Cigarette factory air conditioner hot water heating pipeline system

Abstract

The utility model discloses a cigarette factory air conditioner hot water heating pipeline system which conveys steam to a heat exchange unit through a steam supply pipeline, heats low-temperature water which is conveyed into the heat exchange unit through a water pump after heat exchange to 85 DEG C and then conveys the water into an air conditioner through a water supply main pipe to heat air. Condensate water generated by steam is collected to a condensate water discharge pipe of the steam pipeline in a centralized mode through a drain valve set arranged at the tail end of the steam supply pipeline, hot water with the temperature not reaching 85 DEG C after heat exchange is conveyed to the front end of the water pump through a main water return pipe, and the main water return pipe is further provided with an expansion tank and a filtering tank which are used for maintaining water pressure balance of the pipeline. According to the system, the multiple air conditioners are communicated in the mode that the hot water circulating pipes are installed, heating is conducted through hot water, and the purposes that pipeline arrangement is simple, the heat exchange efficiency is high, and condensate water is convenient to recycle are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of central air conditioning, in particular to an air conditioning hot water heating pipeline system for a cigarette factory. Background Art

[0002] The central air conditioning in the cigarette factory provides a constant temperature and humidity for the cigarette production environment. The central air conditioning is distributed in the rolling and packaging workshop and the silk-making workshop. The air conditioning units are scattered and there are many of them. Usually, steam is used directly to heat the air through a heat exchanger. This method requires the installation of a steam trap group on each air conditioning unit, and the condensed water generated by each air conditioning unit is recycled separately. However, due to the scattered layout and large number of air conditioning units, the steam and condensed water pipeline system is complicated. In order to improve the heating efficiency and reduce the pipeline layout, a pipeline system with fewer pipeline layouts and higher efficiency is required for air conditioning heating. Condensed water recycling. Summary of the invention

[0003] In order to improve the heating efficiency and reduce the pipeline layout, the utility model has developed an air-conditioning hot water heating pipeline system for a cigarette factory, and centrally built heat exchange units. The circulating desalted water is first heated to 85°C using steam, and then the 85°C hot water is sent to the air-conditioning unit to heat the air. The hot water after heat exchange is returned to the heat exchange unit for circulating heating. The steam condensate of the device is only generated at the end of the steam pipeline and after the heat exchanger, which is convenient for centralized recycling.

[0004] The specific technical solutions are as follows:

[0005] A hot water heating pipeline system for air conditioners in a cigarette factory, the system comprising a heat exchange unit, a hot water circulation pipe for connecting a plurality of air conditioners and heat exchangers, and a water pump for providing power; the hot water circulation pipe comprises a steam supply pipe, a condensed water discharge pipe, a water supply main pipe and a return water main pipe;

[0006] The steam supply pipe is connected to the heat exchanger unit, and the steam is transported to the heat exchanger through the steam supply pipe to heat the circulating water entering the heat exchanger. The circulating water is pumped into the heat exchanger through the water pump unit installed at the end of the return water main pipe;

[0007] One end of the water supply main pipe is connected to the water outlet of the heat exchanger, and is connected to multiple air conditioners to provide hot water required for heating the air conditioners. The hot water outlet of the water supply main pipe is connected to the return water main pipe, and the end of the return water main pipe is connected to the water pump inlet pipeline;

[0008] The condensate discharge pipe includes a steam pipeline condensate discharge pipe connected to the end of the steam supply pipe and a heat exchanger condensate discharge pipe on the heat exchanger;

[0009] The steam pipe condensate discharge pipe is equipped with a steam trap group for discharging condensate inside the steam pipe; the heat exchanger condensate discharge pipe is provided with a pressure gauge for observing the pressure of the condensate main pipe;

[0010] The device is also provided with a controller, which is used to regulate the opening and closing of valves on the steam supply pipe and the water supply main pipe.

[0011] Furthermore, a pressure gauge, a stop valve and a pneumatic ball valve are installed on the steam supply pipe;

[0012] Furthermore, the steam trap group consists of 2 manual ball valves, 1 steam trap and 1 check valve.

