Coke oven gas pipeline flange rapid positioning device and method of using same

Abstract

The application provides a coke oven gas pipeline flange rapid positioning device, which comprises a load plate, a lower end adjusting part connected to the bottom of the load plate and used for adjusting the levelness of the load plate, a first level meter arranged on the front side of the load plate and used for measuring the horizontal plane angle of the load plate in real time, a lifting type jacking and clamping part arranged on the load plate and used for fixing and adjusting the external flange, and a stability group arranged in the lower end adjusting part and respectively located at the bottom surface of the lower end adjusting part at four corners and used for weighting and preventing sliding. The coke oven gas pipeline flange rapid positioning device can quickly position the coke oven gas branch flange to an accurate position through the cooperation of the load plate, the lower end adjusting part and the lifting type jacking and clamping part, and effectively improves the work efficiency of the gas branch installation.

Description

Technical Field

[0001] This invention relates to the field of installation technology for coke oven heating gas equipment, and more specifically, to a quick positioning device for coke oven gas pipeline flanges and its usage method. Background Technology

[0002] A coke oven is a piece of equipment used to produce coke. It is a system consisting of a blast furnace, gas purification equipment, and coke preparation equipment, and is an important production facility in the iron and steel industry. The coke oven is the main thermal equipment in the coking industry and an indispensable piece of equipment in large integrated iron and steel enterprises.

[0003] The coke oven gas system is an important component of the coke oven. Its function is to supply and regulate pressurized gas to the coke oven. The gas from the main coke oven gas pipe enters the main coke oven gas pipe in the middle of the basement through a gas preheater at one end of the basement. From there, it enters the horizontal gas pipe through various gas branch pipes (equipped with regulating and exchanging valves), then through small horizontal pipes (equipped with small orifice plates or nozzles), and finally through the lower spray pipe into the vertical brick gas duct. Finally, it enters the vertical combustion chamber and mixes with the air from the inclined duct for combustion.

[0004] During the installation of the main and branch gas pipes in a coke oven, the upper part of the branch gas pipes requires the installation of valves and exchange transmission devices. If the installation elevation accuracy of the flanges on the upper part of the branch gas pipes does not meet the design requirements, it will affect the subsequent use of the valves and exchange transmission devices. However, due to the large number of branch gas pipes in a coke oven, there are also a large number of branch pipe flanges on the upper part of the main gas pipes. The usual method for installing branch pipes and flanges is to use a level to measure the elevation of each branch pipe and flange opening one by one. Welding is carried out only after the data measurement is accurate. However, this installation method is time-consuming and inefficient. Moreover, the measured data is first recorded and marked on the coke oven before the flanges are assembled, which introduces a certain degree of human error. Therefore, the installation accuracy needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a quick positioning device for coke oven gas pipeline flanges to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides a rapid positioning device for a coke oven gas pipeline flange, comprising: a load-bearing plate; a lower adjustment part connected to the bottom of the load-bearing plate for adjusting the levelness of the load-bearing plate; a first level instrument disposed on the front side of the load-bearing plate for real-time measurement of the horizontal angle of the load-bearing plate; a lifting-type top support clamping part disposed on the load-bearing plate for fixing and adjusting the external flange; and a stabilizing assembly disposed within the lower adjustment part and located at the four corners of its bottom surface for weight-bearing and anti-slip purposes.

[0007] The spiral-tightening lifting top support clamp can be pushed forward inward to abut against the outer flange.

[0008] The lifting support clamp can be lifted at a single point or simultaneously to partially or completely lift the external flange.

[0009] Furthermore, the lifting top support clamping part includes several columns vertically mounted in a triangular shape on the load plate, positioning steel plates in an "L" shape and respectively mounted on the top of the columns for providing an installation positioning reference for external objects, lifting mechanisms respectively set at the tail of the positioning steel plates, connecting sleeve plates respectively connected to the lifting mechanisms, steel rings mounted on the connecting sleeve plates, several reference pads circumferentially mounted on the side of the steel rings for creating a reference surface, hand-tightening adjusting bolts spirally passing through the reference pads and the steel rings for abutting against the external flange, three connecting blocks circumferentially mounted on the side of the steel rings with a gap between the connecting sleeves and the reference pads, and three second levels respectively mounted on the three connecting blocks for real-time display of the levelness of the steel rings;

[0010] Several of the hand-tightening adjusting bolts converge toward the center of the steel ring.

