A plugging device for distribution network power cable construction

Abstract

The application discloses a plugging device for power cable construction of distribution network, which comprises a mounting unit and a plugging unit. The plugging unit comprises a connecting ring matched with the mounting unit. The connecting ring is provided with a variable-diameter protective cover at one side. The inside of the protective cover is provided with a movable expanding cover unit. The expanding cover unit is used for expanding the end of the protective cover. The mounting unit is provided with an indicator lamp with a switch. The expanding cover unit is provided with an operating rod corresponding to the switch at one side. The expanding cover unit is connected with the operating rod at one side. The application has reasonable structure design, simple operation and convenient use. In the construction process, the cable inlet and outlet on the electrical room are plugged when the construction is stopped. The plugging state can be unsealed when the construction is started, so that the cable can continue to be laid, the construction of the cable is not affected, and the cable inlet and outlet can be plugged when there is no construction, so that the equipment is protected and the equipment is prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of power construction technology, specifically to a sealing device for the construction of power distribution network cables. Background Technology

[0002] According to the requirements of the "Typical Fire Protection Regulations for Power Equipment", all cable holes, openings, shafts, and cable entrances into oil areas that pass through walls, floors, and cable trenches and enter control rooms, cable interlayers, control cabinets, instrument panels, protection panels, etc., must be tightly sealed with fireproof sealant.

[0003] Currently, during cable laying, cables are often laid from one electrical substation to another location; this location is called the electrical substation. Figure 1 As shown. Due to the long construction period of cables, it is necessary to promptly seal the cable inlets and outlets in the power room when work is stopped. If the sealing measures are insufficient, the equipment may be damaged and there is a risk of downtime.

[0004] Therefore, after cables are laid into the electrical room equipment, the cable inlets and outlets should be sealed promptly, and their reliability checked. However, conventional sealing devices cannot meet the need for switching between sealed and unsealed states at any time. When the cable is subsequently installed, the sealing state needs to be quickly removed; otherwise, the efficiency will be affected. Summary of the Invention

[0005] The present invention addresses the aforementioned shortcomings of the existing technology by providing a sealing device for the construction of power distribution network cables, which can conveniently switch between the sealing and non-sealing states to meet the cable usage requirements during work stoppages or construction.

[0006] To achieve the above objectives, the invention provides the following technical solution:

[0007] A sealing device for power distribution cable construction includes an installation unit and a sealing unit. The sealing unit includes a connecting ring that cooperates with the installation unit. One side of the connecting ring is provided with a protective cover with an adjustable end diameter. Inside the protective cover is a movable expansion unit for expanding the end of the protective cover. The installation unit is provided with an indicator light with a switch. One side of the expansion unit is provided with an operating rod corresponding to the switch, and one side of the expansion unit is connected to the operating rod.

[0008] Preferably, the installation unit includes multiple individually detachable protective plates, and a fixing member is provided at the intersection of the protective plates.

[0009] Preferably, the fixing component includes a sealing plate, a slider, an extension plate, and bolts. The sealing plate has a groove for the slider to move. The extension plate is movably mounted on one side of the slider. The end of the extension plate is provided with bolts that connect to the protective plate.

[0010] Preferably, the protective cover includes a protective layer made of flame-retardant material and a wire mesh embedded in the protective layer.

[0011] Preferably, the expansion unit includes a resettable arc-shaped plate, a connecting rod, and a support rod. The support rod is installed inside the connecting ring via the connecting rod. One end of the support rod is a telescopic structure and is connected to the arc-shaped plate, while the other end is connected to the protective cover. A spring is provided between the arc-shaped plate and the connecting ring.

[0012] Preferably, an electromagnet is provided on one side of the connecting ring, and the electromagnet is used to attract one end of the operating rod.

[0013] Preferably, the switch includes a resettable baffle and a conductive part in the groove. The protective plate has a groove on one side, and a rotatable baffle is installed on one side of the groove. The inner end of the baffle and the inner wall of the groove are conductive parts, and the conductive parts are connected to a power source.

