Quick opening and closing assembly for overheater overhaul pipeline

Abstract

The utility model discloses a quick opening and closing assembly for a superheater maintenance pipeline, and relates to the technical field of maintenance pipeline opening or closing, grooves A are formed in the top surface and the bottom surface of the right end of a rotating rod, the two grooves A are arranged oppositely up and down, and grooves B are formed in the top surface and the bottom surface of the right end of the rotating rod; an annular plate positioned between the groove A and the groove B is also welded on the cylindrical surface of the rotating rod; a clamping assembly used for clamping and fixing the rotating rod is arranged on the top surface of the overhauling pipeline, the clamping assembly comprises a rack fixedly arranged on the top surface of the overhauling pipeline, a lead screw located on the left side of a polished rod is further rotationally installed in the rack, and the polished rod is sleeved with the right ends of two nuts; connecting plates extending leftwards are welded to the left ends of the two nuts correspondingly, and square clamping blocks are welded to the two connecting plates correspondingly. The utility model has the beneficial effects that the working intensity of workers is greatly reduced, and the opening or closing efficiency of a maintenance pipeline is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of starting or closing the maintenance pipeline, especially a quick opening and closing assembly of superheater maintenance pipeline. BACKGROUND

[0002] The function of the superheater is to heat the steam discharged by the boiler by using the hot flue gas discharged by the boiler to obtain high-temperature steam, and the high-temperature steam can be delivered to the power generation system for power generation. Figures 1-2 As shown in the figure, a maintenance pipeline 2 is fixedly arranged on the left side wall of the superheater 1 and communicates with the inner cavity of the superheater 1, and a cover plate 4 is fixedly connected to the left end face of the maintenance pipeline 2 by a plurality of screws 3.

[0003] When the superheater 1 is used for a period of time, workers need to regularly maintain the heat exchange pipes 5 inside the superheater 1, and the specific maintenance method is as follows: the workers first unscrew the plurality of screws 3 between the cover plate 4 and the maintenance pipeline 2, and then remove the cover plate 4 from the maintenance pipeline 2 to open the maintenance pipeline 2, as shown in the figure. Figure 3 When removed, the workers pass the detection instrument through the maintenance pipeline 2 to detect the heat exchange pipes 5 inside the superheater 1 to determine whether the heat exchange pipes 5 have a leakage phenomenon, and the movement direction of the detection instrument is shown by the arrow in the figure. Figure 3 When the maintenance is completed, the workers fix the cover plate 4 on the maintenance pipeline 2 by the plurality of screws 3 to close the maintenance pipeline 2.

[0004] However, every time the workers go to maintain the heat exchange pipes 5, they need to manually unscrew the plurality of screws 3, and after the maintenance, they also need to fix the cover plate 4 on the maintenance pipeline 2 by tightening the plurality of screws; the number of screws 3 is as many as 8-12, and the way of manually unscrewing or tightening the screws 3 one by one increases the working intensity of the workers and also increases the opening or closing time of the maintenance pipeline 2, thereby reducing the opening or closing efficiency of the maintenance pipeline 2.

[0005] Therefore, there is an urgent need for an opening and closing assembly that greatly reduces the working intensity of workers and greatly improves the opening or closing efficiency of the maintenance pipeline. UTILITY MODEL CONTENTS

[0006] The utility model aims to overcome the shortcomings of the prior art and provide a quick opening and closing assembly of superheater maintenance pipeline that greatly reduces the working intensity of workers and greatly improves the opening or closing efficiency of the maintenance pipeline.

[0007] The utility model discloses a quick opening and closing assembly of superheater overhauling pipeline, it includes the fixed seat of the overhauling pipeline top surface fixed in superheater, the horizontal setting rotating lever of sliding installation is arranged in the fixed seat, the left end portion on rotating lever is welded with the cover plate, the cover plate closes the overhauling pipeline, the recess A of top and bottom surface on rotating lever right end portion all is set up, two recess A upside down opposite setting, the recess B of top and bottom surface on rotating lever right end portion all is set up, the recess B is located the right side of recess A, and two recess B upside down opposite setting, the cylindrical surface of rotating lever still is welded with the annular plate between recess A and recess B,

[0008] The top surface of the overhauling pipeline is provided with a clamping assembly for clamping and fixing the rotating lever, the clamping assembly is located on the right side of the fixed seat, and the clamping assembly comprises a rack fixed on the top surface of the overhauling pipeline, a vertical light rod is fixed in the rack, a lead screw is rotatably installed in the rack and located on the left side of the light rod, a forward external thread and a reverse external thread are provided on the lead screw, and nuts are threadedly connected to the forward external thread and the reverse external thread, respectively, and the right end portions of the two nuts are sleeved on the light rod.

