CN116289818B - Tunnel plugging device with valve adjustment and use method - Google Patents
Tunnel plugging device with valve adjustment and use method Download PDFInfo
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- CN116289818B CN116289818B CN202310257970.9A CN202310257970A CN116289818B CN 116289818 B CN116289818 B CN 116289818B CN 202310257970 A CN202310257970 A CN 202310257970A CN 116289818 B CN116289818 B CN 116289818B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
本发明公开了一种带阀门调节的隧洞封堵装置，属于水电站工程技术领域，包括：带有气囊充气管的外表面多凸起的环形密封气囊，所述环形密封气囊的内部从进水端到出水端分别装配有辅助堵水机构和支撑机构，所述支撑机构远离堵水机构的一端装配有阀门机构；本发明还公开了一种带阀门调节的隧洞封堵装置的使用方法；本发明设置堵水机构和阀门机构，能够使隧洞在封堵的条件下仍具有过流条件。
The present invention discloses a tunnel plugging device with valve adjustment, which belongs to the technical field of hydropower station engineering, and comprises: an annular sealing airbag with multiple protrusions on the outer surface of an airbag inflation tube, the interior of the annular sealing airbag is respectively equipped with an auxiliary water plugging mechanism and a supporting mechanism from the water inlet end to the water outlet end, and the end of the supporting mechanism away from the water plugging mechanism is equipped with a valve mechanism; the present invention also discloses a method for using the tunnel plugging device with valve adjustment; the present invention is provided with a water plugging mechanism and a valve mechanism, so that the tunnel can still have a flow condition under the condition of plugging.
Description
Technical Field
The invention belongs to the technical field of hydropower station engineering, and particularly relates to a tunnel plugging device with valve adjustment and a using method.
Background
In the existing engineering, the temporary plugging mode of the tunnel is divided into two modes, one is that the tunnel needs to flow through before plugging, the downstream ecological flow is guaranteed, and the other is that the tunnel is fully-closed and plugged, and the downstream ecological flow is guaranteed through the overflow of the bottom hole of the dam body tunnel.
The temporary plugging structure of the tunnel is generally formed by pouring concrete, but has the defects that heat cannot be rapidly dissipated when the concrete is poured, so that the concrete is slowly solidified to influence the plugging speed of the tunnel, the concrete structure or the retaining wall at the reserved hole is difficult to break, the nearby structure is easy to break, and meanwhile, large economic waste is caused.
In view of the above, a tunnel plugging device with valve adjustment and a use method thereof are designed, and static hydraulic pressure environment is created for the downstream of the tunnel plugging device, and meanwhile, the condition of overcurrent under plugging condition is guaranteed.
Disclosure of Invention
To solve the problems set forth in the background art. The invention provides a tunnel plugging device with valve adjustment and a use method thereof, which have the characteristics of creating a static hydraulic environment for the downstream of the device and ensuring that the device still has an overcurrent condition under plugging conditions.
The invention further aims to provide a using method of the tunnel plugging device with the valve adjustment.
The tunnel plugging device with the valve adjustment comprises an annular sealing air bag with a plurality of bulges on the outer surface of an air bag inflation pipe, wherein an auxiliary water plugging mechanism and a supporting mechanism are respectively arranged in the annular sealing air bag from a water inlet end to a water outlet end, and a valve mechanism is arranged at one end, far away from the auxiliary water plugging mechanism, of the supporting mechanism;
The auxiliary water blocking mechanism comprises a hollowed-out boss type sealing end cover nested in the water inlet end of the annular sealing air bag;
The supporting mechanism comprises a shaft sleeve which is placed in the annular sealing air bag and fixedly connected with the water outlet end of the sealing end cover through a connecting bolt, two arc-shaped supporting plates are placed in the annular sealing air bag and positioned on the outer side of the shaft sleeve, and a supporting rod mechanism with expansion and contraction functions is assembled between the two arc-shaped supporting plates and the shaft sleeve;
the valve mechanism comprises a pipeline connector positioned on the water outlet side of the annular sealing air bag, an electromagnetic block is placed between the pipeline connector and one end, far away from the sealing end cover, of the shaft sleeve, a valve shell formed by a valve cover and a valve body through fixedly connecting with one end, far away from the shaft sleeve, of the pipeline connector, a sealing ring is fixedly connected with the top end of the valve shell, a valve rod is placed above the sealing ring, a handle is fixedly connected with the top end of the valve rod, the bottom end of the valve rod sequentially penetrates through the sealing ring, the valve cover and the valve body to extend into the valve body, a ball core matched with the inner wall of the valve body to realize opening and closing is fixedly connected with the inner wall of the valve body, and the valve rod is connected with the penetrating section of the valve cover and the valve body through a bearing.
