Shell structure of partial discharge ultrasonic detection system

Abstract

According to the shell structure of the partial discharge ultrasonic detection system, in the shell structure of the partial discharge ultrasonic detection system, a shell is of an open structure; the cover plate detachably covers the top of the shell; the support is arranged in the shell, the bottom layer supports a battery, one end of the bottom layer vertically extends upwards to form a first supporting section, the middle layer horizontally extends from the first supporting section, the middle layer supports a charge amplifier connected with the battery, and one end, away from the first supporting section, of the middle layer vertically extends upwards to form a second supporting section. The upper layer horizontally extends from the top end of the second supporting section to the direction away from the middle layer, a data acquisition card is supported on the upper layer, and the rear filter is arranged on one side of the support and connected with the data acquisition card and the charge amplifier; the pre-filter support comprises a filter fixing plate and a partition plate, and at least one pre-filter is supported on the pre-filter support and connected with the charge amplifier.

Description

Technical Field

[0001] The utility model relates to the technical field of power partial discharge detection, in particular to a housing structure of a partial discharge ultrasonic detection system. Background Art

[0002] The condition monitoring and fault diagnosis of power equipment have become the key links in the industry development. As a basic method for power equipment condition monitoring, the partial discharge detection method is increasingly widely used. At the same time, with the rapid development of technologies such as the Internet of Things, big data, and artificial intelligence, the demand for online monitoring and intelligent diagnosis of power equipment is also increasing day by day.

[0003] In the operation and maintenance process of power equipment, the discovery and handling of partial discharge problems are crucial. However, the existing partial discharge detection methods have certain limitations. For example, the infrared thermal imaging method cannot provide accurate discharge position information, the optical fiber detection method is costly and not suitable for complex environments, and the high-frequency pulse current method is not suitable for online or live detection, etc. Therefore, developing an efficient, accurate, and reliable partial discharge detection method is an urgent need in the current market.

[0004] With the rapid development of the power industry and the acceleration of the urbanization process, the demand for power equipment is increasing continuously. At the same time, people's requirements for the quality and reliability of power supply are also getting higher and higher. This provides a broad market space for the power equipment partial discharge defect detection technology.

[0005] Globally, governments of all countries are increasing their investment in the power industry, promoting the upgrading and technological innovation of power equipment. At the same time, with the improvement of environmental awareness, the popularization of new power systems such as new energy and distributed energy has also accelerated the development of power equipment monitoring and fault diagnosis technologies.

[0006] Partial discharge is the main precursor of insulation faults in electrical equipment. When partial discharge occurs, physical characteristics such as pulse current, electromagnetic wave, ultrasonic wave, optical signal, gas, etc. often appear. By detecting these physical quantities and timely discovering the partial discharge defects existing inside the equipment, fault early warning can be achieved, and the safety of the equipment and the reliability of power supply can be guaranteed. The ultrasonic wave method is a non-invasive partial discharge detection method, which is portable and non-destructive. However, the ultrasonic signals generated by partial discharge inside electrical equipment are weak themselves, and the acoustic signals attenuate significantly after propagating to the equipment surface. The electromagnetic signals and noise signals exist in the environment where the electrical equipment is located, which may affect the normal operation of the electrical equipment in the detection system.

[0007] The information disclosed in the background art section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0008] In view of the deficiencies or defects existing in the prior art, a housing structure of a partial discharge ultrasonic detection system is provided to ensure the normal operation of the detection equipment and facilitate on-site testing, and is applicable to the partial discharge ultrasonic detection of electrical equipment under working conditions.

[0009] The object of the present utility model is achieved through the following technical solutions.

[0010] A housing structure of a partial discharge ultrasonic detection system includes

[0011] An outer shell, which has an open structure;

[0012] A cover plate, which is detachably covered on the top of the outer shell;

[0013] A bracket, which is arranged inside the outer shell and includes

[0014] A bottom layer, which supports a battery, and one end of the bottom layer extends vertically upward to form a first support section,

[0015] An intermediate layer, which horizontally extends from the first support section, and the intermediate layer supports a charge amplifier connected to the battery. One end of the intermediate layer away from the first support section extends vertically upward to form a second support section,

[0016] An upper layer, which horizontally extends from the top end of the second support section in a direction away from the intermediate layer, and the upper layer supports a data acquisition card,

[0017] A post-filter, which is arranged on one side of the bracket and is connected to the data acquisition card and the charge amplifier;

[0018] A pre-filter bracket, which includes a filter fixing plate and a partition board, and at least one pre-filter is supported on the pre-filter bracket and is connected to the charge amplifier.

[0019] In the housing structure of the partial discharge ultrasonic detection system, stretchable support feet are provided at the bottom of the outer shell.

[0020] In the housing structure of the partial discharge ultrasonic detection system, the outer shell is a hollow rectangular structure.

[0021] In the housing structure of the partial discharge ultrasonic detection system, a foldable handle is provided on the cover plate.

[0022] In the housing structure of the partial discharge ultrasonic detection system, the outer shell includes a gasket for sealing communication and charging interfaces and an aviation plug.

