Sleeve fixing assembly for transformer

Abstract

The utility model relates to the field of transformers, and discloses a sleeve fixing assembly for a transformer, which comprises a fixing ring, a porcelain piece and a conducting rod, the porcelain piece is mounted on the periphery of the conducting rod, a positioning ring is mounted between the porcelain piece and the conducting rod, a bolt is movably mounted between the positioning ring and the conducting rod, and a supporting ring is fixedly connected to the periphery of the porcelain piece of the conducting rod. A fixing ring is movably installed on the top of the supporting ring, a fixing bolt is movably installed between the supporting ring and the porcelain piece, a porcelain ring is fixedly connected to the top of the porcelain piece, an insulating tube is installed on the inner side wall of the conducting rod, and a grading ring is installed on the periphery of the conducting rod at the bottom of the porcelain piece. According to the invention, the positioning ring made of nylon and the bolt are used for fixing, so that contact points between the porcelain piece and the conducting rod are reduced, and the sleeve is effectively prevented from shaking. And the positioning ring fills the gap, so that the fixing stability is enhanced, the mounting process is simplified, the cost is reduced, and the stability and the economical efficiency of the transformer bushing are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of transformers, in particular to a bushing fixing assembly for a transformer. BACKGROUND

[0002] The transformer is an electrical device used in the power system to change the voltage, which converts the voltage of alternating current from one value to another value through the principle of electromagnetic induction. The bushing of the transformer is the main insulation device outside the transformer tank, which leads the high-voltage and low-voltage leads inside the transformer to the insulation bushing outside the oil tank, and not only serves as the ground insulation of the leads, but also bears the function of fixing the leads.

[0003] At present, the porcelain piece and the conductive rod in the related transformer bushing are mainly fixed through the combination of the voltage equalizing ring and the insulation tube, but the lower connection is relatively unstable, and the conductive rod will shake during installation. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems in the background art, the application provides a bushing fixing assembly for a transformer.

[0005] The bushing fixing assembly for the transformer provided by the application adopts the following technical scheme:

[0006] The bushing fixing assembly for the transformer comprises a fixing ring, a porcelain piece and a conductive rod, the porcelain piece is mounted on the periphery of the conductive rod, a positioning ring is mounted between the porcelain piece and the conductive rod, a bolt is movably mounted between the positioning ring and the conductive rod, a support ring is fixedly connected to the periphery of the conductive rod porcelain piece, the fixing ring is movably mounted on the top of the support ring, a fixing bolt is movably mounted between the support ring and the porcelain piece, a porcelain ring is fixedly connected to the top of the porcelain piece, an insulation tube is mounted on the inner side wall of the conductive rod, and a voltage equalizing ring is mounted on the periphery of the conductive rod at the bottom of the porcelain piece.

[0007] Preferably, the periphery of the conductive rod is provided with a limiting groove, and the voltage equalizing ring is embedded in the limiting groove.

[0008] Preferably, both sides of the interior of the conductive rod are provided with bolt holes, and the bolt is threadedly connected with the bolt holes.

[0009] Preferably, a gasket is mounted between the fixing bolt and the fixing ring, and the gasket is made of stainless steel.

[0010] Preferably, a sealing gasket is arranged between the porcelain piece and the support ring, and the sealing gasket is made of silicone rubber.

[0011] In summary, the application has the following beneficial technical effects:

[0012] By adopting the positioning ring and the bolt made of nylon material as the fixing mode of the bottom of the transformer bushing, the contact points between the porcelain part and the conductive rod can be effectively reduced, thereby reducing the possibility of the shaking of the bushing. The structure design of the positioning ring fills the gap between the conductive rod and the porcelain part, so that the fixing is more stable and the overall shaking is prevented. Meanwhile, the positioning ring made of nylon material simplifies the fixing operation of the bottom, reduces the complexity of production and installation, and further reduces the cost, thereby improving the stability and economy of the transformer bushing. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the overall perspective view of the application embodiment;

[0014] Figure 2 is the partial structure schematic view of the conductive rod and the positioning ring of the application embodiment;

[0015] Figure 3 is the partial structure schematic view of the limiting groove and the limiting groove of the application embodiment;

[0016] Figure 4 is the partial structure schematic view of the conductive rod and the insulating tube of the application embodiment.

[0017] Marked as follows: 1, gasket; 2, fixed ring; 3, porcelain ring; 4, fixed bolt; 5, sealing gasket; 6, support ring; 7, porcelain part; 8, voltage-sharing ring; 9, conductive rod; 901, limiting groove; 902, bolt hole; 10, insulating tube; 11, positioning ring; 1101, bolt. DETAILED DESCRIPTION

[0018] The following will be combined with the Figures 1-4 The application is further described in detail.

