Basin-type insulator

Abstract

The utility model provides a basin-type insulator. The basin-type insulator comprises an insulator body; the conductor is arranged on the insulator body; the current sensing assembly comprises an energy collection structure, a cantilever, a piezoelectric structure and a giant magnetoresistance chip module, and the energy collection structure is arranged on the insulator body; the first end of the cantilever is connected with the energy collection structure, the second end of the cantilever is connected with the piezoelectric structure, and when the energy collection structure senses that current flows through the conductor, the energy collection structure drives the piezoelectric structure to generate a piezoelectric effect through the cantilever and loads voltage generated by the piezoelectric effect to the giant magnetoresistance chip module. According to the utility model, the problem that the appearance size and the detection precision of the basin-type insulator in the prior art cannot meet the use requirements of users is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pot type insulators, and particularly to a pot type insulator. Background Art

[0002] At present, domestic and foreign users have higher and higher requirements for the external dimensions of GIS equipment. How to reduce the external dimensions of GIS equipment has become an urgent task for GIS equipment manufacturers.

[0003] In the prior art, a Rogowski coil and a pot type insulator are integrally designed in a composite manner to reduce the external dimensions of GIS equipment. However, due to the complex sensor structure and low precision of the Rogowski coil, it not only increases the processing and assembly difficulty of workers, but also has poor versatility and cannot meet the use requirements of users. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a pot type insulator to solve the problem that the external dimensions and detection accuracy of the pot type insulator in the prior art cannot meet the use requirements of users.

[0005] To achieve the above purpose, the utility model provides a pot type insulator, including: an insulator body; a conductor disposed on the insulator body; a current sensing assembly, the current sensing assembly including an energy harvesting structure, a cantilever, a piezoelectric structure and a giant magnetoresistive chip module, the energy harvesting structure being disposed on the insulator body; wherein, the first end of the cantilever is connected to the energy harvesting structure, the second end of the cantilever is connected to the piezoelectric structure, when the energy harvesting structure senses the current flowing through the conductor, the energy harvesting structure drives the piezoelectric structure to generate a piezoelectric effect through the cantilever, and loads the voltage generated by the piezoelectric effect onto the giant magnetoresistive chip module.

[0006] Further, the energy harvesting structure is annular and has an opening; and / or, the energy harvesting structure is made of aluminum or copper.

[0007] Further, the insulator body has a first mounting hole and a second mounting hole, the second mounting hole is arranged around the first mounting hole, the conductor is disposed in the first mounting hole, and the energy harvesting structure is disposed in the second mounting hole; the central axis of the first mounting hole is coaxially arranged with the central axis of the insulator body; and / or, the central axis of the second mounting hole is coaxially arranged with the central axis of the insulator body; and / or, the second mounting hole is an annular hole or includes a plurality of arc-shaped holes.

[0008] Further, the insulator body further has a through hole communicating with the second mounting hole, and at least a part of the cantilever extends into the through hole.

[0009] Further, the through hole extends along the radial direction of the insulator body.

[0010] Further, the current sensing component further includes a substrate, and the piezoelectric structure is disposed on the substrate. The piezoelectric structure is disposed on the first surface of the substrate. The pot-type insulator further includes: a silicon base layer disposed on the second surface of the substrate; the first surface and the second surface are disposed opposite to each other.

[0011] Further, there is one current sensing component; or, there are multiple current sensing components, and the multiple current sensing components are spaced apart along the central axis of the insulator body.

[0012] Further, the pot-type insulator further includes: a protective cover, which is sleeved outside the current sensing component and connected to the insulator body.

[0013] Further, the cantilever is integrally cast with the insulator body.

[0014] Further, the cantilever is made of a semiconductor material.

[0015] Applying the technical solution of the present invention, the pot-type insulator includes an insulator body, a conductor, and a current sensing component. The conductor is disposed on the insulator body. The current sensing component includes an energy harvesting structure, a cantilever, a piezoelectric structure, and a giant magnetoresistive chip module. The energy harvesting structure is disposed on the insulator body. Specifically, the first end of the cantilever is connected to the energy harvesting structure, and the second end of the cantilever is connected to the piezoelectric structure. When the energy harvesting structure senses the current flowing through the conductor, the energy harvesting structure drives the second end of the cantilever to move, so that the voltage generated by the piezoelectric effect is loaded onto the giant magnetoresistive chip module. Then, the change relationship between the voltage and the current can be obtained through the giant magnetoresistive chip module, thereby realizing the measurement of the above current by the giant magnetoresistive chip module. On the one hand, since at least part of the current sensing component is embedded in the insulator body, the overall external dimension of the GIS device is reduced; on the other hand, based on the linear relationship between the voltage and the magnetic induction intensity of the giant magnetoresistive chip module, DC and AC signals are measured, and the linearity is good, thereby solving the problem that the external dimension and detection accuracy of the pot-type insulator in the prior art cannot meet the user's usage requirements. In this way, by using the piezoelectric effect and the giant magnetoresistive effect, the current transducer and the pot-type insulator are integrally designed, and the current sensor is embedded in the pot-type insulator, effectively reducing the external dimension of the GIS and reducing the cost at the same time. Description of the Drawings

