Sensing device with circuit board
By using fixed columns and mounting parts made of insulating materials in the oil-immersed transformer sensing device, the circuit board is fixed between the groove walls of the accommodating groove, which solves the problem of the circuit board being too close to the grounding end, ensuring the stable operation of the circuit board and reducing safety risks.
Patent Information
- Application Number
- CN202422098075.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-28
AI Technical Summary
In the existing oil-immersed transformer sensing devices, the distance between the circuit board and the ground terminal is close, which makes it difficult for the circuit board to work normally, and there are certain safety hazards.
By introducing a fixed column made of insulating material into the sensing device, the fixed column is located between the circuit board and the groove wall of the receiving groove, increasing the distance between the circuit board and the lower case, and fixing the circuit board to the fixed column through the mounting member, ensuring stable arrangement of the circuit board.
It effectively increases the distance between the circuit board and the grounding end, prevents the circuit board from directly contacting the grounding end, ensures that the circuit board can operate stably, and reduces safety risks.
Smart Images
Figure CN222964675U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of sensing devices, and in particular, to a sensing device with a circuit board. Background Art
[0002] An oil-immersed transformer is a power device that uses transformer oil for cooling and insulation, and is widely used in various power systems. The oil-immersed transformer usually has a sensing device, which can on-line and real-time monitor the oil level, oil temperature and internal pressure parameters in the transformer oil tank, and upload the collected data.
[0003] In the related art, the sensing device includes an upper shell and a lower shell. The upper shell is arranged on the lower shell. A receiving groove is formed in the lower shell. A circuit board is arranged in the receiving groove. The circuit board is fixed in the receiving groove by bolts. A through hole is formed in the bottom wall of the receiving groove. A floating block is slidably connected in the through hole. A grounding end is arranged on the lower shell.
[0004] Since the lower shell is usually made of a metal material, the lower shell is connected to the grounding end, and the circuit board is a live body, so that the distance between the circuit board, the lower shell and the grounding end is short, and the electricity of the circuit board is led into the grounding end, making it difficult for the circuit board to play a role. Therefore, there may be certain potential safety hazards. Summary of the Utility Model
[0005] In order to improve the problem of the short distance between the circuit board and the grounding end, the present application provides a sensing device with a circuit board.
[0006] A sensing device with a circuit board provided by the present application adopts the following technical solutions:
[0007] A sensing device with a circuit board includes an upper shell and a lower shell. The upper shell is arranged on the lower shell. A receiving groove is formed in the lower shell. A circuit board is arranged in the receiving groove. A fixing column is arranged in the receiving groove. The fixing column is made of an insulating material. An installation part is arranged on the circuit board. The installation part is used to install the circuit board on the fixing column. When the circuit board is installed in the receiving groove, the fixing column is located between the circuit board and the groove wall of the receiving groove.
[0008] By adopting the above technical solutions, since the fixing column is made of an insulating material and the fixing column is located between the circuit board and the groove wall of the receiving groove, the distance between the circuit board and the lower shell is increased, so that the circuit board does not directly contact the grounding end, making the circuit board can be more stably arranged on the lower shell; the circuit board is fixed by the installation part, so that the circuit board can be fixed on the fixing column, reducing the possibility of the circuit board detaching from the fixing column.
[0009] Optionally, the mounting member includes a mounting bolt, a through hole for the mounting bolt to pass through is formed in the circuit board, and a mounting groove for threaded connection of the mounting bolt is provided on the fixing post. When the mounting bolt is threadedly connected into the mounting groove, the circuit board is mounted on the fixing post.
[0010] By adopting the above technical solution, the mounting bolt passes through the through hole and is threadedly connected into the mounting groove, so that the mounting bolt is fixed to the groove wall of the mounting groove, and thus the head of the mounting bolt fixes the circuit board, realizing the fixing of the circuit board on the fixing post and increasing the distance between the circuit board and the lower shell by the fixing post.
[0011] Optionally, a fixing bolt is provided on the fixing post, and a fixing groove for threaded connection of the fixing bolt is provided in the receiving groove. When the fixing bolt is threadedly connected into the fixing groove, the fixing post is mounted in the receiving groove.
[0012] By adopting the above technical solution, the fixing bolt is threadedly connected into the fixing groove and the fixing bolt is provided on the fixing post, enabling the fixing post to be stably mounted in the receiving groove, so that the fixing post can stably support the circuit board, reducing the possibility of the fixing post moving in the receiving groove and making the fixing post more stable.
[0013] Optionally, the cross section of the fixing post is a regular hexagon.
[0014] By adopting the above technical solution, since the cross section of the fixing post is a regular hexagon, people can rotate the fixing post through the regular hexagon to facilitate the threaded connection of the fixing bolt into the fixing groove and reduce the difficulty of driving the fixing post to rotate.
[0015] Optionally, a plurality of fixing posts are provided, and the plurality of fixing posts are circumferentially distributed along the receiving groove.
