Overhead self-flowing type solar centralized water supply system

Abstract

The utility model discloses a high-level self-flowing type solar centralized water supply system which comprises a water replenishing subsystem, a solar temperature adjusting subsystem and a hot water supply circulation subsystem. The water replenishing subsystem comprises a municipal pipeline, a steady flow tank, a water softener, a water tank, a silicon-phosphorus crystal processor, a first water replenishing pipe, a second bypass pipe and a second water replenishing pipe; the solar temperature adjusting subsystem comprises a water mixing tank, a solar heat collector, a high-position heat preservation water tank, a circulating pump set and a direct connecting pipe. The hot water supply circulation subsystem comprises a self-flowing type user hot water pipe network, a heat supply frequency conversion booster pump set and a water return pipe. Softening treatment and silicon-phosphorus crystal treatment are carried out on supplied hot water in the earlier stage, scaling of a hot water supply pipe network, metal corrosion and safety of hot water using of a user are greatly delayed, the system adopts the water mixing tank as transition to supply water to the user, the water temperature of stored water in the heat preservation water tank can be increased, and therefore the heat storage amount is adjusted; the solar heat collector and the adjacent pipeline thereof adopt an anti-freezing design, and can be automatically emptied in low-temperature weather.

Description

Technical Field

[0001] This utility model relates to the field of centralized heating, and in particular to a solar-powered centralized heating system. Background Technology

[0002] The biggest advantage of using a high-level insulated water tank for water supply is that the heat transfer medium, the heat storage medium, and the hot water supplied to users are all a single substance—water. This avoids the excessive piping and equipment required to achieve heat exchange when the medium and water are different substances, making the system simpler. However, its disadvantages are as follows: First, the longer flow distance of the hot water in the pipes leads to scaling and corrosion in the system, and also greatly increases the amount of harmful impurities in the water. Second, water left in the solar collector as a heat transfer medium is prone to freezing damage to the solar collector under low temperature or low light conditions, requiring a simple method of venting. Third, considering that water is a heat storage medium, in order to increase its heat storage capacity, the water temperature needs to be increased during periods of sufficient sunlight to supply hot water when sunlight is insufficient. However, the hot water supplied to users should not exceed 50°C, which contradicts the need to increase the temperature of water as a heat storage medium. Utility Model Content

[0003] To overcome the above-mentioned defects, the purpose of this utility model is to propose a high-mounted self-flowing solar centralized water supply system, including: a water replenishment subsystem, a solar temperature regulation subsystem, and a hot water circulation subsystem;

[0004] The water replenishment subsystem includes a municipal pipeline, a flow stabilizer tank, a water softener, a water tank, a silicon phosphate crystal processor, a first water replenishment pipe, a second bypass pipe, and a second water replenishment pipe.

[0005] The municipal pipeline, the flow stabilizer, the water softener, and the water tank are connected in sequence by pipelines;

[0006] An electric valve is installed at the connection point between the municipal pipeline and the flow stabilizer tank.

[0007] A booster pump is installed at the connection pipe between the flow stabilizer tank and the water softener;

[0008] The water outlet end of the connecting pipe between the water softener and the water tank is equipped with a float valve.

[0009] The water tank is provided with a first bypass pipe, the inlet of which is connected to the outlet of the municipal pipeline, and the outlet of which is connected to the water tank.

[0010] The first bypass pipe is equipped with an electric valve, and the water outlet end of the first bypass pipe is equipped with the float valve;

[0011] The water tank is equipped with a level gauge, and the water tank is equipped with a laundry room variable frequency booster pump, a user variable frequency booster pump set, and a water replenishment pump.

[0012] The water tank outlet is connected to the laundry room variable frequency booster pump, the user variable frequency booster pump group, and the water supply pump via a parallel water pipe.

[0013] The water pump, the silicon phosphorus crystal processor, the first water supply pipe and the second water supply pipe are connected in sequence through pipes;

[0014] An electric valve is installed at the end of the first water supply pipe;

[0015] The inlet and outlet of the silicon phosphate crystal processor are connected to the second bypass pipe.

