CN205011808U - Flat local thermal treatment of bayonet takeover or heating frock - Google Patents

Abstract

The utility model provides a flat local thermal treatment of bayonet takeover or heating frock, a serial communication port, including electric infrared heating device and heat -insulating material, electric infrared heating device and heat -insulating material pass through fixing device and fix in the welding seam department that takes over, electric infrared heating unit bit in the welding seam side of taking over, heat -insulating material wraps up outside electric infrared heating device. The utility model discloses other work that can avoid the operation of spot welding in the past and extend have from this improved production efficiency, have reduced manufacturing cost, and convenient to use is through the fixed and dismantlement of bolt and nut mode to can use repeatedly, very the environmental protection.

Description

A kind of local heat treatment or heating tooling for flat insert type connection pipe

technical field

The utility model relates to a local heat treatment or heating tooling for a flat insert type connecting pipe, which is used for carrying out local heat treatment or heating on the connecting pipe.

Background technique

During the manufacture of pressure vessels, according to GB150-2011 and other relevant standards, some materials need to undergo stress relief heat treatment after welding. Due to the limitation of the product manufacturing sequence, the welds of some nozzles cannot be heat treated together with other cylinder welds. Therefore, local heat treatment for such nozzles is required.

Usually, spot welding is used to fix the heating device for local heat treatment near the welding seam of the product joint before local heat treatment, but this installation method by welding is inconvenient. Once the heat treatment is completed, the heating device needs to be removed and replaced. Grinding, smoothing and necessary non-destructive inspection of spot welded parts.

Contents of the invention

The purpose of this utility model is to provide a kind of tooling for local heat treatment or heating of a flat insert type connecting pipe, so as to avoid the previous spot welding operation and other work derived from it, improve production efficiency and reduce manufacturing cost.

In order to achieve the above purpose, the utility model provides a local heat treatment or heating tool for a flat insert type connecting pipe, which is characterized in that it includes an electric infrared heating device and a heat insulating material, and the electric infrared heating device and heat insulating material are fixed on the At the welding seam of the connecting pipe, the electric infrared heating device is located on the side of the welding seam of the connecting pipe, and the heat insulating material is wrapped outside the electric infrared heating device.

Preferably, the fixing device includes a connector, a first fixing frame and a second fixing frame, the connecting pipe, the electric infrared heating device and the heat insulating material are located between the first fixing frame and the second fixing frame, and the first fixing frame is supported on The end of the connecting pipe away from the weld seam, the connecting piece is arranged in the middle of the first fixing frame, the connecting pipe, the electric infrared heating device, the heat insulating material and the second fixing frame, one end of the connecting piece is connected with the second fixing frame, and the other end of the connecting piece It is threadedly connected with the nut, and the nut is arranged on the outside of the first fixing frame.

Preferably, the connecting piece is round steel or steel pipe with threads on the outer surface.

Preferably, the first fixing frame and the second fixing frame are made of steel plates or section steels, and are in the shape of a cross or a square.

Preferably, the electric infrared heating device is an annular or quasi-annular shape composed of one or more heating elements.

More preferably, the inner diameter of the electric infrared heating device is greater than 35 mm, the upper limit thereof is equal to the inner diameter of the connecting pipe, and the outer diameter is greater than 100 mm.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model can avoid spot welding operations in the past and other work extended therefrom, improves production efficiency, reduces manufacturing costs, is easy to use, is fixed and disassembled by bolts and nuts, can be used repeatedly, and is very environmentally friendly.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the local heat treatment or heating tooling of the flat insert type connection pipe.

