CN110657703A - Plate radiator online cleaning device - Google Patents

Abstract

The invention provides an on-line cleaning device for the plate radiator, which directly cleans the scale on the surface of the radiator on-line without separating the plate heat exchanger from the original heat exchange equipment, which is convenient and quick to clean and has good cleaning effect. It includes a plate heat exchanger installed on the equipment. The plate heat exchanger is provided with a first water inlet pipe and a first water outlet pipe that communicate with the internal cavity of the equipment to be cooled. The plate heat exchanger is also provided with a process. The cooling water inlet pipe and the process cooling water outlet pipe are characterized in that: the process cooling water inlet pipe and the process cooling water outlet pipe are respectively provided with isolation valves, and the isolation valve of the process cooling water inlet pipe and the plate heat exchanger At least one inlet valve is arranged on the pipeline between the two, and at least one outlet valve is arranged on the pipeline between the isolating valve of the process cooling water outlet pipe and the plate heat exchanger, and it also includes a cleaning liquid tank. A water pump is arranged at the liquid outlet of the liquid tank.

Description

Plate radiator online cleaning device

technical field

The invention relates to the technical field of the structure of an open mill, in particular to an on-line cleaning device for a plate radiator.

Background technique

In industrial production, the plate radiator plays an important role in heat exchange and stabilizing the temperature of the equipment. However, with the prolongation of the use time and the hard cooling water quality, a scale layer will gradually form on the surface of the radiator, which will gradually decrease. If the heat exchange effect is not achieved, there will even be blockage, which cannot take away the heat of the production line, so it needs to be cleaned regularly. However, since the overall radiator is composed of stainless steel fins, and there are sealing strips inside, the existing cleaning method is to disassemble the plate heat exchanger and then clean it. When installing, it is necessary to re-stick the sealing strip. Improper handling will cause internal leakage, and dismantling and cleaning will take a long time.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides an on-line cleaning device for plate radiators, which directly cleans the scale on the surface of the radiating fins on-line without separating the plate heat exchanger from the original heat exchange equipment.

The technical solution of the plate radiator online cleaning device is as follows: it includes a plate heat exchanger installed on the equipment, and the plate heat exchanger is provided with a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, a first water inlet pipe, The plate heat exchanger is also provided with a process cooling water inlet pipe and a process cooling water outlet pipe. At least one inlet valve is arranged on the pipeline between the block valve of the process cooling water inlet pipe and the plate heat exchanger, and at least one inlet valve is arranged on the pipeline between the block valve of the process cooling water outlet pipe and the plate heat exchanger. The outlet valve also includes a cleaning liquid tank, a water pump is arranged at the liquid outlet of the cleaning liquid tank, the outlet of the water pump is connected to the inlet valve through a cleaning pipe, and the cleaning liquid tank is also provided with a liquid inlet , the liquid inlet is connected to the outlet valve through a return line, and the liquid inlet of the cleaning liquid tank 9 can also add cleaning agent and water.

It is further characterized by;

The liquid outlet is arranged at the bottom of the cleaning liquid tank, and the liquid inlet is arranged at the top position of the cleaning liquid tank to ensure the smooth return and output of the cleaning liquid;

The cleaning liquid tank is supported on the mobile trolley, so that the transportation of the cleaning liquid tank is convenient and fast, and different plate heat exchangers can be cleaned at different times;

The bottom of the cleaning solution tank is also provided with a drain pipe, the drain pipe is integrated with a drain valve, and a transparent observation port is provided on at least one side of the cleaning solution tank. A certain amount of foam will be generated in the cleaning liquid tank. Observe the liquid level through the transparent observation port. When it is too high, open the drain valve and discharge a certain amount of cleaning liquid through the drain pipe;

The cleaning agent is preferably citric acid;

The water pump is specifically a circulating water pump, and the water pump is externally connected to an electrical control cabinet, and the electrical control cabinet is arranged on one side of the top of the cleaning liquid tank to ensure convenient operation.

An on-line cleaning method for a plate radiator, which is characterized in that a block valve and an inlet valve are respectively installed on the process cooling water inlet pipe of the plate radiator, and a block valve and an outlet valve are installed on the process cooling water outlet pipe to clean the process cooling water. At this time, close the two block valves, connect the cleaning pipe and the return pipe of the cleaning tank to the inlet valve and the outlet valve respectively, then open the inlet valve and the outlet valve, and at the same time make sure that the water inside the cleaning tank is filled with half of the cleaning tank. , Add a certain amount of citric acid to the cleaning liquid tank, stir evenly, then turn on the switch of the water pump to clean, according to the severity of the scale, clean for 2 to 5 hours, turn off the water pump after cleaning, close the inlet valve and outlet valve, pull out Disconnect the return line and cleaning pipe, remove the cleaning liquid tank, open the shut-off valve before, and the plate radiator is restored to use.

