Infrared observation window structure of high-voltage motor junction box

Abstract

The utility model discloses an infrared observation window structure of a high-voltage motor junction box, which comprises the high-voltage motor junction box, a cover plate outside the high-voltage motor junction box is provided with a hole, and the hole is hermetically connected with an infrared observation window. The infrared observation window comprises a metal flange, one end of the metal flange penetrates through a hole in the high-voltage motor junction box cover plate and is connected with the high-voltage motor junction box cover plate in a fastening and sealing mode, an optical glass plate is arranged at the other end of the metal flange, and a protective cover capable of being opened and closed is arranged on the outer side of the optical glass plate. According to the infrared observation window structure of the high-voltage motor junction box, the personal safety of maintainers is ensured, continuous and reliable operation of equipment is ensured, the maintainers can carry out nondestructive testing on the equipment in the high-voltage motor junction box through the infrared observation window, the maintainers can conveniently find hidden dangers and timely solve and protect the hidden dangers, and the maintenance efficiency is improved. And high-voltage accidents are prevented.

Description

Technical Field

[0001] The utility model relates to an infrared observation window structure of a high-voltage motor junction box and belongs to the field of motor manufacturing. Background Art

[0002] The traditional high-voltage motor junction box is a steel plate sealed structure with a blind spot inside, making it impossible to check the terminal status and monitor the internal terminal temperature on site.

[0003] Maintenance personnel must regularly shut down the power, open the junction box to inspect the equipment and monitor the temperature to determine whether the main power wiring is loose, deformed, burned, etc. This consumes a lot of resources and requires a lot of manpower and material resources. On the other hand, it cannot provide timely monitoring and early warning of problems. Summary of the invention

[0004] The technical problem to be solved by the utility model is: how to inspect and monitor the temperature of the equipment in the high-voltage motor junction box under the condition of avoiding power failure and opening the junction box.

[0005] In order to solve the above technical problems, the technical solution of the utility model is to provide an infrared observation window structure of a high-voltage motor junction box, which is characterized in that it includes a high-voltage motor junction box, a cover plate outside the high-voltage motor junction box is provided with a hole, and an infrared observation window is sealed on the hole; the infrared observation window includes a metal flange, one end of the metal flange passes through the hole on the cover plate of the high-voltage motor junction box and is tightly and sealedly connected to the cover plate of the high-voltage motor junction box, and the other end of the metal flange is provided with an optical glass plate, and an openable and closable protective cover is provided on the outer side of the optical glass plate.

[0006] Preferably, the metal flange is composed of two integrally formed circular tubes of different diameters, the circular tube with a larger diameter is the large circular tube, and the circular tube with a smaller diameter is the small circular tube, the large circular tube is sleeved on the outside of one end of the small circular tube, and an external thread is provided on the outside of the other end of the small circular tube, one end of the large circular tube is abutted against the outside of the high-voltage motor junction box cover through a sealing ring, the other end of the small circular tube passes through the hole on the high-voltage motor junction box cover, a ring nut is sleeved on the outside of the other end of the small circular tube, the other end of the small circular tube is threadedly matched and connected to the ring nut, the hole on the high-voltage motor junction box cover matches the outer diameter of the small circular tube, the ring nut is sealed and connected to the inner side of the high-voltage motor junction box cover through a sealing ring, and one end of the small circular tube is sealed and connected to the optical glass plate.

[0007] Preferably, the optical glass plate is connected to the inner wall of one end of the small circular tube through a silicone seal.

[0008] Preferably, one end of the protective cover is rotatably connected to the outer side of the metal flange by bolts or rivets, a through hole is provided on the other end of the protective cover, a screw is provided in the through hole, a threaded hole matching the screw is provided at a corresponding position on the metal flange, and the other end of the protective cover is fastened to the metal flange by screws.

[0009] Preferably, the periphery of the optical glass plate is sealed and connected to the outer side of the large circular tube via a sealing gasket; the optical glass plate is fastened and connected to the threaded holes around the metal flange after one end of a plurality of bolts passes through the optical glass plate.

[0010] Preferably, one end of the protective cover is rotatably connected to the outer side of the optical glass plate by bolts or rivets, the other end of the protective cover is provided with a through hole, a screw is provided in the through hole, a threaded hole matching the screw is provided at a corresponding position on the optical glass plate, and the other end of the protective cover is fastened to the optical glass plate by screws.

