CN105674792B - A kind of ultrasound wave descaling method with feedback regulation function and Evaluation on Energy Saving function - Google Patents

Abstract

The invention relates to an ultrasonic descaling method with a feedback adjustment function and an energy-saving evaluation function. The method uses an ultrasonic descaling device for descaling, and the ultrasonic descaling device is provided with a controller. It has an AC power interface, an ultrasonic generator, an ultrasonic transducer and an online monitoring system. This method mainly uses ultrasonic waves to remove the dirt in the pipes of the heat exchange equipment, which increases the heat exchange capacity of the heat exchange equipment and strengthens the heat exchanger. heat transfer efficiency. In the descaling process of the present invention, the online monitoring system monitors the heat transfer coefficient and other parameters of the heat exchange equipment in real time, the feedback adjustment system adjusts the intermittent operation of the ultrasonic transducer, and the energy-saving evaluation system evaluates the energy saving of the ultrasonic intermittent operation . The invention combines the variable technology with the heat exchange system for the first time, so that the heat exchange system can reduce energy consumption while increasing the heat exchange capacity, and achieve the effect of energy saving.

Description

An ultrasonic descaling method with feedback adjustment function and energy-saving evaluation function

technical field

The invention belongs to the technical field of descaling of heat exchange pipes, and in particular relates to an ultrasonic descaling method with functions of feedback adjustment and energy-saving evaluation.

technical background

At present, heat exchange equipment is used in many production processes, and most heat exchange equipment uses liquid as the heat exchange medium. Heat exchange equipment using liquid as the heat exchange medium tends to generate dirt on the heat exchange wall during operation, and the formed dirt increases the heat exchange resistance during the heat exchange process, reduces the heat transfer efficiency of the heat exchange equipment, and causes energy loss. The traditional descaling technology has high cost and severe corrosion. Ultrasonic descaling and anti-scaling technology is a brand-new technology. Under the action of ultrasonic waves, the dirt in the fluid undergoes a series of changes in physical form and chemical properties, and disperses, crushes, loosens, and loosens, and is not easy to adhere to the pipe wall to form fouling;

During the descaling process, the existing ultrasonic descaling technology cannot conduct real-time monitoring of data such as heat transfer heat, heat transfer coefficient, and heat transfer temperature difference of the heat exchange equipment. The effect of dirt on the wall of the equipment, but also increases the cost of ultrasonic transducer operation. In addition, although the heat exchange equipment installed with ultrasonic transducers has achieved energy-saving effects, the energy-saving energy has not been evaluated.

Contents of the invention

The invention can not only ensure the improvement of the heat exchange efficiency of the heat exchange equipment, but also solve the problem of long-term operation of the ultrasonic transducer during the working process of the existing ultrasonic descaling and anti-scaling device, thereby saving energy. The device monitors the heat transfer coefficient and other parameters of the heat exchange equipment in real time, and evaluates the energy saving of the heat exchange equipment after the ultrasonic transducer is installed.

The technical solution provided by the present invention is a descaling method with feedback adjustment function and energy-saving evaluation function. The method uses an ultrasonic descaling device for descaling, and the ultrasonic descaling device is provided with a controller. The controller is equipped with an AC power interface, an ultrasonic generator, an ultrasonic transducer and an on-line monitoring system. The on-line monitoring system includes an on-line monitoring subsystem, a feedback adjustment system and an energy-saving evaluation system. electrical signal, and convert the electrical energy of the electrical signal into mechanical energy, and then convert the mechanical energy into sound energy; the ultrasonic transducer is connected to the heat exchange equipment, and the ultrasonic transducer removes the heat exchange through the shear effect that occurs inside it. Dirt on the surface of the equipment to achieve the purpose of descaling;

In the process of removing the dirt on the surface of the heat exchange equipment, the feedback adjustment system monitors and feeds back the heat exchange heat, heat exchange temperature difference, and heat transfer coefficient of the heat exchange equipment in real time, and adjusts the intermittent operation of the ultrasonic transducer to use To achieve the purpose of energy saving;

The energy-saving evaluation system analyzes the heat transfer of the ultrasonic transducer during the intermittent working process, and evaluates the energy-saving effect.

