CN201476336U - Straight through vacuum sleeve solar collector - Google Patents

Abstract

The utility model discloses a straight-through vacuum sleeve type solar heat collector which is composed of double-layer transparent glass straight-through pipe, a medium heating pipe, heat insulation sealing rings and an air pressure balancing opening, wherein the double-layer transparent glass straight-through vacuum pipe is eccentric pipes which are pumped to vacuum between two layers. The medium heating pipe is manufactured by the medium material with high heat conductivity coefficient and is equipped in the inner pipe of the double-layer transparent glass straight-through vacuum pipe. The length of the medium heating pipe is larger than that of the straight-through pipe. The two ends are pipe joints which can be used for performing pipe connection. The heat insulation sealing rings are equipped to two ends of the straight-through pipe. A clearance between the straight-through vacuum pipe and the end of the heating pipe is sealed. The air pressure balancing opening is a thin tubular channel which is provided at the heat insulation sealing ring at a random end. The straight-through vacuum sleeve type solar heat collector reduces the cost of solar heat collection, can realize the operation of the heated medium strip, greatly expands the technical approach in converting and utilizing solar energy, and pushes the development of solar energy technology.

Description

Straight through vacuum sleeve solar collector

technical field

The utility model relates to a solar heat collector, in particular to a straight-through vacuum casing type solar heat collector.

current technology

The use of solar energy has attracted great attention from the whole society. The collection and conversion technology of solar energy is the most critical core technology. So far, in addition to the direct conversion of expensive solar panels into electrical energy, solar water heaters are mainly used and have been widely used. The collection and conversion of its thermal energy is still the most advanced way with a single-port vacuum heat collecting tube. However, because it is actually a single-port container that can absorb heat, there are many defects, such as: only intermittent artificial water injection; it must be installed at a position higher than the user, so it is restricted by site conditions; when used in large-scale solar energy projects , the combination is difficult, and it must be transported by water pumps; due to the small thermal conductivity of glass and the disordered flow of water in the tube, the heat transfer efficiency is low; because it can only work under normal pressure, the heating medium is single, and it cannot be used for wider expansion. Ways to utilize solar energy; when heat-collecting tubes are manufactured for surface heat-absorbing treatment, it is easy to cause environmental pollution, etc. In short, the existing heat collection technology seriously limits the further development of solar energy utilization.

Contents of the invention

In view of this, the purpose of this utility model is to provide a kind of straight-through vacuum sleeve type solar heat collector that overcomes the defects of the prior art.

The purpose of the utility model will be further demonstrated through the following detailed description and description.

The utility model is a straight-through vacuum casing type solar heat collector, and its structural characteristics are: the double-layer transparent glass straight-through vacuum tube is a concentric circular tube that is evacuated between the two layers, and the medium heating tube is made of a medium material with high thermal conductivity. , installed in the inner tube of the double-layer transparent glass straight-through vacuum tube, its length is longer than the straight-through tube, and the two ends are pipe joints that can be connected to the pipeline. The gap between the parts is sealed, and the air pressure balance port is located in a very thin tubular channel on the heat insulation ring at either end.

Its working principle is: sunlight shines on the medium heating tube through the transparent straight-through vacuum glass tube, absorbs heat through the black heat absorbing layer on the outer surface of the medium heating tube, and transfers the heat to the medium inside the tube by the tube wall with high thermal conductivity. The vacuum glass tube has the characteristics of high light transmission and high heat insulation, and the heat energy absorbed by the medium heating tube will not be lost; according to the heat demand of users and the characteristics of the site, it can be combined into any scale of solar energy in a series, parallel or series-parallel manner. collector (station).

The advancement of the utility model is:

① Due to the pressure-bearing characteristics of the medium heating pipe, after being directly connected to tap water, users can use hot water directly like tap water, without manual water injection, and save power consumption for transmission;

②It does not need to be installed at a high position, and can make full use of various places for installation;

③Because the solar collector tube is a straight-through pipeline type, the heated medium is always in a self-circulation state of one-way and orderly flow from the inlet to the outlet, so the temperature difference between the medium and the tube wall maintains a relatively fixed temperature difference at each part, which greatly improves the heat transfer efficiency.

④ Various methods such as series connection, parallel connection, and series-parallel sharing can be arbitrarily combined into a solar collector station of any scale as easily as pipeline installation, providing core technical support for large-scale utilization of solar energy;

⑤ Adapting to the diversity of media can greatly expand the technical approach of solar energy conversion and utilization, and promote the great development of solar energy technology;

⑥ Avoid environmental pollution caused by chemical spraying on the surface of the inner tube during the manufacturing process of the existing single-port heat collecting tube.

Description of drawings

Fig. 1 is a structural schematic diagram of the straight-through vacuum sleeve type solar heat collector of the present invention.

In the figure: symbol 1 represents the medium heating pipe; symbol 2 represents the pipe interface; symbol 3 represents the straight-through vacuum glass tube; symbol 4 represents the vacuum cavity of the straight-through vacuum glass tube; symbol 5 represents the vacuum seal; symbol 6 represents the heat insulation seal at the upper end Ring; symbol 7 represents the heat insulation sealing ring at the lower end; symbol 8 represents the air pressure balance port.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in the figure, a straight-through vacuum casing solar collector of the present invention is composed of a double-layer transparent glass straight-through pipe, a medium heating pipe, a heat-insulating sealing ring, and an air pressure balance port. Among them, the double-layer transparent glass The straight-through tube is a concentric circular tube that is evacuated between the two layers. The medium heating tube is made of a medium with high thermal conductivity. It is installed inside the inner tube of the double-layer transparent glass straight-through tube. Its length is longer than the straight-through tube. The pipe joint for pipe connection, the heat-insulating ring is installed at the two ports of the straight-through pipe, and the gap between the straight-through pipe and the end of the heating pipe is sealed, and the air pressure balance port is located on a very thin strip of the heat-insulating ring at either end. tubular channel.

Claims (1)

1. A straight-through vacuum sleeve type solar heat collector is composed of a double-layer transparent glass straight-through tube, a medium heating tube, a heat-insulating sealing ring, and an air pressure balance port. It is characterized in that: the double-layer transparent glass straight-through vacuum tube is between two layers It is a concentric circular tube that is pumped into a vacuum. The medium heating tube is made of a medium material with high thermal conductivity. It is installed inside the inner tube of the double-layer transparent glass straight-through vacuum tube. Its length is longer than that of the straight-through tube. , the sealing heat insulation ring is installed at the two ports of the straight-through pipe to seal the gap between the straight-through vacuum pipe and the end of the heating pipe, and the air pressure balance port is a very thin tubular channel located on the heat insulation ring at either end.

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