CN109682249A - A kind of control method of fired power generating unit circulation and the special method of operation - Google Patents
A kind of control method of fired power generating unit circulation and the special method of operation Download PDFInfo
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- CN109682249A CN109682249A CN201910100313.7A CN201910100313A CN109682249A CN 109682249 A CN109682249 A CN 109682249A CN 201910100313 A CN201910100313 A CN 201910100313A CN 109682249 A CN109682249 A CN 109682249A
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- unit
- pump
- water
- power generating
- fired power
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention discloses a kind of fired power generating unit circulation and the control methods of the special method of operation, the system comprises #5 units and #6 unit, the #5 unit and #6 unit include water-cooling tower and two water circulating pumps, it is connected between the #5 unit and the water-cooling tower of #6 unit by connecting pipe, electric hand is installed at the inner hub location of the connecting pipe and moves headstock gear, it is connected between the water-cooling tower and water circulating pump by connecting pipe, liquidometer is installed on the water circulating pump.The present invention, using this method, is implemented " two machines three pump " by optimizing to unit circulation, i.e., two units share three water circulating pump methods of operation, unit net coal consumption rate, station service power consumption rate can be effectively reduced in the case where not changing existing equipment.
Description
Technical field
The invention belongs to fired power generating unit circulation and special method of operation technical fields, and in particular to a kind of thermal motor
The control method of the group special method of operation of circulation.
Background technique
Power plant's extra-supercritical unit and supercritical unit refer to the pressure of working medium in boiler.Working medium in boiler is all
The critical parameters of water, water are: 22.129MPa, 374.15 DEG C；In this pressure and temperature, the density of water and steam is identical
, the critical point of water is just cried, power pressure is just subcritical boiler lower than this pressure in furnace, is exactly super face greater than this pressure
Boundary's boiler, vapor (steam) temperature is not less than 593 DEG C in furnace or steam pressure not less than 31MPa is referred to as ultra supercritical.From international and state
It is interior be completed and for overcritical or extra-supercritical unit the parameter selection situation built, as long as boiler parameter critical point with
On, it is all supercritical unit.
For normal two units when netting operation, circulation can be using a machine two pump (one unit two are followed pump) or one
Machine one pumps (one unit one is followed pump) method of operation, i.e. the unit style method of operation.To cause annual spring and autumn, i.e., the 4-6 month,
The transitional period quantity of circulating water or deficiency (when single pump operation) or surplus (when double pump is run) of the 9-10 month, so that unit is powered
Coal consumption, station service power consumption rate are higher.
Summary of the invention
The purpose of the present invention is to provide a kind of control methods of special method of operation of fired power generating unit circulation, with solution
Annual spring and autumn certainly mentioned above in the background art, i.e. the 4-6 month, the transitional period quantity of circulating water of the 9-10 month or deficiency (single pump
When operation) or it is superfluous (when double pump is run), so that the higher problem of unit net coal consumption rate, station service power consumption rate.
To achieve the above object, the invention provides the following technical scheme:
A kind of fired power generating unit circulation, including #5 unit and #6 unit, the #5 unit and #6 unit include water
Leng Ta and two water circulating pump is connected between the #5 unit and the water-cooling tower of #6 unit by connecting pipe, the connecting tube
Electric hand is installed at the inner hub location in road and moves headstock gear, is connected between the water-cooling tower and water circulating pump by connecting pipe
It connects, liquidometer is installed on the water circulating pump.
A kind of control method of the special method of operation of fired power generating unit circulation, including control any fire as described herein
Motor group circulation, the process the following steps are included:
S1, first confirm that #5,6 unit water circulating pumps operation pump are normal, stand-by pump meets service condition；
S2, confirmation are opened and are got in touch with lock gate hatch between two unit cooling columns；
S3, confirmation close #5,6 units follow pump discharge main pipe communicating door；
S4, starting #5 machine or #6 machine is spare follows pump；
S5, #5 machine or the spare normal operation after following pump startup of #6 machine are checked；
S6, slowly unlatching #5,6 units follow pump discharge main pipe communicating door on the spot；
S7, monitoring #5,6 each parameters of unit circulation are normal, and emphasis is two unit cooling column water levels；
S8, monitoring #5,6 unit vacuum are normal.
