CN108344437B - Two-phase flow measuring device - Google Patents
Two-phase flow measuring device Download PDFInfo
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- CN108344437B CN108344437B CN201710062630.5A CN201710062630A CN108344437B CN 108344437 B CN108344437 B CN 108344437B CN 201710062630 A CN201710062630 A CN 201710062630A CN 108344437 B CN108344437 B CN 108344437B
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- 230000005514 two-phase flow Effects 0.000 title claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 62
- 125000006850 spacer group Chemical group 0.000 claims description 34
- 238000004891 communication Methods 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 4
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- 238000002360 preparation method Methods 0.000 abstract description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
-
- 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
Abstract
The invention discloses a two-phase flow measuring device, comprising: the measuring device comprises a substrate, a measuring channel, a measuring device and a measuring device, wherein the substrate is internally limited with the measuring channel and is provided with an inlet and an outlet which are communicated with the measuring channel, the inner wall surface of the substrate comprises a first wall surface, a second wall surface, a third wall surface and a fourth wall surface, the first wall surface is opposite to the second wall surface, and the third wall surface is opposite to the fourth wall surface; one end of the plurality of emission electrodes is connected with the first wall surface, and the other end of the plurality of emission electrodes extends out of the second wall surface; the plurality of receiving electrodes and the plurality of transmitting electrodes are distributed at intervals in the axial direction of the measuring channel, one end of each of the plurality of receiving electrodes is connected with the third wall surface, the other end of each of the plurality of receiving electrodes extends out of the fourth wall surface, and projections of the plurality of transmitting electrodes and the plurality of receiving electrodes on the section of the measuring channel form a grid; and the insulating gasket is arranged in the matrix and positioned between the transmitting electrode and the receiving electrode to separate the transmitting electrode and the receiving electrode. According to the two-phase flow measuring device provided by the embodiment of the invention, the preparation is convenient.
Description
Technical Field
The invention relates to the field of two-phase flow measurement, in particular to a two-phase flow measurement device.
Background
Two-phase flow refers to a flow system with interphase interfaces where any two of the three phases solid, liquid, and gas are combined together. The two-phase flow phenomenon can occur in various pipelines such as a three-way pipe, a U-shaped pipe, an inclined pipe and the like. In the thermal hydraulic analysis of a reactor, two-phase flow phenomenon can cause oscillation of flow and power of the reactor core, and the two-phase flow phenomenon can threaten the safety of the reactor when serious. In addition, the measurement of parameters of the two-phase flow is of great significance to many experiments conducted in significant detail on CAP 1400. In the performance test of the passive core cooling system, two-phase flow exists in a main loop system, a passive waste heat discharging system, an automatic depressurization system, a pressure balance pipe, a fluctuation pipe and other systems and pipelines, and the measurement of the flow pattern of the two-phase flow in the systems and the pipelines has important significance for the observation of test phenomena and the research of thermal hydraulic mechanism. The traditional two-phase flow measurement modes such as ray, tracing, photographing and the like have the defects of unobvious measurement results, poor accuracy, complex post-treatment and the like.
In addition, the existing measuring sensor steel wire electrode is mainly packaged in an integrated mode, and if the steel wire is damaged in the long-term use process, the steel wire electrode cannot be detached or is difficult to replace; the mutual positions of the wire array electrodes are ensured by the steel wire fixing ends, and the requirements on the processing and the assembly of the steel wire fixing ends are high.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the above technical problems.
Therefore, the invention provides the two-phase flow measuring device, which has the advantages of visual measuring result and good accuracy.
According to an embodiment of the present invention, a two-phase flow measurement device includes: the measuring device comprises a substrate, a measuring channel, a measuring device and a measuring device, wherein the substrate is internally limited with the measuring channel and is provided with an inlet and an outlet which are communicated with the measuring channel, the inner wall surface of the substrate comprises a first wall surface, a second wall surface, a third wall surface and a fourth wall surface, the first wall surface is opposite to the second wall surface, and the third wall surface is opposite to the fourth wall surface; a plurality of emission electrodes, one ends of which are connected with the first wall surface and the other ends extend out from the second wall surface; the receiving electrodes and the transmitting electrodes are distributed at intervals in the axial direction of the measuring channel, one ends of the receiving electrodes are connected with the third wall surface, the other ends of the receiving electrodes extend out of the fourth wall surface, and projections of the transmitting electrodes and the receiving electrodes on the section of the measuring channel form a grid; and the insulating gasket is arranged in the matrix and positioned between the transmitting electrode and the receiving electrode to separate the transmitting electrode and the receiving electrode.
