A modern inflatable boat made of NDMA The low pressure inflatable floor is a complex engineering structure where each element plays a critical role in safety and comfort. It takes a considerable pressure of 250-300 mbar to pump these cylinders, and especially a hard bottom, which is extremely difficult and time-consuming to do manually. pump-pump It becomes not just an accessory, but a must-have equipment for any owner of a boat, who appreciates his time and physical strength.
The use of specialized equipment allows not only to quickly prepare the boat for launch, but also to ensure that the pressure is evenly distributed throughout the compartments, which directly affects the performance. Unlike older models of boats with plywood piels, the design of NDNDM requires a more delicate but powerful approach to pumping. Mistakes in the choice of device can lead to damage to the valves or, conversely, to a failure that turns swimming into a test.
The boating market offers many solutions, from compact foot models with electric drive to full-fledged two-stage turbines. productivity And the maximum pressure, which is necessary before the purchase, so as not to face unpleasant surprises on the shore of the reservoir, in this article we will discuss in detail all aspects of the selection, connection and operation of electric pump systems for inflatable boats.
Features of the design of the boats NDND and requirements for pumping
The main feature of low-pressure inflatable boats is that they have a well-developed system of internal bulkheads that create a rigid pumping structure, and unlike the classic flat-bottom boats, they require a keelson that will keep its shape and protect against impacts on the bottom. electric pump It must provide stable high pressure, often exceeding the capabilities of simple car compressors.
The pumping process is usually divided into two phases: primary filling with a large volume of air and final filling to the working pressure. productivity In the second step, the key is the ability of the motor to overcome the increasing air resistance inside the chamber without overheating.
⚠️ Warning: Never try to get the cylinders to the working pressure with one continuous cycle of operation of a cheap car compressor – this is guaranteed to overheat and fail after 10-15 minutes of operation.
It's important to remember that PVC material gets hot when pumped, and the pressure inside the cylinders increases. If you're using a powerful electrical unit, you need to monitor the temperature of the valves and the tissue itself. supercharger has a system of protection against overheating or operates in a pulsed mode, which allows you to safely achieve the necessary indicators in 250-300 mB.
When pumping the boat in the bright sun, leave a margin of pressure of 20-30 units, as in the heat the air will expand and the pressure in the cylinders will increase, which can lead to rupture of the seams.
Criteria for choosing an electric pump: power and type
The choice of the right device is based on several key parameters, the neglect of which can negate all the benefits of electrification of the process. First of all, you should pay attention to the type of device: it can be a piston compressor or a turbine (pump) supercharger. turbine models They are often preferred due to their ability to create a powerful air pressure.
The second critical criterion is power supply, and most models are powered by a 12-volt onboard network, which is convenient for connecting to a boat or car battery. lithium-ion batteriesThe engine power in these devices must be sufficient to maintain high pressure throughout the pumping cycle.
Also consider the noise level and dimensions of the device. Powerful models can be quite noisy, which creates discomfort in a quiet nature. Compactness is important for placing in the boat's locker with the rest of the equipment. Bravo, Valmex, Bombard) is a prerequisite.
When choosing, consider the presence of a pressure gauge. Although many modern electric models are equipped with automatic shutdown when a given pressure is reached, the presence of visual control is never superfluous. Automation. It can fail when the temperature changes or the battery is discharged, so the possibility of manual check remains relevant.
Comparative analysis of popular pump models
There are many brands on the market, from low-end Chinese counterparts to professional European equipment, and the leaders of the segment are often companies specializing in water transport, such as water transport. Intex, Bestway, Bravo and PumpEach of these brands offers its own technological solutions, targeting different boat classes and user budgets.
Small boats up to 3 meters long are often quite compact models with a capacity of about 300-400 liters per minute. For full-fledged three-four-meter boats NDNDND, where the air volume is high and the pressure required is high, more serious units are needed. They are able to produce 500-700 liters per minute and work without a break of 20-30 minutes.
| Model | Type | Max. pressure (mBar) | Productivity (l/min) | Nutrition |
|---|---|---|---|---|
| Bravo BTP 12S | Turbine | 180 | 420 | 12B |
| Pump-1 High Pressure | Piston | 350 | 150 | 12B |
| Intex Quick-Fill | Turbine | 130 | 570 | 12B/220B |
| Seahorse SEB-950 | Turbine | 200 | 380 | 12B |
Analyzing the table, you can see that piston models often win at maximum pressure, but lose in volume filling speed. Turbine models, on the contrary, fill the cylinders very quickly, but may require final "refilling" manually or more powerful device to achieve the maximum values required by the hard bottom of the NDNDM.