[0013] Furthermore, a filter for filtering impurities in circulating hot water is arranged on the return water main pipe, a sewage pipe is arranged at the bottom of the filter, a manual ball valve is installed on the sewage pipe for sewage discharge, a manual ball valve and an air exhaust valve are arranged on the top of the filter for exhausting air in the pipe, a manual butterfly valve is installed on the inlet and outlet pipes of the filter respectively, a bypass is installed in the filter water circuit and a manual butterfly valve is arranged, which is used to close the manual inlet and outlet butterfly valves of the filter when the filter fails, and open the bypass butterfly valve to ensure the normal operation of the system.

[0014] Furthermore, the return water main pipe is also provided with an expansion tank for maintaining water circuit pressure balance.

[0015] Furthermore, the water pump unit is composed of three water pumps, a manual butterfly valve is installed in front of each water pump, a check valve and a manual butterfly valve are installed behind the water pump, and a pressure gauge and a pressure sensor are respectively set in the pipelines before and after the water pump.

[0016] Furthermore, a water supply pipeline is provided at the water pump inlet pipeline, and the supply water source is desalted water at room temperature. A manual butterfly valve and a pneumatic butterfly valve are provided on the water supply pipeline. When the water volume in the pipeline decreases due to continuous circulation, the pneumatic butterfly valve automatically opens to supply water.

[0017] Furthermore, a manual butterfly valve is installed on the pipeline at the front end of the water inlet of the heat exchanger, a temperature sensor is installed at the water outlet, and a pneumatic valve group is installed on the pipeline of the water outlet.

[0018] Furthermore, the pneumatic valve group consists of a pneumatic butterfly valve, a manual butterfly valve and a bypass manual ball valve.

[0019] Furthermore, the water supply main is provided with a safety valve to prevent overpressure of the pipeline water pressure, and a thermometer and a temperature sensor are also installed on the water supply main.

[0020] The working principle of this utility model is introduced as follows:

[0021] A hot water heating pipeline system for a cigarette factory is centrally configured with a heat exchange unit 1. During the first operation, the normal temperature circulating demineralized water is heated to 85°C by steam and then supplied to the air conditioner 2 for heating the air. After reaching the return water pipeline 6, the temperature is reduced to 65°C. The circulating water reduced to 65°C is sent to the heat exchange unit 1 through the water inlet of the heat exchanger by a water pump. The circulating water is heated from 65°C to 85°C by steam and then sent to the air conditioner 2 for heating the air through a water supply main pipe 5. The hot water after heat exchange is then sent to the heat exchange unit 1 through the return water main 6 through a water pump unit 7. After being heated again by steam from a steam supply pipe 3, it is sent to the air conditioner 2 through the water supply main pipe 5 again for heating the air to realize circulation. The condensed water generated by the steam is collected in a centralized manner to a steam pipeline condensed water discharge pipe 41 through a steam trap group 31 provided at the end of the steam supply pipe 3, thereby forming an air conditioning hot water heating pipeline, avoiding the air conditioner 2 from directly using steam for heating and recycling the condensed water generated by it separately, thereby improving the heating efficiency and reducing the pipeline layout.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] (1) The steam condensate of the device is only generated at the end of the steam pipeline and after the heat exchanger, which is convenient for centralized recycling;

[0024] (2) The number of pipelines is small and the heating efficiency is improved;

[0025] (3) The design of the expansion tube maintains the pressure balance of the return pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a diagram of the hot water heating pipeline system of the utility model;

[0027] In the figure, 1-heat exchange unit; 2-air conditioner; 3-steam supply pipe; 31-trap group; 4-condensate discharge pipe; 41-steam pipe condensate discharge pipe; 42-heat exchanger condensate discharge pipe; 5-water supply main pipe; 6-return water main pipe; 7-water pump unit; 8-controller; 9-expansion tank; 10-filter. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0029] Embodiment: A hot water heating pipeline system for air conditioners in a cigarette factory uses steam to heat circulating water through heat exchange, and the hot water is sent to the heating section of air conditioner 2 to heat the air. In order to improve the heating efficiency and reduce the layout of the pipeline, the utility model centrally constructs heat exchanger unit 1, first uses steam to heat the 65°C circulating desalted water to 85°C, and then sends the 85°C hot water to air conditioner 2 to heat the air. The hot water after heat exchange returns to the heat exchanger unit 1 to circulate and heat the air conditioner 2 to provide a constant temperature, as follows:

[0030] The hot water piping system of the device is provided with a heat exchange unit 1, a steam supply pipe 3, a condensate discharge pipe 4, a water supply main pipe 5, a return water main pipe 6, a water pump unit 7, a water supply pipeline 8, an expansion tank 9, a filter 10, and pressure gauges, pressure sensors, stop valves, manual butterfly valves, check valves, pneumatic butterfly valves, thermometers, temperature sensors, manual ball valves, pneumatic ball valves, electric regulating valves, a steam trap group 31, a safety valve, and a heat meter installed on each pipeline.