According to the two-phase flow measuring device provided by the embodiment of the invention, the transmitting electrodes and the receiving electrodes which are axially spaced and are arranged in the measuring channel in a crossing way are arranged, the cross section of the container or the pipeline to be measured is divided into the measuring points in a grid shape by the grid-shaped transmitting electrodes and the grid-shaped receiving electrodes, the transmitting electrodes are sequentially activated during measurement, all the receiving electrodes are in a receiving state, and measurement information is acquired.
In addition, the two-phase flow measuring device according to the embodiment of the invention can also have the following additional technical characteristics:
according to one embodiment of the invention, the insulating spacer is formed in a ring shape, and an inner ring of the insulating spacer is in communication with the measurement channel.
According to one embodiment of the invention, the transmitting electrodes and the receiving electrodes are respectively positioned in two planes perpendicular to the axial direction of the measuring channel, the transmitting electrodes are arranged in parallel, the receiving electrodes are arranged in parallel, and the insulating gasket is provided with a plurality of positioning grooves corresponding to the positions of the transmitting electrodes or the receiving electrodes.
According to one embodiment of the invention, the insulating gasket comprises one insulating gasket, and the positioning grooves are respectively formed in two sides of the insulating gasket.
According to one embodiment of the present invention, the insulating spacer includes a first sheet body and a second sheet body, the first sheet body and the second sheet body are distributed along an axial direction of the measurement channel, and the positioning grooves are respectively provided on the first sheet body and the second sheet body.
According to one embodiment of the invention, the transmitting electrode and the receiving electrode are perpendicular to each other to form the grid, and the positioning groove on the first sheet body and the positioning groove on the second sheet body are perpendicular to each other.
According to one embodiment of the invention, the positioning groove is formed as a V-groove.
According to one embodiment of the invention, the insulating gasket is a mica gasket.
According to one embodiment of the invention, the base body is formed substantially cylindrically, the measuring channel being located in the center of the base body.
According to one embodiment of the invention, the grid formed by the projection of the transmitting electrode and the receiving electrode onto the cross section of the measuring channel is located within the measuring channel.
According to one embodiment of the present invention, the two-phase flow measurement device further includes: and the upper cover is detachably connected with the base body through bolts.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a two-phase flow measurement device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a two-phase flow measurement device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a partial structure of a two-phase flow measurement device according to an embodiment of the present invention;
FIG. 4 is another partial schematic diagram of a two-phase flow measurement device according to an embodiment of the present invention;
FIG. 5 is a schematic view of a first sheet of a two-phase flow measurement device according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a first blade of a two-phase flow measurement device according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a second sheet of the two-phase flow measurement device according to an embodiment of the present invention.
Reference numerals:
a two-phase flow measurement device 100;
a base body 10; a first wall surface 11; a second wall 12; a third wall surface 13; a fourth wall 14; a measurement channel 15; a through hole 16;
an emitter electrode 20; an insulating end 21;
a receiving electrode 30;
a data processing unit 40;
a fixing portion 50; a first insulating sleeve 51; a mounting portion 511; an elastic member 52; a second insulating sheath 53; a third insulating sleeve 54;
an upper cover 60;
an insulating spacer 70; a positioning groove 71; a first sheet 72; a second sheet 73.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A two-phase flow measurement device 100 according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 7, a two-phase flow measurement device 100 according to an embodiment of the present invention includes a base body 10, a plurality of transmitting electrodes 20, a plurality of receiving electrodes 30, and an insulating spacer 70.
Specifically, a measurement channel 15 is defined in the base 10, the base 10 has an inlet and an outlet communicating with the measurement channel 15, and the inner wall surface of the base 10 includes a first wall surface 11, a second wall surface 12, a third wall surface 13, and a fourth wall surface 14, the first wall surface 11 being disposed opposite to the second wall surface 12, and the third wall surface 13 being disposed opposite to the fourth wall surface 14. One end of the plurality of emitter electrodes 20 is connected to the first wall 11, and the other end protrudes from the second wall 12, the plurality of receiver electrodes 30 are spaced apart from the emitter electrodes 20 in the axial direction of the measurement channel 15, one end of the plurality of receiver electrodes 30 is connected to the third wall 13, and the other end protrudes from the fourth wall 14, and projections of the plurality of emitter electrodes 20 and the plurality of receiver electrodes 30 on the cross section of the measurement channel 15 form a grid. An insulating spacer 70 is provided in the base body 10 between the transmitting electrode 20 and the receiving electrode 30 to separate the transmitting electrode 20 and the receiving electrode 30.