Preferably, a steel wire sealing ring is connected between one side of the sealing end cover, which is close to the water inlet end of the annular sealing air bag, and an annular spring tensioning ring is connected between one side of the sealing end cover, which is close to the water outlet end of the annular sealing air bag, and the annular sealing air bag in a sealing way.
Preferably, the supporting rod mechanism comprises two first frames, three separation type bearing blocks and two second frames, wherein the two first frames are sequentially fixedly connected to the outer wall of the shaft sleeve along the direction from the water inlet end to the water outlet end of the annular sealing air bag, the three separation type bearing blocks are connected to the outer wall of the shaft sleeve in a sliding mode, the three separation type bearing blocks are fixedly connected to the outer wall of the shaft sleeve, the two second frames are fixedly connected to the outer wall of the shaft sleeve, two rocking rods are arranged on one sides of the first frames and the second frames in parallel, an air bag supporting rod is arranged on the other side of the separation type sliding blocks in parallel, a sliding through groove transverse rod is arranged on one side, far away from the first frames and the second frames, of each rocking rod, a driving separation type bearing block is assembled between the first frames and the second frames, the adjacent rocking rods with the corresponding separation type bearing blocks, the driving mechanism is arranged between the rocking rods with the arc-shaped supporting plates, the separation type sliding blocks and the air bag supporting rods, and the rotating shafts between the separation type bearing blocks are connected between the rocking blocks and the separation type bearing blocks with the sliding through grooves.
Preferably, the driving mechanism comprises a supporting plate fixedly connected to the outer wall of the shaft sleeve and located on one side of the separating type bearing seat away from the separating type sliding block, a motor is fixedly connected to the side wall of the supporting plate away from the separating type bearing seat through a connecting screw, a shaft coupler is sleeved on the other side of the shaft coupler, a stud is arranged in the inner part of one side of the shaft coupler away from the motor output shaft, the shaft coupler and the shaft coupler are fixedly connected through a set screw, one end of the stud away from the shaft coupler penetrates through the separating type bearing seat and extends to the other side of the shaft coupler and is in threaded connection with the separating type sliding block, a sleeve is fixedly connected to the inner wall of a penetrating section of the separating type bearing seat, the shaft coupler is connected with the sleeve in a rotating mode through a bearing, and the separating type sliding block is fixedly connected with the adjacent separating type sliding block.
Preferably, the device further comprises a tunnel, wherein the annular sealing air bag is arranged in the tunnel, and the contact with the tunnel is realized by the friction force between the annular sealing air bag and the wall of the tunnel.
Preferably, the leak detection mechanism is assembled between the pipeline connector and the tunnel, the leak detection mechanism comprises a tunnel fixing flange fixedly connected with the end part of the tunnel through bolts and a vacuum pipe fixedly connected on the pipeline connector, the end wall, close to the tunnel, of the tunnel fixing flange is fixedly connected with a tunnel sealing ring, the end wall, far away from the tunnel, of the tunnel fixing flange is fixedly connected with a flexible sealing bag between the pipeline connector and the end wall, and an inflation port of the airbag inflation pipe penetrates through the pipeline connector to extend to the outside so as to be convenient to inflate.
