CN214011020U - Steel bridge stay cable corrosion current sensor - Google Patents
Steel bridge stay cable corrosion current sensor Download PDFInfo
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- CN214011020U CN214011020U CN202023219181.7U CN202023219181U CN214011020U CN 214011020 U CN214011020 U CN 214011020U CN 202023219181 U CN202023219181 U CN 202023219181U CN 214011020 U CN214011020 U CN 214011020U
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Abstract
The utility model discloses a steel bridge stay cable corrosion current sensor, wherein the front end of the inner shell is provided with internal threads which are fixedly connected to the anchorage device end of the bridge stay cable, and the outer shell of the main body is sleeved at the tail end of the inner shell of the main body through a positioning key; the corrosion current measuring element is annularly arranged in the annular concave surface of the middle part of the main body inner shell; the inner part of the main body inner shell is of a stepped hollow structure with the diameter decreasing from the head end to the tail end, and one side of the step is provided with a lug boss with a groove; the front end of the main body shell is provided with a notch, and the tail end of the main body shell is provided with a mounting groove; the main body outer shell is fixed with the main body inner shell through the mounting groove, a corrosion current measuring element is annularly arranged at the outer stepped position of the main body inner shell, and a temperature and humidity measuring element is mounted in a space formed by the corrosion current measuring element and a front end notch of the main body outer shell. The utility model discloses can gather bridge suspension cable in real time on line and be corroded data to cooperation measuring instrument realizes the monitoring of corrosion current, and simple structure is fit for using in batches greatly, and data are reliable, have market spreading value.
Description
Technical Field
The utility model relates to a metal corrosion measuring device specifically is a steel bridge oblique pull cable corrosion current sensor.
Background
The stay cable in the large steel bridge plays an important role in bearing and pulling the pier, the working condition states of stress, corrosion trend and the like of the stay cable need to be known when the bridge is in daily inspection, and the corrosion degree of the stay cable is difficult to judge by naked eyes of workers.
At present, the corrosion trend data of the stay cable of the steel bridge is still deficient, and a plurality of sensor schemes are not beneficial to online real-time monitoring application scenes, so that the measurement stability of a corrosion monitoring instrument is influenced. Because the corrosion current sensor has a severe working environment and the electrical characteristics of the sensor are ensured, the corrosion measuring element in the sensor is optimally designed to ensure that the measuring element can generate a corrosion current signal. At present, accurate and effective acquisition of corrosion current data of the stay cable of the steel bridge is not reported.
SUMMERY OF THE UTILITY MODEL
The utility model aims to can not feed back steel bridge stay cable in real time among the prior art by corrosion trend data, lead to the anticorrosive work that maintains of bridge not enough such as increase in a large number, the to-be-solved problem of the utility model is to provide a steel bridge stay cable corrosion current sensor, can online real-time supervision stay cable by corrosion trend data.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model provides a steel bridge stay cable corrosion current sensor, which comprises a main body inner shell, a main body outer shell and a corrosion current measuring element, wherein the front end of the inner shell of the main body inner shell is provided with internal threads which are fixedly connected to an anchorage device end of a bridge stay cable, and the main body outer shell is sleeved at the tail end of the inner shell of the main body through a positioning key; the corrosion current measuring element is annularly arranged in the annular concave surface of the middle part of the main body inner shell.
The inner part of the main body inner shell is of a stepped hollow structure with the diameter decreasing from the head end to the tail end, and one side of the step is provided with a lug boss with a groove; the front end of the main body shell is provided with a notch, and the tail end of the main body shell is provided with a mounting groove; the main body outer shell and the main body inner shell are fixed through a mounting groove, a corrosion current measuring element is annularly arranged at a step position outside the main body inner shell, and a temperature and humidity measuring element is mounted in a space formed by the corrosion current measuring element and a notch at the front end of the main body outer shell; the tail end in the main body inner shell is also provided with a positioning key.
The corrosion current measuring element is in a circular ring shape, the inner side of the circular ring is provided with a mounting notch for inserting the connecting pin, and the opposite side of the circular ring is provided with a matching notch for matching and positioning with the notch of the main body outer shell and the main body inner shell.
