CN215488288U

CN215488288U - Manhole structure suitable for high-viscosity materials

Info

Publication number: CN215488288U
Application number: CN202121464700.8U
Authority: CN
Inventors: 高峥嵘; 李艳明; 阮艺平; 郏莹琰; 于巧玲; 雷娜
Original assignee: China Petroleum and Chemical Corp; Sinopec Engineering Group Co Ltd; Sinopec Shanghai Engineering Co Ltd
Current assignee: China Petroleum and Chemical Corp; Sinopec Engineering Group Co Ltd; Sinopec Shanghai Engineering Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-11
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a manhole structure suitable for high-viscosity materials, which comprises a manhole, a manhole core and a manhole cover, wherein the inclined manhole is arranged on the equipment wall in the normal direction; one uncovered end of the manhole core is fixedly connected with the manhole cover and forms a hollow cavity with the inner wall of the manhole cover; the manhole cover is internally provided with a heat medium inlet channel and a heat medium outlet channel which are opposite, and the heat medium inlet channel and the heat medium outlet channel are respectively communicated with the hollow cavity. The manhole structure has the core, is anti-blocking, can be subjected to heat tracing, eliminates heat transfer and flow dead zones of a manhole, solves the problem of operational risk of the manhole, is suitable for the manhole of equipment for high-viscosity materials, and can be popularized to the existing equipment for containing the high-viscosity materials.

Description

Manhole structure suitable for high-viscosity materials

Technical Field

The utility model relates to the technical field of chemical equipment, in particular to a manhole structure suitable for high-viscosity materials.

Background

In the production process of high viscosity material, thereby in order to prevent that the material from solidifying or viscosity is too high and influencing mobility, whole companion's heat is generally carried out to equipment, and the import and export pipeline of material also requires the companion's heat, considers that other trompils on the equipment do not do the companion's heat, in order to reduce the material and flow the not dead zone by the companion's heat in the interval, should reduce the trompil on the equipment as far as possible, especially big trompil. However, in order to implement the inspection and maintenance of the equipment, the equipment does need to be provided with a manhole, and the purpose is mainly to facilitate the periodic inspection of whether cracks, deformation, corrosion and the like occur in the use process of the equipment, the damage condition of the internal parts of the equipment, whether high-viscosity materials are left in the equipment, coked or solidified and the like.

The conventional manhole structure can not meet the requirement of high-viscosity materials, a heat transfer dead zone and a flow dead zone are formed in the opening of the conventional manhole (see figure 3), and a long-term unheated zone exists in equipment, so that the materials are heated unevenly, and the process use performance of the equipment is influenced finally. The conventional cored manhole (see fig. 4) can solve the flow dead zone, but the heat transfer dead zone still exists, and although the manhole is generally arranged above the liquid level, a small amount of liquid drops exist in the gas phase, can slowly gather because the liquid drops are not heated for a long time at the opening position of the manhole, and finally can be solidified on the surface of the manhole core sealing plate and the gap between the sealing plate and the manhole, so that the manhole can not be opened, and the equipment can not be subjected to internal inspection and maintenance.

In the conventional revolving cover structure (see fig. 1) of the manhole, when the manhole cover is opened and closed, the manhole cover (generally 100 kg-400 kg) naturally rotates downwards and falls under the action of the gravity center, so that the revolving cover structure has large impact force, is easy to hurt people and has safety risk.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above-mentioned problems of the prior art, and provides a manhole structure suitable for high-viscosity materials.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the manhole structure suitable for high-viscosity materials comprises a manhole, a manhole core and a manhole cover, wherein the inclined manhole is opened on the equipment wall in the normal direction; one uncovered end of the manhole core is fixedly connected with the manhole cover and forms a hollow cavity with the inner wall of the manhole cover; the manhole cover is internally provided with a heat medium inlet channel and a heat medium outlet channel which are opposite, and the heat medium inlet channel and the heat medium outlet channel are respectively communicated with the hollow cavity.

