CN114923130A - Transmitting and receiving device and method for in-pipeline detector and in-pipeline detector - Google Patents
Transmitting and receiving device and method for in-pipeline detector and in-pipeline detector Download PDFInfo
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- CN114923130A CN114923130A CN202210518192.XA CN202210518192A CN114923130A CN 114923130 A CN114923130 A CN 114923130A CN 202210518192 A CN202210518192 A CN 202210518192A CN 114923130 A CN114923130 A CN 114923130A
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- branch pipe
- gas pipeline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
- F16L55/38—Constructional aspects of the propulsion means, e.g. towed by cables driven by fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/40—Constructional aspects of the body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pipeline Systems (AREA)
Abstract
The invention relates to the field of gas pipeline detection, and discloses a receiving and transmitting device of a pipeline internal detector, a receiving and transmitting method adopting the receiving and transmitting device to receive and transmit the internal detector and an internal detector capable of adopting the receiving and transmitting device to receive and transmit. The receiving and sending device comprises a main cylinder for conveying the internal detector, a first valve and a second valve are respectively arranged at the first end of the main cylinder and on the main cylinder, the gas pipeline comprises a first branch pipe and a second branch pipe which are sequentially arranged along the gas conveying direction, and the second end of the main cylinder is communicated with the first branch pipe and the second branch pipe through a three-way valve; the gas pipeline gas supply device comprises a branch cylinder for gas to pass through, wherein the first end of the branch cylinder is communicated with a main cylinder, the communication position of the branch cylinder and the main cylinder is positioned between a first valve and a second valve, the second end of the branch cylinder is communicated with a first branch pipe or a second branch pipe of a gas pipeline, and a third valve is arranged on the branch cylinder. When in use, the in-pipeline detector transceiver can be displaced according to requirements.
Description
Technical Field
The invention relates to the field of gas pipeline detection, in particular to a transmitting and receiving device and a transmitting and receiving method of a pipeline internal detector and an internal detector.
Background
At present, the common detection mode of a gas pipeline is to arrange an inner detector inside the gas pipeline, the cross section of the inner detector along the direction perpendicular to the axis of the gas pipeline is circular, the diameter of the circular cross section is equal to the inner diameter of the gas pipeline, when the inner detector is arranged inside the gas pipeline, the gas pipeline is divided into a gas inlet section and a gas outlet section which are mutually independent by the inner detector, the pressure of the gas inlet section and the gas outlet section is adjusted, the two ends of the inner detector are enabled to have pressure difference, and the inner detector is driven by the pressure difference to move along the length direction of the gas pipeline to realize the inner detection of the gas pipeline. Compared with external detection, the internal detection does not need to detect the pipeline excavation, and manpower and materials are effectively saved. However, the internal detector needs to be placed in the gas pipeline or taken out of the gas pipeline by means of the transceiver, the existing transceiver is fixed in position and cannot be displaced as required, and when the gas pipeline is buried, the transceiver is buried at the required position, so that the detection of the gas pipeline is very inconvenient.
Therefore, how to realize the shifting of the transceiver becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a transceiver for an in-pipe detector, a transceiving method for transceiving an in-pipe detector using the transceiver, and an in-pipe detector capable of transceiving using the transceiver.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a transmitting and receiving device of a detector in a pipeline, comprising: the gas pipeline comprises a first branch pipe and a second branch pipe which are sequentially arranged along the gas conveying direction, the second end of the main cylinder is communicated with the first branch pipe and the second branch pipe through a three-way valve, the diameter of the main cylinder is equal to that of the gas pipeline, and the internal detector can sequentially penetrate through the first valve, the second valve and the three-way valve to enter the gas pipeline; the branch cylinder is used for allowing gas to pass through, a first end of the branch cylinder is communicated with the main cylinder, the communication position of the branch cylinder and the main cylinder is located between the first valve and the second valve, a second end of the branch cylinder is communicated with a first branch pipe or a second branch pipe of a gas pipeline, a third valve used for controlling the opening or closing of the branch cylinder is arranged on the branch cylinder, and the first valve, the second valve and the third valve are all two-way valves; and the pressure regulating device is used for regulating the internal pressure of the main cylinder and the branch cylinder.
