CN114719888A - Intelligent fan bolt online health monitoring system - Google Patents
Intelligent fan bolt online health monitoring system Download PDFInfo
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- CN114719888A CN114719888A CN202210166189.6A CN202210166189A CN114719888A CN 114719888 A CN114719888 A CN 114719888A CN 202210166189 A CN202210166189 A CN 202210166189A CN 114719888 A CN114719888 A CN 114719888A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses an intelligent fan bolt online health monitoring system which comprises an intelligent gasket, an acquisition terminal, a processing terminal, a server and an APP client. The intelligent gasket comprises a metal upper sheet, a plurality of contact columns, an elastic layer, a monitoring sheet and a metal lower sheet. According to the intelligent fan bolt online health monitoring system, the elastic layer of the intelligent gasket is made of a metal material, so that the contact and the contact column can be effectively separated from contact, and the sensitivity of the monitoring system is improved; through the change of monitoring intelligent packing ring internal circuit voltage, the connection state of feedback bolt has improved monitoring system's reliability. The intelligent gasket can be repeatedly used, the connection state of the bolt can be fed back in real time, and the connection state of the bolt can be checked at the APP client at any time and any place, so that the operation and maintenance workload of the fan is reduced, and the operation and maintenance cost of monitoring the bolt of the fan is reduced.
Description
Technical Field
The invention relates to the technical field of wind power, in particular to an intelligent online health monitoring system for a fan bolt.
Background
In the wind-powered electricity generation field, the bolt is because the complete machine vibration can take place not hard up often to influence the normal operating of fan, serious can influence the structural health of fan self, destroy fan major structure even, cause the fan accident of collapsing. At present, a study on the problem of Monitoring bolt loosening in different Structural systems is carried out by using a more SHM (Structural Health Monitoring) method. Common technical methods mainly include 4 types of SHM technologies based on vibration, electromechanical impedance, guided wave and grating.
According to the monitoring method based on vibration, as the fan hub is directly connected with the fan blade, the size and the direction of wind power directly influence the vibration frequency of the bolt and the connecting piece in the hub, and the loosening condition of the bolt is difficult to monitor by depending on the vibration frequency. Generally, the number of the hub bearing bolts is 54, and when the bolts with the angle of 0-180 degrees are loosened sequentially by 8 bolts, the bearing vibration is obvious. The vibration monitoring cannot achieve point-to-point monitoring, only can be regional monitoring, the monitoring error is large, and serious problems such as fracture or crack can be monitored.
The monitoring method based on the electrical impedance is characterized in that the thin film resistor is directly attached to the surface of a bottom hole of a bolt connected with the bolt, when the bolt looses, the thin film resistor is directly damaged, the impedance is increased, and therefore the purpose of monitoring the loosening of the bolt is achieved. But this product can not reuse, and the construction degree of difficulty is big, because fan bearing inside oil is great, the attached film drops easily to it is difficult to monitor bearing bolt looseness ideally.
In the monitoring method based on the guided wave technology, the guided wave technology is generally used for detecting flaws of a machine body structure, is sensitive to boundary conditions, and has the characteristic that the structure is inconsistent with the structure when damaged and not damaged. But it is not easy to inspect complex shaped workpieces, requiring a certain finish on the surface of the body structure being inspected and requiring a coupling agent to fill the gap between the probe and the surface being inspected to ensure adequate acoustic coupling. Therefore, the monitoring method based on the guided wave technology is difficult to apply to some castings and welding lines with coarse grains because disordered reflected waves are easy to generate.
The monitoring method based on the grating technology uses the fiber grating to monitor the looseness of the bolt, and mainly has the advantages that the cost is high, a set of demodulator at the rear end is at least about 5 million RMB, a front-end sensor is added, the comprehensive cost of a set of monitoring system is at least 8 million RMB, and the fiber grating monitoring is sensitive to temperature change, if the monitoring method is used, a temperature sensor is required to be arranged for parameter correction, so that the complexity of the system is increased, the reliability is reduced, and the cost is further increased.
Therefore, the problems of large monitoring error, incapability of recycling, large construction difficulty, poor anti-interference capability, high cost and the like generally exist in the existing SHM method based on vibration, electromechanical impedance, guided wave and grating.
