CN213654931U - BEST small steam turbine of novel million units - Google Patents
BEST small steam turbine of novel million units Download PDFInfo
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- CN213654931U CN213654931U CN202022867633.6U CN202022867633U CN213654931U CN 213654931 U CN213654931 U CN 213654931U CN 202022867633 U CN202022867633 U CN 202022867633U CN 213654931 U CN213654931 U CN 213654931U
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Abstract
The utility model discloses a novel little steam turbine of BEST of million units, including the unit platform, the fixed BEST machine that is provided with in top intermediate position of unit platform, the inside little generator that is provided with of BEST machine, the right-hand member middle part of BEST machine is provided with first connecting pipe, and the right-hand member of first connecting pipe is fixed to be provided with first installation piece. A novel little steam turbine of BEST of million units, through being provided with the BEST machine, the BEST machine drives the water-feeding pump simultaneously, leading pump and little generator, maintain the BEST machine admission governing valve at a reasonable aperture, at the BEST machine drive water-feeding pump, when leading pump, can be wide-open or maintain the great aperture to the BEST machine admission valve, adjust the detent torque of little generator, reduce BEST admission governing valve throttling loss, energy-conservation that has pursued at present has been satisfied, the efficient theory, and the BEST machine will be unnecessary to exert oneself and convert the electric energy into through little generator, supply with the station service power, save station service power rate, reduce the power coal consumption.
Description
Technical Field
The utility model relates to a steam turbine field, in particular to novel little steam turbine of BEST of million units.
Background
The small steam turbine is an important auxiliary equipment of the steam turbine of the thermal power plant, the small steam turbine is usually used for driving a water feeding pump to replace a motor for driving, compared with the motor for driving, the small steam turbine can save a large amount of power for the thermal power plant and reduce the power supply coal consumption, the currently common small steam turbine mainly has two structural forms, one is a pure back pressure type small steam turbine, the exhaust steam of the small steam turbine is led to a certain stage of regenerative heater, and the other is a pure condensing type small steam turbine, and the exhaust steam of the small steam turbine is exhausted to a condenser;
the existing steam turbine has certain defects, firstly, along with the gradual increase of parameters such as unit capacity, pressure and temperature, the small steam turbine has the characteristic of high temperature and pressure in a steam source, when the simple small steam turbine is operated with a pneumatic feed pump, the problem of overhigh small power can occur, the small steam turbine power is reduced by adjusting the opening degree by using a small steam turbine steam inlet adjusting valve in the normal operation process, the steam inlet throttling loss is overlarge, in order to keep the reasonable opening degree of a steam inlet adjusting valve in the small steam turbine operation process, the small steam turbine can not meet the current energy-saving and efficient idea only by driving the pneumatic feed pump, and therefore, the BEST small steam turbine with a novel million units is provided.
Disclosure of Invention
The utility model aims to provide a novel little steam turbine of BEST of million units can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a novel little steam turbine of BEST of million units, includes the unit platform, the fixed BEST machine that is provided with in top intermediate position of unit platform, the inside little generator that is provided with of BEST machine, the right-hand member middle part of BEST machine is provided with first connecting pipe, the fixed first installation piece that is provided with of right-hand member of first connecting pipe, the right side of first installation piece is provided with second installation piece, the through-hole has all been seted up to first installation piece and second installation piece, first installation piece and second installation piece alternate through the through-hole and are provided with the bolt.
Preferably, the right end of the second installation block is fixedly provided with a second connecting pipe, the right end of the second connecting pipe and the right side of the top end of the unit platform are fixedly provided with a high-speed motor, and the front side of the high-speed motor and the right side of the top end of the unit platform are fixedly provided with a converter.
Preferably, the left end of the BEST machine is fixedly provided with a water feeding pump through a diaphragm coupling, the bottom of the water feeding pump is fixedly provided with a fixed table, the fixed table is fixedly arranged on the left side of the top end of the unit table, and the left end of the water feeding pump is movably provided with a third connecting pipe.
Preferably, a speed change gear box is movably mounted on the left side of the third connecting pipe, the speed change gear box is fixedly mounted on the left side of the top end of the unit table, and a fourth connecting pipe is movably mounted on the left side of the speed change gear box.
Preferably, the left side movable mounting of fourth connecting pipe has the front pump, the bottom fixed mounting of front pump has the mounting bracket, mounting bracket fixed mounting is in the top left side of unit's platform.
Preferably, the BEST machine is of a single-cylinder, variable-rotating-speed, reaction-type, single-flow and steam-extraction back-pressure type structure.
