CN116658728B - Positioning method for pipeline plug and detection part of measuring instrument - Google Patents

Positioning method for pipeline plug and detection part of measuring instrument Download PDF

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Publication number
CN116658728B
CN116658728B CN202310936418.2A CN202310936418A CN116658728B CN 116658728 B CN116658728 B CN 116658728B CN 202310936418 A CN202310936418 A CN 202310936418A CN 116658728 B CN116658728 B CN 116658728B
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China
Prior art keywords
inner ring
outer ring
ring fixing
blocking part
plug
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Chinese (zh)
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CN116658728A (en
Inventor
陈为晶
吴孟辉
方仁桂
池辉
杨爱军
邱如兰
唐晨
许健
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Fujian Metrology Institute
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Fujian Metrology Institute
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/008—Branching pipes; Joining pipes to walls for connecting a measuring instrument
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
    • G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • 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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  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention provides a pipeline plug of a measuring instrument and a positioning method of a detection piece, wherein the pipeline plug comprises an outer ring blocking part and an inner ring fixing part, and the outer ring blocking part surrounds the outer ring fixing part; the inner ring fixing part is provided with a connecting through hole matched with a detection piece on the measuring instrument; the outer side surface of the outer ring blocking part is obliquely arranged; the inner ring fixing part can move back and forth in the outer ring blocking part, and the interval between the outer end surface of the inner ring fixing part and the outer end surface of the outer ring blocking part changes along with the pipe diameter of the pipe to be detected and the caliber of the measuring port on the pipe to be detected. Therefore, the invention can improve the accuracy of measurement and ensure the safety of testers; meanwhile, the accurate positioning of the detecting piece in the flue can be ensured, so that the accuracy of measurement is further improved.

Description

Positioning method for pipeline plug and detection part of measuring instrument
Technical Field
The invention relates to the technical field of parts of measuring instruments, in particular to a pipeline plug of a measuring instrument and a positioning method of a detecting element.
Background
For measurements in pipes, it is often necessary for the measuring instrument to extend into the pipe for the measurement, in particular for the extension of the gas pipe, care is taken to take account of the data deviations and personnel safety risks caused by the dissipation of the gas during the measurement.
Wherein, the flue gas analyzer continuously analyzes and measures CO by using an electrochemical sensor 2 、CO、NO x 、SO 2 The equipment with equal smoke content is suitable for various industrial gas furnaces or chimneys; an environmental protection industry; an engine; monitoring a boiler; an energy monitoring function department; the metallurgical industry; the thermal power industry; the silicate industry of building materials; petrochemical engineering energy-saving monitoring and the like. According to the use mode, the device can be divided into a handheld smoke analyzer and a fixed connection record smoke analyzer. The handheld smoke analyzer has the advantages of low price, simplicity in operation, perfect functions, convenience in carrying, flexibility in testing, long service life, convenience in maintenance and the like, and is used by more and more enterprises and detection institutions.
When the handheld smoke analyzer measures smoke components, a probe of the handheld smoke analyzer is required to extend into the flue from the test port and perform measurement data at a proper position. This method has the following disadvantages:
1. when the probe of the handheld flue gas analyzer stretches into the flue from the test port, high-temperature flue gas in the flue can escape from the side gap because the probe is generally much smaller than the test port, so that the flow field of the flue gas is influenced to cause deviation of a test result, and potential safety hazards are generated for testers;
2. the position of the probe in the flue of the handheld flue gas analyzer is generally required, so that the probe needs to be accurately positioned in the flue, otherwise, deviation of measurement results can occur, but accurate positioning cannot be achieved because the probe is positioned in the flue in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the positioning method of the pipeline plug and the detection part of the measuring instrument, which improves the measuring accuracy and ensures the safety of testers.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a pipe plug of a measuring instrument, which comprises an outer ring blocking part and an inner ring fixing part, wherein the outer ring blocking part surrounds the outer ring fixing part;
the inner ring fixing part is provided with a connecting through hole matched with a detection piece on the measuring instrument;
the outer side surface of the outer ring blocking part is obliquely arranged;
the inner ring fixing part can move back and forth in the outer ring blocking part, and the interval between the outer end surface of the inner ring fixing part and the outer end surface of the outer ring blocking part changes along with the pipe diameter of the pipe to be detected and the caliber of the measuring port on the pipe to be detected.
