High-capacity magnetic induction sensor

Abstract

A high-capacity magnetic induction sensor relates to the technical field of electrical equipment signal generation and is used for solving the problem that a conventional magnetic induction sensor is easy to fail and is easy to be interfered by strong magnetism. Comprising a sensor shell, an opening reed pipe, a closing reed pipe, an opening magnet and a closing magnet, the opening reed pipe and the closing reed pipe are located inside the sensor shell, the opening magnet and the closing magnet are located outside the sensor shell, and the opening magnet and the closing magnet are both fixedly connected with a supporting insulator of the disconnecting switch. According to the utility model, the large-capacity reed switch is used for switching on and switching off, a power supply and signal conversion are not needed, and compared with a common mechanical switch, the structure is simple, the size is small, the speed is high, and the service life is long; compared with an electronic switch, the switch has the characteristics of strong load impact resistance and high working reliability; the problem that a conventional magnetic induction sensor needs an external power supply and an amplification circuit is solved, the signal transmission process is simplified, the structure is simple, and the performance is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment signal generation, and particularly to a large-capacity magnetic induction sensor. Background Technique

[0002] In recent years, the upgrading and transformation work of the one-key sequence control (programmed operation) of disconnectors has been carried out. In addition to the position signals in the electric mechanism, another position signal from a different source is required to perform a secondary confirmation on the opening and closing states of the disconnectors in the substation. When the disconnector operates, the sensor will confirm the opening and closing states of the disconnector again, and at the same time, the data will be transmitted to the background in a timely manner, enhancing the safety of the maintenance and construction operations of the substation. Currently, the mainstream solution is to install microswitches and magnetic induction sensors to achieve this.

[0003] The microswitch has physical contact, is greatly affected by the outdoor environment, has a small stroke, requires high installation accuracy, and is prone to damage the travel switch if installed improperly (over-tightened). The existing magnetic sensors have a small capacity and need to install a power supply and a signal conversion device, and the reliability of the link is relatively low. Content of the Utility Model

[0004] The purpose of the utility model is to provide a large-capacity magnetic induction sensor that has no physical contact, does not require a power supply, does not require signal conversion, and directly provides hard contacts, so as to solve the problems that conventional magnetic induction sensors are prone to failure, vulnerable to strong magnetic interference, and require independent power supply.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a large-capacity magnetic induction sensor, including a sensor housing, a tripping reed switch, a closing reed switch, a tripping magnet, and a closing magnet. The tripping reed switch and the closing reed switch are located inside the sensor housing, and the tripping magnet and the closing magnet are located outside the sensor housing, and both the tripping magnet and the closing magnet are fixedly connected to the post insulator of the disconnector.

[0006] Further, the tripping reed switch and the closing reed switch are potted inside the sensor housing with hot melt adhesive.

[0007] Further, the bottom of the sensor housing has a sensor mounting plate, and the sensor mounting plate is used to fixedly connect to the base of the disconnector.

[0008] Further, the tripping magnet is fixedly connected to the flange at the bottom of the post insulator through a tripping position mounting plate, and the closing magnet is fixedly connected to the flange at the bottom of the post insulator through a closing position mounting plate.

[0009] Furthermore, the opening position mounting plate and the closing position mounting plate both have long slots, locking screws are slidably installed in the long slots, magnet fixing sleeves are fixed on the locking screws, and the opening magnet and closing magnet are fixed in the corresponding magnet fixing sleeves.

[0010] Furthermore, it also includes an aviation plug connector, which is located on the side of the sensor housing and is connected to a continuity tester. The continuity tester uses sound and light signals to display the continuity of the opening reed switch and the closing reed switch.

[0011] Furthermore, a sealing gasket is provided between the aviation plug connector and the sensor housing.

[0012] Furthermore, there is a fixing component between the sensor mounting plate and the isolating switch base, and the fixing component includes an upper clamping plate, a lower clamping plate and a fixing bolt. The upper clamping plate and the lower clamping plate are arranged up and down and clamp the isolating switch base in the middle. The fixing bolt passes through the upper clamping plate and the lower clamping plate and fixes the upper clamping plate and the lower clamping plate together.

[0013] Furthermore, the upper end of the open position mounting plate and the upper end of the closed position mounting plate are both fixedly connected to the flange through a bolt assembly.

[0014] Furthermore, the side wall of the sensor housing has an opening position and a closing position, the opening position is opposite to the opening reed switch, and the closing position is opposite to the closing reed switch.

