Novel porcelain sleeve structure

Abstract

The utility model discloses a novel porcelain bushing structure which comprises two combined porcelain bushings which are arranged in a left-right mirror symmetry mode, a conductive copper rod is wrapped between the two combined porcelain bushings, and a supporting ring is arranged on the surface of the bottom of each combined porcelain bushing. Each combined porcelain sleeve comprises a half-side sleeve, and an upper semicircular sealing rubber pad and a lower semicircular sealing rubber pad which are inserted into the upper port and the lower port of the half-side sleeve. According to the technical scheme, the porcelain sleeve is designed in a split mode, the effect that the sleeves are combined into one to wrap and seal the conductive copper rod is achieved through the protruding blocks and the bolts on the two half-side sleeves, and the complex procedure that hoisting and threading are needed in the installation process of the porcelain sleeve at the present stage is avoided; semicircular sealing rubber mats are arranged in the upper and lower ports of the two half sleeves, and the end faces of the semicircular sealing rubber mats are in contact with the semi-arc-shaped fixing plates in the mode that the supporting rings are matched with the screws, and the semicircular sealing rubber mats deform and become thin under extrusion to block gaps between the half sleeves and the conductive copper rod.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer porcelain bushings, in particular to a novel porcelain bushing structure. Background Art

[0002] The porcelain bushing is an insulating component widely used in power systems. When installing it, the lead cable needs to be led out from the upper end of the porcelain bushing. After the lead cable is straightened, the lead cable head is clamped in the upper positioning groove through the positioning pin, the sealing ring is placed, the pressure cover is installed, and the sealed cable head is tightened. Not only is the process relatively complicated, but the porcelain bushing also requires special hoists for adaptation during hoisting and installation. At the same time, since the porcelain bushing generally adopts air insulation or oil insulation, the sealing requirements of the upper and lower ports of the porcelain bushing are relatively high, otherwise there is a risk of poor sealing and insulation failure. Therefore, those skilled in the art have proposed a new porcelain bushing structure. Utility Model Content

[0003] The purpose of the utility model is to provide a technical solution of a novel porcelain bushing structure to solve the deficiencies mentioned in the background technology. In order to solve the disadvantages and defects mentioned in the background technology, the technical solution of the utility model has the following contents:

[0004] It comprises two combined porcelain bushings which are arranged in a left-right mirror symmetry, a conductive copper rod is wrapped between the two combined porcelain bushings, and a supporting ring is arranged on the bottom surface of the combined porcelain bushings;

[0005] The combined porcelain bushings all include a half bushing, an upper semicircular sealing rubber pad and a lower semicircular sealing rubber pad inserted into the upper and lower ports of the half bushing, and a semi-arc fixing plate fixed to the side wall of the bottom of the inner cavity of the half bushing; wherein, two left-side mirror-symmetrical sealing rubber strips are fixed on the right end face of the left half bushing by adhesive, and two sealing grooves adapted to couple with the sealing rubber strips are opened on the left end face of the right half bushing;

[0006] The front and rear sides of the top and the front and rear sides of the bottom of the outer ring of the half sleeves close to each other are fixed with protrusions, and the protrusions are locked and connected to each other by passing a locking bolt;

[0007] A convex strip is fixed to the bottom of the side surface of the half sleeve that is away from each other, and a screw inserted into the bottom of the support ring passes through the inside of the convex strip. The top end surface of the lower semicircular sealing gasket contacts the lower surface of the semi-arc fixing plate, and the bottom end surface of the lower semicircular sealing gasket contacts the upper surface of the support ring.

[0008] As a preferred solution of the utility model, the ends of the protrusions that are close to each other are in contact with each other, and a gasket nut is screwed and locked on the section of the locking bolt located outside the protrusion, which is used to lock the two half-sleeves and force the sealing strip to be stuck into the sealing groove.