It is further characterized in that due to the dissolution of scale during the cleaning process, a certain amount of foam will be generated in the cleaning liquid tank, and the liquid level is observed through a transparent observation port.

After the above technical solution is adopted, the function of the isolation valve is to form a closed space between the process cooling water pipe and the inside of the plate heat exchanger, because the disadvantage of the plate radiator is that in the process of cooling the liquid in the equipment, it will be on the cold side of the process water surface. It is attached with scale, which blocks the plate replacement for a long time, and cannot make the process water flow smoothly and cannot exchange heat. Therefore, a closed space is formed inside through two isolation valves for cleaning; it does not need to detach the plate heat exchanger. The original heat exchange equipment directly cleans the scale on the surface of the heat sink online, which is convenient and quick to clean and has a good cleaning effect.

Description of drawings

Fig. 1 is the three-dimensional view structure schematic diagram of the present invention;

The names corresponding to the serial numbers in the figure are as follows:

Plate heat exchanger 1, first water inlet pipe 2, first water outlet pipe 3, process cooling water inlet pipe 4, process cooling water outlet pipe 5, isolation valve 6, inlet valve 7, outlet valve 8, cleaning liquid tank 9, water pump 10. Liquid inlet 11, return pipeline 12, mobile trolley 13, sewage pipe 14, transparent observation port 15, electrical control cabinet 16.

Detailed ways

The plate radiator online cleaning device is shown in Figure 1: it includes a plate heat exchanger 1 installed on the equipment. The plate heat exchanger 1 is provided with a first water inlet pipe 2 and a first water outlet pipe that communicate with the internal cavity of the equipment to be cooled. 3. The plate heat exchanger 1 is also provided with a process cooling water inlet pipe 4 and a process cooling water outlet pipe 5. The process cooling water inlet pipe 4 and the process cooling water outlet pipe 5 are respectively provided with a block valve 6, and the process cooling water inlet pipe 5. At least one inlet valve 7 is arranged on the pipeline between the block valve 6 of the water pipe 4 and the plate heat exchanger 1, and at least one inlet valve 7 is arranged on the pipeline between the block valve 6 of the process cooling water outlet pipe 5 and the plate heat exchanger 1. The outlet valve 8 also includes a cleaning liquid tank 9. A water pump 10 is arranged at the liquid outlet of the cleaning liquid tank 9. The outlet of the water pump 10 is connected to the inlet valve 7 through a cleaning pipe 17, and the cleaning liquid tank 9 is also provided with a liquid inlet. 11. The liquid inlet 11 is connected to the outlet valve 8 through the return line 12, and the liquid inlet of the cleaning liquid tank 9 can also add cleaning agent and water at the same time.

The liquid outlet is arranged at the bottom of the cleaning liquid tank 9, and the liquid inlet 11 is arranged at the top position of the cleaning liquid tank 9 to ensure the smooth return and output of the cleaning liquid;

The cleaning liquid tank 9 is supported on the mobile trolley 13, so that the transportation of the cleaning liquid tank 9 is convenient and fast, and different plate heat exchangers can be cleaned at different times;

The bottom of the cleaning solution tank 9 is also provided with a drain pipe 14, the drain pipe 14 is integrated with a drain valve, and at least one side plate of the cleaning solution tank 9 is provided with a transparent observation port 15. During the cleaning process, due to the dissolution of scale, the cleaning A certain amount of foam will be generated in the liquid tank 9. Observe the liquid level through the transparent observation port 15. When it is too high, open the drain valve and let off a certain amount of cleaning fluid through the drain pipe 14;

The cleaning agent is preferably citric acid;

The water pump 10 is specifically a circulating water pump, and the water pump is externally connected to an electrical control cabinet 16, and the electrical control cabinet 16 is arranged on the top side of the cleaning liquid tank to ensure convenient operation.

