Adjustable inner part lifting lug and gasification furnace

Abstract

The present disclosure provides an adjustable inner part lifting lug and gasification furnace, which comprises a support, two oppositely arranged support plates, and corresponding one ends of the two support plates are fixed to the support, a containing space is formed between the two support plates, a lifting lug cantilever is embedded in the containing space and detachably connected with the support plates at one end, and a long circular hole is arranged at the other end of the lifting lug cantilever, a lifting ring bolt is arranged in the long circular hole, and a fastening nut is used to fixedly connect the lifting lug cantilever. Through the adjustable inner part lifting lug of the present disclosure, the professional ability requirement of the construction personnel can be low, and the professional welder does not need to be dispatched by the manufacturer, so that the operation and installation can be carried out, thereby, the processes of non-destructive testing after welding and heat treatment after welding are saved, the cost of on-site construction is saved accordingly, and the manufacturing cost of the equipment itself is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of petrochemical chemical equipment, and particularly relates to an adjustable inner part lifting lug and a gasification furnace. BACKGROUND

[0002] With the development of waste heat recovery gasification furnace technology, the traditional gasification furnace is provided with a radiation waste boiler section between the gasification section and the quenching section. The waste boiler coil needs to be hoisted on site after being installed in the gasification furnace shell. Since there are multiple water outlet pipes in the same plane for the steam-water two-phase flow, in order to ensure uniform steam-water flow in all pipe openings, the waste boiler coil has a high requirement for the levelness after being hoisted. Meanwhile, in order to prevent the occurrence of fluid short circuit when the synthesis gas flows upward, the distance between the coil and the inner wall of the shell should be kept equal in the circumferential direction, that is, the waste boiler coil and the gasification furnace shell should satisfy a certain coaxiality.

[0003] In the existing petrochemical chemical equipment, the inner part lifting lug is usually in the form of integral welding, which is usually composed of three parts: a backing plate, a cantilever, and a hook. The backing plate is directly welded on the inner wall of the equipment, the cantilever is welded and fixed on the backing plate, and the upper part of the hook is fixed with the cantilever by welding, and the lower part is used for suspending the inner part.

[0004] Although the integral welding form has the advantages of simple structure, low assembly difficulty, and on-site adjustment of position, in order not to affect the installation of the inner part, the cantilever usually needs to be welded between the cantilever and the backing plate after the inner part is hoisted into the cylinder. When the diameter of the equipment is large, 6-8 inner part lifting lugs are usually required to meet the requirements. At this time, the amount of on-site welding is large, and the welding difficulty is high due to the limited operation space after the equipment is erected, and the welding time is greatly lengthened, making it difficult to control the installation time. During the welding of the cantilever, the crane needs to be occupied for a long time, increasing the hoisting cost and making it difficult to implement.

[0005] In addition, after the waste boiler inner part is added to the gasification furnace shell with waste heat recovery, a support device for the waste boiler inner part needs to be arranged inside the gasification furnace shell. The support device should be able to withstand the weight of nearly 100 tons of the waste boiler inner part, and should not affect the hoisting of the waste boiler inner part, so as to facilitate the adjustment of the levelness and coaxiality of the waste boiler inner part during hoisting, so that the waste boiler inner part can meet the tolerance requirements after installation. When meeting the above requirements, the support part should also be considered for easy manufacturing, easy assembly with the waste boiler inner part on site, and shortening the waste boiler suspension time as much as possible. SUMMARY

[0006] In view of the above problems in the prior art, the present application provides an adjustable inner part lifting lug which can save the related processing after welding and quickly complete the installation.

[0007] To achieve the above-mentioned purpose, the technical scheme adopted by the embodiments of the present application is as follows:

[0008] In one aspect, the present application provides an adjustable inner part lifting lug, comprising: a support; two oppositely arranged support plates, and corresponding one end is fixed to the support respectively; the support plates form a receiving space between them; a lug cantilever, one end of which is embedded in the receiving space and forms a detachable connection with the support plate; the other end is provided with an oblong hole; a lifting ring bolt and a fastening nut, the lifting ring bolt is provided in the oblong hole, and the lug cantilever is fixedly connected by the fastening nut.

