CN218511560U - Circulating water heat energy recycling device for power plant - Google Patents
Circulating water heat energy recycling device for power plant Download PDFInfo
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- CN218511560U CN218511560U CN202222710989.8U CN202222710989U CN218511560U CN 218511560 U CN218511560 U CN 218511560U CN 202222710989 U CN202222710989 U CN 202222710989U CN 218511560 U CN218511560 U CN 218511560U
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Abstract
The utility model discloses a recycling device for circulating water heat energy of a power plant, which comprises a circulating water pool, a condenser, a delivery pump, a heat exchanger and a cooling tower which are connected into a loop through pipelines in sequence; the heat exchanger comprises a shell, wherein a first water inlet pipe and a first water outlet pipe are fixed at one end of the shell, and the first water inlet pipe and the first water outlet pipe are both communicated with a pipeline; a connecting pipe is arranged in the shell and is communicated with the first water inlet pipe; a heat exchange tube is fixed on the outer wall of the connecting tube, and a heat exchange cavity is formed between the heat exchange tube and the connecting tube; a heat exchange mechanism is arranged in the shell and is communicated with the heat exchange cavity; the bottom end of the shell is fixedly provided with a second water inlet pipe, the top end of the shell is fixedly provided with a second water outlet pipe, and the second water inlet pipe and the second water outlet pipe are both communicated with the heat exchange mechanism. The utility model discloses a setting of heat exchanger in-connection pipe and heat transfer mechanism can prolong the time that the circulating water dwelled in the heat exchanger, improves the heat transfer effect of heat exchanger, effectively improves the thermal recycle rate of circulating water.
Description
Technical Field
The utility model relates to an energy saving and emission reduction technical field especially relates to a power plant circulating water heat energy recycles device.
Background
In the power generation production process of a thermal power plant, steam becomes low-temperature exhaust steam after being acted by a steam turbine, the low-temperature exhaust steam is discharged into a condenser to be condensed and released, the part of condensed heat is brought to a cooling tower by circulating water and is directly discharged to the atmosphere, heat can be wasted, and huge energy waste is caused due to the fact that the discharged heat is very large.
Although there is the device that retrieves this part waste heat of power plant and be used for urban heating among the prior art, generally utilize current heat exchanger to go on to the recovery of circulating water waste heat, the circulating water gets into the other end by the one end of heat exchanger and flows out, and the circulating water dwell time is shorter in the heat exchanger, and is limited to the heat recovery in the circulating water, consequently, still can cause great energy waste. Therefore, the recycling device of the circulating water heat energy of the power plant with good heat recovery effect is needed to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power plant circulating water heat energy recycles device to solve the relatively poor problem of heat recovery among the above-mentioned prior art.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a power plant circulating water heat energy recycling device, which comprises a circulating water pool, a condenser, a delivery pump, a heat exchanger and a cooling tower, wherein the circulating water pool, the condenser, the delivery pump, the heat exchanger and the cooling tower are connected into a loop through pipelines in sequence; the heat exchanger comprises a shell, wherein one end of the shell is fixedly communicated with a first water inlet pipe and a first water outlet pipe, and the first water inlet pipe and the first water outlet pipe are both communicated with the pipeline; a connecting pipe is arranged in the shell and is fixedly communicated with the first water inlet pipe; a heat exchange tube is fixedly sleeved on the outer wall of the connecting tube, and a heat exchange cavity is formed between the heat exchange tube and the connecting tube; a heat exchange mechanism is arranged in the shell and is communicated with the heat exchange cavity; the casing bottom mounting intercommunication has the second inlet tube, the fixed intercommunication in casing top has the second outlet pipe, the second inlet tube with the second outlet pipe all with heat transfer mechanism intercommunication, the second inlet tube intercommunication has city water supply pipe, second outlet pipe intercommunication has city water pipeline.
Preferably, the heat exchange mechanism comprises a first water collecting pipe and a second water collecting pipe which are arranged in the shell, the second water collecting pipe is positioned above the first water collecting pipe, the second water inlet pipe is communicated with the first water collecting pipe, the second water outlet pipe is communicated with the second water collecting pipe, and the heat exchange pipe is positioned between the first water collecting pipe and the second water collecting pipe; the first water collecting pipe and the second water collecting pipe are communicated with a plurality of heat exchange pieces, an overflowing channel is arranged in each heat exchange piece, and the first water collecting pipe and the second water collecting pipe are communicated with the heat exchange cavity through the heat exchange pieces.
