CN111894881A - Online hot standby method for fan device of ethylene cracking furnace - Google Patents
Online hot standby method for fan device of ethylene cracking furnace Download PDFInfo
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- CN111894881A CN111894881A CN202010795315.5A CN202010795315A CN111894881A CN 111894881 A CN111894881 A CN 111894881A CN 202010795315 A CN202010795315 A CN 202010795315A CN 111894881 A CN111894881 A CN 111894881A
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- ethylene cracking
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- 238000005336 cracking Methods 0.000 title claims abstract description 109
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000005977 Ethylene Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 23
- 210000004177 elastic tissue Anatomy 0.000 claims description 18
- 230000006978 adaptation Effects 0.000 claims description 17
- 230000003044 adaptive effect Effects 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000009941 weaving Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000008439 repair process Effects 0.000 abstract description 4
- 238000011835 investigation Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 12
- 238000005728 strengthening Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 ethylene, propylene Chemical group 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses an on-line hot standby method of a fan device of an ethylene cracking furnace, belonging to the field of hot standby of fan devices of cracking furnaces, and the on-line hot standby method of the fan device of the ethylene cracking furnace is characterized in that a carrier of a fan system adopts a left wheel type turntable, the rotating mode is similar to the structure of a left wheel type pistol loading elastic disc, the structure required by rotation is simpler and more reliable, even if the fan device is used for a long time, the fault caused by the structure is not easy to occur, the fan system of the ethylene cracking furnace is not easy to cause the fault, the daily maintenance and hidden danger investigation of technicians are convenient to carry out, the quick replacement of the fan main body in a working position is easy to realize, the replacement, the maintenance and the repair of the fan main body can be realized without stopping the whole ethylene cracking furnace when the fan main body of the ethylene cracking furnace fails, the normal work of the ethylene cracking furnace is not easy to be, the production efficiency of the ethylene cracking furnace is not easily influenced.
Description
Technical Field
The invention relates to the field of hot standby of a fan of a cracking furnace, in particular to an online hot standby method of a fan device of an ethylene cracking furnace.
Background
The ethylene cracking furnace is used for processing cracking gas and is of the types of double radiation chambers, single radiation chambers and millisecond furnaces. The ethylene cracking furnace is the core equipment of an ethylene production device, and mainly has the functions of processing various raw materials such as natural gas, refinery gas, crude oil, naphtha and the like into cracking gas, providing the cracking gas for other ethylene devices, and finally processing the cracking gas into ethylene, propylene and various byproducts. The production capacity and the technical height of the ethylene cracking furnace directly determine the production scale, the yield and the product quality of the whole set of ethylene equipment, so that the ethylene cracking furnace plays a leading role in the ethylene production equipment and even the whole set of petrochemical production.
In a broad sense, the hot standby is another term of high availability application of the server, in a narrow sense, the dual hot standby refers to the hot standby based on two servers in a high availability system, and the term of extending the hot standby again can refer to the hot standby exchange between two or more structures with similar functions in a mechanical range, so that the replacement and rotation of some structures in the machine are realized on the premise of not influencing the integral work of the machine.
In the normal use process of ethylene cracking furnace, need the fan to continuously to the gas of blowing in the ethylene cracking furnace in order to guarantee the normal clear of reaction in the ethylene cracking furnace, current ethylene cracking furnace is a stove fan usually, in case the fan goes wrong and needs the family to shut down the ethylene cracking furnace completely usually, influences the normal work of ethylene cracking furnace, influences the production efficiency of ethylene cracking furnace.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an on-line hot standby method for a fan device of an ethylene cracking furnace, which can realize that the whole ethylene cracking furnace does not need to be shut down when the fan device of the ethylene cracking furnace breaks down, the normal work of the ethylene cracking furnace is not easily influenced, and the production efficiency of the ethylene cracking furnace is not easily influenced.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An on-line hot standby method for a fan device of an ethylene cracking furnace mainly comprises the following steps:
s1, monitoring a fan, namely setting the fan for ventilating the ethylene cracking furnace as a working position fan, and monitoring the rotating speed and the working temperature of the working position fan in real time by using a sensor loaded in the fan;
s2, replacing the fan, and when the working time of the fan reaches a preset standard or the rotating speed of the fan does not reach the preset standard for a long time, replacing the fan at the working position in the state that the whole ethylene cracking furnace is not stopped, and arranging technicians to maintain and maintain the fan replaced from the working position;
and S3, continuously monitoring the fan which is changed into the working position, so that the ethylene cracking furnace can be in a normal working state for a long time.
