Inspection hole for overhauling gasification furnace

Abstract

The utility model discloses an inspection hole for overhauling a gasification furnace. The inspection hole comprises a manhole cover which is circular, and a groove is formed in the bottom surface of the manhole cover; the connecting lug plates are symmetrically arranged on the two sides of the manhole cover and are fixed together with the manhole cover through welding; the handle is arranged above the manhole cover, and the handle and the manhole cover are fixed together through welding; the short section is located below the manhole cover, the upper end of the short section is inserted into the groove of the manhole cover, and the lower end of the short section is connected to the sealing partition plate; the flange is located on the outer side of the short section and connected with the upper end of the short section, and the upper end of the short section extends out of the upper surface of the flange; the pair of fixed support lugs are symmetrically arranged on the two sides of the flange and are fixed together with the flange; and a pair of connectors. The inspection hole is convenient for quickly overhauling the use condition of the internal parts of the upper and lower gasification furnace water-cooled walls, and is short in opening and closing sealing time, so that the overhauling time is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal chemical industry, and in particular to an inspection hole for overhauling a gasifier. BACKGROUND

[0002] At present, in the technical field of coal chemical industry, a gasifier is a core device of coal chemical industry and is used for converting coal into synthesis gas. The gasifier shell is usually divided into an upper chamber and a lower chamber, the upper chamber being a combustion chamber and the lower chamber being a quenching chamber (or a radiation waste boiler and a quenching chamber), wherein a sealing partition plate is usually arranged between the upper chamber and the lower chamber. In order to facilitate and expedite the overhaul of the inner parts in the upper chamber and the lower chamber, an inspection hole is arranged on the sealing partition plate, which usually adopts a complicated multi-group fastener connection structure. The operation of the structure is complicated, resulting in a long time for opening and closing the inspection hole. Therefore, it is necessary to design a new type of inspection hole for overhauling a gasifier so as to facilitate the rapid overhaul of the inner parts of the upper and lower water-cooled walls of the gasifier, and shorten the sealing time, thereby saving the overhaul time. SUMMARY

[0003] In view of the above technical problems, the present disclosure provides an inspection hole for overhauling a gasifier, characterized in that it comprises: a manhole cover, which is circular and is provided with a groove on the bottom surface thereof; a pair of connecting ear plates, which are symmetrically arranged on both sides of the manhole cover and are fixed together with the manhole cover by welding; a handle, which is arranged above the manhole cover and is fixed together with the manhole cover by welding; a short section, which is located below the manhole cover, the upper end of the short section is inserted into the groove of the manhole cover, and the lower end of the short section is connected to the sealing partition plate; a flange, which is located on the outside of the short section and is connected with the upper end of the short section and the upper end of the short section extends out of the upper surface of the flange; a pair of fixed lugs, which are symmetrically arranged on both sides of the flange and are fixed together with the flange; and a pair of connecting pieces, which are respectively fixed to the pair of fixed lugs by first fasteners, and the pair of connecting pieces connect the manhole cover and the flange together by second fasteners.

[0004] In a preferred embodiment, the lower end of the short section is fixed to the sealing partition plate by plug-in welding.

[0005] In a preferred embodiment, the groove of the manhole cover is circular.

[0006] In a preferred embodiment, the cross section of the short section is circular, and the inner diameter of the short section is the same as the inner diameter of the groove of the manhole cover.

[0007] In a preferred embodiment, the depth of the recess is 5mm.

[0008] In a preferred embodiment, the upper end of the stub extends 6mm above the upper surface of the flange.

[0009] In a preferred embodiment, the first fastener is a pin.

[0010] In a preferred embodiment, the second fastener is a nut.

[0011] In a preferred embodiment, the inner diameter of the stub is 450mm to 550mm.

[0012] Compared with the prior art, the present disclosure has the advantages of facilitating the rapid inspection of the internal components of the upper and lower chamber water-cooled walls, avoiding the corrosion of the internal components caused by dust and gas-liquid entering the combustion chamber without affecting the sealing of the upper and lower chambers, solving the problem of rapid inspection access, and having the characteristics of simple structure, convenient operation, flexible opening and closing, and time and labor saving. BRIEF DESCRIPTION OF DRAWINGS

[0013] The novel features of the application are set forth with particularity in the claims that follow. 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 of which:

[0014] Figure 1 a schematic view of an inspection hole for overhauling a gasification furnace according to an exemplary embodiment of the present disclosure; and

[0015] Figure 2 a top view of an inspection hole for overhauling a gasification furnace according to an exemplary embodiment of the present disclosure.

