CN103292383A - Operational control method of circulating water heat supply unit - Google Patents
Operational control method of circulating water heat supply unit Download PDFInfo
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- CN103292383A CN103292383A CN2013102060977A CN201310206097A CN103292383A CN 103292383 A CN103292383 A CN 103292383A CN 2013102060977 A CN2013102060977 A CN 2013102060977A CN 201310206097 A CN201310206097 A CN 201310206097A CN 103292383 A CN103292383 A CN 103292383A
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Abstract
The invention relates to an operational control method of a circulating water heat supply unit. The method includes: monitoring parameter variation and controlling the unit; monitoring parameter variation of a lower-pressure cylinder part of a turbine by comparing the parameters under high-back-pressure heat supply with those under pure condensation; controlling heat supply network parameters, controlling a pneumatic circulating water pump, controlling low-pressure differential expansion, and controlling middle-pressure steam discharge parameters. By the reasonable steps of the method, operational control of the high-back-pressure circulating water heat supply unit is achieved to solve the problems that related methods are complex in operation and high in implementation cost and overcome the defects of high investment cost, low energy-saving and economical benefits, poor field technical modification adaptability and poor safety reliability, and the requirements of actual conditions can be satisfied.
Description
Technical field
The invention belongs to circulating water heating unit control technology field, relate to a kind of operation control operation method of circulating water heating unit, relate in particular to a kind of operation control operation method that can realize large tracts of land, big flow high back pressure circulating water heating unit.
Background technology
At present, the economic of China increases fast, the resource full-scale development, and every construction obtains great achievement, but has also paid huge resource and environmental cost simultaneously for this reason.Along with the contradiction of economic development and resource environment is sharp-pointed day by day, the phenomenon of air pollution and shortage of resources also becomes increasingly conspicuous, and becomes the severeest now topic.This situation and existing irrationality of the economic structure, extensive pattern of economic growth are directly related.The related request of clear and definite in " 12 " planning " promote production of energy and utilize mode to change "; adhere to saving preferential, base on our country, diverse development, protection environment; adjust to optimize energy resource structure, make up the modern energy industry system of safety, stable, economic, cleaning.Chinese Government has also made serious promise to the world: the reduction of discharging target to the year two thousand twenty China is carbon emission decline 40-45%.Therefore, vigorously advocate energy-saving and cost-reducingly, actively pushing forward with energy-conservation is that the energy-saving and cost-reducing research and extension of the bigger thermoelectricity enterprise implement of new equipment, new technology, new technology, the especially energy input of main target is imperative.
In addition, along with improving constantly of living standards of the people, area of heat-supply service constantly obtains exploitation, heating load constantly increases, as the heat supply work of one of government's " people's livelihood " engineering, relate to huge numbers of families' quality of life, obtain day by day paying attention to, become the good exploration that ensures reliability of heat-supply system so develop new heat supply process, have great social significance.China's heat supply present situation is based on extraction for heat supply and little unit low vacuum back pressure heat supply process at present, the minority region has and utilizes earth source heat pump to implement cooling and heat supply, in addition, because the continuous expansion of area of heat-supply service and scrap build lag behind, the boiler heat supplying mode that occupies a narrow space still exists, this heat-supplying mode not only environmental pollution is serious, and the economy extreme difference.In addition, though the heat supply of large-scale unit back pressure is current better heat-supplying mode, Yun Hang unit only has an example in this way, and just rests in the disposable transformation that low pressure rotor and corresponding dividing plate carry out, cause non-heat supply phase economy extreme difference, make annual economic benefit unsatisfactory.Also have, extraction for heat supply is to use maximum heat-supplying modes at present, the low and big phenomenon of cold source energy of utilization ratio but its existence is drawn gas.In addition, though little unit low vacuum back pressure heat supply process cold source energy is zero, but because little unit operation parameter is lower, generation load and boiler caloric receptivity ratio are less, limited generation load, economic benefit is still undesirable, because little unit heat capacity is limited, can't satisfy extensive heat demand simultaneously.For this reason, needing a kind of cold source energy minimum of research and development, generation load and the boiler ratio heat supply mode higher, that satisfy extensive heat demand simultaneously that recepts the caloric is the task of top priority.Prove that according to theory and practice the back pressure heat supply of big unit high parameter can achieve the above object.Although there is more technical barrier, by inquiring into research, the creationary proposition " the two back pressure birotors of low pressure (LP) cylinder exchange " i.e. be the imagination of " pure condensate-back pressure double-mode " heat supply process.
