Height-adjustable preheating device

Abstract

The utility model provides a height-adjustable preheating device, which relates to the technical field of welding preheating, and comprises a base, the base comprises two preheating supports which are connected by a connecting beam and are arranged in parallel, a plurality of nozzle device mounting holes are arranged on the preheating supports, nozzles are mounted in the mounting holes, and the nozzle device is arranged on the base. The lower end of the nozzle is connected with a gas supply main pipeline, and the lower end of the gas supply main pipeline is provided with a combustion gas inlet and a compressed air inlet. The nozzle is of a split structure, nozzles of different sizes can be replaced according to the heights and radians of different products, tool loss is reduced, and the manufacturing period is shortened; and meanwhile, the gas inlet channel is divided into two parts, namely a combustion gas inlet channel and a compressed air inlet channel, so that the components of the mixed gas can be adjusted, the combustion ratio is optimal, the surface blackening after preheating is avoided, the preheating temperature reaches the standard, and the welding quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding preheating technical field especially relates to a height adjustable preheating device. BACKGROUND

[0002] When the thickness of the steel plate is greater than 30mm, there is often a requirement for preheating, that is, the welding site is heated to 100 DEG C before welding, and then welding is started. The preheating measure can effectively prevent the crack and deformation of welding. The flame heating is generally adopted at present, and when the thickness of the heated steel plate is above 100mm, a lot of time is needed to make the steel plate reach the specified temperature, and the energy is wasted greatly.

[0003] The original preheating tool burns gas into the main pipeline, and then distributes the gas to the nozzle to mix air and burn to preheat welding. The nozzle and the air inlet pipeline of the original structure are fixed structures, and different products need to be made corresponding devices for welding, and the preheating height cannot be adjusted. At the same time, there is only one natural gas inlet channel, the mixed gas combustion is insufficient, the gas composition cannot be adjusted, and there are problems such as blackening of the product surface caused by insufficient combustion and insufficient preheating temperature.

[0004] Therefore, the application studies a height adjustable preheating device. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a height adjustable preheating device, solve the problem that the preheating device of prior art cannot adjust height and mixed gas combustion is insufficient.

[0006] In order to achieve the above object, the technical scheme adopted by the utility model is:

[0007] A height adjustable preheating device, comprising a base, the base comprises two preheating supports arranged side by side connected by a connecting beam, a plurality of nozzle device mounting holes are arranged on the preheating support, a nozzle is mounted in the mounting hole, the lower end of the nozzle is connected with a gas supply main pipeline, and the lower end of the gas supply main pipeline is provided with a combustion gas inlet and a compressed air inlet.

[0008] Further, the preheating device is arranged below the preheating cylinder, and the preheating support is arranged in parallel with the cylinder.

[0009] Further, the lower end of the nozzle is connected with the gas supply main pipeline through a connecting pipe.

[0010] Further, the combustion gas inlet is connected with a natural gas inlet channel, and the compressed air inlet is connected with an air inlet channel.

[0011] Further, the height and size of the nozzle can be adjusted, and the nozzle can be mounted in the nozzle device mounting hole through a sleeve.

[0012] Furthermore, supports are evenly distributed on the inner surface of the nozzle mounting hole, and the bottom of the nozzle contacts the supports after being connected to the sleeve; the larger the size of the nozzle, the shorter the length of the supports.

[0013] The beneficial effects of this utility model are as follows:

[0014] The nozzle of this invention has a split structure, and nozzles of different sizes can be replaced according to the height and curvature of different products, saving tooling waste and manufacturing cycle; at the same time, the air intake channel is divided into two, namely the combustion gas intake channel and the compressed air intake channel, so that the composition of the mixed gas can be adjusted, the combustion ratio is optimal, the surface blackening after preheating is avoided, the preheating temperature reaches the standard, and the welding quality is improved. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the device structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the structure of this utility model.

[0018] Figure 3 for Figure 2 Schematic diagram of surface AA in the middle.

[0019] Figure 4 This is a schematic diagram of the nozzle device mounting hole in this utility model.

[0020] Explanation of icon numbers:

[0021] 1. Preheating support; 2. Nozzle mounting hole; 21. Support; 3. Nozzle; 4. Main gas supply pipeline; 5. Combustion gas inlet; 6. Compressed air inlet; 7. Preheating cylinder. Detailed Implementation

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0026] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] This utility model provides a technical solution: a height-adjustable preheating device, wherein the preheating device is disposed below the preheating cylinder, such as... Figures 1-4 As shown, the device includes a base, which includes two parallel preheating supports 1 connected by a connecting beam. The preheating supports 1 are arranged parallel to the cylinder body. The preheating supports 1 are provided with multiple nozzle mounting holes 2. Nozzles 3 are installed in the nozzle mounting holes 2. The lower end of the nozzle 3 is connected to the main gas supply pipeline 4 through a connecting pipe. The lower end of the main gas supply pipeline 4 is provided with a combustion gas inlet 5 and a compressed air inlet 6. The combustion gas inlet 5 is connected to the natural gas inlet, and the compressed air inlet 6 is connected to the air inlet.

[0030] The height and size of the nozzle 3 are adjustable, and different sizes of nozzle 3 can be replaced according to the height and curvature of different products. The nozzle 3 can be installed in the nozzle device mounting hole 2 through the sleeve. Supports 21 are evenly distributed on the inner surface of the nozzle device mounting hole 2. The bottom of the nozzle 3 is connected to the sleeve and then contacts the support 21. The larger the size of the nozzle 3, the shorter the length of the support 21.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A height adjustable preheating device, characterized in that, The application relates to a preheating device for a gas turbine, which comprises a base, the base comprising two parallel preheating supports (1) connected by a connecting beam, a plurality of nozzle device mounting holes (2) being arranged on the preheating supports (1), nozzles (3) being mounted in the nozzle device mounting holes (2), the lower ends of the nozzles (3) being connected with a gas supply main pipeline (4), the lower end of the gas supply main pipeline (4) being provided with a combustion gas inlet (5) and a compressed air inlet (6).

2. The height adjustable preheat device of claim 1, wherein, The preheating device is arranged below a preheating cylinder, and the preheating supports (1) are arranged in parallel with the cylinder.

3. The height adjustable preheat device of claim 1, wherein, The lower ends of the nozzles (3) are connected with the gas supply main pipeline (4) through a connecting pipe.

4. The height adjustable preheat device of claim 1, wherein, The combustion gas inlet (5) is connected with a natural gas inlet channel, and the compressed air inlet (6) is connected with an air inlet channel.

5. The height adjustable preheat device of claim 3, wherein, The height and size of the nozzles (3) can be adjusted, and the nozzles (3) can be mounted in the nozzle device mounting holes (2) through sleeves.

6. The height adjustable preheat device of claim 4, wherein, Supports (21) are uniformly distributed on the inner surfaces of the nozzle device mounting holes (2), the bottoms of the nozzles (3) are connected with sleeves and then are in contact with the supports (21); the larger the size of the nozzles (3) is, the shorter the length of the supports (21) is.

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