CN220083789U - Pulsating heat pipe temperature reduction device and temperature reduction control system - Google Patents

Abstract

The utility model discloses a pulsating heat pipe temperature reducing device and a temperature reducing control system, wherein the pulsating heat pipe temperature reducing device comprises a cold source chamber, a heat source chamber and a plurality of groups of closed pulsating heat pipes, the cold source chamber comprises a plurality of spaced subchambers, each subchamber comprises a medium inlet and a medium outlet which are opposite in the flowing direction of a medium, the medium inlet of any subchamber is externally connected with a cold end medium conveying pipeline, the heat source chamber is externally connected with a temperature reducing main steam pipeline, the bottom of the heat source chamber is provided with a condensed water outlet, evaporation sections of the groups of closed pulsating heat pipes are arranged in the heat source chamber in a penetrating manner, and condensation sections of the groups of closed pulsating heat pipes are correspondingly arranged in the subchambers in a penetrating manner. The pulsating heat pipe temperature reducing device can be flexibly applied to a plurality of different working conditions, redesign and manufacture of the temperature reducer are not needed according to the temperature reducing range, and the cost is reduced.

Description

Pulsating heat pipe temperature reduction device and temperature reduction control system

Technical Field

The utility model relates to the technical field of heat exchange equipment, in particular to a pulsating heat pipe temperature reduction device and a temperature reduction control system.

Background

Attemperators are important attemperation devices in systems for power plants, industrial steam emissions, and the like. In actual operation, the temperature of steam fluctuates up and down along with the influence of factors such as fuel property, boiler load and the like, and when the steam can not meet the parameter requirements, the temperature of the steam is regulated through a desuperheater.

In the related art, a water spraying attemperator and a surface attemperator are proposed, but when the attemperator is used for working conditions with different attemperation amplitudes, the attemperator is required to be redesigned according to the size and model of the attemperator according to attemperation requirements, the attemperator has low universality, the redesign and production can cause cost increase, and the attemperator in the related art is required to stop running when being cleaned, so that the working efficiency is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the heat exchange area can be adjusted by controlling the plurality of subchambers to selectively feed cold end medium, and the adjustability of the steam temperature reduction amplitude can be further realized, so that the temperature reduction device can be flexibly applied to a plurality of different working conditions, redesign and manufacture of the temperature reducer according to the temperature reduction amplitude are not needed, and the cost is reduced. In addition, because the cooling chamber is divided into a plurality of independent subchambers, can be according to the dirt degree selectivity washing of different subchambers, wash conveniently, and when the portion subchambers are washd to the branch, other subchambers can normally let in cold junction medium, can realize online cleaning promptly, need not to stop production.

The embodiment of the utility model also provides a temperature reduction control system.

The pulsating heat pipe temperature reducing device of the embodiment of the utility model comprises: the cold source chamber comprises a plurality of spaced subchambers, each subchamber comprises a medium inlet and a medium outlet which are opposite in the flowing direction of a medium, the medium inlets of any subchamber are externally connected with a cold end medium conveying pipeline, and the heat source chamber is externally connected with a temperature reduction main steam pipeline; the closed pulsating heat pipes are arranged in the heat source chamber in a penetrating mode, the condensing sections of the closed pulsating heat pipes are correspondingly arranged in the subchambers in a penetrating mode, and the bottom of the heat source chamber is provided with a condensed water outlet.

In some embodiments, the pulsating heat pipe temperature reducing device further comprises an insulation chamber, the insulation chamber is arranged between the cold source chamber and the heat source chamber in an insulation way, an insulation material layer is filled in the insulation chamber, and the closed pulsating heat pipe of the closed pulsating heat pipe heat exchanger is arranged on the insulation chamber in a penetrating way.

In some embodiments, the heat source chamber is tubular in cross section, and the heat source chamber has the same pipe diameter and wall thickness as the temperature-reducing main steam pipe.

