Voltage sensor

Abstract

The utility model discloses a voltage sensor which comprises a sensor body, the upper end of the sensor body is provided with a copper connecting column, the upper end of the sensor body is provided with a dustproof mechanism, the lower end of the sensor body is detachably connected with an installation mechanism, and the dustproof mechanism comprises a dustproof cover. The lower end of the dustproof cover is detachably connected with the upper end of the sensor body. Through the arranged dustproof mechanism, equipment can effectively prevent dust and impurities from entering the sensor, normal work of the sensor is ensured, dust and water vapor in air are prevented from entering the insert, so that internal threads of the insert are prevented from being rusted, and the sensor can be used immediately after being disassembled, is convenient to use and saves space; by means of the installation mechanism, the equipment can conveniently install and detach the connecting nut, the convenience of installation and maintenance is improved, the needed connecting nut is easy to install, the old connecting nut can be detached, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a voltage sensor. Background Art

[0002] Voltage sensors are widely used in high-voltage distribution networks. The connecting posts at the ends of existing voltage sensors are made of iron blocks, which require additional electroplating processing. The production process is relatively complicated, which also increases the production cost of the product.

[0003] Patent CN107677866A discloses a unidirectional capacitive voltage divider voltage sensor, including an insulator, a primary side and a secondary side. The primary side has a primary high-voltage capacitor, the secondary side has a secondary low-voltage capacitor, the primary terminal cover is connected to the high-voltage end of the primary capacitor, the low-voltage end of the primary capacitor and the high-voltage end of the secondary capacitor are connected in series, and the beginning of the lead wire of the low-voltage end of the primary capacitor is drawn from the middle. The low-voltage end of the secondary capacitor is connected to the grounding nut through the lead wire of the low-voltage end of the secondary capacitor, and the grounding nut lead wire of the grounding nut and the end of the lead wire of the low-voltage end of the primary capacitor are the secondary signal output ends. The outer layer of the product is formed by one-time die-casting of anti-aging silicone rubber, which can provide small signal direct connection for secondary equipment. The primary capacitor is a high-voltage capacitor, and a ceramic capacitor can be used as a high-voltage capacitor for voltage reduction. The secondary capacitor is a low-voltage capacitor, and a ceramic capacitor can be used to reduce the influence of temperature on the secondary voltage. An epoxy resin shell is provided as an insulator.

[0004] At present, when traditional sensors are idle in warehouses, water vapor and dust in the air will corrode the internal threads of the copper inserts, thus affecting the normal use of the sensors. Therefore, there is room for improvement. Most common methods use threaded columns to fix the threaded caps at the bottom of the capacitor core and connect them with bolts and nuts. After long-term use, the nuts are prone to thread slippage, which increases the workload and makes installation and disassembly maintenance inconvenient. Utility Model Content

[0005] The utility model aims to provide a voltage sensor to solve the problem that when the sensor is idle in a warehouse, water vapor and dust in the air will corrode the internal thread of the copper insert, thereby affecting the normal use of the sensor. Therefore, it needs to be improved. Most of the common methods are to fix and install the threaded cap at the bottom of the capacitor core through a threaded column and connect it with bolts and nuts. After long-term use, the nut is prone to thread slippage, which makes the workload large and the installation and disassembly maintenance inconvenient.

[0006] To achieve the above object, the utility model provides the following technical solution: a voltage sensor, comprising a sensor body, the upper end of the sensor body is provided with a copper connecting column, the upper end of the sensor body is provided with a dustproof mechanism, and the lower end of the sensor body is detachably connected with a mounting mechanism;

[0007] The dustproof mechanism includes a dustproof cover, the lower end of the dustproof cover is detachably connected to the upper end of the sensor body, a sealing ring is provided on the top wall of the inner cavity of the dustproof cover, a fixed cover is provided on the upper end of the dustproof cover, a conical block is snap-fittedly connected to the inner cavity of the fixed cover, a dust plug is fixedly connected to the lower end of the conical block, a fastening plate is fixedly connected to the upper end of the dust plug, a spring is fixedly connected to the upper end of the fastening plate, bolts are threadedly connected to both ends of the dustproof cover, and a gasket is movably sleeved on the outer wall of the bolt.

[0008] Preferably, the lower end of the copper connecting column is embedded and connected to the inner wall of the upper end of the sensor body, and the lower end of the dustproof mechanism is detachably connected to the upper end of the sensor body.

[0009] Preferably, the top wall of the inner cavity of the dust cover is embedded and connected with the outer wall of the sealing ring, and the lower end of the fixed cover is fixedly connected with the upper end of the dust cover.

[0010] Preferably, the upper end of the spring is fixedly connected to the top wall of the middle part of the inner cavity of the dust cover.

