CN218033097U

CN218033097U - Boiler overheating and cooling device for power plant

Info

Publication number: CN218033097U
Application number: CN202221911260.0U
Authority: CN
Inventors: 王晖
Original assignee: CHN Energy Group Ledong Power Generation Co Ltd
Current assignee: CHN Energy Group Ledong Power Generation Co Ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-12-13
Anticipated expiration: 2032-07-21

Abstract

The utility model discloses a power plant is with overheated heat sink of boiler relates to boiler cooling technical field, including the boiler main part, the inside upper surface of boiler main part is provided with the connection fore-set, connect the lower surface and the bent shape cooling tube fixed connection of fore-set, bent shape cooling tube and horizontal intermediate bottom fixed connection, horizontal intermediate bottom and bent shape capillary fixed connection, bent shape capillary and the end and the outlet pipe fixed connection of intaking of circulating pump, circulating pump fixed connection is at the inside upper surface of cooling chamber. The utility model discloses, because bent shape cooling tube and bent shape capillary are integrated into one piece, consequently avoided the great and problem that causes the crack to appear in the body surface in the cooling tube both ends difference in temperature of same material to appear, flow through the frozen water circulation in the frozen water groove and cool down to filtering the main part, the cooling frozen water in the frozen water groove can continue to flow to the extrinsic cycle and use, the problem of spray water after having avoided the fountain cooling can't directly carry out the use appears.

Description

Boiler overheating and cooling device for power plant

Technical Field

The utility model relates to a boiler cooling technical field, more specifically relate to a power plant is with overheated heat sink of boiler.

Background

Utility boilers, also known as power plant boilers, refer to medium and large boilers in power plants that provide steam to turbines in a specified amount and quality. One of the main thermal equipment of a thermal power plant. It is usually matched with a turbo-generator set with a certain capacity, mainly used for generating electricity, but also can be used for supplying heat to the outside in some special occasions. Generally, the evaporation capacity is large, steam parameters (steam temperature and steam pressure) are high, a whole set of auxiliary equipment is needed, a chamber combustion hearth is needed to be configured, a forced ventilation mode is adopted, various fuels (coal powder, crude oil or heavy oil, blast furnace gas or coke oven gas) can be combusted, the structure is complex, the efficiency is high, most of the fuels can reach about 85-93%, and the requirements on the operation management level, the mechanization degree and the automatic control technology are quite high.

When the boiler used in the power plant is overheated, the risk of equipment damage caused by overlarge internal steam pressure is easily caused, if the temperature of the boiler is reduced during overheating, the steam in the boiler is easily condensed into water again, the boiler needs to heat and evaporate the water again, the fuel consumption is increased, the power generation cost is increased, the existing boiler cooling mainly depends on the circulating flow of cooling liquid in a cooling pipe, then the circulating pipe outside the boiler is sprayed and cooled by spray water, therefore, the cooling of the boiler is completed, but the problem of huge water consumption exists when the method is used for cooling the boiler, cooling water is required to be continuously sprayed on the surface of the boiler circulating pipe, meanwhile, two ends of the boiler circulating pipe are respectively arranged in the high-temperature boiler and the cooling chamber, the temperature difference between the two ends is large, and the boiler circulating pipe is easy to cause the cooling circulating liquid in the pipe body to overflow due to the fact that cracks appear on the surface of the pipe body due to overlarge temperature difference.

Therefore, there is a need for a boiler desuperheating device for power plants to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a: in order to solve the problem that the water consumption is huge and easily cause the easy both ends temperature in circulating pipe body surface too big and the crack appears, the utility model provides a power plant is with overheated heat sink of boiler.

