Operation executing mechanism of normal-pressure sealed air cabinet

Abstract

The invention relates to an operation execution mechanism of a normal pressure sealing air cabinet, which comprises a first sealing cover and a second sealing cover, and a circuit breaker mechanism and an isolation mechanism which are correspondingly arranged in the first sealing cover and the second sealing cover, and is characterized in that the first sealing cover comprises a first side plate, a first front cover plate and a first rear cover plate; a switch-on button, a switch-off button, a circuit break indication shaft, an energy storage operation shaft and an energy storage indication shaft of the circuit breaker mechanism respectively penetrate through a first front cover plate, and sealing mechanisms are respectively arranged between the switch-on button, the switch-off button, the circuit break indication shaft, the energy storage operation shaft and the energy storage indication shaft and the first front cover plate. The second sealing cover comprises a second side plate, a second front cover plate and a second rear cover plate, the opening and closing operation shaft, the grounding operation shaft and the isolation indication shaft of the isolation mechanism respectively penetrate through the second front cover plate, and sealing mechanisms are respectively arranged between the opening and closing operation shaft, the grounding operation shaft and the isolation indication shaft and the second front cover plate. The sealing device has the advantages of simple structure, reliable sealing, convenience in disassembly, assembly and maintenance and high practicability.

Description

Technical Field

[0001] The invention relates to an air cabinet, in particular to an operating actuator of a normal pressure sealed air cabinet. Background Art

[0002] As an important equipment in the power system, the atmospheric sealed air cabinet is used to control and protect voltage and current. With the development of the power industry, the sealing scheme of the atmospheric sealed air cabinet has undergone major changes from traditional sealing to integral sealing. The traditional sealing scheme mainly adopts flat sealing and O-type sealing structure. This scheme has great limitations in sealing performance and is easily affected by environmental and operational factors. It is difficult to meet the requirements of dustproof and waterproof. With the continuous advancement of materials, processing technology and design concepts, the integral sealing scheme has gradually replaced the traditional sealing scheme and become a development trend. Compared with the traditional sealing scheme, the integral sealing scheme can better resist adverse factors such as dust, gas, and humidity. However, the existing integral sealing scheme has problems such as complex structure, inconvenient disassembly and maintenance, and poor reliability in actual application, which needs to be further improved or perfected. Summary of the invention

[0003] The object of the present invention is to provide an operating actuator for a normal pressure sealed air cabinet, which has the advantages of simple structure, low cost, reliable sealing, convenient disassembly and maintenance, and strong practicality.

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides an operating actuator of a normal pressure sealed air cabinet, comprising a first sealing cover and a second sealing cover which are distributed up and down and fixed on the front side of the air box of the air cabinet, and a circuit breaker mechanism and an isolation mechanism which are correspondingly arranged in the first sealing cover and the second sealing cover, wherein the first sealing cover comprises a first side plate which is connected as a whole from head to tail and a first front cover plate and a first rear cover plate which are correspondingly sealed and fixed on the front and rear sides of the first side plate, and a closing button, an opening button, a circuit breaker indication shaft, an energy storage operating shaft and an energy storage indication shaft of the circuit breaker mechanism respectively pass through the first sealing cover and the second sealing cover. A front cover plate, a first sealing mechanism is respectively provided between the closing button and the opening button and the first front cover plate, a second sealing mechanism is respectively provided between the circuit breaker indication shaft, the energy storage operation shaft and the energy storage indication shaft and the first front cover plate, the second sealing cover includes a second side plate connected end to end as an integral whole and a second front cover plate and a second rear cover plate correspondingly sealed and fixed on the front and rear sides of the second side plate, the closing and opening operation shaft, the grounding operation shaft and the isolation indication shaft of the isolation mechanism respectively pass through the second front cover plate, and a third sealing mechanism is respectively provided between the closing and opening operation shaft, the grounding operation shaft and the isolation indication shaft and the second front cover plate.

[0005] Furthermore, the present invention provides an operating actuator for a normal pressure sealed air cabinet, wherein the front side of the first side panel is fixed with a first flange by welding sealing, the first front cover plate is fixed to the first flange by screws, a first sealing gasket is provided between the first front cover plate and the first flange, and the first rear cover plate is fixed to the rear side of the first side panel by welding sealing.

