CN220270982U - Constant temperature test box device for loosening performance of steel strand - Google Patents
Constant temperature test box device for loosening performance of steel strand Download PDFInfo
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- CN220270982U CN220270982U CN202321848066.7U CN202321848066U CN220270982U CN 220270982 U CN220270982 U CN 220270982U CN 202321848066 U CN202321848066 U CN 202321848066U CN 220270982 U CN220270982 U CN 220270982U
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- 238000012360 testing method Methods 0.000 title claims abstract description 84
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims description 30
- 239000010935 stainless steel Substances 0.000 claims description 30
- 229920000742 Cotton Polymers 0.000 claims description 13
- 239000010410 layer Substances 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 10
- 239000011229 interlayer Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract description 6
- 238000011056 performance test Methods 0.000 abstract 1
- 239000011513 prestressed concrete Substances 0.000 description 6
- 238000010998 test method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model relates to a constant temperature test box device for the relaxation performance of steel strands, which relates to the technical field of the relaxation constant temperature test of the steel strands and comprises a temperature control box and a controller, wherein sample holes for penetrating test steel strands are formed in two side plates of the temperature control box, a heating plate is arranged on a bottom plate of the temperature control box, circulating fans are arranged on two sides of the heating plate, a temperature sensor and a lighting device are also arranged in the temperature control box, a box door is arranged on the front surface of the temperature control box, the controller is connected with the temperature sensor, the heating plate, the circulating fans and the lighting device, the test temperature can be accurately controlled through the heating plate and the temperature sensor, the temperature in the temperature control box can be heated to 100 ℃ from room temperature, the temperature regulation range is large, and the relaxation performance test requirements of the steel strands under different temperatures can be met; the whole set of device is convenient to carry and assemble and disassemble, low in cost, high in efficiency, reliable and stable in detection quality, and suitable for various stress relaxation testing machines in the market.
Description
Technical Field
The utility model relates to the technical field of constant temperature tests of the relaxation performance of steel strands, in particular to a constant temperature test box device for the relaxation performance of steel strands.
Background
The constant temperature test of the relaxation performance of the steel strand is to test the relaxation resistance of the steel strand under a specific high-temperature environment condition, and in the process of implementing the detection of the stress relaxation performance of the steel strand according to the steel test method for prestressed concrete GB/T21839-2019, test data are abnormal due to unstable temperature of the high-temperature environment, and the linear relation of the data is poor, so that the detection result is inaccurate. Some relaxation testing machine equipment on the market is not provided with temperature control equipment, but is achieved by controlling the ambient temperature of a laboratory, so that instability of temperature control is caused, and uncertainty in actual operation is caused. Although some relaxation testing machine equipment is provided with a heating device, the test temperature cannot be accurately controlled, so that the error of a test result is large, the test temperature adjustment range is small, the structure of the relaxation testing machine equipment is complex, and the disassembly and assembly are troublesome.
Disclosure of Invention
The utility model aims to solve the technical problems that: the constant temperature test box device for the relaxation performance of the steel strand is provided, so that the problems that the test temperature cannot be accurately controlled and the test temperature adjusting range is small in the prior art are solved.
The technical scheme for solving the technical problems is as follows: the utility model provides a steel strand wires relaxation performance constant temperature test box device, includes temperature control box and controller, it is used for passing the sample hole of experimental steel strand wires to open on the both sides board of temperature control box, installs the board that generates heat on the bottom plate of temperature control box, it is provided with circulating fan to generate heat the board both sides, installs temperature sensor and lighting device in the temperature control box, the temperature control box openly is provided with the chamber door, the controller is connected with temperature sensor, generates heat board, circulating fan and lighting device.
The utility model further adopts the technical scheme that: the number of the temperature sensors is 2-4, and the temperature sensors are uniformly arranged below a top plate of the temperature control box or are adsorbed on the test steel strand through a magnetic seat.
The utility model further adopts the technical scheme that: the box body material of the temperature control box is double-layer stainless steel plates, and heat preservation cotton is filled in the middle interlayer of the double-layer stainless steel plates.
The utility model further adopts the technical scheme that: the box door is provided with a visual window which is made of hollow glass.