Compared with the prior art, the beneficial effects of the utility model are that:
the BEST machine is arranged, the BEST machine drives the water feeding pump, the front pump and the small generator simultaneously, the steam inlet valve of the BEST machine is maintained at a reasonable opening degree, when the BEST machine drives the water feeding pump and the front pump, the steam inlet valve of the BEST machine can be fully opened or maintained at a larger opening degree, after a boiler water feeding flow or rotating speed signal is received, the converter is given a specified speed to supply the converter, the converter performs torque closed-loop control on the small generator, the braking torque of the small generator is adjusted, the throttling loss of the steam inlet valve of the BEST is reduced, the currently pursued energy-saving and efficient idea is met, the BEST machine converts redundant output power into electric energy through the small generator, the electric energy is supplied to a plant, the plant power consumption is saved, and the power supply coal consumption is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of a BEST small steam turbine of a novel million units according to the present invention;
FIG. 2 is an enlarged view of the connection structure between the BEST machine and the high-speed motor of the BEST small steam turbine of the novel million units according to the present invention;
fig. 3 is an enlarged view of the structure of the feed pump and the pre-pump of the BEST small turbine of the novel million units of the present invention.
In the figure: 1. a machine set platform; 2. a BEST machine; 3. a diaphragm coupling; 4. a feed pump; 5. a change speed gear box; 6. a pre-pump; 7. a mounting frame; 8. a third connecting pipe; 9. a fixed table; 10. a first mounting block; 11. a current transformer; 12. a high-speed motor; 13. a bolt; 14. a second mounting block; 15. a first connecting pipe; 16. a second connecting pipe; 17. and a fourth connecting pipe.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1-3, a novel small BEST turbine of million units, including a unit platform 1, a BEST machine 2 is fixedly arranged at the top middle position of the unit platform 1, a small generator is arranged inside the BEST machine 2, a first connecting pipe 15 is arranged in the middle of the right end of the BEST machine 2, a first mounting block 10 is fixedly arranged at the right end of the first connecting pipe 15, a second mounting block 14 is arranged on the right side of the first mounting block 10, through holes are respectively formed in the first mounting block 10 and the second mounting block 14, and bolts 13 are arranged in the first mounting block 10 and the second mounting block 14 through the through holes in an inserting manner.
The fixed second connecting pipe 16 that is provided with of right-hand member of second installation piece 14, the right-hand member of second connecting pipe 16 just is located the top right side fixed mounting of unit platform 1 and has high speed motor 12, the front of high speed motor 12 just is located the top right side fixed mounting of unit platform 1 and has converter 11, the left end of BEST machine 2 has water-feeding pump 4 through 3 fixed mounting of diaphragm coupling, water-feeding pump 4's bottom fixed mounting has fixed station 9, fixed station 9 fixed mounting is on the top left side of unit platform 1, water-feeding pump 4's left end activity is provided with third connecting pipe 8.
The left side movable mounting of third connecting pipe 8 has change gear box 5, change gear box 5 fixed mounting is in the top left side of unit platform 1, change gear box 5's left side movable mounting has fourth connecting pipe 17, the left side movable mounting of fourth connecting pipe 17 has leading pump 6, the bottom fixed mounting of leading pump 6 has mounting bracket 7, mounting bracket 7 fixed mounting is in the top left side of unit platform 1, BEST machine 2 is the single cylinder, variable speed, reaction, single current and takes out vapour back pressure formula structure.
By adopting the technical scheme: the BEST machine 2 is arranged, the BEST machine 2 drives the water feeding pump 4, the front pump 6 and the small generator at the same time, the steam inlet valve of the BEST machine 2 is maintained at a reasonable opening, when the BEST machine 2 drives the water feeding pump 4 and the front pump 6, the steam inlet valve of the BEST machine 2 can be fully opened or maintained at a larger opening, after a boiler water feeding flow or rotating speed signal is received, the converter 11 is given a specified speed to carry out torque closed-loop control on the small generator through the converter 11, the braking torque of the small generator is adjusted, the throttling loss of the steam inlet valve of the BEST machine 2 is reduced, the currently pursued energy-saving and efficient idea is met, and the BEST machine 2 converts redundant output power into electric energy through the small generator to supply power for service, the service power consumption rate is saved, and the power supply coal consumption is reduced.
