CN214407401U - Boiler expansion measuring device - Google Patents
Boiler expansion measuring device Download PDFInfo
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- CN214407401U CN214407401U CN202120598623.9U CN202120598623U CN214407401U CN 214407401 U CN214407401 U CN 214407401U CN 202120598623 U CN202120598623 U CN 202120598623U CN 214407401 U CN214407401 U CN 214407401U
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Abstract
The utility model relates to a boiler expansion measuring device, an integrated circuit chip, a linear displacement measuring module and a double-shaft inclination angle measuring module are arranged in a shell, and a displacement transmission telescopic rod is arranged outside the shell; one end of the linear displacement measuring module is connected with the integrated circuit chip, and the other end of the linear displacement measuring module is connected with the displacement transmission telescopic rod; the linear displacement measuring module is used for measuring the expansion amount of the displacement transmission telescopic rod; the double-shaft inclination angle measuring module is used for measuring the inclination angle of the displacement transmission telescopic rod; the integrated circuit chip is used for measuring the expansion amount of the boiler according to the expansion amount of the displacement transmission telescopic rod and the inclination angle of the displacement transmission telescopic rod. The utility model discloses simple structure to obtain the expanded three ascending data of side of boiler through linear displacement measurement module and biax inclination measurement module, utilize integrated circuit chip to calculate and obtain the boiler inflation volume, can measure the boiler inflation volume fast accurately.
Description
Technical Field
The utility model relates to a boiler expansion measures technical field, especially relates to a boiler expansion measuring device.
Background
The development of new energy power generation and the surplus of coal-electricity production promote the flexible transformation of coal-electricity step by step. Continuous low-load operation or deep peak shaving of thermal power generating units, particularly coal power generating units, becomes a normal state. The peak shaving process is the process of changing the thermal physical characteristics and the thermal stress distribution in the boiler. When the deformation of the boiler exceeds the bearing capacity of the components, the boiler can be damaged and broken, even an unplanned shutdown can be caused, and the safe operation of a power station is seriously threatened. Therefore, the expansion condition of the boiler is continuously monitored in real time, and the method has great significance for the safe operation of the boiler.
At present, the expansion indicator of the boiler is commonly used for monitoring the change of the geometric dimension of pressure equipment or parts after being heated and pressed. The outer dimensions of the pressure bearing device or component may change in the pressurized state, and if the change is outside the design specification, the change indicates that the internal pressure exceeds the bearing capacity of the device. The deformation of the evaporation equipment caused by improper ignition and pressure boosting or poor installation and maintenance can be found in time through the device, and cracks, leakage and the like caused by uneven expansion are prevented. However, the boiler expansion indicator is mostly of a contact type mechanical structure, and the reading of the indicator is the result of a site pointer falling on a graduated scale. Manual recording is required to be carried out from each monitoring point at a specific moment, the time interval of data recording is long, and the dynamic expansion condition of the boiler cannot be monitored and recorded in real time. And the distance of each point position is far away, all expansion data can not be obtained at the same time, the data timeliness is poor, and the boiler expansion data can not be analyzed correctly and abnormal data can not be found.
The boiler expansion detector based on the micro-displacement positioning technology is characterized in that an absolute encoder is used for measuring the expansion condition of the boiler, real-time expansion data are displayed through a liquid crystal display and written into a storage card, and meanwhile, the data are sent to a control room through a bus interface, so that accurate and real-time boiler expansion information can be provided for power station operators. In order to obtain three-way displacement data, a boiler expansion detector based on a micro-displacement positioning technology needs to be provided with detection mechanisms in three directions and three encoders. The mechanical structure is complicated, the occupied space is large, the field arrangement is difficult, the dust accumulation and the blockage are easy, and the circuit design is complicated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a boiler inflation measuring device to simplify boiler inflation measuring device, measure the boiler inflation volume fast accurately.
