CN213336374U - High-sensitivity explosion-proof induction detection sensor measuring device - Google Patents
High-sensitivity explosion-proof induction detection sensor measuring device Download PDFInfo
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- CN213336374U CN213336374U CN202022329262.6U CN202022329262U CN213336374U CN 213336374 U CN213336374 U CN 213336374U CN 202022329262 U CN202022329262 U CN 202022329262U CN 213336374 U CN213336374 U CN 213336374U
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Abstract
The utility model belongs to the technical field of the detection sensor measuring device technique and specifically relates to an explosion-proof response of high sensitivity detects sensor measuring device. The measuring device of the high-sensitivity explosion-proof induction detection sensor comprises a measuring cavity, wherein a vibration sensing piece is arranged at the lower end part of the measuring cavity, a cylinder is arranged at the lower end of the vibration sensing piece, a damping signal vibration mechanism is arranged at the lower end of the cylinder, and a detection sensor is arranged in the measuring cavity; the vibration sensing piece is an annular groove sheet, the annular groove sheet is a circular sheet with an annular groove formed in the upper end face or/and the lower end face, and the detection sensor is arranged on the upper end face of the annular groove sheet. The high-sensitivity explosion-proof induction detection sensor measuring device has reasonable structural design, and the design of the vibration sensing piece not only meets the requirement of sensitivity but also meets the requirement of pressure resistance; when the annular groove is formed in the upper end face of the vibration sensing piece, a small platform is formed inside the annular groove, so that the contact area between the detection sensor and the vibration sensing piece is reduced, and vibration interference or signal noise is reduced.
Description
Technical Field
The utility model belongs to the technical field of the detection sensor measuring device technique and specifically relates to an explosion-proof response of high sensitivity detects sensor measuring device.
Background
The first vortex street flowmeter in the last 70 th century was the birth of the first vortex street flowmeter, which moved the world flow industry, and the experts in the united states predicted that a throttling device which had been applied for hundreds of years will be replaced in the near future. For decades, scientists of various countries, science and technology personnel of the flow industry and vast users experience continuous efforts in scientific research, production and application, and principles and devices such as thermistors, piezoelectric crystals, differential capacitors, ultrasonic waves and the like are presented in succession to manufacture the vortex shedding flowmeter. However, most of the above-mentioned flowmeters cannot realize online non-stop flow replacement and maintenance of the sensor. The flow stopping maintenance means that the production line needs to be stopped, the production stopping is a great contraindication in the modern production, for example, millions of yuan or even more can be lost when a petrochemical plant stops production for one hour, and the heat supply pipe network not only influences the production, but also influences the normal life of common people. In addition, the vortex shedding flowmeter generally has the problems of vibration interference, incapability of measuring the lower limit of small flow and incapability of measuring at ultrahigh temperature, and the problem of improving the performance-to-noise ratio is a difficult problem in the world.
With the development of science and technology, vortex shedding flowmeters which can be replaced on line are born. A plurality of structural designs of the existing online replaceable vortex shedding flowmeter or other types of vortex shedding flowmeters exist.
For example, the sensing head of the vortex street flow sensor which can be replaced under the condition of constant flow and provided by the patent No. CN01205954.4 and the vortex street flow meter which is provided by the patent No. CN101979964B and can replace the sensor on line both adopt the insertion structure, and the common point is that the vibrating rod of the probe (or the sensor and the sensing head) provided with the detecting element is inserted into another similar metal vibrating rod (dowel bar) or an elastic body to be inserted into the supporting cavity, and the other common point is that the long strip-shaped piezoelectric crystal detecting element is adopted. The defects of the probe are that the production and the manufacture are complex, the processing and the assembly are difficult, particularly, the contact point of the plugging structure is easy to generate vibration noise, the transmission of the vortex force is influenced, the signal quality is far inferior to that of a single probe structure, the vibration resistance is poor, the signal noise is poor, the probe cannot work normally in serious conditions, and the small flow is difficult to measure.
Further, like the on-line replacement type vortex street flowmeter provided in CN103196498B, the vibration sensing plate is easily disturbed by vibration, and the vortex force bar of the probe will generate self-vibration and resonance interference, so that the signal quality is poor and the signal-to-noise ratio is poor. And because of the design of the vibration sensing piece, the problem exists; the area of the vibration sensing piece is large, the thickness of the vibration sensing piece is thick, signals are weak, the pressure resistance is poor, explosion risks exist, the signal-to-noise ratio is poor, various defects exist in the structure, the small-flow measurement is difficult, and the quality of the signal-to-noise ratio is an important index directly influencing the performance of the flowmeter. This problem is urgently needed to be solved.
