Metal corrugated vertical switch oil conservator reliable in transportation

Abstract

The utility model discloses a metal corrugated vertical switch oil conservator reliable in transportation, which belongs to the technical field of oil conservators and comprises a conservator body and a corrugated core body. The corrugated core body is placed in the cabinet body, the upper portion of the corrugated core body is welded to the cabinet body upper cover, and a breathing cavity is formed in the corrugated core body and the cabinet body upper cover and communicated with the atmosphere through a breathing tube. An oil storage cavity is formed between the outside of the corrugated core body and the inside of the cabinet body and communicated with a switch body oil tank through a main connecting pipe, an oil injection and drainage pipe, an exhaust pipe and an oil level gauge are further arranged on the cabinet body, a wiring end of the oil level gauge is connected with a control box, and an alarm is arranged in the control box. The set pumping pressure of the oil storage cavity is Pa, the set pressurizing pressure of the breathing cavity is Pb, the 0 oil level of the oil level gauge is connected with the alarm in the control box, and the pressure gauge is installed on the breathing tube and also connected with the alarm in the control box. The device can reliably fix the corrugated core body in the transportation process, when the core body is not reliably fixed, an alarm prompt is given, and the corrugated core body is prevented from bumping and being damaged in the transportation process.

Description

Technical Field

[0001] The utility model relates to the technical field of oil storage cabinets, in particular to a metal corrugated vertical switch oil storage cabinet which can be transported reliably. Background Art

[0002] With the popularization of power systems, electricity has become an indispensable part of people's daily lives. In the use of power systems, on-load tap-changing transformers are used more and more frequently. The role of the tap-changing switch is extremely critical. The oil conservator on the tap-changing switch stores transformer oil, which compensates the oil tank of the tap-changing switch to ensure the smooth operation of the tap-changing switch.

[0003] Most on-load tap changer oil conservators are currently open-type, while sealed transformer oil conservators primarily include capsule-sealed and metal bellows-sealed types. Transportable metal bellows vertical switch conservators feature a vertically positioned corrugated core, which compensates for transformer oil volume changes and isolates air, effectively reducing transformer oil degradation and improving the overall insulation level of the switch. However, the corrugated core of these vertical metal bellows switch conservators is a fatigue-compression element with a limited fatigue life. This requires a reliable method of securing the core to prevent damage during long-distance transport, especially during long-distance transport. Because the oil storage and breathing chambers of these vertical metal bellows switch conservators are relatively small, if the seal is compromised, unilateral pressure securing of the oil storage or breathing chambers, or if an open conservator is used for transportation, the corrugated core cannot be fully secured. This can easily lead to damage during long-distance transport, impacting product performance. Utility Model Content

[0004] To address the shortcomings of the prior art, the present invention aims to provide a reliably transportable metal corrugated vertical switch oil conservator. This reliably transportable metal corrugated vertical switch oil conservator securely secures the corrugated core during transport, effectively preventing damage to the corrugated core from bumps during transport. The operation method is simple and effective, ensuring reliable transport. Furthermore, a control box monitors the conservator's transport status, generating an alarm signal if the corrugated core becomes unsecured.

[0005] The utility model provides a metal corrugated vertical switch oil storage cabinet with reliable transportation, comprising: a cabinet body for accommodating transformer oil, a corrugated core body for compensating for volume changes of transformer oil and isolating and sealing, the cabinet body comprising: a cabinet cover, cabinet side walls and a cabinet bottom plate, the corrugated core body comprising: a bellows and a movable end plate; the bottom of the bellows body is connected to the movable end plate, the top of the bellows body is connected to the cabinet cover, the interior of the corrugated core body and the interior of the cabinet cover form a breathing cavity, and the exterior of the corrugated core body and the cabinet cover, the cabinet side walls and the cabinet bottom plate form an oil storage cavity, and the corrugated core body is vertically retractable in the oil storage cavity;

[0006] An oil level gauge is arranged outside the cabinet, the oil level gauge is connected to the control box, and an alarm is arranged inside the control box.

[0007] Preferably, an oil filling and discharge pipe is provided on the bottom plate of the cabinet, and the oil filling and discharge pipe is communicated with the oil storage cavity.

[0008] Preferably, a vacuum gauge is installed on the oil filling and discharge pipe.

[0009] Preferably, a breathing tube is provided on the upper cover of the cabinet, and the breathing tube leads to the breathing cavity.

[0010] Preferably, an exhaust pipe is provided on the side wall of the cabinet, the exhaust pipe is communicated with the oil storage chamber, and an exhaust port valve is installed on the exhaust pipe.

[0011] Preferably, a main connecting pipe is provided on the bottom plate of the cabinet, and the main connecting pipe is communicated with the oil storage cavity.