[0011] Furthermore, the lower adjustment part includes a base located directly below the load plate, four screw jacks arrayed on the base for generating vertical force, and two double-headed transmission rods respectively mounted on the output shafts of the two screw jacks for transmitting power;

[0012] The two double-headed transmission rods are connected to the four inflection points on the bottom surface of the load plate.

[0013] Furthermore, the lifting mechanism includes a "U"-shaped positioning plate installed at the tail of the positioning steel plate, a micro motor installed in the "U"-shaped positioning plate for generating torque, a screw integrally connected to the output shaft of the micro motor and extending upward through the positioning steel plate, and a bearing installed at the top of the screw for achieving relative rotation.

[0014] The bearing is installed inside the connecting sleeve plate.

[0015] Furthermore, the stabilization assembly includes a metal block disposed within the base for increasing weight, a thin plate mounted on the bottom of the metal block, and an array of rubber protrusions mounted on the thin plate for increasing friction.

[0016] Several of the rubber bumps extend slightly beyond the base.

[0017] Furthermore, a quick positioning device for a coke oven gas pipeline flange also includes an elastic band installed on the front side of the load plate and clamping both ends of the first level to reinforce the first level.

[0018] Furthermore, a hole is provided in the center of the load-bearing plate for external branch pipes to pass through;

[0019] The top of the steel ring is equipped with a laser emitter for aligning with an external elevation scale.

[0020] Furthermore, the lifting top support clamping part also includes several arc-shaped connecting strips that are sequentially connected end to end to connect the several columns into one unit.

[0021] Furthermore, some of the columns are H-beams.

[0022] According to a second aspect of the present invention, a method of using the quick positioning device for coke oven gas pipeline flanges is provided:

[0023] Step 1: Assemble all components according to the predetermined positions and assembly requirements. Then, set elevation scale plates at both ends of the coke oven gas main pipe and mark the design elevation of the branch pipe and flange on the scale plates.

[0024] Step 2: Pre-weld the gas branch pipe to the flange, and place the assembled device above the corresponding gas main pipe according to the installation position of the gas branch pipe.

[0025] Step 3: Drive the lower adjustment part and continuously observe the levelness of the load plate with the first level instrument until the load plate is adjusted to a level state;

[0026] Step 4: Insert the flanged gas branch pipe into the hole and align the flange with the steel ring. Then, turn several hand-tightening adjusting bolts to move them towards the flange in the middle until all the hand-tightening adjusting bolts are in contact with the flange, tighten the flange, and fix the flange.

[0027] Step 5: Turn on the laser emitter and use the lifting mechanism to continuously lift the steel ring and flange upwards until the laser beam emitted by the laser emitter lands at the same point as the flange installation elevation on the elevation scale. Immediately stop the lifting mechanism to complete the alignment of the flange installation elevation. Then, drive the lifting mechanism again to fine-tune the height of the flange surface and use the digital display values ​​of the three second levels to adjust the flatness of the flange to a horizontal state.

[0028] Step Six: After adjustment, weld the branch pipe to the main pipe and install the remaining branch pipes in a continuous manner.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. This coke oven gas pipeline flange quick positioning device can clamp the flange on the branch pipe to achieve positioning through the lifting top support clamping part, which gets rid of the traditional method that requires manual handling throughout the process, thereby speeding up the installation process. At the same time, the lifting top support clamping part can adapt to flanges of different sizes, with good compatibility, thus ensuring that flanges of different sizes can be installed.

[0031] 2. The coke oven gas pipeline flange quick positioning device can make two adjustments in angle and height in sequence through the lower adjustment part and the lifting top support clamping part, so as to realize the mode of coarse adjustment followed by fine adjustment. At the same time, with the real-time monitoring of the first level and the second level, it can ensure that the level of the flange on the branch pipe and the docking height with the main gas pipeline can be accurately controlled, thereby eliminating human error and greatly improving the installation accuracy.

[0032] 3. The fast positioning device for the coke oven gas pipeline flange can enhance the device's gravity and anti-slip ability through the stabilization group, thereby preventing slippage or tilting during installation and ensuring the smooth installation of the branch pipe and the main pipe.

