CN103308126B - Quick detection device for aperture restrictor, and detection method thereof - Google Patents
Quick detection device for aperture restrictor, and detection method thereof Download PDFInfo
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- CN103308126B CN103308126B CN201310232877.9A CN201310232877A CN103308126B CN 103308126 B CN103308126 B CN 103308126B CN 201310232877 A CN201310232877 A CN 201310232877A CN 103308126 B CN103308126 B CN 103308126B
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- restriction device
- orifice restriction
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Abstract
a quick detection device for an aperture restrictor comprises an upper cover plate, a mounting plate, a lower cover plate and a gage, wherein a pressure fluid inlet is formed in the center of the upper cover plate; upper cover plate horizontal holes are formed in the upper cover plate, with one ends connected with the pressure fluid inlet; each upper cover plate horizontal hole is connected with an upper cover plate connection hole; lower cover plate horizontal holes are formed in the lower cover plate, and each is connected with a lower cover plate connection hole; a stepped hole is formed in the mounting plate, in which the aperture restrictor is mounted; and the upper cover plate, the mounting plate and the lower cover plate are connected through retaining screws. Due to the adoption the quick detection device for the aperture restrictor, and a detection method thereof, the quick detection for the aperture restrictor is realized, and the plurality of aperture restrictors can be detected at one time, so that the detection effect is better.
Description
Technical field
The present invention relates to testing equipment field, particularly a kind of orifice restriction device device for fast detecting and detection method thereof.
Background technology
Flow controller is as a kind of key components and parts of static-pressure sliding bearing, fundamental purpose is before making external pressurized fluid enter bearing clearance, produce restriction effect, and make formation have the stable lubricating fluid film of certain bearing capacity and stiffness, the therefore load-carrying properties of its processing precision direct influence sliding bearing.In various flow controller, orifice restriction device, due to its easily processing, easily replacing and rigidity high, is therefore widely used in the middle of various static-pressure sliding bearing.General orifice restriction device hole diameter is at 0.2 ~ 1mm, and when lubricant is liquid, hole diameter gets higher value, and when lubricant is gas, hole diameter gets the small value.To the aperture of minor diameter like this, traditional detection method is difficult to ensure its precision, therefore error can be produced, some hole diameter errors even reach 0.1mm, this directly affects the load-carrying properties of bearing, is therefore badly in need of a kind of orifice restriction device device for fast detecting, detects orifice restriction device accurately fast, and then reduction error, improve the load-carrying properties of bearing.
Summary of the invention
For above problem, the present invention is by a kind of orifice restriction device device for fast detecting of design and detection method thereof, the quick detection of orifice restriction device can be realized, and can once detect multiple orifice restriction device, therefore there is good Detection results, the invention provides a kind of orifice restriction device device for fast detecting, comprise upper cover plate, installing plate, lower cover and meter, described upper cover plate is circular, there is pressure fluid entrance at described upper cover plate center, upper cover plate transverse holes is had in described upper cover plate, described upper cover plate transverse holes one end is connected with pressure fluid entrance, described upper cover plate transverse holes was around pressure fluid entrance one week, described upper cover plate transverse holes outlet has screw thread, described upper cover plate transverse holes outlet has blocking stud, described each upper cover plate transverse holes is connected with a upper cover plate connecting hole,
Described lower cover is circular, lower cover transverse holes is had in described lower cover, described lower cover transverse holes quantity is identical with upper cover plate transverse holes quantity, described lower cover transverse holes one week around lower cover center, and described each lower cover transverse holes is connected with a lower cover connecting hole;
Described installing plate is circular, shoulder hole is had in described installing plate, described orifice restriction device is arranged in shoulder hole, described shoulder hole comprises upper shoulder hole and downstairs hole, described upper shoulder hole lower interface is connected with interface on downstairs hole, on described upper shoulder hole, interface is connected with corresponding upper cover plate connecting hole lower interface, and described downstairs hole lower interface is connected with interface on corresponding lower cover connecting hole;
Described upper cover plate has mounting hole, mounting hole one week around upper cover plate center, described installing plate has mounting hole corresponding with upper cover plate mounting hole, described lower cover has threaded hole corresponding with upper cover plate mounting hole, described upper cover plate, installing plate are connected by gib screw with lower cover, described gib screw is through upper cover plate mounting hole, installing plate mounting hole and lower cover threaded hole, and during detection, the corresponding lower cover transverse holes outlet of orifice restriction device to be detected is connected with meter.