[0009] As a preferred solution of the utility model, a circular hole for the conductive copper rod to pass through is opened at the inner central position of the upper semicircular sealing pad and the lower semicircular sealing pad, and the inner wall of the circular hole is in a tight fit with the outer ring of the conductive copper rod.

[0010] As a preferred solution of the utility model, 2-3 annular through holes are opened inside the lower semicircular sealing pad, which are used for forcing the lower semicircular sealing pad to wrap the conductive copper rod inward after the support ring is locked and lifted upward.

[0011] As a preferred solution of the utility model, the lower semicircular sealing gasket and the upper semicircular sealing gasket are arranged in upper and lower mirror symmetry, and the lower semicircular sealing gasket and the upper semicircular sealing gasket are both composed of two layers of circular rings, wherein the outer ring of the circular ring close to the half sleeve is in close contact with the inner walls of the upper and lower ports of the half sleeve respectively, and the side of the circular ring away from the half sleeve that is close to each other is in close contact with the upper and lower port surfaces of the half sleeve respectively.

[0012] As a preferred solution of the utility model, the interior of the convex strips is provided with through holes for the screw rod to pass through, and the sections of the screw rod located above and below the convex strips are screwed with a nut.

[0013] As a preferred solution of the utility model, the semi-arc fixing plates are all semi-circular, and the distance between the semi-arc fixing plates and the support ring is smaller than the thickness of the lower semi-circular sealing pad, which is used to force the lower semi-circular sealing pad to be squeezed and deformed to become thinner to seal the gap between the half sleeve and the conductive copper rod.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] In the technical solution, the porcelain bushing is designed to be split, and the protrusions and bolts on the two half-side bushings are used to achieve the effect of combining the bushings into one to wrap and seal the conductive copper rod, thereby avoiding the complicated process of lifting and threading required during the installation of the porcelain bushing at this stage; and semicircular sealing rubber pads are arranged in the upper and lower ports of the two half-side bushings, and the end faces of the semicircular sealing rubber pads are contacted with the semi-arc fixing plate by using support rings and screws, so that the gap between the half bushings and the conductive copper rod is blocked when it is squeezed and deformed and thinned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the combined porcelain bushing structure;

[0018] Figure 2 This is a schematic diagram of the combined porcelain bushing structure after decomposition;

[0019] Figure 3 It is the internal schematic diagram of half casing;

[0020] Figure 4 It is the external schematic diagram of half casing;

[0021] Figure 5 It is a side view schematic diagram of half casing.

[0022] Description of reference numerals:

[0023] 1. Combined porcelain bushing; 11. Half bushing; 12. Semi-arc fixing plate; 13. Annular through hole; 14. Lower semicircular sealing pad; 15. Sealing strip; 16. Upper semicircular sealing pad; 17. Bump; 18. Locking bolt; 19. Screw; 110. Bump; 111. Sealing groove; 2. Conductive copper rod; 3. Support ring. DETAILED DESCRIPTION

[0024] In order to more clearly explain and illustrate the technical solution and implementation of the present utility model, several preferred specific embodiments for implementing the technical solution of the present utility model are introduced below.

[0025] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application and use. It should be understood that in all these figures, the same or similar figure numbers indicate the same or similar parts and features. The various figures only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may use exaggerated methods to illustrate the relevant details or structures of the embodiments of the present disclosure. The various publications, patents and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model.

[0026] Embodiment, a better technical solution for a new porcelain bushing structure.

