CN217080584U - Heat recovery device and power plant steam turbine drainage system - Google Patents
Heat recovery device and power plant steam turbine drainage system Download PDFInfo
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- CN217080584U CN217080584U CN202220880463.1U CN202220880463U CN217080584U CN 217080584 U CN217080584 U CN 217080584U CN 202220880463 U CN202220880463 U CN 202220880463U CN 217080584 U CN217080584 U CN 217080584U
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- 238000011084 recovery Methods 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 abstract description 16
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical group O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a heat recovery device and power plant's steam turbine drainage system relates to heat recovery technical field. The working principle of the heat recovery device is as follows: steam in the tank body flows from bottom to top and passes through the bottom circular tube body and the top circular tube body, cold materials (such as cooling water) pass through the top circular tube body and the bottom circular tube body after being input from the top circular tube body, and a cold material outlet is positioned on the lower circular tube body due to the arrangement of the plurality of water tube columns when the bottom circular tube body flows, so that the water flow speed in the water tube columns is low, and the heat exchange can be fully carried out with high-temperature steam which just enters the tank body; steam is from up flowing temperature from down and is reduced gradually, and the cold burden temperature in the internal top spiral pipe of jar is lower, and because spiral helicine structure, can fully absorb the residual heat of hot steam better, realize hierarchical absorptive purpose, improve the thermal utilization ratio of steam.
Description
Technical Field
The utility model relates to a heat recovery technical field particularly, relates to a heat recovery device and power plant's steam turbine drainage system.
Background
The drainage system of the power plant consists of a boiler, turbine body drainage and steam pipeline drainage. The water drainage system not only affects the heat economy of the power plant, but also threatens the safe and reliable operation of the equipment. In a steam turbine drainage system of a power plant, the heat of steam can be recovered by heating cooling water by using the generated steam.
At present, the steam turbine drainage heat recovery device of a power plant has the following problems:
(1) the heat recovery pipe in the existing heat recovery device is provided with a single channel at the water inlet end and the water outlet end, and cooling water flows into the water outlet end from the water inlet end and flows out of the water outlet end, and only walks once at a constant speed in the heat recovery pipe, so that the cooling water does not slowly stay in the heat recovery pipe, and the heat recovery efficiency is not high.
(2) The heat recovery of the existing heat recovery device is not multi-stage recovery, so that the tail end heat of the hot steam is discharged without sufficient recovery, and the heat recovery is insufficient.
(3) The distilled water generated in the heat recovery process of the existing heat recovery device is not recycled, so that the waste of water resources is caused.
(4) The tank body of the existing heat recovery device is not subjected to heat insulation treatment, so that the heat of hot steam is easily dissipated through the tank wall of the tank body, the heat is wasted, and the heat recovery efficiency is reduced.
In view of this, the present application is specifically made.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat recovery device and power plant's steam turbine drainage system, it can increase the dwell time that the cold burden stagnates in the heat recovery pipe to can realize absorbing in grades, improve the utilization ratio of energy.
The embodiment of the utility model is realized like this:
in a first aspect, the utility model provides a heat recovery device, which comprises a tank body, wherein a heat recovery pipe for circulating cold materials is arranged in the tank body, and a circulation space for circulating steam from bottom to top is formed in the tank body and outside the heat recovery pipe;
the heat recovery pipe comprises a top spiral pipe and a bottom circular pipe body, and a cold material inlet is formed in the top spiral pipe; the bottom ring body comprises an upper ring pipe, a lower ring pipe and a plurality of water pipe columns arranged between the upper ring pipe and the lower ring pipe, the outlet of the top spiral pipe is communicated with the inlet of the upper ring pipe, the top inlet of each water pipe column is communicated with the upper ring pipe, the bottom outlet of each water pipe column is communicated with the lower ring pipe, and a cold material outlet is arranged on the lower ring pipe.
In an optional embodiment, an input pipe for inputting cold materials is arranged at the top of the tank body, an output pipe for outputting heated cold materials is arranged at the bottom of the tank body, the outlet end of the input pipe is communicated with a cold material inlet on the top spiral pipe, and the inlet end of the output pipe is communicated with a cold material outlet on the lower annular pipe.