[0014] Preferably, a conductive part is provided on one side of the connecting ring, and an electric wire connected to the conductive part is embedded in the mounting unit. The conductive part is connected to an electromagnet.

[0015] Preferably, one end of the operating lever is provided with a movable locking rod, which corresponds to the groove; the protective plate is provided with a groove corresponding to the locking rod on the side near the connecting ring.

[0016] Preferably, the connecting ring contains a shape memory metal, and one side of the shape memory metal has a conductive end. The conductive end is connected to the power supply and the alarm, and the alarm is externally mounted on the mounting unit.

[0017] Compared with existing technologies, the beneficial effects of the invention are:

[0018] 1. The present invention has a reasonable structural design, is simple to operate, and is convenient to use. During construction, the cable inlets and outlets on the power room are sealed when construction stops, and this sealing can be released when construction resumes, allowing the cable to continue to be laid without affecting the cable construction. Furthermore, when construction is not in progress, the cable inlets and outlets can be sealed to protect the equipment and prevent damage.

[0019] 2. The present invention embeds the protective plate into the opening of the power room, which is aesthetically pleasing. The protective plates are connected by fasteners. Due to the special structure of the fasteners, the protective plates can be replaced individually. It does not require much operation during use and is convenient to use.

[0020] When the protective plate needs to be replaced, separate the bolts from the protective plate, then move the extension plate and slider outward along the slide groove. Next, rotate the extension plate so that it is located at the notch at one end of the slide groove. At this point, the extension plate no longer obstructs the movement of the protective plate. The protective plate can then be removed horizontally outward. No other protective plates need to be disassembled during this process, making the operation convenient.

[0021] 3. The present invention is provided with a protective cover and an expansion unit. The expansion unit is used to change the size of the end of the protective cover, so that the device can be used for cables of different specifications and play an effective protection role.

[0022] When it is necessary to adjust the size of the end of the protective cover, the operating rod is moved inward into the connecting ring. The movement of the operating rod causes the arc plate to move, which in turn causes the support rod to move. Since the support rod is connected to the connecting rod, the outer end of the support rod moves outward, thereby expanding the end of the protective cover. In other words, at this time, the sealing unit does not seal the cable, and the cable can move smoothly.

[0023] 4. The present invention fixes the usage state of the protective cover. When the sealing unit is in the state of unsealing the cable, the electromagnet is attracted to the lever on the operating rod, thereby fixing the state of the protective cover.

[0024] When the sealing unit is in the cable-locking state, the electromagnet is de-energized, the spring causes the operating rod to reset, the reset of the operating rod drives the arc plate and support rod to move, the support rod drives the end of the protective cover to retract, thereby tightening the protective cover on the outside of the cable and locking the cable.

[0025] 5. In order to prevent the electromagnet from malfunctioning, the present invention also includes a manual fixing structure, that is, the locking rod on the operating rod is inserted into the groove at different positions to fix the cable in different states.

[0026] When the cable is in the locked state, the lever is inserted into the groove where the baffle is set. At this time, the operating lever causes the baffle to rotate, disconnecting the baffle from the conductive part in the groove. The switch is in the off state, and the indicator light no longer flashes to remind the user. This improves the reliability of the device and prevents the failure to seal the cable inlet and outlet in time after construction.

[0027] 6. The present invention also includes an alarm device, which utilizes the principle that the shape memory metal will deform when the ambient temperature rises during a fire. The shape memory metal is used in conjunction with the conductive end and the alarm to provide timely alarm in the event of a fire, thereby preventing the fire from spreading further. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the background technology;

[0029] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0030] Figure 3 for Figure 2 Rear view;

[0031] Figure 4 Schematic diagram of the fastener structure Figure 1 ;

[0032] Figure 5 Schematic diagram of the fastener structure Figure 2 ;

[0033] Figure 6 A schematic diagram showing the structure after removing the protective cover;

[0034] Figure 7 for Figure 6 A magnified view of a portion of the image;

[0035] Figure 8 for Figure 6 The main view;

[0036] Figure 9 for Figure 6 A schematic diagram of the structure after the middle connecting ring has been cut open;

[0037] Figure 10 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0038] Figure 11 for Figure 10 A schematic diagram of the structure after removing the protective cover;

[0039] Figure 12 This is a schematic diagram of the structure of Example 2.