[0016] An electric valve is installed at the second bypass pipe;

[0017] The above equipment performs two-step water treatment:

[0018] Step 1: Use a water softener to treat municipal water, which can be used for laundry rooms in public buildings such as hotels or for daily water use by users, and provides corresponding variable frequency booster pipelines for water supply.

[0019] The second step, based on water softening, involves using a silicon phosphate crystal processor to further process the water, resulting in dissolved silicon phosphate crystals in the hot water. Its main components, polyphosphates and polysilicates, act as scale inhibitors and metal corrosion protectants in the water, extending equipment lifespan, reducing maintenance costs, and helping to maintain the stability and quality of the hot water supply.

[0020] In the application of the system, the above two water treatment steps can also be omitted, that is, the municipal pipeline water enters the water tank directly through the first bypass pipe; the water from the water replenishment pump enters the mixing tank directly through the second bypass pipe and the second water replenishment pipe, or enters the insulated water tank directly through the second bypass pipe and the second water replenishment pipe.

[0021] The solar temperature regulation subsystem includes a mixing tank, a solar collector, an elevated insulated water tank, a circulating pump set, and a direct connection pipe.

[0022] The high-level insulated water tank is equipped with a connecting pipe at its water inlet end;

[0023] The hot water circulation subsystem includes: a gravity-flow user hot water pipe network, a heating frequency conversion booster pump set, and a return water pipe;

[0024] The inlet of the gravity-flow user hot water pipe network is connected to the bottom of the mixing tank;

[0025] The gravity-flow user hot water pipe network, the heating frequency conversion booster pump set, and the return water pipe are connected sequentially along the water flow direction;

[0026] The mixing tank includes a first inlet pipe, a second inlet pipe, an electric heater, a temperature sensor, and the level gauge;

[0027] The electric heater, the level gauge, and the temperature sensor are respectively embedded in the mixing tank body;

[0028] The outlet end of the return water pipe and the first water supply pipe are connected to the inlet end of the first water inlet pipe, and the first water inlet pipe extends into the bottom of the mixing tank.

[0029] The solar collector, the connecting pipe, the high-level insulated water tank, the circulating pump set, and the direct connection pipe are connected in a closed loop in sequence.

[0030] The purpose of installing a mixing tank instead of directly supplying hot water using an insulated water tank:

[0031] First, the maximum temperature of the water in the elevated insulated water tank can be increased (e.g., to 80°C), which greatly increases the heat storage capacity and can be used to supply hot water during periods without sunlight. However, water above 50°C should not be supplied directly to users. Instead, room temperature water can be injected into the mixing tank through the first inlet pipe and high temperature water injected through the second inlet pipe to mix and achieve a suitable water temperature.

[0032] Secondly, when the water temperature in the insulated water tank is below 40°C, an electric heater can be used in the smaller mixing tank to heat the water more quickly. The smaller amount of water required for heating is also more energy-efficient.

[0033] The solar collector is sloped along the water flow direction, and the temperature sensor is installed at the water outlet end of the solar collector.

[0034] The level gauge and the temperature sensor are respectively embedded in the high-level insulated water tank.

[0035] The outlet of the second water supply pipe extends to the bottom of the high-level insulated water tank, and the electric valve is provided on the outer pipe of the second water supply pipe near the high-level insulated water tank.

[0036] The second water inlet pipe is connected to the front section of the straight connecting pipe at its inlet end. The outlet end of the second water inlet pipe extends to the bottom of the mixing tank. The middle and rear sections of the straight connecting pipe and the second water inlet pipe are respectively equipped with electric valves. The middle section of the straight connecting pipe slopes towards the second water inlet pipe.

