Elbow welding seam supporting device

Abstract

The utility model discloses an elbow welding seam supporting device which comprises an elbow formed by welding an upper semicircular arc plate and a lower semicircular arc plate. A plurality of turnbuckles are arranged in the elbow, each turnbuckle comprises a threaded buckle and two screw rods connected with the two ends of the threaded buckle through threads, the outer ends of the two screw rods are fixedly connected with supporting lacing wire plates, and clamping grooves are formed in the outer ends of the supporting lacing wire plates; ceramic gaskets are arranged on one sides of the inner walls of the inner side seam and the outer side seam of the elbow, high-temperature-resistant sticky tin foil paper is connected to the inner sides, the upper sides and the lower sides of the ceramic gaskets, and the ceramic gaskets and the high-temperature-resistant sticky tin foil paper connected with the ceramic gaskets are arranged in the clamping grooves of the corresponding supporting tiepiece plates; the supporting lacing wire plate, the high-temperature-resistant viscous tin foil paper, the ceramic gasket and the inner wall of the elbow are tightly attached in sequence; the supporting device has the advantages of being convenient to manufacture and good in supporting effect, machining efficiency can be improved, and follow-up machining quality can be guaranteed.

Description

Technical Field

[0001] The utility model relates to an elbow weld supporting device. Background Art

[0002] Various elbows currently used in the boiler or pressure vessel industry, such as 90° elbows in "L" type pressure vessels, 180° elbows in "U" type pressure vessels, 120° elbows in pressure pipes, and large diameter elbows with angles less than 90°, such as Figure 2 As shown, generally, steel plates are used to press the upper and lower semicircular arc plates and then weld them to form an elbow 1; if the performance of the original weld 13 does not meet the requirements after sampling and analysis after welding, the unqualified original weld 13 of the elbow needs to be replaced according to regulations; in this process, a support device needs to be set for the elbow weld to remove the original weld and subsequently re-weld; the existing elbow weld support device, such as Figure 1 As shown, several reinforcing plates 14 and 15 are welded at the inner and outer seams of the elbow 1 to fix the two semicircular arc elbows, and then a carbon arc air gouging is used to remove the seam of the outer wall of the elbow, and a grinding wheel is used to grind the groove of the seam to the welding requirements. Finally, manual welding is used to complete the seam welding, and the back side is cleaned and welded properly, and then the reinforcing plates 14 and 15 are removed. This weld support device is not only labor-intensive and inconvenient to manufacture, but also provides local weld support with poor support effect, which can easily cause deformation of thin-walled elbows and cause dimensional deviations, affecting subsequent processing quality. Summary of the Invention

[0003] The purpose of the utility model is to provide an elbow weld support device in view of the above-mentioned deficiencies in the prior art, which has the advantages of easy manufacture and good supporting effect, can improve processing efficiency and ensure subsequent processing quality.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an elbow weld support device, including an elbow composed of upper and lower semicircular arc plates welded together; it is characterized in that: a plurality of spiral buckles are provided in the elbow, each spiral buckle includes a threaded buckle, two screws connected to the two ends of the threaded buckle by threads, the outer ends of the two screws are fixedly connected to the supporting lacing plates, and the outer ends of the supporting lacing plates are provided with slots; segmented ceramic pads are provided on one side of the inner wall of the inner seam and the outer seam of the elbow, and high-temperature resistant adhesive tin foil is connected to the inner side and upper and lower sides of the ceramic pad, and the ceramic pad and the connected high-temperature resistant adhesive tin foil are placed in the corresponding slots of the supporting lacing plates; the supporting lacing plates, high-temperature resistant adhesive tin foil, ceramic pads and the inner wall of the elbow are tightly attached in sequence.

[0005] The segmented ceramic liner of the utility model is fitted with the inner and outer seams of the elbow along their entire length. Each segment of the ceramic liner is connected by high-temperature resistant adhesive tin foil. By rotating the two screws, the ceramic liner is pushed outward by the supporting rib plate to tighten the inner wall of the elbow. Since there are no welded parts, installation and removal are easy to operate. In addition, the full-length support of the inner wall has the advantages of easy production and good support effect, which can improve processing efficiency and ensure the quality of subsequent processing.

[0006] As a further improvement to the present invention, L-shaped flat steel bars are provided in the slots, and the high-temperature-resistant adhesive tin foil and ceramic liner are placed on the L-shaped flat steel bars in the corresponding slots. The length of the L-shaped flat steel bars along the circumference of the elbow is greater than the length of the supporting rib plate along the circumference of the elbow. The supporting rib plate can further enhance the holding effect of the ceramic liner on the inner wall through the L-shaped flat steel bars.

