But tank cleaning is a complicated, not easy to understand process. The relationships we have with our customers are the foundation a clear picture of your specific situation and what cleaning goals you want to achieve. Job Title: Technical Sales - Chemical Tank Cleaning Robotics relationships with the Tank Owner End Users, with the ultimate goal of. We also clean tanks and work hard to restore fuel to its “clear and bright” pristine At Tank & Fuel Solutions, LLC, our goal is to provide superior services to industries of all kinds so we can build customer relationships that will last for years.
To get the best cleaning results, the perfect circumstances have to be created. When the results are below our expectations, it is hard to figure out what went wrong. Sometimes we even seem to forget what tank cleaning is all about. Or a chemical cleaning product is needed because the residues have to be removed. As a supplier there is nothing more important to us then the satisfaction of our customers. The relationships we have with our customers are the foundation stonesof our business and our commitment is to continue to provide products that improve their tank cleaning processes, both now and in the future.
But when a product is ordered, we do not always have all the information that is needed to make sure the right product is available for the current circumstances. For example, we do not always know what previous cargo you have been carrying or what your next cargo will be?
What temperature you will wash at, or which types of cleaning machines you have on board. All these factors directly influence your cleaning process. You also have to understand why you use a certain product.
The following factors are important when it comes to create the perfect circumstances: Cleaning standards Of course the most important factor is the cargo you want to load and the previous cargo you have been carrying. This also determines the cleaning standard. Do you have to load palm oil into a tank where you already have been carrying palm oil?
The cleaning procedure is quite easy. Do you want to load medical ethanol into a tank you have been carrying vegetable oils in? The cleaning procedure is much harder because you have to clean to the highest standard.
The use of a cleaning chemical is in many cases necessary to achieve the right level, certainly when you have to deal with high cleaning standards. High quality products There is probably no need to say that the higher the quality of the chemical you are using, the better and the faster your cleaning standards will be accomplished. You can recognize a high quality cleaning chemical by the number of active components they contain.
Low frequencies generate large but relatively few cavities with high cleaning power. High frequencies generate a great number of small cavities with good penetrating capability.
The selection of the correct frequency is difficult, for it varies with each cleaning application. The frequency also affects degassing, with 40 kHz nearly optimum. Cleaning efficiency is also affected by the chemical and physical characteristics of the liquid. For best cleaning, the liquid must chemically soften the soil, yet maintain effective cavitation and provide the desired characteristics for rinsing and drying the cleaned parts.
Ultrasonic cleaning solutions are broadly characterized as aqueous or non-aqueous. Final selection is dependent upon the overall process considerations for the cleaning application. The ultrasonic energy is created within a liquid by means of transducers, which convert electrical energy into acoustic energy.
These transducers are similar in function to a radio speaker except they function at ultrasonic frequencies 40, Hz and transmit acoustic energy to a liquid rather than to air. The transducers consist of vibrating elements piezoelectric disc bolted between thick metal plates. The transducers are bonded to the underside of the tanks containing the cleaning liquid or are encased in stainless steel for immersion within a liquid.
The basic principles of tank cleaning
For reliability, many transducer modules are uniformly distributed over the tank bottom rather than having a single transducer in the center of the tank working very hard. An electronic generator energizes the transducers.
The generator transforms the electrical energy from the wall outlet into a suitable electrical form for efficiently energizing the transducers at the desired frequencies. All ultrasonic cleaning systems consist of the four fundamental components; transducer, generator, container for liquid, and cleaning liquid.
The performance and reliability of the system depends upon the design and construction of the transducers and generators.
Ultrasonic Cleaning Technical Information | Ultrasonic Power Corporation
The overall effectiveness of the cleaning is dependent upon the cleaning liquid. The size of the tank is dependent upon the size or quantity of the parts being cleaned. The number of transducers and generators is determined by the tank size. The choice of cleaning liquid depends upon the parts being cleaned and contaminant to be removed. In addition, immersible transducers can be built to be used within existing installations or where application flexibility is required. Ultrasonic power corporation facilities provide one source for all phases of industrial ultrasonic equipment.
