CN210293518U - Device for monitoring corrosion and cable force of inhaul cable - Google Patents
Device for monitoring corrosion and cable force of inhaul cable Download PDFInfo
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- CN210293518U CN210293518U CN201921343698.1U CN201921343698U CN210293518U CN 210293518 U CN210293518 U CN 210293518U CN 201921343698 U CN201921343698 U CN 201921343698U CN 210293518 U CN210293518 U CN 210293518U
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Abstract
The utility model discloses a device for monitoring inhaul cable corrosion and cable force, which comprises a cable force monitoring sensor and a corrosion monitoring sensor for collecting inhaul cable inductance or resistance parameters; the cable force monitoring sensor and the corrosion monitoring sensor are integrated structures which are axially arranged along the inhaul cable and are both of a through structure. The utility model discloses a device of monitoring cable corrosion and cable force adopts the sensor of straight-through structure, and the cover is established on the steel strand wires or the steel wire of cable, with steel strand wires or steel wire as monitoring sensor's component, the cable force monitoring sensor after the installation is an independent unit with corrosion monitoring sensor, and synchronous power supply and data acquisition use a monitoring facilities, can possess the function of corruption, cable force monitoring simultaneously, and need not destroy the cable structure.
Description
Technical Field
The utility model relates to a monitoring devices especially relates to a device of monitoring cable corruption and cable force.
Background
The existing monitoring means for monitoring the internal corrosion of the inhaul cable is to use equipment to detect the corrosion condition outside the inhaul cable, or integrate an optical fiber sensor on a single steel wire of the steel wire inhaul cable to monitor the internal corrosion of the inhaul cable, but the optical fiber sensor is easy to damage in the installation process, and the long-term test precision of the sensor is influenced by the optical fiber sensor, such as temperature sensitivity, long-term performance instability of bonding adhesive strength and the like. The magnetic flux sensor is widely applied to long-term monitoring of the cable force of the inhaul cable, cable force change can be influenced by the corrosion condition of the inhaul cable, and the corrosion data has an extremely important effect on analysis of the cable force data. The measuring principle of the magnetic flux sensor is based on the electromagnetic induction phenomenon, so that the measuring methods of the stay cable corrosion sensor and the cable force monitoring sensor are mutually independent, and the difference of different affected factors of the installation mode, the installation position and the different measuring principles of the two sensors is not beneficial to the integration and the data analysis of a monitoring system.
In the prior art, magnetic flux sensing systems for cable force monitoring and corrosion monitoring are mainly divided into two types: 1. two sets of magnetic flux sensing systems are respectively adopted and respectively positioned at two parts of the inhaul cable for monitoring; 2. by adopting a set of sensing system, the cable force or corrosion condition can be monitored, and two parameters cannot be monitored simultaneously. The first monitoring system needs to adopt two sets of supporting facilities for power supply, data transmission and the like, and needs to form holes outside the inhaul cable for many times, so that the sealing performance of the inhaul cable is influenced; the second monitoring system can only monitor one parameter, and integration in real meaning are not achieved.
In the prior art, chinese patent CN106645387A discloses an integrated detection system of pulsed magnetoelastic and magnetic flux leakage for detecting the cable force and damage of a stay cable, which records the magnetic response process of the stay cable structure under the condition of pulsed excitation, and adopts a combined sensor to synchronously measure the surface magnetic flux leakage field and the magnetic induction intensity signal, which are respectively used for detecting and positioning the damage and measuring the cable force. The working modes of the sensor are divided into a cable force measuring mode and a damage detection mode. In the cable force measuring mode, a guide wheel is locked, a sensor is fixed at a certain specific position of a stay cable, signals of a Hall sensor, an induction coil and a temperature sensor under the pulse excitation condition are recorded, and the cable force fluctuation is reflected by using the characteristic parameter change in a hysteresis loop; in a damage detection mode, the sensor is dragged by a guide wheel to scan along a stay cable, the signal of the array ring of the tunnel magnetoresistive sensor under the pulse excitation condition is recorded, and the existence of the defect is judged by utilizing the change of parameters such as the amplitude value, the phase position and the like of the signal. The cable force and damage detection system adopts a set of magnetic flux sensor, only one parameter can be monitored, an integrated structure for monitoring two parameters (cable force and corrosion) in real time cannot be realized, the damage detection sensor is monitored by sliding through a pulley outside the sensor, the structure has errors in the cable force detection process, the detection precision is low, and the space required in the cable damage detection process is large.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a device of monitoring cable corrosion and cable force aims at solving current detecting system and can only monitor a parameter, can not realize the integrated structure of two kinds of parameters of real-time supervision (cable force and corruption), and there is the error at the in-process that cable force detected, the detection precision is lower, the great scheduling problem in the space that cable damage detection in-process needs.
