CN212645008U

CN212645008U - Open photovoltaic power generation system that prevents frostbite

Info

Publication number: CN212645008U
Application number: CN202021052885.7U
Authority: CN
Inventors: 沈惠飞
Original assignee: Shaoxing Shangyu Nottingham Co ltd
Current assignee: Shaoxing Shangyu Nottingham Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-03-02
Anticipated expiration: 2030-06-10

Abstract

The utility model discloses an open photovoltaic power generation system that prevents frostbite, including the heat collector, the feed tank, the upper hose, the wet return, the drain pipe, the circulating pipe, the storage water tank, the heat collector is connected through upper hose and wet return respectively with the feed tank both ends, drain pipe one end and storage water tank connection, circulating pipe one end is close to heat collector one end with the upper hose and is connected, the upper hose is close to heat collector one side and is provided with the three-way valve, two valve ports of three-way valve respectively with water piping connection, another valve port of three-way valve is connected with the circulating pipe, the wet return is close to heat collector one side and is provided with the cross, four valve ports of cross valve are the cross, two valve ports on the straight line of. The utility model discloses a set up two kinds of modes of preventing frostbite and can switch and make photovoltaic power generation system can select suitable mode to prevent frostbite.

Description

Open photovoltaic power generation system that prevents frostbite

Technical Field

The utility model relates to a transformer production facility field, in particular to open photovoltaic power generation system that prevents frostbite.

Background

The solar photovoltaic photo-thermal comprehensive utilization technology is a solar energy utilization technology organically combining photovoltaic utilization and photo-thermal utilization, and is called PV/T technology for short. The common circulation in the PV/T system is known during water, and when the PV/T system runs, the water pipe on the back of the heat absorption plate is used for absorbing the heat of the photovoltaic cell and enters the heat storage water tank. The PV/T hot water heat collector has freezing phenomenon when being used in cold seasons, cooling water in a water pipe is easy to freeze and expand in winter, and a pipeline is damaged.

The evacuation and freeze prevention are to discharge the working medium water in the pipeline and the heat collector so as to avoid the damage to the pipeline and the heat collector caused by the freezing of the water in the pipeline or the heat collector, and the circulation and freeze prevention are to keep the water flowing by enabling the whole solar photovoltaic power generation system to be in a working state so as to avoid the freezing of the water. Evacuation is frostproofing often suitable for the situation that the photovoltaic power generation system is not used for a long time, because the steps of pumping water, injecting water and the like need a large amount of time to complete, therefore if the photovoltaic power generation system is not used for a short time, the method is not suitable for frostproofing, and circulation is frostproofing, the method is suitable for the situation that the photovoltaic power generation system is not used for a short time, water can be kept from freezing by always keeping the circulation of the photovoltaic power generation system, a water pump and the like are required to be always in a working state, a large amount of energy is consumed, and therefore the method is not easy to use if the photovoltaic.

However, most of the existing solar photovoltaic power generation systems are configured with one anti-freezing method, so that the existing open type photovoltaic power generation systems have limitations in anti-freezing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an open photovoltaic power generation system that prevents frostbite has solved the single problem that has the limitation and is difficult to select suitable frostproofing mode according to particular case of current open photovoltaic power generation system's frostproofing mode.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an open type anti-freezing photovoltaic power generation system comprises a heat collector, a water supply tank, a water feeding pipe, a water return pipe, a water discharging pipe, a circulating pipe and a water storage tank, wherein the heat collector is connected with two ends of the water supply tank through the water feeding pipe and the water return pipe respectively, one end of the water discharging pipe is connected with the water storage tank, the other end of the water return pipe is positioned on one side, close to the heat collector, of the water feeding pipe, one end of the circulating pipe is connected with one end, close to the heat collector, of the water feeding pipe, the other end of the circulating pipe is positioned on one side, close to the heat collector, of the water return pipe, a three-way valve is arranged on one side, close to the heat collector, two valve ports of the three-way valve are connected with the water feeding pipe respectively, the four valve ports of, two valve ports on the other straight line of the four-way valve are respectively connected with one end of the circulating pipe far away from the three-way valve and one end of the drain pipe far away from the water storage tank.

Adopt above-mentioned technical scheme, through setting up circulating pipe and drain pipe, make at photovoltaic power generation system outside normal work, when preventing frostbite, through the contact of opening and close between three-way valve and the cross valve, the mobile mode of control water in the circulating pipe and in the drain pipe, thereby adjust whole photovoltaic power generation system for the evacuation is frostproofing or the circulation is frostproofing, and can adjust between two kinds of frostproofing modes and switch, flexibility when having improved photovoltaic power generation system and preventing frostbite, can adopt the most suitable mode of preventing frostbite according to situation and the condition of difference.

Preferably, a spare water tank is arranged on one side of the water tank, and the water tank is connected with the spare water tank through a connecting pipe.

By adopting the technical scheme, the spare water tank can discharge part of water into the spare water tank when the water in the water supply tank is too much, and the water in the spare water tank can be extracted to supplement when the water in the water supply tank is too little.

