CN217584912U

CN217584912U - Solar hot water circulating system applied to building

Info

Publication number: CN217584912U
Application number: CN202221471975.9U
Authority: CN
Inventors: 刘升禄; 郑铭辉
Original assignee: Shenzhen General Institute of Architectural Design and Research Co Ltd
Current assignee: Shenzhen General Institute of Architectural Design and Research Co Ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-10-14
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses a be applied to solar water heating circulation system of building. The solar hot water circulating system comprises a hot water tank, a low-level circulating hot water tank, a first water return main pipe, a circulating water return pump, a partition water return pipe and a second water return main pipe. One end of the partition water return pipe is connected to a hot water supply structure of the building, the other end of the partition water return pipe is connected to the low-level circulation hot water tank through the second water return main pipe, the low-level circulation hot water tank is connected with the hot water tank through the first water return main pipe and used for storing hot water flowing in through the second water return main pipe, the circulation water return pump is arranged on the first water return main pipe and used for pumping the hot water in the low-level circulation hot water tank to the hot water tank, therefore, on one hand, smooth water return can be achieved, on the other hand, the pipeline design can be simplified, the space occupied by the water return main pipe is reduced, the maintenance difficulty and the fault rate are favorably reduced, and meanwhile, extension or reconstruction is facilitated.

Description

Solar hot water circulating system applied to building

Technical Field

The utility model relates to a hot water circulating system field especially relates to a be applied to solar hot water circulating system of building.

Background

Solar energy is widely used as a clean energy source, large high-rise buildings are continuously appeared along with the promotion of urbanization and the development of large cities, the number of residents is continuously increased, and the demand of solar hot water is increased. For a common solar hot water circulation system, a hot water tank is generally arranged on the roof of a building, each hot water partition in a hot water supply structure in the building is connected with the hot water tank through an independent pipeline between a heat collector and the hot water tank, and circulating water return pumps are respectively arranged on the pipelines and used as circulating power of water in the solar hot water circulation system to enable the water to flow back to the hot water tank on the roof. For buildings with a large number of hot water zones, the number of circulating water pumps to be arranged is large, and meanwhile, the solar hot water circulating system can also be used for arranging an independent return water main pipe for each hot water zone, so that the demand of the return water main pipe is large, the occupied water well space is large, the structure of the whole solar hot water system is complex, the maintenance difficulty is high, the failure rate is high, and once the solar hot water system is built, the expansion or the reconstruction is very difficult.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model discloses solar hot water circulating system, solar hot water circulating system control simple structure is favorable to reducing the maintenance degree of difficulty and reduces the fault rate, also is convenient for expand or rebuild simultaneously.

In order to achieve the above object, the utility model discloses a solar hot water circulating system, this solar hot water circulating system includes

The hot water tank is used for being arranged on the roof of the building;

the low-level circulating hot water tank is arranged in the building and is connected with the hot water tank through a first water return main pipe;

the circulating water return pump is arranged on the first water return main pipe and used for pumping hot water in the low-level circulating hot water tank to the hot water tank; and

and one ends of the plurality of subarea water return pipes are respectively used for connecting a hot water supply structure of the building, and the other ends of the plurality of subarea water return pipes are connected to the low-level circulating hot water tank through a second water return main pipe.

As an optional implementation manner, in an embodiment of the present invention, one end of the first water return main pipe close to the low-level circulation hot water tank is connected to a water return branch pipe.

The circulating water return pump comprises a first water return pump and a second water return pump, the first water return pump is arranged on the first water return main pipe and close to the low-position circulating hot water tank, the second water return pump is arranged on the water return branch pipe, and the second water return pump is used for pumping hot water in the low-position circulating hot water tank to the first water return main pipe and the hot water tank through the water return branch pipe when the first water return pump fails.

As an optional implementation manner, in an embodiment of the present invention, the first water return main is provided with a valve, the valve has a first outlet and a second outlet, the first water return main is connected to the first outlet, the water return branch is connected to the second outlet, and the second outlet is used for opening when the first water return pump fails.