The invention has the beneficial effects that: the connecting through hole on the inner ring fixing part is used for the detection part to pass through and be fixed on the plugging head, and the measuring port is plugged by the outer ring plugging part which is obliquely arranged, so that gas in the pipeline is prevented from escaping from the measuring port, the measuring accuracy is improved, and the safety of a tester is ensured; meanwhile, the inner ring fixing part moves back and forth in the outer ring blocking part, so that the distance between the outer end face of the inner ring fixing part and the outer end face of the outer ring blocking part changes along with the pipe diameter of the pipe to be measured and the caliber of the measuring port on the pipe to be measured, thereby ensuring the accurate positioning of the detecting part in the flue and further improving the measuring accuracy.
Optionally, the outer ring blocking part is a hollow round table.
Optionally, the inner side surface of the outer ring blocking part is in threaded connection with the outer side surface of the inner ring fixing part.
According to the description, the detachable connection of the outer ring blocking part and the inner ring fixing part can be realized through threaded connection, so that flexible replacement can be performed according to different types of detectors and different sizes of measuring ports, and the applicability of the plug is improved; and the position of the detecting piece in the pipeline can be adjusted.
Optionally, the outer side surface of the outer ring blocking portion has an inclination angle of 45 °.
According to the description, when the inclination angle is 45 degrees, the outer ring blocking part is convenient to block the measuring port, and the detecting piece is convenient to accurately position.
Optionally, the inner ring fixing part comprises an inner ring fixing ring and an inner ring rubber piece, the inner ring fixing ring surrounds the inner ring rubber piece, and a connecting through hole matched with a detecting piece on the measuring instrument is formed in the middle of the inner ring rubber piece.
As can be seen from the above description, the inner ring rubber has a certain elasticity to be in interference fit with the detecting member, so that the detecting member can be fixed in the inner ring rubber without easy movement.
Optionally, the outer side surface of the inner ring fixing ring is provided with scales.
From the above description, the graduations are used to assist in the adjustment of the position of the probe within the pipe.
Optionally, a protective cover extends from one end of the outer ring blocking portion farthest from the inner ring fixing portion to a direction away from the inner ring fixing portion.
According to the above description, the protection cover arranged on the outer edge can further prevent the gas from injuring the test personnel.
Optionally, the outer ring blocking portion and the inner ring fixing portion are both high temperature resistant members.
In a second aspect, the present invention provides a method for positioning a probe, based on the first aspect, a pipe plug of a measuring instrument, including the steps of:
measuring to obtain the required extending length R of the detecting piece in the pipeline to be detected and the caliber D of a measuring port on the pipeline to be detected;
inserting the detecting piece into the connecting through hole, so that the distance L between the inner end face of the detecting piece and the outer end face of the inner ring fixing part meets the following relation:
R+B-E<L<R+C+B- E
E=(D-d)/ (2*tanα)
wherein B is the length of the outer ring blocking part, E is the interval from the inner end surface of the outer ring blocking part to a measuring port on the pipeline to be measured, d is the outer diameter of the inner end surface of the outer ring blocking part, C is the length of the inner ring fixing part, and alpha is the inclination angle of the outer side surface of the outer ring blocking part;
moving the inner ring fixing portion in the outer ring blocking portion until a space S between an outer end surface of the inner ring fixing portion and an outer end surface of the outer ring blocking portion satisfies the following relation:
S=L-R-B+E
and starting measurement after the outer ring blocking part blocks the measuring port.
Optionally, if the outer side surface of the inner ring fixing ring is provided with a scale and the starting point of the scale is the outer end surface of the inner ring fixing portion, when the inner ring fixing portion moves in the outer ring blocking portion, the movement is stopped when the scale reaches L-R-b+e.
The technical effects corresponding to the method for positioning the detecting element provided in the second aspect refer to the description related to the pipe plug of the measuring instrument provided in the first aspect.
