CN213748088U - Automatic cleaning device for scale layer on inner wall of heat exchange tube of thermal equipment - Google Patents

Abstract

The utility model discloses a thermal equipment heat exchange tube inner wall dirt layer self-cleaning device, the utility model discloses a device carries out the medicament configuration through medicament configuration subassembly, through the switching of controller control first flow control valve and second flow control valve, realizes the automatic function of sending into cleaner, automatic control scavenging time, automatic collection pickling waste liquid, has avoided experimenter to contact the acidizing fluid closely in the cleaning process, prevents the injury that the acidizing fluid splashes etc. and causes the human body, has promoted occupational health safety level, and the flexible operation is convenient, has improved cleaning efficiency and security.

Description

Automatic cleaning device for scale layer on inner wall of heat exchange tube of thermal equipment

Technical Field

The utility model belongs to the metal material inner wall chemical analysis field, concretely relates to heating power equipment heat exchange tube inner wall scale layer self-cleaning device.

Background

When a thermal power generating unit and steam power equipment are periodically overhauled, chemical inspection is needed to master the conditions of corrosion, scaling or salt deposition of the thermal power equipment, and whether a water working condition treatment method adopted by the unit in the running period is reasonable or not and whether monitoring is effective or not are evaluated, improvement measures are provided, and the safe and economic running of the unit is ensured. The pipe cutting inspection of all stages of heating surfaces of the thermal equipment is one of important works. The pipe cutting inspection comprises the steps of measuring the scale amount, recording and analyzing the corrosion and scaling conditions of the inner surface, and the like, wherein the scale amount is usually measured by an acid pickling method for the scale layers on the inner walls of a water wall pipe, an economizer pipe, a low-temperature superheater pipe, a condenser pipe and the like, and after acid pickling, whether the inner surface of a pipe sample has corrosion pits can be judged more intuitively and accurately, so that the size, the depth, the quantity and the like of the corrosion pits can be conveniently measured.

The pickling process of the tube sample is generally manually operated by experimenters, and comprises the steps of preparing a cleaning solution, immersing the tube sample into the cleaning solution, stirring the cleaning solution, cleaning the inner wall of the tube sample by using a brush, taking out the tube sample, observing whether a scale layer on the inner wall is completely dissolved, and the like. The cleaning solution is usually 5% hydrochloric acid solution, a certain amount of corrosion inhibitor is added, the problems of acid liquor splashing, hydrochloric acid volatilization, danger to body health and the like exist in the process of preparing the cleaning solution and the subsequent pickling process of experimenters, waste liquid after pickling is manually collected and treated, and the risk of contact between the experimenters and dangerous chemicals is increased. If a cleaning device can be constructed, the device can automatically prepare cleaning solution, automatically clean the inner wall of a pipe sample and automatically collect pickling waste liquid, the whole cleaning process does not need manual contact with acid liquor, the problems can be better solved, but similar disclosure is not available in the prior art.

Disclosure of Invention

The utility model discloses an aim at researches the full-automatic cleaning process on metal tube appearance inner wall scale layer, provides a heating power equipment heat transfer pipe inner wall scale layer self-cleaning device, can avoid the contact of experimenter and acidizing fluid in the cleaning process when guaranteeing a tub appearance cleaning performance, promotes experimenter's occupational health safety level to reduce environmental pollution.

In order to achieve the purpose, the utility model discloses a medicament configuration subassembly and thermostatic bath, be provided with at least one washing container in the thermostatic bath, be provided with the brush that is used for the scavenge pipe appearance in the washing container, washing container bottom is provided with the waste liquid delivery pipe, the waste liquid delivery pipe inserts the waste liquid collecting tank, the medicament configuration subassembly inserts the washing container through the cleaning solution input tube, be provided with first flow control valve on the cleaning solution input tube, be provided with the second flow control valve on the waste liquid delivery pipe, first flow control valve, the equal connection director of second flow control valve, the controller is used for controlling the switching of first flow control valve and second flow control valve.

