阅读说明：本技术 科里奥利测量换能器和科里奥利测量设备 (Coriolis measuring transducer and coriolis measuring device ) 是由 泽韦林·拉姆塞耶 本杰明·施文特 于 2019-01-23 设计创作，主要内容包括：本发明涉及科里奥利测量设备(1)的科里奥利测量传感器(10)以及用于检测流过该科里奥利测量设备的至少一个测量管的介质的质量流量或密度的科里奥利测量设备,包括：至少一个测量管(11),该至少一个测量管包括入口(11.1)和出口(11.2)并且被设计成在入口和出口之间输送介质；至少一个激励器(12),该至少一个激励器被设计成导致至少一个测量管振荡；至少一个传感器(13),该至少一个传感器被设计成检测至少一个测量管的振荡的偏转；其中,至少一个激励器以及至少一个传感器分别具有线圈装置(14)并且分别具有磁体装置(15),该线圈装置(14)具有至少一个线圈(14.1),并且磁体装置和线圈装置可相对于彼此移动,本发明的特征在于：至少一个激励器或至少一个传感器具有被设计成使得激励器或传感器的温度可测量的集成的温度测量设备(14.3)。(The invention relates to a Coriolis measuring sensor (10) of a Coriolis measuring device (1) and a Coriolis measuring device for detecting a mass flow or a density of a medium flowing through at least one measuring tube of the Coriolis measuring device, comprising: at least one measuring tube (11) which comprises an inlet (11.1) and an outlet (11.2) and is designed to convey a medium between the inlet and the outlet; at least one exciter (12) which is designed to cause at least one measuring tube to oscillate; at least one sensor (13) designed to detect an oscillating deflection of the at least one measuring tube; wherein the at least one actuator and the at least one sensor each have a coil arrangement (14) and each have a magnet arrangement (15), wherein the coil arrangement (14) has at least one coil (14.1), and wherein the magnet arrangement and the coil arrangement are movable relative to one another, characterized in that: at least one actuator or at least one sensor has an integrated temperature measuring device (14.3) which is designed such that the temperature of the actuator or sensor is measurable.)

1. A coriolis measurement transducer (10) for a coriolis measurement device (1) for recording a mass flow or a density of a medium flowing through at least one measurement tube of the coriolis measurement device, comprising:

the at least one measuring tube (11) having an inlet (11.1) and an outlet (11.2) and being adapted to convey the medium between the inlet and the outlet;

at least one exciter (12) adapted to excite the at least one measurement tube to perform oscillations;

at least one sensor (13) adapted to register the oscillating deflection of the at least one measurement tube;

wherein at least one exciter and at least one sensor have in each case a coil arrangement (14) and in each case a magnet arrangement (14.2), which has in each case at least one coil (14.1), wherein the magnet arrangement and the coil arrangement are movable relative to one another,

the method is characterized in that: at least one actuator or at least one sensor has an integrated temperature measuring device (14.3) for optionally measuring the temperature of the actuator or the sensor.

2. The Coriolis measurement transducer of claim 1,

wherein the coil arrangement comprises a printed circuit board (14.4) having at least one printed circuit board layer (14.41), wherein the coil is applied on at least a first face (14.411) of the printed circuit board layer, and

wherein the temperature measurement device has a resistance measurement portion (14.31) of electrically conductive material applied on at least a first face (14.411) of the printed circuit board layer and/or at least a second face (14.412) other than the first face.

3. The Coriolis measurement transducer of claim 2,

wherein the printed circuit board is a multilayer printed circuit board and comprises a plurality of printed circuit board layers (14.41) which are stacked and connected via their faces with adjacent printed circuit board layers,

wherein the coil has a plurality of sub-coils (14.11) arranged on different first faces and two coil contacts (14.12), wherein the coil contacts (14.12) are arranged at the ends of the coil, and wherein the printed circuit board has a first through hole (14.5) adapted to electrically connect adjoining sub-coils to each other,

wherein the resistance measuring portion has two measuring portion contacts (14.311).

4. The Coriolis measurement transducer of claim 2 or 3,

wherein the resistance measurement portion (14.31) has an inductance which is at least 10 times smaller than the inductance of the coil, and in particular at least 50 times smaller, and preferably at least 200 times smaller.

