CN218821209U

CN218821209U - Close quick-witted refrigerated economizer system after shut down of thermal power plant

Info

Publication number: CN218821209U
Application number: CN202222904321.7U
Authority: CN
Inventors: 刘玉江; 薛建立; 杨永斌; 冯孝峰; 刘林虎; 张文龙; 王晓
Original assignee: Yangcheng International Power Generation Co ltd
Current assignee: Yangcheng International Power Generation Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-04-07
Anticipated expiration: 2032-11-02

Abstract

The utility model provides an energy-saving system for cooling the thermal power plant close to the machine after the shutdown, belonging to the technical field of cooling of the thermal power plant; including the adjacent cooling module of multiunit, cooling module includes closed water circulating system and open water circulating system, and closed water circulating system is last still to communicate there are closed communicating pipe and closed loop cooling chamber, and the cover is equipped with open cooling chamber on the closed loop cooling chamber, and open cooling chamber is linked together with the open water circulating system who corresponds, installs well cold tube in the closed loop cooling chamber, and it has a plurality of even well cold drawing of distribution to still communicate on the well cold drawing, still is equipped with a plurality of arc pieces heat conduction fin on the closed loop cooling chamber, still is equipped with multiunit ladder outer loop and ladder inner ring between closed loop cooling chamber and the open cooling chamber. The utility model discloses an open cooling chamber and setting such as closed loop cooling chamber have solved the thermal power plant and have organized circulating water pump outage back, and closed water circulating system cools off low grade series problem of economic benefits.

Description

Close quick-witted refrigerated economizer system after shut down of thermal power plant

Technical Field

The utility model relates to a cooling technology field of thermal power plant, in particular to close quick-witted refrigerated economizer system after shutting down of thermal power plant.

Background

A thermal power plant, referred to as a thermal power plant for short, is a plant for producing electric energy by using combustible materials (such as coal) as fuel, and the basic production process is as follows: when the fuel is burnt, water is heated to generate steam, chemical energy of the fuel is converted into heat energy, the steam pressure pushes a steam turbine to rotate, the heat energy is converted into mechanical energy, and then the steam turbine drives a generator to rotate, so that the mechanical energy is converted into electric energy.

Closed water, namely closed cooling water, wherein the cooling water circulates in a closed system and is generally cooled by open water, and a cooling water source (comprising bearing cooling water of part of rotating equipment) is provided for each auxiliary equipment of the unit so as to ensure the normal operation of the auxiliary equipment and the system;

circulating water: sending the cooling water to a condenser to cool the steam discharged by a low-pressure cylinder of the steam turbine so as to maintain the vacuum of the high-pressure condenser and the low-pressure condenser, so that steam-water circulation can be continued, and water is supplied to an open water system and an ash flushing system;

open water: cooling by circulating water, and providing cooling water for coolers of the closed water heat exchanger and the vacuum pump;

the unit circulating water, open water and closed water all operate in normal operation, the open water cools the closed water, and the closed water provides cooling water sources for a hydrogen cooler, an oil cooler, an electric pump air cooler, an air compressor, a fan oil station, a coal mill bearing and the like.

Shut down the back when circulating water pump moves, closed water can be by abundant cooling, closed water temperature is not problematic, shut down the back when circulating water pump stops the fortune, still be in the operation because of closed water user, lose refrigerated closed water temperature and can rise rapidly, for guaranteeing closed water user operation safety, just need maintain closed water temperature and be in low temperature state, so or keep the circulating pump operation to cause the waste of electric energy, or closed water trades water and causes the waste of demineralized water, consequently, this application provides a close refrigerated economizer system after shutting down of thermal power plant and satisfies the water cooling demand of singly organizing circulating water pump after stopping the fortune.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a close quick-witted refrigerated economizer system after thermal power plant shuts down to solve the thermal power plant and singly organize circulating water pump shut down the back, closed water circulating system cooling economic benefits low grade series problem.

