CN2373198Y

CN2373198Y - On-line preventing and descaling device

Info

Publication number: CN2373198Y
Application number: CN 99209566
Authority: CN
Inventors: 吴元华; 吴满洋
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-28
Filing date: 1999-04-28
Publication date: 2000-04-12
Anticipated expiration: 2009-04-28

Abstract

The utility model relates to a scale preventing and removing device assembled on heat exchange, cooling and heating unit equipment in chemical industry, heating, cooling generating and other industry. An inlet tube and an outlet tube in the utility model are respectively provided with a forward and a backward flowing valves, so that fluid can flow along one direction for a period of time and then flow backward so as to remove scale in equipment tubes. The device with low cost and simple operation can keep the equipment continuously operating without stop. The scale in the equipment and the tubes needs not to be periodically cleaned with chemical detergent.

Description

The online device that prevents and remove fouling

The utility model relates to a kind of device of removing pipeline scale, particularly a kind of pipeline or cooler to production process, and equipment such as heat exchanger are removed the device of fouling.

At chemical industry; heat supply; refrigeration; in the production process of industries such as generating; its conveyance conduit; cooler; heater; interchanger is easy at in-tube fouling because of the long-term one-way flow of fluid; influenced ordinary production; the method of removing fouling at present mainly contains chemical method and physics method; chemical method is that the import and export pipe joint is taken apart; feed inorganic acid then or cleaning agent embathes; the physics method is to adopt ultrasonic wave or vibratory drilling method etc.; these methods have the following disadvantages respectively; 1. need to shut down or stop production; the continuity that influence is produced; 2. use inorganic acid or cleaning agent to pipeline; equipment has corrosiveness, and operating personnel are also had harm, and 3. ultrasonic wave or other physics method only are suitable for part occasion and skinny device; required cost height is so simple but effective method and device are being sought to the cleaning of pipeline scale by many factories always.

The purpose of this utility model provides and does not a kind ofly need to shut down and stop production, and without chemical, does not change existing equipment basic structure, simple to operate, the effective online device that prevents and remove fouling.

The design people in production practices, recognize the reason of equipment and pipeline scale be uncleanly fluid when flowing impurity attached to inner-walls of duct, just formed dirt through long-term deposition, these deposits are arranged toward the direction, the fluid flowing time is long more, the dirt molecules align is tight more many more, even so feed chemical from inlet pipeline, the time of embathing also wants long enough slowly to have reacted, if imagination flows its another mistake of a period of time relief to flowing at fluid, just can make its deposit loose, can reach the purpose of this utility model so that eliminate.

The utility model is achieved in that at the existing equipment import and export and is provided with an online device that prevents and remove fouling, this device is the valve that is respectively equipped with forward flow and reverse flow at equipment importation pipe and outlet, valve one end of forward flow and reverse flow is connected with outlet with inlet tube respectively, receive the arrival end of equipment after the other end parallel connection of valve, the port of export of equipment is received the valve parallel connected end of another group forward flow and reverse flow again, and the other end of this group valve connects inlet tube and outlet.According to the automated production process need, valve can adopt manual control, also can adopt electronic, pneumatic control.

In order to guarantee to produce the quality of product, pipeline or equipment have dirt to take next equipment to when avoiding after forward work a period of time reverse flow, perhaps material becomes product and influences quality because of flow direction changes through equipment generation chemical change, can add two valves in the import and export of equipment, underproof product carries out fugitive emission or processing in will managing.

The utility model has the advantages that:

1. need not shut down, stop production when removing in the pipe equipment dirt, regularly the conversion fluid flow direction can prevent the pipe-line equipment fouling at ordinary times.

2. equipment is simple, and cost is low, processing ease.

3. do not need to add inorganic acid or cleaning agent cleans, can keep the service life of equipment pipe.

Below in conjunction with accompanying drawing enforcement structure of the present utility model is described.

Fig. 1 is the heat exchanger work schematic diagram of traditional mode of production;

Fig. 2 is that the online device that prevents and remove fouling of heat exchanger is implemented structure chart.

See that from figure the equipment of traditional mode of production only is provided with imported valve 7 and outlet valve 6 at inlet tube 2 and outlet 3, fluid through A end access arrangement 1, flows to outlet 3 from the B end through valve 6 from valve 7 again.

The good antiscale property device 4 of Fig. 2 is to be provided with two groups of valves at inlet tube 2 and outlet 3, wherein V3, V2 are one group, (the V3 label is 5, and the V2 label is 6), V1, V4 are one group, (the V1 label is 7, and the V4 label is 8), valve 7 and 6 is a forward flow, valve 5 and 8 is a reverse flow, connect the B end of heat transmission equipment 1 after valve 5 and 6 the end parallel connection, connect the A end of equipment 1 after valve 7 and 8 the end parallel connection, the side a and b of equipment is respectively equipped with emission treatment valve 9.

The course of work of this device is when forward flow is worked, to open valve V1 and valve V2, close V3 and V4, fluid is from the inlet tube valve V1 that flows through, and enters from the device A end and carries out heat exchange, brings out from B then and mouthful flows out to outlet through valve V2 again, if when wanting reverse flow work, valve V1, V2 close, and V3, V4 open, and fluid enters from inlet tube, enter heat-exchange apparatus through valve V3 from the B end, flow out to outlet from the A end through valve V4 again.

Claims

1. online device that prevents and remove fouling, comprise inlet tube, imported valve, outlet, outlet valve, it is characterized in that: be respectively equipped with the valve (7) of forward flow and the valve (8) of reverse flow at inlet tube (2) and outlet (3), valve of forward flow and reverse flow (7) and (8) one ends connect inlet tube (2) and outlet (3) respectively, connect the arrival end of equipment (1) after the other end parallel connection, the port of export of equipment (1) is received the valve (5) of another group forward flow and valve (6) parallel connected end of reverse flow, and the other end of valve (5) and (6) connects inlet tube (2) and outlet (3) respectively.

2. the online device that prevents and remove fouling according to claim 1 is characterized in that the import and export two ends of equipment (1) are provided with emission treatment valve (9).

3. the online device that prevents and take out stains according to claim 1 is characterized in that valve adopts manually-operated gate or electronic, operated pneumatic valve.