[0031] The air inlet end of the heat exchange unit 1 is connected to the steam supply pipe 3, the water inlet end is connected to the return water pipe 6 of the water pump outlet, and the water outlet end is connected to the water supply main pipe 5 of the heating air conditioner; the steam is transported to the heat exchange unit 1 through the steam supply pipe 3, and a pressure gauge, a stop valve and a pneumatic ball valve are installed on the steam supply pipe 3. A steam trap group 31 is installed at the end of the steam supply pipe 3 for discharging condensed water inside the steam pipe. The steam trap group 31 consists of 2 manual ball valves, 1 steam trap and 1 check valve; the steam enters the heat exchanger to heat the circulating hot water at 65°C and then is discharged into the heat exchanger condensate discharge pipe 42, and a temperature sensor, an electric regulating valve and a stop valve are installed on the heat exchanger condensate discharge pipe 42; the electric regulating valve is provided with a reducer and reducer for pipeline conversion before and after, and the steam inlet amount is controlled by the opening of the electric regulating valve on the controller line to ensure that the outlet temperature of the heat exchanger circulating water is constant at 85°C, and a pressure gauge is provided on the condensate main pipe to observe the pressure of the condensate main pipe.

[0032] The circulating hot water for the air conditioner is supplied by a water supply main 5, and the outlet of the water supply main 5 is connected to a return water main 6. A filter 10 for filtering impurities in the circulating hot water is arranged on the return water main 6. The impurities in the circulating hot water are filtered by the filter 10. A sewage pipeline is arranged at the bottom of the filter 10, and a manual ball valve for sewage discharge is installed on the sewage pipeline. A manual ball valve and an air exhaust valve for discharging air in the pipeline are also arranged on the top of the filter 10; and a manual butterfly valve is installed on each of the inlet and outlet water pipelines of the filter 10. A bypass is also installed on the inlet and outlet water pipelines of the filter 10, and a manual butterfly valve is arranged on the bypass. When the filter 10 fails, the manual inlet and outlet water butterfly valves of the filter 10 are closed, and the bypass butterfly valve is opened to ensure the normal operation of the system.

[0033] An expansion tank 9 is arranged on the return water main pipe 6. When the water loss pressure decreases, the gas pressure in the expansion tank 9 is greater than the water pressure. At this time, the gas expands and squeezes the water in the air bag of the expansion tank 9 to replenish the system to maintain a constant water pressure.

[0034] The circulating water treated by the filter 10 is connected to the water pump unit 7. The water pump unit 7 consists of 3 water pumps. A manual butterfly valve is installed in front of each water pump, and a check valve and a manual butterfly valve are installed behind the water pump. A pressure gauge and a pressure sensor are respectively set in the pipelines before and after the water pump. The pressure sensor at the outlet of the water pump transmits the pressure value to the water pump, and the outlet pressure is maintained constant by changing the speed of the water pump. A water supply pipeline 8 is also set in the inlet pipeline of the water pump. The water source of the water supply pipeline is demineralized water at room temperature. A manual butterfly valve and a pneumatic butterfly valve are set on the water supply pipeline 8. When the water volume of the pipeline is reduced due to continuous circulation, the pneumatic butterfly valve is opened for automatic water supply. The water supply pipeline is only activated when the water in the circulating pipeline is reduced.

[0035] The circulating water temperature at the outlet of the water pump is 65°C. A manual butterfly valve is installed before entering the heat exchanger. The circulating water at 65°C is heated to 85°C by steam after entering the heat exchanger. A temperature sensor is installed at the outlet of the circulating water heat exchanger. A pneumatic valve group is installed on the outlet pipeline. The pneumatic valve group consists of a pneumatic butterfly valve, a manual butterfly valve and a bypass manual ball valve. A safety valve is installed on the water supply main 5 to prevent overpressure of the pipeline water pressure. A thermometer and a temperature sensor are installed on the water supply main 5. The water supply main 5 is responsible for providing the air conditioner 2 with hot water required for heating.