In order to solve the technical problem, the utility model provides a following technical scheme:

an energy-saving system for cooling the thermal power plant close to the machine after the thermal power plant is stopped comprises a plurality of groups of adjacent cooling assemblies, wherein each cooling assembly comprises a closed water circulation system and an open water circulation system, the closed water circulation system provides a cooling water source for each auxiliary device of the thermal power plant, the open water circulation system is used for cooling the closed water circulation system, and the adjacent closed water circulation systems are communicated with the open water circulation system;

the closed water circulation system is also communicated with a closed communicating pipe and a closed loop cooling chamber, an open cooling chamber is sleeved on the closed loop cooling chamber, and the open cooling chamber is communicated with the corresponding open water circulation system; the closed-loop cooling chamber is internally rotatably provided with a middle cooling pipe which is positioned on different vertical planes with the closed communicating pipe, the closed-loop cooling chamber is also provided with an arc panel and a plurality of arc heat-conducting fins which are matched with the positions of the middle cooling plates, the arc heat-conducting fins are positioned in the closed-loop cooling chamber, and the middle cooling pipe is communicated with the adjacent open water circulation system;

the closed type communicating pipe with the closed loop cooling chamber is linked together, just the one end of closed type communicating pipe with closed type water circulating system cluster intercommunication, the cambered plate slope is installed on the inner wall of closed loop cooling chamber, the delivery outlet has still been seted up on the cambered plate, and passes through the delivery outlet with correspond closed type water circulating system cluster intercommunication.

Preferably, a plurality of sets of step outer rings and step inner rings corresponding to each other in position are further arranged between the closed-loop cooling chamber and the open-loop cooling chamber, and cooling water in the open-type water circulation system is guided by the plurality of layers of step outer rings and step inner rings and then is discharged into the open-type water circulation system.

Preferably, the plurality of arc-shaped heat-conducting fins are fixedly connected to one side of the arc-shaped plate, extend through the closed-loop cooling chamber and between the closed-loop cooling chamber and the open cooling chamber, and are all metal sheets easy to conduct heat.

Preferably, the intermediate cooling pipe is rotatably installed in the open cooling chamber, two ends of the intermediate cooling pipe penetrate through the closed loop cooling chamber and the open cooling chamber and extend out of the open cooling chamber, and the plurality of intermediate cooling plates in the same relative position are circumferentially arranged by taking the axis corresponding to the intermediate cooling pipe as an axis.

Preferably, a plurality of middle cooling plates are provided with middle cooling grooves on one side, and a plurality of middle cooling plates are provided with middle cooling cavities communicated with the corresponding inner parts of the middle cooling pipes, and the middle cooling plates are made of metal materials easy to conduct heat.

Preferably, the inner wall of the closed communicating pipe is further fixedly sleeved with an annular seat, the annular seat is provided with a funnel-shaped flow guide seat, and the bottom end of the flow guide seat is provided with a plurality of through holes corresponding to the positions of the inter-cooling plates.

Preferably, two fixing seats corresponding to each other in position are fixedly mounted on the outer wall of the open cooling chamber, a pipeline rotating joint is sleeved in each of the two fixing seats, and one end of each of the two pipeline rotating joints is communicated with two ends of the middle cooling pipe respectively.

Preferably, the open cooling chamber is further communicated with a water inlet pipe and a water outlet pipe which are positioned at different heights, the other end of the water inlet pipe and one of the pipeline rotary joints are further communicated with the same water pipe, and the input end of the water pipe is communicated with the adjacent open water circulation system; the other end of the water discharge pipe and the other pipeline rotary joint are also jointly communicated with a same circulating pipe, the output end of the circulating pipe is communicated with the adjacent open water circulating system, and the circulating pipe and the water delivery pipe are respectively provided with a plurality of electromagnetic valves for controlling cooling water to flow in the water inlet pipe, the water discharge pipe or the intercooling pipe.

