Assembly device for header end cover of waste heat boiler

Abstract

The utility model relates to a waste heat boiler header end cover assembling device, and belongs to the technical field of waste heat boiler header end cover assembling devices. The device comprises an annular frame, a base and a locking device, the annular frame can be sleeved outside a header barrel, the base and the locking device are fixed on the annular frame, the base is provided with a positioning groove capable of contacting with the outer wall of the header barrel, and the annular frame can be positioned through the positioning groove and locked on the header barrel through the locking device. The end cover locking device is used for locking the end cover in the axial direction of the header barrel body, and the end cover locking device is fixed on the base. The header end cover assembling device for the waste heat boiler is light in weight, an application site can be flexibly replaced at any time, limitation of the operation site to assembling work is reduced, accurate connection of the end cover and the header barrel can be rapidly achieved, working efficiency is improved, and welding quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to an assembly device for the end cover of a waste heat boiler header, belonging to the technical field of waste heat boiler header end cover assembly devices. Background Technology

[0002] A header is a pipe fitting used in boilers to mix the working fluid and ensure uniform heating. Typically, the furnace walls of industrial boilers are constructed from rows of pipes. However, boilers are large and complex, making it impossible to guarantee that all pipes absorb the same amount of heat; the heat absorption varies significantly between different sections. Installing a header allows the working fluid from each pipe to converge within the header and then distribute it to the next level of pipes. This reduces thermal deviation and optimizes the heat absorption and flow of the working fluid, boiler cooling, and boiler thermal efficiency. The header also connects different sections, ensuring smooth flow of the working fluid. To ensure the header is sealed, the pre-welding alignment directly determines whether the coaxiality of the end cover and the boiler body meets the standards, ultimately determining the quality of the weld. Application number 201620718065.4 discloses a header end cover assembly and positioning device, as shown in the attached figure. Figure 1 As shown, the assembly positioning device includes a connecting body that can be inserted into the header cylinder. The connecting body consists of a frame 3 and a positioning block connected to the frame. The positioning block has a V-shaped groove whose wall can contact the outer wall of the header cylinder. A locking device is connected to the frame to lock the connecting body onto the header cylinder. It can be seen that the above patent uses the positioning block to achieve coaxiality between the end cap and the header cylinder when they are joined. The disadvantage of this device is that, since the end cap is only placed in the V-shaped groove and not locked, it is difficult to ensure that the end cap remains coaxial with the header cylinder during spot welding. This can easily lead to problems such as uneven joints and misaligned bevels, thus affecting the welding quality of the header and the end cap. Summary of the Invention

[0003] In order to overcome the above-mentioned technical problems in the prior art, the purpose of this utility model is to provide a waste heat boiler header end cover assembly device that keeps the end cover and header cylinder coaxial during end cover assembly, has high working efficiency, and good welding quality.

[0004] The present invention addresses the aforementioned technical problems primarily through the following technical solution: The present invention includes an annular frame that can be fitted onto the outside of a header cylinder, a base fixed to the annular frame, and a locking device. The base has a positioning groove that can contact the outer wall of the header cylinder. The annular frame can be positioned through the positioning groove and locked to the header cylinder by the locking device. The present invention also includes an end cap locking device for axially locking the end cap to the header cylinder. The end cap locking device is fixed to the base.

[0005] Preferably, the cross-sectional shape of the positioning groove is one of V-shape, U-shape or arc shape.

[0006] As preferred, the locking device comprises screw holes arranged on the annular frame at positions opposite to the positioning slots, bolts screwed with the screw holes, and the bolts are adjustable in and out along the circumference of the annular frame.

[0007] As preferred, the end cover locking device comprises positioning supports protruding at the end of the base, the positioning supports are provided with positioning screw holes, and further comprises positioning screws screwed with the positioning screw holes, the positioning screws are adjustable in and out along the axial direction of the annular frame, and the end cover is clamped against the header cylinder by the positioning screws.

[0008] As preferred, further comprises adjusting bolts arranged on both sides of the base close to the positioning supports, the adjusting bolts are in contact with the outer wall of the end cover and can make fine adjustment on the radial deviation of the end cover.

[0009] As preferred, the base and the positioning supports are made of channel steel.

[0010] The utility model discloses simple structure has the following advantages:

[0011] The utility model discloses a kind of end cover locking devices, including annular frame, base with positioning slot and locking device, the locking device is arranged on the base, and the locking device is connected with the annular frame, and the locking device is connected with the end cover, the locking device is connected with the header cylinder, and the locking device is connected with the end cover and the header cylinder.

[0012] Further, the end cover locking device uses positioning screw hole and positioning screw, the positioning screw is adjustable in and out along the axial direction of the annular frame, after the end cover and the header cylinder are coaxially connected, the end cover is clamped by the positioning screw, and the end cover can be locked.

[0013] Further, adjusting bolt is arranged on both sides of the base close to the positioning support, when the end cover and the header cylinder are coaxially connected, the radial position of the end cover can be fine adjusted by the adjusting bolt, so that the coaxiality of the end cover and the header cylinder can be further improved, the butt joint bevel misalignment is eliminated, and welding quality is guaranteed.

[0014] Further, the base and the positioning support are made of channel steel, which is convenient to obtain materials, low in cost, light and small in size, can be replaced flexibly at any time, and reduces the limitation of operation site on the assembly device. BRIEF DESCRIPTION OF DRAWINGS

[0015] FIG. Figure 1 is a schematic view of prior art;

[0016] FIG. Figure 2 is a schematic view of a preferred embodiment of the utility model;

[0017] Figure Figure 3 is a figure Figure 2 the left view schematic diagram of the embodiment shown;

[0018] Figure Figure 4 is a figure Figure 2 the top view schematic diagram of the embodiment shown.

