Pipeline leak repairing component of water supply system in oil field fracturing operation
By designing a pipeline leak-proof component with a mobile adjustment and extension mechanism in the water supply system for oilfield fracturing operations, the problem of water supply system leakage has been solved, efficient repair and flexible adaptation have been achieved, and the stable operation of the water supply system and resource conservation have been ensured.
Patent Information
- Application Number
- CN202511199344.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2045-08-26
AI Technical Summary
During oilfield fracturing operations, the water supply system is prone to cracks, loose joints or aging pipes, which can lead to water leakage, waste water resources, affect water supply shortages, and increase operating costs.
A pipeline leak-proofing component for the water supply system in oilfield fracturing operations was designed. The component adopts a movable adjustment mechanism and a leak-proof and leak-proofing mechanism. The position of the leak-proof and leak-proofing mechanism is precisely adjusted by the cooperation of a screw rod and a nut block, and the leak-proofing area is expanded by an extension mechanism to adapt to leaking areas of different sizes.
It can timely repair the leaking location, avoid water waste, ensure the normal operation of the water supply system, reduce additional costs, and improve the adaptability and service life of equipment.
Smart Images

Figure CN120684612A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pipeline leakage prevention, in particular to a pipeline leakage repair component of a water supply system in oilfield fracturing operations. Background Art
[0002] In oilfield fracturing operations, continuous and stable water supply is required. Each fracturing working face has water supply and displacement requirements, and is usually equipped with an automated water diversion system. The water supply system can continuously supply water and achieve water supply and displacement by automatically adjusting the operating status of the pump.
[0003] However, during operation, existing water pipes are prone to cracks, loose joints or damage due to pressure, temperature changes or pipeline aging, resulting in water leakage. Especially in the case of high-pressure water transmission, leakage will not only waste a large amount of water resources, but also cause insufficient water supply during operation, affecting the normal progress of fracturing operations. Long-term leakage will increase the demand for water resources. In some cases, additional water sources may even be required, increasing operating costs and affecting production efficiency. The leakage problem causes water to accumulate around the pipeline or at the bottom of the equipment for a long time, which can easily cause corrosion of the equipment and pipelines. For this reason, the present invention proposes a pipeline leak-proof component for the water supply system in oilfield fracturing operations. Summary of the Invention
[0004] In order to overcome the shortcomings of the existing technology, the present invention provides a pipeline leak-proof component of the water supply system in oilfield fracturing operations. Oilfield fracturing operations have a large demand for water, and traditional water supply systems are prone to problems such as cracks, loose joints or aging of pipelines, resulting in water leakage. This not only wastes a large amount of water resources, but may also lead to insufficient water supply and affect normal operations. The leak-proof component uses a precise leak-proofing and leak-proofing mechanism to promptly repair the leak location and effectively prevent the waste of water resources when it is discovered, thereby ensuring the normal operation of the water supply system and avoiding the additional cost of water source scheduling.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a pipeline leak-proof component of a water supply system in an oilfield fracturing operation includes a water supply system base, an automatic regulating pump is installed on the water supply system base, and several groups of water supply pipes are connected to the automatic regulating pump. A flow meter is provided on the outer wall of each group of water supply pipes, and a movable regulating mechanism is detachably installed on the side wall of the water supply pipe.
[0006] The movable adjustment mechanism is connected to a leak-proof and leak-repairing mechanism, and the two side walls of the leak-proof and leak-repairing mechanism are plugged with extension mechanisms. The leak-proof and leak-repairing mechanism slides on the movable adjustment mechanism to adjust its position, and the extension mechanism is used to increase the coverage area of the leak-proof and leak-repairing mechanism.
[0007] The movable adjustment mechanism includes a mounting plate installed on the side wall of the water supply pipe, a side sliding groove opened in the mounting plate, a slider slidably connected to the side sliding groove, an upper sliding groove opened above the mounting plate and connected to the side sliding groove, a screw rod installed on the slider, and a nut block threadedly connected to the outer wall of the screw rod.