[0009] In some embodiments of the present disclosure, the cross-section of the lug cantilever is configured as an inverted U-shaped groove structure.

[0010] In some embodiments of the present disclosure, the two side edges of the lug cantilever are arranged obliquely; wherein the height near one end of the support is greater than or equal to the height away from one end of the support.

[0011] In some embodiments of the present disclosure, the adjustable inner part lifting lug further comprises a connecting plate, which is fixedly connected with the support and the lug cantilever at one end near the support respectively.

[0012] In some embodiments of the present disclosure, the oblong hole penetrates through the bottom of the lug cantilever at one end away from the support along the length direction of the lug cantilever.

[0013] In some embodiments of the present disclosure, the adjustable inner part lifting lug further comprises a connecting bolt, each of the support plates and the lug cantilever is provided with four threaded holes, and they are threadedly connected with each other by the connecting bolt.

[0014] In some embodiments of the present disclosure, the adjustable inner part lifting lug further comprises two reinforcing ribs, which are fixedly connected with the support and the support plate and are located on the other side of the support plate relative to the lug cantilever respectively.

[0015] In some embodiments of the present disclosure, the adjustable inner part lifting lug further comprises a gasket, which is located between the fastening nut and the lug cantilever.

[0016] In one aspect, the present application also provides a gasification furnace, which comprises a shell, a waste pot inner part and a plurality of the adjustable inner part lifting lugs, the waste pot inner part is detachably connected with the shell through the adjustable inner part lifting lugs, and the gasification furnace further comprises a waste pot inner part bolt, the waste pot inner part is threadedly connected with the lifting ring bolt through the waste pot inner part bolt.

[0017] In some embodiments of the present disclosure, the gasification furnace comprises 6-8 adjustable inner part lifting lugs.

[0018] In some embodiments of the present disclosure, the support and the inner wall of the shell are fixedly connected in a welded manner.

[0019] Compared with the prior art, the present application has the beneficial effects that:

[0020] Since the lug support and the lug arm are connected by bolts, and the lug arm is connected to the inner part of the waste pot by a lug bolt, the lug support can be assembled and welded inside the shell. Since the lug support itself has a short extension length, it will not affect the installation of the waste pot inner part. After the waste pot inner part is hoisted into the shell, the lug support and the lug arm are connected by bolts, which is not affected by environmental factors compared with the welded lug arm, has low professional requirements for construction personnel, and can be operated and installed by site personnel without the need for professional welders from the manufacturer to carry welding equipment to the site. The process of non-destructive testing after welding and heat treatment after welding is saved, the cost of on-site construction is saved, and the manufacturing cost of the equipment itself is reduced.

[0021] The bolt connection of the lug support and the lug arm can be operated by multiple people at the same time, so that the installation time of the inner lug is shortened from 30 days to 3 days. The shortening of the lug assembly time directly reduces the hoisting and suspension time of the waste pot, reduces the occupation time of the crane, and saves the hoisting cost.

[0022] The long round hole provided at the lug arm can realize the adjustment of the radial direction of the waste pot inner part, and the axial direction can be adjusted through the lug bolt and the locking nut, which reduces the adjustment difficulty of the waste pot inner part during the early installation, and even if the waste pot inner part is deformed after the equipment is operated, the tolerance requirement can still be met through the adjustment of the fastener during the later maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0023] In the drawings, which are not necessarily drawn to scale, like reference numerals can describe similar parts throughout the various views. Like reference numerals with letter suffixes can represent different instances of similar components. The drawings illustrate generally, by way of example, various embodiments discussed herein, and are not intended to limit the disclosure to the embodiments depicted. The same reference numerals in different drawings can identify the same or similar elements. Such embodiments are illustrative rather than restrictive, and the disclosure is not limited to the embodiments discussed in this application or illustrated in the drawings.

