CN113095007B - Safety evaluation technical method for long-period operation of safety valve - Google Patents
Safety evaluation technical method for long-period operation of safety valve Download PDFInfo
- Publication number
- CN113095007B CN113095007B CN202110373660.4A CN202110373660A CN113095007B CN 113095007 B CN113095007 B CN 113095007B CN 202110373660 A CN202110373660 A CN 202110373660A CN 113095007 B CN113095007 B CN 113095007B
- Authority
- CN
- China
- Prior art keywords
- safety valve
- pressure
- operator
- safety
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000011156 evaluation Methods 0.000 title claims abstract description 25
- 238000004088 simulation Methods 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 23
- 238000002474 experimental method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/28—Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
-
- 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
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
- G01M3/14—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/144—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
- G01N2223/04—Investigating materials by wave or particle radiation by transmission and measuring absorption
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/646—Specific applications or type of materials flaws, defects
- G01N2223/6462—Specific applications or type of materials flaws, defects microdefects
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Health & Medical Sciences (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mathematical Optimization (AREA)
- Evolutionary Computation (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Analysis (AREA)
- Computer Hardware Design (AREA)
- Fluid Mechanics (AREA)
- Algebra (AREA)
- Mathematical Physics (AREA)
- Computing Systems (AREA)
- Computational Mathematics (AREA)
- Toxicology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses a technical method for evaluating the long-period operation safety of a safety valve, which comprises the following steps: s1, scanning a safety valve in use and scanning data of an internal structure of the safety valve; s2, carrying out three-dimensional modeling according to the scanning data; s3, performing a simulation experiment on the three-dimensional modeling safety valve; s4, judging that the simulation evaluation is qualified when the three-dimensional simulation experiment result is within the standard range recorded by the safety valve data; s5, detecting the air tightness of the safety valve qualified in the three-dimensional modeling simulation evaluation. According to the invention, the use environment of the safety valve is simulated through three-dimensional modeling, the metal fault scanner is adopted for scanning the internal structure of the safety valve, and the acquired safety valve parameters are more accurate, so that the evaluation effect is more accurate, the three-dimensional modeling mode is adopted for analysis and evaluation, and the safety evaluation analysis can be carried out when the safety valve is normally used, so that the use of the safety valve is not influenced.
Description
Technical Field
The invention relates to the technical field of safety evaluation of long-period operation of a safety valve, in particular to a technical method for evaluating the safety of the long-period operation of the safety valve.
Background
The safety valve is a special valve which is in a normally closed state under the action of external force, when the pressure of medium in equipment or a pipeline rises to exceed a specified value, the medium in the pipeline or the equipment is prevented from exceeding the specified value by discharging the medium to the outside of the system, the safety valve belongs to automatic valves, is mainly used on boilers, pressure vessels and pipelines, controls the pressure not to exceed the specified value, and plays an important role in protecting personal safety and equipment operation. The injection safety valve must be subjected to a pressure test to be usable.
In the long-period running process of the safety valve, the safety evaluation swimwear needs to be periodically carried out to ensure that the condition that excessive leakage or incapability of discharging the internal pressure of the pressure container cannot occur during use is avoided, so that a technical method for the long-period running safety evaluation of the safety valve is provided.
Disclosure of Invention
The invention aims to provide a technical method for evaluating the long-period running safety of a safety valve, which has simple flow and accurate evaluation and solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a technical method for evaluating the long-period operation safety of a safety valve comprises the following steps:
s1, scanning a safety valve in use, scanning data of an internal structure of the safety valve, and recording various scanning data;
s2, carrying out three-dimensional modeling according to the scanning data, and setting the three-dimensional modeling material as an actual material of the safety valve on a three-dimensional simulator;
s3, performing simulation experiments on the three-dimensional modeling safety valve, wherein the experiments comprise pressure experiments and environment experiments;
s4, judging that the simulation evaluation is qualified when the three-dimensional simulation experiment result is within the standard range recorded by the safety valve data;
s5, performing air tightness detection on the safety valve qualified in three-dimensional modeling simulation evaluation, wherein the air tightness detection is qualified, and judging that the safety valve is safe and qualified in long-period operation.