[0016] The specification drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 The front view of the embodiment of the pot-type insulator according to the present invention is shown;

[0018] Figure 2 shows Figure 1 a cross-sectional view of the pot insulator in

[0019] Figure 3 shows Figure 1 the bridge structure diagram of the giant magnetoresistive chip module of the pot insulator in

[0020] Among them, the above-mentioned drawings include the following reference numerals:

[0021] 10. Insulator body; 11. First mounting hole; 12. Second mounting hole;

[0022] 20. Conductor;

[0023] 30. Current sensing component; 31. Energy harvesting structure; 32. Cantilever; 33. Piezoelectric structure; 34. Giant magnetoresistive chip module; 35. Substrate;

[0024] 40. Silicon base layer;

[0025] 50. Protective cover. Detailed implementation manners

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present invention in detail with reference to the drawings and in combination with the embodiments.

[0027] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0028] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left, right" are usually left and right as shown in the drawings; "inside, outside" refer to the inside and outside of the contour of each component itself, but the above orientation terms do not limit the present invention.

[0029] In order to solve the problem that the external dimensions and detection accuracy of the pot insulator in the prior art cannot meet the user's usage requirements, the present application provides a pot insulator.

[0030] As Figure 1 and Figure 2As shown, the pot-type insulator includes an insulator body 10, a conductor 20, and a current sensing component 30. Among them, the conductor 20 is disposed on the insulator body 10. The current sensing component 30 includes an energy harvesting structure 31, a cantilever 32, a piezoelectric structure 33, and a giant magnetoresistance chip module 34. The energy harvesting structure 31 is disposed on the insulator body 10. The first end of the cantilever 32 is connected to the energy harvesting structure 31, and the second end of the cantilever 32 is connected to the piezoelectric structure 33. When the energy harvesting structure 31 senses the current flowing through the conductor 20, the energy harvesting structure 31 drives the piezoelectric structure 33 to generate a piezoelectric effect through the cantilever 32, and loads the voltage generated by the piezoelectric effect onto the giant magnetoresistance chip module 34.

[0031] Applying the technical solution of this embodiment, the first end of the cantilever 32 is connected to the energy harvesting structure 31, and the second end of the cantilever 32 is connected to the piezoelectric structure 33. When the energy harvesting structure 31 senses the current flowing through the conductor 20, the energy harvesting structure 31 drives the second end of the cantilever 32 to move, so that a piezoelectric effect is generated on the piezoelectric structure 33 and the voltage generated by it is loaded onto the giant magnetoresistance chip module 34. Then, the change relationship between the voltage and the current can be obtained through the giant magnetoresistance chip module 34, thereby realizing the measurement of the above current by the giant magnetoresistance chip module 34. On the one hand, since at least part of the current sensing component is embedded in the insulator body 10, the overall external dimension of the GIS device is reduced; on the other hand, based on the linear relationship between the voltage and the magnetic induction intensity of the giant magnetoresistance chip module 34, DC and AC signals are measured, and the linearity is good, thereby solving the problem that the external dimension and detection accuracy of the pot-type insulator in the prior art cannot meet the user's usage requirements. In this way, by using the piezoelectric effect and the giant magnetoresistance effect, the current transformer and the pot-type insulator are integrally designed, and the current sensor is embedded in the pot-type insulator, effectively reducing the external dimension of the GIS and reducing the cost at the same time.

[0032] Optionally, the energy harvesting structure 31 is annular and has an opening; and / or, the energy harvesting structure 31 is made of aluminum or copper. In this way, the above settings make the structure of the energy harvesting structure 31 simpler, easier to process and implement, and reduce the processing cost and processing difficulty of the energy harvesting structure 31. At the same time, the above settings ensure that the energy harvesting structure 31 is a conductor. When an electric field is generated on the conductor 20, the energy harvesting structure 31 senses the above electric field and generates a magnetic field, so that the second end of the cantilever 32 deforms, a piezoelectric effect is generated on the piezoelectric structure 33, and the voltage generated by it is loaded onto the giant magnetoresistance chip module 34, thereby realizing the current detection function of the current sensing component 30.

[0033] In this embodiment, the energy harvesting structure 31 is annular and has an opening, and the energy harvesting structure 31 is made of aluminum.

[0034] In other embodiments not shown in the drawings, the quantity collection structure is made of copper material.