Preferably, the plurality of stepped outer rings are fixedly sleeved on the outer wall of the closed-loop cooling chamber, the plurality of stepped inner rings are fixedly sleeved on the inner wall corresponding to the open cooling chamber, and the plurality of stepped outer rings and the stepped inner rings are arranged in a stepped and staggered manner.

Preferably, the closed-loop cooling chamber and the open cooling chamber are further provided with a plurality of sealing rings, the middle cooling pipe is sleeved in the sealing rings, and the top end of the open cooling chamber is sleeved with a rubber ring which is coaxially arranged with the closed communicating pipe.

Compared with the prior art, the utility model, following beneficial effect has at least:

among the above-mentioned scheme, through the condition that supplies deashing desulfurization supply channel UNICOM, utilize adjacent quick-witted circulating water cluster to take off fortune unit circulating water cooling closed water, realize stabilizing the purpose of closed temperature, make full use of is close quick-witted abundant circulating water and provides the cooling water source for local closed water, has both avoided the waste of the electric energy that the circulating pump operation caused, has avoided the closed water to trade the waste of the demineralized water that the water caused again.

When the cooling water in the closed circulating water system is cooled by the synchronous rotation of the cold pipes in the plurality of cold plates, the cooling water in the closed circulating water system can be sprayed on the cambered plates, the cambered plates and the plurality of cambered plate heat-conducting fins are utilized to conduct heat between the open cooling chamber and the closed cooling chamber, so that the cooling water in the open circulating water system is fully cooled, meanwhile, when the cooling water in the closed circulating water system is temporarily retained by the rotation of the intercooling tank, the cooling water in the adjacent circulating water system is injected into the intercooling pipe through the pipeline rotary joint and is guided to the plurality of intercooling chambers, the open cooling water in the intercooling tank has higher temperature, and the heat exchange of the intercooling water in the intercooling tank can be further optimized by the scheme that the intercooling water system is stopped in the closed circulating water system, and the intercooling water is cooled integrally.

Through setting up multilayer alternative arrangement's ladder outer loop and ladder inner ring for cooling water in the adjacent open circulating water system gets into between open cooling chamber and the closed loop cooling chamber back through raceway and inlet tube, can obtain abundant "delay" effect between open cooling chamber and the closed loop cooling chamber, thereby it is long when improving the contact of closed loop cooling chamber outer wall and a plurality of arc piece heat conduction fins and cooling water, improve the cooling water in the closed circulating water system under the shut down state and the adjacent not shut down state between the cooling water in the open circulating water system, in addition, through setting up sealing washer and rubber ring, the sealed effect of closed loop cooling chamber and open cooling chamber has been improved, avoid the cooling water seepage phenomenon to appear, improve whole economizer system's stability.

Drawings

The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

FIG. 1 is a schematic view of a partial three-dimensional structure of the present invention;

FIG. 2 is a schematic view of a cut-away structure of the open cooling chamber of the present invention;

FIG. 3 is a schematic view of a split structure of the closed-loop cooling chamber and the open cooling chamber of the present invention;

FIG. 4 is a schematic sectional front view of the closed-loop cooling chamber and the open cooling chamber of the present invention;

FIG. 5 is a schematic view of a split structure of the closed-loop cooling chamber of the present invention;

FIG. 6 is a schematic view of a split-open structure of the middle cooling plate of the present invention;

FIG. 7 is a schematic view of the closed-loop cooling chamber and the open cooling chamber of the present invention in a three-dimensional structure with another view angle;

FIG. 8 is a schematic sectional side view of the closed-loop cooling chamber and the open cooling chamber of the present invention;

fig. 9 is a schematic view of a cut-away structure of the open cooling chamber of the present invention;

FIG. 10 is a schematic view of a three-dimensional structure of the stepped outer ring of the present invention;

fig. 11 is a schematic diagram illustrating an embodiment of the present invention.