[0011] The infrared observation window structure of the high-voltage motor junction box of the utility model can ensure the personal safety of maintenance personnel and ensure the continuous and reliable operation of equipment. Maintenance personnel can perform non-destructive testing on the equipment in the high-voltage motor junction box through the infrared observation window, which is convenient for maintenance personnel to discover hidden dangers, solve and protect them in time, and prevent high-voltage accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of an infrared observation window structure of a high-voltage motor junction box;

[0013] Figure 2 for Figure 1 Schematic side view of

[0014] Figure 3 This is a partial enlarged schematic diagram of the connection between the high-voltage motor junction box and the infrared observation window. DETAILED DESCRIPTION

[0015] In order to make the present invention more obvious and easy to understand, preferred embodiments are described in detail as follows in conjunction with the accompanying drawings.

[0016] Example 1

[0017] The utility model provides an infrared observation window structure of a high-voltage motor junction box, such as Figure 1 , Figure 2 As shown, it includes a high-voltage motor junction box 1, a hole is opened on the cover plate outside the high-voltage motor junction box 1, and an infrared observation window 2 (infrared temperature measurement window) is installed on the hole. Figure 3As shown, the infrared observation window 2 includes a metal flange 21, which is composed of two integrally formed circular tubes with different diameters. The circular tube with a larger diameter is the large circular tube, and the circular tube with a smaller diameter is the small circular tube. The large circular tube is sleeved on the outer side of one end of the small circular tube, and an external thread is arranged on the outer side of the other end of the small circular tube. One end of the large circular tube is abutted against the outer side of the cover plate of the high-voltage motor junction box 1 through a sealing ring 24, and the other end of the small circular tube passes through the hole on the cover plate of the high-voltage motor junction box 1, and a ring nut 26 is sleeved on the outer side of the other end of the small circular tube. The external thread at the other end of the small circular tube is matched with the internal thread of the ring nut 26, and the hole on the cover plate of the high-voltage motor junction box 1 matches the outer diameter of the small circular tube. The ring nut 26 is sealed and connected to the inner side of the cover plate of the high-voltage motor junction box 1 through the sealing ring 24 to ensure water tightness. One end of the small circular tube is sealed and connected to the optical glass plate 25, and an openable and closable protective cover 22 is arranged on the outer side of the optical glass plate 25.

[0018] Among them, the sealing ring 24 is an O-ring made of rubber material; the optical glass plate 25 can transmit infrared rays, visible light, etc. The optical glass plate 25 is connected to the inner wall of one end of the small round tube through a silicone seal. One end of the protective cover 22 is rotatably connected to the outer side of the metal flange 21 through bolts or rivets, and the other end of the protective cover 22 is provided with a through hole, and a screw 23 is provided in the through hole. The corresponding position of the metal flange 21 is provided with a threaded hole matching the screw 23, and the other end of the protective cover 22 is fastened to the metal flange 21 through the screw 23.

[0019] When the equipment in the high-voltage motor junction box is not inspected and the temperature is not monitored, the through hole on the other end of the protective cover 22 is threadedly connected to the corresponding threaded hole on the metal flange 21 through the screw 23, so that the protective cover 22 completely covers the optical glass plate 25; when the equipment in the high-voltage motor junction box needs to be inspected and the temperature is monitored, the screw 23 is screwed to disengage one end of the screw 23 from the threaded hole on the metal flange 21, and then the protective cover 22 is rotated to rotate the other end of the protective cover 22 around one end of the protective cover 22 (the position connected to the outside of the metal flange 21 by bolts or rivets), thereby exposing the optical glass plate 25, and then the maintenance personnel can perform non-destructive testing on the equipment in the high-voltage motor junction box through the infrared observation window. During operation, there is no need to shut down the power supply and open the cover of the high-voltage motor junction box.

[0020] Example 2

[0021] In this embodiment, the optical glass plate 25 is sealed and fastened to the outer side of the large circular tube through a sealing gasket, and can be fastened by passing one end of a bolt through the optical glass plate 25 and the threaded holes on the metal flange 21. One end of the protective cover 22 is rotatably connected to the outer side of the optical glass plate 25 through bolts or rivets, and a through hole is provided on the other end of the protective cover 22 (the side symmetrical to the one end of the protective cover 22 about the center of the circle), and a screw 23 is provided in the through hole, and a threaded hole matching the screw 23 is provided at a corresponding position on the optical glass plate 25.

