CN214039836U - Device for measuring abrasion of excircle of heat exchange tube of H-shaped fin economizer - Google Patents
Device for measuring abrasion of excircle of heat exchange tube of H-shaped fin economizer Download PDFInfo
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- CN214039836U CN214039836U CN202023327910.0U CN202023327910U CN214039836U CN 214039836 U CN214039836 U CN 214039836U CN 202023327910 U CN202023327910 U CN 202023327910U CN 214039836 U CN214039836 U CN 214039836U
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Abstract
An object of the utility model is to disclose a H type fin economizer heat exchange tube excircle wearing and tearing measuring device, including standard radian board, elasticity measurement quarter butt, rotor plate, extension measuring stick and percentage table, the welding of elasticity measurement quarter butt is in on the standard radian board, the elasticity measurement quarter butt pass through the rotor plate with the bottom of extension measuring stick is connected, the top of extension measuring stick through tight setting device with the percentage table is connected, the upper portion of extension measuring stick is provided with the pressing handle, the interior radian of standard radian board is unanimous with the heat exchange tube; compared with the prior art, the size is small, the width is less than 15mm, the length of the standard radian plate is about 50mm, the diameter of the extension measuring rod is 16mm, the extension measuring rod can be changed at 500-1000mm according to the length of an inspection part, and the requirement of extending into the fin economizer for inspection can be met; under the condition of adjusting the standard value, the inspection time of every point is about 10 seconds, has practiced thrift inspection time and intensity of labour greatly, realizes the utility model discloses a purpose.
Description
Technical Field
The utility model relates to a heat exchange tube excircle wearing and tearing measuring device, in particular to H type fin economizer heat exchange tube excircle wearing and tearing measuring device.
Background
The H-shaped fin heat exchange tube is mainly used for the economizer of the thermal power plant, and the fins are welded outside the light tube, so that the heat exchange area is increased, and the heat exchange capacity of the economizer is improved. The space between the tube rows of the general coal economizer is about 120mm, the space between the fins is about 30mm, and the gaps between the tube rows are small, so that the inconvenience of overhauling and checking is brought. (see FIG. 1)
After the temperature of the tail flue gas of the boiler of the thermal power plant is reduced to be below 500 ℃, the fly ash has certain hardness. When the flow field of the flue is not uniform, the condition of high local smoke velocity can occur, and the excircle of the economizer pipe is abraded and out of round. Generally, the first flue gas facing the flue gas is provided with an anti-abrasion tile which is not easy to be abraded, and the 2 nd to 5 th flue gas are always abraded. When the wear loss circle is below the theoretical wall thickness, there is a risk that economizer leakage is forced to shut down. Therefore, the abrasion inspection of the pipeline on the heating surface of the economizer is an important content of the abrasion-proof and explosion-proof inspection of the boiler in the thermal power plant.
(see FIG. 2)
Because the space between the economizer tube row and the fins is small, if a thickness gauge device is adopted for pipeline thinning inspection, the fins are required to be removed, only the 2 nd fin can be inspected, and whether the excircle of the heat exchange tube after the 3 rd fin is worn or not is difficult to inspect carefully. Because the number of the tube rows of the coal economizer is large, the area of the coal economizer is wide, visual methods, light methods and hand feeling methods are mostly adopted on the spot at present, judgment can be carried out only by experience, and more risks exist.
Therefore, a device for measuring the abrasion of the excircle of the heat exchange tube of the H-shaped fin economizer is particularly needed to solve the existing problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a H type fin economizer heat exchange tube excircle wearing and tearing measuring device, to prior art's not enough, can satisfy and stretch into the inside requirement of going on examining of fin economizer, practiced thrift check-out time and intensity of labour greatly.
The utility model provides a technical problem can adopt following technical scheme to realize:
the utility model provides a H type fin economizer heat exchange tube excircle wearing and tearing measuring device, its characterized in that, includes standard radian board, elasticity measurement quarter butt, rotor plate, extension measuring stick and percentage table, the welding of elasticity measurement quarter butt is in on the standard radian board, the elasticity measurement quarter butt pass through the rotor plate with the bottom of extension measuring stick is connected, the top of extension measuring stick through tight setting device with the percentage table is connected, the upper portion of extension measuring stick is provided with presses the handle, the interior radian of circle of standard radian board is unanimous with the heat exchange tube.
In an embodiment of the present invention, the extension measuring rod and the elastic measuring short rod are disposed at a certain angle.
In an embodiment of the present invention, the upper portion of the extension measuring rod is further provided with a calibration device for calibrating the standard pipeline.
Compared with the prior art, the measuring device for the excircle abrasion of the heat exchange tube of the H-shaped fin economizer has the advantages that the measuring device is small in size, the width is less than 15mm, the length of the standard radian plate is about 50mm, the diameter of the lengthened measuring rod is 16mm, the measuring device can be changed at 500 plus 1000mm according to the length of an inspection part, and the requirement of stretching into the fin economizer for inspection can be met; under the condition of adjusting the standard value, the inspection time of every point is about 10 seconds, has practiced thrift inspection time and intensity of labour greatly, realizes the utility model discloses a purpose.
The features of the present invention will be apparent from the accompanying drawings and from the detailed description of the preferred embodiments which follows.
Drawings
Fig. 1 is a schematic structural diagram of a conventional H-shaped fin heat exchange tube;
FIG. 2 is a schematic structural diagram of a heat exchange tube heating surface pipeline of a conventional H-shaped fin economizer;
FIG. 3 is a schematic structural view of the device for measuring the excircle wear of the heat exchange tube of the H-shaped fin economizer of the present invention;
fig. 4 is a schematic view of the use state of the device for measuring the abrasion of the excircle of the heat exchange tube of the H-shaped fin economizer of the present invention.