[0019] The application embodiment discloses a kind of bushing fixed components for transformer. Refer to Figures 1-4A transformer bushing fixing assembly includes a fixing ring 2, a ceramic component 7, and a conductive rod 9. The ceramic component 7 is mounted around the conductive rod 9. A positioning ring 11 is installed between the ceramic component 7 and the conductive rod 9. A bolt 1101 is movably mounted between the positioning ring 11 and the conductive rod 9. A support ring 6 is fixedly connected to the periphery of the ceramic component 7 of the conductive rod 9. A fixing ring 2 is movably mounted on the top of the support ring 6. A fixing bolt 4 is movably mounted between the support ring 6 and the ceramic component 7. A ceramic ring 3 is fixedly connected to the top of the ceramic component 7. An insulating tube 10 is installed on the inner wall of the conductive rod 9. An equalizing ring 8 is installed around the conductive rod 9 at the bottom of the ceramic component 7. In traditional transformer bushings, the ceramic component 7 and the conductive rod 9 are mainly fixed by a combination of the equalizing ring 8 and the insulating tube 10. During customization, workers can omit the fabrication and installation of the equalizing ring 8 and insulating tube 10, and instead replace them with a nylon positioning ring 11 and bolt 1101. The positioning ring 11 is annular with four rectangular rings on its outer perimeter. Utilizing the structural characteristics of the positioning ring 11 itself, it fills the gap between the conductive rod 9 and the ceramic part 7, reducing the contact points between the fixing component and the entire ceramic sleeve, thereby reducing the possibility of the entire sleeve shaking. After adopting the new bottom fixing method of the sleeve using the nylon positioning ring 11 and bolt 1101, the positioning ring 11 tightly connects the conductive rod 9 and the ceramic part 7, thus preventing overall shaking. At the same time, using the positioning ring 11 alone also reduces the complexity of the bottom fixing operation and lowers costs.

[0020] Reference Figure 2 The conductive rod 9 is provided with a limiting groove 901 on its periphery, and the equalizing ring 8 is fitted into the limiting groove 901. The equalizing ring 8 can be embedded in the interior of the limiting groove 901, which increases the friction between the equalizing ring 8 and the conductive rod 9 and improves the stability of the installation of the equalizing ring 8.

[0021] Reference Figure 3 Both sides of the conductive rod 9 are provided with bolt holes 902, and the bolt 1101 is threadedly connected to the bolt holes 902. Screwing the bolt 1101 into the bolt holes 902 increases the friction between the positioning ring 11 and the conductive rod 9, thereby improving the stability of the positioning ring 11 installation.

[0022] Reference Figure 4 A gasket 1 is installed between the fixing bolt 4 and the fixing ring 2. The gasket 1 is made of stainless steel. The gasket 1 increases the friction between the fixing bolt 4 and the fixing ring 2, thereby improving the stability of the fixing bolt 4 installation.

[0023] Reference Figure 4 A sealing gasket 5 is provided between the ceramic component 7 and the support ring 6. The sealing gasket 5 is made of silicone rubber. The sealing gasket 5 can seal between the ceramic component 7 and the support ring 6, thereby improving the sealing effect of the connection between the ceramic component 7 and the support ring 6.

[0024] The implementation principle of a bushing fixing assembly for a transformer according to an embodiment of this application is as follows: First, when customizing the device, the equalizing ring 8 and the insulating tube 10 can be replaced with a positioning ring 11 and bolts 1101 made of nylon. The positioning ring 11 is annular and has four rectangular bodies on its periphery. The structural characteristics of the positioning ring 11 are used to fill the gap between the conductive rod 9 and the ceramic part 7, reducing the contact points between the fixing part and the ceramic bushing, thereby reducing the possibility of the entire bushing shaking. The positioning ring 11 tightly connects the conductive rod 9 and the ceramic part 7 to prevent the whole unit from shaking.

[0025] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0026] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0027] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bushing fixing assembly for a transformer, comprising a fixing ring (2), a ceramic component (7), and a conductive rod (9), characterized in that: A ceramic piece (7) is installed around the conductive rod (9). A positioning ring (11) is installed between the ceramic piece (7) and the conductive rod (9). A bolt (1101) is movably installed between the positioning ring (11) and the conductive rod (9). A support ring (6) is fixedly connected around the ceramic piece (7) of the conductive rod (9). A fixing ring (2) is movably installed on the top of the support ring (6). A fixing bolt (4) is movably installed between the support ring (6) and the ceramic piece (7). A ceramic ring (3) is fixedly connected to the top of the ceramic piece (7). An insulating tube (10) is installed on the inner side wall of the conductive rod (9). An equalizing ring (8) is installed around the conductive rod (9) at the bottom of the ceramic piece (7).

2. The bushing fixing assembly for a transformer according to claim 1, characterized in that: The conductive rod (9) is provided with a limiting groove (901) on its periphery, and the equalizing ring (8) is fitted with the limiting groove (901).

3. The bushing fixing assembly for a transformer according to claim 1, characterized in that: Both sides of the conductive rod (9) are provided with bolt holes (902), and the bolt (1101) is threadedly connected to the bolt holes (902).

4. A bushing fixing assembly for a transformer according to claim 1, characterized in that: A gasket (1) is installed between the fixing bolt (4) and the fixing ring (2), and the gasket (1) is made of stainless steel.

5. A bushing fixing assembly for a transformer according to claim 1, characterized in that: A sealing gasket (5) is provided between the ceramic component (7) and the support ring (6), and the sealing gasket (5) is made of silicone rubber.

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