The structure of the above-mentioned flowmeter also has the following common defects: the thinner the thickness of the vibration sensing piece is, the higher the sensitivity is, but the poorer the pressure resistance is, the explosion is easy to generate; the area of the detection sensor is large, the size of the detection sensor is large, the area of the vibration sensing piece is also large, the thickness of the vibration sensing piece is also thick, and the sensitivity is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an explosion-proof response of high sensitivity detects sensor measuring device overcomes the not enough of aforementioned prior art, has both satisfied the requirement of sensitivity and has satisfied compressive capacity's requirement, has reduced piezoceramics response element or the activity sensor of constituteing by piezoceramics response element promptly detect the sensor with feel the area of contact of shaking the piece to reduce vibrations interference or signal noise, not only combatting earthquake, prevent from shaking in addition, thereby improved the SNR, can satisfy the fluid measurement requirement of low discharge, wide range, ultra-temperature, superhigh pressure, and measure the high accuracy height.
The utility model provides a technical scheme that its technical problem adopted is:
a high-sensitivity explosion-proof induction detection sensor measuring device comprises a measuring cavity, wherein the measuring cavity is a welding type thread measuring cavity or a flange type thread measuring cavity; the lower end part of the measuring cavity is provided with a vibration sensing piece, the lower end of the vibration sensing piece is provided with a cylinder, the lower end of the cylinder is provided with a damping signal vibration mechanism, a detection sensor is arranged in the measuring cavity, the vibration sensing piece is an annular groove sheet, the upper end surface or/and the lower end surface of the vibration sensing piece is provided with an annular groove and an annular sheet, the detection sensor is arranged on the upper end surface of the annular groove sheet in a packaging or fastening piece pressing mode, or the upper end surface of the vibration sensing piece is provided with a section of upper end cylinder, and the detection sensor is arranged on the end surface of the upper end cylinder in a packaging or fastening piece pressing mode; the vibration damping signal vibration mechanism is stressed by vortex acting force and converts the vortex acting force into stress, the cylinder transmits the stress to the detection sensor through the vibration sensing piece, if the annular groove is arranged at the upper end of the vibration sensing piece, an upper end cylinder is formed at the upper end, the upper end cylinder transmits the stress of the cylinder at the lower end of the vibration sensing piece to the detection sensor, the annular groove is arranged at the upper end of the vibration sensing piece, the annular groove has the advantages that other surfaces of the vibration sensing piece are not contacted with the detection sensor, the sensitivity is improved, the anti-interference capacity including vibration is improved, the performance of the annular groove and the annular sheet arranged at the upper end surface of the vibration sensing piece is superior to the performance of the annular groove arranged at the lower end surface of the vibration sensing piece, and the performance of the vibration sensing piece when the annular.
When the high-sensitivity explosion-proof induction detection sensor measuring device is used, the acting force generated by the vortex acts on one side of the damping signal vibration mechanism, and the damping signal vibration mechanism is connected with the column body into a whole; the cylinder body is combined with the vibration sensing piece into a whole, the combination part of the cylinder body and the vibration sensing piece forms an acting force bending moment area, the lift force is transmitted to the annular thin sheet at the bottom of the annular groove of the vibration sensing piece, the detection sensor is pressed or packaged on the vibration sensing piece in the measurement cavity, the stress received by the detection sensor in the corresponding bending moment area enables the piezoelectric ceramic element to generate a piezoelectric charge effect, namely a flow signal is transmitted to the meter head of the intelligent amplifier, parameters such as instantaneous flow, accumulated flow and the like are displayed, and a standard signal is output.
Further, at least the vibration damping signal vibration mechanism in the high-sensitivity explosion-proof induction detection sensor measuring device is made of light metal materials or non-metal materials, such as titanium alloy, aluminum alloy, carbon fiber or PPS plastic.
Further, the thickness of the annular thin slice is 0.2-3 mm; the width of the annular groove arranged on the damping sheet is 0.3-5 mm; the sensitivity and the anti-interference capability of the vibration sensing piece are good in the range.