The application method of the tunnel plugging device with the valve adjustment comprises the following steps:
s1, before the device is blocked, the device is plugged into a tunnel by using an engineering crane;
s2, when the device is plugged, the annular sealing air bag is inflated through the air bag inflation pipe until the outer surface of the annular sealing air bag is tightly contacted with the inner wall of the tunnel, the inflation of the air bag inflation pipe is stopped, the motor is started, the output shaft is driven to rotate positively, the output shaft of the motor drives the stud to rotate positively, in the forward rotation process of the stud, the connected split sliding block moves on the stud towards the direction close to the sealing end cover, the connected split sliding block drives the two split sliding blocks connected with the stud to move in the same direction, the two split sliding blocks drive the two air bag supporting rods connected in a rotating way to move in the same direction, the other end of the two air bag supporting rods moves upwards in the moving process of the two air bag supporting rods, and meanwhile, the two arc supporting plates connected in a rotating way are driven to move upwards in the direction close to the sealing end cover until the two air bag supporting rods are contacted with the two arc supporting rods, and the motor stops driving, at the moment, the air bag supporting rods and the arc supporting plates compress the annular sealing air bag, the contact positive pressure between the annular sealing air bag and the tunnel wall can be increased, and the sealing performance between the annular sealing air bag and the tunnel is improved;
S3, in the process, when the rocker connected with the airbag supporting rod in a rotating way drives the arc-shaped supporting plate to move, the two rockers on the two second frames move along with the arc-shaped supporting plate synchronously, so that the movement stability of the arc-shaped supporting plate is improved, namely the sealing performance between the annular sealing airbag and the tunnel is further improved;
And S4, when an overcurrent condition is required in the plugging process of the device, the handle drives the valve rod to rotate so as to drive the ball core to rotate, and the flow of the valve is regulated, so that overcurrent can be realized through the sealing end cover, the shaft sleeve and the valve shell formed by fixedly connecting the valve cover and the valve body.
Preferably, in step S1, after the device is plugged into the tunnel, the air tightness of the annular sealing air bag is required to be detected, the tunnel fixing flange is fixed at the end of the tunnel through the bolt, the sealing performance between the tunnel fixing flange and the tunnel is improved by the tunnel sealing ring, a closed cavity is formed between the annular sealing air bag and the tunnel, the air in the closed cavity is emptied through the vacuum tube, whether the flexible sealing air bag is contracted or not is observed after the pressure is stabilized for 10min, the vacuum degree change in the closed cavity is checked, then the air is pumped into the closed cavity, the air flow in the closed cavity is tested by using the air flow tester, whether the flexible sealing air bag is obviously bulged or not is observed, if the flexible sealing air bag is not contracted or bulged, the detection is qualified, and the plugging operation can be performed.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention is provided with the water blocking mechanism and the valve mechanism, so that the tunnel still has an overcurrent condition under the blocking condition.
2. The plugging mechanism comprises the corrugated variable-diameter elastic air bag, the sealing end cover, the steel wire sealing ring and the annular spring tensioning ring, so that the shearing force of the annular sealing air bag can be effectively reduced, and the thickness and the overall plugging quality of the annular sealing air bag are improved.
3. The invention is provided with the shaft sleeve, the arc-shaped supporting plate and the supporting rod mechanism, can provide supporting axial force for the annular sealing air bag, increases friction force between the annular sealing air bag and the tunnel wall, and improves plugging performance of the annular sealing air bag.
4. The invention is provided with the air tightness detection mechanism, so that the air tightness of the annular sealing air bag can be detected before plugging, and the plugging effect can be determined, so that the plugging effect of the annular sealing air bag can be ensured.
Drawings
FIG. 1 is a schematic view of the assembled device of the present invention;
FIG. 2 is a schematic view of the structure of the axial section of the present invention;
FIG. 3 is a schematic view of the structure of the annular seal airbag of the present invention;
FIG. 4 is a schematic view of the structure of the shaft sleeve of the present invention;
FIG. 5 is a schematic view of the structure of the arc-shaped support plate of the present invention;
FIG. 6 is a schematic view of a split slider according to the present invention;
FIG. 7 is a schematic view of a split bearing block according to the present invention;
FIG. 8 is a schematic view showing the structure of an air bag support bar according to the present invention;
FIG. 9 is an enlarged view of the screw drive of the present invention;
FIG. 10 is a schematic view of the structure of the tunnel air seal of the present invention;
FIG. 11 is a schematic illustration of the annular sealing bladder occlusion procedure.