As a further improvement on the present invention, the sensing range of described orifice restriction device small aperture is 0.2-1mm, and the present invention is the orifice restriction device of 0.2-1mm mainly for detection of small aperture, and orifice restriction device small aperture is that 0.2-1mm all can detect.
As a further improvement on the present invention, described upper cover plate transverse holes has 3-12, and the orifice restriction device that transverse holes more can detect is more, but processing cost also can raise, the present invention can one-time detection 3 or multiple orifice restriction device, and 8 upper cover plate transverse holes cost performances are best.
As a further improvement on the present invention, the described upper shoulder hole degree of depth is greater than orifice restriction device length, the diameter in described downstairs hole is less than the external diameter of orifice restriction device and is greater than the diameter of orifice restriction device aperture, such orifice restriction device is arranged in shoulder hole by interference mode, can prevent gas leakage like this and affect testing result.
As a further improvement on the present invention, described meter is flowmeter or velocimeter, the present invention contrasts determine that whether orifice restriction device is qualified by detecting the flow velocity of orifice restriction device standard component effluent fluid or the flow of unit interval and other orifice restriction devices, and therefore use traffic meter or velocimeter are all passable.
As a further improvement on the present invention, there is groove the upside of described upper shoulder hole and the downside in downstairs hole, have O-ring seal in described groove, can improve pick-up unit impermeability by arranging O-ring seal.
As a further improvement on the present invention, during detection, the corresponding lower cover transverse holes outlet of orifice restriction device to be detected is also connected with pressure fluid recovery system, and the present invention can arrange pressure fluid recovery system and reclaim the pressure fluid tested.
As a further improvement on the present invention, described lower cover transverse holes outlet has screw thread, and described no upper cover plate transverse holes outlet has blocking stud, exports available blocking stud block to prevent pressure fluid from leaking for no lower cover transverse holes.
The concrete detecting step of the present invention is as follows, it is characterized in that:
1) the orifice restriction device as standard component and detected member is arranged in the shoulder hole of orifice restriction device device for fast detecting installing plate, and install and measure table at each measuring circuit being provided with orifice restriction device, all the other the hole blocking studs not installing orifice restriction device are blocked, pressure fluid is passed into fluid a period of time of certain pressure by pressure fluid entrance, fluid flows through corresponding upper cover plate transverse holes and upper cover plate connecting hole and enters orifice restriction device as standard component and detected member, aperture through orifice restriction device flows out, the meter of each measuring circuit is entered again through corresponding lower cover transverse holes and lower cover connecting hole, finally enter pressure fluid recovery system,
2) measure rate of flow of fluid as the loop in the orifice restriction device place device for fast detecting of standard component and detected member or flow by meter, and record is carried out to it;
3) orifice restriction device the data obtained to be measured and the orifice restriction device the data obtained as standard component are contrasted, if rate of flow of fluid measured by orifice restriction device loop to be measured or flow identical with rate of flow of fluid measured by the orifice restriction device loop as standard component or flow, be pieces O.K., if rate of flow of fluid or flow measured by orifice restriction device loop to be measured are greater than rate of flow of fluid or flow measured by the orifice restriction device loop as standard component, then orifice restriction device to be measured is defective that small aperture is greater than standard component small aperture, if rate of flow of fluid or flow measured by orifice restriction device loop to be measured are less than rate of flow of fluid or flow measured by the orifice restriction device loop as standard component, then orifice restriction device to be measured is defective that small aperture is less than standard component small aperture.
The present invention is a kind of orifice restriction device device for fast detecting and detection method thereof, this device is by passing into the fluid of certain pressure to standard aperture flow controller, due to liquid resistance effect, the fluid that fluid flows out through orifice restriction device will produce step-down, and then affect flow velocity and the flow of stream fluid, detect flow velocity or the flow of unit interval of orifice restriction device standard component effluent fluid like this, the pore size difference that the flow velocity of fluid or current capacity contrast draw each orifice restriction device is gone out again by the flow velocity of orifice restriction device standard component effluent fluid or the flow of unit interval and other orifice restriction devices.Like this after determining that a certain orifice restriction device is standard size, just can contrast the flow controller that above-mentioned detection data decimation is suitable with its size.Compared with traditional Pore Diameter Detection technology, it is fast that this device has detection speed, and detection means is simple and can the advantage of batch detection.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is upper cover plate cut-open view of the present invention;
Fig. 3 is upper cover plate vertical view of the present invention;
Fig. 4 is installing plate cut-open view of the present invention;
Fig. 5 is installing plate vertical view of the present invention;
Fig. 6 is lower cover cut-open view of the present invention;
Fig. 7 is lower cover vertical view of the present invention;
Component in figure is:
1, upper cover plate; 2, installing plate; 3, lower cover;
4, pressure fluid entrance; 5, upper cover plate transverse holes; 6, upper cover plate connecting hole;
7, mounting hole; 8, upper shoulder hole; 9, downstairs hole;
10, groove; 11, lower cover transverse holes; 12, lower cover connecting hole;
13, threaded hole; 14, orifice restriction device; 15, meter;
16, pressure fluid recovery system; 17, stud is blocked; 18, trip bolt;
19, O-ring seal.