[0011] Preferably, the mounting mechanism includes a mounting groove, the outer wall of the mounting groove is embedded and connected with the inner wall of the sensor body, limiting grooves are arranged on both sides of the mounting groove, the inner wall of the limiting groove is arranged with screw holes, the inner wall of the mounting groove is inserted with a connecting nut, fixing ear plates are welded on both sides of the connecting nut, and the inner wall of the fixing ear plate is threadedly connected with a limiting bolt.

[0012] Preferably, two sides of the installation groove are fixedly connected to one side of the limiting groove, and the inner wall of the limiting groove is embedded and connected to the outer wall of the screw hole.

[0013] Preferably, the outer surface thread of the limit bolt is matched with the inner wall of the screw hole.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The dust-proof mechanism can effectively prevent dust and impurities from entering the sensor, ensure the normal operation of the sensor, and prevent dust and water vapor in the air from entering the insert, thereby preventing the internal thread of the insert from being rusted. It can be disassembled and used immediately, which is convenient to use and saves space;

[0016] 2. The installation mechanism can make the equipment easy to install and disassemble the connecting nuts, which improves the convenience of installation and maintenance. It is easy to install the required connecting nuts and disassemble the old connecting nuts, reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the dustproof mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation mechanism of the utility model;

[0020] Figure 4 It is a schematic side view of the three-dimensional structure of the utility model.

[0021] In the figure: 1. sensor body; 2. copper connecting column; 3. dustproof mechanism; 4. mounting mechanism; 31. dustproof cover; 32. sealing ring; 33. fixing cover; 34. conical block; 35. dustproof plug; 36. fastening plate; 37. spring; 38. bolt; 39. washer; 41. mounting groove; 42. limiting groove; 43. screw hole; 44. connecting nut; 45. fixing ear plate; 46. limiting bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 and Figure 4 The utility model provides a technical solution: a voltage sensor, including a sensor body 1, a copper connecting column 2 is arranged at the upper end of the sensor body 1, a dustproof mechanism 3 is arranged at the upper end of the sensor body 1, a mounting mechanism 4 is detachably connected to the lower end of the sensor body 1, the dustproof mechanism 3 includes a dustproof cover 31, the lower end of the dustproof cover 31 is detachably connected to the upper end of the sensor body 1, a sealing ring 32 is arranged on the top wall of the inner cavity of the dustproof cover 31, and a fixing cover 33 is arranged at the upper end of the dustproof cover 31, The inner cavity of the fixed cover 33 is connected with a conical block 34, the lower end of the conical block 34 is fixedly connected with a dust plug 35, the upper end of the dust plug 35 is fixedly connected with a fastening plate 36, the upper end of the fastening plate 36 is fixedly connected with a spring 37, both ends of the dust cover 31 are threadedly connected with bolts 38, the outer wall of the bolt 38 is movably sleeved with a washer 39, the lower end of the copper connecting column 2 is embedded and connected with the upper inner wall of the sensor body 1, and the lower end of the dustproof mechanism 3 is detachably connected with the upper end of the sensor body 1;

[0024] The voltage sensor can be widely used in power systems, industrial automation control, automotive electronics and other fields. Its high precision and stability can meet the voltage measurement needs in various complex environments. In addition, the voltage sensor also has the characteristics of simple structure, low cost and easy mass production. In order to further ensure that the copper connecting column 2 of the sensor body 1 is effectively protected, the conical block 34 on the dust plug 35 is engaged with the inner cavity of the fixed cover 33, the lower end of the fastening plate 36 is fixedly connected to the upper end of the dust plug 35, and the upper end of the fastening plate 36 is connected to the fixed cover 33 through a spring 37. 3 is connected to the top wall of the middle part of the inner cavity of the sensor body 1, so that the entire dustproof mechanism 3 can maintain a certain elasticity and adaptability when in use, thereby ensuring the sealing effect. In addition, both ends of the dust cover 31 are threadedly connected with bolts 38, and the outer wall of the bolt 38 is movably sleeved with a gasket 39, which can further enhance the connection strength between the dust cover 31 and the sensor body 1 to prevent loosening due to vibration or external force. In actual application, the staff can remove and install the dust cover 31 by tightening or loosening the bolts 38, so as to facilitate the use or protection of the sensor body 1.