In order to achieve the above object, the utility model provides a following scheme:
a boiler expansion measuring device comprises a shell, an integrated circuit chip, a linear displacement measuring module, a double-shaft inclination angle measuring module and a displacement transmission telescopic rod;
the integrated circuit chip, the linear displacement measuring module and the double-shaft inclination angle measuring module are arranged in the shell, and the displacement transmission telescopic rod is arranged outside the shell;
one end of the linear displacement measuring module is connected with the integrated circuit chip, and the other end of the linear displacement measuring module is connected with the displacement transmission telescopic rod; the linear displacement measuring module is used for measuring the expansion amount of the displacement transmission telescopic rod;
the double-shaft inclination angle measuring module is connected with the integrated circuit chip and is used for measuring the inclination angle of the displacement transmission telescopic rod;
the integrated circuit chip is used for measuring the expansion amount of the boiler according to the expansion amount of the displacement transmission telescopic rod and the inclination angle of the displacement transmission telescopic rod.
Optionally, a cross universal joint is arranged at one end of the outer shell, which is far away from the displacement transmission telescopic rod, and the cross universal joint is used for connecting a fixed end of the boiler; the displacement transmission telescopic link is kept away from the one end of shell is provided with the flake universal joint, the flake universal joint is used for connecting the pipeline of boiler or the collection case of boiler.
Optionally, the boiler expansion measuring device further comprises a display screen, the display screen is arranged outside the shell and connected with the integrated circuit chip, and the display screen is used for displaying the boiler expansion amount and performing human-computer interaction.
Optionally, the boiler expansion measuring device further comprises a serial communication chip, the serial communication chip is arranged outside the shell and connected with the integrated circuit chip, and the serial communication chip is used for interacting with the outside.
Optionally, the boiler expansion measuring device further includes a power supply circuit, the power supply circuit is disposed in the housing and connected to the integrated circuit chip, and the power supply circuit is configured to supply power to the boiler expansion measuring device.
Optionally, the boiler expansion measuring device further comprises an input key, and the input key is arranged outside the housing and connected with the integrated circuit chip.
Optionally, the dual-axis tilt measurement module includes an X-axis tilt measurement module and a Y-axis tilt measurement module.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model discloses a boiler expansion measuring device, which comprises a shell, an integrated circuit chip, a linear displacement measuring module, a double-shaft inclination angle measuring module and a displacement transmission telescopic rod; the integrated circuit chip, the linear displacement measuring module and the double-shaft inclination angle measuring module are arranged in the shell, and the displacement transmission telescopic rod is arranged outside the shell; one end of the linear displacement measuring module is connected with the integrated circuit chip, and the other end of the linear displacement measuring module is connected with the displacement transmission telescopic rod; the linear displacement measuring module is used for measuring the expansion amount of the displacement transmission telescopic rod; the double-shaft inclination angle measuring module is connected with the integrated circuit chip and is used for measuring the inclination angle of the displacement transmission telescopic rod; the integrated circuit chip is used for measuring the expansion amount of the boiler according to the expansion amount of the displacement transmission telescopic rod and the inclination angle of the displacement transmission telescopic rod. The utility model discloses simple structure to obtain the expanded three ascending data of side of boiler through linear displacement measurement module and biax inclination measurement module, utilize integrated circuit chip to calculate and obtain the boiler inflation volume, can measure the boiler inflation volume fast accurately.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of a boiler pipeline measurement provided by the present invention;
FIG. 2 is a schematic view of the measurement of the header of the boiler provided by the present invention;
FIG. 3 is an internal structure diagram of the boiler expansion measuring device provided by the present invention;
fig. 4 is a schematic view of a planar projection of a motion trajectory provided by the present invention; fig. 4 (a) is a first schematic view of a planar projection of a motion trajectory provided by the present invention; fig. 4 (b) is a schematic plan projection diagram of a motion trajectory provided by the present invention; fig. 4 (c) is a schematic view of a movement trajectory plane projection diagram three provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a boiler inflation measuring device to simplify boiler inflation measuring device, measure the boiler inflation volume fast accurately.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-3, the boiler expansion measuring device comprises a housing, an integrated circuit chip, a linear displacement measuring module, a dual-axis inclination measuring module, and a displacement transmission telescopic rod. The integrated circuit chip, the linear displacement measuring module and the double-shaft inclination angle measuring module are arranged in the shell, and the displacement transmission telescopic rod is arranged outside the shell. One end of the linear displacement measuring module is connected with the integrated circuit chip, and the other end of the linear displacement measuring module is connected with the displacement transmission telescopic rod. The linear displacement measurement module is used for measuring the telescopic amount of the displacement transmission telescopic rod. The double-shaft inclination angle measuring module is connected with the integrated circuit chip and is used for measuring the inclination angle of the displacement transmission telescopic rod. The integrated circuit chip is used for measuring the expansion amount of the boiler according to the expansion amount of the displacement transmission telescopic rod and the inclination angle of the displacement transmission telescopic rod. Optionally, the dual-axis tilt measurement module includes an X-axis tilt measurement module and a Y-axis tilt measurement module.