[ reference numerals ]

1. A closed communicating pipe; 2. a closed-loop cooling chamber; 3. opening the cooling chamber; 4. an arc piece heat conduction fin; 5. a medium-cooling pipe; 6. a medium-cooling plate; 7. a middle cooling groove; 8. a middle cooling cavity; 9. an annular seat; 10. a flow guide seat; 11. an output aperture; 12. a fixed seat; 13. a pipeline swivel joint; 14. a water inlet pipe; 15. a drain pipe; 16. a water delivery pipe; 17. a circulation pipe; 18. an electromagnetic valve; 19. a stepped outer ring; 20. a stepped inner ring; 21. a seal ring; 22. a rubber ring; 23. a cambered plate.

As shown, specific structures and devices are labeled in the drawings for the purpose of clearly realizing the structure of the embodiments of the present invention, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structures, devices and environments, and those skilled in the art can adjust or modify the devices and environments according to specific needs, and the adjustment or modification is still included in the scope of the appended claims.

Detailed Description

The following describes in detail an energy saving system for on-line cooling after shutdown of a thermal power plant according to the present invention with reference to the accompanying drawings and specific embodiments. Meanwhile, it is described herein that the following embodiments are the best and preferred embodiments for the purpose of making the embodiments more detailed, and may be implemented in other alternative ways by those skilled in the art; also, the accompanying drawings are included to describe embodiments in greater detail and are not intended to limit the invention in any way.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

In general, terms may be understood, at least in part, from their use in context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending at least in part on the context. Additionally, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead allow for the presence of other factors not necessarily explicitly described, depending at least in part on the context.

It is to be understood that the meaning of "on … …", "over … …" and "over … …" in this disclosure should be interpreted in the broadest manner such that "on … …" means not only "directly on" something "but also includes the meaning of" on "something with intervening features or layers therebetween, and" over … … "or" over … … "means not only" over "or" over "something" but may also include the meaning of "over" or "over" something without intervening features or layers therebetween.

Furthermore, spatially relative terms such as "below …", "below …", "lower", "above …", "upper", and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or feature, as shown in the figures. Spatially relative terms are intended to encompass different orientations in use or operation of the device in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1-11, an embodiment of the present invention provides an energy saving system for cooling a thermal power plant before shutdown, including multiple adjacent sets of cooling components, where the cooling components include a closed water circulation system and an open water circulation system, the closed water circulation system provides a cooling water source for each auxiliary device of the unit, the open water circulation system is used for cooling the closed water circulation system, and the adjacent closed water circulation system and the open water circulation system are communicated with each other; the closed water circulation system is also communicated with a closed communication pipe 1 and a closed loop cooling chamber 2, the closed loop cooling chamber 2 is sleeved with an open cooling chamber 3, the open cooling chamber 3 is communicated with a corresponding open water circulation system, a mesocooling pipe 5 which is positioned on different vertical planes with the closed communication pipe 1 is rotatably installed in the closed loop cooling chamber 2, the mesocooling pipe 5 is also communicated with a plurality of uniformly distributed mesocooling plates 6, the closed loop cooling chamber 2 is also provided with an arc panel 23 and a plurality of arc heat conduction fins 4 which are matched with the positions of the plurality of mesocooling plates 6, the arc heat conduction fins 4 are positioned in the closed loop cooling chamber 2, and the mesocooling pipe 5 is communicated with the adjacent open water circulation system; in the embodiment, a third group of operation units are taken as an example (each group of operation units comprises two adjacent circulating water pumps for cooling), a No. 5 machine is supposed to be stopped, a No. 6 machine operates, and the reference is made to the attached drawing 11, in the figure, the No. 6 machine enters a No. 5 machine cooling water tank through a circulating water bypass to enter a No. 5 machine cooling water tank, and then returns to a No. 5 machine water cooler closed type condenser water return water to a closed type condenser water return pipe, and finally enters a No. 5 machine water return pipe to enter a No. 5 water tower closed type condenser water return pipe, and a No. 5 machine circulating water tank is responsible for the operation of the No. 5 circulating water tank through a water pump bypass, so that the cooling water in the open type condenser water system is guided by the multiple layers of the step outer rings 19 and the step inner rings 20 and is discharged into the open type condenser water system, compared with the prior art, after the single group of circulating water pumps stops operating, and the cooling water in the single group of closed type condenser water circulation systems stops cooling by the adjacent open type circulating water pumps, and is cooled by the adjacent open type circulating water systems, and is cooled by the step inner rings 20:

