CN202339219U - Underground cave depot liquid level measurement device - Google Patents
Underground cave depot liquid level measurement device Download PDFInfo
- Publication number
- CN202339219U CN202339219U CN2011204898468U CN201120489846U CN202339219U CN 202339219 U CN202339219 U CN 202339219U CN 2011204898468 U CN2011204898468 U CN 2011204898468U CN 201120489846 U CN201120489846 U CN 201120489846U CN 202339219 U CN202339219 U CN 202339219U
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- CN
- China
- Prior art keywords
- liquid level
- air blowing
- measurement module
- underground cavern
- emasuring device
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Abstract
The utility model belongs to the technical field of liquid level measurement, in particular relates to an underground cave depot liquid level measurement device which comprises a blowing measurement module and a blowing tube module which are connected through a joint part, wherein the blowing measurement module comprises a first stop valve, a filter pressure reducer, a constant-flow control valve, a metal rotameter, a first pressure transmitter, a second pressure transmitter, a locally differential pressure gauge, a second stop valve and a third stop valve; and all components are connected through a first stainless steel connecting tube and a second stainless steel connecting tube and by using a cutting sleeve male connector. The underground cave depot liquid level measurement device has the advantages of energy saving, convenience in installation and maintenance, little maintenance quantity, long service life, high liquid level measurement accuracy, low cost and compact structure.
Description
Technical field
The utility model belongs to the level gauging technical field, specifically, relates to a kind of underground cavern liquid level emasuring device.
Background technology
Oil is as important chemical material and strategic materials, is to use the most extensively in the world, transportation, stores one of energy of most convenient.At present, the main developed country in the world has all set up fairly perfect national strategic oil reserve system.China is as the second-biggest-in-the-world crude oil country of consumption and the crude oil import state that are only second to the U.S.; Building national strategic oil reserve base as early as possible; Improve national strategic oil reserve system, to safeguarding national security and economic sustained and rapid development is extremely important.Underground cavern than the ground oil depot have safe, occupy cultivated land less, advantage such as reduced investment, pollution are little, long service life.At present, China is carrying out the construction of many underground caverns.For guaranteeing the steady safe operation of underground cavern, need monitor in real time the medium liquid level of underground cave depot stored.The underground cavern buried depth does not wait from tens meters to rice up to a hundred, and facility is a permanent installation in the hole, can not keep in repair and change, and measurement brings very big difficulty to liquid level.The differential pressure fluid level transmitter can't pressure and installation; Radar level gauge is owing to the restriction of radar wave power, and maximum measurement range has only about 30 meters; Called putting-into-type liquid level meter is owing to the restriction of leading cable length also can't be used.At present, the method for both at home and abroad underground cave depot being carried out level gauging mainly contains two kinds: the one, the capacitance type liquid level switch is installed in underground cavern; The 2nd, adopt the servo liquid meter.But all there is certain shortcoming in above-mentioned two kinds of methods.The capacitance type liquid level switch need be in underground cavern cabling and cable protecting sleeve and its sealing had higher requirement; Simultaneously; Level switch can only selectively be measured underground cave depot liquid level point, makes the underground cavern level gauging have very big blind area, in addition; When level switch breaks down, can't keep in repair and change.Though and the servo liquid meter can carry out continuous coverage to underground cave depot liquid level, but, be required to be liquid level gauge larger-diameter stainless steel guide pipe is installed, and the installation of guide pipe and verticality requirement are the biggest problem in the work progress for guaranteeing servo liquid meter operate as normal.Need a kind of underground cavern liquid level emasuring device that can address the above problem for this reason, satisfy the needs of actual conditions with this.
The utility model content
The utility model provides a kind of underground cavern liquid level emasuring device, its objective is to overcome the shortcoming that existing level gauging instrument exists in the underground cavern level gauging, makes it have precision height, good stability, convenient for installation and maintenance and advantage that can permanent use; It adopts modular design, and the method for utilize blowing is surveyed the liquid level principle through differential pressure and carried out the underground cavern level gauging, simultaneously the pressure point is moved to ground and is convenient to pressure survey, its measurement result can with the mutual verification of other fluid level measuring instrument epiphase.