In some embodiments, the plurality of subchambers are sequentially arranged in the circumferential direction of the heat source chamber, the closed pulsating heat pipe in the subchamber positioned in the middle passes through the center of the pipeline of the heat source chamber, and the length sizes of the plurality of groups of closed pulsating heat pipes are gradually increased along the direction adjacent to the subchamber in the middle.

In some embodiments, the plurality of subchambers gradually increase in size along the length of the closed pulsating heat pipe in a direction adjacent to the intermediate subchambers.

In some embodiments, a plurality of baffles extending along the length direction of the heat source chamber are arranged in the heat source chamber, the baffles are arranged at intervals in the circumferential direction of the heat source chamber, and one subchamber is formed between every two adjacent baffles.

In some embodiments, each set of closed pulsating heat pipes includes a plurality of pulsating heat pipes spaced apart along the media flow direction.

In some embodiments, the heat insulation chamber comprises a first partition plate and a second partition plate which are arranged at intervals along the length direction of the closed pulsating heat pipe, the heat insulation layer is filled between the first partition plate and the second partition plate, the first partition plate and the second partition plate are respectively provided with an assembly groove, and the closed pulsating heat pipe penetrates through the assembly grooves and is in sealing connection with the groove walls of the assembly grooves.

In some embodiments, the first separator is a thick plate and the second separator is a thin plate.

The temperature reduction control system comprises a controller, a cold end medium conveying pipeline, a temperature reduction main steam pipeline and the pulsating heat pipe temperature reduction device, wherein the controller is arranged on the cold end medium conveying pipeline to control the on-off of any one of the plurality of subchambers and the cold end medium conveying pipeline, and the temperature reduction main steam pipeline is communicated with the heat source chamber.

According to the temperature reduction control system provided by the embodiment of the utility model, by adopting the pulsating heat pipe temperature reduction device, a cold end medium can be selectively introduced by controlling the plurality of subchambers, and the heat exchange area is adjusted, so that the adjustability of the temperature reduction amplitude of steam is realized, and the temperature reduction control system can be flexibly applied to a plurality of different working conditions.

The pulsating heat pipe temperature reducing device and the temperature reducing control system have the advantages and technical effects of the independent claims.

Drawings

Fig. 1 is a schematic structural view of a pulsating heat pipe attemperator according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a pulsating heat pipe attemperator according to an embodiment of the utility model.

Fig. 3 is a schematic view of the structure of a partition plate of a pulsating heat pipe attemperator according to an embodiment of the present utility model.

Reference numerals

The heat-insulating heat pipe comprises a cold source chamber 1, a subchamber 11, a heat source chamber 2, an insulating chamber 3, a first partition plate 4, a second partition plate 5, a closed pulsating heat pipe 6, an assembly groove 7, a condensate water outlet 8 and a baffle plate 9.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The pulsating heat pipe temperature reducing device in the embodiment of the utility model as shown in fig. 1-3 comprises a cold source chamber 1, a heat source chamber 2 and a plurality of groups of driving heat pipes.

Specifically, as shown in fig. 1 and fig. 2, the cold source chamber 1 includes a plurality of spaced subchambers 11, the subchambers 11 include opposite medium inlets and medium outlets in the flowing direction of the medium, the medium inlets of any subchambers 11 are all externally connected with a cold end medium conveying pipeline, the heat source chamber 2 is externally connected with a temperature reduction main steam pipeline, evaporation sections of the multiple groups of closed pulsating heat pipes 6 are arranged in the heat source chamber 2 in a penetrating manner, and condensation sections are correspondingly arranged in the plurality of subchambers 11 in a penetrating manner.

It can be understood that when the temperature of the steam in the main steam pipeline is reduced, the cold end medium introduced into the cold source chamber 1 can exchange heat with the steam through the closed pulsating heat pipe 6 to absorb the heat of the steam, so as to realize the temperature reduction.

