Shell-and-tube heat exchanger cleaning device

Abstract

The utility model provides a shell-and-tube heat exchanger cleaning device, which belongs to the technical field of heat exchangers and comprises a shell-and-tube heat exchanger, a hot water inlet pipe is arranged on the upper portion of one end of the shell-and-tube heat exchanger, and a hot water outlet pipe is arranged on the lower portion of the other end of the shell-and-tube heat exchanger. A second flange is arranged below the hot water outlet pipe, a drainage pipeline is arranged on one side of the hot water outlet pipe, and flushing liquid in the flushing water tank can be supplied into the shell-and-tube heat exchanger through the hot water inlet pipeline and the flushing pipeline by the chemical feeding pipe by closing the first valve and controlling the manual valve. And the outer wall of the heat exchange pipeline in the shell-and-tube heat exchanger is flushed through pressurization of the flushing pump set, a second valve on the hot water outlet pipe is closed after flushing, an electric valve on the drainage pipeline is opened, and waste liquid generated after flushing is pumped into a sewage tank.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, and in particular to a cleaning device for a shell and tube heat exchanger. Background Art

[0002] A shell and tube heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. That is, water or other media is placed in a large closed container, and a pipe passes through the container, allowing hot water to flow through the pipe. Due to the temperature difference between the hot water in the pipe and the cold and hot water in the container, heat exchange will be formed. The heat of the high-temperature object is always transferred to the low-temperature object, thus exchanging the heat of the water in the pipe to the cold water in the container.

[0003] At present, the heat exchange tubes in shell and tube heat exchangers are mostly inside the tube shell. When the heat exchange tubes are used for heat exchange for a long time, scaling will occur on the outer wall of the heat exchange tubes, thereby reducing the heat exchange effect of the heat exchange tubes, thereby reducing the efficiency of the heat exchanger. In order to solve the above problem, a shell and tube heat exchanger cleaning device is proposed to solve the above problem. Utility Model Content

[0004] In view of this, the utility model provides a shell and tube heat exchanger cleaning device, which can close the first valve and control the manual valve to allow the dosing pipe to supply the flushing liquid in the flushing water tank into the shell and tube heat exchanger through the hot water inlet pipe and the flushing pipe, and then flush the outer wall of the heat exchange pipe in the shell and tube heat exchanger by pressurizing the flushing pump group. After flushing, close the second valve on the hot water outlet pipe and open the electric valve on the drainage pipe to pump the waste liquid after flushing into the sewage tank.

[0005] In order to solve the above technical problems, the utility model provides a shell and tube heat exchanger cleaning device: comprising a shell and tube heat exchanger, a hot water inlet pipe is provided at the upper part of one end of the shell and tube heat exchanger, a hot water outlet pipe is provided at the lower part of the other end of the shell and tube heat exchanger, a first flange is provided above the hot water inlet pipe, a flushing pipe is provided on one side of the hot water inlet pipe, a flushing pump group is provided at one end of the flushing pipe, a flushing water tank is provided on the side of the flushing pump group, a second flange is provided below the hot water outlet pipe, and a drainage pipe is provided on one side of the hot water outlet pipe.

[0006] One end of the shell and tube heat exchanger is provided with a water inlet flange for connecting the first water distributor and the shell and tube heat exchanger, and the other end of the shell and tube heat exchanger is provided with a water outlet flange for connecting the second water distributor and the shell and tube heat exchanger.

[0007] A first water divider for fixing the first partition plate and the second partition plate is provided on one side of the water inlet flange, and a second water divider for fixing the water divider plate is provided on one side of the water outlet flange.

[0008] A first partition for separating the heat exchange tubes in the shell and tube heat exchanger left and right is vertically set in the middle of the first water distributor, a second partition for separating the first cold water tube and the second cold water tube is fixedly set in the middle of the first partition, and a water dividing plate for separating the heat exchange tubes in the shell and tube heat exchanger up and down is parallelly set in the middle of the second water distributor.

[0009] A first cold water pipe for injecting cold water into the upper heat exchange tubes is provided at the top of the first water distributor, and a second cold water pipe for injecting cold water into the lower heat exchange tubes is provided at the bottom of the first water distributor.