[0012] Preferably, a sealing cover plate for sealing the main connecting pipe outlet is installed below the main connecting pipe.

[0013] Preferably, a breathing port valve is installed on the breathing tube, and a pressure gauge is installed on the breathing port valve.

[0014] Preferably, the pressure gauge is connected to an alarm inside the control box.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The utility model provides a metal corrugated vertical switch oil storage cabinet that can be transported reliably. A breathing port valve is arranged on the breathing tube of the device, and a pressure gauge is arranged on the breathing port valve. The pressure gauge is connected to an alarm in a control box. When the oil storage cabinet is transported, the corrugated core and the cabinet bottom plate are reliably fixed and sealed by setting the Pa of the oil storage chamber and the Pb of the breathing chamber. The pressure range set by Pa and Pb avoids damage to the cabinet and the corrugated core due to excessively high or low pressure. At the same time, the setting of Pa and Pb can ensure that the corrugated core can still be tightly attached to the cabinet bottom plate when there is an air leak in the oil storage chamber and the breathing chamber. The utility model is safe and reliable, simple and easy to operate, and can effectively prevent the corrugated core from being damaged by bumps during transportation. At the same time, the transportation status of the oil storage cabinet can be monitored in real time through the pressure gauge and the control box. Once the core is released from the fixed state and the pressure is abnormal, the control box will send an alarm signal to promptly alert the staff of the abnormality of the oil storage cabinet.

[0017] At the same time, transformer oil is set in the oil storage chamber of this device, and the Pb pressure value is set in the breathing chamber, which can also ensure that the corrugated core is reliably fixed during transportation, making the way of fixing the corrugated core more diverse. The pressure gauge is connected to the control box. Once the pressure is released to a certain value, the alarm in the control box will send an alarm signal to achieve reliable oil transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The first schematic diagram of a metal corrugated vertical switch oil conservator suitable for transportation.

[0019] Figure 2 The second schematic diagram is a metal corrugated vertical switch oil conservator suitable for transportation.

[0020] Among them: 1-cabinet cover, 2-cabinet side wall, 3-cabinet bottom plate, 4-bellows, 5-movable end plate, 6-breathing chamber, 7-breathing pipe, 8-breathing port valve, 9-oil storage chamber, 10-exhaust pipe, 11-exhaust port valve, 12-main connecting pipe, 13-oil filling and discharge pipe, 14-sealing cover, 15-vacuum gauge, 16-oil level gauge, 17-control box, 18-pressure gauge, 19-oil filling and discharge port valve, 20-main connecting port valve. DETAILED DESCRIPTION

[0021] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative efforts are all within the scope of protection of the present invention.

[0022] Example 1:

[0023] The utility model is a metal corrugated vertical switch oil storage cabinet that can be transported reliably. Figure 1 As shown, the utility model comprises: a cabinet for containing transformer oil, a corrugated core placed in the cabinet for transformer oil compensation and sealing;

[0024] like Figure 1 As shown, the cabinet includes: a cabinet cover 1, a cabinet side wall 2 and a cabinet bottom plate 3, and a corrugated core is placed in the cabinet, and the corrugated core includes: a bellows 4 and a movable end plate 5, the lower end of the bellows 4 is fixed to the upper outer surface of the movable end plate 5, and the upper end of the bellows 4 is fixed to the cabinet cover 1, and a breathing chamber 6 is formed inside the corrugated core and inside the cabinet cover 1, and a breathing tube 7 is provided on the upper outer surface of the cabinet cover 1. The breathing chamber 6 is communicated with the atmosphere through the breathing tube 7 provided on the cabinet cover 1, and a breathing port valve 8 is provided on the breathing port valve 8, and a pressure gauge 18 is provided on the breathing port valve 8; the cabinet cover 1 is fixedly connected to the cabinet side wall 2, and the cabinet side wall 2 is fixedly connected to the cabinet bottom plate 3, and a sealed oil storage chamber 9 is formed outside the corrugated core and inside the cabinet; the cabinet side wall 2 and the bellows 4 adopt a circular structure, that is, the horizontal cross-section of the bellows and the cabinet side wall is a circular structure, and the corrugated core is vertically telescopic in the oil storage chamber;

[0025] The oil storage chamber 9 sets the extraction pressure to Pa, and the Pa pressure value is -0.04~-0.07MPa. The breathing chamber 6 sets the charging pressure to Pb, and the Pb pressure value is 0.04~0.07MPa. The corrugated core is fixed by the Pa of the oil storage chamber 9 and the Pb of the breathing chamber 6, so that the movable end plate 5 is close to the cabinet bottom plate 3. The upper and lower pressure limits of Pa and Pb are to avoid damage to the cabinet and the corrugated core caused by excessively high or low pressure. At the same time, the oil storage chamber 9 is within the pressure range of Pa and the breathing chamber 6 is within the pressure range of Pb, which can ensure that the corrugated core is firmly fixed. The setting of Pa and Pb can ensure that when there is a leak in the oil storage chamber and the breathing chamber, the corrugated core can still be close to the cabinet bottom plate, and will not shake during transportation, thereby protecting the corrugated core.