The utility model further adopts the technical scheme that: the diameter of the sample hole is 18-22 mm.
The utility model further adopts the technical scheme that: and a stainless steel sleeve with the diameter of 18-22 mm is welded at the sample hole.
The utility model further adopts the technical scheme that: and heat preservation cotton is filled between the stainless steel sleeve and the test steel strand.
By adopting the structure, compared with the prior art, the utility model has the following beneficial effects:
1. accurate temperature control and wide-range temperature regulation
The controller is connected with the heating plate and the temperature sensor, so that the test temperature can be accurately controlled, the test temperature can be set at will according to the test procedure requirement, and the temperature in the temperature control box can be controlled from room temperature to 100 ℃ after the temperature control box is started to be heated through the controller, the temperature adjustment range is large, and the test requirements of the relaxation performance of the steel strand at different temperatures can be met; the number of the temperature sensors is 2-4, and the temperature sensors are uniformly arranged below the top plate of the temperature control box or adsorbed on the test steel strand, so that the test temperature can be accurately controlled, and the temperature accuracy can reach 0.1 ℃.
2. Reliable and stable detection quality
The box body of the temperature control box is made of double-layer stainless steel plates, the temperature control box is not easy to damage, heat preservation cotton is filled in the middle interlayer of the double-layer stainless steel plates, and heat preservation cotton is filled between the test steel stranded wires and the stainless steel sleeve, so that the temperature in the temperature control box is kept constant; and the circulating fans are arranged on two sides of the heating plate, air in the temperature control box is circulated by the circulating fans, the test steel strands are heated more uniformly, the phenomenon that the test steel strands are heated locally or unevenly is prevented, and the detection quality is reliable and stable.
3. Safety in operation
The box body of the temperature control box is made of double-layer stainless steel plates, the middle interlayer of the double-layer stainless steel plates is filled with heat insulation cotton, the outside of the temperature control box is not heated, test personnel cannot be scalded, and the device is safe and reliable to operate.
4. Steel strand wires and testing machine suitable for different specifications
The two side plates of the temperature control box are provided with the sample holes for penetrating through the test steel stranded wires, the diameters of the sample holes are 18-22 mm, stainless steel sleeves with the diameters of 18-22 mm are welded at the sample holes, the test steel stranded wires with the coating can be prevented from being damaged by burrs when the test steel stranded wires penetrate through the holes for installation, and when the test steel stranded wires and the stainless steel sleeves have gaps, the test steel stranded wires can be filled by using heat-insulating cotton, and the diameters of the sample holes are suitable for steel stranded wires with diameters of various specifications in the market; the whole set of device can be independently extracted and used, has no fixed bolt with a testing machine, has smaller body shape, and is suitable for various stress relaxation testing machines in the market, thus being suitable for testing steel strands and testing machines with different specifications.
5. High detection efficiency
The heating plate, the temperature sensor, the lighting device and the circulating fan are fixed in the temperature control box and are externally connected with the controller, and the whole set of device can be independently extracted for use, so that the temperature control box is directly placed on a testing machine without fixing bolts with the testing machine when the temperature control box is used, and the temperature control box is quickly and conveniently placed on different testing machines without excessive disassembly and assembly.
6. Low cost
The utility model has small volume, can be directly used on a mature testing machine, does not need secondary processing or reconstruction, only needs to input the stainless steel box body material, the heat insulation material and the controller once, is cheaper in the market, can be directly used after the result comes out, reduces the energy consumption required by adjusting the temperature in the space when the equipment operates compared with the prior indoor heater, saves more electricity and reduces the production cost.
Drawings
FIG. 1 is a schematic perspective view of a constant temperature test box device for loosening performance of steel strands according to the first embodiment;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a schematic perspective view of a constant temperature test chamber device for loosening performance of steel strands according to the second embodiment;
in the figure:
1-temperature control box, 2-controller, 3-test steel strand, 4-sample hole, 5-temperature sensor, 6-heating plate, 7-circulating fan, 8-chamber door, 9-lighting device, 10-visual window, 11-stainless steel sleeve.