Embodiment
Below in conjunction with drawings and Examples, invention is described in detail:
The present invention, by a kind of orifice restriction device device for fast detecting of design and detection method thereof, can realize the quick detection of orifice restriction device, and can once detect multiple orifice restriction device, therefore have good Detection results.
As a kind of specific embodiment of the present invention, the invention provides schematic diagram a kind of orifice restriction device device for fast detecting as shown in Figure 1, comprise upper cover plate 1, installing plate 2, lower cover 3 and meter 15, described upper cover plate 1 is circular as shown in Figures 2 and 3, the sensing range of described orifice restriction device 14 small aperture is 0.2-1mm, the present invention is the orifice restriction device 14 of 0.2-1mm mainly for detection of small aperture, orifice restriction device 14 small aperture is that 0.2-1mm all can detect, there is pressure fluid entrance 4 at described upper cover plate 1 center, upper cover plate transverse holes 5 is had in described upper cover plate 1, described upper cover plate transverse holes 5 one end is connected with pressure fluid entrance 4, described upper cover plate transverse holes 5 was around pressure fluid entrance 4 one weeks, described upper cover plate transverse holes 5 outlet has screw thread, described upper cover plate transverse holes 5 outlet has blocking stud 17, leak to prevent pressure fluid, described each upper cover plate transverse holes 5 is connected with a upper cover plate connecting hole 6,
Lower cover 3 of the present invention is circular as shown in Figures 6 and 7, lower cover transverse holes 11 is had in described lower cover 3, described lower cover transverse holes 11 quantity is identical with upper cover plate transverse holes 5 quantity, described lower cover transverse holes 11 one week around lower cover 3 center, described each lower cover transverse holes 11 is connected with a lower cover connecting hole 12;
Installing plate 2 of the present invention is circular as shown in Figures 4 and 5, shoulder hole is had in described installing plate 2, described orifice restriction device 14 is arranged in shoulder hole, described shoulder hole comprises upper shoulder hole 8 and downstairs hole 9, described upper shoulder hole 8 lower interface is connected with interface on downstairs hole 9, on described upper shoulder hole 8, interface is connected with corresponding upper cover plate connecting hole 6 lower interface, and described downstairs hole 9 lower interface is connected with interface on corresponding lower cover connecting hole 12;
Upper cover plate 1 of the present invention has mounting hole 7, mounting hole 7 one week around upper cover plate 1 center, described installing plate 2 has mounting hole 7 corresponding with upper cover plate 1 mounting hole 7, described lower cover 3 has threaded hole 13 corresponding with upper cover plate 1 mounting hole 7, described upper cover plate 1, installing plate 2 is connected by gib screw 18 with lower cover 3, described gib screw 18 is through upper cover plate 1 mounting hole 7, installing plate 2 mounting hole 7 and lower cover 3 threaded hole 13, during detection, corresponding lower cover transverse holes 11 outlet of orifice restriction device 14 is connected with meter 15, described meter 15 is flowmeter, the present invention contrasts determine that whether orifice restriction device is qualified by detecting the flow velocity of orifice restriction device standard component effluent fluid or the flow of unit interval and other orifice restriction devices, therefore use traffic meter or velocimeter are all passable.