Preferably, the heat exchange pieces are fins, the fins are of annular structures, and a gap is formed between every two adjacent fins; the fin is provided with a plurality of overflowing holes which are not communicated with the overflowing channel.
Preferably, the surface of the fin is provided with corrugated grooves.
Preferably, the inner wall of the shell is fixedly provided with a flow guide block, the flow guide block is arranged corresponding to the water outlet end of the connecting pipe, and the flow guide block is provided with a flow slowing piece.
Preferably, the flow slowing piece comprises a connecting rod fixedly connected to the flow guide block, and the connecting rod is sleeved in the connecting pipe; the connecting rod with be provided with helical blade between the connecting pipe, helical blade fixed connection be in on the connecting rod outer wall, helical blade with the contact cooperation of connecting pipe inner wall.
Preferably, an insulating layer is fixedly arranged on the outer wall of the shell.
Preferably, a valve is arranged on a pipeline between the delivery pump and the heat exchanger.
The utility model discloses a following technological effect:
the utility model provides a power plant circulating water heat energy recycling device, the circulating water in the circulating water pond absorbs the heat after and carries out the heat transfer for city water through the heat exchanger, the circulating water when flowing through the heat exchanger, through the setting of heat exchanger in-connection pipe and heat transfer mechanism, can prolong the time that the circulating water dwelled in the heat exchanger, improves the heat transfer effect of heat exchanger to make the city water obtain preheating, the circulating water obtains cooling, effectively improves the recycle ratio to the circulating water heat.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the power plant circulating water heat energy recycling device of the present invention;
fig. 2 is a schematic structural diagram of the heat exchanger of the present invention;
the device comprises a circulating water pool-1, a condenser-2, a delivery pump-3, a heat exchanger-4, a cooling tower-5, a pipeline-6, a valve-7, a shell-401, a first water inlet pipe-402, a first water outlet pipe-403, a connecting pipe-404, a heat exchange pipe-405, a second water inlet pipe-406, a second water outlet pipe-407, a first water collecting pipe-408, a second water collecting pipe-409, a fin-410, an overflowing hole-411, a corrugated groove-412, a flow guide block-413, a connecting rod-414 and a helical blade-415.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model provides a power plant circulating water heat energy recycling device, which comprises a circulating water pool 1, a condenser 2, a delivery pump 3, a heat exchanger 4 and a cooling tower 5, wherein the circulating water pool 1, the condenser 2, the delivery pump 3, the heat exchanger 4 and the cooling tower 5 are sequentially connected into a loop through a pipeline 6, and a valve 7 is arranged on the pipeline 6 between the delivery pump 3 and the heat exchanger 4; the heat exchanger 4 comprises a shell 401, one end of the shell 401 is fixedly communicated with a first water inlet pipe 402 and a first water outlet pipe 403, and the first water inlet pipe 402 and the first water outlet pipe 403 are both communicated with the pipeline 6; a connecting pipe 404 is arranged in the shell 401, and the connecting pipe 404 is fixedly communicated with the first water inlet pipe 402; a heat exchange tube 405 is fixedly sleeved on the outer wall of the connecting tube 404, and a heat exchange cavity is formed between the heat exchange tube 405 and the connecting tube 404; a heat exchange mechanism is arranged in the shell 401 and is communicated with the heat exchange cavity; the fixed intercommunication in casing 401 bottom has second inlet tube 406, and the fixed intercommunication in casing 401 top has second outlet pipe 407, and second inlet tube 406 and second outlet pipe 407 all communicate with heat transfer mechanism, and second inlet tube 406 intercommunication has city water supply pipe, and second outlet pipe 407 intercommunication has city water pipe.
In order to further improve the heat exchange effect of the heat exchanger 4, the heat exchange mechanism comprises a first water collecting pipe 408 and a second water collecting pipe 409 which are arranged in the shell 401, the second water collecting pipe 409 is positioned above the first water collecting pipe 408, the second water inlet pipe 406 is communicated with the first water collecting pipe 408, the second water outlet pipe 407 is communicated with the second water collecting pipe 409, and the heat exchange pipe 405 is positioned between the first water collecting pipe 408 and the second water collecting pipe 409; the first water collecting pipe 408 and the second water collecting pipe 409 are both communicated with a plurality of heat exchange pieces, overflowing channels are arranged inside the heat exchange pieces, and the first water collecting pipe 408 and the second water collecting pipe 409 are both communicated with the heat exchange cavity through the heat exchange pieces.