[0033] 4. This coke oven gas pipeline flange quick positioning device, through the cooperation of the load plate, the lower adjustment part and the lifting top support clamping part, can quickly position the coke oven gas branch pipe flange to the accurate position, effectively improving the work efficiency of gas branch pipe installation. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] Figure 1 A perspective view of the present invention is shown;

[0036] Figure 2 A bottom-view perspective view of the present invention is shown;

[0037] Figure 3 A partial right view of the invention is shown;

[0038] Figure 4 A top view of the invention is shown;

[0039] Figure 5 A partial perspective view of the present invention is shown;

[0040] Figure 6 The present invention is shown. Figure 1 Enlarged view of point A;

[0041] Figure 7 The present invention is shown. Figure 2 Enlarged view of point B;

[0042] Figure 8 The present invention is shown. Figure 2Enlarged view of point C;

[0043] Figure 9 The present invention is shown. Figure 5 Enlarged view of point D;

[0044] Figure 10 The present invention is shown. Figure 5 Enlarged view of point E.

[0045] In the figure, the same reference numerals represent the same structural element, wherein:

[0046] 1. Load plate; 11. Hole; 2. Lower adjustment part; 21. Base; 22. Screw jack; 23. Double-headed transmission rod; 3. First level; 4. Lifting top support clamping part; 41. Column; 42. Positioning steel plate; 43. Lifting mechanism; 431. "U" shaped positioning plate; 432. Micro motor; 433. Screw; 434. Bearing; 44. Connecting sleeve; 45. Steel ring; 451. Laser emitter; 46. Reference pad; 47. Hand-tightening adjusting bolt; 48. Connecting block; 49. Second level; 491. Arc-shaped connecting strip; 5. Stabilizing group; 51. Metal block; 52. Thin plate; 53. Rubber protrusion; 6. Elastic band. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0048] Please see Figure 1 , Figure 1 A perspective view of the present invention is shown; please refer to [link / reference]. Figure 2 , Figure 2 A bottom-view perspective view of the present invention is shown; please refer to [link / reference]. Figure 3 , Figure 3 A partial right view of the invention is shown; please refer to [link / reference]. Figure 4 , Figure 4 A top view of the invention is shown; please refer to [link / reference]. Figure 5 , Figure 5 A partial perspective view of the invention is shown; please refer to [link / reference]. Figure 6 , Figure 6 The present invention is shown. Figure 1 Please refer to the enlarged view at point A; Figure 7 , Figure 7 The present invention is shown. Figure 2 Please refer to the enlarged view at point B; Figure 8 , Figure 8 The present invention is shown. Figure 2 Enlarged view at point C; please refer to [link / reference]. Figure 9 , Figure 9 The present invention is shown. Figure 5Enlarged view of point D; please refer to [link / reference]. Figure 10 , Figure 10 The present invention is shown. Figure 5 Enlarged view at point E; as shown Figure 1-10 As shown, a quick positioning device for a coke oven gas pipeline flange includes: a load-bearing plate 1; a lower adjustment part 2 connected to the bottom of the load-bearing plate 1 for adjusting the levelness of the load-bearing plate 1; a first level 3 disposed on the front side of the load-bearing plate 1 for real-time measurement of the horizontal angle of the load-bearing plate 1; a lifting-type top support clamping part 4 disposed on the load-bearing plate 1 for fixing and adjusting the external flange; and a stabilizing group 5 disposed within the lower adjustment part 2 and located at the four corners of its bottom surface for weight-bearing and anti-slip purposes.

[0049] The spiral-tightening lifting top support clamping part 4 can be pushed forward inward to abut against the outer flange;

[0050] The lifting-type top support clamping part 4 can be lifted individually or synchronously to partially or entirely lift the external flange. This coke oven gas pipeline flange quick positioning device can clamp the flange on the branch pipe to achieve positioning through the lifting-type top support clamping part 4, eliminating the need for manual handling throughout the process in traditional methods, thus accelerating the installation process. At the same time, the lifting-type top support clamping part 4 can adapt to flanges of different sizes, with good compatibility, thus ensuring that flanges of different sizes can be installed. The lower adjustment part 2 and the lifting-type top support clamping part 4 can be adjusted twice in terms of angle and height, thus realizing the mode of coarse adjustment followed by fine adjustment. At the same time, the first level 3 With the real-time monitoring of the second level 49, the horizontality of the branch pipe flange and the docking height with the main gas pipeline can be accurately controlled, thereby eliminating human error and greatly improving installation accuracy. The stabilization group 5 can enhance the gravity and anti-slip ability of the device, thereby preventing slippage or tilting during installation, thus ensuring the smooth installation of the branch pipe and the main pipe. The coke oven gas pipeline flange quick positioning device, through the cooperation of the load plate 1, the lower adjustment part 2 and the lifting top support clamping part 4, can quickly position the coke oven gas branch pipe flange to the accurate position, effectively improving the work efficiency of gas branch pipe installation.

