Press-embedded insulating sleeve
By designing a press-embedded sealing structure in the insulated sleeve, the problem of insufficient sealing at the contact between the insulated sleeve and the transformer is solved, and higher sealing and insulation performance are achieved to prevent impurities from entering the transformer.
Patent Information
- Application Number
- CN202421823263.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-30
AI Technical Summary
There are gaps in the sealing surface where the existing insulating sleeves come into contact with the transformer, resulting in a decrease in sealing performance and affecting insulation, which in turn causes impurities to enter the transformer and affect normal operation.
A press-embedded insulating sleeve is designed to form a sealing structure by setting through holes on the porcelain piece and embedding a conductive rod, combining a small flange and a locking assembly, thereby improving the sealing property between the porcelain piece and the transformer.
It effectively improves the sealing between the insulating sleeve and the transformer, prevents impurities from entering, ensures the normal operation of the transformer, and enhances the insulation performance.
Smart Images
Figure CN222914539U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of insulating bushing equipment, and particularly relates to a press-fitting type insulating bushing. Background Art
[0002] In the early stage, insulating bushings mainly used natural materials such as quartz and silica. These materials have good insulation performance and high-temperature resistance. However, the mechanical strength of natural materials is limited, and their performance stability is poor in extreme environments (such as high humidity, high pollution, etc.), which limits the application range and service life of transformers. With the progress of technology, porcelain insulating bushings have become the mainstream. Porcelain materials have high mechanical strength, good insulation performance and heat resistance, and can withstand the impact of high voltage and large current. Through precise manufacturing processes, porcelain insulating bushings can achieve smaller volumes and higher insulation grades, meeting the requirements of high-voltage transformers. In addition, the surface treatment technology of porcelain materials has also been developed, improving its stability and reliability in harsh environments. In recent years, fiber-reinforced plastics (FRP) have been widely used as new insulating materials in insulating bushings.
[0003] The sealing surfaces of existing insulating bushings in contact with transformers are usually placed on the flat section or partially on the flat section. Since the sealing ring is close to the edge, there will be a large gap between the porcelain part and the metal fitting, resulting in a decline in the sealing performance of the sealing ring, affecting the insulation of the insulating bushing, and further causing impurities to enter the transformer, affecting the normal operation of the transformer. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a press-fitting type insulating bushing for the above-mentioned existing technical problems, achieving the effect of sealing between the insulating bushing and the transformer.
[0005] In view of this, the utility model provides a press-fitting type insulating bushing, including:
[0006] A porcelain part, in which a through hole is provided, and the porcelain part is integrally formed;
[0007] A conductive rod, which is arranged in the through hole;
[0008] A sealing structure, which includes:
[0009] A small flange, which is press-fitted at the bottom of the porcelain part, and the top of the small flange is n-shaped. The top of the small flange forms a sealing surface with the top surface of the transformer.
[0010] A first sealing ring, which is arranged between the porcelain part and the flange;
[0011] Wherein, a locking component is arranged above the small flange.
[0012] In this technical solution, the locking assembly presses the porcelain part against the top surface of the transformer, so that the small flange embedded in the porcelain part and the top surface of the transformer form a sealing surface. The first sealing ring is arranged in the gap of the embedding surface, which is beneficial to improving the sealing performance between the porcelain part and the transformer and preventing impurities from entering the transformer and affecting the normal operation of the transformer.
[0013] In the above technical solution, further, the locking assembly includes:
[0014] A fixing ring, which is arranged above the small flange;
[0015] First mounting holes, which are symmetrically arranged on the fixing ring;
[0016] First bolts, which are arranged in the first mounting holes;
[0017] Among them, the first bolts cooperate with the first mounting holes to fasten the porcelain part to the transformer.
[0018] In this technical solution, the fixing ring fits on the outer wall of the porcelain part above the small flange. The first bolts cooperate with the first mounting holes. By adjusting the first bolts, the small flange on the porcelain part is fastened to the top of the transformer, increasing the sealing performance between the small flange and the transformer.
[0019] In the above technical solution, further, the fixing ring is of a split type and includes:
[0020] A semi-circular convex ring, which is sleeved on the porcelain part above the small flange;
[0021] A semi-circular concave ring, which is arranged on the opposite side of the semi-circular convex ring;
[0022] Protrusions, which are symmetrically arranged on the section of the semi-circular convex ring;
[0023] Chutes, which are symmetrically arranged in the section of the semi-circular concave ring;
[0024] Among them, the protrusions are snap-fitted with the chutes.
[0025] In this technical solution, the fixing ring is divided into a semi-circular convex ring and a semi-circular concave ring, which is convenient for disassembly. The protrusions are snapped into the chutes to make the semi-circular convex ring and the semi-circular concave ring fit together, preventing the looseness of the semi-circular convex ring and the semi-circular concave ring from reducing the sealing performance between them when fastening the small flange and the top surface of the transformer to form a sealing surface.
