CN113238023A - Device for safety monitoring and early warning of positive arch rupture disk - Google Patents
Device for safety monitoring and early warning of positive arch rupture disk Download PDFInfo
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- CN113238023A CN113238023A CN202110573712.2A CN202110573712A CN113238023A CN 113238023 A CN113238023 A CN 113238023A CN 202110573712 A CN202110573712 A CN 202110573712A CN 113238023 A CN113238023 A CN 113238023A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 239000013307 optical fiber Substances 0.000 claims abstract description 35
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000005236 sound signal Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/227—Explosives, e.g. combustive properties thereof
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- Combustion & Propulsion (AREA)
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- Safety Valves (AREA)
Abstract
The invention provides a device for safety monitoring and early warning of a positive arch type rupture disk, which comprises an air containing cavity, wherein the opening of the air containing cavity is provided with the rupture disk in the shape of a positive arch, an air inlet of the air containing cavity is communicated with an air bottle through a pipeline, and the pipeline is provided with a pressure reducing valve and a stop valve I; a stop valve II is arranged at the air outlet of the air containing cavity; the outer surface of the rupture disk is pasted with an optical fiber and a piezoelectric ceramic piece, the optical fiber is connected with a control system through an optical fiber grating demodulator, and the piezoelectric ceramic piece is connected with the control system through an acoustic emission signal preamplifier. The invention can monitor the deformation of the rupture disk through the optical fiber. The sound in the deformation process of the rupture disk is monitored through the piezoelectric ceramic plate, and the variable quantity of the rupture disk is monitored through the sound.
Description
Technical Field
The invention relates to the technical field of rupture disk detection, in particular to a device for safety monitoring and early warning of a positive arch rupture disk.
Background
Rupture discs are one type of overpressure relief device that is widely used in pressure vessels. In recent years, relevant laws and standards at home and abroad are made, and a basis is provided for scientific use of the rupture disk. However, practice has found that the rupture disk has early failure behavior of rupture under lower pressure, which brings hidden trouble to normal process operation. In addition, although standards specify that rupture discs are replaced after a certain period of use, even if no rupture occurs, there is still no scientific basis for when to replace them.
Although some scholars monitor and research rupture discs, a novel detection device suitable for the state of the arch-shaped metal rupture disc is designed and invented. However, the device has certain limitation, namely, the device cannot remind an operator to replace the rupture disk through early-stage failure signal early warning. In addition, some monitoring equipment is bulky, which causes a limit to the applicable range.
Disclosure of Invention
According to the technical problem, the device for the safety monitoring and early warning of the positive arch type rupture disk is provided. As a technology widely used in the field of structure monitoring, an optical fiber and an acoustic emission system are widely used in the fields of petrochemical engineering, civil engineering, electrical engineering, medical science, aerospace, and the like. Therefore, if the two technologies can be applied to safety monitoring of the rupture disk, the rupture disk can be obviously guaranteed for safe use.
The invention adopts two monitoring means of optical fiber and acoustic emission to carry out on-line safety monitoring on the positive arch rupture disk. Tests show that the optical fiber and the acoustic emission can be used for carrying out online safety monitoring on the positive arch rupture disk. The safety state of the rupture disk is judged by monitoring the change of the optical fiber and the acoustic signal in the process.
The technical means adopted by the invention are as follows:
a device for safety monitoring and early warning of a positive arch type rupture disk comprises an air containing cavity, wherein the opening of the air containing cavity is provided with the positive arch type rupture disk, an air inlet of the air containing cavity is communicated with an air bottle through a pipeline, and the pipeline is provided with a pressure reducing valve and a stop valve I; a stop valve II is arranged at the air outlet of the air containing cavity;
the outer surface of the rupture disk is pasted with an optical fiber and a piezoelectric ceramic piece, the optical fiber is connected with a control system through an optical fiber grating demodulator, and the piezoelectric ceramic piece is connected with the control system through an acoustic emission signal preamplifier. The optical fiber and the rupture disk deform synchronously in the deformation process, the fiber grating demodulator displays the deformation of the optical fiber, and the control system displays the strain value of the deformation in real time; the piezoelectric ceramic piece monitors the sound signal emitted by the rupture disk in the deformation process of the rupture disk, the acoustic emission signal preamplifier collects and amplifies the sound signal, and the control system displays the size of the sound signal in real time.
The rupture disk is a positive arch groove-type rupture disk, and the optical fiber is arranged in the groove.
Or the rupture disk is a positive arch slotted rupture disk, and the optical fiber is arranged at the hole bridge.
And a pressure gauge is arranged on the pipeline between the stop valve I and the air containing cavity.