In an alternative embodiment, a first regulating valve is arranged on the output pipe.
In an optional embodiment, an air inlet pipe for introducing steam is arranged at the bottom of the tank body, and an air outlet pipe for outputting steam is arranged at the top of the tank body.
In an optional embodiment, a condensed water outlet pipeline is arranged on the bottom wall of the tank body, and a second regulating valve is arranged on the condensed water outlet pipeline.
In an optional embodiment, the tank body comprises an upper tank body part and a lower tank body part, the top spiral pipe is located in the upper tank body part, the bottom circular pipe is located in the lower tank body part, the upper tank body part is in a conical shape, the diameter of the upper tank body part is gradually increased from the top to the bottom, and the spiral diameter of the top spiral pipe from top to bottom is gradually increased.
In an alternative embodiment, the lower tank portion is cylindrical in shape.
In an alternative embodiment, the bottom wall of the lower tank part is further provided with a plurality of supporting feet.
In an alternative embodiment, the inner walls of both the upper tank body and the lower tank body are provided with insulating layers.
In a second aspect, the present invention provides a steam turbine drainage system of a power plant, comprising a heat recovery device according to any one of the preceding embodiments.
The embodiment of the utility model provides a beneficial effect is: steam in the tank body flows from bottom to top and passes through the bottom circular tube body and the top circular tube body, cold materials (such as cooling water) pass through the top circular tube body and the bottom circular tube body after being input from the top circular tube body, and a cold material outlet is positioned on the lower circular tube body due to the arrangement of the plurality of water tube columns when the bottom circular tube body flows, so that the water flow speed in the water tube columns is low, and the heat exchange can be fully carried out with high-temperature steam which just enters the tank body; steam is from up flowing temperature from down and is reduced gradually, and the cold burden temperature in the internal top spiral pipe of jar is lower, and because spiral helicine structure, can fully absorb the residual heat of hot steam better, realize hierarchical absorptive purpose, improve the thermal utilization ratio of steam.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a heat recovery device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the heat recovery device of FIG. 1;
fig. 3 is a schematic structural view of the bottom circular tube in fig. 2.
100-heat recovery device; 110-a tank body; 111-an upper tank part; 112-a lower tank portion; 120-a heat recovery tube; 121-a top helical tube; 122-bottom circular tube body; 1221-an upper annular tube; 1222-a lower annular tube; 1223-water column; 130-a flow-through space; 140-an input tube; 150-an output pipe; 151-first regulating valve; 160-air inlet pipe; 170-air outlet pipe; 180-condensed water outlet pipeline; 181-second regulating valve; 190-supporting feet; 001-inlet; 002-cold material outlet; 003-heat preservation layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, an embodiment of the present invention provides a heat recovery device 100, including a tank 110, a heat recovery pipe 120 for circulating a cold material is disposed in the tank 110, a circulation space 130 for circulating steam from bottom to top is formed in the tank 110 and outside the heat recovery pipe 120, and the cold material (e.g., cooling water) in the heat recovery pipe 120 is heated by the hot steam in the tank 110 to recover heat in the steam.
An input pipe 140 for inputting cold materials is arranged at the top of the tank body 110, an output pipe 150 for outputting heated cold materials is arranged at the bottom of the tank body 110, and the cold materials are input from the top and then are output from the bottom output pipe 150 after exchanging heat with steam in the tank body through the heat recovery pipe 120.
An air inlet pipe 160 for introducing steam is arranged at the bottom of the tank body 110, an air outlet pipe 170 for outputting steam is arranged at the top of the tank body 110, and the steam flows from bottom to top in the circulation space 130 and is output from the air outlet pipe 170 at the top after entering the tank body 110 from the air inlet pipe 160. The outboard end of the inlet duct 160 may be connected to a steam turbine to utilize the steam generated by the steam turbine.
Specifically, the outlet pipe 150 may be located on a bottom side wall of the tank 110, and the inlet pipe 140 may be located on a top wall or a top side wall of the tank 110. The inlet end of the input pipe 140 can be connected with the cooling water tank, and the output pipe 150 can be connected with the hot water utilization end device after outputting the heated hot water, and the type of the specific device is not limited.