The invention also provides a transceiving method of the transceiving device of the in-pipeline detector for transceiving the in-pipeline detector, when the in-pipeline detector is arranged in the gas pipeline, the transceiving method comprises the following steps:
step one, opening the first valve, closing the second valve, the pressure regulating device, the three-way valve and the third valve, placing the internal detector into the main cylinder, and placing the internal detector between the communication position of the branch cylinder and the main cylinder and the second valve;
step two, closing the first valve and the pressure regulating device, opening the second valve and the third valve to enable gas conveyed by the gas pipeline to enter the main cylinder through the first branch pipe and the branch cylinder, and enabling the three-way valve to be in a state of closing the first branch pipe and communicating the main cylinder with the second branch pipe, so that the gas pushes the inner detector to move into the second branch pipe;
after the internal detector completely enters the second branch pipe, enabling the three-way valve to be in a state of closing the main cylinder and communicating the first branch pipe with the second branch pipe, and closing the first valve, the pressure regulating device, the second valve and the third valve to enable the gas in the gas pipeline to return to a normal conveying state, wherein the gas pushes the internal detector to move in the gas pipeline to start detection operation on the gas pipeline;
step four, opening the pressure regulating device, closing the first valve, the second valve and the third valve, placing the three-way valve in a state of closing the main cylinder and communicating the first branch pipe with the second branch pipe, starting to release the pressure of the gas in the main cylinder and the branch cylinder, and finishing the throwing operation when the pressure detected by the pressure detection mechanism is equal to the external air pressure;
when the internal detector is taken out from the inside of the gas pipeline, the method comprises the following steps:
before the internal detector reaches the three-way valve, putting the three-way valve in a state of closing the second branch pipe and communicating the first branch pipe with the main cylinder, opening the second valve and the third valve, and closing the first valve and the pressure regulating device;
after the gas pushes the inner detector into the main cylinder, the three-way valve is placed in a state of closing the main cylinder and communicating the first branch pipe with the second branch pipe, the second valve is placed in an open state, and the first valve, the third valve and the pressure regulating device are all placed in a closed state, so that the inner detector enters the main cylinder and is in a static state;
and step three, opening the pressure regulating device, closing the first valve, the second valve and the third valve, arranging the three-way valve in a state of closing the main cylinder and enabling the first branch pipe and the second branch pipe to be communicated, when the pressure regulating device regulates the pressure in the main cylinder and the branch cylinder to be equal to the external air pressure, the recovery operation is completed, and at the moment, the first valve is opened to take out the internal detector.
The invention also provides an internal detector capable of receiving and transmitting by using the internal detector for the gas pipeline, which comprises: the gas pipeline comprises at least two spherical structures arranged side by side, wherein the diameter of each spherical structure is equal to that of a gas pipeline, and any two adjacent spherical structures are connected through a flexible connecting piece; the defect detection device is arranged inside the spherical structure and is used for detecting the structural defects of the gas pipeline; the defect positioning device is arranged in the spherical structure and is used for determining the position of the structural defect; and the power supply device is arranged inside the spherical structure, and the defect detection device and the defect positioning device are electrically connected with the power supply device.