[0026] In the above technical solution, further, second mounting holes penetrate through the protrusions and the chutes, and second bolts are arranged in the second mounting holes.
[0027] In this technical solution, the semi-circular convex ring and the semi-circular concave ring are further fastened through the cooperation of the second bolt and the second mounting hole.
[0028] In the above technical solution, further, protrusions are provided on the outer wall of the porcelain part that fits the fixed ring, and notches are provided on the inner circular rings of the semi-circular convex ring and the semi-circular concave ring. Among them, the protrusions are snap-connected with the notches.
[0029] In this technical solution, the protrusions are snapped into the notches, increasing the contact area between the inner rings of the semi-circular convex ring and the semi-circular concave ring and the outer wall of the porcelain part, and further increasing the friction force between the inner rings of the semi-circular convex ring and the semi-circular concave ring and the outer wall of the porcelain part, so that the semi-circular convex ring and the semi-circular concave ring are closely attached to the porcelain part.
[0030] In the above technical solution, further, threads are provided on the connection parts of the conductive rod with the access terminal and the transformer.
[0031] In this technical solution, when connecting with the access terminal, the conductive rod and the access terminal are connected together through the threads on the conductive rod. When accessing the transformer end, the conductive rod and the transformer are connected together by screwing the conductive rod, which facilitates the connection between the access terminal and the transformer by the conductive rod.
[0032] In the above technical solution, further, a tin-copper protective film is electroplated on the threads.
[0033] In this technical solution, electroplating a tin-copper protective film not only prevents water and dust from entering the access terminal and the transformer, but also strengthens the contact points and ensures the conductivity of the device.
[0034] In the above technical solution, further, a top cover is sleeved on the top of the porcelain part, and a fixing nut is provided on the top of the top cover.
[0035] In this technical solution, the fixing nut on the top cover fixes the conductive rod to prevent the conductive rod from falling off.
[0036] In the above technical solution, further, a second sealing ring is provided between the top cover and the top of the porcelain part.
[0037] In this technical solution, the second sealing ring increases the sealing performance between the top cover and the top of the porcelain part, preventing impurities from entering the through hole of the porcelain part and affecting the conductivity of the device.
[0038] The beneficial effects of the present utility model are:
[0039] 1. The fixed ring fits on the outer wall of the porcelain part above the small flange. The first bolt cooperates with the first mounting hole. By adjusting the first bolt, the small flange on the porcelain part is fastened to the top of the transformer, increasing the sealing performance between the small flange and the transformer.
[0040] 2. Electroplate a tin - copper protective film, which not only prevents water and dust from entering the access terminals and the transformer, but also strengthens the contact points and ensures the conductivity of the device.
[0041] 3. The second sealing ring increases the sealing performance between the top cover and the top of the porcelain part, preventing impurities from entering the through - hole of the porcelain part and affecting the conductivity of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] Figure 1 is a perspective view of the present utility model;
[0043] Figure 2 is a sectional view of the present utility model;
[0044] Figure 3 is the present utility model Figure 2 an enlarged view of area A in;
[0045] Figure 4 is the present utility model Figure 2 an enlarged view of area B in;
[0046] Figure 5 is a perspective view of the semi - circular convex ring of the present utility model;
[0047] Figure 6 is a perspective view of the semi - circular concave ring of the present utility model;
[0048] The reference signs in the drawings are shown as:
[0049] 1, porcelain part; 2, through - hole; 3, conductive rod; 4, small flange; 5, first sealing ring; 6, fixing ring; 7, first mounting hole; 8, first bolt; 9, semi - circular convex ring; 10, semi - circular concave ring; 11, protrusion; 12, chute; 13, second mounting hole; 14, second bolt; 15, protrusion; 16, notch; 17, thread; 18, tin - copper protective film; 19, top cover; 20, fixing nut; 21, second sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0050] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.
[0051] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters in the following drawings represent similar items, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0052] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.
[0053] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0054] It should be noted that in this application, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0055] Embodiment 1:
[0056] As Figures 1 - 6 shown, this embodiment provides a press-fitted insulating bushing, comprising: a porcelain part 1, in which a through hole 2 is provided, and the porcelain part 1 is integrally formed; a conductive rod 3, which is arranged in the through hole 2; a sealing structure, which includes: a small flange 4, the small flange 4 is press-fitted at the bottom of the porcelain part 1, and the top of the small flange 4 is of an n-shaped setting, the top of the small flange 4 and the top surface of the transformer form a sealing surface, a first sealing ring 5, which is arranged between the porcelain part 1 and the flange; wherein, a locking assembly is arranged above the small flange 4.