An online hot standby device of an air blower device of an ethylene cracking furnace comprises a cracking furnace main body, wherein a connecting pipe is fixedly connected to the upper end of the cracking furnace main body, one end of the connecting pipe penetrates through the side wall of the cracking furnace main body and is communicated with the inner cavity of the cracking furnace main body and the outside, a left wheel type turntable is arranged on the upper side of the cracking furnace main body and is positioned on the upper side of the connecting pipe, a servo motor is connected between the left wheel type turntable and the cracking furnace main body, the power output end of the servo motor is fixedly connected with the left wheel type turntable, the left wheel type turntable comprises a turntable main body, a plurality of air ducts are chiseled on the turntable main body and are uniformly distributed in the turntable main body, a fan main body matched with the air ducts is fixedly connected in the air ducts, an air supply pipe matched with the air ducts is arranged on the upper side of the left wheel type turntable and comprises a straight, straight tube portion is located the upside of bellows portion, the one end fixedly connected with and the ventiduct assorted connection arc head of straight tube portion are kept away from to bellows portion, bellows portion's outside fixedly connected with base, fixedly connected with movable block in the straight tube portion, fixedly connected with compression spring can realize need not to stop ethylene cracking furnace whole when the fan device of ethylene cracking furnace breaks down between base and the movable block, is difficult for influencing ethylene cracking furnace's normal work, is difficult for influencing ethylene cracking furnace's production efficiency.
Further, be connected with annular adaptation pad between connecting pipe and the left-hand wheel formula carousel, annular adaptation pad and connecting pipe fixed connection, the lower extreme fixedly connected with of carousel main part a plurality ofly with ventiduct assorted holding ring, can increase the leakproofness of being connected between connecting pipe and the left-hand wheel formula carousel through the cooperation of holding ring and annular adaptation pad, make the gas that the left-hand wheel formula carousel carried difficult leak, the holding ring can have obvious resistance when the within range that gets into annular adaptation pad along with the carousel main part rotates simultaneously, is favorable to servo motor to the control of left-hand wheel formula carousel rotation distance.
Further, annular adaptation pad is including adaptation pad main part, adaptation pad main part intussuseption is filled with a plurality of elastic cavity, elastic cavity intussuseption is filled with a plurality of elastic balls, can effectively increase the elasticity of annular adaptation pad, and the holding ring of being convenient for gets into the scope of annular adaptation pad.
Furthermore, the adaptation is filled up pre-buried in the main part and is reinforceed the net, reinforce the net and select the elastic cord to weave to form, reinforce the net and can effectively increase the intensity that adapts to and fill up the main part, make the main part of adaptation pad difficult by the holding ring extrusion fracture, even when the main part of adaptation pad appears breaking, the existence of strengthening the net also can make the difficult follow elasticity cavity of elastic ball escape, is difficult for polluting the production environment.
Further, the outer end fixedly connected with elastic fiber cluster of elastic ball, elastic fiber cluster has a plurality of elastic fiber to constitute, and a plurality of adjacent elastic fiber hand-over each other are in the same place, and the adjacent elastic fiber of filling up main part inner wall with the adaptation then runs through the adaptation and fills up the main part and with reinforceing net fixed connection, and the elastic fiber cluster of elastic ball surface connection can effectively increase the holistic elasticity of seal cover for annular adaptation pad has the trend of recovering the prototype fast after receiving the holding ring extrusion, is difficult for taking place the structure because of the extrusion of holding ring and collapses.
Furthermore, a sealing sleeve is connected between the cracking furnace main body and the connecting pipe, the sealing sleeve is fixedly connected with the cracking furnace main body, and the sealing sleeve can increase the sealing performance between the cracking furnace main body and the connecting pipe, so that the cracked gas in the cracking furnace main body is not easy to leak.
Furthermore, be connected with the sealing ring pad between base and the left-hand wheel formula carousel, the sealing ring pad cup joints in the outside of connecting the arc head with base fixed connection, increases the leakproofness of being connected between left-hand wheel formula carousel and the blast pipe, and the difficult normal conveying gas of blast pipe that influences.
Further, a plurality of slide bars of fixedly connected with are a plurality of on the base the one end that the base was kept away from to the slide bar all runs through the movable block and extends to the upside of movable block, the slide bar is pegged graft in compression spring's inboard, and compression spring can be protected to the slide bar on the one hand for compression spring is difficult for taking place the non-work to deformation, is difficult for causing compression spring inefficacy, and on the other hand, the inside slide bar of the movable block of pegging graft can also take place the distortion by house self, is difficult for causing the.
