CN217638842U - Portable austenitic stainless steel pipe oxide skin detection device - Google Patents
Portable austenitic stainless steel pipe oxide skin detection device Download PDFInfo
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- CN217638842U CN217638842U CN202221279544.2U CN202221279544U CN217638842U CN 217638842 U CN217638842 U CN 217638842U CN 202221279544 U CN202221279544 U CN 202221279544U CN 217638842 U CN217638842 U CN 217638842U
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Abstract
The utility model provides a portable austenitic stainless steel pipe oxide skin detection device, which comprises a first shell, wherein a pressure sensor and a magnet are installed at the top of the first shell, and the magnet is arranged below the pressure sensor; the magnet interacts with an iron block arranged in the inner cavity of the austenitic stainless steel pipe to be detected; the output end of the pressure sensor is connected with an oxide skin display instrument; the device can ensure the operation of operators in different areas and ensure the personal safety of the operators.
Description
Technical Field
The utility model relates to a nondestructive test field especially relates to a portable austenitic stainless steel pipe oxide skin detection device.
Background
Austenitic stainless steel is widely used in recent years in boiler high-temperature heating surface parts of (supercritical) thermal power generating units at home and abroad due to good ductility, weldability, structural stability, high temperature resistance, steam corrosion resistance and higher heat strength. Because the inner wall of the austenitic stainless steel high-temperature heating surface tube is easily subjected to high-temperature oxidation under the action of long-term high-temperature steam, a large amount of oxide skin is generated. This not only results in a thinning of the tube but also in tube bursting due to scale build-up.
At present, a magnetic detection method is used for detecting oxide scales on the inner wall of an austenitic stainless steel pipe. The traditional magnetic detection method detects the oxide skin with the same magnetism by utilizing a magnetic field generated by a probe, the oxide skin can interfere with the magnetic induction intensity generated by the probe, and a signal receiver judges the distribution of the oxide skin in the boiler tube according to the intensity of a magnetic induction intensity signal. However, there are many substances with magnetism inside the furnace, and there may be substances interfering with magnetic induction, resulting in misalignment of detection data. In addition, in the conventional magnetic detection method, only the peeled oxide skin can be detected, but the produced and un-peeled oxide skin cannot be detected, so that the actual aging condition of the pipe is misjudged, and finally, more serious economic loss and casualties are caused. In addition, the traditional detection instruments are connected through wires, on one hand, the wire port is easily covered by fly ash in the hearth, so that the port is short-circuited, the instruments are out of order, and the detection cannot be continued; on the other hand, the high-altitude operation space in the hearth is limited or the bearing capacity of the high-altitude support is low, so that in order to ensure that a plurality of safe operators cannot be in the same region for detection, the operators need to stand in different regions, and the short connecting wires cannot meet the requirement of long-distance signal transmission.
Disclosure of Invention
An object of the utility model is to provide a portable austenitic stainless steel pipe cinder detection device has solved the above-mentioned not enough that exists among the prior art.
In order to achieve the above purpose, the utility model discloses a technical scheme is:
the utility model provides a portable austenitic stainless steel pipe oxide skin detection device, which comprises a first shell, wherein a pressure sensor and a magnet are installed at the top of the first shell, and the magnet is arranged below the pressure sensor; the magnet interacts with an iron block arranged in the inner cavity of the austenitic stainless steel pipe to be detected; and the output end of the pressure sensor is connected with an oxide skin display instrument.
Preferably, the output end of the pressure sensor is connected with a scale indicator through an A/D converter.
Preferably, the output end of the A/D converter is connected with a scale indicator through a digital amplifier.
Preferably, the pressure sensor is connected with the scale indicator through a short-distance wireless transmission unit.
Preferably, a protective layer is slidably mounted on the top of the first housing, and the protective layer is arranged above the pressure sensor and is in contact with the input end of the pressure sensor; and the top of the protective layer is in contact with the outer wall of the austenitic stainless steel pipe to be detected.
Preferably, one end face, in contact with the outer wall of the austenitic stainless steel pipe to be detected, of the protection layer is of an arc structure.
