CN220718336U - Dismounting device of four-closed-ring self-sealing manhole door - Google Patents

Abstract

The utility model belongs to the technical field of disassembly and assembly of four-ring self-sealing manhole doors, and discloses a disassembly and assembly device of a four-ring self-sealing manhole door. The dismounting device comprises: the hoop fastening assembly is sleeved outside the manhole door; the bracket is arranged on the hoop fastening component; the sliding rail is connected with the bracket and is arranged in parallel with the axis direction of the manhole door; the sliding mechanism is connected with the sliding rail in a sliding way; the rotary telescopic boom is connected with the sliding mechanism, and the other end of the rotary telescopic boom is connected with the manhole door; the manhole door is fixed at the manhole position of the heater through the hoop fastening assembly. In this application, through setting up can be on the sliding mechanism of sliding on the slide rail, drive the manhole door and realize axial, horizontal direction removal, complicated dismouting step can simplify, has reduced operator's intensity of labour, and the operation is dismantled to the remote realization manhole door of operating personnel accessible simultaneously, and the security of dismouting is higher.

Description

Dismounting device of four-closed-ring self-sealing manhole door

Technical Field

The utility model belongs to the technical field of disassembly and assembly of four-ring self-sealing manhole doors, and particularly relates to a disassembly and assembly device of a four-ring self-sealing manhole door.

Background

Among the thermal power plant equipment, high-pressure and low-pressure heaters are indispensable important constituent equipment, and often are provided with manholes through which maintenance personnel can enter a pressure vessel for maintenance, cleaning and other operations. The manhole structure commonly used at present has the forms of built-in self-sealing manholes, four-closed ring self-sealing manholes, elliptic self-sealing manholes, flange forced sealing manholes and the like. For the four-closed ring self-sealing manhole, the sealing structure mainly comprises a holding ring, four-closed rings arranged in an inner annular groove of the manhole, a sealing gasket and a manhole cover, and in the overhaul process, the thickness and the weight of the manhole cover in the four-closed ring self-sealing manhole door are large because the pressure in a high-pressure heater is more than 20MPa, so that a scaffold erected by a crane is generally needed when the manhole cover is taken out, 4 people are needed to be mutually matched for about 4 hours when the manhole cover is overhauled, the manhole can be disassembled, time and labor are wasted, and the condition that the manhole cover accidentally falls down when the manhole cover is separated from the manhole in the actual disassembly process also happens, so that the personnel safety of operators is greatly threatened.

The Chinese patent with application number 2017101483898 discloses a special tool and a method for dismounting a high-pressure self-sealing manhole, wherein the special tool comprises a chain block, a cross beam for fixing the chain block and a stand column for supporting the cross beam, and is characterized in that one end of the cross beam is fixedly provided with a locating pin matched with a bolt hole for fixing a four-way ring on the circumference of the manhole, the upper end of the stand column for supporting the cross beam is fixedly provided with a sleeve, the chain block is mounted on the cross beam through a roller group, one end of a take-out rod is provided with threads matched with a threaded hole for mounting a suspender screw on a manhole sealing cover, and the middle part of the take-out rod is fixedly provided with a suspender matched with the chain block. According to the scheme, operators can disassemble the manhole at a long distance to a certain extent, but the disassembly can still be realized by mutually matching a plurality of operators, so that the operation is inconvenient.

Therefore, it is needed to provide a dismounting device for a four-closed-ring self-sealing manhole door of a high-pressure and low-pressure heater of a thermal power plant, which is convenient to dismount and has higher dismounting safety.

In view of this, the present application is specifically proposed.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and aims to provide the dismounting device for the four-closed-ring self-sealing manhole door, which can greatly shorten the dismounting time of the four-closed-ring self-sealing manhole door, reduce the dismounting difficulty and improve the dismounting safety.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that: four dismouting devices that close ring self sealss manhole door are applied to thermal power plant's high pressure, low pressure heater, include: the device comprises a hoop fastening assembly, a bracket, a sliding rail, a sliding mechanism and a rotary telescopic boom;

the hoop fastening component is sleeved outside the manhole door; the bracket is arranged on the hoop fastening component; one end of the sliding rail is connected with one end of the bracket, which is far away from the manhole door, the other end of the sliding rail extends along the direction far away from the heater, and the sliding rail is arranged in parallel with the axis direction of the manhole door; the sliding mechanism is configured to be in sliding connection with the sliding rail; one end of the rotary telescopic boom is connected with the sliding mechanism, and the other end of the rotary telescopic boom is connected with the side wall of the manhole door;

the manhole door is fixed at the manhole position of the heater through the hoop fastening assembly.