In other words, the two-phase flow measuring device 100 according to the embodiment of the present invention is mainly composed of a base 10, a plurality of transmitting electrodes 20 and a plurality of receiving electrodes 30, wherein the base 10 is adapted to be mounted in a container or a pipeline to be measured, and a measuring channel 15 adapted to be passed by a fluid in the container or the pipeline to be measured is provided in the base 10. The base 10 has four wall surfaces, namely, a first wall surface 11, a second wall surface 12, a third wall surface 13, and a fourth wall surface 14, two of the four wall surfaces being disposed opposite to each other, and the other two being disposed opposite to each other. One end of the plurality of emitter electrodes 20 may be elastically connected to the first wall 11, the other end thereof protrudes from the opposite second wall 12 to be connected to the data processing unit 40, and one end of the plurality of receiver electrodes 30 may be elastically connected to the third wall 13, the other end thereof protrudes from the opposite fourth wall 14 to be connected to the data processing unit 40.
The transmitting electrodes 20 and the receiving electrodes 30 are spaced apart in the axial direction of the measurement channel 15, and the transmitting electrodes 20 and the receiving electrodes 30 are arranged to intersect to form a grid structure in projection on a cross section of the measurement channel 15. The cross arrangement of the transmitting electrode 20 and the receiving electrode 30 can divide the cross section of the container or the pipeline to be measured into the measuring points in the shape of a grid, when in measurement, the transmitting electrode 20 is sequentially activated, all the receiving electrodes 30 are in a receiving state, and measurement information is acquired.
In addition, one ends of the transmitting electrode 20 and the receiving electrode 30 are respectively and elastically connected with the first wall surface 11 and the third wall surface 13, the elastic connection structure can supplement electrode deformation generated by thermal expansion, and the elastic and micro plastic deformation of the compensating electrode in the use process can not influence the use due to overlap joint between the transmitting electrode 20 and the receiving electrode 30 caused by the electrode deformation, so that the problems that the electrode is easy to deform and is not suitable for high-temperature and high-pressure working conditions when being used for a long time are solved.
Therefore, according to the two-phase flow measuring device 100 of the embodiment of the invention, through arranging the transmitting electrode 20 and the receiving electrode 30 which are axially spaced and are arranged in a measuring channel 15 in a crossing way, the cross section of a container or a pipeline to be measured is divided into the measuring points in a grid shape by the grid-shaped transmitting electrode 20 and the grid-shaped receiving electrode 30, when in measurement, the transmitting electrode 20 is sequentially activated, all the receiving electrodes 30 are in a receiving state, and measurement information is acquired, and the two-phase measuring device with the structure can measure the electrical property of a medium at each measuring point, so that the fluid distribution of the cross section under transient state is obtained, the fluid dynamic three-dimensional model of the cross section is reproduced through post-processing software, the measuring result is more visual, the accuracy is better, the insulating gasket 70 is adopted to position and separate the transmitting electrode 20 and the receiving electrode 30, the dependence on the processing technology of the positioning ends of the transmitting electrode 20 and the receiving electrode 30 is reduced, the preparation is convenient, and the cost is low.
The separation structure of the transmitting electrode 20 and the receiving electrode 30 according to the embodiment of the present invention is specifically described below.
As shown in fig. 5 and 7, in the present application, the insulating spacer 70 is formed in a ring shape, and the inner ring of the insulating spacer 70 is in communication with the measurement channel 15.
That is, in the present application, the insulating spacer 70 is an annular spacer provided in the base body 10, and the inner ring of the insulating spacer 70 is coaxial with the measurement channel 15. Thus, the insulating spacer 70 of this structure does not affect the normal flow of fluid in the measurement channel 15 while spacing the emitter electrode 20 from the receiver electrode 30.