The corrosion current measuring elements are divided into two groups of 2N corrosion current measuring elements, the two groups of corrosion current measuring elements are arranged at intervals and are 180 degrees mutually, each group is positioned and electrically connected through a connecting pin, and the connecting pin is electrically connected with the signal transmission cable 5; adjacent corrosion current measurement elements are spaced apart by an electrically insulating material.
N is 2 to 6.
The utility model has the following beneficial effects and advantages:
1. the utility model is used for measure the stay cable of steel bridge and be corroded current data, can gather the bridge stay cable well on line in real time and be corroded data to the monitoring of corrosion current is realized to the cooperation measuring instrument. The assembly structure is simple, the assembly and disassembly are convenient, the device is suitable for large-batch use, the measurement data is reliable, and the market promotion value is achieved.
2. The utility model discloses can solve steel bridge inclined pull cable corrosion current sensor's measurement corrosion current data and humiture value carry out the trend contrast. The influence of temperature and humidity on the corrosion trend of the stay cable of the steel bridge can be effectively explained, and data support is provided for the selection of materials of the stay cable of the large-scale stay cable bridge in the north-south area.
3. The utility model relates to a life is 10 years, can select different corrosion current measuring element according to the bridge operating mode condition, guarantees that corrosion current data is stable, reliable.
Drawings
FIG. 1 is a schematic view of a corrosion current sensor for a steel bridge stay cable according to the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a sectional view of the inner shell structure of the main body of the present invention;
FIG. 4 is a sectional view of the structure of the main body case of the present invention;
FIG. 5 is a schematic structural diagram of a corrosion current measuring device according to the present invention;
fig. 6 is a view of the utility model discloses the assembly is bow.
Fig. 7 is a field installation diagram of the utility model.
In the figure, 1 is a main body inner shell, 101 is a step, 102 is a boss, 103 is a groove, 104 is a positioning key, 2 is a corrosion current measuring element, 201 is a mounting notch, 202 is a matching notch, 3 is a temperature and humidity measuring element, 4 is a main body outer shell, 401 is a notch, 402 is a mounting groove, 5 is a signal transmission cable, 6 is a stay cable steel strand, and 7 is a connecting pin.
Detailed Description
The invention will be further explained with reference to the drawings attached to the specification.
As shown in fig. 1-2, the utility model provides a steel bridge stay cable corrosion current sensor, which comprises a main body inner shell 1, a main body outer shell 4 and a corrosion current measuring element 2, wherein, the front end of the inner shell of the main body inner shell 1 is provided with internal threads which are fixedly connected to the anchorage end of the bridge stay cable, and the main body outer shell 4 is sleeved at the tail end of the main body inner shell 1 through a positioning key 104; the corrosion current measuring element 2 is annularly arranged in an annular concave surface of the middle part of the main body inner shell 1.
As shown in fig. 3, the inside of the main body inner shell 1 has a stepped hollow structure with a decreasing diameter from the head end to the tail end, and a boss 102 with a groove 103 is arranged on one side of a step 101; as shown in fig. 4, the front end of the main body case 4 is provided with a notch 401, and the end is provided with a mounting groove 402; main part shell 4 is fixed through mounting groove 402 with main part inner shell 1, and corrosion current measuring element 2 is established to main part inner shell 1 outside ladder position ring, and installation humiture measuring element 3 in the space that corrosion current measuring element 2 and main part shell 4 front end notch 401 formed. The inner end of the main body inner shell 1 is also provided with a positioning key 104.
As shown in fig. 5, the corrosion current measuring element 2 is annular, and the inner side of the annular is provided with a mounting notch 201 for inserting the connecting pin 7, and the opposite side is provided with a matching notch 202 for matching and positioning with a notch 401 of the main body outer shell 4 and the main body inner shell 1.
The corrosion current measuring elements 2 are divided into two groups of 2N, the two groups of corrosion current measuring elements 2 are arranged at intervals and are 180 degrees apart from each other (namely, the adjacent corrosion current measuring elements 2 are different groups), each group is positioned and electrically connected through a connecting pin 7, and the connecting pin 7 is electrically connected with the signal transmission cable 5; adjacent corrosion current measurement elements are spaced apart by an electrically insulating material.
The corrosion current measuring element 2 is made of two materials, one is made of red copper, and the other is made of 20# steel. N is 2 ~ 6, and each group includes N corrosion current measuring elements 2 that the material is the same, and two sets of material is different. The interval between adjacent corrosion current measuring elements is 0.1-0.5 mm (in the embodiment, 0.3mm of plastic film is used for the interval), and an alternating distribution structure is formed.
