CN201344818Y - Device for measuring liquid levels of cryogenic vessel in weighing method - Google Patents
Device for measuring liquid levels of cryogenic vessel in weighing method Download PDFInfo
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- CN201344818Y CN201344818Y CNU2009200785213U CN200920078521U CN201344818Y CN 201344818 Y CN201344818 Y CN 201344818Y CN U2009200785213 U CNU2009200785213 U CN U2009200785213U CN 200920078521 U CN200920078521 U CN 200920078521U CN 201344818 Y CN201344818 Y CN 201344818Y
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Abstract
The utility model provides a device for measuring liquid levels of a cryogenic vessel in a weighing method. The device comprises the cryogenic vessel with a skirt surround, a weight measuring disk frame used for supporting the cryogenic vessel, and a digital display; and the weight measuring disk frame is formed by a pair of supporting disks, that is, an upper supporting disk and a lower supporting disk in a combination manner; a weighing sensor is fixed at the central part between the upper and the lower supporting disks; the supporting disks of the weight measuring disk frame are crisscross supporting disks with the weighing sensor equipped at the center, and end parts of four arms of the crisscross supporting disk adapt to the inner wall of the skirt surround; the four arms of the crisscross supporting disks are double beam arms, or two arms are double beam arms and the other two arms are three beam arms; a road wheel can be further arranged below a base plate; and a wheel framework capable of fixing the weight measuring disk frame can be placed on the base plate. The device has the advantages of simple structure, low manufacture cost and convenient operation, can accurately display changes of a liquid in the cryogenic vessel, correctly reads out the liquid wastage and liquid storage, measures the liquid height, and has an alarm function of limiting the highest and the lowest liquid levels.
Description
Technical field
The utility model relates to the liquid level emasuring device in a kind of low-temperature (low temperature) vessel.
Background technology
People often will use low-temperature (low temperature) vessel in producing, testing, and determine that the liquid level of liquid in the low-temperature (low temperature) vessel is the problem that people extremely pay close attention to, and are especially more deeply concerned to the liquid level of liquid in the airtight container.
The liquid level gauge majority that uses at present is float type level gauge, about position of liquid level in the demonstration low-temperature (low temperature) vessel that can only be rough.Because the liquid that initially pours in the low-temperature (low temperature) vessel can produce very strong air pressure and fierceness boiling, can make hanging up and down of liquid level gauge float draw circle to produce stubborn turning round, and cause this liquid level gauge not make any demonstration accurately liquid level.For the container that is installed in hectolitre or more volume liquid, the sign line display error of float can be more than several decaliters.
For commercially available differential pressure type liquid level meter, though can reflect the variation of liquid in container liquid level, complex structure need be from the courage perforate welding to container of inner bag broken hole welded tube, and this production requirement to container is too high.For example welding, leak detection, adiabatic implementation of processes etc. are all brought more difficulty, and this system is an out-and-out thermal source simultaneously, especially costs an arm and a leg, and is very limited in promoting the use of.
In sum, in producing, testing, people use above-mentioned liquid level gauge to feel inconvenience deeply.
Summary of the invention
Goal of the invention of the present utility model is: at using existing liquid level gauge in the problem of producing, existing in the experiment, for the user provides a kind of simple in structure, easy to operate, weight method low-temperature (low temperature) vessel liquid level emasuring device that can accurately demonstrate the vessel level position.
Goal of the invention of the present utility model realizes by implementing following technical proposals:
A kind of weight method low-temperature (low temperature) vessel liquid level emasuring device, comprise the low-temperature (low temperature) vessel, the digital indicator that have skirt and enclose, it is characterized in that: also include the check weighing plate rail that supports low-temperature (low temperature) vessel, this plate rail is combined by a pair of upper and lower supporting disk, and the centre between this upper and lower supporting disk is fixed with LOAD CELLS.
