阅读说明：本技术 一种油田输管防腐设备 (Oil field pipe conveying anticorrosion equipment ) 是由 夏岿阳 夏秋月 张广帅 夏旭光 翟义恒 夏周阳 李孟 夏志全 袁建国 郑永胜 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种油田输管防腐设备,属于油田运输设备技术领域,通过在油田管道外端设置的防护套管,不仅可对外界土壤和腐蚀性的杂质起到隔绝作用,还能够避免在油田管道受到腐蚀穿孔后,因管内介质漏失所带来的诸多不良影响,当防护套管受到腐蚀穿孔时,油田管道与防护套管之间的气体得到排放,使移动塞没有气压的支撑下因重力下降,利用设置的多个不同直径的存气筒,使得挤压塞受到挤压后为气导细管输送的气体也不尽相同,并通过输送气体的多少来决定引导塞的上升高度,以此方便工作人员快速的判断出防护套管腐蚀穿孔的具体方位,同时在引导塞上升时触发提醒功能,来引起人们的注意,进而能够快速、及时的进行补修。(The invention discloses an oil field pipe conveying anticorrosion device, which belongs to the technical field of oil field conveying equipment, and not only can play a role of isolating external soil and corrosive impurities through a protective sleeve arranged at the outer end of an oil field pipeline, but also can avoid a plurality of adverse effects caused by medium leakage in the oil field pipeline after the oil field pipeline is subjected to corrosion perforation, when the protective sleeve is subjected to corrosion perforation, gas between the oil field pipeline and the protective sleeve is discharged, so that a movable plug is descended due to gravity without being supported by air pressure, the gas conveyed for a gas guide thin pipe after being extruded is different by utilizing a plurality of air storage cylinders with different diameters, and the rising height of a guide plug is determined according to the quantity of the conveyed gas, so that a worker can conveniently and quickly judge the specific position of the corrosion perforation of the protective sleeve, and simultaneously trigger a reminding function when the guide plug rises, to draw attention of people and then can repair quickly and timely.)

1. The utility model provides an oil field defeated pipe anticorrosion equipment, includes oil field pipeline (1), its characterized in that: the oil field pipeline (1) is sleeved with a protective sleeve (2), a plurality of uniformly distributed sealing ring plates (3) are fixedly connected between the oil field pipeline (1) and the protective sleeve (2), a plurality of gas guide tubes (4) are inserted into the sealing ring plates (3), the protective sleeve (2) is positioned between every two gas guide tubes (4), a fixed inserting cylinder (5) is fixedly connected, the upper end of the fixed inserting cylinder (5) is fixedly connected with a ventilating cylinder (51), a moving plug (52) is slidably connected into the fixed inserting cylinder (5), the lower side wall of the moving plug (52) is fixedly connected with a balancing weight (53), the lower end of the balancing weight (53) is fixedly connected with an extruding rod (54), the gas guide tubes (4) are positioned at the lower side of the fixed inserting cylinder (5) and are fixedly connected with a gas storage cylinder (6), and the gas storage cylinder (6) is communicated with the gas guide tubes (4), deposit the inside sliding connection of inflator (6) and have extrusion stopper (64), protect protective casing (2) upper end fixedly connected with to remind and insert a section of thick bamboo (7), fixedly connected with connecting pipe (71) between the bottom of a fixed section of thick bamboo (5) of inserting and gas guide tubule (4), connecting pipe (71) inside sliding connection has guide stopper (72).

2. The oilfield pipe conveying corrosion prevention device of claim 1, wherein: the outer end of the reminding inserting cylinder (7) is sleeved with a magnetic ring block (73), the magnetic ring block (74) is arranged inside the guiding plug (72) and the magnetic ring block (73), the reminding inserting cylinder (7) is located above the magnetic ring block (73) and fixedly connected with a limiting block (75), the reminding inserting cylinder (7) is fixedly connected with two supporting plates (81), two supporting plates (81) are rotatably connected with a rotating round rod (82), two ends of the rotating round rod (82) are fixedly connected with fixed square rods (83), two positioning plates (84) are fixedly connected with the side wall of the magnetic ring block (73), two positioning plates (84) are opened on one side wall opposite to each other and are chiseled with limiting grooves matched with the fixed square rods (83), the fixed square rods (83) are located inside the limiting grooves, the rotating round rod (82) is located between the two supporting plates (81) and fixedly connected with short connecting cylinders (85), the lower side wall of the connecting short cylinder (85) is fixedly connected with a reminding bell (87).

