CN211552996U - Electric buoy liquid level meter based on magnetostrictive principle - Google Patents
Electric buoy liquid level meter based on magnetostrictive principle Download PDFInfo
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- CN211552996U CN211552996U CN201922182003.2U CN201922182003U CN211552996U CN 211552996 U CN211552996 U CN 211552996U CN 201922182003 U CN201922182003 U CN 201922182003U CN 211552996 U CN211552996 U CN 211552996U
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Abstract
The utility model discloses an electricity flotation pontoon level gauge based on magnetostriction principle relates to level gauge technical field. The utility model comprises an electronic scale part and a float bowl part arranged at the bottom of the electronic scale part, wherein a magnetostrictive displacement sensor is arranged in the electronic scale part, and the electronic scale part comprises a sleeve-shaped shell, a lower spring retainer ring and a T-shaped upper spring pressing structure; the T-shaped spring upper pressing structure comprises a spring upper pressing ring, a sleeve rod and a buoy hook, the sleeve rod is sleeved with a spring, and two ends of the spring are respectively and fixedly connected with the spring upper pressing ring and a spring lower retainer ring; a limiting slide hole channel is vertically arranged in the loop bar; the magnetostrictive displacement sensor comprises an electronic bin and a magnetostrictive measuring rod which are arranged on the top of the shell, wherein the magnetostrictive measuring rod extends into the loop bar and is in clearance fit with the limiting slide hole. The utility model discloses can carry out the liquid medium measurement of high temperature, high pressure, strong corruption, good reliability can work for a long time steadily, make full use of's magnetostriction liquid displacement sensor's performance advantage.
Description
Technical Field
The utility model belongs to the technical field of the level gauge, especially, relate to an electric float level gauge based on magnetostrictive principle.
Background
Under the influence of different liquid media and various measuring environments and the consideration of cost performance, measuring precision, reliability and the like, one type of liquid level meter is difficult to meet various liquid level measuring requirements. Common types of level gauges are: tuning fork vibration, magnetic suspension, pressure, capacitance, reed pipe, ultrasonic wave, magnetic turning plate, radar, magnetostriction and the like.
An electric float level gauge is an indirect liquid level measuring method. The float bowl is used for feeling buoyancy under the different liquid levels, and the difference of gravity and buoyancy acting on the float bowl is measured with electronic scale in upper portion. Thus, the sensing element does not need to be in contact with the medium to be measured. Therefore, the method can be used for measuring the high-temperature high-pressure corrosion liquid.
The key component of the electrical buoy is the upper electronic scale. The high-temperature and high-pressure influence makes it very difficult to achieve high reliability, high precision and stable performance. Common sensing elements for electrical buoys are: the Hall device is a magnetic sensitive and strain gauge force sensitive element. The utility model provides a scheme based on magnetostrictive principle. Compared with other designs, the scheme has the following advantages: moderate cost, high precision and easy realization. Therefore, in order to solve the problems, the electric buoy liquid level meter based on the magnetostrictive principle has important significance.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an electricity flotation pontoon level gauge based on magnetostrictive principle can carry out the liquid medium measurement of high temperature, high pressure, strong corruption, and good reliability can work for a long time steadily, make full use of's magnetostrictive liquid displacement sensor's performance advantage.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model discloses an electric float liquid level meter based on magnetostrictive principle, including the electronic scale part and set up the flotation pontoon part in the electronic scale part bottom, the built-in magnetostrictive displacement sensor that has of electronic scale part, the electronic scale part includes the casing of cover barrel type, sets up the retaining ring under the spring of bottom in the casing, sliding fit in the T type spring upper pressure structure in the casing; the T-shaped spring upper pressing structure comprises an upper spring pressing ring in clearance fit with the inner peripheral side wall of the shell, a loop bar vertically arranged at the bottom of the upper spring pressing ring, the other end of the loop bar is in clearance fit with a loop hole of a lower spring retainer ring, and a buoy hook arranged at the bottom of the loop bar, wherein a spring is sleeved on the loop bar, and two ends of the spring are respectively fixedly connected with the upper spring pressing ring and the lower spring retainer ring; a limiting slide hole channel is vertically formed in the sleeve rod;
the magnetostrictive displacement sensor comprises an electronic bin arranged at the top of the shell and a magnetostrictive measuring rod arranged at the bottom of the electronic bin, and the magnetostrictive measuring rod extends into the loop bar and is in clearance fit with the limiting slide hole;
the buoy part adopts a cylindrical buoy, and the top of the buoy part is connected with the loop bar through a buoy hook.