At present; the cogeneration of heat and power cutting edge technology is up to purpose to realize cold source energy for " zero " and generation load and boiler caloric receptivity ratio; following five kinds of modes are roughly arranged: the preposition heat supply unit of (1) generator: the preposition heat supply unit of generator is the novel thermoelectricity co-generating heat supplying type of introducing at present; heating period can realize that cold source energy is " zero "; heat supply and non-heat supply season do not switch and need shut down; remarkable in economical benefits, the security reliability height.But because of on-the-spot arrangement constraints, be not suitable for the transformation of existing unit, heating period reduces to some extent because of steam turbine low-pressure part generation load out of service simultaneously.(2) low pressure rotor optical axis intermediate pressure cylinder direct-furnish technology: low pressure rotor optical axis intermediate pressure cylinder direct-furnish technology, be that the heating period low pressure rotor is replaced by optical axis, the intermediate pressure cylinder steam discharge can realize like this that all for heat supply cold source energy is " zero ", the expense of investment for trnasforming urban land simultaneously is low, and energy-saving effect is remarkable.But higher because of intermediate pressure cylinder steam discharge parameter, make the generation load restriction more, and annual need the shutdown carried out the replacing of rotor.(3) remove the exhaust stage blade heat supply process: final stage defoliation chip technology removes last one-level or two grade blades at heating period, improves back pressure of condenser, has realized that high back pressure heat supply and cold source energy are " zero ", and energy-saving effect is remarkable.But annual the needs shuts down the replacing blade and carries out dynamic balance running, and maintenance duration is longer, and recondition expense is higher relatively.(4) low pressure rotor is transformed heat supply: low pressure (LP) cylinder high back pressure renovation technique is exactly by changing static cascade, moving blades, blade tip seal, exhaust stage blade and change the realization of low pressure flow passage progression to the transformation that unit carries out, making the unit operation back pressure be higher than pure condensate operating mode back pressure.It is " zero " that low pressure rotor is transformed the heating period cold source energy, and improvement expenses is lower, and energy-saving effect is remarkable, and heat supply phase and non-heat supply phase need not to shut down switches.But only be disposable transformation that passage components such as low pressure rotor and dividing plate are carried out to improve the unit back pressure, cause the non-heat supply phase less economical, particularly summer, the generation load influence was bigger.(5) heat pump great temperature difference heat supply technology: heat pump great temperature difference heat supply technology heating period, heat pump is arranged in the secondary heat exchange station in a large number, be that power realize to reduce the heat supply network return water temperature by high-temperature water, can realize that cold source energy is " zero ", under the situation of not carrying out the heat supply extending capacity reformation, can enlarge area of heat-supply service, the security reliability height, energy-saving effect is remarkable.But have one-time investment expense height, big, problems such as the later maintenance workload is big, service life of equipment is relatively short take up room.
By the comparison to above-mentioned various heat supply cutting edge technologies, at extensive district heating, press for the technology that a kind of investment cost is few, the generation load restriction is relatively little, energy-conservation and economic benefit big, site technology transformation adaptability is strong, security reliability is high.
Application number is " 201110324036.1 ", application publication number is " CN102506451A ", the Chinese invention patent application that name is called " co-generation unit and the method that comprise wind-powered electricity generation and gas Combined Cycle Unit " discloses a kind of dispatching method that comprises the co-generation unit of wind-powered electricity generation and gas Combined Cycle Unit, comprises step: measure supply side data and user's side data; The generated output that calculates the gas Combined circulation of regulating the back gas Combined Cycle Unit is exerted oneself with heat, the heat of the heating boiler of gas Combined Cycle Unit is exerted oneself, user different heat pump power consumption and heating loads constantly.Though this method can realize the scheduling controlling of power system to a certain extent, but because its heat and power supply at extensive zone, still there is the problem that investment cost is bigger, energy-conservation and economic benefit is less and the unit operation method of controlling operation thereof is loaded down with trivial details, thereby exist site technology to transform the relatively poor and relatively poor defective of security reliability of adaptability, be difficult to satisfy the needs of actual conditions.
