CN214741492U - Closed circulating water cold end system - Google Patents
Closed circulating water cold end system Download PDFInfo
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- CN214741492U CN214741492U CN202121154986.XU CN202121154986U CN214741492U CN 214741492 U CN214741492 U CN 214741492U CN 202121154986 U CN202121154986 U CN 202121154986U CN 214741492 U CN214741492 U CN 214741492U
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Abstract
The utility model discloses a closed circulating water cooling system, which comprises a steam turbine system, a generator, a controller, a steam turbine system steam inlet energy measuring device, a power measuring device and an environmental parameter measuring device; the controller input signal pass through the signal control cable and be connected with steam turbine system admission energy measuring device, power measuring device and environmental parameter measuring device, controller output signal passes through the signal control cable and is connected with power ventilation cooling tower water feeding electric valve, power ventilation cooling tower water outlet motorised valve, circulating water pump and circulating water pump motorised valve. The system realizes that data support is provided for the optimized operation of a subsequent dynamic realization unit cold end system under the condition of collecting the current unit parameters and the environmental parameters.
Description
Technical Field
The utility model belongs to the technical field of power plant operation optimization, concretely relates to closed circulation water-cooling end system.
Background
The circulating water pump is used as main equipment of a cold end system of the steam turbine and is also one of main equipment consumed by service power, and the optimized operation of the circulating water pump has important significance for the energy saving and consumption reduction work of a power plant. For a closed circulating water system, a cold end system is provided with a cooling tower, and for most combined cycle units and certain coal-fired units which are technically improved in the north, a closed water circulation cold end optimization system usually comprises a plurality of mechanical ventilation cooling towers, and the operation optimization of the type of cold end system needs to consider the combined operation of a plurality of circulating pumps and a plurality of mechanical ventilation cooling towers (hereinafter referred to as mechanical towers).
Under the influence of external environmental parameters, the cooling capacity of the cooling tower fluctuates greatly along with the change of time, and the operation optimization mode of the closed circulating water system can change for many times along with the change of time within one day, so that the closed circulating water system can realize dynamic optimization operation from the aspect of deep energy conservation, namely the influence caused by the real-time change of the environmental parameters is considered; however, the actual closed circulating water cold end has no related data acquisition system, so that the subsequent optimization operation cannot be carried out.
SUMMERY OF THE UTILITY MODEL
In order to solve the relevant data acquisition problem of closed circulating water cold junction optimization operation, the utility model aims to provide a closed circulating water cold junction system, this system can measure all input parameter, generator output and the environmental parameter of steam turbine system through the field operation instrument, is convenient for follow-up to circulating water pump, mechanical power ventilation cooling tower and corresponding valve equipment operate to the realization is gathering under current unit parameter and environmental parameter, and developments realize unit cold junction system optimization operation.
The utility model discloses a following technical scheme realizes:
a closed circulating water cold end system comprises a steam turbine system, a generator, a controller, a steam turbine system steam inlet energy measuring device, a power measuring device and an environmental parameter measuring device;
the steam turbine system is connected with a generator through a rotating shaft and is connected with a steam inlet of a condenser through a steam exhaust pipeline, a water outlet of the condenser is shunted and is connected with a water inlet of an electromechanical ventilation cooling tower through an upper water electric valve of the electromechanical ventilation cooling tower, a water outlet of the electromechanical ventilation cooling tower is connected with a water outlet electric valve of the electromechanical ventilation cooling tower, the water outlet electric valve of the electromechanical ventilation cooling tower is connected with a water inlet of a circulating water pump, and a water outlet of the circulating water pump is connected with a water return port of the condenser through an electric valve of the circulating water pump;
the controller input signal pass through the signal control cable and be connected with steam turbine system admission energy measuring device, power measuring device and environmental parameter measuring device, controller output signal passes through the signal control cable and is connected with power ventilation cooling tower water feeding electric valve, power ventilation cooling tower water outlet motorised valve, circulating water pump and circulating water pump motorised valve.