According to one embodiment of the utility model, the hoop fastening assembly comprises a first portion and a second portion which have the same curvature and are arc-shaped;

the first part and the second part are connected through a buckle.

According to one embodiment of the utility model, the sliding rail has an "I" shape or an inverted "T" shape in cross section perpendicular to the extending direction.

According to an embodiment of the present utility model, the sliding mechanism includes a roller that contacts the slide rail and is rotatable on the slide rail, and a connection portion to which a rotating shaft of the roller is fixed;

the connecting portion is close to the one end of gyro wheel is provided with the recess, the pivot is inserted and is established in the recess.

According to an embodiment of the utility model, wherein the rotary telescopic boom comprises a first boom, a housing and a second boom, the housing being a hollow cylinder, the first boom and the second boom being both partially disposed in the housing.

According to one embodiment of the utility model, the second suspender is fixedly connected with the shell, and an internal thread structure is arranged at one end of the shell, which is close to the first suspender;

and one end of the first suspender, which is close to the shell, is provided with an external thread structure matched with the internal thread structure.

According to an embodiment of the utility model, a limiting assembly for limiting the movement distance of the first suspender in the axial direction of the first suspender is arranged in the shell;

the limiting assembly comprises a first limiting assembly arranged at one end of the shell away from the second suspender, and the first limiting assembly is used for limiting the farthest distance between the first suspender and the second suspender.

According to an embodiment of the utility model, the limiting assembly further comprises a second limiting assembly disposed at an end of the housing remote from the first boom, the second limiting assembly being configured to limit a minimum distance between the first boom and the second boom.

According to an embodiment of the utility model, an end of the first boom away from the second boom is connected to the sliding mechanism, and an end of the second boom away from the first boom is detachably connected to the manhole door.

According to one embodiment of the utility model, the width of the sliding rail is 100mm, and the extension length of the sliding rail is 500mm.

After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects:

1) According to the utility model, by arranging the sliding mechanism capable of sliding on the sliding rail, the manhole door is driven to move in the axial direction and the horizontal direction, complex disassembly and assembly steps are simplified, an operator can realize the disassembly operation of the manhole door in a long distance, and the disassembly and assembly safety is higher;

2) According to the utility model, the hoop fastening assembly formed by the buckle connection is arranged, so that the manhole door can be firmly fixed in a manhole, the disassembly of the manhole door is convenient, the mounting position is provided for the dismounting device, and the function integration degree is higher.

3) In the utility model, the roller is fixed on the connecting part by arranging the rotating shaft. Due to the combined design, after one part is broken by fault, the part can be independently replaced, the whole replacement is not needed, and the maintenance cost is lower.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

FIG. 1 is a schematic diagram of a dismounting device for a four-ring self-sealing manhole door in an embodiment of the utility model;

FIG. 2 is a schematic diagram of a sliding mechanism according to an embodiment of the present utility model;

FIG. 3 is a schematic view of another sliding mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic view of another sliding mechanism according to an embodiment of the present utility model;

FIG. 5 is a schematic view of another sliding mechanism according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a rotating telescopic boom in an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a manhole door according to an embodiment of the present utility model.

The main elements in the figure are illustrated:

1. a manhole door; 2. the anchor ear fastening component; 3. a bracket; 4. a slide rail; 5. a sliding mechanism; 6. rotating the telescopic boom; 11. a manhole boss; 12. a sealing gasket; 13. a manhole cover; 14. a containment ring; 15. four-ring closure; 16. a gasket; 17. a slip-off prevention ring; 18. a connection assembly; 51. a roller; 52. a connection part; 53. a connection hole; 54. a connecting column; 61. a first boom; 62. a housing; 63. and a third boom.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 7, the dismounting device of the four-closed-ring self-sealing manhole door is applied to high-pressure and low-pressure heaters of a thermal power plant, and comprises: the anchor ear fastening component 2, the bracket 3, the sliding rail 4, the sliding mechanism 5 and the rotary telescopic boom 6;

the hoop fastening component 2 is sleeved outside the manhole door 1; the bracket 3 is arranged on the hoop fastening component 2; one end of the sliding rail 4 is connected with one end of the bracket 3, which is far away from the manhole door 1, the other end of the sliding rail 4 extends along the direction far away from the heater, and the sliding rail 4 is arranged in parallel with the axis direction of the manhole door 1; the sliding mechanism 5 is configured to be in sliding connection with the sliding rail 4; one end of the rotary telescopic boom 6 is connected with the sliding mechanism 5, and the other end of the rotary telescopic boom 6 is connected with the side wall of the manhole door 1;

wherein, manhole door 1 passes through staple bolt fastening assembly 2 fixes the manhole position of heater.

