CN221667895U - Monitoring device for cable sheath - Google Patents

Abstract

The utility model relates to the technical field of cable monitoring, and discloses a monitoring device of a cable sheath, which comprises an upper positioning plate, a lower positioning plate, an upper circulation monitoring sensor and a lower circulation monitoring sensor, wherein annular mounting grooves are formed in opposite sides of the upper positioning plate and the lower positioning plate, the upper circulation monitoring sensor and the lower circulation monitoring sensor are respectively and fixedly arranged in the mounting grooves on the upper positioning plate and the lower positioning plate, the upper circulation monitoring sensor and the lower circulation monitoring sensor are different in size, and an elastic mechanism is arranged between two sides of the upper positioning plate and the lower positioning plate. According to the utility model, the upper circulation monitoring sensor and the lower circulation monitoring sensor with corresponding sizes can be selected and used according to cables with different diameters, so that the applicability is improved, the disassembly and assembly process is more convenient, and the practicability is higher.

Description

A monitoring device for cable sheath

Technical Field

The utility model relates to the technical field of cable monitoring, in particular to a monitoring device for a cable sheath.

Background Art

When the cable sheath insulation is damaged, the metal sheath will be grounded at multiple points, thereby generating sheath circulating current, increasing the sheath loss, affecting the current-carrying capacity of the cable, and even causing the cable to overheat and burn in severe cases. The cable sheath circulating current monitoring device can monitor the grounding loop current of the high-voltage cable and the real-time load of the high-voltage cable. When the high-voltage cable circulating current value is greater than the safety standard, it can automatically issue an early warning to prompt maintenance.

For example, the patent announcement number is CN218099355U, which discloses a high-voltage cable sheath circulating current monitoring device, including a metal shell, a circulating current monitoring sensor coil and a current transformer coil, the metal shell includes a first shell and a second shell, both ends of the first shell and the second shell are provided with connecting protrusions for fixing, the connecting protrusions at both ends are respectively fixedly connected by screws, a current transformer core is arranged in the first shell, and a circulating current monitoring sensor ferrite is arranged in the second shell; the circulating current monitoring sensor coil and the current transformer coil are both wound on a circle composed of the current transformer core and the circulating current monitoring sensor ferrite; the connectors of the current transformer coil and the circulating current monitoring sensor coil extend out of one end of the first shell and the second shell respectively, and the current transformer coil and the circulating current monitoring sensor coil located at the other end of the first shell and the second shell are respectively connected to form a passage through male and female plugs.

The size of the circulating current monitoring device proposed in the above scheme is fixed. Since there are many types of cables and the diameters of each cable are different, the circulating current monitoring device cannot be applied to cables of various specifications, resulting in reduced use effect. Therefore, a monitoring device for cable sheath is proposed.

Utility Model Content

The utility model aims to solve the problem of poor applicability of cable sheath circulation monitoring devices in the prior art and proposes a cable sheath monitoring device.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A monitoring device for a cable sheath comprises an upper positioning plate, a lower positioning plate, an upper circulating flow monitoring sensor and a lower circulating flow monitoring sensor, wherein an annular mounting groove is provided on opposite sides of the upper positioning plate and the lower positioning plate, and the upper circulating flow monitoring sensor and the lower circulating flow monitoring sensor are respectively fixed inside the mounting grooves on the upper positioning plate and the lower positioning plate, and the sizes of the upper circulating flow monitoring sensor and the lower circulating flow monitoring sensor are different, and an elastic mechanism is provided between the two sides of the upper positioning plate and the lower positioning plate.

Preferably, the elastic mechanism includes a fixed seat, a movable ring, a sliding rod and a spring. The fixed seat and the movable ring are respectively fixed on the side walls of the lower positioning plate and the upper positioning plate. The sliding rod is vertically fixed on the top of the fixed seat. The movable ring is slidably arranged on the rod wall of the sliding rod. The spring is sleeved on the rod wall of the sliding rod, and both ends of the spring are respectively fixedly connected to the fixed seat and the movable ring.

Preferably, an anti-falling stopper is fixedly provided on the upper end of the sliding rod.

Preferably, a U-shaped pull rod is fixedly provided on the top of the upper positioning plate.