Further, the manhole structure further comprises: and the screw rod is fixedly connected with the outer wall of the manhole cover, and a nut matched with the screw rod is sleeved outside the screw rod.

Further, the nut is connected with the sleeve through a connecting plate, the sleeve is sleeved outside the fixed column, and one end of the fixed column is fixed on the outer wall of the equipment.

Furthermore, two ends of the fixing column are respectively provided with a limiting ring, so that the sleeve does not move in the vertical direction.

Further, the other end of the screw is fixedly connected with a hand wheel.

Furthermore, one end of the heat medium inlet channel is positioned on the outer wall of the manhole cover and is connected with a heat medium inlet pipe; and one end of the heat medium outlet channel is positioned on the outer wall of the manhole cover and is connected with a heat medium outlet pipe.

Further, the inner wall of the bottom of the manhole protrudes inwards to form a limit sealing part matched with the shape of the bottom of the manhole core.

Compared with the prior art, the utility model has the following advantages:

the manhole structure has the core, is anti-blocking, can be subjected to heat tracing, eliminates heat transfer and flow dead zones of a manhole, solves the problem of operational risk of the manhole, is suitable for the manhole of equipment for high-viscosity materials, and can be popularized to the existing equipment for containing the high-viscosity materials.

Drawings

Figure 1 is a schematic structural view of a manhole structure of the utility model;

FIG. 2 is a schematic perspective view of the manhole cover and screw mechanism of the present invention;

FIG. 3 is a schematic structural view of a conventional manhole;

figure 4 is a schematic structural view of a conventional cored manhole;

the reference signs are:

1-a manhole; 2-a manhole core; 3-a limit sealing part; 4-a heating medium inlet pipe; 5-a sleeve; 6-hand wheel; 7-a heating medium outlet pipe; 8-screw rod; 9-manhole cover; 10-a heating medium inlet channel; 11-heating medium outlet channel; 12-a nut; 13-a connecting plate; 14-fixed columns; 15-a limit ring.

Detailed Description

The present invention will be described in detail and specifically with reference to the following examples and drawings so as to provide a better understanding of the utility model, but the following examples do not limit the scope of the utility model.

Examples

Referring to fig. 1 to 2, the present embodiment provides a manhole structure suitable for high-viscosity materials, including a manhole 1, a manhole core 2 and a manhole cover 9, wherein the inclined manhole 1 is normally opened on a wall of an apparatus; one uncovered end of the manhole core 2 is fixedly connected with a manhole cover 9 and forms a hollow cavity with the inner wall of the manhole cover 9; the manhole cover 9 is internally provided with a heat medium inlet channel 10 and a heat medium outlet channel 11 which are opposite, and the heat medium inlet channel 10 and the heat medium outlet channel 11 are respectively communicated with the hollow cavity. One end of the heat medium inlet channel 10 is positioned on the outer wall of the manhole cover 9 and is connected with a heat medium inlet pipe 4; one end of the heat medium outlet channel 11 is positioned on the outer wall of the manhole cover 9 and is connected with a heat medium outlet pipe 7; the inner wall of the bottom of the manhole 1 protrudes inwards to form a limit sealing part 3 matched with the shape of the bottom of the manhole core 2.

The manhole structure of the utility model can eliminate the heat transfer dead zone at the hole opening of the manhole: manhole 1 is the normal direction for the trompil direction on the head of equipment, sets up manhole core 2 on manhole cover 9, and manhole trompil region has effectively been sealed to this manhole core structure, and because the trompil direction is the normal direction, the shrouding takes decurrent inclination, utilizes this inclination, and the liquid drop in the gas phase space can avoid remaining on the manhole core through the dead weight downflow.

