CN217016078U

CN217016078U - Big or small manhole door in desulfurizing tower stirring district of thermal power factory

Info

Publication number: CN217016078U
Application number: CN202123349685.5U
Authority: CN
Inventors: 张富峰; 余子炎; 于航; 张冬雪; 胡侨
Original assignee: Guangdong Honghaiwan Power Generating Co ltd
Current assignee: Guangdong Honghaiwan Power Generating Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-22
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a large and small manhole door of a stirring area of a desulfurizing tower of a thermal power plant, which comprises a manhole door, a manhole small door and a hanging assembly, wherein the manhole door is provided with a plurality of hanging holes; the manhole gate comprises a large gate cover and a large connecting pipe, wherein the large gate cover is arranged on the large connecting pipe, the large connecting pipe is welded with a reinforcing ring, and the reinforcing ring is welded on an inner wall plate of the desulfurizing tower; the manhole wicket comprises a wicket cover and a small connecting pipe, the wicket cover is arranged on the small connecting pipe, and the small connecting pipe is arranged at the hole on the big wicket cover; two hanging components are adopted and are respectively arranged on the manhole large door and the manhole small door; when the unit is generally overhauled, the working period in the desulfurizing tower is short, no large-scale equipment or spare parts enter and exit, and under the condition, a manhole small door on the inner side of the stirring area at the bottom can be opened to carry out personnel entering and exiting in the internal inspection process; when large equipment such as a filter screen, a stirrer and the like needs to be disassembled, the outer manhole door can be opened completely; the method can save one day of construction period, save the material cost of the gasket and avoid the leakage of the manhole door when the unit is stopped and normally overhauled every time.

Description

Big or small manhole door in desulfurizing tower stirring district of thermal power factory

Technical Field

The utility model relates to the technical field of desulfurizing towers, in particular to a big and small manhole door of a stirring area of a desulfurizing tower of a thermal power plant.

Background

The flue gas desulfurization of a thermal power plant generally adopts wet desulfurization, the bottom of the desulfurization tower is generally a stirring area, and a stirrer and a slurry circulating pump inlet filter screen are arranged in the stirring area; a manhole door is arranged at the bottom of the desulfurization tower, the common diameter of the manhole door is 1.6-2.0 meters, the shutdown maintenance time of a unit is short under the common condition, the manhole door is opened only for personnel to enter and exit, and a gasket is generally damaged and not recycled after the manhole door is opened, so that the working time waste of a gasket sleeve is caused; after the overhaul is finished, the time consumption is long generally when the manhole door is closed, and the manhole door is not closed well and is easy to leak; therefore, the existing large-diameter manhole door has the problems of time consumption for opening and closing, high overhaul cost, easy leakage and the like.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a large and small manhole door of a stirring area of a desulfurizing tower of a thermal power plant, which comprises a manhole door, a manhole small door and a hanging assembly; the manhole door comprises a door cover and a large connecting pipe, wherein the door cover is arranged on the large connecting pipe in a covering mode, a reinforcing ring is welded on the large connecting pipe, and the reinforcing ring is welded on an inner wall plate of the desulfurizing tower; the manhole wicket comprises a wicket cover and a small connecting pipe, the wicket cover is covered on the small connecting pipe, and the small connecting pipe is arranged at an opening on the wicket cover; the two hanging assemblies are respectively arranged on the manhole door and the manhole wicket.

According to some embodiments of the utility model, the hanging assembly comprises a hanging rod, a support lug, a hanging hook and a hanging ring, wherein the hanging rod is divided into a horizontal rod and a vertical rod, the vertical rod is inserted into the support lug, and a cotter pin is inserted into the bottom end of the vertical rod; the tip of horizon bar has the lifting hook, the lifting hook in on the rings, rings weld in big door closure little door closure is last.

According to some embodiments of the utility model, the hook is provided with a thread, and the thread penetrates through the horizontal rod and is fixed by a nut.

According to some embodiments of the utility model, the vertical rod is sleeved with a retaining ring, and the retaining ring is arranged above the support lug.

According to some embodiments of the utility model, a large flange is welded on the large connecting pipe, the large flange is connected with a large door cover in a sealing manner through bolts, and a large gasket is clamped between the large flange and the large door cover.

According to some embodiments of the utility model, a small flange is welded on the small connecting pipe, the small flange is connected with a small door cover in a sealing manner through a bolt, and a small gasket is clamped between the small flange and the small door cover.

According to some embodiments of the utility model, the manhole cover has a diameter of 0.4 times the diameter of the manhole door.

The utility model has at least the following beneficial effects:

when the unit is generally overhauled, the working period in the desulfurizing tower is short, no large-scale equipment or spare parts enter and exit, and under the condition, a manhole small door on the inner side of the stirring area at the bottom can be opened to carry out personnel entering and exiting in the internal inspection process; when large equipment such as a filter screen, a stirrer and the like needs to be disassembled, the outer manhole door can be opened completely; the method can save a one-day construction period, save gasket material cost and stop leakage of a manhole door when the unit is stopped and normally overhauled every time.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an overall schematic diagram of an embodiment of the present invention;

fig. 2 is a side view of fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

Referring to fig. 1 to 2, the manhole door of the mixing area of the desulfurization tower of the thermal power plant comprises a manhole door 100, a manhole door 200 and a hanging assembly 300; the manhole gate 100 comprises a gate cover 110 and a large connecting pipe 120, wherein the gate cover 110 is covered on the large connecting pipe 120, a reinforcing ring 130 is welded on the large connecting pipe 120, and the reinforcing ring 130 is welded on an inner wall plate of the desulfurization tower; the manhole door 200 comprises a small door cover 210 and a small connecting pipe 220, wherein the small door cover 210 is covered on the small connecting pipe 220, and the small connecting pipe 220 is arranged at the opening position on the large door cover 110; two hanging components 300 are adopted, and the two hanging components 300 are respectively arranged on the manhole door 100 and the manhole door 200; when the unit is generally overhauled, the working period in the desulfurizing tower is short, no large-scale equipment or spare parts enter and exit, and under the condition, the manhole wicket 200 at the inner side of the stirring area at the bottom can be opened for the personnel to enter and exit in the internal inspection process; when large equipment such as a filter screen, a stirrer and the like needs to be disassembled, the outer manhole gate 100 can be opened completely; the method can save one day of construction period, save the material cost of the gasket and avoid the leakage of the manhole door when the unit is stopped and normally overhauled every time.

