CN103398045A - Pneumatic flow measuring device of electro-hydraulic servo valve with sliding valve-controlled throttling window coverage - Google Patents
Pneumatic flow measuring device of electro-hydraulic servo valve with sliding valve-controlled throttling window coverage Download PDFInfo
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- CN103398045A CN103398045A CN2013103524235A CN201310352423A CN103398045A CN 103398045 A CN103398045 A CN 103398045A CN 2013103524235 A CN2013103524235 A CN 2013103524235A CN 201310352423 A CN201310352423 A CN 201310352423A CN 103398045 A CN103398045 A CN 103398045A
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Abstract
The invention relates to a pneumatic flow measuring device of an electro-hydraulic servo valve with sliding valve-controlled throttling window coverage. The pneumatic flow measuring device comprises a float-type pneumatic measuring instrument, a measuring rack capable of driving a process housing to move slightly, an optical meter, the process housing mounted with a sliding valve pair, and a micro-motion screw-type propeller, wherein the optical meter and the micro-motion screw-type propeller are mounted on two sides of the measuring rack respectively; a measuring interface is arranged on the process housing and is connected with the float-type pneumatic measuring instrument. The pneumatic flow measuring device has the advantages that the actual flow variation of the working state of the electro-hydraulic servo valve can be simulated; the measuring data are stable; the measuring accuracy is high; the operation and the use are simple; the mastering is easy; the universality is high; the assembly and the disassembly are convenient; demand on workers' skill and labor intensity requirements are lower; the product quality is stable; the production cost is reduced.
Description
Technical field
Relate to a kind of electrohydraulic control in invention, especially a kind of pneumatic flowrate measuring device of overlay capacity of guiding valve sub-control throttling window of electrohydraulic control.
Background technique
The flow measuring device of the overlay capacity of the guiding valve sub-control throttling window of existing electrohydraulic control, analog electrical hydraulic servo working state actual flow situation of change that can not be correct, survey data is unstable, and measuring accuracy is poor, operation inconvenience, required craftsmanship and labor intensity are higher.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of electrohydraulic control and controls the pneumatic flowrate measuring device of throttling window overlay capacity, poor to solve the measuring accuracy that exists in prior art, require the craftsmanship high, long processing time, quality is unstable, the defects such as cost of production height.
for achieving the above object, technological scheme of the present invention is: a kind of electrohydraulic control guiding valve is controlled the pneumatic flowrate measuring device of throttling window overlay capacity, comprise floating type air gauge, can drive the mobile measuring frame of process shell trace, the optics meter, the process shell of guiding valve pair is installed, fine motion screw type propulsion device, its characteristic point is: the process shell of adjustable connection guiding valve pair in the middle of can driving above the mobile measuring frame of process shell trace, both sides are separately installed with optics meter and fine motion screw type propulsion device, the process shell that the guiding valve pair is installed is provided with measurement interface, measurement interface connects mark formula air gauge.
The middle installation endoporus that is provided with of process shell of guiding valve pair is installed, and the center of installation endoporus and the distance that can drive between the mobile measuring frame table top of process shell trace are certain value.
During measurement, the spool of packing in the process shell of installation guiding valve pair, the spool two ends are connected and are connected with the optical instrumentation head with fine motion screw type propulsion device respectively, the optics meter, spool and fine motion worm propeller headtotail are connected.
Can drive between process shell the trace measuring frame that moves and the process shell that the guiding valve pair is installed and be connected by micro-mobile mechanism.
Beneficial effect of the present invention:
Energy analog electrical hydraulic servo working state actual flow situation of change of the present invention, survey data is stable, and measuring accuracy is high, and operation is used simple, easily grasp, highly versatile, the mounting or dismounting assembly is convenient, craftsmanship and labor intensity are lower, constant product quality, and cost of production reduces.
Description of drawings
Fig. 1 structural representation of the present invention;
Fig. 2 needs the guiding valve subcomponent figure that measures;
Fig. 3 is the approximately linear figure of spool travel amount (x) and subordinate list height (y) respective function.
