CN210513534U

CN210513534U - Hydraulic device capable of checking pressure gauge without power failure

Info

Publication number: CN210513534U
Application number: CN201921462478.0U
Authority: CN
Inventors: 苏剑锋; 张津; 缪高策; 李佳睿; 林顺生; 欧阳广泽; 张晓春; 田康; 何必翔; 赵海; 丁宇洁; 刘瑞贵; 胡诚; 赵松; 赵宗庆; 赵猛; 曹伟; 黄奇; 熊忠全
Original assignee: Guizhou Power Grid Co Ltd
Current assignee: Guizhou Power Grid Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-05-12
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses a can not have a power failure to check up hydraulic means of manometer and check-up method thereof, include low-pressure oil tank and the high-pressure system through defeated oil pipe way connection, install the manometer on the defeated oil pipe way, install first ooff valve on the defeated oil pipe way of manometer and high-pressure system, install the second ooff valve on the defeated oil pipe way between manometer and the low-pressure oil tank, be connected with the check-up takeover on the defeated oil pipe way between first ooff valve and the second ooff valve, install the third ooff valve on the check-up takeover, install the check-up device quick-operation joint on the check-up takeover. The calibration of the pressure gauge can be carried out under the state without power failure, the pressure gauge does not need to be disassembled and assembled, the calibration efficiency is improved, and the calibration device is quick and convenient to connect.

Description

Hydraulic device capable of checking pressure gauge without power failure

Technical Field

The utility model relates to a circuit breaker technical field especially relates to a circuit breaker hydraulic means that can check up the manometer without power failure.

Background

The hydraulic mechanism has the advantages of large operating power and stable operation, is generally applied to 220kV and above high-voltage circuit breakers, and is generally provided with pressure gauges for monitoring the pressure of the whole hydraulic mechanism in real time so as to ensure the use safety; this manometer needs regularly to develop the check-up work, need during the check-up have a power failure with the circuit breaker, and the manometer is pulled down after release hydraulic pressure mechanism pressure, installs the manometer again after the check-up is accomplished. The manometer check-up work efficiency of current circuit breaker hydraulic pressure mechanism is low, and dismouting work is troublesome, and equipment power off time is long, if the installation quality is not good still can cause the joint oil leakage, influences the normal work of circuit breaker.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can not have a power failure check-up pressure gauge's hydraulic means, fine solution above-mentioned problem, can carry out the check-up of manometer under the state that does not have a power failure, and do not need the dismouting manometer, improved check-up efficiency, it is convenient fast that the check-up device is connected.

The technical scheme of the utility model a can check up hydraulic means of manometer not have a power failure, include low-pressure fuel tank and the high-pressure system through defeated oil pipe way connection, defeated oil pipe installs the manometer on the road, install first ooff valve on the defeated oil pipe between manometer and the high-pressure system, install the second ooff valve on the defeated oil pipe way between manometer and the low-pressure fuel tank, be connected with the check-up takeover on the defeated oil pipe way between first ooff valve and the second ooff valve, install the third ooff valve on the check-up takeover, install the check-up device quick-operation joint on the check-up takeover.

The utility model has the advantages that:

1. the utility model discloses reequip on the oil pipeline between the low-pressure oil tank of current circuit breaker hydraulic pressure mechanism and high-pressure system, can not change the overall structure of current hydraulic pressure mechanism, simple structure can be convenient carry out the check-up to the manometer on the hydraulic pressure mechanism, and need not have a power failure to the circuit breaker, and need not dismantle the manometer, has improved the check-up efficiency, convenient operation can not cause the oil leakage oil of manometer joint, uses safe and reliable;

2. the check joint is provided with the check device quick connector, so that the check device can be quickly connected with the check joint, the connection efficiency is improved, the connection is more convenient, and the check efficiency of the pressure gauge is further improved.

