35kV split-type high-voltage switch cabinet

Abstract

The utility model relates to the technical field of switch cabinets, in particular to a 35kV split type high-voltage switch cabinet. Whether the outgoing cable in the cabinet body is electrified or not is detected through the voltage transformer, so that whether the main loop of the switch cabinet is opened or not is judged. Under the normal condition, the cabinet door is closed, the main loop of the switch cabinet is switched on, and the lock rod extends into the lock groove to realize the locking of the cabinet door; at the moment, the controller judges whether the main loop is switched off based on whether the outgoing cable in the cabinet body is electrified, when the main loop is switched on, the electromagnet attracts the blocking rod, and the blocking rod can block the other end of the locking rod at the moment, so that the locking rod cannot extend out of the locking groove, namely, the cabinet door cannot be opened when the main loop is switched on; when the main loop is opened, the electromagnet does not attract the stop lever any more, the stop lever does not block the other end of the lock rod at the moment, the lock rod can stretch out of the lock groove, namely, when the main loop is opened, an operator can move the lock rod, so that the lock rod is separated from the lock groove, the cabinet door can be normally opened, and safety is achieved.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, and in particular to a 35kV split-type high-voltage switchgear. Background Technology

[0002] A switchgear is an electrical device. External power lines first enter the main control switch inside the cabinet, then the branch control switches. Each branch circuit is configured according to its needs, including instruments, automatic control systems, motor magnetic switches, various AC contactors, etc. Some switchgear also have high-voltage and low-voltage compartments. The main function of switchgear is to open, close, control, and protect electrical equipment during power generation, transmission, distribution, and energy conversion in a power system. The main components inside a switchgear include circuit breakers, disconnect switches, load switches, operating mechanisms, instrument transformers, and various protective devices. Currently, the doors of existing high-voltage switchgear lack interlocking structures, and their safety performance needs improvement. Utility Model Content

[0003] The main purpose of this utility model is to provide a 35kV split-type high-voltage switchgear, which aims to solve the problem that the cabinet doors of existing high-voltage switchgear do not have an interlocking structure, and the safety performance needs to be improved.

[0004] To achieve the above objectives, the technical solution proposed by this utility model is as follows:

[0005] A 35kV split-type high-voltage switchgear includes a cabinet, a cabinet door, a controller, a voltage transformer, an electromagnet, a locking rod, a stop bar, and a locking block. The cabinet door is hinged to the cabinet body. The voltage transformer is disposed inside the cabinet body to detect whether the outgoing cables inside the cabinet are energized. The voltage transformer and the electromagnet are both electrically connected to the controller. The locking rod is slidably connected to the inner wall of the cabinet door. The locking block is connected to the inner wall of the cabinet body. The locking block has a locking groove. One end of the locking rod can slide into the locking groove. When one end of the locking rod slides into the locking groove, the cabinet door is locked. The stop bar is movably connected to the inner wall of the cabinet door. The electromagnet is used to attract the stop bar. When the electromagnet attracts the stop bar, the stop bar can block the other end of the locking rod, so that the locking rod cannot extend out of the locking groove. The controller is used to control the start and stop of the electromagnet based on whether the outgoing cables inside the cabinet are energized.

[0006] Preferably, it further includes a support block and an operating rod; the support block is connected to the inner wall of the cabinet door; the cabinet body includes a vertically arranged first cabinet panel; the lock block is disposed on the inner wall of the first cabinet panel; the lock rod slides through the support block; the lock rod is parallel to the cabinet door; when the cabinet door is closed, the cabinet door is perpendicular to the first cabinet panel, and the lock groove is directly opposite the lock rod; the cabinet door has a horizontally extending waist hole; the operating rod is vertically connected to the lock rod, and the operating rod movably passes through the waist hole; the end of the operating rod away from the lock rod extends out of the cabinet door.

[0007] Preferably, it also includes a limiting block; the limiting block is disposed on the inner wall of the first cabinet panel; when the cabinet door is closed, the operating lever is located between the support block and the locking block, and the cabinet door abuts against the limiting block.

[0008] Preferably, it further includes a first spring; the locking rod passes through the operating rod; the first spring is sleeved on the locking rod; one end of the first spring is connected to the support block, and the other end of the first spring is connected to the operating rod; the first spring is always in a compressed state; the elastic force of the first spring causes one end of the locking rod to be embedded in the locking groove.