5. The Coriolis measurement transducer of claim 4,

wherein a first part of the resistance measuring section (14.312) is arranged on the first or second side, wherein at least the first part is embodied meander-shaped at least in some regions.

6. Coriolis measurement transducer according to one of the preceding claims,

wherein the magnet arrangement (14.2) comprises at least one permanent magnet (14.21) having at least one region which is offset with respect to the coil in the direction of the coil axis.

7. The Coriolis measurement transducer of one of claims 2 to 6,

wherein the coil and/or the resistance measuring section are produced on the respective side, in particular by means of etching or printing or screen printing or photochemically.

8. The Coriolis measurement transducer of one of claims 2 to 7,

wherein the conductive tracks defining the coil and the resistance measuring portion have a width of less than 200 microns, and in particular less than 100 microns, and preferably less than 70 microns.

9. Coriolis measurement transducer according to one of the preceding claims,

wherein at least one exciter and at least one sensor or at least two exciters or at least two sensors of the measuring tube have an integrated temperature measuring device,

wherein the spatial temperature distribution of the measuring tubes is determinable, so that the oscillation behavior of the respective measuring tube is determinable.

10. Coriolis measurement transducer according to one of the preceding claims,

wherein the measurement transducer comprises a support tube (16) with a support lumen (16.1) at least partially adapted to accommodate the at least one measurement tube.

11. Coriolis measurement transducer according to one of the preceding claims,

wherein the coil of the actuator is adapted to exert a force on the associated magnet arrangement, and wherein the magnet arrangement of the sensor is adapted to induce a voltage in the coil of the associated coil arrangement.

12. Coriolis measurement transducer according to one of the preceding claims,

wherein the measuring transducer comprises two manifolds (17), wherein a first manifold (17.1) on the upstream end of the measuring transducer is adapted to receive medium flowing from a pipe into the measuring transducer and to convey the medium to the inlet of the at least one measuring pipe,

wherein the second manifold (17.2) is adapted to receive the medium flowing out of the outlet of the at least one measuring tube and to convey the medium back to the pipe.

13. Coriolis measurement transducer according to one of the preceding claims,

wherein the measuring transducer comprises two process connections (18), in particular flanges (18.1), which are adapted to connect the measuring transducer into a pipe.

14. Coriolis measurement transducer according to one of the preceding claims,

wherein the magnet arrangement is mechanically connected with the associated measurement tube, and wherein the coil arrangement is translationally and rotationally fixed with respect to the inlet and the outlet.

15. A coriolis measuring device (1) comprising:

the coriolis measurement transducer (10) of one of the preceding claims;

an electronic measuring/operating circuit (77), wherein the electronic measuring/operating circuit is adapted to supply power to the coil and, in given cases, to an associated temperature measuring device, wherein the power supply to the coil and to the temperature measuring device is done by means of a separate electrical connection (19) or by means of multiplexing,

wherein at least one electrical connection (19) of the sensor or the actuator extends to the electronic measuring/operating circuit by means of a cable path (20),

wherein the electronic measurement/operation circuit is further adapted to determine a flow measurement and/or a density measurement, an

Wherein the measuring device has in particular an electronic housing (80) for accommodating the electronic measuring/operating circuit.

Technical Field

The invention relates to a coriolis measuring transducer and a coriolis measuring device having a temperature measuring device integrated in a sensor or an exciter.

Background

The coriolis measurement device utilizes the fact that: the oscillations imposed on the oscillation tube are modified in a characteristic manner as a function of the flow rate of the medium through the oscillation tube, compared to oscillations without flow rate.

The application and recording of these oscillations is done by means of an actuator and a sensor, respectively. Since the oscillation behavior of the oscillation tube is also influenced by its temperature and temperature distribution, an additional temperature sensor is used which registers the temperature or the temperature distribution; see, for example, DE102015120087a 1.

The placement of the additional temperature sensors increases the complexity of manufacture and the susceptibility to failure of the coriolis measurement device.

Disclosure of Invention

It is therefore an object of the present invention to provide a coriolis measurement transducer and a coriolis flow measuring device in which case the temperature sensor is integrated in a robust manner.

This object is achieved by a coriolis measurement transducer as defined in independent claim 1 and a coriolis measurement device as defined in independent claim 15.