The online monitoring subsystem monitors the heat transfer temperature difference Δt, the heat transfer amount Q and the heat transfer coefficient K in the heat exchange process of the heat exchange equipment in real time and stores the data, and transmits the stored data to the feedback adjustment system and the energy-saving evaluation system respectively, and the feedback adjustment The system receives the heat transfer coefficient K transmitted by the online monitoring subsystem, compares the heat transfer coefficient K with the design heat transfer coefficient K ₀ of the heat exchange equipment, and feeds back the comparison result to the ultrasonic transducer. 90% of the thermal coefficient, the ultrasonic transducer does not need to work, otherwise, the ultrasonic transducer works, through the monitoring of the heat transfer coefficient K of the heat exchange equipment, the ultrasonic descaling device works intermittently to achieve the purpose of energy saving , the energy-saving evaluation system receives the heat transfer Q ₁ and Q ₂ and the heat transfer temperature difference Δt ₁ and Δt ₂ measured by the online monitoring subsystem in the same time before and after the operation of the ultrasonic transducer, and calculates

Calculate the heat transfer coefficients K ₁ and K ₂ of the heat exchange equipment before and after the operation of the ultrasonic transducer. Define Energy Efficiency , ,and The bigger the energy-saving effect, the better.

Beneficial effects of the present invention:

1. The fluid used in the heat exchange process does not need any treatment and can directly enter the heat exchange equipment, saving equipment operation and maintenance costs;

2. The effect of ultrasonic descaling is obvious, so that the heat exchange equipment can be operated in the best condition for a long time;

3. The vibration of the heat exchange tube wall destroys the boundary layer of the heat exchange fluid, reduces the fluid resistance, increases the heat transfer coefficient K, and thus increases the heat transfer effect;

4. The power consumption of the ultrasonic transducer is small, and the operating cost is extremely low. The ultrasonic transducer works intermittently through the feedback adjustment system, which prolongs the service life of the ultrasonic transducer;

5. The online monitoring system monitors the heat transfer coefficient, heat transfer capacity and heat transfer temperature difference of the heat exchange equipment in real time, and transmits them to the feedback adjustment system and energy-saving evaluation system;

6. The feedback adjustment system adjusts the intermittent work of the ultrasonic transducer.

7. The energy-saving evaluation system evaluates the energy-saving energy of ultrasonic intermittent work.

Description of drawings

Fig. 1 is a flow chart of the present invention for descaling and antiscaling.

detailed description

The specific details involved in the present invention will be further described below in conjunction with the accompanying drawings.

Referring to Fig. 1, the present invention has an ultrasonic descaling method with a feedback adjustment function and an energy-saving evaluation function. The method uses an ultrasonic descaling device for descaling, and the ultrasonic descaling device is provided with a controller. The controller is equipped with an AC power interface, an ultrasonic generator, an ultrasonic transducer and an on-line monitoring system. The on-line monitoring system includes an on-line monitoring subsystem, a feedback adjustment system and an energy-saving evaluation system. The ultrasonic generator receives an AC power interface to provide the electrical signal, and convert the electrical energy of the electrical signal into mechanical energy, and then convert the mechanical energy into acoustic energy; Heat the dirt on the surface of the equipment to achieve the purpose of descaling;

The invention combines the control technology with the heat exchanging system for the first time, so that the heat exchanging system can reduce energy consumption and achieve the effect of energy saving while increasing the heat exchanging capacity.