Detailed Description
Example 1
As shown in fig. 1-3, a constant temperature test box device with the relaxation performance of steel strands comprises a temperature control box 1 and a controller 2, wherein the box body material of the temperature control box 1 is a double-layer stainless steel plate, a middle interlayer of the double-layer stainless steel plate is filled with heat preservation cotton, sample holes 4 used for penetrating through the test steel strands 3 are formed in two side plates of the temperature control box 1, the diameter of each sample hole 4 is 18-22 mm, a stainless steel sleeve 11 with the diameter of 18-22 mm is welded at each sample hole 4, the stainless steel sleeve has the function of avoiding samples from being scratched, 2-4 temperature sensors 5 are uniformly arranged under a top plate of the temperature control box 1, the number of the temperature sensors 5 can be 2, 3 and 4, a heating plate 6 is arranged on a bottom plate of the temperature control box 1, circulating fans 7 are arranged on two sides of the heating plate 6, the circulating fans 7 can keep the temperature in the temperature control box uniformly and constant, the temperature can also dissipate heat, the temperature control box 1 can be cooled to the room temperature under the premise of not being dismounted and being mounted in the normal temperature condition for detection, the temperature control box 1 can be cooled down to the room temperature in the room temperature control box 1, the temperature control box is provided with a window 10, a glass window 9 is provided with a lighting device, the temperature control box door 10 is provided with a window, the temperature control device is provided with a lighting device, and a lighting device is provided with a window 9, and a lighting device is arranged in the temperature control box, and is provided with the temperature control box 6, and is provided with a lighting device, and is provided with a box 9; the controller 2 is a relay type, can set the temperature according to the test requirement, the controller controls the heating plate to supply and cut off power, and can control the switch of the lighting device and the circulating fan at the same time;
the diameter of the preferable sample hole 4 is 20mm, the diameter of the stainless steel sleeve 11 is 20mm correspondingly, the diameter is 20mm, the diameter is suitable for steel strands with various specifications and diameters in the market, an extensometer and a penetrating test steel strand are arranged in the sample hole 4, and when the test steel strand is subjected to stress relaxation tests at different temperatures, the extensometer can store data and a time relation curve so as to trace the source, and heat preservation cotton is filled between the stainless steel sleeve 11 and the test steel strand 3, so that the temperature in a temperature control box is kept constant, and the phenomenon that the test steel strand is locally heated or heated unevenly is prevented.
Example two
As shown in fig. 4, unlike the first embodiment, the temperature sensor 5 of the present embodiment is adsorbed on the test steel strand 3 by a magnetic seat, and has the following specific structure:
the temperature control box comprises a temperature control box 1 and a controller 2, wherein the box body of the temperature control box 1 is made of double-layer stainless steel plates, a middle interlayer of the double-layer stainless steel plates is filled with heat preservation cotton, two side plates of the temperature control box 1 are provided with sample holes 4 used for penetrating through test steel stranded wires 3, the diameters of the sample holes 4 are 18-22 mm, stainless steel sleeves 11 with the diameters of 18-22 mm are welded at the sample holes 4, the stainless steel sleeves are used for preventing samples from being scratched, temperature sensors 5 are adsorbed on the test steel stranded wires 3 through magnetic seats, the number of the temperature sensors 5 can be 2, 3 and 4, heating plates 6 are arranged on a bottom plate of the temperature control box 1, two sides of the heating plates 6 are provided with circulating fans 7, the circulating fans 7 can keep the temperature in the temperature control box uniform and constant, heat can be dissipated, the temperature in the temperature control box 1 can be reduced to the room temperature under the premise that the sample holes 4 are not detached and are arranged, a window 8 is arranged on the front of the temperature control box 1, the temperature control box is provided with a door 8, the temperature sensor is provided with a window 10, and a lighting device 9 is arranged in the temperature control box, and a lighting device is connected with the temperature control box 6, and a lighting device 9 is arranged in the test box, and is provided with the lighting device 9; the controller 2 is a relay type, can set the temperature according to the test requirement, the controller controls the heating plate to supply and cut off power, and can control the switch of the lighting device and the circulating fan at the same time;
the diameter of the preferable sample hole 4 is 20mm, the diameter of the stainless steel sleeve 11 is 20mm correspondingly, the diameter is 20mm, the diameter is suitable for steel strands with various specifications and diameters in the market, an extensometer and a penetrating test steel strand are arranged in the sample hole 4, and when the test steel strand is subjected to stress relaxation tests at different temperatures, the extensometer can store data and a time relation curve so as to trace the source, and heat preservation cotton is filled between the stainless steel sleeve 11 and the test steel strand 3, so that the temperature in a temperature control box is kept constant, and the phenomenon that the test steel strand is locally heated or heated unevenly is prevented.