Compared with the prior art, the invention has the following technical effects:
when the detector is required to be received and transmitted, the three-way valve of the detector transmitting and receiving device in the pipeline provided by the invention is used for replacing the two-way valve at the corresponding position (determined according to actual detection requirements), and the branch cylinder is communicated with the first branch pipe or the second branch pipe (the first branch pipe and the second branch pipe refer to the two branch pipes communicated with the two-way valve) according to the actual requirements. This detector send-receiver device in pipeline's send-receiver device can shift as required, has effectively solved current send-receiver device and can not shift and lead to the gas pipeline to detect very inconvenient problem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an in-pipeline detector transceiver provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a step one when the in-pipeline detector transceiver provided in the embodiment of the present invention places the internal detector inside the gas pipeline;
fig. 3 is a schematic structural diagram of a second step when the in-pipeline detector transceiver provided in the embodiment of the present invention places the internal detector inside the gas pipeline;
fig. 4 is a schematic structural diagram corresponding to step three when the in-pipeline detector transceiver provided in the embodiment of the present invention places the internal detector inside the gas pipeline;
fig. 5 is a schematic structural diagram of a step one when the in-pipe detector transceiver provided in the embodiment of the present invention takes out the in-pipe detector from the inside of the gas pipe;
fig. 6 is a schematic structural diagram of a second step when the transceiver of the in-pipeline detector provided in the embodiment of the present invention takes out the in-pipeline detector from the inside of the gas pipeline;
fig. 7 is a schematic structural diagram of an internal detector provided in an embodiment of the present invention.
Fig. 1-7 reference numbers illustrate: 100. an internal detector; 200. a detector transceiver in the pipeline; 1. a spherical structure; 2. a defect positioning device; 3. a power supply device; 4. a data storage device; 5. an exciting coil; 6. a low frequency electromagnetic probe; 7. a crack detection mechanism; 8. a flexible connector; 9. a gas pipeline; 901. a first branch pipe; 902. a second branch pipe; 10. a main barrel; 11. a first valve; 12. a second valve; 13. a three-way valve; 14. supporting a cylinder; 15. a third valve; 16. a pressure regulating device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 to 6, the in-pipe detector transceiver 200 provided in this embodiment includes: a main cylinder 10 for conveying an internal detector, a first valve 11 is arranged at a first end of the main cylinder 10, a second valve 12 is arranged on the main cylinder 10, the first valve 11 and the second valve 12 are both used for controlling the opening or closing of the main cylinder 10, the gas pipeline 9 comprises a first branch pipe 901 and a second branch pipe 902 which are sequentially arranged along the conveying direction of gas (the gas conveyed by the gas pipeline 9), the gas conveyed by the gas pipeline 9 firstly passes through the first branch pipe 901 and then passes through the second branch pipe 902, a second end of the main cylinder 10 is communicated with the first branch pipe 901 and the second branch pipe 902 through a three-way valve 13, the diameter of the main cylinder 10 is equal to that of the gas pipeline 9, and the internal detector can sequentially pass through the first valve 11, the second valve 12 and the three-way valve 13 to enter the inside of the gas pipeline 9; the gas pipeline device comprises a branch cylinder 14 for allowing gas to pass through, wherein a first end of the branch cylinder 14 is communicated with a main cylinder 10, the communication position of the branch cylinder 14 and the main cylinder 10 is located between a first valve 11 and a second valve 12, a second end of the branch cylinder 14 is communicated with a first branch pipe 901 or a second branch pipe 902 of a gas pipeline 9, a third valve 15 for controlling the opening or closing of the branch cylinder 14 is arranged on the branch cylinder 14, and the first valve 11, the second valve 12 and the third valve 15 are all two-way valves; and a pressure adjusting device 16 for adjusting the internal pressure of the main tube 10 and the branch tube 14.
When the detector needs to be received and transmitted, the three-way valve 13 of the detector transceiver 200 in the pipeline provided by the invention is used for replacing the two-way valve at the corresponding position (according to the actual detection requirement), and the branch cylinder 14 is communicated with the first branch pipe 901 or the second branch pipe 902 (the first branch pipe 901 and the second branch pipe 902 specifically refer to two branch pipes communicated with the two-way valve) according to the actual requirement. This detector send-receiver device 200's in pipeline send-receiver device can shift as required, has effectively solved current send-receiver device and can not shift and lead to gas pipeline 9 to detect very inconvenient problem.
