CN115493739A - Pressure measuring device and pressure measuring system - Google Patents
Pressure measuring device and pressure measuring system Download PDFInfo
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- CN115493739A CN115493739A CN202110674130.3A CN202110674130A CN115493739A CN 115493739 A CN115493739 A CN 115493739A CN 202110674130 A CN202110674130 A CN 202110674130A CN 115493739 A CN115493739 A CN 115493739A
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- pressure
- pressure measuring
- measuring device
- displacement sensor
- bearing element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/026—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges with optical transmitting or indicating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/04—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
- G01L9/0004—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using variations in inductance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
- G01L9/0005—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using variations in capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
- G01L9/0007—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using photoelectric means
Abstract
The present application relates to a pressure measurement device and a pressure measurement system. The pressure measuring device includes: a pressure receiving portion (1) including a pressure receiving member (1A) that contacts a fluid medium to be measured; the pressure measuring part (2) comprises a signal acquisition element which is arranged separately from the pressure bearing element and is isolated from the fluid medium to be measured; the signal acquisition element comprises a displacement sensor (3) which senses a deformation signal generated by the pressure bearing element based on the pressure of the fluid medium; the bearing element is adapted to be mounted at the measurement interface by means of a detachable connection mechanism (1B). The pressure measuring device and the pressure measuring system can be suitable for different application occasions, and ensure the accuracy, stability and precision of the measuring result.
Description
Technical Field
The invention relates to the field of pressure measurement, in particular to a pressure measurement device and a pressure measurement system.
Background
Pipeline fluid conveying systems are commonly used in industrial production, scientific research and daily life, and are widely applied to various industries such as thermal engineering, electric power, construction, water supply and drainage, heating and ventilation, automatic control and the like, wherein pipeline or fluid pressure measurement is not only a means for implementing fluid medium (such as oil, water and gas) metering, but also a necessary measure for ensuring normal production and safe operation of equipment by detecting and controlling pressure.
At present, in the field of pipeline pressure measurement, a contact pressure-sensitive element is generally adopted as a core device for pressure measurement. However, since the media to which such sensing devices are adapted to contact are generally limited to a few specific materials, their media compatibility is very limited, and in many applications corrosive damage is easily caused, especially under certain complex corrosive conditions, the lifetime of the pressure sensitive element may even be less than half a year, resulting in high use and maintenance costs.
Meanwhile, because the contact type sensing device needs to be in direct contact with a medium to be measured, temperature reduction measurement must be carried out under the condition that the temperature of the medium to be measured is too high, filling liquid is mostly adopted for pressure transmission, and the method is still inevitably limited by the temperature resistance limit of the filling liquid medium. In the pipeline pressure measuring system, an ideal solution is not available according to the prior art how to effectively improve the capacity of the pipeline pressure measuring system for measuring high-temperature media.
Furthermore, it is necessary for the pressure-sensitive element, which is susceptible to damage due to overload, to ensure an effective signal output in the elastic range.
With the development of pressure measuring technology, non-contact pressure measuring equipment gradually appears in the market at present, but the existing non-contact pressure measuring equipment generally needs to be installed, debugged and calibrated on site when in use, so that the cost of manpower and material resources is increased. In addition, the existing non-contact pressure measuring equipment, such as a non-intrusive ultrasonic pipeline pressure measuring system, has the following disadvantages: the adaptability is poor for measuring the pressure of pipelines with different pipe diameters; the low-voltage measurement error is large; the temperature and flow rate fluctuation has great influence on the measurement accuracy.
Disclosure of Invention
Therefore, an object of the present invention is to provide an improved pressure measurement device and pressure measurement system, which can be adapted to different applications and ensure the accuracy, stability and precision of the measurement result.
Specifically, the present application proposes a pressure measurement device comprising: the pressure-bearing part comprises a pressure-bearing element contacted with a fluid medium to be measured; and the pressure measuring part comprises a signal acquisition element which is arranged separately from the pressure bearing element and is isolated from the fluid medium to be measured. The signal acquisition element comprises a displacement sensor which senses a deformation signal generated by the pressure bearing element based on the pressure of the fluid medium; the bearing element is adapted to be mounted at the measurement interface by means of a detachable connection mechanism.