The device comprises an anti-abrasion tile 1, an anti-abrasion tile 2, fins 2, a heat exchange tube 3, a standard radian plate 4, an elastic measuring short rod 5, a rotating plate 6, a lengthened measuring rod 7, a pressing handle 8, a calibration device 9, a fastening device 10 and a dial indicator 11.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Examples
As shown in fig. 3 and 4, the utility model discloses a H type fin economizer heat exchange tube excircle wearing and tearing measuring device, including standard radian board 4, elasticity measurement quarter butt 5, rotor plate 6, extension measuring stick 7 and percentage table 11, the welding of elasticity measurement quarter butt 5 is on standard radian board 4, elasticity measurement quarter butt 5 is connected with the bottom of extension measuring stick 7 through rotor plate 6, the top of extension measuring stick 7 is connected with percentage table 11 through tight setting device 10, the upper portion of extension measuring stick 7 is provided with and presses down handle 8, the interior radian of circle of standard radian board 4 is unanimous with heat exchange tube 3.
In the present embodiment, a calibration device 9 for calibrating a standard pipeline is further provided on the upper portion of the extension measuring rod 7.
The elastic measuring short rod 5 is welded on the standard radian plate 4 and is used for measuring the abrasion loss of the pipeline; the rotating plate 6 transfers the measuring displacement of the elastic measuring short rod 5 to the lengthening measuring rod 7; the lengthened measuring rod 7 is used for transmitting the displacement of the rotating plate 6 to the dial indicator 11 and forms a certain angle with the elastic measuring short rod 5; the pressing handle 8 is used for manually pressing during measurement, and transmits the force to the rotating plate 6 through the lengthened measuring rod 7 and then to the elastic measuring short rod 5 for measurement; the calibration device 9 is used for calibrating the standard pipeline; the fastening device 10 is used for fixing the dial indicator 11 and adjusting the zero position before measurement of the dial indicator 11; the dial indicator 11 senses the displacement change of the elongated measuring rod 7.
The utility model discloses a measurement principle of H type fin economizer heat exchange tube excircle wearing and tearing measuring device:
the wear of the economizer heat exchange tube generally occurs at two side parts of the smoke facing surface, and for the convenience of measurement, the elastic measurement short rod 5 and the extension measuring rod 7 form a certain angle to just meet the measurement of the frequently worn part. The inner arc of the standard radian plate 4 is consistent with the diameter of the outer circle of the heat exchange tube 3, and when the standard radian plate is tightly attached to the heat exchange tube 3, if the heat exchange tube 3 is not abraded, the gap between the inner arc of the standard radian plate 4 and the outer circle of the heat exchange tube 3 is very small. If the heat exchange tube 3 is worn obviously, the gap between the inner arc of the standard radian plate 4 and the outer circle of the heat exchange tube 3 is larger. The elastic measuring short rod 5 can measure the abrasion loss of the heat exchange tube by extending into the gap.
The utility model discloses a measuring method of H type fin economizer heat exchange tube excircle wearing and tearing measuring device:
1. before measurement, calibration is carried out on a pipeline which is not worn, the standard radian plate 4 is tightly attached to the standard pipeline, a measurer presses the pressing handle 8, the calibration device 9 is locked, the dial indicator 11 is adjusted to be 6.0mm (taking the thickness of the heat exchange pipeline as an example, the thickness can be increased if the thickness is thicker), the fastening device 10 of the dial indicator 11 is locked, and calibration is finished.
2. Because the spring is installed at the bottom of the elastic measuring short rod 5, the elastic measuring short rod 5 is tightly pushed towards the dial indicator 11 side at any time. Before field measurement, firstly cleaning a measurement pipeline, tightly attaching the standard radian plate 4 to the to-be-measured pipeline, pressing the pressing handle 8, and recording a measured value, wherein the abrasion loss of the heating surface pipeline is a dial indicator calibration value-a field measured value. Because the maximum position of the pipeline abrasion can be deviated, the measured angle can be adjusted to measure a plurality of points to evaluate the abrasion loss.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (3)
1. The utility model provides a H type fin economizer heat exchange tube excircle wearing and tearing measuring device, its characterized in that, includes standard radian board, elasticity measurement quarter butt, rotor plate, extension measuring stick and percentage table, the welding of elasticity measurement quarter butt is in on the standard radian board, the elasticity measurement quarter butt pass through the rotor plate with the bottom of extension measuring stick is connected, the top of extension measuring stick through tight setting device with the percentage table is connected, the upper portion of extension measuring stick is provided with presses the handle, the interior radian of circle of standard radian board is unanimous with the heat exchange tube.
2. The device for measuring the excircle wear of the heat exchange tube of the H-shaped fin economizer as claimed in claim 1, wherein the extension measuring rod and the elastic measuring short rod are arranged at a certain angle.
3. The device for measuring the excircle wear of the heat exchange tube of the H-shaped fin economizer as claimed in claim 1, wherein a calibration device for calibrating a standard pipeline is further arranged at the upper part of the extension measuring rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023327910.0U CN214039836U (en) | 2020-12-31 | 2020-12-31 | Device for measuring abrasion of excircle of heat exchange tube of H-shaped fin economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023327910.0U CN214039836U (en) | 2020-12-31 | 2020-12-31 | Device for measuring abrasion of excircle of heat exchange tube of H-shaped fin economizer |
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| Publication Number | Publication Date |
|---|---|
| CN214039836U true CN214039836U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023327910.0U Active CN214039836U (en) | 2020-12-31 | 2020-12-31 | Device for measuring abrasion of excircle of heat exchange tube of H-shaped fin economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214039836U (en) |
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2020
- 2020-12-31 CN CN202023327910.0U patent/CN214039836U/en active Active
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