[0006] Furthermore, the present invention provides an operating actuator for a normal pressure sealed air cabinet, wherein the front side of the second side plate is fixed with a second flange by welding sealing, the second front cover plate is fixed to the second flange by screws, a second sealing gasket is provided between the second front cover plate and the second flange, and the second rear cover plate is fixed to the rear side of the second side plate by welding sealing.

[0007] Furthermore, the present invention provides an operating actuator for a normal pressure sealed air cabinet, wherein the first sealing mechanism comprises a first flange sleeve passing through a first front cover plate and fixed by a first nut, a first outer seal extruded on the first front cover plate is clamped on the first flange sleeve through a sealing groove, a first inner seal is clamped in the first flange sleeve through a retaining ring, the closing button and the opening button respectively pass through the first inner seal corresponding to the first sealing mechanism; the first outer seal is an O-ring, and the first inner seal is a skeleton oil seal.

[0008] Furthermore, the present invention provides an operating actuator for a normal pressure sealed air cabinet, wherein the second sealing mechanism comprises a second flange sleeve passing through the first front cover plate and fixed by a second nut, a second outer seal extruded on the first front cover plate is clamped on the second flange sleeve through a sealing groove, a second inner seal is clamped in the second flange sleeve through a sealing groove, and the circuit breaker indication shaft, the energy storage operating shaft and the energy storage indication shaft respectively pass through the second inner seal corresponding to the second sealing mechanism; the second outer seal and the second inner seal are both O-rings.

[0009] Furthermore, the present invention provides an operating actuator for a normal pressure sealed air cabinet, wherein the third sealing mechanism includes a third flange sleeve passing through the second front cover plate and fixed by a third nut, the third flange sleeve is clamped with a third outer seal extruded on the second front cover plate through a sealing groove, the third flange sleeve is clamped with a third inner seal through a sealing groove, the opening and closing operating shaft, the grounding operating shaft and the isolation indication shaft respectively pass through the third inner seal corresponding to the third sealing mechanism; the third outer seal and the third inner seal are both O-rings.

[0010] Furthermore, the present invention provides an operating actuator for a normal pressure sealed air cabinet, wherein a first aviation plug for connecting to an electric control box is sealed and fixed on the first side panel, and a second aviation plug for connecting to the electric control box is sealed and fixed on the second side panel.

[0011] Furthermore, the present invention provides an operating actuator of a normal pressure sealed air cabinet, wherein a triangular first crank arm is fixed on the circuit breaker indication shaft, and also includes a first interlock plate that can slide up and down, and two first long holes are provided on the first interlock plate, and first guide columns fixed on the first front cover plate are correspondingly provided in the first long holes, and an upper tension spring is provided between the first guide column and the first interlock plate on its lower side; when the circuit breaker mechanism is closed by pressing the closing button, the circuit breaker indication shaft rotates clockwise, and the first interlock plate slides downward under the squeezing of the first crank arm and blocks the opening and closing operating shaft; when the circuit breaker mechanism is opened by pressing the opening button, the circuit breaker indication shaft rotates counterclockwise, and the first interlock plate slides upward under the pulling of the upper tension spring and makes way for the opening and closing operating shaft.

[0012] Furthermore, the present invention provides an operating actuator of a normal pressure sealed air cabinet, wherein a triangular second crank arm is fixed on the isolation indicating shaft, and also includes a second interlocking plate which can slide up and down and is provided with two second elongated holes, and a second guide column fixed on the first front cover plate or / and the second front cover plate is correspondingly provided in the second elongated holes, and a lower tension spring is provided between the second guide column and the second interlocking plate on its upper side; when the isolation mechanism closes the switch by rotating the opening and closing operating shaft counterclockwise, the isolation indicating shaft rotates clockwise, and the second interlocking plate slides upward under the squeezing of the second crank arm and makes way for the blocking of the closing button, and when the isolation mechanism opens the switch by rotating the opening and closing operating shaft clockwise, the isolation indicating shaft rotates counterclockwise, and the second interlocking plate slides downward under the pulling of the lower tension spring and blocks the opening and closing operating shaft.

