CN210221399U

CN210221399U - Harmonious locomotive main transformer test process equipment

Info

Publication number: CN210221399U
Application number: CN201921229586.3U
Authority: CN
Inventors: Qun Wang; 王群
Original assignee: Luoyang Botai Locomotive Equipment Co Ltd
Current assignee: Luoyang Botai Locomotive Equipment Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-03-31
Anticipated expiration: 2029-07-31

Abstract

The utility model relates to a transformer oil pressure leak test field discloses harmonious locomotive main transformer test process equipment. The utility model has the advantages of it is following and effect: survey base, safety device and master control platform including oil pressure unit, transformer, its characterized in that: oil pressure equipment includes the oil pressure pipeline, and the oil pressure pipeline is used for linking to each other oil pressure equipment and harmonious locomotive main transformer, safety device sets up on the oil pressure pipeline, it is used for placing harmonious locomotive main transformer to survey the base, the operation of oil pressure equipment and safety device can be controlled to the master control platform, the utility model discloses to harmonious locomotive main transformer characteristics improved experimental apparatus, the ingenious principle of having utilized gravity not only can make oil supplementing, two processes of examination leak unite two into one, has still alleviateed the complexity of examination leak test experiment greatly, has improved the security of experiment, has reduced workman's work burden, makes the examination leak test of harmonious locomotive become more reliable safe high-efficient swift.

Description

Harmonious locomotive main transformer test process equipment

Technical Field

The utility model relates to a transformer leakage test technical field, in particular to harmonious locomotive main transformer test process equipment.

Background

The transformer is a welding structural part in the power industry, the shape of a welding seam of a transformer oil tank is complex, the length of the welding seam is long, and transformer oil needs to be additionally arranged when the transformer is used, so that whether the oil tank leaks or not needs to be detected before the transformer leaves a factory and is overhauled, the manufacturing and overhauling quality of the transformer is guaranteed, and the transformer can run safely and reliably. According to the regulations of GB6451-2008 technical parameters and requirements of oil-immersed power transformers, leakage testing should be performed before a transformer with voltage of more than 10kV leaves a factory in order to ensure the sealing performance of an oil tank and an oil conservator and find leaked oil points as soon as possible, and currently, common methods include water pressure testing, air pressure testing and the like.

The patent document No. CN201710964081.0 provides a leakage test device and a leakage test method for a transformer oil tank, and the device is characterized in that a transformer is hung on a support, and then a sealing plate is installed to perform a hydraulic pressure experiment. The method is inconvenient to use on a main transformer of a harmonious locomotive: firstly, the main transformer of the harmonious locomotive has heavy weight and is not stable enough when being arranged on a bracket, and the safety of workers for bottom detection is difficult to ensure; secondly, moisture cannot be contained in the transformer, and residual moisture in the experiment can generate bubbles and even can cause the breakdown accident of the transformer, so that the leakage test of the general transformer needs to be thoroughly dried, and the main transformer of the harmonious locomotive has large volume and is difficult to dry; finally, the main transformer of the harmonious locomotive is large in size and complex in shape, so that the detection time in a leakage test is long, and the leakage test effect cannot be achieved due to the fact that the small air holes of the welding seams are not easy to detect and process under the working condition that a certain pressure is not maintained.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a harmonious locomotive main transformer test process equipment has the effect that conveniently carries out the oil pressure leakage test on harmonious locomotive main transformer.

The above technical purpose of the present invention can be achieved by the following technical solutions: harmonious locomotive main transformer test process is equipped, including oil pressure unit, detection base, safety device and total control platform, oil pressure unit includes the oil pressure pipeline, and the oil pressure pipeline is used for linking to each other oil pressure unit and harmonious locomotive main transformer, safety device sets up on the oil pressure pipeline, it is used for placing harmonious locomotive main transformer to survey the base, the operation of oil pressure unit, detection base and safety device can be controlled to the total control platform.

The utility model discloses a further set up to: the oil pressure device comprises an oil storage barrel, the tail end of the oil pressure pipeline is provided with an oil pressure gauge, a right-angle cock and a quick connector, and the oil pressure pipeline is communicated with the transformer to be tested through the quick connector

Through adopting above-mentioned technical scheme, the oil storage bucket is placed and is utilized the gravity principle to the inside oil pressure that produces the regulation of transformer tank on the high support of predesign, carries out the leakage test to transformer tank.

The utility model discloses a further set up to: a high liquid level sensor and a low liquid level sensor are arranged in the oil storage barrel, and a constant pressure valve is arranged on the oil storage barrel.

