阅读说明：本技术 -160℃超低温液位计 (Ultra-low temperature liquid level meter at-160 DEG C ) 是由 蓝若灵 蓝伟 于 2020-12-30 设计创作，主要内容包括：本发明为克服现有技术中的磁性翻板液位计在测量低温介质时容易结冰而影响正常使用的问题,本发明公开了一种-160℃超低温液位计,包括液位计主体；浮子；隔冷隔水套,包裹安装在所述液位计主体外；磁翻显示机构；以及隔离仓,安装在所述隔冷隔水套包裹的所述液位计主体外,并将部分所述液位计主体、部分所述隔冷隔水套和所述磁翻显示机构罩入其内部；其中,所述隔离仓内部区域抽真空；所述隔离仓朝向所述磁翻显示机构的部分透明可视。本发明提供了一种-160℃超低温液位计,通过隔冷隔水套减少低温介质释放的冷量,隔绝水汽,并利用隔离仓将磁翻显示机构的工作区隔离成真空区域,以降低水汽结冰、结霜影响,保证正常的工作状态。(The invention discloses a-160 ℃ ultra-low temperature liquid level meter, which aims to solve the problem that the normal use of the magnetic flap liquid level meter is influenced by the fact that the magnetic flap liquid level meter is easy to freeze when a low-temperature medium is measured in the prior art, and comprises a liquid level meter main body; a float; the cold and water insulation sleeve is wrapped and arranged outside the liquid level meter main body; a magnetic flip display mechanism; the isolation bin is arranged outside the liquid level meter main body wrapped by the cold insulation and water insulation sleeve and covers part of the liquid level meter main body, part of the cold insulation and water insulation sleeve and the magnetic turning display mechanism; wherein the inner area of the isolation bin is vacuumized; the part of the isolation bin facing the magnetic turning display mechanism is transparent and visible. The invention provides a-160 ℃ ultra-low temperature liquid level meter, which reduces the cold quantity released by a low-temperature medium through a cold insulation and water insulation sleeve, isolates water vapor, and utilizes an isolation bin to isolate a working area of a magnetic turning display mechanism into a vacuum area so as to reduce the influence of water vapor freezing and frosting and ensure the normal working state.)

1.-160 ℃ ultra-low temperature level gauge characterized by: comprises that

A gauge body;

the floater is internally provided with a permanent magnet, is arranged in the liquid level meter main body and floats on the liquid level by buoyancy;

the cold and water insulation sleeve is wrapped and arranged outside the liquid level meter main body;

the magnetic turning display mechanism is provided with a scale plate and a magnetic turning plate and is arranged outside the liquid level meter main body wrapped by the cold-insulating and water-insulating sleeve; the magnetic turnover plate is matched with the permanent magnet and overturns to display the liquid level height; and

the isolation bin is arranged outside the liquid level meter main body wrapped by the cold insulation and water insulation sleeve and covers part of the liquid level meter main body, part of the cold insulation and water insulation sleeve and the magnetic turning display mechanism;

wherein the inner area of the isolation bin is vacuumized; the part of the isolation bin facing the magnetic turning display mechanism is transparent and visible.

2. The ultra low temperature liquid level gauge of-160 ℃ as set forth in claim 1, wherein: the liquid level meter main body comprises

The main pipe is communicated from top to bottom;

the two connecting pipes are respectively communicated with the positions near the two ends of the main pipe;

the upper end enclosure is connected with the upper end flange of the main pipe; and

and the lower end enclosure is provided with a drain valve and is connected with the lower end flange of the main pipe.

3. The ultra low temperature liquid level gauge of-160 ℃ as set forth in claim 1, wherein: the cold and water insulation sleeve comprises

The inorganic glass wool layer is wrapped and installed outside the liquid level meter main body; and

the aluminum foil layer is wrapped and arranged outside the inorganic glass cotton layer;

and a sealant is coated on the joint or the overlapping part of the aluminum foil layer.

