CN208818306U - A kind of low boiling point liquid level gauge - Google Patents
A kind of low boiling point liquid level gauge Download PDFInfo
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- CN208818306U CN208818306U CN201821209922.3U CN201821209922U CN208818306U CN 208818306 U CN208818306 U CN 208818306U CN 201821209922 U CN201821209922 U CN 201821209922U CN 208818306 U CN208818306 U CN 208818306U
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- tube
- float
- limiting tube
- liquid level
- outer tube
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Abstract
The utility model discloses a kind of low boiling point liquid level gauges, position-limiting tube is set in outer tube, and it is interlinked to the outside in position-limiting tube, position-limiting tube makes float move up and down, outer tube is connect by liquid channel with liquid, gas is discharged by gas phase channel, due to having outlet gap between the outer wall of position-limiting tube and the inner wall of outer tube, the gas that liquid gasification and volatilization process generate is discharged by the outlet gap between the outer wall of position-limiting tube and the inner wall of outer tube, it is interlinked to the outside in the tube wall of position-limiting tube, the gas of accumulation will not be formed in the lower section of float, prevent gas push float, moving up and down for float is only driven by liquid, hopping phenomenon can occur to avoid float, accurately reflect liquid level position；The magnetic column indicator and float being arranged on outer tube outer wall realize that magnetic coupling shows liquid level.
Description
Technical field
The utility model relates to technical field of liquid level measurement, further relate to a kind of low boiling point liquid level gauge.
Background technique
Liquefied ammonia, also known as anhydrous ammonia are a kind of colourless liquids, are a kind of important industrial chemicals, have corrosivity, and hold
It is volatile.In the industrial production, it in order to monitor the reserves situation of liquefied ammonia, needs using liquidometer, the boiling point of liquefied ammonia is -33.4
DEG C, vapour pressure can be applied to common liquid measure up to 882kPa, traditional liquidometer, the characteristic of liquefied ammonia is not fully considered,
Therefore in use frequent occurrence jump, lattice phenomena such as, be particularly acute under summer high temperature environment, can not accurately detect liquid
Position has biggish security risk.
Traditional liquidometer detects liquid level position using the principle of buoyancy, and float is with liquid level synchronization lifting；As shown in Figure 1A,
For the structure chart of single-cylinder type liquidometer in the prior art, a float 02 is placed in monotubular 01, the upper end of monotubular 01 connects gas
Xiang Guan, lower end connect liquid-phase tube；Assuming that liquid level, in location A, liquefied ammonia evaporation generates a large amount of gas, and gas can not by float blocking
Discharge, built up below in float, gas pressure buildup to it is sufficiently large when push up float, until float higher than gas phase pipe height,
When reaching B, gas is discharged from gas phase pipe, and the air pressure below float reduces, and float is quickly fallen after rise, and float jumps, can not
Reflect true level condition.
Figure 1B is the structure chart of double-cylinder type liquidometer in the prior art, a float 02 is placed in inner tube 01, in inner tube
An outer tube 03 is set with except 01, gas phase pipe and liquid-phase tube pass through outer tube 03 and are connected with inner tube, and it is similar with monotubular measuring principle, outside
Pipe plays heat-insulated effect, avoids inner tube directly and contacting external air, reduces influence of the ambient temperature to inner tube, but still
There are problems that float position mutation bounce.
For those skilled in the art, how float to be avoided to jump, keeps level gauging accurate, be to need at present
Technical problems to be solved.
Utility model content
The utility model provides a kind of low boiling point liquid level gauge, can avoid float and jumps, accurately measure liquid level, has
Body scheme is as follows:
A kind of low boiling point liquid level gauge, comprising:
Outer tube, upper part connection setting gas phase channel；The bottom connection setting liquid channel of the outer tube；
Position-limiting tube is set in the outer tube, has outlet between the outer wall of the position-limiting tube and the inner wall of the outer tube
Gap；The outlet for being connected to the limit tube cavity and the outer tube bore is opened up on the side wall of the position-limiting tube along its length
Mouthful；
Float is installed in the position-limiting tube, and the position-limiting tube limits the lateral position of the float, is oriented to the float
It moves up and down；
Magnetic column indicator is installed on the outer wall of the outer tube, can realize magnetic coupling with the float.
Optionally, the gas outlet is the strip through slot opened up along axial direction, and the gas outlet is logical towards the gas phase
Road.
Optionally, the angle of the both ends of the gas outlet cross section and the position-limiting tube line of centres is 45 degree.
Optionally, the lower part of the position-limiting tube is in the tubular of all round closure；The liquid channel passes through the pipe of the outer tube
Wall is connected to the bottom sidewall of the position-limiting tube.