[0057] The locking assembly presses the porcelain part 1 against the top surface of the transformer, so that the small flange 4 press-fitted on the porcelain part 1 and the top surface of the transformer form a sealing surface, and the first sealing ring 5 is arranged in the gap of the press-fitting surface, which is beneficial to improving the sealing performance between the porcelain part 1 and the transformer and preventing impurities from entering the transformer and affecting the normal operation of the transformer.
[0058] The locking assembly includes: a fixing ring 6, which is arranged above the small flange 4; first mounting holes 7, which are symmetrically arranged on the fixing ring 6; first bolts 8, which are arranged in the first mounting holes 7; wherein, the first bolts 8 cooperate with the first mounting holes 7 to fasten the porcelain part 1 on the transformer.
[0059] The fixing ring 6 fits on the outer wall of the porcelain part 1 above the small flange 4, and the first bolts 8 cooperate with the first mounting holes 7. By adjusting the first bolts 8, the small flange 4 on the porcelain part 1 is fastened to the top of the transformer, increasing the sealing performance between the small flange 4 and the transformer.
[0060] The fixing ring 6 is arranged in a split type. The fixing ring 6 includes: a semi-circular convex ring 9 which is sleeved on the porcelain part 1 above the small flange 4; a semi-circular concave ring 10 which is arranged on the opposite side of the semi-circular convex ring 9; a protrusion 11 which is symmetrically arranged on the section of the semi-circular convex ring 9; a sliding groove 12 which is symmetrically arranged in the section of the semi-circular concave ring 10; wherein, the protrusion 11 is engaged with the sliding groove 12.
[0061] The fixing ring 6 is divided into a semi-circular convex ring 9 and a semi-circular concave ring 10, which is convenient for disassembly. The protrusion 11 is snapped into the sliding groove 12, so that the semi-circular convex ring 9 and the semi-circular concave ring 10 are fitted together, preventing the looseness of the semi-circular convex ring 9 and the semi-circular concave ring 10 from reducing the sealing performance when the small flange 4 and the top surface of the transformer are buckled to form a sealing surface. The protrusion 11 and the sliding groove 12 are penetrated by a second mounting hole 13, and a second bolt 14 is arranged in the second mounting hole 13. The semi-circular convex ring 9 and the semi-circular concave ring 10 are further buckled through the cooperation of the second bolt 14 and the second mounting hole 13.
[0062] On the outer wall of the porcelain part 1 where the porcelain part 1 is in contact with the fixing ring 6, there is a protrusion 15, and on the inner circular ring of the semi-circular convex ring 9 and the semi-circular concave ring 10, there is a notch 16. Among them, the protrusion 15 is engaged with the notch 16. The protrusion 15 is snapped into the notch 16, increasing the contact area between the inner rings of the semi-circular convex ring 9 and the semi-circular concave ring 10 and the outer wall of the porcelain part 1, and further increasing the friction force between the inner rings of the semi-circular convex ring 9 and the semi-circular concave ring 10 and the outer wall of the porcelain part 1, so that the semi-circular convex ring 9 and the semi-circular concave ring 10 are tightly attached to the porcelain part 1.
[0063] Embodiment 2:
[0064] As Figures 1 - 6 shown, this embodiment provides a press-fitted insulating bushing. In addition to including the technical solutions of the above embodiment, it also has the following technical features. Threads 17 are provided on both the connection parts of the conductive rod 3 with the access terminal and the transformer.
[0065] When connecting with the access terminal, the conductive rod 3 and the access terminal are connected together through the threads 17 on the conductive rod 3. When accessing the transformer end, the conductive rod 3 and the transformer are connected together by screwing the conductive rod 3, which is convenient for the conductive rod 3 to connect the access terminal and the transformer.
[0066] A tin-copper protective film 18 is electroplated on the threads 17. Electroplating a layer of tin-copper protective film 18 not only prevents water and dust from entering the access terminal and the transformer, but also strengthens the contact point and ensures the conductivity of the device. A top cover 19 is sleeved on the top of the porcelain part 1, and a fixing nut 20 is arranged on the top of the top cover 19. The fixing nut 20 on the top cover 19 fixes the conductive rod 3 to prevent the conductive rod 3 from falling off.
[0067] A second sealing ring 21 is provided between the top cover 19 and the top of the porcelain part 1. The second sealing ring 21 increases the sealing performance between the top cover 19 and the top of the porcelain part 1, preventing impurities from entering the through hole 2 of the porcelain part 1 and affecting the conductivity of the device.
[0068] Working principle: The fixing ring 6 is divided into a semi-circular convex ring 9 and a semi-circular concave ring 10 for easy disassembly. The protrusion 15 is snapped into the notch 16 to increase the contact area between the inner rings of the semi-circular convex ring 9 and the semi-circular concave ring 10 and the outer wall of the porcelain part 1, thereby increasing the friction between the inner rings of the semi-circular convex ring 9 and the semi-circular concave ring 10 and the outer wall of the porcelain part 1, so that the semi-circular convex ring 9 and the semi-circular concave ring 10 are closely attached to the porcelain part 1.