[0036] A heat meter is installed at the outlet of the filter 10. The heat meter has a flow meter. By detecting the circulating water flow rate and the water temperature before and after the heat exchanger, the actual heating amount of the circulating water by the heat exchanger can be automatically calculated.

[0037] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A hot water heating pipeline system for air conditioning in a cigarette factory, the system comprising a heat exchange unit (1), characterized in that: The system also includes a hot water circulation pipe for connecting a plurality of air conditioners (2) and heat exchangers, and a water pump for providing power; the hot water circulation pipe includes a steam supply pipe (3), a condensed water discharge pipe (4), a water supply main pipe (5) and a return water main pipe (6); The steam supply pipe (3) is connected to the heat exchanger unit (1), and steam is transported to the heat exchanger through the steam supply pipe (3) to heat the circulating water entering the heat exchanger, and the circulating water is pumped into the heat exchanger via a water pump installed at the end of the return water main pipe (6); One end of the water supply main pipe (5) is connected to the water outlet of the heat exchanger and is connected to a plurality of air conditioners (2) to provide hot water required for heating the air conditioners (2). The hot water outlet of the water supply main pipe (5) is connected to the return water main pipe (6). The end of the return water main pipe (6) is connected to the inlet pipeline of the water pump unit (7). The condensate discharge pipe (4) comprises a steam pipeline condensate discharge pipe (41) connected to the end of the steam supply pipe (3) and a heat exchanger condensate discharge pipe (42) on the heat exchanger; The steam pipeline condensate discharge pipe (41) is equipped with a steam trap group (31) for discharging condensate inside the steam pipeline; the heat exchanger condensate discharge pipe (42) is provided with a pressure gauge for observing the pressure of the condensate main pipe; The system is also provided with a controller, which is used to regulate the opening and closing of valves on the steam supply pipe (3) and the water supply main pipe (5).

2. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 1, characterized in that: The steam supply pipe (3) is equipped with a pressure gauge, a stop valve and a pneumatic ball valve.

3. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 1, characterized in that: The steam trap group (31) is composed of two manual ball valves, one steam trap and one check valve.

4. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 1, characterized in that: The return water main pipe (6) is provided with a filter (10) for filtering impurities in the circulating hot water, a sewage discharge pipeline is provided at the bottom of the filter (10), a manual ball valve is installed on the sewage discharge pipeline for sewage discharge, a manual ball valve and an air exhaust valve are provided at the top of the filter (10) for exhausting air in the pipeline, a manual butterfly valve is installed on each of the inlet and outlet pipes of the filter (10), a bypass is installed in the water channel of the filter (10) and a manual butterfly valve is provided, which is used to close the inlet and outlet manual butterfly valves of the filter (10) when the filter (10) fails and open the bypass butterfly valve to ensure the normal operation of the system.

5. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 1, characterized in that: The return water main pipe (6) is also provided with an expansion tank (9) for maintaining the pressure balance of the water channel.

6. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 1, characterized in that: The water pump unit (7) is composed of three water pumps. A manual butterfly valve is installed in front of each water pump, a check valve and a manual butterfly valve are installed behind the water pump, and a pressure gauge and a pressure sensor are respectively provided in the pipelines before and after the water pump.

7. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 6, characterized in that: The water pump inlet pipeline is provided with a water supply pipeline (8), the water supply source is demineralized water at room temperature, and a manual butterfly valve and a pneumatic butterfly valve are provided on the water supply pipeline (8). When the water volume in the pipeline decreases due to continuous circulation, the pneumatic butterfly valve automatically opens to supply water.

8. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 1, characterized in that: A manual butterfly valve is installed on the pipeline at the front end of the water inlet of the heat exchange unit (1), a temperature sensor is installed on the water outlet, and a pneumatic valve group is installed on the pipeline of the water outlet.

9. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 8, characterized in that: The pneumatic valve group consists of a pneumatic butterfly valve, a manual butterfly valve and a bypass manual ball valve.

10. The air conditioning hot water heating pipeline system for a cigarette factory according to claim 1, characterized in that: The water supply main pipe (5) is provided with a safety valve to prevent the water pressure in the pipeline from over-pressure, and a thermometer and a temperature sensor are also installed on the water supply main pipe (5).

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