Optionally, the mechanical draft cooling tower adopts many parallelly connected settings, and mechanical draft cooling tower water inlet all connects mechanical draft cooling tower water-supply electric valve, and mechanical draft cooling tower water outlet all connects mechanical draft cooling tower water-outlet electric valve, and many mechanical draft cooling tower water-outlet electric valves are connected with circulating water pump water inlet through converging the reposition of redundant personnel.
Optionally, the circulating water pumps are arranged in parallel, a circulating water pump electric valve is arranged at a water outlet of each circulating water pump, and a plurality of circulating water pump electric valves are converged behind and connected with a water return port of the condenser.
Optionally, the steam turbine system steam inlet energy measuring device is connected to an instrument of the steam turbine system in field operation, and is used for obtaining the temperature, pressure and flow of steam and water entering the steam turbine system.
Optionally, the power measuring device is connected with an output power measuring instrument operated on site at the outlet of the generator.
Optionally, the environmental parameter measuring device is connected to an ambient humidity and ambient temperature measuring instrument operating on site.
Optionally, the steam turbine system is a single cylinder or multiple cylinders, and the steam turbine system is a regenerative steam extraction system or a regenerative steam extraction-free system.
The utility model discloses at least, following profitable technological effect has:
the utility model provides a pair of closed circulating water cold junction system, steam turbine system admission energy measuring device, power measurement device, environmental parameter measuring device measure all input parameter, generator output and the environmental parameter of steam turbine system through the field operation instrument to the realization is gathering current unit parameter and environmental parameter's effective collection, and the follow-up optimization processing process's of being convenient for developments realize unit cold junction system optimization operation.
Drawings
Fig. 1 is the utility model provides a pair of closed circulation water cooling end system.
Description of reference numerals:
1. the system comprises a steam turbine system, 2, a generator, 3, a condenser, 4, a controller, 5, a steam turbine system steam inlet energy measuring device, 6, a power measuring device, 7, an environmental parameter measuring device, V11-V1n, a mechanical ventilation cooling tower water supply electric valve (number 1-n), V21-V2n, a mechanical ventilation cooling tower water outlet electric valve (number 1-n), V31-V3m, a circulating water pump electric valve (number 1-m), T1-Tn, a mechanical ventilation cooling tower (number 1-n), B1-Bm and a circulating water pump (number 1-m).
Fig. 2 is the utility model provides a pair of closed circulating water cold junction dynamic optimization method.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be removed and completely described below 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, but 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 shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the utility model provides a closed circulation water cooling system, including a steam turbine system 1, a generator 2, a controller 4, a steam turbine system steam inlet energy measuring device 5, a power measuring device 6 and an environmental parameter measuring device 7;
the steam turbine system 1 is connected with a generator 2 through a rotating shaft and is connected with a steam inlet of a condenser 3 through a steam exhaust pipeline, a water outlet of the condenser 3 is divided and is connected with a water inlet of a mechanical ventilation cooling tower T through a water electric valve V1 on the mechanical ventilation cooling tower, a water outlet of the mechanical ventilation cooling tower T is connected with a water outlet electric valve V2 of the mechanical ventilation cooling tower, a water outlet electric valve V2 of the mechanical ventilation cooling tower is connected with a water inlet of a circulating water pump B1, and a water outlet of the circulating water pump B1 is connected with a water return port of the condenser 3 through a circulating water pump electric valve V3;
the input signal of the controller 4 is connected with the steam inlet energy measuring device 5, the power measuring device 6 and the environmental parameter measuring device 7 of the steam turbine system through signal control cables, and the output signal of the controller 4 is connected with the water feeding electric valve V1, the water outlet electric valve V2, the circulating water pump B1 and the circulating water pump electric valve V3 of the mechanical ventilation cooling tower through signal control cables.