Furthermore, a wear-resistant ring is connected between the sliding rod and the movable block and fixedly connected with the movable block, so that the wear between the movable block and the sliding rod can be effectively reduced by the wear-resistant ring, and the movable block and the sliding rod are not easy to shake.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
the carrier of this scheme fan system chooses for use left-hand wheel formula carousel, the rotation mode is similar with the structure of left-hand wheel formula pistol dress bullet dish, it is comparatively simple and reliable to rotate required structure, even also difficult the trouble that causes because of structure self reason appears in long-time use, the difficult fan system that causes the ethylene cracking stove breaks down, make things convenient for technical staff to carry out routine maintenance and hidden danger investigation, easily realize carrying out quick replacement to the fan main part in the work position, can realize when the fan main part of ethylene cracking stove breaks down, need not to realize the whole shutdown of ethylene cracking stove and can realize the change and the maintenance and repair to the fan main part, the normal work of ethylene cracking stove is difficult to influence, the production efficiency of difficult influence ethylene cracking stove.
Drawings
FIG. 1 is an exploded view of the main structure of a fan hot standby system of an ethylene cracking furnace according to the present invention;
FIG. 2 is a schematic diagram of the main structure of a hot standby system of a fan of an ethylene cracking furnace according to the present invention;
FIG. 3 is a front cross-sectional view of a hot standby system of a fan of an ethylene cracking furnace according to the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic view of a partial structure at the location of the annular compliant pad of the present invention;
fig. 6 is a schematic view of the mechanism at the blower tube of the present invention.
The reference numbers in the figures illustrate:
the device comprises a cracking furnace body 1, a connecting pipe 2, a sealing sleeve 3, an annular adapting pad 4, an adapting pad body 401, an elastic cavity 402, an elastic ball 403, a reinforcing net 404, an elastic fiber cluster 405, a left-wheel turntable 5, a turntable body 501, a ventilation duct 502, a positioning ring 503, a fan body 6, a servo motor 7, an air supply pipe 8, a straight pipe 801, a corrugated pipe 802, a sealing ring pad 9, a connecting arc head 10, a base 11, a movable block 12, a sliding rod 13 and a compression spring 14.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
an on-line hot standby method for a fan device of an ethylene cracking furnace mainly comprises the following steps:
s1, fan monitoring, namely setting a fan for ventilating the ethylene cracking furnace as a working position fan, and utilizing a sensor loaded in the fan to monitor the rotating speed and the working temperature of the working position fan in real time, wherein the setting of the sensor, namely a monitoring method, is a known technology of technicians in the field, so that the detailed description is omitted in the application, and the technicians in the field can easily complete the setting and the use of the sensor according to the prior art in the field;
s2, replacing the fan, and replacing the fan at the working position when the working time of the fan reaches a preset standard or the rotating speed of the fan does not reach the preset standard for a long time, and arranging technicians to maintain and maintain the fan replaced from the working position, wherein the preset standard needs the technicians to preset the fan according to the actual working power before the ethylene cracking furnace works;
and S3, continuously monitoring the fan which is changed into the working position, so that the ethylene cracking furnace can be in a normal working state for a long time.
Particularly, in the process of replacing the fan at the working position, the fan main body 6 fixedly connected in the air duct 502 communicated with the connecting pipe 2 and the blast pipe 8 is regarded as the working position, the fan main body 6 in the working position is converted through the left wheel type rotating disc 5, the left wheel type rotating disc 5 can rotate along with the fan main body under the driving of the power output end of the servo motor 7, for the blast pipe 8 above the left wheel type rotating disc 5, the blast pipe 8 and the connecting arc head 10 can be stably moved out or moved into the air duct 502 through the flexible structure of the corrugated pipe part 802 and the connecting arc head 10, for the lower side of the left wheel type rotating disc 5, the air duct 502 can be stably moved into or moved out of the connecting pipe 2 through the flexible structure of the annular adapting pad 4 and the positioning ring, so that the left wheel type rotating disc 5 can stably rotate in the process, that is, the fan body 6 is relatively stable in rotation, and timely personnel can maintain and repair the fan body 6 moved out from the working position by themselves, and after the new fan body 6 is moved into the working position again, the air supply pipe 8 positioned at the upper side rapidly falls under the self-weight action of the compression spring 14 and the air supply pipe 8 in the compression state and the connecting arc head 10, so that the sealing ring pad 9 is tightly attached to the left wheel type turntable 5 to complete sealing, and for the lower side of the left wheel type turntable 5, sealing can be realized through the matching of the positioning ring 503 and the annular adapting pad 4, wherein the rotation amplitude of the power output end of the servo motor 7 and the rotation amplitude of the left wheel type turntable 5 are fixed to be 90 degrees when the fan body 6 is rotated each time, technical personnel can achieve the purpose of controlling the rotation amplitude of the servo motor 7 by programming the control terminal of the servo motor 7, and can realize that the whole ethylene cracking furnace does not need to be stopped when the fan device of the ethylene, the normal work of the ethylene cracking furnace is not easily influenced, and the production efficiency of the ethylene cracking furnace is not easily influenced.