[0010] A first valve for controlling the entry of hot water into the shell and tube heat exchanger is provided at the upper end of the first flange, an electric valve for controlling the opening and closing of the flushing pipe is provided at one end of the flushing pipe, a flushing pump group for flushing scale on the heat exchange tubes in the shell and tube heat exchanger is provided at one end of the electric valve, a pump group bracket for supporting the flushing pump group is provided below the flushing pump group, and a pipe bracket for supporting the flushing pipe is provided below the flushing pipe.

[0011] A dosing pipe for circulating the liquid in the flushing water tank is provided on one side of the flushing water tank, a manual valve for manually opening and closing the dosing pipe is provided on the dosing pipe, and an equipment bracket for supporting the pump group bracket and the flushing water tank is provided on the lower surface of the pump group bracket.

[0012] A second valve for controlling the outflow of hot water after heat exchange is provided at the lower end of the second flange, an electric valve for electrically opening and closing the drainage pipe is provided on the drainage pipe, and a sewage tank for storing sewage after flushing scale is provided on one side of the electric valve.

[0013] Heat exchange brackets for supporting the shell and tube heat exchanger are provided on the lower surfaces of both ends of the shell and tube heat exchanger, and U-shaped pads for improving supporting performance are provided on the upper surfaces of the heat exchange brackets.

[0014] The beneficial effects of the above technical solution of the utility model are as follows:

[0015] Close the first valve, control the manual valve to make the dosing pipe supply the flushing liquid in the flushing water tank into the shell and tube heat exchanger through the hot water inlet pipe and the flushing pipe, and then flush the outer wall of the heat exchange pipe in the shell and tube heat exchanger by pressurizing the flushing pump group. After flushing, close the second valve on the hot water outlet pipe and open the electric valve on the drainage pipe to pump the waste liquid after flushing into the sewage tank, and then clean the scale on the outer wall of the heat exchange pipe, thereby improving the working efficiency of the shell and tube heat exchanger. The lower surface of both ends of the shell and tube heat exchanger is provided with a heat exchange bracket for supporting the shell and tube heat exchanger, and the upper surface of the heat exchange bracket is provided with a U-shaped pad for improving the supporting performance. The U-shaped pad can improve the pressure bearing performance of the heat exchange bracket. The lower end of the second flange is provided with a second valve for controlling the outlet of hot water after heat exchange, and the drainage pipe is provided with an electric valve for electrically opening and closing the drainage pipe. A sewage tank is provided on one side of the electric valve for storing sewage after flushing scale. The sewage tank can be used for secondary utilization of the collected sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of a shell and tube heat exchanger cleaning device of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model viewed from above;

[0018] Figure 3 It is a side sectional view of the utility model;

[0019] Figure 4 It is a side view structural schematic diagram of the utility model;

[0020] Figure 5 This is a front view structural schematic diagram of the utility model;

[0021] Figure 6 It is a main body sectional view of the utility model.

[0022] Explanation of reference numerals: 100, shell and tube heat exchanger; 101, water inlet flange; 102, water outlet flange; 103, hot water inlet pipe; 104, hot water outlet pipe; 105, first flange; 106, heat exchange bracket; 107, second flange; 108, equipment bracket; 109, U-shaped pad; 200, first water distributor; 202, first partition; 203, water distributor plate; 204, first cold water pipe; 205, second cold water pipe; 206, second partition; 300, second water distributor; 301, drainage pipe; 302, first valve; 303, second valve; 400, flushing pump group; 401, electric valve; 402, flushing pipe; 403, pipe bracket; 404, dosing pipe; 405, manual valve; 406, flushing water tank; 407, pump group bracket; 408, sewage tank; DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-6 , the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0024] like Figure 1-6As shown: This embodiment provides a shell and tube heat exchanger cleaning device: comprising a shell and tube heat exchanger 100, a hot water inlet pipe 103 for hot water to be exchanged is provided at the upper part of one end of the shell and tube heat exchanger 100, a hot water outlet pipe 104 for hot water after heat exchange is provided at the lower part of the other end of the shell and tube heat exchanger 100, a first flange 105 for connecting the hot water inlet pipe 103 to a pipe or a valve is provided above the hot water inlet pipe 103, a flushing pipe 402 for flushing the outer wall of the heat exchange pipe is provided on one side of the hot water inlet pipe 103, and the hot water inlet pipe 103 is flushed by the water flowing down the hot water inlet pipe 103. The tee is connected to the flushing pipe 402. A flushing pump group 400 for increasing the water pressure to flush the outer wall of the heat exchange pipe is provided at one end of the flushing pipe 402. A flushing water tank 406 for preparing a flushing solution for flushing the scale formed in the heat exchange pipe is provided on the side of the flushing pump group 400. A second flange 107 for connecting the hot water outlet pipe 104 with a pipe or a valve is provided below the hot water outlet pipe 104. A drainage pipe 301 for discharging the flushing scale wastewater is provided on one side of the hot water outlet pipe 104. The hot water outlet pipe 104 is connected to the drainage pipe 301 through a downstream tee.

