Automatic exhaust device of industrial silicon furnace transformer on-load voltage regulation light gas relay

Abstract

The utility model discloses an on-load voltage regulation light gas relay automatic exhaust device of an industrial silicon furnace transformer. The on-load voltage regulation light gas relay automatic exhaust device comprises an electromagnetic exhaust valve, a time relay and an exhaust pipe, one end of the exhaust pipe is arranged on a gas relay of an industrial silicon furnace transformer, and the other end is provided with an electromagnetic exhaust valve; the electromagnetic exhaust valve is connected with the time relay; and the time relay is connected with a light gas dry reed contact of the gas relay. The light gas dry reed contact of the gas relay is used for driving the time relay, and then the time relay is used for delayed disconnection of the contact to drive the electromagnetic exhaust valve to exhaust, so that the exhaust time can be adjusted according to the actual operation condition of the transformer of the industrial silicon furnace; gas generated by the action of the on-load tap changer can be completely exhausted at a time by controlling the exhaust time, the gas alarm frequency is reduced, and the problems that in the prior art, the exhaust time is short, the exhaust frequency is high, and the gas alarm frequency is high are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of non-ferrous metal smelting, and particularly relates to an automatic exhaust device for a light gas relay of an on-load tap-changer of an industrial silicon furnace transformer. Background Art

[0002] The statements herein only provide background art related to the utility model and do not necessarily constitute prior art.

[0003] The industrial silicon furnace transformer is a large single-phase transformer and an important electric energy output device of the industrial silicon furnace. When the output voltage needs to be adjusted during the operation of the transformer, it is usually achieved through an on-load tap-changer. When the on-load tap-changer is switched on and off, local arcs are generated to release high temperature, thereby decomposing the transformer oil to produce gas. Since the presence of the gas will pose a hazard to the operation of the transformer, a gas relay exhaust device is installed on the on-load tap-changer of the transformer. The gas relay is installed on the pipeline between the storage tank of the on-load tap-changer and the oil tank. The light gas reed contact of the gas relay is electrically connected to the light gas alarm circuit. When the gas inside the gas relay reaches the set value, an alarm signal is triggered. When a light gas alarm signal appears, it is necessary for the on-site personnel to go to the transformer body for exhaust. However, due to the frequent operation of the on-load tap-changer of the industrial silicon furnace transformer and the large number of transformers, the exhaust operation is cumbersome and large in quantity and there are safety risks. If the exhaust cannot be carried out in time, it will affect the safe operation of the transformer. Therefore, realizing the automatic exhaust of the on-load tap-changer gas relay is of great significance for the safe operation of the transformer.

[0004] The prior art with the application number CN201520621737.5 discloses an automatic exhaust device for an on-load tap-changer gas relay, including a housing. An air pipe is arranged above the housing, and an oil pipe is arranged below. Both the air pipe and the oil pipe are communicated with the relay. An exhaust pipe is arranged above the housing, and an electromagnetic exhaust valve is arranged on the exhaust pipe. A weight and an open cup are arranged inside the housing. The weight and the open cup are connected by a connecting rod. A magnet is arranged in the open cup, and a reed contact is arranged below. The reed contact is electrically connected to the electromagnetic exhaust valve. It can realize the automatic exhaust of the on-load tap-changer gas relay, save manpower and material resources, and improve work efficiency.

[0005] However, the inventor found that the above automatic exhaust device can only achieve point-by-point exhaust. Therefore, there are problems such as short exhaust time, high exhaust frequency, and high gas alarm frequency. Summary of the Utility Model

[0006] The purpose of the present utility model is to overcome the deficiencies existing in the above-mentioned prior art, and to provide an automatic exhaust device for the on-load tap-changer light gas relay of an industrial silicon furnace transformer. By using the light gas reed contacts of the gas relay to drive a time relay, and then using the time relay's delayed disconnection contacts to drive an electromagnetic exhaust valve to exhaust gas, it is possible to adjust the exhaust time according to the actual operating conditions of the transformer. By controlling the exhaust time, the gas generated due to the operation of the on-load tap-changer can be exhausted completely at one time, reducing the frequency of gas alarms and solving the problems of short exhaust time, high exhaust frequency, and high gas alarm frequency existing in the prior art.