In the present invention, the term "separately disposed" is to be understood as: the pressure-bearing element and the signal detection element do not form an integral component or structural unit, which can be manufactured and assembled separately, but does not necessarily mean that in the pressure measurement device the pressure-bearing element and the signal detection element are arranged at a spatial distance from one another; importantly, the pressure bearing element is in contact with the fluid medium to be measured, and the signal acquisition element (such as a displacement sensor) is isolated from the fluid medium to be measured, namely is not in contact with the fluid medium to be measured.
According to the invention, a contact pressure-sensitive element used in the prior art is eliminated, an independent pressure-bearing element is arranged, and a displacement sensor is used for sensing a deformation signal of the pressure-bearing element to form a special non-contact pressure measuring device. On the one hand, the sensitive sensor device is thus not in contact with the medium to be measured and is thus protected from chemical effects such as pressure and/or temperature loading of the medium and corrosion; on the other hand, an independent pressure-bearing element (which is in contact with the medium to be measured) is introduced, the pressure-bearing element is separately arranged relative to the sensing device and can be detachably mounted at the measurement interface, that is, the pressure-bearing element does not belong to a fixed part of the transmission pipeline, so that the adaptive design is allowed for the fluid medium to be measured with different material characteristics, different working temperatures and different pressure levels, the adaptive capacity which cannot be achieved by known contact and non-contact pressure measurement equipment is achieved, and the accuracy, stability and precision of the measurement result are ensured.
Advantageously, the pressure bearing element is a purely mechanical member and the releasable connection comprises a flange part. The pressure-bearing element can thus be produced easily by machining and can be simply assembled mechanically at the measuring site by means of the flange part without complicated site assembly, adjustment and calibration by a specialist. It is particularly preferred that the flange part is designed as a standard flange, such as a standard pipe flange, so that standardized production and standardized adaptation of the device are facilitated. The bearing elements and the flange parts are used as members for respectively carrying out the measuring and connecting functions, and can be made of the same material or different materials, and can be of an integrated structure or a split structure due to comprehensive consideration on design, manufacturing, use cost and the like.
According to one embodiment of the invention, the pressure-bearing element is configured as a pipe section, and the displacement sensor is arranged for sensing a deformation signal generated on the basis of the fluid medium pressure inside the pipe section from the circumferential side of the pipe section.
In this connection, the detachable connection can comprise connection flanges which are arranged at both ends of the pipe section and are fixedly connected to the pipe section or are formed in one piece.
According to another embodiment of the invention, the pressure bearing element is configured as a plate, and the displacement sensor is arranged to sense a deformation signal from one side of the plate based on the pressure of the fluid medium on the other side of the plate.
In this connection, the detachable connection means suitably comprise a connecting flange formed on the peripheral side of the plate, which connecting flange is fixedly connected to the plate or is constructed in one piece.
Further, the displacement sensor is a nano-scale high-precision displacement sensor. Accordingly, the resolution precision of the displacement sensor can reach 1 nanometer, so that the deformation of the pressure-bearing element and the pressure of the pipeline or the fluid medium can be measured with high precision. For example, the displacement sensor may be an inductive displacement sensor, a capacitive displacement sensor, a photoelectric displacement sensor, an ultrasonic displacement sensor, a nano-displacement meter based on the principle of spectral confocal, or the like.
The displacement sensor may be a contact displacement sensor or a non-contact displacement sensor depending on the measurement site requirements and equipment conditions, and the present invention is not limited in this respect.
Further, the pressure measuring part comprises a signal processing unit connected with the displacement sensor, and the signal processing unit processes the deformation signal sensed by the displacement sensor and generates a readable output signal representing the pressure.
Further, the pressure measuring part further comprises a temperature sensor connected with the signal processing unit, the temperature sensor senses the temperature signal of the pressure bearing element in real time, and the signal processing unit additionally considers the temperature signal when processing the deformation signal and/or generating the readable output signal. Thereby, pressure measurement errors caused by temperature variations can be compensated.
