WO2022218649A1 - Koppelelement für eine vorrichtung zur bestimmung und/oder überwachung einer prozessgrösse - Google Patents
Koppelelement für eine vorrichtung zur bestimmung und/oder überwachung einer prozessgrösse Download PDFInfo
- Publication number
- WO2022218649A1 WO2022218649A1 PCT/EP2022/057322 EP2022057322W WO2022218649A1 WO 2022218649 A1 WO2022218649 A1 WO 2022218649A1 EP 2022057322 W EP2022057322 W EP 2022057322W WO 2022218649 A1 WO2022218649 A1 WO 2022218649A1
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- WO
- WIPO (PCT)
- Prior art keywords
- coupling element
- base body
- container
- contact surface
- bore
- Prior art date
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 107
- 238000010168 coupling process Methods 0.000 title claims abstract description 107
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008569 process Effects 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000010146 3D printing Methods 0.000 claims description 2
- 229910052582 BN Inorganic materials 0.000 claims description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 10
- 230000008901 benefit Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 101100522110 Oryza sativa subsp. japonica PHT1-10 gene Proteins 0.000 description 1
- 101100522109 Pinus taeda PT10 gene Proteins 0.000 description 1
- 230000005678 Seebeck effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
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- 229910052697 platinum Inorganic materials 0.000 description 1
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- 230000005676 thermoelectric effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
- G01K1/18—Special arrangements for conducting heat from the object to the sensitive element for reducing thermal inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
Definitions
- the invention relates to a coupling element for a device for determining and/or monitoring a process variable, in particular the temperature, the flow rate or the flow rate, of a medium in a container for attachment to the container and a corresponding device with a coupling element according to the invention.
- the container is, for example, a container or a pipeline.
- thermometers which, in order to measure the temperature, measure the expansion of a liquid, a gas or a solid with a known
- thermometers especially pyrometers, use the thermal radiation of a substance to determine its temperature. The measurement principles on which they are based have each been described in a large number of publications.
- thermistors also referred to as NTC thermistors
- thermistors also referred to as NTC thermistors
- a sensor element provided with connecting wires and applied to a carrier substrate is used, for example, with the rear side of the carrier substrate usually being metallically coated.
- resistance elements which are provided for example by platinum elements, are used as sensor elements, which are also commercially available under the designations PT10, PT100 and PT1000, among others.
- thermocouples In the case of temperature sensors in the form of thermocouples, on the other hand, the temperature is determined by a thermal voltage that arises between the thermowires made of different materials and connected on one side.
- Thermocouples according to DIN standard IEC584, eg thermocouples, are usually used to measure the temperature of type K, J, N, S, R, B, T or E are used as temperature sensors.
- other pairs of materials in particular those with a measurable Seebeck effect, are also possible.
- the accuracy of the temperature measurement depends sensitively on the respective thermal contacts and the prevailing heat conduction.
- thermometer Heat flows between the medium, the container in which the medium is located, the thermometer and the process environment play a crucial role here.
- the time it takes for a thermometer to respond to a change in temperature is also known as the thermometer's response time.
- a high measurement accuracy can be achieved in particular when the temperature sensor is immersed in the respective medium.
- Numerous thermometers have become known in which the temperature sensor is brought into contact more or less directly with the respective medium. A comparatively good coupling between the medium and the temperature sensor can be achieved in this way.
- thermometers have also become known which can be attached from the outside/inside to the respective container in which the medium is located. Such devices, also known as surface thermometers or contact sensors, are out
- thermocouples with temperature sensors in the form of thermocouples are often used as surface or skin point thermometers
- thermometers for non-invasive temperature measurement have become known that allow easy replacement of the temperature sensors.
- thermometers for non-invasive temperature measurement have become known, as described for example in the documents US2016/0047697A1, DE102005040699B3, EP3230704B1 or EP2038625B1.
- a central problem with non-invasive temperature determination is the heat dissipation from the process to the environment.
- Such field devices typically include at least two sensor elements with at least one temperature sensor and at least one heating element or heatable temperature sensor.
- the sensor elements can be introduced into the respective pipeline as well as integrated into or onto a measuring tube (non-invasive construction).