In the figure, 1, an annular sealing air bag, 2, a sealing end cover, 3, an air bag supporting rod, 4, a shaft sleeve, 5, a first frame, 6, a separation type sliding block, 7, a cross rod with a sliding through groove, 8, a separation type bearing seat, 9, an arc-shaped supporting plate, 10, a second frame, 11, a rocker, 12, an air bag charging pipe, 13, a tunnel sealing ring, 14, a tunnel fixing flange, 15, a stud, 16, a bearing, 17, a sleeve, 18, a coupler, 19, a set screw, 20, a supporting plate, 21, a connecting screw, 22, a motor, 23, a tunnel, 24, a steel wire sealing ring, 25, an annular spring tensioning ring, 26, a connecting bolt, 27, a pipeline connector, 28, an electromagnetic block, 29, a flexible sealing bag, 30, a valve cover, 31, a valve body, 32, a ball core, 33, a sealing ring, 34, a valve rod, 35, a handle, 36 and a vacuum tube.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to figures 1-11, the invention provides a tunnel plugging device with valve adjustment, which comprises an annular sealing air bag 1 with a plurality of bulges on the outer surface of an air bag inflation tube 12, wherein an auxiliary water plugging mechanism and a supporting mechanism are respectively arranged in the annular sealing air bag 1 from a water inlet end to a water outlet end, and a valve mechanism is arranged at one end of the supporting mechanism far away from the auxiliary water plugging mechanism;
the auxiliary water shutoff mechanism comprises a hollowed-out boss type sealing end cover 2 nested in the water inlet end of the annular sealing air bag 1;
The supporting mechanism comprises a shaft sleeve 4 which is placed in the annular sealing air bag 1 and fixedly connected with the water outlet end of the sealing end cover 2 through a connecting bolt 26, two arc-shaped supporting plates 9 are placed in the annular sealing air bag 1 and positioned on the outer side of the shaft sleeve 4, and a supporting rod mechanism with expansion and contraction functions is assembled between the two arc-shaped supporting plates 9 and the shaft sleeve 4;
The valve mechanism comprises a pipeline connector 27 positioned on the water outlet side of the annular sealing air bag 1, an electromagnetic block 28 is arranged between the pipeline connector 27 and one end, far away from the sealing end cover 2, of the shaft sleeve 4, a valve shell formed by fixedly connecting a valve cover 30 and a valve body 31 is fixedly connected to one end, far away from the shaft sleeve 4, of the pipeline connector 27, a sealing ring 33 is fixedly connected to the top end of the valve shell, a valve rod 34 is arranged above the sealing ring 33, a handle 35 is fixedly connected to the top end of the valve rod 34, the bottom end of the valve rod 34 sequentially penetrates through the sealing ring 33, the valve cover 30 and the valve body 31 to extend into the valve body 31, a ball core 32 which is matched with the inner wall of the valve body 31 to realize opening and closing is fixedly connected to the bottom end of the valve rod 34 through a bearing and the penetrating section of the valve cover 30 and the valve body 31.
Specifically, a steel wire sealing ring 24 is connected between one side of the sealing end cover 2, which is close to the water inlet end of the annular sealing air bag 1, and the annular sealing air bag 1 in a sealing manner, and an annular spring tensioning ring 25 is connected between one side of the sealing end cover 2, which is close to the water outlet end of the annular sealing air bag 1, and the annular sealing air bag 1 in a sealing manner.
Specifically, the brace mechanism includes two first frames 5 that are fixedly connected in proper order on the outer wall of the shaft sleeve 4 along the direction from the water inlet end to the water outlet end of the annular sealing air bag 1, three separation type sliding blocks 6 that are connected in a sliding manner on the outer wall of the shaft sleeve 4, three separation type bearing blocks 8 that are fixedly connected on the outer wall of the shaft sleeve 4, and two second frames 10 that are fixedly connected on the outer wall of the shaft sleeve 4, two rocking bars 11 are placed on one side of the first frames 5 and the second frames 10 in parallel, an air bag supporting rod 3 is placed on the other side of the separation type sliding blocks 6 in parallel, a sliding through groove cross rod 7 is placed on one side, away from the first frames 5 and the second frames 10, of the two rocking bars 11, between each of the first frames 5 and the second frames 10 and the adjacent rocking bars 11 and the sliding through groove cross rod 7, between each rocking bar 11 and the arc-shaped supporting plate 9, between each separation type sliding block 6 and the adjacent air bag supporting rod 3, between each rocking bar 11 near one side of the air bag supporting rods 3 and each separation type bearing block 8 and the corresponding sliding through groove cross rod 7 are connected in a rotating manner, and one end of each separation type sliding block 6 and each sliding block 3 is provided with a corresponding driving shaft 6, and a sliding through groove 7 is arranged between each separation type sliding block and the separation type sliding block 6.
