Heating water replenishing process system

Abstract

The utility model belongs to the technical field of heat exchange, and particularly relates to a heating water replenishing process system which comprises a condensed water delivery line, a heating water circulation line, a tap water replenishing line and a heat exchanger set. The condensed water delivery line and the heating water circulation line are connected to the heat exchanger set, heat is supplied to the heating water circulation line through the condensed water delivery line, a crossing pipeline is arranged between a heat exchanger set outlet of the condensed water delivery line and a heat exchanger set inlet of the heating water circulation line, and a resin tank softened water system is connected to the tap water supplementing line. An outlet of the tap water supplementing line is connected to an inlet of the heat exchanger set of the heating water circulation line. Direct water supply is achieved through the pressure difference between the condensation water line and the inlet of the heating water circulating pump and the regulating valve, a make-up pump is omitted, condensation water is high-quality softened water, the quality of heating water is optimized, consumption of chemicals needed by early-stage processing equipment such as a tap water softening resin tank and a softening tank is omitted, and energy consumption is reduced. The purposes of energy conservation, environmental protection, time saving and labor saving are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchange, and in particular relates to a heating water replenishment process system. Background Art

[0002] The circulating water of the heating system of a chemical plant usually uses tap water, which is softened by a resin tank and then added to the water tank. It is then injected into the heating water network by a pressure pump, pressurized by the heating water circulation pump, circulated in the heating water system, and released through the radiator to heat each room of each unit. Tap water used as heating water needs to be softened as a preliminary treatment to improve water quality. The softening process consumes huge resources, resulting in great pressure on heating supply. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the purpose of the utility model is to provide a heating water replenishment process system, which utilizes the existing condensate water pipeline to provide a water supply system with better water quality and practicality, and adds a branch line to the external condensate line (pressure 0.5Mpa) to introduce it into the inlet of the heating water circulation pump (pressure 0.3Mpa), which can not only optimize the water quality of the heating water, but also save the pre-treatment equipment such as the tap water softening resin tank, and the consumption of the chemical that must be added to the softening tank, so as to achieve the purposes of energy saving, environmental protection, time saving and labor saving.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is a heating water make-up process system, including an external condensate water line, a heating water circulation line, a tap water make-up line and a heat exchanger group; the external condensate water line and the heating water circulation line are respectively connected to the heat exchanger group, and the heating water circulation line is heated by the external condensate water line, a crossing pipeline is arranged between the outlet of the heat exchanger group of the external condensate water line and the inlet of the heat exchanger group of the heating water circulation line, the tap water make-up line is connected to a resin tank softening water system, and the outlet of the tap water make-up line is connected to the inlet of the heat exchanger group of the heating water circulation line.

[0005] Furthermore, the heat exchanger group includes a tube bundle heat exchanger and a plate heat exchanger arranged in series, the external condensate water line is sequentially connected to the tube bundle heat exchanger and the plate heat exchanger, and the heating water circulation line is sequentially connected to the plate heat exchanger and the tube bundle heat exchanger.

[0006] Furthermore, the crossing pipeline is sequentially provided with a front manual valve of the regulating valve, a regulating valve and a rear manual valve of the regulating valve.

[0007] Furthermore, the external condensate line includes a condensate inlet pipeline and a condensate outlet pipeline, the condensate inlet pipeline is connected to the inlet of the heat exchanger group, the condensate outlet pipeline is connected to the outlet of the heat exchanger group, and valves are respectively provided on the condensate inlet pipeline and the condensate outlet pipeline.

[0008] Furthermore, the inlet of the crossover pipeline is connected to the condensate outlet pipeline.

[0009] Furthermore, the heating water circulation line includes a heating water supply pipeline and a heating water return pipeline. The heating water supply pipeline is connected from the outlet of the heat exchanger group to the inlet of the heating water user network, and the heating water return pipeline is connected from the outlet of the heating water user network to the inlet of the heat exchanger group.

[0010] Furthermore, the heating water return pipeline is provided with a circulating pump inlet filter, a heating water circulating pump and a heating water return pressure gauge; and valves are respectively provided on the heating water supply pipeline and the heating water return pipeline.

[0011] Furthermore, the outlet of the crossover pipeline is connected to the inlet of the circulation pump inlet filter.

[0012] Furthermore, the softened water outlet pipeline of the resin tank softened water system outlet is connected to the softened water tank, the softened water tank outlet is connected to the heating water make-up pump through the make-up pump inlet pipeline, and the make-up pump outlet pipeline is connected to the heating water return pipeline.

[0013] Furthermore, the water supply pump outlet pipeline is connected between the circulation pump inlet filter and the heating water circulation pump.

[0014] The externally delivered condensed water flows into the tube bundle heat exchanger through the condensed water inlet pipeline, exchanges heat with the heating water, and then flows into the plate heat exchanger for further heat exchange with the heating water before being normally delivered.