- the invention is based on the object
- the object on which the invention is based is achieved by a coupling element for a device for determining and/or monitoring a process variable, in particular the temperature, the flow rate or the flow rate, of a medium in a container for attachment to the container, which coupling element has a Includes base body with a contact surface, which is designed such that the base body can be placed flat against the container by means of the contact surface, the base body having a bore for receiving a sensor element of the device for determining and/or Monitoring the process variable comprises, and wherein a longitudinal axis of the bore is tangent to the contact surface.
- the coupling element is used for the targeted distribution of heat from the process to the sensor element and thus to improve the thermal contact or to ensure thermal equilibrium between the wall of the container and the sensor element.
- the bore is designed to accommodate the sensor element, in particular a temperature sensor, which is preferably arranged in a measuring insert.
- the sensor element that can be introduced into the bore is accordingly arranged or aligned relative to the container by the coupling element.
- a tangential course of the bore relative to the contact surface is understood below to mean different possible arrangements which have in common that a longitudinal axis runs through the bore in a plane parallel to a tangent to the typically curved wall of the container.
- a distance between a particular imaginary point of contact of the tangent and the longitudinal axis of the bore or an angle between the tangent and the longitudinal axis of the bore can be different.
- numerous other variants are conceivable for the configuration of the coupling element, in particular of the sensor element that can be introduced into the bore, relative to the wall of the container, which also fall within the scope of the present invention.
- the process variable, in particular the temperature, the flow rate or the flow rate, of the medium is accordingly determined indirectly via a wall of the container.
- a contact surface between the sensor element and a section of the wall of the container facing the sensor element is significantly enlarged.
- the conduction of heat from the medium via the wall of the container to the sensor element and possibly present connecting lines contacting the sensor element is significantly increased.
- a temperature gradient is reduced.
- the avoidance of so-called heat conduction errors is a fundamental problem in the field of industrial temperature determination, regardless of whether a thermometer or a flow meter is used.
- the so-called minimum immersion depth in the respective process is often mentioned in this context should usually be at least ten times the diameter of the thermometer. If the thermal contact has deteriorated, for example through the use of a protective tube, the minimum immersion depth should be more than ten times the diameter of the thermometer. In the case of block calibrators, the minimum immersion depth is usually fifteen times the diameter of the reference thermometer used for calibration.
- the coupling element can have one or more bores, into which one or more sensor elements can be introduced. It is also conceivable to introduce several sensor elements into the same bore. In addition, a unit for heating and/or cooling an area surrounding the sensor element can also be introduced into a bore, together with or separately from a sensor element.
- the device can optionally also have electronics. Alternatively, the electronics can also be a separate component that can be connected to the device.
- the coupling element can be fastened to the container by means of all fastening means that are customary and suitable for a person skilled in the art, such as, for example, clamps or pipe clamps.
- the measuring insert is placed on the container, for example perpendicular to a longitudinal axis of the container and accordingly comes into thermal contact via the end face
- the measuring insert is tangentially attached by means of the coupling element guided past a wall of the container.
- the thermal contact between the sensor element and the wall of the container takes place via a lateral surface of the measuring insert.
- the coupling element according to the invention causes a significantly improved heat conduction between the medium and the Sensor element, and with it a significantly improved measurement accuracy with regard to the determination of the process variable, in particular the temperature of the medium or a variable related to the temperature, such as the flow rate or the flow rate. This is achieved in that a distance between the wall of the container and the
- Sensor element is minimal in the solution according to the invention by means of the coupling element in the region of a lateral surface of the sensor element.
- the distance can be minimized in a particularly simple manner, which results in improved heat conduction. It is advantageously possible to achieve a distance that is significantly smaller than a corresponding distance in other arrangements of the sensor element relative to the container.
- the coupling element according to the invention can be used to achieve surface contact with the wall of the container, which also increases the heat conduction from the medium to the sensor element and, as a result, improves the measurement accuracy.
- the device comprises at least one reference element for in situ calibration and/or validation of at least the temperature sensor, which is attached to the outer wall of the container, and which reference element consists at least partially of at least one material, for which material the calibration is required of the first temperature sensor relevant temperature range at least one phase transition occurs at at least one predetermined phase transition temperature, for which phase transition the material remains in the solid phase.
- reference element for in situ calibration and/or validation of at least the temperature sensor, which is attached to the outer wall of the container, and which reference element consists at least partially of at least one material, for which material the calibration is required of the first temperature sensor relevant temperature range at least one phase transition occurs at at least one predetermined phase transition temperature, for which phase transition the material remains in the solid phase.
