CN115420442A - Pressure container detection system, detection method, detection device and terminal thereof - Google Patents

Pressure container detection system, detection method, detection device and terminal thereof Download PDF

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Publication number
CN115420442A
CN115420442A CN202211138774.1A CN202211138774A CN115420442A CN 115420442 A CN115420442 A CN 115420442A CN 202211138774 A CN202211138774 A CN 202211138774A CN 115420442 A CN115420442 A CN 115420442A
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China
Prior art keywords
pretightening force
intelligent
fastener
fasteners
force
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Pending
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CN202211138774.1A
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Chinese (zh)
Inventor
冉小龙
廖成
罗坤
何绪林
叶勤燕
郑兴平
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Chengdu Science and Technology Development Center of CAEP
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Chengdu Science and Technology Development Center of CAEP
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Priority to CN202211138774.1A priority Critical patent/CN115420442A/en
Publication of CN115420442A publication Critical patent/CN115420442A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/25—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons
    • G01L1/255—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons using acoustic waves, or acoustic emission
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
    • G01L5/246—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed using acoustic waves
    • 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
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention provides a pressure container detection system, a detection method, a detection device and a terminal thereof. The detection method comprises the following steps: acquiring pretightening force information of each intelligent fastener of a plurality of intelligent fasteners of a pressure vessel flange; and judging whether the pressure container has leakage danger or not according to the pretightening force of the intelligent fasteners. By the detection method, the pretightening force state of the flange can be detected in real time, the pretightening force is prevented from being loosened due to high-temperature creep deformation and fatigue deformation, and the leakage accident of the pressure container is avoided.