1) Checking that no work is carried out from the outlet of the circulating water pump of the No. 5 machine to a pipeline of a condenser, no work is carried out from the open water system of the No. 5 machine, and the closed water cooler of the No. 5 machine is normally put into operation;

2) Checking that a hydraulic control check valve at the outlet of the circulating water pump of the machine No. 5 is closed, and opening a circulating water return heat-release door of the machine No. 5;

3) Closing a butterfly valve for supplying water to a condenser for returning the circulating water of the No. 5 machine;

4) Opening a bypass manual door of an open water system of the No. 5 machine, an inlet pipeline emptying door of an open water pump of the No. 5 machine and an open cooling water return pipeline emptying door of the No. 5 machine;

5) Opening a manual door of No. 6 machine circulating water for ash removal and desulfurization;

6) Opening one of two paths of No. 5 machine circulating water for manual doors for ash removal and desulfurization;

7) Checking that an inlet pipeline emptying door of the No. 5 open type water pump and an emptying door of the No. 5 open type cooling water return pipeline are closed after stable water flow occurs;

8) Checking the closed water temperature of the No. 5 machine picture, and adjusting the manual opening of the water for ash removal and desulfurization in two ways of No. 5 machine circulating water by an operator according to the closed water temperature;

9) Observing that the water level of the towers 5 and 6 is maintained at a normal value, if the water level change is large, the circulating water quantity can be reduced;

10 If the supply of the ash removal and desulfurization water is not sufficient, the ash removal and desulfurization water is supplied in two units;

11 When necessary, water can be pumped to the tower No. 6 through a circulating water forebay emptying pump of the machine No. 5;

the remarks in the above specific operation measures are:

1) Before the shutdown unit is started, two paths of circulating water of the shutdown unit are closed to supply manual gates for ash removal and desulfurization water, and the original operation mode is recovered;

2) After the single-number unit stops running, furnace side closed water is poured to a double-number unit closed water serial belt;

therefore, according to the condition that the circulating water of the two units in the unit can be communicated through the ash removal and desulfurization water supply pipeline, the circulating water of the unit with shutdown is cooled by the circulating water of the adjacent unit, so that the aim of stabilizing the closed water temperature is fulfilled, the circulating water which is rich in the machine is fully utilized to provide a cooling water source for the closed water of the machine, the waste of electric energy caused by the operation of the circulating pump is avoided, and the waste of desalted water caused by the water change of the closed water is also avoided;

in addition, the cooling water in the adjacent open circulating water systems is guided to the space between the open cooling chamber 3 and the closed cooling chamber 2 by utilizing the bypass pipeline, the shut-down closed circulating water system in the closed cooling chamber 2 is cooled, when the cooling water in the shut-down closed circulating water system enters the closed cooling chamber 2 from one end of the closed communicating pipe 1, due to the eccentric arrangement, the plurality of middle cooling plates 6 drive the middle cooling pipes 5 to synchronously rotate, the cooling water of the closed circulating water system can be promoted to be air-cooled, the cooling water in the closed circulating water system can be thrown onto the arc-shaped plate 23, and the heat is conducted to the space between the open cooling chamber 3 and the closed cooling chamber 2 by utilizing the arc-shaped plate 23 and the plurality of arc-shaped heat conducting fins 4, so that the cooling water in the open circulating water system is fully cooled, and the cooling effect of the closed circulating water system in the shut-down state is optimized.