The utility model discloses take following technical scheme to realize above-mentioned purpose:
a device for monitoring corrosion and cable force of a cable comprises a cable force monitoring sensor, a corrosion monitoring sensor for collecting inductance or resistance parameters of the cable, a data line and a power supply, wherein the cable force monitoring sensor and the corrosion monitoring sensor are of a straight-through structure, are sleeved on the cable and are connected at the end parts; the cable force monitoring sensor and the corrosion monitoring sensor transmit monitoring data through data lines and are connected with a power supply for power supply. The scheme adopts a sensor with a through structure, the sensor is sleeved on a steel strand or a steel wire of the inhaul cable, the steel strand or the steel wire is used as a component of a monitoring sensor, the steel strand or the steel wire is equivalent to a magnetic core, and the internal force of the inhaul cable is measured by the vibration (acceleration) of the inhaul cable at the installation position or the magnetic conductivity of a ferromagnetic component; the corrosion monitoring in the scheme adopts a sensor capable of acquiring the inductance parameter or the resistance parameter of the stay cable, and can adopt a structure fixedly connected with the stay cable to acquire data, and the structure can ensure higher monitoring precision when simultaneously monitoring the cable force and the corrosion data; and the installed cable force monitoring sensor and the corrosion monitoring sensor are independent units, power supply and data acquisition are synchronized, and one monitoring device is used, so that the cable force monitoring sensor and the corrosion monitoring sensor can have the functions of corrosion and cable force monitoring at the same time.
The further technical proposal is that the cable force monitoring sensor is provided with a plug or a socket which is connected with the circuit thereof; the corrosion monitoring sensor is provided with a socket or a plug connected with a circuit thereof; wherein the plug and the socket are connected. The scheme adopts the plug and the socket which are mutually matched, so that the structural integration of the two sensors is realized, and the power supply and data signal transmission integration of the two sensors is also realized; wherein, plug and socket can adopt the shell of rubber material, improve the reliability that two sensors are connected.
The technical scheme is that a clamp is arranged on an outer ring at the joint of the plug and the socket and used for further fixing the connection of the two sensors.
The further technical proposal is that the device is connected with the anchoring section or the free section of the inhaul cable. The sensor of integration in this scheme can be connected with the pressure strip of anchor section, also can be connected with the closing plate of cable free segment.
The further technical scheme is that the device is connected with the inhaul cable in a threaded or mortise-tenon mode.
The further technical scheme is that the cable force monitoring sensor is one of a magnetic flux sensor and an acceleration sensor. The magnetic flux sensor in the scheme determines the cable force by monitoring the magnetic conductivity of the steel strand or the steel wire; the acceleration sensor determines the cable force by monitoring the vibration (acceleration) of the steel strand or wire.
The further technical scheme is that the cable force monitoring sensor and the corrosion monitoring sensor are coaxial in structure.
The utility model has the advantages that:
1. the utility model provides a pair of device of monitoring cable corrosion and cable force adopts the integrated sensor structure of straight-through structure, and the cover is established on the steel strand wires or the steel wire of cable, with steel strand wires or steel wire as monitoring sensor's component, the cable force monitoring sensor after the installation is an independent unit with corrosion monitoring sensor, and synchronous power supply and data acquisition use a monitoring facilities, can possess the function of corruption, cable force monitoring simultaneously, and need not destroy the cable structure.