[0016] By adopting the above technical solution, since a plurality of fixing posts are provided and the plurality of fixing posts are circumferentially distributed along the receiving groove, the plurality of fixing posts can more stably support the circuit board, enabling the circuit board to be stably arranged on the fixing posts, further reducing the possibility of the circuit board shaking in the fixing posts and allowing the circuit board to operate stably.
[0017] Optionally, a stop bolt is provided on the upper shell, and a stop groove for threaded connection of the stop bolt is formed in the lower shell. When the stop bolt is threadedly connected into the stop groove, the upper shell is fixed to the lower shell.
[0018] By adopting the above technical solution, the stop bolt is threadedly connected into the stop groove, and the groove wall of the stop groove fixes the stop bolt, so that the lower shell and the upper shell can be fixed to each other, reducing the possibility of the upper shell and the lower shell moving.
[0019] Optionally, a ring groove is formed on the surface of the lower housing, and a sealing ring is arranged in the ring groove. The sealing ring is located between the lower housing and the upper housing.
[0020] By adopting the above technical solution, since the sealing ring is arranged in the ring groove, the sealing ring is limited by the ring groove and stably located on the lower housing, reducing the movement of the sealing ring in the lower housing; since the sealing ring is located between the lower housing and the upper housing, the sealing ring can ensure the sealing performance of the accommodation groove, so that the circuit board can be more stably located in the accommodation groove.
[0021] Optionally, a receiving groove for inserting the lower housing is formed on the upper housing. When the upper housing is mounted on the lower housing, the lower housing is located in the receiving groove.
[0022] By adopting the above technical solution, since the lower housing is located in the receiving groove, the groove wall of the receiving groove limits the lower housing, so that the upper housing and the lower housing are tightly combined together, realizing a more stable connection and improving the vibration resistance and impact resistance of the upper housing and the lower housing; and since the lower housing is located in the receiving groove, the groove wall of the receiving groove fixes the lower housing, further enhancing the sealing effect of the groove wall of the receiving groove on the accommodation groove.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. Since the fixing posts are made of insulating materials and are located between the circuit board and the groove wall of the accommodation groove, the distance between the circuit board and the lower housing is increased, so that the circuit board does not directly contact the grounding end, enabling the circuit board to be more stably arranged on the lower housing; the circuit board is fixed by the mounting member, so that the circuit board can be fixed on the fixing posts, reducing the possibility of the circuit board detaching from the fixing posts.
[0025] 2. Since the fixing bolts are threadedly connected in the fixing grooves and are arranged on the fixing posts, the fixing posts can be stably mounted in the accommodation groove, so that the fixing posts can stably support the circuit board, reducing the possibility of the fixing posts moving in the accommodation groove and making the fixing posts more stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a schematic structural diagram of an embodiment of the present application;
[0027] Figure 2 is an exploded view highlighting the stop bolts in an embodiment of the present application;
[0028] Figure 3 is an exploded view highlighting the lower housing in an embodiment of the present application;
[0029] Figure 4 is an exploded view highlighting the fixing posts in an embodiment of the present application.
[0030] Reference numerals: 1, upper shell; 11, stop bolt; 12, through hole; 13, receiving groove; 2, lower shell; 21, stop groove; 22, receiving groove; 23, fixing post; 24, fixing groove; 25, mounting groove; 26, grounding terminal; 27, annular groove; 271, sealing ring; 3, circuit board; 31, mounting member; 32, perforation. Detailed implementation manner
[0031] The following further elaborates on this application Figures 1-4 in conjunction with the attached drawings.
[0032] This embodiment discloses a sensing device with a circuit board. Refer to Figure 1 and Figure 2 , a sensing device with a circuit board, including an upper shell 1 and a lower shell 2.
[0033] Refer to Figure 2 , multiple stop bolts 11 are provided on the upper shell 1, and multiple through holes 12 are formed on the upper shell 1. The through holes 12 are arranged in a circumferential array along the upper shell 1, and the through holes 12 communicate with the receiving groove 13.
[0034] Refer to Figure 2 and Figure 3 , a receiving groove 13 is formed on the upper shell 1, and the lower shell 2 is inserted into the receiving groove 13. Multiple stop grooves 21 are formed on the surface of the lower shell 2. The multiple stop grooves 21 are arranged in a circumferential array along the lower shell 2, and the stop bolts 11 are threadedly connected to the stop grooves 21. A grounding terminal 26 is fixedly connected to the surface of the lower shell 2.
[0035] Refer to Figure 2 , the upper shell 1 is inserted into the receiving groove 13, align the stop grooves 21 with the through holes 12, and then insert the stop bolts 11 into the stop grooves 21 to fix the upper shell 1 and the lower shell 2 to each other.
[0036] Refer to Figure 2 and Figure 3 , an annular groove 27 is formed on the surface of the lower shell 2, and the annular groove 27 extends along the circumference of the lower shell 2. A sealing ring 271 is placed in the annular groove 27. When the upper shell 1 and the lower shell 2 are fixed to each other, the sealing ring 271 abuts against the groove wall of the annular groove 27 and the groove wall of the receiving groove 13.