[0027] Refer to the instruction manual Figure 2 As shown; comprising two combined porcelain bushings 1 arranged in left and right mirror symmetry, a conductive copper rod 2 is wrapped between the two combined porcelain bushings 1, and a support ring 3 is provided on the bottom surface of the combined porcelain bushings 1;

[0028] Refer to the instruction manual Figure 3 As shown; the combined porcelain bushing 1 includes a half bushing 11, an upper semicircular sealing rubber pad 16 and a lower semicircular sealing rubber pad 14 inserted in the upper and lower ports of the half bushing 11, and a semi-arc fixing plate 12 fixed on the side wall of the bottom of the inner cavity of the half bushing 11; wherein, two left-side mirror-symmetrical sealing rubber strips 15 are fixed on the right end surface of the left half bushing 11 by adhesive, and two sealing grooves 111 adapted to couple with the sealing rubber strips 15 are opened on the left end surface of the right half bushing 11;

[0029] Refer to the instruction manual Figure 4 As shown; the front and rear sides of the top and the front and rear sides of the bottom of the outer ring of the half sleeve 11 that are close to each other are fixed with protrusions 17, and the protrusions 17 are locked and connected to each other by passing through a locking bolt 18; the bottom of the side surface of the half sleeve 11 that is away from each other is fixed with a convex strip 110, and the inside of the convex strip 110 passes through a screw 19 inserted into the bottom of the support ring 3, and the top end face of the lower semicircular sealing pad 14 contacts the lower surface of the semi-arc fixing plate 12, and the bottom end face of the lower semicircular sealing pad 14 contacts the upper surface of the support ring 3.

[0030] Refer to the instruction manual Figure 4 As shown; the ends of the protrusions 17 that are close to each other are in contact with each other, and the locking bolts 18 located on the sections outside the protrusions 17 are screwed and locked with a gasket nut for locking the two half sleeves 11 and forcing the sealing strip 15 to be inserted into the sealing groove 111.

[0031] Refer to the instruction manual Figure 3 As shown, the upper semicircular sealing pad 16 and the lower semicircular sealing pad 14 are provided with a circular hole for the conductive copper rod 2 to pass through at the central position, and the inner wall of the circular hole is in a tight fit with the outer ring of the conductive copper rod 2. The lower semicircular sealing pad 14 is provided with 2-3 annular through holes 13 for the support ring 3 to be locked and lifted upward to force the lower semicircular sealing pad 14 to wrap the conductive copper rod 2 inward.

[0032] Refer to the instruction manual Figure 3As shown; the lower semicircular sealing rubber pad 14 and the upper semicircular sealing rubber pad 16 are arranged in mirror symmetry, and the lower semicircular sealing rubber pad 14 and the upper semicircular sealing rubber pad 16 are both composed of two layers of circular rings, wherein the outer rings close to the half sleeve 11 are in close contact with the inner walls of the upper and lower ports of the half sleeve 11, and the sides of the circular rings away from the half sleeve 11 are in close contact with the upper and lower port surfaces of the half sleeve 11. The interior of the convex strip 110 is provided with a through hole for the screw 19 to pass through, and the sections of the screw 19 located above and below the convex strip 110 are screwed with a nut.

[0033] Refer to the instruction manual Figure 3 As shown; the semi-arc fixing plates 12 are all semi-circular, and the distance between the semi-arc fixing plates 12 and the support ring 3 is less than the thickness of the lower semi-circular sealing pad 14, which is used to force the lower semi-circular sealing pad 14 to be squeezed and deformed to become thinner to seal the gap between the half sleeve 11 and the conductive copper rod 2.

[0034] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:

[0035] The two half-sleeves 11 are aligned with each other and buckled on the left and right sides of the conductive copper rod 2, and the protrusions 17 at the upper and lower positions are in contact with each other. The locking bolts 18 are used to diagonally screw and tighten the half-sleeves 11, so that the sealing strip 15 is inserted into the sealing groove 111 to seal the side seams between the half-sleeves 11. At the same time, the upper semicircular sealing pad 16 and the lower semicircular sealing pad 14 are aligned in pairs to wrap the upper and lower sections of the outer circle of the conductive copper rod 2. After the half-sleeve 11 is installed, the screw 19 is used to lock the support ring 3 to push it upward, forcing the lower semicircular sealing pad 14 to become thinner after contacting the semi-arc fixing plate 12. According to the principle of conservation of mass, the inner circle diameter of the lower semicircular sealing pad 14 becomes smaller, and the outer circle diameter becomes larger to seal the port surface gap of the half-sleeve 11 and the gap of the conductive copper rod 2.

