A highly airtight inflatable cabinet load switch operating mechanism

Abstract

The present invention discloses an operating mechanism of a load switch for an inflatable cabinet with a high degree of sealing, comprising a box cover; a box formed by sealing and welding a bottom plate and surrounding side plates, a step hole being provided at the bottom of the box, a switch being inserted into the step hole, a sealing ring being provided on the switch, the switch and the step hole being sealed by the sealing ring, a silicone layer being coated on the overlapping surfaces of the box and the box cover, and the box and the box cover being connected with screws; an isolation mechanism, the isolation mechanism and its secondary electric wires being fixed on the box, the secondary electric wires of the isolation mechanism being connected with an aviation plug, a sealing gasket being provided between the aviation plug and the box, and the aviation plug being connected with screws of the box; the operating mechanism of the load switch for an inflatable cabinet with a high degree of sealing has a simple processing technology and good assembly order, is easy to install in coordination with a switch, has good operating performance, is safe and reliable, and an interlocking device is added to prevent misoperation, which can effectively improve safety, and the sealing degree of the mechanism in the box is extremely high.

Description

Technical Field

[0001] The invention relates to an operating mechanism for a load switch of a gas-filled cabinet with a high sealing degree. Background Art

[0002] The inflatable cabinet has the characteristics of compact structure, flexible operation, reliable interlocking, etc. It can provide satisfactory technical solutions for various application occasions and different user requirements. The adoption of sensor technology and the latest protection relays, coupled with advanced technical performance and light and flexible assembly solutions, can fully meet the different needs of users. The inflatable cabinet is suitable for small secondary substations, switchgear, box-type substations, residential areas, industrial and mining enterprises, and large shopping malls in the power system, especially for airports, subways, railways and other occasions with high electricity requirements.

[0003] The protective effect of the inflatable cabinet itself is one of the important technical points. The technicians in this field hope to develop an inflatable cabinet load switch operating mechanism with excellent protective effect. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an inflatable cabinet load switch operating mechanism with a high sealing degree, and the sealing degree of the mechanism in the box body is extremely high.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A highly airtight inflatable cabinet load switch operating mechanism, comprising a box cover; a box formed by airtight welding of a bottom plate and surrounding side plates, a step hole is provided at the bottom of the box, a switch is inserted into the step hole, a sealing ring is provided on the switch, the switch and the step hole are sealed by the sealing ring, a silicone layer is coated on the overlapping surface of the box and the box cover, and the box and the box cover are screwed together;

[0007] The isolation mechanism and the secondary wires on the isolation mechanism are fixed on the box body, the secondary wires of the isolation mechanism are connected with an aviation plug, a sealing gasket is arranged between the aviation plug and the box body, and the aviation plug is connected with the box body screws.

[0008] Preferably, the isolation mechanism is connected with a forced interlock for preventing misoperation, and the forced interlock comprises a first lock plate, a second lock plate, an elastic pin, a main shaft cam, an isolation shaft cam and an indication baffle;

[0009] Preferably, the working method of the isolation mechanism comprises the following steps:

[0010] 1) Opening state: When the isolation switch is closed, the indicator baffle rotates clockwise and finally blocks the grounding operation shaft, preventing the grounding operation after the isolation switch is closed; when the grounding switch is closed, the indicator baffle rotates counterclockwise and finally blocks the isolation operation shaft, preventing the isolation operation after the grounding switch is closed;

[0011] 2) When the isolation mechanism is in the open state, the elastic pin on its closing knob is restricted by the second lock plate, so that the closing knob cannot be twisted, and finally the inflatable cabinet load switch operating mechanism cannot be closed when the isolation mechanism is in the open state; when the isolation operating shaft is operated clockwise to achieve isolation closing, the isolation shaft cam also rotates clockwise at the same time, and the second lock plate slides downward, releasing the restriction of the closing knob; the inflatable cabinet load switch operating mechanism can be closed;

[0012] 3) When the operating mechanism of the load switch of the inflatable cabinet is in the closed state, the isolation mechanism cannot be opened: when the operating mechanism of the load switch of the inflatable cabinet is closed, the main shaft cam rotates clockwise, pushing the first lock plate to slide downward, and finally blocking the isolation operating shaft to prevent the isolation handle from being inserted to operate the isolation.

[0013] Preferably, the forced interlock is fixedly connected to the box body.

[0014] Preferably, a manual closing and opening switch operating device is also included, and the manual closing and opening switch operating device includes a closing and opening knob, a knob rod welding assembly, a closing and opening switch pin, a closing and opening switch half shaft and an external reset torsion spring. The manual closing and opening switch operating device breaks the traditional practice. The closing and opening knob drives the knob rod welding assembly, and the knob rod welding assembly pushes the closing and opening switch pin to drive the closing and opening switch half shaft to rotate, and finally completes the closing and opening switch instruction; the closing and opening knob is released, and the knob rod welding assembly is driven by the external reset torsion spring to separate from the closing and opening switch pin and return to the original stop position; the closing and opening switch half shaft also returns to the original stop position due to the drive of the internal torsion spring and the separation of the knob rod welding assembly from the closing and opening switch pin, thereby ensuring the reliability of the next closing and opening switch instruction.