[0007] As a further improvement of the present invention, each spiral buckle is located in the radial direction of the elbow, which can further improve the supporting effect;

[0008] In summary, the utility model has the advantages of easy production and good supporting effect, which can improve processing efficiency and ensure subsequent processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is the front view of the existing elbow weld support device.

[0010] Figure 2 for Figure 1 AA cross-sectional view.

[0011] Figure 3 It is the front view of the embodiment of the utility model.

[0012] Figure 4 for Figure 3 BB cross-sectional view.

[0013] Figure 5 for Figure 4 Enlarged view of Y. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] like Figures 3 to 5As shown, an elbow weld support device of this embodiment includes an elbow 1 formed by welding two semicircular arc plates, an upper arc plate and a lower arc plate, a plurality of spiral buckles 2 are provided in the elbow 1, and each spiral buckle 2 is located in the radial direction of the elbow 1; each spiral buckle 2 includes a threaded buckle 3, two screws 4 and 5 connected to the two ends of the threaded buckle by threads, and the outer ends of the two screws 4 and 5 are welded and fixedly connected with a supporting rib plate 6, and the outer ends of the supporting rib plate 6 are provided with a slot, and an L-shaped flat steel bar 7 is provided in the slot, and the L-shaped flat steel bar 7 is provided in the elbow circular arc. The length on the circumference is greater than the length of the supporting lacing plate 6 on the circumference of the elbow; a segmented ceramic liner 10 is provided on one side of the inner wall of the inner seam 8 and the outer seam 9 of the elbow 1, and a high-temperature resistant adhesive tin foil 11 is connected to the inner side and the upper and lower sides of the ceramic liner 10. The ceramic liner 10 and the connected high-temperature resistant adhesive tin foil 11 are placed on the L-shaped flat steel bar 7 in the corresponding slot; the supporting lacing plate 6, the L-shaped flat steel bar 7, the high-temperature resistant adhesive tin foil 11, the ceramic liner 10 and the inner wall of the elbow are tightly attached in sequence.

[0016] The segmented ceramic liner 10 of the utility model can adapt to the arc inner wall of the elbow 1 and fit the inner seam 8 and the outer seam 9 along their entire length. Each segment of the ceramic liner 10 is connected by a high-temperature resistant adhesive tin foil 11, and its extended length is adjusted by rotating the two screws 4 and 5. The L-shaped flat steel bar 7 and the ceramic liner 10 are pushed outward by the supporting lacing plate 6 to tighten the inner wall of the elbow 1. Since there are no welded parts, installation and removal are easy to operate, and the full-length support of the inner wall is provided. The addition of the L-shaped flat steel bar 7 can further improve the tightening effect of the ceramic liner 10 on the inner wall, which has the advantages of convenient production and good supporting effect, can improve processing efficiency and ensure the quality of subsequent processing;

[0017] The above embodiments have been used for illustration, but it should be understood that the above embodiments are only used for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments.

Claims

1. An elbow weld support device, comprising an elbow formed by welding upper and lower semicircular arc plates; characterized in that: Several spiral buckles are provided in the elbow, and each spiral buckle includes a threaded buckle and two screws connected to the two ends of the threaded buckle by threads. The outer ends of the two screws are fixedly connected to the supporting lacing plates, and the outer ends of the supporting lacing plates are provided with slots; ceramic pads are provided on one side of the inner wall of the inner seam and the outer seam of the elbow, and high-temperature resistant sticky tin foil is connected to the inner side and the upper and lower sides of the ceramic pads. The ceramic pads and the connected high-temperature resistant sticky tin foils are placed in the slots of the corresponding supporting lacing plates; the supporting lacing plates, the high-temperature resistant sticky tin foil, the ceramic pads and the inner wall of the elbow are tightly attached in sequence.

2. The elbow weld support device according to claim 1, characterized in that: L-shaped flat steel bars are provided in the slots, and high-temperature resistant adhesive tin foil and ceramic pads are placed on the L-shaped flat steel bars in the corresponding slots. The length of the L-shaped flat steel bars on the circumference of the elbow is greater than the length of the supporting tie rods on the circumference of the elbow.

3. An elbow weld support device according to claim 1 or 2, characterized in that: Each spiral buckle is located in the radial direction of the elbow.

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