Furthermore, the magnetostrictive measuring rod is inserted into the center of the top of the shell in a penetrating manner, and the magnetostrictive measuring rod is a straight rod which is consistent with the direction of the limiting sliding hole in the sleeve rod.
Furthermore, the inner ring of the pressing ring on the spring is embedded with permanent magnets, the polarities of the end parts of the permanent magnets positioned on two opposite sides of the magnetostrictive measuring bar are opposite, and the pressing ring on the spring forms an annular magnetic field on the periphery of the magnetostrictive measuring bar.
Further, the force applied to the spring is proportional to the displacement deformation amount generated by the spring.
Furthermore, a front damper matched with the top end of the magnetostrictive measuring rod and an echo detection mechanism for echo detection are arranged in the electronic bin.
The utility model discloses following beneficial effect has:
the utility model organically combines the electric float level meter and the magnetostrictive displacement sensor together to form a novel product, which has the characteristics of good reliability, high precision, convenient use and moderate price; the device can measure high-temperature, high-pressure and strong-corrosion liquid media, has good reliability and can work stably for a long time; the performance advantages of the magnetostrictive liquid displacement sensor are fully utilized, meanwhile, the application range of the magnetostrictive displacement sensor is widened, and a new field is opened up for the development and popularization of the magnetostrictive technology.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of an electric float level gauge based on the magnetostrictive principle according to the present invention;
FIG. 2 is a schematic view of the electronic scale portion of FIG. 1;
fig. 3 is a schematic view of the working principle of the magnetostrictive displacement sensor according to the present invention;
FIG. 4 is a schematic diagram of a waveform of an echo of the magnetostrictive displacement sensor of FIG. 3 in operation;
in the drawings, the components represented by the respective reference numerals are listed below:
1-an electronic scale part, 2-a buoy part, 3-an electronic cabin, 4-a magnetostrictive measuring rod, 5-a shell, 6-a T-shaped spring pressing structure, 601-a spring pressing ring, 6011-a permanent magnet, 602-a sleeve rod, 6021-a limiting slide hole channel, 603-a buoy hook, 7-a spring, 8-a spring lower retainer ring, 9-a front damper and 10-an echo detection mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "bottom", "inner", "peripheral side", "one end", "the other end", "clearance fit", "top", and the like indicate positional or positional relationships for convenience of description only and to simplify the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-2, an electric float level gauge based on magnetostrictive principle according to the present invention includes an electronic scale portion 1 and a float portion 2 disposed at the bottom of the electronic scale portion 1, wherein the electronic scale portion 1 is internally provided with a magnetostrictive displacement sensor, and the electronic scale portion 1 includes a sleeve-shaped housing 5, a lower spring retainer ring 8 disposed at the bottom of the housing 5, and a T-shaped upper spring pressing structure 6 slidably fitted in the housing 5; the T-shaped spring upper pressing structure 6 comprises an upper spring pressing ring 601 in clearance fit with the inner peripheral side wall of the shell 5, a sleeve rod 602 vertically arranged at the bottom of the upper spring pressing ring 601, the other end of the sleeve rod 602 in clearance fit with a ring hole of the lower spring retainer ring 8, and a buoy hook 603 arranged at the bottom of the sleeve rod 602, wherein the sleeve rod 602 is sleeved with a spring 7, and two ends of the spring 7 are respectively and fixedly connected with the upper spring pressing ring 601 and the lower spring retainer ring 8; a limiting slide hole channel 6021 is vertically arranged in the sleeve rod 602;
the magnetostrictive displacement sensor comprises an electronic bin 3 arranged at the top of a shell 5 and a magnetostrictive measuring rod 4 arranged at the bottom of the electronic bin 3, wherein the magnetostrictive measuring rod 4 extends into the sleeve rod 602 and is in clearance fit with the limiting slide hole 6021;
the pontoon portion 2 is a cylindrical pontoon, and the top of the pontoon portion 2 is connected to the stem 602 by a pontoon hook 603.