[0015] The beneficial effects of the present invention are:

[0016] The assembly is well organized and easy to install with the switch.

[0017] Easy to use, good operating performance, safe and reliable.

[0018] Adding an interlocking device to prevent misoperation can effectively improve safety.

[0019] The mechanism is extremely airtight in the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The present invention is a schematic diagram of the overall structure of a highly sealed inflatable cabinet load switch operating mechanism.

[0022] Figure 2 The present invention is a partial structural schematic diagram of an operating mechanism of a load switch of an inflatable cabinet with a high degree of sealing.

[0023] Figure 3 The present invention is a partial structural schematic diagram of an operating mechanism of a load switch of an inflatable cabinet with a high degree of sealing.

[0024] Figure 4 The present invention is a partial structural schematic diagram of an operating mechanism of a load switch of an inflatable cabinet with a high degree of sealing.

[0025] Figure 5 The present invention is a schematic structural diagram of a switch of an operating mechanism of a load switch of an inflatable cabinet with a high degree of sealing.

[0026] Figure 6 The present invention is a structural schematic diagram of an isolation mechanism of a load switch operating mechanism of an inflatable cabinet with a high degree of sealing.

[0027] Figure 7 The present invention is a partial structural schematic diagram of an isolation mechanism of a load switch operating mechanism of an inflatable cabinet with a high degree of sealing.

[0028] In the figure:

[0029] 1. Box cover; 2. Box; 3. Step hole; 4. Switch; 5. Sealing ring; 6. Isolation mechanism; 7. Aviation plug; 8. Sealing gasket; 9. First lock plate; 10. Second lock plate; 11. Main shaft cam; 12. Isolation shaft cam; 13. Indicator baffle; 14. Closing and opening knob; 15. Knob rod welding assembly; 16. Closing and opening switch pin; 17. Closing and opening switch half shaft; 18. External reset torsion spring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the embodiments, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left end", "above", "back", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, in this specific embodiment, if the connection or fixing method between the components is not particularly described, the connection or fixing method can be conventional methods such as bolt fixing, nail pin fixing, pin shaft connection, adhesive fixing, or riveting fixing commonly used in the prior art, and therefore, it will not be described in detail in the embodiments.

[0033] Example 1

[0034] like Figure 1-7 As shown, a highly airtight inflatable cabinet load switch operating mechanism comprises a box cover 1; a box body 2 formed by airtight welding of a bottom plate and surrounding side plates, a step hole 3 is provided at the bottom of the box body 2, a switch 4 is inserted into the step hole 3, a sealing ring 5 is provided on the switch 4, the switch 4 and the step hole 3 are sealed by the sealing ring 5, a silicone layer (not shown) is coated on the overlapping surface of the box body 2 and the box cover 1, and the box body 2 and the box cover 1 are screwed together;

[0035] The isolation mechanism 6 and the secondary wires thereon are fixed on the box body 2. The secondary wires of the isolation mechanism 6 are connected to an aviation plug 7. A sealing gasket 8 is provided between the aviation plug 7 and the box body 2. The aviation plug 7 is connected to the box body 2 by screws.

[0036] Example 2

[0037] like Figure 1-7 As shown, a highly airtight inflatable cabinet load switch operating mechanism comprises a box cover 1; a box body 2 formed by airtight welding of a bottom plate and surrounding side plates, a step hole 3 is provided at the bottom of the box body 2, a switch 4 is inserted into the step hole 3, a sealing ring 5 is provided on the switch 4, the switch 4 and the step hole 3 are sealed by the sealing ring 5, a silicone layer (not shown) is coated on the overlapping surface of the box body 2 and the box cover 1, and the box body 2 and the box cover 1 are screwed together;

[0038] The isolation mechanism 6 and the secondary wires thereon are fixed on the box body 2. The secondary wires of the isolation mechanism 6 are connected to an aviation plug 7. A sealing gasket 8 is provided between the aviation plug 7 and the box body 2. The aviation plug 7 is connected to the box body 2 by screws.

[0039] In this embodiment, the isolation mechanism 6 is connected with a forced interlock for preventing misoperation, and the forced interlock includes a first lock plate 9, a second lock plate 10, an elastic pin (not shown), a main shaft cam 11, an isolation shaft cam 12 and an indication baffle 13;

[0040] In this embodiment, the working method of the isolation mechanism 6 includes the following steps:

[0041] 1) Opening state: When the isolation switch is closed, the indicator baffle rotates clockwise and finally blocks the grounding operation shaft, preventing the grounding operation after the isolation switch is closed; when the grounding switch is closed, the indicator baffle rotates counterclockwise and finally blocks the isolation operation shaft, preventing the isolation operation after the grounding switch is closed;