3. The oilfield pipe conveying corrosion prevention device of claim 1, wherein: ventilative section of thick bamboo (51) left and right sides inner wall all rotates and is connected with fixed rotary drum (511), two fixedly connected with supports crisp stick (512) between fixed rotary drum (511), support crisp stick (512) center department round trip has connecting rope (513), connecting rope (513) other end and removal stopper (52) fixed connection, one of them fixedly connected with connection pad (514) on fixed rotary drum (511), threaded connection has bolt (515) on ventilative section of thick bamboo (51), and bolt (515) contact with connection pad (514).

4. The oilfield pipe conveying corrosion prevention device of claim 1, wherein: the diameters of the extrusion rods (54) are different, and the inner diameters of the gas storage cylinders (6) are respectively matched with the diameters of the extrusion rods (54) above the gas storage cylinders.

5. The oilfield pipe conveying corrosion prevention device of claim 1, wherein: the inner part of the air storage cylinder (6) is fixedly connected with a sealing ring (61), a spring rod (62) is fixedly connected to the upper part of the sealing ring (61), a sealing ball (63) is arranged below the sealing ring (61), and an extension spring (65) is fixedly connected between the sealing ball (63) and the spring rod (62).

6. The oilfield pipe conveying corrosion prevention device of claim 2, wherein: the upper side wall of the connecting short cylinder (85) is fixedly connected with a wind sail (86).

7. The oilfield pipe conveying corrosion prevention device of claim 1, wherein: the side wall of the reminding inserting cylinder (7) is carved with scale lines, and the reminding inserting cylinder (7) is made of transparent materials.

8. The oilfield pipe conveying corrosion prevention device of claim 1, wherein: the upper end of the reminding inserting cylinder (7) is fixedly connected with a breathable net (88).

9. The oilfield pipe conveying corrosion prevention device of claim 3, wherein: the maximum bearing weight of the support brittle rods (512) is less than that of the balancing weight (53).

10. The oilfield pipe conveying corrosion prevention device of claim 1, wherein: a plurality of through holes are drilled on the air-permeable cylinder (51), and the outer end of the air-permeable cylinder (51) is coated with a layer of air-permeable water-blocking material.

Technical Field

The invention relates to the technical field of oilfield transportation equipment, in particular to anticorrosion equipment for an oilfield transmission pipe.

Background

The sum of the reservoirs within the same hydrocarbon producing area under the control of a single geologic structure (or formation) factor. A field may have one or more reservoirs. The oil field is mainly the oil reservoir in the same area, and the gas field is mainly the gas reservoir. According to the geological factors in the area for controlling oil and gas production, oil and gas fields are divided into 3 types: constructing oil and gas fields. Meaning that the hydrocarbon production area is controlled by a single construction factor, such as wrinkles and faults. Secondly, the oil-bearing area of the stratum type oil and gas field is controlled by stratum factors (such as unconformity, pinch-out and lithology change of the stratum) on the background of a regional anticline or monoclinic structure. Compound oil and gas field. The oil and gas producing area is not controlled by single structure or stratum factors, but controlled by multiple geological factors.

In the process of oil and gas transportation, thick oil outward transportation pipelines are generally adopted for transporting oil and gas, in order to not obstruct traffic and buildings on the ground, the pipelines are generally installed underground, and a part of the pipelines is exposed in remote areas with reduced traffic and buildings, so that the installation cost is reduced.