The magnetostrictive measuring rod 4 is inserted through the center of the top of the shell 5, and the magnetostrictive measuring rod 4 is a straight rod which is consistent with the direction of the limiting sliding hole 6021 in the sleeve rod 602.
The stress of the spring 7 is in direct proportion to the displacement deformation generated by the spring, and the stress of the electronic scale is the difference value of the self weight of the buoy and the buoyancy.
Wherein, the electronic cabin 3 is internally provided with a front damper 9 matched with the top end of the magnetostrictive measuring rod 4 and an echo detection mechanism 10 for echo detection;
the buoyancy force borne by the buoy part 2 is in direct proportion to the liquid level height, the stress of the electronic scale is the difference value of the self weight of the buoy part 2 and the buoyancy force, and the stress acts on the spring through the buoy hook and the pressing ring on the spring to generate displacement in direct proportion to the stress; the magnetostrictive displacement sensor can measure the deformation of the spring under stress, so that the liquid level data of the buoy can be calculated; the magnetostrictive measuring rod 4 is not only used for measuring the position of the pressing ring 601 on the spring, but also used as a guide rod of the pressing ring 601 on the spring, and can play a role in guiding the pressing ring 601 on the spring;
the material of the permanent magnet 6011 embedded in the pressing ring 601 on the spring includes but is not limited to: neodymium iron boron alloy, alnico alloy, ferrite material; when measuring high-temperature liquid, a section of radiating pipe is added between the buoy part 2 and the electronic scale part 1.
The utility model discloses a theory of operation is:
the electric float level meter based on the magnetostrictive principle combines the electric float level meter and the magnetostrictive displacement sensor together to form a novel product, the length of the float part 2 is greater than the height of the measured upper and lower liquid levels, the buoyancy and the liquid level height that the float part 2 receives are in direct proportion, the stress of the electronic scale part 1 is the difference value of the dead weight and the buoyancy of the float part 2, the stress acts on the spring 7 through the float hook 9 and the pressing ring 6 on the spring, and the displacement in direct proportion to the stress is generated. The pressure ring 6 is embedded to have permanent magnet on the spring, and magnetostrictive displacement sensor 1 can measure the atress deflection of spring 7, can calculate 2 liquid level data of flotation pontoon part from this, and this level gauge mainly used high temperature high pressure corrodes the level measurement of liquid, and the characteristics of product are: high precision, reliable performance, good long-term stability and convenient use;
as shown in fig. 3, which shows the main internal structure of a magnetostrictive displacement sensor, it includes: a waveguide wire (equivalent to a magnetostrictive measuring rod 4), an echo detection mechanism 10, a magnetic ring (equivalent to a spring upper pressing ring 601), a permanent magnet 6011, a front damper 9, and a rear damper (equivalent to a loop bar 602); when the magnetostrictive displacement sensor works, the measuring circuit firstly generates a current excitation, and the current forms a ring-shaped magnetic field around the waveguide wire and propagates at the speed of light. When the annular magnetic field intersects with the magnetic field generated by the permanent magnet 6011 inside the magnetic ring (the pressing ring 601 on the spring), the waveguide wire will generate a mechanical torsional vibration due to the magnetostrictive effect. The vibrations are transmitted back in the form of mechanical waves and picked up by the echo detection means 2. The unwanted echo will be absorbed by the front damper 9 and the rear damper (corresponding to the loop bar 602). By measuring the time difference between the 'emission pulse' and the 'echo pulse', the relative position of the magnetic ring (floater) on the measuring rod can be calculated, so that the position data of the magnetic ring (floater) can be achieved.
As shown in fig. 4, which shows a schematic diagram of the waveform of the echo when the magnetostrictive displacement sensor is in operation. The horizontal axis is a time coordinate, and the vertical axis is the voltage amplitude of the echo detection signal. In the figure: l is the length of the position of the magnetic ring (the pressing ring 601 on the spring) relative to the magnetostrictive measuring rod 4; t is the echo propagation time between the transmit pulse and the echo pulse. When t is obtained through measurement, the required position data of the magnetic ring (the pressing ring 601 on the spring) can be calculated according to the propagation speed v of the echo wave on the waveguide wire. The formula is as follows: l ═ v · t.
