CN114216431B - Waterproof device and waterproof sealing method for wiring of well drilling wall monitoring sensor - Google Patents
Waterproof device and waterproof sealing method for wiring of well drilling wall monitoring sensor Download PDFInfo
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- CN114216431B CN114216431B CN202111530468.8A CN202111530468A CN114216431B CN 114216431 B CN114216431 B CN 114216431B CN 202111530468 A CN202111530468 A CN 202111530468A CN 114216431 B CN114216431 B CN 114216431B
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- junction box
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- cover plate
- sealing ring
- cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5205—Sealing means between cable and housing, e.g. grommet
- H01R13/5208—Sealing means between cable and housing, e.g. grommet having at least two cable receiving openings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
Abstract
The wiring waterproof device comprises a wiring cylinder which is sleeved on a wire connected with the sensor, the wiring cylinder is filled with epoxy resin, and screw caps are screwed outside two ends of the wiring cylinder. The problems that the sensor in the water-containing weak stratum is easy to be water-filled and invalid are solved, a first waterproof layer is formed by conducting waterproof treatment on a lead of the sensor, a second waterproof layer is formed by conducting waterproof treatment on a first junction box, a third waterproof layer is formed by conducting waterproof treatment on the first junction box and the second junction box, normal operation of the monitoring sensor is guaranteed through the third waterproof layer, normal and orderly development of monitoring and analysis operation is guaranteed, and therefore the purpose of popularizing application of drilling in the water-containing soft rock stratum is achieved. The waterproof sealing method can effectively prevent the underground water from entering the sensor to cause the sensor to fail, and ensures the stability and the credibility of the monitoring data.
Description
Technical Field
The application relates to the technical field of drilling information construction by a drilling method, in particular to a wiring waterproof device of a drilling well wall monitoring sensor and a waterproof sealing method.
Background
When a deep vertical shaft is newly built in some mining areas, deep water-containing weak stratum is to be penetrated, most of the stratum is chalk-type and dwarf-type stratum, the stratum is late in diagenetic, weak in cementing and low in strength, and is sanded and slimed when meeting water, and the stratum is rich in water and is a pore-crack water-bearing layer, so that grouting and water sealing effects are poor, the stratum is difficult to pass by adopting a common method for construction, and a special method is required to be used for drilling. The well drilling method has the advantages of safe construction, high mechanization degree, reliable well wall quality, no freezing hole water guide risk after well completion and the like, and is a construction method which needs popularization and application.
In order to analyze the reliability of the well wall and ensure the safe operation of the well shaft, the method has very important engineering significance for monitoring the stress deformation of the well wall of the well in the process of sinking the well of a deep and water-containing weak rock stratum by using a well drilling method. Because the well wall of the well is big in size, every monitoring sensor's wire is longer, if the wire epidermis is damaged in burying installation, concrete jolt ramming in-process, the infiltration water is likely to get into monitoring sensor inside, will lead to testing sensor to become invalid, can't monitor. In order to ensure that the monitoring work is carried out for a long time, the wiring of the sensor is required to be subjected to omnibearing waterproof sealing treatment, otherwise, once groundwater permeates into the sensor, the accuracy of test data cannot be ensured.
For the above reasons, there is a need for a waterproof device and waterproof sealing method for a borehole wall monitoring sensor wiring.
Disclosure of Invention
The application aims to provide a wiring waterproof device and a waterproof sealing method for a well drilling wall monitoring sensor, which ensure the normal work of the monitoring sensor and the accurate monitoring data and the normal analysis work through three waterproof treatments.
In order to achieve the above object, the present application provides the following technical solutions:
a wiring waterproof device of a well wall monitoring sensor for well drilling comprises a wiring cylinder,
the wiring cylinder is sleeved on a wire connected with the sensor, the inside of the wiring cylinder is filled with epoxy resin, and screw caps are screwed outside the two ends of the wiring cylinder.
Further, in the wiring waterproof device of the well wall monitoring sensor for well drilling, the wiring waterproof device further comprises a first sealing ring, wherein the first sealing ring is arranged in two ends of the wiring cylinder, and a metal gasket is arranged between the first sealing ring and the threaded cap; preferably, the wiring cylinder comprises annular protrusions arranged at two ends, the cross section of each protrusion is of a triangular structure, a right-angle side of each triangle is connected with the wiring cylinder, a hypotenuse of each triangle faces the inner side of the wiring cylinder, the wiring cylinder and each protrusion are of an integral structure, and the first sealing ring is a conical rubber sealing ring capable of being matched with the protrusions.
Further, in the wiring waterproof device of the well wall monitoring sensor of the well drilling, the wiring waterproof device further comprises a first junction box, wherein a wire connected with the sensor enters the first junction box after passing through the junction box; the first junction box is a niche type junction box.