[0042] 2) When the isolation mechanism is in the open state, the elastic pin on its closing knob is restricted by the second lock plate, so that the closing knob cannot be twisted, and finally the inflatable cabinet load switch operating mechanism cannot be closed when the isolation mechanism is in the open state; when the isolation operating shaft is operated clockwise to achieve isolation closing, the isolation shaft cam also rotates clockwise at the same time, and the second lock plate slides downward, releasing the restriction of the closing knob; the inflatable cabinet load switch operating mechanism can be closed;

[0043] 3) When the operating mechanism of the load switch of the inflatable cabinet is in the closed state, the isolation mechanism cannot be opened: when the operating mechanism of the load switch of the inflatable cabinet is closed, the main shaft cam rotates clockwise, pushing the first lock plate to slide downward, and finally blocking the isolation operating shaft to prevent the isolation handle from being inserted to operate the isolation.

[0044] In this embodiment, the forced interlock is fixedly connected to the box body 2 .

[0045] In this embodiment, a manual closing and opening switch operating device is also included, and the manual closing and opening switch operating device includes a closing and opening knob 14, a knob rod welding assembly 15, a closing and opening switch pin 16, a closing and opening switch half shaft 17, and an external reset torsion spring 18. The manual closing and opening switch operating device breaks the traditional practice. The closing and opening knob drives the knob rod welding assembly, and the knob rod welding assembly pushes the closing and opening switch pin to drive the closing and opening switch half shaft to rotate, and finally completes the closing and opening switch instruction; the closing and opening knob is released, and the knob rod welding assembly is driven by the external reset torsion spring to separate from the closing and opening switch pin and return to the original stop position; the closing and opening switch half shaft also returns to the original stop position due to the drive of the internal torsion spring and the separation of the knob rod welding assembly from the closing and opening switch pin, thereby ensuring the reliability of the next closing and opening switch instruction.

[0046] The beneficial effects of the present invention are:

[0047] The assembly is well organized and easy to install with the switch.

[0048] Easy to use, good operating performance, safe and reliable.

[0049] Adding an interlocking device to prevent misoperation can effectively improve safety.

[0050] The mechanism is extremely airtight in the box.

[0051] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention.

Claims

1. A highly airtight inflatable cabinet load switch operating mechanism, characterized in that: include Box cover; A box body formed by sealing and welding a bottom plate and surrounding side plates, a step hole is provided at the bottom of the box body, a switch is inserted into the step hole, a sealing ring is provided on the switch, the switch and the step hole are sealed by the sealing ring, a silicone layer is coated on the overlapping surface of the box body and the box body cover, and the box body and the box body cover are screwed together; An isolation mechanism, wherein the isolation mechanism and the secondary wires thereon are fixed to the box body, the secondary wires of the isolation mechanism are connected to an aviation plug, a sealing gasket is provided between the aviation plug and the box body, and the aviation plug is connected to the box body with screws; and Manual closing and opening operating device; The isolation mechanism is connected with a forced interlock for preventing misoperation, and the forced interlock comprises a first lock plate, a second lock plate, an elastic pin, a main shaft cam, an isolation shaft cam and an indication baffle; The working method of the isolation mechanism comprises the following steps: 1) Opening state: When the isolation switch is closed, the indicator baffle rotates clockwise and finally blocks the grounding operation shaft, preventing the grounding operation after the isolation switch is closed; when the grounding switch is closed, the indicator baffle rotates counterclockwise and finally blocks the isolation operation shaft, preventing the isolation operation after the grounding switch is closed; 2) When the isolation mechanism is in the open state, the elastic pin on its closing knob is restricted by the second lock plate, so that the closing knob cannot be twisted, and finally the inflatable cabinet load switch operating mechanism cannot be closed when the isolation mechanism is in the open state; When the isolation operating shaft is operated clockwise to achieve isolation closing, the isolation shaft cam also rotates clockwise at the same time, the second lock plate slides downward, and the restriction of the closing knob is released; the inflatable cabinet load switch operating mechanism can then close; 3) When the operating mechanism of the load switch of the inflatable cabinet is in the closed state, the isolation mechanism cannot be opened: when the operating mechanism of the load switch of the inflatable cabinet is closed, the main shaft cam rotates clockwise, pushing the first lock plate to slide downward, and finally blocking the isolation operating shaft to prevent the isolation handle from being inserted to operate the isolation; The forced interlock is fixedly connected to the box body; The manual closing and opening switch operating device comprises a closing and opening knob, a knob rod welding assembly, a closing and opening switch pin, a closing and opening switch half shaft and an external reset torsion spring; The closing and opening knob drives the knob rod welding assembly, and the knob rod welding assembly pushes the closing and opening switch pin to drive the closing and opening switch half shaft to rotate, and finally completes the closing and opening switch command; When the closing and opening knob is released, the knob rod welding assembly is driven by the external reset torsion spring to separate from the closing and opening gate pin and return to the original stop position; The closing and opening half shaft also returns to the original stop position due to the driving of the internal torsion spring and the separation of the knob rod welding assembly from the closing and opening pin, thereby ensuring the reliability of the next closing and opening instruction.

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