[0036] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A novel porcelain bushing structure, comprising two combined porcelain bushings (1) arranged in a left-right mirror-symmetrical manner, characterized in that: A conductive copper rod (2) is wrapped between the two combined porcelain bushings (1), and a support ring (3) is provided on the bottom surface of the combined porcelain bushings (1); The combined porcelain bushing (1) comprises a half bushing (11), an upper semicircular sealing rubber pad (16) and a lower semicircular sealing rubber pad (14) inserted into the upper and lower ports of the half bushing (11), and a semi-arc fixing plate (12) fixed to the side wall of the bottom of the inner cavity of the half bushing (11); wherein two left-side mirror-symmetrical sealing rubber strips (15) are fixed on the right side end surface of the left half bushing (11) by adhesive, and two sealing grooves (111) adapted to couple with the sealing rubber strips (15) are opened on the left side end surface of the right half bushing (11); The front and rear sides of the top and the front and rear sides of the bottom of the outer ring of the half sleeve (11) close to each other are fixed with protrusions (17), and the protrusions (17) are locked and connected to each other by passing a locking bolt (18); A convex strip (110) is fixed to the bottom of the side surface of each half sleeve (11) that is away from each other, and a screw (19) is inserted into the bottom of the support ring (3) through the inside of the convex strip (110), and the top end surface of the lower semicircular sealing pad (14) contacts the lower surface of the semi-arc fixing plate (12), and the bottom end surface of the lower semicircular sealing pad (14) contacts the upper surface of the support ring (3).

2. A novel porcelain bushing structure according to claim 1, characterized in that: The ends of the protrusions (17) that are close to each other are in contact with each other, and a gasket nut is screwed and locked on the section of the locking bolt (18) located outside the protrusion (17), which is used to lock the two half-sleeves (11) and force the sealing strip (15) to be stuck into the sealing groove (111).

3. A novel porcelain bushing structure according to claim 1, characterized in that: A circular hole for the conductive copper rod (2) to pass through is provided at the inner central position of the upper semicircular sealing rubber pad (16) and the lower semicircular sealing rubber pad (14), and the inner wall of the circular hole is in a tightly fitting state with the outer ring of the conductive copper rod (2).

4. A novel porcelain bushing structure according to claim 1, characterized in that: The lower semicircular sealing rubber pad (14) is provided with 2-3 annular through holes (13) for forcing the lower semicircular sealing rubber pad (14) to move inward to wrap around the conductive copper rod (2) after the support ring (3) is locked and lifted upward.

5. The novel porcelain bushing structure according to claim 1 is characterized in that: The lower semicircular sealing pad (14) and the upper semicircular sealing pad (16) are arranged in mirror symmetry, and the lower semicircular sealing pad (14) and the upper semicircular sealing pad (16) are both composed of two layers of circular rings, wherein the outer rings close to the half sleeve (11) are in close contact with the inner walls of the upper and lower ports of the half sleeve (11), and the sides of the circular rings away from the half sleeve (11) are in close contact with the upper and lower port surfaces of the half sleeve (11).

6. The novel porcelain bushing structure according to claim 1 is characterized in that: The convex strips (110) are provided with through holes for the screw rod (19) to pass through, and the sections of the screw rod (19) located above and below the convex strips (110) are both screwed with a nut.

7. The novel porcelain bushing structure according to claim 1 is characterized in that: The semi-arc fixing plates (12) are all in the shape of a semicircular ring, and the distance between the semi-arc fixing plates (12) and the support ring (3) is smaller than the thickness of the lower semi-circular sealing rubber pad (14), so as to force the lower semi-circular sealing rubber pad (14) to be squeezed and deformed to become thinner to seal the gap between the half sleeve (11) and the conductive copper rod (2).

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