In addition, it should be noted that, under different working conditions, the amplitude of the heat reduction required by the steam is also different, and accordingly, the heat exchange area of the closed pulsating heat pipe 6 is also different, specifically, when the steam needs to reduce the temperature by a larger amplitude, the heat exchange area is large enough to meet the heat exchange requirement, and when the steam needs to reduce the temperature by a smaller amplitude, the smaller heat exchange area can meet the heat reduction requirement.

In order to solve the problem, the temperature reducing device of the utility model adopts the closed pulsating heat pipe 6, separates the cold source chamber 1 into a plurality of independent subchambers 11 by utilizing the characteristic that cold and hot ends of the closed pulsating heat pipe 6 are mutually separated, and each subchamber 11 can form an independent heat exchange system with the heat source chamber 2 through a corresponding group of closed pulsating heat pipes 6, so that the heat exchange area can be controlled by utilizing the selective communication of the subchambers 11 and the cold end medium conveying pipeline, specifically, when the steam needs to reduce the temperature to a larger extent, a larger number of subchambers 11 can be controlled to be introduced into the cold end medium so as to increase the heat exchange area, thereby realizing the large-scale temperature reduction requirement, and when the steam needs to reduce the temperature to a smaller extent, a smaller number of subchambers 11 are controlled to be introduced into the cold end medium so as to meet the small-scale temperature reduction requirement. In other words, the utility model can adjust the heat exchange area by controlling the selective communication of the plurality of subchambers 11 and the cold end medium conveying pipeline and adjusting the number of pulsating heat pipes participating in heat exchange, thereby realizing the adjustability of the temperature reduction amplitude and improving the application flexibility of the temperature reduction device.

According to the pulsating heat pipe temperature reduction device provided by the embodiment of the utility model, the cooling chamber comprises the plurality of spaced subchambers 11, the evaporation sections of the plurality of closed pulsating heat pipes 6 are arranged in the heat source chamber 2 in a penetrating manner, and the condensation sections are correspondingly arranged in the plurality of subchambers 11 in a penetrating manner, so that the heat exchange area can be adjusted by controlling the plurality of subchambers 11 to selectively introduce cold end medium, and the adjustability of the steam temperature reduction amplitude is further realized, so that the temperature reduction device can be flexibly applied to a plurality of different working conditions, redesign and manufacture of the temperature reduction device according to the temperature reduction amplitude are not required, and the cost is reduced. In addition, as the cooling chamber is divided into a plurality of independent subchambers 11, the cooling chamber can be selectively cleaned according to the dirt degree of different subchambers 11, the cleaning is convenient, and when the subchambers 11 are cleaned in a divided manner, cold end medium can be normally introduced into the rest subchambers 11, namely, the online cleaning can be realized without stopping production.

In addition, the pulsating heat pipe temperature reducing device adopts the pulsating heat pipe for heat exchange, so that the equipment size can be reduced, the installation is convenient, the heat exchange coefficient can be improved, and the response time of the temperature reducer can be effectively shortened.

Preferably, as shown in fig. 2, the heat source chamber 2 has a tubular cross section, and the heat source chamber 2 has the same pipe diameter and wall thickness as those of the main steam line. Alternatively, the desuperheating main steam line may be directly used as the heat source chamber 2.

Further, as shown in fig. 2, the plurality of sub-chambers 11 are sequentially arranged in the circumferential direction of the heat source chamber 2, and the closed pulsating heat pipes 6 located in the intermediate sub-chambers 11 pass through the center of the pipe of the heat source chamber 2, and the length dimensions of the plurality of groups of closed pulsating heat pipes 6 gradually increase in the direction adjacent to the intermediate sub-chambers 11. Specifically, as shown in fig. 2, a plurality of baffles 9 extending in the longitudinal direction thereof are provided in the heat source chamber 1, the plurality of baffles 9 being arranged at intervals in the circumferential direction of the heat source chamber 2, and one sub-chamber 11 being formed between adjacent baffles 9.

