CN212296694U - Miniature hydraulic residual pressure generating device - Google Patents
Miniature hydraulic residual pressure generating device Download PDFInfo
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- CN212296694U CN212296694U CN202020570079.2U CN202020570079U CN212296694U CN 212296694 U CN212296694 U CN 212296694U CN 202020570079 U CN202020570079 U CN 202020570079U CN 212296694 U CN212296694 U CN 212296694U
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- 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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Abstract
The utility model relates to a miniature water conservancy residual pressure power generation facility, it is responsible for and the pipeline formula hydraulic turbine including supplying water, the water supply is responsible for the water supply valve's the end of intaking and the water outlet end are respectively through bypass inlet tube, intake valve and bypass outlet pipe, the water outlet valve water inlet and the delivery port of connecting the pipeline formula hydraulic turbine, the generator of the pipeline formula hydraulic turbine inserts the electric wire netting through the adaptive control regulator. The utility model discloses can guarantee under arbitrary flow, arbitrary drop, arbitrary frequency, arbitrary phase place, arbitrary voltage, successfully grid-connected electricity generation, the loss is extremely low.
Description
Technical Field
The utility model relates to a water conservancy residual pressure electricity generation technical field especially relates to a miniature water conservancy residual pressure power generation facility.
Background
As is known, electric energy is an important secondary energy source, and is applied to various aspects of modern society, hydroelectric power generation is the cleanest energy source, China is a big power generation country, 80 percent of China is thermal power generation, and the thermal power generation burns a large amount of coal and petroleum every day and pollutes the environment. At present, the situation of energy is severe, especially the world energy crisis, the situation of electric energy relying on primary energy such as coal, petroleum and the like is at risk, and the electricity is seriously in shortage. Therefore, reasonable power utilization, electricity saving and the conversion of some waste and idle energy into electric energy have become important in energy saving and consumption reduction.
In mines and metallurgical enterprises, the water consumption is generally large. In addition, most enterprises have a large natural fall between the water source and the water using link, or the pressure of the water pipeline is too high, and the pressure reduction link wastes the redundant energy. Therefore, the existing water energy utilization link has larger energy sources to be idle and has a large recycling space.
At present, the development of large and medium-sized hydraulic resources is almost exhausted in China, as in western developed countries. Thus, micro hydraulic residual pressure power generation has been identified as one of the important ways to develop and utilize clean renewable energy in the future. Therefore, a popular route for generating electricity by using "micro hydropower" with an installed capacity of 1 to 500KW using an existing available water route has been proposed in japan, germany, and the like, and micro hydropower equipment is installed on an existing water delivery pipeline to recycle excess water pressure energy in the pipeline.
Most hydroelectric equipment of hydroelectric generating set manufacturers are directly purchased on the market for excess pressure power generation and energy conservation, the reason is that the use scene, water diversion and drainage mode, power generation requirement, operation management and the like of a hydropower station are different from the requirements of factory production and energy conservation, the hydropower station equipment is directly applied to industrial backwater energy conservation, the requirements are not matched and coordinated with factory production, the hydropower station equipment is also a place with a great amount of water pressure, water head and flow and huge power generation potential, although the hydroelectric generating set is installed, the generated energy is far away from the expected generated energy, and the hydroelectric generating set can only be abandoned and stopped in some cases. Most of the devices can not meet the safety or technical requirements of the system and are forced to be dismantled.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides a can guarantee under arbitrary flow, arbitrary drop, arbitrary frequency, arbitrary phase place, arbitrary voltage, the electricity generation of successfully being incorporated into the power networks, the miniature water conservancy residual pressure power generation facility that the loss is extremely low.
The utility model provides a technical scheme that its technical problem adopted is: the miniature hydraulic residual pressure power generation device comprises a water supply main pipe and a pipeline type water turbine, wherein the water inlet end and the water outlet end of a water supply valve of the water supply main pipe are respectively connected with the water inlet and the water outlet of the pipeline type water turbine through a bypass water inlet pipe, a water inlet valve, a bypass water outlet pipe and a water outlet valve, and a power generator of the pipeline type water turbine is connected into a power grid through a self-adaptive control regulator.