The check weighing plate rail of described low-temperature (low temperature) vessel, its upper and lower a pair of supporting disk is the cruciform supporting disk that there is the LOAD CELLS installing port in the centre, the end of cruciform four arms of And and this supporting disk is for to enclose the suitable circular arc termination of inwall with the container skirt;
The upper and lower a pair of supporting disk of described low-temperature (low temperature) vessel check weighing plate rail, its criss-cross four arms are the twin beams arm that the end has the circular arc termination;
The upper and lower a pair of supporting disk of described low-temperature (low temperature) vessel check weighing plate rail, its criss-cross four arms, the arm that two symmetric orientation are arranged is the twin beams arm, and the arm of two symmetric orientation is three beam arms in addition;
Described liquid level emasuring device also includes: have the wheel frame that Zhuan Fang And on road wheel, the base plate can fix described check weighing plate rail under the base plate;
The described wheel frame of putting the check weighing plate rail can be the wheel frame that the bottom has three horn rings or four horn rings or five horn rings;
Described digital indicator; for directly showing the volume of liquid in the low-temperature (low temperature) vessel and the digital instrument of liquid level; its primary structure has: amplify the amplifying circuit that LOAD CELLS obtains the electric signal of weighing; with the electrical signal conversion of weighing of amplifying become the to weigh A/D change-over circuit of digital signal; the processing digital signal of weighing is obtained liquid actual weight in the low-temperature (low temperature) vessel; automatically control FCASE memory parameters code; to obtain the liquid actual weight and the FCASE memory parameters relatively calculates; obtain liquid capacity and microprocessor controller MCU circuit highly in the low-temperature (low temperature) vessel; the display circuit that shows the interior liquid capacity of low-temperature (low temperature) vessel and highly all data; the FCASE memory circuit of memory parameters code; the parameter protection memory circuit that the supplemental characteristic that obtains is protected; power supply-lithium battery constant current constant voltage Gong Zuo And is the PWM controller and the charging circuit of its charging to the control display instrument, and is provided+Circuits System of 5V power supply for Displaying Meter work by the DC/DC booster circuit by lithium battery.
The principle of work of the utility model tank fill level measurement mechanism is as follows:
Owing on the check weighing plate rail of this device, LOAD CELLS is housed; LOAD CELLS was born low-temperature (low temperature) vessel weight P and the value of having a resistance R after unloaded low-temperature (low temperature) vessel was contained on the check weighing plate rail; after injecting liquid in the low-temperature (low temperature) vessel; the weighing load of LOAD CELLS is M; thereby the resistance value of this sensor changes; via metering circuit the signal that sensor resistance changes is converted into the differential electrical signals relevant with liquid weight; again after differential amplifier amplifies conversion; the A/D converter that enters embedded control system ARM inside is converted into corresponding digital weight data: volume change L=(M-P-N)/(M-P) * container capacity; control by microprocessor controller MCU: these data are handled and obtained liquid actual weight data in the low-temperature (low temperature) vessel; again with the FLASE internal storage code relatively calculate the capacity of liquid in the low-temperature (low temperature) vessel and height And with this data-storing in the memory of parameter protection, read by display module.
The utility model has the advantages that: apparatus structure is simple, make the variation that this one-tenths is lower, easy to operate, can accurately show the interior liquid of low-temperature (low temperature) vessel, read the waste of liquid, the storage of the interior liquid of low-temperature (low temperature) vessel accurately, the height And that provides liquid level has that qualification is the highest, the warning function of minimum liquid level, system's display precision can reach 0.1 liter, can be widely used in the level gauging of low-temperature (low temperature) vessels such as liquid nitrogen, liquid helium, liquefied natural gas (LNG).
Description of drawings
Fig. 1 is the utility model weight method low-temperature (low temperature) vessel liquid level emasuring device structural front view
Fig. 2 is the utility model liquid level emasuring device structural front view that is loaded on the wheel frame
The supporting disk vertical view of Fig. 3 for having single LOAD CELLS in the utility model check weighing plate rail
Fig. 4 is for having the supporting disk vertical view of two LOAD CELLS in the utility model check weighing plate rail
Fig. 5 is the utility model digital indicator circuit theory synoptic diagram
Fig. 6 is the wheel frame structure schematic top plan view that the utlity model has five horn rings
Fig. 7 is the road wheel synoptic diagram under the wheel frame
Mark among the figure: 1 is digital indicator, and 2 are lead-in wire, and 3 is low-temperature (low temperature) vessel, 4 is the liquid level scale, and 5 is the upper support dish, and 6 is LOAD CELLS, 7 is the lower support dish, and 8 for the low-temperature (low temperature) vessel skirt encloses, and 9 for bumping on the bolt top, 10 is wheel frame, and 11 is set bolt, and 12 is road wheel, 13 is the cruciform twin beams arm of supporting disk, 14 is the circular arc termination of the cruciform beam arm of supporting disk, and 15 is the LOAD CELLS installing port, and 16 is cruciform three beam arms of supporting disk.
Embodiment
The liquid level emasuring device of the fixed weight method low-temperature (low temperature) vessel of example 1:A type
As shown in Figure 1, this device encloses 8 low-temperature (low temperature) vessel 3, the check weighing plate rail of support low-temperature (low temperature) vessel 3 by having skirt, and digital indicator 1 is formed; Wherein: support the check weighing plate rail of low-temperature (low temperature) vessel 3, combined by a pair of upper and lower supporting disk (5,7), the centre between this upper and lower supporting disk (5,7) is fixed with single LOAD CELLS 6;
As shown in Figure 3, described upper and lower a pair of supporting disk (5,7), for there is the cruciform supporting disk of the installing port 15 of LOAD CELLS 6 in the centre, cruciform four arms of And and this supporting disk are to have the twin beams arm 13 that encloses the suitable circular arc termination 14 of 8 inwalls with the container skirt.