[0009] Preferably, it further includes a first connecting arm and a second connecting arm; the first connecting arm is connected to the side of the support block away from the cabinet door; the first connecting arm is perpendicular to the cabinet door; the second connecting arm is connected to the end of the first connecting arm away from the support block; the second connecting arm is parallel to the cabinet door; the electromagnet is disposed on the second connecting arm.

[0010] Preferably, it further includes a positioning rod; the positioning rod is vertically connected to the inner wall of the cabinet door; the positioning rod is located on the side of the support block opposite to the operating rod; the stop rod is slidably sleeved on the positioning rod, and the stop rod and the positioning rod share a common central axis; the end of the stop rod away from the cabinet door is directly opposite the electromagnet; the stop rod has a through hole; the central axis of the through hole is parallel to the cabinet door; when the electromagnet does not attract the stop rod, the locking rod is directly opposite the through hole; the inner diameter of the through hole is larger than the diameter of the locking rod.

[0011] Preferably, it also includes a second spring; a connecting plate is vertically connected to the side of the stop bar away from the positioning rod; one end of the second spring is connected to the side of the second connecting arm facing the cabinet door, and the other end of the second spring is connected to the connecting plate; the second spring is always in a compressed state, and the elastic force of the second spring makes the stop bar tend to abut against the inner wall of the cabinet door.

[0012] Preferably, when the stop bar abuts against the inner wall of the cabinet door, the through hole is directly opposite the locking bar, and at this time the through hole and the locking bar share the same central axis.

[0013] Preferably, it also includes a protective cover; the protective cover is disposed on the inner wall of the cabinet door; the support block, the first connecting arm, the second connecting arm, the electromagnet, the second spring, the positioning rod, the stop bar and the first spring are all located inside the protective cover; the locking rod can extend out of the protective cover.

[0014] Preferably, an anti-slip sleeve is fitted onto one end of the operating lever that extends out of the cabinet.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] This utility model proposes a 35kV split-type high-voltage switchgear with an interlocking structure for the cabinet door, thereby improving safety. In practical use, a voltage transformer is used to detect whether the outgoing cables inside the cabinet are energized, thus determining whether the main circuit of the switchgear is open. Specifically: when the outgoing cables are energized, it indicates that the main circuit is closed; when the outgoing cables are de-energized, it indicates that the main circuit is open. Under normal circumstances, the cabinet door is closed. At this time, the main circuit of the switchgear is closed, and the locking rod extends into the locking groove to lock the cabinet door. At this time, the controller base... The presence or absence of energized outgoing cables within the cabinet is used to determine whether the main circuit is open. When the main circuit is closed, the electromagnet attracts the stop bar, which blocks the other end of the locking bar, preventing it from extending out of the locking slot. This means the cabinet door cannot be opened when the main circuit is closed. When the main circuit is open, the electromagnet no longer attracts the stop bar, and the stop bar no longer blocks the other end of the locking bar. The locking bar can then extend out of the locking slot, allowing the operator to move the locking bar and disengage it from the locking slot, thus enabling the cabinet door to be opened normally, ensuring greater safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a top view of an embodiment of the 35kV split-type high-voltage switchgear proposed in this utility model.

[0019] Figure 2 for Figure 1 Enlarged detail diagram at point A in the middle;

[0020] Figure 3 for Figure 1 A magnified view showing the details of point A in another state.

[0021] Explanation of reference numerals in the attached figures:

[0022] 110. Cabinet body; 120. Cabinet door; 130. First cabinet panel; 140. Support block; 150. Lock block; 160. Lock groove; 170. Lock rod; 180. Operating rod; 190. Anti-slip sleeve; 210. First spring; 220. Waist hole; 230. First connecting arm; 240. Second connecting arm; 250. Electromagnet; 260. Second spring; 270. Connecting plate; 280. Stop bar; 290. Through hole; 310. Positioning rod; 320. Limit block.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] This utility model proposes a 35kV split-type high-voltage switchgear.