The invention relates to a coriolis measuring transducer for a coriolis measuring device for recording a mass flow or a density of a medium flowing through at least one measuring tube of the coriolis measuring device, comprising:

at least one measurement tube having an inlet and an outlet and adapted to convey a medium between the inlet and the outlet;

at least one exciter adapted to excite at least one measuring tube to perform oscillations;

at least one sensor adapted to register the oscillatory deflection of the at least one measurement tube;

wherein the at least one exciter and the at least one sensor have in each case a coil arrangement and in each case a magnet arrangement, which has in each case at least one coil, wherein the magnet arrangement and the coil arrangement are movable relative to one another,

wherein at least one actuator or at least one sensor has an integrated temperature measuring device which is adapted such that the temperature of the actuator or sensor is measurable.

Due to the integrated temperature measuring device, the electrical connection of the temperature measuring device to the electronic measuring/operating circuit can be arranged in a connecting cable, in which the electrical connection of the exciter or the sensor is also arranged. In this way, cables in the measuring transducer can be saved and the temperature or the temperature distribution of the oscillating tube can be recorded by means of at least one exciter or sensor.

In one embodiment, the coil arrangement comprises a printed circuit board having at least one printed circuit board layer, wherein the coil is applied on at least a first side of the printed circuit board layer, and wherein the temperature measuring device has a resistance measuring section of an electrically conductive material, which is applied on at least the first side and/or at least a second side of the printed circuit board layer other than the first side.

For example, a printed circuit board or a magnet arrangement can be fixed to the measuring tube, wherein the magnet arrangement or the printed circuit board is fixed translationally and rotationally, or mounted on a second measuring tube or the anti-oscillation arrangement. In the former case, the printed circuit board directly records the temperature of the measuring tube, while in the second case the printed circuit board at least partially indirectly records the temperature of the measuring tube via heat radiation from the magnet arrangement. In the case of a magnet arrangement or printed circuit board which is fixed in terms of translation and rotation, the magnet arrangement or printed circuit board can be fixed, for example, via a support tube of the coriolis measuring device, wherein the eigenfrequency of the support tube differs from the eigenfrequency of the measuring tube and therefore no oscillatory coupling occurs.

In one embodiment, the printed circuit board is a multilayer printed circuit board and includes a plurality of printed circuit board layers stacked and connected via their faces to adjacent printed circuit board layers,

wherein the coil has a plurality of sub-coils arranged on different first faces and two coil contacts, wherein the coil contacts are arranged at the ends of the coil, and wherein the printed circuit board has a first through hole adapted to electrically connect adjoining sub-coils to each other,

wherein the resistance measuring section has at least two measuring section contacts.

Due to the use of a multilayer printed circuit board, the coil can have a larger inductance than a printed circuit board consisting of one printed circuit board layer, a feature which significantly increases the power of the actuator or sensor.

In an embodiment, the resistance measuring part has an inductance which is at least 10 times smaller than the inductance of the coil, and in particular at least 50 times smaller, and preferably at least 200 times smaller. In this way, the interaction of the coil and the resistance measuring section can be minimized, which means that the power of the actuator or sensor is increased accordingly.

In one embodiment, a first part of the resistance measuring section is arranged on the first or second side, wherein the first part is embodied meandering at least in some regions. In this way, it is possible to reduce the inductance of the resistance measurement portion and optimize the resistance of the resistance measurement portion so as to improve the measurement accuracy.

In one embodiment, the magnet arrangement comprises at least one permanent magnet having at least one region which is offset with respect to the coil in the direction of the coil axis. In this way, the permanent magnet can be moved perpendicular or parallel to the coil axis in order to induce a voltage in the coil or to exert a force by means of a magnetic field generated via the coil.

In one embodiment, the coils and/or the resistance measuring sections are produced on the respective side by means of etching.

In one embodiment, the conductive traces and resistance measuring portion defining the coil have a width of less than 200 microns, and in particular less than 100 microns, and preferably less than 70 microns. Reducing the width of the conductive traces enables the length of the coil and resistance measurement portion to be increased. In this way, there is greater flexibility to optimize the inductance of the coil and the resistance of the resistance measurement portion.

