Novel high-temperature water direct-connection water mixing unit

Abstract

The utility model discloses a novel high-temperature water direct-connection water mixing unit, which relates to the field of heating and heat supply and comprises a first-network water supply pipeline, a second-network water supply pipeline, a first-network water return pipeline and a second-network water return pipeline. And the two-network water return pipeline is divided into two branches. According to the novel high-temperature water direct-connection water mixing unit, high-temperature water can enter the water mixing unit to be directly supplied without being limited to low-temperature water heat supply, the pressure of a first-network water supply pipeline is reduced through a pressure reducing device, meanwhile, one part of a second-network water return pipeline passes through a water mixing pump, and then the passing flow is adjusted through an electric adjusting valve; and the other part of water is pressurized through the pressure pump to reach the target pressure, so that the water can normally return to the main pipe of the first network, the unit can be applied to the areas where high-temperature water is directly supplied and the operation pressure of the second network is relatively low, and the limitation of the existing public technology is solved.

Description

Technical Field

[0001] This utility model relates to the field of heating and heat supply technology, specifically a novel high-temperature water direct-connection mixing unit. Background Technology

[0002] In recent years, the urbanization process has accelerated and the scale of cities has continued to expand. New residential communities, commercial complexes, and public buildings have sprung up like mushrooms after rain, and the demand for heating has continued to rise. When faced with large-scale heating, traditional heating units are limited by their own design capacity and transmission capacity, making it difficult to meet the ever-increasing heat load demand. For example, during the peak heating season in winter, some heating networks and units in some old urban areas often experience insufficient heating in some areas, and the room temperature is difficult to reach the standard, which seriously affects the quality of life of residents.

[0003] To address the aforementioned deficiencies, the existing technology (Chinese patent with publication number CN211424515U, publication date 2020-09-04) presents a temperature sensor that transmits temperature signals to the PLC frequency converter control cabinet in real time to adjust the end water temperature, achieving high efficiency and energy saving. A baffle is installed at the top inside the mixing tank, with the bottom of the baffle lower than the low-temperature water inlet and the mixed water outlet, to prevent low-temperature water from being discharged directly into the mixed water outlet before being evenly mixed with high-temperature water, thus maintaining a stable water temperature supply.

[0004] The above solution involves mixing the low-temperature water from the primary network with the return water from the secondary network, then pressurizing it before sending it to the household. This method is limited to low-temperature water heating and cannot meet the requirement of direct supply of high-temperature water. It is also suitable for areas where the pressure difference between the primary and secondary networks is relatively large. Summary of the Invention

[0005] The purpose of this utility model is to provide a new type of high-temperature water direct-connection mixing unit to solve the problem mentioned in the background art that the existing mixing units use a method of mixing low-temperature water from the primary network with return water from the secondary network before pressurizing and sending it to the user end, which is limited to low-temperature water heating and cannot meet the requirements of direct high-temperature water supply and is applicable to areas with a large pressure difference between the primary and secondary networks.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel high-temperature water direct-connection mixing unit, the mixing unit comprising a primary water supply pipeline, a secondary water supply pipeline, a primary return water pipeline, and a secondary return water pipeline; the primary water supply pipeline is equipped with a power-off reset function electrically adjustable valve, the right side of the power-off reset function electrically adjustable valve is connected to a pressure reducing valve, the output end of the pressure reducing valve is equipped with a local pressure gauge A connected via a welded ball valve A, and the primary water supply pipeline is connected to the secondary water supply pipeline; A remote pressure gauge is installed on the secondary water supply pipeline, and a remote thermometer is installed to the right of the remote pressure gauge. An electric pressure relief valve is installed to the right of the remote thermometer. The secondary water supply pipeline is connected to the secondary return water pipeline through a welded ball valve B. The secondary return water pipeline is divided into two branches, and the two branches are respectively connected to the secondary water supply pipeline, the secondary return water pipeline, and the primary return water pipeline. The primary return water pipeline is connected to the primary water supply pipeline through a welded ball valve A.

