An assembly device and method for special-shaped evaporator tube bundle

Abstract

An assembly device and method for a special-shaped evaporator tube bundle, belonging to the technical field of waste incineration boilers, the present invention is to solve the problem of difficult assembly and positioning of special-shaped evaporator tube bundles and welding deformation. It includes a bottom frame, a vertical backrest and a bend support frame; a positioning beam is provided on the vertical backrest, and a plurality of bend support beams are arranged on the bend support frame; the vertical backrest is arranged in the middle of the bottom frame, and the left and right parts of the bottom frame are respectively provided with bend support frames. This device can assemble and position two special-shaped evaporator tube bundles at the same time. The membrane wall tube panel is fixed on the vertical backrest, which can play a role of anti-deformation. The bent end of the heating surface bend group is overlapped on the corresponding bend support beam, which can ensure that the heating surface bend group is horizontal and vertically welded with the membrane wall tube panel. This device can be used for the transportation and heat treatment support of the tube panel to prevent the deformation of the tube panel after the stress is released after the heat treatment, and can ensure the quality and efficiency of the assembly of the membrane wall tube panel and the heating surface bend.

Description

Technical Field

[0001] The invention belongs to the technical field of garbage incineration boilers, and in particular relates to an assembling device and method for a special-shaped evaporator tube bundle. Background Art

[0002] With the explosive development of the waste incineration boiler market, in order to improve the overall efficiency of waste incineration and heat transfer, different research directions have emerged in the technical route of waste incineration boilers, and the product structure of boilers has become more and more diversified. This type of boiler not only effectively solves the problem of urban incinerable waste treatment, but also the treatment method is energy-saving and environmentally friendly, and has broad development prospects.

[0003] The evaporator tube bundle is an important component of the waste incineration boiler. Its structure is a structure in which multiple groups of heated surface bent tubes and membrane wall tube panels are assembled. Since the evaporator tube bundle has many workpieces, its assembly positioning and prevention of welding deformation are difficult problems in the production process. Therefore, it is urgently needed to invent an assembly device that can simplify the assembly difficulty and effectively prevent welding deformation. Summary of the invention

[0004] The purpose of the present invention is to provide an assembly device and method for a special-shaped evaporator tube bundle to solve the problem of difficult assembly positioning and welding deformation of the special-shaped evaporator tube bundle. The technical solution adopted by the present invention is as follows:

[0005] An assembly device for a special-shaped evaporator tube bundle comprises a bottom frame, a vertical backrest and a bent tube support frame;

[0006] Positioning beams are respectively provided at the bottom of the front and rear ends of the vertical backrest, and the curved tube support frame includes two supporting columns arranged in front and in back, and the two supporting columns are connected by a plurality of curved tube supporting beams arranged at intervals in the vertical direction;

[0007] The vertical backrest is arranged in the middle of the bottom frame, and the left and right parts of the bottom frame are respectively provided with bent tube support frames, the first membrane wall tube panel of the first evaporator tube bundle is against the left and right sides of the vertical backrest, the first membrane wall tube panel is against the two positioning beams respectively, the first membrane wall tube panel is fixed to the vertical backrest by a plurality of U-shaped bolts, the bent ends of a plurality of first heating surface bent tube groups are against a plurality of bent tube support beams of the left end bent tube support frame one by one, and the open ends of a plurality of first heating surface bent tube groups are respectively vertically welded to a plurality of seamless tubes of the first membrane wall tube panel one by one;

[0008] The vertical backrest is abutted against the second membrane wall tube panel of the second evaporator tube bundle on the left and right, the second membrane wall tube panel is abutted against the two positioning beams up and down respectively, the second membrane wall tube panel is fixed to the vertical backrest by a plurality of U-shaped bolts, the bent ends of a plurality of second heating surface bent tube groups are abutted against a plurality of bent tube supporting beams of the right end bent tube support frame up and down in a one-to-one correspondence, and the open ends of a plurality of second heating surface bent tube groups are vertically welded to a plurality of seamless tubes of the second membrane wall tube panel in a one-to-one correspondence.

[0009] Furthermore, the bottom frame includes two long cross beams arranged in parallel on the left and right sides, the two long cross beams are connected by a number of longitudinal beams, the front end support column of the bent tube support frame is connected to the front end long cross beam, and the rear end support column of the bent tube support frame is connected to the rear end long cross beam.

[0010] Furthermore, both ends of the two long beams are respectively provided with lifting ears.

[0011] Furthermore, the long cross beam and the longitudinal beam are both No. 14 channel steel.