In the present embodiment, in order to prevent the detector from entering the inside of the branch tube 14, the diameter of the branch tube 14 is smaller than that of the main tube 10. The diameter of the branch cylinder 14 in this embodiment is specifically, but not limited to, one third of the diameter of the main cylinder 10, and is only exemplified here.
In this embodiment, in order to facilitate disassembly and assembly, the first end of the three-way valve 13 and the second end of the main cylinder 10 are both provided with first flanges, and the two first flanges are detachably connected; a second flange is arranged at the second end of the three-way valve 13 and one end of the first branch pipe 901, and the two second flanges are detachably connected; the third end of the three-way valve 13 and one end of the second branch pipe 902 are both provided with a third flange, and the two third flanges are detachably connected.
In this embodiment, the side wall of the gas pipeline 9 is provided with an opening, and the support 14 is communicated with the gas pipeline 9 through the opening. And after the receiving and sending are finished, the gas pipeline 9 is restored to the original appearance through hole repairing operation.
In the present embodiment, specifically, the first valve 11, the second valve 12 and the three-way valve 13 are all ball valves.
In the present embodiment, specifically, the pressure regulating device 16 is disposed between the first valve 11 and the second valve 12, and the pressure regulating device 16 includes a pressure detecting mechanism and an exhaust stop valve, both of which are disposed on the main cylinder 10.
The in-pipe detector transceiver device 200 provided by the present embodiment has the following advantages:
the feeding and the recovery of the inner detector are finished under the normal conveying working condition of the gas pipeline 9, the normal conveying of the gas pipeline 9 is not influenced, and the inner detector has the characteristics of easiness in installation, detachability and no influence on the original structure of the pipeline.
The present embodiment provides a method for transceiving an internal detector by using the in-pipe detector transceiving apparatus 200, when the internal detector is placed inside the gas pipe 9, comprising the following steps:
step one, as shown in fig. 2, opening a first valve 11, closing a second valve 12, an exhaust cut-off valve, a three-way valve 13 and a third valve 15, placing an internal detector into a main cylinder 10, and placing the internal detector between a communication position of a branch cylinder 14 and the main cylinder 10 and the second valve 12;
step two, as shown in fig. 3, closing the first valve 11 and the exhaust stop valve, opening the second valve 12 and the third valve 15 to make the gas delivered from the gas pipeline 9 enter the main cylinder 10 through the first branch pipe 901 and the branch cylinder 14, and making the three-way valve 13 in a state of closing the first branch pipe 901 and making the main cylinder 10 communicate with the second branch pipe 902, so that the gas pushes the internal detector to move into the second branch pipe 902;
step three, as shown in fig. 4, after the internal detector completely enters the second branch pipe 902, the three-way valve 13 is in a state of closing the main cylinder 10 and communicating the first branch pipe 901 with the second branch pipe 902, and the first valve 11, the exhaust stop valve, the second valve 12 and the third valve 15 are closed, so that the gas in the gas pipeline 9 is recovered to a normal delivery state, and the gas pushes the internal detector to move in the gas pipeline 9 to start detection operation on the gas pipeline 9;
and step four, opening the exhaust stop valve, closing the first valve 11, the second valve 12 and the third valve 15, placing the three-way valve 13 in a state of closing the main cylinder 10 and communicating the first branch pipe 901 with the second branch pipe 902, at this time, releasing the pressure of the gas in the main cylinder 10 and the branch cylinder 14, when the pressure detected by the pressure detection mechanism is equal to the external air pressure, completing the putting operation, removing the connection between the three-way valve 13 and the branch cylinder 14 and the gas pipeline 9, and recovering the structure of the original gas pipeline 9.