4. The ultra low temperature liquid level gauge of-160 ℃ as set forth in claim 1, wherein: the isolation bin comprises

A left bin body;

the right bin body is provided with a vacuum pumping port and forms an open box-shaped structure after being combined with the left bin body; and

the transparent panel is opposite to the magnetic turning display mechanism and is arranged on one side of the opening of the open box-shaped structure;

the liquid level meter main body and the cold insulation and water insulation sleeve penetrate through the open box-shaped structure, and sealing glue is filled at the joint between the left bin body, the right bin body and the transparent panel and the joint between the left bin body and the cold insulation and water insulation sleeve.

5. The ultra low temperature liquid level gauge of-160 ℃ as set forth in claim 4, wherein: also comprises

The studs are correspondingly arranged on the outer walls of the left bin body and the right bin body;

two sides of the connecting piece penetrate through the studs on the outer walls of the left bin body and the right bin body; and

and the nut is matched with the stud.

6. The ultra low temperature liquid level gauge of-160 ℃ as set forth in claim 4, wherein: the open box-shaped structure is characterized in that a step is formed in the edge of the open side of the open box-shaped structure, and the edge of the transparent panel is clamped into the step.

7. The ultra low temperature liquid level gauge of-160 ℃ as set forth in claim 4, wherein: and a left drying cavity and a right drying cavity are arranged on the inner walls of the left bin body and the right bin body, and drying agents are filled in the left drying cavity and the right drying cavity.

8. The ultra low temperature liquid level gauge of-160 ℃ as set forth in claim 4, wherein: and heat absorption coatings are coated on the outer walls of the left bin body and the right bin body.

Technical Field

The invention relates to a liquid level meter, in particular to a liquid level meter at an ultralow temperature of-160 ℃.

Background

The liquid level meter is widely applied to liquid level measurement in the fields of petroleum processing, food processing, chemical engineering, water treatment, pharmacy, electric power, papermaking, metallurgy, ships, boilers and the like, such as a glass plate liquid level meter, a quartz tube liquid level meter, a magnetic turning plate liquid level meter and the like.

However, when the existing magnetic flap liquid level meter measures a low-temperature medium, especially when the temperature of the medium is as low as-160 ℃, condensed water is easily generated outside a pipe of a liquid level meter main body and an indicator and freezes, and the normal measurement use of the liquid level meter is affected.

Disclosure of Invention

The invention provides a-160 ℃ ultra-low temperature liquid level meter for overcoming the problem that normal use is influenced by easy freezing of a magnetic flap liquid level meter in the prior art when a low-temperature medium is measured, wherein cold energy released by the low-temperature medium is reduced through a cold insulation and water insulation sleeve, water vapor is isolated, and a working area of a magnetic flap display mechanism is isolated into a vacuum area by utilizing an isolation bin, so that the influence of freezing and frosting of the water vapor is reduced, and the normal working state is ensured.

The technical scheme adopted by the invention is as follows:

-160 ℃ ultra-low temperature liquid level meter comprising

A gauge body;

the floater is internally provided with a permanent magnet, is arranged in the liquid level meter main body and floats on the liquid level by buoyancy;

the cold and water insulation sleeve is wrapped and arranged outside the liquid level meter main body;

the magnetic turning display mechanism is provided with a scale plate and a magnetic turning plate and is arranged outside the liquid level meter main body wrapped by the cold-insulating and water-insulating sleeve; the magnetic turnover plate is matched with the permanent magnet and overturns to display the liquid level height; and

the isolation bin is arranged outside the liquid level meter main body wrapped by the cold insulation and water insulation sleeve and covers part of the liquid level meter main body, part of the cold insulation and water insulation sleeve and the magnetic turning display mechanism;

wherein the inner area of the isolation bin is vacuumized; the part of the isolation bin facing the magnetic turning display mechanism is transparent and visible.

