CN112249862A - Universal type ethylene cracking furnace coil pipe hanging test tool and test method - Google Patents
Universal type ethylene cracking furnace coil pipe hanging test tool and test method Download PDFInfo
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- CN112249862A CN112249862A CN202011308331.3A CN202011308331A CN112249862A CN 112249862 A CN112249862 A CN 112249862A CN 202011308331 A CN202011308331 A CN 202011308331A CN 112249862 A CN112249862 A CN 112249862A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
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Abstract
The invention discloses a universal type coil pipe hanging test tool for an ethylene cracking furnace, which comprises a main hanging beam and universal hanging rings, wherein the lower part of the main hanging beam is connected with a plurality of universal hanging rings, and the lower parts of the universal hanging rings are connected with UU-shaped turnbuckles; the top of one end of the coil pipe is connected with a UU-shaped turnbuckle through a lifting rod component of a Bush-type pipe, and the top of the other end of the coil pipe is connected with the UU-shaped turnbuckle through an intermediate connecting piece; and an auxiliary tool is arranged at the lower part of the coil pipe. The invention has reasonable structure, convenient and simple operation and wide application range, greatly reduces the cost and the space for storing and hanging the test tool, prolongs the service life, greatly reduces the labor force and improves the inspection accuracy.
Description
Technical Field
The invention relates to the field of ethylene cracking furnaces in the petrochemical industry, in particular to a universal type coil pipe hanging tool of an ethylene cracking furnace and a testing method.
Background
Ethylene is the core of petrochemical industry, and the ethylene cracking furnace coil pipe is the core equipment of ethylene production equipment, and is mainly used for processing various raw materials such as natural gas, refinery gas, crude oil, naphtha and the like into cracked gas, providing the cracked gas for other ethylene devices, and finally processing various products such as ethylene, propylene and the like. When the coil pipe of the ethylene cracking furnace is manufactured by a manufacturing factory, one furnace is divided into a plurality of small groups of coils, and when each small group of coils is assembled and welded, a special assembling and welding tool for fixing the distance between each pipe and each pipe of the coil pipe is arranged. The coil pipe assembly welding tool can be detached when the coil pipe is transported to a customer site for installation, and the coil pipe can be vertically in a free state after the installation is completed. The limitation that the assembly and welding tool is not arranged among all the pipe fittings of the coil pipe of the ethylene cracking furnace can cause the phenomena that the center distance deviation among the pipe fittings is large and the mutual interference between the bottom S pipe and the U pipe occurs, the use and operation temperature of the coil pipe reaches more than 1100 ℃, the coil pipe can be heated unevenly in the use process, the coil pipe is in a twist shape, the pipe section can be seriously cracked, and the like, and the service life of the coil pipe of the ethylene cracking furnace is greatly influenced. In order to avoid the phenomenon that the size deviation between pipes is large and the mutual interference between the S pipe and the U pipe at the bottom is caused after the pipes are installed on site, the coil pipes need to be subjected to hanging test inspection after production and manufacturing are finished, and the phenomenon that a certain distance exists between every two coil pipes and the mutual interference between the S pipe and the U pipe is avoided when the coil pipes are vertically in a free state.
Disclosure of Invention
The invention aims to solve the technical problems and provides a universal hanging test tool and a test method for a coil pipe of an ethylene cracking furnace.
In order to achieve the technical purpose and achieve the technical requirements, the invention adopts the technical scheme that:
general type ethylene cracking furnace coil pipe hangs experimental frock, including main hanging beam, universal rings, its characterized in that: the lower part of the main hanging beam is connected with a plurality of universal hanging rings, and the lower parts of the universal hanging rings are connected with UU-shaped turn buckle screws; the top of one end of the coil pipe is connected with a UU-shaped turnbuckle through a lifting rod component of a Bush-type pipe, and the top of the other end of the coil pipe is connected with the UU-shaped turnbuckle through an intermediate connecting piece; and an auxiliary tool is arranged at the lower part of the coil pipe.