⚠️ Note: When buying, pay attention to the length of the power cord. Standard 2-3 meters are often not enough to reach from the transom or the nose of the boat to the battery located in the trunk of the car or under the seat.
Connection schemes and catering
Correct connection electric pump Most of the devices are equipped with crocodile clips to connect to the terminals of the battery.+), black to minus (-An error in connection may result in the combustion of the fuse or the pump engine itself.
If you plan to use a boat away from the car often, it makes sense to purchase an additional traction battery. Starting car batteries are not designed for long-term energy output in low currents, they are designed for short-term powerful pulse. AGM or GEL Deep discharge batteries.
☑️ Checking before connection
For ease of use, many owners install a special socket on the boat or in the kunduk, connected directly to the battery through a fuse, which eliminates the need to tinker with "crocodiles" every time, which eventually oxidize and begin to warm up.
If you use high-power models that consume more than 15-20 Amps, it is recommended to periodically check the temperature of the wires and contacts. If you feel strong heating at the connection of the crocodile with the terminal, then the contact is poor and you need to clean or replace it.
Safety and operating rules
Operating electrical equipment near water requires strict safety precautions. Although modern pumps have spray protection, full immersion in water or working in heavy rain can be dangerous. Always try to place the device so that water does not enter the air intake holes, which are often located at the bottom of the housing.
Special attention should be paid to continuous operation time. Even the best models are not designed to operate in 24/7 mode. The instructions usually indicate a cycle of work, for example, 20 minutes of work and 10-15 minutes of rest. Neglecting this rule leads to melting of plastic gears or burning of the engine winding.
What to do if the pump stops pumping?
If the pump is buzzing but the air is not flowing, check the cleanness of the filters and the absence of hose bending. If the motor is silent, check the fuse in the wire or on the battery terminal. Often the problem lies in oxidized contacts.
Storage is also important. After use on a body of water, especially salt, it is recommended to wipe the body with a wet cloth to remove salt and sand. Sand trapped in the turbine mechanism acts as an abrasive and quickly disables bearings. It is better to store the pump in a dry place, separate from chemicals and gasoline.
Compliance with the cycles of operation and rest of the pump extends its service life by 2-3 times and ensures that the device does not fail at the most inopportune moment on fishing.
Maintenance and extension of the service life of the device
Regular maintenance allows you to maintain productivity The pump is high, and the first thing you need to do is to keep the air filters clean if they're designed, and if you're clogged with dust or down, you create additional resistance, and you get the engine to work with overload.
Once a season, it is recommended to lubricate the moving parts of the mechanism, if required by the manufacturer's instructions. For plastic gear turbine pumps, special silicone lubricants are used that do not corrode the plastic. Using inappropriate oils can lead to the destruction of parts.
Checking the tightness of the joints is another important point: over time, rubber seals can dry out and the screws of the mounting of the case can weaken from vibration. Periodic stretching of the fastener and visual inspection of the housing for cracks will help to avoid sudden breakage during collections for water.
⚠️ Warning: Do not attempt to disassemble the pump body if the device is warranty-free. Opening the seals will result in the loss of the manufacturer's warranty obligations, even if the breakdown is not related to your intervention.
Frequently Asked Questions (FAQ)
Can I pump a NDND boat with a car compressor?
In theory, it is possible, but it is highly recommended for regular use: Automotive compressors are not designed for long-term operation under high pressure and quickly overheat. For NDNDM, it is better to use specialized two-stage or turbine models.
What pressure is considered optimal for the bottom of the NDND?
The pressure range of 250-300 mB (0.25-0.3 atm) is considered optimal. The exact value is always indicated in the passport of a particular model of boat. Insufficient pressure worsens driving performance, and excessive pressure can damage the seams.
Why does the pump heat up during operation?
Heating the case is a natural process of compressing air and running the electric motor, but if the device gets so hot that it can not be held in your hand, or there is a smell of burning, work should be stopped immediately, this is a sign of overload or malfunction.
Can a power bank be used to power the pump?
Conventional power bank phones are not suitable, as they produce 5-12 volts at low current, and pumps need 12 volts and 10-20 amperes. There are special high-voltage power banks for auto-run, but their capacity is only enough for 1-2 boats.