[0026] An exhaust pipe 10 is provided on the cabinet side wall 2 at the top of the oil storage chamber 9, and an exhaust port valve 11 is installed on the exhaust pipe 10. A main connecting pipe 12 and an oil filling and discharge pipe 13 are provided on the cabinet bottom plate 3 of the oil storage chamber 9. A sealing cover plate 14 is installed at the bottom of the main connecting pipe 12 to seal the oil storage chamber 9. A vacuum gauge 15 is installed on the oil filling and discharge pipe 13. A magnetic flap oil level gauge 16 is provided on the outside of the cabinet side wall 2, which is completely isolated from the oil storage chamber 9 and used to display the oil level of the oil storage cabinet. The oil level gauge 16 is connected to a control box 17, which has an alarm installed inside. The connection terminal of the oil level gauge 16 is connected to the alarm in the control box 17. The alarm in the control box 17 is also connected to the pressure gauge 18 on the breathing tube 7. When the pressure is abnormal, the pressure gauge 18 will send a signal to the alarm in the control box 17, which will then sound an alarm to alert nearby personnel.

[0027] In a specific embodiment, before transportation, open the exhaust port valve 11 on the exhaust pipe 10 and the breathing port valve 8 on the breathing tube 7, connect the exhaust port valve 11 on the exhaust pipe 10 to the vacuum system, and then pump negative pressure into the oil storage chamber 9. During the pumping process, the corrugated core extends toward the 0 oil level position of the oil level gauge until it is completely in contact with the cabinet bottom plate 3, the oil level gauge 16 displays 0 oil level, and the magnetic flip column turns white. Continue to pump negative pressure until the vacuum gauge 15 on the oil filling and discharge pipe 13 displays a pressure value of -0.04 to -0.07 MPa of Pa, close the exhaust port valve 11, and stop pumping negative pressure. Then connect the breathing port valve 8 to the inflation device, and charge the breathing chamber 6 with positive pressure until the pressure value of the breathing chamber 6 reaches 0.04~0.07MPa of Pb, stop charging with positive pressure, close the breathing port valve 8, and set Pa and Pb between the breathing chamber 6 and the oil storage chamber 9 so that the corrugated core and the cabinet bottom plate 3 fit firmly. Install a pressure gauge 18 on the breathing port valve 8, and then open the breathing port valve 8. The pressure gauge 18 displays the pressure of the breathing chamber 6. The pressure gauge 18 is connected to the alarm in the control box 17. The internal alarm switch of the control box 17 is set to the oil level gauge to display a non-0 oil level alarm. Therefore, before transportation, the metal corrugated vertical switch oil storage cabinet meets the transportation state of a reliably fixed corrugated core. During transportation, once the corrugated core cannot be reliably fixed and the pressure gauge 18 displays abnormal pressure, the alarm in the control box 17 will send an alarm signal.

[0028] like Figure 2 As shown, in other specific embodiments based on the first embodiment, the vacuum gauge 15 on the oil filling and draining pipe 13 can be replaced with an oil filling and draining port valve 19, and the sealing cover plate 14 on the main connecting pipe 12 can be replaced with a main connecting port valve 20. Before transportation, the exhaust port valve 11 is opened, the breathing port valve 8 and the main connecting port valve 20 are closed, the oil filling and draining port valve 19 is opened and connected to the oil filling and draining device, and transformer oil is injected into the oil storage chamber 9 through the oil filling and draining port valve 19. During the oil filling process, the air in the oil storage chamber 9 is discharged from the exhaust port valve 11 until the transformer oil flows out of the exhaust port valve 11 steadily. The exhaust port valve 11 is immediately closed, and oil filling is continued until the oil level is 1 oil level higher than the oil level corresponding to the oil temperature curve. The oil filling is stopped, the oil filling and draining port valve 19 is closed, the breathing port valve 8 is opened, and pressure is added to the breathing chamber 6 through the breathing port valve 8 until the pressure in the breathing chamber 6 reaches 0.04-0.07 MPa of Pb. The positive pressure is stopped, the breathing port valve 8 is closed, the pressure gauge 18 is installed, and the breathing port valve 8 is opened again. The electrical contacts of pressure gauge 18 are connected to the alarm in control box 17. Before transportation, the metal corrugated vertical switch oil conservator meets the transportation requirements of ensuring the corrugated core is securely fixed. During transportation, if the corrugated core is no longer securely fixed and the pressure drops below 0.01 MPa, the alarm in control box 17 will sound an alarm signal.