[0069] The semi-circular convex ring 9 and the semi-circular concave ring 10 are further fastened through the cooperation of the second bolt 14 and the second mounting hole 13. Then the combined fixing ring 6 is attached to the outer wall of the porcelain part 1 above the small flange 4. The first bolt 8 is matched with the first mounting hole 7, and the first bolt 8 is adjusted to fasten the small flange 4 on the porcelain part 1 to the top of the transformer, so that the small flange 4 embedded in the porcelain part 1 and the top surface of the transformer form a sealing surface. The first sealing ring 5 is arranged in the gap of the embedding surface, which is beneficial to improving the sealing performance between the porcelain part 1 and the transformer and preventing impurities from entering the transformer and affecting the normal operation of the transformer.
[0070] When connecting to the access terminal, the conductive rod 3 is connected to the access terminal through the thread 17 on the conductive rod 3. A tin-copper protective film 18 is electroplated on the thread 17, which not only prevents water and dust from entering the access terminal and the transformer, but also strengthens the contact point and ensures the conductivity of the device. When connecting to the transformer terminal, the conductive rod 3 is connected to the transformer by screwing the conductive rod 3, which is convenient for the conductive rod 3 to connect the access terminal and the transformer. The fixing nut 20 on the top cover 19 fixes the conductive rod 3 to prevent the conductive rod 3 from falling off. The second sealing ring 21 increases the sealing performance between the top cover 19 and the top of the porcelain part 1, preventing impurities from entering the through hole 2 of the porcelain part 1 and affecting the conductivity of the device.
[0071] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.
Claims
1. A press-fit insulating sleeve, characterized in that ,include: A ceramic component (1), wherein a through hole (2) is provided in the ceramic component (1), and the ceramic component (1) is provided in an integrated manner; A conductive rod (3), wherein the conductive rod (3) is arranged in the through hole (2); A sealing structure, comprising: A small flange (4), wherein the small flange (4) is pressed into the bottom of the porcelain component (1), and the top of the small flange (4) is arranged in an n-shaped manner, and the top of the small flange (4) forms a sealing surface with the top surface of the transformer, A first sealing ring (5), the first sealing ring (5) being arranged between the porcelain component (1) and the flange; Wherein, a locking assembly is arranged above the small flange (4).
2. A press-fit insulating sleeve according to claim 1, characterized in that: The locking assembly comprises: A fixing ring (6), wherein the fixing ring (6) is arranged above the small flange (4); A first mounting hole (7), the first mounting hole (7) being symmetrically arranged on the fixing ring (6); A first bolt (8), wherein the first bolt (8) is arranged in the first mounting hole (7); The first bolt (8) cooperates with the first mounting hole (7) to fasten the ceramic component (1) onto the transformer.
3. A press-fit insulating sleeve according to claim 2, characterized in that: The fixing ring (6) is arranged in a split type, and the fixing ring (6) comprises: A semicircular convex ring (9), wherein the semicircular convex ring (9) is sleeved on the porcelain part (1) above the small flange (4); A semicircular concave ring (10), wherein the semicircular concave ring (10) is arranged on the opposite side of the semicircular convex ring (9); A protrusion (11), wherein the protrusion (11) is symmetrically arranged on a section of the semicircular convex ring (9); A slide groove (12), wherein the slide groove (12) is symmetrically arranged in a section of the semicircular concave ring (10); The protrusion (11) is snap-fitted and connected with the slide groove (12).
4. A press-fit insulating sleeve according to claim 3, characterized in that: A second mounting hole (13) passes through the protrusion (11) and the slide groove (12), and a second bolt (14) is arranged in the second mounting hole (13).
5. The press-fit insulating sleeve according to claim 4, characterized in that: A protrusion (15) is provided on the outer wall of the porcelain piece (1) where the porcelain piece (1) and the fixing ring (6) are fitted, and a notch (16) is provided on the inner rings of the semicircular convex ring (9) and the semicircular concave ring (10), wherein the protrusion (15) and the notch (16) are snap-fitted and connected.
6. The press-fit insulating sleeve according to claim 1, characterized in that: The connection parts between the conductive rod (3) and the access terminal and the transformer are all provided with threads (17).
7. The press-fit insulating sleeve according to claim 6, characterized in that: The thread (17) is electroplated with a tin-copper protective film (18).
8. The press-fit insulating sleeve according to claim 1, characterized in that: A top cover (19) is sleeved on the top of the porcelain part (1), and a fixing nut (20) is arranged on the top of the top cover (19).
9. The press-fit insulating sleeve according to claim 8, characterized in that: A second sealing ring (21) is provided between the top cover (19) and the top of the porcelain component (1).