[0015] The heating water is made from original tap water, which is softened by a resin tank softening water system and then enters a softened water tank. The heating water make-up pump injects the water into the heating water circulation pipeline. After the heating water circulation water is pressurized, it first enters a plate heat exchanger to exchange heat with condensed water. After the temperature is increased, it enters a tube bundle heat exchanger to further extract heat, and then is delivered to each user for heating. The heated water is combined together and passes through a circulating pump inlet filter before entering a heating water circulation pump to increase pressure and enter the heating water pipeline for circulation.

[0016] The beneficial effects of the utility model are as follows: the utility model realizes direct water supply through the regulating valve via the pressure difference between the condensate water line and the inlet of the heating water circulation pump, which first saves the operating cost of the water supply pump. In addition, because the condensate water itself is high-quality softened water, the water quality of the heating water is further optimized, and the consumption of chemical agents required for the pre-treatment equipment such as the tap water softening resin tank and the softening tank is saved, thereby achieving the purposes of energy saving, environmental protection, time saving and labor saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the process flow chart of the heating water make-up system;

[0018] In the figure: 1. Condensate inlet pipeline, 2. Tube bundle heat exchanger inlet valve, 3. Tube bundle heat exchanger, 4. Heat exchanger outlet pipeline, 5. Plate heat exchanger, 6. Plate heat exchanger outlet valve, 7. Condensate outlet pipeline, 8. Tap water line, 9. Resin tank softened water system, 10. Softened water outlet pipeline, 11 Softened water tank, 12. Make-up water pump inlet pipeline, 13. Heating water make-up pump, 14 Make-up water pump outlet pipeline, 15. Circulation Pump inlet filter, 16. Heating water return pressure gauge, 17. Heating water circulation pump, 18. Pump outlet valve, 19. Plate heat exchanger outlet pipeline, 20. Tube bundle heat exchanger outlet valve, 21. Heating water supply pipeline, 22. Heating water user pipeline, 23. Heating water return pipeline, 24. Heating water circulation pump inlet valve, 25. Crossing pipeline, 26. Manual valve before regulating valve, 27. Regulating valve, 28. Manual valve after regulating valve. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0020] See attached Figure 1 , a heating water replenishment process system, comprising an external condensate water line, a heating water circulation line, a tap water replenishment line and a heat exchanger group, the heat exchanger group comprising a tube bundle heat exchanger 3 and a plate heat exchanger 5 arranged in series; the external condensate water line and the heating water circulation line are respectively connected to the heat exchanger group, the external condensate water line is connected to the tube bundle heat exchanger 3 and the plate heat exchanger 5 in sequence, the heating water circulation line is connected to the plate heat exchanger 5 and the tube bundle heat exchanger 3 in sequence, the external condensate water line is used to supply heat to the heating water circulation line, a crossing pipeline 25 is arranged between the outlet of the heat exchanger group of the external condensate water line and the inlet of the heat exchanger group of the heating water circulation line, the crossing pipeline 25 is sequentially provided with a regulating valve front hand valve 26, a regulating valve 27 and a regulating valve rear hand valve 28, the tap water replenishment line is connected to a resin tank softening water system 9, and the outlet of the tap water replenishment line is connected to the inlet of the heat exchanger group of the heating water circulation line.

[0021] In this embodiment, the external condensate line includes a condensate inlet pipeline and a condensate outlet pipeline. The condensate inlet pipeline 1 is connected to the condensate inlet of the tube bundle heat exchanger 3 through the tube bundle heat exchanger inlet valve 2. After heat exchange, the condensate outlet of the tube bundle heat exchanger 3 is connected to the condensate inlet of the plate heat exchanger 5 through the heat exchanger outlet pipeline 4. The condensate outlet of the plate heat exchanger 5 is sent to the condensate line outlet device through the condensate outlet pipeline 7 and the plate heat exchanger outlet valve 6. The inlet of the crossing pipeline is connected to the front of the plate heat exchanger outlet valve 6 of the condensate outlet pipeline 7.

[0022] In this embodiment, the heating water circulation line includes a heating water supply pipeline 21 and a heating water return pipeline 23. The heating water supply pipeline 21 is connected from the circulating water outlet of the tube bundle heat exchanger 3 to the inlet of the heating water user pipeline 22 via the tube bundle heat exchanger outlet valve 20. The outlet of the heating water user pipeline 22 is connected to the heating water circulation pump inlet valve 24, the heating water return pressure gauge 16, the circulation pump inlet filter 15, the heating water circulation pump 17 and the pump outlet valve 18 in sequence via the heating water return pipeline 23. The outlet of the heating water return pipeline 23 is connected to the circulating water inlet of the plate heat exchanger 5. The circulating water outlet of the plate heat exchanger 5 is connected to the circulating water inlet of the tube bundle heat exchanger 3 through the plate heat exchanger outlet pipeline 19. The outlet of the crossing pipeline 25 is connected to the inlet of the circulating pump inlet filter 15.