The reagent configuration assembly comprises an acid tank, a desalting water tank, a corrosion inhibitor tank and other reagent tanks, wherein the acid tank, the desalting water tank, the corrosion inhibitor tank and the other reagent tanks are all connected with a controller, and the controller is used for outputting and proportioning the acid tank, the desalting water tank, the corrosion inhibitor tank and the other reagent tanks.

Thiourea capable of eliminating the copper plating phenomenon on the inner wall of the tube sample is filled in other medicament tanks.

Be provided with the spring in the washing container, be fixed with the pipe appearance anchor clamps on the spring, spring coupling controller, the controller is used for controlling the flexible volume of spring.

Be provided with the agitator that can dismantle and change in the washing container, agitator connection director, the controller is used for controlling the switching of agitator.

The cleaning container is provided with a cover plate.

The constant temperature medium of the constant temperature groove is water bath or oil bath.

The acid tank, the desalting water tank, the corrosion inhibitor tank, other medicament tanks, the inner wall of the cleaning container, the pipe sample clamp, the stirrer, the spring, the cleaning solution input pipe, the first flow regulating valve, the waste liquid discharge pipe and the second flow regulating valve are all made of acid corrosion resistant materials.

Compared with the prior art, the utility model discloses a device carries out the medicament configuration through medicament configuration subassembly, through the switching of controller control first flow control valve and second flow control valve, realizes sending into the function of cleaner, automatic control scavenging time, automatic collection pickling waste liquid automatically, has avoided the experimenter to contact with the acidizing fluid closely in the cleaning process, prevents the injury that the acidizing fluid splashes etc. and cause the human body, has promoted occupational health safety level, and the flexible operation is convenient, has improved cleaning efficiency and security.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein, 1 is an acid tank, 2 is a desalting water tank, 3 is a corrosion inhibitor tank, 4 is other medicament tanks, 5 is a cleaning solution input pipe, 6 is a first flow regulating valve, 7 is a cleaning container, 8 is a pipe sample clamp, 9 is a stirrer, 10 is a spring, 11 is a cover plate, 12 is a constant temperature tank, 13 is a waste liquid discharge pipe, 14 is a second flow regulating valve, 15 is a waste liquid collecting tank, and 16 is a controller.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses a medicament configuration subassembly and thermostatic bath 12, be provided with at least one washing container 7 in the thermostatic bath 12, be provided with the brush that is used for the scavenge pipe appearance in the washing container 7, washing container 7 bottom is provided with waste liquid delivery pipe 13, waste liquid delivery pipe 13 inserts waste liquid collection tank 15, the medicament configuration subassembly passes through washing solution input tube 5 and inserts washing container 7, be provided with first flow control valve 6 on the washing solution input tube 5, be provided with second flow control valve 14 on the waste liquid delivery pipe 13, first flow control valve 6, second flow control valve 14 all connection director 16, controller 16 is used for controlling the switching of first flow control valve 6 and second flow control valve 14. The reagent configuration component comprises an acid tank 1, a desalting water tank 2, a corrosion inhibitor tank 3 and other reagent tanks 4, wherein the acid tank 1, the desalting water tank 2, the corrosion inhibitor tank 3 and the other reagent tanks 4 are all connected with a controller 16, and the controller 16 is used for outputting and proportioning the acid tank 1, the desalting water tank 2, the corrosion inhibitor tank 3 and the other reagent tanks 4. A spring 10 is arranged in the cleaning container 7, a tube-like clamp 8 is fixed on the spring 10, the spring 10 is connected with a controller 16, and the controller 16 is used for controlling the expansion and contraction amount of the spring 10. The cleaning container 7 is provided with a detachable and replaceable agitator 9, the agitator 9 is connected with a controller 16, and the controller 16 is used for controlling the opening and closing of the agitator 9. The cleaning vessel 7 is provided with a cover plate 11, and after the cover plate 11 is opened, the tube-like jig 8 can be completely immersed in or extended out of the cleaning vessel 7 by a spring 10.

