CN216745637U

CN216745637U - Sleeve type heat exchange and storage structure

Info

Publication number: CN216745637U
Application number: CN202123365898.7U
Authority: CN
Inventors: 范培源; 陈久林; 董子健
Original assignee: Suun Power Co ltd
Current assignee: Suun Power Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-14
Anticipated expiration: 2031-12-29

Abstract

The utility model aims to provide a sleeve type heat exchange and storage structure, which comprises a heat storage body and a shell, wherein the heat storage body and the shell are coaxially sleeved inside and outside, the heat storage body is of a hollow platform body structure, an inner channel is arranged in the heat storage body, one end of the inner channel, with a larger opening area, is an inlet for a heat storage medium, and the other end of the inner channel, with a smaller opening area, is an outlet for the heat storage medium; the shell is a hollow pipe body, a gap between the inner wall of the shell and the outer wall of the heat storage body forms an outer channel, the end with the smaller opening area on the outer channel is a heat releasing medium inlet, and the end with the larger opening area on the outer channel is a heat releasing medium outlet; the heat storage body is used for absorbing and storing the heat of the high-temperature medium by the high-temperature medium passing through the inner channel; and the shell is used for absorbing the heat of the heat storage body and heating the low-temperature medium by passing the low-temperature medium through the outer channel. The heat storage unit solves the problem that a heat source and a cold source in the existing heat storage unit share the same channel and are easy to pollute each other.

Description

Sleeve type heat exchange and storage structure

Technical Field

The utility model belongs to the technical field of heat storage and exchange devices, and particularly relates to a sleeve type heat exchange and storage structure.

Background

The contradiction of unmatched time and space between supply and demand often exists in heat energy utilization, and the use of heat storage equipment is an effective method for solving the contradiction and improving the heat energy utilization rate. In the existing waste heat flue gas heat storage unit structure, heat source gas and cold source gas are taken away from the same channel, and exchange heat with the same contact surface of the heat storage body in different time periods, and interlayer heat transfer is not carried out, so that when one gas is low in cleanliness and harmful, the other gas can be polluted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sleeve type heat exchange and storage structure, which aims to solve the problem that a high-temperature medium and a low-temperature medium in the existing heat storage unit share the same channel and are easy to pollute each other.

The utility model adopts the following technical scheme: a sleeve type heat exchange and storage structure comprises a heat storage body and a shell which are coaxially sleeved inside and outside, wherein the heat storage body is of a hollow platform body structure, an inner channel is arranged in the heat storage body, the end, with a large opening area, of the inner channel is a heat storage medium inlet, and the end, with a small opening area, of the inner channel is a heat storage medium outlet; the shell is a hollow pipe body, a gap between the inner wall of the shell and the outer wall of the heat storage body forms an outer channel, the end with the smaller opening area on the outer channel is a heat releasing medium inlet, and the end with the larger opening area on the outer channel is a heat releasing medium outlet;

the inner channel of the heat storage body is used for allowing a high-temperature medium to pass through, absorbing the heat of the high-temperature medium and storing the heat; the outer channel of the shell is used for passing the low-temperature medium; and the low-temperature medium is used for absorbing the heat of the heat storage body.

Furthermore, a plurality of fins are uniformly connected and arranged between the outer wall of the heat storage body and the inner wall of the shell.

Furthermore, the shell is of a hollow platform body structure, and the extending direction of the outer wall of the shell is parallel to the extending direction of the outer wall of the heat storage body.

Furthermore, the shell is a hollow cylinder, and an inner channel with the gradually reduced or enlarged cross-sectional area is formed between the inner wall of the shell and the outer wall of the heat storage body.

The utility model has the beneficial effects that: the sleeve type heat exchange and storage structure is arranged through the double-layer channel, so that a circulation channel of a high-temperature medium and a circulation channel of a low-temperature medium are isolated, the two media cannot be polluted mutually, and the cleanness of each medium is ensured. Meanwhile, the inner channel and the outer channel are arranged to be of a structure with a contracted sectional area, so that the flow speed of a high-temperature medium or a low-temperature medium is stable, and the heat transfer efficiency is high.

Drawings

Fig. 1 is a schematic structural view of a sleeve type heat exchange and storage structure according to the present invention;

FIG. 2 is another schematic structural view of a sleeve type heat exchange and storage structure according to the present invention;

fig. 3 is a sectional view taken along line a-a in fig. 1 and 2.

The heat storage device comprises a heat storage body 1, a shell 2, fins 3, a heat storage medium inlet 4, a heat storage medium outlet 5, a heat release medium inlet 6 and a heat release medium outlet 7.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The utility model provides a sleeve type heat exchange and heat storage structure, which comprises a heat storage body 1 and a shell 2, wherein the heat storage body 1 and the shell are coaxially sleeved inside and outside, the heat storage body 1 is of a hollow platform body structure, an inner channel is arranged inside the heat storage body, one end of the inner channel, with a larger opening area, is a heat storage medium inlet 4, and one end of the inner channel, with a smaller opening area, is a heat storage medium outlet 5; the shell 2 is hollow pipe body, its inner wall with the space between the heat accumulation body 1 outer wall forms outer passageway, the less one end of outer passageway upper and open area is heat release and uses medium entry 6, the more one end of outer passageway upper and open area is heat release and uses medium export 7.

The heat storage body 1 is made of solid heat storage materials, phase change materials or liquid heat storage materials, a metal shell can be wrapped outside the heat storage body 1, and the heat storage materials and the metal shell form the heat storage body 1 together. The heat storage body 1 can realize a heat storage function. For example, the heat storage body 1 may be made of ceramic or high temperature concrete. The shell 2 is made of a heat-insulating material, can better store the heat stored in the whole structure, and can be made of modified perlite and calcium silicate; the fins 3 may be solid heat storage materials, heat insulating materials or metal materials. In specific implementation, a metal shell can be additionally arranged outside the shell 2 according to actual needs.