detailed description

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

Example

As shown in Figure 1, it is a schematic structural diagram of the local heat treatment or heating tooling of the flat insertion type connecting pipe. The local heat treatment or heating tooling of the flat insertion type connecting pipe includes an electric infrared heating device 4 and a heat insulating material 5, and the electric infrared heating device 4 And the heat insulating material 5 is fixed on the welding seam of the takeover through the fixing device, the electric infrared heating device 4 is located at the side of the welding seam of the taking over, and the heat insulating material 5 is wrapped outside the electric infrared heating device 4 . The fixing device includes a connecting piece 1, a first fixing frame 3 and a second fixing frame 6, the connecting pipe, the electric infrared heating device 4 and the heat insulating material 5 are located between the first fixing frame 3 and the second fixing frame 6, the first The fixed frame 3 is supported on the end of the connecting pipe away from the weld seam, and the connecting piece 1 is arranged in the middle of the first fixed frame 3, the connecting pipe, the electric infrared heating device 4, the heat insulating material 5 and the second fixed frame 6, and one end of the connecting piece 1 is connected to the middle part of the second fixed frame 6. The second fixing frame 6 is connected, and the other end of the connecting piece 1 is threadedly connected with the nut 2 , and the nut 2 is arranged on the outside of the first fixing frame 3 .

The connecting piece 1 is a steel pipe with threads on the outer surface, and the outer diameter or wall thickness can be selected as long as it meets the load-bearing requirements and is easy to assemble and extract, and the specific size is not limited. In this embodiment, a round steel with an outer diameter of 20±1mm is used, and the length is 500±5mm. The thread length is not limited and can be determined according to the actual situation.

The nut 2 and the connector 1 are threadedly connected, and the first fixing frame 3 is locked and fixed after an appropriate distance is adjusted. The first fixed frame 3 is a support frame which is cut by steel plates and welded into a cross shape. The length, width and thickness of the steel plates can meet the support requirements, and the specific shape and size are not limited. The electric infrared heating device 4 is circular in shape and consists of multiple heating elements. The range of diameters is: the inner diameter is 110±1mm; the outer diameter is 400±5mm. The size of the heat insulating material 5 needs to be larger than the diameter of the electric infrared heating device 4 and meet the requirement of heat preservation. The second fixing frame 6 adopts section steel cutting and welding to form a "cross-shaped" supporting plate or bracket. Yes, the specific shape and size are not limited. The connecting piece 1 and the second fixing frame 6 are connected by welding, and the material is suggested to be carbon steel.

During use, the connecting piece 1 and the second fixing frame 6 together with the first fixing frame 3, the electric infrared heating device 4, and the heat insulating material 5 are fixed on the connecting pipe with the nut 2, and local heating or heat treatment is carried out after being fixed.

Claims (6)

1. A local heat treatment or heating tool for a flat insert type connecting pipe, characterized in that it includes an electric infrared heating device (4) and a heat insulating material (5), and the electric infrared heating device (4) and heat insulating material (5) pass through The fixing device is fixed at the welding seam of the connecting pipe, the electric infrared heating device (4) is located at the side of the welding seam of the connecting pipe, and the heat insulating material (5) is wrapped outside the electric infrared heating device (4). 2. The local heat treatment or heating tool for the flat insert type connection pipe according to claim 1, characterized in that, the fixing device includes a connecting piece (1), a first fixing frame (3) and a second fixing frame (6) , the connecting pipe, the electric infrared heating device (4) and the heat insulating material (5) are located between the first fixing frame (3) and the second fixing frame (6), and the first fixing frame (3) is supported on the connecting pipe away from the welding seam At one end, the connecting piece (1) is set in the middle of the first fixing frame (3), the connecting pipe, the electric infrared heating device (4), the heat insulating material (5) and the second fixing frame (6), and one end of the connecting piece (1) It is connected with the second fixing frame (6), and the other end of the connecting piece (1) is threadedly connected with the nut (2), and the nut (2) is arranged on the outside of the first fixing frame (3). 3. The tooling for local heat treatment or heating of flat insert type connecting pipes according to claim 2, characterized in that, the connecting piece (1) is a round steel or steel pipe with threads on the outer surface. 4. The local heat treatment or heating tool for the flat insert type connecting pipe as claimed in claim 2, characterized in that, the first fixing frame (3) and the second fixing frame (6) are made of steel plate or section steel, which are cross-shaped or Mi-shaped. 5. The local heat treatment or heating tool for the flat insert type connecting pipe according to claim 1, characterized in that, the electric infrared heating device (4) is a ring or ring-like shape composed of one or more heating elements . 6. The local heat treatment or heating tool of the flat insert type connecting pipe according to claim 5, characterized in that the inner diameter of the electric infrared heating device (4) is >35mm, the upper limit is equal to the inner diameter of the connecting pipe, and the outer diameter is >100mm.