Further, the gauge body includes

The main pipe is communicated from top to bottom;

the two connecting pipes are respectively communicated with the positions near the two ends of the main pipe;

the upper end enclosure is connected with the upper end flange of the main pipe; and

and the lower end enclosure is provided with a drain valve and is connected with the lower end flange of the main pipe.

Further, the cold-insulating water jacket comprises

The inorganic glass wool layer is wrapped and installed outside the liquid level meter main body; and

the aluminum foil layer is wrapped and arranged outside the inorganic glass cotton layer;

and a sealant is coated on the joint or the overlapping part of the aluminum foil layer.

Further, the isolation bin comprises

A left bin body;

the right bin body is provided with a vacuum pumping port and forms an open box-shaped structure after being combined with the left bin body; and

the transparent panel is opposite to the magnetic turning display mechanism and is arranged on one side of the opening of the open box-shaped structure;

the liquid level meter main body and the cold insulation and water insulation sleeve penetrate through the open box-shaped structure, and sealing glue is filled at the joint between the left bin body, the right bin body and the transparent panel and the joint between the left bin body and the cold insulation and water insulation sleeve.

Further, also includes

The studs are correspondingly arranged on the outer walls of the left bin body and the right bin body;

two sides of the connecting piece penetrate through the studs on the outer walls of the left bin body and the right bin body; and

and the nut is matched with the stud.

Furthermore, a step is arranged on the edge of the open side of the open box-shaped structure, and the edge of the transparent panel is clamped into the step.

Furthermore, a left drying cavity and a right drying cavity are arranged on the inner walls of the left bin body and the right bin body, and drying agents are filled in the left drying cavity and the right drying cavity.

Further, the outer walls of the left bin body and the right bin body are coated with heat absorption coatings.

The invention has the beneficial effects that:

in order to solve the problem that normal use is influenced because the magnetic flap level gauge in the prior art is easy to freeze when measuring a low-temperature medium, the magnetic flap level gauge is improved on the basis of the original magnetic flap level gauge, and the ultralow temperature level gauge at minus 160 ℃ is designed. The liquid level meter comprises a liquid level meter main body, a floater, a cold-insulating and water-insulating sleeve, a magnetic turning display mechanism and an insulating bin. The float is arranged in the liquid level meter main body and floats on the liquid level under the action of buoyancy. The cold insulation and water insulation sleeve is wrapped and installed outside the liquid level meter main body, so that the cold quantity transferred outwards by low-temperature media in the liquid level meter main body is reduced, the heat transfer from an external environment to the liquid level meter main body is reduced, and water vapor is prevented from penetrating through the cold insulation and water insulation sleeve. The magnetic turning display mechanism is arranged outside the cold-insulating and water-insulating sleeve and is close to the outer wall of the liquid level meter main body as much as possible. The isolation bin is arranged outside the cold insulation and water insulation sleeve, and covers the magnetic turn display mechanism, a part of the liquid level meter main body and a part of the cold insulation and water insulation sleeve in the isolation bin. The liquid level meter reduces the cold quantity released by a low-temperature medium through the cold insulation and water insulation sleeve, isolates water vapor, and utilizes the isolation bin to isolate the working area of the magnetic turn display mechanism into a vacuum area so as to reduce the influence of water vapor freezing and frosting and ensure the normal working state, and the minimum use temperature can reach minus 160 ℃.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram I of an ultra-low temperature liquid level meter at-160 ℃ in the embodiment.

FIG. 2 is a schematic view showing the exploded structure of the ultra-low temperature liquid level meter at-160 ℃ in the embodiment.

FIG. 3 is the second exploded view of the ultra-low temperature level gauge at-160 deg.C in the example.

FIG. 4 is a schematic structural diagram II of the ultra-low temperature liquid level meter at-160 deg.C in the embodiment (the transparent panel is not shown in the figure).