Further, in the wiring waterproof device for the borehole wall monitoring sensor, the first junction box comprises a first box body, a first cover plate and a second cover plate, the first box body is provided with a side wall and a bottom plate, one end of the side wall is connected with the bottom plate, the other end of the side wall can be connected with the first cover plate or the second cover plate respectively, the first cover plate or the second cover plate is used for covering the first box body, preferably, the other end of the side wall extends outwards to form a protruding edge, grooves are formed in positions corresponding to the protruding edge and the first cover plate and the second cover plate, a second sealing ring is arranged in the grooves, and the second sealing ring can seal the joint of the protruding edge and the first cover plate or the second cover plate; the first case is integrally formed.
Further, in the wiring waterproof device for the well wall monitoring sensor of the well drilling, a plurality of first through holes are formed in the bottom plate, a plurality of conduits are arranged on the outer surface of the bottom plate, one conduit is communicated with one first through hole, a wire connected with the sensor passes through the wiring barrel and then enters the first junction box through the conduit, a first hollow compression nut is sleeved outside the wire, a part of the first hollow compression nut enters the conduit, the first hollow compression nut is in threaded connection with the inner wall of the conduit, a third sealing ring is arranged in the conduit, the third sealing ring is a conical rubber sealing ring, and the first hollow compression nut can squeeze the third sealing ring to enable the third sealing ring to seal the first through hole penetrated by the wire; the number of the wire conduits is the same as the number of the sensors, and wires connected with one sensor pass through one wire conduit and enter the first junction box.
Further, in the wiring waterproof device of the well wall monitoring sensor for well drilling, a second through hole is formed in the second cover plate, a first cable tube is arranged on the outer surface of the cover plate, the second through hole is communicated with the first cable tube, a cable enters the first junction box from the first cable tube, a second hollow compression nut is sleeved outside the cable, a part of the second hollow compression nut enters the cable tube, the second hollow compression nut is in threaded connection with the inner wall of the first cable tube, a fourth sealing ring is arranged in the first cable tube, the fourth sealing ring is a conical rubber sealing ring, and the second hollow compression nut can extrude the fourth sealing ring to enable the fourth sealing ring to seal the second through hole through which the cable passes.
Further, in the waterproof device for the wiring of the borehole wall monitoring sensor, the waterproof device further comprises a second junction box, wherein the second junction box is positioned inside the first junction box, and the wires entering the first junction box are connected into the second junction box; the second junction box is of a box body structure with an open upper end, a third through hole is formed in the lower end of the second junction box, a second cable pipe is arranged on the outer surface of the lower end of the second junction box, the third through hole is communicated with the second cable pipe, a cable entering the first junction box enters the second junction box from the second cable pipe, a third hollow compression nut is sleeved outside the cable, a part of the third hollow compression nut enters the second cable pipe, the third hollow compression nut is in threaded connection with the inner wall of the second cable pipe, a cable core wire of the cable is connected with a wire in the second junction box and is wound with a waterproof adhesive tape, a fifth sealing ring is arranged in the second cable pipe, and the fifth sealing ring is a conical rubber sealing ring and can be extruded by the third hollow compression nut so that the fifth sealing ring seals the third through hole through which the cable passes.
Further, in the wiring waterproof device for the well wall monitoring sensor, the second junction box is a cylindrical junction box, one end of the second junction box is opened, when the second junction box is mounted inside the first junction box, the first box body can be covered by the second cover plate, and the second junction box is filled with epoxy resin.
On the other hand, the waterproof sealing method by using the wiring waterproof device of the well wall monitoring sensor for well drilling comprises the following steps:
s1, in a laboratory, conducting wires of a sensor are subjected to waterproof treatment by using a wiring cylinder, so that water is prevented from entering the sensor along a sensor core wire to form a first waterproof path;
s2, leading the wires of each sensor into a first junction box through a first hollow compression nut, a wire pipe and a third sealing ring, and preventing high-pressure seepage water in concrete from entering the first junction box along the wires of the sensors in the sinking of a well wall and the use process to form a second waterproof;
and S3, when the well wall is sunk, the cable passes through the second cover plate, then the cable is led into the second junction box, the cable core wires are in butt joint with the sensor wires in the first junction box according to the number one by one, all the junction heads are put into the second junction box, and the second junction box is filled with epoxy resin for sealing, so that a third waterproof effect is formed.