[0013] Furthermore, the present invention provides an operating actuator for a normal pressure sealed air cabinet, wherein an indicator disk and a fan-shaped third crank arm are fixed on the isolation indicating shaft, and also includes a third interlock plate which can slide up and down and is provided with two third elongated holes, and a second guide column fixed on the second front cover plate is correspondingly provided in the third elongated hole, and a latch for locking the cable compartment door is fixed on the third interlock plate, and a compression spring is provided between the upper side of the locking cable compartment door and the latch; when the cable compartment door is closed and the grounding and opening switch is performed by rotating the grounding operating shaft counterclockwise, the isolation indicating shaft rotates clockwise, and the indicator disk clears the blocking of the opening and closing operating shaft, and the third interlock plate slides downward under the squeezing of the third crank arm and inserts the latch into the corresponding pin hole on the cable compartment door, and when the grounding and closing switch is performed by rotating the grounding operating shaft clockwise, the isolation indicating shaft rotates counterclockwise, and the indicator disk blocks the opening and closing operating shaft, and the third interlock plate slides upward under the pressure of the compression spring and pulls the latch out of the pin hole on the cable compartment door.

[0014] Compared with the prior art, the operating actuator of the atmospheric pressure sealed air cabinet of the present invention has the following advantages: the present invention provides a first sealing cover and a second sealing cover which are distributed up and down and fixed on the front side of the air box of the air cabinet, and a circuit breaker mechanism and an isolation mechanism which are correspondingly arranged in the first sealing cover and the second sealing cover, so that the first sealing cover is provided with a first side plate which is connected end to end as a whole, and a first front cover plate and a first rear cover plate which are correspondingly sealed and fixed on the front and rear sides of the first side plate, so that the closing button, the opening button, the circuit breaker indication shaft, the energy storage operation shaft and the energy storage indication shaft of the circuit breaker mechanism are respectively passed through the first front cover The invention provides a first sealing mechanism between the closing button and the opening button and the first front cover plate, and a second sealing mechanism between the circuit breaker indication shaft, the energy storage operation shaft and the energy storage indication shaft and the first front cover plate, so that the second sealing cover is provided with a second side plate connected end to end as a whole and a second front cover plate and a second rear cover plate correspondingly sealed and fixed on the front and rear sides of the second side plate, so that the opening and closing operation shaft, the grounding operation shaft and the isolation indication shaft of the isolation mechanism pass through the second front cover plate respectively, and a third sealing mechanism is respectively provided between the opening and closing operation shaft, the grounding operation shaft and the isolation indication shaft and the second front cover plate. Thus, an operating actuator of a normal pressure sealed air cabinet with simple structure, low cost, reliable sealing, convenient disassembly and maintenance, and strong practicality is formed. Compared with the prior art, the present invention can effectively prevent external impurities from entering the interior of the two mechanisms by allowing the circuit breaker mechanism and the isolation mechanism to adopt an integral sealing scheme respectively, thereby protecting the internal components from pollution and damage, improving the sealing performance and reliability, and being conducive to reducing the complexity of disassembly and maintenance, thereby reducing the work intensity of the operator.

[0015] The operating actuator of a normal pressure sealed air cabinet of the present invention is further described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of an operating actuator of a normal pressure sealed air cabinet of the present invention;

[0017] Figure 2 It is a left view of an operating actuator of a normal pressure sealed air cabinet of the present invention;

[0018] Figure 3 It is an axonometric diagram of an operating actuator of a normal pressure sealed air cabinet of the present invention;

[0019] Figure 4 for Figure 1 AA view in the figure;

[0020] Figure 5 for Figure 1 BB view in the figure;

[0021] Figure 6 for Figure 1CC view in the figure;

[0022] Figure 7 for Figure 2 A partial enlarged view of the D position in the middle;

[0023] Figure 8 for Figure 4 A partial enlarged view of the E position in the middle;

[0024] Fig. 9 for Figure 5 A partial enlarged view of the F position in the middle;

[0025] Fig.10 for Figure 6 A partial enlarged view of the G position in the middle. DETAILED DESCRIPTION

[0026] First of all, it should be explained that the directional words such as up, down, left, right, front and back described in the present invention are only described according to the drawings for the convenience of understanding, and are not intended to limit the technical solution and the scope of protection of the present invention.