Drawings

Fig. 1 is a schematic view of a first embodiment of the present invention;

FIG. 2 is a schematic view of a second embodiment of the present invention;

in the figure: 1. an oil pipeline; 2. a low-pressure oil tank; 3. a high pressure system; 4. a pressure gauge; 5. a first on-off valve; 6. a second on-off valve; 7. checking and taking over; 8. a third on-off valve; 9. a quick connector of the checking device; 10. a dust plug; 11. a filter; 12. and connecting a nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows: as shown in fig. 1, the utility model provides a hydraulic means of check-up manometer can not have a power failure, include low-pressure fuel tank 2 and the high-pressure system 3 of connecting through defeated oil pipe way 1, install manometer 4 on the defeated oil pipe way 1, install first ooff valve 5 on the defeated oil pipe way 1 between manometer 4 and the high-pressure system 3, install second ooff valve 6 on the defeated oil pipe way 1 between manometer 4 and the low-pressure fuel tank 2, be connected with check-up takeover 7 on the defeated oil pipe way 1 between first ooff valve 5 and the second ooff valve 6, install third ooff valve 8 on the check-up takeover 7.

The low-voltage oil tank 2 and the high-voltage system 3 are both parts in the existing circuit breaker hydraulic system, and the pressure gauge 4 is mainly used for detecting the real-time pressure of the hydraulic mechanism during working so that an operator can know the working state of the hydraulic mechanism. The conventional calibration method needs the whole hydraulic mechanism to be shut down and closed, then the pressure gauge 4 is disassembled, as the condition of oil leakage is easy to occur when the pressure gauge 4 is disassembled, the loss of hydraulic oil is caused, the pressure of the whole hydraulic mechanism is reduced, in order to ensure the normal operation of the hydraulic mechanism, the hydraulic mechanism can be supplemented subsequently, and is positioned in a narrow space in a mechanism box, when the pressure gauge 4 is disassembled and assembled, the operation is very inconvenient, the oil leakage is very easy, the environment is polluted, and if the operation is carried out under the condition that a breaker is electrified, a very large potential safety hazard exists, so the operation of the pressure gauge 4 is carried out under the condition of power failure, the safety is ensured under the condition of power failure, the normal use of equipment is influenced, and the working efficiency is reduced; and dust, impurities and the like are easy to leak into the oil conveying pipeline 1, so that the hydraulic oil is polluted. And the utility model discloses when needs check-up to manometer 4, operating personnel only need switch three ooff valve in proper order, connect the check-up device and can accomplish manometer 4's check-up, and whole circuit breaker need not to have a power failure, and manometer 4 also need not demolish. The operation of operating personnel in the mechanism case is just carried out the switch of three ooff valve, and calibration equipment's installation is on calibration takeover 7, and calibration takeover 7 has certain length, and exists alone, compares with dismantling manometer 4 on defeated oil pipe way 1, and it is more convenient to operate, can not have the condition of oil leakage oil, and after the operating space increase, also reduced the condition that potential safety hazard and dust impurity leaked into.

And a quick connector 9 of a checking device is arranged on the checking connecting pipe 7. The quick connector 9 of the checking device is matched with the checking device, and the existing quick connector, such as the quick connector with the connecting nut 12, can be adopted, so that the assembly and disassembly are very convenient. Be provided with dustproof stopper 10 on the calibration equipment quick-operation joint 9, dustproof stopper 10 seals calibration equipment quick-operation joint 9 when not carrying out the 4 calibration of manometer, prevents that dust etc. from getting into the calibration takeover 7, when needing to install the calibration equipment, only need take off dustproof stopper 10 can, dustproof stopper 10 generally is plastics material or threaded metal end cap.

Manometer 4 installs on defeated oil pipe way 1 through coupling nut 12, and coupling nut 12 makes things convenient for the installation of manometer 4 to dismantle the change, is convenient for operate in the narrow and small space of mechanism case.

The first switch valve 5, the second switch valve 6 and the third switch valve 8 are all pressure valves, and the oil pipeline 1 is also a pressure pipeline. All have certain pressure in the whole hydraulic pressure mechanism, so defeated oil pipe way 1 and ooff valve all have certain pressure, compare with general valve, the utility model discloses a pressure valve has better compressive capacity.

