CN219473989U - Automatic emptying and antifreezing solar heating device for pipeline - Google Patents

Abstract

The utility model discloses an automatic emptying and anti-freezing solar heating device for a pipeline, which comprises a plurality of single-wing headers, a water supply pipeline, a water discharge pipeline, a plurality of vacuum heat collecting pipes arranged at the lower part of each single-wing header and an indoor heat storage water tank filled with water; the middle single-wing headers are connected in series through a connecting pipe; a heat-insulating anti-freezing exhaust pipe is arranged on the connecting pipe or the single-wing header; the water outlet of the sewer pipe is communicated with the inner cavity of the single-wing header through the left side of the left single-wing header, and the water inlet is communicated with the indoor heat storage water tank; the water inlet of the water supply pipeline is inserted into a small section of the first evacuated collector tube on the right side of the right single-wing header, and the lower part of the water supply pipeline is communicated with a submerged pump positioned in the indoor heat storage water tank; the right side and the middle single-wing headers are positioned on the same horizontal plane, and the left side of the left single-wing header is five centimeters higher than the other single-wing headers. By adopting the structure, the water in the pipeline can be automatically emptied, freezing and frosting can not occur, the possibility of freezing and blocking the pipeline is avoided, the pipeline is prevented from being frozen, and the heating device can be normally used.

Description

Automatic emptying and antifreezing solar heating device for pipeline

Technical Field

The utility model belongs to the technical field of solar heating devices, and relates to an automatic pipeline emptying anti-freezing solar heating device.

Background

At present, the commonly used single-wing header type heat collector has the advantages that water in the upper pipeline and the lower pipeline cannot be emptied in time, the upper pipeline and the lower pipeline are frozen and damaged easily in cold seasons, the failure rate is high, and maintenance or replacement cost is increased when the heat collector cannot be used normally. In order to solve the problems, the heat tracing belt is required to carry out upper and lower pipeline deicing every day, so that the normal operation of the heat collector can be ensured, the use is very inconvenient, and the electric energy is consumed.

Disclosure of Invention

The utility model aims to provide the automatic emptying and anti-freezing solar heating device for the pipelines, which has the advantages of simple structure and reasonable design, can automatically empty water in the upper pipeline and the lower pipeline, avoid freezing the upper pipeline and the lower pipeline, and does not need to carry heat to melt ice for the upper pipeline and the lower pipeline.

The utility model adopts the technical scheme that: the device comprises a plurality of single-wing headers, a water supply pipeline, a water drain pipeline, a plurality of vacuum heat collecting pipes arranged at the lower part of each single-wing header and an indoor heat storage water tank filled with water; the method is characterized in that: the inner sides of the two-side single-wing headers are connected in series with the adjacent middle single-wing headers and the middle single-wing headers through connecting pipes, and heat-insulating and anti-freezing exhaust pipes are arranged on the connecting pipes or the single-wing headers; the water outlet of the sewer pipe is communicated with the inner cavity of the single-wing header through the left side of the left single-wing header, and the water inlet is communicated with the upper inner cavity of the indoor heat storage water tank; the upper part of the water supply pipeline is arranged right above the first vacuum heat collecting pipe on the right side of the single-wing header, the water inlet of the water supply pipeline is inserted into a small section of the first vacuum heat collecting pipe on the right side of the single-wing header, the lower part of the water supply pipeline is communicated with a submersible pump positioned at the bottom of the inner cavity of the indoor heat storage water tank, and the submersible pump is controlled by a temperature control switch and is communicated with the inner cavity of the bottom of the indoor heat storage water tank; the bottom of the outer side of the indoor heat storage water tank is provided with a heat transmission pipeline for transmitting a heat source for the indoor heat utilization device; the right single-wing header and the middle single-wing headers are positioned on the same horizontal plane, and the left side of the left single-wing header is five centimeters higher than the other single-wing headers.