[0027] like Figures 1 to 10The specific implementation of the operating actuator of a normal pressure sealed air cabinet of the present invention is shown, comprising a first sealing cover 1 and a second sealing cover 1' which are distributed up and down and fixed on the front side of the air box of the air cabinet, and a circuit breaker mechanism and an isolation mechanism which are correspondingly arranged in the first sealing cover 1 and the second sealing cover 1'. The first sealing cover 1 is provided with a first side plate 11 which is connected end to end as a whole, and a first front cover plate 12 and a first rear cover plate 13 which are correspondingly sealed and fixed on the front and rear sides of the first side plate 11, and the closing button 2, the opening button 3, the circuit breaker indication shaft 4, the energy storage operating shaft 5 and the energy storage indicating shaft 6 of the circuit breaker mechanism are respectively passed through the first front cover plate 12, so as to operate the circuit breaker mechanism and observe its closing and opening and energy storage states, and a first sealing mechanism is respectively arranged between the closing button 2 and the opening button 3 and the first front cover plate 13, and a second sealing mechanism is respectively arranged between the circuit breaker indication shaft 4, the energy storage operating shaft 5 and the energy storage indicating shaft 6 and the first front cover plate 12, so as to ensure the sealing reliability of the first sealing cover 1. The second sealing cover 1' is provided with a second side plate 11' connected end to end as one body, and a second front cover plate 12' and a second rear cover plate 13' correspondingly sealed and fixed on the front and rear sides of the second side plate 11', and the opening and closing operating shaft 2', the grounding operating shaft 3' and the isolation indication shaft 4' of the isolation mechanism are respectively passed through the second front cover plate 12', so as to operate the isolation mechanism and observe its opening and closing and grounding states, and a third sealing mechanism is respectively provided between the opening and closing operating shaft 2', the grounding operating shaft 3' and the isolation indication shaft 4' and the second front cover plate 12' to ensure the sealing reliability of the second sealing cover 1'. Through the above arrangement, an operating actuator of a normal pressure sealed air cabinet with simple structure, low cost, reliable sealing, convenient disassembly and maintenance, and strong practicality is formed. Compared with the prior art, the present invention can effectively prevent external impurities from entering the interior of the two mechanisms by allowing the circuit breaker mechanism and the isolation mechanism to adopt an integral sealing scheme respectively, thereby protecting the internal components from pollution and damage, improving the sealing performance and reliability, and being conducive to reducing the complexity of disassembly and maintenance, thereby reducing the work intensity of the operator. It should be noted that the circuit breaker mechanism and the isolation mechanism are prior arts in the art, and their structures and connection transmission relationships are well known to technicians.