Optionally, the position-limiting tube is offset in the outer tube, and the position-limiting tube is where the magnetic column indicator
Side.
It optionally, further include the evacuated tube for being connected to the outer tube top, setting is used for control piper in the evacuated tube
The exhaust-valve of on-off.
Optionally, the bottom end of the outer tube and the bottom end of position-limiting tube are fixed on ring flange, and the position-limiting tube is to positive connection
Sewage pipe installs blowdown valve on the sewage pipe.
Optionally, gas phase valve is set on the gas phase channel, liquid phase valve is set on the liquid channel.
The utility model provides a kind of low boiling point liquid level gauge, is arranged position-limiting tube in outer tube, and position-limiting tube
Inside it is interlinked to the outside, position-limiting tube limits float position, makees float vertically movable up and down, and outer tube is connect by liquid channel with liquid,
By gas phase channel be discharged gas, due between the outer wall of position-limiting tube and the inner wall of outer tube have outlet gap, liquid gasification and
The gas that volatilization process generates is discharged by the outlet gap between the outer wall of position-limiting tube and the inner wall of outer tube, the tube wall of position-limiting tube
It is inside interlinked to the outside, the gas of accumulation will not be formed in the lower section of float, prevent gas push float, float moves up and down only by liquid
Body drives, and hopping phenomenon can occur to avoid float, accurately reflect liquid level position；The magnetic column instruction being arranged on outer tube outer wall
Device and float realize that magnetic coupling shows liquid level.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Figure 1A is the structure chart of single-cylinder type liquidometer in the prior art；
Figure 1B is the structure chart of double-cylinder type liquidometer in the prior art；
Fig. 2 is a kind of structure chart of embodiment of low boiling point liquid level gauge provided by the utility model；
Fig. 3 A is the front view of position-limiting tube；
Fig. 3 B is the side view of position-limiting tube；
Fig. 3 C is the cross-sectional view of position-limiting tube；
Fig. 4 is the structure chart of the utility model low boiling point liquid level gauge another kind embodiment.
Include: in figure
Outer tube 1, gas phase channel 11, liquid channel 12, position-limiting tube 2, gas outlet 21, float 3, magnetic column indicator 4, emptying
Pipe 5, ring flange 6, sewage pipe 7.
Specific embodiment
The core of the utility model is to provide a kind of low boiling point liquid level gauge, can avoid float and jump, accurately
Measure liquid level.
In order to make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with attached drawing and
Explanation is described in detail to the low boiling point liquid level gauge of the utility model in specific embodiment.
As shown in Fig. 2, being a kind of structure chart of embodiment of low boiling point liquid level gauge provided by the utility model；This is practical
Novel low boiling point liquid level gauge includes the structures such as outer tube 1, position-limiting tube 2, float 3, magnetic column indicator 4, and outer tube 1 is an envelope
The tubular structure closed, internal and extraneous opposing seal, in the top of outer tube 1 connection setting gas phase channel 11, gas phase channel 11
It can be connected to the atomisation station of fluid reservoir, collect the gas that vaporization and volatilization generate.The bottom connection setting liquid channel of outer tube 1
12, liquid can be entered in outer tube 1 by liquid channel 12, and liquid level of the liquid in fluid reservoir is anti-by the liquid level in outer tube 1
It reflects.
Position-limiting tube 2 is set in outer tube 1, and the size of position-limiting tube 2 is less than outer tube, and position-limiting tube 2 and outer tube 1 are in vertically to set
It sets, there is outlet gap between the outer wall of position-limiting tube 2 and the inner wall of outer tube 1, in general, the caliber of outer tube 1 should be limit
Twice of 2 caliber of pipe, specific size is determines according to actual conditions；Connection limit is opened up on the side wall of position-limiting tube 2 along its length
The gas outlet 21 of 1 inner cavity of 2 inner cavity of pipe and outer tube, gas outlet 21 make the interior of position-limiting tube 2 be interlinked to the outside, and liquid is inside and outside position-limiting tube 2
It flows freely.
Float 3 is installed in position-limiting tube 2, and the diameter of float 3 is slightly less than the inner wall size of position-limiting tube 2, and position-limiting tube 2 presss from both sides just
Float 3 is filled, the lateral position of float 3 is limited by position-limiting tube 2, limit and guiding float 3 are only capable of vertically moving in above-below direction
It is dynamic.
Magnetic column indicator 4 is installed on the outer wall of outer tube 1, can realize magnetic coupling with float 3；When the liquid in fluid reservoir
When face is gone up and down, the liquid level in outer tube 1 is gone up and down therewith, and with the liquid level synchronization lifting of outer tube 1, the magnet steel in float 3 passes through float 3
Magnetic coupling is transmitted to magnetic column indicator 4, drives red, white turned column to overturn 180 degree, turned column becomes red from white when liquid level rises
Color, when liquid level decline, turned column becomes white from red, and the red white intersection of indicator is the actual height of container inside liquid level.