This experience and ability is available for field assistance on ultrasonic cleaning equipment applications.
The higher frequencies, with their greater penetrating capability, initiate the cleaning by loosening soils in inaccessible areas, such as tapped holes and undercuts. This allows the heavy duty lower frequencies to rapidly and thoroughly complete the cleaning operation.
The presence of more than one frequency also reduces the probability of damage to frequency sensitive parts, as it avoids the single strong resonance found in conventional ultrasonic tanks. The cooperating effect of many frequencies insures constantly uniform and thorough cleaning. This causes complex vibrational modes, which creates more than one frequency in the cleaning bath. This is similar to the creation of various resonant frequencies by vibrating a rectangular, rather than circular, drumhead.
The dominant frequency is 40 kHz, but significant energy is produced at other higher frequencies. Another important UPC advantage is the elimination of undesirable standing wave patterns, which are always present in conventional single frequency ultrasonic cleaners.
Relationship Goals - Tank - VAGALUME
Because of the coexistence of frequencies with many different wavelengths, UPC equipment provides extremely uniform energy distribution throughout the entire fluid volume. So called "dead" spots simply do not exist with UPC ultrasonic equipment. Degassing is also efficient with UPC equipment because of the presence of the dominant frequency of 40 kHz. Power intensity control To further increase the versatility of UPC equipment, an adjustable output power control is on all model and series generators.
The adjustable output power control provides maximum flexibility over a wide range of cleaning applications. It also maximizes the equipment performance when used for solution degassing. Modulation sweep control This generator has the ability to perform in a variety of aqueous and semi-aqueous cleaning chemistries. Sweep rate is how fast the output sweeps between 38 to 42 kHz. On the front panel of the generator on the right hand side there is a control that controls the sweep rate Hz to Hz.
Turn clockwise to increase sweep rate.Tank- Relationship Goals (Lyrics)
For most aqueous solutions the sweep should be set in the full counter clock-wise position Hz. For more viscous solutions and various hydrocarbon-based solutions the sweep typically should be set at full clockwise position Hz, high enough to reach peak cavitation performance. Certain applications will deviate from these standard sweep rate settings. These standard modules are used throughout the entire product line, thereby eliminating "one time untried designs".
Required production tooling and facilities have been engineered to insure consistent product quality control. Spreading out from the standard module base are system designs and fabrication that are the result of years of specific field experience in ultrasonic cleaning applications. Reliability is obtained by the elimination of any adhesive in the active stack. The active stack consists of a piezoelectric PZT element bolted between backing plates.
The absence of adhesive means the PZT element is "free" to vibrate or distort in any direction. In other designs, the PZT element is clamped in the stack by means of an epoxy adhesive, which prevented the element from movement in more than one direction. Because of the vibrational patterns and differences between the coefficient of expansion of the piezoelectric element and the clamping metals, the adhesive designs cause stresses to be built up in the element, which in time create cracking and failure.
The UPC design eliminates adhesive in the stacks by optically polishing all mating surfaces and employing a single center bolt to provide the required clamping.
Resiliency and ability to maintain constant compression under all conditions of vibration and temperature is obtained by the compression washers located under the bolt head. To increase reliability, the center bolt is stainless steel. Each stack utilizes only a single PZT element and single center bolt, thus providing increased reliability over designs with several PZT elements and bolts. The PZT element is relatively thin and under compression, which results in a strong structure. The PZT is similar to concrete in that by itself it tends to be brittle, but under compression, it is one of the strongest materials.
The UPC formulation has special additives to obtain low dissipation, high density, and low porosity, resulting in improved performance, negligible aging and reliability.
The special formulation and pre-aging eliminate any of the previous difficulties with PZT elements, such as changing characteristics after field usage. The field aging of the UPC elements is less than 1 percent. This means that the PZT elements do not have to be critically matched.
Generator reliability The reliability of the individual modules is obtained by the simplicity of the design where only a minimum number of components are employed. The UPC design has only about one third the components of similar competitive designs. Also, the design is such that no critical matching or alignment is required. The design employs all solid-state components, further insuring reliable operation.
The frequency of the generator does not have to be critically matched to the transducer.