Embodiment
, below in conjunction with physical embodiment, further illustrate the present invention.Should be understood that these embodiments only are used for explanation the present invention, are limited in scope of invention and be not used in.Should be understood that in addition those skilled in the art can make various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1, electrohydraulic control guiding valve of the present invention is controlled the moving flow measuring device of throttle window implication, and it comprises: floating type air gauge 1 can drive the mobile measuring frame 2 of process shell trace, optics meter 3, install process shell 4 and the fine motion screw type propulsion device 5 of guiding valve pair.
The process shell 4 of adjustable connection guiding valve pair in the middle of can driving above the mobile measuring frame 2 of process shell trace, both sides are separately installed with optics meter 3 and fine motion screw type propulsion device 5, the process shell 4 that the guiding valve pair is installed is provided with measurement interface, and measurement interface connects mark formula air gauge 1.
With the spool travel in the process shell 4 of fine motion screw type propulsion device 5 promotion installation guiding valve pairs, its displacement amount obtains in optimeter 3, displacement due to spool, progressively open (or closing) valve pocket and control the throttling window, imported cleaning this moment, the long buoys float of tapering glass in constant compressed-air actuated floating type air gauge 1, flow output is namely arranged, the displacement amount of spool and float height relation one to one just like this, can be take displacement as the x axle, the float height is to make functional image in the system of coordinates of y axle.
The middle installation endoporus that is provided with of process shell 4 of guiding valve pair is installed, and the center of installation endoporus and the distance that can drive between mobile measuring frame 2 table tops of process shell trace are certain value.Therefore need only change the pore size of process shell by (Fig. 2) external diameter secondary according to the guiding valve of different size, and needn't change the boundary dimension of process shell, thereby realize the pneumatic flowrate measurement of the guiding valve pair of different size at a measuring frame.Floating type air gauge 1 and optics meter 3, both are in conjunction with the system of coordinates of measuring as mapping.
During measurement, the spool of packing into is installed in the process shell 4 of guiding valve pair, are connected respectively the gauge head contact and are connected in the spool two ends with the optics meter with fine motion screw type propulsion device 5, optics meter 3, and spool and fine motion worm propeller 5 headtotails are connected.
Can drive between process shell the trace measuring frame 2 that moves and the process shell 4 that the guiding valve pair is installed and be connected by micro-mobile mechanism.Can drive the mobile measuring frame 2 of process shell trace, process shell 4 and the fine motion screw type propulsion device 5 of optics meter 3, installation guiding valve pair are connected, and are convenient to three's adjustment, improve measuring accuracy, can adjust simultaneously secondary both the original overlay capacities of (spool, valve pocket) of guiding valve and be in the meta state.
Using method of the present invention is as follows:
(1) the constant pressurized air of cleaning enters floating type air gauge, and the amount instrument is measured mouth and is connected with the secondary process shell interface of the guiding valve that will measure.
(2) the fine motion screw type propulsion device 5 of the position of adjusting process housing in measuring frame, make optics meter 3 gauge heads, spool and fine motion worm propeller headtotail are connected, and in the observation air gauge, float just changes, make spool be in the neutral position (being commonly called as " centering ") of sleeve throttling window, but uniform distribution machining allowance lock process shell finally, start spool is measured processing.
(3) fine motion screw type propulsion device 5 promotes a of spool 6 at valve pocket 7, and b moves (Fig. 3) in both sides, and the displacement amount of this moment of reflection in optics meter 3 is take the x axle as calibration range.When spool convex shoulder and sleeve throttling window started to have certain open amount (or the amount of closing), the float in floating type air gauge can up and down be floating with the size of opening (closing) amount, and the y axle that takes the reading is calibration range.This with spool travel amount (x) and subordinate list height (y) function relation one to one, make the image of approximately linear in coordinate paper, the intersection point distance on the x axle, can be considered the overlay capacity e of guiding valve sub-control throttling window.
Claims (4)
1. an electrohydraulic control guiding valve is controlled the pneumatic flowrate measuring device of throttling window overlay capacity, comprise floating type air gauge (1), can drive the mobile measuring frame (2) of process shell trace, optics meter (3), the process shell (4) of guiding valve pair is installed, fine motion screw type propulsion device (5), it is characterized in that: the described process shell (4) that drives middle connection guiding valve pair above the mobile measuring frame (2) of process shell trace, optics meter (3) and fine motion screw type propulsion device (5) are installed respectively in both sides, the process shell (4) that the guiding valve pair is installed is provided with measurement interface, measurement interface connects floating type air gauge (1).