[0009] Left end portions of the two nuts are welded with leftward extending connecting plates, square clamping blocks are welded on the two connecting plates, respectively, the two square clamping blocks are embedded into the two recesses A, and the two square clamping blocks clamp and fix the rotating lever under the thread connection force of the two nuts and the lead screw.

[0010] A horizontally arranged guide hole is formed in the fixed seat, and the rotating lever is arranged in the guide hole.

[0011] The diameter of the guide hole is equal to the diameter of the rotating lever.

[0012] The top end portion of the lead screw extends upward outside the rack, and a knob is fixed on the extending end.

[0013] The recess A and the recess B are rectangular, and the outer contours of the square clamping blocks are matched with the recess A and the recess B.

[0014] Through holes are formed in the right end portions of the two nuts, and the nuts are sleeved on the light rod through the through holes.

[0015] The utility model has the advantages of greatly reducing the working intensity of workers and greatly improving the opening or closing efficiency of the overhauling pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic view of certain superheater;

[0017] Figure 2 It is Figure 1 The left view of

[0018] Figure 3 Schematic view for opening the maintenance pipe;

[0019] Figure 4 Structure schematic view of the utility model;

[0020] Figure 5 I part local enlarged view of Figure 4

[0021] Figure 6 Structure schematic view of the clamping assembly;

[0022] Figure 7 Connection schematic view of the cover plate, rotating rod and annular plate;

[0023] Figure 8 Main section schematic view of Figure 7

[0024] Connection schematic view of the connecting plate and square clamping block; Figure 9

[0025] Two square clamping blocks respectively from the two recesses A in the rotating rod are shown in the schematic diagram; Figure 10

[0026] Cover plate and maintenance pipe are shown in the schematic diagram of separation; Figure 11

[0027] Cover plate is shown in the schematic diagram of rotating to the upper of maintenance pipe; Figure 12

[0028] Two square clamping blocks respectively embed in the two recesses B of rotating rod are shown in the schematic diagram; Figure 13 In the drawing:

[0029] 1- superheater, 2- maintenance pipe, 3- screw, 4- cover plate, 5- heat exchange pipe;

[0030] 6- fixed seat, 7- rotating rod, 8- recess A, 9- recess B, 10- annular plate;

[0031] 11- clamping assembly, 12- rack, 13- light pole, 14- screw rod, 15- nut, 16- connecting plate, 17- square clamping block, 18- knob.

[0032] DETAILED DESCRIPTION The protection scope of the utility model is not limited to the following described:

[0033] The utility model is further described below in combination with the drawings, and the protection scope of the utility model is not limited to the following described:

[0034] As Figures 4-9 ​As shown, a quick opening and closing assembly of an overheat repair pipe, which comprises a fixed seat 6 fixed on the top surface of the overheat repair pipe 2, a rotating rod 7 horizontally arranged in the fixed seat 6, a cover plate 4 welded on the left end of the rotating rod 7, the cover plate 4 closes the repair pipe 2, recesses A 8 are formed on the top and bottom surfaces of the right end of the rotating rod 7, the two recesses A 8 are arranged oppositely, recesses B 9 are formed on the top and bottom surfaces of the right end of the rotating rod 7, the recesses B 9 are located on the right side of the recesses A 8, and the two recesses B 9 are arranged oppositely, an annular plate 10 is welded on the cylindrical surface of the rotating rod 7 between the recesses A 8 and the recesses B 9, a guide hole is formed in the fixed seat 6, and the rotating rod 7 is arranged in the guide hole.

[0035] A clamping assembly 11 is arranged on the top surface of the repair pipe 2 for clamping and fixing the rotating rod 7, the clamping assembly 11 is located on the right side of the fixed seat 6, the clamping assembly 11 comprises a rack 12 fixed on the top surface of the repair pipe 2, a light rod 13 vertically arranged in the rack 12, a lead screw 14 rotatably arranged in the rack 12 on the left side of the light rod 13, a forward external thread and a reverse external thread arranged on the lead screw 14, two nuts 15 threadedly connected with the forward external thread and the reverse external thread respectively, and the right end of the two nuts 15 is sleeved on the light rod 13.

