Heat supply network desuperheating water pressurization system

Abstract

The utility model provides a heating network desuperheating water pressurization system. The heat supply network desuperheating water pressurization system comprises a drain tank, a booster pump, a heat supply network pipeline and a straight pipe section, a water inlet of the booster pump is communicated with a communicating pipe, the other end of the communicating pipe is communicated with the bottom of an inner cavity of the drain tank, and a water outlet of the booster pump is communicated with a water inlet of the heat supply network pipeline. A desuperheating water regulating valve is arranged on the heat network pipeline, and a venturi injection mixing device is arranged on the straight pipe section. According to the desuperheating water pressurization system for the heat supply network, a path of water source is led to serve as desuperheating water through independent pressurization of the drain tank, the water supply differential pressure is small, and the heat supply temperature can be accurately controlled and the requirement for the heat supply temperature of a user side can be well met through injection and mixed desuperheating of the venturi; pressure stability of desuperheating water in the conveying process can be guaranteed through pressurization, unstable water flow caused by pressure fluctuation is reduced, and stable operation of a heat supply network is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of boosting systems, in particular to a heating network desuperheating water boosting system. Background Art

[0002] The heat network is a pipeline system used to transport and distribute heat-carrying media (steam or hot water) under centralized heating conditions. It transports heat energy to heat users through pipelines and heat carriers (working media, usually water or water vapor). The heat network system is generally composed of three parts: heat source, heat network and heat users. It is an infrastructure for urban energy construction.

[0003] In the prior art, the cooling water of the heating network originally used high-pressure cooling water. During use, the temperature control was difficult due to the excessive differential pressure of the water supply, and the heating temperature could not be accurately controlled, thereby failing to meet the user's heating temperature requirements, which was not conducive to work use.

[0004] Therefore, it is necessary to provide a heat network desuperheating water pressurization system to solve the above technical problems. Utility Model Content

[0005] The utility model provides a heating network desuperheating water pressurizing system, which solves the problem in the prior art that the heating network desuperheating water originally uses high-pressure desuperheating water, which makes temperature control difficult due to excessive water supply differential pressure during use, and the heating temperature cannot be accurately controlled.

[0006] In order to solve the above technical problems, the utility model provides a heating network desuperheating water boosting system, comprising a drain tank, a booster pump, a heating network pipeline and a straight pipe section, wherein the water inlet of the booster pump is connected with a connecting pipe, the other end of the connecting pipe is connected with the bottom of the inner cavity of the drain tank, and the water outlet of the booster pump is connected with the water inlet of the heating network pipeline;

[0007] The heating network pipeline is provided with a cooling water regulating valve, the straight pipe section is provided with a venturi ejector mixing device, the water outlet of the heating network pipeline is connected with the venturi ejector mixing device, and the water outlet end of the straight pipe section is provided with a heating network thermometer.

[0008] Preferably, a boost inlet valve is provided at the water inlet of the boost pump, and a boost outlet valve is provided at the water outlet of the boost pump.

[0009] Preferably, return pipes are provided at both ends of the straight pipe section.

[0010] Preferably, the heat network pipeline is provided with an adjusting inlet valve and an adjusting outlet valve.

[0011] Preferably, the water outlet end of the booster pump is connected to a return pipe, the other end of the return pipe is connected to the top of the inner cavity of the drain tank, and a return control valve is provided on the return pipe.

[0012] Preferably, it also includes an electric control component, which is electrically connected to the heating network thermometer and the cooling water regulating valve.

[0013] Compared with the related art, the heating network desuperheating water pressurization system provided by the utility model has the following beneficial effects:

[0014] The utility model provides a cooling water boosting system for a heating network. By independently boosting the pressure of a water source from a drain tank as cooling water, the water supply differential pressure is small, and the venturi injection mixing cooling is arranged, so the heating temperature can be accurately controlled to better meet the heating temperature requirement on the user side. The pressure of the cooling water can be ensured to be stable during the transportation process by boosting the pressure, and the instability of the water flow caused by the pressure fluctuation is reduced, which is helpful for the smooth operation of the heating network. The boosted cooling water can better meet the regulation requirements of the heating network under different working conditions. When the heating load changes, the flow rate and pressure of the cooling water can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic structural diagram of a preferred embodiment of the heating network desuperheating water pressurization system provided by the present invention.

[0016] Numbers in the figure: 1. Drain tank; 2. Connecting pipe; 3. Booster pump; 4. Booster inlet valve; 5. Booster outlet valve; 6. Heating network pipeline; 7. Desuperheating water regulating valve; 8. Regulating inlet valve; 9. Regulating outlet valve; 10. Pressure gauge; 11. Straight pipe section; 12. Venturi ejector mixing device; 13. Heating network thermometer; 14. Return pipe; 15. Return control valve; 16. Electronic control component. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0018] Please refer to Figure 1 ,in, Figure 1 The schematic diagram of the structure of a preferred embodiment of the heating network desuperheating water boosting system provided by the utility model. The heating network desuperheating water boosting system comprises a drain tank 1, a booster pump 3, a heating network pipeline 6 and a straight pipe section 11, the water inlet of the booster pump 3 is connected with a connecting pipe 2, the other end of the connecting pipe 2 is connected with the bottom of the inner cavity of the drain tank 1, and the water outlet of the booster pump 3 is connected with the water inlet of the heating network pipeline 6.

[0019] A cooling water regulating valve 7 is provided on the heating network pipeline 6, a venturi ejector mixing device 12 is provided on the straight pipe section 11, the water outlet of the heating network pipeline 6 is connected to the venturi ejector mixing device 12, and a heating network thermometer 13 is provided at the water outlet end of the straight pipe section 11.

