2D-SY-type (6.3-80MPa) electric hydraulic test pump is mainly used in all kinds of pressure vessels, oxygen bottles, pipes, valves, steam boilers, etc. for hydrostatic testing, I stress, and laboratory processing of new technology to obtain fluid pressure source equipment. Ministry of Machinery Industry General Machinery Research Institute test pump joint design team design of the latest series of products, it has the old products, "three", long life, stable performance, mobile and flexible, light weight, and in the Based on the increased transmission and cross-conversion, so that the integrated value of this series of products fully meet the requirements of a variety of stable and reliable performance, the use of more safe and convenient, while achieving the energy saving effect. In the product structure of a closed water tank, reducing the overall height, shape more compact appearance. This product is at 5 ° -60 ℃ of water, emulsion and viscosity of less than 45mm2 / s of the oil as the working medium and the specially designed pump working environment temperature: 5 ° -60 ℃. This series of test pump a total of seven models, the basic parameters such as: Model Rated discharge pressure MPa Flow L / h high pressure reciprocating plunger diameter mm number matching motor power KW Dimensions L × W × H mm Weight kg hypertension 2D-SY / 6.3 6.3 160 32 51 1.1 655 × 480 × 1055 150 2D-SY/10 10 100 25 2D-SY/16 16 63 20 2D-SY/25 25 40 16 2D-SY/40 40 32 14 2D-SY/63 63 22 12 1.5 2D-SY/80 80 16 10 Number of cylinders: two 40mm piston stroke cycles per minute: 51 selected test pump should be based on the required test pressure to select a pump rated discharge pressure. Should also take into account the traffic requirements. Fourth, the main structure and working principle of the product is a horizontal two-cylinder reciprocating pump. Consists of motor, gear box, transmission box, water tanks, catchment, safety valves and water tanks and other major components. Pump mounted on the tank lid, water tank under the four wheels, so that the pump can be mobile and flexible. Motor and gear box by the two coupling halves join. Inside the worm gear shaft and worm gear ratio is 2:55. Worm shaft 180 ° to each other at both ends of the eccentric shaft, the transmission box by a sliding mechanism on both sides, the rotary motion into the slider, the reciprocating motion of the crosshead. Crosshead loaded plunger reciprocates within the tank, the pump suction and discharge processes alternate. The reciprocating action of the plunger, two working volume within the tank formation cycle. When the suction stroke when the piston, the valve is closed, the increase in the working volume with water tank, a vacuum cylinder, the working medium in the tank under the effect of atmospheric pressure, through the filter, into the pipe, the top moved into the valve into the cylinder. When the plunger to discharge stroke, the intake valve is closed, the valve was forced open, the plunger will enter the working medium through the valve manifold, transported to the test container, to achieve pressure test. Catchment is pump control hub, from the control, measurement and protection. Catchment provided with safety valve, drain valve and connect the output to take over the work of fitting and pressure gauge connector. The pump fluid end valve is the overload protection device, the factory has a good tune. Fifth, use an out of the box after installation (1) Install wheel. Set the four wheel on the axle (washer 20 on both sides of the wheel), put the cotter pin. (2) Install a safety valve. Twist to the sump drain plug on the package will be installed in the sump valve safety valve fitting M14 × 1.5-5H hole (note plus copper washer 6). (3) Install pressure gauge. Pressure gauge pressure gauge screwed into the side connector nut, so easy to observe the direction toward the surface, the pressure gauge should be equivalent to the maximum value of 1.2-1.5 times the rated pressure pump. 2, using the method (1) Preparation before use: ① gear box add a little oil, the oil that the oil level reaches the upper or lower position marked. Gear oil lubricant is black. ② signs on both sides of the transmission case by injecting the 30th refueling machine oil, the oil level should be slightly higher than the lower crosshead guide surface, long-term continuous use should pay attention to add. ③ Check the fastening bolt without loosening. ④ fill the tank clean working medium, and should be taken out of the water filter can not. ⑤ subjects containers should be pre-filled working medium. ⑥ container to be tested with the collector pipe connector good work. (2) use should be precautions: ① the highest gear box oil temperature should not exceed 80 ℃. ② work such as found in other parts of the pump or significant leakage, should be immediately removed. ③ valve can not be used when the relief valve. ④ In the boost process, if the pressure gauge pointer swings too, indicating that the user is pressure test piece volume is too