CN106032873A - Temperature measuring device for buried gas pipeline and installing method thereof - Google Patents
Temperature measuring device for buried gas pipeline and installing method thereof Download PDFInfo
- Publication number
- CN106032873A CN106032873A CN201610538005.9A CN201610538005A CN106032873A CN 106032873 A CN106032873 A CN 106032873A CN 201610538005 A CN201610538005 A CN 201610538005A CN 106032873 A CN106032873 A CN 106032873A
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- Prior art keywords
- temperature sensor
- temperature
- sealant
- measuring equipment
- temperature measuring
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides a temperature measuring device for a buried gas pipeline and an installing method thereof. The temperature measuring device comprises a temperature sensor, a heat insulating waterproof and anticorrosive layer and a temperature detection transmitter, the temperature sensor is used for being attached to the outer wall of the buried gas pipeline, the temperature sensor is wrapped by the heat insulating waterproof and anticorrosive layer, and the temperature detection transmitter is connected with the temperature sensor through a three-wire system wire. By means of the device and the method, temperature of the buried gas pipeline can be measured more precisely.
Description
Technical field
The present invention relates to a kind of leak test device being applied to steel gas pipe underground, particularly relate to one
Temperature measuring equipment and installation method thereof.
Background technology
Gas pipeline typically uses buried-pipe laying, if the pipeline leakage detection method being embedded in underground is improper,
Leak test conclusion can be caused to judge by accident, cause gas leakage and explosion accident.Buried pipeline is in underground
About 1m depths, if it occur that leakage is difficult to detection.In pipeline During Process of Long-term Operation, the combustion leaked out
Soil near leakage point is gathered or spreads along pipe trench, when combustion gas reaches finite concentration and meets naked light by gas
Time can breaking out of fire or blast.Therefore, buried pipeline slip is accurately detected, it is ensured that its tightness,
Buried pipeline safe operation is of great significance.
Existing newly-built gas pipeline leak test uses Minstry of Housing and Urban-Rural Development of People Republic of China (MOHURD) CJJ33-2005 " city gas transmission & distribution
Engineering construction and acceptance specification " regulation carry out, the regulation leak test of this specification continue 24 hours steady
In the pressure time, it is qualified that the pressure drop of correction must not exceed 133Pa.
In existing gas pipeline leak test method generally comprises pipe, medium temperature is measured and pressure measxurement.
Wherein, about temperature survey, the most conventional thermometry certainty of measurement is relatively low.In prior art
Typically using installing thermometer on the exhaust stack of valve well, the temperature recorded is protected from environmental relatively big,
Or directly being inserted by thermometer in the soil of conduit upper, the temperature recorded is the soil temperature of pipeline
In degree, with pipe there is larger difference in medium temperature.
Summary of the invention
In view of the problem existing for the conventional medium temperature measurement for steel gas pipe underground, mesh of the present invention
Be that providing a kind of measures temperature measuring equipment and installation method thereof the most accurately.
According to the first aspect of embodiment of the present invention, the invention provides a kind of for steel gas pipe underground
Temperature measuring equipment, this temperature measuring equipment includes: temperature sensor, is used for being attached at buried combustion gas
On the outer wall of pipeline；Adiabatic water-tight corrosion-proof layer, is wrapped in outside described temperature sensor；And temperature detection
Conveyer, it is connected with temperature sensor by three-wire system wire.
In a preferred embodiment, temperature sensor includes platinum resistance thermometer sensor, and aluminium flake, and platinum resistance thermometer sensor, passes through
Fluid sealant is fixed on described aluminium flake.
In a preferred embodiment, adiabatic water-tight corrosion-proof layer include from inside to outside heat insulation layer, sealant and
Anticorrosive coat.
Preferably, heat insulation layer is made up of adiabatic cotton and copper sulfate crystal, and wherein, copper sulfate crystal is distributed in
In temperature sensor and/or in adiabatic cotton and/or outside adiabatic cotton.Such as adiabatic cotton can be asbestos.
Preferably, sealant is rubber blanket, the part that sealant contacts with heat insulation layer and pipeline outer wall
It is coated with silica gel.
Preferably, anticorrosive coat is made up of Cold winding band.
In a preferred embodiment, between anticorrosive coat and sealant, it is additionally provided with waterproof layer, this waterproof layer
It is made up of marine glue.
Second aspect according to embodiment of the present invention, it is provided that the installation method of aforementioned temperature measurement apparatus,
The method comprises the steps: a, and temperature sensor is attached to the outer wall of steel gas pipe underground；B is right
Temperature sensor carries out water-tight corrosion-proof insulation.