[0023] In the housing structure of the partial discharge ultrasonic detection system, the input end of the pre-filter is connected to an external sensor, and the output end of the pre-filter is connected to the input end of the charge amplifier.

[0024] In the housing structure of the partial discharge ultrasonic detection system described above, the bottom layer, the middle layer, and the upper layer are all horizontal layers.

[0025] In the housing structure of the partial discharge ultrasonic detection system described above, the first support section and the second support section are both provided with slots.

[0026] In the housing structure of the partial discharge ultrasonic detection system described above, the end of the bottom layer away from the first support section is provided with a bent edge.

[0027] In the housing structure of the partial discharge ultrasonic detection system described above, the end of the upper layer away from the second support section is provided with a vertical baffle.

[0028] Compared with the prior art, the beneficial effects brought by the present utility model are as follows:

[0029] The present utility model ensures the reliability of the sensing system, conducts product integration design for the sensing system, integrates the pre-filter, charge amplifier, post-filter, and data acquisition card into the chassis, conducts structural design for the chassis, and realizes the orderly connection of the internal structural components of the chassis. The design of the structure and material of the housing, as well as the design of the internal placement partitions of the housing, etc. The housing structure of the partial discharge ultrasonic detection system has the ability of multi-channel detection, and has good anti-electromagnetic interference ability and strong environmental adaptability.

[0030] The above description is only an overview of the technical solution of the present utility model. In order to make the technical means of the present utility model clearer and to the extent that those skilled in the art can implement it according to the content of the description, and in order to make the above and other purposes, features, and advantages of the present utility model more obvious and understandable, the following takes the specific embodiments of the present utility model as examples for illustration. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the detailed description of the preferred specific embodiments below, various other advantages and benefits of the present utility model will become clear to those of ordinary skill in the art. The drawings in the specification are only for the purpose of showing the preferred embodiments, and are not considered to be a limitation of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0032] In the drawings:

[0033] Figure 1 is the overall structural schematic diagram of the housing structure of the partial discharge ultrasonic detection system according to an embodiment of the present utility model;

[0034] Figure 2 Schematic diagram of the bracket of the housing structure of the partial discharge ultrasonic detection system according to an embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the filter fixing plate of the housing structure of the partial discharge ultrasonic detection system according to an embodiment of the present invention;

[0036] Figure 4 Schematic diagram of the partition of the housing structure of the partial discharge ultrasonic detection system according to an embodiment of the present invention;

[0037] Figure 5 Schematic diagram of the electrical connection of the housing structure of the partial discharge ultrasonic detection system according to an embodiment of the present invention.

[0038] The present invention will be further explained below in conjunction with the drawings and embodiments. Specific embodiments

[0039] Specific embodiments of the present invention will be described in more detail below with reference to the drawings. Although specific embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0040] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different terms to refer to the same component. The specification and claims do not use the difference in terms as a way to distinguish components, but use the difference in the functions of components as the criterion for distinction. As used throughout the specification and claims, the term "comprising" or "including" is an open-ended term and should be interpreted as "including but not limited to". The subsequent description in the specification is a preferred embodiment for implementing the present invention, but the description is for the purpose of the general principle of the specification and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the scope defined by the appended claims.

[0041] For the convenience of understanding the embodiments of the present invention, several specific embodiments will be further explained below in conjunction with the drawings, and each drawing does not constitute a limitation on the embodiments of the present invention.

[0042] For better understanding, as Figures 1 to 5 shown, the housing structure of a partial discharge ultrasonic detection system includes,

[0043] A housing 1, which is an open structure;

[0044] A cover plate 2 detachably covering the top of the housing 1;

[0045] A bracket disposed inside the housing 1, including

[0046] A bottom layer 3 supporting a battery, with a first support section 4 vertically extending upward at one end of the bottom layer 3,

[0047] An intermediate layer 5 horizontally extending from the first support section 4, the intermediate layer 5 supporting a charge amplifier connected to the battery, and a second support section 6 vertically extending upward at the end of the intermediate layer 5 away from the first support section 4,

[0048] An upper layer 7 horizontally extending from the top of the second support section 6 in a direction away from the intermediate layer 5, the upper layer 7 supporting a data acquisition card,

[0049] A post-filter disposed on one side of the bracket and connected to the data acquisition card and the charge amplifier;

[0050] A pre-filter bracket including a filter fixing plate 8 and a partition 9, with at least one pre-filter supported by the pre-filter bracket and connected to the charge amplifier.

[0051] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, stretchable support feet are provided at the bottom of the housing 1.

[0052] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, the housing 1 is a hollow rectangular structure.

[0053] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, a foldable handle is provided on the cover plate 2.

[0054] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, the housing 1 includes a gasket for sealing communication and charging interfaces and an aviation plug.

[0055] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, the input end of the pre-filter is connected to an external sensor, and the output end of the pre-filter is connected to the input end of the charge amplifier.

[0056] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, the bottom layer 3, the intermediate layer 5, and the upper layer 7 are all horizontal layers.

[0057] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, the first support section 4 and the second support section 6 are both provided with slots.

[0058] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, a bent edge is provided at the end of the bottom layer 3 away from the first support section 4.

