CN116357968B

CN116357968B - Device for heating a connection piece of a pressure vessel

Info

Publication number: CN116357968B
Application number: CN202310626700.0A
Authority: CN
Inventors: 夏日; 李丹; 贺子龙; 高小斌
Original assignee: Shanxi Yangmei Chemical Industry Machinery Group Co Ltd
Current assignee: Shanxi Yangmei Chemical Industry Machinery Group Co Ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-08-29
Anticipated expiration: 2043-05-31
Also published as: CN116357968A

Abstract

The application relates to the technical field of welding of pressure vessels, and discloses equipment for heating a connecting pipe of a pressure vessel, which comprises the following components: a bracket assembly comprising: an intermediate pipe which is raised or lowered in a vertical direction to adjust a distance from the connection pipe of the pressure vessel; the support rod is perpendicular to the middle pipe and is fixed with the middle pipe; the support component is positioned at the center of the annular bottom plate and is fixed with the annular bottom plate through a plurality of support rods; a plurality of heating tube assemblies disposed above the annular base plate, the heating tube assemblies comprising: a fire tube comprising: the flame outlet nozzle is used for igniting the combustible gas and spraying flame outwards; a drainage hole positioned at the bottom of the flame nozzle; an inner flame enhancement pipe located in the drainage hole; a crescent support plate on which the fire tube stands; and the winch, the crescent-shaped supporting plate rotates around the winch. The device can heat the connecting pipes of the pressure vessels with different diameters, has a simple structure and improves the labor efficiency.

Description

Device for heating a connection piece of a pressure vessel

Technical Field

The present application relates generally to the technical field of welding of pressure vessels and, more particularly, to an apparatus for heating a connection tube of a pressure vessel.

Background

At present, for welding of the joint pipe welding line of most boiler pressure vessels and welding of joint pipes in other industries, acetylene or natural gas is generally adopted for heating when preheating is carried out before welding. However, acetylene or natural gas is adopted for heating, so that the workpiece is heated unevenly, and the purposes and effects of preheating and postweld heat treatment (dehydrogenation treatment) are not achieved. In addition, most of the existing welding preheating methods are to manufacture pipes with corresponding shapes according to the shapes of workpieces, and then to connect preheating burners on the pipes. Because the appearance of different work pieces is different, this kind of welding preheats frock and can only adapt to one kind of work piece, consequently, need make a large amount of preheating frock and satisfy the preheating demand of different work pieces, the cost is higher. Moreover, because the required preheating tools are more, the occupied space is larger when the preheating tools are stored. Aiming at the current situation, the application provides a preheating and local heat treatment device which is convenient and practical and saves the cost.

Disclosure of Invention

In view of the above technical problem, the present disclosure proposes an apparatus for heating a connection tube of a pressure vessel, characterized by comprising: a bracket assembly, the bracket assembly comprising: a middle pipe which can be lifted or lowered in a vertical direction to adjust a distance between the middle pipe and the connection pipe of the pressure vessel; a support rod perpendicular to the intermediate pipe and fixed with the intermediate pipe for supporting a nipple of the pressure vessel; the support assembly is positioned at the center of the annular bottom plate and is fixed with the annular bottom plate through a plurality of support rods; and a plurality of heating tube assemblies disposed above the annular base plate, the heating tube assemblies comprising: a fire tube, the fire tube comprising: a flame outlet for igniting a combustible gas and spraying a flame outwardly to heat a nipple of the pressure vessel; a drainage hole located at the bottom of the flame outlet nozzle through which the combustible gas is guided to the flame outlet nozzle; and an inner flame enhancement pipe located in the drainage hole for enhancing a flame using an air flow; the fire outlet pipe is vertically arranged on the crescent support plate; and the crescent-shaped supporting plate can rotate around the winch so as to heat the connecting pipes with different diameters.

In a preferred embodiment, the combustible gas is natural gas.

In a preferred embodiment, the combustible gas is oxyacetylene.

In a preferred embodiment, a plurality of heating tube assemblies are evenly distributed over the annular base plate.

In a preferred embodiment, the number of the plurality of heating tube assemblies is 4.

In a preferred embodiment, the combustible gas is supplied to the plurality of heating tube assemblies by means of a gas cylinder.

In a preferred embodiment, the number of the plurality of support rods is 3.