Compared with the prior art, the utility model the following advantage including:
the utility model organically combines the electric float level meter and the magnetostrictive displacement sensor together to form a novel product, which has the characteristics of good reliability, high precision, convenient use and moderate price; the device can measure high-temperature, high-pressure and strong-corrosion liquid media, has good reliability and can work stably for a long time; the performance advantages of the magnetostrictive liquid displacement sensor are fully utilized, meanwhile, the application range of the magnetostrictive displacement sensor is widened, and a new field is opened up for the development and popularization of the magnetostrictive technology.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides an electric float liquid level meter based on magnetostrictive principle, includes electronic scale part (1) and sets up in float part (2) of electronic scale part (1) bottom, electronic scale part (1) embeds there is magnetostrictive displacement sensor, its characterized in that:
the electronic scale part (1) comprises a sleeve-shaped shell (5), a lower spring retainer ring (8) arranged at the bottom in the shell (5), and a T-shaped upper spring pressing structure (6) in sliding fit with the shell (5); the T-shaped spring upper pressing structure (6) comprises an upper spring pressing ring (601) in clearance fit with the inner peripheral side wall of the shell (5), a sleeve rod (602) vertically arranged at the bottom of the upper spring pressing ring (601) and with the other end in clearance fit with a ring hole of the lower spring retainer ring (8), and a buoy hook (603) arranged at the bottom of the sleeve rod (602), wherein a spring (7) is sleeved on the sleeve rod (602), and two ends of the spring (7) are respectively and fixedly connected with the upper spring pressing ring (601) and the lower spring retainer ring (8); a limiting slide hole channel (6021) is vertically arranged in the sleeve rod (602);
the magnetostrictive displacement sensor comprises an electronic bin (3) arranged at the top of a shell (5) and a magnetostrictive measuring rod (4) arranged at the bottom of the electronic bin (3), wherein the magnetostrictive measuring rod (4) extends into a loop bar (602) and is in clearance fit with a limiting sliding hole channel (6021);
the buoy part (2) adopts a cylindrical buoy, and the top of the buoy part (2) is connected with a loop bar (602) through a buoy hook (603).
2. The magnetostrictive principle-based electric buoy liquid level gauge according to claim 1, characterized in that the magnetostrictive measuring rod (4) is inserted through the top center of the housing (5), and the magnetostrictive measuring rod (4) is a straight rod which is aligned with the direction of the limiting slide hole (6021) in the sleeve rod (602).
3. The electric buoy liquid level meter based on the magnetostrictive principle as claimed in claim 1, wherein a permanent magnet (6011) is embedded around the inner side of the pressing ring (601) on the spring, the polarities of the ends of the permanent magnets (701) on the two opposite sides of the magnetostrictive measuring rod (4) are opposite, and an annular magnetic field is formed around the magnetostrictive measuring rod (4) by the pressing ring (601) on the spring.
4. An electric float level gauge based on the magnetostrictive principle according to claim 1, characterized in that the force exerted by the spring (7) is proportional to the amount of displacement deformation it generates.
5. An electric float level gauge based on the magnetostrictive principle according to claim 1, characterized in that a front damper (9) matched with the top end of the magnetostrictive measuring rod (4) and an echo detection mechanism (10) for echo detection are arranged in the electronic cabin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182003.2U CN211552996U (en) | 2019-12-09 | 2019-12-09 | Electric buoy liquid level meter based on magnetostrictive principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182003.2U CN211552996U (en) | 2019-12-09 | 2019-12-09 | Electric buoy liquid level meter based on magnetostrictive principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211552996U true CN211552996U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922182003.2U Expired - Fee Related CN211552996U (en) | 2019-12-09 | 2019-12-09 | Electric buoy liquid level meter based on magnetostrictive principle |
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| Country | Link |
|---|---|
| CN (1) | CN211552996U (en) |
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2019
- 2019-12-09 CN CN201922182003.2U patent/CN211552996U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200922 Termination date: 20211209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |