Bridge type concentric water distributor for oil exploitation

Abstract

The invention relates to the technical field of concentric water distributors, in particular to a bridge type concentric water distributor for oil exploitation, which comprises an external water distribution cylinder, an external water injection port is formed in the external water distribution cylinder, an internal water distribution cylinder is slidably arranged in the external water distribution cylinder, and a fixed support plate is fixedly connected in the internal water distribution cylinder. A fishing fixing column is fixedly connected to the upper end of the fixed supporting plate, an installation fixing component is matched with a blocking and plugging component, an electric telescopic rod is controlled to extend and move downwards, a first hinge push plate drives a hinge fixing seat to be away from a movable vertical rod, and the fishing fixing column is fixed to the movable vertical rod. Furthermore, a vertical sliding push plate is pushed to move through a fixed sliding rod, a reset connecting spring and a sliding sleeve rod, the vertical sliding push plate slides on a supporting sliding rod, a hinged connecting plate is driven to drive a fixed connecting plate to move, two blocking arc-shaped plates are far away from each other, and therefore the inner water distribution barrel can be fixedly installed, and meanwhile the inner water distribution barrel can be fixedly installed. And an external water injection port can be opened.

Description

Technical Field

[0001] The invention relates to the technical field of concentric water distributors, in particular to a bridge-type concentric water distributor for petroleum mining. Background Art

[0002] During oil field exploitation, as oil reservoir exploitation decreases, the oil layer pressure will also decrease. At this time, water injection wells will be set up in the oil layer to inject water into the oil layer. Water injection is used to increase the pressure of the oil layer and ensure the efficiency of exploitation. The bridge-type concentric water distributor is a stratified water injection tool designed specifically for oil exploitation. Its innovation lies in the use of a bridge-type flow channel and mechatronic concentric measurement and adjustment technology, which effectively solves the problem of difficult operation and low efficiency of traditional water distributors under complex reservoir conditions, and provides key technical support for improving oil field development efficiency and crude oil recovery rate.

[0003] For example, the authorization announcement number is CN117948110B, a concentric intelligent water distributor device, including a middle water distribution cylinder, an inner adjustment control sleeve, an outer water distribution cylinder and a water injection well cylinder, the middle water distribution cylinder has an inner adjustment control sleeve that slides axially inside, the middle water distribution cylinder slides and fits inside the outer water distribution cylinder, the outer water distribution cylinder slides and fits inside the water injection well cylinder, the motor main shaft of the middle control module is fixed to the middle screw, the middle screw and the upper slide cylinder are rotatably connected, the lower inner side of the upper slide cylinder is slidably connected to the lower slide cylinder, and the upper and lower parts of the middle water distribution cylinder are both annularly arrayed with external fixed balls. The central water distribution cylinder and the outer water distribution cylinder are directly separated, and the replacement operation of the central water distribution cylinder and other connecting structures eliminates the need to disassemble the pipe column, that is, the outer water distribution cylinder, so as to solve the problem that the pipe column and the water distributor need to be lifted together for maintenance and replacement of the water distributor, and the disassembly of the pipe column section by section increases the replacement time; although the above-mentioned prior art can realize the separation between the central water distribution cylinder and the outer water distribution cylinder, when the central water distribution cylinder is taken out, the lower water injection hole on the outer water distribution cylinder is always in an open state, and the fluid in the well can easily flow out from the lower water injection hole on the outer water distribution cylinder, which may affect the pressure balance in the well. At the same time, fluid leakage may cause oil or other harmful substances to leak into the environment, increasing the cost of cleaning and repair. Summary of the invention

[0004] The object of the present invention is to provide a bridge type concentric water distributor for oil mining to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge-type concentric water distributor for oil mining comprises an external water distribution barrel, an external water injection port is provided on the external water distribution barrel, an internal water distribution barrel is slidably arranged inside the external water distribution barrel, a fixed support plate is fixedly connected inside the internal water distribution barrel, a lifting and fixing column is fixedly connected to the upper end of the fixed support plate, a water volume regulating ring sleeve is slidably arranged inside the internal water distribution barrel, a mounting and fixing component for limiting and fixing the internal water distribution barrel inside the external water distribution barrel is provided at the lower end of the fixed support plate, a driving and adjusting component for driving the water volume regulating ring sleeve to move up and down is provided on the mounting and fixing component, a fixed cavity is provided inside the external water distribution barrel, a blocking and blocking component matched with the mounting and fixing component is provided inside the fixed cavity, the blocking and blocking component is used to block the external water injection port, an internal water injection port is provided on the internal water distribution barrel, the external water injection port is connected to the internal water injection port, and the water volume regulating ring sleeve is used to block the internal water injection port.