Drawings
FIG. 1 is a schematic diagram illustrating the fitting of a pipe plug of a measuring instrument according to an embodiment of the present invention;
FIG. 2 is a schematic view of an outer side surface of an inner ring fixing portion according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the fitting of a pipe plug of a measuring apparatus to a flue according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a relationship between a pipe plug of a measuring apparatus and a flue according to an embodiment of the present invention;
fig. 5 is a main flowchart of a probe positioning method according to an embodiment of the present invention.
[ reference numerals description ]
1. An outer ring blocking part;
2. an inner ring fixing portion; 21. an inner ring fixing ring; 22. an inner ring rubber member; 23. a connecting through hole; 24. a scale;
3. a protective cover;
100. a flue;
200. a flue gas analyzer; 201. and (3) a probe.
Detailed Description
In order that the above-described aspects may be better understood, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
Referring to fig. 1 to 4, the pipe plug of the measuring apparatus provided in this embodiment is applied to a flue gas pipe (hereinafter referred to as a flue) for measuring and analyzing components of flue gas, so that the measuring apparatus in this embodiment is a flue gas analyzer 200, a probe 201 of the flue gas analyzer 200 is a probe, a pipe to be measured is the flue 100, and in other embodiments, the pipe plug can also be applied to the extension measurement of other gas pipes, and the probe is a probe corresponding to the gas analyzer.
Specifically, the pipe plug of the measuring instrument in the embodiment comprises an outer ring blocking portion 1 and an inner ring fixing portion 2, wherein the outer ring blocking portion 1 surrounds the inner ring fixing portion 2. Since the embodiment is applied to the flue 100, the temperature of the flue gas is considered to be high, and therefore, the outer ring blocking portion 1 and the inner ring fixing portion 2 are both high temperature resistant members in the embodiment.
As shown in fig. 1, the outer ring blocking part 1 is a hollow circular truncated cone, and is adapted to a circular measuring port commonly used at present, so that applicability of the circular measuring port is ensured.
Wherein, the outer side surface of the outer ring blocking part 1 is obliquely arranged, and in the embodiment, the inclination angle of the outer side surface of the outer ring blocking part 1 is 45 degrees, and in other embodiments, the inclination angle of the outer side surface of the outer ring blocking part 1 is [30 degrees, 75 degrees ]. This angle of inclination facilitates the outer ring plug 1 to plug the measuring port because if the angle of inclination is too small, the size of the measuring port adapted is too small, whereas if the angle of inclination is too large, the stability of the plug is poor. While the 45 deg. arrangement facilitates accurate positioning of the probe 201.
As shown in fig. 1, the inner ring fixing portion 2 includes an inner ring fixing ring 21 and an inner ring rubber member 22, the inner ring fixing ring 21 being wrapped around the inner ring rubber member 22, specifically, the inner ring fixing ring 21 being bonded to the outer ring rubber member 22. Wherein, the middle of the inner ring rubber member 22 is provided with a connecting through hole 23 which is connected with the probe 201 in a matching way. It is considered that the shape of the connection through-hole 23 and the shape of the probe 201 are adapted.
The hand-held smoke analyzer 200 also ensures that the probe 201 remains relatively stationary after positioning. In the prior art, because the tester cannot fix for a long time or the flue gas impact and other factors, the probe 201 of the flue gas analyzer 200 is easy to move in the position of the flue 100 due to the movement of the hand, which also causes deviation of the test result, therefore, the inner ring rubber member 22 has a certain elasticity, the diameter of the connecting through hole 23 can be set to be slightly smaller than that of the probe 201, for example, the diameter of the connecting through hole 23 is 80% of the diameter of the probe 201, 100% ], and thus, the probe 201 and the connecting through hole 23 of the inner ring rubber member 22 are in interference fit, so that the probe 201 can be fixed in the connecting through hole 23 of the inner ring rubber member 22 and cannot move easily.
Referring to fig. 2, the outer side surface of the inner ring fixing ring 21 is provided with graduations 24 for assisting in the positional adjustment of the probe 201 within the flue 100.
