CN213688014U

CN213688014U - High-capacity phase-change heat storage device for plateau type

Info

Publication number: CN213688014U
Application number: CN202021968586.8U
Authority: CN
Inventors: 金翼; 翁立奎; 宋鹏飞; 张叶龙; 贾亦轩; 姜琳; 姜金玉; 牛杰
Original assignee: Nanjing Jinhe Energy Material Co ltd; Jiangsu Jinhe Energy Technology Co ltd
Current assignee: Nanjing Jinhe Energy Material Co ltd; Jiangsu Jinhe Energy Technology Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-07-13
Anticipated expiration: 2030-09-10

Abstract

The application discloses heat device for plateau type high-capacity phase change heat storage, and belongs to the technical field of heat energy storage and management of high-capacity power storage systems in the power industry. Including the outer wall, the thermal insulation baffle, a plurality of electric heating module, a plurality of heat-retaining module, the electric control unit, circulating fan, the heat exchanger, hot subscriber unit, electric heating module is formed by the concatenation of a plurality of porous ceramic supporter, the porous ceramic supporter is squarely, in four sides of porous ceramic supporter, wherein the side of two mutual symmetries all is equipped with a plurality of ventilation holes, the side of two other mutual symmetries all is equipped with the heating hole that is used for placing heating element, a plurality of porous ceramic supporters are when the concatenation, communicate each other between the ventilation hole on two horizontal adjacent porous ceramic supporters or between the heating hole. The characteristic of strong heat exchange capability of the porous ceramic is utilized, the temperature of the support body is effectively reduced, the insulating property of the support body is guaranteed, the resistance in the heat exchange process is greatly reduced, and the guarantee is provided for the operation of the heat storage device.

Description

High-capacity phase-change heat storage device for plateau type

Technical Field

The application relates to the technical field of heat energy storage and management of high-capacity power storage systems in the power industry, in particular to a plateau high-capacity phase-change heat storage heat utilization device.

Background

The solid heat storage device is widely used as a user side heat storage device due to the characteristics of large heat storage density, small occupied area and the like, air driven by a fan is used as a heat transfer working medium in the solid heat storage device, and gaps among solid bricks are used as fluid channels to finish heat storage and release processes of solid heat storage materials (such as magnesia bricks and the like). The utility model discloses a utility model with publication number CN205678754U discloses a use low ebb electricity or abandon wind-powered electricity generation and heat supply system who just has the heat-retaining function, the device has utilized high insulating refractory material as electric heating element insulation support type frame, utilize organic or inorganic sensible heat storage material, latent heat or phase transition heat storage material, composite construction heat storage material or the combination between them as heat-retaining medium, realize the storage of heat energy, the device has the energy storage capacity big, the device is small, arrange advantages such as nimble, be applicable to the low ebb electricity of user side or abandon wind-powered electricity generation and make heat storage.

However, in the research process of the present application, the inventor finds that, for a plateau area, the heat exchange capacity of a heat exchange working medium is poor due to the fact that air is thin, the insulation performance of a refractory material of an insulation support of the adopted high-voltage (10 KV-110 KV) direct heating mode is increased along with the increase of temperature, and the insulation performance of the material is easily decreased due to the poor heat exchange capacity of air under the plateau condition, so that insulation is often required to be ensured by increasing the insulation distance, the volume of a module is increased, and the increase rate is about 20%. In addition, in order to guarantee heat exchange power, the heat exchange air quantity is increased, heat exchange resistance is increased, and the influence on the power consumption of the fan is obvious.

SUMMERY OF THE UTILITY MODEL

The application provides a plateau type high-capacity phase-change heat storage heat device to solve the problems in the background art.