[0006] Preferably, the installation and fixing component includes an electric telescopic rod, a movable vertical rod, a first hinged push plate, a hinged fixed seat, a fixed sliding rod, a sliding sleeve rod, a sliding cavity, a reset connecting spring and a locking limit hole. The lower end of the fixed support plate is fixedly connected to the electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected to the movable vertical rod.

[0007] Preferably, two first hinged push plates are symmetrically hinged on the movable vertical rod, and one end of the first hinged push plate away from the movable vertical rod is hinged with a hinged fixed seat, one end of the hinged fixed seat is fixedly connected to a fixed sliding rod, a sliding sleeve rod is sleeved on the fixed sliding rod, and a sliding cavity is opened inside the sliding sleeve rod.

[0008] Preferably, the fixed slide rod is slidably connected in the sliding cavity, one end of the fixed slide rod is fixedly connected to a reset connection spring, the other end of the reset connection spring is fixedly connected to the sliding sleeve rod, the sliding sleeve rod slides through the internal water distribution cylinder, and the external water distribution cylinder is provided with a locking limit hole for the sliding sleeve rod to extend into, and the locking limit hole is connected to the fixed cavity.

[0009] Preferably, the blocking and blocking component includes a supporting slide rod, a vertical sliding push plate, a driving hinged connecting plate, a fixed connecting plate, a blocking arc plate, a fixed square support plate, a sliding plug rod and a reset spring. The supporting slide rod is fixedly connected inside the fixed cavity, and a vertical sliding push plate is slidably connected to the supporting slide rod.

[0010] Preferably, the end of the vertical sliding push plate close to the fixed cavity is hinged with a driving hinged connecting plate, the end of the driving hinged connecting plate away from the vertical sliding push plate is hinged with a fixed connecting plate, one end of the fixed connecting plate is fixedly connected to the sealing arc plate, and the fixed square support plate is fixedly connected inside the fixed cavity.

[0011] Preferably, one end of the fixed square support plate is fixedly connected to a sliding plug rod, and the end of the sliding plug rod away from the fixed square support plate is slidably plugged into the inside of the blocking arc plate, and a return spring is sleeved on the sliding plug rod, one end of the return spring is fixedly connected to the fixed square support plate, and the other end of the return spring is fixedly connected to the blocking arc plate.

[0012] Preferably, the driving and adjusting component includes a fixed mounting plate, a motor support seat, a driving motor, a driving threaded rod, a cross mounting frame, a fixed worm gear, a supporting connecting plate and a driving worm, the fixed mounting plate is fixedly connected to the movable vertical rod, and the motor support seat is fixedly connected to the fixed mounting plate.

[0013] Preferably, a driving motor is fixedly mounted on the motor support seat, a driving threaded rod is rotatably connected to the middle of the fixed mounting plate, a fixed worm gear is fixedly connected to the upper end of the driving threaded rod, a supporting connecting plate is fixedly connected to the fixed mounting plate, and a driving worm is rotatably connected to the supporting connecting plate.

[0014] Preferably, the driving worm is meshed with the fixed worm wheel, one end of the driving worm is fixedly connected to the output end of the driving motor, the driving threaded rod passes through the cross mounting frame, the driving threaded rod and the cross mounting frame are threadedly connected, and the cross mounting frame is fixedly mounted on the inner side of the water volume regulating ring sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By installing the cooperation between the fixed component and the blocking and blocking component and controlling the extension of the electric telescopic rod, the electric telescopic rod moves downward, and the hinged fixed seat is driven away from the moving vertical rod by the first hinged push plate, and then the vertical sliding push plate is pushed to move by the fixed slide bar, the reset connecting spring and the sliding sleeve rod. The vertical sliding push plate slides on the supporting slide bar, and the fixed connecting plate is driven to move by the hinged connecting plate, so that the two blocking arc plates are moved away from each other, and then the external water injection port can be opened while the internal water distribution cylinder is fixedly installed, which is convenient for the installation and fixation of the internal water distribution cylinder and the water injection operation.