Therefore, as can be seen from fig. 1 and 2, the inner ring fixing portion 2 can move back and forth in the outer ring blocking portion 1, in this embodiment, the inner side surface of the outer ring blocking portion 1 is in threaded connection with the outer side surface of the inner ring fixing portion 2, so that the position of the probe 201 in the flue 100 can be adjusted, and detachable connection between the outer ring blocking portion 1 and the inner ring fixing portion 2 can be realized, and the detachable connection has the advantage that the probe can be flexibly replaced according to different types of probes and measuring ports with different sizes, so as to improve the applicability of the plug.
In this embodiment, referring to fig. 3 and 4, it can be seen that the space S between the outer end surface of the inner ring fixing portion 2 and the outer end surface of the outer ring plug portion 1 varies with the pipe diameter of the pipe to be measured and the caliber D of the measuring port on the pipe to be measured, and specifically satisfies the following relation:
S=L-R-B+E
R+B-E<L<R+C+B- E
E=(D-d)/ (2*tanα)
wherein L is the distance between the inner end surface of the probe 201 and the outer end surface of the inner ring fixing portion 2, R is the required extending length of the probe 201 in the pipe to be measured, B is the length of the outer ring blocking portion 1, E is the distance between the inner end surface of the outer ring blocking portion 1 and the measuring port on the pipe to be measured, d is the outer diameter of the inner end surface of the outer ring blocking portion 1, C is the length of the inner ring fixing portion 2, and α is the inclination angle of the outer side surface of the outer ring blocking portion 1.
Therefore, when the inclination angle of the outer side surface of the outer ring-blocking portion 1 is 45 °, tan α=1, i.e., e= (D-D)/2. Wherein the extension length R is converted according to the pipe diameter of the flue 100.
As can be seen from fig. 3, when the embodiment is applied to the flue 100 for measuring and analyzing the smoke components, the operation process is as follows:
(1) Selecting an outer ring blocking part 1 and an inner ring fixing part 2 of proper sizes according to the measurement port size of the flue 100 and the size of the probe 201;
(2) The extension length of the probe 201 is determined according to the pipe diameter of the flue 100 and the caliber of the measuring port on the flue 100, so that the required size of the scale 24 on the inner ring fixing part 2 is determined, the inner ring fixing part 2 is screwed into the outer ring blocking part 1 until the scale 24 on the inner ring fixing part 2 reaches the required size, and the accurate positioning of the probe 201 in the flue 100 can be completed;
(3) The probe 201 is inserted into the connection through hole 23, the outer ring plug 1 is plugged up to the measurement port of the flue 100, and then measurement analysis of the smoke components in the flue 100 is started.
It can be seen from the above that, in this embodiment, the measuring port can be plugged by the outer ring plugging portion 1, and the probe 201 can be fixed by the inner ring fixing portion 2, so that the smoke is prevented from escaping from the measuring port, the measuring accuracy is improved, and the safety of the tester is ensured. And the position of the probe 201 in the flue 100 is adjusted through the threaded connection of the outer ring blocking part 1 and the inner ring fixing part 2 and the scale 24 on the inner ring fixing ring 21, so that the accurate positioning of the position of the probe 201 is realized, and the measurement accuracy is further improved.
Example two
Referring to fig. 1 to 4, in the first embodiment, a pipe plug of a measuring instrument is provided, wherein a protective cover 3 extends from one end of an outer ring blocking portion 1 farthest from an inner ring fixing portion 2 toward a direction away from the inner ring fixing portion 2, the protective cover 3 is fixedly bonded with the outer ring blocking portion 1, and the protective cover 3 is a ring-shaped and high-temperature resistant member, such as a transparent heat-resistant plastic material.
Because the protection cover 3 extends outwards on the outer ring blocking part 1 again, which is similar to a hat brim on a hat, when the outer ring blocking part 1 is blocked on a measuring port of the flue 100 or when the outer ring blocking part 1 is pulled out of the measuring port of the flue 100, the smoke of the measuring port is prevented from escaping to the periphery after being blocked by the protection cover 3 and is not directly escaped, so that the smoke can be prevented from damaging a tester, and the escaped smoke also plays a role in blocking and guiding the smoke in the continuous measurement process, thereby further preventing the smoke from damaging the tester.