2. The utility model provides a pair of monitor cable corrodes and cable power's device, the sensor that can gather cable inductance parameter or resistance parameter is used in the corrosion monitoring, can adopt monitoring devices and cable fixed connection's structure data collection, and higher monitoring precision can be guaranteed when monitoring cable power and corrosion data simultaneously to this structure.
Drawings
FIG. 1 is a diagram: monitoring cable corrodes and cable power device's schematic structure.
FIG. 2 is a diagram of: install the monitoring cable of anchoring section and corrode and cable power device's schematic structure diagram.
FIG. 3 is a diagram of: install the monitoring cable corrosion and the structure schematic diagram of cable force device at the free section.
FIG. 4 is a diagram of: install the monitoring cable that has plug and socket connection structure in the anchor section and corrode and the schematic structure of cable power device.
FIG. 5 is a diagram: install the monitoring cable that has plug and socket connection structure at the free section and corrode and the schematic structure of cable force device.
FIG. 6 is a diagram of: clamp structure schematic diagram.
In the figure:
1. a cable force monitoring sensor; 10. steel strand wires; 12. a socket; 2. a corrosion monitoring sensor; 21. a connecting section; 22. a plug; 3. a data line; 4. an anchorage device; 41. an anchor head protective cover; 42. a compression plate; 5. a free section; 6. a sealing plate; 7. and (5) clamping a hoop.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 6 and the embodiments, and features in the following embodiments and examples may be combined with each other without conflict.
As shown in fig. 1 to 2, the present embodiment provides a device for monitoring corrosion and a cable force of a cable, the device includes a cable force monitoring sensor 1 and a corrosion monitoring sensor 2, the cable force monitoring sensor 1 and the corrosion monitoring sensor 2 are integrated structures arranged along an axial direction of the cable, and are all of a through structure; the cable force monitoring sensor 1 is a magnetic flux sensor, and the corrosion monitoring sensor 2 is a sensor capable of acquiring cable inductance parameters or resistance parameters; the stay cable is a steel strand stay cable; the monitoring device is sleeved on the outer ring of the steel strand 10, the steel strand 10 is used as a component of a monitoring sensor, the steel strand 10 is equivalent to a magnetic core, and a corresponding cable force value is obtained by monitoring the magnetic conductivity of the steel strand 10 at the installation position of the monitoring device and establishing a corresponding relation between a magnetic conductivity change value and the cable force value; in the scheme, a sensor capable of acquiring inhaul cable inductance parameters is applied to corrosion monitoring, the steel stranded wire 10 is used as an iron core, and the corrosion condition of the inhaul cable is reflected by measuring the inductance change condition of a coil;
the steel strand inhaul cable in the embodiment comprises an anchoring section 4 and a free section 5, wherein the anchoring section 4 comprises a compression plate 42 positioned on a wire dividing plate; one end of the corrosion monitoring sensor 2 is connected with the pressing plate 42 through the connecting section 21, specifically is in threaded connection, the other end of the corrosion monitoring sensor is fixedly connected with the cable force monitoring sensor 1, the installed cable force monitoring sensor 1 and the corrosion monitoring sensor 2 are independent units, synchronous power supply and data acquisition are achieved, a data line 3 of the corrosion monitoring sensor runs through an anchor hole and an anchor head protective cover 41 of the anchoring section and is connected with external measuring equipment, and the sensor is powered through an external power supply. All signals are drawn from the data line 3. The data line 3 includes power supply signals of the corrosion and cable force sensors (according to different types of cable force sensors, the two types of sensors of the power supply signals can share one set of power supply signals or not), cable force measurement signals, corrosion measurement signals and temperature measurement signals. A cable force data acquisition module, a corrosion data acquisition module and a main control machine are integrated in the measuring equipment. The main control computer communicates with the acquisition module to measure different signals, and the measurement equipment is powered by a conventional 24V direct current (but not limited to 24V) or 220V alternating current power supply.
Wherein, gather the measurement principle of cable inductance parameter's sensor and be: l is N2Determining parameters of the formula, measuring the inductance change of the coil △ L after the test piece is corroded, and obtaining the change value of the magnetic circuit sectional area △ S so as to determine the corrosion sectional area △ A of the test piece.