Further, in the above-mentioned waterproof sealing method, in the step S1, the wire of the sensor is waterproof treated by using the wire barrel, the wire is cut off at a position 28-32cm away from the sensor, then the wire is connected to the wire barrel, the core wire skin of the wire is peeled off, and the core wire is reconnected; placing the wire joint in a wiring cylinder after connection is completed, placing a first sealing ring at one side of a wiring cylinder body, then placing a metal gasket, screwing a threaded cap at one end of the wiring cylinder, pouring epoxy resin into the wiring cylinder, placing the first sealing ring at the other side of the wiring cylinder body after the epoxy resin is solidified, placing the metal gasket, screwing a threaded cap at the other end of the wiring cylinder, and preventing water from entering the sensor along an internal core wire of a wire to form a first waterproof path; in the step S2, after the reinforcing mesh of the well wall of the well drilling is bound, all sensors are installed to the appointed position of the well wall, the wires of each sensor sequentially pass through a first hollow compression nut and a wire conduit and then are led into a first junction box, the first hollow compression nut is compressed, a first cover plate is covered, the first cover plate is screwed by bolts, the well wall is prevented from sinking, and high-pressure penetrating water in concrete enters the first junction box along the wires of the sensors in the using process, so that a second waterproof channel is formed; before the well wall of the well of the concrete pouring well, the first cover plate is tightly attached to the outer surface of the inner template of the pouring template and is fixed; after the concrete is poured and the pouring template is removed, the first cover plate can be opened, the measurement of early hydration heat release, shrinkage deformation and the like of the well wall concrete is carried out by adopting an instrument through the lead wires of each sensor, and after the measurement is finished, the first cover plate is covered; in the step S3, when the well wall is sunk, the first cover plate is dismounted, a cable of a control signal passes through the second cover plate through a first cable pipe of the second cover plate, then the cable is led into the second junction box through a second cable pipe of the second junction box, cable core wires are in butt joint with wires in the first junction box according to the number one by one, waterproof adhesive tapes are wound on the wires, all the junction heads are put into the second junction box, and epoxy resin is filled in the second junction box for sealing, so that a third waterproof effect is formed; and finally, placing the second junction box in the first junction box, covering the second cover plate, screwing the second cover plate by bolts, and guiding the cable to a ground measuring station.
The application discloses a wiring waterproof device of a well wall monitoring sensor for well drilling and a waterproof sealing method, which solve the problem that the sensor in a water-containing weak stratum is easy to be water-filled and invalid, and the purposes of popularizing the application of a well drilling method in the water-containing soft rock stratum are achieved by performing waterproof treatment on a lead of the sensor to form a first waterproof, performing waterproof treatment on a first junction box to form a second waterproof, performing waterproof treatment on the first junction box and the second junction box to form a third waterproof, ensuring the normal work of the monitoring sensor through the three waterproof and ensuring the normal and orderly development of the monitoring and analysis work. The waterproof sealing method can effectively prevent the underground water from entering the sensor to cause the sensor to fail, and ensures the stability and the credibility of the monitoring data.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. Wherein:
fig. 1 is a schematic cross-sectional view of a wire barrel according to an embodiment of the application.
Fig. 2 is a schematic cross-sectional view of a first junction box according to an embodiment of the application.
Fig. 3 is a schematic cross-sectional view of a second junction box according to an embodiment of the application.
Fig. 4 is a schematic perspective view of a first case according to an embodiment of the application.
Fig. 5 is a schematic perspective view of a first cover plate according to an embodiment of the application.
Fig. 6 is a schematic perspective view of a second cover plate according to an embodiment of the application.
Reference numerals illustrate: 1, a wiring cylinder; 10 a first sealing ring; 11 screw cap; 12 metal gaskets; 13, bulges; 2, conducting wires; 20 wire skins; 21 a sensor core wire skin; 22 sensor core wire; 3 a first junction box; 30 a first cassette; 31 side walls; a 32-bottom plate; 33 a first through hole; 34 a first cover plate; a second cover plate 35; 36 convex edges; 37 a second seal ring; 38 conduit; 39 a first hollow compression nut; 40 a third seal ring; 41 a second through hole; 42 a first cable tube; 43 screw holes; 44 grooves; 5 a second junction box; 50 a third through hole; a second cable tube 51; 52 a fifth seal ring; 53 a third hollow compression nut; 6, a cable; 60 cable skins; 61 cable core wire skin; 62 cable core wires; 7 epoxy resin.
Detailed Description
The application will be described in detail below with reference to the drawings in connection with embodiments. The examples are provided by way of explanation of the application and not limitation of the application. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present application encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.
In the description of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present application and do not require that the present application must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. The terms "coupled," "connected," and "configured" as used herein are to be construed broadly and may be, for example, fixedly connected or detachably connected; can be directly connected or indirectly connected through an intermediate component; either a wired electrical connection, a radio connection or a wireless communication signal connection, the specific meaning of which terms will be understood by those of ordinary skill in the art as the case may be.
One or more examples of the application are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the application. As used herein, the terms "first," "second," and "third," etc. are used interchangeably to distinguish one component from another and are not intended to represent the location or importance of the individual components.
