CN110203574A - A kind of tank bottom oil leak monitoring device - Google Patents
A kind of tank bottom oil leak monitoring device Download PDFInfo
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- CN110203574A CN110203574A CN201910404761.6A CN201910404761A CN110203574A CN 110203574 A CN110203574 A CN 110203574A CN 201910404761 A CN201910404761 A CN 201910404761A CN 110203574 A CN110203574 A CN 110203574A
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- Prior art keywords
- cable
- tank bottom
- oily
- monitoring device
- holes
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
- B65D90/50—Arrangements of indicating or measuring devices of leakage-indicating devices
- B65D90/51—Arrangements of indicating or measuring devices of leakage-indicating devices characterised by sensors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of tank bottom oil leak monitoring devices, comprising: pvc pipe with holes is embedded in the sand bedding course of tank bottom, and multiple pvc pipe arranged for interval with holes are in sand bedding course；Feel oily cable, be mounted in pvc pipe with holes, the quantity Matching for feeling oily cable and pvc pipe with holes is arranged；Cut cable box is connected to the oily cable end of sense, feels oily cable ends end and is separately connected a cut cable box；Connecting cable, both ends are respectively connected in the cut cable box that adjacent two are felt oily cable one end end；Cable connection terminal, one end are connected in the cut cable box of outermost sense oil cable one end end；Warning device is set to outside storage tank and connect with the cable connection terminal other end.The invention has the benefit that tank bottom leakage monitoring warning function can be realized, and leak position can be estimated, improve storage tank integrality and operational safety, tank bottom leakage monitoring is made to more tend to functionization, reduce equipment investment and operating expenses.
Description
Technical field
The present invention relates to pipe-line system technical fields, in particular to a kind of tank bottom oil leak monitoring device.
Background technique
During conduit running, due to tank bottom burn into construction quality, fault in material and foundation crack etc., cause
Make tank bottom oil leak, finally ferment into safety and environmental pollution accident, it is very big unfavorable to cause to society and enterprise
It influences, more the security of the lives and property to the people around tank field, which is brought, seriously threatens.If grasping tank bottom not in time
The relevant informations such as whether leak, handled in time, will lead to damage sequence and constantly aggravate, causes serious environmental pollution and again
The big person and property loss.
For tank bottom oil leak, previous engineering can not carry out leakage monitoring, can not find leakage problem in time, lead
Cause only when there are the major accidents such as the observable leakage oil product of human eye and pollution, could find relevant issues.
Summary of the invention
To solve the above problems, being realized the purpose of the present invention is to provide a kind of tank bottom oil leak monitoring device
Tank bottom leakage monitoring alarm, make tank bottom oil leak monitoring, alarming speed more in time, accuracy rate it is higher, improve storage tank
And periphery personnel and property safety.
The present invention provides a kind of tank bottom oil leak monitoring devices, comprising:
Pvc pipe with holes, is embedded in the sand bedding course of tank bottom, and multiple pvc pipes with holes are equidistantly spaced from institute
It states in sand bedding course；
Feel oily cable, is mounted in the pvc pipe with holes, the quantity for feeling oily cable and the pvc pipe with holes
Quantity Matching setting；
Cut cable box, is connected to the oily cable end of the sense, and the sense oily cable ends end is separately connected an institute
State cut cable box；
Connecting cable, both ends are respectively connected in the adjacent two cut cable boxes for feeling oily cable one end end, more
The oily cable of sense described in root is joined end to end by connection cables formation；
Cable connection terminal, one end are connected in the cut cable box of outermost sense oil cable one end end；
Warning device is set to outside the storage tank and connect with the cable connection terminal other end.
As further improvement of the invention, the oily cable of the sense is osmosis type cable, and inside is cable, and appearance is coated with
Water proof and the thoroughly insulating materials of oil.
As further improvement of the invention, the warning device includes signal generator, data collecting card, signal processing
The output end of circuit, processor and display, the input terminal of the data collecting card and the signal generator accesses outermost
In the cut cable box for feeling oily cable one end end, the input terminal of the output end of the data collecting card and the signal processing circuit
Connection, the output end of the signal processing circuit are connect with the input terminal of the processor, the output end of the processor and institute
State display connection.
As further improvement of the invention, insulating layer is provided between the tank bottom and the sand bedding course.
As further improvement of the invention, the insulating layer is asphaltic sands.
As further improvement of the invention, the sand bedding course bottom setting compacting layer.
As further improvement of the invention, the compacting layer is back fill course.
As further improvement of the invention, anti-leakage layer is provided between the sand bedding course bottom and the compacting layer.
As further improvement of the invention, the anti-leakage layer is HDPE film.
