CN108492962A - Locomotive transformer automatic exhaust device, system and method - Google Patents

Abstract

The present invention relates to the technical field of locomotive maintenance, in particular to an automatic exhaust device, system and method for a locomotive transformer. The valve stem connected with the floating ball, the piston connected with the valve stem; the airtight box is provided with an exhaust hole matched with the piston; the lower part of the airtight box is provided with an installation joint communicating with the outlet of the transformer exhaust valve. The invention realizes the automatic exhaust function through the floating ball arranged in the airtight box; the automatic exhaust device is arranged at the exhaust port of the transformer exhaust valve to realize the automatic discharge of the gas in the circulating oil circuit of the transformer body, which reduces labor intensity, Improve the quality of circulating exhaust; and the working process is easy to trace, and has the characteristics of saving time and effort, convenient operation, reducing the waste of human resources, and is stable and reliable, and the use effect is good; the automatic exhaust method in the present invention is simple to operate and easy to implement .

Description

Locomotive transformer automatic exhaust device, system and method

technical field

The invention relates to the technical field of locomotive maintenance, in particular to an automatic exhaust device, system and method for a locomotive transformer.

Background technique

When the electric locomotive is filled with oil after the circulation pipeline of the transformer oil pump is connected, there will be air mixed into the transformer oil. If the air in the transformer oil is not removed, the high voltage of the transformer will break down the air bubbles in the transformer oil when the transformer is working, resulting in transformer failure. , The air gathered at the oil pump and radiator will affect the oil circulation and heat dissipation. The transformer needs to be exhausted. Due to the complex structure of the transformer and the viscosity of the transformer oil, the transformer oil needs to be exhausted in a circular manner. The exhaust action is: open the exhaust valve and observe the exhaust port. After exhausting, close the exhaust valve. At present, the general cycle and exhaust operations are carried out by personnel on duty, timing switch oil pumps, and exhaust. The whole process relies on the operator's self-consciousness to ensure quality and consumes a lot of human resources.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides an automatic exhaust device, system and method for a locomotive transformer, which is scientific and reasonable in design, convenient and reliable, and saves time and effort.

According to the design scheme provided by the present invention, an automatic exhaust device for a locomotive transformer includes a closed box with an exhaust inner cavity, a floating ball located in the closed box, a valve stem connected to the floating ball, and a valve stem connected to the valve. The rod is connected to the piston; the airtight box is provided with an exhaust hole matched with the piston; the lower part of the airtight box is provided with an installation joint communicating with the outlet of the transformer exhaust valve.

As mentioned above, the exhaust hole is provided with an exhaust pipe used to cooperate with the piston during the exhaust process, and the exhaust pipe is sealed and fixed with the airtight box.

Preferably, the exhaust pipe includes a round pipe part extending outside the airtight box, and a tapered pipe arranged in the airtight box; the diameter of one end of the tapered pipe is larger than the diameter of the other end, and the tapered The other end of the tube communicates with the circular tube part.

As mentioned above, the floating ball is connected with the valve stem through a link mechanism.

Preferably, the connecting rod structure includes a balance connecting rod. One end of the balance connecting rod is connected to the floating ball through a rigid rod, and the other end is rotatably connected to the fulcrum on the inner wall of the closed box; the valve rod is fixed to the middle area of the balance connecting rod.

An automatic exhaust system for a locomotive transformer, comprising an exhaust valve arranged on a circulating oil circuit of a transformer, an exhaust port is arranged on the exhaust valve, and the above-mentioned automatic exhaust device for a locomotive transformer is installed at the exhaust port.

The above-mentioned system also includes a controller connected to the transformer oil pump; the controller controls the opening and closing of the transformer oil pump through preset program parameters.

In the above-mentioned system, the power input end of the automatic exhaust device of the locomotive transformer is connected to the three-phase power supply, and the power output end is connected to the power supply of the transformer oil pump.

An automatic exhaust method for a locomotive transformer, which is realized based on the above-mentioned automatic exhaust system for a locomotive transformer. After each opening and closing operation, the time length of each cycle time period and the resting time period increases by N in turn, where N is a time length greater than 10 minutes.

In the above method, the N is preset for 30 minutes.