In some embodiments, a first regulating valve 151 is disposed on the output pipe 150 to control the opening or closing of the output pipe 150, or to regulate the flow rate of the refrigerant in the output pipe 150.
In some embodiments, a condensate outlet line 180 is disposed on the bottom wall of the tank 110, and a second regulating valve 181 is disposed on the condensate outlet line 180, so that the condensate outlet line 180 can be used to discharge the cooling water deposited on the tank 110, thereby achieving the purpose of saving resources. This portion of the cooling water may come from steam condensation and may also come from condensed water on the outer wall of the heat recovery pipe 120.
For more stable support, the tank 110 includes an upper tank 111 and a lower tank 112, and a plurality of support legs 190 are further disposed on the bottom wall of the lower tank 112, the number of the support legs 190 is not limited, and may be three, so as to achieve the effect of stable support.
Referring to fig. 2 and 3, the heat recovery pipe 120 in the tank 110 includes a top spiral pipe 121 and a bottom circular pipe 122, and the top spiral pipe 121 is provided with a cold charge inlet (not shown); the bottom circular tube body 122 comprises an upper circular tube 1221, a lower circular tube 1222 and a plurality of water tube columns 1223 located between the upper circular tube 1221 and the lower circular tube 1222, an outlet of the top spiral tube 121 is communicated with an inlet 001 of the upper circular tube 1221, a top inlet of each water tube column 1223 is communicated with the upper circular tube 1221, a bottom outlet of each water tube column 1223 is communicated with the lower circular tube 1222, and a cold material outlet 002 is arranged on the lower circular tube 1222. Cold materials (such as cooling water) are input from the top spiral pipe 121 and then pass through the top spiral pipe 121 and the bottom annular pipe body 122, when the bottom annular pipe body flows, due to the arrangement of a plurality of water pipe columns 1223, a cold material outlet 002 is positioned on the lower annular pipe 1222, only one cold material outlet 002 is arranged, so that the water flow speed in the water pipe columns is low, and the cold materials which are preliminarily heated by the top spiral pipe 121 can fully exchange heat with high-temperature steam which just enters the tank body; steam is from up flowing temperature from down reducing gradually, still has a large amount of residual heat behind bottom ring body 122, and the cold burden in the internal top spiral pipe 121 of jar is because just getting into jar body 110 temperature lower, and because spiral helicine structure, can fully absorb the residual heat of hot steam better, realizes hierarchical absorptive purpose, improves the thermal recovery efficiency of steam.
Specifically, the outlet end of the input tube 140 is in communication with the cold charge inlet on the top coil 121, and the inlet end of the output tube 150 is in communication with the cold charge outlet 002 on the lower annular tube 1222 to form a complete input and output line. When the cooling water pipe is used, the cooling water enters the top spiral pipe 121 and the bottom circular pipe body 122 after being input from the input pipe 140, the water pipe columns 1223 are completely filled, and the water yield of the output pipe 150 is limited, so that the water flow speed in the water pipe columns 1223 is reduced, the cooling water stays in the water pipe columns 1223 for a long time, and the cooling water can be fully absorbed and heated.
Further, the top spiral pipe 121 is located in the upper tank portion 111, the bottom circular pipe 122 is located in the lower tank portion 112, the upper tank portion 111 is in a conical shape, the diameter of the upper tank portion 111 gradually increases from the top to the bottom, and the spiral diameter of the top spiral pipe 121 from top to bottom gradually increases. The top spiral tube 121 has a shape of spirally winding from top to bottom, and the spiral diameter means that the shape of the spiral tube cut by a certain horizontal section is a circle or a quasi-circle, and the diameter of the circle cut from top to bottom is gradually increased. Specifically, the upper tank 111 is matched in shape to the spiral formed by the inside top spiral pipe 121, and the distance between the left and right ends of the top spiral pipe 121 and the inner wall of the upper tank 111 is substantially the same.
Further, the lower tank portion 112 has a cylindrical shape with a height slightly larger than the distance between the upper and lower annular pipes 1221, 1222. Specifically, the upper annular pipe 1221 and the lower annular pipe 1222 may be both circular pipes, the water pipe column 1223 may be a tubular structure extending in the vertical direction, the top and the bottom of the tubular structure are respectively communicated with the upper annular pipe 1221 and the lower annular pipe 1222, and the number of the water pipe columns 1223 is not too small, so as to achieve the purpose of reducing the flow rate of the cold material. The number of the water columns 1223 may be determined according to the size of the upper and lower annular pipes 1221 and 1222, and may be arranged at equal intervals.