In this embodiment, the one end that displacement transmission telescopic link was kept away from to the shell is provided with the cross universal joint, and the cross universal joint is used for connecting the stiff end of boiler. One end of the displacement transmission telescopic rod, which is far away from the shell, is provided with a fisheye universal joint, and the fisheye universal joint is used for connecting a pipeline of a boiler or a header of the boiler.
In this embodiment, boiler inflation measuring device still includes the display screen, and the display screen setting just is connected with integrated circuit chip outside the shell, and the display screen is used for showing boiler inflation volume and carrying out human-computer interaction. Wherein, the display screen is a liquid crystal screen.
In this embodiment, boiler expansion measuring device still includes serial communication chip, and serial communication chip sets up outside the shell and is connected with the integrated circuit chip, and serial communication chip is used for interacting with the external world.
Further, boiler expansion measuring device still includes power supply circuit, and power supply circuit sets up in the shell and is connected with the integrated circuit chip, and power supply circuit is used for supplying power for boiler expansion measuring device.
Furthermore, the boiler expansion measuring device also comprises an input key, and the input key is arranged outside the shell and connected with the integrated circuit chip. The input key is man-machine interactive input equipment used for inputting instructions to the integrated circuit chip and realizing parameter setting and initialization.
In fig. 1 and 2, the boiler steel frame is fixed on the ground as a fixed end of the boiler expansion measuring device, and the boiler expansion measuring device can be connected with a bolt welded on the boiler steel frame through a cross universal joint with an internal thread structure. The lower end of the cross universal joint is connected with a leading-out bolt on the shell. The display screen is fixed on one side of the shell by four bolts. The movable and static contact parts of the displacement transmission telescopic rod and the shell are in sliding seal, the upper end of the displacement transmission telescopic rod is connected with the linear displacement measuring module, and the lower end of the displacement transmission telescopic rod is connected with the fisheye universal joint. The displacement transmission telescopic rod can perform linear telescopic motion on a motion track consistent with the central line of the shell. The fisheye universal joint is connected with a pipe hoop sleeved on a boiler header or a boiler pipeline, and the pipe hoop moves along with the expansion of the boiler header or the boiler pipeline by means of friction force to drive the displacement transmission telescopic rod to move. The displacement transmission telescopic rod can incline when in telescopic motion. The two-axis inclination angle measurement module can measure the inclination angle variation of two inclination axes perpendicular to each other. Wherein, the displacement transmission telescopic link is stainless steel material, and the shell is full-sealed aluminum alloy structure.
In order to completely replace a mechanical three-way displacement sensor and obtain real-time continuous data of boiler expansion, the three-way expansion displacement data of a certain point of the boiler needs to be displayed and transmitted. The starting point and the end point of the three-way linear displacement have directionality, and the three-way linear displacement is vector displacement. Based on the mathematical principle analysis of trigonometric function, the method can be obtained by calculating the linear displacement of the measuring point and the angles of two deflections. As shown in (a) - (c) of fig. 4, the motion locus of a point shifted from the point O to the point O' has an angle with each of the XOZ plane, XOY plane, and YOZ plane. The length of the motion trajectory OO 'of the point and the angle of the projection of the motion trajectory OO' of the point on each surface have a trigonometric function relationship. Therefore, when the length of the point motion trajectory OO', the angle alpha and the angle beta are known, the OX, OY and OZ three-way displacement amount can be calculated. The program programmed in the integrated circuit chip utilizes trigonometric function relation to calculate and obtain the vertical projection of the vector displacement of the measuring point in three directions, namely the three-direction displacement variable quantity, and then the boiler expansion quantity can be measured.