According to other embodiments or practical applications, the corrosion monitoring sensor 2 in the above embodiments may also be a sensor for monitoring a resistance parameter of the steel strand 10, and the principle of determining the guy corrosion through the resistance parameter is that R ═ ρ L/a, where R represents a resistance value, ρ represents the resistivity inherent to the material, L represents the length of the section, and a represents the cross-sectional area of the section, and the degree of metal loss can be determined by measuring the resistance, so that the resistance value R of the test piece is compared with the standard resistance of the test piece to obtain the resistance change value △ R, and the resistance change value is substituted into the above formula to obtain the corrosion cross-sectional area △ a of the test piece.
The above embodiment exemplarily shows that the cable force monitoring sensor 1 adopts a magnetic flux sensor, according to other embodiments or practical applications, the cable force monitoring sensor 1 in the above embodiment may also adopt an acceleration sensor, and the feed-through acceleration sensor is sleeved on an outer ring of the steel strand 10 to measure the cable force of the cable by vibration (acceleration) of the steel strand 10 at the installation position.
The above embodiment exemplarily shows a specific connection mode of the connecting section 21 of the corrosion monitoring sensor 2 and the pressing plate 42, and the thread connection mode in the above embodiment may also be replaced by mortise and tenon joint, screws, welding, gluing, and the like according to other embodiments or practical applications.
The above embodiment exemplarily shows a specific connection position of the corrosion monitoring sensor 2 and the cable, according to other embodiments or practical applications, as shown in fig. 3, the corrosion monitoring sensor 2 in the above embodiment may be further connected to a sealing plate 6 inside the cable free section 5, the connection mode may be a thread, a mortise and tenon joint, a screw, a welding, an adhesive, and the like, and the data line 3 may be connected to an external computer through a pre-embedded pipe penetrating through the free section 5.
The monitoring device in the above embodiment is exemplarily shown to be applied to a steel strand inhaul cable structure, and according to other embodiments or practical applications, the monitoring device in the above embodiment may also be applied to a steel strand inhaul cable structure, and the structure thereof is the same as the monitoring principle.
The above embodiment exemplarily shows that the corrosion monitoring sensor 2 is connected to the cable (that is, the connection segment 21 is located at one end of the corrosion monitoring sensor 2), according to other embodiments or practical applications, the above embodiment may also be connected to the cable through the cable force monitoring sensor 1, and the specific connection relationship is that the cable force monitoring sensor 1 is connected to the pressure plate 42 through the connection segment 21 at one end thereof, and the other end thereof is fixedly connected to the corrosion monitoring sensor 2, the installed cable force monitoring sensor 1 and the corrosion monitoring sensor 2 are an independent unit, power supply and data acquisition are synchronized, and all signals are led out by the data line 3. The data line 3 includes power supply signals of the corrosion and cable force sensors (according to different types of cable force sensors, the two types of sensors of the power supply signals can share one set of power supply signals or not), cable force measurement signals, corrosion measurement signals and temperature measurement signals.
The data wire 3 penetrates through an anchor hole of the anchoring section and the anchor head protective cover 41 and is connected with external measuring equipment; in the same way, the data line 3 can also be connected with the sealing plate 6 in the free section 5, and the embedded pipe of the free section 5 is penetrated by the data line and is connected with external measuring equipment.
The above embodiment exemplarily shows the connection relationship between the cable force monitoring sensor 1 and the corrosion monitoring sensor 2, and according to other embodiments or practical applications, the connection relationship can be replaced by a plug and a socket, a buckle, and the like, as shown in fig. 4 to 5, wherein the socket 12 is arranged at one end of the cable force monitoring sensor 1 adjacent to the corrosion monitoring sensor 2, and the plug 22 matched with the socket 12 is arranged at one end of the corrosion monitoring sensor 2 adjacent to the cable force monitoring sensor 1; wherein, socket 12 links to each other with the internal circuit of cable force monitoring sensor 1, and plug 22 links to each other with the internal circuit of corrosion monitoring sensor 2, realizes the connection of two sensors through matched with socket 12 and plug 22. The positions of the socket 12 and the plug 22 can be interchanged (the socket 12 is located at one end of the corrosion monitoring sensor 2, and the plug 2 is located at one end of the cable force monitoring sensor 1).