Further, the damping signal vibration mechanism is a damping signal vibration body; the damping signal vibrating body is of a vibrating body structure which extends from bottom to top in an inclined plane and is thin at the lower end and thick at the upper end; the length of the vibration-damping signal vibration body is 5-25mm, the width of the vibration-damping signal vibration body is 2-12mm, and the thickness of the lower end of the vibration-damping signal vibration body is 0.05-1.5 mm.
The technical scheme of the utility model, in order to obtain better SNR, feel and shake the piece design and not only will improve compressive capacity but also will improve sensitivity and still reduce noise and vibrations and disturb. The vibration sensing piece is designed into a structure that the bottom of the piece is provided with an annular groove or/and the top of the piece is provided with an annular groove, and the inner diameter of the annular groove is consistent with the diameter of the column body to form an acting force bending moment area. The sensitivity of the bottom of the annular groove, namely the annular thin sheet, is higher as the thickness is thinner, but the pressure resistance is poorer as the thickness is thinner, which is a contradiction, and the sensitivity of the early product detection sensor is large in area, large in volume, large in area, thick in thickness and poor. The flow pressure of the medium in the industrial pipeline is high; from several MPa to dozens of Mpa, this means that the thin slice has the risk of safe explosion, consequently the utility model designs and overcome the defect that has not had the ring channel before, has both satisfied the requirement of sensitivity and has satisfied the requirement of compressive capacity. In addition, when the upper end face of the vibration sensing piece is provided with the annular groove, a cylinder is formed inside the annular groove, and a small platform is formed on the upper end face of the cylinder, so that the contact area between the detection sensor and the vibration sensing piece is reduced, and vibration interference or signal noise is reduced.
The utility model has the advantages that: compared with the prior art, the utility model discloses an explosion-proof response of high sensitivity detects sensor measuring device has following advantage: the vibration damping device has the advantages of reasonable structural design, good signal-to-noise ratio of the vibration damping signal vibration mechanism, small volume, light weight and short moment; the sensitivity requirement and the pressure resistance requirement are met; when the upper end surface of the vibration sensing piece is provided with the annular groove, a cylinder is formed inside the annular groove, and a small platform is formed on the upper end surface of the cylinder, so that the contact area between the detection sensor and the vibration sensing piece is reduced, and vibration interference or signal noise is reduced; the fluid measurement requirements of small flow, wide range, ultrahigh temperature and ultrahigh pressure can be met, and the measurement precision is high.
Drawings
Fig. 1 is a schematic front view (partially cut away) of the structure of embodiment 1 of the present invention;
fig. 2 is a schematic side view of the structure of embodiment 1 of the present invention;
wherein, 1 measures the cavity, 2 feels and shakes the piece, 3 cylinders, 4 shock attenuation signal vibration mechanism, 5 detection sensor, 6 ring channels, 7 ring slices.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
Example 1
In the embodiments shown in fig. 1 and 2, a high-sensitivity explosion-proof induction detection sensor measuring device comprises a measuring cavity 1, wherein the measuring cavity 1 is a welding type thread measuring cavity or a flange type thread measuring cavity; the lower end of the measuring cavity 1 is provided with a vibration sensing piece 2, the lower end of the vibration sensing piece 2 is provided with a cylinder 3, the lower end of the cylinder 3 is provided with a damping signal vibration mechanism 4, a detection sensor 5 is arranged inside the measuring cavity 1, the vibration sensing piece 2 is a circular thin sheet with a lower end face provided with an annular groove 6, and the detection sensor 5 is arranged on the upper end face of the vibration sensing piece 2 in a packaging or fastener pressing mode.
In this embodiment, the high-sensitivity explosion-proof induction detection sensor measuring device is made of a light metal material.
In this embodiment, the difference between the thickness of the vibration sensing piece 2 and the thickness of the annular groove 6 is 0.5 mm; the difference between the radius of the damping sheet 2 and the outer diameter of the annular groove 6 is 0.8 mm.
In this embodiment, the vibration reduction signal vibration mechanism 4 is a vibration reduction signal vibration body having a structure in which a lower end extending from bottom to top in an inclined plane is thin and an upper end is thick.
In this embodiment, the vibration-damping signal vibrator has a length of 25mm, a width of 12mm, and a lower end thickness of 0.5 mm.