In this embodiment, the sliding mechanism 5 capable of sliding on the sliding rail 4 drives the manhole door 1 to move in the axial direction and the horizontal direction, so that complicated disassembly and assembly steps are simplified, an operator can realize the disassembly operation of the manhole door at a longer distance, and the disassembly and assembly safety is higher; even the condition that the manhole door falls off in the tea rest process, the damage to operators and the damage to the heater can be avoided.

In a specific implementation of this embodiment, referring to fig. 1, the lower end of the bracket 3 (the side close to the manhole door 1) is welded to the upper side of the hoop fastening component 2 (the side close to the sliding rail 4).

In a specific implementation manner of this embodiment, one end of the sliding rail 4 is fixedly connected to one end of the bracket 3 away from the manhole door 1, which may be detachably connected or non-detachably connected.

In another specific implementation of this embodiment, an end of the sliding rail 4 is connected to an end of the bracket 3 away from the manhole door 1 with an adjustable angle. Specifically, the support 3 is close to the one end of slide rail 4 is provided with and blocks protruding and hold the part stop bellied holding tank, block protruding inserting in the holding tank that corresponds to this inclination that blocks slide rail 4. Of course, all that is achieved is that the slide rail 4 is arranged in parallel (or approximately parallel, for example, the allowable error deviation is + -5 deg.) with the axial direction of the manhole door 1.

By adopting the scheme, through setting up slide rail 4 with the connection of support 3 adjustable angle, effectually avoided dismouting device (four closes ring self sealss manhole door's dismouting device) appear slide rail 4 by dragging the problem of slope after long-time use, guarantee dismouting device can be in the best operating condition all the time, and device reliability is higher.

In a specific implementation of this embodiment, referring to fig. 7, the manhole door 1 is mainly composed of a manhole boss 11, a sealing gasket 12, a manhole cover 13, a retaining ring 14, a tetrad ring 15, a gasket 16, a slip-off prevention ring 17, and a connection member 18. This design is a conventional choice design in the art and will not be described in detail herein.

In a specific implementation manner of this embodiment, the manhole door 1 may be manually detached, or may be driven by a motor (air cylinder), which is not the focus of this application, but is not limited in particular.

In a specific implementation manner of this embodiment, the hoop fastening assembly 2 includes a first portion and a second portion (not shown in the figures) with the same curvature and each having an arc shape;

the first part and the second part are connected through a buckle.

By adopting the scheme, through setting up the staple bolt fastening component 2 that the buckle formed of connecting, not only make manhole door 1 can firm fixed in the manhole, still made things convenient for the dismantlement of manhole door 1, still provided the mounted position for dismouting device, the function integrated level is higher.

In a specific implementation of this embodiment, the bracket 3 is arranged on the first portion. The width of the second portion (width here refers to axial length) is 100mm and the width of the first portion is 200mm.

In a specific implementation manner of this embodiment, referring to fig. 5, the cross section of the sliding rail 4 along the direction perpendicular to the extending direction is in an "h" shape or in an inverted "T" shape.

In a specific implementation manner of this embodiment, the sliding mechanism 5 includes a roller 51 that contacts the slide rail 4 and is rotatable on the slide rail 4, and a connection portion 52 to which a rotation shaft of the roller 51 is fixed;

the connecting portion 52 is provided with a groove at one end near the roller 51, and the rotating shaft is inserted into the groove.

By adopting the above scheme, the roller 51 is fixed on the connecting portion 52 by arranging the rotating shaft. Due to the combined design, after one part is broken by fault, the part can be independently replaced, the whole replacement is not needed, and the maintenance cost is lower.

The roller 51 rolls on the slide rail 4 to change the position of the manhole door in the horizontal direction.

In a specific implementation of this embodiment, the roller 51 is "dumbbell" shaped, with a large radius on both sides (relative to the axis) and a small radius in the middle. The sliding rail 4 is provided with a protruding guide rail in a shape of a Chinese character 'shan' at a position corresponding to the roller 51, and the roller 51 is provided corresponding to the guide rail of the sliding rail 4.