[0036] The left end of the two nuts 15 is welded with a leftward extending connecting plate 16, the two connecting plates 16 are welded with square clamping blocks 17, and the two square clamping blocks 17 are embedded into the two recesses A 8, under the threaded connection force of the two nuts 15 and the lead screw 14, the two square clamping blocks 17 clamp and fix the rotating rod 7.

[0037] The recesses A 8 and the recesses B 9 are rectangular and match the outer contour of the square clamping blocks 17. The right end of the two nuts 15 is provided with a through hole, and the nut 15 is sleeved on the light rod 13 through the through hole.

[0038] The specific operation steps of the worker opening the repair pipe 2 to repair the heat exchange pipe 5 in the overheat 1 are as follows:

[0039] S1, the worker rotates the knob 18, the knob 18 drives the screw rod 14 to rotate, the nut 15 located on the upper side of the screw rod 14 moves linearly upwards along the screw rod 14, and drives the connecting plate 16 and the square clamping block 17 on it to move upwards synchronously, at the same time, the nut 15 located on the lower side of the screw rod 14 moves linearly downwards along the screw rod 14, and drives the connecting plate 16 and the square clamping block 17 on it to move downwards synchronously, when the rotating knob 18 reaches a certain number of turns, the two square clamping blocks 17 are respectively out of the two grooves A8 in the rotating rod 7, as shown in Figure 10 , and then the worker no longer rotates the knob 18;

[0040] S2, the worker pulls the cover plate 4 to the left, at the same time, the cover plate 4 drives the rotating rod 7 to move to the left, the rotating rod 7 drives the annular plate 10 to move to the left synchronously, when the annular plate 10 abuts against the right end surface of the fixed seat 6, the cover plate 4 is just separated from the maintenance pipeline 2, as shown in Figure 11 , as shown in Figure 11 , at the same time, the two grooves B9 on the rotating rod 7 are respectively opposite to the two square clamping blocks 17;

[0041] S3, the worker rotates the cover plate 4 upwards, the cover plate 4 drives the rotating rod 7 to rotate synchronously, the rotating rod 7 and the annular plate 10 rotate synchronously, when the cover plate 4 rotates to the upper side of the maintenance pipeline 2, as shown in Figure 12 , the worker holds the cover plate 4 without moving, and then the worker reversely rotates the knob 18, the knob 18 drives the screw rod 14 to reversely rotate, the two nuts 15 move in opposite directions along the length direction of the screw rod 14, when the rotating knob 18 reaches a certain number of turns, the two square clamping blocks 17 are respectively embedded into the two grooves B9 of the rotating rod 7, as shown in Figure 13 , and the rotating rod 7 is clamped and fixed, and then the cover plate 4 is fixed, so that the maintenance pipeline 2 is opened;

[0042] S4, when the cover plate 4 is fixed, the worker puts the detection instrument through the maintenance pipeline 2 to detect the heat exchange pipe 5 in the superheater 1, to determine whether the heat exchange pipe 5 has a leakage phenomenon.

[0043] When the worker wants to close the maintenance pipeline 2, the worker's operation steps are as follows:

[0044] S5, the worker rotates the knob 18, so that the square clamping block 17 is out of the groove B9;

[0045] S6, the worker rotates the cover plate 4 downwards, so that the cover plate 4 is opposite to the maintenance pipeline 2, and then pushes the cover plate 4 to the right, the cover plate 4 drives the rotating rod 7 to move to the right, until the cover plate 4 covers the maintenance pipeline 2; finally, the worker rotates the knob 18, so that the two square clamping blocks 17 are respectively embedded into the two grooves A8 of the rotating rod 7, so as to clamp and fix the rotating rod 7 again, and then fix the cover plate 4, so as to realize the closing of the maintenance pipeline 2, as shown inFigures 3-4 as shown.