Preferably, the thermostatic medium of the thermostatic bath 12 is a water bath or an oil bath.

Preferably, thiourea capable of eliminating the copper plating phenomenon on the inner wall of the tube sample is filled in the other agent tank 4.

The acid tank 1, the demineralized water tank 2, the corrosion inhibitor tank 3, the other agent tank 4, the inner wall of the cleaning container 7, the pipe sample clamp 8, the stirrer 9, the spring 10, the cleaning solution input pipe 5 which is contacted with the acid liquor, the first flow regulating valve 6, the waste liquid discharge pipe 13 and the second flow regulating valve 14 are all made of acid corrosion resistant materials.

The utility model discloses working method as follows:

fixing the processed tube sample on a tube sample clamp 8, completely placing the tube sample clamp 8 and the tube sample into a cleaning container 7 by controlling a spring 10 through a controller 16, closing a cover plate 11, completely sealing the cleaning container 7 at the moment, opening a first flow regulating valve 6 by the controller 16, controlling an acid tank 1, a desalting water tank 2 and a corrosion inhibitor tank 3 to discharge corresponding solutions according to a certain proportion, mixing 5% hydrochloric acid cleaning solution into the cleaning container 7 through a cleaning solution input pipe 5, automatically closing the first flow regulating valve 6 after the cleaning solution reaches a water level line of the cleaning container 7, stopping outputting the acid tank 1, the desalting water tank 2 and the corrosion inhibitor tank 3, opening a stirrer 9 and a constant temperature tank 12 by the controller 16, controlling the heating temperature of the constant temperature tank 12 to be not more than 50 ℃, controlling a soft brush to periodically brush the tube sample, stopping stirring of the stirrer 9 and brushing of the soft brush through the controller 16 after cleaning for a period of time, and opening a cover plate 11, extending a control spring 10 out of the tube sample clamp 8, observing the cleaning effect of the scale layer on the inner wall of the tube sample, if the cleaning is not finished, re-immersing the tube sample clamp 8 and the tube sample into the cleaning container 7 by the control spring 10, closing the cover plate 11, continuing to clean, if the cleaning is finished, taking the tube sample out of the tube sample clamp 8, immersing the tube sample clamp 8 into the cleaning container by the control spring 10, closing the cover plate 11, closing a thermostatic bath 12, opening a second flow control valve 14 on a waste liquid discharge pipe 13, automatically discharging the pickling waste liquid in the cleaning container 7 into a waste liquid collecting box 15, and if necessary, opening a first flow control valve 6, controlling the desalting water tank 2 to discharge desalting water, flushing the cleaning container 7 and discharging the waste liquid into the waste liquid collecting box 15.

If in the cleaning process, the phenomenon of copper plating on the inner wall of the tube sample is observed, the first flow regulating valve 5 is immediately opened, and the other medicament tanks 4 are controlled to discharge proper amount of medicament and added into the cleaning container 7, so that the phenomenon of copper plating disappears.

The utility model discloses an automatic prepare cleaning solution, self-cleaning pipe appearance inner wall, automatic collection pickling waste liquid, avoided the experimenter to contact the acidizing fluid closely in the cleaning process, prevent the injury that the acidizing fluid splashes etc. and cause the human body, promoted occupational health safety level, still airtight through acidizing fluid reservoir and washing container, reduced the acidizing fluid and volatilized the pollution to the environment.

The utility model discloses a thermal equipment heat exchange tube cuts pipe chemical examination time, the scale layer pickling full process automation among scale measurement and the corrosion status diagnostic process can be looked into the cleaning performance of management appearance inner wall at any time as required during the washing to do corresponding adjustment to washing time, intensity and washing medicament prescription, the flexible operation is convenient, has improved cleaning efficiency and security.

