CN207317280U - A kind of solar thermal collector of new heat-exchange device - Google Patents

Abstract

The utility model provides a solar heat collector of a novel heat exchange device, which belongs to the field of heat exchange and comprises a heat collecting tube, a stainless steel conduit, a vacuum tube, an external header and an internal header. One end of the inner header is provided with a medium inlet, and several stainless steel conduits are arranged on both sides of the inner header and communicated with the inner header. The outer header is sleeved on the outer side of the inner header, and the outer header is provided with a medium outlet at the other end of the outer header relative to the medium inlet. There are heat collecting tubes on both sides of the external header and are connected with the external header; the heat collecting tube is set on the outside of the stainless steel conduit, and the stainless steel conduit communicates with the heat collecting tube through an opening at the end, and a cavity is set between the stainless steel conduit and the heat collecting tube. The outside of the heat collecting tube is coated with a heat collecting coating; the vacuum tube is sleeved on the outside of the heat collecting tube and fixed and sealed with the heat collecting tube through a bellows ring; a vacuum chamber is arranged between the vacuum tube and the heat collecting tube.

Description

A new type of heat exchange device solar heat collector

technical field

The utility model relates to the field of heat exchange, in particular to a solar heat collector of a novel heat exchange device.

Background technique

As the level of human energy consumption continues to increase, conventional fossil energy is increasingly exhausted, and the pollutant emissions associated with conventional fossil energy are increasingly unable to meet people's demand for future energy. Solar energy, as an inexhaustible new clean energy, is getting more and more attention, and the development of solar energy is making progress day by day. Among them, solar power generation is an advanced development and application of solar energy. It converts solar energy into electrical energy through certain means to meet the electricity demand of modern society.

At present, domestic and foreign high-temperature solar vacuum heat collectors mostly adopt a straight-through type concentric straight tube structure with inner and outer layers. The outer tube is a vacuum tube, and the stainless steel tube is a metal tube (used to circulate the heat transfer medium). For heat loss, the outer surface of the hollow stainless steel conduit is also covered with a selective absorbing coating.

The Chinese patent with the publication number CN106500365A of a high-temperature heat collecting tube and a solar heat collecting device discloses that the inside of the metal heat collecting tube assembly is formed with a flow channel in the overall "U" shape for the flow of heat transfer medium, and the flow channel The inlet and outlet ports of the heat transfer medium are respectively connected to one of the heat transfer medium interfaces. The heat collecting device disclosed in this solution uses a "U"-shaped flow channel to perform heat exchange, so that a heat exchange medium appears during the heat exchange process. Due to the use of a unidirectional flow direction, the effect of heat exchange is not good, and the efficiency is not high, and a good heat exchange cannot be formed, which will make some media have high temperature and some low temperature, resulting in uneven heat exchange. Therefore need to design a kind of heat exchange efficiency higher, better heat exchange device.

Utility model content

The utility model provides a solar heat collector of a novel heat exchange device, which solves the problem of low heat exchange efficiency of the existing heat exchange device.

The utility model solves the above problems through the following technical solutions:

A solar heat collector of a novel heat exchange device, comprising a heat collecting tube, a stainless steel conduit, a vacuum tube, an outer header and an inner header;

One end of the inner header is provided with a medium inlet, and several stainless steel conduits are arranged on both sides of the inner header and communicated with the inner header; the outer header is set outside the inner header, and the outer header is opposite to the inner header. The other end of the medium inlet is provided with a medium outlet;

There are heat collecting tubes on both sides of the external header and communicate with the external header; the heat collecting tube is set outside the stainless steel conduit, and the stainless steel conduit communicates with the heat collecting tube through an opening at the end, and a cavity is set between the stainless steel conduit and the heat collecting tube. The outside of the heat collecting tube is coated with a heat collecting coating; the vacuum tube is sleeved on the outside of the heat collecting tube and fixed and sealed with the heat collecting tube through a bellows ring; a vacuum chamber is arranged between the vacuum tube and the heat collecting tube.

In the above solution, it is preferable that an insulation layer or a vacuum cavity is provided on the outside of the outer header, and the insulation layer is made of foam material.

In the above solution, it is preferred that a sealing ring is provided between the medium inlet and the insulation layer.

In the above solution, it is preferable that a vacuum tube sealing ring is arranged between the vacuum tube and the insulation layer.

In the above scheme, it is preferred that the number of stainless steel conduits is 2-20.

In the above scheme, it is preferred that the number of stainless steel conduits, heat collecting tubes and vacuum tubes is the same.

In the above solution, it is preferred that the end of the vacuum tube is provided with a tail, and the end of the vacuum tube is nested on the tail.

Advantage and effect of the present utility model are:

1. The utility model is provided with an inner header inside the outer header, and stainless steel conduits are arranged on both sides of the inner header, and the end of the stainless steel conduit communicates with the heat collecting pipe, so that the medium flows from the heat collecting pipe to the inner header Flow, so as to form a gradual absorption of heat, so that it can better absorb the heat on the heat collecting tube, make the heat exchange more efficient, and better meet people's daily needs.

2. In this utility model, the flow direction of the medium can be oriented by setting the inner connection header and the stainless steel conduit, so as to better form convection.

3. The utility model has many applications according to the heat transfer medium heated in the heat collecting tube. For example, the heat transfer medium can be air, water, heat transfer oil, molten salt liquid, etc. This device can be applied to drying Machines, large hot water projects, solar thermal power generation, etc.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the utility model.