The technical scheme that the utility model adopted is:
The underground cavern liquid level emasuring device comprises the air blowing measurement module and the gas blow pipe module that are connected through adapter piece.
In the technical scheme of the utility model, also have following additional technical feature:
Said air blowing measurement module comprises first stop valve, filtering pressure reducer, constant flow control valve, metallic rotator flowmeter, first pressure unit, second pressure unit, differential pressure gauge, second stop valve and the 3rd stop valve on the spot, between said parts through the first stainless steel connecting pipe and the second stainless steel connecting pipe and utilize the clip-sleeve external-thread joint to be connected.
Said gas blow pipe module comprises gas blow pipe.
Said gas blow pipe is the stainless steel jointless thickened steel-tube.
The exit of said gas blow pipe is welded with stainless steel jointless concentric reducer and the outlet of formation " V " font.
Said air blowing measurement module is arranged in the air blowing measurement module guard box.
The both sides of said air blowing measurement module guard box are connected with measurement line with source gas line through the straight-through BULKHEAD UNION of first bite type, the straight-through BULKHEAD UNION of second bite type and the straight-through BULKHEAD UNION of the 3rd bite type, and the bottom of said air blowing measurement module guard box is provided with electric interfaces.
Said air blowing measurement module guard box is provided with glass vision panel.
Said air blowing measurement module guard box is provided with air blowing measurement module guard box door lock.
Said adapter piece is the cutting ferrule joint.
Compared with prior art, the advantage and the good effect of the utility model are: the underground cavern liquid level emasuring device of the utility model, and its 0.6MPa nitrogen that adopts underground cavern nitrogen envelope usefulness need not to be provided with the supercharging facility as power source and air blowing source of the gas; Simultaneously, nitrogen plays the effect of nitrogen envelope again after getting into underground cavern, makes the level gauging process not increase any energy consumption, has the advantage of energy saving economy; It is provided with pressure point on the ground, is convenient to the installation and maintenance of pressure unit; It uses stability of flow in the constant flow control valve control survey pipe, and flow in the metallic rotator flow measurement buret is set, and prevents that flow from occurring having the precision height, the advantage of good stability than great fluctuation process; It has only gas blow pipe to contact with the medium of underground cavern storage, as long as select suitable gas blow pipe, improves the gas blow pipe corrosion resistance, just can guarantee the permanent use of the utility model; On-the-spot only the need fixed air blowing measurement module guard box, is connected with source gas line and measurement line through the straight-through threading joint connector of bite type, can come into operation, and has compact conformation and advantage convenient for installation and maintenance.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Fig. 1 is its level gauging principle schematic of underground cavern liquid level emasuring device of the utility model;
Fig. 2 is its air blowing measurement module mounting structure synoptic diagram of underground cavern liquid level emasuring device of the utility model;
Fig. 3 is its air blowing measurement module guard box front elevation of underground cavern liquid level emasuring device of the utility model;
Fig. 4 is its gas blow pipe structural representation of underground cavern liquid level emasuring device of the utility model.
Among the figure, 1 is ground, and 2 for installing vertical shaft, and 3 is underground cavern, and 4 is nitrogen header pipe; 5 is direct-operated regulator, and 6 are underground cavern benefit nitrogen pipeline, and 7 is the nitrogen arm, and 8 is gas blow pipe, and 9 are the air blowing measurement module; 10 is first stop valve, and 11 is filtering pressure reducer, and 12 is constant flow control valve, and 13 is the metallic rotator flowmeter; 14 is first pressure unit, and 15 is second pressure unit, and 16 are differential pressure gauge on the spot, and 17 is the first stainless steel connecting pipe; 18 is second stop valve, and 19 is the second stainless steel connecting pipe, and 20 is the 3rd stop valve, and 21 are air blowing measurement module guard box; 22 is glass vision panel, and 23 is the straight-through threading joint connector of first bite type, and 24 is the straight-through threading joint connector of second bite type, and 25 is the straight-through threading joint connector of the 3rd bite type; 26 is electric interfaces, and 27 are air blowing measurement module guard box door lock, and 28 is the stainless steel nameplate, and 29 is the stainless steel jointless concentric reducer.