Preferably, L-shaped supporting feet are fixedly provided on both sides of the bottom of the lower positioning plate, and mounting bolts are provided on the L-shaped supporting feet.

Preferably, the upper positioning plate and the lower positioning plate are both made of insulating PVC plates.

Preferably, the upper circulating flow monitoring sensor and the lower circulating flow monitoring sensor form a circular structure.

Compared with the prior art, the utility model provides a monitoring device for cable sheath, which has the following beneficial effects:

1. The cable sheath monitoring device is provided with an upper positioning plate, a lower positioning plate, an upper circulating current monitoring sensor and a lower circulating current monitoring sensor. The upper circulating current monitoring sensor and the lower circulating current monitoring sensor are arranged between the upper positioning plate and the lower positioning plate in different sizes, so that the upper circulating current monitoring sensor and the lower circulating current monitoring sensor of corresponding sizes can be selected according to the sizes of cables of different sizes, thereby improving applicability.

2. The cable sheath monitoring device comprises a fixed seat, a movable ring, a sliding rod and a spring arranged on both sides of an upper positioning plate and a lower positioning plate. After the upper positioning plate and the lower positioning plate are opened, and the upper circulating flow monitoring sensor and the lower circulating flow monitoring sensor are wrapped on the outer wall of the cable, an elastic force is applied between the fixed seat and the movable ring through the spring, so that the upper circulating flow monitoring sensor and the lower circulating flow monitoring sensor package work together to clamp the cable, thereby increasing the stability of the monitoring.

The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model can select and use upper circulating flow monitoring sensors and lower circulating flow monitoring sensors of corresponding sizes according to cables of different diameters, thereby improving applicability, and the disassembly and assembly process is relatively convenient and more practical.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a cable sheath monitoring device proposed by the present invention;

FIG. 2 is a partial cross-sectional view of FIG. 1 .

In the figure: 1. Upper positioning plate; 2. Lower positioning plate; 3. Upper circulating flow monitoring sensor; 4. Lower circulating flow monitoring sensor; 5. Fixed seat; 6. Movable ring; 7. Sliding rod; 8. Spring; 9. Anti-fall block; 10. U-shaped pull rod; 11. L-shaped support foot; 12. Mounting bolts.

DETAILED DESCRIPTION

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

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

Referring to Figures 1-2, a cable sheath monitoring device includes an upper positioning plate 1, a lower positioning plate 2, an upper circulating current monitoring sensor 3 and a lower circulating current monitoring sensor 4. The upper positioning plate 1 and the lower positioning plate 2 have opposite sides each provided with an annular mounting groove. The upper circulating current monitoring sensor 3 and the lower circulating current monitoring sensor 4 are respectively fixedly arranged inside the mounting grooves on the upper positioning plate 1 and the lower positioning plate 2. The upper circulating current monitoring sensor 3 and the lower circulating current monitoring sensor 4 have different sizes. The upper circulating current monitoring sensor 3 and the lower circulating current monitoring sensor 4 form a circular structure. The upper circulating current monitoring sensor 3 and the lower circulating current monitoring sensor 4 of corresponding sizes can be selected according to the sizes of cables of different sizes. Sensor 4, so that the upper circulating flow monitoring sensor 3 and the lower circulating flow monitoring sensor 4 are wrapped on the outer wall of the cable, and the applicability is improved; a U-shaped pull rod 10 is fixed on the top of the upper positioning plate 1, and the upper positioning plate 1 can be pulled upward by the U-shaped pull rod 10, so that the upper positioning plate 1 is separated from the lower positioning plate 2, and L-shaped supporting feet 11 are fixed on both sides of the bottom of the lower positioning plate 2, and the L-shaped supporting feet 11 are provided with mounting bolts 12, and the upper positioning plate 1 and the lower positioning plate 2 can be supported and installed by the L-shaped supporting feet 11. The upper positioning plate 1 and the lower positioning plate 2 are both made of insulating PVC boards to prevent the upper positioning plate 1 and the lower positioning plate 2 from being conductive.

