CN109989991B - Multi-rib multi-induction bolt gasket - Google Patents
Multi-rib multi-induction bolt gasket Download PDFInfo
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- CN109989991B CN109989991B CN201910194451.6A CN201910194451A CN109989991B CN 109989991 B CN109989991 B CN 109989991B CN 201910194451 A CN201910194451 A CN 201910194451A CN 109989991 B CN109989991 B CN 109989991B
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- gasket
- bottom plate
- rib
- main body
- sensor
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- 230000008859 change Effects 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 29
- 238000013022 venting Methods 0.000 abstract description 22
- 238000001514 detection method Methods 0.000 abstract description 19
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
-
- 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
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gasket Seals (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a multi-rib multi-induction bolt gasket which comprises a gasket main body and a central through hole, wherein a gasket bottom plate is sleeved on the inner side of the gasket main body, a positioning clamping groove is formed in the inner side surface of the gasket main body, a flange is arranged on the gasket bottom plate, the flange is matched and sleeved with the positioning clamping groove, a sensor assembly groove is formed in the inner side of the gasket main body, and an MEMS pressure sensor is arranged in the sensor assembly groove. After the explosion venting wall gasket part is replaced by the gasket, the pressure-bearing change condition of the explosion venting wall can be displayed and recorded, and alarm information can be provided after the pressure change reaches the critical degree. The invention can also provide dynamic data support for the detection of the multi-rib explosion venting gasket, thereby providing assistance for the definition and detection of different levels of the multi-rib explosion venting gasket.
Description
Technical Field
The invention relates to structural engineering of buildings, bridge dams, slopes, mines, rock masses, high-rise structures, large venues and the like, in particular to a safety defense gasket technology for the field of steel structural engineering, and particularly relates to a multi-rib multi-induction bolt gasket capable of collecting deformation of a connecting point of an acting surface and environmental information around the connecting point in real time and a method for collecting data in real time and accurately monitoring structural deformation and stress strain cloud pictures.
Background
At present, connecting bolts are commonly used for fixing important parts in many fields such as steel structure constructional engineering of buildings, bridge dams, slopes, mines, rock masses, high-rise structures, large-scale venues and the like, and meanwhile, sensors and the like are adopted at proper positions of the key parts for state monitoring. For example, after the steel structure combined member is connected through bolts, the stability of the bolting member can be influenced by the problems of equipment, materials, connection strength difference and other factors, and the mechanical properties of the steel structure can be adversely affected. For the steel structure of a super high-rise large complex building, no matter in the construction process or in the finishing later period, the main body unit needs to be monitored item by item frequently, when a detector holds a detection instrument for detection, the detection is often missed, so that detection is avoided, multiple times of detection is needed during detection, the detection efficiency is low, and the detector holds the detection instrument for a long time, so that the working strength of the detector is increased. In particular, the on-line monitoring of the actual defects of the steel structure connection of the super high-rise building still has considerable difficulty, the detection and the identification are time-consuming and labor-consuming, the identification precision is low, the accuracy is poor, the detection efficiency is low, and the detection result is only the surface test result. At present, a displacement sensor is arranged at a key part of a steel structure in a more common mode for monitoring deformation information of the key part in real time, but the arrangement mode and the arrangement density of the sensor cannot be used for comprehensively and real-time monitoring the whole building structure, some neglected slight changes can cause serious unbalanced stress and even disaster consequences, and the existing mode of arranging the sensor is only attached to a construction surface for displacement monitoring or local pressure monitoring and cannot participate in bearing parts of connection of each construction strength. A comparison technology is to use the intelligent coating sensor to monitor the steel structure in real time, can monitor the steel member surface in real time comprehensively, but is usually applied to the monitoring of bolting cracks, its principle is to utilize the principle that the crack generation of the steel structure can lead to the resistance change of its coating to detect the beginning and expansion width of the crack, implement on-line real-time monitoring through the Internet, avoid the emergence of the phenomenon of missing and examine, this technology can not be used for the monitoring of the connection relation of the main body member and have this function, because the intelligent coating can not participate in each and construct the connection position bearing force, so can not monitor effectively to the stress deformation condition of initiation and expansion between the connection construction.
Disclosure of Invention
The invention provides a multi-rib multi-induction bolt gasket which is applied between connecting members and participates in bearing of the connecting members, aiming at the problems that the prior art cannot effectively monitor the possible sprouting and expanding stress deformation conditions between the connecting members in real time and the existing monitoring means cannot participate in each part of the connecting members when large-scale construction connection is carried out in the fields of building engineering of steel structures such as buildings, bridge dams, slopes, mines, rock masses, high-rise structures, large-scale venues and the like.