[0030] As attached Figure 1 - Appendix Figure 3 As shown, in one embodiment of a 35kV split-type high-voltage switchgear proposed in this utility model, the 35kV split-type high-voltage switchgear includes a cabinet 110, a cabinet door 120, a controller (microcontroller), a voltage transformer (not shown), an electromagnet 250, a locking rod 170, a stop bar 280, and a locking block 150; the cabinet door 120 is hinged to the cabinet 110; the voltage transformer is disposed inside the cabinet 110 to detect whether the outgoing cables (not shown) inside the cabinet 110 are energized; the voltage transformer and the electromagnet 250 are both electrically connected to the controller; the locking rod 170 is slidably connected to the inner wall of the cabinet door 120; Lock block 150 is connected to the inner wall of cabinet 110; lock block 150 has a lock groove 160; one end of lock rod 170 can slide into lock groove 160; when one end of lock rod 170 slides into lock groove 160, cabinet door 120 is locked; stop rod 280 is movably connected to the inner wall of cabinet door 120; electromagnet 250 is used to attract stop rod 280; when electromagnet 250 attracts stop rod 280, stop rod 280 can block the other end of lock rod 170 so that lock rod 170 cannot extend out of lock groove 160; controller is used to control the start and stop of electromagnet 250 based on whether the outgoing cable in cabinet 110 is energized.

[0031] This utility model proposes a 35kV split-type high-voltage switchgear with an interlocking structure for the cabinet door 120, thereby improving safety. In practical use, a voltage transformer is used to detect whether the outgoing cables inside the cabinet 110 are energized, thus determining whether the main circuit of the switchgear is open. Specifically: when the outgoing cables are energized, it indicates that the main circuit is closed; when the outgoing cables are not energized, it indicates that the main circuit is open. Under normal circumstances, the cabinet door 120 is closed, and the main circuit of the switchgear is closed. The locking rod 170 extends into the locking groove 160 to lock the cabinet door 120. At this time, the controller determines whether the main circuit is open based on whether the outgoing cables inside the cabinet 110 are energized. When the main circuit is closed, the electromagnet 250 attracts the stop rod 280, which blocks the other end of the locking rod 170, preventing the locking rod 170 from extending out of the locking groove 160 (as shown in the attached diagram). Figure 3 As shown in the attached diagram), when the main circuit is closed, the cabinet door 120 cannot be opened; when the main circuit is open, the electromagnet 250 no longer attracts the stop lever 280, and at this time the stop lever 280 no longer blocks the other end of the locking lever 170, and the locking lever 170 can extend out of the locking groove 160 (as shown in the attached diagram). Figure 2 As shown in the figure, the operator can only move the locking rod 170 when the main circuit is tripped, so that the locking rod 170 can be disengaged from the locking groove 160, and the cabinet door 120 can be opened normally, which is safer.

[0032] In addition, this 35kV split-type high-voltage switchgear also includes a support block 140 and an operating rod 180; the support block 140 is connected to the inner wall of the cabinet door 120; the cabinet body 110 includes a vertically arranged first cabinet plate 130; a locking block 150 is disposed on the inner wall of the first cabinet plate 130; a locking rod 170 is slidably inserted through the support block 140; the locking rod 170 is parallel to the cabinet door 120; when the cabinet door 120 is closed, the cabinet door 120 is perpendicular to the first cabinet plate 130, and the locking groove 160 is directly opposite the locking rod 170; the cabinet door 120 has a horizontally extending waist hole 220; the operating rod 180 is vertically connected to the locking rod 170, and the operating rod 180 is movably inserted through the waist hole 220; the end of the operating rod 180 away from the locking rod 170 extends out of the cabinet door 120.

[0033] Meanwhile, this 35kV split-type high-voltage switchgear also includes a limit block 320; the limit block 320 is disposed on the inner wall of the first cabinet plate 130; when the cabinet door 120 is closed, the operating rod 180 is between the support block 140 and the locking block 150, and the cabinet door 120 abuts against the limit block 320.

[0034] Specifically, this 35kV split-type high-voltage switchgear also includes a first spring 210; a locking rod 170 passes through the operating rod 180; the first spring 210 is sleeved on the locking rod 170; one end of the first spring 210 is connected to the support block 140, and the other end of the first spring 210 is connected to the operating rod 180; the first spring 210 is always in a compressed state; the elastic force of the first spring 210 causes one end of the locking rod 170 to be embedded in the locking groove 160. Through the above technical solution, the specific structure of this 35kV split-type high-voltage switchgear is further improved, and the locking rod 170 can be easily moved by setting the operating rod 180.

