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Hydraulic equipment piping nondefective, can be seen at work for some time, the prosecution is not a leak, the pipe is not loose.

Attention should be paid within three months of work (11) The new machine work

During the period the new machine work, the work should grasp the view, such as maintenance parts, screws are not loose, oil is not there does not rise to normal hydraulic oil is not quickly deteriorate to view the condition of use is not consistent with the provisions Wait.

Pump

: Replace the pump shaft seal qualification.

Joked the hydraulic system of the three ills: "fever, diarrhea with Joseph"

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????Hydraulic fittings often used this piece for you, be sure to know what the three ills of the hydraulic system? Not that heat, vibration, leak it? Yes, that's right! But some industry veterans did so nicknamed the hydraulic system of the three ills ----- "fever, diarrhea with Joseph," Hey, you will not laugh a earthshaking listened to it?

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A fever

As a result of the flow rate of the different parts of the force-transmitting force medium (hydraulic oil) present in the flow process, resulting in the liquid inside certain internal friction, there is also friction between the liquid and the pipe wall, these are the result of hydraulic oil temperature the main reason. Temperature increase will cause internal and external leakage, reduce its mechanical efficiency. At the same time due to the higher temperature, hydraulic oil expansion will occur, resulting in compression increases, the control action can not very well delivered.

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What is the solution? ------ Fever is an inherent feature of every mechanical operation of the hydraulic pump station system can not be avoided, it can not be eliminated but it can minimize: Use good quality hydraulic oil, hydraulic piping arrangement should be secluded Free The emergence of the elbow, using high-quality tubing and fittings, hydraulic valve.

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Second, vibration

Hydraulic vibration system is also one of its ills. Due to the impact of the hydraulic oil in the pipeline and a high-speed flow generated by the impact of opening the control valve is closed during the generation of vibration phylogenetic reasons. Strong vibrations may cause the system to control the motion error occurs, the system will also make some of the more sophisticated equipment error occurs, causing the system failure.

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Workaround: Hydraulic lines should be fixed to avoid sharp bends. Avoid frequent changes in flow direction, damping measures can not be avoided should do. The entire hydraulic system should have good damping measures, but also to avoid the influence of external vibration source on the system.

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Third, leak

Hydraulic system leak into the leakage and external leakage. It refers to the process of internal leakage leakage occurs within the system, such as a hydraulic cylinder piston on both sides of the leak, the leak valve control valve between the arts and the like. Although no loss of internal leakage of hydraulic oil, but because of a leak, the established control action may be affected, and even cause the system to malfunction. Refers to external leakage occurs between the system and the external study mirrors leaks. Direct hydraulic oil leaking into the environment, in addition to the system will affect the work environment, it will also cause the system pressure is not enough malfunction. The risk of leakage to the environment as well as fire hydraulic oil.

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The solution is usually: use high-quality seals, improve the precision of the device. For hydraulic systems of these three illnesses, it was summarized: "fever, diarrhea with Joseph"

Installation of hydraulic pump manufacturers _ hydraulic pipes should pay attention to what?

Hydraulic piping installation requirements:

Hydraulic station equipment installation project is the installation of a main hydraulic pipes. One of the key properties of the hydraulic system is normal that the pipe installation is good or bad quality.

1, piping design and pipe should be based on hydraulic schematic diagram of the components required for connection, pipe fittings, hydraulic components, flange to make a comprehensive consideration.

2, the direction and laying the pipeline should be neatly arranged in a consistent, structured. Maximize the use of vertical or horizontal piping, not vertical degrees vertical pipe should be ≤2 / 400, not parallel horizontal pipe should ≤2 / 1000; detection method with a spirit level.

3, a cross between a parallel or piping, there should be more than 10mm gap.

4, configure the pipeline must make hydraulic valves, piping and other components handling, easy maintenance. Any component or piping system should be able to freely removable without affecting the other components.

5, when the pipe so that the pipe must have a certain degree of anti-vibration and rigid capacity. Properly configured pipe clamps and pipe supports. Bent pipe bracket or pipe clamps should be located near the starting point of inflection. Not with a stent or conduit pipe clamps welded directly.

6, should not bear the weight of the pipe by the hydraulic valves, hydraulic pumps and other hydraulic components and accessories; nor shall a heavier element weight bearing pipes.

7, a longer pipeline must consider effective measures to prevent temperature changes caused by stress telescopic tube.

8, the pipe material used must have a clear basis of raw materials, for unknown pipe materials are not allowed.

9, the hydraulic system in the available wheel 50mm diameter tubes following cutting machine. 50mm diameter pipe above general machining methods should be used to cut. As with gas cutting, machining methods must be used due to changes in the car to gas cutting formed part of the organization, while the car out of the welding groove. In addition to the return line, the pressure pipe is not permitted by the squeeze roller cutter cutting. Pipe cutting surface must be flat, deburring, descaling, slag and so on. Cut surface should be perpendicular to the tube axis.

10, a pipe routing multistage pipe and fittings shall be composed of piecewise turn over, completed a period, after assembly, and then configure the subsequent period, in order to avoid a complete welding cumulative errors.

?11, in order to reduce local pressure loss, pipeline segments to avoid a partial sectional dramatically expand or narrow and sharply bent.

12, tube and pipe fittings or flange connection must be a straight pipe, that this should be the axis of the pipe fittings, flanges axis is parallel to coincide. This line segment length is greater than or equal to 2 times the diameter.

13, the outer diameter of less than 30mm of pipe can be cold-formed method. Pipe diameter can be cold-formed or bending method at 30 ~ 50mm. When the pipe diameter greater than 50mm, bending method generally used.

14, welders welding hydraulic pipes should have a valid high pressure pipe welding certificate.

15, welding process selection: acetylene gas welding of carbon steel is mainly used for general 2mm wall thickness of less than or equal tube. Arc welding is mainly used for carbon steel pipe wall thickness greater than 2mm tube. TIG welded pipe is best to use. Pipe wall thickness greater than 5mm backing should adopt welding, arc welding filled. Necessary occasions should be used to protect gas pipe hole filling method of welding.

16, the electrode, the welding flux should match the pipe, the grade must have a clear basis of information, product certification, and the effective use period. Welding, flux before using the instructions provided its products should be dried and kept dry during use, for use in the same day. Electrode Coating should be no loss and significant cracks.

17, a pump station pipe welding should butt welding. Before welding groove and its vicinity should be 10 ~ 20mm wide at the surface dirt, traces of oil, water and rust, etc. cleaned.

18, welded pipe and flange should butt welding flange, non-use plug-in flange.