As shown in fig. 1-7, a closed communication pipe 1 is communicated with a closed-loop cooling chamber 2, one end of the closed communication pipe 1 is serially communicated with a closed water circulation system, an arc panel 23 is obliquely installed on the inner wall of the closed-loop cooling chamber 2, an output hole 11 is further formed in the arc panel 23, and is serially communicated with the corresponding closed water circulation system through the output hole 11 (not shown in the drawing, a pipeline is also communicated between the output hole 11 and the closed water circulation system and penetrates through the open cooling chamber 3), a plurality of arc heat conduction fins 4 are fixedly connected to one side of the arc panel 23 and extend to the space between the closed-loop cooling chamber 2 and the open cooling chamber 3 through the closed-loop cooling chamber 2, the arc panel 23 and the plurality of arc heat conduction fins 4 are all easy heat conduction metal sheets, a middle cooling pipe 5 is rotatably installed in the open cooling chamber 3, two ends of the middle cooling pipe 5 penetrate through the closed-loop cooling chamber 2 and the open cooling chamber 3 and extend to the outside of the open cooling chamber 3, a plurality of middle cooling pipes 6 in the same relative position are all arranged in a circle with an axis of the corresponding middle cooling pipe 5 as an axis, two fixing seats 13 of the middle cooling pipe 5 are provided with two fixing seats, two fixing seats provided with a water inlet pipe connectors 13, two fixing seats provided on which are provided with a rotating pipe connectors 13, two fixing seats provided on the rotating pipe connectors 13, two fixing seats provided with a rotating pipe connector 13, two fixing seats provided on the fixing seat, two fixing seats provided with a rotating pipe connector 13, two fixing seat provided on the rotating pipe connector 13 of the rotating cold pipe connector 13, two fixing seat provided on the rotating cold pipe connector 13 of the rotating pipe connector 13, the input end of the water conveying pipe 16 is communicated with the adjacent open water circulating systems; the other end of the water discharge pipe 15 and the other pipeline rotary joint 13 are also communicated with the same circulating pipe 17, the output end of the circulating pipe 17 is communicated with the adjacent open water circulating system, the circulating pipe 17 and the water delivery pipe 16 are respectively provided with a plurality of electromagnetic valves 18 for controlling the cooling water to flow in the corresponding water inlet pipe 14, the water discharge pipe 15 or the middle cooling pipe 5, when the circulating water pump on a certain group is stopped, the temperature of the closed water circulating system is increased, at the moment, the corresponding electromagnetic valves 18 are opened, the cooling water in the adjacent open water circulating system is guided to the space between the open cooling chamber 3 and the closed cooling chamber 2 through the water delivery pipe 16 and the water inlet pipe 14 by utilizing a bypass pipeline, the stopped closed water circulating system in the closed water circulating system 2 is cooled, the cooling water in the stopped closed water circulating system keeps flowing, and when the cooling water enters the closed cooling chamber 2 from one end of the closed communicating pipe 1, because the axes of the middle cooling plate 6 and the closed communicating pipe 1 are eccentrically arranged, the falling cooling water impacts the cooling plate 6, the middle cooling plates 6 drive the middle cooling pipes 5 to synchronously rotate, the cooling water of the closed circulating water system can be promoted to be cooled, the cooling water in the closed circulating water system can be sprayed on the cambered plate 23, the cambered plate 23 and the plurality of cambered heat-conducting fins 4 are utilized to conduct heat between the open cooling chamber 3 and the closed cooling chamber 2, so that the cooling water in the open circulating water system is fully cooled, meanwhile, when the cooling water is temporarily retained while rotating through the middle cooling tank 7, the cooling water of the adjacent open circulating water system is injected into the middle cooling pipe 5 through the pipeline rotary joint 13 and is guided into the plurality of middle cooling chambers 8, so that the cooling water with higher temperature in the middle cooling tank 7 is under the heat conduction of the middle cooling plates 6, the heat exchange is completed with the cooling water in the inter-cooling cavity 8, so that the cooling effect of the closed circulating water system in the shutdown state is further optimized, and the feasibility of the whole scheme of the application is improved.