Referring to fig. 1-4 and fig. 6, an on-line hot standby device for a fan device of an ethylene cracking furnace comprises a cracking furnace body 1, a connecting pipe 2 is fixedly connected to the upper end of the cracking furnace body 1, one end of the connecting pipe 2 penetrates through the side wall of the cracking furnace body 1 and communicates the inner cavity of the cracking furnace body 1 with the outside, a left wheel type turntable 5 is arranged on the upper side of the cracking furnace body 1, the left wheel type turntable 5 is positioned on the upper side of the connecting pipe 2, a servo motor 7 is connected between the left wheel type turntable 5 and the cracking furnace body 1, the power output end of the servo motor 7 is fixedly connected with the left wheel type turntable 5, the left wheel type turntable 5 comprises a turntable body 501, a plurality of air channels 502 are drilled on the turntable body 501, the air channels 502 are uniformly distributed in the turntable body 501, the fan body 6 matched with the air channels 502 is fixedly connected with the fan body, an air supply pipe 8 matched with the air channels 502 is, the blast pipe 8 comprises a straight pipe part 801 and a corrugated pipe part 802, the straight pipe part 801 is located on the upper side of the corrugated pipe part 802, one end, far away from the straight pipe part 801, of the corrugated pipe part 802 is fixedly connected with a connection arc head 10 matched with the air duct 502, the outer side of the corrugated pipe part 802 is fixedly connected with a base 11, a movable block 12 is fixedly connected onto the straight pipe part 801, and a compression spring 14 is fixedly connected between the base 11 and the movable block 12.
The fan device of the ethylene cracking furnace can be prevented from being shut down wholly, normal work of the ethylene cracking furnace is not easy to be influenced, and production efficiency of the ethylene cracking furnace is not easy to be influenced.
Particularly, in this scheme, the structures such as the left-wheel turntable 5 and the blast pipe 8 need to be additionally provided with a frame and the like for supporting, and the erection and the layout of the frame are well-known technologies of those skilled in the art, so that the frame is not disclosed in detail in this application, those skilled in the art can reasonably design and erect according to the prior art, one end of the blast pipe 8, which is far away from the left-wheel turntable 5, is fixedly connected with a high-pressure steam drum, the high-pressure steam drum conveys gas required for production into the cracking furnace main body 1 through the blast pipe 8, the left-wheel turntable 5 and the connecting pipe 2, and meanwhile, the technical personnel can realize the overall lightening of the left-wheel turntable 5 by setting the turntable main body 501 into a hollow structure and filling a proper amount of low-quality heat-insulating material into the hollow structure, thereby greatly reducing the power requirement on the servo motor. .