FIG. 5 is the third schematic structural diagram of the ultra-low temperature liquid level meter at-160 deg.C in the example.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.

Embodiments of the invention are described in detail below with reference to the accompanying drawings.

In order to solve the problem that condensed water is easily generated outside a pipe of a liquid level meter main body and an indicator and freezes to influence the normal measurement and use of the liquid level meter when a magnetic turning plate liquid level meter measures a low-temperature medium, particularly when the temperature of the medium is as low as-160 ℃, the embodiment provides a-160 ℃ ultralow temperature liquid level meter, and the structure of the ultralow temperature liquid level meter is shown in attached figures 1-5.

The liquid level meter comprises a liquid level meter main body 1, a floater 2, a cold-insulating and water-insulating sleeve 3, a magnetic turning display mechanism 4 and an insulating bin 5. The float 2 is installed in the gauge body 1 and floats on the liquid surface by the buoyancy. The cold insulation and water insulation sleeve 3 is wrapped outside the liquid level meter main body 1, so that the cold quantity transferred outwards by low-temperature media in the liquid level meter main body 1 is reduced, the heat transfer from the external environment to the liquid level meter main body 1 is reduced, and water vapor is prevented from passing through the cold insulation and water insulation sleeve 3. The magnetic turn display mechanism 4 is arranged outside the cold-proof and water-proof sleeve 3 and is as close to the outer wall of the liquid level meter main body 1 as possible. The isolation bin 5 is installed outside the cold insulation water jacket 3 and covers the magnetic turn display mechanism 4, a part of the liquid level meter main body 1 and a part of the cold insulation water jacket 3 in the interior.

Specifically, the liquid level meter main body 1 is installed outside a container such as a liquid storage tank to be marked with liquid level, and comprises a main body pipe 11, two connecting pipes 12, an upper end enclosure 13 and a lower end enclosure 14.

The main pipe 11 is vertically through. Two connecting pipes 12 are respectively communicated with the vicinity of the upper and lower ends of the main body pipe 11. The upper seal head 13 and the lower seal head 14 are respectively connected with the upper end and the lower end of the main pipe 11 through flanges. The lower end enclosure 14 is further provided with a drain valve 141 for discharging the liquid medium in the main pipe 11.

The interior of the floater 2 is embedded with a permanent magnet. The float 2 is mounted in the main tube 11 and moves with a change in the liquid level in the main tube 11.

And the cold and water insulation sleeve 3 is wrapped and arranged on the surfaces of the main body pipe 11 and the two connecting pipes 12. The cold water-proof jacket 3 includes an inorganic glass wool layer 31 and an aluminum foil layer 32. The inorganic glass wool layer 31 and the aluminum foil layer 32 are both processed to be matched with the main body pipe 11 and the two connecting pipes 12 in shape and are attached to the main body pipe 11 and the two connecting pipes 12, and the aluminum foil layer 32 is positioned outside the inorganic glass wool layer 31. Or, the inorganic glass wool is laid on the main body pipe 11 and the two connecting pipes 12 to form an inorganic glass wool layer 31, and then wrapped with aluminum foil to form an aluminum foil layer 32. The aluminum foil layer 32 is coated with a sealant at the joint or overlap so that moisture or the like cannot penetrate through the aluminum foil layer 32.

The magnetic turn display mechanism 4 is mounted in the outer region of the main pipe 11 wrapped by the cold insulation and water insulation sleeve 3 along the length direction of the main pipe 11 by means of a hoop or the like, is as close as possible to the outer wall of the main pipe 11, and is arranged opposite to the connecting pipe 12. The magnetic flip display structure 4 includes a scale plate 41 and a magnetic flip plate 42. The scale plate 41 is provided with a groove, and a plurality of magnetic turning plates 42 are orderly arranged in the groove. When the floater 2 changes along with the liquid level, the permanent magnet inside the floater acts with the adjacent magnetic turning plate 42 to turn the floater. When the main tube 11 is filled with liquid, the color of red is displayed; when no liquid is present, white color is displayed. The red and white boundary is the actual liquid level position.