- a further configuration includes that the contact area is designed to correspond to a surface. In this way, a precisely fitting arrangement of the coupling element relative to the wall of the container can be achieved.
- Typical receptacles ie containers or pipelines, have curved surfaces. In the case of a convex surface of a wall of the container, a concave contact surface of the coupling element is therefore advantageous, for example.
- the contact surface consists at least partially of a deformable, in particular flexible or ductile, material which is designed in such a way that it can be adapted to a contour of the outer wall of the container. The contact surface can be adjusted accordingly to the surface of the wall of the container. This has the advantage that small differences in nominal size, Shape deviations and / or unevenness of the surface of the respective wall of the container can be compensated by the coupling element.
- An embodiment of the coupling element includes that the bore is closed in an end area, which end area is in particular within a
- the bore is therefore a blind hole into which the sensor element can be inserted.
- the coupling element comprises a shank which extends out of the base body and ends in the bore.
- the shank is parallel to the bore and coplanar with the bore. It is preferably a tubular, in particular cylindrical, element for accommodating the measuring insert.
- the shank can be attached to the base body or can be made in one piece with the base body.
- the shaft serves to improve heat conduction or heat conduction from the process to the measuring insert. In particular, by using a shank it can be achieved that a region around the measuring insert, in which an essentially homogeneous temperature distribution can be achieved, can be enlarged.
- the coupling element is designed and/or arranged in such a way that a longitudinal axis of the container, in particular a pipeline, and a longitudinal axis of the bore are arranged at a predeterminable angle, in particular perpendicular to one another.
- An angled arrangement of the bore relative to the longitudinal axis of the container allows particularly simple handling or simple assembly or removal of the sensor element into or out of the bore.
- the coupling element comprises a pipe section which is arranged adjacent to the contact surface, which pipe section for
- the pipeline section and the coupling element can either be subsequently connected to one another or manufactured in one piece from the outset.
- it is basically a coupling element in the form of a T-piece for a pipeline.
- a further configuration includes that in the area of the contact surface a unit comprising at least partially a material with anisotropic thermal conductivity, preferably a material at least partially containing carbon, in particular graphite or hexagonal boron nitride, is arranged, or the base body is arranged in a region or in the area of the contact surface from the Material with anisotropic thermal conductivity.
- a unit comprising at least partially a material with anisotropic thermal conductivity, preferably a material at least partially containing carbon, in particular graphite or hexagonal boron nitride, is arranged, or the base body is arranged in a region or in the area of the contact surface from the Material with anisotropic thermal conductivity.
- thermal insulation made of a thermally insulating material is arranged in a region of the base body facing away from the contact surface and the bore, which at least partially surrounds the base body, or the base body consists of the thermally insulating material in this region. Accordingly, this configuration includes thermal insulation from the surroundings of the coupling element and the container.
- a further configuration of the coupling element includes that the base body consists of a thermally conductive material in a region facing the contact surface and the bore. This measure serves to further improve the heat conduction from the medium or from the wall of the container to the sensor element.
- the base body is made up of at least two components, in particular in the form of a layered structure. It is therefore a multi-component or multi-layer structure.
- a further embodiment includes that the base body is made at least partially from a sintered material or a composite material.
- a sintered material it is also advantageous if the sintered material or composite material contains, at least in a partial area, a material with anisotropic thermal conductivity, in particular a material containing carbon, for example graphite. It is also conceivable that the unit containing the material with the anisotropic
- the base body can also be a sintered body made of two or more layers. It is also conceivable to produce the base body from a sintered material, in which an additional, second material is introduced at least partially, in particular completely. In particular, this additional material can be introduced at least partially into the pores of the sintered material.
- This material can be graphite, for example, the graphite being used, for example, in addition to or as an alternative to the above-mentioned function of targeted heat conduction
- Solid lubricant can be used, a contact resistance between the base body and the container or the base body and the measuring insert can be reduced by soft solid lubricant. It should be pointed out that, in addition to graphite, other materials, in particular also as a solid lubricant, can also be considered and also fall within the scope of the present invention.
- the coupling element is designed in one piece and is produced in particular by means of an additive manufacturing process, preferably by means of a 3D printing process.
- the coupling element has at least two coupling components, in particular manufactured separately from one another.
- the coupling element finally includes fastening means for fastening the base body to the container.
- the fastening means are preferably at least partially an integral part of the coupling element.
- the fastening means can be means for producing a clamping screw connection, a screw connection, a spring connection or the like.