However, most pipelines are in a complex soil environment, and transported media are also corrosive, so that the inner wall and the outer wall of the pipeline can be corroded, once the pipeline is corroded and perforated, oil and gas leakage is caused, transportation is interrupted, the environment can be polluted, even fire can be caused, and harm is caused, and therefore the oil field pipeline anti-corrosion equipment is provided.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an oil field pipe anti-corrosion device, compared with the existing oil field pipe, the oil field pipe anti-corrosion device has the advantages that the protective casing pipe arranged at the outer end of the oil field pipe can isolate the external soil and corrosive impurities, and can avoid a plurality of adverse effects caused by medium leakage in the pipe after the oil field pipe is subjected to corrosion perforation, when the protective casing pipe is subjected to corrosion perforation, the gas between the oil field pipe and the protective casing pipe is discharged, so that the movable plug is descended due to gravity without being supported by air pressure, the gas transmitted for the gas guide pipe after being extruded is different by utilizing a plurality of air storage cylinders with different diameters, the rising height of the guide plug is determined according to the quantity of the transmitted gas, and therefore, workers can conveniently and quickly judge the specific position of the corrosion perforation of the protective casing pipe, meanwhile, when the guide plug rises, a reminding function is triggered to attract the attention of people, so that the repair can be carried out quickly and timely.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

An oil field pipe conveying anticorrosion device, wherein a protective sleeve is sleeved on an oil field pipe, a plurality of uniformly distributed sealing ring plates are fixedly connected between the oil field pipe and the protective sleeve, a plurality of gas guide thin pipes are inserted on the sealing ring plates, a fixed inserting cylinder is fixedly connected between every two gas guide thin pipes on the protective sleeve, a ventilating cylinder is fixedly connected at the upper end of the fixed inserting cylinder, a moving plug is slidably connected inside the fixed inserting cylinder, a balancing weight is fixedly connected to the lower side wall of the moving plug, a squeezing rod is fixedly connected to the lower end of the balancing weight, a gas storage cylinder is fixedly connected to the lower side of the fixed inserting cylinder and communicated with the gas guide thin pipes on the lower side of the fixed inserting cylinder, a squeezing plug is slidably connected inside the gas storage cylinder, a reminding inserting cylinder is fixedly connected to the upper end of the protective sleeve, and a connecting pipe is fixedly connected between the bottom end of the fixed inserting cylinder and the gas guide thin pipes, the inside of the connecting pipe is connected with a guide plug in a sliding way.

Further, a magnetic ring block is sleeved at the outer end of the reminding inserting cylinder, magnetic blocks are arranged inside the guide plug and the magnetic ring block, the reminding inserting cylinder is fixedly connected with a limiting block above the magnetic ring block, the upper end of the reminding inserting cylinder is fixedly connected with two supporting plates, the two supporting plates are rotatably connected with a rotating round rod, the two ends of the rotating round rod are fixedly connected with fixed square rods, the upper side wall of the magnetic ring block is fixedly connected with two positioning plates, a limiting groove matched with the fixed square rods is chiseled on one side wall of each positioning plate, the fixed square rod is positioned in the limiting groove, the rotary round rod is positioned between the two supporting plates and is fixedly connected with a connecting short cylinder, the reminding bell is fixedly connected to the lower side wall of the connecting short cylinder, and the reminding function of the connecting short cylinder can be triggered in the process of guiding the plug to rise, so that people can be noticed.

Furthermore, the inner walls of the left side and the right side of the ventilating cylinder are rotatably connected with fixed rotary cylinders, a support brittle rod is fixedly connected between the two fixed rotary cylinders, a connecting rope is wound at the center of the support brittle rod, the other end of the connecting rope is fixedly connected with the movable plug, a connecting disc is fixedly connected onto one of the fixed rotary cylinders, a bolt is connected onto the ventilating cylinder in a threaded mode and is in contact with the connecting disc, the ventilating cylinder can play a role in hanging the movable plug under a normal state, and therefore the static state of the movable plug is kept.

Furthermore, the diameters of the extrusion rods are different, the inner diameters of the gas storage cylinders are matched with the diameters of the extrusion rods above the gas storage cylinders respectively, and the specific positions of the corrosion perforation of the protective casing can be judged by the different characteristics of gas transmission of the gas storage cylinders with different diameters.

Further, the inside fixedly connected with sealing ring of deposit section of thick bamboo, sealing ring top fixedly connected with spring beam, the sealing ring below is provided with the ball sealer, fixedly connected with extension spring between ball sealer and the spring beam avoids the air in the air conduction tubule to get into inside the deposit section of thick bamboo, leads to other inside air stocks of deposit section of thick bamboo to change, influences the judgement that the staff corroded the perforation position to the protective casing.