[0024] Figure 1 Structure diagram of the adjustable inner part lug of the embodiment of the present application;

[0025] Figure 2 Structure diagram of the adjustable inner part lug of the embodiment of the present application;

[0026] Figure 3 Structure diagram of part of the assembly of the adjustable inner part lug of the embodiment of the present application;

[0027] Figure 4 Structure diagram of part of the assembly of the adjustable inner part lug of the embodiment of the present application;

[0028] Figure 5 Front view of the hanger suspension arm of the adjustable inner hanger of the present application;

[0029] Figure 6 Side view of the hanger suspension arm of the adjustable inner hanger of the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 1 - support; 2 - connecting bolt; 3 - hanger suspension arm; 4 - spacer

[0032] 5 - hanger bolt 6 - fastening nut 7 - spent pot inner bolt; 8 - support plate

[0033] 9 - oblong hole; 10 - reinforcing rib; 11 - accommodation space; 12 - threaded hole

[0034] 13 - edge; 14 - connecting plate; 15 - spent pot inner DETAILED DESCRIPTION

[0035] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. Embodiments of the present disclosure are further described in detail below with reference to the accompanying drawings and specific embodiments, but are not limited to the present disclosure.

[0036] All terms used herein, including technical or scientific terms, have the same meanings as those understood by those having ordinary knowledge in the art to which the present disclosure pertains, unless otherwise defined. It should also be understood that terms such as those defined in a generally used dictionary should be interpreted to have meanings consistent with those in the context of relevant technology, and should not be interpreted in ideal or excessively formalized meanings, unless otherwise explicitly defined herein.

[0037] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification where appropriate.

[0038] In the existing petrochemical chemical equipment, the inner part of the waste boiler is hoisted in the hoisting process, and the existing technical means is used for hoisting. The levelness and coaxiality of the waste boiler inner part cannot meet the requirements. Therefore, the inner part lifting lug is usually installed in the form of integral welding. Although the integral welding form is simple in structure and low in assembly difficulty, since the welding structure needs to be welded on site, the inner part can be adjusted to meet the tolerance requirements first, then the welding position is determined, and then the welding between the cantilever and the backing plate is carried out. However, when the diameter of the equipment is large, the inner part lifting lug usually needs multiple ones to meet the requirements. At this time, the on-site welding amount is large, and in addition, after the equipment is erected, the operation space is limited, the welding difficulty is high, which will cause the problems of long process time, high hoisting cost and difficult implementation. Therefore, the technical scheme is provided as follows.

[0039] In one aspect, the present application provides an adjustable inner part lifting lug, which combines Figures 1 to 4 , and comprises: a support 1; two support plates 8 arranged oppositely and fixed to the support 1 at corresponding ends respectively; a containing space 11 is formed between the support plates 8, which can be a containing groove or a groove structure in this embodiment; a lifting lug cantilever 3, one end of which is embedded in the containing space 11 and forms a detachable connection with the support plate 8, in this embodiment, the section of the lifting lug cantilever 3 embedded in the containing space 11 matches the shape of the containing space 11, which facilitates quick embedding and subsequent installation; the other end of the lifting lug cantilever 3 is provided with an oblong hole 9; a lifting lug bolt 5 and a fastening nut 6, the lifting lug bolt 5 is provided through the oblong hole 9 and is fixedly connected to the lifting lug cantilever 3 through the fastening nut 6, in this embodiment, the position of the lifting lug bolt 5 relative to the lifting lug cantilever 3 is adjusted by rotating the fastening nuts 6 at both ends of the lifting lug bolt 5.

[0040] In one embodiment, in combination with Figure 2 , Figure 5 and Figure 6 , the cross section of the lifting lug cantilever 3 is configured as a U-shaped groove structure. Through this structure, the bending strength of the lifting lug cantilever 3 can be effectively improved, and the safety of its load bearing is improved. In this embodiment, the U-shaped groove structure is inverted, i.e. the opening part faces downward. Of course, the opening direction can be adjusted accordingly according to the actual situation on site, which is not limited in detail.

[0041] In one embodiment, in combination with Figure 1 , Figure 5 and Figure 6 , the two side edges 13 of the lifting lug cantilever 3 are inclinedly arranged; wherein the height near one end close to the support 1 is greater than or equal to the height away from one end away from the support 1. Through this arrangement, the bending strength of the lifting lug cantilever 3 is not affected, and the material cost is relatively reduced.

