CN102626700A - Ultrasonic cleaning device and ultrasonic cleaning method for underwater structure objects - Google Patents

Abstract

The invention discloses an ultrasonic cleaning device and method for an underwater structure. The cleaning device includes a power supply part and a cleaning part. The cleaning part includes a cleaning part and a waterproof device for preventing water from entering the cleaning part. The cleaning part includes an ultrasonic The cleaning device and the water jet cleaning device, the ultrasonic cleaning device includes a connected ultrasonic electric energy generating device and an ultrasonic transducer device, and the jet generating device includes a high-pressure water pump and a nozzle connected through a jet pipeline. In the cleaning method of the present invention, the ultrasonic waves generated by the ultrasonic cleaning device are focused by the horn in the ultrasonic transducer device to destroy insoluble dirt, and the low-pressure and high-speed jet flow formed by the high-pressure water pump and the jet pipeline in the water jet cleaning device , Rinse the surface to be cleaned to make the dirt fall off. It is convenient and efficient to clean without stopping work, and has a good promotion prospect.

Description

Ultrasonic cleaning device and method for underwater structures

technical field

The invention relates to an ultrasonic cleaning device for underwater structures and an ultrasonic cleaning method based on the ultrasonic cleaning device, belonging to the field of ultrasonic technology.

Background technique

Dam gates or inner walls of water pipes and other equipment work underwater, and scales will form over the years, affecting normal functions and even causing equipment damage. If the gates cannot be opened normally when the flood comes, the consequences will be disastrous. At present, there are two commonly used methods for gates or inner walls of water pipes and other equipment:

1. The first method is to use high-pressure water jets for cleaning. The disadvantage of this method is that if the flow rate is too fast, it will cause excessive pressure, which will damage the paint and the structure itself, but if the flow rate is reduced, the cleaning effect will be greatly reduced;

2. The second is to clean only when the machine is shut down. In the absence of water, the scale is loosened by manual mechanical vibration, and then cleaned by high-pressure water injection. In this way, work must be stopped. On the other hand, it is difficult to accurately grasp the strength of manual knocking, and it is easy to cause damage to the gate or water pipe due to excessive force. There are also some special cases of gate water pipes, which have defects such as construction difficulties.

Contents of the invention

The technical problem to be solved by the present invention is to overcome some problems existing in cleaning the scales of equipment such as gates or water pipe inner walls in the prior art. For example, when using high-pressure jet water for cleaning, if the flow rate is too fast, the pressure will be too high, which will damage the paint and structure. However, if the flow rate is reduced, the cleaning effect will be greatly reduced. Another example is that after the sluice shuts down, manual knocking is performed, but the strength is difficult to accurately grasp, and it is easy to cause damage to the gate or water pipe due to excessive force, and there are special areas. The gates or water pipes are not easy to construct. The underwater structure cleaning device and method designed by the present invention are convenient and efficient, have better cleaning effect, do not need to stop work, and have good application prospects.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

An ultrasonic cleaning device for underwater structures, including a power supply part and a cleaning part, the power supply part has two outputs, respectively connected to the cleaning mechanism through cables, and the cleaning part includes a cleaning mechanism and a The waterproof device for preventing the cleaning parts from entering water is characterized in that the cleaning parts include an ultrasonic cleaning device and a water jet cleaning device, and the ultrasonic cleaning device includes a connected ultrasonic electric energy generating device and an ultrasonic transducer device. The jet flow generating device includes a high-pressure water pump and a nozzle connected through a jet pipeline.

The aforementioned ultrasonic cleaning device for underwater structures is characterized in that: the ultrasonic electric energy generating device includes a signal generator, a power amplifier and an impedance matching module connected in sequence, and the ultrasonic transducer device includes a transducer and a focusing body module, the power input end of the transducer is connected to the power output end of the ultrasonic electric energy generating device, the ultrasonic input end of the transducer is connected to the ultrasonic output end of the focusing body module, and the ultrasonic focusing module includes A columnar piezoelectric transducer and a horn fixed together, the horn is arranged at the front end of the columnar piezoelectric transducer, the columnar piezoelectric transducer is composed of several piezoelectric sheets connected in parallel, and the The center of the column is set as hollow.