As an optional implementation manner, in an embodiment of the present invention, a liquid level sensor is disposed in the low-level circulation hot water tank, the liquid level sensor is electrically coupled to the circulation water return pump, the liquid level sensor is configured to detect a water level in the low-level circulation hot water tank, and control the circulation water return pump to start when the water level in the low-level circulation hot water tank is at a highest water level, and control the circulation water return pump to close when the water level in the low-level circulation hot water tank is at a lowest water level.

As an optional implementation manner, in the embodiment of the present invention, the top of the low-level circulation hot water tank is provided with an inlet, the bottom of the low-level circulation hot water tank is provided with an outlet, the first return water main pipe is connected to the outlet, and the second return water main pipe is connected to the inlet.

As an optional implementation manner, in the embodiment of the present invention, the partition water return pipe is provided with a temperature sensor and a solenoid valve, the temperature sensor is used for detecting the temperature in the partition water return pipe, and when the temperature of the water in the partition water return pipe is at the first temperature, the solenoid valve is controlled to be turned on, and when the temperature of the water in the partition water return pipe is at the second temperature, the solenoid valve is controlled to be turned off.

As an optional implementation manner, in the embodiment of the present invention, the low-level circulation hot water tank and the partition water return pipe and the hot water tank are distributed along the height direction of the building, and the partition water return pipe is located between the low-level circulation hot water tank and the hot water tank.

As an optional implementation manner, in an embodiment of the present invention, an inlet is disposed at a top portion of the hot water tank, and the first backwater main is connected to the inlet.

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

the embodiment of the utility model provides a pair of be applied to solar hot water circulation system of building, through set up low-order circulation hot-water tank in the building, and make low-order circulation hot-water tank be connected to the hot-water tank through first return water main, each hot water sectored subregion return water pipe is connected to low-order circulation hot-water tank through second return water main, thereby can realize smooth return water on the one hand, on the other hand can simplify solar hot water circulation system's pipeline design, reduce the space that the return water main took, be favorable to reducing and maintain the degree of difficulty and fault rate, be convenient for simultaneously expand and build or rebuild.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments are briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a solar hot water circulation system disclosed in an embodiment of the present invention;

fig. 2 is a schematic structural view of a circulating water return pump of a solar hot water circulating system disclosed in an embodiment of the present invention;

fig. 3 is a schematic diagram of the liquid level sensor in the solar hot water circulation system according to the embodiment of the present invention corresponding to different water levels.

An icon: 100. a solar hot water circulating system; 1. a hot water tank; 1a, a liquid inlet; 2. a low-level circulating hot water tank; 21. a liquid level sensor; 22. a maximum water level; 23. a lowest water level; 2a, a liquid inlet; 2b, a liquid outlet; 3. a first backwater main; 3a, a backwater branch pipe; 31. a valve; 311. a first outlet; 312. a second outlet; 32. a gate valve; 33. a flexible joint; 34. a check valve; 4. a circulating water return pump; 41. a first water return pump; 42. a second water return pump; 5. a partitioned water return pipe; 51. a temperature sensor; 52. An electromagnetic valve; 5a, a hot water supply structure; 6. second backwater main pipe

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.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Moreover, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific type and configuration may or may not be the same), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further described with reference to the following examples and drawings.

Referring to fig. 1, an embodiment of the present invention provides a solar hot water circulation system 100, which includes a hot water tank 1, a low-level circulation hot water tank 2, a first return water main pipe 3, a circulation return water pump 4, a partition return water pipe 5, and a second return water main pipe 6.