In another specific implementation manner of this embodiment, the roller 51 is provided with gear teeth (not shown in the drawing), and the position corresponding to the roller 51 of the sliding rail 4 is provided with protruding teeth corresponding to the gear teeth, and the gear teeth are in contact with the protruding teeth to form a rack-and-pinion structure, so that a better guiding effect is provided for the roller 51.

In a specific implementation of this embodiment, referring to fig. 2, the sliding mechanism 5 further includes a connection hole 53 disposed at an end of the connection portion 52 away from the roller 51. The rotary telescopic boom 6 is connected to the connection hole.

In a specific implementation manner of this embodiment, referring to fig. 3, the sliding mechanism 5 further includes a connection hole 53 disposed at an end of the connection portion 52 away from the roller 51, and the connection hole 53 is provided with a plurality of connection holes. The rotary telescopic boom 6 is connected to the connection hole. The rotary telescopic boom 6 may be connected to a plurality of connecting holes 53, or a plurality of rotary telescopic booms 6 may be provided, and the rotary telescopic booms 6 are connected to the connecting holes 53 in a one-to-one correspondence.

In a specific implementation manner of this embodiment, referring to fig. 4, the sliding mechanism 5 further includes a connection post 54 disposed at an end of the connection post 52 away from the roller 51. The connecting post 54 is a cylindrical structural member, and an internal thread (or external thread) structure is disposed at one end of the connecting post 54 near the rotary telescopic boom 6. The rotary telescopic boom 6 is connected with the connecting hole, and correspondingly, an external thread (or internal thread) structure is arranged at one end of the rotary telescopic boom 6 close to the sliding mechanism 5.

In a specific implementation manner of this embodiment, referring to fig. 5, the sliding mechanism 5 further includes a connection post 54 disposed at an end of the connection post 52 away from the roller 51, and the connection post 54 is provided with a plurality of connection posts. The connecting post 54 is columnar, and an internal thread (or external thread) structure is arranged at one end of the connecting post 54 close to the rotary telescopic boom 6. The rotary telescopic boom 6 is connected with the connecting hole, and correspondingly, an external thread (or internal thread) structure is arranged at one end of the rotary telescopic boom 6 close to the sliding mechanism 5. It is possible that one of the rotary telescopic booms 6 (referred to herein as the whole part) is connected to a plurality of connecting posts 54, or that a plurality of the rotary telescopic booms 6 are provided, and that the rotary telescopic booms 6 are connected to the connecting posts 54 one by one.

In a specific implementation of the present embodiment, referring to fig. 6, the rotary telescopic boom 6 comprises a first boom 61, a housing 62 and a second boom 63, said housing 62 being a hollow cylinder, said first boom 61 and said second boom 63 being both partially arranged in said housing 62.

In a specific implementation manner of this embodiment, the second boom 63 is fixedly connected to the housing 62, and an internal thread structure (not shown in the figure) is disposed at one end of the housing 62 near the first boom 61;

the first hanger rod 61 is provided with an external thread structure matched with the internal thread structure at one end close to the shell 62.

The first boom 61 is rotated (for example, clockwise rotation, with a screw direction) with respect to the housing 62, and the distance between the first boom 61 and the second boom 63 is shortened, that is, the manhole door 1 is lifted in the vertical direction by the attachment/detachment device.

In a specific implementation manner of this embodiment, the sliding mechanism 5 moves relative to the sliding rail 4 and the rotating telescopic boom 6 rotates, which may be implemented by manual operation or by setting a motor and an air cylinder.

In a specific implementation manner of this embodiment, a limiting assembly (not shown in the drawing) is disposed in the housing 62 to limit the distance that the first boom 61 moves in the axial direction of the housing;

the spacing assembly includes a first spacing assembly disposed on the housing 62 distal from the second boom 63 for limiting the furthest distance between the first boom 61 and the second boom 63.

In a specific implementation manner of this embodiment, the limiting assembly further includes a second limiting assembly disposed at an end of the housing 62 away from the first boom 61, where the second limiting assembly is configured to limit a minimum distance between the first boom 61 and the second boom 63.

In another specific implementation of this embodiment, the limiting assembly is not provided with the second limiting assembly, and the second boom 63 directly limits the distance between the first boom 61 and the first boom 61 (the length that the first boom 61 may extend between the housings 62).

In a specific implementation manner of this embodiment, referring to fig. 1, an end of the first boom 61 away from the second boom 63 is connected to the sliding mechanism 5, and an end of the second boom 63 away from the first boom 61 is detachably connected to the manhole door 1.