[0008] As a preferred technical solution of the present invention, the top end of the screw rod passes through the upper slide groove and extends to the outside, and the inner end of the slider is connected to the leak-proof and leak-sealing mechanism.
[0009] As a preferred technical solution of the present invention, the outer wall of the nutmeg block is provided with anti-slip grooves, the outer ring diameter of the nutmeg block is set to be larger than the width of the upper slide groove, and the bottom end of the nutmeg block is provided with a rubber pad.
[0010] As a preferred technical solution of the present invention, the leakage-proofing and leak-sealing mechanism includes a first leakage-proof clamping plate installed on the outer wall of the slider, a hinge arranged on the first leakage-proof clamping plate, a second leakage-proof clamping plate hinged to the first leakage-proof clamping plate through the hinge, a first mounting seat installed on the outer wall of the top end of the first leakage-proof clamping plate, a fastening bolt rod hinged in the first mounting seat, a second mounting seat installed on the outer wall of the top end of the second leakage-proof clamping plate, and a nut threadedly connected to the outer wall of the fastening bolt rod.
[0011] As a preferred technical solution of the present invention, the inner walls of the first leak-proof clamping plate and the second leak-proof clamping plate are provided with rubber leak-proof gaskets, and the rubber leak-proof gaskets are O-shaped after the first leak-proof clamping plate and the second leak-proof clamping plate are fitted and fixed.
[0012] As a preferred technical solution of the present invention, both side walls of the first leak-proof clamping plate and the second leak-proof clamping plate are connected with an extension mechanism, which increases the coverage area of the first leak-proof clamping plate and the second leak-proof clamping plate.
[0013] As a preferred technical solution of the present invention, the extension mechanism includes an insertion slot provided in the first leak-proof clamping plate and the second leak-proof clamping plate, a insertion rod inserted in the insertion slot, an extended leak-proof plate connected to the insertion rod, an active cavity provided in the insertion rod, a reset spring connected to the inner wall of the active cavity, a clamping block connected to the reset spring and slidably connected to the active cavity, a clamping slot provided on the inner wall of the insertion slot, and a pressing plate slidably connected to the clamping slot.
[0014] As a preferred technical solution of the present invention, there are four groups of the plug-in slots provided in the upper and lower parts, and four groups of the plug-in rods provided correspondingly, and movable cavities are provided in the upper two groups of the plug-in rods.
[0015] As a preferred technical solution of the present invention, one end of the return spring is connected to the inner wall of the movable cavity, and the other end of the return spring is connected to the bottom end of the clamping block.
[0016] Compared with the existing technology, the beneficial effects that the present invention can achieve are: 1. Oilfield fracturing operations have a large demand for water, and traditional water supply systems are prone to cracks, loose joints or aging pipes, resulting in water leakage, which not only wastes a lot of water resources, but may also lead to insufficient water supply and affect normal operations. The leak-proof component can use a precise leak-proofing and leak-filling mechanism to repair the leak in time and effectively prevent the waste of water resources when the leak is found, thereby ensuring the normal operation of the water supply system and avoiding the additional cost of water source scheduling.
[0017] 2. The leak-proofing component features a movable adjustment mechanism. Through the cooperation of a screw rod and a nut block, the position of the leak-proofing and leak-proofing mechanism can be precisely adjusted. Workers can move the leak-proofing and leak-proofing mechanism to the leaking location for effective repair according to actual needs. The extended mechanism can also expand the repair area to meet the needs of leaks of different sizes. This flexible design makes leak-proofing operations more efficient and avoids the high costs of replacing the entire pipeline or conducting large-scale repairs.
[0018] 3. The design of the extension mechanism and leak prevention and repair mechanism not only improves the adaptability of the equipment to the leaking area, but also ensures stable operation under high pressure and complex working conditions. The adjustability and flexibility of the leak prevention and repair mechanism enable it to adapt to various pipeline conditions, especially aging, wear and tear, thereby extending the overall service life of the water supply system. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.
[0020] Figure 2 It is a schematic diagram of the three-dimensional state of the first viewing angle structure of the movable adjustment mechanism of the present invention.
[0021] Figure 3 It is a schematic diagram of the second viewing angle structure of the movable adjustment mechanism of the present invention in a three-dimensional state.
[0022] Figure 4 It is a three-dimensional schematic diagram of the connection structure of the movable adjustment mechanism and the leakage preventing and repairing mechanism of the present invention.
[0023] Figure 5 It is a schematic diagram of the active state of the connection structure of the movable adjustment mechanism and the leakage preventing and repairing mechanism of the present invention.
[0024] Figure 6 It is a three-dimensional schematic diagram of the connection and disassembly of the leakage preventing and repairing mechanism and the extension mechanism of the present invention.
[0025] Figure 7 For the present invention Figure 6 Schematic diagram of the structure's front view and cross-section.
[0026] Figure 8For the present invention Figure 7 Schematic diagram of the enlarged state of the structure at point A in the middle.
[0027] Among them: 1. Water supply system base; 2. Automatic regulating pump; 3. Water supply pipe; 4. Flow meter; 5. Movable adjustment mechanism; 51. Mounting plate; 52. Side slide groove; 53. Slider; 54. Upper slide groove; 55. Screw rod; 56. Nut block; 6. Leakage prevention and repair mechanism; 61. First leak-proof clamping plate; 62. Second leak-proof clamping plate; 63. Hinge; 64. First mounting seat; 65. Fastening bolt rod; 66. Second mounting seat; 67. Nut; 7. Extension mechanism; 71. Plug-in slot; 72. Extended leak-proof plate; 73. Plug-in rod; 74. Movable chamber; 75. Reset spring; 76. Block; 77. Slot; 78. Press plate. DETAILED DESCRIPTION
[0028] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific examples, but the following examples are only preferred embodiments of the present invention, not all. Based on the examples in the implementation manner, other embodiments obtained by those skilled in the art without making creative work are all within the scope of protection of the present invention. The experimental methods in the following examples, unless otherwise specified, are all conventional methods, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial channels.
[0029] Example: Figure 1 - Figure 8 As shown, this embodiment proposes a pipeline leak-proof component for the water supply system in oilfield fracturing operations, including a water supply system base 1, on which an automatic regulating pump 2 is installed, and the automatic regulating pump 2 is connected to a plurality of water supply pipes 3, each group of water supply pipes 3 is provided with a flow meter 4 on the outer wall, and a movable regulating mechanism 5 is detachably installed on the side wall of the water supply pipe 3.
[0030] The movable adjustment mechanism 5 is connected to a leak-proof and leak-repairing mechanism 6, and the two side walls of the leak-proof and leak-repairing mechanism 6 are plugged with extension mechanisms 7. The leak-proof and leak-repairing mechanism 6 slides on the movable adjustment mechanism 5 to adjust its position, and the extension mechanism 7 is used to increase the coverage area of the leak-proof and leak-repairing mechanism 6.
[0031] The movable adjustment mechanism 5 includes a mounting plate 51 installed on the side wall of the water supply pipe 3, a side slide groove 52 opened in the mounting plate 51, a slider 53 slidably connected to the side slide groove 52, an upper slide groove 54 opened above the mounting plate 51 and connected to the side slide groove 52, a screw rod 55 installed on the slider 53, and a nut block 56 threadedly connected to the outer wall of the screw rod 55.