Disclosure of Invention
The invention aims to provide an intelligent fan bolt online health monitoring system to improve the reliability and sensitivity of bolt looseness monitoring and reduce operation and maintenance cost.
In order to achieve the purpose, the invention provides the following scheme:
an intelligent fan bolt online health monitoring system, comprising: the system comprises an intelligent gasket, an acquisition terminal, a processing terminal, a server and an APP client;
the intelligent washer is arranged between a nut of a fan bolt to be monitored and a fan main body structure; the intelligent gasket comprises an upper metal sheet, a plurality of contact columns, an elastic layer, a monitoring sheet and a lower metal sheet; the contact pillars are positioned on one side of the upper metal sheet close to the lower metal sheet; the elastic layer comprises a plurality of metal springs, and the metal springs penetrate through the contact posts; a plurality of contacts are arranged on the monitoring sheet, and the positions of the contacts correspond to the positions of the contact columns one by one; one side of the monitoring sheet, which is provided with the contact, can be in contact with the contact column; the lower metal sheet is positioned on the non-contact side of the monitoring sheet; the metal upper sheet is jointed with the metal lower sheet;
the monitoring sheet of the intelligent gasket is electrically connected with the acquisition terminal through a lead; the acquisition terminal is wirelessly connected with the processing terminal; the processing terminal and the APP client are respectively connected with the server through a mobile network.
Optionally, the number of the contact columns is 1-1000; the length of the contact column is 1mm-100 mm; the contact column is cylindrical or polygonal column.
Optionally, the inner diameter of the intelligent gasket is 1mm-1000 mm; the outer diameter of the intelligent gasket is 1mm-2000 mm; the thickness of the intelligent gasket is 2mm-20 mm.
Optionally, the inner diameter of the metal upper sheet is smaller than or equal to the inner diameter of the monitoring sheet; the outer diameter of the metal upper sheet is more than or equal to that of the monitoring sheet; the outer diameter of the upper metal sheet is smaller than or equal to that of the lower metal sheet.
Optionally, the metal bottom piece is shaped as a bottle cap.
Optionally, the acquisition terminal is electrically connected with 8 intelligent gaskets through wires; the acquisition terminal acquires a voltage signal output by the intelligent gasket, converts the voltage signal into a digital quantity and sends the digital quantity to the processing terminal; and the processing terminal performs error correction, recovery and packaging processing on the digital quantity input by the acquisition terminal to form a digital signal, and remotely transmits the digital signal to the server through a mobile network.
Optionally, the server stores position information of the fan bolt to be monitored, where the position information includes an area where the fan bolt to be monitored is located, a wind field, a fan number, and a specific position on the fan; the server receives the digital signal transmitted by the processing terminal and performs logic judgment on the digital signal to form a bolt connection state judgment result; and the server sends the position information of the fan bolt to be monitored and the corresponding bolt connection state judgment result to the APP client.
Optionally, the APP client is used for displaying the position information of the fan bolt to be monitored and a corresponding bolt connection state judgment result.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides an intelligent fan bolt online health monitoring system which comprises an intelligent gasket, an acquisition terminal, a processing terminal, a server and an APP client side, wherein the intelligent gasket is arranged on the server; the intelligent washer is arranged between a nut of the fan bolt to be monitored and the fan main body structure; the intelligent gasket comprises an upper metal sheet, a plurality of contact columns, an elastic layer, a monitoring sheet and a lower metal sheet; the contact pillars are positioned on one side of the upper metal sheet close to the lower metal sheet; the elastic layer comprises a plurality of metal springs, and the metal springs penetrate through the contact posts; a plurality of contacts are arranged on the monitoring sheet, and the positions of the contacts correspond to the positions of the contact columns one by one; one side of the monitoring sheet, which is provided with the contact, can be in contact with the contact column; the lower metal sheet is positioned on the non-contact side of the monitoring sheet; the metal upper sheet is jointed with the metal lower sheet; the monitoring sheet of the intelligent gasket is electrically connected with the acquisition terminal through a lead; the acquisition terminal is wirelessly connected with the processing terminal; the processing terminal and the APP client are respectively connected with the server through a mobile network. According to the intelligent fan bolt online health monitoring system, the elastic layer of the intelligent gasket is made of a metal material, so that the contact and the contact column can be effectively separated from contact, and the sensitivity of the monitoring system is improved; through the change of monitoring intelligent packing ring internal circuit voltage, the connection state of feedback bolt has improved monitoring system's reliability. The intelligent gasket can be repeatedly used, the connection state of the bolt can be fed back in real time, and the connection state of the bolt can be checked at the APP client at any time and any place, so that the operation and maintenance workload of the fan is reduced, and the operation and maintenance cost of monitoring the bolt of the fan is reduced.