The technical scheme adopted for achieving the purpose of the invention is that the multi-rib multi-induction bolt gasket comprises a gasket main body and a central perforation, wherein a gasket bottom plate is overlapped on the inner side surface of the gasket main body in parallel, a positioning clamping groove is formed in the inner side surface of the gasket main body, a flange is arranged on the gasket bottom plate and is matched and sleeved with the positioning clamping groove, so that the gasket bottom plate and the gasket main body can only axially approach and separate, a plurality of sensor assembly grooves are uniformly distributed around the central perforation on the inner side surface of the gasket main body, MEMS pressure sensors, temperature sensors and humidity sensors are respectively arranged in the sensor assembly grooves, the sensors are connected with a monitoring system through signal wires, a power wire of each sensor is connected with a power module, and a contact of each MEMS pressure sensor is contacted with the inner side surface of the gasket bottom plate. MEMS pressure sensors are thin film elements that deform when subjected to pressure. Such deformation may be measured by strain gauges (piezoresistive sensing) or by capacitive sensing of the change in distance between the two faces.
Further, an annular boss is outwards protruded on the outer side surface of the center hole of the gasket main body, and a plurality of radially outwards-distributed reinforcing ribs are uniformly distributed on the outer edge of the annular boss.
Further, after the flange is matched and sleeved with the positioning clamping groove, a broadside for preventing the flange from falling out of the positioning clamping groove is arranged on the inner side of the flange, and a spring piece is sleeved in the positioning clamping groove on the inner side of the broadside.
Further, circumferential clamping tables are circumferentially distributed on the inner side surface of the gasket bottom plate, and the outer diameter of each circumferential clamping table is equal to the inner diameter of the center perforation.
The invention has the beneficial effects that: after part of bolt gaskets or all of the bolt gaskets of the structure connecting surface are replaced by the multi-rib multi-induction bolt gaskets, the stress change condition of the pressure-bearing structure can be monitored, displayed and recorded, and alarm information can be provided after the pressure change reaches the critical degree. And acquiring data in real time and accurately monitoring the structural deformation and stress strain cloud picture.
The multi-rib multi-induction bolt gasket provided by the invention directly participates in the connecting part of the structure as a bearing part, directly participates in the stress of the structure, can deeply understand the tiny change of the connecting part, detects the starting and expansion degree of adverse stress of the gasket caused by local deformation, and can effectively implement online real-time monitoring through the Internet. The invention can distribute the gaskets on each connecting part of the main body member, thereby realizing comprehensive and accurate distribution, avoiding the occurrence of the omission phenomenon, realizing stability, comprehensiveness and effectiveness of detection, realizing automatic monitoring, having obvious advantages when being applied to the connection monitoring of the steel structure of the building, and realizing real-time monitoring and monitoring of crack initiation and expansion conditions before and after the crack of the steel structure member. The gasket is used for supporting instead of a common gasket, so that the most direct stress condition can be obtained, and the existing sensor detection equipment generally does not have the function.
According to the invention, whether the change of the temperature and humidity environment (the stress change of the joint is influenced by the factors such as cold and hot expansion) around the gasket is in a specified range can be determined, so that accurate monitoring and early warning can be performed.
The invention can also be suitable for detecting the sealing pressure of container products with gradually increased internal pressure. The number of the reinforcing ribs on the back of the gasket body is changed to change the anti-explosion strength and control different explosion venting grades.
The invention has the main function of providing dynamic data support for the detection of the multi-rib explosion venting gasket, thereby providing assistance for the definition and detection of different levels of the multi-rib explosion venting gasket. The explosion venting gasket and the common multi-rib pressure venting gasket with the same level are directly assembled on the pressure venting wall for fixing, and meanwhile, dynamic data record can be provided for detecting the common multi-rib explosion venting gasket, so that the truest and effective detection data can be provided for different levels of the multi-rib explosion venting gasket for defining and determining.
Drawings
FIG. 1 is a schematic cross-sectional view of a multi-ribbed multi-sensing bolt gasket of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a right side view of fig. 1.
Reference numerals in the drawings: 1 is a gasket body, 2 is a sensor assembly groove, 3 is a positioning clamping groove, 4 is a central through hole, 5 is a reinforcing rib, 6 is a caulking groove, 7 is a gasket base plate, 8 is a flange, 91 is an MEMS pressure sensor, 92 is a temperature sensor, 93 is a humidity sensor, 10 is a sensor contact, 11 is a bolt body, 12 is a bolt cap, 13 is a lock nut, 14 is an inner gasket, and 15 is a power signal wire harness.