Referring to fig. 1-3 and fig. 5, an annular adaptive pad 4 is connected between the connection pipe 2 and the left wheel type turntable 5, the annular adaptive pad 4 is fixedly connected with the connection pipe 2, a plurality of positioning rings 503 matched with the ventilation channel 502 are fixedly connected to the lower end of the turntable main body 501, and the sealing performance of the connection between the connection pipe 2 and the left wheel type turntable 5 can be increased by the cooperation of the positioning rings 503 and the annular adaptive pad 4, so that the gas delivered by the left wheel type turntable 5 is not easy to leak out, and meanwhile, when the positioning rings 503 enter the range of the annular adaptive pad 4 along with the rotation of the turntable main body 501, there is obvious resistance, which is beneficial for the servo motor 7 to control the rotation distance of the left wheel type turntable 5, the annular adaptive pad 4 includes an adaptive pad main body 401, a plurality of elastic cavities 402 are filled in the adaptive pad main body 401, a plurality of elastic balls 403 are filled in the elastic cavities 402, which, the range of the positioning ring 503 entering the annular adapting pad 4 is convenient, the adapting pad main body 401 is pre-embedded with the strengthening net 404, the strengthening net 404 is woven by elastic ropes, the strengthening net 404 can effectively increase the strength of the adapting pad main body 401, so that the adapting pad main body 401 is not easy to be extruded and broken by the positioning ring 503, meanwhile, even when the adapting pad main body 401 is broken, the existence of the strengthening net 404 can also make the elastic ball 403 not easy to escape from the elastic cavity 402, the production environment is not easy to be polluted, the outer end of the elastic ball 403 is fixedly connected with the elastic fiber cluster 405, the elastic fiber cluster 405 is composed of a plurality of elastic fibers, a plurality of adjacent elastic fibers are mutually jointed together, the elastic fibers adjacent to the inner wall of the adapting pad main body 401 penetrate through the adapting pad main body 401 and are fixedly connected with the strengthening net 404, the elastic fiber cluster 405 connected with the surface of the elastic ball 403 can effectively increase, the annular adaptive pad 4 has a tendency of fast recovery after being pressed by the positioning ring 503, and the structure is not easy to collapse due to the pressing of the positioning ring 503.
Referring to fig. 1-4, a sealing sleeve 3 is connected between a cracking furnace body 1 and a connecting pipe 2, the sealing sleeve 3 is fixedly connected with the cracking furnace body 1, the sealing sleeve 3 can increase the sealing performance between the cracking furnace body 1 and the connecting pipe 2, so that the cracked gas in the cracking furnace body 1 is not easy to leak, a sealing ring pad 9 is connected between a base 11 and a left wheel type turntable 5, the sealing ring pad 9 is fixedly connected with the base 11 and sleeved outside a connecting arc head 10, so as to increase the sealing performance between the left wheel type turntable 5 and an air supply pipe 8, so as to not to affect the normal air supply of the air supply pipe 8, one ends of a plurality of sliding rods 13, which are far away from the base 11, of the sliding rods 13 are fixedly connected on the base 11, all penetrate through a movable block 12 and extend to the upper side of the movable block 12, the sliding rods 13 are inserted inside a compression spring 14, on one hand, the sliding rods 13 can protect the compression spring, be difficult for causing compression spring 14 to become invalid, on the other hand, the inside slide bar 13 of grafting movable block 12 equally can house bellows portion 802 self take place the distortion, is difficult for causing bellows portion 802 to tear, is connected with wear-resisting ring between slide bar 13 and the movable block 12, wear-resisting ring and movable block 12 fixed connection, wear-resisting ring can effectively reduce the wearing and tearing between movable block 12 and the slide bar 13, makes the connection between movable block 12 and the slide bar 13 difficult the appearance rock.
This scheme fan system's carrier chooses for use left-hand wheel formula carousel 5, the rotation mode is similar with the structure of left-hand wheel formula pistol dress bullet dish, it is comparatively simple and reliable to rotate required structure, even also difficult the trouble that causes because of structure self reason appears in long-time use, the difficult fan system that causes ethylene cracking furnace breaks down, make things convenient for technical staff to carry out routine maintenance and hidden danger investigation, easily realize carrying out quick replacement to fan main part 6 in the work position, can realize when fan main part 6 of ethylene cracking furnace breaks down, need not to shut down ethylene cracking furnace whole and can realize the change and the maintenance and repair to fan main part 6, the normal work of ethylene cracking furnace is difficult to influence, the production efficiency of ethylene cracking furnace is difficult to influence.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. An on-line hot standby method for a fan device of an ethylene cracking furnace is characterized by mainly comprising the following steps:
s1, monitoring a fan, namely setting the fan for ventilating the ethylene cracking furnace as a working position fan, and monitoring the rotating speed and the working temperature of the working position fan in real time by using a sensor loaded in the fan;
s2, replacing the fan, and when the working time of the fan reaches a preset standard or the rotating speed of the fan does not reach the preset standard for a long time, replacing the fan at the working position in the state that the whole ethylene cracking furnace is not stopped, and arranging technicians to maintain and maintain the fan replaced from the working position;
and S3, continuously monitoring the fan which is changed into the working position, so that the ethylene cracking furnace can be in a normal working state for a long time.
