A multi-pass hydraulic synchronous supercharging device

Abstract

The application provides a multi-channel hydraulic synchronous pressurizing device, which comprises a low-pressure end hydraulic cylinder, pressurizing cylinders and a high-pressure end stroke indicating rod, the front end of the low-pressure end hydraulic cylinder is sequentially connected with a plurality of pressurizing cylinders, the pressurizing cylinder at the front end is connected with the high-pressure end stroke indicating rod, the low-pressure end stroke indicating rod, the high-pressure end stroke indicating rod and each mechanical force transmission rod are coaxial and the movement strokes are synchronous, and the high-pressure liquid outlets of the pressurizing cylinders synchronously output high-pressure liquid. The application can convert one low-pressure input pressure into three high-pressure output liquids, and through mechanical forced force transmission rods, the three high-pressure end output displacements are synchronous and do not interfere with each other, so that the technical problem of different output movements under different load working conditions is solved, small-flow high-pressure endurance performance tests of multiple test safety valves are simultaneously realized, and the test efficiency is improved by multiple times.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic devices, in particular to a multi-channel hydraulic synchronous pressure boosting device. BACKGROUND

[0002] The safety valve of the hydraulic support is an important safety component of the hydraulic support system. When the mine pressure in the form of external load acts on the hydraulic support, the safety valve opens to overflow, ensuring that the support resistance of the hydraulic support is constant. When the roof pressure ends, the safety valve is closed and a certain closing pressure is maintained to ensure the effective support of the hydraulic support to the roof. The overflow performance of the safety valve is directly related to the overall support effect of the hydraulic support.

[0003] It is easy to test the overflow performance of a single safety valve, but the efficiency is low. However, it is difficult to test the overflow performance of multiple safety valves simultaneously because there is inevitably a certain deviation in the set pressure. The conventional testing method cannot achieve synchronous output under different load conditions, and a new device needs to be designed to realize synchronous testing of the overflow performance of multiple safety valves. SUMMARY

[0004] The purpose of the present application is to provide a multi-channel hydraulic synchronous pressure boosting device. Through the piston area ratio, one low-pressure input pressure can be converted into three high-pressure output liquids. The mechanical forced transmission rod is used to synchronize the displacement of the three high-pressure ends and prevent interference, thereby solving the technical problem of different output movements under different load conditions. The small-flow high-pressure durability test of multiple safety valves is realized, and the testing efficiency is improved by multiple times.

[0005] The present application provides a multi-channel hydraulic synchronous pressure boosting device. The device comprises a low-pressure end hydraulic cylinder, a pressure boosting cylinder and a high-pressure end stroke indicating rod. The front end of the low-pressure end hydraulic cylinder is connected to a plurality of pressure boosting cylinders in sequence, and the pressure boosting cylinder at the front end is connected to the high-pressure end stroke indicating rod. The low-pressure end hydraulic cylinder comprises a low-pressure end cylinder barrel, a low-pressure piston and a low-pressure end stroke indicating rod. The rear end of the low-pressure piston is fixedly connected to the front end of the low-pressure end stroke indicating rod, and the low-pressure end stroke indicating rod drives the low-pressure piston to reciprocate in the low-pressure end cylinder barrel. The pressure boosting cylinder comprises a pressure boosting cylinder barrel, a high-pressure piston and a mechanical transmission rod. The rear end of the high-pressure piston is fixedly connected to the front end of the mechanical transmission rod, and the mechanical transmission rod drives the high-pressure piston to reciprocate in the pressure boosting cylinder barrel. The rear end of the mechanical transmission rod is fixedly connected to the front end of the low-pressure piston. The front end of the high-pressure piston of the pressure boosting cylinder at the front end is fixedly connected to the high-pressure end stroke indicating rod. The front end and the rear end of the low-pressure end cylinder barrel are fixedly connected to the pressure boosting cylinder barrels through a low-pressure end end cover. The low-pressure end stroke indicating rod, the high-pressure end stroke indicating rod and the mechanical transmission rods are coaxial and have synchronous movement. The high-pressure liquid outlets of the pressure boosting cylinders output high-pressure liquid synchronously.