Described digital indicator 1; its primary structure has: the amplifying circuit that amplifies LOAD CELLS 6 electric signal of weighing that obtains; the electrical signal conversion of weighing that to amplify that is connected with this amplifying circuit becomes the A/D change-over circuit of the digital signal of weighing; respectively with the A/D change-over circuit; the FLASE memory circuit; supplemental characteristic protection memory circuit; the PWM controller circuitry; the microprocessor controller MCU circuit that display circuit connects; this MCU circuit digital signal processing of will weighing becomes in the low-temperature (low temperature) vessel in the liquid actual weight And and FLASE setting parameter relatively to calculate the capacity of liquid in the low-temperature (low temperature) vessel and highly; the supplemental characteristic that obtains is saved in the parameter protection memory; show by display module simultaneously; the lithium battery that working power is provided for display instrument by the DC/DC booster circuit for measuring instrument work provide+5V power supply ， And is a lithium cell charging by PWM controller and charging circuit thereof.
The liquid level emasuring device of the fixed weight method low-temperature (low temperature) vessel of example 2:B type
This routine apparatus structure and example 1 are basic identical, difference only is: as shown in Figure 4, upper and lower a pair of supporting disk (5 in this example, 7), its criss-cross four arms, the arm that two symmetric orientation are arranged is for to enclose the suitable twin beams arm 13 with circular arc termination 14 of 8 inwalls with the container skirt, and the arm of other two symmetric orientation is for to enclose suitable three beam arms 16 with circular arc termination of 8 inwalls with the container skirt; Two LOAD CELLS 6 are installed in the installing port 15 in upper and lower a pair of supporting disk (5,7) centre.
Example 3: the liquid level emasuring device A of portable weight method low-temperature (low temperature) vessel
As Fig. 2, shown in Figure 3, this device by have skirt enclose 8 low-temperature (low temperature) vessel 3, support low-temperature (low temperature) vessel 3 the check weighing plate rail, put wheel frame 10 and the digital indicator 1 that fixing check weighing plate rail has road wheel 12 and form; This routine apparatus structure and example 1 are basic identical, and difference only is: example 1 is not put the wheel frame 10 of fixing check weighing plate rail and is loaded on road wheel 12 on these wheel frame 10 base plates.
Example 4: the liquid level emasuring device B of portable weight method low-temperature (low temperature) vessel
As Fig. 2, shown in Figure 4, this device by have skirt enclose 8 low-temperature (low temperature) vessel 3, support low-temperature (low temperature) vessel 3 the check weighing plate rail, put wheel frame 10 and the digital indicator 1 that fixing check weighing plate rail has road wheel 12 and form; This routine apparatus structure and example 2 are basic identical, and difference only is: example 2 is not put the wheel frame 10 of fixing check weighing plate rail and is loaded on road wheel 12 on these wheel frame 10 base plates.
Wheel frame in the utility model as the wheel frame 10 in example 3 and the example 4, can be the wheel frame of three horn rings or four horn rings or five horn rings; Fig. 6 and Fig. 7 have provided wheel frame and the wheel frame bottom line travelling wheel synoptic diagram with five horn rings.
Claims (7)
1, a kind of weight method low-temperature (low temperature) vessel liquid level emasuring device, comprise the low-temperature (low temperature) vessel, the digital indicator that have skirt and enclose, it is characterized in that: also include the check weighing plate rail that supports low-temperature (low temperature) vessel, this plate rail is by a pair of upper and lower supporting disk (5,7) combine, centre between this upper and lower supporting disk (5,7) is fixed with LOAD CELLS (6).
2, according to the described weight method low-temperature (low temperature) vessel of claim 1 liquid level emasuring device, it is characterized in that: the check weighing plate rail of described low-temperature (low temperature) vessel, its upper and lower a pair of supporting disk (5,7) be provided with the cruciform supporting disk of LOAD CELLS installing port (15) for the centre; the end of cruciform four arms of And and this supporting disk (5,7) is for to enclose the suitable circular arc termination (14) of (8) inwall with the container skirt.
3, according to the described weight method low-temperature (low temperature) vessel of claim 2 liquid level emasuring device, it is characterized in that: the upper and lower a pair of supporting disk (5 of described low-temperature (low temperature) vessel check weighing plate rail, 7), its criss-cross four arms are the twin beams arm (13) that the end has circular arc termination (14).