The present embodiment is also applicable in the field. This device of one set is respectively installed in 66 meters of No. 5 boiler main steam pipelines of a certain power plant and reheat steam pipeline hot section and 12 meters department, respectively installs one set of this device in the position of the former mechanical expansion indicator of four lower headers in No. 5 boiler bottoms respectively parallelly, respectively installs one set of this device in No. 5 boiler drum both sides, and real-time measurement No. 5 boiler expansion volumes implement effectually.
The utility model discloses a straight line displacement measurement module and biax inclination measurement module obtain the expanded three ascending data of side of boiler, recycle integrated circuit chip and calculate and obtain the boiler inflation volume, can accurately measure the boiler inflation volume fast.
The utility model discloses simple structure, simple to operate, communication are simple, protection level is high, dustproof rain-proof, maintain simple, the calibration is convenient, have high practicality.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. The boiler expansion measuring device is characterized by comprising a shell, an integrated circuit chip, a linear displacement measuring module, a double-shaft inclination angle measuring module and a displacement transmission telescopic rod;
the integrated circuit chip, the linear displacement measuring module and the double-shaft inclination angle measuring module are arranged in the shell, and the displacement transmission telescopic rod is arranged outside the shell;
one end of the linear displacement measuring module is connected with the integrated circuit chip, and the other end of the linear displacement measuring module is connected with the displacement transmission telescopic rod; the linear displacement measuring module is used for measuring the expansion amount of the displacement transmission telescopic rod;
the double-shaft inclination angle measuring module is connected with the integrated circuit chip and is used for measuring the inclination angle of the displacement transmission telescopic rod;
the integrated circuit chip is used for measuring the expansion amount of the boiler according to the expansion amount of the displacement transmission telescopic rod and the inclination angle of the displacement transmission telescopic rod.
2. The boiler expansion measuring device according to claim 1, wherein one end of the housing away from the displacement transmission telescopic rod is provided with a cross universal joint, and the cross universal joint is used for connecting a fixed end of a boiler; the displacement transmission telescopic link is kept away from the one end of shell is provided with the flake universal joint, the flake universal joint is used for connecting the pipeline of boiler or the collection case of boiler.
3. The boiler expansion measuring device of claim 1, further comprising a display screen disposed outside the housing and connected to the integrated circuit chip, the display screen being configured to display the boiler expansion amount and perform human-computer interaction.
4. The boiler expansion measuring device of claim 1, further comprising a serial communication chip disposed outside the housing and connected to the integrated circuit chip, the serial communication chip being adapted to interact with the outside.
5. The boiler expansion measurement device of claim 1, further comprising a power circuit disposed within the housing and connected to the integrated circuit chip, the power circuit for powering the boiler expansion measurement device.
6. The boiler expansion measurement device of claim 1, further comprising an input button disposed outside the housing and connected to the integrated circuit chip.
7. The boiler expansion measurement device of claim 1, wherein the dual-axis tilt measurement module comprises an X-axis tilt measurement module and a Y-axis tilt measurement module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120598623.9U CN214407401U (en) | 2021-03-24 | 2021-03-24 | Boiler expansion measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120598623.9U CN214407401U (en) | 2021-03-24 | 2021-03-24 | Boiler expansion measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214407401U true CN214407401U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120598623.9U Active CN214407401U (en) | 2021-03-24 | 2021-03-24 | Boiler expansion measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214407401U (en) |
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2021
- 2021-03-24 CN CN202120598623.9U patent/CN214407401U/en active Active
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