(II) technical scheme

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

a boiler overheating and cooling device for a power plant comprises a boiler main body, wherein a connecting top column is arranged on the inner upper surface of the boiler main body, the lower surface of the connecting top column is fixedly connected with a curved cooling pipe, the curved cooling pipe is fixedly connected with a transverse middle pipe, the transverse middle pipe is fixedly connected with a curved capillary pipe, the curved capillary pipe is fixedly connected with a water inlet end and a water outlet pipe of a circulating pump, and the circulating pump is fixedly connected with the inner upper surface of a cooling chamber;

the ice water cooling device comprises a cooling chamber, an ice water inlet pipe, an ice water outlet pipe, an ice water inlet valve, an ice water outlet valve, an ice water inlet pipe, an ice water outlet pipe and a partition plate, wherein the lower end of the inside of the cooling chamber is fixedly connected with the ice water tank;

the lower end of the curved capillary tube is fixedly connected with a cooling circulation tube, one end of the cooling circulation tube, far away from the curved capillary tube, is fixedly connected with a curved cooling tube, and the outside of the cooling circulation tube is fixedly connected with a cooling control valve.

Furthermore, a cooling liquid filling pipe is fixedly connected to the outside of the cooling circulation pipe, and a filling control valve is fixedly connected to the outside of the cooling liquid filling pipe.

Furthermore, a circulating flow valve is fixedly connected to the outside of the transverse middle pipe, the circulating flow valve is a one-way liquid valve, and the liquid flows from the curved cooling pipe to the curved capillary pipe.

Further, the cooling control valve is a one-way liquid valve, and the flow direction of the liquid is from the curved capillary tube to the curved cooling tube.

Furthermore, a steam pipeline heat insulation sleeve is sleeved outside the cooling circulation pipe and the transverse middle pipe, and is made of polyurethane materials.

Furthermore, annular heat dissipation fins are uniformly arranged outside the curved capillary tube and used for increasing the contact area between ice water and the curved capillary tube.

Furthermore, a support ring is arranged at the bottom of the boiler main body, and a boiler support foot seat is arranged outside the support ring.

(III) advantageous effects

The utility model has the advantages as follows:

1. the utility model discloses, when the inside overheated time that needs cool down of boiler main part, the start-up circulating pump opens cooling control valve, circulation flow valve, frozen water intaking valve, frozen water outlet valve through pneumatics, under the circulation drive effect of circulating pump, bent shape cooling tube, bent shape capillary, cooling circulation pipe. And a circulating loop is formed between the curved capillary tube and the transverse middle tube, so that cooling liquid flows in a rapid circulating manner in the cooling liquid, the curved capillary tube is immersed in the ice water tank, heat in the curved capillary tube is absorbed by ice water through the curved capillary tube under the action of heat transfer, and the ice water in the ice water tank can be kept at 7-10 ℃ all the time due to continuous circulating flow of the ice water in the ice water tank, so that high-temperature steam heat in the boiler main body can be rapidly conveyed and transferred outwards to achieve the effect of cooling the boiler main body.

2. The utility model discloses, through setting up coolant liquid filling tube and filling control valve, when the inside coolant liquid of cooling cycle pipe reduces because of high temperature evaporation, can open the filling control valve, fill the pipe through the coolant liquid and supply the coolant liquid to the inside of cooling cycle pipe to make curved shape cooling tube and curved shape capillary's inside to fill all the time has the coolant liquid that the volume is suitable, avoid curved shape cooling tube and curved shape capillary's inside coolant liquid to reduce and cause the problem appearance of cooling system's the cooling effect of cooling greatly discount.

3. The utility model discloses, establish the steam conduit insulation cover through the outside cover at cooling circulation pipe, horizontal intermediate bottom and be arranged in reducing the heat of steam conduit in the outside air and scatter and disappear, also avoided the high temperature on steam conduit surface simultaneously to scald the staff, through setting up annular heat radiation fins for increase frozen water and curved capillary's area of contact makes the frozen water can absorb more heats in the coolant liquid, makes cooling mechanism's cooling effect better.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the cooling chamber of the present invention;

fig. 4 is a schematic view of the connection structure of the ring-shaped heat dissipation fins of the present invention;

FIG. 5 is a schematic view of the front view structure of the present invention;

fig. 6 is a schematic view of the steam pipe insulation cover structure of the present invention.