Description

Pressure container detection system, detection method, detection device and terminal thereof
Technical Field
The invention belongs to the field of pressure containers, and particularly relates to a pressure container detection system, a detection method, a detection device and a terminal thereof.
Background
Pressure vessels are a common type of production facility and are commonly used in a variety of specific work environments. In order to fully ensure the safety of the pressure vessel in the service process, regular inspection is often required, so that convenience in equipment manufacturing, installation and maintenance is always one of the goals pursued in the design of the pressure vessel. Pressure vessels are often manufactured in several parts and then connected during the design and manufacture process, and therefore pressure vessels are often provided with various detachable connections. Flange connection is a detachable connection mode commonly used, and has the advantages of good strength and sealing performance and convenient disassembly and assembly, so that the flange connection is widely applied to various working conditions. However, in the production practice process, the flange inevitably has a leakage phenomenon, and once the flange is subjected to sealing failure, economic loss is brought, and safety accidents are further caused.
The present invention has been made in view of this point.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a pressure container detection system, a detection method, a detection device and a terminal thereof, which can detect the pretightening force of each fastener in flange connection, judge whether the pretightening force meets the pretightening force requirement, and further judge the leakage risk of the pressure container based on a judgment structure.
In order to solve the above technical problem, the present invention provides a pressure container detection system, including:
the pre-tightening force measuring instrument comprises a plurality of detection probes, the probes can be correspondingly connected with a plurality of intelligent fasteners of the pressure vessel flange, and the pre-tightening force measuring instrument is used for acquiring pre-tightening force information of each intelligent fastener;
and the intelligent terminal is in communication connection with the pretightening force measuring instrument and is used for acquiring pretightening force information of each intelligent fastening piece and determining the pretightening force of the corresponding fastening piece according to the pretightening force information so as to judge whether the pressure container is in danger of leakage.
The invention also provides a detection method of the pressure container, which comprises the following steps:
acquiring pretightening force information of each intelligent fastener of a plurality of intelligent fasteners of a pressure vessel flange;
determining the pretightening force of the corresponding intelligent fastener according to the pretightening force information of each intelligent fastener;
and judging whether the pressure container has leakage danger or not according to the pretightening force of the intelligent fasteners.
Further optionally, the determining whether the pressure vessel is in danger of leaking according to the pre-tightening force of the plurality of intelligent fasteners includes:
comparing the pretension force to a first threshold;
when the pretightening force is smaller than or equal to the first threshold value, the pretightening force of the corresponding intelligent fastener is considered not to meet the pretightening force requirement;
and when the pretightening force of any one of the plurality of fasteners does not meet the pretightening force requirement, judging that the pressure container has a leakage risk.
Further optionally, after determining that the pressure vessel is in danger of leaking, the detection method further includes:
and generating prompt information, wherein the prompt information comprises leakage danger prompt information and intelligent fastener information which does not meet the pre-tightening requirement.
Further optionally, the determining, according to the pretightening force of the plurality of intelligent fasteners, whether the pressure vessel is in danger of leakage, further includes:
and when the pretightening force of the fasteners meets the pretightening force requirement, prompting a user that the pressure container is free from leakage danger.
Further optionally, the detection method further includes:
comparing the pre-tightening force of the intelligent fasteners meeting the pre-tightening force requirement with a second threshold value, and determining the pre-tightening force state of each fastener based on the comparison result;
wherein the second threshold is greater than the first threshold.
Further optionally, the determining a pretension state of each fastener based on the comparison comprises:
when the pretightening force is greater than or equal to the second threshold value, judging that the pretightening force state of the corresponding intelligent fastener is good;
and when the pretightening force is smaller than the second threshold value, judging that the pretightening force of the corresponding intelligent fastener is in insufficient risk.
Further optionally, the detection method further includes:
acquiring the service life of a fastener with insufficient pretightening force;
judging whether the use duration is longer than a preset use duration or not;
if yes, prompting the user to replace.
Further optionally, the comparing the pretightening force with the first threshold to determine whether the pretightening force of the corresponding fastener meets the pretightening force requirement includes:
judging whether the pretightening force is smaller than the first threshold value or not;
and if so, judging that the pretightening force of the corresponding fastener does not meet the pretightening force requirement.
The invention also provides a non-transitory computer readable storage medium having stored thereon program instructions which, when executed by one or more processors, are adapted to implement the method of any one of the preceding claims.
The invention also provides an intelligent terminal which adopts the method of any one of the above technical schemes or a non-transitory computer readable storage medium with the above.
After the technical scheme is adopted, the invention has the following beneficial effects:
the pretightening force state of the flange joint can be monitored and detected in real time, and leakage accidents are avoided.
