A voltage sensor

Abstract

The utility model belongs to sensor technical field especially, and it relates to a voltage sensor. The utility model provides a voltage sensor, including cable, be provided with on the cable: voltage sensor, voltage sensor includes high voltage part and low voltage part, high voltage part sets up in the side close to cable end part, high voltage part is connected with cable end part electricity, low voltage part sets up in the side away from cable end part, insulation device, insulation device is wrapped and is set in the outside of voltage sensor, insulation device is connected with cable end part through -going, insulation device fixes voltage sensor on the cable, and the high voltage part of voltage sensor and the end of cable are connected through the wire, and the low voltage part of voltage sensor is connected with ground element, thereby detects voltage, and insulation device is wrapped in voltage sensor, can avoid voltage sensor and ground contact, thereby reduces the risk of discharging to ground element.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, and in particular relates to a voltage sensor. Background Technology

[0002] A voltage sensor is a detection device that can sense the voltage being measured and transform the sensed information into an electrical signal or other required form of information output that meets certain standards, in order to satisfy the requirements of information transmission, processing, storage, display, recording and control. Voltage sensors have been widely used in many fields such as power, electronics, inverters, switching power supplies, and AC frequency conversion speed regulation.

[0003] Existing patent CN213041914U discloses a voltage sensor, which includes a sensor body. A blind hole with threads on its inner sidewall is formed on one end face of the sensor body. A protective cover is fixedly installed on the end of the sensor body with the blind hole, and a sealing plug with its sidewall tightly fitted against the inner sidewall of the blind hole is provided on the protective cover. In this application, when storing the sensor, the protective cover is placed on the end of the sensor body with the blind hole, allowing the sealing plug to be inserted into the blind hole. At this time, the sealing plug is tightly fitted against the inner sidewall of the blind hole, preventing air from entering the blind hole and effectively preventing oxidation and corrosion of the sidewall of the sensor's blind hole. However, voltage sensors are usually placed at the end of cables. Voltage sensors consist of a high-voltage section and a low-voltage section. The high-voltage section of the voltage sensor poses a certain risk of discharge to ground components, which could endanger personal safety. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a voltage sensor that can insulate the voltage sensor at the cable end, thereby reducing the risk of discharge to ground components.

[0005] In view of this, the present invention provides a voltage sensor, characterized in that it includes a cable, wherein the end of the cable is provided with: A voltage sensor is mounted on a cable. The voltage sensor includes a high-voltage section and a low-voltage section. The high-voltage section is located on the side near the end of the cable and is electrically connected to the end of the cable. The low-voltage section is located on the side away from the end of the cable. An insulating device is provided, which is wrapped around the outside of the voltage sensor and is connected through the cable end.

[0006] In this technical solution, the insulation device fixes the voltage sensor to the cable. The high-voltage part of the voltage sensor and the end of the cable are connected by wires, and the low-voltage part of the voltage sensor is connected to the grounding element to detect the voltage. At the same time, the insulation device wraps the voltage sensor to prevent the voltage sensor from contacting the ground, thereby reducing the risk of discharge to the grounding element.

[0007] Furthermore, the insulation device includes: A fixing tube is wrapped around the outer surface of the cable and is fixedly connected to the end of the cable; An insulating outer tube is wrapped around the outside of a fixed tube and is fixedly connected to the fixed tube. The cross-section of the insulating outer tube is elliptical, and a voltage sensor is wrapped between the insulating outer tube and the fixed tube.

[0008] In this technical solution, the fixing tube fixes the insulating outer tube to the end of the cable. The insulating outer tube completely encloses the voltage sensor, which can isolate the voltage sensor from the external environment and prevent the voltage sensor from being exposed to wind and rain. At the same time, the fixing tube can isolate the voltage sensor from the cable and prevent the voltage sensor from being interfered with when receiving information.