Beneficial effects of the present invention:

In the present invention, the automatic exhaust device has simple structure, scientific and reasonable design, and the automatic exhaust function is realized by the floating ball arranged in the airtight box and the piston at the exhaust hole moving up and down; the automatic exhaust device is arranged in the transformer row At the exhaust port of the air valve, the automatic discharge of gas in the circulating oil circuit of the body transformer is realized. Compared with the existing method of realizing circulating exhaust through manual control, the scheme of the present invention reduces labor intensity and improves the quality of circulating exhaust; and the working The process is easy to trace, has the characteristics of saving time and effort, and is convenient to operate, reduces the waste of human resources, is stable and reliable, and has good use effect; the automatic exhaust method in the present invention is easy to operate and easy to realize.

Description of drawings:

Fig. 1 is the structural representation of automatic exhaust device in the embodiment;

Fig. 2 is the schematic diagram of circulating oil circuit of locomotive transformer in the embodiment;

Fig. 3 is an electrical schematic diagram of the automatic exhaust system controller in the embodiment.

Detailed ways:

Numbers in the figure, number 1 stands for transformer, number 2 stands for oil circulation pipeline, number 3 stands for fuel tank, number 4 stands for relay, number 5 stands for radiator, number 6 stands for oil pump, number 7 stands for outlet of exhaust valve, number 8 stands for Exhaust hole, the number 9 represents the floating ball, the number 10 represents the linkage mechanism, and the number 11 represents the installation joint.

The present invention will be described in further detail below in conjunction with the accompanying drawings and technical solutions, and the implementation of the present invention will be described in detail through preferred embodiments, but the implementation of the present invention is not limited thereto.

Embodiment 1, referring to Figure 1, an automatic exhaust device for a locomotive transformer, comprising a closed box with an exhaust inner cavity, a floating ball located in the closed box, a valve stem connected to the floating ball, and The valve rod is connected to the piston; the airtight box is provided with an exhaust hole matched with the piston; the lower part of the airtight box is provided with an installation joint communicating with the outlet of the transformer exhaust valve. Through the floating ball set in the airtight box, the piston at the exhaust hole moves up and down to realize the automatic exhaust function.

In order to achieve a better exhaust effect, the exhaust hole is provided with an exhaust pipe used to cooperate with the piston during the exhaust process, and the exhaust pipe is sealed and fixed with the airtight box.

Preferably, the exhaust pipe includes a circular pipe portion extending outside the airtight box, and a tapered pipe arranged in the airtight box; the diameter of one end of the tapered pipe is greater than the diameter of the other end, and the other end of the tapered pipe Connected with the round tube. Tapered or trumpet-shaped exhaust pipe design can better seal with the piston.

As mentioned above, the floating ball is connected with the valve stem through a link mechanism. Through the connecting rod mechanism, the reciprocating motion of the piston driven by the buoyancy of the floating ball can be better realized, and the performance is more stable.

Preferably, the connecting rod structure includes a balance connecting rod. One end of the balance connecting rod is connected to the floating ball through a rigid rod, and the other end is rotatably connected to the fulcrum on the inner wall of the closed box; the valve rod is fixed to the middle area of the balance connecting rod. The buoyancy of the floating ball in the exhaust cavity is transmitted to the balance connecting rod, and the balance connecting rod then drives the piston to move through the valve rod; while the balance connecting rod maintains balance, it can reduce its own influence on the buoyancy of the floating ball, and the use effect is better.

Embodiment 2, as shown in Figures 1 and 2, an automatic exhaust system for a locomotive transformer, including an exhaust valve arranged on the circulating oil circuit of the transformer, an exhaust port is provided on the exhaust valve, and an implementing device is installed at the exhaust port. The locomotive transformer automatic exhaust device described in Example 1. The protection of the locomotive transformer mainly includes oil flow, temperature, pressure, etc. The oil pump is set between the transformer and the radiator. The transformer and the radiator are also equipped with another oil circulation pipeline. The transformer exhaust valve is set on the radiator; the relay is set Between the oil supply tank and the transformer, the failure of the transformer caused by the oil circuit can be better avoided. The automatic exhaust device is installed at the outlet of the transformer exhaust valve to realize the automatic discharge of gas in the circulating oil circuit of the transformer body. Compared with the existing method of realizing circulating exhaust through manual control, the scheme of the present invention reduces labor intensity and improves circulation. Exhaust quality, time-saving and labor-saving, stable and reliable.

In order to facilitate automatic control, it also includes a controller connected to the exhaust valve; the opening and closing of the exhaust valve is controlled by preset exhaust parameters in the controller, so as to avoid exhaust failure caused by the operator's low self-consciousness. Avoid consuming a lot of human resources.

Referring to Fig. 3, the power input end of the automatic exhaust device of the locomotive transformer is connected to the three-phase power supply, and the power output end is connected to the power supply of the transformer oil pump. The three-phase power supply can be used for the existing three-phase power supply in the factory building, and local materials can be used to save time and effort.