The plateau type high-capacity phase-change heat storage device comprises an outer wall, a heat insulation partition plate, a plurality of electric heating modules, a plurality of heat storage modules, an electric power control unit, a circulating fan, a heat exchanger and a heat user unit, wherein the outer wall is closed and provided with a heat insulation layer, the heat insulation partition plate is horizontally arranged in the outer wall, two ends and the bottom of the heat insulation partition plate and the inner wall of the outer wall form a fluid channel, the electric heating modules and the heat storage modules are sequentially arranged on the heat insulation partition plate at intervals along the length direction of the heat insulation partition plate, the electric power control unit is respectively communicated with each electric heating module, the circulating fan and the heat exchanger are arranged in, wherein the electric heating module and the heat storage module are both provided with air flow channels which are communicated with each other, the air flow channel is used for communicating the fluid channels at the two sides and the bottom, and the circulating fan is used for causing the fluid in the outer wall to form circulation in the fluid channels and the air flow channel;

the electric heating module is formed by splicing a plurality of porous ceramic supporting bodies, the porous ceramic supporting bodies are square, and in four sides of the porous ceramic supporting bodies, two mutually symmetrical sides are provided with a plurality of ventilation holes, the other two mutually symmetrical sides are provided with heating holes for placing heating elements, and the ventilation holes or the heating holes on the two transversely adjacent porous ceramic supporting bodies are communicated with each other when the porous ceramic supporting bodies are spliced.

Preferably, the circulation fan is located at the inlet of the fluid into the airflow channel.

Preferably, each of the electric heating modules is located at a front end of each of the heat storage modules in an air flow direction.

Preferably, the prototype high-capacity phase-change heat storage heat utilization device further comprises a fan controller for controlling the rotating speed of the circulating fan, the fan controller is communicated with the heat consumer unit, and the fan controller can control and adjust the flow of circulating air formed by the circulating fan according to the heat consumer demand.

Preferably, the power control unit is located outside the outer wall and is communicated with the electric heating chamber, and is used for controlling the power and the temperature of the electric heating element, so that the electric heating chamber can safely and stably output heat energy during heat storage.

Preferably, the electric heating element is a high voltage heating wire.

Preferably, the heat storage module is made of an organic or inorganic sensible heat storage material, a latent heat or phase change heat storage material, a composite structure heat storage material or a combination thereof, and the service temperature range of the heat storage module is-50 to 1000 ℃.

Preferably, the heat consumer unit includes a temperature controller for monitoring the temperature and flow rate in the fluid channel, a heat consumer, and a circulation pump, wherein the temperature controller controls the temperature and flow rate of the heat supply fluid according to the demand of the heat consumer, the exhaust port and the heat inlet of the heat consumer are correspondingly communicated with the inlet and the outlet of the heat exchanger, respectively, and the circulation pump is disposed on a pipeline through which the exhaust port of the heat consumer is communicated with the inlet of the heat exchanger.

Preferably, the heat-insulating layer and the heat-insulating partition plate can be single-layer or multi-layer, and the material is low-thermal conductivity material, and the low-thermal conductivity material is foam plastic, carbonized cork, vermiculite, foam glass, ceramic fiber, light heat-insulating cotton, microporous calcium silicate, perlite or glass wool.

The application provides a heat device for high prototype high capacity phase transition heat storage has following beneficial effect:

1. the electric heating module is designed by splicing a plurality of porous ceramic support bodies, and the characteristic of strong heat exchange capacity of the porous ceramic is utilized, so that the temperature of the support bodies is effectively reduced, the insulating property of the support bodies is ensured, the resistance in the heat exchange process is greatly reduced, and the guarantee is provided for the operation of the heat storage device.

2. The temperature distribution stability inside the device is improved, the mode of straight pipe channels is adopted between two adjacent porous ceramic supporting bodies, the air flow process from top to bottom is reduced, the temperature distribution condition of upper heat and lower cold caused by the heating process of the heating wire is slowed down, the overall heat uniformity of the device is improved, and the heat storage capacity of the device is effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of a plateau-type high-capacity phase-change heat storage device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a porous ceramic support in the high-altitude high-capacity phase-change heat storage device according to the embodiment of the present application.

Wherein: 1-outer wall, 2-fluid channel, 3-heat insulation baffle, 4-electric heating module, 401-porous ceramic support, 402-vent, 403-heating hole, 5-heat storage module, 6-electric control unit, 7-circulating fan, 8-heat exchanger, 9-heat user unit, 90-temperature controller, 91-heat user, 92-circulating pump and 10-fan controller.