In a preferred embodiment of the present invention, a three-phase bridge feedback/rectification IGBT loop is connected between the generator and the grid, the three-phase bridge feedback/rectification IGBT loop is connected to the capacitor of the dc bus, and the adaptive control regulator is connected to the dc bus.
The utility model provides a miniature water conservancy excess pressure power generation facility's a preferred embodiment, the adaptive control regulator include the power strip and with the main control unit that the power strip is connected and with wave plate, parameter control system, fuzzy controller that the main control unit is connected send out the wave plate, parameter control system, fuzzy controller connect and send out the wave plate, send out wave plate connection parameter control system.
The utility model provides a miniature water conservancy excess pressure power generation facility's a preferred embodiment, send out the inboard sampling unit that is equipped with of ripples, the sampling unit is sampled and is sampled to the electric current and the voltage of electric wire netting side and to the electric current and the voltage of load motor side, the fuzzy controller is connected to the sampling unit.
In the utility model provides a miniature water conservancy residual pressure power generation facility's a preferred embodiment, the sampling unit still is connected with direct current voltage sampling board, direct current bus is connected to direct current voltage sampling board.
The utility model provides a miniature water conservancy excess pressure power generation facility's a preferred embodiment, the sampling unit still connects protection circuit in the ripples board sends out, with main control unit communication connection.
The utility model provides a miniature water conservancy excess pressure power generation facility's a preferred embodiment, the drive is connected to parameter control system the drive unit of generator, be equipped with protection circuit in the drive unit, protection circuit is connected with optoelectronic coupler.
The utility model provides a miniature water conservancy excess pressure power generation facility's a preferred embodiment, parameter control system still includes analog quantity/digital quantity control panel and keeps apart synchronous detection operational circuit, analog quantity/digital quantity control panel is connected drive unit's protection circuit, analog quantity/digital quantity control panel is connected and is kept apart synchronous detection operational circuit.
The utility model provides a miniature water conservancy excess pressure power generation facility's a preferred embodiment, the communication board is still connected to the master control unit, electric state operation display screen and generating state operation display screen are connected to the communication board.
Compared with the prior art, the utility model provides a miniature water conservancy residual pressure power generation facility's beneficial effect is:
the utility model designs the residual pressure generator set into a bypass structure connected in parallel with a water supply main pipe, the water supply can be adjusted and controlled according to the system requirement, and the problem of potential safety hazard to a circulating water system when the water turbine fails in a mode of directly designing and installing the generator set to replace a pressure reducing valve at a pressure reducing section with overhigh pressure of a water pipeline is solved;
the water turbine is controlled by the self-adaptive control regulator, the advanced water turbine control technology and the unique power generation control technology are adopted, the power generation capacity can be automatically adjusted according to water pressure and water flow, the successful grid-connected power generation can be ensured under any flow, any fall, any frequency, any phase and any voltage, and the loss is extremely low;
and thirdly, the self-adaptive control regulator can also monitor parameters such as voltage, current, frequency, power, generated energy and the like in real time, can automatically run in a grid-connected mode, has a perfect control protection function and realizes unattended operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural diagram of a micro hydraulic residual pressure power generation device provided by the present invention;
fig. 2 is a wiring diagram of the hydraulic generator connected to the power grid;
FIG. 3 is an access circuit diagram of a three-phase bridge feedback/rectifying IGBT loop;
FIG. 4 is a wiring and schematic diagram of the adaptive control regulator;
FIG. 5 is a wiring diagram of the sampling unit;
fig. 6 is a wiring diagram of the communication board;
FIG. 7 is a digital quantity board wiring diagram of an analog quantity/digital quantity control board;
fig. 8 is an analog quantity board wiring diagram of the analog quantity/digital quantity control board.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
Referring to fig. 1, the micro hydraulic residual pressure power generation device includes a main water supply pipe 12 and a pipeline type water turbine 11, a water inlet end and a water outlet end of a water supply valve 13 of the main water supply pipe 12 are respectively connected with a water inlet and a water outlet of the pipeline type water turbine 11 through a bypass water inlet pipe 14, a water inlet valve 16, a bypass water outlet pipe 15 and a water outlet valve 17, the water supply valve 13, the water inlet valve 16 and the water outlet valve 17 are preferably electric butterfly valves, so that the water turbine is convenient to maintain, and a generator 18 of the pipeline type water turbine 11 is connected to a power grid through an adaptive control regulator 20.
