CN209926634U - Sealing structure of heat collecting pipe of solar water heater - Google Patents

Abstract

The utility model relates to a sealing structure of a heat collecting pipe of a solar water heater, which comprises the heat collecting pipe and a sealing cover arranged at the pipe orifice of the heat collecting pipe, wherein the pipe orifice of the heat collecting pipe is provided with an external thread, the sealing cover comprises an upper top wall, an inner peripheral wall and an outer peripheral wall, the inner peripheral wall and the outer peripheral wall are connected with the lower end of the upper top wall, and a gap is reserved between the inner peripheral wall and the; be equipped with the internal thread on the periphery wall to with the mouth of pipe screw-thread fit of thermal-collecting tube, the internal perisporium stretches into in the mouth of pipe of thermal-collecting tube, overlaps in the outside of interior perisporium and is equipped with the sealing washer, and the sealing washer still installs the port cushion at the junction of interior perisporium and periphery wall with the inner wall sealing contact of thermal-collecting tube, the port cushion is with the mouth of pipe terminal surface sealing contact of thermal-collecting tube. The utility model discloses multiple seal structure has integrateed the pressure-bearing effectual, the difficult advantage that leaks of long-time use.

Description

A kind of sealing structure of solar water heater collector tube

technical field

The utility model relates to a heat collecting device for a water heater, in particular to a sealing structure for a heat collecting pipe of a solar water heater.

Background technique

At present, solar water heaters have been widely used in residential buildings, but due to the structural problems of solar water heaters and the particularity of high-rise residential buildings, their application in high-rise residential buildings and their combination with buildings have not been well resolved. The large-diameter glass tube has the advantages of large water storage capacity, good thermal insulation, and high thermal efficiency. It can realize a water heater that integrates heat collection and heat storage, eliminating the need for a water storage tank. It is suitable for the integration design requirements of solar water heaters and buildings. With the increase of the diameter of the collector tube, it is difficult to solve the problem of sealing the opening of the collector tube. At present, the common sealing structures in the market are mainly metal flange sealing structures, plastic thread sealing structures, etc. The convenience of connection does not fully meet the market demand. The above-mentioned sealing methods all have the problems of poor pressure bearing effect and low sealing stability. After long-term use, water leakage is likely to occur.

In view of this, the present invention is proposed.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide a sealing structure for the collector tube of a solar water heater, which integrates various sealing structures, and has the advantages of good pressure bearing effect and not easy to leak water after long-term use.

In order to achieve this purpose, the utility model adopts the following technical solutions:

A sealing structure for a heat collecting tube of a solar water heater, comprising a heat collecting tube and a sealing cover installed on the mouth of the heat collecting tube, the mouth of the heat collecting tube is provided with an external thread, and the sealing cover includes an upper top wall, which is connected with the upper top wall. The inner peripheral wall and the outer peripheral wall are connected with the lower end of the inner peripheral wall, and there is a gap between the inner peripheral wall and the outer peripheral wall; the outer peripheral wall is provided with an inner thread, which is matched with the pipe opening thread of the heat collecting pipe, and the inner peripheral wall extends into the In the nozzle of the heat collecting tube, a sealing ring is sleeved on the outer side of the inner peripheral wall, and the sealing ring is in sealing contact with the inner wall of the heat collecting tube, and a port rubber gasket is also installed at the connection between the inner peripheral wall and the outer peripheral wall. The end faces of the tube mouths of the collector tubes are in sealing contact.

Further, an annular groove is formed on the outer surface of the inner peripheral wall, and the sealing ring is sleeved in the annular groove.

Further, the number of the annular grooves is at least two, and the number of the sealing rings is the same as that of the annular grooves.

Further, the sealing ring is an O-ring.

Further, the upper top wall is a hemispherical shell structure, and the upper ends of the inner peripheral wall and the outer peripheral wall are jointly connected to the upper top wall.

Further, the inner peripheral wall, the outer peripheral wall and the upper top wall are integrally formed.

Further, the upper top wall is also provided with a plurality of short pipes for entering and leaving water, and the short pipes communicate with the interior of the heat collecting pipe and the external space.

Further, the short pipe includes a user-side water inlet pipe, a user-side water outlet pipe, a water supply pipe and a drain pipe.

Further, there are a plurality of the heat collecting tubes, which are arranged side by side, and the adjacent heat collecting tubes are communicated with each other through short tubes.

After adopting the technical scheme described in the present utility model, the following beneficial effects are brought:

The utility model adopts a triple sealing structure, wherein the cooperation between the sealing cover and the heat collecting tube is the first sealing, the cooperation between the sealing ring and the heat collecting tube is the second sealing, and the cooperation between the port rubber gasket and the heat collecting tube is the third sealing. , Through the above-mentioned triple sealing structure, the heat collecting tube of the present invention has a good pressure bearing capacity during use, and it is not easy to leak water for a long time, and the installation process is simple and easy to use, which effectively overcomes the difficulty of sealing the large-diameter heat collecting tube. The problem.

Description of drawings

Fig. 1: structural drawing of the present utility model;

Fig. 2: the top view of the utility model;

Fig. 3: is the A-A plane sectional view of Fig. 2;

Figure 4: is an enlarged view of the Y part of Figure 3;

Among them: 1. Heat collector tube 2, sealing cover 3, sealing ring 4, port rubber pad 21, upper top wall 22, inner peripheral wall 23, outer peripheral wall 24, user side water inlet pipe 25, user side water outlet pipe 26, water supply pipe 27, drain.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

As shown in FIG. 1 to FIG. 4 , a sealing structure of a solar water heater heat collecting tube includes a heat collecting tube 1 and a sealing cover 2 . The heat collecting tube 1 is a vacuum glass tube with external threads sintered at the nozzle opening. The sealing cover 2 is used to close the heat collecting tube 1, so that the heat collecting tube 1 has a water storage function.