According to an embodiment of the present invention, the plurality of transmitting electrodes 20 and the plurality of receiving electrodes 30 are respectively located in two planes perpendicular to the axial direction of the measuring channel 15, the plurality of transmitting electrodes 20 are arranged in parallel, the plurality of receiving electrodes 30 are arranged in parallel, and the insulating spacer 70 is provided with a plurality of positioning grooves 71 corresponding to the positions of the transmitting electrodes 20 or the receiving electrodes 30.
Specifically, in this application, the insulating spacer 70 is further provided with a positioning groove 71, and the insulating spacer 70 can space the transmitting electrodes 20 and the receiving electrodes 30 while spacing the transmitting electrodes 20 and the receiving electrodes 30, so that the transmitting electrodes 20 and the receiving electrodes 30 are not contacted, and the transmitting electrodes 20 and the receiving electrodes 30 are not contacted with each other.
In some embodiments of the present invention, the insulating spacer 70 includes one insulating spacer 70, and positioning grooves 71 are formed at both sides of the insulating spacer 70. In other embodiments of the present invention, the insulating spacer 70 includes a first sheet 72 and a second sheet 73, where the first sheet 72 and the second sheet 73 are distributed along the axial direction of the measurement channel 15, and positioning grooves 71 are respectively provided on the first sheet 72 and the second sheet 73. Preferably, the emitter electrode 20 and the receiver electrode 30 are perpendicular to each other to form a grid, and the positioning grooves 71 on the first sheet 72 and the positioning grooves 71 on the second sheet 73 are perpendicular to each other.
In other words, in the present application, the number of insulating spacers 70 may be one, the positioning grooves 71 are respectively provided on two sides of one insulating spacer 70, the plurality of transmitting electrodes 20 are spaced apart in the positioning grooves 71 on one side of the insulating spacer 70, and the plurality of receiving electrodes 30 are spaced apart in the positioning grooves 71 on the other side of the insulating spacer 70.
The insulating spacer 70 may also include a first sheet 72 and a second sheet 73 (as shown in fig. 5 and 7), where the first sheet 72 and the second sheet 73 are distributed along the axial direction of the measurement channel 15, the first sheet 72 is provided with a positioning slot 71 on a side facing the emitter electrode 20, the second sheet 73 is provided with a positioning slot 71 on a side facing the receiver electrode 30, and the positioning slot 71 on the first sheet 72 is perpendicular to the positioning slot 71 on the second sheet 72.
Thus, the distance between the emitter electrode 20 and the receiver electrode 30 can be ensured by the thickness of the insulating spacer 70, and the dimensional accuracy of the thickness of the insulating spacer 70 can be more easily achieved than the accuracy of the distance between the emitter electrode 20 and the receiver electrode 30 by spacing the holes, and the machining accuracy and the mounting process are less required.
In some embodiments of the present invention, the positioning groove 71 is formed as a V-groove. Preferably, the insulating spacer 70 is a mica spacer.
Therefore, the processing of the V-shaped groove is more convenient, the positioning accuracy is higher, and the insulating gasket 70 made of mica is better in insulating effect and more convenient to prepare.
According to one embodiment of the present invention, the plurality of transmitting electrodes 20 and the plurality of receiving electrodes 30 are respectively located in two planes perpendicular to the axial direction of the measurement channel 15, the plurality of transmitting electrodes 20 are arranged in parallel, and the plurality of receiving electrodes 30 are arranged in parallel.
That is, in the present application, the plurality of emitter electrodes 20 are located in the same plane, which is perpendicular to the axis of the measurement channel 15, the plurality of emitter electrodes 20 in the plane are parallel to each other, the plurality of receiver electrodes 30 are located in the same plane, which is also perpendicular to the axis of the measurement channel 15, and the plurality of receiver electrodes 30 in the plane are also parallel to each other.
Preferably, in some embodiments of the present invention, the transmitting electrode 20 and the receiving electrode 30 are formed perpendicular to each other to form a grid.
Specifically, as shown in fig. 2, in the present application, each of the transmitting electrodes 20 and each of the receiving electrodes 30 are vertically arranged, and the plurality of transmitting electrodes 20 and the plurality of receiving electrodes 30 intersect each other to form a matrix grid, and the cross section of the container or the pipe to be measured is divided into the measuring points in a matrix shape, so that the measuring accuracy of the transmitting electrodes 20 and the receiving electrodes 30 can be further improved.