Specifically, the hot water tank 1 is disposed on the roof of a building, and the hot water tank 1 is used for storing hot water flowing in through the first water return main pipe 3 for a user. Low level circulation hot-water tank 2 sets up in the building, is connected with hot-water tank 1 through first return water main pipe 3, and low level circulation hot-water tank 2 is used for the hot water of storage through the 6 inflows of second return water main pipe to accessible first return water main pipe 3 carries the hot water to hot-water tank 1. First return water main 3 is located to circulation return water pump 4 for with the hot-water pumping in the low level circulation hot-water tank 2 to hot-water tank 1, 5 one ends of a plurality of subregion return water pipes are connected in the hot water supply structure of building, the other end is connected to low level circulation hot-water tank 2 through second return water main 6, thereby can realize smooth return water on the one hand, on the other hand can simplify solar hot-water circulating system's pipeline design, reduce the space that the return water main occupy, be favorable to reducing and maintain the degree of difficulty and fault rate, be convenient for simultaneously expand or rebuild.

In some embodiments, the hot water tank 1 is a heat preservation water tank, and is generally made of stainless steel or inner container enamel materials to meet the requirements of water quality sanitation and service life, and for the size of the volume of the hot water tank, the volume can be determined by referring to the hot water demand and consumption of users and combining the construction characteristics of specific projects and the form of the whole solar hot water circulation system, which is not specifically limited in this embodiment.

In some embodiments, as shown in fig. 1, a liquid inlet 1a is provided at the top of the hot water tank 1, and the liquid inlet 1a is connected to the first water main pipe 3. The liquid inlet is arranged at the top of the hot water tank, so that the first water return main pipe can be conveniently connected.

In the above embodiment, as shown in fig. 1 to fig. 3, a liquid inlet 2a is disposed at the top of the low-level circulation hot water tank 2, the liquid inlet 2a is connected to the second water return main pipe 6, a liquid outlet 2b is disposed at the bottom of the low-level circulation hot water tank 2, and the liquid outlet 2b is connected to the first water return main pipe 3. Be equipped with level sensor 21 on one side inner wall of low level circulation hot-water tank 2, level sensor 21 galvanic couple connects in circulation return water pump 4, and level sensor 21 is arranged in detecting the water level in low level circulation hot-water tank 2 to when the water level in low level circulation hot-water tank 2 is in highest water level 22, control circulation return water pump 4 starts, and, when the water level in low level circulation hot-water tank 2 is in lowest water level 23, control circulation return water pump 4 closes.

That is, when the liquid level sensor 21 detects that the water level of the low-level circulation hot water tank 2 reaches the highest water level 22, the liquid level sensor 21 sends a liquid level signal to the circulation water return pump 4, so as to control the circulation water return pump 4 to start; when the liquid level sensor 21 detects that the water level of the low-level circulating hot water tank 2 reaches the lowest water level 23, the liquid level sensor 21 also sends a liquid level signal to the circulating water return pump 4, so that the circulating water return pump 4 is controlled to be turned off. The mode of adopting increase level sensor 21 on low level circulation hot-water tank 2 can realize detecting the water level of low level circulation hot-water tank 2 in real time, also can in time send liquid level signal to circulation return water pump 4 simultaneously, in time effective control liquid level.

Alternatively, the circulation return pump 4 may be a centrifugal pump. It can be understood that the pump body of the centrifugal pump is composed of an impeller and a pump shell, when the impeller is driven by a motor to rotate at a high speed, liquid filled in the pump body is driven to rotate, and due to the action of centrifugal force, the liquid has certain pressure when leaving the impeller and is thrown to the pump shell at a higher speed. Meanwhile, a low pressure is formed at the center of the impeller to continuously suck the liquid, so that the liquid is continuously sucked into the pump and generates a certain pressure to be discharged to the first water return main pipe 3. The centrifugal pump has the advantages of energy conservation and low noise in the using process.

In the above embodiment, as shown in fig. 1 to 2, a return branch pipe 3a is provided at one end of the first return water main pipe 3 close to the low-level circulation hot water tank 2. The circulating water return pump 4 comprises a first water return pump 41 and a second water return pump 42, the first water return pump 41 is arranged on the first water return main pipe 3 and on one side close to the low-position circulating hot water tank 2, the second water return pump 42 is arranged on the water return branch pipe 3a, and the second water return pump 42 is used for sending hot water in the low-position circulating hot water tank 2 to the first water return main pipe 3 and the hot water tank 1 through the water return branch pipe 3a when the first water return pump 41 fails. The first water return main pipe 3 is provided with a valve 31, the valve is provided with a first outlet 311 and a second outlet 312, the first outlet 311 is connected to the first water return main pipe 3, the second outlet 312 is connected to the water return branch pipe 3a, and the second outlet 312 is used for opening when the first water return pump 41 fails.