The aforementioned ultrasonic cleaning device for underwater structures is characterized in that: the waterproof device includes a casing and a heat-resistant insulating object exposed on the surface of the conductor, the exposed conductive part is sealed with hot melt adhesive, and the exposed non-conductive casing is used as a whole. It is wrapped with rubber, and the contact area between the shell and the conductive part is sealed and waterproof with hot melt adhesive.

The aforementioned ultrasonic cleaning device for underwater structures is characterized in that: the number of the plurality of piezoelectric sheets is four, and the piezoelectric sheets are made of ceramics.

The aforementioned ultrasonic cleaning device for underwater structures is characterized in that: the spray head includes several nozzles, and the nozzles are provided with a plurality of spray holes, and the number of spray holes decreases as the number of nozzles increases. the

An ultrasonic cleaning method for underwater structures, characterized in that: cleaning the underwater structures on the ultrasonic cleaning device comprises the following steps:

Step (1), first immerse the ultrasonic transducer device in water, focus the ultrasonic wave generated by the ultrasonic cleaning device through the horn in the ultrasonic transducer device, and control the focused ultrasonic wave to approach the water environment where the underwater structure is located;

Step (2), after the ultrasonic cavitation effect, destroys the insoluble dirt of the underwater structure;

Step (3), using the high-pressure water pump in the water jet cleaning device to generate high-pressure and low-speed water flow, forming a low-pressure and high-speed jet flow through the horn, washing the underwater structure after destroying the insoluble dirt of the underwater structure in step (2) , so that dirt off.

The beneficial effects of the present invention are: the transducer is used to convert the ultrasonic electric energy generated by the ultrasonic power supply into mechanical vibration, and radiate ultrasonic waves to cleaning objects such as gates or water pipes, so as to promote the formation of ultrasonic cavitation, and the huge pressure generated by cavitation can destroy the insoluble Dirt (such as scale and turbid matter), so that they are dispersed in the solution to achieve the effect of cleaning insoluble matter. The whole process can be carried out in a liquid environment, and the device has a good waterproof effect. The cleaning method of the present invention is produced by an ultrasonic cleaning device. After the ultrasonic waves are focused by the horn in the ultrasonic transducer device, the insoluble dirt is destroyed, and the low-pressure and high-speed jet formed by the high-pressure water pump in the water jet cleaning device washes the surface to be cleaned to make the dirt fall off. Compared with the method of percussion or single high-pressure water jet cleaning, the cleaning is convenient, efficient, and the effect is better, and there is no need to stop work, so it has a good promotion prospect.

Description of drawings

Fig. 1 is a schematic diagram of an ultrasonic cleaning device for underwater structures of the present invention.

Fig. 2 is the relationship diagram of the number of nozzles, striking force and jet flow area of the present invention.

The attached drawings have the following meanings:

1: Piezoelectric film; 2: Horn; 3: Input end of the power supply; 4: Nozzle.

Detailed ways

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

As shown in Figure 1, the ultrasonic cleaning device of the underwater structure of the present invention uses ultrasonic cavitation for cleaning. Cavities or bubbles are created in the liquid. These bubbles filled with vapor or air are in an unstable state. When they close suddenly, shock waves will be generated. Therefore, a great pressure is generated in a small local area, so that the accumulated sound field energy is quickly released in a very small space in the liquid, forming an unusually high temperature (up to 5000K or more), high pressure (up to 5x107Pa) and strong Extreme physical conditions such as shock waves and jets. In the present invention, the ultrasonic waves generated by the ultrasonic cleaning device are focused by the horn (focusing body) in the ultrasonic transducer device, and then enter the water to make the cavitation effect progress and destroy the insoluble dirt, and then pass through the high pressure in the water jet cleaning device The water pump generates high-pressure and low-speed water flow, which reaches the front end of the transducer horn through the space at the center of the horn 4 (focusing body), forming a low-pressure and high-speed jet, washing the surface to be cleaned, and making the dirt fall off. The synergistic effect of the two achieves cleaning Purpose.