The utility model middle external tube 1 is connect by liquid channel 11 with liquid, and gas is discharged by gas phase channel 12, due to
There is outlet gap, the gas that liquid gasification and volatilization process generate is by limit between the outer wall of position-limiting tube 2 and the inner wall of outer tube 1
Outlet gap between the outer wall of position pipe 2 and the inner wall of outer tube 1, and eventually pass through gas phase channel 11 and be discharged to except outer tube；Limit
It is interlinked to the outside in the tube wall of pipe 2, gas is preferentially discharged from outlet gap, will not form the gas of accumulation in the lower section of float 3, prevent
Gas push float, moving up and down for float 3 are only driven by liquid, hopping phenomenon can be occurred to avoid float, accurately be reflected
Liquid level position.
Rapid decrease after gas discharge in traditional structure below float, float quickly fall to liquid phase region, teletransmission picture
Face hopping phenomenon, due to excessive velocities of falling, part magnetic column fails to sense magnetic force, and it is existing that magnetic column indicator forms lattice
As.Moving up and down for float 3 is only driven by liquid in the utility model, and the liquid level speed that floats up and down is slower, because without
Lattice phenomenon.
On the basis of above scheme, the gas outlet 21 in the utility model is the strip through slot opened up along axial direction,
It as shown in Figure 3A, is the front view of position-limiting tube 2, Fig. 3 B is the side view of position-limiting tube 2；Gas outlet 21 needs that gas quickly is discharged,
It avoids building up below in float, the opening for being set as a strip can effectively promote deflation rate；Shown in illustrations
Structure an opening is quite cut on round tube, a gas outlet 21 is only set, and gas outlet 21 is towards gas phase channel
11, gas flows directly into gas phase channel 11.Certainly, position-limiting tube 2 can also be surrounded by split type column, the top and bottom of column
It is fixed to each other and is integrated, the gap between column is gas outlet, at least one gas outlet face gas phase channel 11.
It as shown in Figure 3 C, is the cross-sectional view of position-limiting tube 2；The both ends of 21 cross section of gas outlet and 2 line of centres of position-limiting tube
Angle be 45 degree, if only be arranged a gas outlet, the cross section of the entity part of position-limiting tube 2 should be major arc.
Preferably, in the tubular of all round closure, the part for opening up gas outlet 21 is answered for the lower part of position-limiting tube 2 in the utility model
For the overwhelming majority of 2 top of position-limiting tube, notch only is not provided in the lesser altitude range in lower section；Liquid channel 12 passes through outer tube
When 1 tube wall is connected to the bottom sidewall of position-limiting tube 2 namely liquid enters outer tube 1 from liquid channel 12, it is introduced into position-limiting tube
2 bottom end, then flow up and enter in outer tube 1 from gas outlet 21, liquid is filled in outer tube 1 and position-limiting tube 2 simultaneously.Liquid
It is in lateral flow when into position-limiting tube 2, the liquid flowed into from fluid reservoir is included in the bottom that impurity is deposited on position-limiting tube 2, subtracts
The small impurity content into outer tube 1.
Preferably, the position-limiting tube 2 in the utility model is offset in outer tube 1 namely position-limiting tube 2 is apart from 1 circumferential direction of outer tube
Distance is simultaneously unequal, as shown in Fig. 2, the spacing in left side is minimum, general minimum spacing is not more than 2mm, and the spacing on right side is maximum, limit
Position pipe 2 is also disposed at left side close to the side at 4 place of magnetic column indicator namely magnetic column indicator 4, is located at apart from position-limiting tube
2 nearest positions, the induction that magnetic column indicator 4 can farthest by 3 magnetic force of float.Preferably, position-limiting tube 2 and outer tube
1 diameter should differ one times or more.
On the basis of above scheme, the utility model further includes the evacuated tube 5 for being connected to 1 top of outer tube, such as Fig. 4 institute
Show, is the structure chart of the utility model low boiling point liquid level gauge another kind embodiment；Evacuated tube 5 as shown in the figure is connected to outer tube
1 top, setting is used for the exhaust-valve of control piper on-off in evacuated tube 5, gas on-off is controlled by exhaust-valve, normal
Exhaust-valve remains turned-off when detection.