Specifically, the actuating mechanism includes the backup pad 20 that is located separation type bearing frame 8 on the external wall of sleeve 4 and keeps away from separation type slider 6 one side, the lateral wall that separation type bearing frame 8 was kept away from to backup pad 20 has motor 22 through connecting screw 21 rigid coupling, motor 22's output shaft runs through backup pad 20 and extends to the opposite side cover and be equipped with shaft coupling 18, be equipped with double-screw bolt 15 in the inside that shaft coupling 18 kept away from motor 22 output shaft one side, between motor 22's output shaft and shaft coupling 18 and between shaft coupling 18 and the double-screw bolt 15 pass through holding screw 19 rigid coupling, the one end that shaft coupling 18 was kept away from to the double-screw bolt 15 runs through separation type bearing frame 8 and extends to opposite side and separation type slider 6 between threaded connection, separation type bearing frame 8's penetration section inner wall rigid coupling has sleeve 17, shaft coupling 18 passes through bearing 16 and is connected with the rotation between sleeve 17, the rigid coupling between separation type slider 6 and the adjacent separation type slider 6.
Specifically, the device further comprises a tunnel 23, wherein the annular sealing airbag 1 is placed inside the tunnel 23, and the annular sealing airbag 1 is in contact with the tunnel 23 through friction between the annular sealing airbag 1 and the wall of the tunnel.
The application method of the tunnel plugging device with the valve adjustment comprises the following steps:
s1, before the device is blocked, the device is plugged into a tunnel 23 by using an engineering crane;
S2, when the device is plugged, the annular sealing air bag 1 is inflated through the air bag inflation pipe 12 until the outer surface of the annular sealing air bag 1 is in close contact with the inner wall of the tunnel 23, the inflation of the air bag inflation pipe 12 is stopped, the motor 22 is started, the motor 22 drives the output shaft to rotate forward, the output shaft of the motor 22 drives the stud 15 to rotate forward, the separating slide block 6 connected with the stud 15 moves on the stud 15 in the direction close to the sealing end cover 2 in the forward rotation process of the stud 15, the connected separating slide block 6 drives the two separating slide blocks 6 connected with the stud to move in the same direction, the two separating slide blocks 6 drive the two air bag supporting rods 3 connected with the two separating slide blocks to move in the same direction, the other end of the two air bag supporting rods 3 is simultaneously driven to move upwards in the upward direction of the two rocking rods 11 connected with the rotating connection, and the two arc supporting plates 9 connected with the rotating connection are driven to move in the direction close to the sealing end cover 2 in the upward movement process of the rocking rods 11 until the two air bag 3 and the two arc supporting plates 9 are contacted with the annular sealing air bag 1, the motor 22 stops driving, the two arc supporting rods 3 and the two arc supporting rods 9 compress the annular sealing air bag 1 at this moment, and the annular sealing air bag 1 can be contacted with the annular sealing air bag wall 23, and the performance between the annular sealing air bag 1 and the annular sealing air bag 23 can be improved;
S3, in the process, when the rocker 11 rotationally connected with the air bag supporting rod 3 drives the arc-shaped supporting plate 9 to move, the two rockers 11 on the two second frames 10 synchronously move along with the arc-shaped supporting plate 9, so that the movement stability of the arc-shaped supporting plate 9 is improved, namely the sealing performance between the annular sealing air bag 1 and the tunnel 23 is further improved;
And S4, when an overcurrent condition is required in the plugging process of the device, the handle 35 drives the valve rod 34 to rotate so as to drive the ball core 32 to rotate, and the flow of the valve is regulated, so that overcurrent can be realized through the sealing end cover 2, the shaft sleeve 4 and a valve shell formed by fixedly connecting the valve cover 30 and the valve body 31.
