Internal leakage measuring device for hydraulic oil cylinder

Abstract

The utility model relates to a device for measuring internal leakage of a hydraulic oil cylinder. The lengthened oil pipe joint comprises a lengthened pipe body and a pair of threaded joints; one end of the bypass pipe is arranged to be a fixed end, the other end of the bypass pipe is arranged to be a connecting end, the fixed end of the bypass pipe is fixedly connected to the peripheral face of the lengthened pipe body, and a threaded connector I is fixedly arranged at the connecting end of the bypass pipe; a high-pressure ball valve; one end of the pressure measuring pipe is arranged as a front mounting end, the other end of the pressure measuring pipe is arranged as a rear mounting end, a threaded connector II is fixedly mounted at the front mounting end and is in threaded connection with an outlet of the high-pressure ball valve, and a threaded connector III is mounted at the rear mounting end; by means of the bypass pipe, the high-pressure ball valve and the pressure measuring pipe which are additionally arranged, after the pressure gauge is installed on the pressure measuring pipe threaded connector III, the pressure value of the hydraulic oil cylinder can be detected in real time, the high-pressure ball valve can be opened and closed at any time, internal leakage of the hydraulic oil cylinder can be detected in real time in the equipment operation process, frequent manual operation is not needed, and therefore the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder detection technical field, concretely is a kind of hydraulic cylinder measures internal leakage device. BACKGROUND

[0002] In the hydraulic system of ironworks, hydraulic cylinder is as core execution element, bears the key function of driving equipment action, however, with long-term high frequency operation of oil cylinder, its internal sealing assembly gradually appears wear, aging and other failure phenomena due to continuous friction and oil erosion, leading to frequent internal leakage of oil cylinder, internal leakage not only can cause system pressure fluctuation, equipment action anomaly, if not timely found, it will also cause operating line shutdown accident, cause significant production loss.

[0003] At present, detecting oil cylinder internal leakage needs to be disassembled oil pipe after shutdown, and the internal leakage degree is judged by measuring the pressure difference of oil cylinder A / B cavity (rod cavity / no rod cavity). This method has the following defects:

[0004] (1) Low detection efficiency: interrupt production process, time-consuming and laborious;

[0005] (2) High operation complexity: need to disassemble and assemble oil pipe repeatedly, increase labor cost and risk of misoperation;

[0006] (3) Environmental pollution risk: oil leakage is easy to occur during disassembly process, causing resource waste and environmental pollution;

[0007] In view of the above problems, the present application provides a kind of fast measure internal leakage device, to realize the real-time detection of internal leakage amount under the running state of oil cylinder, so as to shorten the maintenance cycle, reduce downtime loss, and reduce oil waste and pollution risk. UTILITY MODEL CONTENTS

[0008] The utility model solves the technical problem in the prior art, provides a kind of hydraulic cylinder measure internal leakage device, which is simple to install, can be detected regularly, reduces unplanned downtime, reduces labor intensity, reduces oil waste and avoids oil pollution.

[0009] The technical problem solved by the utility model is solved by the following technical scheme, a kind of hydraulic cylinder measure internal leakage device, comprising;

[0010] The lengthened oil pipe joint includes a lengthened pipe body and a pair of threaded joints, and the pair of threaded joints are fixedly installed on the two ends of the lengthened pipe body to be connected with the oil inlet and outlet holes of the hydraulic cylinder through the pipeline;

[0011] The bypass pipe has a fixed end at one end and a connecting end at the other end, the fixed end of the bypass pipe is fixedly connected to the outer peripheral surface of the lengthened pipe body, a threaded interface I is fixedly arranged on the connecting end of the bypass pipe, and the axis of the bypass pipe is perpendicular to the axis of the lengthened pipe body.

[0012] The high-pressure ball valve has an inlet and an outlet, and the inlet of the high-pressure ball valve is threadedly connected with the threaded interface I of the bypass pipe;

[0013] The pressure measuring pipe has one end provided as a front mounting end and the other end provided as a rear mounting end, and the threaded interface II is fixedly mounted on the front mounting end and threadedly connected with the outlet of the high-pressure ball valve, and the threaded interface III is mounted on the rear mounting end and used for being connected with an external pressure measuring mechanism.

[0014] The technical problem to be solved by the utility model can also be solved through the following technical scheme, the length of the lengthened oil pipe joint is 130mm-165mm.

[0015] The technical problem to be solved by the utility model can also be solved through the following technical scheme, the length of the lengthened oil pipe joint is 130mm-165mm.

[0016] The technical problem to be solved by the utility model can also be solved through the following technical scheme, the length of the lengthened oil pipe joint is 130mm-165mm.

[0017] Compared with the prior art, the utility model has the beneficial technical effects that: through the bypass pipe, the high-pressure ball valve and the pressure measuring pipe, the pressure value of the hydraulic oil cylinder can be detected in real time after the pressure gauge is installed on the threaded interface III of the pressure measuring pipe, the high-pressure ball valve can be turned on and off at any time, the internal leakage of the hydraulic oil cylinder can be detected in real time during the operation of the equipment, manual frequent operation is not needed, thereby the labor intensity of personnel is reduced, unnecessary oil discharge for detecting the internal leakage is avoided, thereby oil waste is reduced, foreign matters caused by frequent removal of the oil pipe and other operations are avoided, oil pollution is avoided, the safety risk caused by improper operation during the detection of the internal leakage of the oil cylinder is reduced, the detection efficiency is improved, the equipment operation is more stable, and finally the economic benefits of the company are increased. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the utility model.