As a preferred technical solution, the scanning of the safety valve in use in step S1 uses a metal tomography scanner, which measures the object by using an instrument with extremely high sensitivity according to the difference of absorption and transmittance of different materials or tissues to X-rays, then inputs the data obtained by the measurement into an electronic computer, and after the electronic computer processes the data, the electronic computer can shoot a cross-section or three-dimensional image of the inspected part to find the tiny defects in the inspected material.
As a preferred technical solution, in step S2, a three-dimensional simulator is used for three-dimensional modeling, and the three-dimensional simulator can perform parameter input for simulating the object, and simulate the state of the object under different environments and different loads according to the output parameters.
As a preferred technical solution, the pressure test in step S3 specifically includes:
1) Simulating the state that the safety valve is mounted on the container, wherein the pressure inside the container is standard atmospheric pressure;
2) The maximum bearing pressure recorded by the data of the safety valve is taken as the upper limit, and the pressure in the container is slowly increased;
3) When the relief valve begins to release pressure, the pressure in the container is recorded, the pressure is compared with the maximum bearing pressure recorded by the relief valve data, the pressure is lower than 20% of the maximum bearing pressure recorded by the relief valve data, and the pressure test is judged to be unqualified.
As a preferable technical scheme, the environmental experiment in step S3 specifically includes simulating the temperature of the external environment in the normal use state of the safety valve, where the simulated temperature is simulated in the following range: -130-300 degrees celsius.
As a preferred technical solution, in step S4, a computer is used to compare the parameters obtained by simulation with the standard parameter ranges recorded by the safety valve data, the computer uses an arithmetic operator, a valuation operator, a relational operator, a logical operator and a bit operator to perform graphic comparison, and the arithmetic operator, the valuation operator, the relational operator, the logical operator and the bit operator are arranged from bottom to top according to priority: assignment operator < logical AND operator < relational operator < arithmetic operator.
As a preferred technical solution, the specific steps of the air tightness detection in step S5 are as follows:
1) Blocking the air outlet end of the safety valve, and then introducing a test medium, wherein the test medium is clean nitrogen or air;
2) At a constant test pressure and for a period of more than 5 minutes, the pressure of the air inlet cavity must not drop, and the safety valve is checked for leakage with soapy water, so that an increasing number of bubbles must be present.
As a preferred solution, the constant test pressure is in particular 5.6bar, and the pressure gauge used should be of the order of 0.4, measuring 10bar.
In summary, the beneficial effects of the invention are as follows due to the adoption of the technology:
according to the invention, the use environment of the safety valve is simulated through three-dimensional modeling, the internal structure of the safety valve is scanned by adopting a metal fault scanner, and the acquired parameters of the safety valve are more accurate, so that the evaluation effect is more accurate, the three-dimensional modeling mode is adopted for analysis and evaluation, and the safety evaluation analysis can be carried out when the safety valve is normally used, so that the use of the safety valve is not influenced.
Drawings
FIG. 1 is a flow chart of a method for evaluating the long-period operation safety of the safety valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
Example 1
The invention provides a technical method for evaluating the long-period running safety of a safety valve, which is shown in figure 1, and comprises the following steps:
s1, scanning a safety valve in use, scanning data of an internal structure of the safety valve, and recording various scanning data;
the scanning of the safety valve in use in the step S1 is performed by adopting a metal fault scanner, the metal fault scanner measures the object by using an instrument with extremely high sensitivity according to the difference of absorption and transmittance of different materials or tissues to X rays, then the data obtained by measurement is input into an electronic computer, and after the electronic computer processes the data, a cross section or a three-dimensional image of the inspected part can be shot to find out the tiny defects in the inspected material;
s2, carrying out three-dimensional modeling according to the scanning data, and setting the three-dimensional modeling material as an actual material of the safety valve on a three-dimensional simulator;
in the step S2, three-dimensional modeling is carried out by adopting a three-dimensional simulator, the three-dimensional simulator can carry out parameter input of a simulated article, and the three-dimensional simulator simulates the states of the article under different environments and different loads according to output parameters;
s3, performing simulation experiments on the three-dimensional modeling safety valve, wherein the experiments comprise pressure experiments and environment experiments;
s4, judging that the simulation evaluation is qualified when the three-dimensional simulation experiment result is within the standard range recorded by the safety valve data;
in the step S4, the simulated parameters are compared with the standard parameter range recorded by the safety valve data by adopting a computer, the computer adopts an arithmetic operator, a valuation operator, a relational operator, a logical operator and a bit operator to carry out graphic comparison, and the arithmetic operator, the valuation operator, the relational operator, the logical operator and the bit operator are arranged from bottom to top according to the priority as follows: assignment operator < logical AND operator < relational operator < arithmetic operator;
s5, performing air tightness detection on the safety valve qualified in three-dimensional modeling simulation evaluation, wherein the air tightness detection is qualified, and judging that the safety valve is safe and qualified in long-period operation.