The air containing cavity is formed by two flanges, and the rupture disk is fixed between the two flanges in a sealing mode.
In the use state: the rupture disk is arranged at the opening of the air accommodating cavity, and the optical fiber and the piezoelectric ceramic chip are adhered to the front surface of the rupture disk. And screwing down the stop valve II, opening a gas cylinder switch, rotating a reducing valve, pressurizing at equal gradient every time, receiving and recording a generated signal by a control system, and maintaining the pressure for a period of time after the pressurization is completed every time. When the rupture disk deforms, the optical fiber deforms synchronously, the generated deformation amount is displayed through the fiber grating demodulator, and the control system obtains the magnitude of the strain value according to the deformation amount. Meanwhile, the piezoelectric ceramic piece arranged on the surface of the rupture disk can transmit an acoustic signal released when the inner metal cracks in the deformation process of the rupture disk, and the crack acoustic signal can be amplified by an acoustic signal preamplifier in the later stage. The acoustic emission signal preamplifier collects and amplifies the acoustic signal, and the control system displays the size of the acoustic signal in real time.
And when the acoustic signal signals collected by the acoustic emission signal preamplifier are densely appeared and are greatly protruded or exceed the decibel of the acoustic signal sent out when the preset rupture disk is broken, the control system sends out an early warning signal.
And when the central wavelength of the fiber grating is suddenly crossed or the optical fiber fails in monitoring, the control system sends out a corresponding early warning signal.
The model of the fiber grating demodulator is as follows: FT 210-16.
Acoustic emission preamplifier model: r3 α.
The control system model is as follows: Micro-II Digital AE system.
Compared with the prior art, the invention has the following advantages:
1. the structure is small and exquisite, the installation of being convenient for.
2. The deformation of the rupture disk can be monitored through the optical fiber.
3. Can pass through the sound of piezoceramics piece monitoring rupture disk deformation in-process to monitor its variable quantity through the sound.
4. The user can be reminded to replace the rupture disk in time by early warning.
For the reasons, the invention can be widely popularized in the fields of rupture discs and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for safety monitoring and early warning of a positive arch rupture disk according to the present invention.
Fig. 2 is a schematic structural view of a conventional positive-arch rupture disk in accordance with an embodiment of the present invention.
Fig. 3 is a sectional view taken along line a-a in fig. 2.
Fig. 4 is a schematic structural view of a positive arch groove type rupture disk in an embodiment of the invention.
Fig. 5 is a sectional view taken along line B-B in fig. 4.
Fig. 6 is a schematic structural view of a positive arch slotted rupture disk in an embodiment of the present invention.
Fig. 7 is a sectional view taken along line C-C in fig. 6.
Fig. 8 is a sectional view taken along line D-D in fig. 6.
Fig. 9 is a diagram of signals monitored by an optical fiber and a piezoceramic wafer in accordance with an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1 to 9, a device for monitoring and warning the safety of a positive arch rupture disk comprises an air containing cavity 1, wherein a positive arch rupture disk 2 is installed at an opening of the air containing cavity 1, an air inlet of the air containing cavity 1 is communicated with an air bottle 3 through a pipeline, and a pressure reducing valve 4 and a stop valve I5 are arranged on the pipeline; a stop valve II 6 is arranged at the air outlet of the air containing cavity 1;
the outer surface of the rupture disk 2 is pasted with an optical fiber 7 and a piezoelectric ceramic piece 8, the optical fiber 7 is connected with a control system 10 through an optical fiber grating demodulator 9, and the piezoelectric ceramic piece 8 is connected with the control system 10 through an acoustic emission signal preamplifier 11. The optical fiber 7 and the rupture disk 2 deform synchronously in the deformation process, the optical fiber regulator 9 displays the deformation of the optical fiber 7, and the control system 10 displays the strain value of the deformation in real time; the piezoelectric ceramic piece 8 monitors the sound signal emitted by the rupture disk 2 in the deformation process of the rupture disk 2, the sound signal is collected by the sound emission signal preamplifier 11, and the control system 10 displays the size of the sound signal in real time.
The rupture disk 2 is a conventional normal arch rupture disk, as shown in fig. 2;
or the rupture disk 2 is a positive arch groove type rupture disk, as shown in fig. 4, and the optical fiber is arranged in the groove.
Or the rupture disk 2 is a positive arch slotted rupture disk, as shown in fig. 6.
And a pressure gauge 12 is arranged between the stop valve I5 and the air containing cavity 1 on the pipeline.
The air containing cavity 1 is formed by two flanges, namely an upper flange 13 and a lower flange 14, and the rupture disk 2 is hermetically fixed between the two flanges.