In one embodiment, at least one exciter and at least one sensor or at least two exciters or at least two sensors of the measuring tube have an integrated temperature measuring device,

the spatial temperature distribution of the measuring tube is thus determinable, so that the oscillation behavior of the respective measuring tube is determinable.

Knowledge of the temperature makes it possible to correct the flow or density determination of the medium flowing through the measuring tube.

In one embodiment, a flow measurement device includes a support tube having a support lumen at least partially adapted to receive at least one measurement tube.

In an embodiment, the coil of the actuator is adapted to exert a force on the associated magnet arrangement, and wherein the magnet arrangement of the sensor is adapted to induce a voltage in the coil of the associated coil arrangement.

In one embodiment, each of the measurement tubes is at least partially curved, and wherein the curvature of each measurement tube defines a plane in a rest state of the measurement tube.

Wherein the at least one exciter is adapted to excite the measurement tube to perform oscillations by means of deflections which cause bending of the measurement tube perpendicular to the plane.

In one embodiment, the measuring transducer comprises two manifolds, wherein a first manifold on the upstream end of the measuring transducer is adapted to receive medium flowing from the pipe into the measuring transducer and to convey the medium to the inlet of the at least one measuring pipe,

wherein the second manifold is adapted to receive the medium discharged from the outlet of the at least one measuring tube and to convey the medium back into the pipe.

In one embodiment, the measurement transducer comprises two process connections, in particular flanges, which are adapted to connect the measurement transducer into the pipe.

In one embodiment, the magnet arrangement is mechanically connected with the associated measuring tube, and wherein the coil is translationally and rotationally fixed with respect to the inlet and outlet.

The Coriolis measuring device of the present invention comprises:

the coriolis measurement transducer defined in one of the above variants;

an electronic measuring/operating circuit, wherein the electronic measuring/operating circuit is adapted to supply power to the coil and, in given cases, also to the associated temperature measuring device, wherein the power supply to the coil and to the temperature measuring device is done by means of separate electrical connections or by means of multiplexing,

wherein at least one electrical connection of the sensor or the actuator extends by means of a cable path to an electronic measuring/operating circuit,

wherein the electronic measurement/operation circuitry is further adapted to determine and provide a flow measurement and/or a density measurement.

Drawings

The invention will now be described on the basis of examples of embodiments presented in the accompanying drawings, in which:

fig. 1 schematically shows an exemplary coriolis measurement device having a coriolis measurement transducer comprising an inventive exciter and a sensor;

FIG. 2 is a schematic plan view of an exemplary printed circuit board for an actuator or sensor of the present invention, an

Fig. 3a) to 3c) are schematic views of examples of embodiments of actuators or sensors of the invention.

Detailed Description

Fig. 1 shows a coriolis measuring device 1 for measuring a flow rate or density of a medium flowing through a measuring tube 11 of the measuring device, which coriolis measuring device 1 comprises a measuring transducer 10 and an electronics housing 80 connected thereto, in which electronics measuring/operating circuitry 77 is arranged for operating the exciter 12 and the sensor 13 and for providing a flow rate and/or density measurement value of the medium. The measuring transducer 10 comprises a support tube 15 with a support lumen 15.1 in which two measuring tubes 11 are arranged. The support tube comprises at its end a process connection 17, in particular in the form of a flange 17.1, by means of which process connection 17 the coriolis measuring device can be integrated into a pipeline (not shown). In the region of the process connections, the measuring transducers 10 each comprise a manifold 16, here a Y-piece, wherein the manifold 16 pointing upstream is adapted to receive the medium entering the measuring transducer from the pipe and distribute it evenly to the inlets 11.1 of the two measuring pipes. The second manifold 16.2 directed downstream is adapted to receiving the medium flowing out of the outlet 11.2 of the measuring tube and returning it into the pipe. At least one exciter 12 and at least one sensor 13 are provided to excite the measuring tube 11 to perform oscillations and to record oscillations, respectively. As an alternative to the exemplary embodiments of the coriolis measuring device shown here, the measuring device may also have only one measuring tube or even four measuring tubes, wherein, for example, it is also possible to accommodate only a portion of the support tube cavity 15.1 with the measuring tubes. The embodiment with a curved measuring tube as shown here provides one option, while the embodiment with a straight measuring tube is another option. At least one actuator and at least one sensor have in each case a coil arrangement 14 (see fig. 2) and in each case a magnet arrangement 14.2 (see fig. 3a) to 3c)), which coil arrangement 14 has in each case at least one coil 14.1, wherein the magnet arrangement and the coil arrangement are movable relative to one another. Then, in this case, the coil arrangement and the magnet arrangement of the sensor are arranged in the measuring transducer such that an oscillation of the at least one measuring tube causes a relative movement between the coil arrangement and the magnet arrangement. The induced voltage thus induced can be recorded as a measurement signal and evaluated by the electronic measurement/operation circuit 77. In contrast, in the case of an exciter, the application of a voltage to the coil generates a force between the coil arrangement and the magnet arrangement, which force serves to excite the measuring tube into oscillation. By providing at least one sensor 12 or exciter 13 (see fig. 2 and 3a) to 3c)) of the invention, the temperature of at least one measuring tube can be determined by means of the sensor or exciter in order to determine the oscillation characteristics of the measuring tube in this way, wherein fewer cables are required to produce the electrical connection between the electronic measuring/operating circuit 77 and the sensor or exciter. By providing a plurality of elements of the invention, wherein the elements are sensors or actuators, it is possible to record the spatial temperature distribution of at least one measuring tube and thus to record more details of the vibrational behavior of the measuring tube.