Preferably, the mechanical draft cooling tower T is arranged in parallel, the water inlet of each mechanical draft cooling tower T is connected with a water supply electric valve V1 of the mechanical draft cooling tower, the water outlet of each mechanical draft cooling tower T is connected with a water outlet electric valve V2 of the mechanical draft cooling tower, and the water outlet electric valves V2 of the mechanical draft cooling towers are connected with the water inlet of a circulating water pump B1 through converging and redistributing.
Preferably, a plurality of circulating water pumps B1 are arranged in parallel, a circulating water pump electric valve V3 is arranged at each water outlet of the circulating water pumps B1, and a plurality of circulating water pump electric valves V3 are converged and then connected with a water return port of the condenser 3.
In practical situations, the water outlet shunt of the condenser 3 is preferably connected with the water inlet of the mechanical ventilation cooling tower (T1-Tn) through a mechanical ventilation cooling tower upper water electric valve (V11-V1n), the water outlet of the mechanical ventilation cooling tower (T1-Tn) is connected with a mechanical ventilation cooling tower water outlet electric valve (V21-V2n), the mechanical ventilation cooling tower water outlet electric valve (V21-V2n) is connected with the water inlet of a circulating water pump (B1-Bm) through converging and redistributing, and the water outlet of the circulating water pump (B1-Bm) is converged through a circulating water pump electric valve (V31-V3m) and then connected with the water return port of the condenser 3.
4 input signal of controller pass through signal control cable with steam turbine system admission energy measuring device 5, power measuring device 6 and environmental parameter measuring device 7 be connected, 4 output signal of controller pass through signal control cable and mechanical draft cooling tower water feeding electric valve (V11-V1n), mechanical draft cooling tower water outlet electric valve (V21-V2n), circulating water pump (B1-Bm) and circulating water pump electric valve (V31-V3m) are connected.
The closed circulating water cold end dynamic optimization system is suitable for a conventional thermal power generating unit or a combined cycle unit which is provided with a plurality of mechanical ventilation cooling towers.
The steam turbine system steam inlet energy measuring device 5 measures all input parameters of the steam turbine system 1 including steam-water temperature, pressure and flow entering the steam turbine system 1 through a field operation instrument, and inputs energy Q to the steam turbine system through the controller 4inAnd (6) performing calculation.
The power measuring device 6 measures the output power of the outlet of the generator through a field operation instrument, and calculates the shaft power W of the steam turbine system 1 according to the efficiency design value of the generator 2s。
The environment parameter measuring device 7 measures the environment humidity and the environment temperature through a field operation instrument.
The operation instrument used for measuring the parameters needs to be checked regularly, and the interval time does not exceed 1 year.
The steam turbine system 1 can be in any form, such as a single-cylinder/multi-cylinder, with/without steam extraction regenerative system.
Based on the utility model discloses a when the data that closed circulation water cooling end system gathered carry out optimization, can adopt the manual work to handle, perhaps the machine is automatic to go out, and too much injecing is not done to this application, below gives preferred scheme. To illustrate the efficient operation of the system of the present application to collect data.
Referring to fig. 2, preferably, the dynamic optimization method based on the closed cycle water cooling system includes the following steps:
A. the steam turbine system inlet steam energy measuring device 5, the power measuring device 6 and the environmental parameter measuring device 7 collect current operation data and send the current operation data to the controller 4.
B. And the controller 4 performs variable working condition calculation and operation optimization calculation on the cold end system to obtain an optimized operation combination mode of the mechanical ventilation cooling tower and the circulating water pump.
C. And B, correspondingly controlling a water supply electric valve (V11-V1n), a water outlet electric valve (V21-V2n), a circulating water pump (B1-Bm) and a circulating water pump electric valve (V31-V3m) of the mechanical ventilation cooling tower according to the optimized operation combination mode in the step B.
D. Repeating the steps A and B every 2 hours, and if the optimal operation combination mode of the mechanical draft cooling tower and the circulating water pump is not changed, maintaining the current state; if a change has occurred, step C is continued.