Application number is " 200610128242.4 ", publication number is " CN101191682A ", the Chinese invention patent application that name is called " a kind of heat pump set cool-heat combined supply synchronous operation devices and methods therefor " discloses a kind of heat pump set cool-heat combined supply synchronous operation method, it is divided into two groups with several source pump, two groups quantity equates or does not wait that the evaporimeter of two groups of source pump, condenser and circulation line thereof fill import by cold and hot matchmaker and be full of hot and cold medium in advance; And the refrigerating capacity of producing by differentiation arranges step greater than with less than heating load the time.Though this method can utilize the source pump of arranging in groups to freeze and heat supply, realize heat pump set system refrigeration and heat supply function, but because this method exists complex operation step and the bigger problem of implementation cost, so still there is the defective that investment cost is bigger, energy-conservation and economic benefit is less, site technology transformation adaptability is relatively poor and security reliability is relatively poor in it, be difficult to satisfy the needs of actual conditions equally.
On the whole, existing relevant circulating water heating unit control technology, operation control operation method specific to present circulating water heating unit, they are many only to be the scheduling controlling that has realized power system to a certain extent, or realized that to a certain extent source pump is freezed and heat supply, but these methods of prior art exist complex operation step and the bigger problem of implementation cost more, so exist investment cost bigger, energy-conservation and economic benefit is less, site technology is transformed the relatively poor and relatively poor defective of security reliability of adaptability, is difficult to satisfy the needs of actual conditions.
Summary of the invention
The objective of the invention is to, a kind of operation control operation method of circulating water heating unit is provided, it is by controlling the operation that can realize large tracts of land, big flow high back pressure circulating water heating unit, solve the existing complex operation step of correlation technique and the bigger problem of implementation cost in the prior art, with and existing investment cost is bigger, energy-conservation and economic benefit is less, site technology is transformed the defective that adaptability is relatively poor and security reliability is relatively poor, thereby satisfy the needs of actual conditions.
For achieving the above object, the operation control operation method that a kind of circulating water heating unit is provided of the present invention may further comprise the steps: the variation of monitored parameter and the control of unit.
Preferably, the step of the variation of described monitored parameter comprises: under high back pressure heat supply operating mode, the parameter of monitoring turbine low pressure (LP) cylinder part is with respect to the variation under the pure condensate operating mode.
In above arbitrary scheme, preferably, in the step of the variation of described monitored parameter, monitor the variation of the vacuum parameter generation of condenser under high back pressure heat supply operating mode and the pure condensate operating mode.
In above arbitrary scheme preferably, in the step of the variation of monitored parameter, under high back pressure heat supply operating mode and pure condensate operating mode, the vacuum parameter of condenser is changed, and described condenser vacuum is reported to the police and the unit tripping value is become " 46.3kPa ,-41.3kPa " respectively by " 86.6kPa ,-79.6kPa " under the pure condensate operating mode.
In above arbitrary scheme preferably, in the step of the variation of described operation monitoring parameter, the vacuum parameter of condenser under high back pressure heat supply operating mode and the pure condensate operating mode is changed, the recirculated water return water temperature is monitored, when finding temperature anomaly, carry out the preparation of regulating vacuum.
In above arbitrary scheme, preferably, in the step of the variation of operation monitoring parameter, the interlock working value of condenser vacuum and bypass is changed.
More preferably, in the step of the variation of operation monitoring parameter, the interlock working value of condenser vacuum and bypass is changed, pure condensate operating mode condenser vacuum is inferior to-during 65KPa, the bypass of I level, the bypass of II level are stopped using automatically, and pure condensate operating mode condenser vacuum is better than-70KPa, and the bypass of I level, the bypass of II level can be opened; High back pressure heat supply operating mode is inferior to-and during 27kPa, bypass is opened in locking, and high back pressure heat supply operating mode is better than-during 32kPa, allow bypass to open.
In above arbitrary scheme, preferably, in the step of the variation of operation monitoring parameter, low pressure cylinder spray magnetic valve working value is changed.
More preferably, under the pure condensate operating mode, during low pressure (LP) cylinder exhaust temperature 〉=80 ℃, open back cylinder water spray magnetic valve; Under the high back pressure heat supply operating mode, during low pressure (LP) cylinder exhaust temperature 〉=90 ℃, open back cylinder water spray magnetic valve.
Preferably, the control step of described unit comprises: to the heating network parameter control in above arbitrary scheme.
More preferably, described to the heating network parameter control in, when the circulation water for heating temperature parameter raises unusually, adjust unit load.