Example III
Referring to fig. 2 to 5, the method for positioning a probe according to the present embodiment is based on the pipe plug of the measuring instrument according to the first or second embodiment, and includes the steps of:
s1, measuring to obtain the required extending length R of the detecting piece in the pipeline to be detected and the caliber D of a measuring port on the pipeline to be detected;
in this embodiment, the required penetration length R of the probe 201 into the flue 100 is the radius of the flue 100, so that a measuring tape, a vernier caliper, a scale 24, or the like can be used to measure the pipe diameter of the flue 100 and the caliber of the measuring port, and then half of the pipe diameter is taken as the penetration length R. Of course, other penetration lengths may be determined based on pipe diameter.
S2, inserting the detection piece into the connecting through hole 23, so that the distance L between the inner end surface of the detection piece and the outer end surface of the inner ring fixing part 2 meets the following relation:
R+B-E<L<R+C+B- E
E=(D-d)/ (2*tanα)
wherein B is the length of the outer ring blocking part 1, E is the distance between the inner end surface of the outer ring blocking part 1 and a measuring port on a pipeline to be measured, d is the outer diameter of the inner end surface of the outer ring blocking part 1, C is the length of the inner ring fixing part 2, and alpha is the inclination angle of the outer side surface of the outer ring blocking part 1;
in step S2, coarse adjustment is performed by the probe 201, so that the placement position of the probe 201 is related to the radius R of the flue 100, and it is necessary to ensure that the subsequent screwing of the inner ring fixing portion 2 can meet the extending length R required for the probe 201 to reach, and therefore, the space S between the outer end surface of the inner ring fixing portion 2 and the outer end surface of the outer ring blocking portion 1 is greater than 0 and smaller than the length of the inner ring fixing portion 2, so as to obtain the inequality described above.
Thus, the tester selects a value L based on the inequality 0 The probe 201 is then adjusted so that the distance L between the inner end face thereof and the outer end face of the inner ring fixing portion 2 is L 0 . In the usual case, L 0 r+0.5×c+b-E, which can reduce the subsequent screwing of the inner ring fixing portion 2.
S3, moving the inner ring fixing part 2 in the outer ring blocking part 1 until the interval S between the outer end surface of the inner ring fixing part 2 and the outer end surface of the outer ring blocking part 1 meets the following relation:
S=L-R-B+E
thus, since the spacing L is a determined value L 0 The extending length R, the extending length B and the distance E are all known, so that a certain distance S can be obtained, and the tester can put the probe 201 into the desired position in the flue 100 only by screwing the inner ring fixing portion 2 into the outer ring blocking portion 1 to satisfy the distance S.
As shown in fig. 2, if the outer side surface of the inner ring fixing ring 21 is provided with the scale 24 and the starting point of the scale 24 is the outer end surface of the inner ring fixing portion 2, when the inner ring fixing portion 2 is moved in the outer ring stopper portion 1, the movement is stopped when the scale 24 reaches L-R-b+e. This allows for accurate positioning of the probe 201 by simply looking at the scale 24 as it is screwed in, without having to make a continuous measurement.
S4, after the outer ring blocking part 1 is blocked on the measuring port, the measurement is started.
Thus, it should be noted that, in this embodiment, the specific selection of each module is one specific example, and in other equivalent embodiments, a model capable of satisfying the corresponding function may be used instead.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.

Claims (9)

1. The pipeline plug of the measuring instrument is characterized by comprising an outer ring blocking part and an inner ring fixing part, wherein the outer ring blocking part surrounds the outer ring fixing part;
the inner ring fixing part is provided with a connecting through hole matched with a detection piece on the measuring instrument;
the outer side surface of the outer ring blocking part is obliquely arranged;
the inner ring fixing part comprises an inner ring fixing ring and an inner ring rubber piece, the inner ring fixing ring surrounds the outer side of the inner ring rubber piece, and a connecting through hole matched with a detection piece on the measuring instrument is formed in the middle of the inner ring rubber piece;
the inner ring fixing part can move back and forth in the outer ring blocking part, and the interval between the outer end surface of the inner ring fixing part and the outer end surface of the outer ring blocking part changes along with the pipe diameter of the pipe to be detected and the caliber of the measuring port on the pipe to be detected.