[0016] BRIEF DESCRIPTION OF DRAWINGS 1 - manhole cover, 2 - connecting lug plate, 3 - sealing partition, 4 - stub, 5 - flange, 6 - fixed lug, 7 - connecting piece, 8 - first fastener, 9 - second fastener, 10 - handle, 11 - combustion chamber, 12 - quenching chamber. DETAILED DESCRIPTION

[0017] Example embodiments of the present disclosure will be described below in greater detail with reference to the accompanying drawings. While example embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood, and so that the scope of the present disclosure can be completely conveyed to those skilled in the art. Nothing in the following detailed description is intended to imply any particular component, feature, or step is essential to the application. Those skilled in the art will understand that various features can be substituted or combined without departing from the scope of the present disclosure.

[0018] Figure 1 A schematic view of an access hole for overhauling a gasifier is shown according to an example embodiment of the present disclosure. An access hole for overhauling a gasifier can include a manhole cover 1, a pair of connecting lugs 2, a short section 4, a flange 5, a pair of fixed lugs 6, a handle 10, and a pair of connecting pieces 7. The gasifier shell can be divided into an upper chamber and a lower chamber, the upper chamber being a combustion chamber 11 and the lower chamber being a quench chamber 12, wherein a sealing partition 3 can be provided between the combustion chamber 11 and the quench chamber 12. The outer edge of the sealing partition 3 can be sealingly connected to the inner wall of the shell of the gasifier by welding. Figure 2A top view of an inspection hole for overhauling a gasifier is shown according to an exemplary embodiment of the present disclosure. The manhole cover 1 can be circular, and a groove can be provided on the bottom surface of the manhole cover 1. The pair of connecting lugs 2 can be symmetrically arranged on both sides of the manhole cover 1, and fixed together with the manhole cover 1 by welding. The handle 10 can be arranged above the manhole cover 1, and fixed together with the manhole cover 1 by welding. The short section 4 can be located below the manhole cover 1, and the upper end of the short section 4 can be inserted into the groove of the manhole cover 1. In a preferred embodiment, the groove of the manhole cover 1 is circular. The lower end of the short section 4 can be connected to the sealing partition plate 3. In a preferred embodiment, the lower end of the short section 4 can be fixed to the sealing partition plate 3 by plug welding. In other embodiments, the lower end of the short section 4 can be fixed to the sealing partition plate 3 by arc welding, gas welding, resistance welding, friction welding, or any type of welding deemed appropriate by those skilled in the art. In a preferred embodiment, the cross section of the short section 4 can be circular, and the inner diameter of the short section 4 can be the same as the inner diameter of the groove of the manhole cover 1. In other embodiments, the inner diameter of the short section 4 can be different from the inner diameter of the groove of the manhole cover 1, and the tolerance of the inner and outer circles can be 0.5-1 mm. In a preferred embodiment, the inner diameter Φ1 of the short section can be 450-550 mm. In other embodiments, the inner diameter Φ1 of the short section can be 450 mm, 455 mm, 460 mm, 465 mm, 470 mm, 475 mm, 480 mm, 485 mm, 490 mm, 495 mm, 500 mm, 505 mm, 510 mm, 515 mm, 520 mm, 525 mm, 530 mm, 535 mm, 540 mm, 545 mm, 550 mm, or any size deemed appropriate by those skilled in the art. In a preferred embodiment, the depth of the groove can be 5 mm. The groove can be circular, and the difference between the outer diameter and the inner diameter of the groove can be 12 mm. In other embodiments, the depth of the groove can be 4.0 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, 4.9 mm, 5.1 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.5 mm, 5.6 mm, 5.7 mm, 5.8 mm, 5.9 mm, or any depth deemed appropriate by those skilled in the art. The flange 5 can be located outside the short section 4, and connected with the upper end of the short section 4 and the upper end of the short section 4 can extend out of the upper surface of the flange 5. In a preferred embodiment, the upper end of the short section 4 can extend out of the upper surface of the flange 5 by 6 mm.The pair of fixed lugs 6 can be symmetrically arranged on both sides of the flange 5 and fixed together with the flange 5. The pair of connecting pieces 7 can be fixed to the pair of fixed lugs 6 respectively by first fasteners 8, and the pair of connecting pieces 7 can connect the manhole cover 1 and the flange 5 together by second fasteners 9. In a preferred embodiment, the connecting pieces 7 can be universal bolts. In other embodiments, the connecting pieces 7 can be threaded rods, screws, countersunk bolts, eye-bolt bolts or any type of connecting pieces deemed appropriate by those skilled in the art. In a preferred embodiment, the first fasteners 8 can be pins and the second fasteners 9 can be nuts. The universal bolts can be fixed on the fixed lugs 6 by the pins, and the split pins can be connected with the pins for further fixation. The second fasteners 9 can further include washers, and the universal bolts can tightly seal the manhole cover 1 and the flange 5 together by the washers and the nuts. In other embodiments, the first fasteners 8 or the second fasteners 9 can be screws, threaded rods, screws, pins, welding pins or any type of fasteners deemed appropriate by those skilled in the art.