Reference numerals: 1. a boiler main body; 2. connecting the top column; 3. a curved cooling tube; 4. a curved capillary tube; 5. a circulation pump; 6. a cooling chamber; 7. an ice water tank; 8. an ice water inlet pipe; 9. an ice water outlet pipe; 10. an ice water inlet valve; 11. an ice water outlet valve; 12. a partition plate; 13. a cooling circulation pipe; 14. a cooling control valve; 15. a coolant filling pipe; 16. a fill control valve; 17. a transverse intermediate tube; 18. a circulating flow valve; 19. a support ring; 20. a boiler supporting foot seat; 21. and annular radiating fins.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-5, an overheating and cooling device for a boiler used in a power plant comprises a boiler body 1, a support ring 19 is arranged at the bottom of the boiler body 1, a boiler support foot base 20 is arranged outside the support ring 19, a connection support column 2 is arranged on the upper surface inside the boiler body 1, the lower surface of the connection support column 2 is fixedly connected with a curved cooling pipe 3, the curved cooling pipe 3 is fixedly connected with a transverse intermediate pipe 17, a circulating flow valve 18 is fixedly connected with the outside of the transverse intermediate pipe 17, the circulating flow valve 18 is a one-way liquid valve, the liquid flow direction is from the curved cooling pipe 3 to a curved capillary tube 4, the transverse intermediate pipe 17 is fixedly connected with the curved capillary tube 4, the curved capillary tube 4 is fixedly connected with a water inlet end and a water outlet pipe of a circulating pump 5, and the circulating pump 5 is fixedly connected with the upper surface inside a cooling chamber 6;

the lower end of the inside of the cooling chamber 6 is fixedly connected with an ice water tank 7, the left end of the inside of the ice water tank 7 is fixedly connected with an ice water inlet pipe 8, the right end of the inside of the ice water tank 7 is fixedly connected with an ice water outlet pipe 9, the outside of the ice water inlet pipe 8 is fixedly connected with an ice water inlet valve 10, the outside of the ice water outlet pipe 9 is fixedly connected with an ice water outlet valve 11, and the inside of the cooling chamber 6 is fixedly connected with a partition plate 12;

the lower end of the curved capillary tube 4 is fixedly connected with a cooling circulation tube 13, one end of the cooling circulation tube 13, which is far away from the curved capillary tube 4, is fixedly connected with the curved cooling tube 3, the outside of the cooling circulation tube 13 is fixedly connected with a cooling control valve 14, the cooling control valve 14 is a one-way liquid valve, and the flowing direction of liquid is from the curved capillary tube 4 to the curved cooling tube 3.

In this embodiment, when the interior of the boiler main body 1 is overheated and needs to be cooled, the circulating pump 5 is started, the cooling control valve 14, the circulating flow valve 18, the ice water inlet valve 10 and the ice water outlet valve 11 are pneumatically opened, and the curved cooling pipe 3, the curved capillary tube 4 and the cooling circulating pipe 13 are driven by the circulating pump 5. And the horizontal middle pipe 17, thereby forming a circulation loop, so that the cooling liquid rapidly circulates and flows in the horizontal middle pipe, the curved capillary 4 is immersed in the ice water tank 7, under the action of heat transfer, the heat in the curved capillary 4 is absorbed by the ice water through the curved capillary 4, because the ice water in the ice water tank 7 continuously circulates and flows, the ice water in the ice water tank 7 can be always kept between 7 ℃ and 10 ℃, therefore, the heat of high-temperature steam in the boiler main body 1 can be rapidly conveyed and transferred outwards, the effect of cooling the boiler main body 1 is achieved, because the curved cooling pipe 3 and the curved capillary 4 are not integrally formed, the problem that the temperature difference between two ends of the cooling pipe made of the same material is large, so that the surface of the pipe body is cracked is avoided, the filtering main body 1 is cooled through the circulation flow of the ice water in the ice water tank 7, the cooling ice water in the ice water tank 7 can continuously circulate and flow outwards, and the problem that the spray water after being cooled in a spraying manner can not be directly used is avoided.