More preferably, described to the heating network parameter control in, according to ambient temperature situations every day, draw the temperature Change curve, the method that adopts Boiler Steam parameter and unit load to combine is adjusted circulating water temperature.
More preferably, in to the heating network parameter control, the heating network quantity of circulating water is 2.6 ten thousand tons of capacity, and recirculated water is finished a circulation needs 4 hours.
Preferably, the control step of unit also comprises: to the control of steam-operating water circulating pump in above arbitrary scheme.
More preferably, in the control step of described unit, by the control of steam-operating water circulating pump being avoided drive the little back pressure machine generation trip event of steam-operating water circulating pump.
More preferably, in described control to the steam-operating water circulating pump, the medium and small back pressure machine steam inlet condition of stable adjustment.
More preferably, stable when adjusting medium and small back pressure machine steam inlet condition in described control to the steam-operating water circulating pump, keep only high transfiniting of steam inlet condition, in order to avoid pump group hypervelocity.
More preferably, in described control to the steam-operating water circulating pump, stable when adjusting medium and small back pressure machine steam inlet condition, keep steam inlet condition stable, by avoiding its large-scale fluctuation, prevent from causing that rocking of pneumatic pump group rotating speed cause circulation pressure and flow to change significantly and water hammer.
Preferably, the control step of above-mentioned unit also comprises: to the control of low pressure differential expansion in above arbitrary scheme.
More preferably, in the control step of above-mentioned unit, by its ANOMALOUS VARIATIONS is controlled in the control of low pressure differential expansion.
More preferably, in described control to the low pressure differential expansion, by control low pressure shaft seal steam inlet condition, make under the prerequisite that satisfies equipment operation needs, adopt low value parameter.
More preferably, in above-mentioned control to the low pressure differential expansion, guaranteeing under the prerequisite that device security needs, adjusting the steam turbine steam inlet condition and be the lower limit with institute's on-load match parameter.
Preferably, the control step of unit also comprises in above arbitrary scheme: centering pressure vapour parameter control.
More preferably, in the control step of above-mentioned unit, avoid departing from of middle pressure vapour parameter by centering pressure vapour parameter control.
More preferably, in above-mentioned centering pressure vapour parameter control, by the draw gas aperture of quck-opening valve and fast valve of adjustment, accurately adjust flow and the pressure that draws gas.
Compared with prior art, the present invention has the following advantages:
The invention provides a kind of operation control operation method of circulating water heating unit, it is by adopting step: the variation of operation monitoring parameter and the control of unit, can realize the operation control of large tracts of land, big flow high back pressure circulating water heating unit; Solve because operating vacuum is lower, the vacuum system partial parameters is higher, and vacuum variation by a small margin all will produce considerable influence to unit operation, need strengthen monitoring to the recirculated water return water temperature, find temperature anomaly, carry out the problem of the preparation of regulating vacuum early; Usually the heating network quantity of circulating water is about 2.6 ten thousand tons of capacity, pipe network is huge, recirculated water is finished a circulation approximately needs about 4 hours, therefore when unusual the rising takes place in parameters such as circulation water for heating temperature, unit must in time be adjusted load, otherwise can be because the very easily deterioration of vacuum, thereby non-the stopping or the damage of miscellaneous equipment of causing unit, after 4 hours, when having downward trend, circulating water temperature could continue to adjust load according to the heat supply needs, this operating effect reaction relatively lags behind, bring great hidden danger to unit operation, and adopt operation control operation method of the present invention, grope Changing Pattern by analysis, according to ambient temperature situations every day, draw the temperature Change curve, the method that adopts Boiler Steam parameter and unit load to combine is early carried out the adjustment of circulating water temperature, has avoided the passive adjustment of unit load, the important function that keeping of unit vacuum and the stable operation of heating network parameter have been played; In addition, coming into operation of steam-operating water circulating pump, significantly reduced station service, and its exhaust steam still is used as the heating of recirculated water, the device systems economy is higher, if but trip event takes place in the little back pressure machine that drives the steam-operating water circulating pump, will directly have influence on the safe and stable operation of whole High Back Pressure Steam Turbine Units, so it is comparatively crucial to move the stable adjustment of medium and small back pressure machine steam inlet condition, accomplish following 2 points by adjusting the admission pitch: the one, avoid