Hydraulic pipe network system for quickly judging faults

Abstract

The utility model discloses a hydraulic pipe network system for quickly judging faults, which comprises an oil tank, a main oil cylinder and an auxiliary oil cylinder, and the oil tank is respectively communicated with the main oil tank and the auxiliary oil cylinder through pipelines; the device further comprises a plurality of components arranged at different positions of the pipeline respectively, the pipeline comprises a plurality of pipeline sections, and block valves are detachably connected to the pipeline sections connected with the oil tank, the main oil cylinder and the auxiliary oil cylinder and the pipeline sections located between the adjacent components. According to the utility model, the effect of quickly eliminating and judging the fault of the hydraulic system can be realized through the intercepting effect of the intercepting valves at the same position on a medium, and the specific part of the fault can be accurately found out; according to the utility model, the quick and effective maintenance work can be realized only by arranging the block valve with lower cost, and the operation is convenient and fast; the service life of the block valve is long, frequent maintenance is not needed, and the manufacturing cost of the whole system is low; and the device can be suitable for other lubricating systems or pneumatic control systems and is wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment maintenance, in particular to a hydraulic pipe network system for quickly judging faults. Background Art

[0002] Hydraulic system equipment is widely used in all walks of life. The fault diagnosis method of hydraulic system is relatively complicated. If the fault location cannot be quickly diagnosed and handled in time during the production process, it will cause significant losses to production.

[0003] At present, the most common way to deal with hydraulic system failures is to first analyze the hydraulic system design schematic, infer the most likely hydraulic component to fail from the general phenomenon of the failure, and then conduct investigation, screening, and verification, and finally find the fault location and perform repairs. This maintenance process will undoubtedly consume a lot of time and manpower, and may cause hydraulic oil contamination, and the final fault location may also be incorrect.

[0004] With the integrated development of hydraulic systems, some advanced hydraulic systems have adopted online fault diagnosis and analysis systems. However, the production cost is high and there are many electrical components involved. They are easily damaged in the use environment of the hydraulic system and have poor practicality. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a hydraulic pipe network system which has low cost, accurate fault judgment and can effectively reduce the maintenance workload and is used for quickly judging faults.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a hydraulic pipe network system for quickly judging faults, including an oil tank, a main oil cylinder and an auxiliary oil cylinder, the oil tank is connected to the main oil tank and the auxiliary oil cylinder through pipelines respectively; it also includes a plurality of components respectively arranged at different positions of the pipeline, the pipeline includes a plurality of pipeline sections, and the pipeline sections connected to the oil tank, the main oil cylinder, the auxiliary oil cylinder and the pipeline sections located between adjacent components are all detachably connected with shut-off valves.

[0007] As an improvement of the above solution: the cut-off valve is threadedly connected to the corresponding pipeline section.

[0008] As an improvement of the above scheme: the end of the cut-off valve is provided with an internal threaded hole, and the end of the pipeline section connected to the cut-off valve in the pipeline is provided with an external thread; and a high-temperature resistant sealing ring and a metal sealing ring are also provided at the connection between the pipeline section and the cut-off valve.

[0009] As an improvement of the above solution: the metal sealing ring abuts against the end face of the pipeline section, the high temperature resistant sealing ring abuts against the bottom surface of the internal threaded hole of the cut-off valve, and the metal sealing ring abuts against the high temperature resistant sealing ring.

[0010] As an improvement of the above solution: the shut-off valve is a normally open shut-off valve.

[0011] As an improvement of the above scheme: an annular fixing groove is also provided on the outer peripheral surface of the pipeline section near the end head. When the shut-off valve is connected to the pipeline section, the inner wall of the fixing groove is flush with the end head surface of the shut-off valve in the vertical direction; a sealing ring is sleeved on the pipeline section, the bottom of the sealing ring is inserted into the fixing groove to form a chimeric fit, and the top of the sealing ring is bent toward the shut-off valve and sleeved on the end of the shut-off valve.

[0012] As an improvement of the above solution: the sealing ring is a flexible sealing ring.