[0035] In addition, this 35kV split-type high-voltage switchgear also includes a first connecting arm 230 and a second connecting arm 240; the first connecting arm 230 is connected to the side of the support block 140 away from the cabinet door 120; the first connecting arm 230 is perpendicular to the cabinet door 120; the second connecting arm 240 is connected to the end of the first connecting arm 230 away from the support block 140; the second connecting arm 240 is parallel to the cabinet door 120; and an electromagnet 250 is disposed on the second connecting arm 240. Meanwhile, this 35kV split-type high-voltage switchgear also includes a positioning rod 310; the positioning rod 310 is vertically connected to the inner wall of the cabinet door 120; the positioning rod 310 is located on the side of the support block 140 away from the operating rod 180; the stop rod 280 is slidably sleeved on the positioning rod 310, and the stop rod 280 and the positioning rod 310 share the same central axis; the end of the stop rod 280 away from the cabinet door 120 is directly opposite to the electromagnet 250; the stop rod 280 has a through hole 290; the central axis of the through hole 290 is parallel to the cabinet door 120; when the electromagnet 250 does not engage the stop rod 280, the locking rod 170 is directly opposite to the through hole 290; the inner diameter of the through hole 290 is larger than the diameter of the locking rod 170.

[0036] Specifically, this 35kV split-type high-voltage switchgear also includes a second spring 260; a connecting plate 270 is vertically connected to the side of the stop rod 280 facing away from the positioning rod 310; one end of the second spring 260 is connected to the side of the second connecting arm 240 facing the cabinet door 120, and the other end of the second spring 260 is connected to the connecting plate 270; the second spring 260 is always in a compressed state, and the elastic force of the second spring 260 causes the stop rod 280 to tend to abut against the inner wall of the cabinet door 120. When the stop rod 280 abuts against the inner wall of the cabinet door 120, the through hole 290 is directly opposite the locking rod 170, and at this time the through hole 290 and the locking rod 170 are on the same central axis.

[0037] The above technical solution further improves the specific structure of this 35kV split-type high-voltage switchgear. Under normal circumstances, the cabinet door 120 is closed. At this time, the main circuit of the switchgear is closed, and the locking rod 170 extends into the locking groove 160 to lock the cabinet door 120. When the main circuit is closed, the electromagnet 250 attracts the stop rod 280. At this time, the stop rod 280 can block the other end of the locking rod 170, so that the locking rod 170 cannot extend out of the locking groove 160 (as shown in the attached diagram). Figure 3 As shown), when the main circuit is closed, the cabinet door 120 cannot be opened; when the main circuit is open, the electromagnet 250 no longer attracts the stop bar 280. Under the action of the second spring 260, the stop bar 280 abuts against the inner wall of the cabinet door 120. At this time, the through hole 290 is directly opposite the locking bar 170, and the locking bar 170 can move through the through hole 290. Therefore, the locking bar 170 can extend out of the locking groove 160 (as shown in the attached diagram). Figure 2 As shown in the figure, the operator can only move the locking rod 170 when the main circuit is tripped, so that the locking rod 170 can be disengaged from the locking groove 160, and the cabinet door 120 can be opened normally, which is safer.

[0038] In addition, this 35kV split-type high-voltage switchgear also includes a protective cover (not shown); the protective cover is installed on the inner wall of the cabinet door 120; the support block 140, the first connecting arm 230, the second connecting arm 240, the electromagnet 250, the second spring 260, the positioning rod 310, the stop bar 280, and the first spring 210 are all located inside the protective cover; the locking rod 170 can extend out of the protective cover. The end of the operating rod 180 that extends out of the cabinet body 110 is fitted with an anti-slip handle.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A 35 kV split high voltage switchgear, characterized in that, The utility model provides a cabinet door locking device, including cabinet, cabinet door, controller, voltage transformer, electromagnet, lock rod, fender and lock block, the cabinet door is hinged in the cabinet, the voltage transformer sets up in the cabinet for detecting whether the outgoing cable in the cabinet is electrified, the voltage transformer and electromagnet all electric connection in the controller, the lock rod sliding connection is in the inner wall of cabinet door, the lock block is connected in the inner wall of cabinet, the lock block is seted up with lock groove, one end of lock rod can slide embedding lock groove, when one end of lock rod slide embedding lock groove, the cabinet door locking, fender swing joint is in the inner wall of cabinet door, The electromagnet is used for attracting fender, when electromagnet attracts fender, fender can stop the other end of lock rod, to make lock rod unable to stretch out in lock groove, the controller is used for based on whether the outgoing cable in the cabinet is electrified, to control the start and stop of electromagnet.