[0007] Furthermore, the pressure of the primary water supply pipeline is reduced by a pressure reducing valve before reaching the mixing pipe. At the same time, the secondary return water pipeline splits into two branches. Branch one (mixing pipe) passes through a mixing valve and then an electric regulating valve to adjust the flow rate so that the water temperature after mixing with the primary water supply pipeline reaches the set value. Branch two is pressurized by a booster pump to reach the target pressure so that it can return water normally to the primary main pipe.

[0008] Furthermore, a welded ball valve B is installed on the branch of the secondary water return pipeline that connects to the secondary water supply pipeline. The upper part of the welded ball valve B is connected to the mixing valve. The mixing valve is located in the middle of the mixing pipeline. An electric regulating valve is installed outside the inlet of the mixing valve. The upper part of the electric regulating valve is connected to the secondary water supply pipeline through a welded ball valve C.

[0009] Furthermore, a welded ball valve D is installed on the secondary return water pipeline, and a local pressure gauge B is connected to the output end of the welded ball valve D. A booster pump is installed in the middle of the connecting pipeline between the secondary return water pipeline and the primary return water pipeline. The right side of the connecting pipeline between the secondary return water pipeline and the primary return water pipeline is connected to the secondary return water pipeline through a welded ball valve E, and a local pressure gauge B is installed at the end of the welded ball valve E.

[0010] Furthermore, the left side of the connecting pipe between the secondary return water pipeline and the primary return water pipeline is connected to the primary circuit via a check valve, and a local pressure gauge C is installed at the end of the check valve.

[0011] Furthermore, the cooperation between the pressure reducing valve, mixing valve, and booster pump enables the unit to be used in areas where the operating pressure of the secondary power grid is much lower than that of the primary power grid.

[0012] Furthermore, the cooperation between the pressure reducing valve, the power-off reset function electric regulating valve, and the electric pressure relief valve ensures the safe and stable operation of the entire system.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This new type of high-temperature water direct-connection mixing unit directly mixes the high-temperature water supplied from the primary network with the low-temperature return water from the secondary network and supplies it to the household heating system. It is suitable for areas with high-temperature water heating but relatively low pressure in the secondary network pipeline.

[0015] Furthermore, a heating system that directly mixes the high-temperature water supplied from the primary network with the low-temperature return water from the secondary network before supplying it to the household is suitable for high-temperature water heating. This avoids the heat loss in traditional plate heat exchangers where "not all the heat from the primary network can be transferred to the secondary network," and allows the unit to be used in areas with direct high-temperature water supply and relatively low operating pressure in the secondary network pipelines, thus overcoming the limitations of existing technologies.

[0016] Furthermore, through the cooperation of pressure reducing devices, mixing pumps, and booster pumps, this type of unit can be used in areas where the operating pressure of the secondary pipeline is much lower than that of the primary pipeline.

[0017] Furthermore, the safe and stable operation of the entire system can be ensured through the cooperation of pressure reducing devices, power-off reset electric regulating valves, and electric pressure relief valves. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the heating mixing unit system of this utility model.

[0019] In the diagram: 1. Power-off reset function electric regulating valve; 2. Pressure reducing valve; 3. Local pressure gauge A; 4. Welded ball valve A; 5. Remote pressure gauge; 6. Remote thermometer; 7. Electric pressure relief valve; 8. Welded ball valve B; 9. Mixing valve; 10. Electric regulating valve; 11. Welded ball valve C; 12. Welded ball valve D; 13. Local pressure gauge B; 14. Booster pump; 15. Local pressure gauge C; 16. Check valve; 17. Welded ball valve E. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1This utility model provides the following technical solution: A novel high-temperature water direct-connection mixing unit, comprising a primary water supply pipeline, a secondary water supply pipeline, a primary return water pipeline, and a secondary return water pipeline. The primary water supply pipeline is equipped with a power-off reset function electrically adjustable valve 1. A pressure reducing valve 2 is connected to the right side of the power-off reset function electrically adjustable valve 1. The output end of the pressure reducing valve 2 is equipped with a local pressure gauge A3 connected via a welded ball valve A4. The primary water supply pipeline is connected to the secondary water supply pipeline. A remote pressure gauge 5 is installed on the water supply pipeline. A remote thermometer 6 is installed to the right of the remote pressure gauge 5. An electric pressure relief valve 7 is installed to the right of the remote thermometer 6. The secondary water supply pipeline is connected to the secondary return water pipeline through a welded ball valve B8. The secondary return water pipeline is divided into two branches, and the two branches are respectively connected to the secondary water supply pipeline, the secondary return water pipeline, and the primary return water pipeline. The primary return water pipeline is connected to the primary water supply pipeline through a welded ball valve A4.