Preferably, described in S1-S8, #5,6 units are two 600MW grade supercritical coal units.
Preferably, described in S1-S8, #5,6 units separate unit power between 3000-3500KW.
Preferably, described in S1, #5, two of 6 units follow pump while tripping, spare the following of starting list pump operation unit
Pump.
Preferably, described in S1, #5, two of 6 units follow pump while tripping, spare the following of starting list pump operation unit
Pump.
Preferably, described in S8, #5,6 units three pump upper installation and operation mode and select to switch, normal to distinguish unit
It stops transport and failure stoppage in transit state.
Compared with prior art, the beneficial effects of the present invention are: the present invention is by optimizing unit circulation,
Using this method, implement " two machines three pump ", i.e., two units share three water circulating pump methods of operation, can not change existing set
In the case where standby, unit net coal consumption rate, station service power consumption rate is effectively reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fired power generating unit circulation of the present invention.
In figure: 1, water-cooling tower；2, electric hand moves headstock gear；3, liquidometer；4, water circulating pump.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, carries out to the technical solution in inventive embodiments clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Embodiment 1
Referring to Fig. 1, the present invention provides a kind of fired power generating unit circulation, including #5 unit and #6 unit, #5 unit
Include water-cooling tower 1 and two water circulating pumps 4 with #6 unit, passes through connecting pipe between #5 unit and the water-cooling tower 1 of #6 unit
It connects, electric hand is installed at the inner hub location of connecting pipe and moves headstock gear 2, passes through company between water-cooling tower 1 and water circulating pump 4
Adapter tube road connects, and is equipped with liquidometer 3 on water circulating pump 4.
A kind of control method of the special method of operation of fired power generating unit circulation, including control any fire as described herein
Motor group circulation, method includes the following steps:
S1, first confirm that #5,6,600MW grade supercritical coal unit water circulating pump operation pump are normal, stand-by pump meets
Service condition, #5,6 units separate unit power between 3000-3500KW；
S2, confirmation are opened and are got in touch with lock gate hatch between two unit cooling columns；
S3, confirmation close #5,6 units follow pump discharge main pipe communicating door；
S4, starting #5 machine or #6 machine is spare follows pump；
S5, #5 machine or the spare normal operation after following pump startup of #6 machine are checked；
S6, slowly unlatching #5,6 units follow pump discharge main pipe communicating door on the spot；
S7, monitoring #5,6 each parameters of unit circulation are normal, and emphasis is two unit cooling column water levels；
S8, monitoring #5,6 unit vacuum are normal.
Embodiment 2
Referring to Fig. 1, the present invention provides a kind of fired power generating unit circulation, including #5 unit and #6 unit, #5 unit
Include water-cooling tower 1 and two water circulating pumps 4 with #6 unit, passes through connecting pipe between #5 unit and the water-cooling tower 1 of #6 unit
It connects, electric hand is installed at the inner hub location of connecting pipe and moves headstock gear 2, passes through company between water-cooling tower 1 and water circulating pump 4
Adapter tube road connects, and is equipped with liquidometer 3 on water circulating pump 4.
A kind of control method of the special method of operation of fired power generating unit circulation, including control any fire as described herein
Motor group circulation, method includes the following steps:
S1, first confirm that #5,6,600MW grade supercritical coal unit water circulating pump operation pump are normal, stand-by pump meets
Service condition, #5,6 units separate unit power between 3000-3500KW, #5, two of 6 units follow pump while tripping, starting
The spare of single pump operation unit follows pump；
S2, confirmation are opened and are got in touch with lock gate hatch between two unit cooling columns；
S3, confirmation close #5,6 units follow pump discharge main pipe communicating door；
S4, starting #5 machine or #6 machine is spare follows pump；
S5, #5 machine or the spare normal operation after following pump startup of #6 machine are checked；
S6, slowly unlatching #5,6 units follow pump discharge main pipe communicating door on the spot；
S7, monitoring #5,6 each parameters of unit circulation are normal, and emphasis is two unit cooling column water levels；
S8, monitoring #5,6 unit vacuum are normal.