Preferably, a spring is arranged between the first shell and the protective layer.
Preferably, the pressure sensor is a ceramic pressure sensor, a diffused silicon pressure sensor, a sapphire pressure sensor, or a piezoresistive pressure sensor.
Preferably, a storage battery is connected with the pressure sensor.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a pair of portable austenitic stainless steel pipe cinder detection device judges the content and the distribution of intraductal cinder through the magnetic force between magnet that sets up and the cinder for the oxide scale that has produced but not peeled off can be detected, can accurate detection stainless steel pipe's the ageing condition, reduces unnecessary economic loss.
Furthermore, digital signals are transmitted to a digital receiver in the oxide skin display instrument through the short-distance wireless transmission unit, so that the arrangement of ports of connecting wires is reduced, and the short circuit and the damage of the furnace fly ash to the instrument are avoided.
The device can ensure the operation of operators in different areas and ensure the personal safety of the operators.
Drawings
FIG. 1 is a schematic structural view;
FIG. 2 is a schematic diagram of actual detection;
wherein, 1, a first shell; 2. a second housing; 3. an oxide skin display instrument; 4. a protective layer; 5. a pressure sensor; 6. a magnet; 7. an A/D converter; 8. a digital amplifier; 9. a short-range wireless transmission unit; 10. a spring; 11. a battery; 12. a digital receiver; 13. an oxide scale display instrument; 14. fixing the clamping groove; 15. the austenitic stainless steel tube to be tested.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.
In the using process, the protective layer 4 is attached to the outer surface of the austenitic stainless steel pipe 15 and moves, the oxide skin in the pipe and the magnetic force generated by the magnet 6 directly act on the pressure sensor 5, the electric signal transmitted by the pressure sensor 5 is converted into a digital signal by the A/D converter 7, the digital signal is amplified by the digital amplifier 8 and then transmitted to the digital receiver 12 in the oxide skin display instrument 3 by the short-distance wireless transmission unit 9, and the final oxide skin value is displayed on the oxide skin display instrument 13.
Specifically, the method comprises the following steps:
the utility model provides a portable austenitic stainless steel pipe oxide skin detection device, which comprises a first shell 1, a second shell 2 and an oxide skin display instrument 3, wherein the first shell 1 and the second shell 2 are in butt joint; the scale indicator 3 is mounted on the first housing 1.
The top of the first shell 1 is provided with a clamping groove, and the protective layer 4 is slidably mounted on the clamping groove, so that the protective layer 4 can slide up and down along the clamping groove to apply pressure to the pressure sensor 5.
The bottom of the first shell 1 is provided with a spring 10, and the top of the spring 10 is fixedly connected to the bottom of the protective layer 4.
Fixed mounting has fixed slot in the inner chamber of first casing 1, fixed mounting has pressure sensor 5 in the fixed slot, pressure sensor 5 arranges the below of protective layer 4 in.
And a magnet 6 is fixedly arranged in the inner cavity of the first shell 1, and the magnet 6 is arranged below the pressure sensor 5 and is acted with an iron block arranged in the inner cavity of the austenitic stainless steel pipe 15 to be detected.
The top of the protective layer 4 is of an arc structure and is matched with the outer wall of the austenitic stainless steel pipe 15 to be measured.
The pressure sensor 5 is one of a ceramic pressure sensor, a diffused silicon pressure sensor, a sapphire pressure sensor and a piezoresistive pressure sensor.
The magnet 6 is a permanent magnet.
The a/D converter 7 is an ADS1110, and can convert the electric signal transmitted by the pressure sensor 5 into a digital signal. The digital amplifier 8 is TLC27M2.
The short-distance wireless transmission unit 9 is a Zigbee terminal.
The storage battery 11 respectively supplies power to the pressure sensor 5, the A/D converter 7, the digital amplifier 8 and the short-distance wireless transmission unit 9.
The oxide scale display instrument 13 selects C1602 to display the content of the oxide scale of the austenitic stainless steel pipe.
The inner cavity of the second shell 2 is used for placing a storage battery.
The first shell 1 and the second shell 2 are connected through screw threads.