As a kind of best specific embodiment of the present invention, the invention provides schematic diagram a kind of orifice restriction device device for fast detecting as shown in Figure 1, comprise upper cover plate 1, installing plate 2, lower cover 3 and meter 15, described upper cover plate 1 is circular as shown in Figures 2 and 3, the sensing range of described orifice restriction device 14 small aperture is 0.2-1mm, the present invention is the orifice restriction device 14 of 0.2-1mm mainly for detection of small aperture, orifice restriction device 14 small aperture is that 0.2-1mm all can detect, there is pressure fluid entrance 4 at described upper cover plate 1 center, upper cover plate transverse holes 5 is had in described upper cover plate 1, described upper cover plate transverse holes 5 one end is connected with pressure fluid entrance 4, described upper cover plate transverse holes 5 has 8, the orifice restriction device that transverse holes more can detect is more, but processing cost also can raise, the present invention can one-time detection 3 or multiple orifice restriction device, 8 upper cover plate transverse holes 5 cost performances are best, described upper cover plate transverse holes 5 was around pressure fluid entrance 4 one weeks, described upper cover plate transverse holes 5 outlet has screw thread, described upper cover plate transverse holes 5 outlet has blocking stud 17, leak to prevent pressure fluid, described each upper cover plate transverse holes 5 is connected with a upper cover plate connecting hole 6,
Lower cover 3 of the present invention is circular as shown in Figures 6 and 7, lower cover transverse holes 11 is had in described lower cover 3, described lower cover transverse holes 11 quantity is identical with upper cover plate transverse holes 5 quantity, described lower cover transverse holes 11 one week around lower cover 3 center, described each lower cover transverse holes 11 is connected with a lower cover connecting hole 12, described lower cover transverse holes 12 outlet has screw thread, described no upper cover plate transverse holes 12 outlet has blocking stud 17, exports available blocking stud 17 block to prevent pressure fluid from leaking for no lower cover transverse holes 12;
Installing plate 2 of the present invention is circular as shown in Figures 6 and 7, shoulder hole is had in described installing plate 2, described orifice restriction device 14 is arranged in shoulder hole, described shoulder hole comprises upper shoulder hole 8 and downstairs hole 9, described upper shoulder hole 8 lower interface is connected with interface on downstairs hole 9, on described upper shoulder hole 8, interface is connected with corresponding upper cover plate connecting hole 6 lower interface, described downstairs hole 9 lower interface is connected with interface on corresponding lower cover connecting hole 12, described upper shoulder hole 8 degree of depth is greater than orifice restriction device 14 length, the diameter in described downstairs hole 9 is less than the external diameter of orifice restriction device 14 and is greater than the diameter of orifice restriction device 14 aperture, such orifice restriction device 14 is arranged in shoulder hole by interference mode, gas leakage can be prevented like this and affect testing result, there is groove 10 upside of described upper shoulder hole 8 and the downside in downstairs hole 9, O-ring seal 19 is had in described groove 10, pick-up unit impermeability can be improved by arranging O-ring seal 19,
Upper cover plate 1 of the present invention has mounting hole 7, mounting hole 7 one week around upper cover plate 1 center, described installing plate 2 has mounting hole 7 corresponding with upper cover plate 1 mounting hole 7, described lower cover 3 has threaded hole 13 corresponding with upper cover plate 1 mounting hole 7, described upper cover plate 1, installing plate 2 is connected by gib screw 18 with lower cover 3, described gib screw 18 is through upper cover plate 1 mounting hole 7, installing plate 2 mounting hole 7 and lower cover 3 threaded hole 13, during detection, corresponding lower cover transverse holes 11 outlet of orifice restriction device 14 to be detected is connected with meter 15, described meter 15 is velocimeter, the present invention contrasts determine that whether orifice restriction device is qualified by detecting the flow velocity of orifice restriction device standard component effluent fluid or the flow of unit interval and other orifice restriction devices, therefore use traffic meter or velocimeter are all passable, during detection, the corresponding lower cover transverse holes 11 of orifice restriction device exports and is also connected with pressure fluid recovery system 16, the present invention can arrange pressure fluid recovery system 16 and reclaim the pressure fluid tested.
When the present invention works, concrete detecting step is as follows:
1) the orifice restriction device 14 as standard component and detected member is arranged in the shoulder hole of orifice restriction device device for fast detecting installing plate 2, and install and measure table 15 at each measuring circuit being provided with orifice restriction device 14, all the other holes blocking stud 17 not installing orifice restriction device 14 is blocked, pressure fluid is passed into fluid a period of time of certain pressure by pressure fluid entrance 4, fluid flows through corresponding upper cover plate transverse holes 5 and upper cover plate connecting hole 6 and enters orifice restriction device 14 as standard component and detected member, aperture through orifice restriction device 14 flows out, the meter 15 of each measuring circuit is entered again through corresponding lower cover transverse holes 11 and lower cover connecting hole 12, finally enter pressure fluid recovery system 16,
2) measure rate of flow of fluid as the loop in the orifice restriction device 14 place device for fast detecting of standard component and detected member or flow by meter 15, and record is carried out to it;
3) orifice restriction device 14 the data obtained to be measured and orifice restriction device 14 the data obtained as standard component are contrasted, if rate of flow of fluid measured by orifice restriction device 14 loop to be measured or flow identical with rate of flow of fluid measured by orifice restriction device 14 loop as standard component or flow, be pieces O.K., if rate of flow of fluid or flow measured by orifice restriction device 14 loop to be measured are greater than rate of flow of fluid or flow measured by orifice restriction device 14 loop as standard component, then orifice restriction device 14 to be measured is greater than defective of standard component small aperture for small aperture, if rate of flow of fluid or flow measured by orifice restriction device 14 loop to be measured are less than rate of flow of fluid or flow measured by orifice restriction device 14 loop as standard component, then orifice restriction device 14 to be measured is less than defective of standard component small aperture for small aperture.
