Raw water heating device

Abstract

The utility model provides a raw water heating device which comprises a hot water inlet header pipe, a hot water return header pipe, a raw water inlet header pipe, a raw water outlet header pipe, a first heat exchanger, a second heat exchanger and a raw water bypass pipe. A hot water inlet manual valve and a hot water inlet control valve set are sequentially arranged on the hot water inlet main pipe in the water flow direction. The hot water inlet header pipe is connected with one end of a first channel of the first heat exchanger through a hot water inlet first branch pipe and connected with one end of a first channel of the second heat exchanger through a hot water inlet second branch pipe. A first hot water inlet valve is arranged on the first hot water inlet branch pipe, and a second hot water inlet valve is arranged on the second hot water inlet branch pipe; the other end of the first heat exchanger first channel is connected with a hot water return main pipe through a hot water return first branch pipe. The other end of the second heat exchanger first channel is connected with the hot water return main pipe through a hot water return second branch pipe. According to the utility model, the temperature of raw water entering the desalting water production system is maintained at a higher temperature.

Description

Technical Field

[0001] This utility model relates to a heating device, and more particularly to a raw water heating device. Background Technology

[0002] The feedwater for waste heat boilers in thermal power plants comes from demineralized water. Raw water is the source of the demineralization water treatment system. In winter, when the air temperature is low, the temperature of the raw water (close to the temperature of river water) is also low. Under low water temperature conditions, the water production of the demineralization water treatment equipment is greatly reduced, which will lead to untimely feedwater replenishment to the waste heat boiler and affect the heat supply of the unit. Therefore, it is necessary to heat the raw water. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a raw water heating device that can increase the temperature of raw water in cold weather, thereby maintaining a higher temperature for the raw water entering the desalination and water purification system and increasing the output water of the desalination and water purification equipment. To achieve the above technical objectives, the technical solution adopted in this utility model embodiment is as follows:

[0004] This utility model embodiment provides a raw water heating device, including: a hot water inlet main pipe, a hot water return main pipe, a raw water inlet main pipe, a raw water outlet main pipe, a first heat exchanger, a second heat exchanger, and a raw water bypass pipe;

[0005] A hot water inlet manual valve and a hot water inlet control valve assembly are sequentially installed along the water flow direction on the hot water inlet main pipe. The hot water inlet main pipe is connected to one end of the first channel of the first heat exchanger via a first hot water inlet branch pipe and to one end of the first channel of the second heat exchanger via a second hot water inlet branch pipe. A first hot water inlet valve is installed on the first hot water inlet branch pipe, and a second hot water inlet valve is installed on the second hot water inlet branch pipe. The other end of the first channel of the first heat exchanger is connected to the hot water return main pipe via a first hot water return branch pipe, and the other end of the first channel of the second heat exchanger is connected to the hot water return main pipe via a second hot water return branch pipe. A first hot water return valve is installed on the first hot water return branch pipe, and a second hot water return valve is installed on the second hot water return branch pipe. A hot water return manual valve is installed on the hot water return main pipe.

[0006] A manual raw water inlet valve is installed on the main raw water inlet pipe. The main raw water inlet pipe is connected to one end of the second channel of the first heat exchanger via a first raw water inlet branch pipe and to one end of the second channel of the second heat exchanger via a second raw water inlet branch pipe. A first raw water inlet valve is installed on the first raw water inlet branch pipe, and a second raw water inlet valve is installed on the second raw water inlet branch pipe. The other end of the second channel of the first heat exchanger is connected to the main raw water outlet pipe via a first raw water outlet branch pipe, and the other end of the second channel of the second heat exchanger is connected to the main raw water outlet pipe via a second raw water outlet branch pipe. A first raw water outlet valve is installed on the first raw water outlet branch pipe, and a second raw water outlet valve is installed on the second raw water outlet branch pipe. A manual raw water outlet valve is installed on the main raw water outlet pipe.

[0007] One end of the raw water bypass pipe is connected to the raw water inlet main pipe section upstream of the raw water inlet manual valve, and the other end is connected to the raw water outlet main pipe section downstream of the raw water outlet manual valve. A raw water bypass valve is installed on the raw water bypass pipe.

[0008] Furthermore, the hot water inlet control valve group includes a first control branch and a second control branch connected in parallel. A hot water regulating electric valve is provided on the first control branch, and a hot water regulating manual valve and a hot water regulating manual valve are respectively provided upstream and downstream of the hot water regulating electric valve on the first control branch; a hot water bypass manual valve is provided on the second control branch.

