CN216082573U - High-temperature-resistant test system for bridge cable body - Google Patents
High-temperature-resistant test system for bridge cable body Download PDFInfo
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- CN216082573U CN216082573U CN202122210889.4U CN202122210889U CN216082573U CN 216082573 U CN216082573 U CN 216082573U CN 202122210889 U CN202122210889 U CN 202122210889U CN 216082573 U CN216082573 U CN 216082573U
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229930183489 erectone Natural products 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model provides a high temperature test system of bridge cable body, its includes the high temperature furnace, and support, thermocouple, cushion, drive car, one are used for controlling the temperature rise control module of high temperature furnace, and one with thermocouple electric connection's data processing module. The bridge cable body is erected on the support and the cushion block so that part of the bridge cable body is contained in the high-temperature furnace. And the temperature rise control module controls the high-temperature furnace to rise the temperature according to a formula. The data processing module comprises a threshold setting unit, a data comparing unit, a difference comparing unit and a high-temperature resistance output unit. And the high-temperature resistance output unit is used for outputting a conclusion that the bridge cable body is qualified in high-temperature resistance when the difference between any two difference values is smaller than the threshold value. The high-temperature resistance test system and the test method can quickly and conveniently obtain whether the high-temperature resistance of the bridge cable body is qualified.
Description
Technical Field
The utility model relates to the technical field of bridge cable detection, in particular to a high-temperature-resistant test system for a bridge cable body.
Background
With the increasing of bridge and building fires, people pay more and more attention to the performance change of the guy cable or the main cable under the action of the fire and the harm caused by the performance change. For the guy cables used in bridges and building structures, fire disasters are more threatened than disasters such as wind, earthquake and the like. The threat is mainly reflected in the influence of high temperature on the structure, namely, the high temperature causes the structure to generate temperature internal force and the reduction of the strength and the rigidity of the mechanism material, so that the temperature rise condition of the stay cable or the main cable strand during fire disaster is accurately detected, and the method is the main direction of the research on the fire resistance of the stay cable or the main cable. The combustion test is one of the most effective means for determining the high-temperature resistance of the stay cable or the main cable. But because the cable is usually bulky and heavy, it is inconvenient for people to move. Meanwhile, how to quickly obtain required data for the cable body to be detected is also important for the convenience of the detection system.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a high temperature resistance test system for a bridge cable body, so as to solve the above technical problems.
The utility model provides a high temperature test system of bridge cable body, its includes a high temperature furnace, a setting is in support in the high temperature furnace, at least one setting is in the inside thermocouple of bridge cable body, a setting is in cushion outside the high temperature furnace, a drive car that is used for erectting support and cushion, a temperature rise control module that is used for controlling the high temperature furnace, and one with thermocouple electric connection's data processing module, the bridge cable body erects on support and the cushion so that the part of bridge cable body accept in the high temperature furnace, the drive car drives support and cushion reciprocate in the high temperature furnace.
Further, the bracket is made of stainless steel.
Further, the thermocouple is K type or S type.
Further, four thermocouples are arranged in the circumferential direction of the cross section of the bridge cable body, and are evenly distributed around the central axis of the bridge cable body.
Further, the bridge cable body comprises a plurality of steel wires and a fireproof protective layer coated outside the steel wires, and the thermocouple is arranged on the surface of the steel wires and located between the fireproof protective layer and the steel wires.
Further, the bridge cable body is arranged at the axial center of the high-temperature furnace body.
Furthermore, the high-temperature-resistant test system for the bridge cable body further comprises a data acquisition module, and the data acquisition module is used for acquiring the temperature rise data of the bridge cable body through the thermocouple.
