Quick pressurization system for steel pipe hydrostatic tester
A technology of hydraulic testing machine and pressurization system, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problem of reducing equipment production efficiency, affecting the pressure test rhythm, and slow pressurization problems, to achieve the effect of fast energy storage, balanced power use, and accelerated pressure test rhythm
Inactive Publication Date: 2009-08-26
CHINA NAT HEAVY MACHINERY RES INSTCO
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Problems solved by technology
[0002] In the existing steel pipe hydraulic testing machine pressure test system, when the steel pipe to be tested is filled with water, the main booster or high-pressure water pump pressurizes the steel pipe, and the pressure is established from zero, so the whole pressurization process is relatively slow
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[0012] Such as figure 1 As shown, it includes pre-charger 1, double check valve 2, pressure relay 3, accumulator group 4, solenoid valve 5, solenoid valve 6 and liquid filling tank, pre-charger 1 and double check valve 2 connection, the double check valve 2 control end is connected to the pressure relay 3; the pre-charger 1 is connected to the accumulator group 4 through a pipeline; Valve 5 and solenoid valve 6.
[0013] The double check valve 2 includes a water filter 2.1, a check valve group 2.2 and a safety valve 2.3; the liquid filling tank is connected to the water filter 2.1 through a pipeline, and the water filter 2.1 is connected to the check valve group 2.2 through a pipeline; the one-way Valve group 2.2 is connected to precharger 1. When working, the water in the liquid-filled tank passes through the water filter 2.1 and the one-way valve group 2.2 to the plunger cylinder 1.1 and the plunger cylinder 1.3. When performing auxiliary actions (steel pipe flushing, stee...
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The invention belongs to a quick pressurization system for a steel pipe hydrostatic tester, which is characterized in that water in a liquid filling tank passes through a water filter (2.1) and a one-way valve bank (2.2) in a double one-way valve (2) to a plunger type cylinder (1.1) and a plunger type cylinder (1.3) of a pre-pressurizer (1), a double-acting piston-rod hydraulic cylinder (1.2) reciprocates to pressurize the water in the plunger type cylinder (1.1) and the plunger type cylinder (1.3), and the pressure water is stored in an accumulator group (4) through the one-way valve bank (2.2); the action of the double-acting piston-rod hydraulic cylinder (1.2) is controlled by a pressure relay (3), an oil pressure system controls the pressure of the pressure water, and a safety valve (2.3) controls the pressure of the highest pressure water; and when the pressure testing is executed, one path of pressure water in the accumulator group (4) is supplied to a pre-sealing shuttle valve through an electromagnetic valve (6) , the other path of pressure water is quickly filled into a steel pipe through an electromagnetic valve (5) for pressurization, and when the pressure reaches a preset value, a main pressurizer continuously performs pressurization to a set value. The quick pressurization system can perform pressurization quickly and improve production efficiency.
Description
technical field [0001] The invention belongs to a pressure testing system of a steel pipe hydraulic testing machine, in particular to a rapid pressurization system of a large-diameter steel pipe hydraulic testing machine. Background technique [0002] In the existing steel pipe hydraulic testing machine pressure test system, when the steel pipe to be tested is filled with water, the main supercharger or high-pressure water pump pressurizes the steel pipe, and the pressure is established from zero, so the whole pressurization process is relatively slow. Especially for large-diameter steel pipes, the liquid replenishment volume that needs to be pressurized is relatively large. This pressurization method greatly affects the pressure test rhythm and reduces the production efficiency of the equipment. Contents of the invention [0003] The purpose of the present invention is to provide a rapid pressurization system for a steel pipe hydraulic testing machine that can quickly pr...
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IPC IPC(8): G01N3/12G01N3/02
Inventor 杨红娟刘继高隋建张建功李培力王旭
Owner CHINA NAT HEAVY MACHINERY RES INSTCO