Detailed Description
Example 1: a multi-rib multi-induction bolt gasket capable of collecting deformation of a connecting point of an acting surface and information of surrounding environments of the connecting point in real time can be used for replacing part of bolt gaskets or all of the bolt gaskets with structural connecting surfaces so as to monitor, display and record stress change conditions of a pressure-bearing structure and provide alarm information after the pressure changes to a critical degree. And further realizing the functions of collecting data in real time and accurately monitoring structural deformation and stress-strain cloud pictures. As shown in fig. 1, the explosion venting gasket includes a gasket body 1, a gasket base plate 7, and a sensor group including a MEMS pressure sensor 91, a temperature sensor 92, and a humidity sensor 93.MEMS pressure sensors are thin film elements that deform when subjected to pressure. Such deformation may be measured by strain gauges (piezoresistive sensing) or by capacitive sensing of the change in distance between the two faces. As shown in fig. 1 and 2, a gasket bottom plate 7 is sleeved on the inner side of the gasket body 1, a positioning clamping groove 3 is formed in the inner side surface of the gasket body 1, a flange 8 is arranged on the gasket bottom plate 7, and the flange 8 is matched with the positioning clamping groove 3 in a sleeved mode. In this embodiment, the caulking groove 6 is provided on the inner side of the gasket body 1, and the gasket base plate 7 is embedded in the caulking groove 6, so that the gasket base plate 7 is further restrained, and the gasket base plate 7 is prevented from sliding relative to the gasket body 1. In this embodiment, preferably, after the flange 8 is matched with the positioning slot 3, a wide edge for preventing the positioning slot 3 from being separated from the flange 8 is provided on the inner side of the flange 8, and the width of the notch of the positioning slot 3 is smaller than the width of the wide edge. A spring plate is sleeved in the positioning clamping groove 3 at the inner side of the broadside. The purpose of this design is to keep the gasket base plate 7 always in clearance with the gasket body 1, and when the bolt body 11 is inserted into the central through hole 4 of the gasket body 1 and the gasket base plate 7, the bolt cap 12 and the lock nut 13 provide a large tightening force, the gasket base plate 7 is only moved closer to the gasket body 1. The inner gasket 14 in fig. 1 is a conventional gasket.
As shown in fig. 1 and 2, a sensor assembly groove 2 is further provided inside the gasket body 1, in which MEMS pressure sensors 91 are installed, and in fig. 2, three sensor assembly grooves 2 are uniformly distributed, or only one or two sensor assembly grooves 2 may be provided all the time and the corresponding MEMS pressure sensors 91 may be installed in a matching manner. The MEMS pressure sensor 91 is connected to a control system through a signal harness 15, and the control system is used for providing display and recording of pressure-bearing change conditions of the explosion venting wall, and when the pressure relief gasket is used for detecting the sealing pressure of container products with gradually increased internal pressure, the controller provides alarm information after detecting that the internal pressure of the pressure container is changed to a critical degree. Wherein the sensor contact 10 of the MEMS pressure sensor 91 is in contact with the inner side of the spacer chassis 7. In normal conditions, the spring action causes the MEMS pressure sensor 9 to not provide a pressure signal.
The novel multi-rib induction gasket directly participates in structural stress, and return data of the novel multi-rib induction gasket are functions of the positions of all stress points Mi (x, y, z) in space, the time ti of bearing capacity Fi and a plurality of sensor parameters Vi, so that a space real-time data network is formed for calculation, and a stress strain cloud picture is formed.
Example 2: on the basis of the embodiment 1, an annular boss is outwards protruded from the outer side surface of the central through hole 4 of the gasket body 1, and as shown in fig. 3, a plurality of radially outwards-distributed reinforcing ribs 5 are uniformly distributed on the outer edge of the annular boss. The pressure relief gasket of the embodiment can be used for distinguishing explosion relief grades according to the number of the reinforcing ribs 5 on the back of the pressure relief gasket, so that the explosion relief direction and the explosion relief area of the explosion relief wall can be selectively controlled, the optimal explosion relief purpose is achieved, the controllability of explosion is realized, and the explosion hazard is reduced to the minimum.
The common multi-rib explosion venting gasket without the MEMS pressure sensor can accurately control the explosion venting capacity according to the different quantity of the reinforcing ribs 5, provide a reliable explosion venting function, realize the controllability of explosion and achieve the optimal explosion venting purpose. When the on-site explosion venting function test is carried out on the common multi-rib pressure relief gasket, the explosion venting gasket and the common multi-rib pressure relief gasket at the same level are directly assembled on the pressure relief wall for fixing, and meanwhile, dynamic data record can be provided for detecting the common multi-rib explosion venting gasket, so that the truest and effective detection data are provided for defining and determining different levels of the multi-rib explosion venting gasket.