[0019] Reference signs: header cylinder 1; positioning groove 2; annular frame 3; base 4; locking device 5; screw hole 51; bolt 52; end cover locking device 6; positioning support 61; positioning screw hole 62; positioning screw rod 63; adjusting bolt 7; end cover 8. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be further specifically explained below by examples in combination with the drawings.

[0021] Example 1: as shown in Figures 1, 2 and 3, the utility model comprises an annular frame 3 which can be sleeved outside a header cylinder 1, a base 4 and a locking device 5 which are fixed to the annular frame 3, an end cover locking device 6 which is used for locking an end cover 8 in the axial direction of the header cylinder 1, and adjusting bolts 7 which are arranged on both sides of the base 4 close to positioning supports 61. Figure 2 Figure 3 Figure 4 The base 4 is fixedly connected with the annular frame 3 through two side surfaces thereof, and the base 4 has a positioning groove 2 which can contact the outer wall of the header cylinder 1, and the cross-sectional shape of the positioning groove 2 is U-shaped.

[0022] The locking device 5 is composed of screw holes 51 which are arranged on the annular frame 3 at positions opposite to the positioning groove 2, and bolts 52 which are threadedly connected with the screw holes 51, and the bolts 52 can be adjusted in the radial direction according to the size of the header cylinder 1, so that the annular frame 3 is locked to the header cylinder 1 through the bolts 52.

[0023] The end cover locking device 6 is fixed to the end part of the base 4 and comprises a positioning support 61 which is protruded at the end part of the base 4, positioning screw holes 62 which are arranged in the positioning support 61, and positioning screw rods 63 which are threadedly connected with the positioning screw holes 62 and can be adjusted in the axial direction of the annular frame 3, and the end cover 8 can be tightly pressed to the header cylinder 1 through the positioning screw rods 63.

[0024] The adjusting bolts 7 can contact the outer wall of the end cover 8 and finely adjust the radial deviation thereof.

[0025] The base 4 and the positioning support 61 are processed and manufactured by using channel steel.

[0026] The base 4 and the positioning support 61 are processed and manufactured by using channel steel.

[0027] ​​In use, the annular frame 3 is first placed on the header cylinder 1, with a gap between the bevel of the header cylinder 1 and the positioning bracket 61 to accommodate the end cap 8. Then, the bolt 52 at the top of the annular frame 3 is tightened so that the outer wall of the header cylinder 1 is tightly against the groove wall of the positioning groove 2. After that, the end cap 8 is placed in the positioning groove 2, and the positioning screw 63 is turned so that the end cap 8 is close to the bevel of the header cylinder 1, leaving a suitable welding gap. The center lines of the end cap 8 and the header cylinder 1 are observed to see if they are coaxial. If there is a deviation, it is adjusted by adjusting the adjusting bolts 7 on both sides of the base 4. Finally, the center positioning of the end cap 8 and the header cylinder 1 is achieved. Then, the end cap 8 and the header cylinder 1 are connected together by spot welding. After the annular frame 3 is removed, the end cap 8 and the header cylinder 1 are welded together. The annular frame 3 can be removed after the end cap and the header cylinder are docked and spot welded, and the next docking and assembly work of the end cap and the header cylinder can begin.

[0028] Of course, the above-described figures and embodiments are only for explaining and illustrating this utility model, and should not be construed as undue limitation of this utility model. All technical solutions obtained by those skilled in the art through equivalent adjustments and variations based on this invention fall within the protection scope of this invention.

Claims

1. A kind of waste heat boiler header end cover assembly device, including the annular frame (3) that can be covered in header cylinder (1) outside, fixed in the base (4) and locking device (5) of the annular frame (3), the base (4) has the positioning slot (2) that can be contacted with header cylinder (1) outer wall, the annular frame (3) can be positioned by the positioning slot (2) and be locked in the header cylinder (1) by the locking device (5), it is characterized in that, The end cover locking device (6) is fixed on the base (4).

2. The assembly device for the end cover of the header of a waste heat boiler according to claim 1, characterized in that, The cross section shape of the positioning groove (2) is one of V shape, U shape or circular arc shape.

3. A kind of waste heat boiler header end cover assembly device according to claim 1 or 2, with the characteristics that, The locking device (5) comprises screw holes (51) arranged on the annular frame (3) at positions opposite to the positioning groove (2), and bolts (52) screwed with the screw holes (51) and capable of being adjusted in and out along the circumference of the annular frame (3).

4. The assembly device for the end cover of the header of a waste heat boiler according to claim 1 or 2, characterized in that, The end cover locking device (6) comprises a positioning support (61) protruding from the end of the base (4), the positioning support (61) is provided with a positioning screw hole (62), and further comprises a positioning screw rod (63) screwed with the positioning screw hole (62) and capable of being adjusted in and out along the axial direction of the annular frame (3), the end cover (8) is clamped against the header cylinder (1) by the positioning screw rod (63).

5. The assembly device for the end cover of the header of a waste heat boiler according to claim 1 or 2, characterized in that, Further comprising adjusting bolts (7) arranged on both sides of the base (4) close to the positioning support (61), the adjusting bolts (7) can contact the outer wall of the end cover (8) and finely adjust the radial deviation thereof.

6. A kind of waste heat boiler header end cover assembly device according to claim 4, characterized in that, The base (4) and the positioning support (61) are made of channel steel.

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