[0025] When in use, close the first valve 302, control the manual valve 405 to allow the dosing pipe 404 to supply the flushing liquid in the flushing water tank 406 into the shell and tube heat exchanger 100 through the hot water inlet pipe 103 and the flushing pipe 402, and then pressurize the outer wall of the heat exchange pipe in the shell and tube heat exchanger 100 through the flushing pump group 400 to flush. After flushing, close the second valve 303 on the hot water outlet pipe 104, open the electric valve 401 on the drainage pipe 301, and pump the waste liquid after flushing into the sewage tank 408.

[0026] This embodiment provides a shell and tube heat exchanger cleaning device,

[0027] like Figure 1 , 2, 5, and 6: a water inlet flange 101 for connecting the first water distributor 200 and the shell and tube heat exchanger 100 is provided at one end of the shell and tube heat exchanger 100, and a sealing gasket is added in the middle of the water inlet flange 101; a water outlet flange 102 for connecting the second water distributor 300 and the shell and tube heat exchanger 100 is provided at the other end of the shell and tube heat exchanger 100, and a sealing gasket is added in the middle of the water outlet flange 102; a first water distributor 200 for fixing the first partition 202 and the second partition 206 is provided on one side of the water inlet flange 101; a second water distributor 300 for fixing the water distributor plate 203 is provided on one side of the water outlet flange 102; a first partition 202 for separating the heat exchange tubes in the shell and tube heat exchanger 100 from left to right is vertically set in the middle of the first water distributor 200; the first partition 202 is welded to the inner wall of the first water distributor 200; a first cold water pipe 204 is fixedly provided in the middle of the first partition 202 for separating the first cold water pipe 204 A second baffle plate 206 for a second cold water pipe 205 is welded to the first baffle plate 202 on one side, and the other side of the second baffle plate 206 is welded to the inner wall of the first water distributor 200. A water distributor plate 203 for separating the heat exchange pipes in the shell and tube heat exchanger 100 from top to bottom is parallelly arranged in the middle of the second water distributor 300, and the water distributor plate 203 is welded to the inner wall of the second water distributor 300. A first cold water pipe 204 for injecting cold water into the upper heat exchange pipe is arranged at the top of the first water distributor 200. The first cold water pipe 204 penetrates through the top of the first water distributor 200 and enters above the second baffle plate 206 in the first water distributor 200. The penetration is welded and sealed. A second cold water pipe 205 for injecting cold water into the lower heat exchange pipe is arranged at the bottom of the first water distributor 200. The second cold water pipe 205 penetrates through the bottom of the first water distributor 200 and enters below the second baffle plate 206 in the first water distributor 200.

[0028] like Figure 2 , 3 4 and 5: the first flange 105 has a first valve 302 at the upper end thereof for controlling hot water to enter the shell and tube heat exchanger 100. The first valve 302 is flange-connected to the hot water inlet pipe 103. The first valve 302 can be electric or manual, and can be selected according to the budget. An electric valve 401 for controlling the opening and closing of the flushing pipe 402 is provided at one end thereof. The electric valve 401 is flange-connected to the flushing pipe 402. The electric valve 401 has a first valve 302 at one end thereof for flushing the shell and tube heat exchanger 100. A flushing pump unit 400 for scaling the heat exchange tubes in the device 100 is provided, the flushing pump unit 400 is connected to the flushing pipe 402 with a flange, a pump unit bracket 407 for supporting the flushing pump unit 400 is provided below the flushing pump unit 400, the pump unit bracket 407 and the flushing pump unit 400 are fixed with bolts, a pipe bracket 403 for supporting the flushing pipe 402 is provided below the flushing pipe 402, the upper surface of the pipe bracket 403 is used to support the lower surface of the flushing pipe 402 and is fixed to the equipment bracket 108 with bolts.