In addition, the material and the device used in the invention have strong environmental adaptability and can normally work at the temperature of-70 ℃ to 120 ℃. And the acquisition terminal and the processing terminal adopt wireless transmission communication, and the acquisition terminal is connected with the intelligent gasket by a short line, so the system can monitor the rotating part of the mechanical structure, is not limited by wired connection, and has wide engineering application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic connection diagram of an intelligent fan bolt online health monitoring system provided by the invention;
FIG. 2 is a schematic structural diagram of an intelligent gasket provided by the present invention;
FIG. 3 is a schematic view of the monitoring state of the intelligent gasket provided by the present invention;
FIG. 4 is a schematic diagram of an acquisition terminal according to the present invention;
FIG. 5 is a schematic diagram of a processing terminal according to the present invention;
FIG. 6 is a diagram of a background login interface of a server provided by the present invention;
FIG. 7 is an APP client interface diagram provided by the present invention;
description of the symbols: 1. intelligent packing ring, 11, metal upper plate, 12, contact post, 121, contact column cap, 13, metal spring, 14, monitoring piece, 141, contact, 142, wire, 15, metal lower plate, 2, collection terminal, 3, processing terminal, 4, server, 5, APP customer end.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention aims to provide an intelligent fan bolt online health monitoring system to improve the reliability and sensitivity of bolt looseness monitoring and reduce operation and maintenance cost.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic connection diagram of an intelligent fan bolt online health monitoring system provided by the invention. As shown in FIG. 1, an intelligent online health monitoring system for fan bolts comprises: intelligent packing ring 1, acquisition terminal 2, processing terminal 3, server 4 and APP customer end 5. The monitoring sheet 14 of the intelligent gasket 1 is electrically connected with the acquisition terminal 2 through a lead 142; the acquisition terminal 2 is wirelessly connected with the processing terminal 3; the processing terminal 3 and the APP client 5 are respectively connected with the server 4 through a mobile network.
The working process of the intelligent fan bolt online health monitoring system is as follows: the intelligent gasket 1 is installed between a nut of a fan bolt to be monitored and a fan main body structure. The acquisition terminal 1 acquires the voltage signal output by the intelligent gasket 1, converts the voltage signal into digital quantity, and sends the digital quantity to the processing terminal 3. The processing terminal 3 performs processing such as error correction, recovery, and packaging on the received digital quantity to form a digital signal, and then transmits the digital signal to the server 4 through the mobile signal. And the server 4 receives the digital signal transmitted by the processing terminal 3, performs logic judgment on the digital signal to form a bolt connection state judgment result, and then sends the position information of the fan bolt to be monitored and the corresponding bolt connection state judgment result to the APP client.
Fig. 2 is a schematic structural diagram of the intelligent gasket provided by the invention. As shown in fig. 2, the smart gasket 1 includes a metal upper sheet 11, a plurality of contact pillars 12, an elastic layer, a monitoring sheet 14, and a metal lower sheet 15. Specifically, the metal upper plate 11 has a plurality of contact pillars 12 on one side thereof, the number of the contact pillars 12 is in the range of 1-1000, the length of the contact pillars 12 is in the range of 1mm-100mm, and the contact pillars are cylindrical or polygonal cylindrical in shape.
The elastic layer includes a plurality of metal springs 13, which penetrate the contact posts 12. The metal spring has stronger elasticity, and when the bolt loosens, the contact 141 can be effectively separated from the contact column head 121, and the monitoring sensitivity is improved.
The monitoring sheet 14 is provided with a plurality of contacts 141, the number of the contacts 141 is the same as that of the contact posts 12, and the positions of the plurality of contacts 141 correspond to the positions of the plurality of contact posts 12 one by one. The side of the monitoring tab 14 on which the contacts are provided can be in contact with the contact posts 12. The monitoring sheet 14 is further connected with a lead 142, and is electrically connected with the acquisition terminal 2 through the lead 142.