[0007] In order to achieve the above purpose, the present utility model is realized through the following technical solutions:

[0008] The technical solution of the present utility model provides an automatic exhaust device for the on-load tap-changer light gas relay of an industrial silicon furnace transformer, including: an electromagnetic exhaust valve, a time relay, and an exhaust pipe; one end of the exhaust pipe is installed on the gas relay of the industrial silicon furnace transformer, and the other end is provided with an electromagnetic exhaust valve; the electromagnetic exhaust valve is connected to the time relay; the time relay is connected to the light gas reed contacts of the gas relay.

[0009] In at least one embodiment, the exhaust pipe is specifically an exhaust copper pipe.

[0010] In at least one embodiment, the gas relay is installed in the oil pipeline between the on-load tap-changer and the oil conservator of the industrial silicon furnace transformer.

[0011] In at least one embodiment, the exhaust pipe is specifically installed at the exhaust hole of the gas relay of the industrial silicon furnace transformer.

[0012] In at least one embodiment, the end of the exhaust pipe is located in the middle position of the industrial silicon furnace transformer body.

[0013] In at least one embodiment, the electromagnetic exhaust valve is specifically a normally closed electromagnetic exhaust valve.

[0014] In at least one embodiment, the time relay is a power-off delay type time relay.

[0015] In at least one embodiment, the connection between the electromagnetic exhaust valve and the time relay is specifically: the electromagnetic exhaust valve is connected to the time relay through an electromagnetic exhaust valve control line.

[0016] In at least one embodiment, the connection between the time relay and the light gas reed contacts of the gas relay is specifically: the time relay is connected to the light gas reed contacts of the gas relay through a gas relay alarm signal line.

[0017] The beneficial effects of the above technical solution of the present utility model are as follows:

[0018] 1) The utility model drives a time relay through the light gas dry reed contact of the gas relay of the industrial silicon furnace transformer, and then uses the time relay delay-disconnecting contact to drive the electromagnetic exhaust valve to exhaust gas, which can adjust the exhaust time according to the actual operation condition of the transformer. By controlling the exhaust time, the gas generated due to the action of the on-load tap-changer can be exhausted completely at one time, reducing the frequency of gas alarm and solving the problems of short exhaust time, high exhaust frequency, high gas alarm frequency, etc. existing in the prior art.

[0019] 2) The utility model installs an exhaust pipe on the exhaust hole of the gas relay of the industrial silicon furnace transformer and sets the end thereof at the middle position of the industrial silicon furnace transformer body, which can lower the position of the original "exhaust hole" located at a high place, facilitating the daily inspection by the staff.

[0020] 3) An automatic exhaust device for the on-load tap-changing light gas relay of the industrial silicon furnace transformer disclosed by the utility model has a simple structure, can be directly installed without changing the structure of the existing equipment, is convenient for construction and has high usability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specification drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and the descriptions thereof are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0022] Figure 1 is a schematic diagram of an automatic exhaust device for the on-load tap-changing light gas relay of the industrial silicon furnace transformer provided by the present utility model.

[0023] In the figure: 1. Gas relay; 2. Gas relay alarm signal wire; 3. Exhaust pipe; 4. Time relay; 5. Electromagnetic exhaust valve; 6. Electromagnetic exhaust valve control wire.

[0024] The distances or dimensions between each part are exaggerated for showing the positions of each part, and the schematic diagram is only for illustration. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] It should be noted that the following detailed descriptions are all illustrative and are intended to provide a further description of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the present utility model clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof; the terms "installed", "connected", "connected", "fixed", etc. in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, and can be an internal connection between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] In a typical embodiment of the present utility model, this embodiment discloses an automatic exhaust device for the on-load tap-changer light gas relay of an industrial silicon furnace transformer, which includes an electromagnetic exhaust valve 5, a time relay 4, and an exhaust pipe 3. One end of the exhaust pipe 3 is installed on the gas relay 1 of the industrial silicon furnace transformer, and the other end is provided with an electromagnetic exhaust valve 5. The electromagnetic exhaust valve 5 is connected to the time relay 4. The time relay 4 is connected to the light gas reed contact of the gas relay 1.