Further, in order to prolong the retention time of the circulating water in the heat exchanger 4 and improve the heat exchange effect of the heat exchanger 4, the heat exchange member is a fin 410, the fin 410 is of an annular structure, and a gap is formed between two adjacent fins 410; the fin 410 is provided with a plurality of overflowing holes 411, and the overflowing holes 411 are not communicated with the overflowing channel.
Further, in order to increase the contact area between the fins 410 and the circulating water and further increase the heat exchange effect, corrugated grooves 412 are formed in the surfaces of the fins 410.
Further, in order to slow down the circulation speed of the circulating water in the heat exchanger 4 and prolong the stay time of the circulating water in the heat exchanger 4, a flow guide block 413 is fixedly mounted on the inner wall of the shell 401, the flow guide block 413 is arranged corresponding to the water outlet end of the connecting pipe 404, and a flow buffering piece is mounted on the flow guide block 413.
Furthermore, while the circulation speed of the circulating water is reduced, the contact area between the circulating water and the connecting pipe 404 is increased, the flow reducing member comprises a connecting rod 414 fixedly connected to the flow guide block 413, and the connecting rod 414 is sleeved in the connecting pipe 404; a helical blade 415 is arranged between the connecting rod 414 and the connecting pipe 404, the helical blade 415 is fixedly connected to the outer wall of the connecting rod 414, and the helical blade 415 is in contact fit with the inner wall of the connecting pipe 404.
Further, in order to reduce the heat loss of the circulating water, an insulating layer is fixedly installed on the outer wall of the shell 401.
The utility model provides a power plant circulating water heat energy recycles device, the theory of operation as follows:
circulating water in the circulating water tank 1 absorbs the condensation heat of low-temperature exhaust steam in the condenser 2, and then is pumped into the heat exchanger 4 through the delivery pump 3; the city water enters the first water collecting pipe 408 through the second water inlet pipe 406, the city water in the first water collecting pipe 408 enters the second water collecting pipe 409 in two ways, wherein one way enters the heat exchange cavity through the overflowing channel in the fin 410 and enters the second water collecting pipe 409 through the overflowing channel in the fin 410, the other way directly enters the second water collecting pipe 409 through the overflowing channel in the fin 410, and the city water entering the second water collecting pipe 409 flows into the city water pipeline through the second water outlet pipe 407.
After entering the shell 401 of the heat exchanger 4, the circulating water firstly enters the connecting pipe 404 and exchanges heat with the city water in the heat exchange cavity, and because the spiral blade 415 is arranged in the connecting pipe 404, the circulating water can flow along the channel between the spiral blade 415 and the connecting pipe 404 when flowing through the connecting pipe 404, so that the circulating water can be in contact with the top of the inner wall of the connecting pipe 404, the heat exchange area between the circulating water and the connecting pipe 404 is ensured, and the flow rate of the circulating water can be influenced to a certain extent by the arrangement of the spiral blade 415; the circulating water collides with the flow guide block 413 after flowing out of the connecting pipe 404, is guided by the flow guide block 413, and flows towards the first water outlet pipe 403 outside the connecting pipe 404, at the moment, the circulating water can fill the inside of the shell 401, and exchanges heat with the urban water in the first water collecting pipe 408, the fins 410 and the second water collecting pipe 409 in the process; when circulating water flows in the shell 401, the circulating water is blocked by the fins 410, the residence time of the circulating water in the shell 401 is prolonged, one part of the circulating water flows through the gaps between the fins 410 and the shell 401, the other part of the circulating water flows through the overflowing holes 411 on the fins 410, the circulating water after heat exchange flows out of the heat exchanger 4 through the first water outlet pipe 403 on the shell 401, and flows into the circulating water pool 1 again after being cooled by the cooling tower 5.