The metal lower piece 15 is located on the contactless side of the monitoring piece 14. The lower metal sheet 15 is shaped like a bottle cap and is joined to the upper metal sheet 11. Specifically, the inner diameter of the metal upper plate 11 is smaller than or equal to the inner diameter of the monitoring plate 14; the outer diameter of the metal upper sheet 11 is more than or equal to that of the monitoring sheet 14; the outer diameter of the upper metal sheet 11 is smaller than or equal to the outer diameter of the lower metal sheet 15. The upper metal sheet 11 and the lower metal sheet 15 not only play a role in bearing and preventing scratches, but also play a role in sealing and protecting.
The inner diameter of the intelligent gasket 1 is 1mm-1000mm, the outer diameter of the intelligent gasket 1 is 1mm-2000mm, and the thickness of the intelligent gasket 1 is 2mm-20 mm. As a specific example, the thickness of the intelligent gasket 1 is 3mm, and the intelligent gasket is applicable to M16-M46 bolts according to GB/T3103.3-2000.
Specifically, the working principle of the intelligent gasket 1 is as follows: when the bolt to be monitored is in a fastening state, the metal upper sheet 11 is under the action of pressure, the metal upper sheet 11 moves towards the monitoring sheet 14, the contact column 12 on the metal upper sheet 11 moves towards the monitoring sheet 14 together until the contact column head 121 of the contact column 12 is in contact with the contact 141 on the monitoring sheet 14, the intelligent gasket 1 is in a compressed state, and therefore a circuit in the monitoring sheet 14 is in a conducting state and outputs a voltage signal. When the bolt to be monitored is in a loose state, under the action of the metal spring 13, the contact stud 121 of the contact stud 12 is separated from the contact 141 on the monitoring piece 14, the circuit in the monitoring piece 14 is in an open state, and the output voltage signal is zero.
As an extension of the working principle of the intelligent gasket 1, in practical application, the working principle is to monitor the signal state change of the circuit in the sheet 14 by adjusting the structure and material parameters of the elastic layer according to the requirements of different tightening torques, so as to represent the connection state of the bolt to be monitored. A series of products with different specifications can be provided according to the magnitude of the tightening torque to meet the monitoring requirements of the connection states of bolts with different types (corresponding to different tightening torques). For example, the M30 washer can withstand 510KN of pressure, about 3060Nm of tightening torque.
Fig. 3 is a schematic diagram of a monitoring state of the intelligent gasket provided by the present invention. As shown in figure 3, the intelligent gasket 1 is arranged between a nut of a fan bolt to be monitored and a main structure of the fan, is sensitive to change of the stress state of the bolt, and can improve monitoring sensitivity. And the material and the device used by the intelligent gasket 1 have strong environmental adaptability and can normally work at the temperature of-70 ℃ to 120 ℃. In addition, the intelligent gasket 1 can be repeatedly used, is convenient to replace and maintain, and reduces the operation and maintenance cost of the fan; the bolt fastening state is effectively monitored, and meanwhile, the bolt fastening state monitoring device has a certain anti-loosening function.
The monitoring mode of intelligence packing ring 1 is passive monitoring by nature, can realize treating the real-time supervision of monitoring the bolt elasticity state, can monitor under the adverse circumstances or the artifical inconvenient bolt elasticity state of monitoring the position, and it is extensive to be suitable for the operating mode.
The acquisition terminal 2 mainly performs cyclic acquisition, processing and transmission on the voltage signal of the intelligent gasket 1. One acquisition terminal 2 can be simultaneously crosslinked with 8 intelligent gaskets 1, and the acquisition terminal 2 is connected with 8 intelligent gaskets through a two-wire system. Specifically, the collecting terminal 1 collects the voltage signal of each intelligent gasket 1, converts the voltage signal into a digital quantity, and sends the digital quantity to the processing terminal 3. In addition, the acquisition terminal 2 also provides power for the circuits in the monitoring sheet 14 of the intelligent gasket 1. As shown in fig. 4, as a specific embodiment, the collection terminal 2 may adopt a collection box of SCQ-1 type, the length, width, and height of the collection box are 252mm 210mm 47mm, the collection box includes a battery, a collector and a wireless transmitter, and the collector is responsible for collecting the voltage signal of the intelligent gasket 1 and converting the voltage signal into a digital quantity; the radio transmitter is responsible for transmitting the digital quantity to the processing terminal 3.