[0020] A separate water source is introduced from the drain tank 1 as cooling water. The water pump is designed with a rated pressure of 1.3 MPa and a rated flow of 5 m 3 / h, the pressure output is much lower than that of the high-pressure water supply mother pipe, the water supply differential pressure is small, and the Venturi injection mixing and cooling is set to accurately control the heating temperature and better meet the heating temperature requirements on the user side.

[0021] The water inlet of the booster pump 3 is provided with a booster inlet valve 4, the water outlet of the booster pump 3 is provided with a booster outlet valve 5, the water outlet end of the booster pump 3 is connected with a return pipe 14, the other end of the return pipe 14 is connected with the top of the inner cavity of the drain tank 1, the return pipe 14 is provided with a reflux control valve 15, the heat network pipeline 6 is provided with an adjusting inlet valve 8 and an adjusting outlet valve 9, and the water outlet of the booster pump 3 is provided with a pressure gauge 10.

[0022] During operation, it is necessary to check that the liquid level in the drain tank 1 is greater than 500mm. Before commissioning, it is necessary to inject water into the heating network cooling water booster pump 3. The water level in the pump body is higher than the water injection port. Open the boost inlet valve 4 and the boost outlet valve 5 on the heating network cooling water booster pump 3, close the reflux control valve 15, and then open the regulating inlet valve 8 and the regulating outlet valve 9. Check the power supply of the cooling water regulating valve 7, close the cooling water regulating valve 7, start the heating network cooling water booster pump 3, adjust the opening of the reflux control valve 15, and control the outlet pressure of the booster pump 3 between 1.3 and 1.5 MPa. The cooling water regulating valve 7 is automatically adjusted during use.

[0023] The water source of the booster pump 3 is taken from the drain tank 1, and the water temperature is about 50-60℃. The booster pump 3 is started to pressurize the normal pressure desuperheated water in the drain tank 1 and then transport it to the heat network pipeline 6. The rated pressure of the heat network pipeline 6 is 1.27 MPa, and the daily operation is 1-1. The pressure gauge is 10 MPa, and a pressure gauge 10 is installed on the outlet pipe of the booster pump 3 to control the outlet pressure at 1.30-1.50 MPa, so that the desuperheated water pressure is higher than the pressure of the heat network pipeline 6, and the outlet pressure of the booster pump 3 is adjusted by the opening of the reflux control valve 15.

[0024] It also includes an electric control component 16, which is electrically connected to the heating network thermometer 13 and the cooling water regulating valve 7. The heating network thermometer 13 is convenient for controlling the outlet water temperature.

[0025] The working principle of the heating network desuperheating water pressurization system provided by the utility model is as follows:

[0026] The water source of the booster pump 3 is taken from the drain tank 1, and the water temperature is about 50-60℃. The booster pump 3 is started to pressurize the normal pressure desuperheated water in the drain tank 1 and then transport it to the heat network pipeline 6. The rated pressure of the heat network pipeline 6 is 1.27 MPa, and the daily operation is 1-1. The pressure gauge is 10 MPa, and a pressure gauge 10 is installed on the outlet pipe of the booster pump 3 to control the outlet pressure at 1.30-1.50 MPa, so that the desuperheated water pressure is higher than the pressure of the heat network pipeline 6, and the outlet pressure of the booster pump 3 is adjusted by the opening of the reflux control valve 15.

[0027] Compared with the related art, the heat network desuperheating water boosting system provided by the utility model has the following beneficial effects: by independently boosting the pressure to lead a water source from the drain tank 1 as desuperheating water, the water supply differential pressure is small, and by the provided Venturi injection mixed desuperheating, the heating temperature can be accurately controlled to better meet the user side heating temperature requirements, and the pressure of the desuperheating water can be ensured to be stable during the transportation process by boosting the pressure, reducing the instability of the water flow caused by pressure fluctuations, which is conducive to the smooth operation of the heat network, and the boosted desuperheating water can better meet the regulation needs of the heat network under different working conditions, and when the heating load changes, the flow rate and pressure of the desuperheating water can be adjusted.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heating network desuperheating water boosting system, comprising a drain tank (1), a booster pump (3), a heating network pipeline (6) and a straight pipe section (11), characterized in that: The water inlet of the booster pump (3) is connected to a connecting pipe (2), the other end of the connecting pipe (2) is connected to the bottom of the inner cavity of the drain tank (1), and the water outlet of the booster pump (3) is connected to the water inlet of the heat network pipeline (6); The heating network pipeline (6) is provided with a cooling water regulating valve (7), the straight pipe section (11) is provided with a Venturi ejector mixing device (12), the water outlet of the heating network pipeline (6) is connected to the Venturi ejector mixing device (12), and the water outlet end of the straight pipe section (11) is provided with a heating network thermometer (13).

2. The heating network desuperheating water boosting system according to claim 1, characterized in that: The water inlet of the booster pump (3) is provided with a booster inlet valve (4), and the water outlet of the booster pump (3) is provided with a booster outlet valve (5).

3. The heating network desuperheating water pressurization system according to claim 1, characterized in that: Both ends of the straight pipe section (11) are provided with return pipes (14).

4. The heating network desuperheating water boosting system according to claim 1, characterized in that: The heat network pipeline (6) is provided with an adjustable inlet valve (8) and an adjustable outlet valve (9).

5. The heating network desuperheating water pressurization system according to claim 1, characterized in that: The water outlet end of the booster pump (3) is connected to a return pipe (14), the other end of the return pipe (14) is connected to the top of the inner cavity of the drain tank (1), and a return control valve (15) is provided on the return pipe (14).

6. The heating network desuperheating water pressurization system according to claim 1, characterized in that: It also includes an electric control component (16), and the electric control component (16) is electrically connected to the heating network thermometer (13) and the desuperheating water regulating valve (7).

Images