[0051] Optionally, the lifting top support clamping part 4 includes a plurality of columns 41 vertically installed in a triangular shape on the load plate 1, positioning steel plates 42 in an "L" shape and respectively installed on the top of the plurality of columns 41 for providing an installation positioning reference for external objects, lifting mechanisms 43 respectively disposed at the tail of the plurality of positioning steel plates 42, connecting sleeve plates 44 respectively connected to the plurality of lifting mechanisms 43, steel rings 45 installed on the plurality of connecting sleeve plates 44, a plurality of reference pads 46 circumferentially installed on the side of the steel rings 45 for creating a reference surface, hand-tightening adjusting bolts 47 spirally passing through the plurality of reference pads 46 and the steel rings 45 respectively for abutting against the external flange, three connecting blocks 48 circumferentially installed on the side of the steel rings 45 and spaced between the plurality of connecting sleeve plates 44 and the plurality of reference pads 46, and three second levels 49 respectively installed on the three connecting blocks 48 for real-time display of the levelness of the steel rings 45;

[0052] Several hand-tightening adjusting bolts 47 converge toward the center of the steel ring 45. After inserting the flanged gas branch pipe end into the hole 11 and the flange into the steel ring 45, the four hand-tightening adjusting bolts 47 are turned, causing them to gradually move inward until all four hand-tightening adjusting bolts 47 are in contact with the flange, thereby tightening the flange and fixing the branch pipe and the flange. This ensures that no manual support is required, forming the basis for subsequent leveling and alignment work. At the same time, the four hand-tightening adjusting bolts 47 gradually close from the outside to the inside, thereby ensuring that flanges of various sizes can be clamped, improving compatibility.

[0053] Optionally, the lower adjustment part 2 includes a base 21 disposed directly below the load plate 1, four screw jacks 22 arrayed on the base 21 for generating vertical force, and two double-headed transmission rods 23 respectively mounted on the output shafts of the two screw jacks 22 for transmitting power. The screw jack 22 is an existing basic lifting component.

[0054] The two double-headed transmission rods 23 are connected to the four corner points on the bottom surface of the load plate 1, ensuring that the levelness of the load plate 1 can be obtained by reading the value of the first level 3 on the load plate 1. Then, the two screw jacks 22 on the corresponding side are selected for rectangular drive. The lower side of the load plate 1 is lifted by the lifting of the screw jacks 22, thereby ensuring that the load plate 1 can be adjusted to a horizontal state with the cooperation of the lower adjustment part 2 and the first level 3, so as to roughly complete the flange leveling work.

[0055] Optionally, the lifting mechanism 43 includes a "U"-shaped positioning plate 431 installed at the tail of the positioning steel plate 42, a micro motor 432 installed in the "U"-shaped positioning plate 431 for generating torque, the micro motor 432 being an existing small-sized drive device, a screw 433 integrally connected to the output shaft of the micro motor 432 and extending upward through the positioning steel plate 42, and a bearing 434 installed at the top of the screw 433 for achieving relative rotation;

[0056] The bearing 434 is installed inside the connecting sleeve 44. After the load plate 1 is adjusted to a horizontal position by the lower adjustment part 2, the three second levels 49 are observed in sequence to determine which side of the steel ring 45 is higher or lower. This drives the micro motor 432 at the corresponding position, which in turn drives the connected screw 433 to rotate and lift or lower the connecting sleeve 44. This ensures that the steel ring 45 can be adjusted to a horizontal position. Based on the lower adjustment part 2, the horizontality of the flange can be finely adjusted to ensure that the flange is aligned with the main gas pipeline without deviation. This greatly improves the installation quality of the gas branch pipe and the main pipe. The bearing 434 dissipates the rotational force of the screw 433, preventing it from driving the connecting sleeve 44 to rotate. This ensures that only the vertical force is transmitted to the connecting sleeve 44, ensuring that the flange can be lifted upward to a position where it can be installed with the main pipeline.

[0057] Optionally, the stabilization group 5 includes a metal block 51 disposed in the base 21 for increasing weight, a thin plate 52 installed at the bottom of the metal block 51, and a plurality of rubber protrusions 53 arrayed on the thin plate 52 for increasing friction.

[0058] Several of the rubber protrusions 53 extend slightly beyond the base 21, ensuring that the weight of the device is increased, thereby strengthening its downward self-weight. At the same time, a large number of rubber protrusions 53 come into contact with the outside, thereby greatly enhancing the friction of the base 21, effectively improving the stability of the device, eliminating the effects of displacement, tilting and shaking, and ensuring high-quality installation.