Detailed Description

In the following, the technical solutions in the embodiments will be clearly and completely described 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.

Referring to fig. 1 and 2, the plateau-type high-capacity phase-change heat storage device includes an outer wall 1 forming a closed structure and having a heat insulation layer, a heat insulation partition plate 3 horizontally disposed in the outer wall 1 and having fluid channels 2 formed at both ends and bottom thereof and an inner wall of the outer wall 1, a plurality of electric heating modules 4 and a plurality of heat storage modules 5 sequentially disposed on the heat insulation partition plate 3 at intervals along a length direction of the heat insulation partition plate 3, an electric power control unit 6 respectively communicated with each electric heating module 4, a circulating fan 7 and a heat exchanger 8 disposed in the fluid channels 2 at the bottom of the heat insulation partition plate 3, and a heat consumer unit 9 communicated with both ends of the heat exchanger 8, wherein the electric heating modules 4 and the heat storage modules 5 are respectively provided with air flow channels communicated with each other, the air flow channels communicate the fluid channels 2 at both sides and bottom thereof, the circulating fan 7 is used for causing the fluid in the outer wall 1 to form circulation in the fluid channel 2 and the airflow channel;

the electric heating module 4 is formed by splicing a plurality of porous ceramic support bodies 401, the porous ceramic support bodies 401 are square, and in four side faces of the porous ceramic support bodies 401, wherein two mutually symmetrical side faces are respectively provided with a plurality of vent holes 402, the hole pattern of the vent holes 402 can be a square hole or a round hole and the like, the aperture size of the vent holes is 0.5 multiplied by 0.5 mm-10 mm or phi 0.5 mm-phi 10mm, phi is the diameter, the other two mutually symmetrical side faces are respectively provided with a heating hole 403 for placing a heating element, the electric heating element is a high-pressure electric heating wire, and when the plurality of porous ceramic support bodies 401 are spliced, the vent holes 402 or the heating holes 403 on the two transversely adjacent porous ceramic support bodies 401 are mutually communicated.

Specifically, the circulating fan 7 is located at an inlet of the airflow channel, and the circulating fan 7 is a low-power-consumption medium-high-temperature variable-frequency fan. Each electric heating module 4 is located at the front end of each heat storage module 5 in the airflow direction.

Specifically, the plateau type high-capacity phase-change heat storage heat utilization device further comprises a fan controller 10 for controlling the rotation speed of the circulating fan 7, wherein the fan controller 10 is communicated with the heat consumer unit 9 and can control and adjust the flow of circulating air formed by the circulating fan 7 according to the heat consumer demand.

Specifically, the power control unit 6 is located outside the outer wall 1, and is communicated with the electric heating chamber, and is used for controlling the power and the temperature of the electric heating element, so that the electric heating chamber can safely and stably output heat energy during heat storage.

Specifically, the heat storage module 5 is made of an organic or inorganic sensible heat storage material, a latent heat or phase change heat storage material, a composite structure heat storage material or a combination thereof, and the service temperature range of the heat storage module 5 is-50 to 1000 ℃.

Specifically, the heat consumer unit 9 includes a temperature controller 90 for monitoring the temperature and flow rate in the fluid channel 2, a heat consumer 91, and a circulation pump 92, wherein the temperature controller 90 controls the temperature and flow rate of the heating fluid according to the requirement of the heat consumer 91, the exhaust port and the heat inlet of the heat consumer 91 are correspondingly communicated with the inlet and the outlet of the heat exchanger 8, respectively, and the circulation pump 92 is disposed on a pipeline through which the exhaust port of the heat consumer 91 is communicated with the inlet of the heat exchanger 8.