[0006] In some embodiments, two adjacent booster cylinders are fixedly connected through connecting flanges.

[0007] In some embodiments, the tail end of the low-pressure end hydraulic cylinder is fixedly connected to a tail end flange, and a guide sleeve is embedded in the center of the tail end flange, and the low-pressure end stroke indicating rod penetrates through the guide sleeve.

[0008] In some embodiments, an exhaust hole is formed in the connecting flange at the rear end of each booster cylinder, and the exhaust hole is in communication with the inner cavity of the booster cylinder barrel.

[0009] In some embodiments, a liquid input hole is formed in the tail end flange, and the liquid input hole is in communication with the inner cavity of the low-pressure end cylinder barrel.

[0010] In some embodiments, a force transmission rod guide sleeve is arranged on the inner wall of the booster cylinder, and a mechanical force transmission rod penetrates through the force transmission rod guide sleeve and reciprocates along the force transmission rod guide sleeve.

[0011] In some embodiments, the booster cylinder is provided with three.

[0012] In some embodiments, a high-pressure liquid outlet is formed in each booster cylinder barrel, and the high-pressure liquid outlet is located at the front of the booster cylinder barrel.

[0013] In some embodiments, the outer diameter of the low-pressure end cylinder barrel is greater than the outer diameter of the booster cylinder barrel.

[0014] In some embodiments, the outer diameter of the low-pressure end stroke indicating rod is smaller than the outer diameter of the high-pressure end stroke indicating rod, and the outer diameter of the high-pressure end stroke indicating rod is equivalent to the outer diameter of the mechanical force transmission rod.

[0015] The beneficial effects of the present application are: solving the technical problem of motion out of synchronization under different load conditions, realizing synchronous motion under multiple different load (set pressure) conditions, which can be used for realizing synchronous high-pressure small-flow overflow performance test of multiple test safety valves, and the test efficiency is improved by multiple times, and it has strong popularization and use value in various laboratories, university research institutes and hydraulic support safety valve product production enterprises.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0018] In which:

[0019] Figure 1 The structure of the multi-channel hydraulic synchronous booster device in the embodiments of the present application is shown in the figure.

[0020] Figure label:

[0021] 1-Tail flange; 2-Low-pressure hydraulic cylinder; 3-Low-pressure stroke indicator rod; 4-Low-pressure piston; 5-Booster cylinder; 6-Mechanical force transmission rod; 7-High-pressure piston; 8-Force transmission rod guide sleeve; 9-Connecting flange; 10-High-pressure stroke indicator rod; 11-Liquid inlet port; 12-Guide sleeve; 13-High-pressure liquid outlet; 14-Exhaust port; 15-Low-pressure end cap. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] The multi-channel hydraulic synchronous booster device of the present invention is described below with reference to the accompanying drawings.

[0024] like Figure 1 As shown in the figure, this application proposes a multi-channel hydraulic synchronous booster device, including a low-pressure end hydraulic cylinder 2, a booster cylinder 5 and a high-pressure end stroke indicator rod 10. The front end of the low-pressure end hydraulic cylinder 2 is connected to three booster cylinders 5 in sequence, and the booster cylinder 5 located at the frontmost end is connected to the high-pressure end stroke indicator rod 10.

[0025] The low-pressure end hydraulic cylinder 2 includes a low-pressure end cylinder barrel, a low-pressure piston 4, and a low-pressure end stroke indicator rod 3. The rear end of the low-pressure piston 4 is fixedly connected to the front end of the low-pressure end stroke indicator rod 3. The low-pressure end stroke indicator rod 3 drives the low-pressure piston 4 to reciprocate within the low-pressure end cylinder barrel.