In the use state: the rupture disk 2 is arranged at the opening of the air containing cavity 1, and the optical fiber 7 and the piezoelectric ceramic piece 8 are stuck on the front surface of the rupture disk 2. Screwing the stop valve II 6, opening a gas cylinder switch, opening the stop valve I5, rotating the reducing valve 4, pressurizing at equal gradient every time, receiving and recording a generated signal by the control system 10, and maintaining the pressure for a period of time after the pressurization is completed every time. When the rupture disk 2 deforms, the optical fiber 7 deforms synchronously, the generated deformation amount is displayed through the fiber grating demodulator 9, and the control system 10 obtains the magnitude of the strain value according to the deformation amount. Meanwhile, the piezoelectric ceramic piece 8 arranged on the surface of the rupture disk 2 can transmit an acoustic signal released when the inner metal cracks in the deformation process of the rupture disk, and the crack acoustic signal can be amplified in the later stage through an acoustic signal preamplifier. The acoustic emission signal preamplifier 11 collects the acoustic signal, and the control system 10 displays the size of the acoustic signal in real time.
When the acoustic emission signals collected by the acoustic emission signal preamplifier 11 are densely present and largely burst or exceed decibels of acoustic signals emitted when the preset rupture disk 2 is ruptured, as shown in fig. 9, when the acoustic emission signals exceed 75dB (the rupture disk 2 is a conventional positive arch rupture disk), the control system 10 emits an early warning signal.
When the grating center wavelength of the optical fiber 7 is suddenly crossed or the optical fiber fails in monitoring, the control system 10 sends out a corresponding early warning signal.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A device for safety monitoring and early warning of a positive arch type rupture disk is characterized by comprising an air containing cavity, wherein the opening of the air containing cavity is provided with the rupture disk in a positive arch shape, an air inlet of the air containing cavity is communicated with an air cylinder through a pipeline, and the pipeline is provided with a pressure reducing valve and a stop valve I; a stop valve II is arranged at the air outlet of the air containing cavity;
the outer surface of the rupture disk is pasted with an optical fiber and a piezoelectric ceramic piece, the optical fiber is connected with a control system through an optical fiber grating demodulator, and the piezoelectric ceramic piece is connected with the control system through an acoustic emission signal preamplifier.
2. The device for safety monitoring and warning of a positive arch rupture disk as claimed in claim 1, wherein the rupture disk is a positive arch slotted rupture disk, and the optical fiber is disposed in the slot.
3. The device for safety monitoring and warning of a positive arch rupture disk as claimed in claim 1, wherein the rupture disk is a positive arch slotted rupture disk.
4. The device for the safety monitoring and early warning of the positive arch type rupture disk as claimed in claim 1, wherein a pressure gauge is arranged on the pipeline between the stop valve I and the air containing cavity.
5. A safety monitoring and early warning device for a positive camber rupture disk as claimed in claim 1, wherein the air containing cavity is formed by two flanges, and the rupture disk is fixed between the two flanges in a sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110573712.2A CN113238023A (en) | 2021-05-25 | 2021-05-25 | Device for safety monitoring and early warning of positive arch rupture disk |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110573712.2A CN113238023A (en) | 2021-05-25 | 2021-05-25 | Device for safety monitoring and early warning of positive arch rupture disk |
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| CN113238023A true CN113238023A (en) | 2021-08-10 |
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| CN202110573712.2A Pending CN113238023A (en) | 2021-05-25 | 2021-05-25 | Device for safety monitoring and early warning of positive arch rupture disk |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117517102A (en) * | 2024-01-04 | 2024-02-06 | 江苏八方安全设备有限公司 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
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2021
- 2021-05-25 CN CN202110573712.2A patent/CN113238023A/en active Pending
Patent Citations (6)
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| US20140356653A1 (en) * | 2013-05-31 | 2014-12-04 | Robert Bosch Gmbh | Method and device for increasing safety when using battery systems and bursting discs |
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| CN204269069U (en) * | 2014-12-24 | 2015-04-15 | 大连理工安全装备有限公司 | A kind of rupture disk monitoring running state device |
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| CN215066635U (en) * | 2021-05-25 | 2021-12-07 | 大连度达理工安全工程有限公司 | Device for safety monitoring and early warning of positive arch rupture disk |
Non-Patent Citations (1)
| Title |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117517102A (en) * | 2024-01-04 | 2024-02-06 | 江苏八方安全设备有限公司 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
| CN117517102B (en) * | 2024-01-04 | 2024-04-19 | 江苏八方安全设备有限公司 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
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