[0009] Furthermore, the end of the cable includes a power conductor and an insulation layer, and a wire is provided on the power conductor. The wire passes through the insulating outer tube and is electrically connected to the high-voltage part of the voltage sensor. The inner diameter of the fixing tube is adapted to the outer diameter of the cable's insulation layer.

[0010] Furthermore, a cold shrink sleeve is provided at each end of the insulating outer tube, and the two cold shrink sleeves are arranged opposite each other on the insulating outer tube along the axial direction of the insulating outer tube. The cold shrink sleeves are fixedly connected to the cable.

[0011] In this technical solution, the cold shrink tubing is installed on the cable to seal and fix both ends of the insulating outer tube, preventing the insulating outer tube from shifting on the cable and ensuring the electrical performance and mechanical stability of the cable at the insulating outer tube.

[0012] Furthermore, the voltage sensor is provided with a sealing tube on its exterior, and the sealing tube is provided with a fixing groove inside that is adapted to the external shape of the voltage sensor. The insulating outer tube is provided with a storage groove to accommodate the sealing tube, and the storage groove is embedded in the sealing tube.

[0013] In this technical solution, the sealing tube can be made of rigid resin. When the rigid resin is liquid, the sealing tube is made using the voltage sensor as a model so as to completely seal the voltage sensor and make it waterproof and dustproof.

[0014] Furthermore, the voltage sensor is equipped with a dustproof device, which is used to protect the voltage sensor from dust.

[0015] In this technical solution, when the sensor is idle in the warehouse, moisture and dust in the air will corrode the internal threads of the copper insert of the voltage sensor, thereby affecting the normal use of the voltage sensor. Therefore, when the voltage sensor is not in use, a dustproof device is used to protect the voltage sensor from dust to avoid affecting its normal use.

[0016] Furthermore, the voltage sensor has a connecting post at its upper end. The connecting post is made of copper, is cylindrical, and has a connecting hole.

[0017] Furthermore, the dustproof device includes: A connecting cover is detachably mounted on a connecting post, and a through hole corresponding to the connecting hole is provided on the top of the connecting cover; A dust plug is detachably installed inside a through hole. A locking block is fixedly installed at the upper end of the dust plug. Multiple locking blocks are arranged along the circumference of the dust plug. The outer diameter of the locking block is larger than the diameter of the through hole. The locking block engages with the through hole. A spring is fixedly installed in the center of the locking block. A fixing cover is disposed above the locking block. The fixing cover is fixedly connected to the connecting cover. The inner diameter of the fixing cover is adapted to the diameter of the locking block. The top of the inner wall of the fixing cover is connected to one side of the spring.

[0018] In this technical solution, when the voltage sensor is idle, the connecting cover is placed on the connecting post, and the dust plug is inserted into the connecting hole through the through hole, so that the locking block and the connecting cover are engaged. Then, the fixing cover is placed on the dust plug, so that one side of the spring is connected to the inner top wall of the fixing cover, so that the dustproof mechanism can maintain a certain elasticity and adaptability during use, thereby achieving a better sealing effect.

[0019] Furthermore, a sealing ring is fixedly provided inside the connecting cover, and the outer diameter of the sealing ring is adapted to the inner diameter of the connecting cover.

[0020] In this technical solution, the sealing ring is used to further seal the connection between the connecting cover and the connecting column, preventing dust and moisture from entering the connecting column and corroding it.

[0021] Furthermore, bolts are provided through both sides of the connecting cover, and the bolts are fixedly connected to the connecting column through the connecting cover. Washers are movably provided between the bolts and the side wall of the connecting cover.

[0022] In this technical solution, the connecting cover is threadedly connected to the bolt, which fixes the connecting cover to the connecting post. The washer on the bolt can enhance the fixing strength between the connecting cover and the connecting post and prevent loosening due to vibration or external force. When the voltage sensor is to be used, the connecting cover can be disassembled by rotating the bolt, which is convenient for disassembly.