In a preferred embodiment, the bracket assembly is secured to the plurality of support bars by welding.

Compared with the prior art, the beneficial effects of the present disclosure are: the connecting pipe of the pressure vessel with different diameters can be heated, the structure is simple, and the labor efficiency is improved.

Drawings

The novel features of the application are set forth with particularity in the appended claims. A better understanding of the features and advantages of the present application will be obtained by reference to the following detailed description that sets forth illustrative embodiments, in which the principles of the application are utilized, and the accompanying drawings. The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the application. Also, like elements are denoted by like reference numerals throughout the drawings, wherein:

fig. 1 shows a schematic view of an apparatus for heating a nipple of a pressure vessel according to an exemplary embodiment of the present disclosure.

Fig. 2 illustrates a top view of an apparatus for heating a nipple of a pressure vessel according to an exemplary embodiment of the present disclosure.

FIG. 3 illustrates a schematic view of a heating tube assembly according to an exemplary embodiment of the present disclosure.

Reference numerals illustrate: 1. the device comprises a bracket component, 2, a middle pipe, 3, a supporting rod, 4, an annular bottom plate, 5, a heating pipe component, 6, a fire outlet pipe, 7, a crescent supporting plate, 8, a winch, 9, a fire outlet nozzle, 10, a drainage hole, 11 and an inner flame enhancement pipe.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Nothing in the following detailed description is intended to indicate that any particular component, feature, or step is essential to the application. Those of skill in the art will understand that various features or steps may be substituted for or combined with one another without departing from the scope of the disclosure.

Fig. 1 shows a schematic view of an apparatus for heating a nipple of a pressure vessel according to an exemplary embodiment of the present disclosure. The present disclosure proposes an apparatus for heating a nipple of a pressure vessel, which may include a bracket assembly 1, an annular base plate 4, and a heating tube assembly 5. The bracket assembly 1 may include: an intermediate pipe 2 which is capable of being raised or lowered in a vertical direction to adjust a distance between the intermediate pipe 2 and the connection pipe of the pressure vessel, that is, a distance between the flame and the connection pipe of the pressure vessel to be heated, thereby controlling a degree of heating the connection pipe of the pressure vessel (for example, heating or insulating the connection pipe of the pressure vessel); a support rod 3, said support rod 3 being perpendicular to said intermediate tube 2 and being fixed together with said intermediate tube 2 for supporting the connection tube of said pressure vessel.

Fig. 2 illustrates a top view of an apparatus for heating a nipple of a pressure vessel according to an exemplary embodiment of the present disclosure. The device may also comprise an annular bottom plate 4. The bracket assembly 1 may be located at the center of the annular base plate 4 and fixed with the annular base plate 4 by a plurality of support rods 3. In a preferred embodiment, the bracket assembly 1 may be fixed with the plurality of support bars 3 by welding. In some other embodiments, the bracket assembly 1 may be secured to the plurality of support bars 3 by spot welding, seam welding, projection welding, or welding methods deemed appropriate by those skilled in the art. In a preferred embodiment, the number of the plurality of support rods 3 may be 3. In some other embodiments, the number of the plurality of support rods 3 may be 3, 5, 6, 7, 8, 9 or any other number deemed appropriate by one skilled in the art. Fig. 3 shows a schematic view of a heating tube assembly 5 according to an exemplary embodiment of the present disclosure. The apparatus may also comprise a plurality of heating tube assemblies 5. A plurality of heating tube assemblies 5 may be placed above the annular bottom plate 4. In a preferred embodiment, a plurality of heating tube assemblies 5 may be evenly distributed over the annular base plate 4. In a preferred embodiment, the number of the plurality of heating tube assemblies 5 may be 4. In some other embodiments, the number of the plurality of heating tube assemblies 5 may be 3, 5, 6, 7, 8, 9, or any other number as deemed appropriate by one of ordinary skill in the art. The heating tube assembly 5 may include: the fire tube 6, the fire tube 6 may include: a flame outlet nozzle 9, which flame outlet nozzle 9 can be used to ignite a combustible gas and to spray a flame outwards to heat the connection pipe of the pressure vessel; a drainage hole 10, the drainage hole 10 may be located at the bottom of the flame nozzle 9, the combustible gas being guided through the drainage hole 10 to the flame nozzle 9; and an inner flame enhancement pipe 11, the inner flame enhancement pipe 11 may be located in the drainage hole 10 for enhancing flame with air flow. In a preferred embodiment, the combustible gas may be natural gas. In a preferred embodiment, the combustible gas may be oxyacetylene. In some other embodiments, the combustible gas may also be propane, propylene, liquefied petroleum gas, or any gas deemed appropriate by those skilled in the art. In a preferred embodiment, the combustible gas may be supplied to the plurality of heating tube assemblies 5 by means of a gas cylinder. The heating tube assembly 5 may further include a crescent-shaped support plate 7, and the fire tube 6 may stand on the crescent-shaped support plate 7. In some other embodiments, a handle may also be provided below the crescent-shaped support plate 7 for an operator to rotate the crescent-shaped support plate 7 and thereby rotate the fire tube 6 thereon to adjust the location of the fire. The heat pipe assembly 5 may further comprise a capstan 8, the crescent shaped support plate 7 may be rotatable around the capstan 8 to heat the connection pipes with different diameters, i.e. according to the connection pipes with different diameters to be heated, the crescent shaped support plate 7 may be rotated clockwise or anticlockwise to increase or decrease the distance from the burner 9 to the center of the annular bottom plate 4 to adapt to the different diameters of the connection pipes to be heated.