The utility model discloses a method is when concrete operation, automatic preparation cleaning solution, self-cleaning pipe appearance inner wall, automatic collection pickling waste liquid, can look over the cleaning performance of pipe appearance inner wall at any time as required during the washing to adjustment scavenging period, intensity and washing medicament formula, the flexible operation, the experimenter is avoided in whole cleaning process to contact closely the acidizing fluid, prevents the injury that the acidizing fluid splashes etc. and cause the human body, through the airtight of acidizing fluid reservoir and washing container, has reduced the acidizing fluid and has volatilized the pollution to the environment.

Claims (8)

1. An automatic cleaning device for scale layers on the inner wall of a heat exchange tube of a thermodynamic device is characterized by comprising a reagent configuration component and a thermostatic bath (12), wherein at least one cleaning container (7) is arranged in the thermostatic bath (12), a brush for cleaning tube samples is arranged in the cleaning container (7), a waste liquid discharge pipe (13) is arranged at the bottom of the cleaning container (7), the waste liquid discharge pipe (13) is connected into a waste liquid collecting tank (15), the reagent configuration component is connected into the cleaning container (7) through a cleaning solution input pipe (5), a first flow regulating valve (6) is arranged on the cleaning solution input pipe (5), a second flow regulating valve (14) and the first flow regulating valve (6) are arranged on the waste liquid discharge pipe (13), the second flow regulating valves (14) are connected with a controller (16), and the controller (16) is used for controlling the opening and closing of the first flow regulating valve (6) and the second flow regulating valve (14).

2. The automatic cleaning device for the scale layer on the inner wall of the heat exchange tube of the thermal equipment as claimed in claim 1, wherein the agent configuration component comprises an acid tank (1), a demineralized water tank (2), a corrosion inhibitor tank (3) and other agent tanks (4), the acid tank (1), the demineralized water tank (2), the corrosion inhibitor tank (3) and the other agent tanks (4) are all connected with a controller (16), and the controller (16) is used for output proportioning of the acid tank (1), the demineralized water tank (2), the corrosion inhibitor tank (3) and the other agent tanks (4).

3. The automatic cleaning device for the scale layer on the inner wall of the heat exchange tube of the thermal equipment as claimed in claim 2, wherein thiourea capable of eliminating the copper plating phenomenon on the inner wall of the tube sample is arranged in the other reagent tank (4).

4. The automatic cleaning device for the scale layer on the inner wall of the heat exchange tube of the thermal equipment as claimed in claim 1, wherein a spring (10) is arranged in the cleaning container (7), a tube sample clamp (8) is fixed on the spring (10), the spring (10) is connected with a controller (16), and the controller (16) is used for controlling the expansion amount of the spring (10).

5. The automatic cleaning device for the scale layer on the inner wall of the heat exchange tube of the thermal equipment as claimed in claim 1, wherein a detachable and replaceable stirrer (9) is arranged in the cleaning container (7), the stirrer (9) is connected with a controller (16), and the controller (16) is used for controlling the opening and closing of the stirrer (9).

6. The automatic cleaning device for the scale layer on the inner wall of the heat exchange tube of the thermal equipment as claimed in claim 1, wherein a cover plate (11) is arranged on the cleaning container (7).

7. The automatic cleaning device for the scale layer on the inner wall of the heat exchange tube of the thermal equipment as claimed in claim 1, wherein the thermostatic medium of the thermostatic bath (12) is a water bath or an oil bath.

8. The automatic cleaning device for the scale layer on the inner wall of the heat exchange tube of the thermal equipment as claimed in claim 1, wherein the acid tank (1), the demineralized water tank (2), the corrosion inhibitor tank (3), the other agent tank (4), the inner wall of the cleaning container (7), the tube sample clamp (8), the stirrer (9), the spring (10), the cleaning solution input tube (5), the first flow regulating valve (6), the waste liquid discharge tube (13) and the second flow regulating valve (14) are made of acid corrosion resistant materials.

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