parameter too high, keep steam inlet condition not transfinite, in order to avoid pump group hypervelocity; The 2nd, avoid the large-scale fluctuation of parameter, prevent from causing that rocking of pneumatic pump group rotating speed cause circulation pressure and flow to change significantly and water hammer; Simultaneously, during the operation of unit high back pressure, the low pressure differential expansion changes greatly, bring very big potential safety hazard to unit operation, the technical staff is repeatedly development test under operations staff's cooperation, has sought out the method for effective control differential expansion ANOMALOUS VARIATIONS finally, namely adopt operation control operation method of the present invention, the one, control low pressure shaft seal steam inlet condition under the prerequisite that satisfies equipment operation needs, adopts low parameter as far as possible; The 2nd, guaranteeing under the prerequisite that device security needs, adjust the steam turbine steam inlet condition and be the lower limit with institute's on-load match parameter.By above means, controlled the ANOMALOUS VARIATIONS of low pressure differential expansion effectively; At last, when the unit amount of drawing gas strengthens, intermediate pressure cylinder steam discharge parameter control difficulty strengthens, and pressure must not cross low or temperature is too high, otherwise cause the overload of intermediate pressure cylinder exhaust stage blade easily, influence safety, the technical staff by adopting operation control operation method of the present invention, adjusts the aperture of draw gas quck-opening valve, fast valve through long-term innovation research, grasped and accurately to have adjusted the flow that draws gas and the technical ability of pressure, avoided departing from of middle pressure vapour parameter.
On the whole, the operation control operation method of circulating water heating unit of the present invention, it is by controlling the operation that can realize large tracts of land, big flow high back pressure circulating water heating unit, solve the existing complex operation step of correlation technique and the bigger problem of implementation cost in the prior art, with and existing investment cost is bigger, energy-conservation and economic benefit is less, site technology is transformed the defective that adaptability is relatively poor and security reliability is relatively poor, thereby satisfy the needs of actual conditions.
Description of drawings
The invention will be further described below in conjunction with drawings and embodiments:
Fig. 1 is the operation control operation method of circulating water heating unit of the present invention, in the control step of unit, and in the heating network parameter control, the temperature Change curve map of drawing according to environment temperature.
Fig. 2 is the operation control operation method of circulating water heating unit of the present invention, in the control step of unit, and in the heating network parameter control, the temperature Change curve map of drawing according to environment temperature.
The specific embodiment
In order to understand the present invention better, below in conjunction with specific embodiment the present invention has been done detailed description.But, obviously can carry out different modification and remodeling and not exceed the wideer spirit and scope of the present invention that appended claim limits the present invention.Therefore, following examples have exemplary and hard-core implication.
Embodiment:
As depicted in figs. 1 and 2, the operation control operation method of a kind of circulating water heating unit of the operation control of realization large tracts of land, big flow high back pressure circulating water heating unit may further comprise the steps:
One, the variation of operation monitoring parameter
High back pressure heat supply operating mode, variation has taken place than the pure condensate operating mode in turbine low pressure cylinder part operation monitoring parameter:
Condenser vacuum was different when (one) heat supply was with the pure condensate operating mode, condenser vacuum is reported to the police and the unit tripping value is become " 46.3kPa ,-41.3kPa " respectively by " 86.6kPa ,-79.6kPa " of pure condensate operating mode, because operating vacuum is lower, the vacuum system partial parameters is higher, vacuum variation by a small margin all will produce considerable influence to unit operation, need strengthen monitoring to the recirculated water return water temperature, find temperature anomaly, carry out the preparation of regulating vacuum early.
(2) variation has also taken place in the interlock working value of condenser vacuum and bypass: and pure condensate operating mode condenser vacuum is inferior to-and during 65KPa, the bypass of I level, the bypass of II level are stopped using automatically; When being better than-70KPa, I, the bypass of II level can be opened.And the high back pressure operating mode is inferior to-during 27kPa locking open bypass, be better than-32kPa allows bypass to open.
(3) low pressure cylinder spray magnetic valve working value situation of change: during the pure condensate operating mode, during low pressure (LP) cylinder exhaust temperature 〉=80 ℃, drive back cylinder water spray magnetic valve; During high back pressure heat supply operating mode, during low pressure (LP) cylinder exhaust temperature 〉=90 ℃, drive back cylinder water spray magnetic valve.
Two, the control of unit
(1) heating network parameter control.