When the solar water heater is used in cold seasons, the temperature control switch controls the submersible pump to automatically stop working when sunlight is not available, and at the moment, most of water in the water supply and drainage pipeline and the single-wing header automatically recedes into the indoor heat storage water tank to be stored under the action of gravity, and all pipelines outdoors are completely emptied. The water inlet of the water supply pipeline of a small section is inserted into the right first vacuum heat collecting pipe of the right single-wing header, and most of water in the single-wing header is sucked into the indoor heat storage water tank under the siphon action, so that the water surface is lowered to be lower than the highest position of the water supply pipeline of the right single-wing header. Meanwhile, the left side of the left single-wing header is higher than the other single-wing headers by five centimeters, so that the water outlet of a sewer pipe communicated with the left side is raised by five centimeters, and the water surface is lower than the water outlet of the sewer pipe by five centimeters (when the temperature rise volume of the water in the vacuum heat collecting pipe is increased, the maximum rising amplitude of the water surface in the single-wing header is not more than 5 centimeters, and the maximum rising amplitude of the water temperature in the vacuum pipe is 100 ℃, and the volume expansion coefficient of the water is smaller than 0.003). When the volume of the water in the vacuum heat collecting pipe is increased due to thermal expansion, the water surface is enabled to rise to the water outlet position of the sewer pipe, and the water in the single-wing header is prevented from flowing into the sewer pipe. By adopting the structure, the water in the pipeline can be automatically emptied, the phenomena of icing and frosting can not occur in cold seasons, the possibility of freezing and blocking the pipeline is avoided, the pipeline is prevented from being frozen, the heating device can be normally used, and the maintenance or replacement cost is reduced. Meanwhile, the pipeline does not need to be subjected to pipeline deicing along with the heat belt, so that the pipeline is convenient to use and electric energy is saved.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

In the figure: 1-a vacuum heat collecting tube; 2-an indoor heat storage water tank; 3-single wing headers; 4-a water supply pipeline; 5-a sewer line; 5-1-a water outlet; 6-heat-insulating and antifreezing exhaust pipe; 6-1-a one-way flap valve; 6-2-one-way floating cap valve; 6-3-limiting rods; 6-4 exhaust holes; 6-5-V-shaped frames; 6-6-valve stand; 7-a submersible pump; 8-connecting pipes; 9-water; 10-heat transfer pipeline.

Detailed Description

As shown in fig. 1, the present utility model includes a plurality of single wing headers 3, a water supply pipe 4, a water discharge pipe 5, a plurality of vacuum heat collecting pipes 1 installed at the lower portion of each single wing header 3, and an indoor heat storage water tank 2 filled with water 9. The inner sides of the two-side single-wing headers 3 are connected in series with the adjacent middle single-wing headers 3 and the middle single-wing headers 3 through connecting pipes 8, and the connecting pipes 8 or the single-wing headers 3 are provided with heat-insulating anti-freezing exhaust pipes 6. The water outlet 5-1 of the sewer pipe 5 is communicated with the inner cavity of the single-wing header 3 through the left side of the left single-wing header 3, and the water inlet is communicated with the upper inner cavity of the indoor heat storage water tank 2. The upper part of the water supply pipeline 4 is arranged right above the first evacuated collector tube 1 on the right side of the single-wing header 3, the water inlet 4-1 of the water supply pipeline is inserted into a small section of the first evacuated collector tube 1 on the right side of the single-wing header 3, the lower part of the water supply pipeline is communicated with a submersible pump 7 positioned at the bottom of the inner cavity of the indoor heat storage water tank 2, and the submersible pump 7 is controlled by a temperature control switch and is communicated with the inner cavity of the bottom of the indoor heat storage water tank 2. The bottom of the outer side of the indoor heat storage water tank 2 is provided with a heat transmission pipeline 10 for transmitting a heat source for the indoor heat utilization device. The right single-wing header 3 and the middle single-wing headers 3 are positioned on the same horizontal plane, and the left side of the left single-wing header 3 is five centimeters higher than the other single-wing headers 3.

The outer surface of the heat-preserving and anti-freezing exhaust pipe 6 is coated with black paint with high photo-thermal conversion rate, and the black paint can enable the temperature on the heat-preserving and anti-freezing exhaust pipe to be higher than 0 ℃ under the irradiation of sunlight, so that the function of automatic defrosting is achieved.