The manhole structure of the utility model can eliminate the heat transfer dead zone at the hole opening of the manhole: inside relative heat medium inlet channel 10 and the heat medium outlet channel 11 of having seted up of manhole cover 9, above-mentioned heat medium inlet channel 10 and heat medium outlet channel 11 communicate with hollow chamber respectively, the heat medium can be full of the hollow chamber of whole manhole core 2 through heat medium import pipe 4 after, go out from heat medium outlet pipe 7, form a heat medium circulation with outside heat medium pipeline and heat medium pump, thereby make the liquid drop in the gas phase space still heated in manhole department, avoid the liquid drop to solidify, the mobility of material is kept.

The manhole structure can avoid that the manhole can not be opened due to material residue: the surface of the closing plate of the manhole core 2 is inclined downwards, and materials are difficult to form and remain on the surface of the closing plate. In case there is a small amount of residue, sealed at the spacing sealing 3 of tip through manhole core 2's shrouding and manhole 1, can regard as double insurance, prevent that the material from continuing to flow to in manhole core 2 and the gap of manhole 1, and manhole core 2 directly leads to the heat medium, and the residual material is through the dead weight down, can not remain for a long time or solidify to plug up the manhole and lead to the manhole can't open.

The manhole structure of the present invention further comprises: the screw 8 is fixedly connected with the outer wall of the manhole cover 9, and a nut 12 matched with the screw 8 is sleeved outside the screw 8; the nut 12 is connected with the sleeve 5 through a connecting plate 13, the sleeve 5 is sleeved outside the fixed column 14, and one end of the fixed column 14 is fixed on the outer wall of the equipment; two ends of the fixing column 14 are respectively provided with a limiting ring 15, so that the sleeve 5 does not move in the vertical direction and can only horizontally rotate along the central shaft of the fixing column 14; the other end of the screw 8 is fixedly connected with a hand wheel 6.

When the manhole cover 9 is detached, the hand wheel 6 is rotated to lift the manhole cover 9 and the manhole core 2, after the manhole core 2 can be integrally pulled out from the manhole, the sleeve 5 is horizontally rotated to horizontally move the manhole cover 9 and the manhole core 2 to the manhole to be completely opened, so that the manhole cover with the core can be opened, and the manhole cover is closed in a reverse operation of opening. The whole operation process is gentle and controllable, no heavy object is rotated and dropped, and the operation is safer, more convenient and faster.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims

1. A manhole structure suitable for high-viscosity materials, comprising a manhole (1), a manhole core (2) and a manhole cover (9), characterized in that the manhole (1) which is inclined opens normally to the equipment wall; one uncovered end of the manhole core (2) is fixedly connected with the manhole cover (9) and forms a hollow cavity together with the inner wall of the manhole cover (9); the manhole cover (9) is internally provided with a heat medium inlet channel (10) and a heat medium outlet channel (11) which are opposite to each other, and the heat medium inlet channel (10) and the heat medium outlet channel (11) are respectively communicated with the hollow cavity.

2. The manhole structure of claim 1, further comprising: and the screw rod (8) is fixedly connected with the outer wall of the manhole cover (9), and a nut (12) matched with the screw rod (8) is sleeved outside the screw rod (8).

3. Manhole structure according to claim 2, wherein the nut (12) is connected to the sleeve (5) by means of a connecting plate (13), the sleeve (5) being fitted over a fixing post (14), one end of the fixing post (14) being fixed to the outer wall of the equipment.

4. Manhole structure according to claim 3, wherein the fixing columns (14) are provided with a stop ring (15) at each end, so that the sleeves (5) do not move vertically.

5. Manhole structure according to claim 2, wherein a hand wheel (6) is fixedly connected to the other end of the screw (8).

6. Manhole structure according to claim 1, wherein one end of the heating medium inlet channel (10) is located on the outer wall of the manhole cover (9) and is connected with a heating medium inlet pipe (4); one end of the heat medium outlet channel (11) is positioned on the outer wall of the manhole cover (9) and is connected with a heat medium outlet pipe (7).

7. Manhole structure according to claim 1, wherein the inner wall of the bottom of the manhole (1) bulges inwards forming a limit seal (3) matching the shape of the bottom of the manhole core (2).