- the present invention also includes scope for design with regard to the size of the coupling element relative to the diameter of the container.
- the coupling element can be both a comparatively large-volume component and also have a compact, in particular shaft-like or bowl-like shape.
- the coupling element, in particular the base body can also be designed in one piece or in several pieces. It is an advantage of the coupling element according to the invention that no changes to the field device itself are necessary to implement a non-invasive arrangement of a field device.
- a typical thermometer measuring insert can be used and inserted into the bore of the coupling element.
- the object on which the invention is based is also achieved by a device for determining and/or monitoring a process variable, in particular the temperature, the flow rate or the flow rate, of a medium in a container comprising a sensor element and a coupling element according to at least one of the preceding claims.
- the sensor element is preferably a temperature sensor, in particular in the form of a resistance element or a thermocouple.
- the sensor element typically also has connection lines, which can also be introduced at least partially into the bore of the coupling element. That
- the sensor element and the at least one connecting line are, for example, part of a measuring insert, in particular a casing element, which is introduced into the bore of the base body of the coupling element.
- the device preferably also comprises a heating element which can be attached to the outer wall of the container, in particular by means of the coupling element.
- the sensor element and an area surrounding the sensor element can be heated to a predeterminable temperature by means of the heating unit.
- the term flow includes both a volume flow and a mass flow of the medium.
- a flow velocity or flow rate of the medium can also be determined.
- the flow can be determined in two different ways.
- a sensor element is heated in such a way that its temperature remains essentially constant.
- the medium properties are known and at least temporarily constant, such as the medium temperature, its density or composition
- the mass flow rate of the medium through the pipeline can be determined using the heating power required to keep the temperature at the constant value.
- the temperature of the medium is understood to mean that temperature which the medium has without an additional heat input from a heating element.
- the heating element is operated with constant heating power and the temperature of the medium is measured downstream of the heating element. In this case, the measured temperature of the medium provides information about the mass flow.
- other measuring principles have also become known, for example so-called transient methods in which the heating power or the temperature are modulated.
- the heating element can be designed, for example, in the form of a resistance heater, which, via the conversion of electrical power supplied to them, e.g. B. as a result of an increased power supply, are heated.
- a resistance heater which, via the conversion of electrical power supplied to them, e.g. B. as a result of an increased power supply, are heated.
- thermometer 1 a thermometer for non-invasive temperature measurement according to the prior art
- thermometer 1 shows a schematic illustration of a thermometer 1 according to the prior art with a measuring insert 3 and electronics 4 .
- the thermometer 1 is used to record the temperature T of a medium M, which is in a container 2, here in the form of a pipeline.
- the thermometer 1 does not protrude into the pipeline 2, but rather is placed on a wall W of the pipeline 2 from the outside for non-invasive temperature determination.
- the measuring insert 3 includes a sensor element in the form of a temperature sensor 5, which in the present case includes a temperature-sensitive element in the form of a resistance element.
- the temperature sensor 5 is electrically contacted via the connecting lines 6a, 6b and connected to the electronics 4.
- thermometer 1 shown has a compact design with integrated electronics 4
- the electronics 4 can also be arranged separately from the measuring insert 3 in other thermometers 1 .
- the temperature sensor 5 does not necessarily have to be a resistance element and the number of connection lines 6 used does not necessarily have to be two. Rather, the number of connection lines 6 can be suitably selected depending on the measuring principle used and the temperature sensor 5 used.
- thermometer 1 the measuring accuracy of such a thermometer 1 depends to a large extent on the respective materials used for the thermometer and on the respective, in particular thermal, contacts, in particular in the area of the temperature sensor 5 .
- the temperature sensor 5 is in direct thermal contact, i.e. via the measuring insert 3 and via the wall W of the container 2, with the medium M. Heat dissipation from the medium M to the environment, which can lead to an undesirable temperature gradient in the region of the temperature sensor 5, also plays a major role in this context.
- thermometer 1 In order to deal with these problems in a suitable manner, an alternative embodiment for a non-invasive determination of a process variable, for example by means of the thermometer 1, is proposed within the scope of the present invention, as shown in FIGS. 2-6 based on some preferred, exemplary configurations.
- the invention is based on the use of a coupling element 7, as shown in FIG. 2, for example.
- the coupling element 7 has a base body 8 with a contact surface 9, by means of which the base body 8 can be placed flat and in particular with a precise fit on the container 2, in particular the wall W of the container 2.