In a specific implementation manner of this embodiment, the width of the sliding rail 4 is 100mm, and the extending length of the sliding rail 4 is 500mm

The dismouting device of four ring closes ring self sealss manhole doors that this embodiment provided has following advantage:

1. the safety and reliability are realized, and equipment is not damaged by falling off and sulfur collision in the operation process; in the process of disassembly and assembly, as the distance between the overhauling personnel and the manhole is longer, the phenomenon of injury to operators caused by unexpected sliding of the sealing cover when the sealing cover is separated from the manhole can be effectively prevented;

2. the structure is simpler, and the manufacturing cost is low;

3. the operation is convenient, the device can be used repeatedly, and the device can be used for disassembling or installing manhole doors on other high-pressure and low-pressure heaters.

The manhole door dismounting device provided by the embodiment can reduce more than half of labor intensity, and the overhaul time is greatly shortened.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present utility model can be further combined or replaced by the equivalent embodiment without departing from the scope of the technical solution of the present utility model.

Claims (10)

1. Four dismouting devices that close ring self sealss manhole door are applied to thermal power plant's high pressure, low pressure heater, its characterized in that includes:

the hoop fastening assembly (2) is sleeved outside the manhole door (1);

the bracket (3) is arranged on the hoop fastening component (2);

the sliding rail (4), one end of the sliding rail (4) is connected with one end of the bracket (3) far away from the manhole door (1), the other end of the sliding rail (4) extends along the direction far away from the heater, and the sliding rail (4) and the axis direction of the manhole door (1) are arranged in parallel;

-a sliding mechanism (5), the sliding mechanism (5) being configured to be slidingly connected with the sliding rail (4);

a rotary telescopic boom (6), one end of the rotary telescopic boom (6) is connected with the sliding mechanism (5), and the other end of the rotary telescopic boom (6) is connected with the side wall of the manhole door (1);

the manhole door (1) is fixed at the manhole position of the heater through the hoop fastening component (2).

2. The dismounting device of the four-ring self-sealing manhole door according to claim 1, wherein the hoop fastening assembly (2) comprises a first part and a second part which have the same curvature and are arc-shaped;

the first part and the second part are connected through a buckle.

3. The dismounting device of the four-ring self-sealing manhole door according to claim 1, wherein the cross section of the sliding rail (4) along the extending direction is in an I shape or an inverted T shape.

4. A four-ring self-sealing manhole door dismounting device according to claim 3, characterized in that the sliding mechanism (5) comprises a roller (51) which is in contact with the sliding rail (4) and can rotate on the sliding rail (4) and a connecting part (52) which is fixedly provided with a rotating shaft of the roller (51);

the connecting part (52) is provided with a groove at one end close to the roller (51), and the rotating shaft is inserted into the groove.

5. The four-ring self-sealing manhole door dismounting device according to claim 1, wherein the rotary telescopic boom (6) comprises a first boom (61), a housing (62) and a second boom (63), the housing (62) is a hollow cylinder, and the first boom (61) and the second boom (63) are both partially arranged in the housing (62).

6. The dismounting device of the four-closed ring self-sealing manhole door according to claim 5, wherein the second suspender (63) is fixedly connected with the shell (62), and an internal thread structure is arranged at one end of the shell (62) close to the first suspender (61);

one end of the first suspender (61) close to the shell (62) is provided with an external thread structure matched with the internal thread structure.

7. The dismounting device of the four-ring self-sealing manhole door according to claim 6, wherein a limiting assembly for limiting the movement distance of the first suspender (61) in the axial direction of the housing (62) is arranged in the housing;

the limiting assembly comprises a first limiting assembly arranged at one end of the shell (62) away from the second suspender (63), and the first limiting assembly is used for limiting the farthest distance between the first suspender (61) and the second suspender (63).

8. The four-ring self-sealing manhole door dismounting device according to claim 7, wherein the limiting assembly further comprises a second limiting assembly arranged at one end of the housing (62) away from the first boom (61), and the second limiting assembly is used for limiting the minimum distance between the first boom (61) and the second boom (63).

9. The dismounting device for the four-ring self-sealing manhole door according to claim 5, wherein one end of the first suspender (61) far away from the second suspender (63) is connected with the sliding mechanism (5), and one end of the second suspender (63) far away from the first suspender (61) is detachably connected with the manhole door (1).

10. The dismounting device for a four-ring self-sealing manhole door according to any one of claims 1 to 9, wherein the width of the sliding rail (4) is 100mm, and the extension length of the sliding rail (4) is 500mm.