Alternatively, in step S2, scanning may be performed using a positive tomography scanner, which is a scanner in which positive electrons are counter particles of the same mass as electrons. In the nucleus, the isotope of the neutron number of the proton number for many months is in a steady state, and the phenomenon that the proton is converted into the neutron to release the positive and the micro-neutron can be generated, and the released positive can be combined with the electron of the adjacent substance to destroy each other, so that two gamma rays with the same energy and opposite directions can be generated by exchanging; in order to capture two gamma rays simultaneously, the detectors of PET must be designed in pairs, when two opposite detectors detect gamma rays simultaneously, an effective event is formed, the process is called coincidence detection, all count data measured on a row of detectors are regarded as line integral of a certain angle, and the projection data of each angle is processed by back projection by using the image recombination principle, so as to obtain the original distribution image.
Example 2
Further, based on the evaluation method of embodiment 1, the pressure experiment described in step S3 is specifically:
1) Simulating the state that the safety valve is mounted on the container, wherein the pressure inside the container is standard atmospheric pressure;
2) The maximum bearing pressure recorded by the data of the safety valve is taken as the upper limit, and the pressure in the container is slowly increased;
3) When the relief valve begins to release pressure, the pressure in the container is recorded, the pressure is compared with the maximum bearing pressure recorded by the relief valve data, the pressure is lower than 20% of the maximum bearing pressure recorded by the relief valve data, and the pressure test is judged to be unqualified.
The environment experiment is specifically that the temperature of the external environment is simulated under the normal use state of the safety valve, and the simulation range of the simulated temperature is as follows: -130-300 degrees celsius.
Example 3
Based on the evaluation method of embodiment 1, further, the specific steps of the air tightness detection described in step S5 are:
1) Blocking the air outlet end of the safety valve, and then introducing a test medium, wherein the test medium is clean nitrogen or air;
2) Under constant test pressure and in the time of more than 5min, the pressure of the air inlet cavity cannot be reduced, the safety valve is checked for external leakage by using soapy water, and bubbles which are increased continuously cannot be generated;
wherein the constant test pressure is in particular 5.6bar, and the pressure gauge used should be of the order of 0.4, measuring 10bar.
Alternatively, for the safety valve mounted on the pipe, the following air tightness test method may be adopted, specifically:
(1) The valve is placed in a half-open state. Sealing the two ends of the ball by using flange covers with pipe joints;
(2) A test medium, either clean nitrogen or air, is introduced into one end. The other end pipe joint is plugged. After gradually pressurizing to 5.6bar, closing the air inlet valve to stop air inlet;
(3) The ball valve is closed (the driving device is operated) after the ball is rotated for several times;
(4) Opening a pipe joint plug at the other end (the end not introducing the test gas) to reduce the cavity pressure to the atmospheric pressure;
(5) The pressure of the air inlet cavity cannot be reduced in a period of more than 5 minutes under the test pressure (5.6 bar);
(6) Meanwhile, soapy water is used for checking the external leakage of each connecting flange part and the filling part, so that bubbles which are continuously increased cannot be generated;
(7) Then introducing a test medium from the other end, and repeating the test;
(8) And after the test is qualified, blowing out the residual soapy water by using compressed air. Removing flange covers at two ends, removing sealing residues on sealing surfaces at two ends of the ball valve, and if the residues enter the valve hole, cleaning;
in summary, the use environment of the safety valve is simulated through three-dimensional modeling, the internal structure of the safety valve is scanned by adopting a metal fault scanner, and the acquired parameters of the safety valve are more accurate, so that the evaluation effect is more accurate, the three-dimensional modeling mode is adopted for analysis and evaluation, and the safety evaluation analysis can be carried out when the safety valve is normally used, so that the use of the safety valve is not influenced.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (7)
1. The technical method for evaluating the long-period operation safety of the safety valve is characterized by comprising the following steps of:
s1, scanning a safety valve in use, scanning data of an internal structure of the safety valve, and recording various scanning data;
the scanning of the safety valve in use in the step S1 is performed by adopting a metal fault scanner, the metal fault scanner measures the object by using an instrument with extremely high sensitivity according to the difference of absorption and transmittance of different materials or tissues to X rays, then the data obtained by measurement is input into an electronic computer, and after the electronic computer processes the data, a cross section or a three-dimensional image of the inspected part can be shot to find out the tiny defects in the inspected material;
s2, carrying out three-dimensional modeling according to the scanning data, and setting the three-dimensional modeling material as an actual material of the safety valve on a three-dimensional simulator;
s3, performing simulation experiments on the three-dimensional modeling safety valve, wherein the experiments comprise pressure experiments and environment experiments;
s4, judging that the simulation evaluation is qualified when the three-dimensional simulation experiment result is within the standard range recorded by the safety valve data;
s5, performing air tightness detection on the safety valve qualified in three-dimensional modeling simulation evaluation, wherein the air tightness detection is qualified, and judging that the safety valve is safe and qualified in long-period operation.