[0013] The beneficial effects of the utility model are as follows: the utility model arranges a plurality of shut-off valves in the pipeline network of the hydraulic system, and the shut-off valves are arranged on the pipeline sections connected to the oil tank, the main oil cylinder, the auxiliary oil cylinder and the pipeline sections between adjacent components, so that the parts of the hydraulic pipeline network system where the pipelines and various components exchange media are covered with shut-off valves, and the medium flow at the corresponding components can be controlled by each shut-off valve, so that the effect of quickly eliminating and judging the hydraulic system fault can be achieved through the shut-off effect of the shut-off valves at different positions on the medium, and the specific part where the fault occurs can be accurately found; the utility model can achieve fast and effective maintenance work and convenient operation only by setting low-cost shut-off valves; the shut-off valves themselves have a long service life and do not require frequent maintenance, and can be directly modified using the original hydraulic system, and the cost of the entire system is low; and it can also be applied to other lubrication systems or pneumatic control systems, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the connection between the cut-off valve and the pipeline section in the utility model.

[0016] The markings in the figure are: 100-oil tank, 200-main oil cylinder, 300-auxiliary oil cylinder, 400-cut-off valve, 401-first cut-off valve, 402-second cut-off valve, 403-third cut-off valve, 404-fourth cut-off valve, 405-fifth cut-off valve, 406-sixth cut-off valve, 407-seventh cut-off valve, 408-eighth cut-off valve, 409-ninth cut-off valve, 410-tenth cut-off valve, 411-eleventh cut-off valve, 412- The twelfth shut-off valve, 413-the thirteenth shut-off valve, 500-pipeline, 510-high temperature resistant sealing ring, 520-metal sealing ring, 530-fixing groove, 540-sealing collar, 610-oil pump, 620-electromagnetic overflow valve, 630-pressure gauge, 640-first one-way valve, 650-second one-way valve, 660-first solenoid valve, 670-second solenoid valve, 680-first hydraulically controlled one-way valve, 690-second hydraulically controlled one-way valve. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "up", "down", and "inside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0019] like Figure 1 and Figure 2 As shown, the hydraulic pipe network system for quickly judging faults disclosed in the utility model is composed of an oil tank 100, a main oil cylinder 200, a secondary oil cylinder 300, a cut-off valve 400, a pipeline 500 and a plurality of other components; the oil tank 100, the main oil cylinder 200, the secondary oil cylinder 300 and other components are connected through the pipeline 500 to form a hydraulic oil circuit to realize the delivery of hydraulic oil. The pipeline 500 includes a plurality of pipeline sections. The utility model sets a corresponding number of cut-off valves 400 according to the number of components used. The cut-off valve 400 adopts a normally open cut-off valve. When no fault occurs, the cut-off valve 400 does not need to be operated, and the smooth production can be ensured during maintenance; the cut-off valve 400 is set on the pipeline section connected to the oil tank 100, the main oil cylinder 200, and the secondary oil cylinder 300, and on the pipeline section between adjacent components, and the delivery of hydraulic oil near the corresponding components is cut off by the cut-off valve 400.

[0020] In the present invention, the connection between the cut-off valve 400 and the corresponding pipeline section in the pipeline 500 is threaded connection or flange connection, and the threaded connection, which is more convenient to operate, is the preferred solution. If the diameter of the pipeline 500 is too large, the flange connection can also be used. In the assembly structure using threaded connection, if Figure 2 As shown, an internal threaded hole is provided at the end of the shut-off valve 400, and the end of the shut-off valve 400 described here includes an inlet end and an outlet end of the shut-off valve 400; an external thread is provided at the end of the pipeline section connected to the shut-off valve 400 in the pipeline 500, and the internal threaded hole and the external thread form a threaded fit.

[0021] In order to ensure the sealing of the connection between the shut-off valve 400 and the pipeline 500, the utility model is provided with a high temperature resistant sealing ring 510 and a metal sealing ring 520 at the connection between the pipeline section and the shut-off valve 400. Specifically, the metal sealing ring 520 is in contact with the end face of the end of the pipeline section, the high temperature resistant sealing ring 510 is in contact with the bottom face of the internal threaded hole of the shut-off valve 400, and the metal sealing ring 520 is in contact with the high temperature resistant sealing ring 510; that is, the metal sealing ring 520 is arranged in the outer layer and matches with the end face of the pipeline 500, and the high temperature resistant sealing ring 510 is arranged in the inner layer and matches with the bottom face of the internal threaded hole of the shut-off valve 400. The high temperature resistant sealing ring 510 is made of a rubber material with good heat resistance, and the material of the metal sealing ring 520 is not limited, and a metal with high strength performance can be used. The utility model improves the sealing performance of the connection between the shut-off valve 400 and the pipeline 500 by providing a high temperature resistant sealing ring 510, and at the same time utilizes a metal sealing ring 520 to improve the compression effect of the high temperature resistant sealing ring 510, thereby ensuring that the end face of the pipeline 500 and the metal sealing ring 520 are tightly compressed.