Preferably: the lifting tool for the pythium pipe comprises a main suspension rod, wherein a supporting suspension rod is obliquely arranged on the side surface of the main suspension rod, a handle is arranged at one end of a locking rod, and a stop block is welded on a screw rod of the locking rod; the locking rod penetrates through the support hanging rod to be connected with the main hanging rod, and the stop block is tightly attached to the end face of the support hanging rod.
Preferably: the main hoisting beam comprises a first cross beam, a plurality of double-end studs are connected to the first cross beam, and a second cross beam A, a second cross beam B or a second cross beam C is connected to the lower sides of the plurality of double-end studs; the left end and the right end of the first cross beam and the second cross beam A or the second cross beam B or the second cross beam C are connected with steel plates through screws; lifting lugs are arranged on the left side and the right side of the top surface of the cross beam.
Preferably: the middle connecting piece comprises a connecting rod, the top end of the connecting rod is connected with a universal lifting ring through a pin shaft, the bottom of the connecting rod is connected with a chuck, and the chuck is connected with the coil pipe through a bolt, a nut and a gasket.
Preferably: the auxiliary tool comprises a supporting plate, side plates are welded at two ends of the supporting plate, lifting lugs are arranged at the tops of the side plates, a plurality of screw rods are arranged on the supporting plate, the coil pipe is clamped in a groove of the supporting plate, and the plurality of screw rods penetrate through a pressing plate A or a pressing plate B and are fastened in the groove of the supporting plate through nuts.
A plurality of universal lifting ring connecting holes are formed in the second cross beam A, and the universal lifting ring connecting hole distance is the same as the center distance of the coil pipe; and the coil pipes with different center distances are provided with a second cross beam B or a second cross beam C with identical hole distances.
Preferably: the main suspender, the suspender check block locking rod and the handle are made of the following materials: 304 stainless steel.
The coil pipe hanging test method of the universal ethylene cracking furnace is characterized by comprising the following steps: the method comprises the following steps:
step one, preparation before testing: firstly, conveying the coil pipe and a coil pipe assembling and welding tool to an outdoor open place; conveying the coil pipe hanging test tool to the coil pipe; the suspension test needs two steam cranes, a main steam crane and an auxiliary steam crane;
inserting a main suspender into the casthouse pipe at one end of the coil pipe from the upper part, wherein a threaded hole on the main suspender is over against the center of a flange hole of the casthouse pipe, sleeving a supporting suspender on a locking rod, slowly pushing the supporting suspender into an inner hole of the flange of the casthouse pipe, and locking the supporting suspender and the main suspender by rotating a handle; a plurality of universal hanging rings are arranged below the main hanging beam, and the lower surfaces of the universal hanging rings are connected with the main hanging rod through pin shafts; the other end of the coil pipe is connected with the middle connecting piece through a bolt, a nut and a gasket;
thirdly, removing a pressing plate, a nut and a gasket on the coil assembling and welding tool, simultaneously hoisting the coil to the half-empty height of 2-3 m by two steam hoists, and separating the coil assembling and welding tool from the coil;
step four, continuously hoisting the hanging test tool by using the main steam hoist, enabling the auxiliary steam hoist to be temporarily immobile, and slowly descending the auxiliary tool to the position where the coil is vertical when the main steam hoist hoists the hanging test tool and the coil to the vertical state;
dismantling the auxiliary tool to enable the coil pipes to be in a free vertical state, simulating a field installation state, adjusting each group of coil pipes up and down through UU-shaped turnbuckles, and checking whether the S pipes and the U pipes at the bottoms of the coil pipes are mutually interfered or not;
and step six, after the inspection is finished, the auxiliary tool is installed, the two steam cranes hoist the coil pipe to a horizontal state, finally, the coil pipe is slowly and stably placed on the coil pipe welding tool, a pressing plate, a nut and a gasket are installed, then, the hanging test tool is dismantled, and the coil pipe is transported to a workshop delivery area to be stored.