Compared with the prior art, the high-temperature resistance test system for the bridge cable body provided by the utility model has the advantages that the bridge cable body is firstly placed on the driving vehicle through the crane, erected on the support and the cushion block and then pushed into the high-temperature furnace, and the support and the cushion block are used for making the bridge cable body overhead so as to avoid the influence on the accuracy of the acquired data due to the contact between the bridge cable body and a high-temperature furnace body or the contact between the bridge cable body and the ground, so that the detection can be rapidly carried out, and meanwhile, the use of manpower is reduced. In addition, the thermocouple is arranged on the bridge cable body, the temperature rise process is controlled through the temperature rise control module, and the data processing module is used for processing data to obtain the conclusion whether the bridge cable body is qualified or not, so that the whole detection is time-saving, labor-saving and convenient.
Drawings
Fig. 1 is a schematic structural principle diagram of a high temperature resistance test system of a bridge cable body provided by the utility model.
Fig. 2 is a schematic cross-sectional structure view of a bridge cable body for performing a high temperature resistance test provided by the utility model.
Detailed Description
Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the utility model is not intended to limit the scope of the utility model.
As shown in fig. 1 and fig. 2, the high temperature resistance test system for a bridge cable body provided by the utility model is a schematic block diagram. The high-temperature resistance test system of the bridge cable body is used for detecting the high-temperature resistance of one bridge cable body 10. The bridge cable 10 may be a cable or a suspension cable, and includes a plurality of steel wires 11, a fire-resistant protection layer 12 covering the outer sides of the steel wires 11, and at least one thermocouple 13 disposed between the steel wires 11 and the fire-resistant protection layer 12. The steel wire 11 and the fire-resistant protective layer 13 are conventional in the art and will not be described in detail herein. The number of the thermocouples 13 can be set according to the diameter of the bridge cable body. In the present embodiment, four thermocouples 13 are provided in the bridge cable body. The four thermocouples 13 are arranged along the circumferential direction of the cross section of the bridge cable body, and the four thermocouples 13 are evenly distributed around the central axis of the bridge cable body, so that the thermal parameters around the bridge cable body 10 can be quickly obtained. The thermocouple 13 is per se prior art, being an electronic component that can directly measure the temperature and convert the temperature signal into a thermal electromotive force signal.
The high-temperature resistance test system of the bridge cable body comprises a high-temperature furnace 20, a support 30 arranged in the high-temperature furnace 20, a cushion block 40 arranged outside the high-temperature furnace 20, a temperature rise control module 50 used for controlling the high-temperature furnace 20, a data acquisition module 60 electrically connected with the thermocouple 13, a data processing module 70 used for processing relevant data, and a driving vehicle 80 used for erecting the support 30 and the cushion block 40. It is contemplated that the system for testing the bridge cable for high temperature resistance may further include other functional modules, such as assembly modules, electrical connection modules, etc., which are well known to those skilled in the art and will not be described in detail herein. The bridge cable 10 is prior art and comprises a plurality of steel wires arranged in an orderly manner to form a rope-like structure, and the specific structure will not be described in detail.
The high temperature furnace 20 is a prior art, and is often used in various industrial and mining enterprises, laboratories of scientific research institutions, laboratories for heating, heat treatment and other occasions. The specification of the high temperature furnace 10 includes: 1000 ℃, 1200 ℃, 1300 ℃ and the maximum temperature can reach 1600 ℃, and the electric furnace with special specification can be customized according to the requirement of a user. In this embodiment, the high temperature of the high temperature furnace 10 is required to reach 1500 ℃.
The bracket 30 may be made of stainless steel, and its shape and structure may be set according to actual requirements, and is used to erect one end of the bridge cable 10. The height of the bracket 30 should be such that the bridge cable 10 is located at the axial center of the high temperature furnace 20, so that the bridge cable 10 is sufficiently heated.
The pad 40 is disposed outside the high temperature furnace 20, i.e., is disposed in the air, and has no requirement for shape and structure as long as the height thereof is such that the bridge cable 10 is located at the axial center of the high temperature furnace 20.