[0017] By providing an installation fixing component and a blocking and sealing component, when the internal water distribution cylinder needs to be maintained or replaced, the electric telescopic rod is controlled to be extended and retracted, and the electric telescopic rod drives the movable vertical rod to move upward. The movable vertical rod drives the hinged fixing seat to move through the first hinged push plate, and the hinged fixing seat drives the sliding sleeve rod to move out of the fixed cavity through the fixed sliding rod. Under the elastic action of the reset spring, the two sealing arc plates can be brought close to and in contact with each other, thereby realizing the blocking of the external water injection port and avoiding fluid leakage.

[0018] A driving and adjusting component is provided, and a driving motor is used to drive a driving worm to rotate, and the driving worm is meshed with a fixed worm gear. The rotation of the driving worm drives the fixed worm gear to rotate, and the rotation of the fixed worm gear can drive the driving threaded rod to rotate. The driving threaded rod is threadedly connected to the cross mounting frame. The rotation of the driving threaded rod can drive the cross mounting frame and the water volume adjusting ring sleeve thereon to move up and down, and the water flow rate is controlled by covering the internal water injection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the fixed cavity position structure of the present invention.

[0022] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0023] Figure 5 It is a schematic diagram of the coordination structure between the mounting and fixing component and the blocking and blocking component of the present invention.

[0024] Figure 6 It is a schematic diagram of the installation structure of the water volume regulating ring sleeve of the present invention.

[0025] Figure 7 It is a schematic diagram of the internal water distribution cylinder structure of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure of the external water distribution cylinder of the present invention.

[0027] Fig. 9 It is a schematic diagram of the sliding sleeve rod structure of the present invention.

[0028] Fig.10 It is a schematic diagram of the internal structure of the sliding sleeve rod of the present invention.

[0029] Fig.11 It is a schematic diagram of the structure of the cross mounting frame of the present invention.

[0030] Fig.12 It is a schematic plan view of the internal structure of the present invention.

[0031] Fig.13 It is a schematic diagram of the position structure of the sliding sleeve rod of the present invention.