According to the embodiment of the application, as shown in fig. 1 to 6, a wiring waterproof device for a drilling well wall monitoring sensor is provided, the waterproof device is suitable for performing waterproof treatment on the drilling well wall stress deformation monitoring sensor of a deep water-containing weak stratum, and as shown in fig. 1, the wiring waterproof device comprises a wiring cylinder 1, the wiring cylinder 1 is sleeved on a wire 2 connected with the sensor, the inside of the wiring cylinder 1 is filled with epoxy resin 7, threads are arranged on the outer sides of two ends of a pipe body of the wiring cylinder 1, screw caps 11 are screwed on the outer sides of two ends of the wiring cylinder 1, and the inner threads of the screw caps 11 are matched with the threads of the pipe body of the wiring cylinder 1. The wiring cylinder 1 is arranged on the wire 2 at a position which is 28 cm to 32cm away from the sensor, the wiring cylinder 1 can carry out waterproof treatment on the wire 2, and water is prevented from entering the sensor along the sensor core wire 22 inside the wire 2, so that the first waterproof way is formed.
Further, the wiring waterproof device further comprises a first sealing ring 10, wherein the first sealing ring 10 is arranged in both ends of the wiring cylinder 1, and a metal gasket 12 is arranged between the first sealing ring 10 and the threaded cap 11; preferably, the wiring cylinder 1 comprises annular protrusions 13 arranged at two ends, the cross section of each protrusion 13 is of a triangular structure, a right-angle side of the triangle is connected with the wiring cylinder 1, the hypotenuse of the triangle faces the inner side of the wiring cylinder 1, the wiring cylinder 1 and the protrusions 13 are of an integral structure, and the first sealing ring 10 is a conical rubber sealing ring which can be matched with the protrusions 13. Screw caps 11 at two ends of the wiring cylinder 1 are screwed, the screw caps 11 extrude the first sealing ring 10 through the metal gasket 12, so that the first sealing ring 10 is tightly attached to a bulge 13 on the wiring cylinder 1, and the wiring cylinder 1 is effectively sealed.
Further, as shown in fig. 2 and 4, the waterproof device for wiring also comprises a first junction box 3, and a wire 2 connected with the sensor enters the first junction box 3 after passing through the wiring cylinder 1; the first terminal box 3 is a niche type terminal box. The first junction box 3 is embedded into the well wall, and after concrete is poured, the sensor wire 2 in the first junction box 3 and corresponding instruments can be used for measuring early hydration heat release, shrinkage deformation and other data of the well wall concrete.
Further, as shown in fig. 2 and fig. 4-6, the first junction box 3 includes a first box body 30, a first cover plate 34 and a second cover plate 35, the first box body 30 has a side wall 31 and a bottom plate 32, one end of the side wall 31 is connected with the bottom plate 32, the other end of the side wall 31 can be connected with the first cover plate 34 or the second cover plate 35 respectively, the first cover plate 34 or the second cover plate 35 is used for covering the first box body 30, preferably, the other end of the side wall 31 extends outwards to form a convex edge 36, grooves 44 are respectively arranged at corresponding positions of the convex edge 36 and the first cover plate 34 and the second cover plate 35, a second sealing ring 37 is a circular rubber sealing ring, the second sealing ring 37 can seal a joint of the convex edge 36 and the first cover plate 34 or the second cover plate 35, preferably, screw holes 43 are respectively arranged at corresponding positions of the convex edge 36 and the first cover plate 34 and the second cover plate 35, the screw holes 43 are matched with screw holes 43 in the convex edge 36 of the first cover plate 34 and the second cover plate 35, bolts are respectively arranged in the concave edges 43 and the concave edges 43 of the convex edge 36 and the second cover plate 35 of the first junction box 3, and the second sealing ring 37 are fixedly connected with the first cover plate 34 and the second cover plate 35 through the grooves 44; the first case 30 is integrally formed.