small, then the best in the system connected to a pressure vessel with sufficient capacity (should comply with the relevant national standards) or Other appropriate storage devices. ⑤ pressure test pieces if they are large volume, continuous operation can be the first step, to be close to the test pressure and then jog boost. Operation should pay close attention to the system pressure, to avoid accidental overpressure. ⑥ If you accidentally accidental overpressure, can play an open valve, removable partial pressure of re-boost. (3) Use the steps ① Open the drain valve. ② start the motor, operating at atmospheric pressure for 5 minutes, check whether the normal operation of the pump. If there is no abnormal noise and blocking phenomenon, smoke, exhaust pump discharge conditions are normal and no significant fluctuations in the work of the media, you can close the drain valve, start the pump pressure test. ③ When the pump discharge pressure is at or near the required pressure value, which should be shut down. ④ test pump can also be installed outside the pipeline shutoff valve and drain valve, with container cut off, so that the test specimen in packing state. ⑤ After the pressure test, pressure relief valve open play that will work for the media back into the tank. (4) test pump coupling Size: catchment of the pump center line at the height of 770 mm, equipped with a working connection, the relevant dimensions shown in Figure 2, please click here Dimensions arrangement pipeline connected users. Six, the general failure and troubleshooting pressure test if found fault, you should first rule out the pump outside (were tested devices, piping systems, etc. leaking) failure, and then check the pump failure and exclusion. Symptom Cause Remedy pump pressure rise is too slow or does not rise one, put the valve is not closed tightly. 2, the filter is clogged or leaking joints. 3, the plunger seal loose or damaged. 4, the inlet and outlet valve put to death. 5, the inlet and outlet valve does not seal. Laps. 1, tightly closed or re-equipped research. 2, cleaning or removing dirt Tighten fittings. 3, adjusting the clamping screw cap or replace seals. 4, removed for inspection, cleaning or re-grinding. 5, reground or replaced. Pump pressure rise uneven one, there is a tank inlet and outlet valves put to death. 2, there is a tank inlet and outlet valve seal bad. 3, there is a cylinder seal loose or damaged. 1, according to the direction of movement of the plunger, hands swinging cylinder fault conditions and sound judgment, remove the clean-up or with research. 2, ibid determine the fault cylinder. Remove the valve reground or replaced. 3, supra and observation cylinder seat scuppers leaks determine the fault cylinder, adjust or replace the clamping screw cap seal pump dwell time is too short or less than the rated discharge pressure of a catchment on the drain valve leakage. 2, valve leakage. 3, within the catchment of the water tank valve or outlet valve leakage. 4, leaking joints. 1 Close the drain valve or reconfiguration research. 2, adjust the spring tension or clean the sealing faces or reground valve line. 3, re-grind or replace the valve with the valve seat. 4 Tighten fittings or replace gaskets. Temperature is too high a gear box, oil viscosity is low or dirty. 2, the bearing assembly is too tight. 3, the worm gear backlash is too small. 4, the safety valve or pump not working load is too heavy. 5, motor concentricity bad. 1, adjust or replace the lubricant oil quantity. 2, adjust the axial clearance. 3, check mark the contact surface, re-assembly and adjustment of the worm wheel position. 4, to prevent overloading or maintenance of safety valve operation. 5, reinstall, adjust the motor axis position. Overloading a motor load, pump overload operation. 2, passim poor lubrication. 3, the power supply voltage is too low 4, the plunger seal tightly. 1, to avoid overload operation. 2, supplement or replace the lubricant. 3, to improve the supply voltage. 4, appropriate to relax clamping screw sets. Seven, maintenance and repair a pump appearance, gear box and transmission lubricants and inside the tank pressure test medium must protect clean, does not allow dirt and other debris. 2, the first work with the oil should be changed after 56 hours. After every 500 hours to replace one. 3, long-term disabled pump, its internal anti-rust treatment should be carried out. First pressure test medium drained. Exposed parts should be oiled appearance. 4, always pay attention to the pump worm axial clearance: the worm is 0.04-0.07mm, worm gear is 0.05-0.10mm. If you do not comply with this value, need to be adjusted through cover, boring cover side cover paper pad or pad of paper. 5, in the use of ambient temperature is below 0 ℃, the working medium is water should be added antifreeze. Recommend using denatured alcohol as antifreeze. Proportioning ratio shown in Table 2. Ambient temperature ℃ 90 ° denatured alcohol% water% 0 - 10 33 67 -10 - 20 45 55 -20 - 30 54 46 -30 - 40 70 30