Preferably: and the second cross beam A in the main hanging beam 4 is replaced by a corresponding hole pitch according to the center pitch of the coil pipe.
Compared with the traditional structure, the invention has the beneficial effects that: 1. the second cross beam is replaced, the device is suitable for hanging the coil pipes with different center distances, the application range is wide, and the cost and the space for storing the hanging test tool are greatly reduced; 2. the coil pipe is ensured not to generate interference phenomenon, the coil pipe is not heated unevenly in the use process, and the service life is prolonged; 3. through UU type turnbuckle adjust from top to bottom, simulate on-the-spot installation state, reach the purpose of inspection coil pipe, convenient operation is simple, has reduced the labour by a wide margin, has improved the accuracy nature of inspection.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of FIG. 1 taken along line B;
FIG. 4 is a schematic structural view of the main suspension beam of the present invention;
FIG. 5 is a front view of the intermediate connector of the present invention;
FIG. 6 is a left side view of the intermediate connector of the present invention;
FIG. 7 is a schematic view of an auxiliary tool according to the present invention;
FIG. 8 is a schematic view of the coil pipe dismantling assembly welding tool of the present invention;
in the figure: 1. the universal lifting ring comprises a universal lifting ring, 2 UU-shaped turnbuckle, 3 a halter-type lifting tool, 31 a main lifting rod, 32 a support lifting rod, 33 a stop block, 34 a locking rod, 35 a handle, 4 a main lifting beam, 41 a first cross beam, 42 a second cross beam, 43 a double-end stud, 44 a steel plate, 5 an intermediate connecting piece, 51 a connecting rod, 52 a chuck, 6 a coil pipe, 7 an auxiliary tool, 71 a side plate, 72 a supporting plate, 73 a pressing plate A, 74 a screw rod, 75 a pressing plate B, 8 a lifting chain A, 9 a coil pipe assembly welding tool and 10 a lifting chain B.
Detailed Description
The present invention is further described below.
Referring to the attached drawings, the universal type ethylene cracking furnace coil pipe hanging test tool comprises a main hanging beam 4 and universal hanging rings 1, and is characterized in that: the lower part of the main hanging beam 4 is connected with a plurality of universal hanging rings 1, and the lower parts of the universal hanging rings 1 are connected with UU-shaped turnbuckles 2; the top of one end of the coil pipe 6 is connected with the UU-shaped turnbuckle 2 through a buoyin pipe lifting rod assembly 3, and the top of the other end of the coil pipe 6 is connected with the UU-shaped turnbuckle 2 through an intermediate connecting piece 5; and an auxiliary tool 7 is arranged at the lower part of the coil 6.
In the preferred embodiment, the pythic pipe hoisting tool 3 comprises a main boom 31, a support boom 32 is obliquely arranged on the side surface of the main boom 31, a handle 35 is arranged at one end of a locking rod 34, and a stop block 33 is welded on a screw rod of the locking rod 34; the locking bar 34 is connected with the main boom 31 through the support boom 32, and the stopper 33 is tightly attached to the end surface of the support boom 32.
In the preferred embodiment, the main hanging beam comprises a first cross beam 41, the first cross beam 41 is connected with a plurality of studs 43, and a second cross beam a42, a second cross beam B or a second cross beam C is connected below the studs 43; the left end and the right end of the first beam 41 and the second beam A42 or the second beam B or the second beam C are connected with steel plates 44 through screws; lifting lugs are arranged on the left side and the right side of the top surface of the first cross beam 41.
In the preferred embodiment, the intermediate connecting member 5 includes a connecting rod 51, the top end of the connecting rod 51 is connected with the universal hoisting ring 1 through a pin shaft, the bottom of the connecting rod 51 is connected with a clamping head 52, and the clamping head 52 is connected with the coil pipe 6 through a bolt, a nut and a gasket.