The temperature sensor can be a contact temperature sensor or a non-contact temperature sensor. As the contact temperature sensor, for example, a thermal resistor, a thermocouple, or the like can be used. Preferably, a non-contact temperature sensor, such as an infrared temperature sensor, is used here, so that non-contact temperature signal acquisition is possible, facilitating the appropriate configuration of the pressure measuring device depending on the field conditions.
Here, the "connection" between the displacement sensor and/or the temperature sensor and the signal processing unit mainly refers to a connection for transmitting signals, and may be a wireless connection or a wired connection, and the present invention is not limited in this respect.
Suitably, the signal processing unit forms a structural assembly with the displacement sensor and/or the temperature sensor, thereby achieving integration, miniaturization, and convenient assembly and use of the device.
Advantageously, the pressure-bearing element is configured as a series of standard parts that can be determined in dependence on the material properties and/or pressure levels of the fluid medium to be measured. Therefore, the pressure measuring device is convenient to use, for example, after a device production side is calibrated for a certain pressure bearing element standard component, the pressure measuring device can be directly used for measuring the pressure of different pipelines without field adaptation or adjustment; the pressure measuring device has wide application, and a user of the device can select a certain pressure bearing element standard component suitable for different application occasions and conditions (such as high/low pressure, corrosiveness/non-corrosiveness and the like) in a matching way. Here, a standard series of pressure-bearing elements can be formed and set based on the material characteristics (e.g., elastic modulus, strength), structural dimensions, etc. of the pressure-bearing member, and the entire measuring device is calibrated by combining the components (signal processing unit, displacement sensor, temperature sensor) of the pressure-measuring part, and these operations are all suitably completed by professional technicians/professional debugging equipment in the device production side, which is beneficial to good product control at the manufacturing source, thereby providing a high-precision pressure measuring device product capable of truly realizing 'ready-to-use' for users.
In another aspect, the present application also provides a pressure measurement system for measuring a pressure of a fluid medium conveyed in a pipe, the pressure measurement system comprising: the pressure measuring device is as described above, and the measuring interface is preset on the pipeline. The pressure part of the pressure measuring device comprises a pressure bearing element which is matched and selected according to the characteristics and/or the pressure level of the fluid medium material in the pressure measuring system, and the pressure bearing element is installed at the measuring interface of the pipeline through a detachable connecting mechanism.
Advantageously, the measuring interface of the pipe is designed with a connector that is adapted to the detachable connection, by means of which a detachable assembly connection is formed between the pressure receiving part of the pressure measuring device and the pipe. Accordingly, the detachable connection on the side of the pressure measuring device preferably comprises flange parts, for example standard pipe flanges formed at both ends of the pipe section (i.e. the pressure-bearing element) or standard blind flanges formed together with the plate (i.e. the pressure-bearing element), with which standard pipe flanges are adapted to the pipe-side connection.
The features and advantages of the pressure measurement device provided according to the first aspect of the invention are equally applicable to the pressure measurement system provided by the second aspect of the invention. Particularly, the pressure measuring device (particularly the pressure-bearing element) is independently designed, independently manufactured and calibrated in manufacturers, so that an integrally matched pressure measuring device finished product can be provided for users, the pressure measuring device finished product is directly installed and used in a measuring field, the inconvenience of field adjustment and test is avoided, the uncertainty caused by difficulty in controlling the field operation quality is avoided, and the accuracy, the stability and the precision of pressure measurement are ensured under the condition of improving the adaptability of the device.
Drawings
In which exemplary embodiments of the invention are shown. The embodiments and figures disclosed herein are to be regarded as illustrative rather than restrictive. It is also noted that for purposes of clarity of illustration, certain features are not necessarily drawn to scale in the drawings.
FIG. 1 is a schematic diagram of a pressure measurement device and corresponding pressure measurement system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pressure measurement device and a corresponding pressure measurement system according to another embodiment of the present invention.