[0009] Furthermore, a pressure gauge for hot water regulation before the electric valve and the manual valve for hot water regulation before the first control branch are provided, and a pressure gauge for hot water regulation after the electric valve and the manual valve for hot water regulation after the first control branch are provided.

[0010] Furthermore, the first or second hot water inlet branch pipe is also connected to a hot water inlet drain branch pipe, which is equipped with a hot water drain valve.

[0011] Furthermore, the first or second branch pipe for raw water inlet is also connected to a branch pipe for raw water inlet and sewage discharge, and a raw water discharge valve is installed on the branch pipe for raw water inlet and sewage discharge.

[0012] Furthermore, a hot water return temperature gauge and a hot water return pressure gauge are also installed on the hot water return main pipe section upstream of the hot water return manual valve.

[0013] Furthermore, a raw water outlet temperature gauge and a raw water outlet pressure gauge are also installed in the raw water outlet main pipe section downstream of the raw water outlet manual valve.

[0014] Furthermore, a drain valve for the raw water outlet pipe section is also connected to the raw water outlet maneuver valve downstream of the raw water outlet main pipe section.

[0015] The beneficial effects of the technical solution provided by this utility model embodiment are: when the weather is cold, hot water from the heat exchanger after the steam turbine generator set can be used to circulate and heat the raw water, so that the temperature of the raw water entering the desalination water treatment system is maintained at a high temperature, thereby increasing the output of the desalination water treatment equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the raw water heating device in an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] This utility model embodiment proposes a raw water heating device, such as... Figure 1 As shown, it includes: hot water inlet main pipe 1, hot water return main pipe 2, raw water inlet main pipe 3, raw water outlet main pipe 4, first heat exchanger 5, second heat exchanger 6, and raw water bypass pipe 7.

[0019] A hot water inlet manual valve 101 and a hot water inlet control valve group 102 are sequentially installed along the water flow direction on the hot water inlet main pipe 1. The hot water inlet main pipe 1 is connected to one end of the first channel of the first heat exchanger 5 through the first hot water inlet branch pipe and to one end of the first channel of the second heat exchanger 6 through the second hot water inlet branch pipe. A first hot water inlet valve 501 is installed on the first hot water inlet branch pipe and a second hot water inlet valve 601 is installed on the second hot water inlet branch pipe. The other end of the first channel of the first heat exchanger 5 is connected to the hot water return main pipe 2 through the first hot water return branch pipe and the other end of the first channel of the second heat exchanger 6 is connected to the hot water return main pipe 2 through the second hot water return branch pipe. A first hot water return valve 502 is installed on the first hot water return branch pipe and a second hot water return valve 602 is installed on the second hot water return branch pipe. A hot water return manual valve 201 is installed on the hot water return main pipe 2.

[0020] A raw water inlet maneuver valve 301 is installed on the raw water inlet main pipe 3. The raw water inlet main pipe 3 is connected to one end of the second channel of the first heat exchanger 5 through the first raw water inlet branch pipe and to one end of the second channel of the second heat exchanger 6 through the second raw water inlet branch pipe. A first raw water inlet valve 503 is installed on the first raw water inlet branch pipe and a second raw water inlet valve 603 is installed on the second raw water inlet branch pipe. The other end of the second channel of the first heat exchanger 5 is connected to the raw water outlet main pipe 4 through the first raw water outlet branch pipe and the other end of the second channel of the second heat exchanger 6 is connected to the raw water outlet main pipe 4 through the second raw water outlet branch pipe. A first raw water outlet valve 504 is installed on the first raw water outlet branch pipe and a second raw water outlet valve 604 is installed on the second raw water outlet branch pipe. A raw water outlet maneuver valve 401 is installed on the raw water outlet main pipe 4.

[0021] One end of the raw water bypass pipe 7 is connected to the raw water inlet main pipe 3 upstream of the raw water inlet manual valve 301, and the other end is connected to the raw water outlet main pipe 4 downstream of the raw water outlet manual valve 401. A raw water bypass valve 701 is provided on the raw water bypass pipe 7.