In another embodiment, as shown in fig. 6, on the basis of the above embodiment, the outer ring at the connection between the plug 22 and the socket 12 is provided with a clip 7 for improving the reliability of the connection between the two sensors, and the clip 7 is easy to assemble and disassemble.
In another embodiment, on the basis of the above embodiment, the monitoring device further comprises a temperature sensor, and the embodiment integrates the monitoring sensors of the three parameters without damaging the steel strand structure of the inhaul cable. In the scheme of monitoring the corrosion of the inhaul cable through the resistance value, the resistance value is related to the temperature, and the relationship between the resistance value and the calibrated resistance value at the current temperature can be calculated.
In another embodiment, in addition to the above embodiments, the feed-through structure of the cable force monitoring sensor 1 and the corrosion monitoring sensor 2 is a coaxial structure, which can improve the monitoring accuracy of the parameters.
The utility model provides a device for monitoring inhaul cable corrosion and cable force, which adopts the integrated sensor structure with a feed-through structure, is sleeved on a steel strand 10 or a steel wire of an inhaul cable, takes the steel strand 10 or the steel wire as the component of a monitoring device, and the installed cable force monitoring sensor 1 and the corrosion monitoring sensor 2 are independent units, synchronously supplies power and collects data, uses a monitoring device, can simultaneously have the functions of corrosion and cable force monitoring, and does not need to destroy the inhaul cable structure; the corrosion monitoring uses a sensor capable of collecting cable inductance parameters or resistance parameters, and can adopt a monitoring device and a cable fixed connection structure to collect data, and the structure can ensure higher monitoring precision when simultaneously monitoring cable force and corrosion data.
Claims (7)
1. A device for monitoring corrosion and cable force of a cable is characterized by comprising a cable force monitoring sensor, a corrosion monitoring sensor for acquiring inductance or resistance parameters of the cable, a data line and a power supply, wherein the cable force monitoring sensor and the corrosion monitoring sensor are of a straight-through structure, are sleeved on the cable and are connected at the end parts; the cable force monitoring sensor and the corrosion monitoring sensor transmit monitoring data through data lines and are connected with a power supply for supplying power.
2. The device for monitoring the corrosion and the cable force of the inhaul cable according to claim 1, wherein the cable force monitoring sensor is provided with a plug or a socket which is connected with a circuit thereof; the corrosion monitoring sensor is provided with a socket or a plug connected with a circuit thereof; wherein the plug and the socket are connected.
3. The device for monitoring the corrosion and the force of the stay cable according to claim 2, wherein the outer ring at the joint of the plug and the socket is provided with a clamp.
4. The device for monitoring the corrosion of the guy cable and the cable force according to claim 1, wherein the device is connected with the anchoring section or the free section of the guy cable.
5. The device for monitoring the corrosion and the cable force of the stay cable according to claim 4, wherein the device is connected with the stay cable in one of a thread way and a mortise and tenon way.
6. The device for monitoring cable corrosion and cable force according to claim 1, wherein the cable force monitoring sensor is one of a magnetic flux sensor and an acceleration sensor.
7. The device for monitoring the corrosion and the cable force of the inhaul cable according to claim 1, wherein the cable force monitoring sensor and the through structure of the corrosion monitoring sensor are coaxial structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921343698.1U CN210293518U (en) | 2019-08-19 | 2019-08-19 | Device for monitoring corrosion and cable force of inhaul cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921343698.1U CN210293518U (en) | 2019-08-19 | 2019-08-19 | Device for monitoring corrosion and cable force of inhaul cable |
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| Publication Number | Publication Date |
|---|---|
| CN210293518U true CN210293518U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921343698.1U Active CN210293518U (en) | 2019-08-19 | 2019-08-19 | Device for monitoring corrosion and cable force of inhaul cable |
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| CN (1) | CN210293518U (en) |
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- 2019-08-19 CN CN201921343698.1U patent/CN210293518U/en active Active
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