This embodiment is responsible for the side at the water supply and designs a bypass, will supply water and introduce the pipeline formula hydraulic turbine, and the drive hydraulic turbine does work, then leads back water supply and is responsible for with rivers, and hydraulic turbine drive generator electricity generation, and the electricity generation is incorporated into the electric wire netting of mill, replaces the power consumption of former part commercial power, reaches the effect of practicing thrift the electric energy, adaptive control regulator is used for according to water pressure, discharge automatically regulated generating capacity.
The generator is connected to a power frequency power grid through the self-adaptive control regulator, so that the motor can work in an electric state and can also work in a power generation state. When the water pressure is insufficient and the generator cannot work, the self-adaptive control regulator enables the generator to operate in an electric state; when the water pressure is sufficient, the water turbine drags the generator to operate, redundant energy is transmitted to the self-adaptive control regulator in a power generation mode, the energy is fed back to a power grid, and the power generation work of the generator is achieved.
Preferably, the generator 18 of the present embodiment is an asynchronous generator conforming to national standards, and can be easily and directly connected to the grid.
Preferably, the pipeline-type water turbine 11 of the present embodiment adopts a rear-axle-extending horizontal structure, and the water turbine is composed of a machine body, a water outlet pipe, a runner, a main shaft, a bearing seat, a water-lubricated bearing, a tapered roller bearing, a water seal, a gland and a connecting piece.
The concrete structure is as follows: the fixed guide vane is arranged in the machine body, the water turbine uses the fixed guide vane to guide water to enter the rotating wheel, the front end of the rotating wheel adopts a water lubrication bearing to support the main shaft, and uses reverse thread to seal water, a small amount of water leakage can lubricate the bearing and flows out of the water turbine through a drain pipe on the side surface of the machine body, the water turbine can be discharged into a water pool of a production workshop, the rear end of the rotating wheel is a set of 31310 tapered roller bearing to support the main shaft and bear water thrust, rubber water seal water and dust are arranged in front of the tapered roller bearing, the main shaft adopts reverse thread and water seal water, a small amount of water leakage can flow out of the water turbine through a front hole of. The main shaft of the water turbine is connected with a generator through a coupler.
In the embodiment, a bypass structure is adopted, and the following can be referred to for the power generation amount calculation mode:
by knowing and surveying the water supply, the elevation of the upstream water supply is 583 meters, the elevation of the water supply flowing into the plant floor is 529 meters, the water supply outlet is 12 meters above the plant floor, the estimated production pipeline loss is 15 meters, the maximum recoverable pressure is 27 meters, and the water supply flow is 13500 tons/day, namely 0.156m3S, deducting 150 tons of high-pressure water/h 0.042m3And/s, available flow rate is 0.156-0.042 ═ 0.114m3/s。
And (3) calculating the generated energy:
according to the energy conversion efficiency of the water turbine being 78%, the generator efficiency being 93%, the water head range that the water turbine can utilize is 20 ~ 27m, hydroelectric set's the output is:
efficiency of the 9.8 head flow turbine generator efficiency
＝9.8*(20～27)*0.114*78％*93％＝16～22kw。
Example two
Referring to fig. 2, fig. 3 and fig. 4, based on the first embodiment, a three-phase bridge feedback/rectification IGBT loop 21 is connected between the generator 18 and the power grid, the three-phase bridge feedback/rectification IGBT loop 21 is connected to a capacitor C6 of the dc bus, and the adaptive control regulator 20 is connected to the dc bus.