When in use:
the utility model discloses to actual work concrete operating procedure as follows:
1. the detection device is moved slowly along the outer wall of the austenitic stainless steel pipe to be detected, so that the detection device is ensured to be attached to the outer wall of the steel pipe to be detected, as shown in figure 2;
2. adjusting the circumferential direction of the detection device to ensure that the magnet completely scans the whole circumference of the austenitic stainless steel pipe;
3. and on the premise of ensuring that the detection device is tightly attached to the outer wall of the steel pipe to be detected, slowly moving the detection device along the axis direction of the pipe, and recording the maximum value in the detection signal.
The utility model discloses a theory of operation:
the pressure sensor is acted upon by the magnetic force between the permanent magnet and the scale, causing the resulting pressure to be converted into a displacement or strain, and subsequently into an electrical signal in a relationship to the pressure. Turn into digital signal with the signal of telecommunication through the AD converter, finally show in the cinder display instrument, simultaneously, because the austenite stainless steel pipe hoist and mount installation that awaits measuring, consequently, when can prevent near operation space outside magnetic substance's interference, avoid disturbing the accuracy of measuring data because of austenite stainless steel pipe self gravity that awaits measuring, the utility model discloses can ensure the accuracy of measuring data.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may apply the equivalent embodiments modified or modified by the above technical contents disclosed as equivalent variations to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The portable austenitic stainless steel pipe oxide skin detection device is characterized by comprising a first shell (1), wherein a pressure sensor (5) and a magnet (6) are mounted at the top of the first shell (1), and the magnet (6) is arranged below the pressure sensor (5); the magnet interacts with an iron block arranged in the inner cavity of the austenitic stainless steel pipe (15) to be detected; and the output end of the pressure sensor (5) is connected with an oxide skin display instrument.
2. The portable austenitic stainless steel tube scale detecting apparatus as claimed in claim 1, wherein the output end of the pressure sensor (5) is connected to a scale display through an a/D converter.
3. The portable austenitic stainless steel tube scale detecting apparatus as claimed in claim 2, wherein the output end of the a/D converter is connected to a scale display instrument through a digital amplifier (8).
4. The portable austenitic stainless steel tube scale detecting apparatus according to claim 1, wherein the pressure sensor (5) is connected to the scale indicator through a short-distance wireless transmission unit.
5. The portable austenitic stainless steel tube scale detecting device as claimed in claim 1, wherein a protective layer (4) is slidably mounted on the top of the first housing (1), the protective layer (4) is disposed above the pressure sensor (5) and is in contact with the input end of the pressure sensor; and the top of the protective layer (4) is in contact with the outer wall of the austenitic stainless steel pipe to be detected.
6. The portable austenitic stainless steel tube scale detecting device as claimed in claim 5, wherein the end of the protective layer (4) contacting the outer wall of the austenitic stainless steel tube to be detected is in a circular arc structure.
7. A portable austenitic stainless steel tube scale detecting apparatus according to claim 5, characterized in that a spring is provided between the first housing (1) and the protective layer (4).
8. The portable austenitic stainless steel tube scale detecting apparatus according to claim 1, wherein the pressure sensor (5) is a ceramic pressure sensor, a diffused silicon pressure sensor, a sapphire pressure sensor, or a piezoresistive pressure sensor.
9. The portable austenitic stainless steel tube scale detecting apparatus according to claim 1, wherein the pressure sensor (5) is connected with a storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221279544.2U CN217638842U (en) | 2022-05-25 | 2022-05-25 | Portable austenitic stainless steel pipe oxide skin detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221279544.2U CN217638842U (en) | 2022-05-25 | 2022-05-25 | Portable austenitic stainless steel pipe oxide skin detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217638842U true CN217638842U (en) | 2022-10-21 |
Family
ID=83656290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221279544.2U Active CN217638842U (en) | 2022-05-25 | 2022-05-25 | Portable austenitic stainless steel pipe oxide skin detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217638842U (en) |
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2022
- 2022-05-25 CN CN202221279544.2U patent/CN217638842U/en active Active
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