SU1017834A1 - Bed for testing pneumohydroaccumulators - Google Patents

Abstract

A test bench for pneumohydroaccumulators containing at least two test pneumohydroaccumulators whose gas cavities are interconnected - main and make-up pumps with safety valves, a distributor and a tank differing in that, in order to expand its functionality, the stand is equipped with two valves hydraulic cylinders interconnected by means of rods, the piston cavities of which are connected to the liquid cavities of the test pneumohydroaccumulators, and the rod cavities through the a valve with a pressure pump of the main pump and a tank; the pressure pump of the feed pump is connected to the liquid cavities of the pneumohydroaccumulators under test through additionally installed check valves.

Description

00 00 4 The invention relates to a machine-: a structure in particular to test components of a hydraulic equipment) 1 can be used in testing pneumohydraulic accumulators. A test bench for testing pneumohydraulic batteries, containing a main pump connected by a pressure line through a reversing distributor to the liquid cavity of the test battery ClD, is known. The closest to and finding is a test bench for pneumohydraulic batteries, at least two tested pneumohydrocculators, are located. which are interconnected, the main and make-up pumps with safety valves, distributor and tank. 2, The disadvantage of this test bench is that the connection of the main Pump with the tested pneumohydroaccumulators does not allow to adjust the amount of cyclic change of the fluid level in the pneumohydroaccumulators, which limits the functionality of the bench. The purpose of the invention is to expand the functionality of the stand. The goal is achieved by the fact that a test bench for pneumohydroaccumulators containing at least two test pneumohydroaccumulators whose gas cavities are connected - Between themselves, the main and make-up pumps with safety valves, the distributor and the tank are rigidly equipped with two connected to each other with the help of hydraulic rod stocks, the pistons, the piston cavities of which are soy denin with liquid cavities of the tested pneumohydroaccumulators, and the rods The cavities are through a distributor with a pressure hydroline of the main pump and a tank, the pressure hydraulic line of the makeup pump is connected to the liquid cavities of the tested pneumohydroaccumulators through other fully mounted check valves. The drawing shows the hydraulic scheme of the proposed stand. The test bench for pneumohydroaccumor tori contains at least two test subjects pneumohydroaccumulators 1 and 2, the gas cavities of which are interconnected, main pump 3 with safety valve 4, and make-up pump 5 with safety valve b, distributor 7 and tank 8 .. In addition, the cage is equipped with two rigidly interconnected hydraulic rods 9 and 10, with the help of rods, the piston cavities of which are connected to the liquid cavities of the tested hydroaccumulators 1 and 2, and the rod cavities of hydrocylindra 9 and 10 are connected 3, a distributor 7 with a pressure head hydroline of the main pump 3 and a tank 8. The pressure hydroline of the makeup pump 5 is connected to the liquid cavities of the pneumatic-hydraulic accumulators 1 and 2 that are being set up through the check valves 11. The stand is equipped with limit switches 12 and 13 installed along the hydraulic cylinders 9 rods and 10. The stand works as follows. When installing the distributor 7 in the left position, the working fluid from the main pump 3 is fed into the rod end of the hydraulic cylinder 9-, moving the piston to the left. The liquid from the piston chamber of the hydraulic cylinder 9 is displaced in the torus pnevmogidroakkumul 1. Simultaneously, liquid from pnevmogidroakkumul torus 2 merges into the piston chamber of the hydraulic cylinder 10, rigidly associated with the rod of a hydraulic cylinder 9. The piston of the hydraulic cylinder 10 to move in! Referring to the left, displaces the fluid from the cavity through the valve stem 7 in € ak 8. Movement to the left is about to occur until the final switch – tel 12 is activated. When the final switch is triggered, the distributor 7 is set to the right position. In this case, the main pump 3 communicates with the rod cavity of the hydraulic cylinder 10, and the rod cavity of the hydraulic cylinder 9 is discharged into the tank 8. The pistons of the hydraulic cylinders 9 and 10 move to the right. The fluid from the piston cavity of the hydraulic reservoir 10 is injected from the pneumohydroaccumulator of torus 1 into the pneumohydroaccumulator 2, and from the pneumohydroaccumulator of 1 it discharges into the piston cavity of the hydraulic cylinder. The movement of the pistons to the right continues until the limit switch 13 trips. When the limit switch 13 trips, the valve 7 is set to the left position and the cycle repeats.

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Claims (1)

STAND FOR TESTING PNEUMATIC HYDRAULIC ACCUMULATORS, containing at least two tested pneumatic accumulators, gas cavities of which are interconnected, main and make-up pumps with safety valves, a distributor and a tank, characterized in that, in order to expand the functionality, the stand is equipped with two rigidly connected between by means of rods with hydraulic cylinders, the piston cavities of which are connected to the fluid cavities of the tested pneumohydraulic accumulators, and the rod cavities through the distributor l with the pressure line of the main pump and the tub, wherein the boost pressure line nasosa.soedinena cavities with liquid test hydropneumatic accumulator through further check valves installed.