[0019] Reference signs: 1, lengthened pipe body; 2, threaded joint; 3, bypass pipe; 4, threaded interface I; 5, high-pressure ball valve; 6, pressure measuring pipe; 7, threaded interface II; 8, threaded interface III. DETAILED DESCRIPTION

[0020] The specific technical scheme of the utility model is further described below with reference to the drawings so as to make the technical personnel in the art further understand the utility model without constituting a limitation on its rights.

[0021] Embodiment 1, refer to Figure 1 A hydraulic cylinder internal leakage testing device, comprising;

[0022] The lengthened oil pipe joint comprises a lengthened pipe body 1 and a pair of threaded joints 2, the lengthened pipe body 1 is formed in a substantially circular pipe structure, and the pair of threaded joints 2 are fixedly installed on the two ends of the lengthened pipe body 1 to be connected with the oil inlet and outlet holes of the hydraulic cylinder through pipelines, and the length of the lengthened oil pipe joint is 130mm-165mm, and the specific length can be selected according to the use requirement.

[0023] The bypass pipe 3 has a fixed end at one end and a connecting end at the other end, the fixed end of the bypass pipe 3 is fixedly connected to the outer circumferential surface of the lengthened pipe body 1 to allow the oil to enter the bypass pipe 3, a threaded interface I 4 is fixedly arranged on the connecting end of the bypass pipe 3, and the axis of the bypass pipe 3 is perpendicular to the axis of the lengthened pipe body 1.

[0024] In order to conveniently control the on-off of the oil in the bypass pipe 3, a high-pressure ball valve 5 is additionally arranged, the high-pressure ball valve 5 has an inlet and an outlet, that is, a two-way valve, the inlet of the high-pressure ball valve 5 is threadedly connected with the threaded interface I 4 of the bypass pipe 3.

[0025] The pressure measuring pipe 6 has a front mounting end at one end and a rear mounting end at the other end, the inner diameters of the bypass pipe 3 and the pressure measuring pipe 6 are 12mm-16mm, the specific inner diameter can be selected according to the use requirement, a threaded interface II 7 is fixedly arranged on the front mounting end and is threadedly connected with the outlet of the high-pressure ball valve 5, a threaded interface III 8 for connecting with an external pressure measuring mechanism is arranged on the rear mounting end, for example, is connected with an external pressure gauge, and the axes of the lengthened pipe body 1, the pair of threaded joints 2, the bypass pipe 3, the threaded interface I 4, the pressure measuring pipe 6, the threaded interface II 7 and the threaded interface III 8 are collinear.

[0026] In the use of the hydraulic cylinder internal leakage testing device in Embodiment 1, the lengthened oil pipe joint, the bypass pipe 3, the high-pressure ball valve 5 and the pressure measuring pipe 6 are sequentially connected, then the pressure gauge is mounted on the threaded interface II 7 of the pressure measuring pipe 6, and finally the two ends of the lengthened pipe body 1 are connected with the oil inlet and outlet holes of the hydraulic cylinder through pipelines, so that the internal leakage test of the hydraulic cylinder can be performed, when the internal leakage test is needed, the high-pressure ball valve 5 is only needed to be opened, after the oil enters the pressure measuring pipe 6, the pressure difference of the oil between the rod cavity and the rodless cavity of the hydraulic cylinder is tested, the pressure difference of the oil is detected, and whether there is an internal leakage problem of the oil is judged.

Claims

1. A device for detecting internal leakage in a hydraulic cylinder, characterized in that: Include; The lengthened oil pipe joint comprises a lengthened pipe body and a pair of threaded joints, and the pair of threaded joints are fixedly installed on two ends of the lengthened pipe body to be connected with the inlet and outlet holes of the hydraulic cylinder through pipes; The bypass pipe is provided with a fixed end and a connecting end, the fixed end of the bypass pipe is fixedly connected to the outer circumferential surface of the lengthened pipe body, the threaded interface I is fixedly arranged on the connecting end of the bypass pipe, and the axis of the bypass pipe is perpendicular to the axis of the lengthened pipe body; The high-pressure ball valve has an inlet and an outlet, and the inlet of the high-pressure ball valve is threadedly connected with the threaded interface I of the bypass pipe; The pressure measuring pipe is provided with a front mounting end and a rear mounting end, the threaded interface II is fixedly arranged on the front mounting end and is threadedly connected with the outlet of the high-pressure ball valve, and the threaded interface III is arranged on the rear mounting end and is used for being connected with an external pressure measuring mechanism.

2. A hydraulic cylinder internal leakage measuring device according to claim 1, characterized in that: The axes of the lengthened pipe body, the pair of threaded joints, the bypass pipe, the threaded interface I, the pressure measuring pipe, the threaded interface II and the threaded interface III are collinear.

3. The hydraulic cylinder internal leakage measuring device according to claim 1, wherein: The length of the lengthened oil pipe joint is 130mm-165mm.

4. The hydraulic cylinder internal leak detection device of claim 1, wherein: The inner diameters of the bypass pipe and the pressure measuring pipe are 12mm-16mm.

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