[0012] Furthermore, backrest columns are respectively provided at the four corners of the vertical backrest, the two backrest columns at the front end are connected to the long crossbeam at the front end, the two backrest columns at the rear end are connected to the long crossbeam at the rear end, the tops of the two backrest columns at the front end are connected by a reinforced crossbeam, the tops of the two backrest columns at the rear end are connected by a reinforced crossbeam, the tops of the two backrest columns on the left side are connected by a reinforced longitudinal beam, and the tops of the two backrest columns on the right side are connected by a reinforced longitudinal beam.

[0013] Furthermore, the backrest column is No. 14 channel steel.

[0014] Furthermore, the reinforcing beam is No. 14 channel steel.

[0015] Furthermore, the reinforcing longitudinal beam is No. 5 angle steel.

[0016] Furthermore, the bent pipe supporting beam is No. 5 angle steel.

[0017] The present invention also provides a method for assembling a special-shaped evaporator tube bundle, which is implemented based on the above-mentioned assembly device for a special-shaped evaporator tube bundle and includes the following steps:

[0018] Step 1: hoist the first membrane wall tube panel and the second membrane wall tube panel onto the positioning beam by a crane, and fix the first membrane wall tube panel and the second membrane wall tube panel onto the left and right end surfaces of the vertical backrest by a plurality of U-shaped bolts respectively;

[0019] Step 2: overlap the bent end of the first heating surface bend tube group on the corresponding bend tube support beam on the left side, assemble and weld several first heating surface bend tube groups with the first membrane wall tube panel from bottom to top, and perform flaw detection on each first heating surface bend tube group after assembly and welding to ensure that several first heating surface bend tube groups are perpendicular to the first membrane wall tube panel;

[0020] Step three: overlap the bent end of the second heating surface bend group on the corresponding bend support beam on the right, and assemble and weld several second heating surface bend groups with the second membrane wall tube screen from bottom to top. After each second heating surface bend group is assembled and welded, a flaw detection test is carried out to ensure that several second heating surface bend groups are perpendicular to the second membrane wall tube screen.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This assembly device can assemble and position two special-shaped evaporator tube bundles at the same time. The membrane wall tube panel is fixed to the left and right end surfaces of the vertical backrest by a plurality of U-shaped bolts, which can play a role in anti-deformation. The bent ends of the heating surface bent tube group are overlapped on the corresponding bent tube support beams, and a plurality of heating surface bent tube groups are respectively assembled and welded with the membrane wall tube panel from bottom to top, which can ensure that the heating surface bent tube group is horizontal and can ensure vertical welding with the membrane wall tube panel. This device can be used for the transportation and heat treatment support of the tube panel to prevent the deformation of the tube panel due to stress release after heat treatment, and can ensure the quality and efficiency of the assembly of the membrane wall tube panel and the heating surface bent tube, and this device can also be applied to the subsequent process schemes of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the present invention;

[0024] Figure 2 is a top view of the present invention;

[0025] Figure 3 It is a schematic diagram of the assembly and positioning of the present invention and two evaporator tube bundles;

[0026] Figure 4 yes Figure 3 Top view of the .

[0027] In the figure: 1-bottom frame, 11-long crossbeam, 12-lifting ear, 13-longitudinal beam, 2-bend pipe support frame, 21-support column, 22-bend pipe support crossbeam, 3-vertical backrest, 31-positioning crossbeam, 32-backrest column, 33-reinforced crossbeam, 34-reinforced longitudinal beam, 4-first evaporator tube bundle, 41-first membrane wall tube screen, 42-first heating surface bend pipe group, 5-second evaporator tube bundle, 51-second membrane wall tube screen, 52-second heating surface bend pipe group. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0029] The connection mentioned in the present invention is divided into fixed connection and detachable connection. The fixed connection is a non-detachable connection including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but not limited to conventional detachable methods such as bolt connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can be found in the existing connection methods to achieve the function, and those skilled in the art can choose according to their needs. For example: welding connection is selected for fixed connection, and bolt connection is selected for detachable connection.

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings. The following embodiments are provided to explain the present invention, but the present invention is not limited to the following embodiments.

[0031] Example 1: Figure 1-4 As shown, the evaporator tube bundle is a special-shaped structure assembled by multiple groups of heated surface bent tubes and membrane wall tube panels. The assembly device can assemble and position two special-shaped evaporator tube bundles at the same time. In order to clearly describe the assembly and matching relationship of the special-shaped evaporator tube bundles, the two evaporator tube bundles are divided into a first evaporator tube bundle 4 and a second evaporator tube bundle 5 in this embodiment.