The upper part of an exhaust hole 6-4 of the heat-insulating anti-freezing exhaust pipe 6 is sleeved with a one-way floating cap valve 6-2, and a one-way flap valve 6-1 is arranged in the heat-insulating anti-freezing exhaust pipe; an air inlet is arranged on a valve plate at the upper part of the one-way floating cap valve 6-2, a V-shaped frame 6-5 inserted into the heat preservation and anti-freezing exhaust pipe 6 is arranged at the lower part of the valve plate, and the V-shaped frame is matched with a limit rod 6-3 of the V-shaped frame arranged on the inner wall of the heat preservation and anti-freezing exhaust pipe 6 to control the up-and-down floating amplitude of the one-way floating cap valve 6-2; an air inlet hole is arranged on a valve plate of the one-way flap valve 6-1, one end of the valve plate is hinged on the inner wall of the heat-preserving and anti-freezing exhaust pipe 6, and the other end of the valve plate is supported on a valve table 6-6 on the inner wall of the heat-preserving and anti-freezing exhaust pipe 6 when the valve plate is closed. The one-way floating cap valve 6-2 and the one-way flap valve 6-1 respectively regulate the size of the exhaust hole 6-4 through the up-and-down floating and up-and-down turning of the valve plate. When the water in the vacuum heat collecting pipe 1 boils, a large amount of water vapor is generated to push the two valves open, so that the water vapor is smoothly discharged through the exhaust holes, and the vacuum heat collecting pipe 1 is prevented from being broken due to the fact that the air pressure in the single-wing header is too high. When the device just stops working, outside air enters the single-wing header through the air inlets on the two valves, so that the water in the pipeline and the single-wing header automatically returns into the indoor heat storage water tank 2.

Claims (3)

1. The automatic pipeline emptying and antifreezing solar heating device comprises a plurality of single-wing headers (3), a water supply pipeline (4), a water drain pipeline (5), a plurality of vacuum heat collecting pipes (1) arranged at the lower part of each single-wing header (3) and an indoor heat storage water tank (2) filled with water (9); the method is characterized in that: the inner sides of the two-side single-wing headers (3) are connected in series with the adjacent middle single-wing headers (3) and the middle single-wing headers (3) through connecting pipes (8), and the connecting pipes (8) or the single-wing headers (3) are provided with heat-insulating and anti-freezing exhaust pipes (6); the water outlet (5-1) of the sewer pipe (5) is communicated with the inner cavity of the single-wing header (3) through the left side of the left single-wing header (3), and the water inlet is communicated with the upper inner cavity of the indoor heat storage water tank (2); the upper part of the water supply pipeline (4) is arranged right above the first vacuum heat collecting pipe (1) on the right side of the single-wing header (3), the water inlet (4-1) of the water supply pipeline is inserted into a small section in the first vacuum heat collecting pipe (1) on the right side of the single-wing header (3), the lower part of the water supply pipeline is communicated with a submersible pump (7) positioned at the bottom of the inner cavity of the indoor heat storage water tank (2), and the submersible pump (7) is controlled by a temperature control switch and is communicated with the inner cavity at the bottom of the indoor heat storage water tank (2); the bottom of the outer side of the indoor heat storage water tank (2) is provided with a heat transmission pipeline (10) for transmitting a heat source for the indoor heat utilization device; the right single-wing header (3) and the middle single-wing headers (3) are positioned on the same horizontal plane, and the left side of the left single-wing header (3) is five centimeters higher than the other single-wing headers (3).

2. The automatic pipeline emptying and antifreezing solar heating device as claimed in claim 1, wherein: the outer surface of the heat-insulating anti-freezing exhaust pipe (6) is coated with black paint with high photo-thermal conversion rate.

3. A solar heating installation with automatic evacuation and freeze protection for pipes according to claim 1 or 2, characterized in that: the upper part of an exhaust hole (6-4) of the heat-insulating anti-freezing exhaust pipe (6) is sleeved with a one-way floating cap valve (6-2), and a one-way flap valve (6-1) is arranged in the heat-insulating anti-freezing exhaust pipe; an air inlet is arranged on a valve plate at the upper part of the one-way floating cap valve (6-2), a V-shaped frame (6-5) inserted into the heat preservation and anti-freezing exhaust pipe (6) is arranged at the lower part of the valve plate, and the V-shaped frame is matched with a limit rod (6-3) of the V-shaped frame arranged on the inner wall of the heat preservation and anti-freezing exhaust pipe (6) to control the up-down floating amplitude of the one-way floating cap valve (6-2); an air inlet is arranged on a valve plate of the one-way flap valve (6-1), one end of the valve plate is hinged on the inner wall of the heat-preserving and anti-freezing exhaust pipe (6), and the other end of the valve plate is supported on a valve table (6-6) on the inner wall of the heat-preserving and anti-freezing exhaust pipe (6) when the valve plate is closed.