The interior of the heat storage body 1 is an inner channel, the outer channel is a space formed between the outer wall of the heat storage body 1 and the inner wall of the shell 2, and the inner channel and the outer channel are completely isolated and sealed. The heat storage body 1 is provided with an inner channel for the high-temperature medium to pass through, absorb the heat of the high-temperature medium and store the heat; the outer shell (2) is provided with an outer channel for the low-temperature medium to pass through; the low-temperature medium is used for absorbing heat of the heat storage body (1).

The high temperature medium and the low temperature medium may be a gas, a liquid or a phase change material. In practical use, the high-temperature medium can be hot flue gas, and the low-temperature medium can be cold air.

The volume of the high-temperature medium is reduced after heat release, so that the high-temperature medium needs to enter from a large-size port and flow out from a small-size port of the inner channel. The volume of the low-temperature medium is increased after heat absorption, so that the low-temperature medium enters from a small-size port of the outer channel and flows out from a large-size port of the outer channel. The inner channel and the outer channel are of variable cross sections, so that the flow velocity of a high-temperature medium or a low-temperature medium is stable, and the heat transfer efficiency is high.

In some embodiments, as shown in fig. 3, a plurality of fins 3 are uniformly connected between the outer wall of the heat storage body 1 and the inner wall of the outer shell 2. A plurality of fins 3 that are set up by the outer wall connection of heat storage body 1 support, fixed connection to shell 2 separates into many airtight passageways with outer passageway.

In some embodiments, as shown in fig. 1, the outer shell 2 has a hollow frustum structure, the extending direction of the outer wall of the outer shell 2 is parallel to the extending direction of the outer wall of the heat storage body 1, and the outer part of the outer shell 2 is in a shape of a contracted circular truncated cone. In this configuration, the flow direction of the high-temperature heat storage medium and the flow direction of the low-temperature heat release medium are in a counter-current direction.

In some embodiments, as shown in fig. 2, the outer shell 2 is a hollow cylinder, the outer wall surface of the outer wall of the outer shell is not shrunk, and an inner channel with a gradually reduced or enlarged cross-sectional area is formed between the inner wall of the outer shell and the outer wall of the heat storage body 1. The inner channel serves as a flow channel for the exothermic medium. In this structure, the flow direction of the high-temperature heat storage medium and the flow direction of the low-temperature heat release medium are parallel.

The use method of the sleeve type heat exchange and storage structure comprises the following steps:

in the heat storage process, a high-temperature medium passes through the heat storage body 1 through the inner channel, the temperature of the high-temperature medium gradually decreases in the passing process, the volume of the high-temperature medium also decreases along with the decrease of the temperature, and if the high-temperature medium is in the channel with the equal section, the flow rate of the high-temperature medium is gradually reduced, and the heat transfer is weakened. However, the inner channel of the utility model is in a contracted platform shape, and the sectional area of the inner channel is gradually reduced, so the flow velocity of the high-temperature medium can be basically kept unchanged, and the heat transfer efficiency is high.

In the heat release process, the low-temperature medium passes through the outer channel, the low-temperature medium takes away heat from the heat storage body 1, the temperature of the low-temperature medium rises, the volume of the low-temperature medium is gradually increased, the sectional area of the outer channel is gradually increased, the flow rate of the low-temperature medium can be kept unchanged, and the heat transfer efficiency is high.

The sleeve type heat exchange heat storage structure is arranged through the double-layer channel, so that a circulation channel of a high-temperature medium and a circulation channel of a low-temperature medium are isolated, the two media cannot be polluted mutually, and the cleanness of each medium is ensured. The inner channel and the outer channel are of variable cross sections, so that the flow velocity of a high-temperature medium or a low-temperature medium is stable, and the heat transfer efficiency is high.

Claims

1. The sleeve type heat exchange and heat storage structure is characterized by comprising a heat storage body (1) and a shell (2) which are coaxially sleeved inside and outside, wherein the heat storage body (1) is of a hollow table body structure, an inner channel is arranged in the heat storage body, one end, with a large opening area, of the inner channel is a heat storage medium inlet (4), and one end, with a small opening area, of the inner channel is a heat storage medium outlet (5); the heat storage device is characterized in that the shell (2) is a hollow pipe body, an outer channel is formed in a gap between the inner wall of the shell (2) and the outer wall of the heat storage body (1), a heat-releasing medium inlet (6) is arranged at one end of the outer channel with a small opening area, and a heat-releasing medium outlet (7) is arranged at one end of the outer channel with a large opening area;

the inner channel of the heat storage body (1) is used for allowing the high-temperature medium to pass through, absorbing the heat of the high-temperature medium and storing the heat; the outer shell (2) is provided with an outer channel for the low-temperature medium to pass through; the low-temperature medium is used for absorbing heat of the heat storage body (1).

2. The tube-in-tube heat exchange heat storage structure as claimed in claim 1, wherein a plurality of fins (3) are uniformly connected between the outer wall of the heat storage body (1) and the inner wall of the shell (2).

3. The tube-in-tube heat exchange heat storage structure as claimed in claim 1 or 2, wherein the outer shell (2) is a hollow platform structure, and the extension direction of the outer wall of the outer shell (2) is parallel to the extension direction of the outer wall of the heat storage body (1).

4. The tube-in-tube heat exchange heat storage structure as claimed in claim 1 or 2, wherein the outer shell (2) is a hollow cylinder, and an inner channel with gradually reduced or enlarged cross-sectional area is formed between the inner wall of the outer shell and the outer wall of the heat storage body (1).