CN210951922U

CN210951922U - Medium expansion device for balcony wall-mounted solar water heating system

Info

Publication number: CN210951922U
Application number: CN201921783092.XU
Authority: CN
Inventors: 王勇
Original assignee: Shandong Quanfeng New Energy Co ltd
Current assignee: Shandong Quanfeng New Energy Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-07
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a balcony hanging solar water heating system medium expansion device, through set up the fly leaf in the inside of expansion tank, and be connected through compression spring at the up end of fly leaf and the lower terminal surface of the top of expansion tank, when nontoxic rubber air bag's inflation, can upwards promote the fly leaf, and then make the space increase that nontoxic rubber air bag is located, and then can not influence the use of nontoxic rubber air bag, simultaneously, when the fly leaf moves to the top of No. two pressure release mouths, can play the effect of pressure release through No. two pressure release mouths, and then reduce the pressure in the expansion tank; through set up the relief valve on the baffle in nontoxic rubber gasbag, then set up pressure release mouth No. two tops in chamber again, when nontoxic rubber gasbag's internal pressure was too big, can let partial pressure into No. two chambeies through the relief valve, and it is too big when No. two chambeies inflation for liquid enters into the expansion tank through pressure release mouth, plays the effect of further pressure release.

Description

Medium expansion device for balcony wall-mounted solar water heating system

Technical Field

The utility model relates to a medium expansion device specifically is a balcony hanging solar water heating system medium expansion device.

Background

The wall-mounted solar water heaters are of two types, one type is that a water tank is placed in a balcony, and a heat collector is placed on the building south vertical balcony; the other is a heat storage and collection integrated closed sunning type solar water heater.

The hot water system is characterized in that fins in a flat plate collector convert absorbed solar radiation into heat energy, so that the temperature of a working medium in a heat exchange tube of the collector is continuously increased, and by utilizing the characteristics of low hydrothermal fluid density and high cold fluid density, a natural circulation of cold water from top to bottom and hot water from bottom to top is formed between the collector and a water tank through a circulation pipeline. By this circulation, the water in the water tank is gradually warmed up. Because the working medium in the flat plate collector is low temperature resistant liquid, the working medium can be kept at minus 40 ℃ and cannot be frozen. Therefore, the device can normally operate in cold areas all the year round.

When the temperature in hot water system's the water tank rises excessively, need use the expansion tank pressure release, however, current expansion tank is comparatively simple, and the pressure release is convenient inadequately, to this, needs to improve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a balcony hanging solar water heating system medium expansion device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a medium expansion device of a balcony wall-mounted solar water heating system comprises an expansion tank, a non-toxic rubber air bag, a liquid conveying pipe and a PLC (programmable logic controller), wherein the non-toxic rubber air bag is arranged inside the expansion tank, the non-toxic rubber air bag is divided into a first cavity and a second cavity by a partition plate, a safety valve is installed on the partition plate, a first pressure relief opening is formed in one side of the top end of the second cavity, the top end of the non-toxic rubber air bag is fixed to the lower end face of a movable plate, a compression spring is fixed to the middle of the top end of the movable plate, the top end of the compression spring is fixed to the lower end face of the top end of the expansion tank, a plurality of corresponding sliding rails are arranged on the inner wall of the expansion tank, a plurality of sliding blocks are fixed to the outer wall of the movable plate, the movable plate moves; a liquid return port is formed in one side of the bottom end of the expansion tank, a liquid return pipe is connected to the outside of the liquid return port, and a liquid outlet of the liquid return pipe is connected with a liquid conveying pipe.

As a further aspect of the present invention: the liquid inlet of the expansion tank is connected with a liquid outlet branch port of the liquid conveying pipe through a liquid inlet pipeline.

As a further aspect of the present invention: and a pressure gauge is arranged at a position, close to the liquid inlet pipeline, on the infusion tube, and the pressure gauge is electrically connected with the PLC through a data lead.

As a further aspect of the present invention: the liquid return pipe is provided with a pump which is electrically connected with a PLC programming controller through a data wire.