[0015] The beneficial effects of the utility model are as follows: the utility model uses a large-capacity reed switch for switching, does not require power supply, and does not require signal conversion. Compared with general mechanical switches, the utility model has a simple structure, small size, high speed, and long service life; compared with electronic switches, it has the characteristics of strong load impact resistance and high working reliability; it solves the problem that conventional magnetic induction sensors require external power supply and amplification circuit, simplifies the signal transmission process, and its structure is simple, and the performance is more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the present utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 This is one of the partial three-dimensional diagrams of the utility model applied to the switch body;

[0019] Figure 4 This is the second partial three-dimensional diagram of the application of the utility model on the switch body;

[0020] Figure 5 This is the main view of the utility model applied to the switch body;

[0021] In the figure: 1 sensor housing, 2 sensor mounting plate, 3 aviation plug connector, 4 gasket, 5 opening reed switch, 6 opening position, 7 closing reed switch, 8 closing position, 9 closing position mounting plate, 91 long slot, 10 closing magnet, 11 opening position mounting plate, 12 opening magnet, 13 flange, 14 bolt assembly, 15 base, 16 magnet fixing sleeve, 17 locking screw, 18 upper clamping plate, 19 lower clamping plate, 20 fixing bolt, 21 post insulator. Specific embodiments

[0022] As Figures 1 to 5 shown, the utility model includes a sensor housing 1, an opening reed switch 5, a closing reed switch 7, an opening magnet 12 and a closing magnet 10. The following describes the utility model in detail with reference to the accompanying drawings.

[0023] As Figures 1 to 4 shown, a large-capacity magnetic induction sensor includes a sensor housing 1, an opening reed switch 5, a closing reed switch 7, an opening magnet 12 and a closing magnet 10. The opening reed switch 5 and the closing reed switch 7 are located inside the sensor housing 1, and the opening magnet 12 and the closing magnet 10 are located outside the sensor housing 1, and both the opening magnet 12 and the closing magnet 10 are fixedly connected to the post insulator 21 of the disconnector. Specifically, the sensor housing 1 is made of aluminum alloy, having good strength and corrosion resistance. The opening reed switch 5 and the closing reed switch 7 are potted inside the sensor housing 1 with hot melt adhesive. As Figure 2 shown, the opening reed switch 5 and the closing reed switch 7 are arranged in parallel. The bottom of the sensor housing 1 has a sensor mounting plate 2. As Figure 3 shown, the sensor mounting plate 2 is used for fixedly connecting with the base 15 of the disconnector.

[0024] For the convenience of testing, the present invention is also provided with an aviation plug connector 3. The aviation plug connector 3 is located on the side of the sensor housing 1 and the aviation plug connector 3 is connected to the on-off tester. The on-off tester displays the on-off states of the opening reed switch 5 and the closing reed switch 7 with sound and light signals. For example, when the opening reed switch 5 is in the off state and the closing reed switch 7 is in the on state, the on-off tester displays in red light; when the opening reed switch 5 is in the on state and the closing reed switch 7 is in the off state, the on-off tester displays in green light. There is a gasket 4 between the aviation plug connector 3 and the sensor housing 1 to ensure good sealing performance, ensure the waterproof performance, and the protection level reaches IP67.

[0025] For the convenience of assembly, as Figures 3 to 5As shown in the figure, the opening magnet 12 is fixedly connected to the flange 13 at the bottom of the post insulator 21 through the opening position mounting plate 11, and the closing magnet 10 is fixedly connected to the flange 13 at the bottom of the post insulator 21 through the closing position mounting plate 9. Both the closing position mounting plate 9 and the opening position mounting plate 11 are sheet metal parts, and the upper ends of the closing position mounting plate 9 and the opening position mounting plate 11 are in a horizontal state so as to be fixedly connected to the flange 13 at the bottom of the post insulator 21 through the bolt assembly 14. Both the opening position mounting plate 11 and the closing position mounting plate 9 are provided with long slots 91. A locking screw 17 is slidably mounted in the long slot 91, and a magnet fixing sleeve 16 is fixed on the locking screw 17. The opening magnet 12 and the closing magnet 10 are fixed in the corresponding magnet fixing sleeves 16. The magnet fixing sleeve 16 has a cylindrical structure, and both the opening magnet 12 and the closing magnet 10 are located inside the magnet fixing sleeve 16 and fixedly connected to the magnet fixing sleeve 16. There are two magnet fixing sleeves 16, which are respectively used to mount and fix the opening magnet 12 and the closing magnet 10. The locking screw 17 is arranged on the magnet fixing sleeve 16. Sliding the locking screw 17 along the long slot 91 can adjust the position of the magnet fixing sleeve 16, and rotating the locking screw 17 can fix the position of the magnet fixing sleeve 16.

[0026] For the convenience of the assembly of the present invention, there is a fixing component between the sensor mounting plate 2 and the disconnector base 15, such as Figure 3 As shown in the figure, the fixing component includes an upper clamping plate 18, a lower clamping plate 19 and fixing bolts 20. The upper clamping plate 18 and the lower clamping plate 19 are arranged up and down and clamp the disconnector base 15 in the middle. There are four fixing bolts 20, and the fixing bolts 20 penetrate through the upper clamping plate 18 and the lower clamping plate 19 and fixedly connect the upper clamping plate 18 and the lower clamping plate 19 together. The sensor mounting plate 2 is fixedly connected to the upper clamping plate 18, and the two are fixedly connected by screws.