Further, as shown in fig. 2 and 4, a plurality of first through holes 33 are formed in the bottom plate 32, a plurality of conduits 38 are formed in the outer surface of the bottom plate 32, one conduit 38 is communicated with one first through hole 33, a wire 2 connected with a sensor passes through the wire tube 38 and enters the first junction box 3 after passing through the junction box 1, a first hollow compression nut 39 is sleeved outside the wire 2, a part of the first hollow compression nut 39 enters the conduit 38, the first hollow compression nut 39 is in threaded connection with the inner wall of the conduit 38, a third sealing ring 40 is arranged in the conduit 38, the third sealing ring 40 is a conical rubber sealing ring, and the first hollow compression nut 39 can squeeze the third sealing ring 40 to enable the third sealing ring 40 to seal the first through hole 33 through which the wire 2 passes; the number of the conduits 38 is the same as the number of the sensors, the wires 2 connected to one sensor correspond to one conduit 38, and the wires 2 connected to one sensor pass through one conduit 38 into the first junction box 3. After the well drilling well wall reinforcing steel bar net is bound, all sensors are installed to the well wall appointed position, the lead 2 of each sensor is led into the first junction box 3 through the lead pipe 38, the first hollow compression nut 39 is screwed down, the first hollow compression nut 39 is made to extrude the third sealing ring 40 to seal the first through hole 33 of the lead 2 entering the first junction box 3, and high-pressure penetrating water in concrete enters the first junction box 3 along the sensor lead 2 in the well wall pouring process and the well wall sinking and using process is prevented, so that a second waterproof channel is formed. Before the well wall of the concrete pouring well is drilled, the first cover plate 34 is mounted on the first junction box 3 through bolts, the joint of the first junction box 3 and the first cover plate 34 is sealed by the second sealing ring 37, the waterproof treatment of the first junction box 3 is achieved, and high-pressure penetrating water in concrete is prevented from entering the first junction box 3 in the concrete pouring process. The first cover plate 34 is contacted with the inner template of the casting template, and after the casting template is poured and removed, the instrument can be adopted to measure early hydration heat release, shrinkage deformation and the like of the well wall concrete through the lead wires 2 of each sensor.
Further, as shown in fig. 6, a second through hole 41 is formed in the second cover plate 35, a first cable tube 42 is formed in the outer surface of the cover plate, the second through hole 41 is communicated with the first cable tube 42, a cable 6 enters the first junction box 3 from the first cable tube 42, a second hollow compression nut is sleeved outside the cable 6, a part of the second hollow compression nut enters the cable 6 tube, the second hollow compression nut is in threaded connection with the inner wall of the first cable tube 42, a fourth sealing ring is arranged in the first cable tube 42 and is a conical rubber sealing ring, and the second hollow compression nut can squeeze the fourth sealing ring to enable the fourth sealing ring to seal the second through hole 41 through which the cable 6 passes. High-pressure penetrating water in concrete is prevented from entering the first junction box 3 along the sensor wire 2 in the well wall sinking and use process, so that a second waterproof way is formed.
Further, as shown in fig. 3, the waterproof device for wire connection further comprises a second junction box 5, the second junction box 5 is positioned inside the first junction box 3, and the wires 2 entering the first junction box 3 are connected into the second junction box 5; the second junction box 5 is of a box body structure with an open upper end, a third through hole 50 is formed in the lower end of the second junction box 5, a second cable tube 51 is arranged on the outer surface of the lower end of the second junction box 5, the third through hole 50 is communicated with the second cable tube 51, a cable 6 entering the first junction box 3 enters the second junction box 5 from the second cable tube 51, a third hollow compression nut 53 is sleeved outside the cable 6, a part of the third hollow compression nut 53 enters the second cable tube 51, the third hollow compression nut 53 is in threaded connection with the inner wall of the second cable tube 51, a cable core wire 62 and a wire 2 are connected in the second junction box 5 and are wound with waterproof adhesive tapes, a fifth sealing ring 52 is arranged in the second cable tube 51, the fifth sealing ring 52 is a conical rubber sealing ring, and the third hollow compression nut 53 can squeeze the fifth sealing ring 52, so that the fifth sealing ring 52 seals the third through hole 50 through which the cable 6 passes. The second junction box 5 is a cylindrical junction box, one end of the second junction box 5 is opened, and when the second junction box 5 is mounted inside the first junction box 3, the first box body 30 can be covered with the second cover plate 35, and the second junction box 5 is filled with the epoxy resin 7. The cable 6 includes a cable skin 60, a cable core skin 61, and a cable core 62. When the well wall is sinking, the first cover plate 34 is detached, the second cover plate 35 is replaced, the cables 6 with 30-40 cores for control signals penetrate through the second cover plate 35 and are led into the second junction box 5, the cable core wires 62 are in butt joint with the wires 2 in the first junction box 3 according to the number one by one, all the wiring heads are put into the second junction box 5, the second hollow compression nut is screwed down, and the second hollow compression nut extrudes the fourth sealing ring to seal the second through hole 41 penetrated by the cables 6; and (3) screwing the third hollow compression nut 53, enabling the third hollow compression nut 53 to extrude the fifth sealing ring 52 to seal the third through hole 50 through which the cable 6 passes, filling the second junction box 5 with epoxy resin 7, placing the second junction box 5 into the first junction box 3 after the epoxy resin 7 is solidified, mounting the second cover plate 35 onto the first junction box 3 through bolts to form a third waterproof, and finally guiding the cable 6 to a ground measuring station.