Compared with the prior art, the technical scheme of the disclosure can adjust at any time according to the connecting pipes of the pressure vessels with different diameters so as to heat the connecting pipes of the pressure vessels with different diameters, has a simple structure, reduces the running cost of equipment, improves the working efficiency and increases the economic benefit.

It should be understood that the systems and/or methods of the various embodiments provided in the present disclosure may be combined, modified and/or altered to form new solutions. Such solutions should also be included within the scope of the application as claimed without inventive effort.

Numerous specific examples are provided in the embodiments provided herein, with the understanding that these examples are set forth merely to illustrate embodiments of the application and are not intended to limit the application. Embodiments of the application may be practiced without these specific examples. Methods, structures and/or techniques well known to those skilled in the art have not been shown in detail in some embodiments so as not to obscure the understanding of this description.

While preferred embodiments of the present application have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous variations, changes, and substitutions will now occur to those skilled in the art without departing from the application. It should be understood that various alternatives to the embodiments of the application described herein are optionally employed in practicing the application. It is intended that the following claims define the scope of the application and that methods and structures within the scope of this application and their equivalents be covered thereby.

Claims

1. An apparatus for heating a nipple of a pressure vessel, comprising:

a bracket assembly, the bracket assembly comprising:

a middle pipe which can be lifted or lowered in a vertical direction to adjust a distance between the middle pipe and the connection pipe of the pressure vessel;

a support rod perpendicular to the intermediate pipe and fixed with the intermediate pipe for supporting a nipple of the pressure vessel;

the support assembly is positioned at the center of the annular bottom plate and is fixed with the annular bottom plate through a plurality of support rods; and

a plurality of heating tube assemblies, the heating tube assemblies being placed above the annular base plate, the heating tube assemblies comprising:

a fire tube, the fire tube comprising:

a flame outlet for igniting a combustible gas and spraying a flame outwardly to heat a nipple of the pressure vessel;

a drainage hole located at the bottom of the flame outlet nozzle through which the combustible gas is guided to the flame outlet nozzle; and

an inner flame enhancement pipe located in the drainage hole for enhancing flame with an air flow;

the fire outlet pipe is vertically arranged on the crescent support plate;

a capstan about which the crescent shaped support plate is rotatable to heat for different diameter nipples;

wherein the plurality of heating tube assemblies are uniformly distributed over the annular base plate.

2. The apparatus of claim 1, wherein the combustible gas is natural gas.

3. The apparatus of claim 1, wherein the combustible gas is oxyacetylene.

4. The apparatus of claim 1, wherein the number of the plurality of heating tube assemblies is 4.

5. The apparatus of claim 1, wherein the combustible gas is supplied to the plurality of heating tube assemblies by a cylinder.

6. The apparatus of claim 1, wherein the number of the plurality of support rods is 3.

7. The apparatus of claim 1, wherein the bracket assembly is secured to the plurality of support rods by welding.