[0029] The exhaust pipe 3 is preferably made of exhaust copper pipe. Since the manual exhaust pipe of the industrial silicon furnace transformer at the factory is made of copper pipe and the transformer oil is flammable, therefore, preferentially selecting a copper pipe for the exhaust pipe can have higher adaptability and safety, and the copper pipe has good flexibility, which is more convenient for installation.

[0030] The gas relay 1 is installed in the oil pipeline between the on-load tap-changer and the oil conservator of the industrial silicon furnace transformer, and discovers abnormal conditions by monitoring the changes of oil and gas inside the industrial silicon furnace transformer, so as to realize the gas protection of the industrial silicon furnace transformer.

[0031] There is an exhaust hole on the gas relay 1. An exhaust pipe 3 is installed at the exhaust hole, and an electromagnetic exhaust valve 5 is installed at the end of the exhaust pipe 3, so that an exhaust channel is formed between the exhaust hole of the gas relay 1 and the electromagnetic exhaust valve 5 through the exhaust pipe, and the gas generated by the local arc generated during the switching of the on-load tap-changer, which decomposes the transformer oil at high temperature, is led to the electromagnetic exhaust valve through the exhaust channel for release.

[0032] In this embodiment, the end of the exhaust pipe 3 is located in the middle of the industrial silicon furnace transformer body, which can lower the position of the original "exhaust hole" at a high place, facilitating the daily inspection by the staff.

[0033] In this embodiment, the electromagnetic exhaust valve 5 is a normally closed electromagnetic exhaust valve and is in a closed state when exhaust is not required. The electromagnetic exhaust valve 5 is connected to the time relay 4 through the electromagnetic exhaust valve control line 6, and the energization and de-energization of the coil of the electromagnetic exhaust valve 5 are controlled by the time relay 4. At the same time, the time relay 4 is connected to the light gas dry reed contact of the gas relay 1 through the gas relay alarm signal line 2, and the energization and de-energization of the coil of the time relay 4 are controlled by the connection and disconnection of the light gas dry reed contact of the gas relay 1.

[0034] The time relay 4 is a power-off delay type time relay. When receiving the alarm signal transmitted by the gas relay alarm signal line 2, the coil of the time relay 4 is energized, and its contacts act instantaneously; after the alarm signal disappears, the time relay 4 delays for a set time, and the contacts are restored to the state before the action.

[0035] During actual operation, when the light gas dry reed contact of the gas relay 1 is closed, the alarm circuit is turned on, triggering an alarm signal. The alarm signal is transmitted to the time relay 4 through the gas relay alarm signal line 2, and the time relay 4 starts. Then, the coil of the electromagnetic exhaust valve 5 is energized to conduct the circuit, and the electromagnetic exhaust valve 5 opens for exhaust. When the set exhaust time is reached, the time relay 4 drives the electromagnetic exhaust valve to close, realizing the automatic exhaust of the on-load tap-changer light gas relay of the industrial silicon furnace transformer.

[0036] Due to the characteristics of the delay-off contacts of the time relay 4, in this embodiment, the light gas dry reed contact of the gas relay is used to drive the time relay, and then the delay-off contacts of the time relay are used to drive the electromagnetic exhaust valve to exhaust. It can adjust the exhaust time according to the actual operation conditions of the industrial silicon furnace transformer. By controlling the exhaust time, the gas generated due to the action of the on-load tap-changer can be exhausted at one time, reducing the frequency of gas alarms.

[0037] The working principle of an automatic exhaust device for the on-load tap-changer light gas relay of an industrial silicon furnace transformer disclosed in this embodiment is as follows:

[0038] Under normal conditions, the light gas dry reed contact of the gas relay 1 of the industrial silicon furnace transformer is in an unclosed state, the coil of the time relay 4 is in a de-energized state, and thus the electromagnetic exhaust valve 5 is in a closed state.