In this preferred embodiment, the auxiliary tool 7 includes a supporting plate 72, side plates 71 are welded at two ends of the supporting plate 72, lifting lugs are arranged at tops of the side plates 71, a plurality of screws 74 are arranged on the supporting plate 72, the coil pipe 6 is clamped in a groove of the supporting plate 72, the screws 74 penetrate through a pressing plate a73 or a pressing plate B75, and the coil pipe 6 is fastened in the groove of the supporting plate 72 through nuts.
In the preferred embodiment, a plurality of universal lifting ring connecting holes are formed in the second cross beam A42, and the distance between the universal lifting ring connecting holes is the same as the center distance of the coil 6; and the coil pipes 6 with different center distances are provided with a second beam B or a second beam C with identical hole distances.
In this preferred embodiment, the main boom 31, the support boom 32, the stopper 33, the locking rod 34, and the handle 35 are made of: 304 stainless steel.
The coil pipe hanging test method of the universal ethylene cracking furnace is characterized by comprising the following steps: the method comprises the following steps:
step one, preparation before testing: firstly, conveying the coil pipe and a coil pipe assembling and welding tool to an outdoor open place; conveying the coil pipe hanging test tool to the coil pipe; the suspension test needs two steam cranes, a main steam crane and an auxiliary steam crane;
secondly, inserting the main suspender 31 into the turnip-shaped pipe at one end of the coil pipe from the upper part, wherein a threaded hole on the main suspender 31 is over against the center of a flange hole of the turnip-shaped pipe, sleeving the supporting suspender 32 on the locking rod 34, slowly pushing the supporting suspender 32 into an inner hole of the flange of the turnip-shaped pipe, and rotating the handle to lock the supporting suspender 32 and the main suspender 31; a plurality of universal hanging rings 1 are arranged below the main hanging beam 4, and the lower sides of the universal hanging rings 1 are connected with a main hanging rod 31 through pin shafts; the other end of the coil is connected with the middle connecting piece 5 through a bolt, a nut and a gasket;
thirdly, dismantling a pressing plate, a nut and a gasket on the coil assembling and welding tool 9, simultaneously hoisting the coil to the half-empty height of 2-3 m by two steam hoists, and separating the coil assembling and welding tool from the coil at the moment;
step four, continuously hoisting the hanging test tool by using a 25T steam hoist, enabling the auxiliary steam hoist to be temporarily immobile, and slowly descending the auxiliary tool to the state that the coil is vertical when the main steam hoist hoists the hanging test tool and the coil to the vertical state;
dismantling the auxiliary tool to enable the coil pipes to be in a free vertical state, simulating a field installation state, adjusting each group of coil pipes up and down through UU-shaped turnbuckles, and checking whether the S pipes and the U pipes at the bottoms of the coil pipes are mutually interfered or not;
and step six, after the inspection is finished, the auxiliary tool is installed, the two steam cranes hoist the coil pipe to a horizontal state, finally, the coil pipe is slowly and stably placed on the coil pipe welding tool, a pressing plate, a nut and a gasket are installed, then, the hanging test tool is dismantled, and the coil pipe is transported to a workshop delivery area to be stored.
In the preferred embodiment, the second cross beam a42 in the main hanging beam 4 is replaced by a corresponding hole distance according to the center distance of the coil 6.
The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, but not intended to limit the scope of the present invention, and all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (9)
1. General type ethylene cracking furnace coil pipe hangs experimental frock, including main hanging beam (4), universal rings (1), its characterized in that: the lower part of the main hanging beam (4) is connected with a plurality of universal hanging rings (1), and the lower parts of the universal hanging rings (1) are connected with UU-shaped turnbuckles (2); the top of one end of the coil pipe (6) is connected with the UU-shaped turnbuckle (2) through a hoisting rod component (3) of the cylindrical pipe, and the top of the other end of the coil pipe (6) is connected with the UU-shaped turnbuckle (2) through an intermediate connecting piece (5); and an auxiliary tool (7) is arranged at the lower part of the coil (6).