[0040] In the picture:

[0041] 1-Protective plate, 2-Fixing component, 21-Sealing plate, 22-Slide groove, 23-Slider, 24-Extension plate, 25-Bolt, 3-Indicator light, 4-Baffle, 5-Groove, 61-Connecting ring, 62-Protective cover, 63-Electromagnet, 71-Operating lever, 72-Clamping lever, 73-Arc plate, 74-Spring, 75-Connecting rod, 76-Supporting rod, 81-Memory metal, 82-Conductive end. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1

[0044] A sealing device for power distribution cable construction includes an installation unit and a sealing unit. The installation unit includes multiple individually detachable protective plates 1. Each protective plate 1 has an arc-shaped structure on one side, and a fixing element 2 is provided at the intersection of the protective plates 1. The protective plates 1 are embedded in the opening of the power room, resulting in an aesthetically pleasing overall appearance.

[0045] The protective plates 1 are connected by fasteners 2. Due to the special structure of the fasteners 2, the protective plates 1 can be replaced individually. They do not require much operation during use and are easy to use.

[0046] The fixing component 2 includes a sealing plate 21, a slider 23, an extension plate 24, and a bolt 25. The sealing plate 21 has a groove 22 for the slider 23 to move. The end of the groove 22 has a notch. The notch is smaller than the cross-section of the slider 23 to prevent the slider 23 from disengaging from the groove 22. The extension plate 24 can rotate into the notch so as not to obstruct the movement of the protective plate 1.

[0047] An extension plate 24 is movably mounted on one side of the slider 23. The end of the extension plate 24 is provided with a bolt 25 that connects to the protective plate 1, thus connecting the protective plates 1 at different positions together to ensure the effectiveness of the device.

[0048] When it is necessary to replace the protective plate 1, separate the bolt 25 from the protective plate 1, then move the extension plate 24 and the slider 23 outward along the slide groove 22, and then rotate the extension plate 24 so that the extension plate 24 is located at the notch at one end of the slide groove 22. At this time, the extension plate 24 no longer obstructs the movement of the protective plate 1. The protective plate 1 can be taken out horizontally. During this process, it is not necessary to disassemble other protective plates 1, which is convenient.

[0049] The sealing unit includes a connecting ring 61 that mates with the installation unit. One side of the connecting ring 61 is provided with an annular limiting ring. The limiting ring is located inside the electrical room and is used in conjunction with bolts 25 to ensure the effectiveness of the connection between the protective plate 1, the fixing component 2 and the sealing unit.

[0050] The connecting ring 61 has a flared protective cover 62 on one side with a variable diameter end. The protective cover 62 includes a protective layer made of flame-retardant material and a wire mesh embedded in the protective layer. The protective cover 62 can prevent damage caused by small animals chewing and also has a flame-retardant effect.

[0051] The protective cover 62 is provided with a movable expansion unit inside. The expansion unit is used to expand the end of the protective cover 62 and change the size of the end of the protective cover 62, so that the device can be used for cables of different specifications and play an effective protection role.

[0052] The expansion unit includes a resettable arc plate 73, a connecting rod 75, and a support rod 76. The support rod 76 is movably installed inside the connecting ring 61 via the connecting rod 75. The support rod 76 rotates around the connection point between the connecting rod 75 and the support rod 76. One end of the support rod 76 is a telescopic structure and is connected to the arc plate 73, while the other end is connected to the protective cover 62. A spring 74 is provided between the arc plate 73 and the connecting ring 61.