By adopting the technical scheme, the pressure condition in the oil storage tank can be closely monitored, and the constant pressure valve can be opened to automatically release pressure when necessary, so that safety accidents are prevented;

the utility model discloses a further set up to: the low liquid level sensor and the high liquid level sensor are connected with a master control console, and the constant pressure valve is a pneumatic valve and is controlled by the master control console.

Through adopting above-mentioned technical scheme, can make the workman accomplish the operation on ground, needn't repeat upstairs and downstairs, set up the constant pressure valve and be in order to carry out balanced atmospheric pressure when experimental, can seal after stable, avoid transformer oil to float and scatter, influence the workman healthy, pneumatic valve safe and reliable.

The utility model discloses a further set up to: the safety device comprises a passive pressure relief pipeline and an active pressure relief pipeline which are communicated with each other through the oil pressure pipeline, and a pressure relief oil tank which is communicated with the passive pressure relief pipeline and the active pressure relief pipeline, wherein an active pressure relief valve is arranged on the active pressure relief pipeline, a safety valve is arranged on the passive pressure relief pipeline, and an oil delivery pipe is arranged on the pressure relief oil tank.

By adopting the technical scheme, when the detection is finished or the uncontrollable oil leakage occurs to the main transformer of the harmonious locomotive, the active pressure release valve can be opened to quickly release the pressure, and when the system exceeds the design allowable pressure due to an accident, the passive pressure release valve is automatically opened to quickly reduce the pressure and avoid the further expansion of the accident; the active pressure relief valve can be opened to safely and quickly reduce the pressure in the equipment at the end of the experiment.

The utility model discloses a further set up to: the pressure relief oil tank is connected with the oil supplementing pipe, the oil supplementing pump is arranged on the oil supplementing pipe, and the oil supplementing valve is arranged on the oil supplementing pipe.

Through adopting above-mentioned technical scheme, can recycle the transformer oil that flows out among the pressure release process again, the pressure release oil tank also acts as the oil supply tank simultaneously, can input the oil storage tank with transformer oil through the oil pump again for pressure release oil tank oil supply when supplying transformer oil for the oil storage tank, and the low liquid level switch on the accessible oil storage tank of oil supply work is automatic to be accomplished.

The utility model discloses a further set up to: the active pressure release valve and the oil supplement valve are electric valves, and the oil supplement pump and the oil supplement valve are controlled by the master control console.

By adopting the technical scheme, the operation of each valve and the oil pump can be controlled through the master control console, and the labor burden of workers is reduced.

The utility model discloses a further set up to: the detection base comprises a metal insertion grid, a plurality of hard glass columns inserted on the metal insertion grid, laser transmitters arranged on two adjacent edges of the metal insertion grid and laser receivers arranged on the two adjacent edges of the metal insertion grid and opposite to the laser transmitters; the metal inserting grids are inserted with the hard glass columns, so that a gap with the width of one millimeter is formed between the adjacent hard glass columns.

By adopting the technical scheme, the problem that the bottom surface of the heavy equipment, namely the main transformer of the harmonious locomotive, is not easy to observe is solved.

The technical scheme is particularly suitable for large equipment such as a main transformer of a harmonious locomotive, and the method comprises the steps that firstly, in order to set a detection target, transformer oil is colorless or light yellow transparent liquid and is difficult to directly observe; secondly, in order to pressurize the main transformer of the harmonious locomotive and supplement oil at the same time, two processes of leakage testing and oil supplement are combined into one, and the labor intensity of workers is reduced; step three, the oil column can generate large impact force in the oil injection process, and close attention is needed to prevent accidents; detecting the leakage condition of the main transformer of the harmonic locomotive at regular time to prevent small leakage seams of the product from expanding into large cracks and even damaging the product under the condition of long-term high pressure; and step five, discharging redundant oil in the system, and disconnecting the connection with the main transformer of the harmonious locomotive. And step six, cleaning the main transformer of the harmonious locomotive, and cleaning the equipment after the transformer is separated, thereby completing the detection.

