Observation tube for switchgear

Abstract

The utility model discloses an observation cylinder of switch cabinet, mirror barrel subassembly is detachably connected on base subassembly, and base subassembly is connected on the mounting panel of gas tank, and the mounting panel is provided with the observation port, is provided with the lamp strip in base subassembly, is provided with the concave lens and the convex lens in mirror barrel subassembly, and the concave lens is located one side close to base subassembly. The utility model integrates the lamp strip of illumination on the base subassembly of observation cylinder, and the axial space of observation cylinder is effectively and reasonably utilized, and the occupancy of lamp strip to the installation space of gas tank is saved, and it is more convenient to assemble and maintain.

Description

Technical Field

[0001] This utility model relates to the field of power cabinet technology, and in particular to an observation tube for observing the operation of switches inside a power switch cabinet. Background Technology

[0002] Power switchgear is widely used in power grid distribution. The switchgear includes a gas chamber and a front panel located on one side of the gas chamber. To allow users to observe the operation of the switches inside the gas chamber, an observation tube is usually installed between the gas chamber and the front panel. Operators can observe the position and status of the switch blades inside the gas chamber through the observation holes and mirrors on the front panel. Because the gas chamber is sealed, lighting is also required to illuminate its interior for a clear view.

[0003] The observation tubes and lighting lamps of existing switch cabinets are usually set up separately, which not only requires a large installation space on the gas box, but also makes assembly and maintenance inconvenient. Utility Model Content

[0004] In response to the shortcomings of existing switchgear observation structures, the applicant provides a switchgear observation tube with a reasonable structure, which integrates a lighting strip on the base assembly, reducing the space occupied during installation and facilitating assembly, maintenance, and strip replacement.

[0005] The technical solution adopted in this utility model is as follows: An observation tube for a switch cabinet, wherein the tube assembly is detachably connected to a base assembly, the base assembly is connected to a mounting plate of a gas box, and the mounting plate has an observation port; a light strip is provided inside the base assembly; a concave lens and a convex lens are provided inside the tube assembly, with the concave lens located on the side closer to the base assembly.

[0006] As a further improvement to the above technical solution: The base assembly contains a plano lens, and the plano lens and the light strip are arranged sequentially along the axial direction. The plano lens is close to the mounting plate, and a retaining ring and a seal are provided between the plano lens and the mounting plate. The light strip is close to the lens barrel assembly, and a pressure sleeve is provided between the light strip and the lens barrel assembly.

[0007] The plano lens and the light strip are installed in the housing. A limit ring is installed in the housing and is located between the plano lens and the light strip. The pressure sleeve is connected to the housing by threads and has an installation auxiliary groove.

[0008] The mounting plate is provided with several insertion posts, and the base assembly has several corresponding insertion holes. The insertion posts are inserted into the insertion holes and locked by locking components.

[0009] The lens barrel assembly includes a fixed sleeve, a long barrel body, and an elastic sleeve connected sequentially along the axial direction. The fixed sleeve is detachably connected to the base body. A concave lens is installed inside the fixed sleeve, a convex lens is installed inside the long barrel body, and a plano lens is installed inside the elastic sleeve.

[0010] The long cylindrical body and the fixed sleeve are connected by threads. The elastic sleeve is snapped onto the long cylindrical body. One of the long cylindrical body and the elastic sleeve is provided with a buckle, and the other is provided with a slot. The buckle is snapped into the slot.

[0011] A step is provided on the inner circumferential surface of the fixed sleeve. One side of the concave lens rests on the step and the other side rests on the end of the long cylindrical body.

[0012] The convex lens is biased inside the long cylindrical body and moves towards the elastic sleeve; a second step is opened on the inner circumferential surface of the long cylindrical body, one side of the convex lens abuts against the second step, and the other side of the convex lens abuts against the elastic sleeve through the limiting sleeve.

[0013] The elastic sleeve has an annular groove, and the two plano lenses are secured in the annular groove.