[0025] See also Figure 2 In order to quickly protect the copper connecting column 2 on the sensor body 1 from dust, the inner cavity top wall of the dust cover 31 is embedded and connected with the outer wall of the sealing ring 32, the lower end of the fixed cover 33 is fixedly connected with the upper end of the dust cover 31, and the upper end of the spring 37 is fixedly connected with the inner cavity middle top wall of the dust cover 31;

[0026] The setting of the dustproof mechanism 3 not only ensures the sealing performance of the copper connecting column 2 on the sensor body 1, but also takes into account the convenience of operation, so that the voltage sensor can maintain stable and reliable performance in various harsh environments. After the dust cover 31 is installed, the fixed cover 33 is installed on the conical block 34, so that the conical block 34 is engaged with the fixed cover 33, so that the dust cover 31 is fixed between the dust plug 35 and the fixed cover 33, and the middle part of the inner top wall of the fixed cover 33 is fixedly connected with a spring 37, and the spring 37 faces the dust cover 31. One end of the cover 33 is connected to a fastening plate 36. After the fixing cover 33 is fixed on the conical block 34, the spring 37 is squeezed and a tensioning force is applied to the fixing cover 33, so that the fixing cover 33 presses against the conical block 34 to prevent the fixing cover 33 from loosening and increase the connection stability of the dust cover 31. The fastening plate 36 can increase the contact area between the spring 37 and the dust cover 31, thereby ensuring that the tensioning force of the spring 37 can always act on the middle part of the fixing cover 33 to ensure the fastening effect. Finally, tighten the bolt 38 to complete the installation.

[0027] See also Figure 3In order to quickly fix the connecting nut 44 on the sensor body 1, the mounting mechanism 4 includes a mounting groove 41, the outer wall of the mounting groove 41 is embedded and connected with the inner wall of the sensor body 1, limiting grooves 42 are arranged on both sides of the mounting groove 41, the inner wall of the limiting groove 42 is arranged with a screw hole 43, the inner wall of the mounting groove 41 is plugged with a connecting nut 44, and fixing ear plates 45 are welded on both sides of the connecting nut 44. The inner wall of the fixing ear plate 45 is threadedly connected with a limiting bolt 46, the two sides of the mounting groove 41 are fixedly connected with one side of the limiting groove 42, the inner wall of the limiting groove 42 is embedded and connected with the outer wall of the screw hole 43, and the outer surface thread of the limiting bolt 46 is adapted to the inner wall of the screw hole 43;

[0028] In order to ensure that the connecting nut 44 can be stably fixed on the sensor body 1 during the installation process, the outer surface of the limit bolt 46 is adapted to the inner wall of the screw hole 43, and the inner wall of the limit groove 42 is in close contact with the outer wall of the fixing ear plate 45. During the installation process, the connecting nut 44 is first inserted into the installation groove 41, and then the limit bolt 46 extending from the hole of the fixing ear plate 45 is inserted into the screw hole 43 through the limit groove 42. The thread of the limit bolt 46 is adapted to the inner wall of the screw hole 43, so as to achieve the fixation of the fixing ear plate 45 and the connecting nut 44. In addition, Through the tightening action of the limit bolt 46, the connection between the connecting nut 44 and the sensor body 1 is more firm and reliable. The setting of the mounting mechanism 4 not only ensures the quick installation of the connecting nut 44, but also ensures its stability and reliability during use, which is convenient for quick disassembly, maintenance or installation of the connecting nut 44. The copper connecting column 2 replaces the connecting column originally made of iron block, eliminating the electroplating process when manufacturing iron block, reducing the production process, reducing the production difficulty, facilitating the production of voltage sensor, and also reducing the production cost of the product.

[0029] Working principle: First, the voltage sensor can be widely used in power systems, industrial automation control, automotive electronics and other fields. Its high precision and stability can meet the voltage measurement needs in various complex environments. In addition, the voltage sensor also has the characteristics of simple structure, low cost and easy large-scale production. In order to further ensure that the copper connecting column 2 of the sensor body 1 is effectively protected, the conical block 34 on the dust plug 35 is engaged with the inner cavity of the fixed cover 33, and the lower end of the fastening plate 36 is fixedly connected to the upper end of the dust plug 35. The upper end of the fastening plate 36 is connected to the middle top wall of the inner cavity of the fixed cover 33 through a spring 37, so that the entire dustproof mechanism 3 can maintain a certain elasticity and adaptability when in use, thereby ensuring the sealing effect. In addition, both ends of the dust cover 31 are threadedly connected with bolts 38, and the outer wall of the bolt 38 is movably sleeved with a gasket 39, which can further enhance the connection strength between the dust cover 31 and the sensor body 1 to prevent loosening due to vibration or external force. In actual application, the staff can remove and install the dust cover 31 by tightening or loosening the bolt 38. , so that the sensor body 1 can be used or protected conveniently. The setting of the dustproof mechanism 3 not only ensures the sealing performance of the copper connecting column 2 on the sensor body 1, but also takes into account the convenience of operation, so that the voltage sensor can maintain stable and reliable performance in various harsh environments. After the dust cover 31 is installed, the fixed cover 33 is installed on the conical block 34, so that the conical block 34 is engaged with the fixed cover 33, so that the dust cover 31 is fixed between the dust plug 35 and the fixed cover 33, and the middle part of the inner top wall of the fixed cover 33 is fixedly connected with a spring 37. The end of the spring 37 facing the dust cover 31 is connected with a fastening plate 36. After the fixed cover 33 is fixed on the conical block 34, the spring 37 is squeezed and gives a tensioning force to the fixed cover 33, so that the fixed cover 33 presses against the conical block 34 to prevent the fixed cover 33 from loosening and increase the connection stability of the dust cover 31. The fastening plate 36 can increase the contact area between the spring 37 and the dust cover 31, so as to ensure that the tensioning force of the spring 37 can always act on the middle part of the fixed cover 33 to ensure the fastening effect. Finally, tighten the bolt 38 to complete the installation.