[0029] like Figure 1 ,3 , 4, and 5: a dosing pipe 404 for circulating the liquid in the flushing water tank 406 is provided on one side of the flushing water tank 406, one end of the dosing pipe 404 penetrates through the flushing water tank 406 and enters the flushing water tank 406, and a sealing treatment is performed at the penetration point. A manual valve 405 for manually opening and closing the dosing pipe 404 is provided on the dosing pipe 404, and the manual valve 405 and the dosing pipe 404 can be hot-melt welded or flange-connected, and an equipment bracket 108 for supporting the pump group bracket 407 and the flushing water tank 406 is provided on the lower surface of the pump group bracket 407, and a second valve 303 for controlling the outlet of hot water after heat exchange is provided at the lower end of the second flange 107, and the second valve 303 is flange-connected to the drainage pipe 301, and the second The valve 303 can be selected to be electric or manual according to the budget. The drainage pipe 301 is provided with an electric valve 401 for electrically opening and closing the drainage pipe 301. A sewage tank 408 for storing sewage after flushing scaling is provided on one side of the electric valve 401. Heat exchange brackets 106 for supporting the shell and tube heat exchanger 100 are provided on the lower surfaces of both ends of the shell and tube heat exchanger 100. A heat exchange bracket 106 can be added to the side of the heat exchange bracket 106 close to the flushing pipe 402 to connect with the equipment bracket 108 to improve the pressure-bearing performance of the equipment. A U-shaped pad 109 for improving the supporting performance is provided on the upper surface of the heat exchange bracket 106. The U-shaped pad 109 can be welded or bolted to the upper surface of the heat exchange bracket 106.

[0030] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A shell and tube heat exchanger cleaning device, characterized in that: The invention comprises a shell and tube heat exchanger (100), wherein a hot water inlet pipe (103) is provided at the upper part of one end of the shell and tube heat exchanger (100), a hot water outlet pipe (104) is provided at the lower part of the other end of the shell and tube heat exchanger (100), a first flange (105) is provided above the hot water inlet pipe (103), a flushing pipe (402) is provided at one side of the hot water inlet pipe (103), a flushing pump group (400) is provided at one end of the flushing pipe (402), a flushing water tank (406) is provided at the side of the flushing pump group (400), a second flange (107) is provided below the hot water outlet pipe (104), and a drainage pipe (301) is provided at one side of the hot water outlet pipe (104).

2. A shell and tube heat exchanger cleaning device according to claim 1, characterized in that: A water inlet flange (101) is provided at one end of the shell and tube heat exchanger (100), and a water outlet flange (102) is provided at the other end of the shell and tube heat exchanger (100).

3. A shell and tube heat exchanger cleaning device as claimed in claim 2, characterized in that: A first water distributor (200) is provided on one side of the water inlet flange (101), and a second water distributor (300) is provided on one side of the water outlet flange (102).

4. A shell and tube heat exchanger cleaning device as claimed in claim 3, characterized in that: A first partition (202) is vertically arranged in the middle of the first water divider (200), a second partition (206) is fixedly arranged in the middle of the first partition (202), and a water divider plate (203) is parallelly arranged in the middle of the second water divider (300).

5. A shell and tube heat exchanger cleaning device as claimed in claim 4, characterized in that: A first cold water pipe (204) is provided at the top of the first water distributor (200), and a second cold water pipe (205) is provided at the bottom of the first water distributor (200).

6. A shell and tube heat exchanger cleaning device as claimed in claim 5, characterized in that: A first valve (302) is provided at the upper end of the first flange (105), an electric valve (401) is provided at one end of the flushing pipe (402), the flushing pump group (400) is provided at one end of the electric valve (401), a pump group bracket (407) is provided below the flushing pump group (400), and a pipe bracket (403) is provided below the flushing pipe (402).

7. A shell and tube heat exchanger cleaning device as claimed in claim 6, characterized in that: A dosing pipe (404) is provided on one side of the flushing water tank (406), a manual valve (405) is provided on the dosing pipe (404), and an equipment bracket (108) is provided on the lower surface of the pump group bracket (407).

8. A shell and tube heat exchanger cleaning device as claimed in claim 7, characterized in that: A second valve (303) is provided at the lower end of the second flange (107), the electric valve (401) is provided on the drainage pipe (301), and a sewage tank (408) is provided on one side of the electric valve (401).

9. A shell and tube heat exchanger cleaning device as claimed in claim 8, characterized in that: Heat exchange brackets (106) are provided on the lower surfaces of both ends of the shell and tube heat exchanger (100), and U-shaped pads (109) are provided on the upper surfaces of the heat exchange brackets (106).

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