When the internal detector is taken out from inside the gas duct 9, the following steps are included:
step one, as shown in fig. 5, before the internal detector reaches the three-way valve 13, the three-way valve 13 is set to a state of closing the second branch pipe 902 and communicating the first branch pipe 901 with the main cylinder 10, and the second valve 12 and the third valve 15 are opened, and the first valve 11 and the exhaust cut-off valve are closed;
step two, as shown in fig. 6, after the gas pushes the internal detector into the main cylinder 10, the three-way valve 13 is set to a state of closing the main cylinder 10 and communicating the first branch pipe 901 with the second branch pipe 902, the second valve 12 is set to an open state and the first valve 11, the third valve 15 and the exhaust stop valve are all set to a closed state, and at this time, the internal detector enters the main cylinder 10 and is in a static state;
and step three, opening the exhaust stop valve, closing the first valve 11, the second valve 12 and the third valve 15, placing the three-way valve 13 in a state of closing the main cylinder 10 and communicating the first branch pipe 901 with the second branch pipe 902, at this time, the pressure in the main cylinder 10 and the branch cylinder 14 starts to be reduced, when the pressure detected by the pressure detection mechanism is equal to the external air pressure, completing the recovery operation, at this time, opening the first valve 11 to take out the internal detector, then removing the three-way valve 13 and the branch cylinder 14 from the connection with the gas pipeline 9, and recovering the original structure of the gas pipeline 9.
As shown in fig. 7, the present embodiment further provides an internal detector capable of receiving and transmitting by using a gas pipeline internal detector, which includes at least two spherical structures 1 arranged side by side, where the diameter of each spherical structure 1 is equal to the diameter of a gas pipeline 9, and any two adjacent spherical structures 1 are connected by a flexible connecting member 8; the defect detection device is arranged inside the spherical structure 1 and is used for detecting the structural defects of the gas pipeline 9; the defect positioning device 2 is arranged in the spherical structure 1, and the defect positioning device 2 is used for determining the position of the structural defect; the power supply device 3, the power supply device 3 sets up inside the spherical structure 1, and the defect detection device and the defect positioning device 2 are all connected with the power supply device 3 electricity.
In the specific use process, the internal detector 100 provided by this embodiment is placed in the gas pipeline 9, and since the diameter of the spherical structure 1 is equal to the diameter of the gas pipeline 9, after the internal detector 100 is placed in the gas pipeline 9, the gas pipeline is divided into two independent spaces by the internal detector 100 provided by this embodiment, and the pressure difference is formed at the two ends of the internal detector 100 by adjusting the pressure of the two independent spaces, under the action of the pressure difference, the internal detector 100 provided by this embodiment can move in the gas pipeline 9 along the direction of the gas pipeline 9, and along with the movement of the internal detector 100, the internal detector 100 can detect any position of the gas pipeline 9.
In this embodiment, the internal detector 100 further includes a data storage device 4, the data storage device 4 is used for storing the structural defect information detected by the defect detection device and the position information detected by the defect location device 2, and the data storage device 4 is electrically connected to the power supply device 3.
In this embodiment, as shown in fig. 7, the number of the spherical structures 1 is three, the defect detection device includes a volume defect detection mechanism for detecting a volume defect of a pipe wall of the gas pipeline 9 and a crack detection mechanism 7 for detecting a crack of the pipe wall of the gas pipeline 9, the volume defect detection mechanism and the crack detection mechanism 7 are both electrically connected to the power supply device 3, the volume defect detection mechanism and the crack detection mechanism 7 are both in communication connection with the data storage device 4, the volume defect detection mechanism, the crack detection mechanism 7 and the power supply device 3 are respectively disposed in the three spherical structures 1, the crack detection mechanism 7 and the data storage device 4 are disposed in the same spherical structure 1, and the defect positioning device 2 and the power supply device 3 are disposed in the same spherical structure 1. The data storage device 4 is used for storing the volume defect information detected by the volume defect detection mechanism, the pipe wall crack information detected by the crack detection mechanism 7 and the position information detected by the defect positioning device 2.