Detailed Description
The following description is provided to illustrate the technical solutions of the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention. It is further noted that the features, structures, or characteristics described in connection with one embodiment are not necessarily limited to the particular embodiment, nor are they intended to be mutually exclusive of other embodiments, as those skilled in the art will recognize that different combinations of features in different embodiments may be contemplated as within the scope of the invention.
In the present application, the terms "comprise", "include" and "have", as well as any variant thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. In the description of the present application, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and for simplifying the description, and do not mean that the corresponding device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, the above terms should not be construed as limiting the present invention. In addition, the terms "a" and "an" should be interpreted as "at least one" or "one or more," i.e., the number of an element can be one in one embodiment and the number of the element can be plural in another embodiment, i.e., the terms "a" and "an" should not be interpreted as limiting the number.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art and may be specifically interpreted according to their context in the context of the description of the relevant art.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In one aspect, the present application provides a pressure measuring apparatus, as shown in fig. 1 and fig. 2, including a pressure receiving portion 1, where the pressure receiving portion 1 includes a pressure bearing member 1A contacting a fluid medium to be measured; and the pressure measuring part 2 comprises a signal acquisition element which is arranged separately from the pressure bearing element and is isolated from the fluid medium to be measured. The signal acquisition element comprises a displacement sensor 3, and the displacement sensor senses a deformation signal generated by the pressure bearing element based on the pressure of the fluid medium; the pressure bearing member is adapted to be mounted at the measurement interface by means of a detachable connection 1B.
According to one embodiment of the invention (see fig. 1), the pressure-containing element 1A is configured as a pipe section, and the displacement sensor 3 is arranged for sensing a deformation signal generated on the basis of the fluid medium pressure inside the pipe section from the pipe section circumferential side. In this connection, the releasable connection 1B can comprise connecting flanges at both ends of the pipe section, which are fixedly connected to the pipe section or can be formed in one piece.
According to another embodiment of the invention (see fig. 2), the pressure bearing element 1A is configured as a plate, and the displacement sensor 3 is arranged to sense a deformation signal from one side of the plate, which signal is generated on the basis of the pressure of the fluid medium on the other side of the plate. In this connection, the detachable connection 1B expediently comprises a connecting flange formed on the circumferential side of the plate, which is fixedly connected to the plate or is constructed in one piece.
To achieve the required measurement accuracy, the displacement sensor 3 is preferably a nanometer-scale high-accuracy displacement sensor.
Within the framework of the invention, the displacement sensor 3 can be a contact displacement sensor or a non-contact displacement sensor.
Further, the pressure measuring part 2 comprises a signal processing unit 5 connected with the displacement sensor, and the signal processing unit processes the deformation signal sensed by the displacement sensor and generates a readable output signal representing the pressure. The pressure measuring part 2 further comprises a temperature sensor 4 connected with the signal processing unit 5, the temperature sensor senses the temperature signal of the pressure bearing element 1A in real time, and the signal processing unit 5 additionally considers the temperature signal when processing the deformation signal and/or generating the readable output signal, so that corresponding correction is performed, and the pressure measuring error caused by temperature change is compensated.
The temperature sensor 4 may be a contact temperature sensor (e.g., a thermal resistor, a thermocouple), or a non-contact temperature sensor (e.g., an infrared temperature sensor), and the invention is not limited in this respect.
It is particularly advantageous if the signal processing unit 5 forms a structural component with the displacement sensor 3 and/or the temperature sensor 4.
According to the invention, the pressure-bearing element 1A is advantageously designed as a series of standard parts that can be determined depending on the material properties and/or pressure classes of the fluid medium to be measured.
In another aspect, the present application also provides a pressure measurement system for measuring a pressure of a fluid medium conveyed in a pipe, the pressure measurement system comprising: as mentioned above, the pressure measuring device 10 has a measuring interface preset on the pipe 20. The pressure part 1 of the pressure measuring device comprises a pressure bearing element 1A which is matched and selected according to the characteristics and/or the pressure level of the fluid medium material in the pressure measuring system, and the pressure bearing element is installed at the measuring interface of the pipeline through a detachable connecting mechanism 1B.