The working process of the utility model comprises the following steps:
1. sequentially fixing a heating plate, a temperature sensor, a lighting device and a circulating fan in a temperature control box with a sample hole, and connecting the temperature control box with a controller;
2. placing the steel strand relaxation performance constant-temperature test box device on a testing machine, placing stably, enabling a test steel strand to pass through sample holes at two ends of the device, installing according to the latest standard of prestressed concrete steel strand GB/T5224-2014 and prestressed concrete steel test method GB/T21839-2019 of a prestressed concrete relaxation test, and sealing a gap between the test steel strand and a stainless steel sleeve by using heat-insulating cotton;
3. setting a specified temperature, starting a heating switch to heat, then starting a circulating fan to circulate heat, closing a box door of the device, and keeping the box door at a constant temperature to the specified temperature;
4. and performing a pressurization test according to related specification requirements of GB/T5224-2014 of prestressed concrete steel strands, GB/T21839-2019 of steel test method for prestressed concrete and the like, and thus realizing a stress relaxation test of the steel strands in a constant temperature state.
Claims (7)
1. The utility model provides a steel strand wires relaxation performance constant temperature test box device, includes accuse temperature case (1) and controller (2), its characterized in that: sample hole (4) that are used for passing experimental steel strand wires (3) are opened on the both sides board of accuse temperature case (1), install heating plate (6) on the bottom plate of accuse temperature case (1), heating plate (6) both sides are provided with circulation fan (7), install temperature sensor (5) and lighting device (9) in accuse temperature case (1), accuse temperature case (1) openly is provided with chamber door (8), controller (2) are connected with temperature sensor (5), heating plate (6), circulation fan (7) and lighting device (9).
2. The steel strand relaxation performance constant temperature test chamber device according to claim 1, wherein: the number of the temperature sensors (5) is 2-4, and the temperature sensors (5) are uniformly arranged under the top plate of the temperature control box (1) or are adsorbed on the test steel strand (3) through a magnetic seat.
3. The steel strand relaxation performance constant temperature test chamber device according to claim 1, wherein: the box body material of the temperature control box (1) is double-layer stainless steel plates, and heat preservation cotton is filled in the middle interlayer of the double-layer stainless steel plates.
4. The steel strand relaxation performance constant temperature test chamber device according to claim 1, wherein: the box door (8) is provided with a visual window (10), and the visual window (10) is made of hollow glass.
5. The steel strand relaxation performance constant temperature test chamber device according to claim 1, wherein: the diameter of the sample hole (4) is 18-22 mm.
6. The steel strand relaxation performance constant temperature test chamber device according to claim 5, wherein: a stainless steel sleeve (11) with the diameter of 18-22 mm is welded at the sample hole (4).
7. The steel strand relaxation performance constant temperature test chamber device according to claim 6, wherein: and heat preservation cotton is filled between the stainless steel sleeve (11) and the test steel strand (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321848066.7U CN220270982U (en) | 2023-07-14 | 2023-07-14 | Constant temperature test box device for loosening performance of steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321848066.7U CN220270982U (en) | 2023-07-14 | 2023-07-14 | Constant temperature test box device for loosening performance of steel strand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220270982U true CN220270982U (en) | 2023-12-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321848066.7U Active CN220270982U (en) | 2023-07-14 | 2023-07-14 | Constant temperature test box device for loosening performance of steel strand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220270982U (en) |
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2023
- 2023-07-14 CN CN202321848066.7U patent/CN220270982U/en active Active
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