CN201848665U - Simple expansion ring device - Google Patents

Abstract

The utility model discloses a simple expansion ring device, belonging to the technical field of machining or processing of pressure vessels. The expansion ring device consists of an inner ring, an outer ring, a plurality of expansion rods and a U-shaped trough plate. A plurality of threaded through holes are uniformly distributed on the circumference of the inner ring. One end of the expansion rod, which is provided with threads, is connected with a threaded through hole of the inner ring, and one end of the expansion rod, which is provided with a step, is connected with a hole arranged at the bottom of the U-shaped trough plate in a rotary mode. The outer ring consists of a plurality of sections, and the inner circumference of each section of outer ring is fixedly connected corresponding to the top of the U-shaped trough plate respectively. The simple expansion ring device has a simple structure and a low manufacturing cost, is convenient to assemble and disassemble and is practical and effective. By using the expansion ring device, the welding deformation of a pressure vessel can be effectively reduced or eliminated.

Description

A simple expansion ring device

technical field

The utility model belongs to the technical field of processing or treatment of pressure vessels, and relates to an expansion device for vessel manufacture.

technical background

Pressure vessel is a kind of pressure-bearing equipment widely used in almost all industrial production and daily life. During the manufacturing process of pressure vessels, due to the influence of various factors, various quality hazards may occur, which will affect the safe use of pressure vessels, especially stainless steel pressure vessels, the use conditions are more complicated, and the medium is special, such as flammable , poisonous, corrosive, etc.; and there is a danger of explosion. Once an accident occurs, the consequences will be catastrophic, which will bring huge losses to the country, enterprises, and personal life and property. Therefore, it will be extremely important to ensure the manufacturing quality of stainless steel pressure vessels. However, due to the small heat transfer coefficient and large thermal expansion coefficient of stainless steel pressure vessels, the stainless steel pressure vessel also has a large shrinkage after welding, and the welding characteristics of stainless steel can easily lead to quality problems such as welding deformation during the manufacturing process. In order to reduce or eliminate this phenomenon, an expansion device is used in the container to provide auxiliary reinforcement to the inner weld and both sides of the weld, which can effectively eliminate the welding stress and welding deformation of the container. However, there is no practical and effective expansion device for pressure vessels that is simple in structure, convenient for loading and unloading. .

Contents of the invention

The purpose of the utility model is to provide a practical and effective simple ring expansion device with simple structure, convenient loading and unloading in order to meet the needs of stainless steel pressure vessel manufacturing.

In order to achieve the above object, the technical solution of the utility model is:

A simple expansion ring device is composed of an inner ring, an outer ring, several expansion rods and a U-shaped groove plate. A number of threaded through holes are evenly distributed on the circumferential surface of the inner ring; the expansion rods are provided with One end of the thread is connected to the threaded through hole of the inner ring, and one end of the expansion rod provided with a step is connected to the hole provided at the bottom of the U-shaped groove plate in a rotatable manner; the outer ring is composed of several sections of arc plates Composition, the inner circular surface of each segment of the arc plate is fixedly connected to the top of the U-shaped groove plate respectively.

The number of above-mentioned expansion rods is preferably 6.

The above-mentioned middle section of the expansion rod is a regular polygon.

The above-mentioned outer ring is made of 6 sections of arc plates.

A simple ring expanding device of the utility model has the advantages of simple structure, convenient assembly and disassembly, practical and effective, and low manufacturing cost. Using a simple expansion ring device can effectively reduce or eliminate the welding deformation of the pressure vessel.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the sectional view of Fig. 1;

In the figure: 1. Inner ring, 2. Expansion rod, 3. U-shaped groove plate, 4. Nut, 5. Outer ring.

Detailed ways

A kind of simple and easy ring expansion device of the present utility model is described further below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, a simple expansion ring device of the present utility model is composed of an inner ring 1, an outer ring 5, 6 expansion rods and 6 U-shaped groove plates. There are 6 threaded through holes uniformly opened on the circumferential surface; one end of the expansion rod 2 is provided with a thread to connect with the threaded hole of the inner ring 1, and the other end of the expansion rod 2 provided with a step passes through the U-shaped groove plate The holes provided at the bottom of the 3 are connected in a rotatable manner; the outer ring 5 is composed of 6 sections of arc plates, and the inner circular surface of each section of arc plates is fixedly connected to the top of the U-shaped groove plate 3 respectively. The middle section of the expansion rod 2 is processed into a quadrangular or hexagonal shape, so as to facilitate tool clamping, so that the expansion rod 2 can rotate forward and reverse around the center of the rod to achieve axial expansion and contraction to reach the inner diameter of the expansion container and remove the expansion rod. purpose of the device.

Claims (4)

1. simple and easy packing device is characterized in that: by inner ring (1), outer ring (5), some dilate bar (2) and U type frid (3) constitutes, and are evenly equipped with some tapped through holes on the periphery of described inner ring (1); Describedly dilate the end that bar (2) is provided with screw thread and be connected, describedly dilate the end that bar (2) is provided with step and rotatably be connected with the hole that U type frid (3) bottom is provided with inner ring (1) tapped through hole; Described outer ring (5) is made of the plurality of sections arc plate, and the inner headed face of every section arc plate corresponding U type frid (3) top respectively is fixedly connected.

2. simple and easy packing device according to claim 1 is characterized in that: the described bar (2) that dilates is 6.

3. simple and easy packing device according to claim 1 is characterized in that: described to dilate bar (2) interlude be regular polygon.

Expansion link according to claim 1 dilate device, it is characterized in that: described arc plate is 6 sections.

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