[0014] Both plano lenses (Type 1 and Type 2) use explosion-proof glass sheets, and the elastic sleeves are made of silicone.

[0015] The beneficial effects of this utility model are as follows: This invention integrates a lighting strip on the base assembly of the observation tube, which makes effective and reasonable use of the axial space of the observation tube, saves the space occupied by the lighting strip in the gas box installation, and makes assembly and maintenance easier.

[0016] The detachable connection of the microscope tube assembly to the base assembly of this utility model has at least the following advantages: Firstly, the base assembly can be adapted to various microscope tube assemblies of different specifications. Different specifications of microscope tube assemblies can be replaced according to actual needs. Furthermore, the base assembly also contains a plano lens. After the microscope tube assembly is detached, the base assembly can also be used as a simple observation tube, expanding the usage and scope of the observation tube. Secondly, because the microscope tube assembly is detachable, if the LED strip inside the base assembly is damaged, the microscope tube assembly can be disassembled first, then the pressure sleeve can be removed, the damaged LED strip can be taken out, a new LED strip can be installed, and then the pressure sleeve and microscope tube assembly can be reinstalled. LED strip disassembly, assembly, and maintenance are convenient. Thirdly, regardless of whether the microscope tube assembly or the LED strip is disassembled or maintained, the base assembly's seat always remains connected to the gas box mounting plate, ensuring the effective sealing of the seals and guaranteeing the reliability of the gas box's seal. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is an exploded view of the present invention.

[0019] Figure 3 This is a cross-sectional view of the present invention.

[0020] In the picture: 1. Base assembly; 11. Base body; 111. Insertion hole; 112. Limiting ring; 113. Internal thread; 114. Connecting hole; 12. Plain lens one; 13. Retaining ring; 14. Seal; 15. LED strip; 16. Pressure sleeve; 161. External thread; 162. Mounting auxiliary groove; 2. Lens tube assembly; 21. Fixing sleeve; 211. Step one; 22. Concave lens; 23. Long barrel; 231. Step two; 232. Snap fastener; 24. Convex lens; 25. Limiting sleeve; 26. Elastic sleeve; 261. Ring groove; 262. Snap groove; 27. Plano lens two; 10. Mounting plate; 101. Observation port; 102. Insertion column. Detailed Implementation

[0021] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0022] Figures 1 to 3 As shown, this utility model provides an observation tube for a switch cabinet, including a base assembly 1 and a lens assembly 2. The lens assembly 2 is detachably connected to the base assembly 1. The base assembly 1 is mounted on the mounting plate 10 of the gas box. The mounting plate 10 has an observation port 101 corresponding to the observation tube. The observation tube can observe the switch operation inside the gas box through the observation port 101.

[0023] like Figure 2 , Figure 3 As shown, a plurality of insert posts 102 are provided on the mounting plate 10 extending toward the base assembly 1. A plurality of insert holes 111 are correspondingly opened on the base body 11 of the base assembly 1. The insert posts 102 pass through the insert holes 111 and are locked by locking members, thereby fixing the base body 11 onto the mounting plate 10.

[0024] The base assembly 1 has a base body 11 containing a plano lens 12, a retaining ring 13, a sealing element 14, a light strip 15, and a pressure sleeve 16. The retaining ring 13, plano lens 12, light strip 15, and pressure sleeve 16 are arranged axially from the mounting plate 10 to the lens barrel assembly 2. The sealing element 14 is fitted over the retaining ring 13 and located between the plano lens 12 and the mounting plate 10. A limiting ring 112 protrudes radially inward from the base body 11, located between the plano lens 12 and the light strip 15, separating them. The plano lens 12 is positioned between the limiting ring 112 and the retaining ring 13, with one side of the plano lens 12 abutting against the limiting ring 112 and the other side abutting against the retaining ring 13. The limiting ring 112 and the retaining ring 13 limit the movement of the plano lens 12. The light strip 15 is positioned between the limiting ring 112 and the pressure sleeve 16. One side of the light strip 15 abuts against the limiting ring 112 and the other side abuts against the pressure sleeve 16. The limiting ring 112 and the pressure sleeve 16 limit the light strip 15.