[0028] As a specific embodiment, the present invention fixes the first flange 14 by welding and sealing on the front side of the first side plate 11, fixes the first front cover plate 12 on the first flange 14 by screws, and sets a first sealing gasket (not shown in the figure) between the first front cover plate 12 and the first flange 14, and fixes the first rear cover plate 13 by welding and sealing on the rear side of the first side plate 11. The first sealing cover 1 of this arrangement has the characteristics of simple structure, convenient disassembly and assembly, and reliable sealing. Similarly, the present invention fixes the second flange 14' by welding and sealing on the front side of the second side plate 11', fixes the second front cover plate 12' on the second flange 14' by screws, and sets a second sealing gasket (not shown in the figure) between the second front cover plate 12' and the second flange 14', and fixes the second rear cover plate 13' by welding and sealing on the rear side of the second side plate 11'. The second sealing cover 1' of this arrangement has the characteristics of simple structure, convenient disassembly and assembly, and reliable sealing. As a specific embodiment, the present invention adopts the following setting mode for the first sealing mechanism: a first flange sleeve 122 is set to pass through the first front cover plate 12 and fixed by a first nut 121, a first outer seal 123 extruded on the first front cover plate 12 is clamped on the first flange sleeve 122 through a sealing groove, a first inner seal 124 is clamped in the first flange sleeve 122 through a retaining ring, and the closing button 2 and the opening button 3 are respectively passed through the first inner seal 124 of the corresponding first sealing mechanism. Among them, the first outer seal 123 is an O-ring, and the first inner seal 124 is a skeleton oil seal. The first sealing mechanism of this setting ensures the sealing reliability of the first sealing cover 1 without affecting the pressing action of the closing button 2 and the opening button 3, and can effectively prevent the leakage of the medium in the first sealing cover 1. As a specific embodiment, the present invention adopts the following arrangement for the second sealing mechanism: a second flange sleeve 126 is provided that passes through the first front cover plate 12 and is fixed by a second nut 125, a second outer seal 127 that is pressed on the first front cover plate 12 is clamped on the second flange sleeve 126 through a sealing groove, a second inner seal 128 is clamped in the second flange sleeve 126 through a sealing groove, and the circuit breaker indication shaft 4, the energy storage operating shaft 5 and the energy storage indicating shaft 6 are respectively passed through the second inner seal 128 of the corresponding second sealing mechanism. Among them, the second outer seal 127 and the second inner seal 128 are both O-rings. The second sealing mechanism of this arrangement also ensures the sealing reliability of the first sealing cover 1 on the basis of not affecting the rotation of the circuit breaker indication shaft 4, the energy storage operating shaft 5 and the energy storage indicating shaft 6.Similarly, the present invention provides the third sealing mechanism with a third flange sleeve 122' that passes through the second front cover plate 12' and is fixed by a third nut 121', and a third outer seal 123' extruded on the second front cover plate 12' is clamped on the third flange sleeve 122' through a sealing groove, and a third inner seal 124' is clamped in the third flange sleeve 122' through a sealing groove, and the opening and closing operating shaft 2', the grounding operating shaft 3' and the isolation indication shaft 4' are respectively passed through the third inner seal 124' of the corresponding third sealing mechanism. Among them, the third outer seal 123' and the third inner seal 124' are both O-rings. This third sealing mechanism also ensures the sealing reliability of the second sealing cover 1' without affecting the rotation of the opening and closing operating shaft 2', the grounding operating shaft 3' and the isolation indication shaft 4'. Through the above analysis, it can be known that the present invention improves the sealing performance and reliability, as well as the corrosion resistance and wear resistance, by allowing the first sealing cover 1 and the second sealing cover 1' to adopt multiple sealing measures, so that the first sealing cover 1 and the second sealing cover 1' can be applied to a variety of environments. In practical applications, in order to facilitate wiring, the present invention also seals and fixes a first aviation plug 15 for connecting the electric control box and the circuit breaker mechanism on the first side plate 11, and seals and fixes a second aviation plug 15' for connecting the electric control box and the isolation mechanism on the second side plate 11'.

[0029] As a specific embodiment, the present invention fixes a triangular first crank arm 41 on the circuit breaker indication shaft 4, and sets a first interlocking plate 7 that can slide up and down, wherein two first long holes 71 are set on the first interlocking plate 7, and the first long holes 71 are correspondingly provided with first guide posts 72 fixed on the first front cover plate 12, and an upper tension spring is provided between the first guide post 72 and the first interlocking plate 7 below it. When the circuit breaker mechanism is closed by pressing the closing button 2, the circuit breaker indication shaft 4 rotates clockwise, and the first interlocking plate 7 slides downward under the pressure of the first crank arm 41 and blocks the opening and closing operating shaft 2'. When the circuit breaker mechanism is opened by pressing the opening button 3, the circuit breaker indication shaft 4 rotates counterclockwise, and the first interlocking plate 7 slides upward under the pull of the upper tension spring and makes way for the opening and closing operating shaft 2'. This setting enables the circuit breaker mechanism and the isolation mechanism to have an interlocking function. Only when the circuit breaker mechanism is in the open state can the opening and closing operating shaft 2' of the isolation mechanism be operated. When the circuit breaker mechanism is in the closed state, the isolation mechanism cannot be operated because the first interlock plate 7 blocks the opening and closing operating shaft 2', thereby ensuring the correct operation sequence, effectively avoiding misoperation, and improving safety and reliability. Similarly, in this specific embodiment, a triangular second crank arm 41' is fixed on the isolation indication shaft 4', and a second interlock plate 8 that can slide up and down is provided, wherein two second elongated holes 81 are provided on the second interlock plate 8, and a second guide column 82 fixed on the first front cover plate 12 or / and the second front cover plate 12' is correspondingly provided in the second elongated hole 81, and a downward tension spring is provided between the second guide column 82 and the second interlock plate 8 on its upper side. When the isolation mechanism closes the circuit by rotating the closing and opening operating shaft 2' counterclockwise, the isolation indication shaft 4' rotates clockwise, and the second interlocking plate 8 slides upward under the pressure of the second crank arm 41' and makes way for the blocking of the closing button 2. When the isolation mechanism opens the circuit by rotating the closing and opening operating shaft 2' clockwise, the isolation indication shaft 4' rotates counterclockwise, and the second interlocking plate 8 slides downward under the pull of the lower tension spring and blocks the closing and opening operating shaft 2'. This setting enhances the interlocking function between the circuit breaker mechanism and the isolation mechanism. The circuit breaker mechanism can only be closed after the isolation mechanism is closed. When the isolation mechanism is in the open state, the circuit breaker mechanism cannot be closed because the second interlocking plate 8 blocks the closing button 2, which further ensures the correct operation sequence and enhances safety and reliability.