[0035] Optionally, the insulator body 10 has a first mounting hole 11 and a second mounting hole 12. The second mounting hole 12 is arranged around the first mounting hole 11. The conductor 20 is arranged in the first mounting hole 11, and the energy collection structure 31 is arranged in the second mounting hole 12. The central axis of the first mounting hole 11 is coaxially arranged with the central axis of the insulator body 10; and / or, the central axis of the second mounting hole 12 is coaxially arranged with the central axis of the insulator body 10; and / or, the second mounting hole 12 is an annular hole or includes a plurality of arc-shaped holes. In this way, the above settings make the distribution of the electric field and magnetic field on the pot-type insulator more uniform and consistent, improving the detection accuracy of the current sensing component 30. At the same time, on the one hand, the above settings make the structure of the second mounting hole 12 simpler and easier to process, reducing the processing cost and difficulty of the second mounting hole 12; on the other hand, the shape of the second mounting hole 12 is more diverse to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff.

[0036] In this embodiment, the central axis of the first mounting hole 11 is coaxially arranged with the central axis of the second mounting hole 12. The first mounting hole 11 is a central hole, and the second mounting hole 12 is an annular hole.

[0037] In this embodiment, the insulator body 10 further has a through hole communicating with the second mounting hole 12, and at least part of the cantilever 32 extends into the through hole. In this way, on the one hand, the above settings ensure that at least part of the cantilever 32 is embedded in the insulator body 10, further realizing the miniaturized design of the GIS device; on the other hand, it ensures that the cantilever 32 can be connected to the energy collection structure 31, thereby improving the operation reliability of the current sensing component 30.

[0038] In this embodiment, the through hole extends along the radial direction of the insulator body 10. In this way, on the one hand, it is convenient for the staff to process the through hole, reducing the processing difficulty; on the other hand, since the conductor 20 is a central conductor, the electric field direction generated by the central conductor is along the radial direction of the insulator body 10. The above settings ensure that the cantilever 32 deforms under the induction of the magnetic field, and then the piezoelectric structure 33 generates a piezoelectric effect.

[0039] As Figure 1 shown, the current sensing component 30 further includes a substrate 35. The piezoelectric structure 33 is arranged on the substrate 35. The piezoelectric structure 33 is arranged on the first plate surface of the substrate 35. The pot-type insulator further includes a silicon base layer 40. Among them, the silicon base layer 40 is arranged on the second plate surface of the substrate 35; the first plate surface and the second plate surface are arranged opposite to each other. In this way, the above settings of the silicon base layer 40 ensure that the piezoelectric reaction forms a loop to realize the current detection function of the current sensing component 30.

[0040] Optionally, there is one current sensing component 30; alternatively, there are multiple current sensing components 30, and the multiple current sensing components 30 are arranged at intervals along the central axis of the insulator body 10. In this way, the above settings make the selection of the number and the arrangement method of the current sensing components 30 more flexible to meet different usage requirements and working conditions, and also improve the processing flexibility of the staff.

[0041] In this embodiment, there is one current sensing component 30, thereby reducing the processing cost and difficulty of the pot-type insulator.

[0042] Such as Figure 1 and Figure 2 As shown, the pot-type insulator further includes a protective cover 50. Among them, the protective cover 50 covers the current sensing component 30 and is connected to the insulator body 10. In this way, the protective cover 50 is used to protect and seal the current sensing component 30, and also plays a role in dust prevention, thereby extending the service life of the current sensing component 30.

[0043] In this embodiment, the cantilever 32 is integrally cast with the insulator body 10. In this way, the above settings improve the assembly stability of the cantilever 32 and the insulator body 10, and further improve the detection accuracy and detection stability of the current sensing component 30.

[0044] Optionally, the cantilever 32 is made of a semiconductor material. In this way, the above settings ensure that the cantilever 32 can deform under the action of a magnetic field, so that a piezoelectric effect is generated on the piezoelectric structure 33 and the voltage generated by it is loaded onto the giant magnetoresistive chip module 34.

[0045] Optionally, the cantilever 32 is made of silicon oxide or zinc oxide.

[0046] Such as Figure 3 As shown, the inside of the giant magnetoresistive chip module 34 is composed of R1, R2, R3, and R4 to form a bridge structure. R1 and R3 are shielded by NiFe materials and cannot sense the change of the magnetic field, while R2 and R4 are not shielded. Among them, the resistance values of R1, R2, R3, and R4 are all R.

[0047] V + =(R + △R)xVcc / (2R + △R) (Equation 1)

[0048] V - =△RxVcc / (2R + △R) (Equation 2)

[0049] V = V + -V - =△RxVcc / 2R (Equation 3)

[0050] Among them, △R and the magnetic induction intensity B change linearly, and satisfy △R = KxB.