[0022] Specifically, the hot water inlet control valve assembly 102 includes a first control branch and a second control branch connected in parallel. A hot water regulating electric valve 1021 is provided on the first control branch. A hot water regulating manual valve 1022 is provided upstream of the hot water regulating electric valve 1021, and a hot water regulating manual valve 1023 is provided downstream of the hot water regulating electric valve 1021 on the first control branch. A hot water bypass manual valve 1024 is provided on the second control branch. Under normal circumstances, the hot water bypass manual valve 1024 is closed, and the hot water regulating electric valve 1021, the hot water regulating manual valve 1022, and the hot water regulating manual valve 1023 are closed. When manual valve 1023 is opened, hot water can flow through hot water inlet control valve group 102 and enter the first channel of the first heat exchanger 5 and the first channel of the second heat exchanger 6 respectively. Hot water regulating electric valve 1021 can be remotely controlled for convenient operation. When hot water regulating electric valve 1021 needs to be repaired or replaced, the hot water regulating pre-regulation manual valve 1022 and hot water regulating post-regulation manual valve 1023 can be closed, while the hot water bypass manual valve 1024 can be opened, so that the hot water supply to the first heat exchanger 5 and the second heat exchanger 6 will not be interrupted. Hot water inlet manual valve 101 is the main switch valve for hot water supply.

[0023] More preferably, a hot water regulating electric valve 1021 and a hot water regulating manual valve 1022 are provided on the first control branch, and a hot water regulating pressure gauge 1026 is provided on the first control branch, between the hot water regulating electric valve 1021 and the hot water regulating manual valve 1023; the hot water pressure upstream and downstream of the hot water regulating electric valve 1021 in the first control branch can be observed through the hot water regulating pressure gauge 1025 and the hot water regulating pressure gauge 1026.

[0024] More preferably, the first or second hot water inlet branch pipe is also connected to a hot water inlet drain branch pipe, and a hot water drain valve 103 is provided on the hot water inlet drain branch pipe; the function of the hot water inlet drain branch pipe and the hot water drain valve 103 is to provide a drain channel for sewage to be discharged when there is sewage in the hot water inlet main pipe 1, the first or second hot water inlet branch pipe.

[0025] More preferably, the first or second branch pipe of raw water inlet is also connected to a raw water inlet sewage branch pipe, and a raw water sewage discharge valve 303 is provided on the raw water inlet sewage discharge branch pipe; the function of the raw water inlet sewage discharge branch pipe and the raw water sewage discharge valve 303 is to provide a sewage discharge channel when there is sewage in the raw water inlet main pipe 3 or the first or second branch pipe of raw water inlet.

[0026] More preferably, a hot water return temperature gauge 202 and a hot water return pressure gauge 203 are also installed on the hot water return main pipe 2 section upstream of the hot water return manual valve 201.

[0027] Even better, a raw water outlet temperature gauge 402 and a raw water outlet pressure gauge 403 are also provided in the raw water outlet main pipe 4 section downstream of the raw water outlet manual valve 401.

[0028] More preferably, a raw water outlet main pipe 4 downstream of the raw water outlet manual valve 401 is also connected to a raw water outlet pipe section drain valve 404; when there is sewage in the raw water outlet main pipe 4 or the raw water bypass pipe 7, it can be discharged through the raw water outlet pipe section drain valve 404.

[0029] When the weather is warm, the raw water bypass valve 701 can be opened, and the hot water inlet manual valve 101, the hot water inlet control valve group 102, and the raw water inlet manual valve 301 can be closed. At this time, the raw water flows directly through the raw water bypass pipe 7 and then flows out from the raw water outlet main pipe 4 section downstream of the raw water outlet manual valve 401 and enters the desalination water treatment system.

[0030] When the weather is cold, close the raw water bypass valve 701, and open the hot water inlet manual valve 101, the hot water inlet control valve group 102, and the raw water inlet manual valve 301. Hot water from the heat exchanger after the steam turbine generator set enters the first channel of the first heat exchanger 5 and the first channel of the second heat exchanger 6 through the hot water inlet main pipe 1, the first hot water inlet branch pipe, and the second hot water inlet branch pipe, respectively. Then, it flows out through the first hot water return branch pipe, the second hot water return branch pipe, and the hot water return main pipe 2, and flows back. After the steam turbine generator set, a heat exchanger is installed. Raw water enters the second channel of the first heat exchanger 5 and the second channel of the second heat exchanger 6 through the raw water inlet main pipe 3, the first raw water inlet branch pipe, and the second raw water inlet branch pipe, respectively. Heat exchange takes place in the first heat exchanger 5 and the second heat exchanger 6. The heated raw water flows out through the first raw water outlet branch pipe, the second raw water outlet branch pipe, and the raw water outlet main pipe 4, and flows to the desalination and water treatment system. The raw water outlet temperature can reach 20℃, thereby increasing the output of the desalination and water treatment equipment.

[0031] Specifically, both the first heat exchanger 5 and the second heat exchanger 6 are plate heat exchangers.