Labels in the figure: 1 medium inlet, 2 sealing ring, 3 insulation layer, 4 vacuum tube sealing ring, 5 bellows ring, 6 heat collecting tube, 7 stainless steel conduit, 8 vacuum tube, 9 tail joint, 10 outer connecting header, 11 inner Even header, 12 media import and export.

Detailed ways

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

A solar heat collector of a new heat exchange device, as shown in Figure 1, includes a medium inlet 1, a sealing ring 2, an insulation layer 3, a vacuum tube sealing ring 4, a bellows ring 5, a heat collecting tube 6, a stainless steel conduit 7, Vacuum tube 8, tail joint 9, outer connection header 10, inner connection header 11 and medium inlet and outlet 12.

The medium inlet (1) is arranged at one end of the inner connection header 11, and three stainless steel conduits 7 are arranged on both sides of the inner connection header 11 and communicate with the inner connection header 11. The outer connection header 10 is sleeved on the outside of the inner connection header 11 , and the other end of the outer connection header 10 opposite to the medium inlet 1 is provided with a medium outlet 12 .

Heat collecting pipes 6 are arranged on both sides of the outer header 10 and communicate with the outer header 10 . The heat collecting tube 6 is sleeved on the outside of the stainless steel conduit 7, the stainless steel conduit 7 communicates with the heat collecting tube 6 through an opening at the end, the space between the stainless steel conduit 7 and the heat collecting tube 6 is a cavity, and the outside of the heat collecting tube 6 is coated with a heat collecting coating. The vacuum tube 8 is sleeved on the outside of the heat collecting tube 6 and is fixed and sealed with the heat collecting tube 6 through the bellows ring 5. The bellows ring 5 can well prevent the influence of the thermal barrier and the cold shrinkage, and better protect the vacuum cavity from entering Air. A vacuum chamber is arranged between the vacuum tube 8 and the heat collecting tube 6 . The outer side of the outer header 10 is provided with an insulating layer 3 or a vacuum cavity, and the insulating layer 3 is made of foam material. The heat insulation layer 3 mainly plays the role of heat preservation, prevents the heat loss of the medium, and plays the role of heat protection.

The end of the vacuum tube 8 is provided with a tail joint 9, and the end of the vacuum tube 8 is nested on the tail joint 9. A role for tailing 9q fixation protection.

working principle:

The medium enters the inner connection header 11 from the medium inlet 1, and the medium enters the heat collecting tube 6 from the opening at the end of the stainless steel conduit 7. The outer heat collecting layer of the heat collecting tube 6 continuously absorbs sunlight heat or other heat and then exchanges heat with the medium. Connect the header 10, and flow out from the medium inlet and outlet 21 of the outer header 10, forming a good heat exchange function.

The preferred embodiments created by the utility model have been specifically described above, but the utility model is not limited to the embodiments. Those skilled in the art can also make various equivalents without violating the spirit of the utility model. Modifications or replacements, and these equivalent modifications or replacements are all included within the scope of this application.

Claims (7)

1. A kind of 1. solar thermal collector of new heat-exchange device, it is characterised in that：Including thermal-collecting tube (6), stainless steel pipe (7), vacuum tube (8), outer even header (10) and interior even header (11)；

   Interior even header (11) one end is provided with medium inlet port (1), and some stainless steel pipes (7) are arranged on interior even header (11) Both sides and with it is interior even header (11) connect；Outer even header (10) is set in the outside of interior even header (11), outer even header (10) phase Media outlet (12) is provided with to medium inlet port (1) other end；

   Outer even header (10) both sides are provided with thermal-collecting tube (6) and are connected with outer even header (10)；Thermal-collecting tube (6) is set in stainless steel The outside of conduit (7), stainless steel pipe (7) set opening to be connected with thermal-collecting tube (6) by end, stainless steel pipe (7) and collection Cavity is arranged between heat pipe (6), thermal-collecting tube scribbles collection hot coating on the outside of (6)；Vacuum tube (8) is set in the outer of thermal-collecting tube (6) Side and pass through corrugated pipe ring (5) and thermal-collecting tube (6) fixed seal connection；Vacuum is arranged between vacuum tube (8) and thermal-collecting tube (6) Chamber.
2. A kind of 2. solar thermal collector of new heat-exchange device according to claim 1, it is characterised in that：The outer company Insulating layer (3) or the cavity of vacuum are provided with the outside of header (10), insulating layer (3) is made using foamed material.
3. A kind of 3. solar thermal collector of new heat-exchange device according to claim 2, it is characterised in that：Medium enters Sealing ring (2) is provided between mouth (1) and insulating layer (3).
4. A kind of 4. solar thermal collector of new heat-exchange device according to claim 3, it is characterised in that：The vacuum Vacuum tube sealing ring (4) is provided between pipe (8) and insulating layer (3).
5. A kind of 5. solar thermal collector of new heat-exchange device according to claim 1, it is characterised in that：It is described stainless The quantity of steel conduit (7) is 2-20.
6. A kind of 6. solar thermal collector of new heat-exchange device according to claim 5, it is characterised in that：Stainless steel is led Pipe (7), thermal-collecting tube (6) are identical with the quantity of vacuum tube (8).
7. A kind of 7. solar thermal collector of new heat-exchange device according to claim 5, it is characterised in that：Vacuum tube (8) end is provided with tail and closes (9), and the end of vacuum tube (8) is nested in tail and closes on (9).