[0051] B = μ₀xI / 2πd (Equation 4)

[0052] V = Kxμ₀xIxVcc / 4πRd (Equation 5)

[0053] In this way, the variation relationship between voltage V and I can be measured by the giant magnetoresistance chip module 34, and the measurement of current can be achieved through the setting of numerical values.

[0054] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0055] The pot-type insulator includes an insulator body, a conductor, and a current sensing component. The conductor is arranged on the insulator body. The current sensing component includes an energy harvesting structure, a cantilever, a piezoelectric structure, and a giant magnetoresistance chip module. The energy harvesting structure is arranged on the insulator body. In this way, the first end of the cantilever is connected to the energy harvesting structure, and the second end of the cantilever is connected to the piezoelectric structure. When the energy harvesting structure senses the current flowing through the conductor, the energy harvesting structure drives the second end of the cantilever to move, so that a piezoelectric effect is generated on the piezoelectric structure and the voltage generated by it is loaded onto the giant magnetoresistance chip module. Then, the variation relationship between voltage and current can be obtained through the giant magnetoresistance chip module, and thus the measurement of the above current by the giant magnetoresistance chip module is realized. On the one hand, since at least part of the current sensing component is embedded in the insulator body, the overall external dimension of the GIS device is reduced. On the other hand, based on the linear relationship between the voltage and magnetic induction intensity of the giant magnetoresistance chip module, DC and AC signals are measured, and the linearity is better. Thus, the problem that the external dimension and detection accuracy of the pot-type insulator in the prior art cannot meet the user's usage requirements is solved. In this way, by using the piezoelectric effect and the giant magnetoresistance effect, the current transformer and the pot-type insulator are integrally designed, and the current sensor is embedded in the pot-type insulator, effectively reducing the external dimension of the GIS and at the same time reducing the cost.

[0056] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0057] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0059] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pot-type insulator, characterized in that: include: Insulator body (10); A conductor (20) is arranged on the insulator body (10); A current sensing component (30), the current sensing component (30) comprising an energy collection structure (31), a cantilever (32), a piezoelectric structure (33) and a giant magnetoresistance chip module (34), the energy collection structure (31) being arranged on the insulator body (10); The first end of the cantilever (32) is connected to the energy collection structure (31), and the second end of the cantilever (32) is connected to the piezoelectric structure (33). When the energy collection structure (31) senses the current flowing through the conductor (20), the energy collection structure (31) drives the piezoelectric structure (33) to generate a piezoelectric effect through the cantilever (32), and loads the voltage generated by the piezoelectric effect onto the giant magnetoresistance chip module (34).

2. The pot-type insulator according to claim 1, characterized in that: The energy collection structure (31) is annular and has an opening; and / or the energy collection structure (31) is made of aluminum or copper.

3. The pot-type insulator according to claim 1, characterized in that: The insulator body (10) has a first mounting hole (11) and a second mounting hole (12), the second mounting hole (12) is arranged around the first mounting hole (11), the conductor (20) is arranged in the first mounting hole (11), and the energy collection structure (31) is arranged in the second mounting hole (12); the central axis of the first mounting hole (11) is coaxially arranged with the central axis of the insulator body (10); and / or the central axis of the second mounting hole (12) is coaxially arranged with the central axis of the insulator body (10); and / or the second mounting hole (12) is an annular hole or includes a plurality of arc holes.

4. The pot-type insulator according to claim 3, characterized in that: The insulator body (10) also has a through hole communicating with the second mounting hole (12), and at least a portion of the cantilever (32) extends into the through hole.

5. The pot-type insulator according to claim 4, characterized in that: The through hole extends in the radial direction of the insulator body (10).

6. The pot-type insulator according to claim 1, characterized in that: The current sensing assembly (30) further comprises a substrate (35), the piezoelectric structure (33) is arranged on the substrate (35), the piezoelectric structure (33) is arranged on a first plate surface of the substrate (35), and the pot-type insulator further comprises: The silicon-based layer (40) is arranged on the second plate surface of the substrate (35); the first plate surface and the second plate surface are arranged opposite to each other.

7. The pot-type insulator according to claim 1, characterized in that: There is one current sensing component (30); or there are multiple current sensing components (30), and the multiple current sensing components (30) are arranged at intervals along the central axis of the insulator body (10).

8. The pot-type insulator according to claim 1, characterized in that: The pot-type insulator also includes: A protective cover (50) is arranged outside the current sensing component (30) and connected to the insulator body (10).

9. The pot-type insulator according to claim 1, characterized in that: The cantilever (32) and the insulator body (10) are integrally cast.

10. The pot-type insulator according to claim 1, characterized in that: The cantilever (32) is made of semiconductor material.

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