SF6 density controller with external junction box
By setting the wiring box at the lower end of the SF6 density controller and connecting through the curve, the problem of inconvenience and leakage of the wiring is solved, and the design that facilitates the reliability of the equipment.
Patent Information
- Application Number
- CN202420837324.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The junction box of the existing SF6 density controller is arranged closely to the meter head, which leads to inconvenient wiring and is prone to leakage and affecting the meter head. Especially after running outdoors for a long time, the plastic shell of the junction box is prone to aging and inconvenient to replace.
Design a SF6 density controller of an external wiring box. By setting the wiring box interval at the lower end of the head, and connecting it through the curve, the wiring box is separated from the header and has operational space to facilitate the wiring and maintenance. At the same time, it will increase the increase. Waterproof sealing structure to prevent leakage.
The separation settings of the wiring box and the header are facilitated to the wiring and replacement and maintenance. At the same time, it effectively prevents the phenomenon of water leakage leakage and improves the reliability and service life of the equipment.
Smart Images
Figure CN222424240U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a SF6 density controller, in particular to a SF6 density controller with an external junction box. Background Art
[0002] The junction box of the existing SF6 density controller is adjacent to the meter head and fits together to form an integral whole. In this way, there is no extra space between the junction box and the meter head, which makes wiring inconvenient. At the same time, the junction box and the meter head are integrated, and water easily leaks into the meter head and affects the meter head. Especially after long-term outdoor operation, the plastic shell of the junction box is prone to aging and is inconvenient to replace. Utility Model Content
[0003] In order to solve the above technical problems, the purpose of the utility model is to provide an SF6 density controller with an external junction box, which separates the junction box and the meter head up and down to facilitate wiring maintenance.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] An SF6 density controller with an external junction box comprises a meter head and a junction box, wherein the meter head is used to monitor the density of indoor SF6 gas of the monitored switch gas, the meter head has electrical contacts for transmitting contact signals inside, the junction box is arranged at intervals at the lower end of the meter head, the junction box and the meter head are connected as a whole up and down through a bent plate, the bent plate is arranged on the periphery of the same side of the junction box and the meter head, the junction box is provided with wiring terminals, and the wiring terminals are connected to the electrical contacts through contact leads.
[0006] Furthermore, the bent plate has a first vertical plate, a second vertical plate and a transverse plate, the first vertical plate and the second vertical plate are relatively arranged at both ends of the transverse plate, the first vertical plate and the second vertical plate are both perpendicular to the transverse plate, the first vertical plate is arranged on the outer surface of the meter head, and the second vertical plate is arranged on the outer surface of the junction box.
[0007] Furthermore, a case gland is provided on the outer side of the meter head located at the lower side of the mounting joint, and an incoming line gland and an outgoing line gland are provided on the outer side of the junction box. One end of the contact lead passes through the case gland to be electrically connected to the electrical contact, and the other end passes through the incoming line gland to be connected to the wiring terminal. The wiring terminal is also connected with a lead-out wire, and the lead-out wire passes through the outgoing line gland for access to the control room.
[0008] Furthermore, the junction box includes a box body and a box cover, the connection terminals are arranged in the box body, and the second vertical plate is arranged on the outer side of the bottom of the box body.
[0009] Furthermore, a waterproof rubber ring is arranged at the inner upper end of the box body, the box cover is buckled on the box body, and anti-slip screws are arranged around the bottom of the box cover for fixing the waterproof rubber ring.
[0010] Furthermore, a mounting joint for connecting the meter head and the monitored switch is provided on the outer side of the meter head.
[0011] Furthermore, the meter case gland is arranged on the second vertical plate and connected to the meter head, the incoming line gland is arranged on the second vertical plate and connected to the box body, the outgoing line gland is arranged at the lower end of the bottom outer side of the box body, and the connecting terminal is arranged on the inner side of the bottom of the box body.
[0012] The utility model adopts the above technical solution, which has the following advantages:
[0013] The utility model provides an SF6 density controller with an external junction box. The junction box is spaced at the lower end of the meter head so that the junction box and the meter head are separated and have a certain operating space, which is convenient for wiring, replacement and maintenance of the junction box. At the same time, because the junction box is located at the lower end of the meter head, the meter head forms a separate whole and is not prone to water seepage or oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the main structure of the utility model.
[0015] Figure 2 It is a side structural schematic diagram of the utility model.
[0016] The figure numbers are as follows: 1-meter head, 2-mounting connector, 3-meter case gland, 4-contact lead, 5-first screw, 6-bent plate, 7-junction box, 071-box cover, 072-box body, 8-inlet gland, 9-second screw, 10-outlet gland, 11-connection terminal, 12-anti-slip screw, 13-waterproof rubber ring. DETAILED DESCRIPTION
[0017] The following will be combined with the accompanying drawings to describe the preferred embodiments of the present invention in detail, so as to more clearly understand the purpose, characteristics and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.
[0018] like Figure 1 , Figure 2The utility model is an SF6 density controller with an external junction box, comprising a meter head 1 and a junction box 7, the meter head 1 is used to monitor the density of SF6 gas in the gas chamber of the monitored switch, and display the real-time density through a pointer, the meter head 1 has an electric contact for transmitting a contact signal, the junction box 7 is arranged at intervals at the lower end of the meter head 1, the junction box 7 and the meter head 1 are connected as a whole up and down through a bent plate 6, the bent plate 6 is arranged on the same side periphery of the junction box 1 and the meter head 7, the junction box 7 is provided with a wiring terminal 11, and the wiring terminal 11 is connected to the electric contact through a contact lead 4.