[0022] Further, such as Figure 2 As shown, the utility model also provides a sealing collar 540 at the connection between the cut-off valve 400 and the pipeline 500, and an annular fixing groove 530 is provided on the outer peripheral surface of the pipeline section near the end. When the cut-off valve 400 is connected to the pipeline section, the inner wall of the fixing groove 530 is flush with the end surface of the cut-off valve 400 in the vertical direction; the bottom of the sealing collar 540 is inserted into the fixing groove 530 to form a chimeric fit, and the top of the sealing collar 540 is bent toward the cut-off valve 400 and sleeved on the end of the cut-off valve 400. The sealing collar 540 is provided to enhance the sealing effect of the connection and effectively prevent the hydraulic oil from overflowing; the sealing collar 540 adopts a flexible sealing collar to achieve rapid assembly by utilizing its flexibility and elasticity.

[0023] Example

[0024] As Figure 1Taking the hydraulic pipe network system shown as an example, the components of the hydraulic pipe network system include the oil tank 100, the main oil cylinder 200 and the auxiliary oil cylinder 300, and other components include an oil pump 610, an electromagnetic overflow valve 620, a pressure gauge 630, a first check valve 640, a second check valve 650, a first solenoid valve 660, a second solenoid valve 670, a first hydraulically controlled check valve 680 and a second hydraulically controlled check valve 690.

[0025] When troubleshooting the above hydraulic pipe network system, troubleshoot in the order of outside first and inside second, and follow the steps below to troubleshoot:

[0026] S1, first check the main oil cylinder 200, close the first shut-off valve 401, the second shut-off valve 402 and the eighth shut-off valve 408, if the hydraulic system pressure is normal, it is determined that the main oil cylinder 200 is faulty, if there is no pressure or low pressure in the hydraulic system, check the auxiliary oil cylinder 300;

[0027] S2, check the auxiliary oil cylinder 300, close the seventh shutoff valve 407, open the eighth shutoff valve 408, and then close the third shutoff valve 403 and the fourth shutoff valve 404. If the pressure of the hydraulic system is normal, it is determined that the auxiliary oil cylinder 300 is faulty. If there is no pressure or low pressure in the hydraulic system, check the main oil circuit;

[0028] S3, first close the fifth shut-off valve 405 to eliminate the faults of the oil pump 610 and the electromagnetic overflow valve 620. If there is pressure during the test run, it proves that the oil removal pump 610 and the electromagnetic overflow valve 620 are not faulty. If there is no pressure during the test run, check the oil removal pump 610 and the electromagnetic overflow valve 620;

[0029] S4, close the sixth shutoff valve 406. During the test run, it should be noted that there is no electromagnetic overflow valve 620 at this time. During the test run, it can only be operated instantaneously. Otherwise, if the oil pump 610 is not faulty, the pressure will rise suddenly, which will damage the oil pump 610 or the pipeline. If there is pressure during the test run, it proves that the electromagnetic overflow valve 620 is faulty. If there is no pressure during the test run, it proves that the oil pump 610 is faulty.

[0030] S5. If the oil pump 610 and the electromagnetic relief valve 620 are both normal, open the fifth shut-off valve 405 and the sixth shut-off valve 406, and close the seventh shut-off valve 407 and the eighth shut-off valve 408. If there is no pressure during the test run, eliminate the leakage fault of the first check valve 640. If there is pressure during the test run, check whether there is leakage in the first check valve 640.

[0031] S6. If the first check valve 640 has no fault, open the fifth shutoff valve 405 and the sixth shutoff valve 406, and close the seventh shutoff valve 407 or the eighth shutoff valve 408. If there is pressure during the test run, it proves that there is no fault in the auxiliary oil cylinder range pipeline system. If there is no pressure during the test run, it proves that there is a fault in the auxiliary oil cylinder range pipeline system.

[0032] S7. If there is a fault in the auxiliary oil cylinder range pipeline system, close the fourth shut-off valve 404 and the thirteenth shut-off valve 413. If there is pressure during the test run, it proves that the second solenoid valve 670 is not faulty. If there is no pressure during the test run, it proves that there is a leakage fault in the second solenoid valve 670.