The utility model provides a pair of closed circulation water cooling end system, through the on-the-spot input parameter of operation instrument to steam turbine system, generator output and environmental parameter measure, spread into the controller and carry out variable working condition and operation optimization calculation, obtain circulating water pump and mechanical force ventilation cooling tower's optimization operation compound mode after, operate circulating water pump, mechanical force ventilation cooling tower and corresponding valve equipment, thereby realize gathering under current unit parameter and environmental parameter, the optimization operation of dynamic realization unit cold junction system.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is shown between the two, and no indication or suggestion of relative importance is understood. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicants be construed as having contemplated such subject matter as being part of the disclosed subject matter.
Claims (7)
1. A closed circulating water cooling end system is characterized by comprising a steam turbine system, a generator, a controller, a steam turbine system steam inlet energy measuring device, a power measuring device and an environmental parameter measuring device;
the steam turbine system is connected with a generator through a rotating shaft and is connected with a steam inlet of a condenser through a steam exhaust pipeline, a water outlet of the condenser is shunted and is connected with a water inlet of an electromechanical ventilation cooling tower through an upper water electric valve of the electromechanical ventilation cooling tower, a water outlet of the electromechanical ventilation cooling tower is connected with a water outlet electric valve of the electromechanical ventilation cooling tower, the water outlet electric valve of the electromechanical ventilation cooling tower is connected with a water inlet of a circulating water pump, and a water outlet of the circulating water pump is connected with a water return port of the condenser through an electric valve of the circulating water pump;
the controller input signal pass through the signal control cable and be connected with steam turbine system admission energy measuring device, power measuring device and environmental parameter measuring device, controller output signal passes through the signal control cable and is connected with power ventilation cooling tower water feeding electric valve, power ventilation cooling tower water outlet motorised valve, circulating water pump and circulating water pump motorised valve.
2. The closed circulating water cooling system of claim 1, wherein the mechanical draft cooling tower is formed by connecting a plurality of mechanical draft cooling towers in parallel, a water inlet of each mechanical draft cooling tower is connected with a water supply electric valve of the mechanical draft cooling tower, a water outlet of each mechanical draft cooling tower is connected with a water outlet electric valve of the mechanical draft cooling tower, and the water outlet electric valves of the mechanical draft cooling towers are connected with a water inlet of the circulating water pump through converging and then diverging.
3. The closed circulation water cooling end system according to claim 1, wherein a plurality of circulation water pumps are arranged in parallel, a circulation water pump electric valve is arranged at the water outlet of each circulation water pump, and the plurality of circulation water pump electric valves are merged and then connected with the water return port of the condenser.
4. The closed circulation water cooling end system according to claim 1, wherein the steam turbine system steam inlet energy measuring device is connected with a meter for measuring field operation of the steam turbine system and is used for acquiring temperature, pressure and flow of steam and water entering the steam turbine system.
5. A closed cycle water cooling system according to claim 1, wherein the power measuring device is connected to an output power meter operating on site at the generator outlet.
6. A closed cycle water cooling system according to claim 1, wherein the environmental parameter measuring device is connected to an ambient humidity and temperature measuring instrument operating in the field.
7. A closed cycle water cooling end system according to claim 1, wherein the steam turbine system is a single cylinder or multiple cylinders, and the steam turbine system is a regenerative system with or without steam extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154986.XU CN214741492U (en) | 2021-05-26 | 2021-05-26 | Closed circulating water cold end system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154986.XU CN214741492U (en) | 2021-05-26 | 2021-05-26 | Closed circulating water cold end system |
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| Publication Number | Publication Date |
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| CN214741492U true CN214741492U (en) | 2021-11-16 |
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| CN202121154986.XU Active CN214741492U (en) | 2021-05-26 | 2021-05-26 | Closed circulating water cold end system |
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| CN (1) | CN214741492U (en) |
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2021
- 2021-05-26 CN CN202121154986.XU patent/CN214741492U/en active Active
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