[0032] In the figure: 1, external water distribution cylinder; 2, external water injection port; 3, internal water distribution cylinder; 4, fixed support plate; 5, lifting fixed column; 6, installing fixed component; 7, blocking and blocking component; 8, fixed cavity; 9, driving and adjusting component; 10, internal water injection port; 11, water volume adjustment ring; 61, electric telescopic rod; 62, mobile vertical rod; 63, first hinged push plate; 64, hinged fixed seat; 65, fixed sliding rod; 66, sliding sleeve rod; 67, sliding cavity; 6 8. Reset connecting spring; 69. Locking limit hole; 71. Support slide bar; 72. Vertical sliding push plate; 73. Drive hinge connecting plate; 74. Fixed connecting plate; 75. Blocking arc plate; 76. Fixed square support plate; 77. Sliding plug rod; 78. Reset spring; 91. Fixed mounting plate; 92. Motor support seat; 93. Drive motor; 94. Drive threaded rod; 95. Cross mounting frame; 96. Fixed worm gear; 97. Support connecting plate; 98. Drive worm. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 13The present invention provides a technical solution: a bridge-type concentric water distributor for oil mining, comprising an external water distribution barrel 1, an external water injection port 2 is provided on the external water distribution barrel 1, an internal water distribution barrel 3 is slidably provided inside the external water distribution barrel 1, a fixed support plate 4 is fixedly connected inside the internal water distribution barrel 3, a scooping fixed column 5 is fixedly connected to the upper end of the fixed support plate 4, a water volume regulating ring sleeve 11 is slidably provided inside the internal water distribution barrel 3, a mounting and fixing component 6 for limiting and fixing the internal water distribution barrel 3 inside the external water distribution barrel 1 is provided at the lower end of the fixed support plate 4, a driving and adjusting component 9 for driving the water volume regulating ring sleeve 11 to move up and down is provided on the mounting and fixing component 6, and a fixed cavity 8 is provided inside the external water distribution barrel 1 , a blocking and blocking component 7 is arranged inside the fixed cavity 8 and cooperates with the installation and fixing component 6, and the blocking and blocking component 7 is used to block the external water injection port 2. An internal water injection port 10 is opened on the internal water distribution cylinder 3, and the external water injection port 2 is connected to the internal water injection port 10. The water volume regulating ring sleeve 11 is used to block the internal water injection port 10. Through the cooperation of the installation and fixing component 6 and the blocking and blocking component 7, the electric telescopic rod 61 is controlled to extend, and the electric telescopic rod 61 moves downward, and the hinged fixed seat 64 is driven away from the mobile vertical rod 62 through the first hinged push plate 63, and then the vertical sliding push plate 72 is pushed to move through the fixed slide bar 65, the reset connection spring 68 and the sliding sleeve rod 66, and the vertical sliding The push plate 72 slides on the supporting slide bar 71, and drives the fixed connecting plate 74 to move by driving the hinged connecting plate 73, so that the two blocking arc plates 75 move away from each other, so that the external water injection port 2 can be opened while the internal water distribution cylinder 3 is fixedly installed, which is convenient for the installation and fixation of the internal water distribution cylinder 3 and the water injection operation. By providing the installation and fixing component 6 and the blocking and blocking component 7, when the internal water distribution cylinder 3 needs to be maintained and replaced, the electric telescopic rod 61 is controlled to be extended and retracted, and the electric telescopic rod 61 drives the mobile vertical rod 62 to move upward, and the mobile vertical rod 62 drives the hinged fixing seat 64 to move through the first hinged push plate 63, and the hinged fixing seat 64 drives the sliding sleeve rod 66 from the fixed The fixed cavity 8 is moved out, and under the elastic action of the reset spring 78, the two blocking arc plates 75 can be brought close to and contact each other, so that the external water injection port 2 is blocked to avoid fluid leakage. A driving adjustment component 9 is provided, and the driving motor 93 is used to drive the driving worm 98 to rotate, and the driving worm 98 is meshed with the fixed worm gear 96. The rotation of the driving worm 98 drives the fixed worm gear 96 to rotate, and the rotation of the fixed worm gear 96 can drive the driving threaded rod 94 to rotate. The driving threaded rod 94 is threadedly connected to the cross mounting frame 95. The rotation of the driving threaded rod 94 can drive the cross mounting frame 95 and the water volume regulating ring sleeve 11 thereon to move up and down, and the water flow rate is controlled by blocking the internal water injection port 10.

[0035] The installation and fixing component 6 includes an electric telescopic rod 61, a mobile vertical rod 62, a first hinged push plate 63, a hinged fixed seat 64, a fixed slide rod 65, a sliding sleeve rod 66, a sliding cavity 67, a reset connection spring 68 and a locking limit hole 69. The lower end of the fixed support plate 4 is fixedly connected to the electric telescopic rod 61, and the output end of the electric telescopic rod 61 is fixedly connected to the mobile vertical rod 62. Two first hinged push plates 63 are symmetrically hinged on the mobile vertical rod 62. The end of the first hinged push plate 63 away from the mobile vertical rod 62 is hinged to the hinged fixed seat 64. A fixed slide rod 65 is fixedly connected to one end of the fixed seat 64, a sliding sleeve rod 66 is sleeved on the fixed slide rod 65, a sliding cavity 67 is opened inside the sliding sleeve rod 66, the fixed slide rod 65 is slidably connected in the sliding cavity 67, a reset connection spring 68 is fixedly connected to one end of the fixed slide rod 65, the other end of the reset connection spring 68 is fixedly connected to the sliding sleeve rod 66, the sliding sleeve rod 66 slides through the internal water distribution cylinder 3, and a locking limit hole 69 is opened on the external water distribution cylinder 1 for the sliding sleeve rod 66 to extend into, and the locking limit hole 69 is connected to the fixed cavity 8.