[0037] The solar-powered water supply subsystem operates in two parts:

[0038] The first part involves heating the water in the insulated water tank during periods of ample sunlight. The heating cycle is initiated when the temperature difference monitored by the temperature sensor at the outlet of the solar collector and the temperature sensor in the insulated water tank meets the required threshold and the water temperature in the insulated water tank has not reached its upper limit. A solar heating circulation loop is formed by the insulated water tank, the circulation pump set, the direct connection pipe, the solar collector, and the connecting pipe. At this time, the electric valves in the middle and rear sections of the direct connection pipe open, and the circulation pump set starts, achieving the circulating heating of the water in the insulated water tank.

[0039] To prevent the water in the solar collector from freezing and damaging the pipes due to lack of sunlight and low temperatures, a water return scheme is implemented in the solar heating circulation loop when it stops operating. Specifically, the circulating water pump in the solar heating circulation loop is turned off, and the electric valves in the middle and rear sections of the direct connection pipe are opened. This allows the water stored in the direct connection pipe to flow back to the mixing tank through the second inlet pipe due to gravity. The water stored in the solar collector enters the insulated water tank through the connecting pipe due to gravity.

[0040] The second part involves the insulated water tank replenishing hot water to the mixing tank. The standard for initiating hot water replenishment to the mixing tank is when the temperature difference monitored by the temperature sensor in the insulated water tank and the temperature sensor in the mixing tank reaches a required level, and the water temperature in the mixing tank does not meet the standard.

[0041] When the solar heating circulation loop is activated, the electric valve of the second water inlet pipe opens to replenish hot water to the mixing tank.

[0042] During periods when the solar heating circulation loop is not operating, the insulated water tank, the circulation pump, the direct connection pipe, and the second inlet pipe constitute the hot water supply pipeline for the mixing tank. At this time, the circulation pump is activated, the electric valve on the second inlet pipe is opened, and the electric valve in the middle section of the direct connection pipe is closed, thereby replenishing the mixing tank with hot water.

[0043] When the water temperature in the mixing tank is below standard and the temperature difference between the water temperature in the insulated water tank and the water temperature in the mixing tank does not meet the requirements, the electric valve of the second water inlet pipe is closed, and the electric heater heats the mixing tank.

[0044] The advantages and positive effects of this utility model are as follows: the hot water supplied has undergone softening and silicon phosphate crystal treatment in the early stage, which greatly delays the scaling and metal corrosion of the hot water supply network and the safety of users when using hot water. The system uses a mixing tank as a transition to supply water to users, which can increase the water temperature in the insulated water tank, thereby regulating the heat storage. The solar collector and its adjacent pipes are designed to prevent freezing, and can be automatically emptied in low temperature weather. Attached Figure Description

[0045] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0046] Figure 1 This is a schematic diagram of the elevated self-flowing solar-powered centralized water supply system of this utility model.

[0047] In the diagram, the components are: Water Replenishment Subsystem-1, Municipal Pipeline-11, Flow Stabilizer-12, Water Softener-13, Water Tank-14, Laundry Room Variable Frequency Booster Pump-141, User Variable Frequency Booster Pump Set-142, Water Replenishment Pump-143, First Bypass Pipe-144, Silicon Phosphorus Crystal Processor-15, First Water Replenishment Pipe-16, Second Bypass Pipe-17, Second Water Replenishment Pipe-18, Solar Temperature Regulation Subsystem-2, Mixing Tank-21, and... Water inlet pipe-211, second water inlet pipe-212, electric heater-213, solar collector-22, high-level insulated water tank-23, connecting pipe-231, circulating pump set-24, direct connection pipe-25, hot water circulation subsystem-3, gravity-flow user hot water network-31, heating frequency conversion booster pump set-32, return water pipe-33, temperature sensor-a, electric valve-b, float valve-c, level gauge-d. Detailed Implementation

[0048] The present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0049] like Figure 1 As shown, Example 1:

[0050] Includes: Water replenishment subsystem 1, solar temperature regulation subsystem 2, and hot water circulation subsystem 3;

[0051] The water supply subsystem 1 includes a municipal pipeline 11, a flow stabilizing tank 12, a water softener 13, a water tank 14, a silicon phosphate crystal processor 15, a first water supply pipe 16, a second bypass pipe 17, and a second water supply pipe 18.