The ultrasonic cleaning device for underwater structures of the present invention includes a power supply part and a cleaning part, the cleaning part includes cleaning parts, the input terminal 3 of the power supply part is a standard commercial power (220V/50Hz AC), and the output part is divided into two outputs, A 500W/28kHz AC signal is transmitted to the ultrasonic transducer, and a power supply for the high-pressure water pump is connected to the cleaning parts through cables. The cleaning parts include an ultrasonic cleaning device and a water jet cleaning device. The ultrasonic cleaning device includes The connected ultrasonic electric energy generating device and ultrasonic transducer device, the water jet generating device includes a high-pressure water pump and a nozzle connected through a jet pipeline, and a high-pressure water jet is generated through a high-pressure water pump, and the water jet is used to directly wash and peel off dirt, with no pollution , No corrosion, low cleaning cost. Water jet cleaning uses a high-pressure water pump to pump out high-pressure water, and passes through the jet pipeline to the nozzle, converting the high-pressure, low-velocity water into a low-pressure, high-velocity jet, and then the jet continuously acts on the surface with its high impact kinetic energy. The surface to be cleaned, so that the dirt will fall off, and finally achieve the purpose of cleaning.

The nozzle 4 includes a number of nozzles, the nozzles are provided with a plurality of nozzle holes, and the number of nozzle holes decreases with the increase of the number of nozzles, the nozzle is the most direct executive part of the high-pressure water jet cleaning equipment, and the quality of the nozzle directly affects The performance and cleaning effect of the high-pressure water jet cleaning equipment, the relationship between the number of nozzles n and the striking force F and the jet area S are shown in Figure 2. When the cleaning part works under the rated pressure and flow state, as the number of nozzle holes increases , the flow rate at each nozzle hole decreases, the maximum jet impact force at the outlet of the nozzle hole and the jet area of each nozzle hole also decrease, but under the same jet target distance, the total jet area of multiple nozzle holes increases, and The increase of the number of nozzles has an approximately linear relationship with the decrease of the impact force of the nozzle jet and the increase of the jet area.

The ultrasonic electric energy generating device includes a signal generator, a power amplifier and an impedance matching module connected in sequence. The signal generator generates a corresponding ultrasonic signal, which is amplified by the power amplifier and then input to the matching module for matching, so as to achieve impedance matching with the power supply. , to ensure that the transducer obtains maximum power and efficiency. Among them, the signal generator adopts the form of single-chip DDS. MSP430F149 is used in single-chip microcomputer to control the work, stop, frequency and power of DDS. DDS uses integrated circuit, the model is SG3525, and the oscillation form of SG3525 is RC oscillation. The single-chip microcomputer changes the output frequency of DDS by controlling the value of R. The way to control R is to use a digital potentiometer. The model of the digital potentiometer is X9C102, and the output is two square wave signals with the same frequency and opposite phases. According to the needs of the signal input by the BTL circuit, a total of two signals of the same frequency and anti-phase are generated, so that the two power amplifier tubes are alternately saturated and cut off, and the power amplification task is efficiently completed.

The ultrasonic transducing device comprises a transducer and a focus module, the power input end of the transducer is connected with the power output end of the ultrasonic electric energy generating device, the ultrasonic input end of the transducer is connected with the ultrasonic output end of the focus module The ultrasonic focusing module includes a columnar piezoelectric transducer and a horn 2 fixed together, the horn 2 is arranged at the front end of the columnar piezoelectric transducer, and the columnar piezoelectric transducer is composed of several piezoelectric sheets 1 parallel connection, and the center of the column is set as hollow, the transducer generates ultrasonic waves under the drive of the ultrasonic electric energy generating device, the transducer and the focusing body module are fixed together, which can gather the ultrasonic energy and make the ultrasonic cavitation effect more effective Obviously, the cleaning effect on the structure is better, and the shape of the transducer is also very important to the present invention. Since the underwater structure cleaning machine integrates ultrasonic cleaning and water jet cleaning, the ultrasonic transducer The transducer and the high-pressure water jet channel must be realized in the same mechanical structure, so the selected transducer is shown in Figure 1, the number of several piezoelectric sheets 1 is four, and the piezoelectric sheets are made of ceramics, the vibration The direction is consistent with the flow direction of the water jet, and the placement direction of the two silver layers of the piezoelectric ceramic sheet is perpendicular to the direction of the water jet.