[0030] As a specific embodiment, the present invention also fixes an indicator disk 42' and a fan-shaped third crank arm 43' on the isolation indicator shaft 4', and provides a third interlocking plate 9 that can slide up and down, wherein the third interlocking plate 9 is provided with two third elongated holes 91, and the third elongated holes 91 are correspondingly provided with second guide columns 92 fixed on the second front cover plate 12', and the third interlocking plate 9 is fixed with a latch 93 for locking the cable compartment door, and a compression spring is provided between the upper side of the locking cable compartment door and the latch 93. When the cable door is closed and the grounding operation shaft 3' is rotated counterclockwise to open the switch, the isolation indication shaft 4' rotates clockwise, the indicator disk 42' clears the blockage of the opening and closing operation shaft 2', the third interlock plate 9 slides downward under the pressure of the third crank arm 43' and inserts the latch 93 into the corresponding pin hole on the cable door. When the grounding operation shaft 3' is rotated clockwise to close the switch, the isolation indication shaft 4' rotates counterclockwise, the indicator disk 42' blocks the opening and closing operation shaft 2', and the third interlock plate 9 slides upward under the pressure of the compression spring and pulls the latch 93 out of the pin hole on the cable door. This setting further enhances the interlocking function of the isolation mechanism. Only after the cable door is closed and the grounding operation is opened, the isolation mechanism can be opened and closed by the opening and closing operation shaft 2'. When the cable door is opened and the grounding is in the open state, the isolation mechanism cannot be opened and closed because the third interlock plate 9 blocks the opening and closing operation shaft 2', which further enhances safety and reliability.

[0031] Through the above analysis, it can be seen that the present invention ensures the logical relationship and coordination between various operations by interlocking the circuit breaker mechanism and the isolation mechanism, which can effectively avoid misoperation and conflict, and improve the safety and reliability of operation. The overall process of interlocking is as follows: close the cable compartment door, use the handle to rotate the grounding operating shaft 3' counterclockwise, the isolation indication shaft 4' rotates clockwise, the third crank arm 43' presses down the third interlock plate 9 so that the latch 93 locks the cable compartment door, and the indicator plate 42' makes way for the blocking of the opening and closing operating shaft 2'; use the handle to rotate the opening and closing operating shaft 2' counterclockwise to close the isolation mechanism, the isolation indication shaft 4' continues to rotate clockwise, the second crank arm 41' presses the second interlock plate 8 to make it clear of the blocking of the closing button 2, and after the rotating energy storage operating shaft 5 completes energy storage, press the closing button 2 to close the circuit breaker mechanism, the circuit breaker indication shaft 4 rotates clockwise, and the first crank arm 41 presses down the first interlock plate 7 to form a block for the opening and closing operating shaft 2'. At this point, the closing process of the isolation mechanism and the circuit breaker mechanism is completed. The opening process of the isolation mechanism and the circuit breaker mechanism is as follows: press the opening button 3, the circuit breaker indication shaft 4 rotates counterclockwise to reset, the first interlock plate 7 slides upward under the action of the upper tension spring and makes way for the blocking of the opening and closing operating shaft 2', the handle is used to rotate the opening and closing operating shaft 2' clockwise to open the isolation mechanism, the isolation indication shaft 4' rotates counterclockwise, the second interlock plate 8 slides downward under the action of the lower tension spring and blocks the closing button 2, the handle is used to rotate the grounding operating shaft 3' clockwise, the isolation indication shaft 4' continues to rotate counterclockwise, the indicator disk 42' blocks the opening and closing operating shaft 2', the third crank arm 43' slides upward under the action of the compression spring and causes the latch 93 to be pulled out of the pin hole of the cable compartment door, and then the cable compartment door can be opened.