Embodiment
Embodiment
To shown in Figure 4, the underground cavern liquid level emasuring device comprises the air blowing measurement module 9 and gas blow pipe module that are connected through adapter piece like Fig. 1; Said air blowing measurement module 9 comprises first stop valve 10, filtering pressure reducer 11, constant flow control valve 12, metallic rotator flowmeter 13, first pressure unit 14, second pressure unit 15, differential pressure gauge 16, second stop valve 18 and the 3rd stop valve 20 on the spot, between said parts through the first stainless steel connecting pipe 17 and the second stainless steel connecting pipe 19 and utilize the clip-sleeve external-thread joint to be connected; Said gas blow pipe module comprises gas blow pipe 8; Said gas blow pipe 8 is the stainless steel jointless thickened steel-tube; The exit of said gas blow pipe 8 is welded with stainless steel jointless concentric reducer 29 and forms the outlet of " V " font; Said air blowing measurement module 9 is arranged in the air blowing measurement module guard box 21; The both sides of said air blowing measurement module guard box 21 are connected with measurement line with source gas line through the straight-through BULKHEAD UNION 23 of first bite type, the straight-through BULKHEAD UNION 24 of second bite type and the straight-through BULKHEAD UNION 25 of the 3rd bite type, and the bottom of said air blowing measurement module guard box 21 is provided with electric interfaces 26; Said air blowing measurement module guard box 21 is provided with glass vision panel 22; Said air blowing measurement module guard box 21 is provided with air blowing measurement module guard box door lock 27; Said adapter piece is the cutting ferrule joint.
Like this in when work, the underground cavern liquid level emasuring device of the utility model, on-the-spot accomplish install after, close second stop valve 18 earlier, open first stop valve 10,20 pairs of gas blow pipes 8 of the 3rd stop valve purge; After purging finishes; Close the 3rd stop valve 20, open second stop valve 18,0.6MPa nitrogen is through filtering decompressor 11 filtration, purifications; And be decompressed to 0.4MPa; Set a steady flow value for constant flow control valve 12, nitrogen is blown in the liquid phase medium of underground cavern 3 with the flow of 20L/h, the pressure signal that first pressure unit 14 and second pressure unit 15 are measured is transferred to the liquid level that control system calculates underground cavern 3 through electric interfaces 26; Concrete computing formula is:
P
0=ρ
1GH
1+ P
1(formula 1)
This underground cave depot liquid level emasuring device moves to pressure measurement point on the ground, because underground cavern 3 has bigger buried depth, should nitrogen static pressure in the measuring tube be introduced and calculate to reduce measuring error, and computing formula is:
P
0=P
2-ρ
2G (H
1+ H
2) (formula 2)
P
1=P
3-ρ
2GH
2(formula 3)
Formula 2, formula 3 substitution formulas 1 are got:
In the following formula: P
0Be gas blow pipe 8 outlet pressure;
P
1Be underground cavern 3 gaseous pressures;
P
2Be first pressure unit, 14 measured values;
P
3Be second pressure unit, 15 measured values;
ρ
1Be underground cavern 3 liquid phase medium density;
ρ
2Be density of nitrogen.
Simultaneously, 16 pairs of differential pressure value of differential pressure gauge are indicated on the spot on the spot; Metallic rotator flowmeter 13 is monitored the regulating effect of constant flow control valve 12 through measuring nitrogen flow in real time, and its signal is transferred to control system through electric interfaces 26, when flow occurs than great fluctuation process, carries out alarm; And said air blowing measurement module guard box 21 fronts are provided with glass vision panel 22, are convenient to the field staff and check.
Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the embodiment of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here can't give exhaustive to all embodiments.Conspicuous variation that every technical scheme that belongs to the utility model is amplified out or change still are in the row of the protection domain of the utility model.
Claims (10)
1. the underground cavern liquid level emasuring device is characterized in that: comprise the air blowing measurement module (9) and the gas blow pipe module that are connected through adapter piece.