[0059] Optionally, a quick positioning device for a coke oven gas pipeline flange also includes an elastic band 6 installed on the front side of the load plate 1 and clamping both ends of the first level 3 to reinforce the first level 3, so that the first level 3 is more securely installed on the load plate 1, thereby preventing it from falling and causing damage to the instrument.

[0060] Optionally, a hole 11 is provided in the center of the load plate 1 for external branch pipes to pass through, so that when the branch pipe is too long, its tail can be inserted into the hole 11, so as to prevent the excessively long branch pipe from interfering with the load plate 1 and thus making it impossible to install.

[0061] The top of the steel ring 45 is equipped with a laser emitter 451 for aligning with the external elevation scale. The laser beam emitted by the laser emitter 451 is used to illuminate the elevation scale in a straight line, thereby achieving precise positioning.

[0062] Optionally, the lifting top support clamping part 4 also includes several arc-shaped connecting strips 491 that are sequentially connected to several of the columns 41 and used to connect several of the columns 41 into one unit, thereby ensuring that several columns 41 can better exert the stability performance of the triangle, enhance the stability of the device, and prevent shaking during installation from affecting the docking and installation of the branch pipe and the main pipe.

[0063] Optionally, some of the columns 41 are H-beams. H-beams are a type of profile with a more optimized cross-sectional area distribution and a more reasonable strength-to-weight ratio. They have advantages such as strong bending resistance and light structural weight in all directions, thereby effectively improving the device's impact and collision resistance, ensuring its service life, and making the structure lighter, thus reducing the overall weight and making it more convenient to carry.

[0064] Furthermore, in another embodiment of the invention, a method for using a quick positioning device for a coke oven gas pipeline flange is provided, comprising the following steps:

[0065] Step 1: Assemble all components according to the predetermined positions and assembly requirements. Then, set elevation scale plates at both ends of the coke oven gas main pipe and mark the design elevation of the branch pipe and flange on the scale plates.

[0066] Step 2: Pre-weld the gas branch pipe to the flange, and place the assembled device above the corresponding gas main pipe according to the installation position of the gas branch pipe.

[0067] Step 3: Drive the lower adjustment part 2 and continuously observe the levelness of the load plate 1 with the help of the first level 3 until the load plate 1 is adjusted to a level state;

[0068] Step 4: Insert the flanged gas branch pipe into the hole 11 and align the flange with the steel ring 45. Then, rotate several hand-tightening adjusting bolts 47 to move them towards the flange in the middle until all the hand-tightening adjusting bolts 47 are in contact with the flange, tighten the flange, and fix the flange.

[0069] Step 5: Turn on the laser emitter 451 and use the lifting mechanism 43 to continuously lift the steel ring 45 and the flange upwards until the laser beam emitted by the laser emitter 451 lands at the same point as the installation elevation of the flange on the elevation scale. Then stop the lifting mechanism 43 immediately to complete the alignment of the flange installation elevation. Afterwards, drive the lifting mechanism 43 again to fine-tune the height of the flange surface and use the digital display values ​​of the three second levels (49) to adjust the flatness of the flange to a horizontal state.

[0070] Step Six: After adjustment, weld the branch pipe to the main pipe and install the remaining branch pipes in a continuous manner.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A quick positioning device for a coke oven gas pipeline flange, characterized in that, include: The load-bearing plate (1), the lower adjustment part (2) connected to the bottom of the load-bearing plate (1) and used to adjust the level of the load-bearing plate (1), the first level (3) set on the front side of the load-bearing plate (1) and used to measure the horizontal angle of the load-bearing plate (1) in real time, the lifting top support clamping part (4) set on the load-bearing plate (1) and used to fix and adjust the external flange, and the stabilizing group (5) set in the lower adjustment part (2) and located at the four corners of its bottom surface for weighting and anti-slip, wherein The spiral-tightened lifting top support clamp (4) can be pushed forward inward to abut against the outer flange with the inner top; The lifting top support clamping part (4) can be lifted at a single point or simultaneously to partially lift or lift the outer flange as a whole; The lifting top support clamping part (4) includes several columns (41) vertically installed in a triangular shape on the load plate (1), positioning steel plates (42) in an "L" shape and respectively installed on the top of the columns (41) for providing an installation positioning reference for external objects, lifting mechanisms (43) respectively set at the tail of the positioning steel plates (42), connecting sleeves (44) respectively connected to the lifting mechanisms (43), steel rings (45) installed on the connecting sleeves (44), and circumferentially installed on the steel rings (45). 5) Several reference pads (46) on the side and used to create a reference surface, a hand-tightening adjusting bolt (47) that spirals through several of the reference pads (46) and the steel ring (45) and abuts against the outer flange, three connecting blocks (48) circumferentially mounted on the side of the steel ring (45) and gapped between several of the connecting sleeves (44) and several of the reference pads (46), and three second levels (49) mounted on the three connecting blocks (48) and used to display the level of the steel ring (45) in real time. Several of the hand-tightening adjusting bolts (47) converge toward the center of the steel ring (45).