The invention has the benefit that
Tank bottom leakage monitoring warning function can be achieved, and leak position can be estimated, improve storage tank integrality and operation
Safety makes tank bottom leakage monitoring more tend to functionization, reduces equipment investment and operating expenses.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of tank bottom oil leak monitoring device described in the embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of tank bottom oil leak monitoring device installation described in the embodiment of the present invention.
In figure,
1, storage tank；2, feel oily cable；3, cut cable box；4, connecting cable；5, cable connection terminal；6, pvc pipe with holes；7,
Insulating layer；8, sand bedding course；9, anti-leakage layer；10, layer is tamped.
Specific embodiment
The present invention is described in further detail below by specific embodiment and in conjunction with attached drawing.
As shown in Figs. 1-2, a kind of tank bottom oil leak monitoring device of the embodiment of the present invention, comprising: pvc pipe with holes
6, feel oily cable 2, cut cable box 3, connecting cable 4, cable connection terminal 5 and warning device.
Pvc pipe 6 with holes is embedded in the sand bedding course 8 of 1 bottom of storage tank, according to the area of 1 bottom of storage tank, is arranged multiple with holes
Pvc pipe 6, and arranged for interval is in sand bedding course 8.Preferably, by multiple pvc pipes 6 with holes according to 1 size of storage tank to be equally spaced
In sand bedding course 8.Pvc pipe has preferable mechanical property, and excellent electrical properties, acid and alkali-resistance power is extremely strong, and chemical stability is good, tool
There is good watertightness.The hole of pvc pipe 6 with holes is the reticular structure that polyvinyl chloride fibre is formed, and this material has good
Chemical stability, it is nonflammable, insulation impedance character constancy is good.This pvc pipe 6 with holes is laid in sand bedding course 8, not by
The influence of soil moisture changes according to the characteristic of oil, the characteristic with hydrophobic oleophilic oil.When oil leak, oil product leaks into PVC with holes
On pipe 6, according to the material property of pvc pipe 6 with holes, the infiltration oil of 6 selectivity of pvc pipe with holes.Each pvc pipe with holes 6 is distinguished
According to the storage tank length pre-production at its installation position.
Feel oily cable 2 to be mounted in pvc pipe 6 with holes, the quantity Matching of the quantity and pvc pipe 6 with holes of feeling oily cable 2 is set
It sets, and the length matched design of the every length for feeling oily cable 2 and its pvc pipe with holes 6 installed, feels the both ends of oily cable 2
The both ends for exposing to pvc pipe 6 with holes, are easily installed cut cable box 3.Corrosion failure or rupture, oil product occur at 1 bottom plate of storage tank
It is leaked out from from this, the oil product leaked out touches on the sense oil cable 2 being embedded in after being permeated by pvc pipe 6 with holes.
Cut cable box 3 is connected to 2 end of the oily cable of sense, feels 2 both ends end of oily cable and is separately connected a cut cable box 3.
The both ends of connecting cable 4 are respectively connected in the cut cable box 3 that adjacent two are felt 2 one end end of oily cable.Cable connection terminal 5
One end is connected in the cut cable box 3 of 2 one end end of outermost sense oil cable.Warning device be set to the outside of storage tank 1 and with end
Hold the connection of 5 other end of connecting cable.
Inlet-outlet line is locked and fixed to cut cable box 3 for two sections of cable connections to be got up, and it is shockproof to play water proof and dust proof
Dynamic effect enables entire tank bottom oil leak monitoring device safely and reliably to run.For that will feel in the present embodiment
Oily cable 2 and connecting cable 4 connect, and will feel oily cable 2 and cable connection terminal 5 connects.As shown in Figure 1, the oily cable 2 of more senses
It is joined end to end by the formation of connection cables 4, so that the oily cable 2 of more senses forms whole continuous line, is realized to entire 1 bottom of storage tank
The all standing of portion's leakage monitoring, and alarm is transmitted to by cable connection terminal 5 convenient for feeling every the detection information of oily cable 2
Device.
Sense oil cable 2 in the present embodiment is osmosis type cable, and inside is cable, coated with the water proof and saturating oil of appearance it is exhausted
Edge material, such as PVC material with holes (polyvinyl chloride fibre formed reticular structure), it is oily after oil leak when storage tank 1 inside
Product are seeped on the oily cable 2 of sense by pvc pipe 6 with holes, and the insulating materials for feeling oily cable 2 can penetrate into oil product, so that feeling oily cable 2 should
The electrical characteristic of point changes, such as resistance value changes, and impedance changes, and the variation for feeling 2 impedance of oily cable is adjoint
The variation of electric signal (such as voltage signal).Feel the electric signal that oily cable 2 changes to be compared with electric signal when No leakage, if
Difference is then assert more than threshold value to be leaked at this.The position changed by computing impedance, to complete to detect and position.It utilizes
This feature, can judge 1 bottom plate of storage tank whether corrosion failure or rupture, while being changed using the electrical characteristic for feeling oily cable 2
The Position Approximate of leakage point can be positioned.