[0033] S8, if the second solenoid valve 670 has no fault, it is not necessary to open the fourth shut-off valve 404, because it is directly connected to the lower chamber of the auxiliary oil cylinder 300, and any leakage between the pipeline and the joint can be directly observed visually, and the thirteenth shut-off valve 413 is opened. If there is no pressure during the test run, it is determined that the second check valve 650 has a leakage fault. If there is pressure during the test run, it is proved that the second check valve 650 has no fault;

[0034] S9. If there is no fault in the auxiliary oil cylinder range pipeline system, check the main oil cylinder range pipeline system in the same way, open the seventh shut-off valve 407, and close the ninth shut-off valve 409 and the tenth shut-off valve 410 at the same time. If there is pressure during the test run, the fault of the first solenoid valve 660 is eliminated. If there is no pressure during the test run, it proves that there is a leakage fault in the first solenoid valve 660.

[0035] S10. If the first solenoid valve 660 has no fault, open the ninth shut-off valve 409 and the tenth shut-off valve 410, and close the eleventh shut-off valve 411 at the same time. If there is pressure during the test run, the fault of the second hydraulically controlled one-way valve 690 is eliminated. If there is no pressure during the test run, close the twelfth shut-off valve 412. If there is pressure during the test run again, the fault of the first hydraulically controlled one-way valve 680 is eliminated. It can be determined that there is a leakage fault in the pipeline near the twelfth shut-off valve 412, which can be eliminated through inspection and repair. If there is no pressure during the test run, it proves that there is a leakage fault in the first hydraulically controlled one-way valve 680.

[0036] Through the above maintenance steps, the fault of the entire hydraulic pipe network system can be eliminated and determined. After maintenance, all the shut-off valves are opened to restore the system.

Claims

1. A hydraulic pipe network system for quickly determining faults, characterized in that: The invention comprises an oil tank (100), a main oil cylinder (200) and an auxiliary oil cylinder (300), wherein the oil tank (100) is connected to the main oil tank (100) and the auxiliary oil cylinder (300) respectively through a pipeline (500); and further comprises a plurality of components respectively arranged at different positions of the pipeline (500), wherein the pipeline (500) comprises a plurality of pipeline sections, and the pipeline sections connected to the oil tank (100), the main oil cylinder (200) and the auxiliary oil cylinder (300) and the pipeline sections located between adjacent components are all detachably connected with a cut-off valve (400).

2. The hydraulic pipe network system for rapid fault determination according to claim 1, characterized in that: The cut-off valve (400) is threadedly connected to the corresponding pipeline section.

3. The hydraulic pipe network system for rapid fault determination according to claim 2, characterized in that: The end of the cut-off valve (400) is provided with an internal thread hole, and the end of the pipeline section in the pipeline (500) connected to the cut-off valve (400) is provided with an external thread; and a high-temperature resistant sealing ring (510) and a metal sealing ring (520) are also provided at the connection between the pipeline section and the cut-off valve (400).

4. The hydraulic pipe network system for rapid fault determination according to claim 3, characterized in that: The metal sealing ring (520) abuts against the end face of the pipe section, the high temperature resistant sealing ring (510) abuts against the bottom face of the internal threaded hole of the shut-off valve (400), and the metal sealing ring (520) abuts against the high temperature resistant sealing ring (510).

5. The hydraulic pipe network system for rapid fault determination according to claim 1, characterized in that: The cut-off valve (400) is a normally open cut-off valve.

6. The hydraulic pipe network system for rapid fault determination according to claim 1, characterized in that: An annular fixing groove (530) is also provided on the outer peripheral surface of the pipeline section near the end. When the shut-off valve (400) is connected to the pipeline section, the inner wall of the fixing groove (530) is flush with the end surface of the shut-off valve (400) in the vertical direction. A sealing ring (540) is sleeved on the pipeline section. The bottom of the sealing ring (540) is inserted into the fixing groove (530) to form a chimeric fit. The top of the sealing ring (540) is bent toward the shut-off valve (400) and sleeved on the end of the shut-off valve (400).

7. The hydraulic pipe network system for rapid fault determination according to claim 6, characterized in that: The sealing ring (540) is a flexible sealing ring.

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