It can be understood that, because the heat source chamber 2 is a tubular member consistent with the structure of the main heat pipe for reducing temperature, the closed pulsating heat pipes 6 transversely penetrate through the heat source chamber 2, so that the closed pulsating heat pipes 6 in a stepped layout can enable the closed pulsating heat pipes 6 at different positions to be abutted against the inner side walls of the heat source chamber 2, thereby enabling the closed pulsating heat pipes 6 to completely penetrate through the inner space of the heat source chamber 2, and further enabling the steam and the cold end medium to fully exchange heat.

Preferably, as shown in fig. 2, the plurality of sub-chambers 11 gradually increases in size in the length direction of the closed pulsating heat pipe 6 in the direction adjacent to the intermediate sub-chamber 11.

Preferably, as shown in fig. 1, each group of closed pulsating heat pipes 6 includes a plurality of pulsating heat pipes arranged at intervals in the medium flow direction. Thus, the heat exchange area and thus the heat exchange amount of the plurality of closed pulsating heat pipes 6 can be increased.

In some embodiments, as shown in fig. 1 and 2, the pulsation temperature reducing device further comprises an insulation chamber 3, the insulation chamber 3 is arranged between the cold source chamber 1 and the heat source chamber 2 in an isolated manner, an insulation material layer is filled in the insulation chamber 3, and a closed pulsation heat pipe 6 of the closed pulsation heat pipe 6 heat exchanger is arranged on the insulation chamber 3 in a penetrating manner.

When the pulsating heat pipe heat exchanger is used, a steel plate with larger thickness is arranged between the cold source chamber 1 and the heat source chamber 2 for heat insulation, and the heat insulation material layer is filled in the heat insulation chamber 3 to replace the original steel plate so that the heat insulation section of the pulsating heat pipe penetrating through the heat insulation chamber is not contacted with a heat source medium or a cold source medium, thereby simplifying the production process and reducing the cost and the whole weight of the temperature reduction device.

Further, as shown in fig. 1, the heat insulation chamber 3 includes a first partition plate 4 and a second partition plate 5 arranged at intervals along the length direction of the closed pulsating heat pipe 6, a heat insulation material layer is filled between the first partition plate 4 and the second partition plate 5, assembly grooves 7 are respectively formed in the first partition plate 4 and the second partition plate 5, and the closed pulsating heat pipe 6 penetrates through the assembly grooves 7 and is in sealing connection with the groove walls of the assembly grooves 7. Therefore, when the assembly requirements of the heat insulation sections with different lengths are matched, only the spacing between the partition plates is required to be adjusted to increase the filling thickness of the heat insulation material, redesign and replacement are not required, the design difficulty and cost are reduced, and the universality of the pulsating heat pipe heat exchange device is improved.

Preferably, the first separator 4 is a thick plate and the second separator 5 is a thin plate. Therefore, the first partition plate 4 can be used as a bearing piece of the closed pulsating heat pipe 6 and the heat insulation material layer, the first partition plate 4 is arranged in a thick plate, the cold source chamber 1 is convenient to seal, the second partition plate 5 does not need to bear load, and only needs to be in sealing connection with the closed pulsating heat pipe 6, so that the second partition plate 5 can be designed into a thin plate, and materials are reduced.

Preferably, the first separator 4 and the second separator 5 are each arc-shaped stainless steel plates.

Preferably, a certain space is reserved at the outlet side of the heat source chamber 2 to balance the steam temperature.

Optionally, the bottom of the heat source chamber 2 is provided with a condensate outlet 8.

Optionally, the pulsating heat pipe temperature reducing device of the utility model can also directly use the temperature reducing main steam pipeline as a heat source chamber, namely, one end of the closed pulsating heat pipe is penetrated in the cold source chamber 1, the other end is penetrated in the temperature reducing main steam pipeline, and the outer wall of the temperature reducing main steam pipeline can be directly used as the second baffle 5.