The application also discloses a method for performing waterproof sealing by using the wiring waterproof device of the well drilling well wall monitoring sensor, which comprises the following steps:
s1, in a laboratory, conducting wires 2 of a sensor are subjected to waterproof treatment by using a wiring cylinder 1, so that water is prevented from entering the sensor along a sensor core wire 22 to form a first waterproof path;
carrying out waterproof treatment on a wire 2 of a sensor by using a wire barrel 1, cutting off the wire 2 at a position which is 28 cm to 32cm away from the sensor, wherein the wire 2 comprises a wire skin 20, a sensor core wire skin 21 and a sensor core wire 22, stripping the wire skin 20 and the sensor core wire skin 21, then connecting the wire 2 into the wire barrel 1, stripping the sensor core wire skin 21 of the wire 2, reconnecting the sensor core wire 22 and winding an insulating tape; after connection is completed, the joint of the wire 2 is placed in the wiring cylinder 1, a first sealing ring 10 is placed on one side of the pipe body of the wiring cylinder 1, then a metal gasket 12 is placed, a threaded cap 11 at one end of the wiring cylinder 1 is screwed on, the threaded cap 11 presses the first sealing ring 10 through pushing the metal gasket 12 to seal one end of the wiring cylinder 1, then epoxy resin 7 is poured into the wiring cylinder 1, after the epoxy resin 7 is solidified, the first sealing ring 10 is placed on the other side of the pipe body of the wiring cylinder 1, the metal gasket 12 is placed on the threaded cap 11 at the other end of the wiring cylinder 1, the threaded cap 11 presses the first sealing ring 10 through pushing the metal gasket 12 to seal the other end of the wiring cylinder 1, and water is prevented from entering the sensor along a sensor core wire 22 of the wire 2 to form first waterproof.
S2, the lead wires 2 of the sensors are led into the first junction box 3 through the first hollow compression nut 39, the lead pipe 38 and the third sealing ring 40, so that the sinking of the well wall and the entry of high-pressure penetrating water in concrete into the first junction box 3 along the lead wires 2 of the sensors in the using process are prevented, and a second waterproof way is formed.
Machining a first junction box 3 in a laboratory, wherein one end of the first junction box 3 with a bottom plate 32 is a wiring terminal, wiring terminals of the first junction box 3 are provided with the same number of wire conduits 38 as the sensors, and threads matched with first hollow compression nuts 39 are reserved on the inner surface of the wiring conduits; a plurality of screw holes 43 corresponding to the first cover plate 34 are processed on the convex edge 36 connected with the side wall 31 of the first junction box 3, two grooves 44 are processed on the convex edge 36, two grooves 44 matched with the convex edge 36 are processed on the edges of the first cover plate 34 and the second cover plate 35, and a second sealing ring 37 is placed in the grooves 44; after the well drilling well wall reinforcing steel bar net is bound, all sensors are installed to the well wall appointed position, the lead 2 of each sensor sequentially passes through the first hollow compression nut 39 and the lead pipe 38 and then is led into the first junction box 3, the third sealing ring 40 is placed in the lead pipe 38, and the third sealing ring 40 is extruded by screwing and compressing the first hollow compression nut 39, so that each sensor lead 2 can be waterproof-sealed when being connected into the first junction box 3. The first cover plate 34 is covered, and is screwed by bolts, so that the sinking of the well wall and the entering of high-pressure penetrating water in the concrete into the first junction box 3 along the sensor wire 2 in the using process are prevented, and a second waterproof way is formed; before the well wall of the well is cast with concrete, the first cover plate 34 is tightly attached to the outer surface of the inner template of the casting template and fixed; after the concrete is poured and the pouring template is removed, the first cover plate 34 can be opened, the measurement of early hydration heat release, shrinkage deformation and the like of the well wall concrete is carried out by adopting an instrument through the lead wires 2 of each sensor, and after the measurement is finished, the first cover plate 34 is covered.
S3, when the well wall is sunk, the cable 6 passes through the second cover plate 35, then the cable 6 is led into the second junction box 5, the cable core wires 62 are in butt joint with the sensor wires 2 in the first junction box 3 according to the number one by one, all the wiring heads are put into the second junction box 5, and the second junction box 5 is filled with epoxy resin 7 for sealing, so that a third waterproof effect is formed.