[0027] For the convenience of adjusting and positioning the positions of the opening magnet 12 and the closing magnet 10, the side wall of the sensor housing 1 has an opening position 6 and a closing position 8. The opening position 6 is opposite to the opening reed switch 5, and the closing position 8 is opposite to the closing reed switch 7. The settings of the opening position 6 and the closing position 8 can clearly and intuitively determine the positions of the opening reed switch 5 and the closing reed switch 7. Furthermore, according to the positions of the opening position 6 and the closing position 8, the positions of the opening magnet 12 and the closing magnet 10 can be adjusted, so as to quickly and accurately align the opening magnet 12 with the opening position 6 and align the closing magnet 10 with the closing position 8.

[0028] This utility model is switched on and off through large-capacity reed switches (opening reed switch 5 and closing reed switch 7), without the need for a power supply or signal conversion. Compared with general mechanical switches, it has a simple structure, small size, high speed, and long working life. Compared with electronic switches, it has the characteristics of strong anti-load impact ability and high working reliability. It solves the problem that conventional magnetic induction sensors need an external power supply and an amplifier circuit, simplifies the signal transmission process, has a simple structure, and is more stable and reliable in performance. By adjusting the positions of the opening magnet 12 and the closing magnet 10 on the corresponding mounting plates (closing position mounting plate 9 and opening position mounting plate 11), the induction position can be accurately adjusted. The closing position mounting plate 9 and the opening position mounting plate 11 have a simple structure and can be flexibly designed according to actual needs, greatly improving the adaptability of this utility model. The setting of the aviation plug connector 3 facilitates the connection between the sensor of this utility model and the on-off tester, and thus facilitates on-site debugging. The on-off tester visually displays the on-off state with sound and light signals, which is intuitive and eye-catching, and simplifies the test process compared with using a multimeter for measurement. The settings of the closing position 8 and the opening position 6 provide an intuitive positioning basis for the position adjustment of the opening magnet 12 and the closing magnet 10. The opening magnet 12 and the closing magnet 10 are installed in the magnet fixing sleeve 16, which plays a protective role for the opening magnet 12 and the closing magnet 10.

Claims

1. A large-capacity magnetic induction sensor, characterized in that, It includes a sensor housing, an opening reed switch, a closing reed switch, an opening magnet and a closing magnet. The opening reed switch and the closing reed switch are located inside the sensor housing, and the opening magnet and the closing magnet are located outside the sensor housing. The opening magnet and the closing magnet are both fixedly connected to the support insulator of the disconnector.

2. The large-capacity magnetic induction sensor according to claim 1, wherein The opening reed switch and the closing reed switch are sealed inside the sensor housing by using hot melt adhesive.

3. A large-capacity magnetic induction sensor according to claim 1, characterized in that, The bottom of the sensor housing is provided with a sensor mounting plate, and the sensor mounting plate is used for fixed connection with the base of the isolating switch.

4. A large-capacity magnetic induction sensor according to claim 1, characterized in that The opening magnet is fixedly connected to the flange at the bottom of the support insulator through the opening position mounting plate, and the closing magnet is fixedly connected to the flange at the bottom of the support insulator through the closing position mounting plate.

5. A large-capacity magnetic induction sensor according to claim 4, characterized in that, The opening position mounting plate and the closing position mounting plate both have long slots, locking screws are slidably installed in the long slots, magnet fixing sleeves are fixed on the locking screws, and the opening magnet and closing magnet are fixed in the corresponding magnet fixing sleeves.

6. A large-capacity magnetic induction sensor according to claim 1, characterized in that It also includes an aviation plug connector, which is located on the side of the sensor housing and is connected to a continuity tester. The continuity tester uses sound and light signals to display the continuity of the opening reed switch and the closing reed switch.

7. A large-capacity magnetic induction sensor according to claim 6, characterized in that, A sealing gasket is provided between the aviation plug connector and the sensor housing.

8. The large-capacity magnetic induction sensor according to claim 3, wherein There is a fixing component between the sensor mounting plate and the isolating switch base, and the fixing component includes an upper clamping plate, a lower clamping plate and a fixing bolt. The upper clamping plate and the lower clamping plate are arranged up and down and clamp the isolating switch base in the middle. The fixing bolt passes through the upper clamping plate and the lower clamping plate and fixes the upper clamping plate and the lower clamping plate together.

9. A large-capacity magnetic induction sensor according to claim 4, characterized in that The upper end of the opening position mounting plate and the upper end of the closing position mounting plate are both fixedly connected to the flange through a bolt assembly.

10. A large-capacity magnetic induction sensor according to claim 1, characterized in that, The side wall of the sensor housing has an opening position and a closing position, wherein the opening position is opposite to the opening reed switch, and the closing position is opposite to the closing reed switch.

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