It should be noted that the at least two spherical structures 1 are provided for the purpose of conveniently arranging electronic components, in this embodiment, the electronic components specifically refer to the defect detecting device, the defect positioning device 2 and the power supply device 3, and the number of the spherical structures 1 is not limited to three, and may be determined according to actual needs as long as all the electronic components can be accommodated inside the spherical structures 1.
In this embodiment, as shown in fig. 7, the volume defect detecting mechanism includes an exciting coil 5 and a plurality of low-frequency electromagnetic probes 6 uniformly arranged along the circumference of the exciting coil 5, the plurality of exciting coils 5 are simultaneously uniformly arranged along the circumference of the spherical structure 1, each low-frequency electromagnetic probe 6 is used for detecting the volume defect of the gas pipeline 9, the crack detecting mechanism 7 includes a plurality of balanced electromagnetic detecting devices uniformly arranged along the circumference of the data storage device 4, the plurality of balanced electromagnetic detecting devices are simultaneously uniformly arranged along the circumference of the spherical structure 1, each balanced electromagnetic detecting device is used for detecting the crack of the gas pipeline 9, the exciting coil 5, the data storage device 4 and the flexible connecting member 8 are coaxially arranged, and the axis of the exciting coil 5 sequentially passes through the spherical centers of the three spherical structures 1. In the specific use process, the exciting coil 5 is applied with alternating current to generate a magnetic field, when the surface of the pipe wall of the gas pipeline 9 to be detected has volume defects, the space magnetic field at the position of the volume defects is changed, so that the magnetic signal receiving coil arranged in the low-frequency electromagnetic probe 6 picks up the space magnetic field, and the detection and analysis of the volume defects of the pipe wall are realized. The balanced electromagnetic detection device detects cracks of the gas pipeline 9 by using a balanced electromagnetic technology, and the specific structure of the balanced electromagnetic detection device belongs to the prior art, for example, the balanced electromagnetic detection system disclosed in the thesis "steel plate crack defect detection method based on the balanced electromagnetic technology — Yang puzzles". The low-frequency electromagnetic probe 6 detects the volume defect of the gas pipeline 9 by using a low-frequency electromagnetic detection technology, and the specific structure of the low-frequency electromagnetic probe 6 also belongs to the prior art, and is not described again. In addition, compared with the characteristics of heavy equipment and large running resistance of the traditional magnetic flux leakage detection technology (MFL), the low-frequency electromagnetic technology has the advantages of small equipment volume, light weight, larger detection range and the like, and has great advantages in detection operation in the low-pressure town gas pipeline environment.
In the present embodiment, the data storage device 4 includes a processor and a memory, and the defect detection device, the defect locating device 2 and the memory are all communicatively connected to the processor. The structural defect information detected by the defect detection device and the position information detected by the defect positioning device 2 are processed by the processor and then stored in the memory.
In the present embodiment, the defect locating device 2 is an inertial measurement unit. In a specific use process, the position of the defect can be determined after the information measured by the inertial measurement unit is processed. As to how to specifically process the information measured by the inertial measurement unit to determine the position of the defect belongs to the prior art, it is not described herein again.
In the present embodiment, the flexible connecting member 8 is a flexible gimbal.
In this embodiment, each spherical structure 1 is in interference fit with the gas pipeline 9. Can increase spherical structure 1 and gas pipeline 9 inside frictional force between through making spherical structure 1 and gas pipeline 9 interference fit, can slow down spherical structure 1's velocity of motion, and then can detect gas pipeline 9 better.
In this embodiment, the outer layer of each spherical structure 1 is a polyurethane layer. The polyurethane layer adopts the polyurethane material to make, and the polyurethane material has advantages such as light, adiabatic performance is superior, wear-resisting, ageing-resistant, hardness height, and these characteristics make the whole lighter of equipment, have good wearability in gas pipeline 9 operation in-process, can guarantee the integrality of equipment when suffering the striking in gas pipeline 9 operation in-process, effectively protect inside electronic components. The inner layer of each spherical structure 1 may be a polyurethane layer as well as other material layers, and may be a metal layer, for example, according to actual needs.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the foregoing, the description is not to be taken in a limiting sense.
