14.销售设备-xym-a型油封试验机

XYM-Atype oil seal tester

1.Overview

oil seal testing machine is the rootaccordingGB/T540-2008with the standard of "test method for oil-resistant asbestos rubber sheet", it has the characteristics of small and convenient, reasonable structure, stable performance and simple use, and can carry out the normal temperature oil sealing test of various non-metallic sealing gasket materials.

2. use

The test machine is mainly used for the oil-resistant asbestos rubber sheet at room temperature oil seal test, can be full.FootGB/T539-2008andGB/T540-2008standard requirements.

3. basic parameters

The testing machine consists of two pressure test pumps, the host and the pipeline connection system. The schematic diagram is as followsdiagram1InstituteShown:

1.electric pressure test pump:

type4DYA-25/40

Rated discharge pressure:40Mpa

flowquantity:high pressure25L/hlow pressure318L/h

high pressure plunger diameter:12mm

Motor:V90L-4 1.5KW

Dimensions:812*446*1043

Weight:185kg

2.pressure test pump:

typeSYL-7/25

Rated discharge pressure:25MPa

per flow:7.0ml

plunger diameter:18mm

plunger stroke:30mm

handle:360N

3.Host

cylinder:25Mpa

Piston diameter:130mm

Piston rod stroke:30mm

sample flange inner diameter:80mm

sample flange outer diameter:120mm

diagram1oil seal testing machine

4.Installation and Commissioning

make a high firstabout300mmcement table will be the host on the top, and then pressdiagram1the schematic shown. When connecting the pipeline, be sure to put the diesel copper gasket inside and tighten it at one time. in which oilpump1hydraulic oil, oilpump1375aviation gasolineor3steam injection fuel or aviation kerosene. After ensuring that all pipelines are connected, handhandle10Shake it, stick to the upper beam of the main machine, and put in the oil-resistant asbestos rubber sheet sample (the sample is annular, innerdiameter80mm, outsidediameter120mm) and closed pressure testpump1pressure relief valve, open the control valve, shake the handle, the piston will rise, press the sample tightly, and wait for the pressure to rise.14.2Mpa, stop the pressure, close the control valve, observe the pipeline and connection for leakage, if leakage, re-tighten, need to replace the gasket on the replacement of the gasket, until the pressure does not drop.

pressure testpump13on the other side of the host, pressdiagram1plate7are connected, and after the gasket is pressed (pump1pressure up14.2Mpa) in the same way.pump13medium(75aviation gasoline, etc.) press-in flangeplate7, the air release valve on the flange should be opened first. After the air is exhausted, tighten it and continue to shake it.pump13, when the pressure in the tubing reaches5Mpa, pause the filling medium, observe whether there is any leakage everywhere, if there is leakage, reconnect until there is no leakage. After eachpartition15minutes to increase the pressure of the medium in the oil pipe.liters1Mpa, wait for the pressure in the oil pipe to riseGB/T539-2008the pressure specified in the standard, close the valve, start recording the time, and observe whether there is leakage on the outer edge of the test piece at any time.,30minutes, open the valve to discharge the medium, then open the oil pump pressure relief valve to relieve the pressure of the test piece, and finally release the handwheel to take out the test piece.

Note: The leakage at the gasket is normal.

Special emphasis: every time the pipeline connection is removed, the internal pressure must be released first, otherwise the oil will spray out.

pressure test pump is shown in its instruction manual.

5.method of use:

1.This test method is to install the test piece on the autoclave flange body, keep it for a certain time under certain conditions, and observe its sealing performance.

2.Pre-tightening pressure calculation of test piece:

GB/T540-2008method30Mpa, the pressure on the test piece is:

P=300л/4(122-82)= 18840Kg

The piston diameter of this testing machine isBen130mm, test pressurepump1pressure3at preload pressure (pressure):

F=18840/(13π/4)= 142.01Kg/cm2=14.2Mpa

3, medium pressure:

According to the design characteristics of the system, pressure testpump13Connected pressuretable11is the medium pressure, as long as the test is upGB/T539-2008Standards Continuedtable4is sufficient.

4. Test methodGB/T540-2008medium oil tightness test method. (see pay page)

5. It should be specially noted that after the test, the pressure test should be opened first.pump13control valve, pressure relief valve (I. e. valveB), after the medium oil all flows back to the pressure test pump, then open the pressure testpump1valvesAturn the handhandle10, remove the sample and the pressure ring.

6. maintenance and maintenance:

1. The appearance of the pressure test pump and the working medium in the oil tank must be kept clean, and no dirt and other sundries are allowed.

2, the autoclave flange empty should be kept clean, no foreign debris.

3, often check the sealing of the pipeline connection, found that the leak, timely treatment.

4. Since the oil tank of the pressure test pump is flammable, the test machine should be stored separately, away from heat sources and no fireworks. 5, often add lubricating oil to the pressure test pump and piston rod to keep the surface of the test machine clean.