An on-line cleaning method for a plate radiator: install a block valve and an inlet valve on the process cooling water inlet pipe of the plate radiator, install a block valve and an outlet valve on the process cooling water outlet pipe, and close the two when cleaning. Connect the cleaning pipe and the return pipe of the cleaning liquid tank to the inlet valve and the outlet valve respectively, then open the inlet valve and the outlet valve, and ensure that the water inside the cleaning liquid tank fills half of the cleaning liquid tank. Add a certain amount of citric acid to the box, stir evenly, and then turn on the switch of the water pump to clean. According to the severity of scale, clean for 2 to 5 hours. After cleaning, turn off the water pump, close the inlet valve and outlet valve, and unplug the return line. , clean the pipe, remove the cleaning liquid tank, open the block valve that was turned off before, and the plate radiator is restored to use.

During the cleaning process, due to the dissolution of scale, a certain amount of foam will be generated in the cleaning liquid tank. Observe the liquid level through the transparent observation port. When it is too high, open the drain valve and discharge a certain amount of cleaning liquid through the drain pipe.

Its working principle is as follows: the function of the block valve is to form a closed space between the process cooling water pipe and the inside of the plate heat exchanger, because the disadvantage of the plate radiator is that it will adhere to the process water surface on the cold side during the process of cooling the liquid in the equipment. Scale will block the plate replacement for a long time, and the process water cannot flow smoothly and cannot exchange heat. Therefore, two isolation valves are used to form a closed space inside for cleaning.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. A plate type radiator online cleaning device, which includes a plate type heat exchanger installed on the equipment, the plate type heat exchanger is provided with a first water inlet pipe and a first water outlet pipe that communicate with the internal cavity of the equipment to be cooled. The plate heat exchanger is also provided with a process cooling water inlet pipe and a process cooling water outlet pipe. At least one inlet valve is arranged on the pipeline between the block valve of the water pipe and the plate heat exchanger, and at least one outlet valve is arranged on the pipeline between the block valve of the process cooling water outlet pipe and the plate heat exchanger, which also It includes a cleaning liquid tank, a water pump is arranged at the liquid outlet of the cleaning liquid tank, the outlet of the water pump is connected to the inlet valve through a cleaning pipe, and the cleaning liquid tank is also provided with a liquid inlet, the liquid inlet The port is connected to the outlet valve through a return line, and the liquid inlet port of the cleaning liquid tank 9 can also add cleaning agent and water at the same time. 2 . The on-line cleaning device for plate radiators according to claim 1 , wherein the liquid outlet is arranged at the bottom of the cleaning liquid tank, and the liquid inlet is arranged at the top of the cleaning liquid tank. 3 . 3 . The on-line cleaning device for plate radiators according to claim 1 , wherein the cleaning liquid tank is supported on a mobile trolley. 4 . 4 . The on-line cleaning device for plate radiators according to claim 1 , wherein a drain pipe is further provided at the bottom of the cleaning liquid tank, and a drain valve is integrated on the drain pipe. At least one side panel is provided with a transparent observation port. 5 . The on-line cleaning device for plate radiators according to claim 1 , wherein the cleaning agent is preferably citric acid. 6 . 6 . The on-line cleaning device for plate radiators according to claim 1 , wherein the water pump is a circulating water pump, the water pump is externally connected to an electrical control cabinet, and the electrical control cabinet is arranged on the side of the cleaning liquid tank. 7 . top side position. 7. An on-line cleaning method for a plate radiator, characterized in that: a block valve and an inlet valve are respectively installed on the process cooling water inlet pipe of the plate radiator, and a block valve and an outlet valve are installed on the process cooling water outlet pipe. , When cleaning, close the two isolation valves, connect the cleaning pipe and return pipe of the cleaning liquid tank to the inlet valve and the outlet valve respectively, then open the inlet valve and the outlet valve, and at the same time ensure that the water inside the cleaning liquid tank is full of the cleaning liquid tank Add a certain amount of citric acid to the cleaning liquid tank, stir evenly, and then turn on the switch of the water pump to clean. According to the severity of the scale, clean for 2 to 5 hours. After the cleaning is completed, turn off the water pump and close the inlet valve and outlet valve. , unplug the return line, the cleaning pipe, remove the cleaning liquid tank, open the block valve that was turned off before, and the plate radiator resumes use. 8. The on-line cleaning method of a plate radiator as claimed in claim 7, characterized in that: due to the dissolution of scale during the cleaning process, a certain amount of foam will be generated in the cleaning liquid tank, and the liquid level is observed through the transparent observation port, When it is too high, open the drain valve and discharge a certain amount of cleaning fluid through the drain pipe.

Images