2. The universal type coil pipe hanging test tool for the ethylene cracking furnace as claimed in claim 1, which is characterized in that: the lifting tool (3) for the pythoid comprises a main suspension rod (31), a support suspension rod (32) is obliquely arranged on the side surface of the main suspension rod (31), a handle (35) is arranged at one end of a locking rod (34), and a stop block (33) is welded on a screw rod of the locking rod (34); the locking rod (34) penetrates through the support suspension rod (32) to be connected with the main suspension rod (31), and the stop block (33) is tightly attached to the end face of the support suspension rod (32).
3. The universal type coil pipe hanging test tool for the ethylene cracking furnace as claimed in claim 1, which is characterized in that: the main hoisting beam comprises a first cross beam (41), the first cross beam (41) is connected with a plurality of studs (43), and a second cross beam A (42), a second cross beam B or a second cross beam C are connected below the studs (43); the left end and the right end of the first cross beam (41) and the second cross beam A (42) or the second cross beam B or the second cross beam C are connected with steel plates (44) through screws; lifting lugs are arranged on the left side and the right side of the top surface of the first cross beam (41).
4. The universal type coil pipe hanging test tool for the ethylene cracking furnace as claimed in claim 1, which is characterized in that: the middle connecting piece (5) comprises a connecting rod (51), the top end of the connecting rod (51) is connected with the universal lifting ring (1) through a pin shaft, the bottom of the connecting rod (51) is connected with a chuck (52), and the chuck (52) is connected with the coil pipe (6) through a bolt, a nut and a gasket.
5. The universal type coil pipe hanging test tool for the ethylene cracking furnace as claimed in claim 1, which is characterized in that: auxiliary fixtures (7), including backup pad (72), curb plate (71) have been welded at backup pad (72) both ends, and curb plate (71) top is provided with the lug, be provided with a plurality of screw rod (74) on backup pad (72), coil pipe (6) card is established in the recess of backup pad (72), a plurality of screw rod (74) pass clamp plate A (73) or clamp plate B (75), fasten coil pipe (6) in backup pad (72) recess through the nut.
6. The universal type coil pipe hanging test tool for the ethylene cracking furnace as claimed in claim 3, which is characterized in that: a plurality of universal lifting ring connecting holes are formed in the second cross beam A (42), and the distance between the universal lifting ring connecting holes is the same as the center distance of the coil pipe (6); the coil pipes (6) with different center distances are provided with a second cross beam B or a second cross beam C with matched hole distances.
7. The universal type coil pipe hanging test tool for the ethylene cracking furnace as claimed in claim 2, which is characterized in that: the main suspender (31), the supporting suspender (32), the block (33), the locking rod (34) and the handle (35) are made of the following materials: 304 stainless steel.