When a second junction box 5 is processed in a laboratory and a well wall is sunken, a first cover plate 34 is dismounted, a multi-core armored control signal cable 6 passes through the second cover plate 35 through a first cable pipe 42 of the second cover plate 35, then the cable 6 is led into the second junction box 5 through a second cable pipe 51 of the second junction box 5, a second through hole 41 through which the cable 6 passes is subjected to waterproof treatment by extruding a fourth sealing ring through a second hollow compression nut, a third through hole 50 through which the cable 6 passes is subjected to waterproof treatment by extruding a fifth sealing ring 52 through a third hollow compression nut 53, cable cores 62 are in butt joint with wires 2 in the first junction box 3 according to the number one by one and are wound with waterproof adhesive tapes, all the wiring heads are put into the second junction box 5, and the second junction box 5 is filled with epoxy resin 7 for sealing, so that a third waterproof channel is formed; finally, the second junction box 5 is placed in the first junction box 3, the second cover plate 35 is covered and screwed down by bolts, the first junction box 3 is subjected to waterproof treatment by the second sealing ring 37, and the cable 6 is led to the ground station.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
the utility model provides a well wall monitoring sensor wiring watertight fittings and waterproof sealing method of well drilling, the problem that sensor easily intakes inefficacy in the weak stratum of moisture has been solved, carry out waterproof treatment to wire 2 of sensor and form first waterproof, carry out waterproof treatment to first terminal box 3 and form the waterproof of second, carry out waterproof treatment to first terminal box 3 and second terminal box 5 and form the waterproof of third, guarantee monitoring sensor normal work through three waterproof, ensure monitoring analysis work normal orderly development, in order this reaches the purpose of popularization well drilling method sinking in the soft stratum of moisture application. The waterproof sealing method can effectively prevent the underground water from entering the sensor to cause the sensor to fail, and ensures the stability and the credibility of the monitoring data.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (11)
1. A wiring waterproof device of a well wall monitoring sensor for well drilling is characterized by comprising a wiring cylinder,
the wiring cylinder is sleeved on a lead connected with the sensor, the inside of the wiring cylinder is filled with epoxy resin, and screw caps are screwed outside two ends of the wiring cylinder;
the sensor comprises a sensor body, a sensor, a first junction box and a second junction box, wherein the sensor body is provided with a sensor, and the sensor body is provided with a sensor;
the first junction box comprises a first box body, a first cover plate and a second cover plate, wherein the first box body is provided with a side wall and a bottom plate, one end of the side wall is connected with the bottom plate, the other end of the side wall can be respectively connected with the first cover plate or the second cover plate, the first cover plate or the second cover plate is used for covering the first box body,
the other end of the side wall extends outwards to form a convex edge, grooves are formed in the positions, corresponding to the convex edge, of the first cover plate and the second cover plate, a second sealing ring is arranged in the grooves, the second sealing ring can seal the joint of the convex edge and the first cover plate or the second cover plate,
the bottom plate is provided with a plurality of first through holes, the outer surface of the bottom plate is provided with a plurality of conduits, one conduit is communicated with one first through hole, a wire connected with the sensor passes through the wire barrel and then enters the first junction box from the conduit, a first hollow compression nut is sleeved outside the wire, a part of the first hollow compression nut enters the conduit, the first hollow compression nut is in threaded connection with the inner wall of the conduit,
the novel wire guide tube is characterized in that a third sealing ring is arranged in the wire guide tube, and the first hollow compression nut can extrude the third sealing ring to enable the third sealing ring to seal the first through hole through which the wire passes.
2. The wellbore wall monitoring sensor wiring waterproof device of claim 1, wherein,
the wire connecting barrel further comprises a first sealing ring, wherein one first sealing ring is arranged in each of the two ends of the wire connecting barrel, and a metal gasket is arranged between the first sealing ring and the threaded cap.
3. The wellbore wall monitoring sensor wiring waterproof device of claim 2, wherein,
the wiring cylinder comprises annular protrusions arranged at two ends, the cross section of each protrusion is of a triangular structure, a right-angle side of each triangle is connected with the wiring cylinder, the inclined side of each triangle faces the inner side of the wiring cylinder, the wiring cylinder and the protrusions are of an integral structure, and the first sealing ring is a conical rubber sealing ring capable of being matched with the protrusions.
4. The wellbore wall monitoring sensor wiring waterproof device of claim 1, wherein,
the first junction box is a niche type junction box.
5. The wellbore wall monitoring sensor wiring waterproof device of claim 1, wherein,
screw holes are formed in the positions, corresponding to the first cover plate and the second cover plate, of the protruding edge, bolts are arranged in the screw holes, the screw holes are arranged on the periphery of the groove, and the protruding edge is fixedly connected with the first cover plate or the second cover plate through the bolts;
the first case is integrally formed.
6. The borehole wall monitoring sensor wiring waterproof device as set forth in claim 5, wherein,
the third sealing ring is a conical rubber sealing ring,
the number of the wire conduits is the same as the number of the sensors, and wires connected with one sensor pass through one wire conduit and enter the first junction box.
7. The borehole wall monitoring sensor wiring waterproof device as set forth in claim 5, wherein,
the second cover plate is provided with a second through hole, the outer surface of the cover plate is provided with a first cable pipe, the second through hole is communicated with the first cable pipe, a cable enters the first junction box from the first cable pipe, a second hollow compression nut is sleeved outside the cable, a part of the second hollow compression nut enters the cable pipe, the second hollow compression nut is in threaded connection with the inner wall of the first cable pipe,
the first cable tube is internally provided with a fourth sealing ring, the fourth sealing ring is a conical rubber sealing ring, and the second hollow compression nut can extrude the fourth sealing ring, so that the fourth sealing ring seals the second through hole through which the cable passes.