[0030] Then, in order to ensure that the connecting nut 44 can be stably fixed on the sensor body 1 during the installation process, the outer surface of the limiting bolt 46 is adapted to the inner wall of the screw hole 43, and the inner wall of the limiting groove 42 is in close contact with the outer wall of the fixing ear plate 45. During the installation process, the connecting nut 44 is first inserted into the installation groove 41, and then the limiting bolt 46 extending from the hole of the fixing ear plate 45 is inserted into the screw hole 43 through the limiting groove 42, and the thread of the limiting bolt 46 is adapted to the inner wall of the screw hole 43, so as to achieve the fixation of the fixing ear plate 45 and the connecting nut 44. In addition, the fastening effect of the limiting bolt 46 makes the connecting nut 44 The connection with the sensor body 1 is more firm and reliable. The setting of the mounting mechanism 4 not only ensures the quick installation of the connecting nut 44, but also ensures its stability and reliability during use, which is convenient for quick disassembly, maintenance or installation of the connecting nut 44. The copper connecting column 2 replaces the connecting column originally made of iron block, eliminating the electroplating process when manufacturing iron block, reducing the production process, reducing the production difficulty, facilitating the production of voltage sensor, and also reducing the production cost of the product. The above is the working process of the whole device, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A voltage sensor, comprising a sensor body (1), characterized in that: A copper connection column (2) is provided at the upper end of the sensor body (1), a dustproof mechanism (3) is provided at the upper end of the sensor body (1), and a mounting mechanism (4) is detachably connected to the lower end of the sensor body (1); The dustproof mechanism (3) comprises a dustproof cover (31), the lower end of the dustproof cover (31) is detachably connected to the upper end of the sensor body (1), the inner cavity top wall of the dustproof cover (31) is provided with a sealing ring (32), the upper end of the dustproof cover (31) is provided with a fixing cover (33), the inner cavity of the fixing cover (33) is snap-fitted with a conical clamping block (34), the lower end of the conical clamping block (34) is fixedly connected with a dustproof plug (35), the upper end of the dustproof plug (35) is fixedly connected with a fastening plate (36), the upper end of the fastening plate (36) is fixedly connected with a spring (37), both ends of the dustproof cover (31) are threadedly connected with bolts (38), and the outer wall of the bolt (38) is movably sleeved with a washer (39).

2. A voltage sensor according to claim 1, characterized in that: The lower end of the copper connection column (2) is embedded and connected to the inner wall of the upper end of the sensor body (1), and the lower end of the dustproof mechanism (3) is detachably connected to the upper end of the sensor body (1).

3. A voltage sensor according to claim 1, characterized in that: The inner cavity top wall of the dust cover (31) is embedded and connected with the outer wall of the sealing ring (32), and the lower end of the fixed cover (33) is fixedly connected with the upper end of the dust cover (31).

4. A voltage sensor according to claim 3, characterized in that: The upper end of the spring (37) is fixedly connected to the top wall in the middle of the inner cavity of the dust cover (31).

5. A voltage sensor according to claim 1, characterized in that: The mounting mechanism (4) comprises a mounting groove (41), the outer wall of the mounting groove (41) is embedded and connected with the inner wall of the sensor body (1), limiting grooves (42) are arranged on both sides of the mounting groove (41), the inner wall of the limiting groove (42) is arranged with a screw hole (43), a connecting nut (44) is inserted into the inner wall of the mounting groove (41), fixing ear plates (45) are welded on both sides of the connecting nut (44), and the inner wall of the fixing ear plate (45) is threadedly connected to the limiting bolt (46).

6. A voltage sensor according to claim 5, characterized in that: Both sides of the installation groove (41) are fixedly connected to one side of the limiting groove (42), and the inner wall of the limiting groove (42) is embedded and connected to the outer wall of the screw hole (43).

7. A voltage sensor according to claim 5, characterized in that: The outer surface thread of the limiting bolt (46) is matched with the inner wall of the screw hole (43).

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