As shown in fig. 5 and 6, the inner wall of the closed communicating pipe 1 is further fixedly sleeved with an annular seat 9, the annular seat 9 is provided with a flow guide seat 10 with a funnel-shaped center, the bottom end of the flow guide seat 10 is provided with a through hole corresponding to the positions of the plurality of middle cooling plates 6, and the flow guide seat 10 is arranged to constrain the cooling water flowing downwards to the water column with the corresponding diameter and impact the middle cooling plates 6 below to trigger the plurality of middle cooling plates 6 to drive the middle cooling pipes 5 to synchronously and stably rotate.

As shown in fig. 8-10, a plurality of ladder outer rings 19 are fixedly sleeved on the outer wall of the closed-loop cooling chamber 2, a plurality of ladder inner rings 20 are fixedly sleeved on the inner wall corresponding to the open cooling chamber 3, the ladder outer rings 19 and the ladder inner rings 20 are arranged in a ladder and staggered manner, a plurality of sealing rings 21 are further arranged on the closed-loop cooling chamber 2 and the open cooling chamber 3, the mesocooling pipe 5 is sleeved in the sealing ring 21, a rubber ring 22 coaxially arranged with the closed communication pipe 1 is sleeved on the top end of the open cooling chamber 3, by arranging a plurality of layers of ladder outer rings 19 and ladder inner rings 20 which are alternately arranged, after cooling water in an adjacent open-type circulating water system enters between the open cooling chamber 3 and the closed-loop cooling chamber 2 through a water pipe 16 and a water inlet pipe 14, a sufficient 'detention' effect can be obtained between the open cooling chamber 3 and the closed-loop cooling chamber 2, so that the contact duration between the outer wall of the closed-loop cooling chamber 2 and the cooling water in an adjacent non-shutdown state is prolonged, and the closed-type circulating water heat exchange efficiency between the cooling water in an adjacent open-type circulating water system is improved, and the whole closed-type circulating water exchange efficiency of the closed-type circulating water system is improved by arranging the rubber ring seals 21 and the closed-type cooling chamber 2, and the sealing effect of the closed-type cooling water-type cooling system is improved, and the energy-saving cooling system, and the leakage is improved, and the leakage-saving cooling water-saving cooling system is also, and the leakage of the whole cooling system is improved.

The utility model provides a technical scheme, through the condition that supplies the ash removal desulfurization supply channel UNICOM, utilize adjacent quick-witted circulating water cluster to take off fortune unit circulating water cooling closed water, realize stabilizing the purpose of closed temperature, make full use of is close quick-witted abundant circulating water to provide the cooling water source for local closed water, has both avoided the waste of the electric energy that the circulating pump operation caused, has avoided the closed water to trade the waste of the demineralized water that the water caused again.

The present invention covers any alternatives, modifications, equivalents, and alternatives falling within the spirit and scope of the present invention. In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail as not to unnecessarily obscure aspects of the present invention.

Those skilled in the art will appreciate that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer readable storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The energy-saving system for the on-line cooling after the shutdown of the thermal power plant is characterized by comprising a plurality of groups of adjacent cooling assemblies, wherein each cooling assembly comprises a closed water circulation system and an open water circulation system, the closed water circulation system provides a cooling water source for each auxiliary device of the unit, the open water circulation system is used for cooling the closed water circulation system, and the adjacent closed water circulation systems are communicated with the open water circulation system;

the closed water circulation system is also communicated with a closed communication pipe and a closed loop cooling chamber, an open cooling chamber is sleeved on the closed loop cooling chamber and communicated with the corresponding open water circulation system, and a middle cooling pipe which is positioned on a different vertical plane from the closed communication pipe is rotatably arranged in the closed loop cooling chamber; the closed-loop cooling chamber is also provided with an arc panel and a plurality of arc heat-conducting fins, the arc panel and the arc heat-conducting fins are matched with the positions of the plurality of inter-cooling plates, the arc heat-conducting fins are positioned in the closed-loop cooling chamber, and the inter-cooling pipe is communicated with the adjacent open water circulation system;

2. The energy-saving system for on-line cooling after shutdown of a thermal power plant as claimed in claim 1, wherein a plurality of sets of step outer rings and step inner rings corresponding to each other in position are further arranged between the closed-loop cooling chamber and the open-loop cooling chamber, and cooling water in the open-type water circulation system is guided by the plurality of layers of step outer rings and step inner rings and then discharged into the open-type water circulation system.

