CN101324474A - Through-flow type static pressure dynamic force gauge - Google Patents
Through-flow type static pressure dynamic force gauge Download PDFInfo
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- CN101324474A CN101324474A CNA2008100649863A CN200810064986A CN101324474A CN 101324474 A CN101324474 A CN 101324474A CN A2008100649863 A CNA2008100649863 A CN A2008100649863A CN 200810064986 A CN200810064986 A CN 200810064986A CN 101324474 A CN101324474 A CN 101324474A
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- bearing
- hydrostatic bearing
- crowngear
- hydrostatic
- transverse axis
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Abstract
The invention relates to a tubular hydrostatic dynamic dynamometer. A hydraulic turbine runner is fastened on a horizontal shaft through bolts; the hydraulic turbine runner is connected with the horizontal shaft through a flat key, so as to transmit torque; the horizontal shaft is supported through a front-rear mechanical bearing; the front-rear mechanical bearing is fixed in the dynamic sleeve of a hydrostatic bearing; the rear end of the horizontal shaft is connected with bevel gears; the bevel gears are fixed through the flat key and the bolts, and mesh with each other; the other end of a power measuring arm is connected with a counterweight; the dynamic sleeve of the hydrostatic bearing is suspended on the static sleeve of the hydrostatic bearing, and an oil cavity between the static sleeve and the dynamic sleeve of the hydrostatic bearing is connected with an oil supply device; a vertical shaft is fastened with the bevel gears through the bolts, and the lower end of the vertical shaft is fastened with the dynamic sleeve of the hydrostatic bearing through the bolts. The hydrostatic dynamic dynamometer has the advantages that the change of horizontal force to vertical force can be achieved; a small amount of friction force hermetically generated due to the mechanical bearing and a main shaft is conducted accurately; a passage is used for reasonably solving the problems of the static oil and the leaking water of a seal; the power loss in the transmission process is reduced; the efficiency of equipment power transmission is enhanced; and the equipment processing accuracy is improved.
Description
Technical field
The present invention relates to a kind of through-flow type static pressure dynamic force gauge.
Background technology
China is in the hydropower industry, and tubular hydropower unit has a wide range of applications, but present core technology rotary wheel of water turbine, does not still have the technical know-how property right of oneself, and they all will be bought from offshore company.Owing to do not have high performance power test equipment, make the hydraulic performance R and D of China's tubular turbine to carry out.We also attempted with prior art and testing equipment in the past, as utilized torque gauge, and modes such as mechanical bearing transmission are not the equipment instabilities, are exactly low precision etc., all can't satisfy the demand, and the result ends in failure.There are indivedual similar techniques equipment in offshore company in this field, but there is tight blockade on new techniques in offshore company to China, can't understand.The test of the hydraulic performance of tubular turbine is imperative, and is very urgent, and the task of development of new dynamometer is very important.
Summary of the invention
The purpose of this invention is to provide and a kind of the through-flow type hydro-turbo machine model is carried out accuracy and stability test, improve the through-flow type static pressure dynamic force gauge of model measurement precision to greatest extent.The objective of the invention is to be achieved through the following technical solutions: the present invention is a kind of through-flow type static pressure dynamic force gauge, form by following critical piece: the tubular turbine runner, transverse axis, the main shaft seal circle, ring leaks, the front end robot bearing, the moving cover of hydrostatic bearing, the quiet cover of hydrostatic bearing, crowngear, crowngear, brake arm, vertical axes, end-face seal ring, collect cavity, test chamber, drainpipe, detector tube, pressure transducer, the counterweight counterweight, fueller, rotary wheel of water turbine is incorporated on the transverse axis by the screw handle, rotary wheel of water turbine connects by a flat key with transverse axis, transmit moment of torsion, the forward rear portion of transverse axis mechanical bearing supports, this bearing fixing is in the moving cover of hydrostatic bearing, the transverse axis rear end connects crowngear, by flat key and screw retention, crowngear and crowngear are meshing with each other, the direction of main power is changed 90 °, spread out of by putting together on the moving brake arm that puts of bearing, brake arm connects with outside steel band, main masterpiece is used on the pressure transducer, the brake arm other end is connected with the counterweight counterweight, the moving cover of hydrostatic bearing, under the oil pressure effect, be suspended in that hydrostatic bearing is quiet to put, oil pocket between the two is connected with fueller, vertical axes and crowngear close by the screw handle, the moving cover of lower end and hydrostatic bearing, is exported rotating speed closing by screw.
The subject matter that the present invention will solve has:
1, flow action is delivered to the external world and can accurately measures this energy by novel device in the energy that the hydraulic turbine produces.