8. The borehole wall monitoring sensor wiring waterproof device as set forth in claim 5, wherein,
the second junction box is positioned inside the first junction box, and the wires entering the first junction box are connected into the second junction box;
the second junction box is of a box body structure with an open upper end, a third through hole is arranged at the lower end of the second junction box, a second cable pipe is arranged on the outer surface of the lower end of the second junction box, the third through hole is communicated with the second cable pipe, a cable entering the first junction box enters the second junction box from the second cable pipe, a third hollow compression nut is sleeved outside the cable, a part of the third hollow compression nut enters the second cable pipe, the third hollow compression nut is in threaded connection with the inner wall of the second cable pipe,
the cable core wire of the cable is connected with the lead wire in the second junction box and is wound with waterproof adhesive tape,
the second cable pipe is internally provided with a fifth sealing ring, the fifth sealing ring is a conical rubber sealing ring, and the third hollow compression nut can extrude the fifth sealing ring to enable the fifth sealing ring to seal the third through hole through which the cable passes.
9. The wellbore wall monitoring sensor wiring waterproof device of claim 8, wherein,
the second terminal box is cylindrical terminal box, the one end of second terminal box is opened, when the second terminal box is installed to the inside of first terminal box, utilizes the second apron can cover first box body, be full of epoxy in the second terminal box.
10. A waterproof sealing method using the wiring waterproof device for a borehole wall monitoring sensor according to any one of claims 1 to 9, comprising the steps of:
s1, in a laboratory, conducting wires of a sensor are subjected to waterproof treatment by using a wiring cylinder, so that water is prevented from entering the sensor along a sensor core wire to form a first waterproof path;
s2, leading the wires of each sensor into a first junction box through a first hollow compression nut, a wire pipe and a third sealing ring, and preventing high-pressure seepage water in concrete from entering the first junction box along the wires of the sensors in the sinking of a well wall and the use process to form a second waterproof;
and S3, when the well wall is sunk, the cable passes through the second cover plate, then the cable is led into the second junction box, the cable core wires are in butt joint with the sensor wires in the first junction box according to the number one by one, all the junction heads are put into the second junction box, and the second junction box is filled with epoxy resin for sealing, so that a third waterproof effect is formed.
11. The method of watertight sealing as claimed in claim 10, characterized in that,
in the step S1, conducting wires of the sensor are subjected to waterproof treatment by using a wiring cylinder, the conducting wires are cut off at a position which is 28 cm to 32cm away from the sensor, then the conducting wires are connected into the wiring cylinder, the core wire skin of the conducting wires is peeled off, and the core wires are reconnected; placing the wire joint in a wiring cylinder after connection is completed, placing a first sealing ring at one side of a wiring cylinder body, then placing a metal gasket, screwing a threaded cap at one end of the wiring cylinder, pouring epoxy resin into the wiring cylinder, placing the first sealing ring at the other side of the wiring cylinder body after the epoxy resin is solidified, placing the metal gasket, screwing a threaded cap at the other end of the wiring cylinder, and preventing water from entering the sensor along an internal core wire of a wire to form a first waterproof path;
in the step S2, after the reinforcing mesh of the well wall of the well drilling is bound, all sensors are installed to the appointed position of the well wall, the wires of each sensor sequentially pass through a first hollow compression nut and a wire conduit and then are led into a first junction box, the first hollow compression nut is compressed, a first cover plate is covered, the first cover plate is screwed by bolts, the well wall is prevented from sinking, and high-pressure penetrating water in concrete enters the first junction box along the wires of the sensors in the using process, so that a second waterproof channel is formed; before the well wall of the well of the concrete pouring well, the first cover plate is tightly attached to the outer surface of the inner template of the pouring template and is fixed; after the concrete is poured and the pouring template is removed, opening the first cover plate, measuring early hydration heat release and shrinkage deformation of the well wall concrete by adopting an instrument through the lead of each sensor, and covering the first cover plate after the measurement is finished;
in the step S3, when the well wall is sunk, the first cover plate is dismounted, a cable of a control signal passes through the second cover plate through a first cable pipe of the second cover plate, then the cable is led into the second junction box through a second cable pipe of the second junction box, cable core wires are in butt joint with wires in the first junction box according to the number one by one, waterproof adhesive tapes are wound on the wires, all the junction heads are put into the second junction box, and epoxy resin is filled in the second junction box for sealing, so that a third waterproof effect is formed; and finally, placing the second junction box in the first junction box, covering the second cover plate, screwing the second cover plate by bolts, and guiding the cable to a ground measuring station.
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