Example 2

Referring to fig. 1-3, the present embodiment is further optimized based on embodiment 1, specifically, a cooling liquid filling pipe 15 is fixedly connected to the outside of the cooling circulation pipe 13, and a filling control valve 16 is fixedly connected to the outside of the cooling liquid filling pipe 15.

In this embodiment, by providing the cooling liquid filling tube 15 and the filling control valve 16, when the cooling liquid inside the cooling circulation tube 13 is reduced due to high-temperature evaporation, the filling control valve 16 can be opened, and the cooling liquid is supplied to the inside of the cooling circulation tube 13 through the cooling liquid filling tube 15, so that the inside of the curved cooling tube 3 and the curved capillary tube 4 is always filled with the cooling liquid with a suitable volume, and the problem that the cooling effect of the cooling system is greatly reduced due to the reduction of the cooling liquid inside the curved cooling tube 3 and the curved capillary tube 4 is avoided.

Example 3

Referring to fig. 4-6, the present embodiment is optimized based on the

embodiment

1 or 2, specifically, a steam pipe thermal insulation sleeve is sleeved outside the cooling circulation pipe 13 and the transverse intermediate pipe 17, and the steam pipe thermal insulation sleeve is made of polyurethane material.

Specifically, the annular heat dissipation fins 21 are uniformly arranged outside the curved capillary tube 4 and used for increasing the contact area between ice water and the curved capillary tube 4.

In this embodiment, the steam pipe insulating sleeve is sleeved outside the cooling circulation pipe 13 and the transverse intermediate pipe 17 to reduce heat loss of the steam pipe in the external air, and meanwhile, high temperature on the surface of the steam pipe is prevented from scalding workers, and by arranging the annular heat dissipation fins 21, the contact area between ice water and the curved capillary tube 4 is increased, so that the ice water can absorb more heat in the cooling liquid, and the cooling effect of the cooling mechanism is better.

In conclusion: the utility model discloses, when the inside overheat of boiler main part 1 need be cooled down, start circulating pump 5, open cooling control valve 14, circulating flow valve 18, frozen water intaking valve 10, frozen water outlet valve 11 through pneumatics, under circulating pump 5's circulation drive effect, bent shape cooling tube 3, bent shape capillary 4, cooling circulation pipe 13. And the horizontal middle pipe 17, so that the cooling liquid flows in a rapid circulation manner inside, the curved capillary 4 is immersed in the ice water tank 7, under the action of heat transfer, the heat inside the curved capillary 4 is absorbed by the ice water through the curved capillary 4, and the ice water in the ice water tank 7 continuously flows in a circulation manner, so that the ice water in the ice water tank 7 can be kept between 7 ℃ and 10 ℃ all the time, therefore, the heat of high-temperature steam in the boiler main body 1 can be conveyed and transferred outwards rapidly, so as to achieve the effect of cooling the boiler main body 1, because the curved cooling pipe 3 and the curved capillary 4 are not integrally formed, the problem that the temperature difference between two ends of the cooling pipe made of the same material is large, so that the surface of the pipe body cracks appear is avoided, the filtering main body 1 is cooled through the circulation flow of the ice water in the ice water tank 7, and the cooling ice water in the ice water tank 7 can continuously flow in a circulation manner outwards for use, the problem that spray water after being cooled in a spraying mode cannot be directly used is avoided, by arranging the cooling liquid filling pipe 15 and the filling control valve 16, when the cooling liquid in the cooling circulating pipe 13 is reduced due to high-temperature evaporation, the filling control valve 16 can be opened, and the cooling liquid is supplemented into the cooling circulating pipe 13 through the cooling liquid filling pipe 15, so that the cooling liquid with proper volume is filled in the curved cooling pipe 3 and the curved capillary 4 all the time, the problem that the cooling effect of a cooling system is greatly reduced due to the reduction of the cooling liquid in the curved cooling pipe 3 and the curved capillary 4 is avoided, a steam pipeline heat-insulating sleeve is sleeved outside the cooling circulating pipe 13 and the transverse intermediate pipe 17 and used for reducing the heat loss of a steam pipeline in external air, and meanwhile, workers are prevented from being scalded by the high temperature on the surface of the steam pipeline, by arranging the annular heat radiating fins 21, the contact area between the ice water and the curved capillary tube 4 is increased, so that the ice water can absorb more heat in the cooling liquid, and the cooling effect of the cooling mechanism is better.