- the contact surface 9 is preferably designed to correspond to a surface O of the wall W of the container 2 .
- the base body 8 also has a bore 10 into which the sensor element 5 of the device 1 can be introduced, for example the measuring insert 3 with the sensor element 5 and the
- a longitudinal axis LK of the bore 10 is tangential to the contact surface 9 of the coupling element 7, i.e. in a plane parallel to a tangent T to the contact surface 9 or wall W of the container 2.
- Coupling element 2 has bores 10a and 10b, which each serve to accommodate a measuring insert 3a and 3b, as illustrated in FIG. 2b.
- the respective angles a can be the same in each case, as in the case of FIG. 2b, or at least partially different.
- the base body 8 is designed in the form of a shell in order to enable a compact design.
- the base body 8 is a large-volume base body 8, the particular advantages in terms of thermal
- the base body 8 which is designed similarly to the case in FIG. 2e, also includes a shank 8a for receiving the measuring insert 3.
- the shank 8a has various functions, in particular it serves to improve heat conduction from the wall W of the container 2 to the measuring insert 3 and to an enlargement of an area with a homogeneous temperature distribution around the measuring insert 3.
- the shank 8a can serve to improve the thermal insulation and/or the mechanical stability of the device 1 or of the measuring insert 3 in the bore 10 of the base body 8 .
- FIG. 3 Various possible configurations for multi-part coupling elements 7 and for possible fastening means 13 are shown in FIG. 3 .
- the base body 8 is in two parts and is designed with a shaft 8a and has two coupling components in the form of half-shells 11a and 11b, which can be arranged around the pipeline 2.
- the bore 10 runs in the area of both half-shells 11a and 11b and is closed in an end area 12 .
- the base body 8 can also have more than two coupling components in other configurations, and that even in the case of two coupling components, these do not necessarily have to be designed in the form of half shells 11a and 11b. Rather, numerous different variants are conceivable, all of which fall under the present invention.
- the coupling element 7 includes fastening means 13 for producing a screw connection using two screws, which is used to fasten the two half-shells 11 a and 11 b to one another and to the pipeline 2 .
- fastening means 13 are provided, which comprise a hinge and a screw.
- Other configurations may include other fasteners 13, such as those with fasteners, clamps, tensioners, straps, or springs.
- the fastening means 13 can be used both for fastening several components of the base body 8 to one another and for fastening the coupling element 7 to the pipeline 2 . However, separate fastening means 13 can also be used for these two purposes. In the case of a one-piece coupling element 7, only attachment to the container 2 is required.
- 4 shows a coupling element 7 with a unit 14 comprising a material with anisotropic thermal conductivity and thermal insulation 15 .
- the unit 14 is arranged in an area of the base body 8 facing the container 2
- the thermal insulation 15 is arranged in an area of the base body facing away from the container 2 and serves to insulate the coupling element or the device 1 from the environment.
- FIG. 1 A first possible configuration for a coupling element 7 produced in one piece is illustrated in FIG.
- the coupling element 7 has a base body 8 with an (optional) shaft 8a and a bore 10 for receiving a measuring insert 3 with a sensor element 5.
- the contact surface 9 lies flat against the wall W of the container 2.
- the surface of the contact surface 9 is as large as possible, in particular a maximum, while an expansion of the base body 8 perpendicular to the contact surface 9 is particularly small, in particular a minimum.
- such a configuration also ensures reduced, in particular minimized, heat loss to the environment.
- the base body 8 can be designed in such a way that increased heat conduction from the contact surface 9 to the bore 10 or to the Shaft 8a takes place.
- the base body 8 shown in FIG. 5b is a hollow body.
- a base body 8 in the form of a hollow body offers the additional advantage that the measuring insert 3 is in direct contact with the wall W of the container 2 comes. This reduces the distance between the sensor element 5, which is arranged in the measuring insert 3, and the wall W of the container 2, to which the measuring insert 3 is arranged tangentially, which in turn results in a further improvement in the heat conduction from the medium M to the sensor element 5.
- FIG. 6 shows a shaft-like configuration of the base body 8 of the coupling element 7 .
- This embodiment represents a particularly compact and simple design. It is also conceivable for this embodiment to use a solid (FIG. 6a) base body 8 and a base body in the form of a hollow body (FIG. 6b).
