CN-224230394-U - Heat insulation device for reducing heat transfer loss in absorption heat exchanger

Abstract

The utility model discloses a heat insulation device for reducing heat transfer loss in an absorption heat exchanger, which comprises the absorption heat exchanger, and a heat insulation layer arranged between a generator and a condenser of the absorption heat exchanger, wherein the height of the heat insulation layer is 30mm, aluminum plating is required on the surface of an inner steel plate in the heat insulation layer, and an aluminum plated film is formed on the surface of the steel plate, so that the radiant heat transfer quantity can be reduced. And 1 vacuum diaphragm valve is arranged on each heat insulation layer, and after the production and the operation of the absorption heat exchanger are finished, the vacuum pump is used for pumping out the air in the heat insulation layers to form a vacuum heat insulation layer. The vacuum heat insulation layer can prevent the high-temperature generator in the absorption heat exchanger from transferring heat to the low-temperature condenser and the low-temperature evaporator.

Inventors

• ZHEN PENG
• Bi xiaoxi
• YU GUOQUAN
• ZHU XU
• YANG ENBO
• LUO GANG
• SUN WEI
• ZHAO QINGWEI
• ZHANG WEIGUANG
• TIAN XIAOLIN
• SUN MENG
• CONG QUAN

Assignees

• 内蒙古富龙供热工程技术有限公司

Dates

Publication Date

20260512

Application Date

20250412

Claims (3)

1. 1. The utility model provides a reduce heat insulation device of inside heat transfer loss of absorption heat exchanger, it includes the absorption heat exchanger, sets up the condenser above the absorption heat exchanger, sets up the evaporimeter below, its characterized in that: and 1 heat insulation layer is arranged between the generator and the condenser, 1 heat insulation layer is arranged between the generator and the evaporator, the height of the heat insulation layer is 30 mm, and aluminum plating is required to be performed on steel plates inside the heat insulation layer, so that an aluminum plated film is formed.
2. 2. The heat insulation device for reducing heat transfer loss in an absorption heat exchanger according to claim 1, wherein each heat insulation layer is provided with 1 vacuum diaphragm valve in a welding mode, 2 outlet section pipelines of the vacuum diaphragm valves are gathered on 1 main pipe, and the main pipe is provided with 1 vacuum diaphragm valve in a welding mode.
3. 3. A heat insulating device for reducing heat transfer losses within an absorption heat exchanger according to claim 2, wherein the outlet section of the vacuum diaphragm valve on the manifold is connected to an automatic evacuation system conduit of the absorption heat exchanger.

Description

Heat insulation device for reducing heat transfer loss in absorption heat exchanger Technical Field The utility model belongs to the technical field of absorption heat exchangers, and particularly relates to a heat insulation device for reducing heat transfer loss in an absorption heat exchanger. Background An absorption heat exchanger is a heat supply technical device based on absorption circulation, and the device is already popularized and applied in urban central heating systems. The absorption heat exchanger comprises a generator, a condenser, an evaporator and an absorber, the flow of high-temperature hot water is the generator-evaporator, the flow of low-temperature heat supply network water is the absorber-condenser, the generator, the condenser and the evaporator are separated by only one layer of steel plates, and heat exchange exists between the contacted parts due to the fact that the temperature of hot water introduced into the generator is high and the temperature of the condenser and the evaporator is low in the operation process of the absorption heat exchanger, so that high-temperature energy is lost, and the heat exchange function and efficiency are reduced. Disclosure of Invention The utility model aims to overcome the defects of the prior art and provide the heat insulation device for reducing the heat transfer loss in the absorption heat exchanger, which effectively solves the heat transfer problem from a high-temperature generator to a low-temperature condenser and an evaporator and improves the heat exchange effect of the absorption heat exchanger. The utility model adopts the technical scheme that the heat insulation device for reducing the heat transfer loss in the absorption heat exchanger comprises a heat insulation plate which is added between a generator, a condenser and an evaporator to form a heat insulation layer, a diaphragm valve is arranged on a cavity of the heat insulation layer, the absorption heat exchanger is provided with an automatic vacuumizing system device, the diaphragm valve of the heat insulation layer is connected to the automatic vacuumizing system, and a vacuum layer is formed in the heat insulation layer. The lithium bromide solution inside the generator and the high-temperature hot water generally adopt reverse flow, the high-temperature hot water flows inside the heat exchange tube, the lithium bromide solution falls on the outside of the heat exchange tube to be distributed, the lithium bromide solution after full heat exchange is converged on the generator bottom plate and flows into the absorber through the pipeline, and if the generator and the condenser or the evaporator are insulated by only one layer of steel plate, heat transfer and exchange can be carried out on two sides with different temperatures. The heat-insulating layer is added between the generator and the condenser and between the generator and the evaporator, so that mediums with different temperatures at two sides are not in direct contact, the vacuum diaphragm valve is arranged on the cavity of the heat-insulating layer, and the vacuum pumping device of the absorption heat exchanger is utilized to pump out air in the heat-insulating layer. Furthermore, a reflective material is added on the surface of the plate inside the heat insulation layer, aluminum is plated on the surface of the plate inside the heat insulation layer to form a film, and the height of the heat insulation layer is 30mm, and the width and the length of the heat insulation layer are related to the size of the absorption heat pump heat exchanger body. The vacuum barrier can reduce heat transfer. The heat transfer mainly comprises three modes of heat conduction, heat convection and heat radiation, and the vacuum interlayer has inhibition effect on the three heat transfer modes, compared with the prior art, the utility model has the beneficial effects that: (1) The heat conduction is inhibited, the heat conduction needs to be transferred through a medium, and the medium such as air is hardly contained in the vacuum interlayer, so that gas molecules are few, the heat conduction path is greatly reduced, and the heat conduction efficiency is effectively reduced. (2) Heat convection is prevented, namely heat is transferred by virtue of macroscopic flow of fluid, and heat cannot be transferred by virtue of the fact that no fluid exists in a vacuum environment, so that heat transfer in a convection mode is prevented. (3) Reducing heat radiation, namely, although vacuum can not completely block heat radiation, most heat radiation can be reflected back by adding a reflecting material and an aluminized film on the surface of the interlayer, so that heat transfer in a radiation mode is reduced. Drawings FIG. 1 is a schematic perspective view of a heat insulating apparatus for reducing heat transfer loss in an absorption heat exchanger according to the present utility model; FIG. 2 is a schematic view of an insulation apparatus f