Above, only be the preferred embodiment of the present invention, not be used for limiting the present invention, the patent protection scope of the present invention is based on the claims, all the structural changes equivalent to the content of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a power plant is with overheated heat sink of boiler, includes boiler main part (1), its characterized in that: the upper surface of the interior of the boiler main body (1) is provided with a connecting top column (2), the lower surface of the connecting top column (2) is fixedly connected with a curved cooling pipe (3), the curved cooling pipe (3) is fixedly connected with a transverse middle pipe (17), the transverse middle pipe (17) is fixedly connected with a curved capillary pipe (4), the curved capillary pipe (4) is fixedly connected with a water inlet end and a water outlet pipe of a circulating pump (5), and the circulating pump (5) is fixedly connected to the upper surface of the interior of the cooling chamber (6);

the lower end of the inside of the cooling chamber (6) is fixedly connected with an ice water tank (7), the left end of the inside of the ice water tank (7) is fixedly connected with an ice water inlet pipe (8), the right end of the inside of the ice water tank (7) is fixedly connected with an ice water outlet pipe (9), the outside of the ice water inlet pipe (8) is fixedly connected with an ice water inlet valve (10), the outside of the ice water outlet pipe (9) is fixedly connected with an ice water outlet valve (11), and the inside of the cooling chamber (6) is fixedly connected with a partition plate (12);

the lower end of the curved capillary tube (4) is fixedly connected with a cooling circulating tube (13), one end, far away from the curved capillary tube (4), of the cooling circulating tube (13) is fixedly connected with the curved cooling tube (3), and the outside of the cooling circulating tube (13) is fixedly connected with a cooling control valve (14).

2. The power plant boiler desuperheating device according to claim 1, wherein: and a cooling liquid filling pipe (15) is fixedly connected to the outside of the cooling circulation pipe (13), and a filling control valve (16) is fixedly connected to the outside of the cooling liquid filling pipe (15).

3. The power plant boiler desuperheating device according to claim 2, wherein: the outside fixedly connected with circulation flow valve (18) of horizontal intermediate pipe (17), circulation flow valve (18) are one-way liquid valve, and the liquid flow direction is from curved cooling tube (3) to curved capillary (4).

4. The power plant boiler desuperheating device according to claim 1, characterized in that: the cooling control valve (14) is a one-way liquid valve, and the flow direction of the liquid is from the curved capillary tube (4) to the curved cooling tube (3).

5. The power plant boiler desuperheating device according to claim 1, wherein: and steam pipeline heat insulation sleeves are sleeved outside the cooling circulation pipe (13) and the transverse middle pipe (17), and are made of polyurethane materials.

6. The power plant boiler desuperheating device according to claim 1, wherein: and annular heat dissipation fins (21) are uniformly arranged outside the curved capillary tube (4) and are used for increasing the contact area of the ice water and the curved capillary tube (4).

7. The power plant boiler desuperheating device according to claim 1, characterized in that: the boiler is characterized in that a support ring (19) is arranged at the bottom of the boiler main body (1), and a boiler support foot seat (20) is arranged outside the support ring (19).