[0037] Refer to Figure 3 and Figure 4, a receiving groove 22 is formed on the surface of the lower shell 2, and a plurality of fixing posts 23 are arranged in the receiving groove 22. The fixing posts 23 are made of insulating materials, such as plastics, and the cross-section of the fixing posts 23 is a regular hexagon. A plurality of fixing grooves 24 are formed on the bottom wall of the receiving groove 22, and the plurality of fixing grooves 24 are arranged in a circumferential array along the receiving groove 22. A fixing bolt is integrally formed on the end face of the fixing post 23, and the fixing bolt can be threadedly connected into the fixing groove 24. When the fixing post 23 is threadedly connected into the fixing groove 24, the fixing post 23 is fixed in the receiving groove 22.
[0038] Referring to Figure 3 and Figure 4 , a circuit board 3 is arranged in the lower shell 2, and a mounting member 31 is arranged on the circuit board 3. The mounting member 31 is used to fix the circuit board 3 on the fixing post 23. The mounting member 31 includes a plurality of mounting bolts, and a plurality of through holes 32 are formed on the surface of the circuit board 3 for the mounting bolts to pass through. A mounting groove 25 for threaded connection of the mounting bolts is formed on the end face of the fixing post 23 away from the fixing bolt. When the mounting bolts pass through the through holes 32 and are threadedly connected into the mounting groove 25, the circuit board 3 is fixed on the fixing post 23. In other embodiments, the mounting member 31 can be structures such as screws and clamping blocks to fix the circuit board 3 on the fixing post 23.
[0039] The implementation principle of a sensing device with a circuit board according to an embodiment of the present application is as follows: First, the staff threadedly connects the fixing bolt into the fixing groove 24 to install the fixing post 23 on the bottom wall of the receiving groove 22, and then passes the mounting bolt through the through hole 32 and threadedly connects it into the mounting groove 25 to fix the circuit board 3 on the fixing post 23.
[0040] Unless otherwise defined, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. The terms such as "including" or "comprising" mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. The terms such as "up", "down", "left", "right" are only used to indicate relative position relationships, and when the absolute position of the object being described changes, the relative position relationships may also change accordingly.
[0041] The above are only the preferred embodiments of this application and are not used to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of this application should be included in the protection scope of this application.
Claims
1. A sensor device with a circuit board, comprising an upper shell (1) and a lower shell (2), wherein the upper shell (1) is arranged on the lower shell (2), and the lower shell (2) is provided with a receiving groove (22), and a circuit board (3) is arranged in the receiving groove (22), characterized in that: A fixing column (23) is provided in the receiving groove (22), and the fixing column (23) is made of insulating material. A mounting piece (31) is provided on the circuit board (3), and the mounting piece (31) is used to mount the circuit board (3) on the fixing column (23). When the circuit board (3) is mounted in the receiving groove (22), the fixing column (23) is located between the circuit board (3) and the groove wall of the receiving groove (22).
2. A sensor device with a circuit board according to claim 1, characterized in that: The mounting member (31) comprises a mounting bolt, the circuit board (3) is provided with a through hole (32) for the mounting bolt to pass through, the fixing column (23) is provided with a mounting groove (25) for threaded connection of the mounting bolt, and when the mounting bolt is threadedly connected in the mounting groove (25), the circuit board (3) is mounted on the fixing column (23).
3. A sensor device with a circuit board according to claim 1, characterized in that: The fixing column (23) is provided with a fixing bolt, and the receiving groove (22) is provided with a fixing groove (24) for threaded connection of the fixing bolt. When the fixing bolt is threadedly connected in the fixing groove (24), the fixing column (23) is installed in the receiving groove (22).
4. A sensor device with a circuit board according to claim 3, characterized in that: The cross section of the fixing column (23) is a regular hexagon.
5. The sensor device with a circuit board according to claim 1, characterized in that: A plurality of the fixing columns (23) are provided, and the plurality of the fixing columns (23) are distributed along the circumference of the accommodating groove (22).
6. A sensor device with a circuit board according to claim 1, characterized in that: The upper shell (1) is provided with a stop bolt (11), and the lower shell (2) is provided with a stop groove (21) for the stop bolt (11) to be threadedly connected. When the stop bolt (11) is threadedly connected in the stop groove (21), the upper shell (1) is fixed to the lower shell (2).
7. A sensor device with a circuit board according to claim 1, characterized in that: An annular groove (27) is provided on the surface of the lower shell (2), a sealing ring (271) is provided in the annular groove (27), and the sealing ring (271) is located between the lower shell (2) and the upper shell (1).
8. The sensor device with a circuit board according to claim 1, characterized in that: The upper shell (1) is provided with a receiving groove (13) for the lower shell (2) to be inserted into. When the upper shell (1) is installed on the lower shell (2), the lower shell (2) is located in the receiving groove (13).