3. The thermal power plant shutdown after-machine cooling energy saving system according to claim 1, wherein the plurality of arc fin heat-conducting fins are all fixedly connected to one side of the arc panel and extend to a position between the closed loop cooling chamber and the open cooling chamber through the closed loop cooling chamber, and the arc panel and the plurality of arc fin heat-conducting fins are all made of metal thin sheets easy to conduct heat.

4. The thermal power plant shutdown after-machine cooling energy saving system as claimed in claim 1, wherein the intermediate cooling pipe is rotatably installed in the open cooling chamber, two ends of the intermediate cooling pipe both penetrate through the closed loop cooling chamber and the open cooling chamber and both extend out of the open cooling chamber, and the plurality of intermediate cooling plates at the same relative position are all arranged in a circumferential arrangement with an axis corresponding to the intermediate cooling pipe as an axis.

5. The energy-saving system for on-line cooling after shutdown of the thermal power plant according to claim 1, wherein one side of each of the plurality of intermediate cooling plates is provided with an intermediate cooling groove, each of the plurality of intermediate cooling plates is provided with an intermediate cooling cavity communicated with the interior of the corresponding intermediate cooling pipe, and each of the intermediate cooling plates is made of a metal material easy to conduct heat.

6. The thermal power plant shutdown after-machine cooling energy-saving system as claimed in claim 5, wherein an annular seat is further fixedly sleeved on an inner wall of the closed communicating pipe, a funnel-shaped flow guide seat is arranged on the annular seat, and through holes corresponding to the plurality of inter-cooling plate positions are formed in the bottom end of the flow guide seat.

7. The energy-saving system for on-line cooling after shutdown of the thermal power plant according to claim 5, wherein two fixing seats corresponding to each other in position are fixedly installed on the outer wall of the open cooling chamber, a pipeline rotating joint is sleeved in each of the two fixing seats, and one end of each of the two pipeline rotating joints is communicated with two ends of the intermediate cooling pipe respectively.

8. The energy-saving system for the on-line cooling after the shutdown of the thermal power plant as claimed in claim 7, wherein the open cooling chamber is further communicated with a water inlet pipe and a water outlet pipe which are positioned at different heights, the other end of the water inlet pipe and one of the pipeline rotary joints are further communicated with the same water pipe, and the input end of the water pipe is communicated with the adjacent open water circulation system;

the other end of the water discharge pipe and the other pipeline rotary joint are also jointly communicated with a same circulating pipe, the output end of the circulating pipe is communicated with the adjacent open water circulating system, and the circulating pipe and the water delivery pipe are respectively provided with a plurality of electromagnetic valves for controlling cooling water to flow in the water inlet pipe, the water discharge pipe or the intercooling pipe.

9. The thermal power plant shutdown after-machine cooling energy-saving system according to claim 1, wherein a plurality of the step outer rings are fixedly sleeved on the outer wall of the closed-loop cooling chamber, a plurality of the step inner rings are fixedly sleeved on the inner wall of the corresponding open cooling chamber, and the step outer rings and the step inner rings are arranged in a step-like and staggered manner.

10. The thermal power plant shutdown after-machine cooling energy-saving system as claimed in claim 1, wherein the closed-loop cooling chamber and the open cooling chamber are further provided with a plurality of sealing rings, the middle cooling pipe is sleeved in the sealing rings, and a rubber ring coaxially arranged with the closed communicating pipe is sleeved on the top end of the open cooling chamber.