2. The method for evaluating the long-period operation safety of the safety valve according to claim 1, wherein the method comprises the following steps of: in the step S2, three-dimensional modeling is performed by adopting a three-dimensional simulator, the three-dimensional simulator can perform parameter input of a simulated article, and the three-dimensional simulator simulates the state of the article under different environments and different loads according to the output parameters.
3. The method for evaluating the long-period operation safety of the safety valve according to claim 1, wherein the method comprises the following steps of: the pressure experiment in the step S3 is specifically as follows:
1) Simulating the state that the safety valve is mounted on the container, wherein the pressure inside the container is standard atmospheric pressure;
2) The maximum bearing pressure recorded by the data of the safety valve is taken as the upper limit, and the pressure in the container is slowly increased;
3) When the relief valve begins to release pressure, the pressure in the container is recorded, the pressure is compared with the maximum bearing pressure recorded by the relief valve data, the pressure is lower than 20% of the maximum bearing pressure recorded by the relief valve data, and the pressure test is judged to be unqualified.
4. The method for evaluating the long-period operation safety of the safety valve according to claim 1, wherein the method comprises the following steps of: the environmental experiment in step S3 is specifically to simulate the temperature of the external environment in the normal use state of the safety valve, where the simulated temperature simulation range is as follows: -130-300 degrees celsius.
5. The method for evaluating the long-period operation safety of the safety valve according to claim 1, wherein the method comprises the following steps of: in the step S4, the simulated parameters are compared with the standard parameter range recorded by the safety valve data by adopting a computer, the computer adopts an arithmetic operator, a valuation operator, a relational operator, a logical operator and a bit operator to carry out graphic comparison, and the arithmetic operator, the valuation operator, the relational operator, the logical operator and the bit operator are arranged from bottom to top according to the priority as follows: assignment operator < logical AND operator < relational operator < arithmetic operator.
6. The method for evaluating the long-period operation safety of the safety valve according to claim 1, wherein the method comprises the following steps of: the specific steps of the air tightness detection in the step S5 are as follows:
1) Blocking the air outlet end of the safety valve, and then introducing a test medium, wherein the test medium is clean nitrogen or air;
2) At a constant test pressure and for a period of more than 5 minutes, the pressure of the air inlet cavity must not drop, and the safety valve is checked for leakage with soapy water, so that an increasing number of bubbles must be present.