The three-phase input of the embodiment is connected with a direct current bus capacitor through a three-phase bridge feedback/rectification IGBT loop, and the direct current bus voltage outputs a PWM waveform through an H bridge formed by IGBTs; in the electric mode, three-phase input is subjected to rectification filtering through a three-phase bridge feedback/rectification IGBT loop and then is provided for a direct-current bus energy support; in the generating mode, the three-phase input feeds back the energy of the direct current bus to the power grid through a three-phase bridge feedback/rectification IGBT loop.
Specifically, based on the first embodiment and/or the second embodiment, referring to fig. 4, the adaptive control regulator 20 of this embodiment includes a power board, a main control unit connected to the power board, a wave-sending board connected to the main control unit, a parameter adjusting system, and a fuzzy controller, where the fuzzy controller is connected to the wave-sending board, and the wave-sending board is connected to the parameter adjusting system.
EXAMPLE III
Based on the above embodiments, as shown in fig. 4 and 5, a sampling unit is arranged in the wave-generating plate of this embodiment, the sampling unit samples current and voltage on the power grid side and samples current and voltage on the load motor (generator) side, and the sampling unit is connected with the fuzzy controller to implement fuzzy intelligent high-precision control and logic operation on the acquired signals.
The sampling unit of this embodiment is responsible for collecting the electric wire netting information, including that electric wire netting side current sampling is used as overcurrent protection, electric wire netting side voltage sampling is used as excessive pressure, undervoltage, unbalanced three phase protection, load motor side current sampling is used as overcurrent protection, load motor side voltage adopts and is used as excessive pressure, undervoltage, unbalanced three phase protection.
Specifically, the wave generating plate is provided with a DSP chip, a control program of the parameter adjusting system is written into the DSP chip, the control program mainly has the function of controlling a generator of the water turbine to generate the same voltage according to the frequency, the amplitude and the phase of the voltage of the power grid, and the current and the power are controlled according to the water flow change.
Example four
Based on the third embodiment, the sampling unit of this embodiment is further connected to a dc voltage sampling plate, and the dc voltage sampling plate is connected to a dc bus, as shown in fig. 5. The voltage sampling of the direct current bus is used for PID calculation of the main control unit during electric and power generation energy feedback and direct current overvoltage protection.
Preferably, the sampling unit is further connected to a protection circuit in the wave plate, and is in communication connection with the main control unit, as shown in fig. 5.
EXAMPLE five
Based on the above embodiment, the parameter adjusting system of this embodiment connects the drive unit that drives the generator, be equipped with protection circuit in the drive unit, protection circuit is connected with photoelectric coupler.
Preferably, as shown in fig. 4, the parameter adjusting system further includes an analog/digital control board and an isolated synchronous detection operation circuit, the analog/digital control board is connected to the protection circuit of the driving unit, and the analog/digital control board is connected to the isolated synchronous detection operation circuit. The connection wiring of the analog quantity board is shown in fig. 8, and the connection wiring of the digital quantity board is shown in fig. 7.
Preferably, as shown in fig. 6, the main control unit is further connected to a communication board, and the communication board is connected to the electric state operation display screen and the power generation state operation display screen.
According to a synchronous rotating speed calculation formula of the three-phase alternating current asynchronous generator: when n0 is 60 xf/r (f-power frequency, r-generator pole pair number), it can be seen that the synchronous speed of the generator is completely determined by the three-phase ac power frequency. When the rotation speed of the motor rotor is not changed, the power supply frequency of the motor is changed, so that the motor can work in an electric or power generation state. And controlling slip of the motor to control output torque. Through the adjustment of the output power frequency of the self-adaptive control regulator and the adjustment of the water inflow of the water turbine, the generator can be randomly switched from an electric state to a power generation state, and meanwhile, the speed of the generator can be flexibly adjusted.