It is understood that the failure of the first water return pump 41 refers to: the first water return pump 41 has the problems of no water discharge or insufficient flow, abnormal sound or excessive vibration, bearing heating, pump overpower, cavitation and the like.

That is to say, on one hand, the reason for providing the second water return pump 42 is to ensure that the second water return pump 42 can replace the first water return pump 41 to continue to work normally to supply water to the hot water tank when the first water return pump 41 fails or loses working capacity during periodic maintenance, so as to ensure that the solar hot water circulation system can still operate normally and hot water is supplied to a user; on the other hand, the water pump can take turns to rest after working for a period of time, and the normal service life of the water pump is prevented from being influenced by long-time uninterrupted operation.

Optionally, the return branch pipes 3a are arranged in parallel with the first return main pipe 3, and the return branch pipes 3a are used for supplying water to the hot water tank 1 instead of the first return main pipe 3 when the first return pump 41 fails to perform normal water conveyance due to the fault, so that on one hand, normal operation of the solar hot water circulation system can be ensured, and normal supply of hot water is ensured. On the other hand is concentrated when the stream of people, is in the water peak period, and when hydrothermal demand was more than normal condition, the water supply pressure grow of first return water main, sets up second return water pump and return water branch pipe, and the double-pump moves simultaneously, under the prerequisite that double-barrelled water supplied simultaneously, can alleviate water pressure.

Optionally, the gate valve 32, the flexible joint 33 and the check valve 34 are sequentially arranged at the same and corresponding positions on the first water return main pipe a and the water return branch pipe 3a. The gate valve 32 can reduce flow resistance, the flexible joint 33 is used for reducing damage to a pipe joint and preventing building settlement caused by vibration generated when the device is operated or the pipe is used when the flexible joint is connected with the device or the pipe, the flexible joint is convenient to maintain, and the check valve 34 is used for preventing backflow.

Optionally, the valve 31 is an electric three-way valve or a pneumatic three-way valve. The electric three-way valve and the pneumatic three-way valve have the characteristics of energy conservation, environmental protection and quickness and convenience in installation in the using process, and can be selected according to the general engineering, and the embodiment is not limited to the specific embodiment.

In some embodiments, the multiple subarea water returning pipes 5 are provided with temperature sensors 51 and electromagnetic valves 52, the temperature sensors are used for detecting the temperatures in the multiple subarea water returning pipes 5, when the temperature of water in the subarea water returning pipes 5 is at a first temperature, the control electromagnetic valves 52 are started, the hot water supply structure 5a conveys hot water into the multiple subarea water returning pipes 5 and further conveys the hot water into the low-level circulation hot water tank 2, when the temperature of water in the subarea water returning pipes 5 is at a second temperature, the control electromagnetic valves 52 are closed, and the hot water supply structure 5a stops conveying the hot water, so that on one hand, the temperature control is simple and reliable, on the other hand, intelligent temperature control automatic water supply can be realized, the temperature difference water flow pipeline circulation can ensure the timely supply of the hot water.

Illustratively, the first temperature can be from 0 ℃ to 30 ℃, e.g., can be 10 ℃, 20 ℃, 25 ℃, etc. The second temperature may be 70 ℃ to 100 ℃, for example, 80 ℃, 90 ℃, 95 ℃, etc.

