CN113882989A - Simulation test device for hydraulic turbine of hydropower station - Google Patents
Simulation test device for hydraulic turbine of hydropower station Download PDFInfo
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- CN113882989A CN113882989A CN202111078299.9A CN202111078299A CN113882989A CN 113882989 A CN113882989 A CN 113882989A CN 202111078299 A CN202111078299 A CN 202111078299A CN 113882989 A CN113882989 A CN 113882989A
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- control
- guide groove
- volute
- simulation test
- hydropower station
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 238000004088 simulation Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000033001 locomotion Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010248 power generation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention provides a hydropower station water turbine simulation test device which comprises a rack, a volute model, a control plate and a control rod, wherein the volute model is arranged on the rack; the volute model is arranged between the water channel flow channel and the tail water channel flow channel and comprises a volute body and a needle valve arranged in the volute body; the control rod is connected with the control panel and drives the control panel to reciprocate in the horizontal direction through power provided by the motor; the control panel is provided with a guide groove, and the initial section and the final section of the guide groove have a height difference; the tail end of a connecting rod of the needle valve is arranged in the guide groove and can slide along the guide groove in a reciprocating mode along with the movement of the control plate, and therefore the opening or closing of the flow in the volute body is controlled. The technical scheme of the invention can effectively improve the test precision of the model for increasing the load shedding load of the hydropower system initiated by the hydropower station and has the effect of universality so as to save the test cost.
Description
Technical Field
The invention belongs to the technical field of hydraulic and hydroelectric engineering, and particularly relates to a water turbine simulation test device applied to a hydropower station model test.
Background
With the development of water conservancy and hydropower industry in China, a large number of giant hydropower stations are planned and constructed in the southwest area of China, particularly Tibet. Due to the particularity of hydropower station construction, the related technical specifications require that large and medium hydropower station engineering should verify the safety and stability of the water diversion power generation system under each limit working condition through a model test in combination with actual needs. However, water turbines selected by different hydropower stations have different characteristics, water turbine models are expensive to manufacture, water turbines of different models cannot be used universally in system model tests, and the reuse rate is low. Most of the existing tests directly use the valve to replace a water turbine to carry out model tests, flow characteristics in the water turbine cannot be accurately simulated, and certain errors exist. Therefore, the simulation device of the water turbine is improved, the accuracy of the model test is improved, and the test cost is reduced, so that the requirement of the industry is met.
Disclosure of Invention
One of the purposes of the invention is to overcome the defects in the prior art and provide a water turbine simulation test device which can effectively improve the test precision of a hydropower system load shedding increasing model initiated by a hydropower station and has universality so as to save the test cost.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a hydropower station water turbine simulation test device comprises a rack, a volute model, a control plate and a control rod; the volute model is arranged between the water channel flow channel and the tail water channel flow channel and comprises a volute body and a needle valve arranged in the volute body; the control rod is connected with the control plate and drives the control plate to reciprocate in the horizontal direction through power provided by the motor; the control panel is provided with a guide groove, and the initial section and the final section of the guide groove have a height difference; the tail end of a connecting rod of the needle valve is arranged in the guide groove and can slide along the guide groove along with the motion of the control plate in a reciprocating mode so as to control the opening or closing of the flow in the volute body.
Furthermore, the volute model further comprises a flow adjusting ring arranged in the volute body, and the needle valve is arranged in the flow adjusting ring.
Furthermore, the control rod is a spiral telescopic rod, and a gear transmission is connected between the control rod and the motor.
Further, the guide groove comprises a lower horizontal section, an upper horizontal section and a middle section for connecting the lower horizontal section and the upper horizontal section; the middle section is an oblique straight line.
Further, the guide groove comprises a lower horizontal section, an upper horizontal section and a middle section for connecting the lower horizontal section and the upper horizontal section; the middle section is a curved arc line.
Furthermore, the control panel is also provided with a limiting assembly which comprises an upper pulley and a lower pulley which are fixed on the rack; the upper edge face and the lower edge face of the control panel are horizontal planes, and the control panel is arranged between the upper pulley and the lower pulley, the upper edge face and the lower edge face are in surface sliding contact with the upper pulley and the lower pulley respectively.
Furthermore, the control panel is also provided with a limiting assembly which comprises a horizontal transverse limiting groove arranged on the control panel and a limiting block arranged on the rack; the limiting block penetrates into the limiting groove and is in sliding contact with the wall surface of the limiting groove.