[0042] In one embodiment, in combination with Figure 5 andFigure 6 The adjustable internal lifting lug also includes a connecting plate 8, which is fixedly connected to the support 1 and the lifting lug cantilever 3 at one end near the support 1. The connecting plate 8 further effectively improves the strength of the lifting lug cantilever 3, increasing its load-bearing safety and reliability. Therefore, based on the specific description of the above embodiments, the structure of the lifting lug cantilever 3 can also be understood as follows: at one end near the support 1, it is constructed as a square cylinder, while at the end away from the support 1, it is constructed as an inverted U-shaped groove, and the side edge 13 of the inverted U-shaped groove slopes upwards towards the direction away from the support 1; the square cylinder and the inverted U-shaped groove together form the lifting lug cantilever 3 (see [specific structure details]). Figure 5 ).

[0043] In one embodiment, combined with Figure 1 , Figure 2 and Figure 5 The elongated hole 9 extends through the bottom of the cantilever arm 3 at the end furthest from the support 1 along its length. This arrangement allows for flexible adjustment of the position of the eye bolt 5 along the length of the cantilever arm 3.

[0044] In one embodiment, combined with Figure 1 , Figure 2 , Figure 3 and Figure 5 The adjustable internal lifting lug also includes connecting bolts 2. Each of the support plates 8 and the lifting lug cantilever 3 is provided with four threaded holes 12, which are threadedly connected to each other by the connecting bolts 2.

[0045] In one embodiment, combined with Figure 2 and Figure 4 The adjustable internal lifting lug also includes two reinforcing ribs 10, which are fixedly connected to the support 1 and the support plate 8, and are respectively located on the other side of the support plate 8 relative to the lifting lug cantilever 3. In this embodiment, the support plate 8 is square in shape, but it is not limited to this and can be adjusted according to the actual site conditions. In this embodiment, the reinforcing rib 10 can be set as a triangular or trapezoidal structure, wherein the end connected to the support 1 is constructed to match the surface shape of the support 1 so as to achieve a fixed connection with the base by welding.

[0046] In one embodiment, see Figure 1 The adjustable internal lifting lug also includes a washer 4, which is located between the fastening nut 6 and the lifting lug cantilever 3. By setting the washer 4, the stability and safety of the fixed connection between the lifting eye bolt 5, the fastening nut 6 and the lifting lug cantilever 3 can be improved.

[0047] On the one hand, see Figure 1The application also provides a gasification furnace (not shown in the figure), which comprises a shell (not shown in the figure), a waste pot inner part 15 and a plurality of adjustable inner part lifting lugs, the waste pot inner part 15 is detachably connected to the shell through the adjustable inner part lifting lugs, the gasification furnace further comprises a waste pot inner part bolt 7, the waste pot inner part 15 is threadedly connected with the lifting ring bolt 5 through the waste pot inner part bolt 7, thereby achieving fixed connection with the adjustable inner part lifting lug. Through the adjustable inner part lifting lug with the detachable function, after the completion of the connection between the waste pot inner part 15 and the lifting lug, the position of the lifting ring bolt 5 relative to the length direction of the vertical lifting lug cantilever 3 is adjusted by moving the lifting ring bolt 5 along the length direction of the long circular hole 9 on the lifting lug cantilever 3 and by rotating the fastening nut 6, thereby adjusting the horizontal angle of the waste pot inner part 15 and the coaxiality between the axis of the waste pot inner part 15 and the axis of the shell. The specific adjustment process is not described further here. In addition, in order to adjust the moving range of the lifting ring bolt 5 in the length direction of the long circular hole 9, the radial length and the diameter of the long circular hole 9 can be adjusted according to the site requirements, such as the size of the shell.

[0048] In an embodiment, the gasification furnace comprises 6-8 adjustable inner part lifting lugs. In the present embodiment, 6-8 adjustable inner part lifting lugs are only a preferred solution. The actual number of adjustable inner part lifting lugs needs to be further adjusted according to the weight of the waste pot inner part 15 to be lifted and the size of the shell to meet the start-up requirements.