In some embodiments, the inner walls of the upper tank 111 and the lower tank 112 are provided with an insulating layer 003 to prevent heat of the hot steam from flowing away from the inner wall of the tank 110.
The embodiment of the utility model provides a power plant's steam turbine drainage system is still provided, including above-mentioned heat recovery device 100, can also include steam generation device etc..
To sum up, the utility model provides a heat recovery device and power plant's steam turbine drainage system has carried out the improvement to the pipeline of the concrete structure of heat recovery pipe, the structure of the jar body and configuration and has possessed following advantage:
(1) the circular ring type design of the heat recovery pipe ensures that the length of the time side that the cooling water stays in the heat recovery pipe is long, and the heat absorption is increased;
(2) the tail part of the hot steam is fully absorbed by a spiral pipe in a graded absorption mode;
(3) the heat insulation layer is added to prevent heat from losing from the tank body;
(4) the cooling water generated in the heat exchange process can be recycled, and the purpose of resource recovery is achieved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A heat recovery device is characterized by comprising a tank body, wherein a heat recovery pipe for circulating cold materials is arranged in the tank body, and a circulation space for circulating steam from bottom to top is formed in the tank body and outside the heat recovery pipe;
the heat recovery pipe comprises a top spiral pipe and a bottom annular pipe body, and a cold material inlet is formed in the top spiral pipe; the bottom ring body comprises an upper ring pipe, a lower ring pipe and a plurality of water pipe columns arranged between the upper ring pipe and the lower ring pipe, the outlet of the top spiral pipe is communicated with the inlet of the upper ring pipe, every is communicated with the top inlet of the water pipe columns and the upper ring pipe, every is communicated with the lower ring pipe, and a cold material outlet is formed in the lower ring pipe.
2. The heat recovery device according to claim 1, wherein the top of the tank body is provided with an input pipe for inputting cold materials, the bottom of the tank body is provided with an output pipe for outputting heated cold materials, the outlet end of the input pipe is communicated with the cold material inlet on the top spiral pipe, and the inlet end of the output pipe is communicated with the cold material outlet on the lower annular pipe.
3. The heat recovery device of claim 2, wherein the output pipe is provided with a first regulating valve.
4. The heat recovery device according to claim 1, wherein an inlet pipe for introducing steam is arranged at the bottom of the tank body, and an outlet pipe for outputting steam is arranged at the top of the tank body.
5. The heat recovery device according to claim 4, wherein a condensate outlet pipeline is arranged on the bottom wall of the tank body, and a second regulating valve is arranged on the condensate outlet pipeline.
6. The heat recovery device of claim 1, wherein the tank includes an upper tank portion and a lower tank portion, the top helical pipe is located in the upper tank portion, the bottom annular pipe is located in the lower tank portion, the upper tank portion is in a conical shape, the upper tank portion increases in diameter from top to bottom, and the top helical pipe increases in diameter from top to bottom.
7. The heat recovery device of claim 6, wherein the lower tank portion is cylindrical in shape.
8. The heat recovery device of claim 6, wherein the bottom wall of the lower tank portion further comprises a plurality of support feet.
9. The heat recovery device of claim 6, wherein the inner walls of the upper tank portion and the lower tank portion are each provided with an insulating layer.
10. A power plant steam turbine steam trap, comprising the heat recovery device of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220880463.1U CN217080584U (en) | 2022-04-14 | 2022-04-14 | Heat recovery device and power plant steam turbine drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220880463.1U CN217080584U (en) | 2022-04-14 | 2022-04-14 | Heat recovery device and power plant steam turbine drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217080584U true CN217080584U (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220880463.1U Active CN217080584U (en) | 2022-04-14 | 2022-04-14 | Heat recovery device and power plant steam turbine drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217080584U (en) |
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2022
- 2022-04-14 CN CN202220880463.1U patent/CN217080584U/en active Active
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