In the second embodiment, as shown in fig. 2, in the first embodiment, the oil delivery pipe 1 between the first on-off valve 5 and the low-pressure oil tank 2 is higher than the highest position of the low-pressure oil tank 2. The check connection pipe 7 is higher than the highest position of the low-pressure oil tank 2. When carrying out the 4 verifications of manometer, need release remaining hydraulic oil in the defeated oil pipe way 1 earlier, hydraulic oil can flow towards low-pressure fuel tank 2 under the effect of pressure and gravity, in order to make hydraulic oil flow rapider and more thorough, set up the defeated oil pipe way 1 between being less than first ooff valve 5 and second ooff valve 6 with the position of low-pressure fuel tank 2, the position of low-pressure fuel tank 2 is also less than verification takeover 7 simultaneously, make things convenient for hydraulic oil in defeated oil pipe way 1 between first ooff valve 5 and the second ooff valve 6 and the verification takeover 7 to flow into in low-pressure fuel tank 2.

Install filter 11 on the check-up takeover 7, filter the hydraulic oil in the check-up takeover 7 of filter 11 front end, nearly check-up device quick-operation joint 9 end promptly, prevent that the dust impurity that produces or bring into when the check-up device is installed from entering into defeated oil pipe way 1 and going, has avoided the pollution of hydraulic oil.

It is specific based on the utility model discloses can not have a power failure to check up the manometer calibration method of hydraulic means of manometer, including the step:

1) closing the first switch valve and the third switch valve, opening the second switch valve, and releasing the hydraulic oil remained in the oil pipeline into the low-pressure oil tank;

2) after the residual hydraulic oil in the oil pipeline is discharged, closing the first switch valve, the second switch valve and the third switch valve, connecting the pressure gauge calibration device with the calibration connecting pipe, and opening the third switch valve to calibrate the pressure gauge;

3) and after the pressure gauge is checked, closing the third switch valve, removing the pressure gauge checking device, and opening the first switch valve and the second switch valve for resetting.

That is, when the hydraulic mechanism is operating normally, the first and second switching valves are in the open state, and the third switching valve is in the closed state. In the step 3), the second switch valve is opened first, then the first switch valve is opened, and when the first switch valve is opened, the speed is slow as much as possible, so that the pressure gauge is prevented from being damaged due to the fact that hydraulic oil in a high-pressure system quickly impacts the pressure gauge in a high-pressure state.

The switch valves are required to be switched in sequence, the calibration of the pressure gauge can be completed by connecting the calibration device, the equipment does not need to be powered off, the pressure gauge can be calibrated on line without being detached, the operation is simple and reasonable, the calibration is accurate, and the efficiency is high. And the hydraulic oil in the hydraulic mechanism can not be lost, the pressure of the whole hydraulic mechanism can not be reduced, and the influence on the normal work of the circuit breaker is avoided.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. The utility model provides a can not have a power failure check-up pressure gauge's hydraulic means, includes low-pressure fuel tank (2) and high-pressure system (3) connected through defeated oil pipe way (1), its characterized in that: install manometer (4) on defeated oil pipe way (1), install first ooff valve (5) on defeated oil pipe way (1) between manometer (4) and high-pressure system (3), install second ooff valve (6) on defeated oil pipe way (1) between manometer (4) and low-pressure fuel tank (2), be connected with check-up takeover (7) on defeated oil pipe way (1) between first ooff valve (5) and second ooff valve (6), install third ooff valve (8) on check-up takeover (7), install check-up device quick-operation joint (9) on check-up takeover (7).

2. The hydraulic apparatus for calibrating a pressure gauge without power outage of claim 1, wherein: and a dustproof plug (10) is arranged on the quick connector (9) of the checking device.

3. The hydraulic apparatus for calibrating a pressure gauge without power outage of claim 1, wherein: and a filter (11) is arranged on the verification connecting pipe (7).

4. Hydraulic device for checking a pressure gauge (4) without stopping the power supply according to claim 1, characterized in that: the pressure gauge (4) is arranged on the oil pipeline (1) through a connecting nut (12).

5. The hydraulic apparatus for calibrating a pressure gauge without power outage of claim 1, wherein: the first switch valve (5), the second switch valve (6) and the third switch valve (8) are all pressure valves.

6. The hydraulic apparatus for calibrating a pressure gauge without power outage of claim 1, wherein: and the oil conveying pipeline (1) between the first switch valve (5) and the low-pressure oil tank (2) is higher than the highest position of the low-pressure oil tank (2).

7. The hydraulic apparatus for calibrating a pressure gauge without power outage of claim 1, wherein: the check connecting pipe (7) is higher than the highest position of the low-pressure oil tank (2).