Embodiment 3
Referring to Fig. 1, the present invention provides a kind of fired power generating unit circulation, including #5 unit and #6 unit, #5 unit
Include water-cooling tower 1 and two water circulating pumps 4 with #6 unit, passes through connecting pipe between #5 unit and the water-cooling tower 1 of #6 unit
It connects, electric hand is installed at the inner hub location of connecting pipe and moves headstock gear 2, passes through company between water-cooling tower 1 and water circulating pump 4
Adapter tube road connects, and is equipped with liquidometer 3 on water circulating pump 4.
A kind of control method of the special method of operation of fired power generating unit circulation, including control any fire as described herein
Motor group circulation, method includes the following steps:
S1, first confirm that #5,6,600MW grade supercritical coal unit water circulating pump operation pump are normal, stand-by pump meets
Service condition, #5,6 units separate unit power between 3000-3500KW, #5, two of 6 units follow pump while tripping, starting
The spare of single pump operation unit follows pump；
S2, confirmation are opened and are got in touch with lock gate hatch between two unit cooling columns；
S3, confirmation close #5,6 units follow pump discharge main pipe communicating door；
While S4, starting #5 machine or #6 machine is spare follows pump, single pump operation unit spare follow pump startup, interlocking close #
5,6 unit recirculated water communicating door；
S5, #5 machine or the spare normal operation after following pump startup of #6 machine are checked；
S6, slowly unlatching #5,6 units follow pump discharge main pipe communicating door on the spot；
S7, monitoring #5,6 each parameters of unit circulation are normal, and emphasis is two unit cooling column water levels；
S8, monitoring #5,6 unit vacuum are normal.
Embodiment 4
Referring to Fig. 1, the present invention provides a kind of fired power generating unit circulation, including #5 unit and #6 unit, #5 unit
Include water-cooling tower 1 and two water circulating pumps 4 with #6 unit, passes through connecting pipe between #5 unit and the water-cooling tower 1 of #6 unit
It connects, electric hand is installed at the inner hub location of connecting pipe and moves headstock gear 2, passes through company between water-cooling tower 1 and water circulating pump 4
Adapter tube road connects, and is equipped with liquidometer 3 on water circulating pump 4.
A kind of control method of the special method of operation of fired power generating unit circulation, including control any fire as described herein
Motor group circulation, method includes the following steps:
S1, first confirm that #5,6,600MW grade supercritical coal unit water circulating pump operation pump are normal, stand-by pump meets
Service condition, #5,6 units separate unit power between 3000-3500KW, #5, two of 6 units follow pump while tripping, starting
The spare of single pump operation unit follows pump；
S2, confirmation are opened and are got in touch with lock gate hatch between two unit cooling columns；
S3, confirmation close #5,6 units follow pump discharge main pipe communicating door；
While S4, starting #5 machine or #6 machine is spare follows pump, single pump operation unit spare follow pump startup, interlocking close #
5,6 unit recirculated water communicating door；
S5, #5 machine or the spare normal operation after following pump startup of #6 machine are checked；
S6, slowly unlatching #5,6 units follow pump discharge main pipe communicating door on the spot；
S7, monitoring #5,6 each parameters of unit circulation are normal, and emphasis is two unit cooling column water levels；
S8, monitoring #5,6 unit vacuum are normal, and #5,6 units three pump upper installation and operation mode and select to switch, to selector-repeater
Group is normal to stop transport and failure stoppage in transit state.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of fired power generating unit circulation, which is characterized in that including #5 unit and #6 unit, the #5 unit and #6 unit
Include water-cooling tower (1) and two water circulating pumps (4), passes through connecting tube between the #5 unit and the water-cooling tower (1) of #6 unit
Road connects, and electric hand is equipped at the inner hub location of the connecting pipe and moves headstock gear (2), the water-cooling tower (1) and circulation
It is connected between water pump (4) by connecting pipe, liquidometer (3) is installed on the water circulating pump (4).