Claims (10)
1. An in-pipe detector transceiver, comprising:
the gas pipeline comprises a first branch pipe and a second branch pipe which are sequentially arranged along the gas conveying direction, the second end of the main cylinder is communicated with the first branch pipe and the second branch pipe through a three-way valve, the diameter of the main cylinder is equal to that of the gas pipeline, and the internal detector can sequentially penetrate through the first valve, the second valve and the three-way valve to enter the gas pipeline;
the branch cylinder is used for allowing gas to pass through, a first end of the branch cylinder is communicated with the main cylinder, the communication position of the branch cylinder and the main cylinder is located between the first valve and the second valve, a second end of the branch cylinder is communicated with a first branch pipe or a second branch pipe of a gas pipeline, a third valve used for controlling the opening or closing of the branch cylinder is arranged on the branch cylinder, and the first valve, the second valve and the third valve are all two-way valves;
and the pressure regulating device is used for regulating the internal pressure of the main cylinder and the branch cylinder.
2. The in-pipe detector transceiver of claim 1, wherein the diameter of the branch cylinder is smaller than the diameter of the main cylinder.
3. The in-pipe detector transceiver according to claim 1, wherein a first flange is provided at each of a first end of the three-way valve and a second end of the main cylinder, and the two first flanges are detachably connected; a second flange is arranged at the second end of the three-way valve and at one end of the first branch pipe, and the two second flanges are detachably connected; and a third flange is arranged at the third end of the three-way valve and one end of the second branch pipe, and the two third flanges are detachably connected.
4. The in-pipe detector transceiver of claim 1, wherein the first valve, the second valve, and the three-way valve are ball valves.
5. The in-pipe detector transceiver of claim 1, wherein the pressure regulator is disposed between the first valve and the second valve, the pressure regulator including a pressure detection mechanism and an exhaust shutoff valve, the pressure detection mechanism and the exhaust shutoff valve both disposed on the primary barrel.
6. The in-pipe detector transceiver of any one of claims 1 to 5, wherein when said in-pipe detector is placed inside said gas pipe, comprising the steps of:
step one, opening the first valve, closing the second valve, the pressure regulating device, the three-way valve and the third valve, placing the internal detector into the main cylinder, and placing the internal detector between the communication position of the branch cylinder and the main cylinder and the second valve;
step two, closing the first valve and the pressure regulating device, opening the second valve and the third valve to enable gas conveyed by the gas pipeline to enter the main cylinder through the first branch pipe and the branch cylinder, and enabling the three-way valve to be in a state of closing the first branch pipe and communicating the main cylinder with the second branch pipe, so that the gas pushes the inner detector to move into the second branch pipe;
after the internal detector completely enters the second branch pipe, enabling the three-way valve to be in a state of closing the main cylinder and communicating the first branch pipe with the second branch pipe, and closing the first valve, the pressure regulating device, the second valve and the third valve to enable the gas in the gas pipeline to return to a normal conveying state, wherein the gas pushes the internal detector to move in the gas pipeline to start detection operation on the gas pipeline;
step four, opening the pressure regulating device, closing the first valve, the second valve and the third valve, placing the three-way valve in a state of closing the main cylinder and communicating the first branch pipe with the second branch pipe, and completing the putting operation when the pressure regulating device regulates the pressure in the main cylinder and the branch cylinder to be equal to the external air pressure;
when the inner detector is taken out from the inside of the gas pipeline, the method comprises the following steps:
before the internal detector reaches the three-way valve, the three-way valve is placed in a state that the second branch pipe is closed and the first branch pipe is communicated with the main cylinder, the second valve and the third valve are opened, and the first valve and the pressure regulating device are closed;
after the gas pushes the internal detector into the main cylinder, the three-way valve is placed in a state of closing the main cylinder and communicating the first branch pipe with the second branch pipe, the second valve is placed in an open state, the first valve, the third valve and the pressure regulating device are placed in a closed state, and the internal detector enters the main cylinder and is in a static state;
and step three, opening the pressure regulating device, closing the first valve, the second valve and the third valve, arranging the three-way valve in a state of closing the main cylinder and enabling the first branch pipe and the second branch pipe to be communicated, when the pressure regulating device regulates the pressure in the main cylinder and the branch cylinder to be equal to the external air pressure, the recovery operation is completed, and at the moment, the first valve is opened to take out the internal detector.