Based on the above-mentioned system, an embodiment of the present invention also provides a method for automatic exhausting of a locomotive transformer, which includes the following content: pre-setting each cycle time period, resting time period and its sequence, opening and closing the transformer oil pump, and The gas will be automatically removed. After each opening and closing operation, the time length of each cycle time period and the rest time period increases by N in turn, where N is a time length greater than 10 minutes.

According to the experience value in the actual use process, N is preset as 30min.

Due to the complex structure of the transformer and the viscosity of the transformer oil, the transformer oil is circulated and exhausted to further verify the technical solution of the present invention, and the following parameters of the exhaust to be circulated are tested:

Exhaust---circulate for 30min---stop the oil pump and stand for 30min---exhaust---cycle for 1h---stand for 1h---exhaust---cycle for 2h---stand for 48h--- exhaust.

In the present invention, the automatic exhaust system is connected in series between the three-phase power supply and the transformer oil pump power supply. After the connection is completed, it can be started to realize the automatic circulation and static work of the transformer oil. When there is gas in the automatic exhaust device, the floating ball falls, and the connecting rod mechanism drives the valve to open the exhaust port. As the gas is discharged, the transformer oil level rises. When it reaches a certain height, the floating ball drives the valve to close through the connecting rod mechanism. Air vent to prevent transformer oil from overflowing. After the whole cycle, standing, and exhaust process are completed, the automatic exhaust device can be removed to realize the automatic discharge of gas; compared with the existing manual operation to achieve circular exhaust, the labor intensity is greatly reduced, and the quality of circular exhaust is improved. , and save time and effort, easy to operate, good use effect.

The present invention is not limited to the specific embodiments described above, and those skilled in the art can also make various changes accordingly, but any changes that are equivalent or similar to the present invention should be covered within the scope of the claims of the present invention.

Claims (10)

1. a kind of locomotive transformer automatic exhaust device, which is characterized in that comprising the closed case equipped with exhaust inner cavity, and be set to Floating ball in closed case, the valve rod being connect with floating ball, the piston being connect with valve rod；It is provided with and lives in the closed case Fill in the gas vent of cooperation；Closed case lower part is provided with the erection joint with transformer air bleeding valve outlet.

2. locomotive transformer automatic exhaust device according to claim 1, which is characterized in that the gas vent is provided with For the exhaust pipe with piston cooperation in exhaust process, exhaust pipe is fixed with closed case sealing.

3. locomotive transformer automatic exhaust device according to claim 2, which is characterized in that the exhaust pipe includes to prolong Extend to the pipe portion outside closed case, and the conical pipe in closed case；It is another that conical pipe one end caliber is more than it One end caliber, the conical pipe other end are connected to pipe portion.

4. locomotive transformer automatic exhaust device according to claim 1, which is characterized in that the floating ball passes through connecting rod Mechanism is connect with valve rod.

5. locomotive transformer automatic exhaust device according to claim 4, which is characterized in that the link mechanism includes Balanced connecting rod, balanced connecting rod one end are connect by rigid rod with floating ball, and the other end is rotatablely connected with closed case inner wall fulcrum；Valve Bar is fixed with balanced connecting rod central region.

6. a kind of locomotive transformer automatic exhaust system, including the air bleeding valve on transformer circulating oil path is set to, on air bleeding valve It is provided with exhaust outlet, which is characterized in that the exhaust ports are equipped with claim 1 ~ 5 any one of them locomotive transformer Automatic exhaust device.

7. locomotive transformer automatic exhaust system according to claim 1, which is characterized in that also include to be connect with air bleeding valve Controller；The controller controls the keying of transformer oil pump by presetting exhaust parameter.

8. locomotive transformer automatic exhaust system according to claim 1, which is characterized in that locomotive transformer is vented automatically Installation's power source input terminal is connect with three phase mains, and power output end is connect with transformer oil pumping source.

9. a kind of automatic method for exhausting of locomotive transformer, which is characterized in that become based on claim 6 ~ 8 any one of them locomotive Depressor automatic exhaust system realizes, realization process include following content preset each circulation time section and time of repose section and Its sequence, transformer oil pump is opened and closed according to preset each circulation time section and time of repose section and its sequence, is opened every time After closed operation, the time span of each circulation time section and time of repose section successively increases N, wherein N is the time more than 10min Length.

10. the automatic method for exhausting of locomotive transformer according to claim 9, which is characterized in that the N is to preset 30min.