[0022] During operation, in the heating season, the primary water supply pipeline enters the pipeline through the power-off reset function electric regulating valve 1 and pressure reducing valve 2. Pressure reducing valve 2 reduces the water pressure. By reducing the pressure of the high-temperature water supply from the primary network and mixing it with the return water from the secondary network before supplying it to the user, this avoids the heat loss in traditional plate heat exchangers where "not all the heat from the primary network can be transferred to the secondary network." It also allows this unit to be used in areas with direct high-temperature water supply and relatively low operating pressure in the secondary network, overcoming the limitations of existing technologies. Welded ball valve A4 and local pressure gauge A3 monitor the primary water supply pipeline. Remote pressure gauge 5, remote thermometer 6, and electric pressure relief valve 7 on the secondary water supply pipeline regulate the water pressure and temperature at the secondary water supply pipeline. The secondary water supply pipeline and the primary... After the main water supply pipeline is connected, the mixing pipeline between the main water supply pipeline and the secondary water return pipeline is connected through two branch pipelines. Branch 1 (mixing pipeline) passes through mixing valve 9 and then through electric regulating valve 10 to adjust the flow rate so that the water temperature after mixing with the main water supply pipeline reaches the set value. Branch 2 is pressurized by booster pump 14 to reach the target pressure so that it can return water normally to the main main pipeline of the primary network. This allows high-temperature water to directly enter the mixing unit, which solves the limitation of the previous mixing unit using low-temperature water. It reduces the pressure of the primary high-temperature water, so that the direct-connection mixing unit system can be used in areas with relatively low pressure in the secondary network. The power failure reset electric regulating valve can automatically cut off the valve of the primary water supply pipeline in the event of power failure or pressure exceeding the standard, ensuring system safety.

[0023] Example 2: Based on Example 1, a branch pipeline 1 is also disclosed, the specific structure of which is as follows: The pressure of the first network water supply pipeline is reduced by the pressure reducing valve 2 before reaching the mixing pipe. At the same time, the second network return water pipeline is divided into two branches. The first branch mixing pipe passes through the mixing valve 9 and then the electric regulating valve 10 to adjust the flow rate so that the water temperature after mixing with the first network water supply pipeline reaches the set value. The second branch is pressurized by the booster pump 14 to reach the target pressure so that it can return water normally to the first network main pipe. A welded ball valve B8 is installed on the branch of the pipeline connecting the second network return water pipeline and the second network water supply pipeline. The upper part of the welded ball valve B8 is connected to the mixing valve 9. The mixing valve 9 is located in the middle of the mixing pipeline. An electric regulating valve 10 is installed outside the inlet of the mixing valve 9. The upper part of the electric regulating valve 10 is connected to the second network water supply pipeline through the welded ball valve C11.

[0024] The pressure of the primary water supply pipeline is reduced by a pressure reducing device before reaching the mixing pipe. At the same time, the secondary return water pipeline splits into two branches. The mixing pipe of the branch passes through the mixing valve 9 and then through the electric regulating valve 10 to adjust the flow rate so that the water temperature after mixing with the primary water supply pipeline reaches the set value.

[0025] Example 3: Based on Example 2, a second branch pipeline is also disclosed, the specific structure of which is as follows: A welded ball valve D12 is installed on the secondary return water pipeline, and a local pressure gauge B13 is connected to the output end of the welded ball valve D12. A booster pump 14 is installed in the middle of the connecting pipeline between the secondary return water pipeline and the primary return water pipeline. The right side of the connecting pipeline between the secondary return water pipeline and the primary return water pipeline is connected to the secondary return water pipeline through a welded ball valve E17, and a local pressure gauge B13 is installed at the end of the welded ball valve E17. The secondary return water pipeline and the primary return water pipeline... The left side of the return water pipeline is connected to the primary network circuit via a check valve 16. A local pressure gauge C15 is installed at the end of the check valve 16. The cooperation of the pressure reducing valve 2, the mixing valve 9, and the booster pump 14 enables the unit to be used in areas where the operating pressure of the secondary network pipeline is much lower than that of the primary network pipeline. The cooperation of the pressure reducing valve 2, the power-off reset function electric regulating valve 1, and the electric pressure relief valve 7 ensures the safe and stable operation of the entire system. The booster pump 14 pressurizes the system to reach the target pressure, allowing it to return water normally to the primary network main pipe.

