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Hydraulic Tset Pump

2D-SY Electric pressure testing equipment


2D-SY Electric pressure testing equipment

 

Introduction

Model 2D-SY (6.3-80 Mpa) electric hydraulic test pump is the up-to-date series product designed by the Joint Design Group for Hydraulic Test Pump of the General Machinery Research Institute under the Ministry of Machine-Building Industry. It features high level of ” Mechanization, Electrification and Automation”, long service life, stable performance, flexibility and lightweight that the old products enjoy. What’s more, a drive unit and cross-like converter are added so that the comprehensive indicators of the series product can meet the requirement, various performances become more stable and reliable with safe and easy use and power conservation. In its structure, an enclosed water tank is used, thereby reducing the height of the whole unit and making it more compact and attractive.

Application

Model 2D-SY (6.3-80 MPa) electric hydraulic test pump is mainly used in hydrostatic test for various pressure containers, oxygen cylinder, pipe, valve and steam boiler. It is a device in the new technology of processing and high pressure source for liquids in the lab.
The device is specially designed with clean water and emulsion livid of 5-60℃ and oil of viscosity not more than 45 mm2/s as the working media. Its ambient temperature is 5-60℃.
Technical Parameters
   The series hydraulic test pump has seven models and its basic parameters are shown in Table 1

Model

Rated pressure MPa

FlowL/h

plunger diameter mm

to-and fro
frequency

Motor

KW

overall dimension
mm

Weight

kg

High pressure

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

缸数:   Number of: reservoir 2
   Travel of plunger: 40 mm
   To-and-fro Frequency/minute: 51
   In selecting the hydraulic test pump, the rated hand pressure should be chosen in light of the test pressure needed with due consideration of the flow requirement
Main structure and Working Principle Structure and schematic Drawing
   The product is a horizontal two-reservoir reciprocating pump and mainly comprises a motor, reduction box, drive box, water reservoir, water collector, safety valve and water tank as is shown in Figure 1.
   
   The pump is fixed on the cover of water tank below which there are four rollers that facilitate the motion of the pump. The motor and reduction box are joined by two semi-couplers. The velocity ratio between the worm-gear shaft and worm gear in the reduction box is 2:55. At both ends of the worm shaft, eccentric shafts at an angle of 180℃ to each other turn the rotational motion into the reciprocating motion of the slide block and crosshead through the slide mechanism in the gearbox at both ends. The plunger on the crosshead moves reciprocally in the water reservoir, thus effecting the alternate suction and expulsion by the pump.Under the reciprocation of the plunger, the working volume in the two water reservoirs changes cyclically. When the plunger enters the suction travel the delivery valve s closed. With the increased working volume of the water reservoir, vacuum is created in the reservoir and the working media in the reservoir via the filter screen, intake pope and valve (pushed up). When the plunger enters the repulsion travel, the intake valve is closed and the delivery valve is forced to be open. The plunger sends working media to the water collector through the delivery valve, which is fed into the container to be tested for hydraulic test.
   The water collector is the control hub of the pump and serves as the controller, measurer and protector. In the collector are mounted a cut-off-valve, safety valve, delivery valve and working joints to the output tube, on which a pressure gauge is fixed.
   The cut-off valve is the control device for the pump and container to be tested. when the valve of hydraulic test pressure is reached, this valve should be closed and the unit suspended for dwelling inspection and test. After the pressure test is finished, the cut-off valve and delivery valve should be opened for relief of pressure and working media put back into the water tank.
The safety valve is the overload protector at the hydrodynamic end of the pump.



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ADD:Industrial Zone, Raoyang County, Hengshui, Hebei, China     keywords: Pressure Test Pump     Hydrostatic Test Pump