[0025] An internal thread 113 is provided on the inner circumferential surface of the base 11, corresponding to the pressure sleeve 16, and an external thread 161 is provided on the outer circumferential surface of the pressure sleeve 16. The pressure sleeve 16 is screwed into the base 11 through a threaded connection. Several installation auxiliary grooves 162 are evenly provided circumferentially on the inner circumference of the pressure sleeve 16. During disassembly and assembly, an installation tool can be inserted into the installation auxiliary groove 162, and rotating the installation tool can drive the pressure sleeve 16 to be screwed in or out, which facilitates the disassembly and assembly of the pressure sleeve 16.

[0026] The base 11 has several connection holes 114 corresponding to the lens barrel assembly 2. The lens barrel assembly 2 is detachably connected to the connection holes 114 of the base 11 by fasteners.

[0027] The lens barrel assembly 2 includes a fixed sleeve 21, a long barrel 23, and an elastic sleeve 26 connected sequentially along the axial direction. The fixed sleeve 21 is detachably connected to the base 11. The long barrel 23 is connected to the fixed sleeve 21 by a thread. The elastic sleeve 26 is snapped onto the long barrel 23. In this embodiment, a buckle 232 is provided on the long barrel 23, and a slot 262 is provided on the elastic sleeve 26. The buckle 232 is snapped into the slot 262. In other embodiments, a buckle can be provided on the elastic sleeve 26, and a slot can be provided on the long barrel 23.

[0028] A concave lens 22 is provided inside the fixing sleeve 21. A step 211 is provided on the inner circumferential surface of the fixing sleeve 21. One side of the concave lens 22 abuts against the step 211 and the other side abuts against the end of the long cylindrical body 23. The long cylindrical body 23 and the step 211 limit the concave lens 22.

[0029] A convex lens 24 is disposed inside the elongated cylindrical body 23, and the convex lens 24 is offset inside the elongated cylindrical body 23 and moves towards the elastic sleeve 26. A step 231 is formed on the inner circumferential surface of the elongated cylindrical body 23. One side of the convex lens 24 abuts against the step 231, and the other side of the convex lens 24 abuts against the elastic sleeve 26 through the limiting sleeve 25. The limiting sleeve 25 and the step 231 limit the convex lens 24.

[0030] A plano lens 27 is provided inside the elastic sleeve 26. An annular groove 261 is provided inside the elastic sleeve 26, and the plano lens 27 is engaged in the annular groove 261.

[0031] The plano lens 12 and plano lens 27 both use explosion-proof glass, and the elastic sleeve 26 uses a silicone sleeve.

[0032] This utility model integrates a lighting strip 15 on the base assembly 1 of the observation tube, which makes effective and reasonable use of the axial space of the observation tube, saves the space occupied by the lighting strip 15 for the gas box installation, and makes it easier to assemble and maintain. The detachable connection of the telescope tube assembly 2 to the base assembly 1 has at least the following advantages: Firstly, the base assembly 1 can be adapted to various specifications of telescope tube assemblies 2. Depending on actual needs, different specifications of telescope tube assemblies 2 can be replaced. Moreover, the base assembly 1 also contains a plano lens 12. After the telescope tube assembly 2 is detached, the base assembly 1 can also be used as a simple observation tube, expanding the usage and scope of the observation tube. Secondly, since the telescope tube assembly 2 is detachable, if the LED strip 15 inside the base assembly 1 is damaged, the telescope tube assembly 2 can be detached first, then the pressure sleeve 16 can be removed, the damaged LED strip 15 can be taken out, a new LED strip 15 can be installed, and then the pressure sleeve 16 and the telescope tube assembly 2 can be reinstalled. The disassembly, assembly, and maintenance of the LED strip 15 are convenient. Furthermore, regardless of the disassembly, assembly, or maintenance of the telescope tube assembly 2 or the LED strip 15, the base body 11 of the base assembly 1 always remains connected to the gas box mounting plate 10, and the sealing effect of the seal 14 remains effective, ensuring the sealing reliability of the gas box.