Claims (1)
1. The multi-rib multi-induction bolt gasket comprises a gasket main body and a central through hole, and is characterized in that the stress change condition of a pressure-bearing structure is monitored, displayed and recorded, alarm information is provided after the pressure change reaches a critical degree, the deformation of a connecting point of an acting surface and the environmental information around the connecting point are collected in real time; the inner side surface of the gasket body is provided with a positioning clamping groove, the gasket bottom plate is provided with a flange which is matched and sleeved with the positioning clamping groove, so that the gasket bottom plate and the gasket body can only axially approach and depart from each other, a plurality of sensor assembly grooves are uniformly distributed around the central perforation on the inner side surface of the gasket body, MEMS pressure sensors, temperature sensors and humidity sensors are respectively installed in the sensor assembly grooves, each sensor is connected with a monitoring system through a signal wire, a power wire of each sensor is connected with a power module, and a contact of each MEMS pressure sensor is contacted with the inner side surface of the gasket bottom plate; an annular boss is outwards protruded from the outer side surface of the center hole of the gasket main body, and a plurality of radially outwards-distributed reinforcing ribs are uniformly distributed on the outer edge of the annular boss; after the flange is matched and sleeved with the positioning clamping groove, the inner side of the flange is provided with a broadside which is prevented from falling out of the positioning clamping groove, and a spring sheet is sleeved in the positioning clamping groove at the inner side of the broadside; keeping a gap between the gasket bottom plate and the gasket main body all the time, and enabling the gasket bottom plate to approach the gasket main body only when the bolt cap body and the locking nut provide larger tensioning force after the bolt body is inserted into the center through holes of the gasket main body and the gasket bottom plate; circumferential clamping tables are circumferentially distributed on the inner side surface of the gasket bottom plate, and the outer diameter of each circumferential clamping table is equal to the inner diameter of the central perforation; under the normal state, the spring plate acts to enable the MEMS pressure sensor not to provide pressure signals, the rib induction gasket directly participates in structural stress, and return data of the rib induction gasket are functions of the Mi (x, y, z) position of each stress point in space, the Fi time ti of bearing capacity and a plurality of sensor parameters Vi, so that a space real-time data network is formed for calculation to form a stress strain cloud picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194451.6A CN109989991B (en) | 2019-03-14 | 2019-03-14 | Multi-rib multi-induction bolt gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194451.6A CN109989991B (en) | 2019-03-14 | 2019-03-14 | Multi-rib multi-induction bolt gasket |
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| Publication Number | Publication Date |
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| CN109989991A CN109989991A (en) | 2019-07-09 |
| CN109989991B true CN109989991B (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910194451.6A Active CN109989991B (en) | 2019-03-14 | 2019-03-14 | Multi-rib multi-induction bolt gasket |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110243505A (en) * | 2019-07-10 | 2019-09-17 | 法施达科技有限公司 | A kind of pressure sensor washer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5581019A (en) * | 1992-07-16 | 1996-12-03 | W. L. Gore & Associates, Inc. | Gasket/insertable member and method for making and using same |
| CN102080726A (en) * | 2011-02-01 | 2011-06-01 | 宁波天生密封件有限公司 | Intelligent controlled sealing gasket |
| CN104806761A (en) * | 2015-03-16 | 2015-07-29 | 武汉理工大学 | Fiber bragg grating sensor based intelligent flange gasket |
| CN210344006U (en) * | 2019-03-14 | 2020-04-17 | 华北水利水电大学 | Multi-rib multi-induction bolt gasket |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7009409B2 (en) * | 2001-08-10 | 2006-03-07 | Davie Neil R | Determination of gasket integrity by capacitance measurement |
| US7008158B2 (en) * | 2004-02-05 | 2006-03-07 | Madden Iii James William | Bolt or nut locking fastener and fastening system |
| US7698949B2 (en) * | 2005-09-09 | 2010-04-20 | The Boeing Company | Active washers for monitoring bolted joints |
| US20070193361A1 (en) * | 2006-02-20 | 2007-08-23 | Davie/Coffee Technologies, LLC | Compressive load sensor by capacitive measurement |
-
2019
- 2019-03-14 CN CN201910194451.6A patent/CN109989991B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5581019A (en) * | 1992-07-16 | 1996-12-03 | W. L. Gore & Associates, Inc. | Gasket/insertable member and method for making and using same |
| CN102080726A (en) * | 2011-02-01 | 2011-06-01 | 宁波天生密封件有限公司 | Intelligent controlled sealing gasket |
| CN104806761A (en) * | 2015-03-16 | 2015-07-29 | 武汉理工大学 | Fiber bragg grating sensor based intelligent flange gasket |
| CN210344006U (en) * | 2019-03-14 | 2020-04-17 | 华北水利水电大学 | Multi-rib multi-induction bolt gasket |
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| CN109989991A (en) | 2019-07-09 |
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