The isolation bin 5 is arranged on the main body pipe 11 in a clamping hoop mode and the like, covers the partial cold and water isolation sleeve 3, the partial main body pipe 11, the partial connecting pipe 12 and the magnetic turning display mechanism 4, and vacuumizes the interior of the isolation bin. The magnetic flip display mechanism 4 is partially transparent to the isolation bin 5, that is, the liquid level display change on the magnetic flip display mechanism 4 can be observed through the isolation bin 5. Because the interior of the isolation bin 5 is in a vacuum state, after the cold energy transferred by the low-temperature medium is transferred into the isolation bin 5, the cold energy is not enough to freeze and frost due to the absence of water vapor or extremely low water vapor content, so that the overturning of the magnetic turning plate 42 on the magnetic turning display mechanism 4 cannot be influenced, and the normal use can be realized.

The isolation bin 5 comprises a left bin body 51, a right bin body 52 and a transparent panel 53. The left bin body 51 and the right bin body 52 have similar structures and form a rectangular open box-shaped structure after being combined. The side wall of the right bin body 52 is provided with a vacuum pumping port 521. The length direction of the open box-shaped structure is consistent with the length direction of the main body pipe 11, and the open surface of the open box-shaped structure is positioned on one side of the magnetic turning display mechanism 4. The cold and water insulation sleeve 3, the main body pipe 11 and the connecting pipe 12 penetrate through the open box-shaped structure. The transparent panel 53, which is made of transparent glass or PMMA or PC, is installed on the open side of the open box-like structure. The joints among the left bin body 51, the right bin body 52 and the transparent panel 53 and the joints between the left bin body 51, the right bin body 52 and the cold-insulating and water-insulating sleeve 3 are filled with sealing glue, so that the vacuum degree in the isolation bin 5 is ensured. After the area between the isolation bin 5 and the cold insulation water jacket 3 is vacuumized through the vacuum pumping port 511, the water vapor content in the area can be reduced, and the possibility of icing and frosting is reduced.

Studs 54 are correspondingly arranged on the outer walls of the left bin body 51 and the right bin body 52, and two sides of a connecting piece 55 penetrate through the studs 54 and are locked by nuts 56, so that the left bin body 51 and the right bin body 52 are connected into a whole. On the open box-shaped structure that left storehouse body 51 and right storehouse body 52 constitute, open one side edge has seted up the step, and transparent panel 53 edge card is gone into in this step, from improving transparent panel 53's installation rate and reliability greatly. A plurality of left drying cavities 511 and right drying cavities 522 are also arranged on the inner walls of the left bin body 51 and the right bin body 52. The top of the left drying cavity 512 and the top of the right drying cavity 522 are open, and the drying agents such as calcium chloride, silica gel, calcium oxide and the like are filled in the left drying cavity 512 and the right drying cavity 522, and the drying agents adsorb the residual water vapor in the isolation bin 5 to maintain the internal drying degree. The outer walls of the left bin body 51 and the right bin body 52 are coated with heat absorption coatings, such as graphite coatings and graphite-alumina coating layers, and the heat absorption coatings can improve the temperature of the outer wall of the isolation bin 5 by absorbing solar energy, reduce the icing degree of the outer wall of the isolation bin and facilitate the observation of the liquid level height displayed by the magnetic turning display mechanism 4.

In the-160 ℃ ultra-low temperature liquid level meter in the embodiment, the cold quantity released by the low-temperature medium is reduced through the cold insulation and water insulation sleeve, the water vapor is isolated, the working area of the magnetic turning display mechanism is isolated into a vacuum area by utilizing the isolation bin, so that the influence of water vapor freezing and frosting is reduced, the normal working state is ensured, and the lowest use temperature can reach-160 ℃.