[0046] Wherein, from steps S1~S3, the worker only needs to rotate the knob 18 first, so that the square clamping block 17 is withdrawn from the groove A8 of the rotating rod 7, then pulls the cover plate 4 to the left, so that the cover plate 4 is just separated from the maintenance pipeline 2, then rotates the cover plate 4 upwards, so that the cover plate 4 is moved above the maintenance pipeline 2, and finally reversely rotates the knob 18, so that the square clamping block 17 is embedded in the groove B9, thereby fixing the rotating rod 7 and the cover plate 4, thereby realizing the quick opening of the maintenance pipeline 2, thereby facilitating the worker to overhaul the heat exchange pipe 5 in the superheater 1.

[0047] Therefore, the quick opening and closing assembly does not need the worker to manually unscrew the plurality of screws 3 between the cover plate 4 and the maintenance pipeline 2 to open the maintenance pipeline 2, which not only reduces the working strength of the worker, but also shortens the opening time of the maintenance pipeline 2, thereby greatly improving the opening efficiency of the maintenance pipeline 2.

[0048] In addition, in steps S5~S6, the worker only needs to operate the rotating knob 18 and the cover plate 4, so that the rotating rod 7 and the cover plate 4 are fixed by the square clamping block 17, thereby sealing the maintenance pipeline 2, thereby realizing the quick closing of the maintenance pipeline 2, without the worker manually tightening the plurality of screws 3 between the cover plate 4 and the maintenance pipeline 2 to close the maintenance pipeline 2, which not only reduces the working strength of the worker, but also shortens the closing time of the maintenance pipeline 2, thereby greatly improving the closing efficiency of the maintenance pipeline 2.

[0049] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A quick opening and closing assembly for a superheater maintenance pipe, characterized in that: It includes the fixed seat (6) fixed on the top surface of the overhauling pipe (2) of the superheater (1), the horizontal rotating rod (7) is slidably installed in the fixed seat (6), the left end of the rotating rod (7) is welded with the cover plate (4), the cover plate (4) closes the overhauling pipe (2), the top and bottom surfaces of the right end of the rotating rod (7) are both provided with the groove A (8), the two grooves A (8) are oppositely arranged, the top and bottom surfaces of the right end of the rotating rod (7) are both provided with the groove B (9), the groove B (9) is located at the right side of the groove A (8), and the two grooves B (9) are oppositely arranged; the cylindrical surface of the rotating rod (7) is further welded with the annular plate (10) located between the groove A (8) and the groove B (9); The top surface of the overhauling pipe (2) is provided with the clamping assembly (11) for clamping and fixing the rotating rod (7), the clamping assembly (11) is located at the right side of the fixed seat (6), the clamping assembly (11) includes the rack (12) fixed on the top surface of the overhauling pipe (2), the vertical light rod (13) is fixed in the rack (12), the screw rod (14) is rotatably installed in the left side of the light rod (13) in the rack (12), the screw rod (14) is provided with the forward external thread and the reverse external thread, the screw rod (14) is respectively screwed with the nut (15) on the forward external thread and the reverse external thread, the right ends of the two nuts (15) are both sleeved on the light rod (13); The left ends of the two nuts (15) are both welded with the left extending connecting plate (16), the two connecting plates (16) are both welded with the square clamping block (17), the two square clamping blocks (17) are respectively embedded into the two grooves A (8), under the threaded connection force of the two nuts (15) and the screw rod (14), the two square clamping blocks (17) clamp and fix the rotating rod (7).

2. The quick open and close assembly of a superheater maintenance pipe way according to claim 1, characterized in that: The fixed seat (6) is provided with the horizontal guide hole, and the rotating rod (7) is arranged in the guide hole.

3. The quick open and close assembly of a superheater maintenance pipe way according to claim 2, characterized in that: The diameter of the guide hole is equal to the diameter of the rotating rod (7).

4. The quick open and close assembly of a superheater maintenance pipe way according to claim 1, characterized in that: The top end of the screw rod (14) extends upward outside the rack (12), and the extending end is fixed with the knob (18).

5. The quick open and close assembly of a superheater access pipe according to claim 1, characterized in that: The groove A (8) and the groove B (9) are both rectangular, and the outer contour of the square clamping block (17) is matched.

6. The quick open and close assembly of a superheater access pipe according to claim 1, characterized in that: The right ends of the two nuts (15) are both provided with the through hole, and the nut (15) is sleeved on the light rod (13) through the through hole.

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