[0049] In an embodiment, referring to Figure 2 The support 1 is fixedly connected to the inner wall of the shell in a welded manner. In the present embodiment, since the shell has a curvature, the support 1 needs to be further processed to have a surface matching the inner wall of the shell, so as to ensure the firmness, safety and reliability of the base after being fixed by welding or the like.

[0050] In order to fully understand the technical solutions of the embodiments of the application, the process of installing the waste pot inner part 15 in the shell is briefly described.

[0051] Firstly, the support 1 of the adjustable inner part lifting lug is fixed to the inner wall of the shell;

[0052] Secondly, after lifting the waste pot inner part 15, the waste pot inner part 15 is loaded into the accommodating cavity of the shell in the vertical state and maintained in the suspended state; at this time, the waste pot inner part bolt 7 threaded on the waste pot inner part 15 is threadedly connected with the lifting ring bolt 5, so that the shell is fixedly connected with the waste pot inner part 15 through the adjustable inner part lifting lug;

[0053] Thirdly, the position of the lifting ring bolt 5 distributed on the circumference of the shell is adjusted in the radial and longitudinal direction relative to the shell, and the horizontal position of the waste pot inner part 15 and whether its axis is coaxial with the axis of the shell are adjusted accordingly. The ideal result of the adjustment is horizontal and complete coaxial, of course, it is also acceptable within the preset tolerance range.

[0054] Furthermore, although illustrative embodiments are described herein, the scope includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of

[0055] The above description is intended to be illustrative, and not restrictive. For example, the above-described examples (or one or more aspects thereof) can be used in combination with each other. Other examples can be used in place of, or in combination with, the examples described above. In the above detailed description, various features are grouped together in one or more embodiments for the purpose of streamlining the disclosure. This should not be interpreted as intending that the disclosed features are essential to any claim. Thus, the following claims are hereby incorporated into the detailed description, by way of examples or embodiments, in which each claim can stand on its own as a separate embodiment, and can be combined with other claims, or with themselves, in various combinations or permutations. The scope of the application is to be determined solely by the appended claims, along with the full range of equivalents to which such claims are entitled.

Claims

1. An adjustable internal lifting lug, characterized in that, It includes: Support; Two support plates are arranged opposite each other, and one end of each plate is fixed to the support; an accommodating space is formed between the support plates; The cantilever arm has one end embedded in the accommodating space and detachably connected to the support plate; the other end is provided with an elongated hole. The lifting eye bolt and the fastening nut are provided. The lifting eye bolt passes through the elongated hole and is fixedly connected to the lifting lug cantilever by the fastening nut. The cross-sectional structure of the cantilever arm is an inverted U-shaped groove structure; It also includes a gasket located between the fastening nut and the cantilever lug.

2. The adjustable internal lifting lug according to claim 1, characterized in that, The two sides of the cantilever arm are inclined; wherein the height of the end closer to the support is greater than or equal to the height of the end farther from the support.

3. The adjustable internal lifting lug according to claim 1, characterized in that, It also includes a connecting plate, which is fixedly connected to the support and the cantilever lug at one end near the support.

4. The adjustable internal lifting lug according to claim 1, characterized in that, The elongated hole extends through the bottom of the cantilever arm along its length at the end furthest from the support.

5. The adjustable internal lifting lug according to claim 1, characterized in that, It also includes connecting bolts, and each of the support plates and the cantilever lugs has four threaded holes corresponding to each other, which are connected to each other by the connecting bolts.

6. The adjustable internal lifting lug according to claim 1, characterized in that, It also includes two reinforcing ribs, which are fixedly connected to the support and the support plate, and are respectively located on the other side of the support plate relative to the cantilever of the lug.

7. A gasifier, comprising a shell, a waste boiler inner component, and a plurality of adjustable inner component lifting lugs as described in any one of claims 1 to 6, wherein the waste boiler inner component is detachably connected to the shell via the adjustable inner component lifting lugs, characterized in that, The gasifier also includes waste pot internal component bolts, and the waste pot internal components are threadedly connected to the lifting eye bolts through the waste pot internal component bolts.

8. The gasifier according to claim 7, characterized in that, Includes 6-8 of the aforementioned adjustable internal lugs.

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