Manual hydraulic press for crimping pipelines
Manual hydraulic press or pump for crimping pipelines is used to conduct hydraulic tests of communications, as well as various containers. The environment can be any: water, antifreeze, hydraulic oil, etc.. D. Pressing machine, usually, is equipped with a manometer, which measures pressure and hose. A hose is required to connect the device to the tested system.
A manual press is required for hydraulic testing of pipelines for various purposes
Areas of use of manual hydraulic press
Such devices are used to, determine the integrity of a communication. Moreover, the inspection can take place on a separate site, and throughout the system. Consider the basic communications, which are checked by means of the pressing pump:
- plumbing;
- heat pipes;
- sewer pipelines.
The use of this device may be as follows:
- hydraulic inspection is performed before, how to put into operation the newly installed communication. Depending on that, what material is the pipeline made of, the main vulnerabilities in the system are identified. Plastic communications are often mounted using special connecting elements - fittings, and individual parts of metal structures are joined by welding or threading. Connection locations, regardless of the material of communication, are considered prone to leakage;
- hydraulic testing is also performed to identify potential vulnerabilities in the system. Places, who are more likely to form a leak, detect quite simply. With the help of a manual hydraulic press create such pressure in the tested system, which will be above the maximum working. If the pipeline can withstand high pressure for a certain period of time, it is possible to draw a conclusion, as at normal pressure, it will last long enough;
- exept this, such checks are mandatory after the repair of the communication. This is necessary for that, to check, how well the system was repaired;
Hydraulic inspection is carried out regularly, it allows you to detect problems in the system and prevent accidents
Importantly! After installation of the new equipment or other auxiliary accessories it is also necessary to carry out hydraulic tests of pipelines.
- there are preventive measures, which are aimed at identifying the degree of wear of pipes in a particular communication. Periodic hydraulic checks are especially relevant for metal pipelines. It has to do with that, that over time, such structures are subject to corrosion, which lead to deterioration of their walls.
Advantages and disadvantages of manual hydraulic press
Like any other product, manual hydraulic press has its advantages and disadvantages. To begin, consider the main advantages of this device:
- mobility. The device is quite compact, which allows to transport it to any necessary place and to make hydraulic tests on a place;
- under normal operation has a fairly long service life;
- if necessary, it can be repaired and used for its intended purpose;
- operation of such device is completely safe;
- there are hydraulic presses for crimping pipelines quite cheaply, which is often the determining factor.
The disadvantages of manual hydraulic press for crimping pipelines include:
- the device does not have a limiting valve;
- when the device is operating, it is necessary to exercise constant control over it;
- achieving the desired pressure in the system is a long process when using a hand-held device;
- hand-held device is less versatile, than its electrical counterpart;
- it is necessary to make physical efforts.
The compact size of the hand-held device allows you to easily work in the home
Features of a manual press
Almost all models of devices, crimping is self-priming. This means, that they can absorb liquid. To do this, a hose, which is included in the design of the extruder, immersed in the pumped liquid. For, to simplify this process as much as possible, many models are equipped with a special tank.
Useful Information! Indicators of operational pressure of such devices, usually, are no more 50 MPa (500 atmospheres).
The most compact manual models are used for quick pressure testing, as well as tightness in different systems. exept this, there are manual crimpers, used in various industries. They inspect various industrial equipment (example, boilers). Such inspections are carried out in three stages:
- The first step is to pre-fill the inspected pipeline or other facility.
- Next, a manual hydraulic press for crimping pipes performs pressure injection.
- At the last stage, the pressure drop in the pipeline is monitored. Pressure control is carried out by means of the manometer or visually (if there are visible leaks).
Handmade models are quite popular, as their use is practically not limited. They can be used to organize tests of business networks, as well as to check the communication in a multi-storey building.
The device is equipped with a manometer, by means of which pressure control is carried out, pumped into the pipeline
One important advantage of using a hand press is the low level of error. This advantage is due to the fact, that the press operator himself regulates the pressure during the pipeline test. Hoses of such devices at the stage of production are equipped with a protective braid, which eliminates the possibility of expanding the pressure hose.
General device of the manual pump for pressing
The hand-held device consists of the following elements:
- control tool (pen), which is necessary to inject pressure in the system;
- container with liquid;
- pressure gauge, measuring pressure;
- hose - for connection to the tested pipeline;
- frame.
Manual hydraulic presses are made, usually, of steel. In some cases, high-strength composites are used as the material of manufacture. If you decide to buy a hand press, it is recommended to pay attention to its weight. It has to do with that, that there are different operating conditions for such a device and some of them have limitations on this indicator. The most common are hand crimpers, which weigh from 5 to 7 kg.
exept this, all manual models are divided into three types:
- piston (single-stage and two-stage);
- plate-rotor;
- membrane.
The principle of operation of a manual hydraulic press
For, to hold such an event, as a hydraulic test of the pipeline, first of all it is necessary to fill the closed site with liquid. After, as the liquid reaches the maximum circuit, the operator must start monitoring the pressure readings.
Connection of the pump to the already assembled and ready to operation system
Usually, the pressing operation lasts several hours. From the beginning to the end of the process it is necessary to ensure the proper functioning of the manual hydraulic press. After, as the required time period is passed, repeated measurement of pressure in the tested system is carried out. The final measurement is compared with the initial data and on this basis the integrity of the system is determined.
pay attention! The range of crimping machines is incredibly wide. The choice of a particular model depends on it, what kind of network they will feel. For each communication it is necessary to select the device with the corresponding pressure range.
If after the test the previous pressure measurement does not converge with the finish, then in this case it is possible to carry out repeated test or to start repair of communication at once.
How to choose a pressing machine
To date, there are a huge number of different models of the press. Manual hydraulic crimping machines are produced by many well-known companies. When choosing them, it is recommended to pay attention to two important factors:
- the amount of tested communication;
- how often inspections will be carried out.
Manual models of hydraulic presses are much simpler, from a constructive point of view, and are an order of magnitude cheaper than electrical counterparts. However, the simplicity of design and manual control also affects the rate of pressure in the system. In comparison with electropressors, manual models inflate the required pressure for much longer.
A pump is enough for domestic use, able to pass 2-3 liters of water per minute
Operating time of the device, and the accuracy of the test results depends on the power of the model. Devices with low power stretch the test time, and if there is a leak in the system - this will affect the accuracy of the result. Therefore, it is recommended to use powerful devices for systems with a large volume of liquid, who are able to perform the necessary work in a short period of time, which will allow you to get the most accurate results.
A device will be enough for a home pipeline, who will be able to pass through himself 2-3 liters of fluid per minute. And hydraulic tests of main pipelines require the use of circulating pumps.
How to make a press with your own hands?
If necessary, a manual compactor can be performed independently. Appropriate spare parts will be required to assemble such a device, which will be able to cope with the functions of a manual press for crimping pipelines. Old jacks are well suited for this purpose, capacity will also be required (preferably cylindrical in shape).
It is recommended to assemble the individual elements using threaded connections. Be sure to make several holes in the tank for the meter and the drain hose.. If desired, you can assemble your own electric press, however, such a device is unlikely to be highly accurate.