Furthermore, a control system is also arranged on the control panel and comprises a trigger device, a front circuit breaker and a rear circuit breaker; the front circuit breaker and the rear circuit breaker are respectively and correspondingly arranged on the rack above or below the initial section and the final section of the guide groove; the trigger device is disposed between the front disconnect switch and the rear disconnect switch.
Further, the control system further comprises a controller connected to the motor, the front disconnect switch, and the rear disconnect switch.
Further, the frame is fixed panel, fixed panel laminating the control panel setting just fixed panel is my top edge and lower limb all surpass the top edge and the lower limb of control panel.
The beneficial effects of the technical scheme are as follows:
(1) on one hand, the accuracy of the model test of the water lifting power station can be effectively improved by matching the control plate with the special guide groove with the needle valve; and because the control panels of different shapes of guide grooves can be replaced to adapt to the water flow characteristics of different water turbines, the main body part of the simulation device can be reused, the test cost is effectively reduced, and the test period is shortened.
(2) On the other hand, the invention uses the volute model to better simulate the water flow state in the water turbine, which is helpful to improve the similarity of the model and the prototype, thereby improving the test precision.
(3) The manual flow adjusting ring is arranged in the volute model, so that the flow in the initial state can be defined according to design requirements, and different working conditions of the water diversion power generation system can be conveniently simulated.
(4) The invention adopts the motor to drive, and is controlled by the controller, thereby effectively improving the accuracy of opening and closing time and effectively reducing the system error compared with manual valve closing.
(5) The invention is provided with the circuit breaker and the circuit breaker trigger device, and can automatically cut off after the control valve reaches the maximum stroke, thereby effectively avoiding damaging equipment.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the control panel of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Reference is made to the accompanying drawings. The embodiment comprises a rack, a volute model, a control panel, a control rod, a limiting assembly and a control system. The volute model is used for simulating water flow inside the water turbine, is located below the control plate 9, and is arranged between the water channel flow channel 13 and the tail water channel flow channel 14. The volute model includes a volute body 12, a manual flow adjustment ring 11 disposed within the volute body 12, and a needle valve 10 disposed within the flow adjustment ring 11. The manual flow adjusting ring 11 is used for adjusting the flow of the initial test state, and further simulating different working conditions of the water diversion power generation system.
The control rod is connected with the control plate 9 and drives the control plate 9 to reciprocate in the horizontal direction through the power provided by the motor 1. Specifically, the control lever is spiral telescopic link 8 in this embodiment, and the connection is equipped with gear derailleur 2 between control lever and the motor. The controller 3 controls the action of the motor 1, and then the gear transmission 2 reduces the rotating speed and increases the torque to drive the spiral telescopic rod 8 to move horizontally together with the control plate 9. The control panel 9 is connected with the output end of the spiral telescopic rod 8 through a mounting hole 16 arranged on the side surface. The gear speed changer is adopted, so that the consistency of the opening and closing time of each test can be kept, and the control plate 9 can be ensured to move at a constant speed in the horizontal direction.
The control plate 9 is provided with a guide groove 15, and the end of a connecting rod 101 of the needle valve 10 is arranged in the guide groove 15 and can slide relative to the guide groove 15. The guide channel 15 includes a lower horizontal section 150, an upper horizontal section 152, and an intermediate section 151 connecting the lower horizontal section 150 and the upper horizontal section 152. The lower horizontal section 150 as the initial section of the guide groove and the upper horizontal section 152 as the final section have a height difference, so that when the guide groove 15 on the control plate 9 moves horizontally, the needle valve 10 is guided by the guide groove 15 through the connecting rod 101 to move up and down to generate an opening or closing action. In particular, the intermediate section 151 may be formed in a straight line or in a curved line according to the test requirements, so as to control the closing law of the needle valve 10, thereby adjusting the device flow characteristic to the flow characteristic when the target water turbine is started or stopped. In this embodiment, the intermediate segment 151 is an oblique straight line. In particular, the control plate 9 is of an alternative design, and simulation of turbines with different characteristics is achieved by replacing the control plate 9 with guide channels 15 of different line types.