The above is only preferred embodiment of the present invention, is not restriction the present invention being made to any other form, and any amendment done according to technical spirit of the present invention or equivalent variations, still belong to the present invention's scope required for protection.
Claims (9)
1. an orifice restriction device device for fast detecting, comprise upper cover plate (1), installing plate (2), lower cover (3) and meter (15), it is characterized in that: described upper cover plate (1) is for circular, there is pressure fluid entrance (4) at described upper cover plate (1) center, upper cover plate transverse holes (5) is had in described upper cover plate (1), described upper cover plate transverse holes (5) one end is connected with pressure fluid entrance (4), described upper cover plate transverse holes (5) was around pressure fluid entrance (4) weeks, described upper cover plate transverse holes (5) outlet has screw thread, described upper cover plate transverse holes (5) outlet has blocking stud (17), described each upper cover plate transverse holes (5) is connected with a upper cover plate connecting hole (6),
Described lower cover (3) is circular, lower cover transverse holes (11) is had in described lower cover (3), described lower cover transverse holes (11) quantity is identical with upper cover plate transverse holes (5) quantity, described lower cover transverse holes (11) one week around lower cover (3) center, described each lower cover transverse holes (11) is connected with a lower cover connecting hole (12);
Described installing plate (2) is circular, described installing plate has shoulder hole in (2), described orifice restriction device (14) is arranged in shoulder hole, described shoulder hole comprises upper shoulder hole (8) and downstairs hole (9), described upper shoulder hole (8) lower interface is connected with downstairs hole (9) upper interface, the upper interface of described upper shoulder hole (8) is connected with corresponding upper cover plate connecting hole (6) lower interface, and described downstairs hole (9) lower interface is connected with the upper interface of corresponding lower cover connecting hole (12);
Described upper cover plate (1) has mounting hole (7), mounting hole (7) one week around upper cover plate (1) center, described installing plate (2) has mounting hole (7) corresponding with upper cover plate (1) mounting hole (7), described lower cover (3) has threaded hole (13) corresponding with upper cover plate (1) mounting hole (7), described upper cover plate (1), installing plate (2) is connected by gib screw (18) with lower cover (3), described gib screw (18) is through upper cover plate (1) mounting hole (7), installing plate (2) mounting hole (7) and lower cover (3) threaded hole (13), during detection, corresponding lower cover transverse holes (11) outlet of orifice restriction device (14) is connected with meter (15).
2. a kind of orifice restriction device device for fast detecting according to claim 1, is characterized in that: the sensing range of described orifice restriction device (14) small aperture is 0.2-1mm.
3. a kind of orifice restriction device device for fast detecting according to claim 1, is characterized in that: described upper cover plate transverse holes (5) has 3-12.
4. a kind of orifice restriction device device for fast detecting according to claim 1, it is characterized in that: described upper shoulder hole (8) degree of depth is greater than orifice restriction device (14) length, the diameter of described downstairs hole (9) is less than the external diameter of orifice restriction device (14) and is greater than the diameter of orifice restriction device (14) aperture.
5. a kind of orifice restriction device device for fast detecting according to claim 1, is characterized in that: described meter (15) is flowmeter or velocimeter.
6. a kind of orifice restriction device device for fast detecting according to claim 1, is characterized in that: there is groove (10) upside of described upper shoulder hole (8) and the downside of downstairs hole (9), have O-ring seal (19) in described groove (10).
7. a kind of orifice restriction device device for fast detecting according to claim 1, is characterized in that: during detection, corresponding lower cover transverse holes (11) outlet of orifice restriction device (14) to be detected is also connected with pressure fluid recovery system (16).