[0022] When the equipment in the high-voltage motor junction box is not inspected and the temperature is not monitored, the through hole on the other end of the protective cover 22 is threadedly connected to the corresponding threaded hole on the optical glass plate 25 through the screw 23, so that the protective cover 22 completely covers the optical glass plate 25; when the equipment in the high-voltage motor junction box needs to be inspected and the temperature is monitored, the screw 23 is screwed so that one end of the screw 23 is disengaged from the threaded hole on the optical glass plate 25, and then the protective cover 22 is rotated so that the other end of the protective cover 22 rotates around one end of the protective cover 22 (the position connected to the outside of the optical glass plate 25 by bolts or rivets), thereby exposing the optical glass plate 25, and then the maintenance personnel can perform non-destructive testing on the equipment in the high-voltage motor junction box through the infrared observation window. During operation, there is no need to shut down the power supply and open the cover of the high-voltage motor junction box.

[0023] The rest is the same as Example 1.

Claims

1. An infrared observation window structure for a high-voltage motor junction box, characterized in that: It comprises a high-voltage motor junction box (1), a cover plate outside the high-voltage motor junction box (1) is provided with a hole, and an infrared observation window (2) is sealed and connected to the hole; The infrared observation window (2) comprises a metal flange (21), one end of the metal flange (21) passes through a hole on a cover plate of a high-voltage motor junction box (1) and is tightly and hermetically connected to the cover plate of the high-voltage motor junction box (1), the other end of the metal flange (21) is provided with an optical glass plate (25), and an openable and closable protective cover (22) is provided on the outer side of the optical glass plate (25).

2. The infrared observation window structure of a high-voltage motor junction box according to claim 1, characterized in that: The metal flange (21) is composed of two integrally formed circular tubes of different diameters, wherein the circular tube with a larger diameter is the large circular tube, and the circular tube with a smaller diameter is the small circular tube. The large circular tube is sleeved on the outer side of one end of the small circular tube, and the outer side of the other end of the small circular tube is provided with an external thread. One end of the large circular tube abuts against the outer side of the cover plate of the high-voltage motor junction box (1) through a sealing ring (24), and the other end of the small circular tube passes through a hole on the cover plate of the high-voltage motor junction box (1). A ring nut (26) is sleeved on the outer side of the other end of the small circular tube, and the other end of the small circular tube is connected to the ring nut (26) through thread matching. The hole on the cover plate of the high-voltage motor junction box (1) matches the outer diameter of the small circular tube, and the ring nut (26) is sealed and connected to the inner side of the cover plate of the high-voltage motor junction box (1) through a sealing ring (24). One end of the small circular tube is sealed and connected to the optical glass plate (25).

3. An infrared observation window structure for a high-voltage motor junction box according to claim 1 or 2, characterized in that: The optical glass plate (25) is connected to the inner wall of one end of the small circular tube through a silicone seal.

4. The infrared observation window structure of a high-voltage motor junction box according to claim 3, characterized in that: One end of the protective cover (22) is rotatably connected to the outer side of the metal flange (21) by bolts or rivets, the other end of the protective cover (22) is provided with a through hole, a screw (23) is provided in the through hole, a threaded hole matching the screw (23) is provided at a corresponding position on the metal flange (21), and the other end of the protective cover (22) is fastened to the metal flange (21) by the screw (23).

5. The infrared observation window structure of a high-voltage motor junction box according to claim 1 or 2, characterized in that: The periphery of the optical glass plate (25) is sealed and connected to the outer side of the large circular tube via a sealing gasket; the optical glass plate (25) is fastened and connected to the threaded holes around the metal flange (21) after one end of a plurality of bolts passes through the optical glass plate (25).

6. The infrared observation window structure of a high-voltage motor junction box according to claim 5, characterized in that: One end of the protective cover (22) is rotatably connected to the outer side of the optical glass plate (25) via bolts or rivets, the other end of the protective cover (22) is provided with a through hole, a screw (23) is provided in the through hole, a threaded hole matching the screw (23) is provided at a corresponding position on the optical glass plate (25), and the other end of the protective cover (22) is fastened to the optical glass plate (25) via the screw (23).

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