8. The coil pipe hanging test method of the universal ethylene cracking furnace is characterized by comprising the following steps: the method comprises the following steps:
step one, preparation before testing: firstly, conveying the coil pipe and a coil pipe assembling and welding tool to an outdoor open place; conveying the coil pipe hanging test tool to the coil pipe; the suspension test needs two steam cranes, a main steam crane and an auxiliary steam crane;
secondly, inserting a main suspender (31) into a radish-shaped pipe at one end of the coil pipe from the upper part, wherein a threaded hole on the main suspender (31) is over against the center of a flange hole of the radish-shaped pipe, sleeving a supporting suspender (32) on a locking rod (34), slowly pushing the supporting suspender (32) into an inner hole of the flange of the radish-shaped pipe, and rotating a handle to lock the supporting suspender (32) and the main suspender (31); a plurality of universal hanging rings (1) are arranged below the main hanging beam (4), and the lower surfaces of the universal hanging rings (1) are connected with a main hanging rod (31) through pin shafts; the other end of the coil is connected with a middle connecting piece (5) through a bolt, a nut and a gasket;
thirdly, dismantling a pressing plate, a nut and a gasket on the coil assembling and welding tool (9), hoisting the coil to the half-empty height of 2-3 m by two steam hoists at the same time, and separating the coil assembling and welding tool from the coil at the moment;
step four, continuously hoisting the hanging test tool by using the main steam hoist, enabling the auxiliary steam hoist to be temporarily immobile, and slowly descending the auxiliary tool to the position where the coil is vertical when the main steam hoist hoists the hanging test tool and the coil to the vertical state;
dismantling the auxiliary tool to enable the coil pipes to be in a free vertical state, simulating a field installation state, adjusting each group of coil pipes up and down through UU-shaped turnbuckles, and checking whether the S pipes and the U pipes at the bottoms of the coil pipes are mutually interfered or not;
and step six, after the inspection is finished, the auxiliary tool is installed, the two steam cranes hoist the coil pipe to a horizontal state, finally, the coil pipe is slowly and stably placed on the coil pipe welding tool, a pressing plate, a nut and a gasket are installed, then, the hanging test tool is dismantled, and the coil pipe is transported to a workshop delivery area to be stored.
9. The universal type coil pipe hanging test tool for the ethylene cracking furnace as claimed in claim 3, 6 or 8, which is characterized in that: and the second cross beam A (42) in the main hanging beam 4 is replaced by a corresponding hole distance according to the center distance of the coil pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011308331.3A CN112249862B (en) | 2020-11-20 | 2020-11-20 | Universal type ethylene cracking furnace coil pipe hanging test tool and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011308331.3A CN112249862B (en) | 2020-11-20 | 2020-11-20 | Universal type ethylene cracking furnace coil pipe hanging test tool and test method |
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| Publication Number | Publication Date |
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| CN112249862A true CN112249862A (en) | 2021-01-22 |
| CN112249862B CN112249862B (en) | 2022-04-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670975A (en) * | 2009-09-26 | 2010-03-17 | 东方电气集团东方汽轮机有限公司 | Steam turbine rotor lifting tool |
| CN105443871A (en) * | 2015-12-29 | 2016-03-30 | 中建三局机电工程有限公司 | Novel support hanger and construction process for butting connection of horizontal multiple pipelines |
| CN107335960A (en) * | 2017-08-19 | 2017-11-10 | 江苏标新工业有限公司 | A kind of device of ethane cracking furnace coil pipe group weldering upset |
| CN208587601U (en) * | 2018-06-27 | 2019-03-08 | 华电电力科学研究院有限公司 | A kind of high temperature steam pipeline water pressure test hanger |
| CN211110604U (en) * | 2019-10-31 | 2020-07-28 | 江苏标新工业有限公司 | Universal type ethylene cracking furnace coil pipe storage, hoisting and transportation tool rack |
-
2020
- 2020-11-20 CN CN202011308331.3A patent/CN112249862B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670975A (en) * | 2009-09-26 | 2010-03-17 | 东方电气集团东方汽轮机有限公司 | Steam turbine rotor lifting tool |
| CN105443871A (en) * | 2015-12-29 | 2016-03-30 | 中建三局机电工程有限公司 | Novel support hanger and construction process for butting connection of horizontal multiple pipelines |
| CN107335960A (en) * | 2017-08-19 | 2017-11-10 | 江苏标新工业有限公司 | A kind of device of ethane cracking furnace coil pipe group weldering upset |
| CN208587601U (en) * | 2018-06-27 | 2019-03-08 | 华电电力科学研究院有限公司 | A kind of high temperature steam pipeline water pressure test hanger |
| CN211110604U (en) * | 2019-10-31 | 2020-07-28 | 江苏标新工业有限公司 | Universal type ethylene cracking furnace coil pipe storage, hoisting and transportation tool rack |
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| CN112249862B (en) | 2022-04-22 |
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