the dial indicator 1 is not moved, the conical surface of the valve 9 and the end surface of the valve installing bush 8 are closed (the gap H is equal to 0), and the dial indicator 1 is adjusted to zero; if the threaded side head 4 is moved rightwards, the pointer of the dial indicator rotates, the threaded side head 4 continues to be moved rightwards until the pointer of the dial indicator 1 stops rotating, at the moment, the valve conical surface and the end face of the bushing are closed (the gap H is equal to 0), the valve conical surface and the end face of the bushing are in a closed state, and the dial indicator is zeroed;
in the specific test of the invention: the assembly is carried out according to figure 1. The head of the dial indicator 1 is always contacted with the valve 9 through the thimble 6. When the threaded side head 4 is moved leftwards, the threaded side head 4 drives the bushing 5 through the plug 3 to push the valve 9 to move leftwards, the valve 9 drives the thimble 6 to move leftwards, and the variation displayed by the dial indicator is the actual displacement of the valve. And the real-time flow is measured at different positions, so that the validity and authenticity of test data are ensured, and the hydraulic test quality is ensured.
The hydraulic test measuring device is simple to install, and after the hydraulic test measuring device is installed in a clamp body, a plug 3, a threaded side head 4, a bushing 5 and a thimble 6 are not required to be installed in each test; a mistake-proofing T-shaped structure is designed, so that the thimble 6 cannot fall out of the clamp; threaded connection and transmission measurement need measuring device not overall structure, can reduce the processing degree of difficulty that the axiality is high to cause like this, and the assembly structure can reduce the processing degree of difficulty of each part.
Claims (5)
1. The utility model provides a but hydraulic test device of accurate measurement valve opening point, includes valve removal measuring device and percentage table (1), its characterized in that: the valve movement measuring device comprises a plug (3), a measuring head (4) with threads, a bushing (5) and an ejector pin (6); the measuring head (4) with the threads, the bushing (5) and the thimble (6) are sequentially sleeved together from outside to inside and are coaxial; the plug (3) is arranged at the end part of the measuring head (4) with the thread and is in contact with the bushing (5); the end part of the bushing (5) and the end part of the thimble (6) are respectively contacted with the valve (9) to be tested; the dial indicator (1) penetrates through the plug (3) along the axial direction of the plug (3) and is in contact with the thimble (6); the measuring head (4) with the threads drives the valve (9) to be measured to move through the plug (3) and the bushing (5); when the valve (9) to be tested moves, the valve (9) to be tested triggers the dial indicator (1) through the thimble (6); an axial through hole is formed in the measuring head (4) with the threads along the axial direction of the side head; the whole bushing (5) is T-shaped; the bush (5) extends into the axial through hole from one end of the axial through hole and can freely move in the axial through hole; the plug (3) is stopped against the end face of the bushing (5) and drives the valve (9) to be tested to move through the bushing (5).
2. The hydraulic test device capable of accurately measuring the opening point of the valve according to claim 1, wherein: the axial through hole is a stepped hole; the plug (3) is arranged in the step hole and is in threaded connection with the measuring head (4) with threads.
3. The hydraulic test device capable of accurately measuring the opening point of the valve according to claim 2, wherein: the bushing (5) is provided with an axial through hole along the axial direction of the bushing; the thimble (6) is integrally T-shaped; the thimble (6) extends into the axial through hole of the bush (5) from the axial through hole and can freely move in the axial through hole; the dial indicator (1) penetrates through the plug (3) along the axial direction of the plug (3) and is in contact with the end face of the thimble (6).
4. The hydraulic test device capable of accurately measuring the opening point of the valve according to claim 3, wherein: an axial stepped hole is formed in the axial direction of the plug (3); the T-shaped end part of the thimble (6) extends into the axial stepped hole of the plug (3); the dial indicator (1) extends into the axial stepped hole of the plug (3) from the other end of the axial stepped hole of the plug (3) and is stopped against the end face of the thimble (6).
5. The hydraulic test device capable of accurately measuring the valve opening point according to claim 1, 2, 3 or 4, wherein: and the outer wall of the measuring head (4) with the threads is provided with the threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368499.6A CN109708553B (en) | 2018-11-16 | 2018-11-16 | Hydraulic test device capable of accurately measuring valve opening point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368499.6A CN109708553B (en) | 2018-11-16 | 2018-11-16 | Hydraulic test device capable of accurately measuring valve opening point |
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| Publication Number | Publication Date |
|---|---|
| CN109708553A CN109708553A (en) | 2019-05-03 |
| CN109708553B true CN109708553B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811368499.6A Active CN109708553B (en) | 2018-11-16 | 2018-11-16 | Hydraulic test device capable of accurately measuring valve opening point |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02271235A (en) * | 1989-04-13 | 1990-11-06 | Daiichi Valve Eng Kk | Method of testing operation of safety valve |
| CN103438782A (en) * | 2013-09-02 | 2013-12-11 | 中国人民解放军第五七二一工厂 | Solenoid valve working stroke detection device |
| CN106153318A (en) * | 2016-06-28 | 2016-11-23 | 西安航空动力控制科技有限公司 | Precise bushing valve couple performance test measurement apparatus |
| CN207751686U (en) * | 2018-01-31 | 2018-08-21 | 中国航发动力股份有限公司 | A kind of solenoid valve detection device |
-
2018
- 2018-11-16 CN CN201811368499.6A patent/CN109708553B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02271235A (en) * | 1989-04-13 | 1990-11-06 | Daiichi Valve Eng Kk | Method of testing operation of safety valve |
| CN103438782A (en) * | 2013-09-02 | 2013-12-11 | 中国人民解放军第五七二一工厂 | Solenoid valve working stroke detection device |
| CN106153318A (en) * | 2016-06-28 | 2016-11-23 | 西安航空动力控制科技有限公司 | Precise bushing valve couple performance test measurement apparatus |
| CN207751686U (en) * | 2018-01-31 | 2018-08-21 | 中国航发动力股份有限公司 | A kind of solenoid valve detection device |
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| CN109708553A (en) | 2019-05-03 |
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