Aiming at the condition that a plurality of devices can not be stopped, the manual direct contact can be reduced as much as possible, and the personal safety is protected by adopting a detection system for testing.
The method can quantitatively detect whether the pre-tightening force value applied during installation and debugging meets the pre-tightening requirement.
It is possible to detect seal failure when gaskets in a flanged connection are subject to high temperature creep and stress relaxation of the gasket and bolts due to operating conditions and environment.
In the daily maintenance process, the phenomena of stress relaxation and the like can be better prevented through the pre-tightening force sensor detection system, and meanwhile, when the leakage fault occurs, the pre-tightening force sensor can more quickly check the fault position.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic illustration of piping installation of a pressure vessel flange according to an embodiment of the present invention.
FIG. 2 is a partial schematic view of a pressure vessel flange according to an embodiment of the invention.
Fig. 3 is a flow chart illustrating a method for inspecting a pressure vessel according to an embodiment of the present invention.
Fig. 4 is a schematic flow chart of a method for inspecting a pressure vessel according to an embodiment of the present invention.
Fig. 5 is a schematic flow chart of a method for inspecting a pressure vessel according to an embodiment of the present invention.
Wherein, 1-pretightening force sensor 2-flange 3-pipeline 4-detecting probe 5-computer terminal.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For solving the problem of leakage caused by insufficient bolt pretightening force in the flange connection of the pressure vessel, the embodiment provides a pressure vessel detection system
The invention provides a pressure container detection system, comprising:
the pre-tightening force measuring instrument comprises a plurality of detection probes, the probes can be correspondingly connected with a plurality of intelligent fasteners of the pressure vessel flange, and the pre-tightening force measuring instrument is used for acquiring pre-tightening force information of each intelligent fastener;
and the intelligent terminal is in communication connection with the pretightening force measuring instrument and is used for acquiring pretightening force information of each intelligent fastening piece and determining the pretightening force of the corresponding fastening piece according to the pretightening force information so as to judge whether the pressure container is in danger of leakage.
The common bolts in the flange connection of the pressure vessel are replaced by intelligent fasteners, the intelligent fasteners are fasteners with thin film sensors, which are prepared by adopting an in-situ growth technology at the heads of the common fasteners, and the materials and specification types of the fasteners are not limited. Probes of the pretightening force measuring instrument are connected with the film sensors in a one-to-one correspondence manner. And forming a composite layer film sensor on the top of the fastener in a vacuum environment, wherein the first layer is a piezoelectric layer, the second layer is a protective layer, and the third layer is an electrode layer. The piezoelectric ceramic film is made into piezoelectric sensing type bolt, which integrates ultrasonic wave emission and signal receiving. When the fastener pretension force measuring system contacts the thin film sensor, a piezoelectric pulse signal is generated, and an electric pulse is applied to the piezoelectric layer to generate ultrasonic waves. The ultrasonic wave propagates in the bolt, and a return signal is received by the film sensor and is analyzed and processed to calculate the real-time load of the current fastener. The pressure vessel detection system of this embodiment can real-time monitoring and detect the pretightning force state of flange junction, avoids revealing the emergence of accident.
The present embodiment further provides a method for detecting a pressure container, and with reference to the flowchart of fig. 3, the method for detecting a pressure container includes steps S1 to S4, where:
s1, acquiring pretightening force information of each intelligent fastener of a plurality of intelligent fasteners of a pressure vessel flange;
the pretightening force information comprises a time difference between the emission and the reception of the electric signals of the intelligent fastener in the current fastening state, and the time difference can reflect the length change of the intelligent fastener;
s2, determining the pretightening force of the corresponding fastener according to the pretightening force information of each intelligent fastener;
the length of the fastener is detected through the pretightening force measuring instrument, the pretightening force measuring instrument wirelessly transmits the length change of the fastener to the master control system through an electric signal, and the electric signal is converted into the pretightening force of the fastener.
And S3, judging whether the pressure container has leakage danger or not according to the pretightening force of the intelligent fasteners.
The fastening states of the intelligent fasteners on the flanges at the key positions of the pressure container are detected, so that whether the pressure container has leakage risks or not is judged, and leakage accidents can be effectively avoided.
Further optionally, with reference to the flowchart of fig. 4, S3 includes S31 to S33, where:
s31, comparing the pretightening force of each intelligent fastener with a first threshold value;
s32, when the pretightening force is smaller than or equal to the first threshold value, the pretightening force corresponding to the intelligent fastener is determined not to meet the pretightening force requirement;
s33, when the pretightening force of any one of the intelligent fasteners does not meet the pretightening force requirement, judging that the pressure container has a leakage risk.
For different pressure vessels, the specifications of intelligent fasteners used at flange joints are also different, and the corresponding pretightening force sensors can be customized according to the difference of the material and the size of bolts under the actual working conditions, so that the conditions of mismatching or inapplicability are avoided. The threshold may also vary from smart fastener to smart fastener, i.e., the first threshold is not a fixed value.