[0029] The beneficial effect of the present invention is that, compared with the prior art,

[0030] The utility model provides a metal corrugated vertical switch oil storage cabinet with reliable transportation. A breathing port valve is arranged on the breathing tube of the device, and a pressure gauge is arranged on the breathing port valve. The pressure gauge is connected to an alarm in a control box. When the oil storage cabinet is transported, the corrugated core and the cabinet bottom plate are reliably fixed and sealed by setting the Pa of the oil storage chamber and the Pb of the breathing chamber. The pressure range set by Pa and Pb avoids damage to the cabinet and the corrugated core due to excessively high or low pressure. At the same time, the setting of Pa and Pb can ensure that the corrugated core can still be tightly attached to the cabinet bottom plate when there is an air leak in the oil storage chamber and the breathing chamber. The utility model is safe and reliable, simple and easy to operate, and can effectively prevent the corrugated core from being damaged by bumps during transportation. At the same time, the transportation status of the oil storage cabinet can be monitored in real time through the pressure gauge and the control box. Once the core is released from the fixed state and the pressure is abnormal, the control box will send an alarm signal to promptly alert the staff of the abnormality of the oil storage cabinet.

[0031] At the same time, the oil storage chamber of this device is filled with transformer oil, and the breathing chamber is set with Pb pressure value, which can also ensure that the corrugated core is reliably fixed during transportation, making the way of fixing the corrugated core more different. The pressure gauge is connected to the control box. Once the pressure is released to a certain value, the alarm in the control box will send an alarm signal, realizing oil transportation.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A reliably transportable metal corrugated vertical switch oil conservator, comprising: The cabinet for containing transformer oil and the corrugated core for compensating for transformer oil volume changes and isolating and sealing are characterized by: The cabinet comprises: a cabinet upper cover (1), cabinet side walls (2) and a cabinet bottom plate (3); the corrugated core comprises: a bellows (4) and a movable end plate (5); the bottom of the bellows (4) is connected to the movable end plate (5), the top of the bellows (4) is connected to the cabinet upper cover (1), the interior of the bellows core and the interior of the cabinet upper cover (1) form a breathing chamber (6), the exterior of the bellows core and the cabinet upper cover (1), the cabinet side walls (2) and the cabinet bottom plate (3) form an oil storage chamber (9), and the bellows core is vertically retractable in the oil storage chamber (9); An oil level gauge (16) is arranged outside the cabinet, the oil level gauge (16) is connected to a control box (17), and an alarm is arranged inside the control box (17).

2. The reliably transportable metal corrugated vertical switch oil conservator according to claim 1, characterized in that: An oil injection and discharge pipe (13) is provided on the cabinet bottom plate (3), and the oil injection and discharge pipe (13) is communicated with the oil storage cavity (9).

3. The reliably transportable metal corrugated vertical switch oil conservator according to claim 2, characterized in that: A vacuum gauge (15) is installed on the oil filling and discharge pipe (13).

4. The reliably transportable metal corrugated vertical switch oil conservator according to claim 1, characterized in that: A breathing tube (7) is provided on the cabinet upper cover (1), and the breathing tube (7) leads to the inside of the breathing cavity (6).

5. The reliably transportable metal corrugated vertical switch oil conservator according to claim 1, characterized in that: An exhaust pipe (10) is provided on the cabinet side wall (2), the exhaust pipe (10) is communicated with the oil storage chamber (9), and an exhaust port valve (11) is installed on the exhaust pipe (10).

6. The reliably transportable metal corrugated vertical switch oil conservator according to claim 1, characterized in that: A main connecting pipe (12) is provided on the cabinet bottom plate (3), and the main connecting pipe (12) is communicated with the oil storage chamber (9).

7. The reliably transportable metal corrugated vertical switch oil conservator according to claim 6, characterized in that: A sealing cover plate (14) for sealing the outlet of the main connecting pipe (12) is installed below the main connecting pipe (12).

8. The reliably transportable metal corrugated vertical switch oil conservator according to claim 4, characterized in that: A breathing port valve (8) is installed on the breathing tube (7), and a pressure gauge (18) is installed on the breathing port valve (8).

9. The reliably transportable metal corrugated vertical switch oil conservator according to claim 8, characterized in that: The pressure gauge (18) is connected to the alarm inside the control box (17).

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