[0039] When the industrial silicon furnace transformer adjusts the output voltage through the on-load tap-changer, the opening and closing of the on-load tap-changer generate local arcs that release high temperatures, decompose the transformer oil in the conservator of the industrial silicon furnace transformer to produce gas, and the generated gas will accumulate in the gas relay 1 through the oil pipeline. When the content of the accumulated gas reaches the action value of the gas relay 1, the light gas dry reed contacts in the gas relay 1 are closed, thereby connecting the alarm circuit and triggering an alarm signal. The alarm signal is transmitted to the time relay 4 through the gas relay alarm signal line 2. The coil of the time relay 4 is energized, and the contacts of the time relay 4 act instantaneously, putting it in a working state, and then controlling the energization of the solenoid exhaust valve 5 coil to connect the circuit. The solenoid exhaust valve 5 opens, and the gas accumulated inside the gas relay is discharged along the exhaust pipe 3.

[0040] When the set exhaust time is reached, the contacts of the time relay 4 are restored, sending a disconnection signal to the solenoid exhaust valve 5, controlling the power-off of the solenoid exhaust valve 5 coil to disconnect the circuit, the solenoid exhaust valve 5 closes, and the exhaust stops, completing the automatic exhaust operation for the set time.

[0041] An automatic exhaust device for the light gas of the on-load tap-changer of an industrial silicon furnace transformer disclosed in this embodiment has a simple structure, can be directly installed without changing the structure of the existing equipment, is convenient for construction, and has high usability. By using the light gas dry reed contacts of the gas relay of the industrial silicon furnace transformer to drive the time relay, and then using the time relay's delay-disconnecting contacts to drive the solenoid exhaust valve to exhaust, it can adjust the exhaust time according to the actual operation conditions of the transformer. By controlling the exhaust time, the gas generated due to the action of the on-load tap-changer can be discharged completely at one time, reducing the frequency of gas alarms, and solving the problems of short exhaust time, high exhaust frequency, and high gas alarm frequency existing in the prior art.

[0042] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic exhaust device for an on-load voltage-regulating light gas relay of an industrial silicon furnace transformer, characterized in that: include: An electromagnetic exhaust valve, a time relay and an exhaust pipe; one end of the exhaust pipe is installed on the gas relay of the industrial silicon furnace transformer, and the other end is provided with an electromagnetic exhaust valve; the electromagnetic exhaust valve is connected to the time relay; the time relay is connected to the light gas reed contact of the gas relay.

2. The automatic exhaust device for the on-load voltage regulating light gas relay of an industrial silicon furnace transformer as claimed in claim 1, characterized in that: The exhaust pipe is specifically an exhaust copper pipe.

3. The automatic exhaust device for the on-load voltage regulating light gas relay of an industrial silicon furnace transformer as claimed in claim 1, characterized in that: The gas relay is installed in the oil pipeline between the on-load voltage regulating switch and the oil pillow of the industrial silicon furnace transformer.

4. The automatic exhaust device for the on-load voltage regulating light gas relay of an industrial silicon furnace transformer as claimed in claim 1, characterized in that: The exhaust pipe is specifically installed at the exhaust hole of the gas relay of the industrial silicon furnace transformer.

5. The automatic exhaust device for on-load voltage regulation light gas relay of industrial silicon furnace transformer as claimed in claim 1, characterized in that: The exhaust pipe end is located in the middle of the industrial silicon furnace transformer body.

6. The automatic exhaust device for on-load voltage regulation light gas relay of industrial silicon furnace transformer as claimed in claim 1, characterized in that: The electromagnetic exhaust valve is specifically a normally closed electromagnetic exhaust valve.

7. The automatic exhaust device for on-load voltage regulation light gas relay of industrial silicon furnace transformer as claimed in claim 1, characterized in that: The time relay is a power-off delay type time relay.

8. The automatic exhaust device for on-load voltage regulation light gas relay of industrial silicon furnace transformer as claimed in claim 1, characterized in that: The electromagnetic exhaust valve is connected to the time relay specifically as follows: the electromagnetic exhaust valve is connected to the time relay via an electromagnetic exhaust valve control line.

9. The automatic exhaust device for on-load voltage regulation light gas relay of industrial silicon furnace transformer as claimed in claim 1, characterized in that: The time relay is connected to the light gas reed contact of the gas relay in detail as follows: the time relay is connected to the light gas reed contact of the gas relay via a gas relay alarm signal line.

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