[0023] The beneficial effects of this utility model are: 1. The insulation device fixes the voltage sensor to the cable. The high-voltage part of the voltage sensor and the end of the cable are connected by wires, and the low-voltage part of the voltage sensor is connected to the grounding element to detect the voltage. At the same time, the insulation device wraps the voltage sensor to prevent the voltage sensor from contacting the ground, thereby reducing the risk of discharge to the grounding element.

[0024] 2. When the voltage sensor is not in use, use a dustproof device to protect it from dust to avoid affecting its normal operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the voltage sensor of this utility model inside the sealing tube; Figure 4 This is a schematic diagram of the structure of the dustproof device of this utility model; Figure 5 This is a cross-sectional structural schematic diagram of the dustproof device of this utility model; Figure 6 This is an exploded structural diagram of the dustproof device of this utility model; Figure 7 This is a partially enlarged D-structure diagram of the dust plug of this utility model; The markings in the diagram are as follows: 1. Cable; 2. Voltage sensor; 3. Insulation device; 4. Fixing tube; 5. Insulating outer tube; 6. Electrical conductor; 7. Insulation layer; 8. Wire; 9. Cold shrink tubing; 10. Sealing tube; 11. Fixing groove; 12. Storage groove; 13. Dustproof device; 14. Connecting post; 15. Connecting hole; 16. Connecting cover; 17. Through hole; 18. Dust plug; 19. Locking block; 20. Spring; 21. Fixing cover; 22. Sealing ring; 23. Bolt; 24. Washer. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0027] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0028] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0029] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0031] Example 1: like Figure 1-7 As shown, this utility model provides a voltage sensor 2, including a cable 1, wherein the end of the cable 1 is provided with: Voltage sensor 2 is disposed on cable 1. Voltage sensor 2 includes a high voltage part and a low voltage part. The high voltage part is disposed on the side near the end of cable 1 and is electrically connected to the end of cable 1. The low voltage part is disposed on the side away from the end of cable 1. An insulating device 3 is provided, which is wrapped around the outside of the voltage sensor 2 and is connected through the end of the cable 1.

[0032] The insulation device 3 fixes the voltage sensor 2 to the cable 1. The high-voltage part of the voltage sensor 2 and the end of the cable 1 are connected by the wire 8. The low-voltage part of the voltage sensor 2 is connected to the grounding element to detect the voltage. At the same time, the insulation device 3 encloses the voltage sensor 2 to prevent the voltage sensor 2 from contacting the ground, thereby reducing the risk of discharge to the grounding element.

[0033] The insulating device 3 includes: A fixing tube 4 is wrapped around the outer surface of the cable 1 and is fixedly connected to the end of the cable 1. An insulating outer tube 5 is wrapped around the outside of a fixed tube 4. The insulating tube is fixedly connected to the fixed tube 4. The cross-section of the insulating outer tube 5 is elliptical. A voltage sensor 2 is wrapped between the insulating outer tube 5 and the fixed tube 4.

[0034] The fixing tube 4 fixes the insulating outer tube 5 to the end of the cable 1. The insulating outer tube 5 completely encloses the voltage sensor 2, which can isolate the voltage sensor 2 from the external environment and prevent the voltage sensor 2 from being exposed to wind and rain. At the same time, the fixing tube 4 can isolate the voltage sensor 2 from the cable 1 and prevent the voltage sensor 2 from being interfered with when receiving information.

[0035] The end of the cable 1 includes a power conductor 6 and an insulation layer 7. A wire 8 is provided on the power conductor 6. The wire 8 passes through the insulating outer tube 5 and is electrically connected to the high-voltage part of the voltage sensor 2. The inner diameter of the fixing tube 4 is adapted to the outer diameter of the insulation layer 7 of the cable 1.

[0036] A cold shrink sleeve 9 is provided at each end of the insulating outer tube 5. The two cold shrink sleeves 9 are arranged opposite each other on the insulating outer tube 5 along the axial direction of the insulating outer tube 5. The cold shrink sleeves 9 are fixedly connected to the cable 1.