[0036] The blocking and blocking member 7 includes a supporting slide bar 71, a vertical sliding push plate 72, a driving hinged connecting plate 73, a fixed connecting plate 74, a blocking arc plate 75, a fixed square support plate 76, a sliding plug rod 77 and a reset spring 78. The supporting slide bar 71 is fixedly connected to the inside of the fixed cavity 8, and the vertical sliding push plate 72 is slidably connected to the supporting slide bar 71. The end of the vertical sliding push plate 72 close to the fixed cavity 8 is hinged to the driving hinged connecting plate 73, and the end of the driving hinged connecting plate 73 away from the vertical sliding push plate 72 is hinged to the There is a fixed connecting plate 74, one end of the fixed connecting plate 74 is fixedly connected to the blocking arc plate 75, the fixed square support plate 76 is fixedly connected to the inside of the fixed cavity 8, one end of the fixed square support plate 76 is fixedly connected to a sliding plug rod 77, the end of the sliding plug rod 77 away from the fixed square support plate 76 is slidably plugged into the blocking arc plate 75, and a return spring 78 is sleeved on the sliding plug rod 77, one end of the return spring 78 is fixedly connected to the fixed square support plate 76, and the other end of the return spring 78 is fixedly connected to the blocking arc plate 75.

[0037] The driving and adjusting member 9 comprises a fixed mounting plate 91, a motor support seat 92, a driving motor 93, a driving threaded rod 94, a cross mounting frame 95, a fixed worm gear 96, a supporting connecting plate 97 and a driving worm 98. The fixed mounting plate 91 is fixedly connected to the movable vertical rod 62. The motor support seat 92 is fixedly connected to the fixed mounting plate 91. The driving motor 93 is fixedly installed on the motor support seat 92. The middle part of the fixed mounting plate 91 is rotatably connected to the driving threaded rod 94. The upper end of the driving threaded rod 94 is fixedly connected to the fixed worm gear 96. The fixed mounting plate 91 is fixedly connected to the supporting connecting plate 97. The supporting connecting plate 97 is rotatably connected to the driving worm 98. The driving worm 98 is meshed with the fixed worm gear 96. One end of the driving worm 98 It is fixedly connected to the output end of the driving motor 93, and the driving threaded rod 94 passes through the cross mounting frame 95. The driving threaded rod 94 and the cross mounting frame 95 are threadedly connected. The cross mounting frame 95 is fixedly installed on the inner side of the water volume regulating ring sleeve 11. When the water volume needs to be adjusted, the driving motor 93 drives the driving worm 98 to rotate, and the driving worm 98 engages with the fixed worm gear 96. The rotation of the driving worm 98 drives the fixed worm gear 96 to rotate. The rotation of the fixed worm gear 96 can drive the driving threaded rod 94 to rotate. The driving threaded rod 94 is threadedly connected to the cross mounting frame 95. The rotation of the driving threaded rod 94 can drive the cross mounting frame 95 and the water volume regulating ring sleeve 11 thereon to move up and down, and the water flow rate is controlled by blocking the internal water injection port 10.