[0052] Municipal pipeline 11, flow stabilizer 12, water softener 13, and water tank 14 are connected in sequence;

[0053] An electric valve b is installed at the connection point between the municipal pipeline 11 and the flow stabilizer tank 12;

[0054] A booster pump 131 is installed at the connection pipe between the flow stabilizer tank 12 and the water softener 13;

[0055] A float valve c is installed at the outlet end of the connecting pipe between the water softener 13 and the water tank 14;

[0056] A first bypass pipe 144 is provided outside the water tank 14. The inlet end of the first bypass pipe is connected to the outlet end of the municipal pipeline 11, and the outlet end of the first bypass pipe is connected to the water tank 14.

[0057] The first bypass pipe 144 is equipped with an electric valve b, and the water outlet end of the first bypass pipe is equipped with a float valve c;

[0058] The water tank 14 is equipped with a level gauge d, and the water tank 14 is equipped with a laundry room variable frequency booster pump 141, a user variable frequency booster pump group 142, and a water replenishment pump 143.

[0059] The water outlet of water tank 14 is connected to the water pipe of laundry room variable frequency booster pump 141, user variable frequency booster pump group 142, and water supply pump 143.

[0060] The water pump 143, the silicon phosphor crystal processor 15, the first water supply pipe 16 and the second water supply pipe 18 are connected in sequence through the water inlet.

[0061] An electric valve b is installed at the end of the first water supply pipe 16;

[0062] The water inlet and outlet of the silicon phosphor crystal processor 15 are connected to the second bypass pipe 17.

[0063] An electric valve b is installed at point 17 of the second bypass pipe;

[0064] The solar temperature regulation subsystem 2 includes a mixing tank 21, a solar collector 22, an elevated insulated water tank 23, a circulating pump set 24, and a direct connection pipe 25;

[0065] The high-level insulated water tank 23 is equipped with a connecting pipe 231 at the water inlet end;

[0066] The hot water circulation subsystem 3 includes: a gravity-flow user hot water pipe network 31, a heating frequency conversion booster pump set 32, and a return water pipe 33;

[0067] The inlet of the gravity-flow user hot water pipe network 31 is connected to the bottom of the mixing tank 21;

[0068] The gravity-flow user hot water pipe network 31, the heating frequency conversion booster pump set 32, and the return water pipe 33 are connected sequentially along the water flow direction;

[0069] The mixing tank 21 includes a first inlet pipe 211, a second inlet pipe 212, an electric heater 213, a temperature sensor a, and a level gauge d;

[0070] The electric heater 213, the level gauge d, and the temperature sensor a are respectively embedded in the mixing tank 21.

[0071] The outlet of the return water pipe 33 and the first water supply pipe 16 are connected to the inlet of the first water inlet pipe 211, which extends into the bottom of the mixing tank 21.

[0072] The solar collector 22, connecting pipe 231, high-level insulated water tank 23, circulating pump set 24, and direct connecting pipe 25 are connected in a closed loop in sequence.

[0073] The solar collector 22 is sloped along the direction of water flow, and a temperature sensor a is installed at the water outlet of the solar collector.

[0074] The level gauge d and the temperature sensor a are respectively embedded in the body of the high-level insulated water tank 23;

[0075] The outlet of the second water supply pipe 18 extends to the bottom of the high-level insulated water tank 23. An electric valve b is provided on the pipe near the outside of the high-level insulated water tank 23.

[0076] The inlet end of the second water inlet pipe 212 is connected to the front section of the straight connecting pipe 25. The outlet end of the second water inlet pipe extends to the bottom of the mixing tank 21. The middle and rear sections of the straight connecting pipe and the second water inlet pipe are respectively equipped with electric valves b. The middle section of the straight connecting pipe slopes towards the second water inlet pipe.