[0026] The booster cylinder 5 includes a booster cylinder barrel, a high-pressure piston 7, and a mechanical transmission rod 6. The rear end of the high-pressure piston 7 is fixedly connected to the front end of the mechanical transmission rod 6. The mechanical transmission rod 6 drives the high-pressure piston 7 to reciprocate within the booster cylinder barrel. The rear end of the mechanical transmission rod 6 is fixedly connected to the front end of the low-pressure piston 4. The front end of the high-pressure piston 7 in the foremost booster cylinder 5 is fixedly connected to the high-pressure end stroke indicator rod 10. The front end of the low-pressure end cylinder barrel and the end booster cylinder barrel are fixedly connected by a low-pressure end cap 15. Adjacent booster cylinders 5 are fixedly connected by a connecting flange 9.

[0027] The low-pressure end stroke indicator rod 3, the high-pressure end stroke indicator rod 10, and each mechanical force transmission rod 6 are coaxial and move synchronously. The high-pressure fluid outlet 13 of each booster cylinder 5 synchronously outputs high-pressure fluid.

[0028] The tail end of the low-pressure end hydraulic cylinder 2 is fixedly connected with a tail end flange 1, and a guide sleeve 12 is embedded in the center of the tail end flange 1, and the low-pressure end stroke indicating rod 3 penetrates through the guide sleeve 12. The inner wall of the booster cylinder 5 is provided with a force transmission rod guide sleeve 8, and the mechanical force transmission rod 6 penetrates through the force transmission rod guide sleeve 8 and reciprocates along the force transmission rod guide sleeve 8.

[0029] The tail end flange 1 is provided with a liquid input hole 11 communicating with the inner cavity of the low-pressure end cylinder. The connecting flange 9 at the rear end of each booster cylinder 5 is provided with an exhaust hole 14 communicating with the inner cavity of the booster cylinder. Each booster cylinder is provided with a high-pressure liquid outlet 13 located at the front of the booster cylinder.

[0030] The outer diameter of the low-pressure end cylinder is greater than the outer diameter of the booster cylinder. The outer diameter of the low-pressure end stroke indicating rod 3 is smaller than the outer diameter of the high-pressure end stroke indicating rod 10, and the outer diameter of the high-pressure end stroke indicating rod 10 is equivalent to the outer diameter of the mechanical force transmission rod 6.

[0031] In some specific embodiments, the number of high-pressure output ends can be further expanded, that is, a plurality of booster cylinders 5 are connected, to realize high-pressure output of multiple different pressure requirements, under the condition that the input source is stable and the use is ensured.

[0032] In some specific embodiments, the low-pressure end cover 15 is fixedly connected with the connecting flange 9 of the booster cylinder 5 by bolts. The connecting flanges 9 of the two connected booster cylinders 5 are fixedly connected by bolts.

[0033] When the device is working, the low-pressure liquid can be input from the liquid input hole 11 of the low-pressure end through the hydraulic system control, and the output force is transmitted through the low-pressure piston 4, the mechanical force transmission rod 6 and the high-pressure piston 7, to realize the high-pressure end output of the first booster cylinder 5, and the high-pressure liquid is discharged from the high-pressure liquid outlet 13 (i.e. the high-pressure end), and at the same time, the output force and the output stroke of the three high-pressure ends are synchronized through the mechanical force transmission rod 6 of the last two booster cylinders 5, that is, the three high-pressure liquid outlets 13 discharge high-pressure liquid at the same time, according to the piston area ratio, the high-pressure liquid pressure of the three high-pressure ends is increased, and the movement stroke is synchronized, which is independent of the load size of the three high-pressure liquid outlets 13.

[0034] When the booster device returns, the three high-pressure liquid outlets 13 are provided with liquid at the same time through the hydraulic system, so that the booster device resets, and the low-pressure stroke indicating rod 3 and the high-pressure stroke indicating rod 10 can display the reset condition of the booster device.