[0019] Compared with the prior art, the technical scheme of the utility model is convenient for quickly overhauling the inner part use condition of the upper and lower chamber water cooling wall. The technical scheme of the utility model avoids the corrosion of dust and gas-liquid to the inner part caused by entering the combustion chamber without affecting the sealing of the upper and lower chamber. In addition, the technical scheme of the utility model also solves the problem of quick overhauling, and can have the characteristics of simple structure, convenient operation, flexible sealing opening and closing, and time and labor saving.

[0020] It should be understood that the systems in each of the embodiments provided in the utility model can be combined, modified and / or changed to form new technical schemes. These technical schemes should also be included in the scope of protection claimed by the utility model without creative labor.

[0021] A large number of specific examples are provided in the embodiments provided herein, and it should be understood that these examples are only for detailed description of the embodiments of the utility model and are not a limitation of the utility model. The embodiments in the utility model can be practiced without these specific examples. In some embodiments, the structures and / or technologies well known to those skilled in the art are not shown in detail, so as not to obscure the understanding of the utility model.

[0022] While preferred embodiments of the present application have been shown and described herein, it will be readily apparent to those skilled in the art that many changes, modifications and substitutions can be made thereto without departing from the application. It is intended that the application embrace all such changes, modifications and substitutions as fall within the scope of the appended claims.

Claims

1. An access hole for use in overhauling a gasifier, characterized in that, Comprising: a manhole cover which is circular and has a groove on its bottom surface; a pair of connecting lugs which are symmetrically arranged on both sides of the manhole cover and are fixed to the manhole cover by welding; a handle which is arranged above the manhole cover and is fixed to the manhole cover by welding; a nipple which is located below the manhole cover and has its upper end inserted into the groove of the manhole cover and its lower end connected to a sealing bulkhead; a flange which is located outside the nipple and is connected to the upper end of the nipple and has the upper end of the nipple extended out of its upper surface; a pair of fixing lugs which are symmetrically arranged on both sides of the flange and are fixed to the flange; and a pair of connectors which are respectively fixed to the pair of fixing lugs by first fasteners and connect the manhole cover and the flange together by second fasteners.

2. The hatch of claim 1, wherein wherein the lower end of the nipple is fixed to the sealing bulkhead by plug welding.

3. The hatch of claim 1, wherein wherein the groove of the manhole cover is circular.

4. The hatch of claim 3, wherein wherein the cross section of the nipple is circular and its inner diameter is the same as that of the groove of the manhole cover.

5. The hatch of claim 1, wherein wherein the depth of the groove is 5mm.

6. The hatch of claim 1, wherein wherein the upper end of the nipple is extended out of the upper surface of the flange by 6mm.

7. The hatch of claim 1, wherein wherein the first fastener is a pin.

8. The hatch of claim 1, wherein wherein the second fastener is a nut.

9. The hatch of claim 4, wherein, wherein the inner diameter of the nipple is 450mm to 550mm.

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