The online monitoring subsystem is used to read parameters such as the current heat transfer amount, heat transfer temperature difference, and heat transfer coefficient of the heat exchange equipment, and store data within a certain period of time; the feedback adjustment system is used to adjust the ultrasonic The transducer works intermittently;

The energy-saving evaluation system is used to evaluate the energy-saving effect of the intermittent operation of the ultrasonic transducer; the online monitoring subsystem monitors the heat transfer temperature difference Δt, the heat transfer amount Q and the heat transfer coefficient K in the heat exchange process of the heat exchange equipment in real time and store. And the stored data are transmitted to the feedback adjustment system and the energy-saving evaluation system respectively. The feedback adjustment system receives the heat transfer coefficient K transmitted by the online monitoring system, compares the heat transfer coefficient with the design heat transfer coefficient K ₀ of the heat exchange equipment, and feeds back the comparison result to the ultrasonic transducer. If the actual heat transfer coefficient reaches the design 90% of the heat transfer coefficient (cleaning coefficient), the ultrasonic transducer does not need to work, otherwise, the ultrasonic transducer works. By monitoring the heat transfer coefficient K of the heat exchange equipment, the ultrasonic descaling device works intermittently to achieve the purpose of energy saving. The energy-saving evaluation system receives the heat transfer quantities Q ₁ and Q ₂ and the heat transfer temperature difference Δt ₁ and Δt ₂ measured by the online monitoring system before and after the operation of the ultrasonic transducer within the same time period, and calculates the working conditions of the ultrasonic transducer.

The heat transfer coefficients K ₁ and K ₂ of the front and rear heat exchange equipment. Define energy efficiency, , ,and The bigger it is, the better the energy-saving effect.

The invention can not only ensure the improvement of the heat exchange efficiency of the heat exchange equipment, but also solve the problem of long-term operation of the ultrasonic transducer during the working process of the existing ultrasonic descaling and anti-scaling device, thereby saving energy. The device monitors the heat transfer coefficient and other parameters of the heat exchange equipment in real time, and evaluates the energy saving of the heat exchange equipment after the ultrasonic transducer is installed.

Claims (1)

1. A kind of 1. ultrasound wave descaling method with feedback regulation function and Evaluation on Energy Saving function, it is characterised in that methods described Scale removal is carried out using a ultrasound wave descaling device, the ultrasound wave descaling device is provided with controller, set in the controller There are AC power interface, supersonic generator, ultrasonic transducer and on-line monitoring system, on-line monitoring system includes online prison Subsystem, looped system and Evaluation on Energy Saving system are surveyed, the supersonic generator receives the electricity that AC power interface provides Signal, and the electric energy of electric signal is converted into mechanical energy, mechanical energy reconvert is into acoustic energy；The ultrasonic transducer connection heat exchange Equipment, the ultrasonic transducer pass through the dirt that its internal shearing effect occurred removes the heat transmission equipment surface, with up to To scale removal purpose；

   In the fouling processes for removing the heat transmission equipment surface, the heat exchange amount of the looped system heat exchanging equipment, change The hot temperature difference, heat transfer coefficient are monitored and fed back in real time, ultrasonic transducer intermittent work are adjusted, for reaching the mesh of energy-conservation 's；

   The Evaluation on Energy Saving system by analyzing the heat exchange amount during ultrasonic transducer intermittent work, and to section Energy effect is assessed；

   Monitor heat transfer temperature difference Δ t, heat exchange amount Q in subsystem heat exchanging equipment heat transfer process on-line and Coefficient K is carried out in fact When monitoring and data storage, data storage is delivered separately to looped system and Evaluation on Energy Saving system, looped system The Coefficient K of on-line monitoring subsystem transmission is received, by the Coefficient K and the design Coefficient K of heat transmission equipment₀Than Compared with, comparative result is fed back into ultrasonic transducer, if actual heat transfer coefficient, which reaches, designs the 90% of heat transfer coefficient, ultrasonic wave Transducer does not need work, conversely, ultrasonic transducer works, by the monitoring of the Coefficient K of heat exchanging equipment, makes ultrasound Ripple apparatus for eliminating sludge intermittent work, to reach the purpose of energy-conservation, Evaluation on Energy Saving system reception on-line monitoring subsystem measures super Heat exchange amount Q before and after acoustic wave transducer work in same time₁And Q₂And heat transfer temperature difference Δ t₁With Δ t₂, calculate ultrasonic waves The Coefficient K of heat transmission equipment before and after energy device work₁And K₂, define energy-saving efficiency,, andBigger section Energy effect is better.