Advantageously, the measuring interface of the pipe is designed with a connector that is adapted to the detachable connection 1B, by means of which detachable connection 1B and the connector a detachable assembly connection is formed between the pressure input 1 of the pressure measuring device and the pipe.
Of course, other suitable connection means or structures, such as a threaded engagement, a snap engagement, etc., may be used between the detachable connection means on the one hand and the fitting on the other hand on the one hand of the pressure measuring device within the scope of the invention.
The pressure measuring system according to fig. 1, which forms a high-precision contactless line pressure measuring system for measuring the pressure of a fluid medium conveyed in a line 20, is composed of a line-type measuring member, a high-precision displacement sensor, a temperature sensor, and a signal processing unit, and particularly comprises the pressure measuring device 10 according to the present invention. The pressure part 1 of the pressure measuring device comprises a pressure bearing element 1A and a detachable connecting mechanism 1B, wherein the pressure bearing element 1A is specifically constructed into a pipe section, and the detachable connecting mechanism 1B comprises connecting flanges arranged at two ends of the pipe section. The pressure measuring section 2 of the pressure measuring device includes a displacement sensor 3, a temperature sensor 4, and a signal processing unit 5. The pipe 20 may be a main fluid transmission pipe or a branch pipe, and is configured with flanges matched with connecting flanges at two ends of the pipe section to form a measuring interface capable of clamping and installing the whole pressure receiving part 1.
The pressure measuring system according to fig. 2, which likewise forms a high-precision contactless line pressure measuring system for measuring the pressure of a fluid medium conveyed in a line 20, is composed of a flange-type measuring element, a high-precision displacement sensor, a temperature sensor and a signal processing unit, and in particular comprises the pressure measuring device 10 according to the invention. The pressure part 1 of the pressure measuring device comprises a pressure bearing element 1A and a detachable connecting mechanism 1B, wherein the pressure bearing element 1A is specifically constructed into a plate, and the detachable connecting mechanism 1B and the plate are integrally constructed to form a blind flange. The pressure measuring section 2 of the pressure measuring device includes a displacement sensor 3, a temperature sensor 4, and a signal processing unit 5. The pipe 20, which is designed as a pipe end branching off from the main fluid supply line, is formed with a flange that is adapted to the blind flange and forms a measuring connection that can be used to support the entire pressure section 1.
In the two embodiments of the pressure measuring system, the independent pressure bearing element is arranged, and a special non-contact pressure measuring device is formed by adopting a mode that the displacement sensor senses a deformation signal of the pressure bearing element. In view of the fact that the deformation of the material is related to the strength, the mechanical dimension and the stress of the material, a precisely machined pipeline type measuring component (a pipe section) or a flange type measuring component (a blind flange forms a plate sheet) is adopted as a pressure-bearing element; a high-precision displacement sensor is connected to the pipeline type measuring component or the flange type measuring component in a contact or non-contact mode, for example, the measurement precision of the displacement sensor can reach 1nm for a nominal diameter of 50 mm; meanwhile, as the strength/deformation of the material is related to the current temperature of the material, a temperature sensor is connected to the pipeline type measuring component or the flange type measuring component in a contact or non-contact mode and used for transmitting a temperature signal sensed in real time to a signal processing unit so as to compensate a measuring error caused by temperature; by reading the return values of the high-precision displacement sensor and the temperature sensor, after noise signals such as temperature, vibration and the like are processed and converted by the signal processing unit, standard industrial signals such as analog output signals and various bus digital output signals are generated, namely readable output signals representing the pressure. Compared with the prior art, the pressure measurement system can be applied to more measurement occasions and has the characteristics of long service life and easiness in maintenance.
The above description is meant as an illustration of preferred embodiments of the application and of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (15)
1. A pressure measurement device, characterized in that the pressure measurement device (10) comprises:
a pressure receiving portion (1) including a pressure receiving member (1A) that contacts a fluid medium to be measured;
the pressure measuring part (2) comprises a signal acquisition element which is arranged separately from the pressure bearing element and is isolated from the fluid medium to be measured;
the signal acquisition element comprises a displacement sensor (3) which senses a deformation signal generated by the pressure bearing element based on the pressure of the fluid medium; the pressure bearing element (1A) is adapted to be mounted at the measurement interface by means of a detachable connection mechanism (1B).