It should be noted that the utility model relates to a novel million units BEST small steam turbine, when using, BEST machine 2 is connected through diaphragm coupling 3 with feed pump 4, diaphragm coupling 3 can allow the measuring rotor to have great central deviation, centering requirement is low when installing, can eliminate or weaken the transmission of vibration, can compensate the axial displacement of feed pump end rotor cold and hot state simultaneously, use change speed gear box 5 to link to each other between feed pump 4 and the pre-pump 6 in order to reach the purpose of flow balance, BEST machine 2 is single cylinder, variable speed, reaction type, single current and steam extraction back pressure type structure, the unit adopts the whole cycle steam admission, no regulation stage, when BEST machine 2 drives feed pump 4 and pre-pump 6, can be with BEST machine 2 steam admission valve full open or maintain great aperture, after receiving boiler feed water flow or rotational speed signal, give converter 11 through the assigned speed, the converter 11 carries out torque closed-loop control on the small generator, the braking torque of the small generator is adjusted, the rotating speed of the water feeding pump 4 is under the closed-loop control, the converter 11 calculates the feedback rotating speed (or through a speed sensor) by combining with the DCS torque, the adjusting of the rotating speed of the motor is carried out by giving a given torque to the converter 11, the rotating speed of the system tends to the given speed of the system, under the control mode, the system speed always follows the given speed of the system, so that the function of adjusting the system speed is achieved, meanwhile, the braking power of the small generator offsets the residual power between the BEST machine 2 and the water feeding pump 4, because the converter 11 generates reverse torque, the current in the converter 11 reversely flows to the input end of the converter 11, so that the function of energy feedback is achieved, and the energy feedback device is practical.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A novel BEST small steam turbine of million units comprises a unit platform (1), and is characterized in that: the fixed BEST machine (2) that is provided with in top intermediate position of unit platform (1), BEST machine (2) inside is provided with little generator, the right-hand member middle part of BEST machine (2) is provided with first connecting pipe (15), the fixed first installation piece (10) that is provided with of right-hand member of first connecting pipe (15), the right side of first installation piece (10) is provided with second installation piece (14), the through-hole has all been seted up to first installation piece (10) and second installation piece (14), first installation piece (10) and second installation piece (14) are provided with bolt (13) through the through-hole interlude.
2. The new megaturbine block BEST small turbine as claimed in claim 1, wherein: the right-hand member of second installation piece (14) is fixed and is provided with second connecting pipe (16), the right-hand member of second connecting pipe (16) just is located the top right side fixed mounting of unit platform (1) and has high speed motor (12), the front of high speed motor (12) just is located the top right side fixed mounting of unit platform (1) and has converter (11).
3. The new megaturbine block BEST small turbine as claimed in claim 1, wherein: the left end of BEST machine (2) has water feed pump (4) through diaphragm coupling (3) fixed mounting, the bottom fixed mounting of water feed pump (4) has fixed station (9), fixed station (9) fixed mounting is in the top left side of unit platform (1), the left end activity of water feed pump (4) is provided with third connecting pipe (8).
4. The new megaturbine block BEST small turbine as claimed in claim 3, wherein: the left side movable mounting of third connecting pipe (8) has change gear box (5), change gear box (5) fixed mounting is in the top left side of unit platform (1), the left side movable mounting of change gear box (5) has fourth connecting pipe (17).
5. The new million units BEST small steam turbine according to claim 4, wherein: the left side movable mounting of fourth connecting pipe (17) has leading pump (6), the bottom fixed mounting of leading pump (6) has mounting bracket (7), mounting bracket (7) fixed mounting is in the top left side of unit platform (1).
6. The new megaturbine block BEST small turbine as claimed in claim 1, wherein: the BEST machine (2) is of a single-cylinder, variable-rotating-speed, reaction type, single-flow and steam extraction back-pressure type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022867633.6U CN213654931U (en) | 2020-12-03 | 2020-12-03 | BEST small steam turbine of novel million units |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022867633.6U CN213654931U (en) | 2020-12-03 | 2020-12-03 | BEST small steam turbine of novel million units |
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| CN213654931U true CN213654931U (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022867633.6U Active CN213654931U (en) | 2020-12-03 | 2020-12-03 | BEST small steam turbine of novel million units |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431639A (en) * | 2021-07-28 | 2021-09-24 | 华能秦煤瑞金发电有限责任公司 | Novel water feed pump speed regulating device and method |
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2020
- 2020-12-03 CN CN202022867633.6U patent/CN213654931U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431639A (en) * | 2021-07-28 | 2021-09-24 | 华能秦煤瑞金发电有限责任公司 | Novel water feed pump speed regulating device and method |
| CN113431639B (en) * | 2021-07-28 | 2023-09-29 | 华能秦煤瑞金发电有限责任公司 | Water supply pump speed regulating device and method |
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