2, the transmission method of power is realized the transformation of horizontal direction power to vertical direction power;
3, accurately conduct a small amount of friction force that produces because of mechanical bearing and main shaft seal, and final energy measurement goes out this part friction force;
4, rationally solve the path that static pressure oil and sealing are leaked, reach the phenomenon that does not produce the profit mixing;
5, the power loss in the reduction transmittance process improves the efficient that plant capacity transmits;
6, improve the equipment machining precision, guarantee the measuring accuracy of dynamic change;
1. principle of work:
In tubular turbine, the shaft work that flow action is produced in the inner runner of the hydraulic turbine, pass through the dynamometer invented, produce after turning to 90 °, utilize the advantage of hydrostatic bearing, the friction force that mechanical bearing is produced passes, and accurately records former merit in the dynamometer outside by force transducer, make former merit minimum by the process loss of dynamometer, improve measuring accuracy to recording merit.The major advantage of this invention is: equipment work is stable, and NE BY ENERGY TRANSFER is accurate, and outside adverse condition is little to this equipment influence, the measuring accuracy height.
2. the course of work:
Flow action by runner, flat key, is delivered to transverse axis in the moment of torsion that runner produced, and forward latter two mechanical bearing of transverse axis supports, and bearing is positioned in the moving cover of hydrostatic bearing.The transverse axis rear end connects with a crowngear, a pair of crowngear interacts, the moment of torsion that runner is produced passes and is changed to moment, and be delivered to device top by being fixed on the moving brake arm that puts of hydrostatic bearing, connect with a cover power measurement arrangement on the brake arm, thereby this part moment of torsion is measured, and entered the computing machine archive data, promptly finished the measurement of main merit by computer data acquiring.
In addition, because the friction force that mechanical bearing and main shaft seal produced also can accurately record by this equipment, also to pass to power measurement arrangement, and add computing machine and gather archive data.
The main effect of mentioning hydrostatic bearing in above-mentioned is by the oil pressure effect, on suspension and the oil film, to reduce friction the raising measuring accuracy with runner, main shaft, mechanical bearing, the moving cover of bearing, crowngear, brake arm etc.
The principle of work and the process of hydrostatic bearing are: make it under various dynamic load effects by oil pressure and feedback system between the moving cover of hydrostatic bearing and the quiet cover, all the time be in the suspended state on the oil film, before and after the moving cover of bearing two oil pressure fulcrums are arranged, to reach the effect of stable support.The oil pressure of hydrostatic bearing is supplied with by a cover fueller, and fuel feeding has the pressure feedback effect, dynamically adjusts oil film rigidity, to reach the effect of the moving cover of spring bearing dynamic load.Through detecting, the moving cover of this bearing and the gap of quiet cover are 0.03 millimeter, and sensitivity is 0.005 Newton meter.
This another key point of invention also is effectively separating of external pressure water and hydrostatic bearing interior oil, and can detect by sighting tube and leak and the effect of oil and water separation, to guarantee the security of equipment operation.Its course of work is: the moving cover of hydrostatic bearing has 0.2 mm clearance with the leading section of quiet cover, outside water might enter in the hydrostatic bearing oil pocket by this gap, for preventing that outside water from entering oil pocket, moving cover front portion is provided with a rubber end-face seal ring, but also have low amounts of water to enter, this part water enters drain chamber, discharges by drainpipe.
Excessive as the water yield, then enter test chamber, by detector tube row place, just should adjust the forward end seal circle this moment, and equipment is normally done state, the test chamber water discharge that do not have.By practice, this part-structure has been realized oil and water separation well, has reached Expected Results.
Description of drawings
The structural drawing of Fig. 1 through-flow type static pressure dynamic force gauge
The one-piece construction figure of Fig. 2 through-flow type static pressure dynamic force gauge
Embodiment
As shown in Figure 1 and Figure 2, through-flow type static pressure dynamic force gauge is made up of following critical piece: tubular turbine runner 1, transverse axis 2, main shaft seal circle 3, the ring 4 that leaks, front end robot bearing 5, the moving cover 6 of hydrostatic bearing, 8, No. 2 crowngears 9 of 7, No. 1 crowngear of the quiet cover of hydrostatic bearing, brake arm 10, vertical axes 11, end-face seal ring 12, collect cavity 13, test chamber 14, drainpipe 15, detector tube 16, pressure transducer 17, counterweight counterweight 18, fueller 19 etc.