The working principle is as follows: the utility model discloses an explosion-proof response detection sensor measuring device of high sensitivity, the effort that the swirl produced is used in one side of shock attenuation signal pendulum, because shock attenuation signal pendulum links into an integrated entity with cylinder 3, and cylinder 3 combines into wholly with sensing vibrations piece 2 again, it combines the position to constitute the effort bending range region, with lift force transmission to the tank bottom of the ring channel of sensing vibrations piece 2, on the sense vibrations piece 2 because of 5 pressure equipment of detection sensor or encapsulation in measuring cavity 1, detection sensor 5 becomes the piezoelectricity charge effect in corresponding bending range region and flow signal transmits the smart amplifier table overhead, show instantaneous flow and cumulative flow isoparametric, and output standard signal.
The high-sensitivity measuring device of the explosion-proof inductive detecting sensor in the embodiment 1 has the lower limit gas flow rate of about 1.98m/s and the anti-vibration effect of 1.0 g.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides an explosion-proof response of high sensitivity detects sensor measuring device which characterized in that: the vibration-sensing measuring device comprises a measuring cavity, wherein a vibration-sensing piece is arranged at the lower end part of the measuring cavity, a cylinder is arranged at the lower end of the vibration-sensing piece, a vibration-damping signal vibration mechanism is arranged at the lower end of the cylinder, and a detection sensor is arranged in the measuring cavity; the upper end surface or/and the lower end surface of the vibration sensing piece is/are provided with an annular groove and an annular sheet, and the detection sensor is arranged on the upper end surface of the vibration sensing piece; or the upper end cylinder is arranged on the upper end surface of the vibration sensing piece, and the detection sensor is arranged on the end surface of the upper end cylinder.
2. A high sensitivity explosion proof inductive test sensor measuring device as claimed in claim 1, wherein: at least the vibration-damping signal vibration mechanism in the anti-vibration high-sensitivity induction detection sensor measuring device is made of titanium alloy materials, or aluminum alloy materials, or carbon fiber materials, or plastic materials.
3. A high sensitivity explosion proof inductive test sensor measuring device as claimed in claim 1, wherein: the thickness of the bottom of the annular groove formed in the vibration sensing piece, namely the thickness of the annular sheet, is 0.3-3 mm.
4. A high sensitivity explosion proof inductive test sensor measuring device as claimed in claim 1, wherein: the width of the annular groove is 0.5-5 mm.
5. A high sensitivity explosion proof inductive test sensor measuring device as claimed in claim 1, wherein: the vibration damping signal vibration mechanism is a vibration damping signal vibration body.
6. A high sensitivity explosion proof inductive test sensor measuring device as claimed in claim 1, wherein: the vibration damping signal vibrator is a vibrator structure which extends from bottom to top in an inclined plane, is thin at the lower end and thick at the upper end.
7. A high sensitivity explosion proof inductive test sensor measuring device as claimed in claim 1, wherein: the length of the vibration-damping signal vibration body is 5-25mm, the width of the vibration-damping signal vibration body is 2-12mm, and the thickness of the lower end of the vibration-damping signal vibration body is 0.05-1.5 mm.
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| CN202022329262.6U CN213336374U (en) | 2020-10-19 | 2020-10-19 | High-sensitivity explosion-proof induction detection sensor measuring device |
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| CN202022329262.6U CN213336374U (en) | 2020-10-19 | 2020-10-19 | High-sensitivity explosion-proof induction detection sensor measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378498A (en) * | 2020-10-19 | 2021-02-19 | 姚宁 | Anti-seismic high-sensitivity induction detection sensor measuring device |
| CN113393633A (en) * | 2021-07-09 | 2021-09-14 | 西安忠舍天域新能源安全技术有限公司 | Deflagration fire detection method and novel deflagration fire detector |
-
2020
- 2020-10-19 CN CN202022329262.6U patent/CN213336374U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378498A (en) * | 2020-10-19 | 2021-02-19 | 姚宁 | Anti-seismic high-sensitivity induction detection sensor measuring device |
| CN113393633A (en) * | 2021-07-09 | 2021-09-14 | 西安忠舍天域新能源安全技术有限公司 | Deflagration fire detection method and novel deflagration fire detector |
| CN113393633B (en) * | 2021-07-09 | 2023-09-26 | 西安忠舍天域新能源安全技术有限公司 | Deflagration fire detection method and novel deflagration fire detector |
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