2. Pressure measuring device according to claim 1, characterized in that the pressure-bearing element (1A) is a purely mechanical member and the detachable connection (1B) comprises a flange part.
3. A pressure measuring device according to claim 2, characterised in that the pressure-containing element (1A) is configured as a pipe section, and that the displacement sensor (3) is arranged for sensing a deformation signal from the pipe section circumference side, which deformation signal is generated on the basis of the fluid medium pressure inside the pipe section.
4. A pressure measuring device according to claim 3, characterized in that the detachable connection means (1B) comprise connection flanges arranged at both ends of the pipe section, which connection flanges are fixedly connected to the pipe section or are constructed in one piece.
5. A pressure measuring device according to claim 2, characterized in that the pressure-bearing element (1A) is configured as a plate, and that the displacement sensor (3) is arranged to sense a deformation signal from one side of the plate, which deformation signal is based on the pressure of the fluid medium on the other side of the plate.
6. Pressure measuring device according to claim 5, characterized in that the detachable connection means (1B) comprise a connection flange formed at the periphery of the plate, which connection flange is fixedly connected to the plate or is constructed in one piece.
7. A pressure measuring device according to any of claims 1-6, characterized in that the displacement sensor (3) is a nano-scale high precision displacement sensor.
8. A pressure measuring device according to any of claims 1-6, characterized in that the displacement sensor (3) is a contact displacement sensor or a non-contact displacement sensor.
9. A pressure measuring device according to any of claims 1-6, characterized in that the pressure measuring part (2) comprises a signal processing unit (5) connected to the displacement sensor (3), which signal processing unit processes the deformation signal sensed by the displacement sensor and generates a readable output signal representing the pressure level.
10. Pressure measuring device according to claim 9, characterized in that the pressure measuring part (2) further comprises a temperature sensor (4) connected to the signal processing unit (5), which temperature sensor senses the temperature signal of the pressure bearing element (1A) in real time, which signal processing unit additionally takes into account the temperature signal when processing the deformation signal and/or generating the readable output signal.
11. Pressure measuring device according to claim 10, characterized in that the temperature sensor (4) is a contactless temperature sensor.
12. Pressure measuring device according to claim 10, characterized in that the signal processing unit (5) forms one structural assembly with the displacement sensor (3) and/or the temperature sensor (4).
13. Pressure measuring device according to any of claims 1-6, characterized in that the pressure-bearing element (1A) is constructed as a series of standard pieces determined in dependence of the material properties and/or pressure classes of the fluid medium to be measured.
14. A pressure measurement system for measuring the pressure of a fluid medium conveyed in a pipe, characterized in that the pressure measurement system comprises:
the pressure measuring device (10) of any one of claims 1-13, and
a measuring interface preset on the pipeline (20),
the pressure receiving part (1) of the pressure measuring device comprises a pressure-bearing element (1A) which is matched and selected according to the characteristics and/or the pressure level of the fluid medium material in the pressure measuring system, and the pressure-bearing element is installed at the measuring interface of the pipeline (20) through a detachable connecting mechanism (1B).
15. Pressure measuring system according to claim 14, characterized in that the measuring interface of the conduit (20) is configured with a fitting that mates with the detachable connection (1B), by means of which a detachable fitting connection is formed between the pressure part (1) of the pressure measuring device and the conduit (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110674130.3A CN115493739A (en) | 2021-06-17 | 2021-06-17 | Pressure measuring device and pressure measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110674130.3A CN115493739A (en) | 2021-06-17 | 2021-06-17 | Pressure measuring device and pressure measuring system |
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| Publication Number | Publication Date |
|---|---|
| CN115493739A true CN115493739A (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110674130.3A Pending CN115493739A (en) | 2021-06-17 | 2021-06-17 | Pressure measuring device and pressure measuring system |
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| CN (1) | CN115493739A (en) |
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2021
- 2021-06-17 CN CN202110674130.3A patent/CN115493739A/en active Pending
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