As a further aspect of the present invention: and the liquid inlet and the liquid outlet of the liquid conveying pipe are respectively connected with the liquid outlet of the water tank and the liquid inlet of the solar heat collecting plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the movable plate is arranged in the expansion tank, the upper end face of the movable plate is connected with the lower end face of the top end of the expansion tank through the compression spring, when the non-toxic rubber air bag expands, the movable plate can be pushed upwards, so that the space where the non-toxic rubber air bag is located is increased, the use of the non-toxic rubber air bag cannot be influenced, and meanwhile, when the movable plate moves above the second pressure relief opening, the pressure relief effect can be achieved through the second pressure relief opening, so that the pressure in the expansion tank is reduced;

2. the safety valve is arranged on the partition board in the non-toxic rubber air bag, then the first pressure relief opening is formed in the top end of the second cavity, when the internal pressure of the non-toxic rubber air bag is overlarge, partial pressure can be relieved into the second cavity through the safety valve, and then liquid enters the second cavity, and when the second cavity is overlarge, the liquid enters the expansion tank through the first pressure relief opening, so that the effect of further pressure relief is achieved;

3. through setting up the liquid return pipe, when the pressure in the transfer line reduced, can make the pump work, carry the liquid of expansion tank inside back the liquid pipe, and then in being led back the liquid pipe again, can make things convenient for the expansion tank to continue the pressure release and use.

Drawings

Fig. 1 is the whole structure diagram of the balcony wall-mounted solar water heating system medium expansion device of the utility model.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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, in an embodiment of the present invention, a medium expansion device for a balcony wall-mounted solar water heating system comprises an expansion tank 1, a non-toxic rubber airbag 2 disposed inside the expansion tank 1, the infusion tube 19 and the PLC 16, the inside of the nontoxic rubber airbag 2 is divided into a first cavity 5 and a second cavity 6 by a partition plate 3, a safety valve 4 is installed on the partition plate 3, a first pressure relief opening 7 is formed in one side of the top end of the second cavity 6, the top end of the nontoxic rubber airbag 2 is fixed on the lower end face of a movable plate 8, a compression spring 11 is fixed in the middle of the top end of the movable plate 8, the top end of the compression spring 11 is fixed on the lower end face of the top end of an expansion tank 1, a plurality of corresponding slide rails 10 are arranged on the inner wall of the expansion tank 1, a plurality of slide blocks 9 are fixed on the outer wall of the movable plate 8, the movable plate 8 moves along the slide rails 10 through the slide blocks 9, and a second pressure relief opening 12 is formed; a liquid return port is formed in one side of the bottom end of the expansion tank 1, a liquid return pipe 17 is connected outside the liquid return port, and a liquid outlet of the liquid return pipe 17 is connected with a liquid conveying pipe 19; a liquid inlet and a liquid outlet of the liquid conveying pipe 19 are respectively connected with a liquid outlet of the water tank and a liquid inlet of the solar heat collecting plate; the movable plate 8 is arranged in the expansion tank 1, the upper end face of the movable plate 8 is connected with the lower end face of the top end of the expansion tank 1 through the compression spring 11, when the non-toxic rubber air bag 2 expands, the movable plate 8 can be pushed upwards, so that the space where the non-toxic rubber air bag 2 is located is increased, the use of the non-toxic rubber air bag 2 cannot be influenced, and meanwhile, when the movable plate 8 moves to the position above the second pressure relief opening 12, the pressure relief effect can be achieved through the second pressure relief opening 12, so that the pressure in the expansion tank 1 is reduced; through set up relief valve 4 on baffle 3 in nontoxic rubber gasbag 2, then set up pressure release mouth 7 No. two on the top of chamber 6 again, when the internal pressure of nontoxic rubber gasbag 2 was too big, can let partial pressure into No. two chambers 6 through relief valve 4, and then make liquid enter into No. two chambers 6, it is too big when No. two chambers 6 inflation for liquid enters into expansion tank 1 through pressure release mouth 7, play the effect of further pressure release.

Referring to fig. 1, a liquid inlet of the expansion tank 1 is connected with a liquid outlet branch port of a liquid conveying pipe 19 through a liquid inlet pipeline 13; a pressure gauge 15 is arranged on the infusion tube 19 at a position close to the liquid inlet pipeline 13, and the pressure gauge 15 is electrically connected with a PLC (programmable logic controller) 16 through a data lead; a pump 18 is arranged on the liquid return pipe 17, and the pump 18 is electrically connected with the PLC 16 through a data wire; the pressure gauge 15 can detect the pressure in the infusion tube 19, and when the pressure value is too low, the pump 18 is controlled to work, so that the liquid in the expansion tank 1 is conveyed into the infusion tube 19.