2. electrohydraulic control guiding valve according to claim 1 is controlled the pneumatic flowrate measuring device of throttling window overlay capacity, it is characterized in that: be provided with the installation endoporus in the middle of the process shell (4) of described installation guiding valve pair, the center of installation endoporus and the distance that can drive between mobile measuring frame (2) table top of process shell trace are certain value.
3. electrohydraulic control guiding valve according to claim 1 is controlled the pneumatic flowrate measuring device of throttling window overlay capacity, it is characterized in that: during measurement, the spool of packing in the process shell (4) of described installation guiding valve pair, the spool two ends are connected 3 with fine motion screw type propulsion device (5) with the optics meter respectively) gauge head contact is connected, optics meter (3), spool and fine motion worm propeller (5) headtotail are connected.
4. electrohydraulic control guiding valve according to claim 1 is controlled the pneumatic flowrate measuring device of throttling window overlay capacity, it is characterized in that: the described drive between process shell the trace measuring frame (2) that moves and the process shell (4) that the guiding valve pair is installed is connected by micro-mobile mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103524235A CN103398045A (en) | 2013-08-14 | 2013-08-14 | Pneumatic flow measuring device of electro-hydraulic servo valve with sliding valve-controlled throttling window coverage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103524235A CN103398045A (en) | 2013-08-14 | 2013-08-14 | Pneumatic flow measuring device of electro-hydraulic servo valve with sliding valve-controlled throttling window coverage |
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| CN103398045A true CN103398045A (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013103524235A Pending CN103398045A (en) | 2013-08-14 | 2013-08-14 | Pneumatic flow measuring device of electro-hydraulic servo valve with sliding valve-controlled throttling window coverage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542727A (en) * | 2017-09-06 | 2018-01-05 | 国营芜湖机械厂 | A kind of guiding valve pair hydraulic detection device and its detection method |
| CN112727827A (en) * | 2020-12-25 | 2021-04-30 | 中航工业南京伺服控制系统有限公司 | Slide valve steady state hydrodynamic force and valve port throttling coefficient measuring device |
| CN117697279A (en) * | 2023-11-21 | 2024-03-15 | 上海衡拓液压控制技术有限公司 | Welding tool and method for valve element assembly |
Citations (2)
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| US20030208305A1 (en) * | 2002-05-03 | 2003-11-06 | Junk Kenneth W. | Method and apparatus for performing diagnostics in a control loop of a control valve |
| CN102589861A (en) * | 2012-01-13 | 2012-07-18 | 北京理工大学 | Device for measuring transition function of slide valve type pneumatic reversing valve |
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2013
- 2013-08-14 CN CN2013103524235A patent/CN103398045A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030208305A1 (en) * | 2002-05-03 | 2003-11-06 | Junk Kenneth W. | Method and apparatus for performing diagnostics in a control loop of a control valve |
| CN102589861A (en) * | 2012-01-13 | 2012-07-18 | 北京理工大学 | Device for measuring transition function of slide valve type pneumatic reversing valve |
Non-Patent Citations (3)
| Title |
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| 刘冀民: "气动测量在液压控制阀制造调试和出厂试验中的应用", 《湖南农业大学学报(自然科学版)》, no. 05, 31 October 1993 (1993-10-31) * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542727A (en) * | 2017-09-06 | 2018-01-05 | 国营芜湖机械厂 | A kind of guiding valve pair hydraulic detection device and its detection method |
| CN107542727B (en) * | 2017-09-06 | 2019-05-10 | 国营芜湖机械厂 | A kind of slide valve pair hydraulic detection device and its detection method |
| CN112727827A (en) * | 2020-12-25 | 2021-04-30 | 中航工业南京伺服控制系统有限公司 | Slide valve steady state hydrodynamic force and valve port throttling coefficient measuring device |
| CN117697279A (en) * | 2023-11-21 | 2024-03-15 | 上海衡拓液压控制技术有限公司 | Welding tool and method for valve element assembly |
| CN117697279B (en) * | 2023-11-21 | 2024-08-06 | 上海衡拓液压控制技术有限公司 | Welding tool and method for valve element assembly |
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Application publication date: 20131120 |