The processing terminal 3 and the acquisition terminal 2 are in wireless connection, and one processing terminal 3 can be simultaneously connected with 8 acquisition terminals 2. The processing terminal 3 mainly performs processing such as error correction, recovery, packaging and the like on the digital quantity input by the acquisition terminal 2 to form a digital signal, and then transmits the digital signal to the server 4 through the mobile signal. As shown in fig. 5, as a specific embodiment, the processing terminal 3 may adopt an SJQ-1 model, and the size of length, width, and height is 252mm, 210mm, and 47mm, the processing terminal 3 includes a power supply, a processing module, and a communication module, and the processing module is responsible for processing received digital quantity, such as error correction, recovery, and packaging, to form a digital signal; the communication module is responsible for transmitting the digital signal to the server 4 through the mobile signal.
The acquisition terminal 2 and the processing terminal 3 are small in size, light in weight, low in power consumption (electric power is less than 0.2w) and wide in power supply range (direct-current voltage is 5v-48 v).
Fig. 6 is a diagram of a background login interface of a server according to the present invention. As shown in fig. 6, the server 4 stores the position information of the fan bolt to be monitored, where the position information includes an area where the fan bolt to be monitored is located, a wind field, a fan number, and a specific position on the fan. The server 4 receives the digital signal transmitted by the processing terminal 3, and performs logic judgment on the digital signal to form a bolt connection state judgment result; and the judgment result of the bolt connection state is whether the bolt of the fan to be monitored is loosened. And the server sends the position information of the fan bolt to be monitored and the corresponding bolt connection state judgment result to the APP client. In addition, when the bolt loosening is abnormal as a result of judging the bolt connection state, the server 4 can send the position information of the fault loosened bolt to a mobile phone of a maintenance worker in time through short messages, so that the maintenance worker can repair the fault bolt in time.
FIG. 7 is an APP client interface diagram provided by the present invention. As shown in fig. 7, the APP client 5 is configured to display position information of the fan bolt to be monitored and a corresponding bolt connection state determination result. Specifically, "fan failure alarm system" APP customer end 5 is the customer end specially developed for intelligent fan bolt online health monitoring system, and wherein this APP customer end 5 is including withdrawing from functional interfaces such as login, wind field list, search screening, alarm list, warning detail, and maintainer can seek the health status of the fan bolt in oneself jurisdiction at any time and any place through APP customer end 5, gets rid of the latent potential safety hazard of fan, in time handles the trouble problem, reduces the fortune dimension cost of fan.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
(1) the structure is exquisite, and the reliability is high. The connection state of the bolt is fed back by monitoring the change of the internal circuit voltage of the intelligent gasket; the intelligent gasket can realize treating the point-to-point monitoring of monitoring bolt, sends out alarm information when treating that monitoring bolt appears becoming flexible, reduces the major accident that the blade that leads to because of the bolt is not flexible drops, has improved monitoring system's reliability.
(2) The sensitivity is high. The elastic layer of the intelligent gasket is made of metal materials, so that the contact can be effectively separated from the contact column, and the sensitivity of the monitoring system is improved.
(3) The operation and maintenance cost of the fan bolt monitoring is low. The intelligent gasket can be reused, and the real-time feedback of the connection state of the bolt can be realized. The operation and maintenance personnel can check the bolt connection state at the APP client at any time and any place, potential safety hazards of the fan are eliminated, and therefore operation and maintenance workload of the fan is reduced.
(4) And the environmental adaptability is strong. The used materials and devices have strong environmental adaptability and can normally work in the temperature environment of-70 ℃ to 120 ℃.
(5) The field construction and installation are convenient, and the application range is wide. The acquisition terminal and the processing terminal adopt wireless transmission communication, and the acquisition terminal is connected with the intelligent gasket through a short line. Therefore, the system can monitor the rotating part of the mechanical structure, is not limited by wired connection, and has wide engineering application.