Through comparing the pretightning force of every intelligent fastener of flange joint department that detects rather than the first threshold value that corresponds, can judge whether the pretightning force of this intelligent fastener satisfies the pretensioning requirement, can judge pressure vessel in advance whether have the danger of revealing based on the judged result of the pretightning force of all intelligent fasteners of flange joint department to the better accident of revealing of preventing pressure vessel.
Further optionally, with reference to the flowchart of fig. 5, step S3 further includes S34:
s34, when the pretightening force is larger than the first threshold value, the pretightening force corresponding to the intelligent fastener meets the pretightening force requirement.
And when the detected pretightening force is less than or equal to a first threshold value, judging that the pretightening force of the fastener does not meet the pretightening force requirement, such as the sealing damage of the gasket in the flange connection caused by high-temperature creep and stress relaxation of the gasket and the bolt due to operating conditions and environment. And on the contrary, if the pretightening force is larger than the first threshold, the current pretightening force of the intelligent fastener is considered to meet the pretightening requirement.
Further optionally, with reference to the flowchart of fig. 4, after determining that the pressure container is in danger of leaking, the detection method further includes step S4, where:
s41, generating prompt information, wherein the prompt information comprises a leakage danger prompt and intelligent fastener information which does not meet the pre-tightening requirement;
s42, when the pretightening force of the fasteners meets the pretightening force requirement, prompting a user that the pressure container is not in danger of leakage.
After the pretightening force of each fastener of the plurality of fasteners is detected, if the pretightening force of one fastener does not meet the pretightening force requirement, the pressure container is considered to have leakage danger, and a user is prompted that the pressure container has the leakage danger. And only when the pretightening force of the plurality of fasteners meets the pretightening force requirement, the pressure container is considered to have no leakage risk.
Further optionally, with reference to the flowchart of fig. 3, the detecting method further includes step S5:
s5, comparing the pre-tightening force of the intelligent fasteners meeting the pre-tightening force requirement with a second threshold value, and determining the pre-tightening force state of each fastener based on the comparison result;
wherein the second threshold is greater than the first threshold.
Two detection intervals can be formed by setting the first threshold and the second threshold, wherein one is between the first threshold and the second threshold, and the other is larger than the second threshold. And after judging that the pretightening force of the intelligent fastener meets the pretightening force requirement, further comparing the pretightening force of the intelligent fastener with a second threshold value so as to determine the pretightening force state of the intelligent fastener.
Further optionally, with reference to the flowchart of fig. 4, the determining the pretension state of each fastener in step S5 based on the comparison result includes S51 to S52, where:
s51, when the pretightening force is larger than or equal to the second threshold value, prompting a user that the pretightening force corresponding to the fastener is good;
s52, when the pretightening force is smaller than the second threshold value, prompting a user that the pretightening force corresponding to the fastener is insufficient.
Further optionally, with reference to the schematic flow chart of fig. 4, the detection method further includes steps S6 to S8, where:
s6, acquiring the service life of the fastener with insufficient pretightening force risk;
s7, judging whether the service life is longer than a preset service life or not; if yes, executing S7;
and S8, prompting a user to replace.
The inside or high in the clouds storage space of detecting system stores the attribute information such as serial number, position, installation time, length of service etc. of different pressure vessels and intelligent fastener, and when needs, when the pretightning force state of intelligent fastener had not enough risks, the detection method of this embodiment can directly transfer the length of service of corresponding fastener, and the comparison based on length of service and length of service of presetting, judges whether need change to prevent the condition that stress relaxes, avoids the emergence of pressure vessel leakage accident.
With reference to fig. 1 and fig. 2, the detection method of this embodiment is further described, in which a functional film layer is processed for flange bolts at different positions and with different specifications, so that the flange bolt has a pre-tightening force detection function (the processing of the functional layer does not damage the main structure of the bolt, and does not affect the tooling of the flange bolt); the flange is assembled according to a specific product assembly drawing, after the assembly is completed, a pre-tightening force sensor detection system is adopted to detect the assembled flange bolt (a probe of the detection system is contacted with a functional thin film layer on the top of the bolt, and a signal is transmitted back to a computer terminal for processing to obtain pre-tightening force information), and whether the flange bolt reaches the pre-tightening force of the assembly at the corresponding position of the product and the flange can be detected; when the pipeline is in a normal working state, the pretightening force state of the flange can be detected in real time (the stress state of the pretightening force sensor can also be detected regularly), the pretightening force relaxation caused by high-temperature creep deformation and fatigue deformation is prevented, and accidents are avoided.
The present embodiments also provide a non-transitory computer readable storage medium having stored thereon program instructions, which when executed by one or more processors, are configured to implement the method of any of the preceding embodiments.
The present embodiment also provides a smart terminal that employs the method of any one of the preceding embodiments, or a non-transitory computer-readable storage medium having the foregoing.
The intelligent terminal comprises a handheld terminal, a computer terminal and an industrial personal computer.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims (10)

1. A pressure vessel inspection system, comprising:
the pre-tightening force measuring instrument comprises a plurality of detection probes, the probes can be correspondingly connected with a plurality of intelligent fasteners of a pressure container flange, and the pre-tightening force measuring instrument is used for acquiring pre-tightening force information of each intelligent fastener;
the intelligent terminal is in communication connection with the pretightening force measuring instrument and is used for acquiring pretightening force information of each intelligent fastening piece and determining pretightening force corresponding to each intelligent fastening piece according to the pretightening force information so as to judge whether the pressure container is in danger of leakage.
2. A method of inspecting a pressure vessel, comprising:
acquiring pretightening force information of each intelligent fastener of a plurality of intelligent fasteners of a pressure vessel flange;
determining the pretightening force of the corresponding intelligent fastener according to the pretightening force information of each intelligent fastener;
and judging whether the pressure container has leakage danger or not according to the pretightening force of the intelligent fasteners.
3. The method of testing as defined in claim 2, wherein determining whether the pressure vessel is at risk of leaking based on the pretension of the plurality of intelligent fasteners comprises:
comparing the pretension of each intelligent fastener to a first threshold;
when the pretightening force is smaller than or equal to the first threshold value, the pretightening force of the corresponding intelligent fastener is considered not to meet the pretightening force requirement;
and when the pretightening force of any one of the intelligent fasteners does not meet the pretightening force requirement, judging that the pressure container has a leakage risk.
4. The inspection method according to claim 3, wherein after determining that the pressure vessel is at risk of leaking, the inspection method further comprises:
and generating prompt information, wherein the prompt information comprises leakage danger prompt information and intelligent fastener information which does not meet the pre-tightening requirement.
5. The method for detecting according to claim 3, wherein said determining whether said pressure vessel is in danger of leaking based on the pretension of said plurality of intelligent fasteners further comprises:
and when the pretightening force of the intelligent fasteners meets the pretightening force requirement, prompting a user that the pressure container is not in danger of leakage.
6. The detection method of claim 3, further comprising:
comparing the intelligent fasteners meeting the pretensioning force requirement with a second threshold value, and determining the pretensioning force state of each intelligent fastener based on the comparison result;
wherein the second threshold is greater than the first threshold.
7. The method of testing as defined in claim 6, wherein said determining a pretension state for each intelligent fastener based on the comparison comprises:
when the pretightening force is greater than or equal to the second threshold value, judging that the pretightening force state of the corresponding intelligent fastener is good;
and when the pretightening force is smaller than the second threshold value, judging that the pretightening force of the corresponding intelligent fastener is insufficient.
8. The method of testing as defined in claim 7, wherein when the pretension state of the intelligent fastener is determined to be better, the method further comprises:
acquiring the service life of the intelligent fastener;
judging whether the use time length is greater than or equal to a preset use time length or not;
if yes, prompting the user to replace.
9. A non-transitory computer-readable storage medium having stored thereon program instructions which, when executed by one or more processors, are to implement the method of any one of claims 2-8.
10. A smart terminal employing the method of any one of claims 2-8, or having the non-transitory computer-readable storage medium of claim 9.
CN202211138774.1A 2022-09-19 2022-09-19 Pressure container detection system, detection method, detection device and terminal thereof Pending CN115420442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211138774.1A CN115420442A (en) 2022-09-19 2022-09-19 Pressure container detection system, detection method, detection device and terminal thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211138774.1A CN115420442A (en) 2022-09-19 2022-09-19 Pressure container detection system, detection method, detection device and terminal thereof

Publications (1)

Publication Number Publication Date
CN115420442A true CN115420442A (en) 2022-12-02

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Application Number Title Priority Date Filing Date
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Country Status (1)

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