[0032] The staff can, according to the leakage of the water supply pipe 3 or the place where the leakage needs to be repaired, first rotate the nut block 56 upwards before moving the leak-proof repair mechanism 6, so that the nut block 56 and the screw rod 55 cooperate to rotate upwards until the bottom end of the nut block 56 is separated from the outer wall of the mounting plate 51. At this time, the leak-proof repair mechanism 6 can be moved, so that the leak-proof repair mechanism 6 slides in the side slide groove 52 through the slider 53, and the slider 53 drives the screw rod 55 to slide synchronously in the upper slide groove 54. The leak-proof repair mechanism 6 is moved to the required position and the nut block 56 can be tightened downwards, so that the nut block 56 and the screw rod 55 cooperate to move downwards. Finally, the bottom end of the nut block 56 contacts the outer wall of the mounting plate 51 for fixation, fixes the position of the leak-proof repair mechanism 6, and the leak-proof repair mechanism 6 performs leak-proof repair on the water supply pipe 3. It should be noted here that the leak-proof repair mechanism 6 connected with the slider 53 can be set in several groups according to actual conditions, and can slide in the side slide groove 52 to perform leak-proof repair at each position.
[0033] Specifically, the top of the screw rod 55 extends through the upper chute 54 to the outside, and the inner end of the slider 53 is connected to the leak-proof and leak-proof repair mechanism 6. This arrangement ensures that when the slider 53 slides in the side chute 52, it can drive the leak-proof and leak-proof repair mechanism 6 to move synchronously. In this way, the staff can adjust the position of the leak-proof and leak-proof repair mechanism 6 by moving the slider 53, so that it can be accurately moved to the position where the water supply pipe 3 needs to be leak-proof and leak-proof. The outer wall of the nut block 56 is provided with anti-slip grooves, which serve to increase the friction between the staff's hand and the nut block 56. The outer ring diameter of the nut block 56 is set to be larger than the width of the upper chute 54. The bottom end of the nut block 56 is provided with a rubber pad. This arrangement prevents the nut block 56 from falling into the upper chute 54. When the nut block 56 moves downward and contacts the outer wall of the mounting plate 51, it can be firmly fixed on the mounting plate 51, providing reliable fixed support for the leak-proof and leak-proof repair mechanism 6.
[0034] The leakage prevention and repair mechanism 6 includes a first leakage prevention clamping plate 61 installed on the outer wall of the slider 53, a hinge 63 arranged on the first leakage prevention clamping plate 61, a second leakage prevention clamping plate 62 hinged to the first leakage prevention clamping plate 61 through the hinge 63, a first mounting seat 64 installed on the outer wall of the top end of the first leakage prevention clamping plate 61, a fastening bolt rod 65 hinged in the first mounting seat 64, a second mounting seat 66 installed on the outer wall of the top end of the second leakage prevention clamping plate 62, and a nut 67 threadedly connected to the outer wall of the fastening bolt rod 65.
[0035] The staff uses the leak-proof and leak-proof mechanism 6 to prevent leaks at the water supply pipe 3. The specific operation is as follows: the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 are initially in the state as shown in FIG. Figure 5As shown, the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 are in the open state. After the adjustment mechanism 5 is moved to the appropriate position, the second leak-proof clamping plate 62 is rotated so that the second leak-proof clamping plate 62 is in contact with the first leak-proof clamping plate 61. At this time, the fastening bolt rod 65 is rotated so that the fastening bolt rod 65 rotates in the first mounting seat 64, and the nut 67 drives the fastening bolt rod 65 to engage with the second mounting seat 66. At this time, the nut 67 is rotated inward so that the nut 67 rotates inward on the fastening bolt rod 65. Finally, the inner end of the nut 67 contacts the outer wall of the second mounting seat 66 to form a fixation, and finally the positions of the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 are tightened and fixed, so that the inner walls of the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 are tightly in contact with the outer wall of the water supply pipe 3 to form a seal to prevent leakage. Similarly, the nut 67 is turned outward to release the fixation of the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 to restore the open state.
[0036] Specifically, the inner walls of the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 are provided with rubber leak-proof gaskets, which have good flexibility and sealing performance. After the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 are fitted and fixed, the rubber leak-proof gasket is O-shaped. The O-shaped rubber leak-proof gasket can wrap the water supply pipe 3 in all directions to form a closed sealed space; the two side walls of the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 are plugged with an extension mechanism 7, and the extension mechanism 7 increases the coverage area of the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62. In the actual oilfield fracturing operation water supply system, the leakage position and range of the water supply pipe 3 are different. When the area where leakage prevention and repair are required is large, relying solely on the coverage area of the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62 itself may not be able to meet the needs. By providing the extension mechanism 7, the staff can flexibly increase the coverage area of the leak prevention and repair according to actual conditions, thereby better adapting to leaking areas of different sizes and improving the versatility and applicability of the leak repair component.
[0037] The extension mechanism 7 includes an insertion slot 71 provided in the first leak-proof clamping plate 61 and the second leak-proof clamping plate 62, a plug-in rod 73 inserted in the insertion slot 71, an extended leak-proof plate 72 connected to the plug-in rod 73, an active cavity 74 provided in the plug-in rod 73, a return spring 75 connected to the inner wall of the active cavity 74, a clamping block 76 connected to the return spring 75 and slidably connected in the active cavity 74, a clamping slot 77 provided on the inner wall of the insertion slot 71, and a pressing plate 78 slidably connected in the clamping slot 77.
[0038] When the locking nut 75 is unlocked, the locking nut 77 is unlocked, and the lock nut 77 is unlocked, so the master lock nut 77 is unlocked, and the master lock nut 77 is unlocked. The restoring force generated pushes the block 76 to restore, and the block 76 is bounced up and engaged with the card slot 77 to form a fixation. By plugging in the extended leak-proof plates 72 on both sides, the coverage area is increased, so as to match the larger leak-proof and leak-repairing water supply pipe 3. Similarly, when it is necessary to remove the extended leak-proof plate 72, it is only necessary to press the pressing plate 78 downward so that the pressing plate 78 squeezes the block 76 to move downward, and the block 76 squeezes the reset spring 75 to produce deformation. After the block 76 is squeezed into the active cavity 74, the extended leak-proof plate 72 is pulled outward to pull out the plug rod 73 to complete the disassembly.
[0039] It is worth noting that there are four groups of plug-in slots 71 and four groups of plug-in rods 73 respectively. Active cavities 74 are opened in the two upper groups of plug-in rods 73. Through multiple groups of plug-in cooperation, the force can be dispersed to prevent the extended leak-proof plate 72 from loosening or falling off during use, thereby ensuring the reliability and stability of the extension mechanism 7; one end of the return spring 75 is connected to the inner wall of the active cavity 74, and the other end of the return spring 75 is connected to the bottom end of the block 76. The active cavity 74, the return spring 75 and the block 76 together constitute a core engaging mechanism. When the plug-in rod 73 of the extended leak-proof plate 72 is inserted into the plug-in slot 7 When the locking cam 75 is in the state of being clamped, the locking cam 76 is released, and the locking cam 77 is in the state of being clamped.
[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0041] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned implementation rules. The above-mentioned implementation rules and description are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A pipe leak repair component for a water supply system in an oilfield fracturing operation, comprising a water supply system base (1), characterized in that: An automatic regulating pump (2) is installed on the water supply system base (1), and a plurality of water supply pipes (3) are connected to the automatic regulating pump (2). A flow meter (4) is provided on the outer wall of each water supply pipe (3). A movable regulating mechanism (5) is detachably installed on the side wall of the water supply pipe (3); a leak-proof and leak-repairing mechanism (6) is connected to the movable regulating mechanism (5), and an extension mechanism (7) is inserted into the two side walls of the leak-proof and leak-repairing mechanism (6). The leak-proof and leak-repairing mechanism (6) is slidably regulated on the movable regulating mechanism (5). The extension mechanism (7) is used to increase the coverage area of the leak-proof and leak-proof mechanism (6); the movable adjustment mechanism (5) includes a mounting plate (51) mounted on the side wall of the water supply pipe (3), a side slide groove (52) provided in the mounting plate (51), a slider (53) slidably connected to the side slide groove (52), an upper slide groove (54) provided above the mounting plate (51) and connected to the side slide groove (52), a screw rod (55) mounted on the slider (53), and a nut (56) threadedly connected to the outer wall of the screw rod (55).
