CN209117613U - A kind of measuring device of low-boiling point liquid degree of supercooling - Google Patents
A kind of measuring device of low-boiling point liquid degree of supercooling Download PDFInfo
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- CN209117613U CN209117613U CN201821743927.4U CN201821743927U CN209117613U CN 209117613 U CN209117613 U CN 209117613U CN 201821743927 U CN201821743927 U CN 201821743927U CN 209117613 U CN209117613 U CN 209117613U
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- boiling point
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- point liquid
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Abstract
A kind of measuring device of low-boiling point liquid degree of supercooling, it is connect with fluid pipeline, low-boiling point liquid is full of in the fluid pipeline, it is characterized by: the measuring device includes equalizer valve, adopt warm pipe, adopt warm valve, differential pressure pick-up, adopt pressure valve, balanced valve and adopt pressure pipe, the differential pressure pick-up and balanced valve are parallel with one another and be connected to and described adopt warm valve and adopt between pressure valve, pressure pipe is adopted in the other end connection for adopting pressure valve, the nozzle for adopting pressure pipe protrudes into the fluid pipeline, the other end for adopting warm valve adopts the connection of equalizer valve described in Wen Guanyu by described, this is adopted warm pipe and is placed in the fluid pipeline and immerses in the low-boiling point liquid.The utility model can measure the degree of supercooling of the low-boiling point liquid in pipeline, foundation is provided to assess the vaporization risk of low-boiling point liquid in real time, have the advantages that structure is simple and convenient to operate, the live real-time measurement suitable for various low-boiling point liquid degrees of supercooling.
Description
Technical field
The utility model relates to the measuring devices of low-boiling point liquid, and in particular to a kind of survey of low-boiling point liquid degree of supercooling
Device is measured, field of measuring technique is belonged to.
Background technique
For being gaseous low-boiling point liquid, such as LNG, liquid nitrogen, liquid oxygen etc. under room temperature, in pipe conveying procedure due to
Outside heat is incoming, easily gasifies in pump intake etc., and causes cavitation erosion damage to the devices such as pipeline and pump, cause to pump into
Implication erosion.Therefore gasify in order to prevent, need the degree of supercooling to the medium in pipeline to measure, degree of supercooling is higher, table
Prescribed liquid actually is more not easy to gasify, so that it is guaranteed that low-boiling point liquid keeps enough degree of supercoolings.This degree of supercooling is in engineering
It is generally indicated with net positive pressure head (NPSH), i.e., the current actual pressure of liquid is higher than full under liquid current actual temperature corresponds to
With the degree of steam pressure.Therefore a kind of measuring device is needed to measure the liquid degree of supercooling in fluid pipeline.
Utility model content
The purpose of this utility model is that solving the problems, such as that cryogenic liquid pump inlet liquid degree of supercooling is tested, one is provided
The measuring device of kind low-boiling point liquid degree of supercooling, can measure the degree of supercooling of the low-boiling point liquid in pipeline, with
The assessment for the risk that cavitates to it provides foundation.
To achieve the above object, the technical solution of the utility model is as follows:
A kind of measuring device of low-boiling point liquid degree of supercooling, connect with fluid pipeline, and low boiling is full of in the fluid pipeline
Point liquid, it is characterised in that: the measuring device includes equalizer valve, adopts temperature pipe, adopt warm valve, differential pressure pick-up, adopt pressure valve, is flat
Weighing apparatus valve and adopt pressure pipe, the differential pressure pick-up and balanced valve it is parallel with one another and be connected to it is described adopt warm valve and adopt between pressure valve, institute
State adopt pressure valve the other end connection adopt pressure pipe, which protrudes into the fluid pipeline, described to adopt the another of warm valve
The connection of equalizer valve described in Wen Guanyu is adopted by described in end, this is adopted warm pipe and is placed in the fluid pipeline and immerses the low boiling point
In liquid.
Further, the warm control of adopting is made curved structure, to increase the contact for adopting Wen Guanyu low-boiling point liquid
Area.
Further, described to adopt Wen Guanwei helix tube.
Further, described to adopt pressure pipe and Cai Wen is managed and is sealed processing at tube wall by the fluid pipeline.
Further, the gas with tested low-boiling point liquid same substance adopted warm pipe the inside and fill certain pressure
State medium.
Compared with prior art, the utility model has the beneficial effects that
The measurement to the degree of supercooling of low-boiling point liquid in fluid pipeline is realized, for the gas of assessment low-boiling point liquid in real time
To change risk and provides foundation, the measuring device of the low-boiling point liquid degree of supercooling has the advantages that structure is simple and convenient to operate,
It can be used in the live real-time measurement of various low-boiling point liquid degrees of supercooling.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure,
1- equalizer valve, 2- adopt warm pipe, and 3- adopts warm valve, 4- differential pressure pick-up, and 5- adopts pressure valve, 6- balanced valve, and 7- adopts pressure pipe, T-
Fluid pipeline.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, but this cannot be limited with this
The protection scope of utility model.