The utility model discloses in, 1 front end of main part inner shell is equipped with the screw thread for fixed connection is equipped with the boss of taking the pinhole to the ground tackle end of bridge suspension cable, middle, and the end is equipped with the navigation key, is used for fixing a position the installation of main part shell 4.
The measuring elements 2 are sleeved in bosses which are arranged on an inner shell of the sensor main body and provided with pin holes, a group of measuring elements made of the same material are connected in series by adopting a connecting pin 7, and epoxy resin is filled in a hollow part for sealing, so that the electrical insulation among the groups is kept. The connecting pin 7 is laser-welded to the signal transmission cable 5. The temperature and humidity measuring element 3 is inserted into a U-shaped open slot in the inner shell 1 of the sensor body, and the tail end of the temperature and humidity measuring element is welded with the signal transmission cable 5 by laser. The outer shell 4 of the sensor body is aligned with the positioning key 104 of the inner shell 1 of the sensor body, penetrates through the signal transmission cable 5, penetrates to the end face of the measuring element 2, and is sealed by pouring epoxy resin into an annular notch formed at the bottom. The utility model discloses the bow after the assembly is accomplished is shown in figure 6 to the view.
As shown in fig. 7, when the bridge is constructed, the stay cable steel strand 7 is threaded through the front end screw thread of the whole sensor, the screw thread is fixed at the bottom anchorage of the bridge, and the signal transmission cable 5 is connected to the interface of the stay cable corrosion monitoring instrument corresponding to the bridge, so that the measurement of the corrosion data can be started.
Claims (5)
1. The utility model provides a steel bridge stayed-cable corrosion current sensor which characterized in that: the device comprises a main body inner shell, a main body outer shell and a corrosion current measuring element, wherein the front end of the main body inner shell is provided with internal threads and is fixedly connected to an anchorage device end of a bridge stay cable, and the main body outer shell is sleeved at the tail end of the main body inner shell through a positioning key; the corrosion current measuring element is annularly arranged in the annular concave surface of the middle part of the main body inner shell.
2. The steel bridge stay cable corrosion current sensor according to claim 1, wherein: the inner part of the main body inner shell is of a stepped hollow structure with the diameter decreasing from the head end to the tail end, and one side of the step is provided with a lug boss with a groove; the front end of the main body shell is provided with a notch, and the tail end of the main body shell is provided with a mounting groove; the main body outer shell and the main body inner shell are fixed through a mounting groove, a corrosion current measuring element is annularly arranged at a step position outside the main body inner shell, and a temperature and humidity measuring element is mounted in a space formed by the corrosion current measuring element and a notch at the front end of the main body outer shell; the tail end in the main body inner shell is also provided with a positioning key.
3. The steel bridge stay cable corrosion current sensor according to claim 1, wherein: the corrosion current measuring element is in a circular ring shape, the inner side of the circular ring is provided with a mounting notch for inserting the connecting pin, and the opposite side of the circular ring is provided with a matching notch for matching and positioning with the notch of the main body outer shell and the main body inner shell.
4. The steel bridge stay cable corrosion current sensor according to claim 1, wherein: the corrosion current measuring elements are divided into two groups of 2N corrosion current measuring elements, the two groups of corrosion current measuring elements are arranged at intervals and are 180 degrees mutually, each group is positioned and electrically connected through a connecting pin, and the connecting pin is electrically connected with the signal transmission cable 5; adjacent corrosion current measurement elements are spaced apart by an electrically insulating material.
5. The steel bridge stay cable corrosion current sensor according to claim 4, wherein: n is 2 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023219181.7U CN214011020U (en) | 2020-12-28 | 2020-12-28 | Steel bridge stay cable corrosion current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023219181.7U CN214011020U (en) | 2020-12-28 | 2020-12-28 | Steel bridge stay cable corrosion current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214011020U true CN214011020U (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023219181.7U Active CN214011020U (en) | 2020-12-28 | 2020-12-28 | Steel bridge stay cable corrosion current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214011020U (en) |
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2020
- 2020-12-28 CN CN202023219181.7U patent/CN214011020U/en active Active
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