Referring to Figures 1-2, an elastic mechanism is provided between the two sides of the upper positioning plate 1 and the lower positioning plate 2, and the elastic mechanism includes a fixed seat 5, a movable ring 6, a sliding rod 7 and a spring 8. The fixed seat 5 and the movable ring 6 are respectively fixedly arranged on the side walls of the lower positioning plate 2 and the upper positioning plate 1, and the sliding rod 7 is vertically fixedly arranged on the top of the fixed seat 5, and the movable ring 6 is slidably arranged on the rod wall of the sliding rod 7. The spring 8 is sleeved on the rod wall of the sliding rod 7, and the two ends of the spring 8 are respectively fixedly connected to the fixed seat 5 and the movable ring 6. The movable ring can move on the sliding rod 7 so that the upper positioning plate 1 and the lower positioning plate 2 can be unfolded. At the same time, the spring 8 can apply elastic force to the fixed seat 5 and the movable ring 6, so that the upper positioning plate 1 and the lower positioning plate 2 have the function of elastic expansion and contraction; an anti-falling block 9 is fixedly arranged on the upper end of the sliding rod 7, and the anti-falling block 9 can prevent the movable ring 6 from falling off the sliding rod 7.

During use: the staff first inserts the mounting bolt 12 into the L-shaped support foot 11 to fix the position of the upper positioning plate 1 and the lower positioning plate 2, and then pulls the U-shaped pull rod 10 upward to separate the upper positioning plate 1 and the lower positioning plate 2. At this time, the cable is placed in the upper circulating current monitoring sensor 3 and the lower circulating current monitoring sensor 4 of corresponding size, and then the elastic force on both sides of the upper positioning plate 1 and the lower positioning plate 2 makes the upper circulating current monitoring sensor 3 and the lower circulating current monitoring sensor 4 firmly clamped on the outer wall of the cable. At this time, the circulating current of the cable sheath can be monitored.

The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution and utility model concept of the utility model, shall be covered by the protection scope of the utility model.

Claims (7)

1. A cable sheath monitoring device, comprising an upper positioning plate (1), a lower positioning plate (2), an upper circulating flow monitoring sensor (3) and a lower circulating flow monitoring sensor (4), characterized in that an annular mounting groove is provided on opposite sides of the upper positioning plate (1) and the lower positioning plate (2), the upper circulating flow monitoring sensor (3) and the lower circulating flow monitoring sensor (4) are respectively fixedly arranged inside the mounting grooves on the upper positioning plate (1) and the lower positioning plate (2), the upper circulating flow monitoring sensor (3) and the lower circulating flow monitoring sensor (4) are of different sizes, and an elastic mechanism is provided between the two sides of the upper positioning plate (1) and the lower positioning plate (2). 2. A cable sheath monitoring device according to claim 1, characterized in that the elastic mechanism includes a fixed seat (5), a movable ring (6), a sliding rod (7) and a spring (8), the fixed seat (5) and the movable ring (6) are respectively fixedly arranged on the side walls of the lower positioning plate (2) and the upper positioning plate (1), the sliding rod (7) is vertically fixedly arranged on the top of the fixed seat (5), the movable ring (6) is slidably arranged on the rod wall of the sliding rod (7), the spring (8) is sleeved on the rod wall of the sliding rod (7), and the two ends of the spring (8) are respectively fixedly connected to the fixed seat (5) and the movable ring (6). 3. A cable sheath monitoring device according to claim 2, characterized in that an anti-falling block (9) is fixedly provided on the upper end of the sliding rod (7). 4. A cable sheath monitoring device according to claim 1, characterized in that a U-shaped pull rod (10) is fixedly provided on the top of the upper positioning plate (1). 5. A cable sheath monitoring device according to claim 1, characterized in that L-shaped supporting feet (11) are fixedly provided on both sides of the bottom of the lower positioning plate (2), and mounting bolts (12) are provided on the L-shaped supporting feet (11). 6. A cable sheath monitoring device according to claim 1, characterized in that the upper positioning plate (1) and the lower positioning plate (2) are both made of insulating PVC plates. 7. A cable sheath monitoring device according to claim 1, characterized in that the upper circulating current monitoring sensor (3) and the lower circulating current monitoring sensor (4) form a circular structure.