2. underground cavern liquid level emasuring device according to claim 1; It is characterized in that: said air blowing measurement module (9) comprises first stop valve (10), filtering pressure reducer (11), constant flow control valve (12), metallic rotator flowmeter (13), first pressure unit (14), second pressure unit (15), differential pressure gauge (16), second stop valve (18) and the 3rd stop valve (20) on the spot, between said parts through the first stainless steel connecting pipe (17) and the second stainless steel connecting pipe (19) and utilize the clip-sleeve external-thread joint to be connected.
3. underground cavern liquid level emasuring device according to claim 1 is characterized in that: said gas blow pipe module comprises gas blow pipe (8).
4. underground cavern liquid level emasuring device according to claim 3 is characterized in that: said gas blow pipe (8) is the stainless steel jointless thickened steel-tube.
5. underground cavern liquid level emasuring device according to claim 4 is characterized in that: the exit of said gas blow pipe (8) is welded with stainless steel jointless concentric reducer (29) and forms the outlet of " V " font.
6. underground cavern liquid level emasuring device according to claim 1 is characterized in that: said air blowing measurement module (9) is arranged in the air blowing measurement module guard box (21).
7. underground cavern liquid level emasuring device according to claim 6; It is characterized in that: the both sides of said air blowing measurement module guard box (21) are connected with measurement line with source gas line through the straight-through BULKHEAD UNION (23) of first bite type, the straight-through BULKHEAD UNION (24) of second bite type and the straight-through BULKHEAD UNION (25) of the 3rd bite type, and the bottom of said air blowing measurement module guard box (21) is provided with electric interfaces (26).
8. underground cavern liquid level emasuring device according to claim 6 is characterized in that: said air blowing measurement module guard box (21) is provided with glass vision panel (22).
9. underground cavern liquid level emasuring device according to claim 1 is characterized in that: said air blowing measurement module guard box (21) is provided with air blowing measurement module guard box door lock (27).
10. underground cavern liquid level emasuring device according to claim 1 is characterized in that: said adapter piece is the cutting ferrule joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204898468U CN202339219U (en) | 2011-11-30 | 2011-11-30 | Underground cave depot liquid level measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204898468U CN202339219U (en) | 2011-11-30 | 2011-11-30 | Underground cave depot liquid level measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202339219U true CN202339219U (en) | 2012-07-18 |
Family
ID=46487910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204898468U Expired - Lifetime CN202339219U (en) | 2011-11-30 | 2011-11-30 | Underground cave depot liquid level measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202339219U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784052A (en) * | 2014-12-24 | 2016-07-20 | 中国二十冶集团有限公司 | Instrument measuring pipeline constructing method |
| CN106932137A (en) * | 2017-03-08 | 2017-07-07 | 清华大学 | A kind of long-range real-time measurement system of fluid pressure |
| CN112178458A (en) * | 2020-08-26 | 2021-01-05 | 清华大学 | Air blowing measuring device of nuclear pulse extraction column |
-
2011
- 2011-11-30 CN CN2011204898468U patent/CN202339219U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784052A (en) * | 2014-12-24 | 2016-07-20 | 中国二十冶集团有限公司 | Instrument measuring pipeline constructing method |
| CN106932137A (en) * | 2017-03-08 | 2017-07-07 | 清华大学 | A kind of long-range real-time measurement system of fluid pressure |
| CN106932137B (en) * | 2017-03-08 | 2019-05-14 | 清华大学 | A kind of long-range real-time measurement system of fluid pressure |
| CN112178458A (en) * | 2020-08-26 | 2021-01-05 | 清华大学 | Air blowing measuring device of nuclear pulse extraction column |
| CN112178458B (en) * | 2020-08-26 | 2021-08-06 | 清华大学 | Air blowing measuring device of nuclear pulse extraction column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180531 Address after: 250101 H tower, golden age Plaza, No. 9999, ten road, Ji'nan, Shandong Patentee after: CNOOC Petrochemical Engineering Co Ltd Address before: 266061 Haikou Road, Laoshan District, Qingdao, Shandong Province, No. 277 Patentee before: COOEC-ENPAL Engineering Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |
|
| CX01 | Expiry of patent term |