The hanging component 300 comprises a hanging rod 310, a support lug 320, a hanging hook 330 and a hanging ring 340, wherein the hanging rod 310 is divided into a horizontal rod 311 and a vertical rod 312, the vertical rod 312 is inserted in the support lug 320, the support lug 320 is fixed on the large connecting pipe 120 and the small connecting pipe 220, and a cotter pin 350 is inserted in the bottom end of the vertical rod 312; the end of the horizontal bar 311 is provided with a hook 330, the hook 330 is hooked on a hanging ring 340, and the hanging ring 340 is welded on the large door cover 110 and the small door cover 210.

The hook 330 is provided with a screw thread, the screw thread is fixed by a nut after passing through the horizontal rod 311, and the positions of the large door 110 and the small door 210 are corrected by adjusting the height of the nut on the screw thread.

The vertical rod 312 is sleeved with a retaining ring 360, and the retaining ring 360 is arranged above the support lug 320.

The large adapter tube 120 is welded with a large flange 140, the large flange 140 is hermetically connected with the large door cover 110 through bolts, a large gasket 150 is clamped between the large flange 140 and the large door cover 110, during maintenance, the bolts between the large flange 140 and the large door cover 110 are disassembled, then the hanger rod 310 rotates on the support lug 320, the large door cover 110 is opened sideways, the tube opening of the large adapter tube 120 is exposed, and the large gasket 150 is removed; the maintainer enters the maintenance operation through the large connecting pipe 120, and after the operation is finished, the large gasket 150 is arranged between the large door cover 110 and the large flange 140, and the bolt between the large door cover 110 and the large flange 140 is screwed.

A small flange 230 is welded on the small connecting pipe 220, the small flange 230 is hermetically connected with the small door cover 210 through bolts, and a small gasket 240 is clamped between the small flange 230 and the small door cover 210; during maintenance, the bolts between the small flange 230 and the small door cover 210 are disassembled, then the hanger rod 310 rotates on the support lug 320, the small door cover 210 is opened sideways, the pipe orifice of the small connecting pipe 220 is exposed, and the small gasket 240 is removed; the maintainer passes through the small connecting pipe 220 to perform maintenance operation, and then installs the small gasket 240 between the small door cover 210 and the small flange 230 after completing the operation, and screws the bolts between the small door cover 210 and the small flange 230.

In the present embodiment, the diameter of the manhole door 200 is 0.4 times the diameter of the manhole door 100.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. The utility model provides a thermal power factory desulfurizing tower stirring district size manhole door which characterized in that includes:

the manhole door (100) comprises a door cover (110) and a large connecting pipe (120), wherein the door cover (110) is covered on the large connecting pipe (120), a reinforcing ring (130) is welded on the large connecting pipe (120), and the reinforcing ring (130) is welded on an inner wall plate of the desulfurizing tower;

the manhole small door (200) comprises a small door cover (210) and a small connecting pipe (220), wherein the small door cover (210) is covered on the small connecting pipe (220), and the small connecting pipe (220) is arranged at an opening on the large door cover (110);

the hanging component (300) is two, and the hanging component (300) is arranged on the manhole door (100) and the manhole small door (200) respectively.

2. The stirring area size manhole door of the thermal power plant desulfurization tower according to claim 1, wherein the hanging assembly (300) comprises a hanging rod (310), a support lug (320), a hanging hook (330) and a hanging ring (340), the hanging rod (310) is divided into a horizontal rod (311) and a vertical rod (312), the vertical rod (312) is inserted into the support lug (320), and a cotter pin (350) is inserted into the bottom end of the vertical rod (312); there is lifting hook (330) at the tip of horizontal pole (311), lifting hook (330) hook in on rings (340), rings (340) weld in big door closure (110), on little door closure (210).

3. The stirring area size manhole door of the desulfurization tower of a thermal power plant as claimed in claim 2, wherein the lifting hook (330) is provided with a thread, and the thread passes through the horizontal rod (311) and is fixed by a nut.

4. The stirring area size manhole door of the desulfurization tower of a thermal power plant as claimed in claim 2, wherein the vertical rod (312) is sleeved with a retaining ring (360), and the retaining ring (360) is disposed above the support lug (320).

5. The stirring area large and small manhole door of the desulfurization tower of a thermal power plant as claimed in claim 1, wherein a large flange (140) is welded on the large connecting pipe (120), the large flange (140) is hermetically connected with the large door cover (110) through bolts, and a large gasket (150) is clamped between the large flange (140) and the large door cover (110).

6. The stirring area large and small manhole door of the desulfurization tower of a thermal power plant as claimed in claim 1, wherein a small flange (230) is welded on the small connecting pipe (220), the small flange (230) is hermetically connected with a small door cover (210) through bolts, and a small gasket (240) is clamped between the small flange (230) and the small door cover (210).

7. The mixing area-sized manhole door of a thermal power plant desulfurization tower according to claim 1, wherein the diameter of the manhole door (200) is 0.4 times the diameter of the manhole door (100).