The temperature rise control module 50 is used for controlling the heating device of the high temperature furnace 20, so that the heating device can realize a certain temperature rise curve according to the requirement of a user. In this embodiment, the refractory test of the bridge cable 10 requires a short early heating time, i.e. a short temperature rise time, and after a certain time, the temperature of the high temperature furnace 20 is kept constant within a certain range, preferably, after the certain time, the temperature of the high temperature furnace 20 is kept constant at a fixed value, so as to test the refractory performance of the bridge cable 10. Therefore, the temperature rise control module 50 controls the high temperature furnace to rise the temperature according to the following formula:
Tg-Tg0＝1080×(1-0.325e-t/6-0.675e-2.5t)
in the formula:
t is the duration of temperature rise;
Tg-the average temperature of the hot flue gas after the temperature has been raised by t;
Tg0-temperature in the high temperature furnace before temperature rise.
In the above formula, T is expressed in minutes, TgIn degrees Celsius, Tg0Is also in degrees celsius.
When the high temperature furnace 20 controls the temperature therein to be raised according to the above formula, the period of the previous temperature rise thereof will be short and then will be maintained at a constant value. It is of course conceivable that the constant value is not an absolute constant value, but within a slight variation, which is acceptable and therefore can be regarded as a constant value. When the bridge cable body 10 is tested in a constant high-temperature environment, the fire resistance can be embodied most, so that the temperature test and the fire resistance test of the bridge cable body 10 are facilitated. Because in reality, when a fire occurs or the bridge cable 10 is in a high temperature environment, the temperature of the fire is changed, and if the bridge cable 10 can reach an acceptable tolerance level under a constant high temperature, the fire resistance of the bridge cable 10 is acceptable. Of course, it is contemplated that other temperature rise control formulas and curves may be used depending on the purpose of the test and will not be described herein.
The data acquisition module 60 is electrically connected to the four thermocouples 13 and is configured to acquire data returned by the thermocouples 13. The data acquisition module 60 may be a data acquisition device, which is a prior art and will not be described herein. The data acquisition module is configured to acquire and record the temperature returned by the thermocouple 13 at time t, and send the temperature to the data processing module 70 for processing.
The data processing module 70 is electrically connected to the data acquisition module 60 and is configured to process the acquired data. The data processing module 70 comprises a threshold setting unit 71, a data comparing unit 72, aA difference comparison unit 73, and a high temperature resistance output unit 74. It is contemplated that the data processing module 70 is implemented in a computer system, which is implemented by programming. As for the programmed program itself, as long as those skilled in the art can understand the technical solution created by the present invention, the programmed program can be programmed by using the existing computer language, and will not be described herein again. The threshold setting unit 71 is configured to preset a threshold when the fire resistance test of the bridge cable 10 is qualified. The threshold value may be set to different values according to different bridge cables 10. The threshold is typically a small positive value, not 0. Since if 0, the requirement for the pass of the fire resistance test is too severe. Therefore, the greater the threshold, the less stringent the fire test will be. The data comparing unit 72 is configured to compare the temperature returned by the thermocouple 13 with T at the same timegA comparison is made to obtain a difference. T isgIs provided by a temperature rise control module 50 at a certain time TgIs a known value that has been recorded by the temperature rise control module 50. At the same time, at a certain time t, the temperature returned by the thermocouple 13 may also be obtained by the data acquisition module 60, so that the difference may be obtained by the data comparison module 72, and the difference is recorded in the computer system, such as the RAM. The difference comparing unit 73 is configured to compare any two of the differences acquired by the data comparing unit 72 for difference. The difference comparison unit 73 is a mathematical model that compares any two differences to make a difference, and then outputs the difference, which may be 0 or a small value. The high temperature resistance output unit 74 is configured to compare the difference between any two difference values with the threshold value set by the threshold value setting unit 71 to determine whether the fire resistance test of the bridge cable 10 is qualified. When the difference between any two difference values is smaller than the threshold value, it indicates that the fire resistance test of the bridge cable 10 is qualified, otherwise it is not qualified, that is, when the difference between any two difference values is smaller than the threshold value, the high temperature resistance output unit 74 outputs a conclusion that the bridge cable 10 is qualified in high temperature resistance.