According to one embodiment of the invention, the base body 10 is formed substantially cylindrically, the measuring channel 15 being located in the center of the base body 10. Further, a grid formed by projection of the transmitting electrode 20 and the receiving electrode 30 on the cross section of the measurement channel 15 is located within the measurement channel 15.
That is, as shown in fig. 2, matrix measuring points formed by crossing the transmitting electrode 20 and the receiving electrode 30 are all located in the measuring channel 15, and the fluid in the container or the pipe to be measured can uniformly flow through a plurality of measuring points when passing through the measuring channel 15, thereby more accurate measurement can be performed on the fluid, and the measuring accuracy is further improved.
The structure in which the transmitting electrode 20 and the receiving electrode 30 are elastically connected to the base 10 will be described in detail.
As shown in fig. 2 to 4, according to one embodiment of the present invention, a plurality of through holes 16 corresponding in position are provided in the first wall 11, the second wall 12, the third wall 13 and the fourth wall 14, respectively, one end of the emitter electrode 20 is provided in the through hole 16 of the first wall 11 and the other end protrudes from the through hole 16 in the second wall 12, and one end of the receiver electrode 30 is provided in the through hole 16 of the third wall 13 and the other end protrudes from the through hole 16 in the fourth wall 14.
Specifically, the through holes 16 of the first wall 11 and the third wall 13 are provided therein with a fixing portion 50, a first insulating bush 51, and an elastic member 52.
Wherein, the fixed part 50 is arranged at one end of the through hole 16 facing the measuring channel 15, the first insulating sleeve 51 is movably arranged in the through hole 16 along the axial direction of the through hole 16 and is spaced from the fixed part 50, one ends of the transmitting electrode 20 and the receiving electrode 30 respectively penetrate through the fixed part 50 to be connected with the first insulating sleeve 51 in an insulating way, and the elastic piece 52 is stopped between the fixed part 50 and the first insulating sleeve 51.
Specifically, as shown in fig. 2, taking the emitter electrode 20 as an example, in the example shown in fig. 2, the emitter electrode 20 is an electrode extending along the left-right direction, the first wall 11 and the second wall 12 are opposite to each other along the left-right direction, the first wall 11 is located at the left side in the figure, the second wall 12 is located at the right side in the figure, a plurality of through holes 16 extending along the left-right direction are respectively arranged on the first wall 11 and the second wall 12, the number of through holes 16 corresponds to the number of the required emitter electrodes 20, the left end of each emitter electrode 20 is respectively and correspondingly arranged in one through hole 16, the right end of each emitter electrode 20 is respectively and correspondingly arranged in one through hole 16, and the plurality of through holes 11 on the first wall 11 and the second wall 12 are uniformly and parallelly distributed along the up-down direction. The through hole 16 in the first wall 11 is provided with a fixing portion 50, a first insulating sleeve 51 and an elastic member 52.
The fixing portion 50 is respectively disposed at the right end of each through hole 16 on the first wall 11, the first insulating sleeve 51 is movably disposed in each through hole 16 on the first wall 11 along the left-right direction, the elastic member 52 is disposed between the first insulating sleeve 51 and the fixing portion 50, and the left end of the emitter electrode 20 passes through the fixing portion 50 to be connected with the first insulating sleeve 51.
In a normal state, the elastic member 52 is in a released state, and both ends of the elastic member 52 are respectively abutted against the fixing portion 50 and the first insulating cover 51. When the emitter electrode 20 is deformed during use, the emitter electrode 20 pulls the first insulating sleeve 51, and the first insulating sleeve 51 presses the elastic member 52 to move rightward, so that elastic and micro-plastic deformation of the emitter electrode 20 during use is compensated.
In some embodiments of the present invention, the transmitting electrode 20 and the receiving electrode 30 are steel wires, and the insulating ends 21 are respectively disposed at one ends of the transmitting electrode 20 and the receiving electrode 30, and the mounting portion 511 is disposed in an end of the first insulating sleeve 51 facing away from the measuring channel 15, and the insulating ends 21 are connected to the mounting portion 511 through the first insulating sleeve 51.
As shown in fig. 2 and 3, in the present application, the transmitting electrode 20 and the receiving electrode 30 are steel wire electrodes, and also taking the transmitting electrode 20 as an example, the left end of the transmitting electrode 20 is provided with an insulating end 21, the insulating end 21 is formed into a sphere shape, the left end of the first insulating sleeve 51 is provided with a mounting portion 511, and the insulating end 21 passes through the mounting portion 511 to be connected with the mounting portion 511 of the first insulating sleeve 51 so as to realize connection of the transmitting electrode 20 and the first insulating sleeve 51.