7. The method for evaluating the long-period operation safety of the safety valve according to claim 6, wherein the method comprises the following steps: the constant test pressure is in particular 5.6bar and the pressure gauge used should be of the order of 0.4, measuring 10bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110373660.4A CN113095007B (en) | 2021-04-07 | 2021-04-07 | Safety evaluation technical method for long-period operation of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110373660.4A CN113095007B (en) | 2021-04-07 | 2021-04-07 | Safety evaluation technical method for long-period operation of safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113095007A CN113095007A (en) | 2021-07-09 |
| CN113095007B true CN113095007B (en) | 2023-11-07 |
Family
ID=76674663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110373660.4A Active CN113095007B (en) | 2021-04-07 | 2021-04-07 | Safety evaluation technical method for long-period operation of safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113095007B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1914460A2 (en) * | 2006-10-18 | 2008-04-23 | AREVA NP GmbH | Method and a device for testing the operability of a valve system |
| CN102034025A (en) * | 2010-12-02 | 2011-04-27 | 北京市劳动保护科学研究所 | Method for evaluating functional safety of safety instrument system |
| CN104180771A (en) * | 2014-09-09 | 2014-12-03 | 南京金创有色金属科技发展有限公司 | High-speed and high-precision tank volume measurement method and device based on three-dimensional laser scanning |
| CN106952000A (en) * | 2017-03-31 | 2017-07-14 | 卢涵宇 | A kind of Karst Regional landslide disaster risk dynamic assessment method |
-
2021
- 2021-04-07 CN CN202110373660.4A patent/CN113095007B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1914460A2 (en) * | 2006-10-18 | 2008-04-23 | AREVA NP GmbH | Method and a device for testing the operability of a valve system |
| CN102034025A (en) * | 2010-12-02 | 2011-04-27 | 北京市劳动保护科学研究所 | Method for evaluating functional safety of safety instrument system |
| CN104180771A (en) * | 2014-09-09 | 2014-12-03 | 南京金创有色金属科技发展有限公司 | High-speed and high-precision tank volume measurement method and device based on three-dimensional laser scanning |
| CN106952000A (en) * | 2017-03-31 | 2017-07-14 | 卢涵宇 | A kind of Karst Regional landslide disaster risk dynamic assessment method |
Non-Patent Citations (2)
| Title |
|---|
| 庞庄矿区主供水改造经济分析;赵锋;马骏;;能源技术与管理(第06期);全文 * |
| 立式储罐变形评估的三维激光扫描实验;丁芳芳;睢星飞;刘文才;王磊;郝笑笑;;油气田环境保护(第01期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113095007A (en) | 2021-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104269195B (en) | The implementation method of the experimental system of simulation Nuclear Safety shell basis accident operating mode | |
| KR101009741B1 (en) | Apparatus for simulating fluid leakage of valve | |
| CN105653739A (en) | Inspection and detection report data processing method and system | |
| Pandey et al. | Estimation of parameters of degradation growth rate distribution from noisy measurement data | |
| CN103680647B (en) | Fuel sipping testing environment analogue means | |
| CN113095007B (en) | Safety evaluation technical method for long-period operation of safety valve | |
| CN110850358A (en) | Electric energy meter comprehensive verification method and system based on stepwise regression algorithm | |
| CN109817357A (en) | Method and apparatus based on magnetization function assessment reactor pressure vessel irradiation damage | |
| CN114383834B (en) | Ocean engineering structure micro damage judging method | |
| Pitner et al. | Application of probabilistic fracture mechanics to optimize the maintenance of PWR steam generator tubes | |
| Khaleel et al. | A model for predicting vessel failure probabilities including the effects of service inspection and flaw sizing errors | |
| Hong et al. | PFM application for the PWSCC Integrity of Ni-base Alloy Welds-Development and Application of PINEP-PWSCC | |
| CN113792446A (en) | Creep fatigue residual life evaluation method based on crystal plasticity theory | |
| CN108760271B (en) | Safety valve opening and closing pressure testing device and method for simulating actual working conditions | |
| CN219178841U (en) | Containment tightness test simulation device | |
| Trampus | Ensuring safety of structures and components at nuclear power plants | |
| Stephan et al. | Mechanical aspects concerning thermal fatigue initiation in the mixing zones of piping | |
| Joyce et al. | Stochastic Model Simulation for Evaluation of Spent Fuel Pond Inventory Verification Sampling Plans | |
| Pastoushin et al. | Thermophysical instruments for non-destructive examination of tightness and internal gas pressure or irradiated power reactor fuel rods | |
| Kanzler | How reliable are the results of my NDT process? A scientific answer to a practical everyday question | |
| CN112735615B (en) | Inspection device and inspection method for online sip leakage test equipment | |
| Dickens | Hard Times–CH. D. | |
| Burr et al. | The impact of metrology study sample size on uncertainty in IAEA safeguards calculations | |
| CN117634253A (en) | Nuclear power gate O-ring time-dependent leakage rate prediction method and system | |
| Nilsson | Reliability assessment by aid of probabilistic fracture mechanics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |