Remote operation device for transformer oil discharge and nitrogen injection device
By designing a remotely operated transformer oil-exhausted nitrogen injection device, the problem of remote control failure in oil-immersed power transformer fires is solved, and long-distance fire extinguishing is achieved, ensuring the safety of on-site operators and reducing the risk of failure, which is economical.
Patent Information
- Application Number
- CN202420332433.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-22
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-02-22
AI Technical Summary
In the event of a fire in the oil-immersed power transformer, the remote control device fails and the on-site operation is inconvenient, resulting in delayed fire extinguishing and endangering the safety of the operator.
Design a remote operating device for transformer oil discharge and nitrogen injection device. Through operating columns, switches, relays and indicator lights and other components, the oil discharge and nitrogen injection operations of the transformer are realized to ensure that fire is extinguished.
In the event of a fire, operators are allowed to control the fire extinguishing device from a long distance to ensure on-site safety, simplify the circuit structure, reduce the risk of failure, and be economical.
Smart Images
Figure CN222218508U_ABST
Abstract
Description
Technical Field
[0001] The utility model provides a remote operating device for a transformer oil draining and nitrogen injection device, belonging to the technical field of oil-immersed transformer fire extinguishing. Background Art
[0002] Oil-immersed power transformers are large transformers that use oil as the main insulation means of the transformer and rely on oil as a cooling medium. There is a risk of fire. The relevant national standards stipulate that large transformers must be equipped with fire extinguishing devices. When a fire occurs, if the remote control device cannot operate normally, it is necessary to manually start the button of the control fire extinguishing device in the control room of the substation. However, since the fire extinguishing device is close to the main transformer, it is not convenient to operate on site, and the fire cannot be extinguished in time, which will cause accidents, and the safety of on-site operators cannot be guaranteed. Utility Model Content
[0003] In order to solve the technical problem of facilitating on-site operators to remotely operate a fire extinguishing device and improving the safety of on-site operation, the utility model proposes an operating device by which on-site operators can remotely operate a transformer oil draining and nitrogen injection device, and aims to achieve remote operation of the fire extinguishing device by on-site operators through improvements on the hardware structure of the oil-immersed power transformer or improvements on the combined connection of hardware modules and / or circuits.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a remote operating device for a transformer oil draining and nitrogen injection device, comprising an operating column, on which a conversion switch is arranged, one end of the conversion switch is electrically connected to the live wire, the other end of the conversion switch is connected in parallel to one end of a red indicator light, one end of a button SB1, one end of a second normally open contact of a relay KA1, and one end of a button SB2, the other end of the red indicator light is electrically connected to the neutral wire, the other end of the button SB1 is electrically connected to the neutral wire through the coil of the relay KA1, the two ends of the button SB1 are connected in parallel to the first normally open contact of the relay KA1, and the other end of the second normally open contact of the relay KA1 is electrically connected to the neutral wire through the green indicator light;
[0005] The other end of the button SB2 is electrically connected to the neutral line through the coil of the relay KA2, and both ends of the button SB2 are connected in parallel to a normally open contact of the relay KA2;
[0006] A normally open contact of the relay KA1 is electrically connected to an oil drain valve of a transformer oil drain and nitrogen injection device;
[0007] A normally open contact of the relay KA2 is electrically connected to a nitrogen injection valve of the transformer oil draining and nitrogen injection device.
[0008] Furthermore, the model of the operating column is BZC series.
[0009] Furthermore, the model of the transformer oil draining and nitrogen injection device is BPZM-BDM-I.
[0010] Furthermore, the relay KA1 and the relay KA2 are of the 3RH6140 series.
[0011] Furthermore, the nitrogen injection valve of the transformer oil draining nitrogen injection device is connected to an opening valve, the opening valve is connected to a pressure relief valve, the pressure relief valve is connected to a one-way valve, and the one-way valve is connected to a nitrogen injection pipe.
[0012] Compared with the prior art, the utility model has the following beneficial effects: when a fire occurs in the main transformer, if the remote control device cannot operate normally and it is inconvenient to operate on site, the on-site operator can remotely operate the utility model to effectively control the fire extinguishing device of the transformer to extinguish the fire, thereby ensuring the safety of the on-site operator; the utility model has a simple circuit structure, effectively solves the safety hazard problem when the remote control system fails and the on-site operation of the control cabinet is inconvenient, and is economical. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings:
[0014] Figure 1 It is a schematic diagram of the circuit structure of the utility model. DETAILED DESCRIPTION
[0015] like Figure 1 As shown, the utility model provides a remote operating device for a transformer oil draining and nitrogen injection device, comprising an operating column, on which a conversion switch is arranged, one end of the conversion switch is electrically connected to the live wire, the other end of the conversion switch is connected in parallel to one end of a red indicator light, one end of a button SB1, one end of a second normally open contact of a relay KA1, and one end of a button SB2, the other end of the red indicator light is electrically connected to the neutral wire, the other end of the button SB1 is electrically connected to the neutral wire through a coil of the relay KA1, the two ends of the button SB1 are connected in parallel to the first normally open contact of the relay KA1, the other end of the second normally open contact of the relay KA1 is electrically connected to the neutral wire through a green indicator light, the other end of the button SB2 is electrically connected to the neutral wire through the coil of the relay KA2, the two ends of the button SB2 are connected in parallel to a normally open contact of the relay KA2; a normally open contact of the relay KA1 is electrically connected to an oil drain valve of the transformer oil draining and nitrogen injection device; a normally open contact of the relay KA2 is electrically connected to a nitrogen injection valve of the transformer oil draining and nitrogen injection device.