[0032] The first evaporator tube bundle 4 includes a first membrane wall tube panel 41 and a plurality of first heating surface bend tube groups 42. The plurality of first heating surface bend tube groups 42 are respectively connected to the first membrane wall tube panel 41 on the left and right. The first membrane wall tube panel 41 includes a plurality of horizontally arranged seamless tubes. The plurality of seamless tubes are arranged at intervals in the vertical direction. Two adjacent seamless tubes are connected by a flat steel belt. The first heating surface bend tube group 42 includes a plurality of U-shaped bend tubes equidistantly arranged from the inside to the outside. The bending end of the first heating surface bend tube group 42 is arranged to the left, and the opening end of the first heating surface bend tube group 42 is arranged to the right. The plurality of first heating surface bend tube groups 42 are vertically arranged perpendicular to the membrane wall tube panel. The opening ends of the plurality of first heating surface bend tube groups 42 are respectively welded to the plurality of seamless tubes of the membrane wall tube panel one by one.

[0033] The second evaporator tube bundle 5 includes a second membrane wall tube panel 51 and a plurality of second heating surface bent tube groups 52 . The second evaporator tube bundle 5 is disposed bilaterally symmetrically with the first evaporator tube bundle 4 .

[0034] An assembly device for a special-shaped evaporator tube bundle comprises a bottom frame 1, a vertical backrest 3 and a bent tube support frame 2;

[0035] Positioning beams 31 are respectively provided at the bottom of the front and rear ends of the vertical backrest 3, the left end of the positioning beam 31 protrudes from the left end surface of the vertical backrest 3, and the right end of the positioning beam 31 protrudes from the right end surface of the vertical backrest 3. The curved tube support frame 2 includes two supporting columns 21 arranged in front and back, and the two supporting columns 21 are connected by a plurality of curved tube supporting beams 22 arranged at intervals in the vertical direction;

[0036] The vertical backrest 3 is arranged in the middle of the bottom frame 1, and the left and right parts of the bottom frame 1 are respectively provided with a bent tube support frame 2, the first membrane wall tube panel 41 of the first evaporator tube bundle 4 is against the left and right sides of the vertical backrest 3, the pre-processed flow hole of the first membrane wall tube panel 41 is arranged to the left, the seamless tubes at the bottom end of the first membrane wall tube panel 41 are respectively against the two positioning beams 31, the first membrane wall tube panel 41 is fixed to the vertical backrest 3 by a plurality of U-shaped bolts, the bent ends of a plurality of first heating surface bent tube groups 42 are against a plurality of bent tube support beams 22 of the left end bent tube support frame 2, and the open ends of a plurality of first heating surface bent tube groups 42 are respectively vertically welded against a plurality of seamless tubes of the first membrane wall tube panel 41 in a one-to-one correspondence;

[0037] The vertical backrest 3 abuts against the second membrane wall tube panel 51 of the second evaporator tube bundle 5 on the left and right, the pre-processed flow holes of the second membrane wall tube panel 51 are set to the right, the seamless tubes at the bottom end of the second membrane wall tube panel 51 abut against the two positioning beams 31 up and down respectively, the second membrane wall tube panel 51 is fixed to the vertical backrest 3 by a plurality of U-shaped bolts, the bent ends of a plurality of second heating surface bend tube groups 52 abut against a plurality of bend tube support beams 22 of the right end bend tube support frame 2 up and down in a one-to-one correspondence, and the open ends of a plurality of second heating surface bend tube groups 52 are vertically welded to a plurality of seamless tubes of the second membrane wall tube panel 51 in a one-to-one correspondence.

[0038] The bottom frame 1 includes two long cross beams 11 arranged parallel to each other on the left and right sides, and the two long cross beams 11 are connected by a plurality of longitudinal beams 13. The front end support column 21 of the bent pipe support frame 2 is connected to the front end long cross beam 11, and the rear end support column 21 of the bent pipe support frame 2 is connected to the rear end long cross beam 11.

[0039] Lifting ears 12 are respectively provided at both ends of the two long beams 11 .

[0040] The long cross beam 11 and the longitudinal beam 13 are both No. 14 channel steel.

[0041] Backrest columns 32 are respectively provided at the four corners of the vertical backrest 3, the two backrest columns 32 at the front end are connected to the long cross beam 11 at the front end, the two backrest columns 32 at the rear end are connected to the long cross beam 11 at the rear end, the tops of the two backrest columns 32 at the front end are connected by a reinforcing cross beam 33, the tops of the two backrest columns 32 at the rear end are connected by a reinforcing cross beam 33, the tops of the two backrest columns 32 on the left side are connected by a reinforcing longitudinal beam 34, and the tops of the two backrest columns 32 on the right side are connected by a reinforcing longitudinal beam 34.