[0077] The present invention has been described in detail above through embodiments, but the content is only a preferred embodiment of the present invention and should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A high-mounted gravity-flow solar-powered centralized water supply system, characterized in that, include: Water replenishment subsystem (1), solar temperature regulation subsystem (2), hot water circulation subsystem (3); The water replenishment subsystem (1) includes a municipal pipeline (11), a flow stabilizer (12), a water softener (13), a water tank (14), a silicon phosphate crystal processor (15), a first water replenishment pipe (16), a second bypass pipe (17), and a second water replenishment pipe (18). The municipal pipeline (11), the flow stabilizer (12), the water softener (13), and the water tank (14) are connected in sequence by pipelines; An electric valve (b) is provided at the connection between the municipal pipeline (11) and the flow stabilizer (12). A booster pump (131) is provided at the connection pipe between the flow stabilizer (12) and the water softener (13). A float valve (c) is provided at the outlet end of the connecting pipe between the water softener (13) and the water tank (14). The water tank (14) is provided with a first bypass pipe (144) outside, the water inlet of the first bypass pipe is connected to the water outlet of the municipal pipeline (11), and the water outlet of the first bypass pipe is connected to the water tank (14). The first bypass pipe (144) is equipped with an electric valve (b), and the water outlet end of the first bypass pipe is equipped with the float valve (c). The water tank (14) is equipped with a level gauge (d), and the water tank (14) is equipped with a laundry room variable frequency booster pump (141), a user variable frequency booster pump group (142), and a water replenishment pump (143) outside the water tank (14). The outlet of the water tank (14) is connected to the water supply pipe of the laundry room variable frequency booster pump (141), the user variable frequency booster pump group (142), and the water supply pump (143); The water supply pump (143), the silicon phosphorus crystal processor (15), the first water supply pipe (16) and the second water supply pipe (18) are connected in sequence through the water inlet; An electric valve (b) is provided at the end of the first water supply pipe (16); The water inlet and outlet of the silicon phosphorus crystal processor (15) are connected to the second bypass pipe (17). An electric valve (b) is provided at the second bypass pipe (17); The solar temperature regulation subsystem (2) includes a mixing tank (21), a solar collector (22), an elevated insulated water tank (23), a circulating pump group (24), and a direct connection pipe (25). The high-level insulated water tank (23) is equipped with a connecting pipe (231) at the water inlet end; The hot water circulation subsystem (3) includes: a gravity-flow user hot water network (31), a heating frequency conversion booster pump set (32), and a return water pipe (33). The inlet of the gravity-flow user hot water pipe network (31) is connected to the bottom of the mixing tank (21); The gravity-flow user hot water pipe network (31), the heating frequency conversion booster pump group (32), and the return water pipe (33) are connected sequentially along the water flow direction; The mixing tank (21) includes a first inlet pipe (211), a second inlet pipe (212), an electric heater (213), a temperature sensor (a), and the level gauge (d); The electric heater (213), the level gauge (d), and the temperature sensor (a) are respectively embedded in the mixing tank (21); The return water pipe (33) and the outlet end of the first water supply pipe (16) are connected to the inlet end of the first water inlet pipe (211), and the first water inlet pipe extends into the bottom of the mixing tank (21). The solar collector (22), the connecting pipe (231), the high-level insulated water tank (23), the circulating pump group (24), and the direct connecting pipe (25) are connected in a closed loop in sequence. The solar collector (22) is sloped along the water flow direction, and the temperature sensor (a) is provided at the water outlet end of the solar collector. The level gauge (d) and the temperature sensor (a) are respectively embedded in the high-level insulated water tank (23); The outlet of the second water supply pipe (18) extends to the bottom of the high-level insulated water tank (23), and the electric valve (b) is provided on the outer pipe of the second water supply pipe near the high-level insulated water tank (23). The second water inlet pipe (212) is connected to the front section of the straight connecting pipe (25) at the water inlet end. The water outlet end of the second water inlet pipe extends to the bottom of the mixing tank (21). The middle and rear sections of the straight connecting pipe and the second water inlet pipe are respectively equipped with electric valves (b). The middle section of the straight connecting pipe slopes towards the second water inlet pipe.

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