[0037] The cold shrink tubing 9 is installed on the cable 1 to seal and fix both ends of the insulating outer tube 5, preventing the insulating outer tube 5 from shifting on the cable 1 and ensuring the electrical performance and mechanical stability of the cable 1 at the insulating outer tube 5.

[0038] The voltage sensor 2 is provided with a sealing tube 10 on its outside. The sealing tube 10 is provided with a fixing groove 11 that matches the external shape of the voltage sensor 2. The insulating outer tube 5 is provided with a storage groove 12 to accommodate the sealing tube 10. The storage groove 12 is embedded in the sealing tube 10.

[0039] The sealing tube 10 can be made of rigid resin. When the rigid resin is liquid, the sealing tube 10 is made using the voltage sensor 2 as a model so as to completely seal the voltage sensor 2. It can be waterproof and dustproof.

[0040] Example 2: like Figure 1-7 As shown, the voltage sensor 2 is provided with a dustproof device 13, which is used to protect the voltage sensor 2 from dust.

[0041] When the sensor is idle in the warehouse, moisture and dust in the air will corrode the internal threads of the copper insert of the voltage sensor 2, thus affecting the normal use of the voltage sensor 2. Therefore, when the voltage sensor 2 is not in use, the dustproof device 13 is used to protect the voltage sensor 2 from dust to avoid affecting its normal use.

[0042] The voltage sensor 2 has a connecting post 14 at its upper end. The connecting post 14 is made of copper and is cylindrical. A connecting hole 15 is provided on the connecting post 14.

[0043] The dustproof device 13 includes: A connecting cover 16 is detachably mounted on the connecting post 14, and a through hole 17 corresponding to the connecting hole 15 is provided on the top of the connecting cover 16. A dust plug 18 is detachably disposed in a through hole 17. A locking block 19 is fixedly disposed at the upper end of the dust plug 18. Multiple locking blocks 19 are disposed along the circumference of the dust plug 18. The outer diameter of the locking block 19 is larger than the diameter of the through hole 17. The locking block 19 is engaged with the through hole 17. A spring 20 is fixedly disposed in the center of the locking block 19. A fixing cover 21 is disposed above the locking block 19. The fixing cover 21 is fixedly connected to the connecting cover 16. The inner diameter of the fixing cover 21 is adapted to the diameter of the locking block 19. The top of the inner wall of the fixing cover 21 is connected to one side of the spring 20.

[0044] When the voltage sensor 2 is idle, the connecting cover 16 is placed on the connecting post 14, and the dust plug 18 is inserted into the connecting hole 15 through the through hole 17, so that the locking block 19 is engaged with the connecting cover 16. Then, the fixing cover 21 is placed on the dust plug 18, so that one side of the spring 20 is connected to the inner top wall of the fixing cover 21, so that the dustproof mechanism can maintain a certain elasticity and adaptability during use, thereby having a better sealing effect.

[0045] A sealing ring 22 is fixedly installed inside the connecting cover 16, and the outer diameter of the sealing ring 22 is adapted to the inner diameter of the connecting cover 16.

[0046] The sealing ring 22 is used to further seal between the connecting cover 16 and the connecting post 14 to prevent dust and moisture from entering the connecting post 14 and corroding it.

[0047] Bolts 23 are provided through both sides of the connecting cover 16. The bolts 23 are fixedly connected to the connecting column 14 through the connecting cover 16. Washers 24 are movably provided between the bolts 23 and the side wall of the connecting cover 16.

[0048] The connecting cover 16 is threadedly connected to the bolt 23, which fixes the connecting cover 16 to the connecting post 14. The washer 24 on the bolt 23 can enhance the fixing strength between the connecting cover 16 and the connecting post 14 and prevent loosening due to vibration or external force. When the voltage sensor 2 is to be used, the connecting cover 16 can be disassembled by rotating the bolt 23 for easy disassembly.