[0016] The model of the operating column is BZC series.
[0017] The relays KA1 and KA2 are of the 3RH6140 series.
[0018] The model of the transformer oil draining and nitrogen injection device is BPZM-BDM-I.
[0019] The nitrogen injection valve of the transformer oil draining nitrogen injection device is connected with an opening valve, the opening valve is connected with a pressure relief valve, the pressure relief valve is connected with a check valve, and the check valve is connected with a nitrogen injection pipe.
[0020] When a fire occurs in the main transformer, if the remote control system cannot operate normally or the on-site operator discovers the fire in the main transformer at the first time, the operator can implement the utility model remotely to effectively reduce the losses caused by the fire and ensure the safety of the operator. Technical personnel in this field can also set a firewall between the utility model and the main transformer according to actual needs.
[0021] The working principle of the utility model is:
[0022] When a fire occurs in the main transformer, the on-site operator manually presses the conversion switch, the red indicator light comes on, and the operating column is reliably connected to the power supply. Then, the button SB1 is pressed, the coil of relay KA1 is energized, the normally open contact of relay KA1 is closed, the oil drain valve of the transformer oil draining and nitrogen injection device is opened, and the transformer starts to drain oil. The green indicator light on the operating column comes on. After 10 seconds, the button SB2 is pressed, the coil of relay KA2 is energized, the normally open contact of relay KA2 is closed, the nitrogen injection valve of the transformer oil draining and nitrogen injection device is opened, and nitrogen enters the bottom of the transformer oil tank through the opening valve, the pressure reducing valve, the one-way valve and the nitrogen injection pipe, forcing the transformer oil in the tank to circulate. The lower temperature oil at the bottom of the tank is mixed with the high temperature oil on the surface, which can eliminate the hot oil layer, thereby reducing the surface oil temperature to below the ignition point. The flame inside the tank is automatically extinguished within 2 minutes, and the nitrogen injection time lasts for more than 20 minutes to avoid re-ignition.
[0023] Regarding the specific structure of the utility model, it should be explained that the connection relationship between the various component modules adopted in the utility model is definite and feasible. Except for special instructions in the embodiments, the specific connection relationship can bring corresponding technical effects and solve the technical problems raised by the utility model without relying on the execution of corresponding software programs. The components, modules, models of specific components and the connection methods between each other appearing in the utility model, as well as the conventional use methods and expected technical effects brought about by the above-mentioned technical features, except for specific instructions, all belong to the disclosed contents in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by technical personnel in this field before the application date, or belong to the existing technologies such as conventional technologies and common knowledge in this field, and there is no need to elaborate, so that the technical solution provided in this case is clear, complete and feasible, and the corresponding physical products can be reproduced or obtained according to the technical means.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A remote operating device for a transformer oil draining and nitrogen injection device, characterized in that: It includes an operating column, on which a conversion switch is arranged, one end of the conversion switch is electrically connected to the live wire, and the other end of the conversion switch is connected to one end of a red indicator light, one end of a button SB1, one end of a second normally open contact of a relay KA1, and one end of a button SB2; The other end of the red indicator light is electrically connected to the neutral line, the other end of the button SB1 is electrically connected to the neutral line through the coil of the relay KA1, the two ends of the button SB1 are connected in parallel to the first normally open contact of the relay KA1, and the other end of the second normally open contact of the relay KA1 is electrically connected to the neutral line through the green indicator light; The other end of the button SB2 is electrically connected to the neutral line through the coil of the relay KA2, and both ends of the button SB2 are connected in parallel to a normally open contact of the relay KA2; A normally open contact of the relay KA1 is electrically connected to an oil drain valve of a transformer oil drain and nitrogen injection device; A normally open contact of the relay KA2 is electrically connected to a nitrogen injection valve of the transformer oil draining and nitrogen injection device.
2. A remote operating device for a transformer oil draining and nitrogen injection device according to claim 1, characterized in that: The model of the operating column is BZC series.
3. A remote operating device for a transformer oil draining and nitrogen injection device according to claim 1, characterized in that: The model of the transformer oil draining and nitrogen injection device is BPZM-BDM-I.
4. A remote operating device for a transformer oil draining and nitrogen injection device according to claim 1, characterized in that: The relay KA1 and the relay KA2 are of the 3RH6140 series.
5. A remote operating device for a transformer oil draining and nitrogen injection device according to claim 1, characterized in that: The nitrogen injection valve of the transformer oil draining nitrogen injection device is connected to an opening valve, the opening valve is connected to a pressure relief valve, the pressure relief valve is connected to a one-way valve, and the one-way valve is connected to a nitrogen injection pipe.