[0053] When it is necessary to adjust the size of the end of the protective cover 62, the operating rod 71 is moved inward into the connecting ring 61. The movement of the operating rod 71 causes the arc plate 73 to move, and the arc plate 73 causes the support rod 76 to move. Since the support rod 76 is connected to the connecting rod 75, the outer end of the support rod 76 moves outward, thereby expanding the end of the protective cover 62. That is, at this time, the sealing unit does not seal the cable, and the cable can move smoothly.

[0054] The installation unit is equipped with an indicator light with a switch. If the cable inlet and outlet are not sealed, the indicator light will flash continuously as a reminder. The switch includes a resettable baffle 4 and a conductive part in a groove 5. The protective plate 1 has a groove 5 on one side, and a rotatable baffle 4 is installed on one side of the groove 5. The inner end of the baffle 4 and the inner wall of the groove 5 are conductive parts, which are connected to the power supply.

[0055] The expansion unit has an operating lever 71 on one side corresponding to the switch, and the expansion unit is connected to the operating lever 71. An electromagnet 63 is provided on one side of the connecting ring 61, and the electromagnet 63 is used to attract one end of the operating lever 71.

[0056] When the sealing unit is in the state of unsealing the cable, the electromagnet 63 is attracted to the lever 72 on the operating rod 71, thereby fixing the state of the protective cover 62.

[0057] When the sealing unit is in the locked cable state, the electromagnet 63 is de-energized, and the spring 74 causes the operating rod 71 to reset. The reset of the operating rod 71 drives the arc plate 73 and the support rod 76 to move. The support rod 76 drives the end of the protective cover 62 to retract, thereby tightening the protective cover 62 on the outside of the cable and locking the cable.

[0058] At this time, the operating lever 71 causes the baffle 4 to rotate, the baffle 4 to disconnect from the conductive part in the groove 5, the switch is in the off state, and the indicator light no longer flashes to remind, thereby improving the reliability of the device and preventing the failure to seal the cable inlet and outlet in time after the construction is completed.

[0059] The connecting ring 61 has a conductive part on one side, and the mounting unit is embedded with a wire connected to the conductive part. The conductive part is connected to the electromagnet 63.

[0060] The operating lever 71 has a movable locking lever 72 at one end, which corresponds to the groove 5 on the protective plate 1; the protective plate 1 also has a groove 5 corresponding to the locking lever 72 on the side near the connecting ring 61, which, like the aforementioned groove 5, can be inserted into the locking lever 72.

[0061] To prevent malfunctions in the electromagnet 63, a manual fixing structure is also provided, in which the locking lever 72 on the operating rod 71 is inserted into the groove 5 at different positions to fix the cable in different states.

[0062] When the cable is in the locked state, the clamp 72 is inserted into the groove 5 where the baffle 4 is located. At this time, the operating rod 71 causes the baffle 4 to rotate, and the conductive part of the baffle 4 in the groove 5 is disconnected. The switch is in the off state, and the indicator light no longer flashes to remind, thereby improving the reliability of the device and preventing the failure to seal the cable inlet and outlet in time after the construction is completed.

[0063] When the cable is in a freely movable state, the electromagnet 63 attracts the operating rod 71. At this time, the clamping rod 72 is inserted into the groove 5 near the connecting ring 61 to fix the use state of the sealing unit again, making it more reliable.

[0064] When construction is halted at a certain stage, the cable inlets and outlets need to be sealed off.

[0065] First, the electromagnet 63 is de-energized, and the operating rod 71 is reset under the action of the spring 74. The movement of the operating rod 71 drives the arc plate 73 and the support rod 76 to move. Since the support rod 76 is connected to the connecting rod 75, the inner end of the support rod 76 moves towards the inner wall of the connecting ring 61 as the arc plate 73 moves, while its outer end moves towards the outer wall of the cable, so that the protective cover 62 is tightly compressed on the outside of the cable, achieving the sealing effect.