4, according to the described weight method low-temperature (low temperature) vessel of claim 2 liquid level emasuring device, it is characterized in that: the upper and lower a pair of supporting disk (5 of described low-temperature (low temperature) vessel check weighing plate rail, 7), its criss-cross four arms, the arm that two symmetric orientation are arranged is twin beams arm (13), and the arm of two symmetric orientation is three beam arms (16) in addition.
5, according to the described weight method low-temperature (low temperature) vessel of one of claim 1-4 liquid level emasuring device, it is characterized in that: described liquid level emasuring device also includes: have the wheel frame (10) that Zhuan Fang And on road wheel (12), the base plate can fix described check weighing plate rail under the base plate.
6, according to the described weight method low-temperature (low temperature) vessel of claim 5 liquid level emasuring device, it is characterized in that: the described wheel frame (10) of putting the check weighing plate rail can be the wheel frame that the bottom has three horn rings or four horn rings or five horn rings.
7; according to the described weight method low-temperature (low temperature) vessel of claim 1 liquid level emasuring device; it is characterized in that: described digital indicator; mainly comprise: the differential amplifier circuit that the electric signal of weighing is amplified; the A/D change-over circuit that is connected with this amplifying circuit; respectively with the A/D change-over circuit; the FLASE memory circuit; supplemental characteristic protection memory circuit; the PWM controller circuitry; the microprocessor controller MCU circuit that display circuit connects; for Displaying Meter provides+lithium battery and the DC/DC booster circuit of 5V working power, and be the PWM controller and the charging circuit thereof of lithium cell charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200785213U CN201344818Y (en) | 2009-01-07 | 2009-01-07 | Device for measuring liquid levels of cryogenic vessel in weighing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200785213U CN201344818Y (en) | 2009-01-07 | 2009-01-07 | Device for measuring liquid levels of cryogenic vessel in weighing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344818Y true CN201344818Y (en) | 2009-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200785213U Expired - Fee Related CN201344818Y (en) | 2009-01-07 | 2009-01-07 | Device for measuring liquid levels of cryogenic vessel in weighing method |
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| CN (1) | CN201344818Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104067065A (en) * | 2011-04-05 | 2014-09-24 | 盖伊·高南 | Water level measurement device using load cell |
| CN104191176A (en) * | 2014-08-25 | 2014-12-10 | 沈阳航天新光集团有限公司 | Method for manufacturing low-temperature flow weighing container |
| CN104386384A (en) * | 2014-11-06 | 2015-03-04 | 北京航天试验技术研究所 | Low-temperature vessel with weighable inner container |
| CN107388042A (en) * | 2017-08-14 | 2017-11-24 | 上海航天设备制造总厂 | Liquid nitrogen sustainable supply device and method for ultralow temperature cutting |
| CN110514267A (en) * | 2019-08-08 | 2019-11-29 | 大连理工大学 | A kind of rocket body tank level monitoring method |
| CN110646051A (en) * | 2019-11-06 | 2020-01-03 | 杭州市第三人民医院 | Measuring container and measuring device |
| CN114705265A (en) * | 2021-07-09 | 2022-07-05 | 长春汇维科技股份有限公司 | Irregular container measuring method and equipment |
-
2009
- 2009-01-07 CN CNU2009200785213U patent/CN201344818Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104067065A (en) * | 2011-04-05 | 2014-09-24 | 盖伊·高南 | Water level measurement device using load cell |
| CN104191176A (en) * | 2014-08-25 | 2014-12-10 | 沈阳航天新光集团有限公司 | Method for manufacturing low-temperature flow weighing container |
| CN104386384A (en) * | 2014-11-06 | 2015-03-04 | 北京航天试验技术研究所 | Low-temperature vessel with weighable inner container |
| CN107388042A (en) * | 2017-08-14 | 2017-11-24 | 上海航天设备制造总厂 | Liquid nitrogen sustainable supply device and method for ultralow temperature cutting |
| CN107388042B (en) * | 2017-08-14 | 2020-05-12 | 上海航天设备制造总厂 | Liquid nitrogen continuous supply device and method for ultralow temperature cutting |
| CN110514267A (en) * | 2019-08-08 | 2019-11-29 | 大连理工大学 | A kind of rocket body tank level monitoring method |
| CN110646051A (en) * | 2019-11-06 | 2020-01-03 | 杭州市第三人民医院 | Measuring container and measuring device |
| CN114705265A (en) * | 2021-07-09 | 2022-07-05 | 长春汇维科技股份有限公司 | Irregular container measuring method and equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20120107 |