When the difference between any two difference values is smaller than the threshold value, it indicates that the temperature rise curve of the bridge cable body 10 in the high-temperature furnace 20 is substantially similar to that of the high-temperature furnace 20, which indicates that no temperature jump occurs in the bridge cable body 10, and it can indicate that the fire-resistant protective layer 12 or other materials are not damaged or not on fire, thereby obtaining the conclusion that the bridge cable body 10 is qualified in high-temperature resistance.
The driving cart 80 is used for erecting the support 30 and the cushion block 40 so as to be convenient to get in and out of the high temperature furnace 20 quickly, conveniently and laborsavingly, and therefore the driving cart 80 should be able to withstand high temperature. The driving vehicle 80 may be a pulley type, that is, a roller is disposed under the vehicle bottom, but it is prior art and will not be described herein.
Compared with the prior art, the high-temperature resistance test system for the bridge cable body provided by the utility model has the advantages that the bridge cable body 10 is firstly placed on the driving vehicle 80 through the crane, is erected on the bracket 30 and the cushion block 40, and is then pushed into the high-temperature furnace 20, and the bracket 30 and the cushion block 40 are used for being erected so as to avoid the influence on the accuracy of the acquired data caused by the contact between the bridge cable body 10 and the high-temperature furnace 20 or the contact between the bridge cable body and the ground, so that the detection can be rapidly carried out, and the use of manpower is reduced. In addition, the thermocouple 13 is arranged on the bridge cable body, the temperature rise process is controlled by the temperature rise control module 50, and the data processing module 70 is used for processing the data to obtain the conclusion whether the bridge cable body is qualified or not, so that the whole detection is time-saving, labor-saving and convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.
Claims (7)
1. The utility model provides a high temperature test system of bridge cable body which characterized in that: the high-temperature test system of the bridge cable body comprises a high-temperature furnace, a support arranged in the high-temperature furnace, at least one thermocouple arranged in the bridge cable body, a cushion block arranged outside the high-temperature furnace, a driving vehicle used for erecting the support and the cushion block, a temperature rise control module used for controlling the high-temperature furnace, and a data processing module electrically connected with the thermocouple, wherein the bridge cable body is erected on the support and the cushion block so that part of the bridge cable body is contained in the high-temperature furnace, and the driving vehicle drives the support and the cushion block to reciprocate in the high-temperature furnace.
2. The high temperature resistance test system of bridge cable of claim 1, wherein: the bracket is made of stainless steel.
3. The high temperature resistance test system of bridge cable of claim 1, wherein: the thermocouple is K type or S type.
4. The high temperature resistance test system of bridge cable of claim 1, wherein: the thermocouples are provided with four thermocouples along the circumferential direction of the cross section of the bridge cable body, and the four thermocouples are evenly distributed around the central axis of the bridge cable body.
5. The high temperature resistance test system of bridge cable of claim 1, wherein: the bridge cable body comprises a plurality of steel wires and a fireproof protective layer coated outside the steel wires, and the thermocouple is arranged on the surface of the steel wires and located between the fireproof protective layer and the steel wires.
6. The high temperature resistance test system of bridge cable of claim 1, wherein: the bridge cable body is arranged at the axial center of the high-temperature furnace body.
7. The high temperature resistance test system of bridge cable of claim 1, wherein: the high-temperature-resistant test system of the bridge cable body further comprises a data acquisition module, and the data acquisition module is used for acquiring the temperature rise data of the bridge cable body through the thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122210889.4U CN216082573U (en) | 2021-09-13 | 2021-09-13 | High-temperature-resistant test system for bridge cable body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122210889.4U CN216082573U (en) | 2021-09-13 | 2021-09-13 | High-temperature-resistant test system for bridge cable body |
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| Publication Number | Publication Date |
|---|---|
| CN216082573U true CN216082573U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122210889.4U Active CN216082573U (en) | 2021-09-13 | 2021-09-13 | High-temperature-resistant test system for bridge cable body |
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| CN (1) | CN216082573U (en) |
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2021
- 2021-09-13 CN CN202122210889.4U patent/CN216082573U/en active Active
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