Preferably, the water supply pipe is close to one side of the water tank and is provided with a first water suction pump, and the water drainage pipe is close to one side of the water storage tank and is provided with a second water suction pump.

By adopting the technical scheme, the water suction pump I is arranged at the water supply pipe to provide power for the flow of water of the photovoltaic power generation system in the normal working and circulating anti-freezing states, and the water is pumped in the emptying anti-freezing mode by the photovoltaic power generation system through the arrangement of the water suction pump II.

Preferably, the outer walls of the water feeding pipe, the water return pipe, the water discharging pipe and the circulating pipe are provided with self-limiting heat tracing belts.

By adopting the technical scheme, the self-limiting heat tracing band is arranged on the outer wall of each pipeline to prevent the pipelines from being frozen, so that the pipelines are prevented from bursting and being damaged due to the fact that water is frozen in each pipeline.

Preferably, the antifreeze is placed inside the water supply tank and the water storage tank.

By adopting the technical scheme, the antifreezing fluid is placed in the water supply tank and the water storage tank, so that an antifreezing effect is achieved, and the water in the water supply tank and the water storage tank is prevented from freezing and damaging the water supply tank and the water storage tank.

Preferably, a temperature sensor is arranged in the standby water tank.

By adopting the technical scheme, the temperature sensor is arranged in the standby water tank, so that whether the standby water tank is started to prevent freezing can be determined by measuring the water temperature in the standby water tank.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Reference numerals: 1. a water supply tank; 2. a water storage tank; 3. a standby water tank; 4. a heat collector; 5. a water feeding pipe; 6. a water return pipe; 7. a drain pipe; 8. a circulation pipe; 9. a three-way valve; 10. a four-way valve; 11. a first water pump; 12. and a second water pump.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. It should also be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and such modifications and decorations should also be regarded as the protection scope of the present invention.

Referring to fig. 1, an open type anti-freezing photovoltaic power generation system comprises a heat collector 4, a water supply tank 1, a water supply pipe 5, a water return pipe 6, a water discharge pipe 7, a circulating pipe 8 and a water storage tank 2, wherein the heat collector 4 is connected with two ends of the water supply tank 1 through the water supply pipe 5 and the water return pipe 6 respectively, one end of the water discharge pipe 7 is connected with the water storage tank 2, the other end of the water return pipe 6 is positioned at one side close to the heat collector 4, one end of the circulating pipe 8 is connected with one end of the water supply pipe 5 close to the heat collector 4, the other end of the circulating pipe 6 is positioned at one side close to the heat collector 4, a three-way valve 9 is arranged at one side of the water supply pipe 5 close to the heat collector 4, two valve ports of the three-way valve 9 are connected with the water supply pipe 5, two valve ports on the other straight line of the four-way valve 10 are respectively connected with one end of the circulating pipe 8 far away from the three-way valve 9 and one end of the drain pipe 7 far away from the water storage tank 2.

One side of the water feeding pipe 5, which is close to the water tank, is provided with a first water suction pump 11, and one side of the water discharging pipe 7, which is close to the water storage tank 2, is provided with a second water suction pump 12.

When the photovoltaic power generation system needs to be stopped for a long time and needs to be emptied and prevented from freezing, at the moment, as shown in the attached drawing 1, the right valve port of the four-way valve 10 is closed, other three valve ports of the four-way valve 10 are opened, the upper valve port of the three-way valve 9 is closed, other two valve ports of the three-way valve 9 are opened, the first water suction pump 11 and the second water suction pump 12 are started, water in the water supply tank 1 and water remained in the water return pipe 6 are pumped to the position of the three-way valve 9 through the first water suction pump 11, then flow to the circulating pipe 8 through the valve port on the right side of the three-way valve 9, flow to the valve port on the bottom of the four-way valve 10 and then are pumped upwards into the water discharge pipe 7 and finally enter the water storage tank 2, water in the heat collector 4 and water in the water feeding pipe, The heat collector 4 and the water in each pipeline all flow into the storage water tank 2 for the water evacuation in the whole photovoltaic power generation system reaches the frost-proof effect of evacuation.

Although the process of emptying water in such a mode is troublesome, the water in the system is completely emptied, so that the system does not need to keep circulating operation to ensure the flow of the water after being emptied, and the system is suitable for freezing prevention when a photovoltaic power generation system is not used for a long time.

When photovoltaic power generation system knowledge need stop in the short time, adopt above-mentioned mode at evacuation water and subsequent water process very loaded down with trivial details of putting into to can waste a large amount of time, stop photovoltaic power generation system to see this kind of mode and be indemnable to the short time, consequently unsuitable with the frost-proof mode of evacuation.