Example 2
The difference between this embodiment and embodiment 1 is that:
Specifically, a leakage detection mechanism is assembled between the pipeline connector 27 and the tunnel 23, the leakage detection mechanism comprises a tunnel fixing flange 14 fixedly connected with the end part of the tunnel 23 through bolts and a vacuum tube 36 fixedly connected on the pipeline connector 27, the end wall, close to the tunnel 23, of the tunnel fixing flange 14 is fixedly connected with a tunnel sealing ring 13, a flexible sealing bag 29 is fixedly connected between the end wall, far away from the tunnel 23, of the tunnel fixing flange 14 and the pipeline connector 27, and an inflation port of the air bag inflation tube 12 penetrates through the pipeline connector 27 to extend to the outside so as to be convenient to inflate.
The application method of the tunnel plugging device with the valve adjustment further comprises the following steps:
S1, after the device is plugged into a tunnel 23, air tightness detection needs to be carried out on the annular sealing air bag 1, the tunnel fixing flange 14 is fixed at the end part of the tunnel 23 through bolts, the sealing performance between the tunnel fixing flange 14 and the tunnel 23 is improved by the tunnel sealing ring 13, a sealed cavity is formed between the annular sealing air bag 1 and the tunnel 23, air in the sealed cavity is emptied through the vacuum tube 36, whether the flexible sealing air bag 29 contracts or not is observed after pressure stabilization is carried out for 10min, vacuum degree change in the sealed cavity is checked, air is pumped into the sealed cavity, the air flow rate in the sealed cavity is tested by the air flow tester, whether the flexible sealing air bag 29 obviously bulges or not is observed, and if the flexible sealing air bag 29 does not contract or bulge, the detection is qualified, and the plugging operation can be carried out.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The tunnel plugging device with the valve adjustment is characterized by comprising an annular sealing air bag (1) with a plurality of bulges on the outer surface of an air bag inflation tube (12), wherein an auxiliary water plugging mechanism and a supporting mechanism are respectively assembled in the annular sealing air bag (1) from a water inlet end to a water outlet end, and a valve mechanism is assembled at one end, far away from the auxiliary water plugging mechanism, of the supporting mechanism;
The auxiliary water shutoff mechanism comprises a hollowed-out boss type sealing end cover (2) nested in the water inlet end of the annular sealing air bag (1);
The supporting mechanism comprises a shaft sleeve (4) which is placed in the annular sealing air bag (1) and fixedly connected with the water outlet end of the sealing end cover (2) through a connecting bolt (26), two arc-shaped supporting plates (9) are placed in the annular sealing air bag (1) and are positioned on the outer side of the shaft sleeve (4), and a supporting rod mechanism with extending and contracting functions is assembled between the two arc-shaped supporting plates (9) and the shaft sleeve (4);
The valve mechanism comprises a pipeline connector (27) positioned on the water outlet side of an annular sealing air bag (1), an electromagnetic block (28) is arranged between the pipeline connector (27) and one end, far away from a sealing end cover (2), of a shaft sleeve (4), a valve shell formed by a valve cover (30) and a valve body (31) through fixedly connecting one end, far away from the shaft sleeve (4), of the pipeline connector (27), a sealing ring (33) is fixedly connected to the top end of the valve shell, a valve rod (34) is arranged above the sealing ring (33), a handle (35) is fixedly connected to the top end of the valve rod (34), the bottom end of the valve rod (34) sequentially penetrates through the sealing ring (33), the valve cover (30) and the valve body (31) to extend into a ball core (32) which is matched with the inner wall of the valve body (31) to realize opening and closing, and the valve rod (34) is connected with the penetrating section of the valve cover (30) and the valve body (31) through a bearing.
2. The tunnel plugging device with valve adjustment according to claim 1, wherein a steel wire sealing ring (24) is connected between one side of the sealing end cover (2) close to the water inlet end of the annular sealing air bag (1) and the annular sealing air bag (1), and an annular spring tensioning ring (25) is connected between one side of the sealing end cover (2) close to the water outlet end of the annular sealing air bag (1) and the annular sealing air bag (1) in a sealing manner.