(6) Low cost, strong universality and certain anti-loose function. Compared with a grating type, piezoelectric sensing type or resistance strain gauge type intelligent fastener, the intelligent gasket is low in cost, convenient to replace and maintain, and capable of effectively monitoring the tightness state of a bolt and also having a certain anti-loosening function.
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 principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The utility model provides an online health monitoring system of intelligence fan bolt which characterized in that includes: the system comprises an intelligent gasket, an acquisition terminal, a processing terminal, a server and an APP client;
the intelligent washer is arranged between a nut of the fan bolt to be monitored and the fan main body structure; the intelligent gasket comprises an upper metal sheet, a plurality of contact columns, an elastic layer, a monitoring sheet and a lower metal sheet; the contact pillars are positioned on one side of the upper metal sheet close to the lower metal sheet; the elastic layer comprises a plurality of metal springs, and the metal springs penetrate through the contact posts; a plurality of contacts are arranged on the monitoring sheet, and the positions of the contacts correspond to the positions of the contact columns one by one; one side of the monitoring sheet, which is provided with the contact, can be in contact with the contact column; the lower metal sheet is positioned on the non-contact side of the monitoring sheet; the metal upper sheet is jointed with the metal lower sheet;
the monitoring sheet of the intelligent gasket is electrically connected with the acquisition terminal through a lead; the acquisition terminal is wirelessly connected with the processing terminal; the processing terminal and the APP client are respectively connected with the server through a mobile network.
2. The intelligent fan bolt online health monitoring system of claim 1, wherein the number of contact posts is 1-1000; the length of the contact column is 1mm-100 mm; the contact column is cylindrical or polygonal column.
3. The intelligent fan bolt online health monitoring system of claim 1, wherein the intelligent washer has an inner diameter of 1mm-1000 mm; the outer diameter of the intelligent gasket is 1mm-2000 mm; the thickness of the intelligent gasket is 2mm-20 mm.
4. The intelligent fan bolt online health monitoring system of claim 1, wherein the inner diameter of the metal upper piece is less than or equal to the inner diameter of the monitoring piece; the outer diameter of the metal upper sheet is larger than or equal to that of the monitoring sheet; the outer diameter of the upper metal sheet is smaller than or equal to that of the lower metal sheet.
5. The intelligent fan bolt online health monitoring system of claim 1, wherein the shape of the metal lower sheet is a bottle cap type.
6. The intelligent fan bolt online health monitoring system of claim 1, wherein the acquisition terminal is electrically connected with 8 intelligent washers simultaneously through a wire; the acquisition terminal acquires the voltage signal output by the intelligent gasket, converts the voltage signal into digital quantity and sends the digital quantity to the processing terminal; and the processing terminal performs error correction, recovery and packaging processing on the digital quantity input by the acquisition terminal to form a digital signal, and remotely transmits the digital signal to the server through a mobile network.
7. The intelligent online health monitoring system for the fan bolts as recited in claim 1, wherein the server stores position information of the fan bolts to be monitored, the position information including areas where the fan bolts are located, wind fields, fan numbers and specific positions on the fans; the server receives the digital signal transmitted by the processing terminal and performs logic judgment on the digital signal to form a bolt connection state judgment result; and the server sends the position information of the fan bolt to be monitored and the corresponding bolt connection state judgment result to the APP client.
8. The intelligent fan bolt online health monitoring system of claim 1, wherein the APP client is configured to display position information of the fan bolt to be monitored and a corresponding bolt connection state judgment result.
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| CN202210166189.6A CN114719888A (en) | 2022-02-23 | 2022-02-23 | Intelligent fan bolt online health monitoring system |
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| CN202210166189.6A CN114719888A (en) | 2022-02-23 | 2022-02-23 | Intelligent fan bolt online health monitoring system |
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| CN212871574U (en) * | 2020-09-21 | 2021-04-02 | 国家电网有限公司 | Hydraulic turbine top cover bolt looseness monitoring system |
| CN213936233U (en) * | 2020-11-06 | 2021-08-10 | 湖南科技大学 | A piezoelectric fiber intelligence gasket for monitoring of bolt is not hard up |
| CN113532720A (en) * | 2021-07-06 | 2021-10-22 | 西安烯格赛斯科技合伙企业(有限合伙) | Intelligent washer with anti-loosening function and used for monitoring bolt fastening state and monitoring method |
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