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Chemical loading system solution

2015-08-25View Original

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The design institute only required a loading system but did not provide a specific plan; now we intend to develop one on our own, so we would like to seek advice from the experienced professionals here. Requirements: 1. Achieve interlocking of the pump and valve through an overflow switch. 2. The static electricity system must be interlocked with the pump; the pump cannot be started without a static electricity clamp in place. 3. The flow rate needs to be controlled – filling at too high a speed is not allowed when gasoline is present in the medium. Everyone, let’s see if there’s any good way to solve this
Reply #22015-08-25
2. The static electricity system should be interlocked with the pump; the pump cannot be started without a static electricity clamp. This is easy to solve – just provide an open circuit for electricity flow.
Reply #32015-08-25
Just hand over the entire loading system to a manufacturer that provides complete solutions. Find a company with the capability to have worked on projects for the major oil companies; go and see firsthand how their loading systems work, and then consider what kind of system you need. You must take into full account the size of your location, as well as the staffing and management requirements.
Reply #42015-08-25
A complete collision system should include an on-site quantitative controller, flow meters, temperature sensors, two-stage electro-hydraulic valves, static grounding clamps, overflow switches, a static/overflow alarm box, and loading management monitoring software. The flow meter, temperature sensor, and electro-hydraulic valve are connected directly to the dosing controller. The static grounding clip and overflow switch are first connected to the static/overflow alarm box, from which they are then connected to the dosing controller (in effect, 2 contacts are used for this connection). To control the start and stop of the pump, two contacts must be output from the quantitative controller and connected to the electrical circuit of the pump in order to regulate the on and off state of the power supply circuit. When the static grounding clip is attached, the contacts inside the alarm box activate; the controller outputs a signal opposite to that in normal conditions, thereby controlling the pump to start. The switching of the electro-hydraulic valve is controlled by turning the power on and off to its two 2/3-way solenoid valves. Controlling the loading speed is essentially controlling the flow rate. The flow rate is controlled by the valve opening, with PID control implemented in the controller. When looking for a manufacturer of loading systems, they usually take care of all these tasks for you (wiring, configuration, debugging).
Reply #52015-08-25
We approached the manufacturer; the price for a set of 15W units was too high and they refused to agree to it, so we decided to handle it on our own
Reply #62015-08-25
The flow rate is related to the diameter of the loading hose and the pump head; this needs to be determined through process considerations, as it cannot be resolved simply with instruments. Nothing else is a problem; just consult a manufacturer with good performance records. Don’t worry, there are no technical challenges – everything is well-established. It is just recommended to use a batch controller rather than controlling directly with a PLC; this is based on experience. There are fixed methods and procedures for loading, which need to be in line with the factory’s management requirements and integrated together. The manufacturers of loading systems will recommend approaches for you; you just need to state your ideas and requirements.
Reply #72015-08-25
What is the actual price for a set?
Reply #82015-08-25
What do you mean by a set? What should be included? How many crane positions? What size hose? Load from below or from above? How many circuits can be loaded at the same time when loading onto the lower vehicle? Loading by car or by train? For trains, should it be a large duckbill hose or a small one? I can’t answer you!
Reply #92015-08-25
There’s only one loading position; the small factory has a very low production volume. It handles acrylic, and for transporting it to cars, ordinary tank trucks are used for loading

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