Therefore, the elastic connection end of the emitter electrode 20 is placed in the first insulating sleeve 51 by adopting the spherical insulating end 21, the emitter electrode 20 is not directly contacted with the elastic piece 52, on one hand, insulation between the emitter electrode 20 and the base body 10 is ensured, and on the other hand, the structure is convenient for replacement when the emitter electrode 20 is damaged.
Specifically, according to one embodiment of the present invention, the elastic member 52 is a spring, both ends of which are respectively stopped against the fixing portion 50 and the first insulating bush 51, and the insulating ends are connected to the first insulating bush 51 through the spring. Therefore, the first insulating sleeve 51 and the fixing part 50 are more reasonable in matching structure, and more convenient to assemble and replace.
Further, in some embodiments of the present invention, the two-phase flow measurement device 100 further includes a second insulating sleeve 53, the second insulating sleeve 53 extending along the axial direction of the through hole 16 and disposed in the spring and fixing portion 50, and the insulating end 21 is connected to the first insulating sleeve 51 through the second insulating sleeve 53.
That is, as shown in fig. 2 and 3, in this application, a second insulation sleeve 53 is further provided where the emitter electrode 20 is fitted with the through hole 16, the second insulation sleeve 53 sequentially passes through the fixing portion 50 and the spring, and the insulation end 21 of the emitter electrode 20 passes through the second insulation sleeve 53 to be connected with the mounting portion 511.
Thereby, the insulating end 21 of the emitter electrode 20 passes through the second insulating sleeve 53 to be connected with the first insulating sleeve 51, the elastic piece 52 of the emitter electrode 20 is not in direct contact, the mechanical structure is simple, and the replacement after the damage of the emitter electrode 20 can be realized.
According to one embodiment of the present invention, the third insulating sheath 54 is disposed in the through hole 16 of the second wall 12 and the fourth wall 14, and the other ends of the emitter electrode 20 and the receiver electrode 30 protrude out of the base body 10 through the third insulating sheath 54.
Specifically, as shown in fig. 2 and fig. 4, taking the transmitting electrode 20 as an example, the right end of the transmitting electrode 20 passes through the third insulating sleeve 54 in the through hole 16 on the second wall 12 and extends out of the substrate 10 to be connected with the external data processing unit 40, so that insulation between the transmitting electrode 20 and the substrate 10 can be ensured, and sealing glue is filled between the right end of the transmitting electrode 20 and the third insulating sleeve 53 for sealing, so that sealing effect can be ensured.
In this application, the elastic connection and assembly of the transmitting electrode 20 and the base 10 are specifically described by taking the transmitting electrode 20 as an example, and the assembly structure of the receiving electrode 30 and the base 10 is similar, so that detailed description will not be given.
In some embodiments of the present invention, the two-phase flow measurement device 100 further includes an upper cover 60, and the upper cover 60 is detachably coupled to the base 10 by bolts.
Specifically, as shown in fig. 1, the base 10 may be formed in a base flange structure, and the upper cover 60 is detachably coupled to the base 10 by bolts, and the upper cover 60 of the structure is easily detached, compared to a conventional integrated package structure, thereby facilitating inspection or replacement of the emitter electrode 20 and the receiver electrode 30 within the base 10.
Other configurations and operations of two-phase flow measurement device 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, 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 implicitly indicating the 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 connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication 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 "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although 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 variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.
Claims (11)
1. A two-phase flow measurement device, comprising:
the measuring device comprises a substrate, a measuring channel, a measuring device and a measuring device, wherein the substrate is internally limited with the measuring channel and is provided with an inlet and an outlet which are communicated with the measuring channel, the inner wall surface of the substrate comprises a first wall surface, a second wall surface, a third wall surface and a fourth wall surface, the first wall surface is opposite to the second wall surface, and the third wall surface is opposite to the fourth wall surface;
a plurality of emission electrodes, one ends of which are connected with the first wall surface and the other ends extend out from the second wall surface;
the receiving electrodes and the transmitting electrodes are distributed at intervals in the axial direction of the measuring channel, one ends of the receiving electrodes are connected with the third wall surface, the other ends of the receiving electrodes extend out of the fourth wall surface, and projections of the transmitting electrodes and the receiving electrodes on the section of the measuring channel form a grid;
and the insulating gasket is arranged in the matrix and positioned between the transmitting electrode and the receiving electrode to separate the transmitting electrode and the receiving electrode.