The utility model provides a power plant circulating water heat energy recycles device, the circulating water in the circulating water pond 1 absorbs the heat after and carries out the heat transfer for the municipal water through heat exchanger 4, the circulating water is when flowing through heat exchanger 4, through the setting of 4 in-connection pipes 404 of heat exchanger and heat transfer mechanism, the time that can the extension circulating water dwells in heat exchanger 4, improve heat exchanger 4's heat transfer effect, thereby make the municipal water obtain preheating, the circulating water obtains cooling, effectively improve the recycle ratio to the circulating water heat.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only described in the preferred embodiments of the present invention, but not limited to the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. The device for recycling the heat energy of the circulating water of the power plant comprises a circulating water pool (1), a condenser (2), a conveying pump (3), a heat exchanger (4) and a cooling tower (5), wherein the circulating water pool (1), the condenser (2), the conveying pump (3), the heat exchanger (4) and the cooling tower (5) are sequentially connected into a loop through a pipeline (6), the device is characterized in that the heat exchanger (4) comprises a shell (401), one end of the shell (401) is fixedly communicated with a first water inlet pipe (402) and a first water outlet pipe (403), and the first water inlet pipe (402) and the first water outlet pipe (403) are both communicated with the pipeline (6); a connecting pipe (404) is arranged in the shell (401), and the connecting pipe (404) is fixedly communicated with the first water inlet pipe (402); a heat exchange tube (405) is fixedly sleeved on the outer wall of the connecting tube (404), and a heat exchange cavity is formed between the heat exchange tube (405) and the connecting tube (404); a heat exchange mechanism is arranged in the shell (401), and the heat exchange mechanism is communicated with the heat exchange cavity; casing (401) bottom mounting intercommunication has second inlet tube (406), casing (401) top mounting intercommunication has second outlet pipe (407), second inlet tube (406) with second outlet pipe (407) all with heat exchange mechanism intercommunication, second inlet tube (406) intercommunication has city water supply pipe, second outlet pipe (407) intercommunication has city water pipe.
2. The power plant circulating water thermal energy recycling device of claim 1, wherein the heat exchange mechanism comprises a first water collecting pipe (408) and a second water collecting pipe (409) which are arranged in the housing (401), the second water collecting pipe (409) is arranged above the first water collecting pipe (408), the second water inlet pipe (406) is communicated with the first water collecting pipe (408), the second water outlet pipe (407) is communicated with the second water collecting pipe (409), and the heat exchange pipe (405) is arranged between the first water collecting pipe (408) and the second water collecting pipe (409); the first water collecting pipe (408) and the second water collecting pipe (409) are communicated with a plurality of heat exchange pieces, an overflowing channel is arranged inside each heat exchange piece, and the first water collecting pipe (408) and the second water collecting pipe (409) are communicated with the heat exchange cavity through the heat exchange pieces.
3. The power plant circulating water heat energy recycling device according to claim 2, wherein the heat exchange member is a fin (410), the fin (410) is of an annular structure, and a gap is arranged between two adjacent fins (410); the fin (410) is provided with a plurality of overflowing holes (411), and the overflowing holes (411) are not communicated with the overflowing channel.
4. The power plant circulating water thermal energy reusing device according to claim 3, wherein the surface of the fin (410) is provided with a corrugated groove (412).
5. The power plant circulating water heat energy recycling device of claim 1, wherein a flow guide block (413) is fixedly installed on the inner wall of the housing (401), the flow guide block (413) is arranged corresponding to the water outlet end of the connecting pipe (404), and a flow buffering piece is installed on the flow guide block (413).
6. The power plant circulating water heat energy recycling device of claim 5, wherein the flow slowing member comprises a connecting rod (414) fixedly connected to the flow guide block (413), and the connecting rod (414) is sleeved in the connecting pipe (404); the connecting rod (414) with be provided with helical blade (415) between connecting pipe (404), helical blade (415) fixed connection be in on connecting rod (414) outer wall, helical blade (415) with connecting pipe (404) inner wall contact cooperation.
7. The recycling apparatus of power plant circulating water heat energy according to claim 1, wherein an insulating layer is fixedly installed on the outer wall of the housing (401).
8. A power plant circulating water thermal energy recycling apparatus according to claim 1, characterized in that a valve (7) is installed on the pipeline (6) between the transfer pump (3) and the heat exchanger (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222710989.8U CN218511560U (en) | 2022-10-14 | 2022-10-14 | Circulating water heat energy recycling device for power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222710989.8U CN218511560U (en) | 2022-10-14 | 2022-10-14 | Circulating water heat energy recycling device for power plant |
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| Publication Number | Publication Date |
|---|---|
| CN218511560U true CN218511560U (en) | 2023-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222710989.8U Active CN218511560U (en) | 2022-10-14 | 2022-10-14 | Circulating water heat energy recycling device for power plant |
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| Country | Link |
|---|---|
| CN (1) | CN218511560U (en) |
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2022
- 2022-10-14 CN CN202222710989.8U patent/CN218511560U/en active Active
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