At this time, as shown in figure 1, the lower valve port and the right valve port of the three-way valve 9 are firstly closed, the lower valve port and the right valve port of the four-way valve 10 are closed, the water pump II 12 is opened, the water in the heat collector 4 is pumped to the water storage tank 2, then the water pump II 12 is closed, the opening and closing states of the three-way valve 9 and the valve ports of the four-way valve 10 are unchanged, the water pump I11 is started to enable the water in the photovoltaic power generation system to enter the water feeding pipe 5 from the water feeding tank 1, the water enters the circulating pipe 8 from the water feeding pipe 5 through the three-way valve 9, then enters the water returning pipe 6 from the circulating pipe 8 through the four-way valve 10, and then enters the water feeding tank 1 through the water returning pipe 6, so as to form a circulation, at this time, the open type photovoltaic power generation system can be prevented freezing through circulation, and because, the loss of the heat collector 4 is reduced, and the rest part can be circulated, namely, the circulating system is separated from the heating system, and only the circulating system is circulated without heating, so that the energy is saved.

By adopting the mode, the anti-freezing state can be recovered to the normal working state in a short time, a large amount of time can not be consumed, and the two modes are switched quickly, so that the anti-freezing device is suitable for anti-freezing in a short time.

The utility model discloses a set up the evacuation and prevent frostbite with the circulation two kinds of modes of preventing frostbite in photovoltaic power generation system to two kinds of modes can be adjusted and switch, thereby make whole photovoltaic power generation system can select the best mode of preventing frostbite according to the needs of environment and condition, and the flexibility of preventing frostbite is high, can make the best selection according to different conditions, realizes the maximize of effect of preventing frostbite.

Water tank one side is provided with stand-by water tank 3, the water tank passes through the connecting pipe with stand-by water tank 3 and is connected, be provided with temperature sensor in the stand-by water tank 3, can emit some water to the stand-by water tank 3 when the water in the feed water tank 1 is too much through setting up stand-by water tank 3, can extract the water in some stand-by water tank 3 and supply when the water in the feed water tank 1 is too little, and set up temperature sensor in stand-by water tank 3, can feel whether open frostproofing through measuring the temperature in the stand-by water tank 3, because the water flow in the feed water tank 1 is big, its temperature is unfavorable for reacting the water temperature under the normal condition, consequently set up temperature sensor and can promote the effect of detection in stand-by water tank 3, thereby judge more correctly whether need.

The outer walls of the water feeding pipe 5, the water return pipe 6, the water discharge pipe 7 and the circulating pipe 8 are all provided with self-limiting heat tracing bands, and anti-freezing liquid is placed inside the water supply tank 1 and the water storage tank 2. The outer wall through at each pipeline sets up from the limited form companion tropical and plays the effect of preventing frostbite to each pipeline, avoids water to freeze in each pipeline and makes the pipeline spalling damaged, through placing antifreeze in water supply tank 1 and storage water tank 2, plays frost-proof effect, avoids the water in water supply tank 1 and the storage water tank 2 to freeze and causes the damage to water supply tank 1 and storage water tank 2. The two modes further improve the anti-freezing effect.

Claims

1. An open type anti-freezing photovoltaic power generation system is characterized by comprising a heat collector (4), a water supply tank (1), a water feeding pipe (5), a water return pipe (6), a water discharge pipe (7), a circulating pipe (8) and a water storage tank (2), wherein the heat collector (4) is connected with two ends of the water supply tank (1) through the water feeding pipe (5) and the water return pipe (6) respectively, one end of the water discharge pipe (7) is connected with the water storage tank (2), the other end of the water discharge pipe is positioned at one side of the water return pipe (6) close to the heat collector (4), one end of the circulating pipe (8) is connected with one end of the water feeding pipe (5) close to the heat collector (4), the other end of the circulating pipe is positioned at one side of the water return pipe (6) close to the heat collector (4), a three-way valve (9) is arranged at one side of the water feeding pipe (5) close to the heat collector, the other valve port of the three-way valve (9) is connected with one end of the circulating pipe (8), a four-way valve (10) is arranged on one side, close to the heat collector (4), of the water return pipe (6), four valve ports of the four-way valve (10) are in a cross shape, two valve ports on one straight line of the four-way valve (10) are respectively connected with the water return pipe (6), and two valve ports on the other straight line of the four-way valve (10) are respectively connected with one end, far away from the three-way valve (9), of the circulating pipe (8) and one end, far away from the water storage tank.

2. An open type anti-freezing photovoltaic power generation system as claimed in claim 1, characterized in that a spare water tank (3) is arranged on one side of the water tank, and the water tank is connected with the spare water tank (3) through a connecting pipe.

3. The open type anti-freezing photovoltaic power generation system as claimed in claim 2, wherein a first water suction pump (11) is arranged on one side, close to the water tank, of the water feeding pipe (5), and a second water suction pump (12) is arranged on one side, close to the water storage tank (2), of the water discharging pipe (7).

4. The open type anti-freezing photovoltaic power generation system as claimed in claim 3, wherein the outer walls of the water feeding pipe (5), the water return pipe (6), the water discharge pipe (7) and the circulating pipe (8) are provided with self-limiting heat tracing bands.

5. Open antifreeze photovoltaic power generation system according to claim 4, characterized in that antifreeze solution is placed inside the water supply tank (1) and the water storage tank (2).

6. Open antifreeze photovoltaic power generation system according to claim 5, characterized in that a temperature sensor is arranged in the reserve tank (3).