The ultrasonic cleaning of the underwater structure on the above-mentioned ultrasonic cleaning device comprises the following steps:

The first step is to submerge the ultrasonic transducer device in the water, focus the ultrasonic wave generated by the ultrasonic cleaning device through the horn in the ultrasonic transducer device, and control the focused ultrasonic wave to approach the water environment where the underwater structure is located;

The second step, after ultrasonic cavitation effect, destroys the insoluble dirt of underwater structures;

The third step is to generate high-pressure and low-speed water flow through the high-pressure water pump in the water jet cleaning device, and form a low-pressure and high-speed jet flow through the jet pipeline to flush the underwater structure after destroying the insoluble dirt of the underwater structure in the second step, Make the dirt come off.

Since the working environment of the entire washing machine is underwater, the waterproofing of machinery and power supply becomes a key issue. In order to be waterproof, the cleaning part is equipped with a waterproof device to prevent water from entering the cleaning parts. The waterproof device includes the shell and the heat-resistant insulating object on the surface of the exposed conductor. The exposed conductive part is sealed with hot melt adhesive, and the leaking non-conductive shell The whole is wrapped with rubber, and hot-melt adhesive is used to seal and waterproof the contact area between the shell and the conductive part. The cable is wrapped with insulating rubber, and melted glue is dripped at the interface to achieve the purpose of waterproofing.

The basic principles, main features and advantages of the present invention have been described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. the ultrasonic cleaning equipment of construction under water; Comprise power unit and cleaning part; Said power unit is two-way output; Be connected with said cleaning parts through cable respectively, said cleaning part comprises that cleaning parts prevents to clean the water-tight device that parts are intake with being used to, and it is characterized in that: said cleaning parts comprise ultrasonic cleaning equipment and water jet cleaning device; Said ultrasonic cleaning equipment comprises ultrasonic wave electric energy generation device and the ultrasonic transduction device that is connected, and said jet generating device comprises high-pressure hydraulic pump and the shower nozzle that is connected through the jet pipeline.

2. according to the ultrasonic cleaning equipment of claims 1 described construction under water; It is characterized in that: said ultrasonic wave electric energy generation device comprises signal generator, power amplifier and the impedance matching module that connects successively; Said ultrasonic transduction device comprises by transducer and focusing phantom piece; The power input of said transducer is connected with the power output end of ultrasonic wave electric energy generation device; The ultrasonic wave input of said transducer is connected with the ultrasonic wave output that focuses on the phantom piece, and described ultrasonic wave concentrating module comprises column PZT (piezoelectric transducer) and the horn that is fixed together, and said horn is arranged on the front end of column PZT (piezoelectric transducer); Said column PZT (piezoelectric transducer) is composed in parallel by some piezoelectric patches, and is made as the column center hollow.

3. the ultrasonic cleaning equipment of construction under water according to claim 1; It is characterized in that: said water-tight device comprises shell and exposes to the high temperature insulation object of conductive surface; The current-carrying part that exposes adopts the PUR sealing; The non-conductive shell integral body that exposes is wrapped up with rubber, and adopts the PUR water-tight at shell and current-carrying part contact area.

4. the ultrasonic cleaning equipment of construction under water according to claim 1 and 2 is characterized in that: the quantity of said some piezoelectric patches is four, and piezoelectric patches adopts pottery to process.

5. the ultrasonic cleaning equipment of construction under water according to claim 1 is characterized in that: said shower nozzle comprises several nozzles, and said nozzle is provided with a plurality of spray orifices, and the quantity of spray orifice increases and reduces along with nozzle quantity.

6. the ultrasonic cleaning method of construction under water is characterized in that: carry out on said ultrasonic cleaning equipment under water that the cleaning of construction may further comprise the steps,

Step (1), earlier the ultrasonic wave transducer device is submerged in water, the horn of ultrasonic wave in the ultrasonic transduction device that ultrasonic cleaning equipment is produced focuses on, and the ultrasonic wave after control focuses on is near the residing water environment of construction under water;

After step (2), the process ultrasonic cavitation effect, destroy the insoluble dirt of construction under water;

Step (3), produce the high pressure low speed water through the high-pressure hydraulic pump in the water jet cleaning device, form the jet of low-voltage high speed through the jet pipeline, the said destruction of rinsing step (2) is the structure under water behind the insoluble dirt of construction under water, and dirty thing is come off.

Images