Fig. 2 shows a schematic plan view a and a schematic side view S of a coil arrangement 14 according to the invention with a printed circuit board 14.4 with a coil 14.1 on a reduced scale. In this case, the printed circuit board includes a plurality of printed circuit board layers 14.41, the plurality of printed circuit board layers 14.41 having first and second faces 14.411 and 14.412, respectively. The coil comprises a plurality of sub-coils 14.11, which sub-coils 14.11 are arranged on different faces and are electrically connected by means of vias 14.5. The coils each comprise coil contacts 14.12 at their ends, by means of which the coils can be brought into contact with an electronic measuring/operating circuit via an electrical connection 19. As shown here, the coil contacts can be connected to the through-holes 14.5 in order to produce an electrical contact at the ends of the partial coils. In addition to the coil 14.1, the printed circuit board 14.4 of the invention also comprises an integrated temperature measuring device 14.3, which integrated temperature measuring device 14.3 may be a resistance measuring part 14.31 with a measuring part contact 14.311, as shown here. Equivalent to the coil contacts, the measuring part contacts are adapted to connect the electronic measuring/operating circuit with the resistance measuring part via an electrical connection 19. The resistance measuring portion may be arranged on only one face as shown here, or extend over a plurality of faces like the coil. In this case, the resistance measuring section is advantageously meandering in order to reduce the inductance of the resistance measuring section and thus the influence of the coil. As an alternative to the exemplary embodiment shown here, the printed circuit board may also have only one layer and/or the coils may be arranged on only one side. In this case, the electrical connections 19 are advantageously combined in one cable path 20.

Fig. 3a) to 3c) schematically show by way of example the movement of the coil arrangement 14 and the magnet arrangement 15 relative to each other. For example, the magnet arrangement 15 can be moved parallel to a plane E parallel to the face of the printed circuit board, such as shown in the examples of embodiments shown in a) and b). In this case, the magnet arrangement may partially abut the top and bottom surfaces of the printed circuit board, as shown in b). The magnet arrangement can also be moved perpendicular to the plane E, see c).

List of reference characters

1 coriolis measuring device

10 coriolis measuring transducer

11 measuring tube

11.1 entrance

11.2 outlet

11.3 bending

12 exciter

13 sensor

14 coil device

14.1 coil

14.11 sub-coils

14.12 coil contact

14.3 Integrated temperature measurement device

14.31 resistance measuring part

14.311 measuring part of contact

14.312 first part of resistance measuring part

14.4 printed Circuit Board

14.41 printed circuit board layer

14.411 first side

14.412 second side

14.5 through hole

15 magnet device

15.1 permanent magnet

16 support tube

16.1 support lumen

17 manifold

17.1 first manifold

17.2 second manifold

18 process connection

18.1 Flange

19 electrical connection

20 cable path

77 electronic measuring/operating circuit

80 electronic casing

Plan view A

S side view