[0035] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0039] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0040] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and the ordinary skilled in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A multi-pass hydraulic synchronous supercharging device, characterized by, The device comprises a low-pressure end hydraulic cylinder, a plurality of booster cylinders and a high-pressure end stroke indicating rod, the front end of the low-pressure end hydraulic cylinder is sequentially connected with the plurality of booster cylinders, the frontmost booster cylinder is connected with the high-pressure end stroke indicating rod, wherein, The low-pressure end hydraulic cylinder comprises a low-pressure end cylinder, a low-pressure piston and a low-pressure end stroke indicating rod, the rear end of the low-pressure piston is fixedly connected with the front end of the low-pressure end stroke indicating rod, and the low-pressure end stroke indicating rod drives the low-pressure piston to reciprocate in the low-pressure end cylinder. The booster cylinder comprises a booster cylinder, a high-pressure piston and a mechanical force transmission rod, the rear end of the high-pressure piston is fixedly connected with the front end of the mechanical force transmission rod, the mechanical force transmission rod drives the high-pressure piston to reciprocate in the booster cylinder, the rear end of the mechanical force transmission rod is fixedly connected with the front end of the low-pressure piston, the front end of the high-pressure piston of the frontmost booster cylinder is fixedly connected with the high-pressure end stroke indicating rod, the front end of the low-pressure end cylinder is fixedly connected with the rear end of the booster cylinder, and the inner wall of the booster cylinder is provided with a force transmission rod guide sleeve, the mechanical force transmission rod penetrates through the force transmission rod guide sleeve and reciprocates along the force transmission rod guide sleeve. The low-pressure end stroke indicating rod, the high-pressure end stroke indicating rod and the mechanical force transmission rods are coaxial and have synchronous movement strokes, and the high-pressure liquid outlets of the booster cylinders synchronously output high-pressure liquid. During the operation of the device, the low-pressure liquid is input from the liquid input hole of the low-pressure end through the hydraulic system control, the output force is transmitted through the low-pressure piston, the mechanical force transmission rod and the high-pressure piston, the high-pressure end of the first booster cylinder is output, the high-pressure liquid is discharged from the high-pressure liquid outlet, and the output force and the output stroke of the three high-pressure ends are synchronized through the mechanical force transmission rods of the last two booster cylinders.

2. The multi-pass hydraulic synchronous supercharging device according to claim 1, characterized in that, The adjacent two booster cylinders are fixedly connected through a connecting flange.

3. The multi-pass hydraulic synchronous supercharging device according to claim 1, characterized in that, The tail end of the low-pressure end hydraulic cylinder is fixedly connected with a tail end flange, a guide sleeve is embedded in the center of the tail end flange, and the low-pressure end stroke indicating rod penetrates through the guide sleeve.

4. The multi-pass hydraulic synchronous supercharging device of claim 1, wherein An exhaust hole is arranged on the connecting flange at the rear end of each booster cylinder and communicates with the inner cavity of the booster cylinder.

5. The multi-pass hydraulic synchronous supercharging device according to claim 3, characterized by A liquid input hole is arranged on the tail end flange and communicates with the inner cavity of the low-pressure end cylinder.

6. The multi-pass hydraulic synchronous supercharging device of claim 1, wherein The device comprises three booster cylinders.

7. The multi-pass hydraulic synchronous supercharging device of claim 1, wherein A high-pressure liquid outlet is arranged on each booster cylinder and located at the front part of the booster cylinder.

8. The multi-pass hydraulic synchronous supercharging device of claim 1, wherein The outer diameter of the low-pressure end cylinder is larger than that of the booster cylinder.

9. The multi-pass hydraulic synchronous supercharging device of claim 1, wherein, The outer diameter of the low-pressure end stroke indicating rod is smaller than that of the high-pressure end stroke indicating rod, and the outer diameter of the high-pressure end stroke indicating rod is equivalent to that of the mechanical force transmission rod.

Images