The utility model has the advantages that: compared with common water pressure and air pressure experiments, the utility model has the advantages that the oil pressure leakage test experiment generated by gravity, the detection base for detecting the oil leakage condition of the bottom surface of the main transformer of the harmonious locomotive, the adaptive safety device and the oil pressure device are arranged aiming at the characteristics of the main transformer of the harmonious locomotive, the transformer oil can be directly used for the leakage test, two procedures of oil supplement and leakage test are completed together, and meanwhile, the procedures of drying and the like required by the water pressure experiment are avoided, so that the time and the labor are saved, and meanwhile, no hidden danger is left; the detection base can detect the oil leakage condition of the bottom surface of the main transformer of the harmonious locomotive under the working condition that the transformer is not erected to be high; the leakage test is carried out on the transformer oil tank by skillfully utilizing the oil pressure generated by the potential energy of the transformer oil; the device and the method not only solve the problem that the main transformer of the harmonious locomotive is not suitable in the traditional leakage test method, but also greatly optimize the operation process of the oil pressure test, improve the test efficiency and reduce the labor burden of workers.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a pipeline diagram of the present invention.

Fig. 2 is a schematic structural view of the detection base of the present invention.

Figure 3 is a partial enlarged view of the position A of the detection base

In the figure, 1, a hydraulic device; 11. an oil pressure pipe; 111. an oil pressure gauge; 112. a right-angle cock; 113. a quick connector; 12. an oil storage barrel; 121. supplementing an oil pipe; 1211. an oil replenishing pump; 1212. an oil supply valve; 122. a high level sensor; 123. a constant pressure valve; 124. a low level sensor; 2. a safety device; 21. a passive pressure relief conduit; 211. a safety valve; 22. an active pressure relief duct; 221. an active pressure relief valve; 23. a pressure relief oil tank; 231. an oil delivery pipe; 3. detecting a base; 31. a metal bottom grid; 32. a hard glass column; 33. a laser transmitter; 34. a laser receiver; 4. and a master control console.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments.

In this embodiment, as shown in fig. 1, this experimental apparatus comprises oil pressure device 1, safety device 2, detection base 3 and grand console 4, and oil pressure device 1 links to each other with harmonious locomotive main transformer through oil pressure pipeline 11, and safety device 2 sets up on oil pressure pipeline 11, and harmonious locomotive main transformer places on detecting base 3, and the operation of device is controlled by grand console 4.

The oil pressure device 1 is used for providing the pressure required by the experiment, the oil pressure device 1 is composed of an oil storage tank positioned at the top, the oil storage tank is connected with a main transformer of a harmonious locomotive through an oil pressure pipeline 11, an inlet of the oil pressure pipeline 11 is positioned at the bottom surface of the oil storage tank, the oil storage tank has a certain height, the potential energy generated by transformer oil at the certain height is used for providing the basic pressure for the experiment, a high liquid level sensor 122, a low liquid level sensor 124 and a constant pressure valve 123 are further arranged at the upper end of the oil storage tank, the high liquid level sensor 122 and the low liquid level sensor 124 are used for controlling the liquid level height in the oil tank, the experiment is convenient, the constant pressure valve 123 is used for opening the balance, the constant pressure valve 123 is a pneumatic valve and can be controlled on the ground through the main control console 4, and the workers do not need to go upstairs and downstairs frequently; an oil supplementing pipe 121 is further arranged on the bottom surface of the oil storage tank and used for supplementing transformer oil required by the experiment.

The safety device 2 is used for guaranteeing the safety of the experiment and facilitating the end of the experiment, a passive pressure relief pipeline 21 and an active pressure relief pipeline 22 are arranged at the tail end of the oil pressure pipeline 11, a safety valve 211 is arranged on the passive pressure relief pipeline 21 and can be opened when the pressure of the device exceeds the design pressure to avoid further expansion of the accident, an active pressure relief valve 221 is arranged on the active pressure relief pipeline 22, the active pressure relief valve 221 is an electric valve, and when the main transformer of the tested harmonious locomotive has a leak point or the experiment is ended, the pressure is relieved through the active pressure relief valve 221 to avoid the accident; the outlets of the active pressure relief pipeline 22 and the passive pressure relief pipeline 21 are connected with the pressure relief oil tank 23, the transformer oil is released in the pressure relief oil tank 23 under the action of redundant pressure during pressure relief, an oil delivery pipe 231 is arranged on the pressure relief oil tank 23, the bottom surface of the pressure relief oil tank is connected with the oil compensation pipe 121, the oil compensation pipe 121 is provided with an oil compensation pump 1211 and an oil compensation valve 1212, on one hand, the released transformer oil can be conveyed back to the oil storage tank for next experiment, on the other hand, the transformer oil can be supplemented from the outside through the oil delivery pipe 231, the supplement of the transformer oil from the oil storage tank at a high position is avoided, the working.