Pvc pipe 6 with holes is set and is easily installed the oily cable 2 of sense, provides first layer water proof insulating layer to feel oily cable 2, protects
Feel oily cable 2 is not influenced by soil moisture, also provides good chemical stabilization environment and insulation environment to feel oily cable 2.Sense oil
Insulating materials of the appearance of cable 2 coated with water proof and saturating oil, provides the second water proof insulating layer for inside cable, protects internal electricity
Cable is not influenced by soil moisture, also provides good chemical stabilization environment and insulation environment for inside cable, it is ensured that inside cable
Electrical characteristic after contacting with oil product can in time, accurately change, and let out conducive to the oil product for real-time monitoring storage tank bottom plate
Leakage.
Warning device can be set outside storage tank 1, be managed convenient for staff.Warning device includes signal
Device, data collecting card, signal processing circuit, processor and display, the output end access outermost sense oil electricity of signal generator
In the cut cable box 3 of 2 one end end of cable, the cable of input terminal access 2 one end end of outermost sense oil cable of data collecting card
It holds in box 3, the output end of data collecting card and the input terminal of signal processing circuit connect, the output end of signal processing circuit and place
The input terminal connection of device is managed, the output end of processor is connect with display.Signal processing circuit includes sequentially connected amplification electricity
Road, filter circuit and analog to digital conversion circuit.Data collecting card, signal processing circuit and processor can integrate be designed as one it is whole
Alarm threshold value and sampling time and timing program etc. can be arranged above in body, such as handheld terminal etc..Signal generator generates
Pumping signal, data collecting card acquire the electric signal for the electrical characteristic variation for feeling oily cable 2 and the time delayed signal of reflection, letter in real time
The electric signal and time delayed signal of the electrical characteristic variation of number processing circuit energy real-time reception sense oil cable 2, are flooded for anti-stop signal
Not yet, signal processing circuit amplifies signal using preamplifier and post-amplifier, and impedance is extracted from noise signal
The voltage signal and time delayed signal of variation after filtering using filter circuit, carry out analog-to-digital conversion, voltage signal after conversion and prolong
When signal be sent into processor and calculated, and be compared with preset alarm threshold value, when difference is more than voltage signal threshold
It when value, carries out calculating the impedance for obtaining leakage point and position, while show signal processing circuit over the display treated instead
The time domain waveform of signal is penetrated, and triggers alarm and shows leakiness and the leakage position of leakage point.Difference and threshold value are carried out
Compare, may be set to several leak degrees such as basic, normal, high, understand leak degree in time convenient for staff, and carries out corresponding journey
The response of degree.
Handle implement body computational theory are as follows: each point structure size difference leads to the resistance value of each point not to cable along its length
Together, that is to say, that the impedance of each point is different, and impedance reflection is the non-uniform time domain of cable resistance i.e. length direction characteristic, letter
Number during transmission, if the characteristic impedance in transmission path changes, signal will be in the node of impedance discontinuity
Generate reflection.When energy is along the oily propagation of cable 2 is felt, when encountering leakage point impedance variations, has portion of energy and reflects,
The impedance Z of leakage point and reflection coefficient ρ (the i.e. reflected wave voltage V of leakage point for feeling oily cableInsteadWith the incidence wave of signal generator
Voltage VEnterThe ratio between) meet following relational expression:
In formula, Z is leakage point impedance value, Z0For the output impedance of measuring instrument, ρ is reflection coefficient, wherein incidence wave electricity
As long as pressure is it is known that measure the collected voltage signal of reflected wave voltage i.e. data collecting card of leakage point, so that it may calculate anti-
The value of coefficient is penetrated, and (has just been measured installing entire tank bottom oil leak monitoring device) known to output impedance, this
Sample can calculate the impedance value of leakage point.
According to the transmission delay of leakage point, the position of leakage point can be calculated by transmission delay value:
In formula, L is the length of leakage point distance signal generator, and V is transmission speed of the signal in the oily cable 2 of sense, and T is
The delay value read in measuring instrument, C are the light velocity, εrFor the dielectric constant for feeling oily cable 2.
Further, sand bedding course 8 is good, scleroid medium coarse sand and rubble, cobble etc., layered rammer using gradation
In fact, the supporting course based on.
Further, insulating layer 7 is provided between 1 bottom of storage tank and sand bedding course 8.Preferably, insulating layer 7 is tar sand
Layer.
Further, 8 bottom of sand bedding course setting compacting layer 10.Preferably, compacting layer 10 is back fill course.