The control panel 9 is further provided with a limiting assembly for limiting the control panel 9 to move horizontally, the limiting assembly comprises an upper pulley 17 and a lower pulley 18 which are fixed on the rack, and the control panel 9 is limited between the upper pulley 17 and the lower pulley 18. Specifically, the rack of the embodiment is a fixed panel 7 fixed by attaching the control panel 9, and the area of the fixed panel 7 is larger than that of the control panel 9, so that the upper edge and the lower edge of the fixed panel 7 both exceed the control panel 9, thereby providing a space for installing the upper pulley 17 and the lower pulley 18. In this embodiment, the upper pulley 17 and the lower pulley 18 are two and the surfaces thereof are in sliding contact with the upper edge surface and the lower edge surface of the control panel 9, and the upper edge surface and the lower edge surface of the control panel 9 are horizontal surfaces. Of course, the frame is not limited to the embodiment disclosed, and other technical solutions are also possible, as long as the control board 9 is installed between the upper and lower pulleys 18 to slide.
In order to further ensure the movement of the control panel 9 along the horizontal direction and the installation reliability with the fixed panel 7, the limiting assembly also comprises a horizontal transverse limiting groove arranged on the control panel 9 and a limiting block arranged on the fixed panel 7; the limiting block penetrates into the limiting groove and is in sliding contact with the wall surface of the limiting groove. The length of the limiting groove is enough to ensure the motion track of the connecting rod 101 of the needle valve 10 in the guide groove 15.
The control system of the present embodiment includes a trigger 6, a front cut switch 4, a rear cut switch 5, and a controller 3. The front circuit breaker 4 and the rear circuit breaker 5 are respectively and correspondingly arranged on the fixed panel 7 above the initial section of the guide groove 15 and the final section of the guide groove 15; the triggering device 6 is arranged between the front and rear cut- off switches 4, 5. The controller 3 is connected with the motor, the front circuit breaker 4 and the controller 3 of the rear circuit breaker 5. Due to the arrangement of the front circuit breaker 4 and the rear circuit breaker 5 in the front and rear of the frame, when the needle valve 10 control board 9 advances to a limiting position, the circuit breakers are triggered and then fed back to the controller 3 to control the starting and stopping of the motor 1, so that the movement range of the needle valve 10 control board 9 is limited, and equipment damage is avoided.
The working principle of the technical scheme is as follows: for example, when the load of the test hydro-generator set needs to be increased from zero to full load, the initial condition is that the tip of the connecting rod of the needle valve 10 rests in the lower horizontal section 150 of the guide channel 15. When the flow rate required by the load increase of the unit is increased, the mechanism drives the guide groove 15 to horizontally move towards the left side through the motor 1, the gear transmission 2 and the spiral telescopic rod 8 to lift the needle valve 10, and the flow rate passing through the volute 12 is increased. The change rule of the flow can be obtained according to the comprehensive characteristic curve of the unit, and the opening of the needle valve 10 is controlled by the curve type guide groove 15 of the control plate 9. Eventually, the unit is fully loaded and the top end of the needle link 101 rests on the upper horizontal section 152 of the needle guide slot 15. The load shedding operation of the water turbine is opposite to the procedure.
It should be noted that the above describes exemplifying embodiments of the invention. It will be understood by those skilled in the art, however, that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. A hydropower station water turbine simulation test device is characterized by comprising a rack, a volute model, a control plate and a control rod; the volute model is arranged between the water channel flow channel and the tail water channel flow channel and comprises a volute body and a needle valve arranged in the volute body; the control rod is connected with the control plate and drives the control plate to reciprocate in the horizontal direction through power provided by the motor; the control panel is provided with a guide groove, and the initial section and the final section of the guide groove have a height difference; the tail end of a connecting rod of the needle valve is arranged in the guide groove and can slide along the guide groove along with the motion of the control plate in a reciprocating mode so as to control the opening or closing of the flow in the volute body.
2. The simulation test device of a hydraulic turbine of a hydropower station of claim 1, wherein the volute model further comprises a flow adjusting ring disposed in the volute body, and the needle valve is disposed in the flow adjusting ring.
3. The simulation test device of the hydraulic turbine of the hydropower station according to claim 1, wherein the control rod is a spiral telescopic rod, and a gear transmission is connected between the control rod and the motor.
4. The simulation test device of a hydraulic turbine of a hydropower station according to claim 1, wherein the guide groove comprises a lower horizontal section, an upper horizontal section and a middle section connecting the lower horizontal section and the upper horizontal section; the middle section is an oblique straight line.
5. The simulation test device of a hydraulic turbine of a hydropower station according to claim 1, wherein the guide groove comprises a lower horizontal section, an upper horizontal section and a middle section connecting the lower horizontal section and the upper horizontal section; the middle section is a curved arc line.