[0033] The above description is an explanation of the present utility model and not a limitation thereof. The present utility model can be modified in any form without departing from its spirit.

Claims

1. An observation tube for a switchgear, characterized in that: The lens barrel assembly (2) is detachably connected to the base assembly (1), which is connected to the mounting plate (10) of the air box. The mounting plate (10) has an observation port (101). A light strip (15) is installed inside the base assembly (1). A concave lens (22) and a convex lens (24) are installed inside the lens barrel assembly (2). The concave lens (22) is located on the side close to the base assembly (1).

2. The observation tube of the switchgear according to claim 1, characterized in that: The base assembly (1) is provided with a plano lens (12), and the plano lens (12) and the light strip (15) are arranged in sequence along the axial direction; the plano lens (12) is close to the mounting plate (10), and a retaining ring (13) and a sealing element (14) are provided between the plano lens (12) and the mounting plate (10); the light strip (15) is close to the lens barrel assembly (2), and a pressure sleeve (16) is provided between the light strip (15) and the lens barrel assembly (2).

3. The observation tube of the switchgear according to claim 2, characterized in that: The plano lens (12) and the light strip (15) are set inside the base (11). A limit ring (112) is set inside the base (11). The limit ring (112) is located between the plano lens (12) and the light strip (15). The pressure sleeve (16) is connected to the base (11) by a thread. An installation auxiliary groove (162) is opened on the pressure sleeve (16).

4. The observation tube of the switchgear according to claim 1, characterized in that: The mounting plate (10) is provided with several insertion posts (102), and the base assembly (1) is provided with several insertion holes (111). The insertion posts (102) are inserted into the insertion holes (111) and locked by locking components.

5. The observation tube of the switchgear according to claim 1, characterized in that: The lens tube assembly (2) includes a fixed sleeve (21), a long tube body (23) and an elastic sleeve (26) connected in sequence along the axial direction. The fixed sleeve (21) is detachably connected to the base (11). A concave lens (22) is provided inside the fixed sleeve (21), a convex lens (24) is provided inside the long tube body (23), and a plano lens (27) is provided inside the elastic sleeve (26).

6. The observation tube of the switchgear according to claim 5, characterized in that: The long cylindrical body (23) and the fixed sleeve (21) are connected by threads. The elastic sleeve (26) is snapped onto the long cylindrical body (23). One of the long cylindrical body (23) and the elastic sleeve (26) is provided with a buckle and the other is provided with a slot. The buckle is snapped into the slot.

7. The observation tube of the switchgear according to claim 5, characterized in that: A step (211) is provided on the inner circumferential surface of the fixed sleeve (21). One side of the concave lens (22) rests on the step (211) and the other side rests on the end of the long cylinder (23).

8. The observation tube of the switchgear according to claim 5, characterized in that: The convex lens (24) is biased inside the long cylindrical body (23) and moves towards the elastic sleeve (26); a step two (231) is provided on the inner circumferential surface of the long cylindrical body (23), one side of the convex lens (24) abuts against the step two (231), and the other side of the convex lens (24) abuts against the elastic sleeve (26) through the limiting sleeve (25).

9. The observation tube of the switchgear according to claim 5, characterized in that: An annular groove (261) is provided inside the elastic sleeve (26), and the second plano lens (27) is fitted inside the annular groove (261).

10. The observation tube of the switchgear according to claim 2 or 5, characterized in that: The plano lens 1 (12) and plano lens 2 (27) are made of explosion-proof glass, and the elastic sleeve (26) is made of silicone.

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