[0059] In a preferred embodiment of the housing structure of the partial discharge ultrasonic detection system, a vertical baffle is provided at the end of the upper layer 7 away from the second support section 6.

[0060] In one embodiment, the overall box is 36 cm in length, 27 cm in width, and approximately 32 cm in height. The box consists of an outer shell 1 and a lid. The lid is equipped with a UWAFN120 foldable handle from misumi for lifting the box to facilitate movement. The outer shell 1 of the box is formed by welding and stamping aluminum alloy + sheet metal, divided into two parts A - B, bolt - connected, and the communication and charging interfaces are sealed with a polytetrafluoroethylene gasket and Lingke IP68 - level waterproof aviation plugs. This can not only make the box firm and earthquake - resistant but also minimize the weight of the box to increase the convenience of system use. The waterproof level of the electrical connector and the box is IP68. The partial discharge box is supplemented with integrally drawn - formed support feet for stable placement.

[0061] Figure 2 It is a bracket for the charge amplifier, data acquisition card, and battery. It is located in the left half of the box. The bracket can be divided into three layers. The upper layer 7 is used to place the data acquisition card, and the input end of the acquisition card is led out from the side of the bracket for convenient connection to the post - filter on the right. The middle layer 5 is used to place the charge amplifier. The input end of the charge amplifier is close to the pre - filter side, and the rear end of the charge amplifier is close to the post - filter side for easy connection between the charge amplifier and the filter. The bottom layer 3 of the bracket is used to place the battery. The battery uses a Bull lithium iron phosphate energy storage power supply with common output interfaces, and various types of voltage and current outputs can be freely matched to supply power to the charge amplifier. The three - layer design of the electrical component bracket can save the space inside the box to the greatest extent, and the design of the positions of the electrical components and the opening directions fully consider the connection methods between different electrical components, which can minimize the length and difficulty of the connections. The entire electrical component bracket is formed by stamping SUS304 stainless steel material, which reduces the weight of the bracket while ensuring the firmness and reliability of the electrical component bracket. Six screw holes are opened at the bottom of the bracket, and it can be tightly connected to the bottom box outer shell 1 through bolts, ensuring the firmness and reliability of the bracket inside the box.

[0062] Figure 3 It is a schematic diagram of the filter fixing plate 8 of the pre - filter bracket and Figure 4It is a schematic diagram of the partition 9. The filter bracket has a total of 8 vacant positions, and up to 8 filters can be installed simultaneously, ensuring the feasibility of multi-channel detection of the partial discharge ultrasonic detection system. The fixing plate 8 of the filter bracket is formed by stamping SUS304 stainless steel, and the partition 9 is made of phenolic resin material. The bracket is located on the left front side of the box, close to the input end of the charge amplifier, facilitating the connection between the pre-filter and the charge amplifier and minimizing the length of the BNC connection. The overall plate of the fixing plate 8 is made of phenolic resin material, which can reduce the weight of the system while meeting the support requirements. Nylon hexagon posts are provided on the fixing plate 8 to fix the filter on the partition 9, ensuring the stability of the system during use. The partition 9 has a total of 8 vacant positions, and up to 8 filters can be installed simultaneously, ensuring the feasibility of multi-channel detection of the partial discharge ultrasonic detection system. The bracket is located on the right front side of the box, close to the output end of the charge amplifier, facilitating the connection between the pre-filter and the charge amplifier.

[0063] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purposes of illustration and facilitation of understanding, and not for limitation. The above details do not limit the present application to necessarily adopt the above specific details for implementation.

[0064] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although several example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and sub-combinations thereof.

Claims

1. The housing structure of a partial discharge ultrasonic detection system, characterized in that, It includes a housing, which has an open structure; a cover plate, which is detachably covered on the top of the housing; a bracket, which is arranged inside the housing and includes a bottom layer, which supports a battery, and one end of the bottom layer vertically extends upward to form a first support section; a middle layer, which horizontally extends from the first support section, the middle layer supports a charge amplifier connected to the battery, and one end of the middle layer away from the first support section vertically extends upward to form a second support section; an upper layer, which horizontally extends from the top end of the second support section in a direction away from the middle layer, and the upper layer supports a data acquisition card; a post-filter, which is arranged on one side of the bracket and is connected to the data acquisition card and the charge amplifier; a pre-filter bracket, which includes a filter fixing plate and a partition, and at least one pre-filter is supported on the pre-filter bracket and is connected to the charge amplifier.

2. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The bottom of the housing is provided with stretchable support feet.

3. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The housing is a hollow rectangular structure.

4. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The cover plate is provided with a foldable handle.

5. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The housing includes a gasket for sealing communication and charging interfaces and an aviation plug.

6. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The input end of the pre-filter is connected to an external sensor, and the output end of the pre-filter is connected to the input end of the charge amplifier.

7. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The bottom layer, the middle layer and the upper layer are all horizontal layers.

8. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The first support section and the second support section are both provided with slots.

9. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The end of the bottom layer away from the first support section is provided with a bent edge.

10. The housing structure of the partial discharge ultrasonic detection system according to claim 1, characterized in that, The end of the upper layer away from the second support section is provided with a vertical baffle.

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