6. The simulation test device of the hydraulic turbine of the hydropower station according to claim 1, wherein the control plate is further provided with a limiting assembly which comprises an upper pulley and a lower pulley fixed on the rack; the upper edge face and the lower edge face of the control panel are horizontal planes, and the control panel is arranged between the upper pulley and the lower pulley, the upper edge face and the lower edge face are in surface sliding contact with the upper pulley and the lower pulley respectively.
7. The simulation test device of the hydraulic turbine of the hydropower station according to any one of claims 1 to 6, wherein the control plate is further provided with a limiting assembly, which comprises a horizontal transverse limiting groove arranged on the control plate and a limiting block arranged on the rack; the limiting block penetrates into the limiting groove and is in sliding contact with the wall surface of the limiting groove.
8. The simulation test device of the hydraulic turbine of the hydropower station according to any one of claims 1 to 6, wherein a control system is further arranged on the control panel and comprises a trigger device, a front circuit breaker and a rear circuit breaker; the front circuit breaker and the rear circuit breaker are respectively and correspondingly arranged on the rack above or below the initial section and the final section of the guide groove; the trigger device is disposed between the front disconnect switch and the rear disconnect switch.
9. The simulation test apparatus of a hydroelectric power station turbine of claim 8, wherein said control system further comprises a controller coupled to said motor, said front disconnect switch and said rear disconnect switch.
10. The simulation test device of a hydraulic turbine of a hydropower station of claim 7, wherein the frame is a fixed panel, the fixed panel is attached to the control panel, and the upper edge and the lower edge of the fixed panel both exceed the upper edge and the lower edge of the control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078299.9A CN113882989A (en) | 2021-09-15 | 2021-09-15 | Simulation test device for hydraulic turbine of hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078299.9A CN113882989A (en) | 2021-09-15 | 2021-09-15 | Simulation test device for hydraulic turbine of hydropower station |
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| Publication Number | Publication Date |
|---|---|
| CN113882989A true CN113882989A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111078299.9A Pending CN113882989A (en) | 2021-09-15 | 2021-09-15 | Simulation test device for hydraulic turbine of hydropower station |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09317623A (en) * | 1996-03-29 | 1997-12-09 | Mitsubishi Electric Corp | Analyzing method of characteristics of hydraulic turbine or pump hydraulic turbine, and electric power plant simulating device for executing its method |
| CN101430358A (en) * | 2008-12-10 | 2009-05-13 | 河南国网宝泉抽水蓄能有限公司 | Head-machine first water pump behavior full-group start test method for pump storage plant |
| CN202451360U (en) * | 2012-01-06 | 2012-09-26 | 天津电气传动设计研究所 | Water turbine volute pressure regulating valve |
| CN205861322U (en) * | 2016-06-21 | 2017-01-04 | 中国电建集团华东勘测设计研究院有限公司 | A kind of hydraulic model test accurately controls unit and opens and closes the device of rule |
| CN108089521A (en) * | 2016-11-22 | 2018-05-29 | 祝凤娟 | A kind of hydraulic machinery test stand electric control system based on WinCC and PLC |
| CN110500230A (en) * | 2019-09-24 | 2019-11-26 | 包萨如拉 | A kind of hydraulic turbine with adjusting and replacement function |
-
2021
- 2021-09-15 CN CN202111078299.9A patent/CN113882989A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09317623A (en) * | 1996-03-29 | 1997-12-09 | Mitsubishi Electric Corp | Analyzing method of characteristics of hydraulic turbine or pump hydraulic turbine, and electric power plant simulating device for executing its method |
| CN101430358A (en) * | 2008-12-10 | 2009-05-13 | 河南国网宝泉抽水蓄能有限公司 | Head-machine first water pump behavior full-group start test method for pump storage plant |
| CN202451360U (en) * | 2012-01-06 | 2012-09-26 | 天津电气传动设计研究所 | Water turbine volute pressure regulating valve |
| CN205861322U (en) * | 2016-06-21 | 2017-01-04 | 中国电建集团华东勘测设计研究院有限公司 | A kind of hydraulic model test accurately controls unit and opens and closes the device of rule |
| CN108089521A (en) * | 2016-11-22 | 2018-05-29 | 祝凤娟 | A kind of hydraulic machinery test stand electric control system based on WinCC and PLC |
| CN110500230A (en) * | 2019-09-24 | 2019-11-26 | 包萨如拉 | A kind of hydraulic turbine with adjusting and replacement function |
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