Rotary wheel of water turbine 1 is incorporated on the transverse axis 2 by the screw handle, rotary wheel of water turbine 1 connects by a flat key with transverse axis, transmit moment of torsion, transverse axis 2 supports by mechanical bearing 5, this bearing fixing is in the moving cover 6 of hydrostatic bearing, transverse axis 2 rear ends connect No. 2 crowngears 9, by flat key and screw retention, No. 2 crowngears 9 and No. 1 crowngear 8 interact, the direction of main power is changed 90 °, spread out of by the brake arm 10 that puts together on the moving cover 6 of bearing, brake arm 10 connects with outside steel band, main masterpiece is used on the pressure transducer 17, and by calculating image data and archive data.Brake arm 10 other ends are connected with counterweight counterweight 18.
The moving cover 6 of hydrostatic bearing under the oil pressure effect, is suspended on the quiet cover 7 of hydrostatic bearing, and oil pocket between the two is connected with fueller 19.
Vertical axes 11 and No. 1 crowngear close by the screw handle, and the moving cover 6 of lower end and hydrostatic bearing, is exported rotating speed closing by screw.
By leaking on a small quantity of main shaft seal circle 3, by the ring 4 that leaks, enter in the test chamber 14, flow into detector tube 16, to check the water leakage of main shaft seal circle 3.
By leaking on a small quantity of end-face seal ring 12, enter collect cavity 13, flow into detector tube 15, to check the water leakage of main shaft seal circle 12.
Test result of the present invention proves:
1, successfully solve the crucial difficult problem of tubular turbine model measurement, replenished the domestic blank of this technology, reached the purpose of test accuracy and stability, the measuring accuracy of model has had large increase.
2, by practice examining, reach ideal effect, realized the function that power is effective, the high precision transmission is measured;
3, the successful Application of this invention has been broken overseas enterprise to the bottling up of domestic technique, realized from " can not " to the transformation of " possibility ";
4, detect through various means, the energy conversion rate of dynamometer reaches 99.9%, and the facility precision is in 0.05%.
5, stable equipment operation, reliable;
6, the advantage of equipment is: the measuring accuracy height, and the energy conversion rate height, axle is stable, reliable.
Claims (1)
1, a kind of through-flow type static pressure dynamic force gauge, it is characterized in that: form: tubular turbine runner (1) by following critical piece, transverse axis (2), main shaft seal circle (3), ring (4) leaks, front end robot bearing (5), the moving cover of hydrostatic bearing (6), the quiet cover of hydrostatic bearing (7), crowngear (8), crowngear (9), brake arm (10), vertical axes (11), end-face seal ring (12), collect cavity (13), test chamber (14), drainpipe (15), detector tube (16), pressure transducer (17), counterweight counterweight (18), fueller (19), rotary wheel of water turbine (1) is incorporated on the transverse axis (2) by the screw handle, rotary wheel of water turbine (1) connects by a flat key with transverse axis, transmit moment of torsion, the forward rear portion of transverse axis (2) mechanical bearing supports, this bearing fixing is in the moving cover of hydrostatic bearing (6), transverse axis (2) rear end connects crowngear (9), by flat key and screw retention, crowngear (9) is meshing with each other with crowngear (8), the direction of main power is changed 90 °, spread out of by the brake arm (10) that puts together on the moving cover of bearing (6), brake arm (10) connects with outside steel band, main masterpiece is used on the pressure transducer (17), brake arm (10) other end is connected with counterweight counterweight (18), the moving cover of hydrostatic bearing (6), under the oil pressure effect, be suspended in that hydrostatic bearing is quiet to put, oil pocket between the two is connected with fueller, vertical axes (11) is closed by the screw handle with crowngear, the moving cover of lower end and hydrostatic bearing (6), is exported rotating speed closing by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100649863A CN101324474A (en) | 2008-07-24 | 2008-07-24 | Through-flow type static pressure dynamic force gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100649863A CN101324474A (en) | 2008-07-24 | 2008-07-24 | Through-flow type static pressure dynamic force gauge |
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| Publication Number | Publication Date |
|---|---|
| CN101324474A true CN101324474A (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100649863A Pending CN101324474A (en) | 2008-07-24 | 2008-07-24 | Through-flow type static pressure dynamic force gauge |
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| CN (1) | CN101324474A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281790A (en) * | 2018-09-25 | 2019-01-29 | 江苏大学镇江流体工程装备技术研究院 | A kind of two-way bulb through-flow turbine |
-
2008
- 2008-07-24 CN CNA2008100649863A patent/CN101324474A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281790A (en) * | 2018-09-25 | 2019-01-29 | 江苏大学镇江流体工程装备技术研究院 | A kind of two-way bulb through-flow turbine |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081217 |