[0038] In actual use, the internal water distribution cylinder 3 is installed inside the external water distribution cylinder 1. When the internal water distribution cylinder 3 is installed, the electric telescopic rod 61 is in an extended state, the sliding sleeve rod 66 is against the vertical sliding push plate 72, the two blocking arc plates 75 are away from each other, and the reset spring 78 is in a compressed state. At this time, the external water injection port 2 is in an open state, and water injection into the oil layer can be achieved; when the internal water distribution cylinder 3 needs to be maintained and replaced, the electric telescopic rod 61 is controlled to retract, and the electric telescopic rod 61 drives the moving vertical rod 62 to move upward, and the moving vertical rod 62 drives the articulated fixing seat 64 to move through the first articulated push plate 63, and the articulated fixing seat 64 drives the sliding sleeve rod 66 to move out of the fixed cavity 8 through the fixed sliding rod 65. At this time, the semi-spherical end of the sliding sleeve rod 66 is in The locking limit hole 69 releases the restriction of the sliding sleeve 66 on the vertical sliding push plate 72. Under the elastic action of the return spring 78, the two blocking arc plates 75 can be brought close to and in contact with each other, thereby blocking the external water inlet 2 and preventing fluid leakage. The fixed column 5 can be lifted up, and under the squeezing action of the locking limit hole 69, the sliding sleeve 66 moves to one side of the hinged fixed seat 64 and squeezes the return connection spring 68, thereby removing the sliding sleeve 66 from the locking limit hole 69, thereby separating the internal water distribution cylinder 3 from the external water distribution cylinder 1, facilitating the replacement and maintenance of the internal water distribution cylinder 3 and its internal components, without the need to lift the external water distribution cylinder 1, thereby improving convenience. When the external water distribution cylinder 1 is installed, such as Figure 7 As shown, the semicircular end of the sliding sleeve rod 66 is exposed on the outside of the internal water distribution cylinder 3, which is convenient for installation and positioning. The sliding sleeve rod 66 is squeezed and compressed into the slide groove on the internal water distribution cylinder 3. When the semicircular end of the sliding sleeve rod 66 moves to the locking limit hole 69, under the elastic action of the reset connection spring 68, the semicircular end of the sliding sleeve rod 66 can be extended into the locking limit hole 69, thereby realizing the initial positioning of the internal water distribution cylinder 3, and then by controlling the extension of the electric telescopic rod 61, the electric telescopic rod 61 moves downward, and the hinged fixed seat 64 is driven to move away from the moving vertical rod 62 through the first hinged push plate 63, and then the vertical sliding push plate 72 is pushed to move through the fixed slide rod 65, the reset connection spring 68 and the sliding sleeve rod 66, and the vertical sliding push plate 72 slides on the supporting slide bar 71, and drives the fixed connecting plate 74 to move by driving the hinged connecting plate 73, thereby realizing that the two blocking arc plates 75 move away from each other, realizing the opening of the external water injection port 2, and facilitating the water injection operation; when the water volume needs to be adjusted, the driving motor 93 drives the driving worm 98 to rotate, and the driving worm 98 engages with the fixed worm gear 96. The rotation of the driving worm 98 drives the fixed worm gear 96 to rotate, and the rotation of the fixed worm gear 96 can drive the driving threaded rod 94 to rotate, and the driving threaded rod 94 is threadedly connected to the cross mounting frame 95. The rotation of the driving threaded rod 94 can drive the cross mounting frame 95 and the water volume adjustment ring sleeve 11 thereon to move up and down, and the water flow rate is controlled by blocking the internal water injection port 10.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge-type concentric water distributor for oil production, comprising an external water distributor (1), characterized in that: The external water distribution cylinder (1) is provided with an external water injection port (2), an internal water distribution cylinder (3) is slidably arranged inside the external water distribution cylinder (1), a fixed support plate (4) is fixedly connected inside the internal water distribution cylinder (3), a scooping fixed column (5) is fixedly connected to the upper end of the fixed support plate (4), a water volume regulating ring sleeve (11) is slidably arranged inside the internal water distribution cylinder (3), a mounting and fixing component (6) for limiting and fixing the internal water distribution cylinder (3) inside the external water distribution cylinder (1) is arranged at the lower end of the fixed support plate (4), and a mounting and fixing component (6) is arranged on the mounting and fixing component (6) A driving and adjusting component (9) is provided for driving a water volume regulating ring sleeve (11) to move up and down. A fixed cavity (8) is provided inside the external water distribution cylinder (1). A blocking and plugging component (7) is provided inside the fixed cavity (8) and is matched with the mounting and fixing component (6). The blocking and plugging component (7) is used to block the external water injection port (2). An internal water injection port (10) is provided on the internal water distribution cylinder (3). The external water injection port (2) is connected to the internal water injection port (10). The water volume regulating ring sleeve (11) is used to block the internal water injection port (10).

2. A bridge-type concentric water distributor for oil mining according to claim 1, characterized in that: The mounting and fixing component (6) comprises an electric telescopic rod (61), a movable vertical rod (62), a first hinged push plate (63), a hinged fixed seat (64), a fixed sliding rod (65), a sliding sleeve rod (66), a sliding cavity (67), a reset connection spring (68) and a locking limit hole (69); the lower end of the fixed support plate (4) is fixedly connected to the electric telescopic rod (61); and the output end of the electric telescopic rod (61) is fixedly connected to the movable vertical rod (62).