In some embodiments, the temperature sensor 51 is a thermocouple sensor, a thermistor sensor, a resistance temperature detector, or an IC temperature sensor. The thermocouple sensor is simple to assemble, convenient to replace, simple in manufacturing process and low in price; the thermistor sensor has high sensitivity, convenient use and easy processing; the resistance temperature detector has high precision and good stability and repeatability; the IC temperature sensor is suitable for multipoint temperature measurement and remote temperature control, and may be selected according to engineering profile, which is not limited in this embodiment.

In some embodiments, the solenoid valve 52 is a direct-acting solenoid valve, a step-by-step direct-acting solenoid valve, or a pilot-operated solenoid valve, and the direct-acting solenoid valve, the step-by-step direct-acting solenoid valve, and the pilot-operated solenoid valve have the advantages of energy saving, safety, reliability, and no need of manual operation during the use process, and may be selected according to the general engineering, which is not specifically limited in this embodiment.

In some embodiments, the relationship between the low-level circulation hot water tank 2, the partitioned return pipe 5 and the hot water tank 1 is as follows: low level circulation hot-water tank 2 and subregion wet return 5 and hot-water tank 1 distribute along building height direction is upwards, and subregion wet return 5 is located between low level circulation hot-water tank 2 and hot-water tank 1. Like this, low level circulation hot-water tank is in the low level of building in comparison with subregion wet return, hot-water tank to be convenient for this subregion wet return and hot water reflux to low level circulation hot-water tank in, make and need not to increase the power water pump in subregion wet return and the low level circulation hot-water tank, reduce the setting of power water pump.

It is right above the embodiment of the utility model discloses a solar hot-water circulation system carries out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been explained, and the description of above embodiment is only used for helping understanding the utility model discloses a solar hot-water circulation system and core thought thereof: meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application range, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A solar hot water circulation system applied to a building, comprising:

the hot water tank is used for being arranged on the roof of the building;

2. The solar hot water circulation system according to claim 1, wherein a return branch pipe is connected to one end of the first return main pipe close to the low-level circulation hot water tank;

the circulating water return pump comprises a first water return pump and a second water return pump, the first water return pump is arranged on the first water return main pipe and close to the low-level circulating hot water tank, the second water return pump is arranged on the water return branch pipe, and the second water return pump is used for pumping hot water in the low-level circulating hot water tank to the first water return main pipe and the hot water tank through the water return branch pipe when the first water return pump fails.

3. The solar hot water circulation system of claim 2, wherein the first return water main is provided with a valve having a first outlet and a second outlet, the first return water main is connected to the first outlet, the return water branch is connected to the second outlet, and the second outlet is adapted to be opened when the first return water pump fails.

4. The solar hot water circulation system of claim 1, wherein a liquid level sensor is disposed in the low-level circulation hot water tank, the liquid level sensor is electrically coupled to the circulation water return pump, the liquid level sensor is configured to detect a water level in the low-level circulation hot water tank, control the circulation water return pump to be activated when the water level in the low-level circulation hot water tank is at a highest water level, and control the circulation water return pump to be deactivated when the water level in the low-level circulation hot water tank is at a lowest water level.

5. The solar hot water circulation system of claim 1, wherein a liquid inlet is formed in the top of the low-level circulation hot water tank, a liquid outlet is formed in the bottom of the low-level circulation hot water tank, the first water return main is connected to the liquid outlet, and the second water return main is connected to the liquid inlet.

6. The solar hot water circulation system according to claim 1, wherein the partitioned water return pipe is provided with a temperature sensor and a solenoid valve, the temperature sensor is used for detecting the temperature in the partitioned water return pipe, the solenoid valve is controlled to be started when the temperature in the partitioned water return pipe is at a first temperature, and the solenoid valve is controlled to be closed when the temperature in the partitioned water return pipe is at a second temperature.

7. The solar hot water circulation system of claim 1, wherein the low-level circulating hot water tank and the partitioned return pipes and the hot water tank are distributed along a height direction of the building, and the partitioned return pipes are located between the low-level circulating hot water tank and the hot water tank.

8. The solar hot water circulation system according to any one of claims 1-7, wherein an inlet is provided at the top of the hot water tank, and the first return water main is connected to the inlet.