In this embodiment, as shown in fig. 2-3, the detection base 3 is used for placing a main transformer of a harmonic locomotive, which has a heavy weight and is difficult to operate, and it is difficult to directly observe the bottom surface through a crane, a truss, etc., the detection base 3 can directly detect whether the bottom surface leaks oil, the main body of the detection base 3 is a metal insert grid, and a plurality of small grids are arranged in the metal insert grid for inserting hard glass columns 32, the interval between the hard glass columns 32 is only one millimeter, the top surface of the hard glass column 32 is also close to the upper surface of the metal insert grid, and the oil leaks from the bottom surface of the main transformer of the harmonic locomotive can be rapidly diffused in the interval between the hard glass columns 32; the hard glass columns 32 on two adjacent sides of the metal insert grid are internally provided with laser transmitters 33, the opposite sides are provided with laser receivers 34, if transformer oil leaks, the transformer oil can diffuse in the hard glass columns 32 at intervals, and the path of the laser can be changed, so that the position of a receiving point is recorded on the master console 4 only when the main transformer of the harmonious locomotive is placed on the detection base 3, and then the master console 4 is used for monitoring whether the position of the receiving point changes or not along with the experimental process, so that whether oil leaks from the bottom surface of the main transformer of the harmonious locomotive can be known; the detection base 3 needs to be kept clean, if oil leakage occurs in the experiment process, oil absorption paper is used for absorbing excessive oil after the experiment is finished, the hard glass block in the polluted area is taken out, the clean hard glass block is replaced, and the polluted hard glass block is cleaned and dried for later use.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Claims

1. Harmonious locomotive main transformer test process equipment, including oil pressure unit (1), survey base (3), safety device (2) and total control platform (4), its characterized in that: oil pressure unit (1) includes oil pressure pipeline (11), and oil pressure pipeline (11) are used for linking to each other oil pressure unit (1) and harmonious locomotive main transformer, safety device (2) set up on oil pressure pipeline (11), survey base (3) and be used for placing harmonious locomotive main transformer, the operation of oil pressure unit (1), survey base (3) and safety device (2) can be controlled in master console (4).

2. The harmonious locomotive main transformer test process equipment of claim 1, which is characterized in that: the oil pressure device (1) comprises an oil storage barrel (12), an oil pressure gauge (111), a right-angle cock (112) and a quick connector (113) are arranged at the tail end of the oil pressure pipeline (11), and the oil pressure pipeline (11) is communicated with a transformer to be tested through the quick connector (113).

3. The harmonious locomotive main transformer test process equipment of claim 2, characterized in that: a high liquid level sensor (122) and a low liquid level sensor (124) are arranged in the oil storage barrel (12), and a constant pressure valve (123) is arranged on the oil storage barrel (12).

4. The harmonious locomotive main transformer test process equipment of claim 3, characterized in that: the low liquid level sensor (124) and the high liquid level sensor (122) are connected with the master control console (4), and the constant pressure valve (123) is a pneumatic valve and is controlled by the master control console (4).

5. The harmonious locomotive main transformer test process equipment of claim 1 or 2, which is characterized in that: safety device (2) include with oil pressure pipeline (11) are linked together passive pressure release pipeline (21) and initiative pressure release pipeline (22), with pressure release oil tank (23) that passive pressure release pipeline (21) and initiative pressure release pipeline (22) are linked together, be provided with initiative relief valve (221) on initiative pressure release pipeline (22), be provided with relief valve (211) on passive pressure release pipeline (21), be provided with defeated oil pipe (231) on pressure release oil tank (23).

6. The harmonious locomotive main transformer test process equipment of claim 5, characterized in that: the pressure relief oil tank (23) is connected with the oil supplementing pipe (121), and an oil supplementing pump (1211) and an oil supplementing valve (1212) are arranged on the oil supplementing pipe (121).

7. The harmonious locomotive main transformer test process equipment of claim 6, which is characterized in that: the active pressure relief valve (221) and the oil supplementing valve (1212) are electrically operated valves, and the oil supplementing pump (1211), the oil supplementing valve (1212) and the active pressure relief valve (221) are controlled by the master control console (4).

8. The harmonious locomotive main transformer test process equipment of claim 1, which is characterized in that: the detection base (3) comprises a metal insertion grid, a plurality of hard glass columns (32) inserted on the metal insertion grid, laser transmitters (33) arranged on two adjacent edges of the metal insertion grid and laser receivers (34) arranged on the two adjacent edges of the metal insertion grid and opposite to the laser transmitters (33); the metal insert grids are inserted with the hard glass columns (32) so that a gap with the width of one millimeter is formed between the adjacent hard glass columns (32).