[0032] The above embodiments are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the design concept of the present invention, various modifications made by those skilled in the art based on the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. An operating actuator for a normal pressure sealed air cabinet, characterized in that: The invention comprises a first sealing cover (1) and a second sealing cover (1') which are distributed up and down and fixed on the front side of the air box of the air cabinet, and a circuit breaker mechanism and an isolation mechanism which are correspondingly arranged in the first sealing cover (1) and the second sealing cover (1'), wherein the first sealing cover (1) comprises a first side plate (11) connected end to end as a whole, and a first front cover plate (12) and a first rear cover plate (13) which are correspondingly sealed and fixed on the front and rear sides of the first side plate (11), a closing button (2), an opening button (3), a circuit breaker indication shaft (4), an energy storage operation shaft (5) and an energy storage indication shaft (6) of the circuit breaker mechanism respectively pass through the first front cover plate (12), and the closing button (2) and the opening button (3) are respectively connected to the first front cover plate (13). A first sealing mechanism is provided, and second sealing mechanisms are respectively provided between the circuit breaker indication shaft (4), the energy storage operation shaft (5), and the energy storage indication shaft (6) and the first front cover plate (12); the second sealing cover (1') comprises a second side plate (11') connected end to end as a whole, and a second front cover plate (12') and a second rear cover plate (13') correspondingly sealed and fixed to the front and rear sides of the second side plate (11'); the opening and closing operation shaft (2'), the grounding operation shaft (3'), and the isolation indication shaft (4') of the isolation mechanism respectively pass through the second front cover plate (12'); and third sealing mechanisms are respectively provided between the opening and closing operation shaft (2'), the grounding operation shaft (3'), and the isolation indication shaft (4') and the second front cover plate (12').

2. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 1, characterized in that: The front side of the first side plate (11) is fixed with a first flange (14) by welding and sealing, the first front cover plate (12) is fixed to the first flange (14) by screws, a first sealing gasket is provided between the first front cover plate (12) and the first flange (14), and the first rear cover plate (13) is fixed to the rear side of the first side plate (11) by welding and sealing.

3. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 1, characterized in that: The front side of the second side plate (11') is fixed with a second flange (14') by welding and sealing, the second front cover plate (12') is fixed to the second flange (14') by screws, a second sealing gasket is provided between the second front cover plate (12') and the second flange (14'), and the second rear cover plate (13') is fixed to the rear side of the second side plate (11') by welding and sealing.

4. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 1, characterized in that: The first sealing mechanism comprises a first flange sleeve (122) passing through the first front cover plate (12) and fixed by a first nut (121); a first outer sealing member (123) pressed on the first front cover plate (12) is clamped on the first flange sleeve (122) through a sealing groove; a first inner sealing member (124) is clamped in the first flange sleeve (122) through a retaining ring; the closing button (2) and the opening button (3) respectively pass through the first inner sealing member (124) corresponding to the first sealing mechanism; the first outer sealing member (123) is an O-ring, and the first inner sealing member (124) is a skeleton oil seal.

5. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 1, characterized in that: The second sealing mechanism comprises a second flange sleeve (126) passing through the first front cover plate (12) and fixed by a second nut (125); a second outer sealing member (127) pressed on the first front cover plate (12) is clamped on the second flange sleeve (126) through a sealing groove; a second inner sealing member (128) is clamped in the second flange sleeve (126) through a sealing groove; the circuit breaker indication shaft (4), the energy storage operation shaft (5) and the energy storage indication shaft (6) respectively pass through the second inner sealing member (128) corresponding to the second sealing mechanism; and the second outer sealing member (127) and the second inner sealing member (128) are both O-rings.

6. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 1, characterized in that: The third sealing mechanism comprises a third flange sleeve (122') passing through the second front cover plate (12') and fixed by a third nut (121'); a third outer sealing member (123') pressed on the second front cover plate (12') is clamped on the third flange sleeve (122') through a sealing groove; a third inner sealing member (124') is clamped in the third flange sleeve (122') through a sealing groove; the opening and closing operating shaft (2'), the grounding operating shaft (3') and the isolation indicating shaft (4') respectively pass through the third inner sealing member (124') corresponding to the third sealing mechanism; and the third outer sealing member (123') and the third inner sealing member (124') are both O-rings.

7. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 1, characterized in that: A first aviation plug (15) for connecting to an electric control box is sealed and fixed on the first side plate (11), and a second aviation plug (15') for connecting to an electric control box is sealed and fixed on the second side plate (11').

8. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 1, characterized in that: The circuit breaker indication shaft (4) is fixed with a triangular first crank arm (41), and also includes a first interlocking plate (7) that can slide up and down, and the first interlocking plate (7) is provided with two first long holes (71), and the first long holes (71) are correspondingly provided with first guide columns (72) fixed on the first front cover plate (12), and an upper tension spring is provided between the first guide column (72) and the first interlocking plate (7) below it; when the circuit breaker mechanism is closed by pressing the closing button (2), the circuit breaker indication shaft (4) rotates clockwise, and the first interlocking plate (7) slides downward under the pressure of the first crank arm (41) and blocks the opening and closing operating shaft (2'); when the circuit breaker mechanism is opened by pressing the opening button (3), the circuit breaker indication shaft (4) rotates counterclockwise, and the first interlocking plate (7) slides upward under the pulling of the upper tension spring and clears the opening and closing operating shaft (2').

9. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 8, characterized in that: A triangular second crank arm (41') is fixed on the isolation indication shaft (4'), and also includes a second interlocking plate (8) which can slide up and down and is provided with two second elongated holes (81); a second guide column (82) fixed on the first front cover plate (12) or / and the second front cover plate (12') is correspondingly provided in the second elongated hole (81); a lower tension spring is provided between the second guide column (82) and the second interlocking plate (8) on its upper side; when the isolation mechanism closes the switch by rotating the opening and closing operating shaft (2') counterclockwise, the isolation indication shaft (4') rotates clockwise, and the second interlocking plate (8) slides upward under the pressure of the second crank arm (41') and makes way for the blocking of the closing button (2); when the isolation mechanism opens the switch by rotating the opening and closing operating shaft (2') clockwise, the isolation indication shaft (4') rotates counterclockwise, and the second interlocking plate (8) slides downward under the pulling of the lower tension spring and blocks the opening and closing operating shaft (2').

10. The operating actuator of the atmospheric pressure sealed air cabinet according to claim 9, characterized in that: The isolation indicating shaft (4') is fixed with an indicating disk (42') and a fan-shaped third crank arm (43'), and also includes a third interlocking plate (9) which can slide up and down and is provided with two third elongated holes (91), and the third elongated holes (91) are correspondingly provided with second guide columns (92) fixed on the second front cover plate (12'), and the third interlocking plate (9) is fixed with a latch (93) for locking the cable compartment door, and a compression spring is provided between the upper side of the locking cable compartment door and the latch (93); when the cable compartment door is closed and the grounding operation shaft (3') is rotated counterclockwise to open the grounding switch, The isolation indicating shaft (4') rotates clockwise, the indicating disk (42') clears the blocking of the opening and closing operating shaft (2'), the third interlocking plate (9) slides downward under the pressure of the third crank arm (43') and inserts the latch (93) into the corresponding pin hole on the cable door; when the grounding operating shaft (3') rotates clockwise to perform grounding and closing, the isolation indicating shaft (4') rotates counterclockwise, the indicating disk (42') blocks the opening and closing operating shaft (2'), and the third interlocking plate (9) slides upward under the pressure of the compression spring and pulls the latch (93) out of the pin hole on the cable door.

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