[0066] At the same time, the movement of the operating lever 71 rotates the baffle 4 to one side, causing the switch to be powered off. The indicator light stops flashing after the power is cut off, ensuring reliable sealing. Alternatively, the locking rod 72 can be inserted into the groove 5 on the baffle 4 for fixation, further improving the reliability of the device.

[0067] When construction continues, the sealing unit needs to be removed from the cable inlet and outlet so that the cable can continue to be laid without affecting the cable construction.

[0068] First, separate the lever 72 from the groove 5 and move the operating lever 71 toward the connecting ring 61. At the same time, activate the electromagnet 63 so that the electromagnet 63 attracts the operating lever 71. At this time, the operating lever 71 moves the arc plate 73 toward the connecting ring 61, which drives the support rod 76 to move, so that the outer end of the support rod 76 moves outward, thereby expanding the end of the protective cover 62 to facilitate the entry and exit of the cable.

[0069] The lever 72 can also be inserted into the groove 5 near the connecting ring 61 to further ensure the stability of use; and as the operating lever 71 moves, the baffle 4 resets and re-engages with the groove 5, so that the switch is closed, thereby powering the indicator light and serving as a reminder that the cable can move freely at this location.

[0070] Example 2

[0071] Based on Embodiment 1, the connecting ring 61 is provided with a shape memory metal 81, and a conductive end 82 is provided on one side of the shape memory metal 81. The conductive end 82 is connected to the power supply and the alarm, and the alarm is externally mounted on the mounting unit.

[0072] Utilizing the principle that the shape memory metal 81 deforms due to the rise in ambient temperature during a fire, the shape memory metal 81, in conjunction with the conductive terminal 82 and the alarm, can promptly sound an alarm in the event of a fire, preventing the fire from spreading further.

[0073] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A sealing device for power distribution cable construction, comprising an installation unit and a sealing unit, characterized in that, The sealing unit includes a connecting ring that mates with the installation unit. One side of the connecting ring is provided with a protective cover with a variable diameter at the end. Inside the protective cover is a movable expansion unit for expanding the end of the protective cover. The installation unit is provided with an indicator light with a switch. One side of the expansion unit is provided with an operating lever corresponding to the switch, and one side of the expansion unit is connected to the operating lever. The installation unit includes multiple individually detachable protective plates, and a fixing component is provided at the intersection of the protective plates; The fixing component includes a sealing plate, a slider, an extension plate, and bolts. The sealing plate has a groove for the slider to move. The extension plate is movably mounted on one side of the slider. The end of the extension plate is provided with bolts that connect to the protective plate. The expansion unit includes a resettable arc-shaped plate, a connecting rod, and a support rod. The support rod is installed inside the connecting ring via the connecting rod. One end of the support rod is a telescopic structure and is connected to the arc-shaped plate. The other end of the support rod is connected to the protective cover. A spring is provided between the arc-shaped plate and the connecting ring. An electromagnet is provided on one side of the connecting ring, and the electromagnet is used to attract one end of the operating rod. The switch includes a resettable baffle and a conductive part in a groove. The protective plate has a groove on one side, and a rotatable baffle is installed on one side of the groove. The inner end of the baffle and the inner wall of the groove are conductive parts, and the conductive parts are connected to a power source.

2. The sealing device for power distribution cable construction as described in claim 1, characterized in that, The protective cover includes a protective layer made of flame-retardant material and a wire mesh embedded in the protective layer.

3. The sealing device for power distribution cable construction as described in claim 1, characterized in that, The connecting ring has a conductive part on one side, the mounting unit has an embedded wire connected to the conductive part, and the conductive part is connected to an electromagnet.

4. The sealing device for power distribution cable construction as described in claim 3, characterized in that, One end of the operating lever is provided with a movable locking rod, which corresponds to the groove.

5. The sealing device for power distribution cable construction as described in claim 4, characterized in that, The connecting ring contains shape memory metal, and one side of the shape memory metal has a conductive end. The conductive end is connected to the power supply and the alarm. The alarm is externally mounted on the mounting unit.

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