7. An internal detector capable of transceiving using the gas pipeline internal detector according to any one of claims 1 to 5, comprising:
the gas pipeline comprises at least two spherical structures which are arranged side by side, wherein the diameter of each spherical structure is equal to that of a gas pipeline, and any two adjacent spherical structures are connected through a flexible connecting piece;
the defect detection device is arranged inside the spherical structure and is used for detecting the structural defects of the gas pipeline;
the defect positioning device is arranged in the spherical structure and is used for determining the position of the structural defect;
and the power supply device is arranged inside the spherical structure, and the defect detection device and the defect positioning device are electrically connected with the power supply device.
8. The internal detector according to claim 7, further comprising a data storage device for storing structural defect information detected by said defect detection device and position information detected by said defect localization device, said data storage device being electrically connected to said power supply device.
9. The internal detector according to claim 8, characterized in that the number of said spherical structures is three, the defect detection device comprises a volume defect detection mechanism for detecting the volume defect of the pipe wall of the gas pipeline and a crack detection mechanism for detecting the crack of the pipe wall of the gas pipeline, the volume defect detection mechanism and the crack detection mechanism are both electrically connected with the power supply device, the volume defect detection mechanism and the crack detection mechanism are both in communication connection with the data storage device, the volume defect detection mechanism, the crack detection mechanism and the power supply device are respectively arranged in the three spherical structures, and the crack detection mechanism and the data storage device are arranged in the same spherical structure, and the defect positioning device and the power supply device are arranged in the same spherical structure.
10. The internal detector according to claim 9, wherein the volume defect detecting mechanism includes an excitation coil and a plurality of low-frequency electromagnetic probes uniformly arranged along a circumferential direction of the excitation coil, each of the low-frequency electromagnetic probes is used for detecting a volume defect of the gas pipeline, the crack detecting mechanism includes a plurality of balanced electromagnetic detecting devices uniformly arranged along a circumferential direction of the data storage device, each of the balanced electromagnetic detecting devices is used for detecting a crack of the gas pipeline, the excitation coil, the data storage device and the flexible connecting member are coaxially arranged, and an axis of the excitation coil sequentially passes through spherical centers of the three spherical structures.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210518192.XA CN114923130B (en) | 2022-05-12 | 2022-05-12 | Pipeline internal detector transmitting and receiving device, transmitting and receiving method and internal detector |
| ZA2022/06796A ZA202206796B (en) | 2022-05-12 | 2022-06-20 | Placement and withdrawal device for internal detector of pipeline, placement and withdrawal method, and internal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210518192.XA CN114923130B (en) | 2022-05-12 | 2022-05-12 | Pipeline internal detector transmitting and receiving device, transmitting and receiving method and internal detector |
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| CN114923130A true CN114923130A (en) | 2022-08-19 |
| CN114923130B CN114923130B (en) | 2023-03-31 |
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| CN202210518192.XA Active CN114923130B (en) | 2022-05-12 | 2022-05-12 | Pipeline internal detector transmitting and receiving device, transmitting and receiving method and internal detector |
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| CN114923130B (en) | 2023-03-31 |
| ZA202206796B (en) | 2022-08-31 |
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