[0042] The backrest column 32 is No. 14 channel steel.

[0043] The reinforcing cross beam 33 is No. 14 channel steel.

[0044] The reinforcing longitudinal beam 34 is a No. 5 angle steel.

[0045] The bent pipe supporting beam 22 is No. 5 angle steel.

[0046] Embodiment 2: A method for assembling a special-shaped evaporator tube bundle is implemented based on the assembly device for a special-shaped evaporator tube bundle described in Embodiment 1, and comprises the following steps:

[0047] Step 1: hoist the first membrane wall tube panel 41 and the second membrane wall tube panel 51 onto the positioning beam 31 by a crane, and fix the first membrane wall tube panel 41 and the second membrane wall tube panel 51 onto the left and right end surfaces of the vertical backrest 3 by a plurality of U-shaped bolts respectively;

[0048] Step 2: overlap the bent end of the first heating surface bend tube group 42 on the corresponding bend tube support beam 22 on the left side, assemble and weld several first heating surface bend tube groups 42 with the first membrane wall tube panel 41 from bottom to top, and perform flaw detection on each first heating surface bend tube group 42 after assembly and welding to ensure that several first heating surface bend tube groups 42 are vertical to the first membrane wall tube panel 41;

[0049] Step three: overlap the bent end of the second heating surface bend group 52 on the corresponding bend support beam 22 on the right side, and assemble and weld several second heating surface bend groups 52 with the second membrane wall tube panel 51 from bottom to top. After each second heating surface bend group 52 is assembled and welded, a flaw detection is performed to ensure that several second heating surface bend groups 52 are perpendicular to the second membrane wall tube panel 51.

[0050] The assembly device can assemble and position two special-shaped evaporator tube bundles at the same time, and the membrane wall tube panel and the heating surface bent tube are produced respectively. After the device is manufactured according to the technical solution, the first membrane wall tube panel 41 and the second membrane wall tube panel 51 are first hoisted on the positioning beam 31, and the first membrane wall tube panel 41 and the second membrane wall tube panel 51 are respectively fixed to the left and right end surfaces of the vertical backrest 3 by a plurality of U-shaped bolts, which play a role in anti-deformation.

[0051] Thereafter, the bent end of the first heating surface bend tube group 42 is overlapped on the corresponding bend tube support cross beam 22 on the left side, and a plurality of first heating surface bend tube groups 42 are respectively assembled and welded with the first membrane wall tube panel 41 from bottom to top, so as to ensure that the first heating surface bend tube group 42 is horizontal and vertically welded with the first membrane wall tube panel 41; the bent end of the second heating surface bend tube group 52 is overlapped on the corresponding bend tube support cross beam 22 on the right side, and a plurality of second heating surface bend tube groups 52 are respectively assembled and welded with the second membrane wall tube panel 51 from bottom to top, so as to ensure that the second heating surface bend tube group 52 is horizontal and vertically welded with the second membrane wall tube panel 51.

[0052] This device can be used for the transportation and heat treatment support of the tube panel to prevent the deformation of the tube panel after the stress release after the heat treatment. It can ensure the quality and efficiency of the assembly of the membrane wall tube panel and the heating surface elbow, and this device can also be applied to the subsequent process plan of similar products.

[0053] The above embodiments are merely illustrative of the present invention and do not limit its protection scope. Those skilled in the art may also make partial changes thereto, and as long as they do not exceed the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. An assembly device for a special-shaped evaporator tube bundle, characterized in that: It comprises a bottom frame (1), a vertical backrest (3) and a bent pipe support frame (2); Positioning beams (31) are respectively provided at the bottom of the front and rear ends of the vertical backrest (3); the curved tube support frame (2) comprises two supporting columns (21) arranged at the front and rear, and the two supporting columns (21) are connected by a plurality of curved tube supporting beams (22) arranged at intervals in the vertical direction; The vertical backrest (3) is arranged in the middle of the bottom frame (1), and the left and right parts of the bottom frame (1) are respectively provided with bent pipe support frames (2). The first membrane wall tube panel (41) of the first evaporator tube bundle (4) abuts against the left and right sides of the vertical backrest (3). The first membrane wall tube panel (41) abuts against two positioning beams (31) respectively. The first membrane wall tube panel (41) is fixed to the vertical backrest (3) by a plurality of U-shaped bolts. The bent ends of a plurality of first heating surface bent pipe groups (42) abut against a plurality of bent pipe support beams (22) of the left end bent pipe support frame (2) in a one-to-one correspondence in a one-to-one correspondence. The open ends of a plurality of first heating surface bent pipe groups (42) are respectively vertically welded to a plurality of seamless pipes of the first membrane wall tube panel (41) in a one-to-one correspondence. The vertical backrest (3) abuts against the second membrane wall tube panel (51) of the second evaporator tube bundle (5) on the left and right, the second membrane wall tube panel (51) abuts against the two positioning beams (31) on the top and bottom, the second membrane wall tube panel (51) is fixed to the vertical backrest (3) by a plurality of U-shaped bolts, the bent ends of the plurality of second heating surface bent tube groups (52) abut against the plurality of bent tube support beams (22) of the right end bent tube support frame (2) on the top and bottom in a one-to-one correspondence, and the open ends of the plurality of second heating surface bent tube groups (52) are vertically welded to the plurality of seamless tubes of the second membrane wall tube panel (51) on a one-to-one correspondence.