2. A 35 kV split high voltage switchgear according to claim 1, characterized in that, It also includes a support block and an operating rod; the support block is connected to the inner wall of the cabinet door; the cabinet includes a first cabinet plate arranged vertically; the lock block is arranged on the inner wall of the first cabinet plate; the lock rod is slidably arranged through the support block; the lock rod is parallel to the cabinet door; when the cabinet door is closed, the cabinet door is perpendicular to the first cabinet plate, and the lock slot is opposite to the lock rod; the cabinet door is provided with a horizontally extending waist hole; the operating rod is connected to the lock rod perpendicularly, and the operating rod is movably arranged through the waist hole; one end of the operating rod away from the lock rod extends out of the cabinet door.

3. A 35 kV split high voltage switchgear according to claim 2, characterized in that, It also includes a limiting block; the limiting block is arranged on the inner wall of the first cabinet plate; when the cabinet door is closed, the operating rod is between the support block and the lock block, and the cabinet door abuts against the limiting block.

4. The 35 kV split high voltage switchgear according to claim 2, characterized in that, It also includes a first spring; the lock rod is arranged through the operating rod; the first spring is sleeved on the lock rod; one end of the first spring is connected to the support block, and the other end of the first spring is connected to the operating rod; the first spring is always in a compressed state; the elastic force of the first spring makes one end of the lock rod embedded in the lock slot.

5. A 35 kV split high voltage switchgear according to claim 4, characterized in that, It also includes a first connecting arm and a second connecting arm; the first connecting arm is connected to one side of the support block away from the cabinet door; the first connecting arm is perpendicular to the cabinet door; the second connecting arm is connected to one end of the first connecting arm away from the support block; the second connecting arm is parallel to the cabinet door; the electromagnet is arranged on the second connecting arm.

6. A 35 kV split high voltage switchgear according to claim 5, characterized in that, It also includes a positioning rod; the positioning rod is connected to the inner wall of the cabinet door perpendicularly; the positioning rod is on one side of the support block away from the operating rod; the fender is slidably sleeved on the positioning rod, and the fender and the positioning rod share a common axis; one end of the fender away from the cabinet door is opposite to the electromagnet; the fender is provided with a through hole penetrating through; the central axis of the through hole is parallel to the cabinet door; when the electromagnet does not attract the fender, the lock rod is opposite to the through hole; the inner diameter of the through hole is greater than the diameter of the lock rod.

7. A 35 kV split high voltage switchgear according to claim 6, characterized in that, Second spring; the side of the blocking rod away from the positioning rod is vertically connected with a connecting plate; one end of the second spring is connected to the side of the second connecting arm facing the cabinet door, and the other end of the second spring is connected to the connecting plate; the second spring is always in a compressed state, and the elastic force of the second spring makes the blocking rod have a tendency to abut against the inner wall of the cabinet door.

8. A 35 kV split high voltage switchgear according to claim 7, characterized in that, When the blocking rod abuts against the inner wall of the cabinet door, the through hole is opposite to the lock rod, and at this time, the through hole and the lock rod share a central axis.

9. A 35 kV split high voltage switchgear according to claim 7, characterized in that, The protective cover is further included; the protective cover covers the inner wall of the cabinet door; the supporting block, the first connecting arm, the second connecting arm, the electromagnet, the second spring, the positioning rod, the blocking rod and the first spring are all in the protective cover; the lock rod can extend out of the protective cover.

10. The 35 kV split high voltage switchgear according to claim 2, characterized in that, The end of the operating rod extending out of the cabinet body is sleeved with an anti-skid sleeve.

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