3. A bridge type concentric water distributor for oil mining according to claim 2, characterized in that: The movable vertical rod (62) is symmetrically hinged with two first hinged push plates (63), one end of the first hinged push plate (63) away from the movable vertical rod (62) is hinged with a hinged fixed seat (64), one end of the hinged fixed seat (64) is fixedly connected with a fixed sliding rod (65), a sliding sleeve rod (66) is sleeved on the fixed sliding rod (65), and a sliding cavity (67) is opened inside the sliding sleeve rod (66).

4. A bridge type concentric water distributor for oil mining according to claim 3, characterized in that: The fixed slide rod (65) is slidably connected in the sliding cavity (67); one end of the fixed slide rod (65) is fixedly connected with a reset connection spring (68); the other end of the reset connection spring (68) is fixedly connected to a sliding sleeve rod (66); the sliding sleeve rod (66) slides through the internal water distribution cylinder (3); a locking limit hole (69) for the sliding sleeve rod (66) to extend into is provided on the external water distribution cylinder (1); and the locking limit hole (69) is communicated with the fixed cavity (8).

5. A bridge type concentric water distributor for oil mining according to claim 4, characterized in that: The blocking and blocking component (7) comprises a supporting slide bar (71), a vertical sliding push plate (72), a driving hinged connecting plate (73), a fixed connecting plate (74), a blocking arc plate (75), a fixed square support plate (76), a sliding plug rod (77) and a reset spring (78); the supporting slide bar (71) is fixedly connected to the inside of the fixed cavity (8); and the supporting slide bar (71) is slidably connected to the vertical sliding push plate (72).

6. A bridge type concentric water distributor for oil mining according to claim 5, characterized in that: The end of the vertical sliding push plate (72) close to the fixed cavity (8) is hinged with a driving hinged connecting plate (73), and the end of the driving hinged connecting plate (73) away from the vertical sliding push plate (72) is hinged with a fixed connecting plate (74), one end of the fixed connecting plate (74) is fixedly connected to the blocking arc plate (75), and the fixed square support plate (76) is fixedly connected inside the fixed cavity (8).

7. A bridge type concentric water distributor for oil mining according to claim 6, characterized in that: One end of the fixed square support plate (76) is fixedly connected to a sliding plug rod (77), and one end of the sliding plug rod (77) away from the fixed square support plate (76) is slidably plugged into the inside of the blocking arc plate (75). A return spring (78) is sleeved on the sliding plug rod (77), and one end of the return spring (78) is fixedly connected to the fixed square support plate (76), and the other end of the return spring (78) is fixedly connected to the blocking arc plate (75).

8. The bridge-type concentric water distributor for oil mining according to claim 1, characterized in that: The driving and adjusting component (9) comprises a fixed mounting plate (91), a motor support seat (92), a driving motor (93), a driving threaded rod (94), a cross mounting frame (95), a fixed worm gear (96), a supporting connecting plate (97) and a driving worm (98); the fixed mounting plate (91) is fixedly connected to the moving vertical rod (62); and the motor support seat (92) is fixedly connected to the fixed mounting plate (91).

9. A bridge type concentric water distributor for oil mining according to claim 8, characterized in that: A driving motor (93) is fixedly mounted on the motor support seat (92); a driving threaded rod (94) is rotatably connected to the middle of the fixed mounting plate (91); a fixed worm gear (96) is fixedly connected to the upper end of the driving threaded rod (94); a supporting connecting plate (97) is fixedly connected to the fixed mounting plate (91); and a driving worm (98) is rotatably connected to the supporting connecting plate (97).

10. A bridge type concentric water distributor for oil mining according to claim 9, characterized in that: The driving worm (98) is meshed with the fixed worm wheel (96), one end of the driving worm (98) is fixedly connected to the output end of the driving motor (93), the driving threaded rod (94) passes through the cross mounting frame (95), the driving threaded rod (94) and the cross mounting frame (95) are threadedly connected, and the cross mounting frame (95) is fixedly mounted on the inner side of the water volume regulating ring sleeve (11).

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