2. The two-phase flow measurement device according to claim 1, wherein the insulating spacer is formed in a ring shape, and an inner ring of the insulating spacer is in communication with the measurement channel.
3. The two-phase flow measuring device according to claim 1, wherein the plurality of transmitting electrodes and the plurality of receiving electrodes are respectively located in two planes perpendicular to the axial direction of the measuring channel, the plurality of transmitting electrodes are arranged in parallel, the plurality of receiving electrodes are arranged in parallel, and the insulating spacer is provided with a plurality of positioning grooves corresponding to the positions of the transmitting electrodes or the receiving electrodes.
4. The two-phase flow measurement device according to claim 3, wherein the insulating spacer comprises one piece, and the positioning grooves are respectively formed on two sides of the insulating spacer.
5. The two-phase flow measurement device of claim 3, wherein the insulating spacer comprises a first sheet body and a second sheet body, the first sheet body and the second sheet body are distributed along the axial direction of the measurement channel, and the positioning grooves are respectively formed in the first sheet body and the second sheet body.
6. The two-phase flow measurement device of claim 5, wherein the emitter electrode and the receiver electrode are perpendicular to each other to form the grid, and the positioning slot on the first plate is perpendicular to the positioning slot on the second plate.
7. The two-phase flow measurement device of claim 3, wherein the positioning groove is formed as a V-groove.
8. The two-phase flow measurement device of claim 1, wherein the insulating gasket is a mica gasket.
9. The two-phase flow measurement device of claim 1, wherein the base is formed in a generally cylindrical shape, and the measurement channel is located in a center of the base.
10. The two-phase flow measurement device of claim 1, wherein the grid formed by the projection of the transmitting electrode and the receiving electrode onto the cross-section of the measurement channel is located within the measurement channel.
11. The two-phase flow measurement device of claim 1, further comprising: and the upper cover is detachably connected with the base body through bolts.
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| CN108534835B (en) * | 2018-05-07 | 2020-05-19 | 中国核动力研究设计院 | Two-phase flow interface parameter measuring method |
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| CN1854726A (en) * | 2004-06-29 | 2006-11-01 | 西安交通大学 | Two-phase fluid grid and capacitor chromatography imaging method |
| CN102998343A (en) * | 2012-12-05 | 2013-03-27 | 中国科学技术大学 | Two-phase flow tomography system based on array-type monopole conducting probe |
| CN103776875A (en) * | 2014-01-23 | 2014-05-07 | 天津大学 | Four-section distributed conductivity sensor for two-phase flow detection |
| CN207007213U (en) * | 2017-01-23 | 2018-02-13 | 国核华清（北京）核电技术研发中心有限公司 | Two-phase flow measurement device |
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| DE102005019739B3 (en) * | 2005-04-28 | 2006-10-26 | Forschungszentrum Rossendorf E.V. | Grid sensor for measuring the electric conductivity of a medium flowing in a tube or pipe especially under high temperature and pressure |
| DE102006019178B4 (en) * | 2006-04-21 | 2009-04-02 | Forschungszentrum Dresden - Rossendorf E.V. | Arrangement for the two-dimensional measurement of different components in the cross-section of a multiphase flow |
| FR2978828B1 (en) * | 2011-08-02 | 2013-09-06 | Snecma | MULTI-ELECTRODE SENSOR FOR DETERMINING THE GAS CONTENT IN A DIPHASIC FLOW |
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| CN1854726A (en) * | 2004-06-29 | 2006-11-01 | 西安交通大学 | Two-phase fluid grid and capacitor chromatography imaging method |
| CN102998343A (en) * | 2012-12-05 | 2013-03-27 | 中国科学技术大学 | Two-phase flow tomography system based on array-type monopole conducting probe |
| CN103776875A (en) * | 2014-01-23 | 2014-05-07 | 天津大学 | Four-section distributed conductivity sensor for two-phase flow detection |
| CN207007213U (en) * | 2017-01-23 | 2018-02-13 | 国核华清（北京）核电技术研发中心有限公司 | Two-phase flow measurement device |
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