The heating network quantity of circulating water is about 2.6 ten thousand tons of capacity, and pipe network is huge, and recirculated water is finished a circulation approximately needs about 4 hours.Therefore when unusual the rising takes place in parameters such as circulation water for heating temperature; unit must in time be adjusted load; otherwise can be because the very easily deterioration of vacuum; thereby non-the stopping or the damage of miscellaneous equipment of causing unit; after 4 hours, when having downward trend, circulating water temperature could continue to adjust load according to the heat supply needs.This operating effect reaction relatively lags behind, and brings great hidden danger to unit operation.
The technical staff gropes Changing Pattern by analysis, according to ambient temperature situations every day (as depicted in figs. 1 and 2), draw the temperature Change curve, the method that adopts Boiler Steam parameter and unit load to combine is early carried out the adjustment of circulating water temperature, avoided the passive adjustment of #5 unit load, the important function that keeping of unit vacuum and the stable operation of heating network parameter have been played.
(2) control of steam-operating water circulating pump
Coming into operation of steam-operating water circulating pump significantly reduced station service, and its exhaust steam still is used as the heating of recirculated water, and the device systems economy is higher.If but trip event takes place in the little back pressure machine that drives the steam-operating water circulating pump, will directly have influence on the safe and stable operation of whole High Back Pressure Steam Turbine Units.So it is comparatively crucial to move the stable adjustment of medium and small back pressure machine steam inlet condition, accomplish following 2 points by adjusting the admission pitch: the one, avoid parameter too high, keep steam inlet condition not transfinite, in order to avoid pump group hypervelocity; The 2nd, avoid the large-scale fluctuation of parameter, prevent from causing that rocking of pneumatic pump group rotating speed cause circulation pressure and flow to change significantly and water hammer.
(3) control of low pressure differential expansion
During the operation of unit high back pressure, the low pressure differential expansion changes greatly, brings very big potential safety hazard to unit operation.The technical staff is test of many times under operations staff's cooperation, has sought out the method for effective control differential expansion ANOMALOUS VARIATIONS finally: the one, and control low pressure shaft seal steam inlet condition under the prerequisite that satisfies equipment operation needs, adopts low parameter as far as possible; The 2nd, guaranteeing under the prerequisite that device security needs, adjust the steam turbine steam inlet condition and be the lower limit with institute's on-load match parameter.By above means, controlled the ANOMALOUS VARIATIONS of low pressure differential expansion effectively.
(4) pressure vapour parameter control in
When the unit amount of drawing gas strengthened, intermediate pressure cylinder steam discharge parameter control difficulty strengthened, and pressure must not cross low or temperature is too high, otherwise cause the overload of intermediate pressure cylinder exhaust stage blade easily, influences safety.The technical staff is through groping too much day, by the draw gas aperture of quck-opening valve, fast valve of adjustment, grasped and can accurately adjust the flow that draws gas and the technical ability of pressure, avoided departing from of middle pressure vapour parameter.
From the heat supply theoretical side, the heat supply of recirculated water back pressure is heat-supplying mode most effective in the various heating forms, also be that cold source energy is the minimum mode of generated output restriction in zero the heat-supplying mode, and adopt the operation control operation method of circulating water heating unit of the present invention, its electric heating proportion has reached 34.5%(generated energy/boiler caloric receptivity), cold source energy is that the electric heating proportion of zero heat supply unit is generally in 30%, has realized the new breakthrough of heat supply unit electric heating ratio.
Simultaneously, aspect environmental protection, can reduce 1877.41 tons of sulfur dioxide (SO2) emissions heat supply season, per hour reduce 0.71 ton; Reduce 593.313 tons of discharged nitrous oxides, per hour reduce 0.225 ton; About 21.95 ten thousand tons of reducing emission of carbon dioxide per hour reduces 83 tons, and environmental benefit is considerable.
This method heat supply transformation aspect of medium-sized unit has at home obtained new technological break-through, sets up the mark post of national similar unit coal consumption, for new way has been opened up in the heat supply transformation.Eliminate the disposable transformation of low pressure (LP) cylinder and realized the existing drawback of Heat Supplying with Low Vacuum, thoroughly solved " heat supply running operating mode unit operation economy is splendid; and pure condensate operating mode economy extreme difference " contradiction of two-stage differentiation, realized annual comprehensive benefit maximization, had broad application prospects and high promotional value.
Claims (10)
1. the progress control method of a circulating water heating unit may further comprise the steps: the variation of monitored parameter and the control of unit.