[0026] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel high-temperature water direct-connected water mixing unit, characterized in that: The water mixing unit comprises a first network water supply pipeline, a second network water supply pipeline, a first network water return pipeline and a second network water return pipeline; The first network water supply pipeline is provided with a power-off reset function electric valve (1), the right side of the power-off reset function electric valve (1) is connected with a pressure reducing valve (2), the output end of the pressure reducing valve (2) is provided with a local pressure gauge A (3) connected with a welding ball valve A (4), and the first network water supply pipeline is communicated with the second network water supply pipeline. The second network water supply pipeline is provided with a remote pressure gauge (5), the right side of the remote pressure gauge (5) is provided with a remote thermometer (6), the right side of the remote thermometer (6) is provided with an electric pressure relief valve (7), and the second network water supply pipeline is communicated with the second network water return pipeline through a welding ball valve B (8). The second network water return pipeline is divided into two branches, and the two branches are communicated with the second network water supply pipeline and the pipeline connected between the second network water return pipeline and the first network water return pipeline, respectively, and the first network water return pipeline is communicated with the first network water supply pipeline through the welding ball valve A (4).

2. The novel high-temperature water direct-connected water mixing unit according to claim 1, characterized in that: The first network water supply pipeline passes through the pressure reducing valve (2) to reduce the pressure of the first network water supply pipeline, and reaches the water mixing pipeline, meanwhile, the second network water return pipeline is divided into two branches, one branch of the water mixing pipeline passes through a water mixing valve (9) and then passes through an electric regulating valve (10) to adjust the flow rate, so that the water supply temperature after mixing with the first network water supply pipeline reaches a set value, and the other branch reaches the target pressure through a pressure pump (14) to normally return water to the first network main pipeline.

3. The novel high-temperature water direct-connected water mixing unit according to claim 1, characterized in that: The pipeline branch communicated between the second network water return pipeline and the second network water supply pipeline is provided with the welding ball valve B (8), the upper portion of the welding ball valve B (8) is communicated with the water mixing valve (9), the water mixing valve (9) is located in the middle of the mixing pipeline, the outside of the inlet of the water mixing valve (9) is provided with the electric regulating valve (10), and the upper portion of the electric regulating valve (10) is communicated with the second network water supply pipeline through a welding ball valve C (11).

4. The novel high-temperature water direct-connected water mixing unit according to claim 1, characterized in that: The second network water return pipeline is provided with a welding ball valve D (12), the output end of the welding ball valve D (12) is connected with a local pressure gauge B (13), the middle portion of the pipeline communicated between the second network water return pipeline and the first network water return pipeline is provided with the pressure pump (14), the right side of the pipeline communicated between the second network water return pipeline and the first network water return pipeline is communicated with the second network water return pipeline through a welding ball valve E (17), and the end of the welding ball valve E (17) is provided with the local pressure gauge B (13).

5. The novel high-temperature water direct-connected water mixing unit according to claim 4, characterized in that: The left side of the pipeline communicated between the second network water return pipeline and the first network water return pipeline is communicated with the first network loop through a check valve (16), and the end of the check valve (16) is provided with a local pressure gauge C (15).

6. The novel high-temperature water direct-connected water mixing unit according to claim 1, characterized in that: The pressure reducing valve (2), the water mixing valve (9) and the pressure pump (14) are matched with each other, so that the unit can be used in an area where the operation pressure of the second network is far lower than that of the first network.

7. The novel high-temperature water direct-connected water mixing unit according to claim 1, characterized in that: The pressure reducing valve (2), the power-off reset function electric valve (1) and the electric pressure relief valve (7) are matched with each other, so as to ensure the safe and stable operation of the whole system.

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