[0049] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A voltage sensor, characterized in that... The cable (1) includes a cable (1) with the following features at its ends: A voltage sensor (2) is disposed on a cable (1). The voltage sensor (2) includes a high-voltage part and a low-voltage part. The high-voltage part is disposed on the side near the end of the cable (1) and is electrically connected to the end of the cable (1). The low-voltage part is disposed on the side away from the end of the cable (1). An insulating device (3) is provided on the outside of the voltage sensor (2) and is connected through the end of the cable (1).

2. A voltage sensor according to claim 1, characterized in that, The insulating device (3) includes: A fixing tube (4) is wrapped around the outer surface of the cable (1) and fixedly connected to the end of the cable (1); An insulating outer tube (5) is wrapped around the outside of a fixed tube (4). The insulating outer tube (5) is fixedly connected to the fixed tube (4). The cross-section of the insulating outer tube (5) is elliptical. A voltage sensor (2) is wrapped between the insulating outer tube (5) and the fixed tube.

3. A voltage sensor according to claim 2, characterized in that, The end of the cable (1) includes a power conductor (6) and an insulation layer (7). A wire (8) is provided on the power conductor (6). The wire (8) passes through the insulating outer tube (5) and is electrically connected to the high-voltage part of the voltage sensor (2). The inner diameter of the fixed tube (4) is adapted to the outer diameter of the insulation layer (7) of the cable (1).

4. A voltage sensor according to claim 2, characterized in that, A cold shrink sleeve (9) is provided at each end of the insulating outer tube (5). The two cold shrink sleeves (9) are arranged opposite each other on the insulating outer tube (5) along the axial direction of the insulating outer tube (5). The cold shrink sleeves (9) are fixedly connected to the cable (1).

5. A voltage sensor according to claim 2, characterized in that, The voltage sensor (2) is provided with a sealing tube (10) on the outside. The sealing tube (10) is provided with a fixing groove (11) that matches the external shape of the voltage sensor (2). The insulating outer tube (5) is provided with a storage groove (12) to accommodate the sealing tube (10). The storage groove (12) is embedded in the sealing tube (10).

6. A voltage sensor according to claim 1, characterized in that, The voltage sensor (2) is provided with a dustproof device (13), which is used to protect the voltage sensor (2) from dust.

7. A voltage sensor according to claim 1, characterized in that, The voltage sensor (2) has a connecting post (14) at its upper end. The connecting post (14) is made of copper and is cylindrical. A connecting hole (15) is provided on the connecting post (14).

8. A voltage sensor according to claim 6, characterized in that, The dustproof device (13) includes: Connecting cover (16), the connecting cover (16) is detachably mounted on the connecting post (14), and the top of the connecting cover (16) is provided with a through hole (17) corresponding to the connecting hole (15). A dust plug (18) is detachably installed in a through hole (17). A locking block (19) is fixedly installed at the upper end of the dust plug (18). Multiple locking blocks (19) are arranged along the circumference of the dust plug (18). The outer diameter of the locking block (19) is larger than the diameter of the through hole (17). The locking block (19) is engaged with the through hole (17). A spring (20) is fixedly installed in the center of the locking block (19). A fixing cover (21) is provided above the card block (19). The fixing cover (21) is fixedly connected to the connecting cover (16). The inner diameter of the fixing cover (21) is adapted to the diameter of the card block (19). The top of the inner wall of the fixing cover (21) is connected to one side of the spring (20).

9. A voltage sensor according to claim 8, characterized in that, A sealing ring (22) is fixedly installed inside the connecting cover (16), and the outer diameter of the sealing ring (22) is adapted to the inner diameter of the connecting cover (16).

10. A voltage sensor according to claim 8, characterized in that, Bolts (23) are provided through both sides of the connecting cover (16). The bolts (23) are fixedly connected to the connecting column (14) through the connecting cover (16). Washers (24) are movably provided between the bolts (23) and the side wall of the connecting cover (16).

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