2. the progress control method of circulating water heating unit as claimed in claim 1, it is characterized in that: the step of the variation of described operation monitoring parameter comprises: under high back pressure heat supply operating mode, compare the variation of generation under the parameter of monitoring turbine low pressure (LP) cylinder part and the pure condensate operating mode.
3. the progress control method of circulating water heating unit as claimed in claim 2 is characterized in that: in the step of the variation of described monitored parameter, monitor the variation of the vacuum parameter generation of condenser under high back pressure heat supply operating mode and the pure condensate operating mode.
4. the operation control operation method of circulating water heating unit as claimed in claim 3 is characterized in that: described condenser vacuum is reported to the police and the unit tripping value is become " 46.3kPa ,-41.3kPa " respectively by " 86.6kPa ,-79.6kPa " under the pure condensate operating mode.
5. as the operation control operation method of claim 3 or 4 described circulating water heating units, it is characterized in that: in the step of the variation of described monitored parameter, the vacuum parameter of condenser under high back pressure heat supply operating mode and the pure condensate operating mode is changed, the recirculated water return water temperature is monitored, when finding temperature anomaly, carry out the preparation of regulating vacuum.
6. the operation control operation method of circulating water heating unit as claimed in claim 2 is characterized in that: in the step of the variation of monitored parameter, the interlock working value of condenser vacuum and bypass is changed.
7. the operation control operation method of circulating water heating unit as claimed in claim 6, it is characterized in that: be inferior at pure condensate operating mode condenser vacuum-during 65KPa, the bypass of I level, the bypass of II level are stopped using automatically, and pure condensate operating mode condenser vacuum is better than-during 70KPa, the bypass of I level, the bypass of II level can be opened; High back pressure heat supply operating mode is inferior to-and during 27kPa, bypass is opened in locking, and high back pressure heat supply operating mode is better than-during 32kPa, allow bypass to open.
8. the operation control operation method of circulating water heating unit as claimed in claim 2 is characterized in that: in the step of the variation of operation monitoring parameter, low pressure cylinder spray magnetic valve working value is changed.
9. the operation control operation method of circulating water heating unit as claimed in claim 8 is characterized in that: under the pure condensate operating mode, during low pressure (LP) cylinder exhaust temperature 〉=80 ℃, open back cylinder water spray magnetic valve; Under high back pressure heat supply operating mode, during low pressure (LP) cylinder exhaust temperature 〉=90 ℃, open back cylinder water spray magnetic valve.
10. as the operation control operation method of each described circulating water heating unit among the claim 1-9, it is characterized in that: the control step of described unit comprises the heating network parameter control.
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| CN201310206097.7A CN103292383B (en) | 2013-05-24 | 2013-05-29 | A kind of operation control operation method of circulating water heating unit |
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| CN201310197546.6 | 2013-05-24 | ||
| CN201310206097.7A CN103292383B (en) | 2013-05-24 | 2013-05-29 | A kind of operation control operation method of circulating water heating unit |
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| CN103292383B CN103292383B (en) | 2016-03-23 |
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| CN201320301788.0U Expired - Fee Related CN203374321U (en) | 2013-05-24 | 2013-05-29 | Moving blade of low-pressure rotor |
| CN201320301790.8U Expired - Fee Related CN203374322U (en) | 2013-05-24 | 2013-05-29 | Low-pressure separating board for steam turbine double-rotor exchanging circulating water heat supply |
| CN201320301712.8U Expired - Fee Related CN203374326U (en) | 2013-05-24 | 2013-05-29 | Optimized rear cylinder water spray system |
| CN201310206163.0A Expired - Fee Related CN103291391B (en) | 2013-05-24 | 2013-05-29 | A kind of steam turbine power generation heating system with double-mode |