3. The tunnel plugging device with valve adjustment according to claim 2, wherein the supporting rod mechanism comprises two first racks (5) fixedly connected to the outer wall of the shaft sleeve (4) in sequence along the direction from the water inlet end to the water outlet end of the annular sealing air bag (1), three separating type sliding blocks (6) slidingly connected to the outer wall of the shaft sleeve (4), three separating type bearing seats (8) fixedly connected to the outer wall of the shaft sleeve (4) and two second racks (10) fixedly connected to the outer wall of the shaft sleeve (4), two rocking rods (11) are arranged on one sides of the first racks (5) and the second racks (10) in parallel positions, an air bag supporting rod (3) is arranged on the other side of the separating type sliding blocks (6) in parallel positions, a cross rod (7) with a sliding through groove is arranged on one side of the rocking rods (11) far away from the first racks (5) and the second racks (10), and the first racks (5) and the second racks (10) are respectively separated from the adjacent rocking rods (11) and the sliding through groove (7), and the rocking rods (11) are separated from the supporting rod (3) and the supporting rod (6) in arc shape, the rocker (11) near one side of the air bag supporting rod (3) is connected with a rotating shaft in a rotating mode between the air bag supporting rod (3) and a separating type bearing seat (8) and a cross rod (7) with a sliding through groove, one end of the rotating shaft between the separating type sliding block (6) and the air bag supporting rod (3) extends into the sliding through groove with the cross rod (7) with the sliding through groove, and a driving mechanism for driving the separating type sliding block (6) to move is assembled between the separating type sliding block (6) without the air bag supporting rod (3) and the corresponding separating type bearing seat (8).
4. The tunnel plugging device with valve adjustment according to claim 3, wherein the driving mechanism comprises a supporting plate (20) fixedly connected to the outer wall of the shaft sleeve (4) and located on one side of the separating type bearing seat (8) away from the separating type sliding block (6), a motor (22) is fixedly connected to the side wall of the supporting plate (20) away from the separating type bearing seat (8) through a connecting screw (21), a shaft coupler (18) is sleeved on the other side, which extends through the supporting plate (20), a stud (15) is arranged in the inner part of one side, far away from the output shaft of the motor (22), of the shaft coupler (18), a fastening screw (19) is fixedly connected between the output shaft of the motor (22) and the shaft coupler (18) and the stud (15), one end, far away from the shaft coupler (18), of the stud (15) extends through the separating type bearing seat (8) to the other side and is in threaded connection with the separating type sliding block (6), a sleeve (17) is fixedly connected to the inner wall of the penetrating section of the separating type bearing seat (8), and the shaft coupler (18) is in rotation type adjacent to the separating type sliding block (6) through the sleeve (16).
5. A valved tunnel closure device according to claim 4, further comprising a tunnel (23), wherein the annular sealing bladder (1) is disposed within the tunnel (23) and wherein contact with the tunnel (23) is achieved by friction between the annular sealing bladder (1) and the wall of the tunnel.
6. A tunnel plugging device with valve adjustment according to claim 5 is characterized in that a leakage detection mechanism is assembled between the pipeline connector (27) and the tunnel (23), the leakage detection mechanism comprises a tunnel fixing flange (14) fixedly connected with the end of the tunnel (23) through bolts and a vacuum tube (36) fixedly connected to the pipeline connector (27), the end wall, close to the tunnel (23), of the tunnel fixing flange (14) is fixedly connected with a tunnel sealing ring (13), a flexible sealing bag (29) is fixedly connected between the end wall, far away from the tunnel (23), of the tunnel fixing flange (14) and the pipeline connector (27), and an inflation port of the air bag inflation tube (12) penetrates through the pipeline connector (27) to extend to the outside so as to facilitate inflation.