Specifically, the heat-insulating layer and the heat-insulating partition plate 3 can be single-layer or multi-layer, and are made of materials with low thermal conductivity coefficient, and the materials with low thermal conductivity coefficient are foam plastics, carbonized cork, vermiculite, foam glass, ceramic fiber, light heat-insulating cotton, microporous calcium silicate, perlite or glass wool.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. The plateau type high-capacity phase-change heat storage device comprises an outer wall (1) which is closed and provided with a heat insulation layer, a heat insulation partition plate (3) which is horizontally arranged in the outer wall (1) and of which two ends and the bottom form a fluid channel (2) with the inner wall of the outer wall (1), a plurality of electric heating modules (4) and a plurality of heat storage modules (5) which are sequentially arranged on the heat insulation partition plate (3) at intervals along the length direction of the heat insulation partition plate (3), an electric control unit (6) which is respectively communicated with each electric heating module (4), a circulating fan (7) and a heat exchanger (8) which are arranged in the fluid channel (2) at the bottom of the heat insulation partition plate (3), and heat user units (9) which are communicated with two end parts of the heat exchanger (8), wherein air flow channels which are communicated with each other are respectively arranged on the electric heating modules (4) and the heat storage modules (5), the air flow channel is communicated with the fluid channel (2) at the two sides and the bottom, and the circulating fan (7) is used for causing the fluid in the outer wall (1) to form circulation in the fluid channel (2) and the air flow channel, and is characterized in that:

the electric heating module (4) is formed by splicing a plurality of porous ceramic supporting bodies (401), the porous ceramic supporting bodies (401) are square, and in four sides of the porous ceramic supporting bodies (401), two symmetrical sides are provided with a plurality of vent holes (402), the other two symmetrical sides are provided with heating holes (403) for placing heating elements, and when the porous ceramic supporting bodies (401) are spliced, the vent holes (402) on the two transversely adjacent porous ceramic supporting bodies (401) are communicated with each other or the heating holes (403) are communicated with each other.

2. The plateau-type high-capacity phase-change heat storage device as claimed in claim 1, wherein the circulating fan (7) is located at the inlet of the fluid into the airflow channel.

3. The high altitude type high capacity phase change heat storage apparatus as claimed in claim 1 or 2, wherein each of the electric heating modules (4) is located at the front end of each of the heat storage modules (5) in the air flow direction.

4. The plateau-type high-capacity phase-change heat storage device as claimed in claim 1, further comprising a fan controller (10) for controlling the rotation speed of the circulating fan (7), wherein the fan controller (10) is communicated with the heat consumer unit (9) and can control and adjust the flow of circulating air formed by the circulating fan (7) according to the demand of the heat consumer.

5. The plateau-type high-capacity phase-change heat storage device as claimed in claim 1, wherein the power control unit (6) is located outside the outer wall (1) and is in communication with the electric heating chamber, and is used for controlling the power and temperature of the electric heating element, so that the electric heating chamber can safely and stably output heat energy during heat storage.

6. The high altitude, high capacity phase change thermal storage thermal device of claim 5, wherein the electrical heating element is a high voltage heating wire.

7. The plateau-type high-capacity phase-change heat storage device as claimed in claim 1, wherein the heat storage module (5) is made of an organic or inorganic sensible heat storage material, latent heat or phase-change heat storage material, composite structure heat storage material or a combination thereof, and the service temperature range of the heat storage module (5) is-50-1000 ℃.

8. The high altitude type high capacity phase change heat storage thermal device as claimed in claim 1, wherein the thermal user unit (9) comprises a temperature controller (90) for monitoring the temperature and flow rate in the fluid channel (2), a thermal user (91), and a circulation pump (92), wherein the temperature controller (90) controls the temperature and flow rate of the heat supply fluid according to the requirement of the thermal user (91), the exhaust port and the heat inlet of the thermal user (91) are respectively communicated with the inlet and the outlet of the heat exchanger (8), and the circulation pump (92) is disposed on the pipeline where the exhaust port of the thermal user (91) is communicated with the inlet of the heat exchanger (8).

9. The plateau-type high-capacity phase-change heat storage thermal device as claimed in claim 1, wherein the thermal insulation layer and the thermal insulation partition plate (3) can be single-layer or multi-layer, and are made of materials with low thermal conductivity coefficient, and the materials with low thermal conductivity coefficient are foam plastics, carbonized cork, vermiculite, foam glass, ceramic fiber, light thermal insulation cotton, microporous calcium silicate, perlite or glass wool.