Further, anti-leakage layer 9 is provided between 8 bottom of sand bedding course and compacting layer 10.Preferably, anti-leakage layer 9 is
HDPE film.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of tank bottom oil leak monitoring device characterized by comprising
Pvc pipe (6) with holes is embedded in the sand bedding course (8) of storage tank (1) bottom, and multiple pvc pipes (6) with holes are at equal intervals
It is arranged in the sand bedding course (8)；
Feel oily cable (2), is mounted in the pvc pipe with holes (6), the quantity for feeling oily cable (2) and the PVC with holes
Manage the quantity Matching setting of (6)；
Cut cable box (3), is connected to oily cable (2) end of the sense, and oily cable (2) the both ends end of the sense is separately connected one
A cut cable box (3)；
Connecting cable (4), both ends are respectively connected to the adjacent two cut cable boxes (3) for feeling oily cable (2) one end end
Interior, the oily cable (2) of the more senses is formed by connection cables (4) to be joined end to end；
Cable connection terminal (5), one end are connected in the cut cable box (3) of outermost sense oil cable (2) one end end；
Warning device is set to the storage tank (1) outside and connect with the cable connection terminal (5) other end.
2. tank bottom oil leak monitoring device according to claim 1, which is characterized in that the oily cable (2) of the sense
For osmosis type cable, inside is cable, insulating materials of the cable appearance coated with water proof and saturating oil.
3. tank bottom oil leak monitoring device according to claim 1, which is characterized in that the warning device includes
Signal generator, data collecting card, signal processing circuit, processor and display, the input terminal of the data collecting card and institute
It states in the cut cable box (3) of output end access outermost sense oil cable (2) one end end of signal generator, the data acquisition
The output end of card is connect with the input terminal of the signal processing circuit, the output end of the signal processing circuit and the processor
Input terminal connection, the output end of the processor connect with the display.
4. tank bottom oil leak monitoring device according to claim 1, which is characterized in that storage tank (1) bottom
Insulating layer (7) are provided between the sand bedding course (8).
5. tank bottom oil leak monitoring device according to claim 4, which is characterized in that the insulating layer (7) is
Asphaltic sands.
6. tank bottom oil leak monitoring device according to claim 1, which is characterized in that sand bedding course (8) bottom
Portion's setting compacting layer (10).
7. tank bottom oil leak monitoring device according to claim 6, which is characterized in that the compacting layer (10) is
Back fill course.
8. tank bottom oil leak monitoring device according to claim 6, which is characterized in that sand bedding course (8) bottom
Anti-leakage layer (9) are provided between portion and the compacting layer (10).
9. tank bottom oil leak monitoring device according to claim 8, which is characterized in that the anti-leakage layer (9)
For HDPE film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910404761.6A CN110203574A (en) | 2019-05-15 | 2019-05-15 | A kind of tank bottom oil leak monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910404761.6A CN110203574A (en) | 2019-05-15 | 2019-05-15 | A kind of tank bottom oil leak monitoring device |
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| Publication Number | Publication Date |
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| CN110203574A true CN110203574A (en) | 2019-09-06 |
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| CN201910404761.6A Pending CN110203574A (en) | 2019-05-15 | 2019-05-15 | A kind of tank bottom oil leak monitoring device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008259313A (en) * | 2007-04-04 | 2008-10-23 | Chugoku Electric Power Co Inc:The | Of cable abnormality detector, and method of detecting oil leakage from of cable |
| CN202442856U (en) * | 2012-01-15 | 2012-09-19 | 税爱社 | Sensing-cable oil-leakage detection apparatus |
| CN103629536A (en) * | 2013-11-13 | 2014-03-12 | 常州大学 | Device and method for monitoring natural gas pipeline leakage |
| CN207248463U (en) * | 2017-08-18 | 2018-04-17 | 毛昌伟 | A kind of oil leak detecting system |
| CN209922080U (en) * | 2019-05-15 | 2020-01-10 | 中国石油天然气集团有限公司 | Oil leakage monitoring device at bottom of storage tank |
-
2019
- 2019-05-15 CN CN201910404761.6A patent/CN110203574A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008259313A (en) * | 2007-04-04 | 2008-10-23 | Chugoku Electric Power Co Inc:The | Of cable abnormality detector, and method of detecting oil leakage from of cable |
| CN202442856U (en) * | 2012-01-15 | 2012-09-19 | 税爱社 | Sensing-cable oil-leakage detection apparatus |
| CN103629536A (en) * | 2013-11-13 | 2014-03-12 | 常州大学 | Device and method for monitoring natural gas pipeline leakage |
| CN207248463U (en) * | 2017-08-18 | 2018-04-17 | 毛昌伟 | A kind of oil leak detecting system |
| CN209922080U (en) * | 2019-05-15 | 2020-01-10 | 中国石油天然气集团有限公司 | Oil leakage monitoring device at bottom of storage tank |
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Application publication date: 20190906 |