[0023] In this embodiment, the tap water make-up line enters the resin tank softened water system 9 through the tap water line 8 for softening, and the softened water outlet pipeline 10 connected to the outlet of the resin tank softened water system 9 is connected to the softened water tank 11. The outlet of the softened water tank 11 is connected to the heating water make-up pump 13 through the make-up pump inlet pipeline 12, and the make-up pump outlet pipeline 14 is connected between the circulating pump inlet filter 15 and the heating water circulating pump 17 in the heating water return pipeline 23.

[0024] The heating water circulation line includes an original tap water pipeline 8, a resin tank softening water system 9 (automatic softener), and then the tap water is softened and sent to a softened water tank 11 through a softened water outlet pipeline 10. The softened water in the water tank passes through a water supply pump inlet pipeline 12 and a heating water supply pump 13 to increase the pressure before entering the inlet of a heating water circulation pump 17. After being increased in pressure by the heating water circulation pump 17, the water enters the plate heat exchanger 5 through an outlet pipeline and a pump outlet valve 18 to take heat. After being heated, it enters the tube bundle heat exchanger 3 through the plate heat exchanger outlet pipeline 19 to further extract heat from the condensate. After extracting heat, it passes through the outlet pipeline and the tube bundle heat exchanger outlet valve 20 to the heating water supply pipeline 21 and is sent to each heating user network 22. The heating water after heating is combined and enters the heating water return pipeline 23, and is pressurized after passing through the heating water circulation pump inlet valve 24, the circulation pump inlet filter 15, and the heating water circulation pump 17 and then sent to the heating water network for recycling.

[0025] The utility model introduces a jump line on the external condensate water, and a regulating valve 27 and front and rear manual valves 26 and 28 are newly added on the jump line for control. When the pressure gauge 16 on the circulating heating water return pipeline shows low pressure, the central control operator can remotely open the regulating valve 27, and replenish the heating water return pipeline with water by externally sent high-pressure condensate water until the return water pressure gauge 16 reaches the requirement, and then close the regulating valve 27. The central control operator can also turn on the regulating valve 27 automatically and set the regulating valve switch pressure.

[0026] The present invention does not disclose some common knowledge in the art.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A heating water replenishment process system, characterized in that: It includes an external condensate water line, a heating water circulation line, a tap water replenishment line and a heat exchanger group; the external condensate water line and the heating water circulation line are respectively connected to the heat exchanger group, and the heating water circulation line is heated by the external condensate water line. A crossing pipeline is arranged between the outlet of the heat exchanger group of the external condensate water line and the inlet of the heat exchanger group of the heating water circulation line. The tap water replenishment line is connected to a resin tank softening water system, and the outlet of the tap water replenishment line is connected to the inlet of the heat exchanger group of the heating water circulation line.

2. A heating water replenishment process system according to claim 1, characterized in that: The heat exchanger group includes a tube bundle heat exchanger and a plate heat exchanger arranged in series, the external condensate water line is sequentially connected to the tube bundle heat exchanger and the plate heat exchanger, and the heating water circulation line is sequentially connected to the plate heat exchanger and the tube bundle heat exchanger.

3. A heating water replenishment process system according to claim 1, characterized in that: The crossing pipeline is provided with a regulating valve front hand valve, a regulating valve and a regulating valve rear hand valve in sequence.

4. A heating water replenishment process system according to claim 1, characterized in that: The external condensate line includes a condensate inlet pipeline and a condensate outlet pipeline. The condensate inlet pipeline is connected to the inlet of the heat exchanger group, and the condensate outlet pipeline is connected to the outlet of the heat exchanger group. Valves are respectively provided on the condensate inlet pipeline and the condensate outlet pipeline.

5. A heating water replenishment process system according to claim 4, characterized in that: The inlet of the crossing pipeline is connected to the condensate outlet pipeline.

6. A heating water replenishment process system according to claim 1, characterized in that: The heating water circulation line includes a heating water supply pipeline and a heating water return pipeline. The heating water supply pipeline is connected from the outlet of the heat exchanger group to the inlet of the heating water user network, and the heating water return pipeline is connected from the outlet of the heating water user network to the inlet of the heat exchanger group.

7. A heating water replenishment process system according to claim 6, characterized in that: The heating water return pipeline is provided with a circulating pump inlet filter, a heating water circulating pump and a heating water return pressure gauge; the heating water supply pipeline and the heating water return pipeline are respectively provided with valves.

8. A heating water replenishment process system according to claim 7, characterized in that: The outlet of the crossover pipeline is connected to the inlet of the circulation pump inlet filter.

9. A heating water replenishment process system according to claim 7, characterized in that: The softened water outlet pipeline of the resin tank softened water system outlet is connected to the softened water tank, the softened water tank outlet is connected to the heating water make-up pump through the make-up pump inlet pipeline, and the make-up pump outlet pipeline is connected to the heating water return pipeline.

10. A heating water replenishment process system according to claim 9, characterized in that: The outlet pipeline of the water supply pump is connected between the inlet filter of the circulation pump and the heating water circulation pump.

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