[0019] Further, the bent plate 6 is a plate-like structure, and the bent plate 6 has a first vertical plate, a second vertical plate and a transverse plate, the first vertical plate and the second vertical plate are relatively arranged at both ends of the transverse plate, the first vertical plate and the second vertical plate are perpendicular to the transverse plate, the first vertical plate is arranged on the outer surface of the meter head 1, and the second vertical plate is arranged on the outer surface of the junction box 7. The first vertical plate is fixed to the outer surface of the lower end of the meter head 1 by the first screw 5, and the second vertical plate is fixed to the junction box 7 by the second screw 9.
[0020] Furthermore, a case gland 3 is provided on the outer side of the meter head 1 located at the lower side of the mounting joint 2, and an incoming line gland 8 and an outgoing line gland 10 are provided on the outer side of the junction box 7. One end of the contact lead 4 passes through the case gland 3 to be electrically connected to the electrical contact, and the other end passes through the incoming line gland 8 to be connected to the wiring terminal 11. The wiring terminal 11 is also connected with a lead wire, which passes through the outgoing line gland 10 for access to the control room, and the contact signal is output to the control room through the lead wire.
[0021] Furthermore, the junction box 7 includes a box body 072 and a box cover 071 , the box cover 071 is used to seal the box body 072 , the connection terminal 11 is arranged in the box body 072 , and the second vertical plate is arranged on the outside of the bottom of the box body 072 to connect the junction box 7 and the meter head 1 .
[0022] Furthermore, a waterproof rubber ring 13 is provided at the inner upper end of the box body 072, and the box cover 071 is buckled on the box body 072 to achieve waterproof sealing through the waterproof rubber ring 13. Anti-slip screws 12 are provided around the bottom of the box cover 071 to fix the waterproof rubber ring 13. After the waterproof rubber ring 13 is locked by the anti-slip screws 12, the waterproof rubber ring 13 will not fall out of the box body 072 to ensure sealing and waterproofing. The waterproof rubber ring 13 is preferably a silicone rubber ring.
[0023] Furthermore, a mounting joint 2 for connecting the meter header 1 and the monitored switch is provided on the outer side of the meter header 1 , and the mounting joint 2 is located at the upper end of the first vertical plate on the outer side of the meter header 1 .
[0024] Further, the meter case gland 3 is arranged on the second vertical plate and connected to the meter head 1, the incoming cable gland 8 is arranged on the second vertical plate and connected to the box body 072, the outgoing cable gland 10 is arranged at the lower end of the bottom outer side of the box body 072, and the terminal 11 is arranged at the bottom inner side of the box body 072. The meter case gland 3, the incoming cable gland 8 and the outgoing cable gland 10 are all locked by nuts.
Claims
1. An SF6 density controller with an external junction box, characterized in that: It includes a meter head and a junction box, the meter head is used to monitor the density of SF6 gas in the gas chamber of the monitored switch, the meter head has electric contacts for transmitting contact signals, the junction box is arranged at intervals at the lower end of the meter head, the junction box and the meter head are connected as a whole by a bent plate, the bent plate is arranged on the same side of the junction box and the meter head, the junction box is provided with wiring terminals, and the wiring terminals are connected to the electric contacts through contact leads.
2. The SF6 density controller with an external junction box according to claim 1, characterized in that: The bent plate comprises a first vertical plate, a second vertical plate and a transverse plate, wherein the first vertical plate and the second vertical plate are relatively arranged at two ends of the transverse plate, the first vertical plate and the second vertical plate are both perpendicular to the transverse plate, the first vertical plate is arranged on the outer surface of the meter head, and the second vertical plate is arranged on the outer surface of the junction box.
3. The SF6 density controller with an external junction box according to claim 2, characterized in that: A case gland is arranged on the outside of the meter head located at the lower side of the mounting joint, and an incoming line gland and an outgoing line gland are arranged on the outside of the junction box. One end of the contact lead passes through the case gland to be electrically connected to the electrical contact, and the other end passes through the incoming line gland to be connected to the wiring terminal. The wiring terminal is also connected with a lead-out wire, and the lead-out wire passes through the outgoing line gland for access to the control room.
4. The SF6 density controller with an external junction box according to claim 3 is characterized in that: The junction box comprises a box body and a box cover, the connection terminals are arranged in the box body, and the second vertical plate is arranged on the outer side of the bottom of the box body.
5. The SF6 density controller with an external junction box according to claim 4, characterized in that: A waterproof rubber ring is arranged at the inner upper end of the box body, the box cover is buckled on the box body, and anti-slip screws are arranged around the bottom of the box cover to fix the waterproof rubber ring.
6. The SF6 density controller with an external junction box according to claim 5, characterized in that: The outer side of the meter head is provided with an installation joint for connecting the meter head and the monitored switch.
7. The SF6 density controller with an external junction box according to claim 6, characterized in that: The meter case gland is arranged on the second vertical plate and connected to the meter head, the incoming line gland is arranged on the second vertical plate and connected to the box body, the outgoing line gland is arranged at the lower end of the bottom outer side of the box body, and the connecting terminal is arranged on the inner side of the bottom of the box body.