[0032] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A raw water heating device, characterized in that, include: Hot water inlet main pipe (1), hot water return main pipe (2), raw water inlet main pipe (3), raw water outlet main pipe (4), first heat exchanger (5), second heat exchanger (6), raw water bypass pipe (7); A hot water inlet manual valve (101) and a hot water inlet control valve group (102) are sequentially installed along the water flow direction on the hot water inlet main pipe (1); the hot water inlet main pipe (1) is connected to one end of the first channel of the first heat exchanger (5) through the first branch pipe of hot water inlet, and to one end of the first channel of the second heat exchanger (6) through the second branch pipe of hot water inlet; a first hot water inlet valve (501) is installed on the first branch pipe of hot water inlet, and a second hot water inlet valve (601) is installed on the second branch pipe of hot water inlet; the other end of the first channel of the first heat exchanger (5) is connected to the hot water return main pipe (2) through the first branch pipe of hot water return, and the other end of the first channel of the second heat exchanger (6) is connected to the hot water return main pipe (2) through the second branch pipe of hot water return; a first hot water return valve (502) is installed on the first branch pipe of hot water return, and a second hot water return valve (602) is installed on the second branch pipe of hot water return; a hot water return manual valve (201) is installed on the hot water return main pipe (2); A raw water inlet manual valve (301) is provided on the raw water inlet main pipe (3). The raw water inlet main pipe (3) is connected to one end of the second channel of the first heat exchanger (5) through the first raw water inlet branch pipe and to one end of the second channel of the second heat exchanger (6) through the second raw water inlet branch pipe. A first raw water inlet valve (503) is provided on the first raw water inlet branch pipe and a second raw water inlet valve (603) is provided on the second raw water inlet branch pipe. The first heat exchanger... The other end of the second channel of the heat exchanger (5) is connected to the main outlet pipe (4) of the raw water through the first branch pipe of the raw water outlet; the other end of the second channel of the second heat exchanger (6) is connected to the main outlet pipe (4) of the raw water through the second branch pipe of the raw water outlet; a first raw water outlet valve (504) is provided on the first branch pipe of the raw water outlet; a second raw water outlet valve (604) is provided on the second branch pipe of the raw water outlet; a raw water outlet manual valve (401) is provided on the main outlet pipe (4); One end of the raw water bypass pipe (7) is connected to the raw water inlet main pipe (3) upstream of the raw water inlet manual valve (301), and the other end is connected to the raw water outlet main pipe (4) downstream of the raw water outlet manual valve (401). A raw water bypass valve (701) is provided on the raw water bypass pipe (7).

2. The raw water heating device as described in claim 1, characterized in that, The hot water inlet control valve group (102) includes a first control branch and a second control branch connected in parallel. A hot water regulating electric valve (1021) is provided on the first control branch. A hot water regulating manual valve (1022) and a hot water regulating manual valve (1023) are respectively provided upstream and downstream of the hot water regulating electric valve (1021) on the first control branch. A hot water bypass manual valve (1024) is provided on the second control branch.

3. The raw water heating device as described in claim 2, characterized in that, A pressure gauge (1025) for hot water regulation is provided between the electric valve (1021) for hot water regulation and the manual valve (1022) for hot water regulation in the first control branch, and a pressure gauge (1026) for hot water regulation is provided between the electric valve (1021) for hot water regulation and the manual valve (1023) for hot water regulation.

4. The raw water heating device as described in claim 1, 2, or 3, characterized in that, The first or second hot water inlet branch pipe is also connected to a hot water inlet drain branch pipe, and a hot water drain valve (103) is installed on the hot water inlet drain branch pipe.

5. The raw water heating device as described in claim 1, 2, or 3, characterized in that, The first or second branch pipe of raw water inlet is also connected to a raw water inlet and sewage discharge branch pipe, and a raw water discharge valve (303) is installed on the raw water inlet and sewage discharge branch pipe.

6. The raw water heating device as described in claim 1, 2, or 3, characterized in that, A hot water return temperature gauge (202) and a hot water return pressure gauge (203) are also installed on the hot water return main pipe (2) upstream of the hot water return manual valve (201).

7. The raw water heating device as described in claim 1, 2, or 3, characterized in that, A raw water outlet temperature gauge (402) and a raw water outlet pressure gauge (403) are also installed in the raw water outlet main pipe (4) section downstream of the raw water outlet manual valve (401).

8. The raw water heating device as described in claim 1, 2, or 3, characterized in that, Downstream of the raw water outlet manual valve (401), the raw water outlet main pipe (4) is also connected to a raw water outlet drain valve (404).

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