- FIGS. 5 and 6 numerous other possible configurations for a base body 8 of a coupling element 7 according to the invention are conceivable, which also fall under the present invention.
- the configurations shown in FIGS. 5 and 6 can also be combined with one another as desired.
- a standard measuring insert 3 for example a thermometer 1
- the coupling element 7 has a bore 10 for receiving the measuring insert 3 .
- An adaptation to the geometry of the container 2 takes place by means of the contact surface 9 of the coupling element 7.
- a longitudinal axis L of the measuring insert 3 runs tangentially to the wall of the container W, as a result of which improved heat conduction is achieved can.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/554,832 US20240201020A1 (en) | 2021-04-14 | 2022-03-21 | Coupling element for a device for determining and/or monitoring a process variable |
CN202280024850.8A CN117083509A (zh) | 2021-04-14 | 2022-03-21 | 针对用于确定和/或监测过程变量的设备的联接元件 |
EP22717115.4A EP4323736A1 (de) | 2021-04-14 | 2022-03-21 | Koppelelement für eine vorrichtung zur bestimmung und/oder überwachung einer prozessgrösse |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021109410.0 | 2021-04-14 | ||
DE102021109410.0A DE102021109410A1 (de) | 2021-04-14 | 2021-04-14 | Nicht invasives Thermometer |
Publications (1)
Publication Number | Publication Date |
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WO2022218649A1 true WO2022218649A1 (de) | 2022-10-20 |
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ID=81325372
Family Applications (1)
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PCT/EP2022/057322 WO2022218649A1 (de) | 2021-04-14 | 2022-03-21 | Koppelelement für eine vorrichtung zur bestimmung und/oder überwachung einer prozessgrösse |
Country Status (5)
Country | Link |
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US (1) | US20240201020A1 (de) |
EP (1) | EP4323736A1 (de) |
CN (1) | CN117083509A (de) |
DE (1) | DE102021109410A1 (de) |
WO (1) | WO2022218649A1 (de) |
Citations (14)
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EP2612122B1 (de) | 2010-08-31 | 2016-10-19 | Endress+Hauser Wetzer GmbH+CO. KG | Verfahren und vorrichtung zur in situ kalibrierung eines thermometers |
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EP3795971A1 (de) * | 2019-09-17 | 2021-03-24 | TE Connectivity India Private Limited | Fluid leak detector und fluid leak detection methode auf der grundlage von wärmeübertragungsmessungen |
-
2021
- 2021-04-14 DE DE102021109410.0A patent/DE102021109410A1/de active Pending
-
2022
- 2022-03-21 EP EP22717115.4A patent/EP4323736A1/de active Pending
- 2022-03-21 CN CN202280024850.8A patent/CN117083509A/zh active Pending
- 2022-03-21 US US18/554,832 patent/US20240201020A1/en active Pending
- 2022-03-21 WO PCT/EP2022/057322 patent/WO2022218649A1/de active Application Filing
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US5382093A (en) | 1993-02-22 | 1995-01-17 | Gay Engineering & Sales Co., Inc. | Removable temperature measuring device |
DE4427181A1 (de) * | 1994-08-01 | 1996-02-08 | Siemens Ag | Vorrichtung zur Halterung der Meßspitze eines Thermoelements an einem Bauteil |
DE29621433U1 (de) * | 1996-12-10 | 1998-04-16 | Landis & Gyr Tech Innovat | Temperaturfühler |
DE102005040699B3 (de) | 2005-08-25 | 2007-01-11 | Labom Meß- und Regeltechnik GmbH | Temperaturmessvorrichtung |
EP2038625B1 (de) | 2006-07-06 | 2011-08-10 | Epcos Ag | Temperaturmessvorrichtung |
EP2612122B1 (de) | 2010-08-31 | 2016-10-19 | Endress+Hauser Wetzer GmbH+CO. KG | Verfahren und vorrichtung zur in situ kalibrierung eines thermometers |
EP2748571A1 (de) * | 2011-09-15 | 2014-07-02 | Daily Instruments d/b/a Daily Thermetrics Corp. | Temperaturfühlende anordnung zur messung der temperatur einer oberfläche einer struktur |
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Also Published As
Publication number | Publication date |
---|---|
CN117083509A (zh) | 2023-11-17 |
US20240201020A1 (en) | 2024-06-20 |
EP4323736A1 (de) | 2024-02-21 |
DE102021109410A1 (de) | 2022-10-20 |
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