2. The pipe plug of claim 1, wherein the outer ring plug is a hollow circular truncated cone.
3. The pipe plug of claim 1, wherein the inner side of the outer ring plug portion is threadably connected to the outer side of the inner ring fixing portion.
4. The pipe plug of claim 1, wherein the outer side of the collar plug is inclined at 45 °.
5. The pipe plug of claim 1, wherein the outer side of the inner ring retaining ring is provided with graduations.
6. A pipe plug for a measuring instrument according to any one of claims 1 to 5, wherein a shield extends from the end of the outer ring plug portion furthest from the inner ring fixing portion in a direction away from the inner ring fixing portion.
7. The pipe plug of any one of claims 1 to 5, wherein the outer ring plug portion and the inner ring fixing portion are high temperature resistant members.
8. A method of positioning a probe based on a pipe plug of a measuring instrument according to any one of claims 1 to 7, comprising the steps of:
measuring to obtain the required extending length R of the detecting piece in the pipeline to be detected and the caliber D of a measuring port on the pipeline to be detected;
inserting the detecting piece into the connecting through hole, so that the distance L between the inner end face of the detecting piece and the outer end face of the inner ring fixing part meets the following relation:
R+B-E<L<R+C+B- E
E=(D-d)/ (2*tanα)
wherein B is the length of the outer ring blocking part, E is the interval from the inner end surface of the outer ring blocking part to a measuring port on the pipeline to be measured, d is the outer diameter of the inner end surface of the outer ring blocking part, C is the length of the inner ring fixing part, and alpha is the inclination angle of the outer side surface of the outer ring blocking part;
moving the inner ring fixing portion in the outer ring blocking portion until a space S between an outer end surface of the inner ring fixing portion and an outer end surface of the outer ring blocking portion satisfies the following relation:
S=L-R-B+E
and starting measurement after the outer ring blocking part blocks the measuring port.
9. The method according to claim 8, wherein if a scale is provided on an outer side surface of the inner ring fixing ring and a start point of the scale is an outer end surface of the inner ring fixing portion, the inner ring fixing portion is moved in the outer ring blocking portion, and movement is stopped when the scale reaches L-R-b+e.
CN202310936418.2A 2023-07-28 2023-07-28 Positioning method for pipeline plug and detection part of measuring instrument Active CN116658728B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6857328B1 (en) * 2002-05-23 2005-02-22 Sample probe for aerosol sampling apparatus
CN202383056U (en) * 2011-12-28 2012-08-15 成都兴油科技开发有限公司 High pressure and corrosion resistance probe installation device
CN203717908U (en) * 2013-12-18 2014-07-16 天津鹰麟节能科技发展有限公司 Smoke sampling port sealing structure
CN208847521U (en) * 2018-09-07 2019-05-10 中国石油大学(华东) A kind of novel sampling device for gas-solid fluidized environment
CN113465997A (en) * 2021-07-22 2021-10-01 安徽工业大学 Rotary multifunctional flue gas sampling gun
CN218995298U (en) * 2022-11-07 2023-05-09 天津聚格环境科技有限公司 Flue gas concentration detection device convenient to installation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6857328B1 (en) * 2002-05-23 2005-02-22 Sample probe for aerosol sampling apparatus
CN202383056U (en) * 2011-12-28 2012-08-15 成都兴油科技开发有限公司 High pressure and corrosion resistance probe installation device
CN203717908U (en) * 2013-12-18 2014-07-16 天津鹰麟节能科技发展有限公司 Smoke sampling port sealing structure
CN208847521U (en) * 2018-09-07 2019-05-10 中国石油大学(华东) A kind of novel sampling device for gas-solid fluidized environment
CN113465997A (en) * 2021-07-22 2021-10-01 安徽工业大学 Rotary multifunctional flue gas sampling gun
CN218995298U (en) * 2022-11-07 2023-05-09 天津聚格环境科技有限公司 Flue gas concentration detection device convenient to installation

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