Furthermore, the upper side wall of the connecting short cylinder is fixedly connected with the wind sail, so that the resistance of wind can be improved, and the connecting short cylinder can easily shake under the thrust of wind.

Furthermore, the reminding is carved with the scale mark on the side wall of the inserting barrel, and the reminding is made of transparent materials, so that maintenance personnel can observe and judge the specific position of the corrosion perforation of the protective casing.

Further, remind a ventilative net of inserting a section of thick bamboo upper end fixedly connected with, can play and block water and dirt-proof effect, avoid external impurity to influence the rise of guide stopper.

Furthermore, the maximum bearing weight of the support brittle rod is less than the weight of the balancing weight, and the support brittle rod can break under the condition that the movable plug is not supported by air pressure.

Furthermore, a plurality of through holes are drilled in the ventilating cylinder, the outer end of the ventilating cylinder is coated with a layer of ventilating water-blocking material, and the problem that the movable plug descends due to the influence of negative pressure inside the ventilating cylinder when the movable plug descends is avoided.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the scheme is that the protective sleeve arranged at the outer end of the oil field pipeline not only can play an isolation role on external soil and corrosive impurities, but also can avoid a plurality of adverse effects caused by medium leakage in the oil field pipeline after the oil field pipeline is subjected to corrosion perforation, when the protective sleeve is subjected to corrosion perforation, air pressure generated between the oil field pipeline and the protective sleeve due to gravity extrusion of a balancing weight is discharged, so that a movable plug descends due to gravity without being supported by the air pressure, the air storage cylinders with different diameters are arranged, so that the air conveyed for an air guide tubule after the extrusion plug is extruded is different, the ascending height of the guide plug is determined according to the quantity of the conveyed air, thereby facilitating the workers to quickly judge the specific position of the corrosion perforation of the protective sleeve, and simultaneously triggering a reminding function when guiding to rise to arouse attention of people, and then can be repaired quickly and timely.

(2) Remind and insert a section of thick bamboo outer end cover and be equipped with magnetic force ring piece, guide stopper and the inside magnetic force piece that all is provided with of magnetic force ring piece, it is located magnetic force ring piece top fixedly connected with stopper to remind to insert a section of thick bamboo, remind two backup pads of the fixedly connected with of a section of thick bamboo upper end, it is connected with the rotation round bar to rotate in two backup pads, rotate the equal fixedly connected with fixed square pole in round bar both ends, two locating plates of lateral wall fixedly connected with on the magnetic force ring piece, the relative lateral wall of two locating plates is opened and is chiseled and have the spacing groove with fixed square pole assorted, and fixed square pole is located the spacing inslot, it is located the short section of thick bamboo of fixedly connected with connection between two backup pads to rotate the round bar, connect the short section of thick bamboo lower lateral wall fixedly connected with and remind the bell, can be at the ascending in-process of guide stopper, trigger the warning function of connecting the short section of thick bamboo, so that arouse people's attention.

(3) The inner walls of the left side and the right side of the ventilating cylinder are rotatably connected with fixed rotary cylinders, the brittle rods are fixedly connected between the two fixed rotary cylinders and supported, the centers of the supported brittle rods are connected with connecting ropes in a winding mode, the other ends of the connecting ropes are fixedly connected with the movable plug, one of the fixed rotary cylinders is fixedly connected with a connecting disc, the ventilating cylinder is provided with a bolt in a threaded connection mode, the bolt is in contact with the connecting disc, the movable plug can be suspended in a normal state, and accordingly the static state of the movable plug is kept.

(4) The diameters of the extrusion rods are different, the inner diameters of the gas storage cylinders are respectively matched with the diameters of the extrusion rods above the gas storage cylinders, and the specific positions of the corrosion perforation of the protective casing pipe can be judged by the characteristics that the gas storage cylinders with different diameters transmit gas and are different.

(5) The inside fixedly connected with sealing ring of air storage cylinder, sealing ring top fixedly connected with spring beam, the sealing ring below is provided with the ball sealer, fixedly connected with extension spring between ball sealer and the spring beam, avoids the air in the air conduction tubule to get into inside the air storage cylinder, leads to other air stocks inside the air storage cylinder to change, influences the staff to the judgement in lag tube corruption perforation position.

(6) The upper side wall of the connecting short cylinder is fixedly connected with the wind sail, so that the resistance of wind can be improved, and the wind sail can easily shake under the thrust of wind.

(7) The reminding is carved with the scale mark on the side wall of the inserting barrel, and the reminding inserting barrel is made of transparent materials, so that maintenance personnel can observe and judge the specific position of the corrosion perforation of the protective casing.

(8) Remind and insert a section of thick bamboo upper end fixedly connected with ventilative net, can play and block water and dirt-proof effect, avoid external impurity to influence the rise of guide stopper.

(9) The maximum bearing weight of the support brittle rod is less than the weight of the balancing weight, and the support brittle rod can break under the condition that the movable plug is not supported by air pressure.

(10) A plurality of through holes are drilled on the ventilating cylinder, the outer end of the ventilating cylinder is coated with a layer of ventilating water-blocking material, and the problem that the moving plug moves due to the influence of negative pressure inside the ventilating cylinder when the moving plug descends is avoided.

Drawings

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is an enlarged view at C of FIG. 2;

FIG. 6 is a schematic structural view of a reminder insert cartridge according to the present invention;

FIG. 7 is a diagram of the protective sleeve of the present invention after it has been pierced by corrosion;

fig. 8 is a state diagram when the guide member of the present invention is raised.

The reference numbers in the figures illustrate:

1 oil field pipeline, 2 protective sleeve, 3 sealing ring plate, 4 gas guide tube, 5 fixed inserting cylinder, 51 ventilating cylinder, 511 fixed rotating cylinder, 512 supporting brittle rod, 513 connecting rope, 514 connecting disc, 515 bolt, 52 moving plug, 53 balancing weight, 54 extruding rod, 6 gas storage cylinder, 61 sealing ring, 62 spring rod, 63 sealing ball, 64 extruding plug, 65 stretching spring, 7 reminding inserting cylinder, 71 connecting tube, 72 guiding plug, 73 magnetic ring block, 74 magnetic block, 75 limiting block, 81 supporting plate, 82 rotating round rod, 83 fixed square rod, 84 positioning plate, 85 connecting short cylinder, 86 wind sail, 87 reminding bell and 88 ventilating net.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-4, an oil field pipe anticorrosion apparatus comprises an oil field pipe 1, a protective casing 2 is sleeved on the oil field pipe 1, a plurality of uniformly distributed sealing ring plates 3 are fixedly connected between the oil field pipe 1 and the protective casing 2, the sealing ring plates 3 are bonded with the oil field pipe 1 by sealant, so as to achieve good sealing effect, a plurality of sealing ring plates 3 are inserted with gas guide tubes 4, a fixed inserting cylinder 5 is fixedly connected between every two gas guide tubes 4 of the protective casing 2, a gas permeable cylinder 51 is fixedly connected with the upper end of the fixed inserting cylinder 5, a movable plug 52 is slidably connected inside the fixed inserting cylinder 5, a counter weight 53 is fixedly connected with the lower side wall of the movable plug 52, an extrusion rod 54 is fixedly connected with the lower end of the counter weight 53, a gas storage cylinder 6 is fixedly connected with the lower side of the fixed inserting cylinder 5 of the gas guide tubes 4, and the gas storage cylinder 6 is communicated with the gas guide tubes 4, the inner part of the gas storage cylinder 6 is connected with an extrusion plug 64 in a sliding manner, the upper end of the protection sleeve 2 is fixedly connected with a reminding plug 7, the protection sleeve 2 provided with the reminding plug 7 is positioned on one section of the ground and is convenient for a worker to check, a connecting pipe 71 is fixedly connected between the bottom end of the fixed plug 5 and the gas guide tube 4, a guide plug 72 is connected in the connecting pipe 71 in a sliding manner, when the protection sleeve 2 is corroded and perforated, air pressure generated between the oilfield pipeline 1 and the protection sleeve 2 due to gravity extrusion of a balancing weight 53 is discharged, so that the movable plug 52 descends due to gravity without being supported by the air pressure, the inner walls of the left side and the right side of the ventilating cylinder 51 are both rotatably connected with fixed rotary drums 511, a supporting brittle rod 512 is fixedly connected between the two fixed rotary drums 511, a connecting rope 513 is wound at the center of the supporting brittle rod 512, the other end of the connecting rope 513 is fixedly connected with the movable plug 52, a connecting disc 514 is fixedly connected on one fixed rotary drum 511, the ventilation cylinder 51 is connected with a bolt 515 through a thread, the bolt 515 is in contact with the connecting disc 514, the maximum bearing weight of the support brittle rod 512 is less than the weight of the balancing weight 53, the movable plug 52 is supported under the condition that air pressure does not exist, the support brittle rod 512 is broken due to the fact that the weight of the balancing weight 53 cannot be supported, please refer to fig. 7, the balancing weight 53 continues to move downwards, and the extrusion rod 54 is driven to extrude the extrusion plug 64.

Referring to fig. 1 and 4, the diameters of the extrusion rods 54 are different, the inner diameters of the gas storage cylinders 6 are respectively matched with the diameters of the extrusion rods 54 above the gas storage cylinders 6, the diameters of the gas storage cylinders 6 are different, so that the gas transmitted to the gas guide tube 4 by the gas storage cylinders 6 is also different, the guide plug 72 is driven by the gas to move upwards, scale marks are carved on the side wall of the reminding plug tube 7, the reminding plug tube 7 is made of a transparent material, and at the moment, a worker can calculate the ascending height of the guide plug 72 through the scale marks, so that the specific position of the corrosion perforation of the protective sleeve 2 is deduced.

Referring to fig. 5-6, the outer end of the reminding inserting cylinder 7 is sleeved with a magnetic ring block 73, the magnetic block 74 is arranged inside the guiding plug 72 and the magnetic ring block 73, the reminding inserting cylinder 7 is fixedly connected with a limiting block 75 above the magnetic ring block 73, the upper end of the reminding inserting cylinder 7 is fixedly connected with two supporting plates 81, the two supporting plates 81 are rotatably connected with a rotating round rod 82, the two ends of the rotating round rod 82 are fixedly connected with fixed square rods 83, the upper side wall of the magnetic ring block 73 is fixedly connected with two positioning plates 84, one side wall of the two positioning plates 84 opposite to the fixed square rods 83 is provided with limiting grooves, the fixed square rods 83 are arranged inside the limiting grooves, the rotating round rod 82 is positioned between the two supporting plates 81 and is fixedly connected with a connecting short cylinder 85, the lower side wall of the connecting short cylinder 85 is fixedly connected with a reminding bell 87, and in a normal state, the guiding plug 72 and the magnetic block 74 in the magnetic ring block 73, can play a fixed action to magnetic ring piece 73, when guide stopper 72 rises, please refer to fig. 8, magnetic ring piece 73 passes through the spacing of stopper 75, make magnetic ring piece 73 break away from with guide stopper 72, consequently magnetic ring piece 73 drops along with gravity, pull locating plate 84 simultaneously, make fixed square bar 83 break away from the spacing of locating plate 84, make and connect short section of thick bamboo 85 and can rotate, side wall fixed connection has wind sail 86 on connecting short section of thick bamboo 85, under the effect of wind, wind-force blows wind sail 86 and swings, make and remind bell 87 to rock and make a sound, arouse maintenance personal's attention.

Referring to fig. 3-4, a sealing ring 61 is fixedly connected inside the air storage cylinder 6, a spring rod 62 is fixedly connected above the sealing ring 61, a sealing ball 63 is arranged below the sealing ring 61, and an extension spring 65 is fixedly connected between the sealing ball 63 and the spring rod 62, so that the situation that air inside the air guide tube 4 enters the air storage cylinder 6 to cause the change of air storage inside other air storage cylinders 6 and influence the judgment of the worker on the corrosion perforation position of the protective sleeve 2 can be avoided.

Referring to fig. 6, the ventilation net 88 is fixedly connected to the upper end of the reminding insertion cylinder 7, so that water blocking and dust preventing effects can be achieved, and the rising height of the guide plug 72 is prevented from being influenced by external impurities.

Referring to fig. 3, a plurality of through holes are drilled on the ventilation cylinder 51, and a layer of ventilation water-blocking material is coated on the outer end of the ventilation cylinder 51 to prevent the movable plug 52 from falling due to the negative pressure inside the ventilation cylinder 51 when the movable plug 52 falls.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.