| CN201310206097.7A Expired - Fee Related CN103292383B (en) | 2013-05-24 | 2013-05-29 | A kind of operation control operation method of circulating water heating unit |
| CN201320301786.1U Expired - Fee Related CN203374325U (en) | 2013-05-24 | 2013-05-29 | Connecting structure between condenser throat portion and steam turbine exhaust port |
| CN201320301505.2U Expired - Fee Related CN203374320U (en) | 2013-05-24 | 2013-05-29 | Low-pressure rotor for steam turbine double-rotor exchanging circulating water heat supply |
| CN201320301482.5U Expired - Fee Related CN203374324U (en) | 2013-05-24 | 2013-05-29 | Low-pressure circulating component |
| CN201310206093.9A Expired - Fee Related CN103306758B (en) | 2013-05-24 | 2013-05-29 | A kind of control method of monitored parameter under high back pressure supplies thermal condition |
| CN201320301484.4U Expired - Fee Related CN203374323U (en) | 2013-05-24 | 2013-05-29 | Low-pressure front-back shaft sealing parts |
| CN201310208872.2A Expired - Fee Related CN103382860B (en) | 2013-05-24 | 2013-05-30 | Steam turbine power generation heating system controlling method |
| CN201310208998.XA Expired - Fee Related CN103306753B (en) | 2013-05-24 | 2013-05-30 | A kind of steam turbine set cooling water system and chilled(cooling) water supply (CWS) method |
| CN201320355671.0U Expired - Fee Related CN203374328U (en) | 2013-05-24 | 2013-06-21 | Clapboard combination structure for steam turbine |
| CN201320355675.9U Expired - Fee Related CN203374329U (en) | 2013-05-24 | 2013-06-21 | Low pressure through-flow structure |
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| CN201320301788.0U Expired - Fee Related CN203374321U (en) | 2013-05-24 | 2013-05-29 | Moving blade of low-pressure rotor |
| CN201320301790.8U Expired - Fee Related CN203374322U (en) | 2013-05-24 | 2013-05-29 | Low-pressure separating board for steam turbine double-rotor exchanging circulating water heat supply |
| CN201320301712.8U Expired - Fee Related CN203374326U (en) | 2013-05-24 | 2013-05-29 | Optimized rear cylinder water spray system |
| CN201310206163.0A Expired - Fee Related CN103291391B (en) | 2013-05-24 | 2013-05-29 | A kind of steam turbine power generation heating system with double-mode |
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| CN201320301786.1U Expired - Fee Related CN203374325U (en) | 2013-05-24 | 2013-05-29 | Connecting structure between condenser throat portion and steam turbine exhaust port |
| CN201320301505.2U Expired - Fee Related CN203374320U (en) | 2013-05-24 | 2013-05-29 | Low-pressure rotor for steam turbine double-rotor exchanging circulating water heat supply |
| CN201320301482.5U Expired - Fee Related CN203374324U (en) | 2013-05-24 | 2013-05-29 | Low-pressure circulating component |
| CN201310206093.9A Expired - Fee Related CN103306758B (en) | 2013-05-24 | 2013-05-29 | A kind of control method of monitored parameter under high back pressure supplies thermal condition |
| CN201320301484.4U Expired - Fee Related CN203374323U (en) | 2013-05-24 | 2013-05-29 | Low-pressure front-back shaft sealing parts |
| CN201310208872.2A Expired - Fee Related CN103382860B (en) | 2013-05-24 | 2013-05-30 | Steam turbine power generation heating system controlling method |
| CN201310208998.XA Expired - Fee Related CN103306753B (en) | 2013-05-24 | 2013-05-30 | A kind of steam turbine set cooling water system and chilled(cooling) water supply (CWS) method |
| CN201320355671.0U Expired - Fee Related CN203374328U (en) | 2013-05-24 | 2013-06-21 | Clapboard combination structure for steam turbine |
| CN201320355675.9U Expired - Fee Related CN203374329U (en) | 2013-05-24 | 2013-06-21 | Low pressure through-flow structure |
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Also Published As
| Publication number | Publication date |
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| CN103292383B (en) | 2016-03-23 |
| CN203374322U (en) | 2014-01-01 |
| CN203374328U (en) | 2014-01-01 |
| CN103291391A (en) | 2013-09-11 |
| CN103306753A (en) | 2013-09-18 |
| CN203374320U (en) | 2014-01-01 |
| CN103291391B (en) | 2016-08-10 |
| CN203374325U (en) | 2014-01-01 |
| CN103306758B (en) | 2016-06-01 |
| CN203374329U (en) | 2014-01-01 |
| CN203374323U (en) | 2014-01-01 |
| CN103306753B (en) | 2015-08-12 |
| CN103382860B (en) | 2015-12-02 |
| CN203374326U (en) | 2014-01-01 |
| CN203374324U (en) | 2014-01-01 |
| CN203374321U (en) | 2014-01-01 |
| CN103306758A (en) | 2013-09-18 |
| CN103382860A (en) | 2013-11-06 |
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