When the water pressure is excessive, the torque required by the driving mechanical system is gradually replaced by the output torque of the water turbine, the output torque of the generator is changed from Mn to-Mn, and the generator is gradually changed from an electric state to a power generation state. At the moment, the self-adaptive control regulator is also converted from a power output state to an energy feedback state, three-phase alternating current with any frequency sent by the generator is fed back to 50Hz power frequency electricity, undisturbed grid connection of the generator and a power grid is achieved, the self-adaptive control regulator feeds back the power generation power of the motor to the 50Hz power grid, the control circuit accurately feeds back the energy of the generator to the power grid by detecting input voltage information in real time, no impact exists in switching control of grid connection feedback, and undisturbed grid connection feedback is achieved really.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a miniature water conservancy residual pressure power generation facility which characterized in that: the water supply system comprises a water supply main pipe and a pipeline type water turbine, wherein the water inlet end and the water outlet end of a water supply valve of the water supply main pipe are respectively connected with the water inlet and the water outlet of the pipeline type water turbine through a bypass water inlet pipe, a water inlet valve, a bypass water outlet pipe and a water outlet valve, and a generator of the pipeline type water turbine is connected into a power grid through a self-adaptive control regulator.
2. The miniature hydraulic residual pressure power generation device according to claim 1, wherein: a three-phase bridge feedback/rectification IGBT loop is connected between the generator and the power grid, the three-phase bridge feedback/rectification IGBT loop is connected to a capacitor of the direct-current bus, and the self-adaptive control regulator is connected to the direct-current bus.
3. The miniature hydraulic residual pressure power generation device according to claim 1, wherein: the self-adaptive control regulator comprises a power panel, a main control unit connected with the power panel, a wave sending plate connected with the main control unit, a parameter regulating system and a fuzzy controller, wherein the fuzzy controller is connected with the wave sending plate, and the wave sending plate is connected with the parameter regulating system.
4. The miniature hydraulic residual pressure power generation device according to claim 3, wherein: the wave generating plate is internally provided with a sampling unit, the sampling unit samples the current and the voltage of the power grid side and samples the current and the voltage of the load motor side, and the sampling unit is connected with a fuzzy controller.
5. The miniature hydraulic residual pressure power generation device according to claim 4, wherein: the sampling unit is also connected with a direct-current voltage sampling plate, and the direct-current voltage sampling plate is connected with a direct-current bus.
6. The miniature hydraulic residual pressure power generation device according to claim 4, wherein: the sampling unit is also connected with a protection circuit in the wave-transmitting plate and is in communication connection with the main control unit.
7. The miniature hydraulic residual pressure power generation device according to claim 3, wherein: the parameter adjusting system is connected with a driving unit for driving the generator, a protection circuit is arranged in the driving unit, and the protection circuit is connected with a photoelectric coupler.
8. The miniature hydraulic residual pressure power generation device according to claim 7, wherein: the parameter adjusting system also comprises an analog quantity/digital quantity control board and an isolation synchronous detection operation circuit, wherein the analog quantity/digital quantity control board is connected with the protection circuit of the driving unit, and the analog quantity/digital quantity control board is connected with the isolation synchronous detection operation circuit.
9. The micro hydraulic residual pressure power generation device according to any one of claims 3 to 8, characterized in that: the main control unit is further connected with a communication board, and the communication board is connected with an electric state operation display screen and a power generation state operation display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020570079.2U CN212296694U (en) | 2020-04-16 | 2020-04-16 | Miniature hydraulic residual pressure generating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020570079.2U CN212296694U (en) | 2020-04-16 | 2020-04-16 | Miniature hydraulic residual pressure generating device |
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| CN212296694U true CN212296694U (en) | 2021-01-05 |
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