7. The method of using a valved tunnel closure device of claim 6, comprising the steps of:
S1, before the device is blocked, the device is plugged into a tunnel (23) by using an engineering crane;
S2: when the device is plugged, the annular sealing air bag (1) is inflated through the air bag inflation pipe (12), the annular sealing air bag (1) is inflated until the outer surface of the annular sealing air bag (1) is tightly contacted with the inner wall of the tunnel (23), the inflation of the air bag inflation pipe (12) is stopped, the motor (22) is started, the motor (22) drives the output shaft to rotate forward, the output shaft of the motor (22) drives the stud (15) to rotate forward, in the forward rotation process of the stud (15), the connected split sliding block (6) moves on the stud (15) in the direction close to the sealing end cover (2), the connected split sliding block (6) drives the two split sliding blocks (6) connected with the split sliding block to move in the same direction, the two split sliding blocks (6) drive the two air bag supporting rods (3) connected in a rotating mode to move in the same direction, the other ends of the two air bag supporting rods (3) move upward in the moving process, the two rocking rods (11) are simultaneously driven to move upward, in the upward moving process of the two arc supporting plates (9) connected in a rotating mode, the two arc supporting plates (9) are driven to move in the direction close to the sealing end cover (2), the two arc supporting rods (9) are driven to contact with the two air bag supporting rods (1), at the moment, the annular sealing air bag (1) is tightly pressed by the air bag supporting rod (3) and the arc-shaped supporting plate (9), so that the contact positive pressure between the annular sealing air bag (1) and the hole wall of the tunnel (23) can be increased, and the sealing performance between the annular sealing air bag (1) and the tunnel (23) is improved;
S3, in the process, when the rocker (11) rotationally connected with the air bag supporting rod (3) drives the arc-shaped supporting plate (9) to move, the two rockers (11) on the two second frames (10) synchronously move along with the arc-shaped supporting plate (9), so that the movement stability of the arc-shaped supporting plate (9) is improved, namely the sealing performance between the annular sealing air bag (1) and the tunnel (23) is further improved;
And S4, when an overcurrent condition is required in the plugging process of the device, the handle (35) drives the valve rod (34) to rotate, the ball core (32) is driven to rotate, and the flow of the valve is regulated, so that overcurrent can be realized through the sealing end cover (2), the shaft sleeve (4) and a valve shell formed by fixedly connecting the valve cover (30) and the valve body (31).
8. The method of using a valve-regulated tunnel plugging device according to claim 7, wherein in the step S1, after the device is plugged into a tunnel (23), air tightness detection is required to be performed on the annular sealing air bag (1), the tunnel fixing flange (14) is fixed at the end part of the tunnel (23) through bolts, the sealing performance between the tunnel fixing flange (14) and the tunnel (23) is improved by the tunnel sealing ring (13), a closed cavity is formed between the annular sealing air bag (1) and the tunnel (23), air in the closed cavity is emptied through the vacuum tube (36), after the pressure is stabilized for 10min, whether the flexible sealing air bag (29) contracts and the vacuum degree in the closed cavity is checked, air is pumped into the closed cavity, the air flow in the closed cavity is tested by the air flow tester, whether the flexible sealing air bag (29) bulges obviously is observed, and if the flexible sealing air bag (29) does not contract and bulges, the detection is qualified, and the plugging operation can be performed.
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| CN119877492B (en) * | 2025-03-24 | 2026-01-30 | 中国电建集团昆明勘测设计研究院有限公司 | Water and electricity engineering bottom hole maintenance plugging structure and use method thereof |
| CN120250596B (en) * | 2025-06-05 | 2025-08-22 | 山西省水文水资源勘测总站 | A hydraulic tunnel inlet blocking device |
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| CN110906018A (en) * | 2019-11-25 | 2020-03-24 | 温州市海格阀门有限公司 | High leakproofness gate valve |
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| KR101378755B1 (en) * | 2012-06-12 | 2014-03-27 | (주)에스디시스템 | Air bag type tunnel entrance blocking apparatus |
| CN203855943U (en) * | 2014-05-26 | 2014-10-01 | 中国电建集团成都勘测设计研究院有限公司 | Hydraulic tunnel structure |
| GB201410255D0 (en) * | 2014-06-10 | 2014-07-23 | Secr Defence | An inflatable tunnel plug |
| KR101682110B1 (en) * | 2014-07-28 | 2016-12-02 | 전유석 | A blocking device for replacing a sluice gate of a vertical intake tower |
| CN208330463U (en) * | 2018-06-22 | 2019-01-04 | 中铁四局集团第二工程有限公司 | The temporarily isolating plugging device in tunnel |
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| CN209399028U (en) * | 2018-12-25 | 2019-09-17 | 中北大学 | A quick self-locking plugging device in a pipeline |
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