Specifically, the sealing cover 2 includes an upper top wall 21 , an inner peripheral wall 22 and an outer peripheral wall 23 connected with the lower end of the upper top wall 21 . The inner peripheral wall 22 and the outer peripheral wall 23 are annular structures, and there is a gap between them, and the width of the gap is not less than the thickness of the tube wall of the heat collecting tube 1 . The outer peripheral wall 23 is provided with an inner thread, which is matched with the nozzle thread of the heat collector tube 1. By rotating the heat collector tube 1, the nozzle can be screwed into the gap between the outer peripheral wall 23 and the inner peripheral wall 22. When the nozzle of the heat collector tube 1 is screwed into the gap, the inner peripheral wall 22 will extend into the nozzle of the heat collector tube 1 , and a sealing ring 3 is sleeved on the outer side of the inner peripheral wall 22 . For sealing contact, a port rubber pad 4 is also installed at the connection between the inner peripheral wall 22 and the outer peripheral wall 23 , and the port rubber pad 4 is in sealing contact with the end face of the tube mouth of the heat collector tube 1 .

After the heat collecting tube 1 and the sealing cover 2 are connected in place, the sealing ring 3 first plays a sealing role to prevent the water in the heat collecting tube 1 from overflowing. When the sealing ring 3 fails, the port gasket 4 can still make the heat collecting tube 1 and the The sealing cover 2 maintains a good sealing performance. When the port rubber gasket 4 fails, the threaded cooperation between the sealing cover 2 and the collector tube 1 can still play a certain sealing role. 1 can form a good sealing cooperation, and have a certain pressure bearing capacity, and the effectiveness of the sealing is significantly improved, and water leakage is not easy to occur.

Preferably, in order to facilitate the positioning of the sealing ring 3, an annular groove is formed on the outer surface of the inner peripheral wall 22, and the sealing ring 3 is sleeved in the annular groove.

Preferably, the number of the annular grooves is at least two, and the number of the sealing rings 3 is the same as that of the annular grooves.

Preferably, the sealing ring 3 is an O-ring, and the sealing ring 3 and the port rubber gasket 4 are made of rubber materials.

Preferably, the upper top wall 21 is a hemispherical shell structure, and the upper ends of the inner peripheral wall 22 and the outer peripheral wall 23 are jointly connected with the upper top wall 21 and are integrally formed.

In order to realize the water exchange function of the heat collecting pipe 1 , the upper top wall 21 is further provided with a plurality of short pipes for entering and leaving water, and the short pipes communicate with the interior and the external space of the heat collecting pipe 1 . Specifically, the short pipes include a user-side water inlet pipe 24 , a user-side water outlet pipe 25 , a water supply pipe 26 and a drain pipe 27 . The adjacent heat collecting pipes 1 are arranged side by side and communicated through the short pipes.

The above are the embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, various modifications and improvements can be made without departing from the principles of the present invention, which should also be regarded as the present invention. The scope of protection of the utility model.

Claims (9)

1. A sealing structure of a solar water heater heat collecting tube, comprising, a heat collecting tube and a sealing cover installed on the mouth of the heat collecting tube, the mouth of the heat collecting tube is provided with an external thread, and it is characterized in that: The sealing cover includes an upper top wall, an inner peripheral wall and an outer peripheral wall connected with the lower end of the upper top wall, and a gap is left between the inner peripheral wall and the outer peripheral wall; the outer peripheral wall is provided with an inner thread, and is connected with the heat collecting pipe. The inner peripheral wall extends into the nozzle of the heat collecting tube, and a sealing ring is sleeved on the outer side of the inner peripheral wall, and the sealing ring is in sealing contact with the inner wall of the heat collecting tube, and the connection between the inner peripheral wall and the outer peripheral wall is A port rubber pad is also installed, and the port rubber pad is in sealing contact with the end face of the tube mouth of the heat collecting tube. 2 . The sealing structure of a solar water heater collector tube according to claim 1 , wherein an annular groove is formed on the outer surface of the inner peripheral wall, and the sealing ring is sleeved in the annular groove. 3 . 3 . The sealing structure for a collector tube of a solar water heater according to claim 2 , wherein the number of the annular grooves is at least two, and the number of the sealing rings is the same as that of the annular grooves. 4 . 4 . The sealing structure of a solar water heater collector tube according to claim 1 , wherein the sealing ring is an O-ring. 5 . 5 . The sealing structure of the solar water heater collector tube according to claim 1 , wherein the upper top wall is a hemispherical shell structure, and the upper ends of the inner peripheral wall and the outer peripheral wall are jointly connected with the upper top wall. 6 . 6 . The sealing structure of a solar water heater collector tube according to claim 5 , wherein the inner peripheral wall, the outer peripheral wall and the upper top wall are integrally formed. 7 . 7 . The sealing structure of a solar water heater collector tube according to claim 1 , wherein the upper top wall is further provided with a plurality of short tubes for entering and leaving water, and the short tubes communicate with the inside of the collector tube. 8 . with external space. 8 . The sealing structure of a solar water heater collector pipe according to claim 7 , wherein the short pipe comprises a user-side water inlet pipe, a user-side water outlet pipe, a water supply pipe and a drain pipe. 9 . 9 . The sealing structure of solar water heater heat collecting tubes according to claim 7 or 8 , wherein the heat collecting tubes are multiple and arranged side by side, and adjacent heat collecting tubes are connected through short tubes. 10 .

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