The temperature reduction control system of the embodiment of the utility model comprises a controller, a cold end medium conveying pipeline, a temperature reduction main steam pipeline and the pulsating heat pipe temperature reduction device of the embodiment, wherein the controller is arranged on the cold end medium conveying pipeline to control the on-off of any one of the plurality of subchambers 11 and the cold end medium conveying pipeline, and the temperature reduction main steam pipeline is communicated with the heat source chamber 2.

According to the temperature reduction control system provided by the embodiment of the utility model, by adopting the pulsating heat pipe temperature reduction device, cold end medium can be selectively introduced by controlling the plurality of subchambers 11, and the heat exchange area is adjusted, so that the adjustability of the temperature reduction amplitude of steam is realized, and the temperature reduction control system can be flexibly applied to a plurality of different working conditions.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A pulsating heat pipe attemperator, comprising:

the cold source chamber comprises a plurality of spaced subchambers, each subchamber comprises a medium inlet and a medium outlet which are opposite in the flowing direction of a medium, the medium inlets of any subchamber are externally connected with a cold end medium conveying pipeline, the heat source chamber is externally connected with a temperature reduction main steam pipeline, and the bottom of the heat source chamber is provided with a condensed water outlet;

the evaporation sections of the closed pulsating heat pipes penetrate through the heat source chambers, and the condensation sections of the closed pulsating heat pipes penetrate through the subchambers.

2. The pulsating heat pipe attemperator of claim 1, further comprising an insulation chamber, the insulation chamber being disposed between the cold source chamber and the heat source chamber with a layer of insulation material filled therein, the closed pulsating heat pipe of the closed pulsating heat pipe heat exchanger being disposed through the insulation chamber.

3. The pulsating heat pipe attemperator according to claim 1, wherein the heat source chamber has a tubular cross section, and the heat source chamber has the same pipe diameter and wall thickness as the attemperating main steam pipe.

4. A pulsating heat pipe temperature reduction device as claimed in claim 3, wherein a plurality of the sub-chambers are sequentially arranged in a circumferential direction of the heat source chamber, and the closed pulsating heat pipes located in the sub-chambers in the middle pass through a pipe center of the heat source chamber, and the length dimensions of the plurality of groups of the closed pulsating heat pipes gradually increase in a direction adjacent to the sub-chambers in the middle.

5. The pulsating heat pipe attemperator of claim 4, wherein the plurality of sub-chambers gradually increase in size in the length direction of the closed pulsating heat pipe in the direction of the sub-chambers adjacent to the center.

6. The pulsating heat pipe attemperator according to claim 4, wherein a plurality of baffles extending in a longitudinal direction thereof are provided in the heat source chamber, the plurality of baffles being arranged at intervals in a circumferential direction of the heat source chamber, one of the subchambers being formed between adjacent baffles.

7. The pulsating heat pipe attemperator of claim 1, wherein each set of closed pulsating heat pipes comprises a plurality of pulsating heat pipes spaced apart along the media flow direction.

8. The pulsating heat pipe temperature reduction device according to claim 2, wherein the heat insulation chamber comprises a first partition plate and a second partition plate which are arranged at intervals along the length direction of the closed pulsating heat pipe, the heat insulation material layer is filled between the first partition plate and the second partition plate, the first partition plate and the second partition plate are respectively provided with an assembly groove, and the closed pulsating heat pipe penetrates through the assembly grooves and is in sealing connection with the groove walls of the assembly grooves.

9. The pulsating heat pipe attemperator of claim 8, wherein the first barrier is a thick plate and the second barrier is a thin plate.

10. A temperature reduction control system, comprising a controller, a cold end medium conveying pipeline, a temperature reduction main steam pipeline and a pulsating heat pipe temperature reduction device as claimed in any one of claims 1 to 9, wherein the controller is arranged on the cold end medium conveying pipeline to control the on-off of any one of a plurality of subchambers and the cold end medium conveying pipeline, and the temperature reduction main steam pipeline is communicated with the heat source chamber.