8. a kind of orifice restriction device device for fast detecting according to claim 1, is characterized in that: described lower cover transverse holes (11) outlet has screw thread, and no lower cover transverse holes (11) outlet has blocking stud (17).
9. use the described orifice restriction device device for fast detecting of one of claim 1-8 to detect the detection method of orifice restriction device, concrete detecting step is as follows, it is characterized in that:
1) the orifice restriction device (14) as standard component and detected member is arranged in the shoulder hole of orifice restriction device device for fast detecting installing plate (2), and install and measure table (15) at each measuring circuit being provided with orifice restriction device (14), all the other holes blocking stud (17) of not installing orifice restriction device (14) are blocked, pressure fluid is passed into fluid a period of time of certain pressure by pressure fluid entrance (4), fluid flows through corresponding upper cover plate transverse holes (5) and upper cover plate connecting hole (6) and enters orifice restriction device (14) as standard component and detected member, aperture through orifice restriction device (14) flows out, pass through the meter (15) that corresponding lower cover transverse holes (11) and lower cover connecting hole (12) enter each measuring circuit again, finally enter pressure fluid recovery system (16),
2) measure rate of flow of fluid as the loop in orifice restriction device (14) the place device for fast detecting of standard component and detected member or flow by meter (15), and record is carried out to it;
3) orifice restriction device (14) the data obtained to be measured and orifice restriction device (14) the data obtained as standard component are contrasted, if rate of flow of fluid measured by orifice restriction device (14) loop to be measured or flow identical with rate of flow of fluid measured by orifice restriction device (14) loop as standard component or flow, be pieces O.K., if rate of flow of fluid or flow measured by orifice restriction device (14) loop to be measured are greater than rate of flow of fluid or flow measured by orifice restriction device (14) loop as standard component, then orifice restriction device (14) to be measured is greater than defective of standard component small aperture for small aperture, if rate of flow of fluid or flow measured by orifice restriction device (14) loop to be measured are less than rate of flow of fluid or flow measured by orifice restriction device (14) loop as standard component, then orifice restriction device (14) to be measured is less than defective of standard component small aperture for small aperture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310232877.9A CN103308126B (en) | 2013-06-13 | 2013-06-13 | Quick detection device for aperture restrictor, and detection method thereof |
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| CN201310232877.9A CN103308126B (en) | 2013-06-13 | 2013-06-13 | Quick detection device for aperture restrictor, and detection method thereof |
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| CN103308126B true CN103308126B (en) | 2015-06-17 |
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| CN104677468B (en) * | 2013-11-29 | 2018-01-16 | 清华大学 | Verify the device and method of sonic nozzle |
| CN104614160B (en) * | 2015-01-07 | 2017-05-03 | 东南大学 | Simple device for grouping, selecting and matching static bearing restrictor |
| DE112016001840T5 (en) * | 2015-04-22 | 2018-01-04 | Reliance Industries Limited | A spinner plate |
| CN106382302B (en) * | 2016-11-24 | 2019-07-12 | 天津职业技术师范大学 | It is a kind of can on-line checking pressure fault and rapid-maintenance hydrostatic bearing |
| CN108807653B (en) * | 2018-04-25 | 2020-02-21 | 四川省欧玛科技有限公司 | Method for preparing conductive through hole of ceramic substrate |
| CN116460203B (en) * | 2023-06-19 | 2023-09-08 | 浙江易锻精密机械有限公司 | Stamping system with automatic detection function and operation method of stamping system |
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| US3101915A (en) * | 1962-05-23 | 1963-08-27 | Cameron Machine Co | Apparatus for controlling tension in a running web |
| JPS601565B2 (en) * | 1979-10-24 | 1985-01-16 | 日産自動車株式会社 | Intake air amount detector |
| JPH06258108A (en) * | 1993-03-08 | 1994-09-16 | Yazaki Corp | Flowrate sensing device |
| CN101435466A (en) * | 2008-12-25 | 2009-05-20 | 哈尔滨工业大学 | Porous gas static pressure thrust bearing |
| CN203287085U (en) * | 2013-06-13 | 2013-11-13 | 金陵科技学院 | Rapid detection device for pinhole throttler |
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Effective date of registration: 20191220 Address after: 314207 room 212, No. 30, Guangzhong South Road, Guangchen Town, Pinghu City, Jiaxing City, Zhejiang Province Patentee after: Pinghu qianruixiang Agricultural Technology Co., Ltd Address before: No. 99 Jiangning Road, Nanjing District hirokage 210000 cities in Jiangsu Province Patentee before: Jinling Institute of Technology |
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