Referring to Fig. 1, the measuring device of diagram low-boiling point liquid degree of supercooling is connect with fluid pipeline T, fluid pipeline T
It is inside full of and flows low-boiling point liquid.
The measuring device includes equalizer valve 1, adopts warm pipe 2, adopt warm valve 3, differential pressure pick-up 4, adopt pressure valve 5, balanced valve 6
With adopt pressure pipe 7.
It is described to adopt warm valve 3 and adopt between pressure valve 5 through the differential pressure pick-up 4 and the connection of balanced valve 6, the differential pressure pick-up
4 and balanced valve 6 it is parallel with one another.Pressure pipe 7 is adopted in the other end connection for adopting pressure valve 5, which protrudes into the liquid
In pipeline T.The other end for adopting warm valve 3 is adopted warm pipe 2 described in and is connect with the equalizer valve 1, this is adopted warm pipe 2 and is placed in institute
It states in fluid pipeline T and immerses in the low-boiling point liquid.Described adopts pressure pipe 7 and Cai Wen pipe 2 into the fluid pipeline T
Tube wall pass through place need be sealed processing.The warm pipe 2 of adopting is fabricated to curved structure, such as helix tube, is somebody's turn to do with increasing
Adopt the contact area of warm pipe 2 and low-boiling point liquid.It is described to adopt warm 2 low-boiling point liquid with measurement of the inside filled with certain pressure of pipe
The gaseous medium of same substance.
The utility model specific steps are as follows:
1) close balanced valve 6, open equalizer valve 1, adopt warm valve 3 and adopt pressure valve 5, be filled with from equalizer valve 1 it is a certain amount of with
The identical gas phase media of low-boiling point liquid ingredient to be measured, is then shut off equalizer valve 1.
2) when measuring, low-boiling point liquid proper flow in fluid pipeline T protrudes into the part of low-boiling point liquid wait adopt warm pipe 2
After being fully cooled, it can be read by differential pressure pick-up 4；If the pressure for adopting 5 side of pressure valve is higher than the pressure for adopting warm 3 side of valve,
Illustrate that low-boiling point liquid to be measured has certain degree of supercooling, i.e., net positive pressure head (NPSH) is positive, and the pressure for adopting 5 side of pressure valve, which is higher than, adopts
The pressure of warm 3 side of valve is more, then net positive pressure head is higher, and gasification risk is smaller.
Above-mentioned case study on implementation is not used to limit the scope of the utility model, and protection scope required by the utility model is not
It is only limitted to above-mentioned case study on implementation, also should include other to the obvious equivalent transformation of the utility model and alternative solution.
Claims (5)
1. a kind of measuring device of low-boiling point liquid degree of supercooling, connect with fluid pipeline, low boiling point is full of in the fluid pipeline
Liquid, it is characterised in that: the measuring device includes equalizer valve, adopts temperature pipe, adopt warm valve, differential pressure pick-up, adopt pressure valve, balance
Valve and adopt pressure pipe, the differential pressure pick-up and balanced valve it is parallel with one another and be connected to it is described adopt warm valve and adopt between pressure valve, it is described
Pressure pipe is adopted in the other end connection for adopting pressure valve, which protrudes into the fluid pipeline, the other end for adopting warm valve
The connection of equalizer valve described in Wen Guanyu is adopted by described, this is adopted warm pipe and is placed in the fluid pipeline and immerses the low boiling point liquid
In body.
2. the measuring device of low-boiling point liquid degree of supercooling according to claim 1, it is characterised in that: described adopts warm pipe
It is fabricated to curved structure, to increase the contact area for adopting Wen Guanyu low-boiling point liquid.
3. the measuring device of low-boiling point liquid degree of supercooling according to claim 2, it is characterised in that: described adopts warm pipe
For helix tube.
4. the measuring device of low-boiling point liquid degree of supercooling according to claim 1, it is characterised in that: described adopts pressure pipe
Processing is sealed at tube wall of the temperature pipe by the fluid pipeline with adopting.
5. the measuring device of low-boiling point liquid degree of supercooling according to claim 1, it is characterised in that: described adopts warm pipe
The inside fills the gaseous medium with tested low-boiling point liquid same substance of certain pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821743927.4U CN209117613U (en) | 2018-10-26 | 2018-10-26 | A kind of measuring device of low-boiling point liquid degree of supercooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821743927.4U CN209117613U (en) | 2018-10-26 | 2018-10-26 | A kind of measuring device of low-boiling point liquid degree of supercooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209117613U true CN209117613U (en) | 2019-07-16 |
Family
ID=67202363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821743927.4U Active CN209117613U (en) | 2018-10-26 | 2018-10-26 | A kind of measuring device of low-boiling point liquid degree of supercooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209117613U (en) |
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2018
- 2018-10-26 CN CN201821743927.4U patent/CN209117613U/en active Active
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