Preferably, the bottom end of the utility model middle external tube 1 and the bottom end of position-limiting tube 2 are fixed on ring flange 6, position-limiting tube 2
To positive connection sewage pipe 6, position-limiting tube 2 and sewage pipe 6 can be a complete pipeline, can also split settings, the two passes through flange
Disk 6 is connected to；Blowdown valve, blowdown valve control of sewage disposal pipe 6 and extraneous on-off are installed on sewage pipe 6.
Gas phase valve is set on gas phase channel 11, controls the on-off of gas phase channel 11；Liquid phase valve is set on liquid channel 12
Door controls the on-off of liquid channel 12.
When needing to detect liquidometer, the liquid phase valve on gas phase valve and liquid channel 12 on gas phase channel 11 is first closed
Door, is isolated it with fluid reservoir, and the other end of blowdown valve connects collection vessel, collects remaining liquid in position-limiting tube 2 and outer tube 1
Body；Evacuated tube 5 is connected to inert gas source, is passed through inert gas into outer tube 1, the remaining volatilization in by outer tube 1 and position-limiting tube 2
Gas is discharged from sewage pipe 6；It can start Measuring error after gas discharge.
When maintenance completes to restart measurement, first passes through evacuated tube 5 and be filled with inert gas into outer tube 1, it will be in outer tube 1
Oxygen is discharged from sewage pipe 6, and oxygen is avoided to react with volatilization gas, closes blowdown valve and exhaust-valve after the completion, and open gas
Phase valve and liquid phase valve can restart to measure.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice, can realize in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (8)
1. a kind of low boiling point liquid level gauge characterized by comprising
Outer tube (1), upper part connection setting gas phase channel (11)；Bottom connection setting liquid channel (12) of the outer tube (1)；
Position-limiting tube (2) is set in the outer tube (1), between the outer wall of the position-limiting tube (2) and the inner wall of the outer tube (1)
With outlet gap；Connection position-limiting tube (2) inner cavity and described outer is opened up on the side wall of the position-limiting tube (2) along its length
Manage the gas outlet (21) of (1) inner cavity；
Float (3) is installed in the position-limiting tube (2), and the position-limiting tube (2) limits the lateral position of the float (3), guiding
The float (3) moves up and down；
Magnetic column indicator (4), is installed on the outer wall of the outer tube (1), can realize magnetic coupling with the float (3).
2. low boiling point liquid level gauge according to claim 1, which is characterized in that the gas outlet (21) is to open along axial direction
If strip through slot, the gas outlet (21) is towards the gas phase channel (11).
3. low boiling point liquid level gauge according to claim 2, which is characterized in that the two of gas outlet (21) cross section
End and the angle of the position-limiting tube (2) line of centres are 45 degree.
4. low boiling point liquid level gauge according to claim 2, which is characterized in that the lower part of the position-limiting tube (2) is in four
All closed tubulars；The liquid channel (12) passes through the tube wall of the outer tube (1) and the bottom sidewall of the position-limiting tube (2) connects
It is logical.
5. low boiling point liquid level gauge according to claim 4, which is characterized in that the position-limiting tube (2) is offset to described
In outer tube (1), the position-limiting tube (2) is close to the side where the magnetic column indicator (4).
6. low boiling point liquid level gauge according to any one of claims 1 to 5, which is characterized in that further include being connected to institute
The evacuated tube (5) on outer tube (1) top is stated, setting is used for the exhaust-valve of control piper on-off on the evacuated tube (5).
7. low boiling point liquid level gauge according to claim 6, which is characterized in that the bottom end of the outer tube (1) and limit
The bottom end of pipe (2) is fixed on ring flange (6), and the position-limiting tube (2) is connected to sewage pipe (7) to positive, is pacified on the sewage pipe (7)
Fill blowdown valve.
8. low boiling point liquid level gauge according to claim 6, which is characterized in that gas is arranged on the gas phase channel (11)
Liquid phase valve is arranged on the liquid channel (12) for phase valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821209922.3U CN208818306U (en) | 2018-07-27 | 2018-07-27 | A kind of low boiling point liquid level gauge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821209922.3U CN208818306U (en) | 2018-07-27 | 2018-07-27 | A kind of low boiling point liquid level gauge |
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| Publication Number | Publication Date |
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| CN208818306U true CN208818306U (en) | 2019-05-03 |
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| CN201821209922.3U Active CN208818306U (en) | 2018-07-27 | 2018-07-27 | A kind of low boiling point liquid level gauge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811607A (en) * | 2020-07-13 | 2020-10-23 | 朱沛灵 | Irregular tank volume measuring system and method |
-
2018
- 2018-07-27 CN CN201821209922.3U patent/CN208818306U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811607A (en) * | 2020-07-13 | 2020-10-23 | 朱沛灵 | Irregular tank volume measuring system and method |
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