2. The on-line hot standby device of the fan device of the ethylene cracking furnace according to claim 1, comprising a cracking furnace main body (1), wherein the upper end of the cracking furnace main body (1) is fixedly connected with a connecting pipe (2), one end of the connecting pipe (2) penetrates through the side wall of the cracking furnace main body (1) and communicates the inner cavity of the cracking furnace main body (1) with the outside, and the on-line hot standby device is characterized in that: the cracking furnace is characterized in that a left wheel type turntable (5) is arranged on the upper side of the cracking furnace main body (1), the left wheel type turntable (5) is located on the upper side of the connecting pipe (2), a servo motor (7) is connected between the left wheel type turntable (5) and the cracking furnace main body (1), the power output end of the servo motor (7) is fixedly connected with the left wheel type turntable (5), the left wheel type turntable (5) comprises a turntable main body (501), a plurality of air ducts (502) are drilled on the turntable main body (501), the air ducts (502) are uniformly distributed in the turntable main body (501), a fan main body (6) matched with the air ducts (502) is fixedly connected in the air ducts (502), an air supply pipe (8) matched with the air ducts (502) is arranged on the upper side of the left wheel type turntable (5), the air supply pipe (8) comprises a straight pipe portion (801) and a corrugated pipe portion (802), straight tube portion (801) are located the upside of bellows portion (802), the one end fixedly connected with and air duct (502) assorted connection arc head (10) of straight tube portion (801) are kept away from to bellows portion (802), the outside fixedly connected with base (11) of bellows portion (802), fixedly connected with movable block (12) on straight tube portion (801), fixedly connected with compression spring (14) between base (11) and movable block (12).
3. The on-line hot standby device of the fan device of the ethylene cracking furnace of claim 1, which is characterized in that: be connected with annular adaptation pad (4) between connecting pipe (2) and left-hand wheel formula carousel (5), annular adaptation pad (4) and connecting pipe (2) fixed connection, the lower extreme fixedly connected with of carousel main part (501) a plurality of and ventiduct (502) assorted holding ring (503).
4. The on-line hot standby device of the fan device of the ethylene cracking furnace of claim 2, wherein: the annular adaptive pad (4) comprises an adaptive pad main body (401), a plurality of elastic cavities (402) are filled in the adaptive pad main body (401), and a plurality of elastic balls (403) are filled in the elastic cavities (402).
5. The on-line hot standby device of the fan device of the ethylene cracking furnace of claim 3, wherein: the adaptive pad is characterized in that a reinforcing net (404) is embedded in the adaptive pad main body (401), and the reinforcing net (404) is formed by weaving elastic ropes.
6. The on-line hot standby device of the fan device of the ethylene cracking furnace of claim 3, wherein: the outer end of the elastic ball (403) is fixedly connected with an elastic fiber cluster (405), the elastic fiber cluster (405) is composed of a plurality of elastic fibers, the adjacent elastic fibers are mutually connected together, and the elastic fibers adjacent to the inner wall of the adaptive pad main body (401) penetrate through the adaptive pad main body (401) and are fixedly connected with the reinforcing net (404).
7. The on-line hot standby device of the fan device of the ethylene cracking furnace of claim 1, which is characterized in that: a sealing sleeve (3) is connected between the cracking furnace main body (1) and the connecting pipe (2), and the sealing sleeve (3) is fixedly connected with the cracking furnace main body (1).
8. The on-line hot standby device of the fan device of the ethylene cracking furnace of claim 1, which is characterized in that: a sealing ring gasket (9) is connected between the base (11) and the left wheel type turntable (5), and the sealing ring gasket (9) is fixedly connected with the base (11) and is sleeved on the outer side of the connecting arc head (10).
9. The on-line hot standby device of the fan device of the ethylene cracking furnace of claim 1, which is characterized in that: the base (11) is fixedly connected with a plurality of slide bars (13) and a plurality of slide bars (13) are arranged, one ends of the slide bars (13) far away from the base (11) penetrate through the movable block (12) and extend to the upper side of the movable block (12), and the slide bars (13) are inserted into the inner side of the compression spring (14).
10. The on-line hot standby device of the fan device of the ethylene cracking furnace of claim 8, wherein: and a wear-resistant ring is connected between the sliding rod (13) and the movable block (12), and the wear-resistant ring is fixedly connected with the movable block (12).
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| CN202010795315.5A CN111894881B (en) | 2020-08-10 | 2020-08-10 | Online hot standby method for fan device of ethylene cracking furnace |
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| CN202010795315.5A CN111894881B (en) | 2020-08-10 | 2020-08-10 | Online hot standby method for fan device of ethylene cracking furnace |
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| CN111894881B (en) | 2021-08-10 |
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