2. a kind of control method of the special method of operation of fired power generating unit circulation, including controlling described in claim 1 be somebody's turn to do
Fired power generating unit circulation, this approach includes the following steps,
S1, first confirm that #5,6 unit water circulating pumps operation pump are normal, stand-by pump meets service condition；
S2, confirmation are opened and are got in touch with lock gate hatch between two unit cooling columns；
S3, confirmation close #5,6 units follow pump discharge main pipe communicating door；
S4, starting #5 machine or #6 machine is spare follows pump；
S5, #5 machine or the spare normal operation after following pump startup of #6 machine are checked；
S6, slowly unlatching #5,6 units follow pump discharge main pipe communicating door on the spot；
S7, monitoring #5,6 each parameters of unit circulation are normal, and emphasis is two unit cooling column water levels；
S8, monitoring #5,6 unit vacuum are normal.
3. the control method of the special method of operation of fired power generating unit circulation according to claim 3, which is characterized in that
It is described in S1-S8, #5,6 units be two 600MW grade supercritical coal units.
4. the control method of the special method of operation of fired power generating unit circulation according to claim 3, which is characterized in that
It is described in S1-S8, #5,6 units separate unit power between 3000-3500KW.
5. the control method of the special method of operation of fired power generating unit circulation according to claim 3, which is characterized in that
It is described in S1, #5, two of 6 units follow pump while tripping, the spare of starting list pump operation unit follows pump.
6. the control method of the special method of operation of fired power generating unit circulation according to claim 3, which is characterized in that
It is described in S4, while single pump operation unit spare follows pump startup, interlocking close #5,6 unit recirculated water communicating doors.
7. the control method of the special method of operation of fired power generating unit circulation according to claim 3, which is characterized in that
Described #5,6 units three pump upper installation and operation mode and select to switch in S8, and to distinguish, unit is normally stopped transport and failure is stopped transport
State.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910100313.7A CN109682249A (en) | 2019-01-31 | 2019-01-31 | A kind of control method of fired power generating unit circulation and the special method of operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910100313.7A CN109682249A (en) | 2019-01-31 | 2019-01-31 | A kind of control method of fired power generating unit circulation and the special method of operation |
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| CN109682249A true CN109682249A (en) | 2019-04-26 |
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| CN201910100313.7A Pending CN109682249A (en) | 2019-01-31 | 2019-01-31 | A kind of control method of fired power generating unit circulation and the special method of operation |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1324929A (en) * | 1971-11-15 | 1973-07-25 | Magna Energy Inc | Geothermal energy system |
| JPH07200069A (en) * | 1993-12-28 | 1995-08-04 | Toshiba Corp | Cooling water controller |
| CN103713607A (en) * | 2013-12-30 | 2014-04-09 | 中国大唐集团科学技术研究院有限公司 | Circulating water system for thermal power plant and operation method thereof |
-
2019
- 2019-01-31 CN CN201910100313.7A patent/CN109682249A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1324929A (en) * | 1971-11-15 | 1973-07-25 | Magna Energy Inc | Geothermal energy system |
| JPH07200069A (en) * | 1993-12-28 | 1995-08-04 | Toshiba Corp | Cooling water controller |
| CN103713607A (en) * | 2013-12-30 | 2014-04-09 | 中国大唐集团科学技术研究院有限公司 | Circulating water system for thermal power plant and operation method thereof |
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Application publication date: 20190426 |
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