2. The assembly device for a special-shaped evaporator tube bundle according to claim 1, characterized in that: The bottom frame (1) comprises two long cross beams (11) arranged in parallel on the left and right sides, the two long cross beams (11) are connected via a plurality of longitudinal beams (13), the front end support column (21) of the bent pipe support frame (2) is connected to the front end long cross beam (11), and the rear end support column (21) of the bent pipe support frame (2) is connected to the rear end long cross beam (11).

3. The assembly device for a special-shaped evaporator tube bundle according to claim 2, characterized in that: Both ends of the two long cross beams (11) are respectively provided with lifting ears (12).

4. The assembly device for a special-shaped evaporator tube bundle according to claim 2, characterized in that: The long cross beam (11) and the longitudinal beam (13) are both No. 14 channel steel.

5. The assembly device for a special-shaped evaporator tube bundle according to claim 1, characterized in that: The four corners of the vertical backrest (3) are respectively provided with backrest columns (32), the two backrest columns (32) at the front end are connected to the long cross beam (11) at the front end, the two backrest columns (32) at the rear end are connected to the long cross beam (11) at the rear end, the tops of the two backrest columns (32) at the front end are connected by a reinforcing cross beam (33), the tops of the two backrest columns (32) at the rear end are connected by a reinforcing cross beam (33), the tops of the two backrest columns (32) on the left side are connected by a reinforcing longitudinal beam (34), and the tops of the two backrest columns (32) on the right side are connected by a reinforcing longitudinal beam (34).

6. The assembly device for a special-shaped evaporator tube bundle according to claim 5, characterized in that: The backrest column (32) is No. 14 channel steel.

7. The assembly device for a special-shaped evaporator tube bundle according to claim 5, characterized in that: The reinforcement beam (33) is No. 14 channel steel.

8. The assembly device for a special-shaped evaporator tube bundle according to claim 5, characterized in that: The reinforcing longitudinal beam (34) is a No. 5 angle steel.

9. An assembly device for a special-shaped evaporator tube bundle according to any one of claims 1 to 8, characterized in that: The bent pipe supporting cross beam (22) is a No. 5 angle steel.

10. A method for assembling a special-shaped evaporator tube bundle, implemented by relying on an assembly device for a special-shaped evaporator tube bundle according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: hoisting the first membrane wall tube panel (41) and the second membrane wall tube panel (51) onto the positioning beam (31) by a crane, and fixing the first membrane wall tube panel (41) and the second membrane wall tube panel (51) onto the left and right end surfaces of the vertical backrest (3) by a plurality of U-shaped bolts respectively; Step 2: overlap the bent end of the first heating surface bend tube group (42) on the corresponding bend tube support crossbeam (22) on the left side, assemble and weld a plurality of first heating surface bend tube groups (42) with the first membrane wall tube panel (41) from bottom to top, and perform flaw detection after each first heating surface bend tube group (42) is assembled and welded to ensure that the plurality of first heating surface bend tube groups (42) are perpendicular to the first membrane wall tube panel (41); Step 3: Overlap the bent end of the second heating surface bend tube group (52) on the corresponding bend tube support crossbeam (22) on the right side, and assemble and weld the plurality of second heating surface bend tube groups (52) to the second membrane wall tube panel (51) from bottom to top. After the assembly and welding of each second heating surface bend tube group (52) is completed, a flaw detection is performed to ensure that the plurality of second heating surface bend tube groups (52) are perpendicular to the second membrane wall tube panel (51).

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