The working principle is as follows: when the infusion tube 19 conveys a medium, when the temperature of the conveyed medium is too high, the pressure in the infusion tube 19 rises, the liquid in the infusion tube 19 partially enters the first cavity 5 of the non-toxic rubber airbag 2 in the expansion tank 1, so that the non-toxic rubber airbag 2 expands, the safety valve 4 at the top end of the first cavity 5 of the non-toxic rubber airbag 2 can enable the gas to firstly enter the second cavity 6, so that the gas in the second cavity 6 enters the expansion tank 1 through the first pressure relief opening 7, meanwhile, due to the small calibers of the safety valve 4 and the first pressure relief opening 7, the amount of the liquid entering the non-toxic rubber airbag 2 is too much, so that the non-toxic rubber airbag 2 expands to drive the movable plate 8 at the top end to move upwards along the slide rail 10 through the slide block 9, so that the compression spring 11 is compressed, when the movable plate 8 moves above the second pressure relief opening 12, the gas in the expansion tank 1 can be discharged through the second pressure relief opening 12, a good pressure relief effect can be achieved; when the interior of the non-toxic rubber air bag 2 is filled with medium liquid, if the non-toxic rubber air bag 2 continues to expand, the medium liquid is discharged into the expansion tank 1 through the first pressure relief opening 7 at the top end, and a certain pressure relief effect can be achieved; when the pressure in the infusion tube 19 is reduced, the liquid in the expansion tank 1 automatically flows back to the infusion tube 19, when the pressure gauge 15 detects that the pressure in the infusion tube 19 is reduced to the lowest set value, the information is transmitted to the PLC 16, and then the PLC 16 receives the information and controls the pump 18 to work, so that the pump 18 conveys the medium liquid in the expansion tank 1 to the liquid return tube 17, and then the liquid is guided back to the infusion tube 19.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a balcony hanging solar water heating system medium expansion device, includes expansion tank (1), sets up at inside nontoxic rubber gasbag (2) of expansion tank (1), transfer line (19) and PLC programming controller (16), its characterized in that: the interior of the nontoxic rubber air bag (2) is divided into a first cavity (5) and a second cavity (6) by a clapboard (3), a safety valve (4) is arranged on the clapboard (3), a first pressure relief opening (7) is arranged on one side of the top end of the second cavity (6), the top end of the non-toxic rubber air bag (2) is fixed on the lower end surface of the movable plate (8), a compression spring (11) is fixed in the middle of the top end of the movable plate (8), the top end of the compression spring (11) is fixed on the lower end surface of the top end of the expansion tank (1), a plurality of corresponding slide rails (10) are arranged on the inner wall of the expansion tank (1), a plurality of sliding blocks (9) are fixed on the outer wall of the movable plate (8), the movable plate (8) moves along the sliding rail (10) through the sliding blocks (9), a second pressure relief opening (12) is formed in one side of the top of the expansion tank (1); a liquid return port is formed in one side of the bottom end of the expansion tank (1), a liquid return pipe (17) is connected to the outside of the liquid return port, and a liquid outlet of the liquid return pipe (17) is connected with a liquid conveying pipe (19).

2. The balcony wall-mounted solar water heating system medium expansion device as claimed in claim 1, wherein: the liquid inlet of the expansion tank (1) is connected with a liquid outlet branch port of the liquid conveying pipe (19) through a liquid inlet pipeline (13).

3. The balcony wall-mounted solar water heating system medium expansion device as claimed in claim 2, wherein: and a pressure gauge (15) is arranged at a position, close to the liquid inlet pipeline (13), on the liquid conveying pipe (19), and the pressure gauge (15) is electrically connected with a PLC (programmable logic controller) through a data lead.

4. The balcony wall-mounted solar water heating system medium expansion device as claimed in claim 1, wherein: the liquid return pipe (17) is provided with a pump (18), and the pump (18) is electrically connected with a PLC (programmable logic controller) programming controller (16) through a data wire.

5. The balcony wall-mounted solar water heating system medium expansion device as claimed in claim 1, wherein: and a liquid inlet and a liquid outlet of the liquid conveying pipe (19) are respectively connected with a liquid outlet of the water tank and a liquid inlet of the solar heat collecting plate.