2. The pipeline leak-proof component of the water supply system in oilfield fracturing operation according to claim 1, characterized in that: The top end of the screw rod (55) passes through the upper slide groove (54) and extends to the outside, and the inner end of the slider (53) is connected to the leak prevention and repair mechanism (6).
3. The pipeline leak-proof component of the water supply system in oilfield fracturing operation according to claim 1, characterized in that: The outer wall of the nut block (56) is provided with anti-slip lines, the outer ring diameter of the nut block (56) is set to be larger than the width of the upper slide groove (54), and the bottom end of the nut block (56) is provided with a rubber pad.
4. The pipeline leak-proof component for the water supply system in oilfield fracturing operations according to claim 2, characterized in that: The leak-proof and leak-sealing mechanism (6) comprises a first leak-proof clamping plate (61) mounted on the outer wall of the slider (53), a hinge (63) provided on the first leak-proof clamping plate (61), a second leak-proof clamping plate (62) hinged to the first leak-proof clamping plate (61) via the hinge (63), a first mounting seat (64) mounted on the outer wall of the top end of the first leak-proof clamping plate (61), a fastening bolt rod (65) hinged in the first mounting seat (64), a second mounting seat (66) mounted on the outer wall of the top end of the second leak-proof clamping plate (62), and a nut (67) threadedly connected to the outer wall of the fastening bolt rod (65).
5. The pipeline leak-proof component of the water supply system in oilfield fracturing operation according to claim 4, characterized in that: The inner walls of the first leak-proof clamping plate (61) and the second leak-proof clamping plate (62) are provided with rubber leak-proof gaskets, and the rubber leak-proof gaskets are O-shaped after the first leak-proof clamping plate (61) and the second leak-proof clamping plate (62) are fitted and fixed.
6. The pipeline leak-proof component of the water supply system in oilfield fracturing operation according to claim 4, characterized in that: The two side walls of the first leak-proof clamping plate (61) and the second leak-proof clamping plate (62) are plugged with an extension mechanism (7), and the extension mechanism (7) increases the coverage area of the first leak-proof clamping plate (61) and the second leak-proof clamping plate (62).
7. The pipeline leak-proof component of the water supply system in oilfield fracturing operation according to claim 6, characterized in that: The lengthening mechanism (7) comprises a plug-in slot (71) provided in the first leak-proof clamping plate (61) and the second leak-proof clamping plate (62), a plug-in rod (73) plugged into the plug-in slot (71), a lengthened leak-proof plate (72) connected to the plug-in rod (73), an active cavity (74) provided in the plug-in rod (73), a return spring (75) connected to the inner wall of the active cavity (74), a clamping block (76) connected to the return spring (75) and slidably connected in the active cavity (74), a clamping slot (77) provided in the inner wall of the plug-in slot (71), and a pressing plate (78) slidably connected in the clamping slot (77).
8. The pipeline leak-proof component for the water supply system in oilfield fracturing operations according to claim 7, characterized in that: There are four groups of the plug slots (71) arranged in the upper and lower parts, and four groups of the plug rods (73) are correspondingly arranged. Active cavities (74) are provided in the upper two groups of the plug rods (73).
9. The pipeline leak-proof component for the water supply system in oilfield fracturing operations according to claim 8, characterized in that: One end of the return spring (75) is connected to the inner wall of the movable cavity (74), and the other end of the return spring (75) is connected to the bottom end of the clamping block (76).
Citation Information
Patent Citations
Leakage-proof device for long-distance heat distribution pipeline
CN118442479A
Water supply pipeline temporary leakage repairing device
CN210372531U
Device for leaking stoppage of fire-fighting pipeline
CN212776250U
Water injection distribution device for oil field water injection well
CN216429578U
Composite concrete pipe
CN217003449U