2. The quick positioning device for a coke oven gas pipeline flange as described in claim 1, characterized in that, The lower adjustment part (2) includes a base (21) located directly below the load plate (1), four screw jacks (22) arrayed on the base (21) for generating vertical force, and two double-headed transmission rods (23) respectively installed on the output shafts of the two screw jacks (22) for transmitting power. The two double-headed transmission rods (23) are connected to the four corner points on the bottom surface of the load plate (1).

3. The quick positioning device for a coke oven gas pipeline flange as described in claim 2, characterized in that, The lifting mechanism (43) includes a "U"-shaped positioning plate (431) installed at the tail of the positioning steel plate (42), a micro motor (432) installed in the "U"-shaped positioning plate (431) and used to generate torque, a screw (433) integrally connected to the output shaft of the micro motor (432) and extending upward through the positioning steel plate (42), and a bearing (434) installed at the top of the screw (433) and used to achieve relative rotation. The bearing (434) is installed inside the connecting sleeve (44).

4. The quick positioning device for a coke oven gas pipeline flange as described in claim 3, characterized in that, The stabilization group (5) includes a metal block (51) disposed in the base (21) for increasing weight, a thin plate (52) mounted on the bottom of the metal block (51), and a plurality of rubber bumps (53) arrayed on the thin plate (52) for increasing friction. Several of the rubber protrusions (53) extend slightly out of the base (21).

5. The quick positioning device for a coke oven gas pipeline flange as described in claim 4, characterized in that, A quick positioning device for a coke oven gas pipeline flange also includes an elastic band (6) installed on the front side of the load plate (1) and clamping the two ends of the first level (3) to reinforce the first level (3).

6. The quick positioning device for a coke oven gas pipeline flange as described in claim 5, characterized in that, The load plate (1) has a hole (11) in the center for external branch pipes to pass through. The top of the steel ring (45) is equipped with a laser emitter (451) for aligning with an external elevation scale.

7. The quick positioning device for a coke oven gas pipeline flange as described in claim 6, characterized in that, The lifting top support clamping part (4) also includes a number of arc-shaped connecting strips (491) that are connected end to end to a number of the columns (41) and used to connect the columns (41) into one unit.

8. The quick positioning device for a coke oven gas pipeline flange as described in claim 7, characterized in that, Some of the columns (41) are H-beams.

9. The method of using the quick positioning device for a coke oven gas pipeline flange as described in any one of claims 1-8 is as follows: Step 1: Assemble all components according to the predetermined positions and assembly requirements. Then, set elevation scale plates at both ends of the coke oven gas main pipe and mark the design elevation of the branch pipe and flange on the scale plates. Step 2: Pre-weld the gas branch pipe to the flange, and place the assembled device above the corresponding gas main pipe according to the installation position of the gas branch pipe. Step 3: Drive the lower adjustment part (2) and continuously observe the levelness of the load plate (1) with the help of the first level (3) until the load plate (1) is adjusted to a level state; Step 4: Insert the flanged gas branch pipe into the hole (11) and align the flange with the steel ring (45). Then rotate several hand-tightening adjusting bolts (47) to move them towards the flange in the middle until all the hand-tightening adjusting bolts (47) are in contact with the flange, tighten the flange, and fix the flange. Step 5: Turn on the laser emitter (451) and use the lifting mechanism (43) to continuously lift the steel ring (45) and flange upwards until the laser beam emitted by the laser emitter (451) coincides with the installation elevation of the flange on the elevation scale. Then stop the lifting mechanism (43) immediately to complete the alignment of the flange installation elevation. Then drive the lifting mechanism (43) again to fine-tune the height of the flange surface and use the digital display values ​​of the three second levels (49) to adjust the flatness of the flange to a horizontal state. Step Six: After adjustment, weld the branch pipe to the main pipe and install the remaining branch pipes in a continuous manner.

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