In a preferred embodiment, step b includes: be wrapped in outside temperature sensor by heat insulation layer, and
Part covers the outer wall of the pipeline of described temperature sensor periphery；Sealant is wrapped in outside heat insulation layer, from
And heat insulation layer is fixed on the outer wall of temperature sensor and pipeline；Waterproof layer is coated in sealant periphery；
And anticorrosive coat is covered outside waterproof layer.
In a preferred embodiment, step b also includes: use flame gun heating, with fixing described temperature
Degree measurement apparatus.
The present invention has a following Advantageous Effects relative to prior art:
By temperature sensor being placed directly against the outer wall of pipeline, it is ensured that sensor contacts good with tube wall
Good；By temperature sensor is carried out water-tight corrosion-proof insulation, it is possible to reduce temperature is surveyed by external environment
The impact of amount, make that temperature sensor reflects is the true temperature of tested pipeline outer wall；By making sensor
It is connected with using three-wire system between temperature detection conveyer, the additional temp survey that connecting line brings can be eliminated
Amount error.
Further, since sensor is made up of platinum resistance thermometer sensor, and aluminium flake so that sensor (such as platinum resistance thermometer sensor,
Or aluminium flake) can be fully contacted with pipeline outer wall, it is ensured that thermometric quick response, and meet
Moistureproof measurement requirement damp proof and steady in a long-term.
Therefore, embodiment of the present invention provide said apparatus and method, it is possible to make for buried combustion gas
The temperature survey of pipeline is the most accurate.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the temperature measuring equipment according to one embodiment of the present invention；
Fig. 2 is the structural representation of the temperature sensor in Fig. 1；
Fig. 3 is the operation schematic diagram of the temperature measuring equipment in Fig. 1；
Fig. 4 is the method schematic diagram installing temperature measuring equipment according to one embodiment of the present invention.
Detailed description of the invention
It is described in detail to various aspects of the present invention below in conjunction with the drawings and specific embodiments.Wherein,
Parts in accompanying drawing are not necessarily drawn to scale, and it focuses on the principle to the present invention and carries out
Illustrate.
In various embodiments of the present invention, it is thus well known that structure or material are shown without or do not make in detail
Explanation.Further, described feature, structure or characteristic can be with any in one or more embodiments
Mode combines.Additionally, it will be appreciated by those skilled in the art that following various embodiments are served only for lifting
Example illustrates, not for limiting the scope of the invention.Can also be easy to understand, described herein and attached
Parts in each embodiment shown in figure can be arranged in multiple different configurations or ratio and be designed.
[the first embodiment]
Fig. 1 is the structural representation of the temperature measuring equipment according to one embodiment of the present invention, and Fig. 2 is
The structural representation of the temperature sensor of the temperature measuring equipment in Fig. 1；Fig. 3 is that the temperature in Fig. 1 is surveyed
The operation schematic diagram of amount device.
As shown in Figure 1 to Figure 3, the temperature measuring equipment in present embodiment is mainly used in buried Gas Pipe
Road, it may include be attached to pipeline outer wall 5 temperature sensor 1, be wrapped in outside temperature sensor 1 waterproof
Anticorrosion heat insulation layer 2 and temperature detection conveyer 3 (as shown in Figure 3), temperature sensor 1 and temperature
It is connected by three-wire system wire between detection conveyer 3.During use, temperature sensor is positioned in ground
Under, temperature detection conveyer rest on the ground, and can completely cut off temperature sensing by water-tight corrosion-proof heat insulation layer 2
Device and the contact of extraneous (such as, soil), thus reduce the thermometric error that soil environment causes.
As in figure 2 it is shown, temperature sensor 1 is preferably platinum resistance sensor (Pt100), this platinum heat
Electric resistance sensor 1 includes platinum resistance thermometer sensor, 11 and the aluminium flake 12 of high-precision surface, and use fluid sealant 13 will
The high-precision surface platinum resistance thermometer sensor, 11 of micro volume is fixed on the aluminium flake 12 of softness, and aluminium flake is preferably long
20mm, wide 20mm, thick 0.2mm.Aluminium flake 12 and pipeline outer wall 5 can be made to fit or make platinum
Thermal resistance 11 and pipeline outer wall 5 are to laminating, by making the aluminium flake of temperature sensor 1 or platinum resistance thermometer sensor, and pipe
Pipeline outer wall 5 is fully contacted, it is ensured that thermometric quick response, and meets moistureproof damp proof and long-term
Stable measurement requirement.
As it is shown in figure 1, the side of temperature sensor 1 is attached on pipeline outer wall, water-tight corrosion-proof heat insulation layer 2
It is wrapped in temperature sensor 1 outside and temperature sensor 1 is fixed on pipeline outer wall.Water-tight corrosion-proof is exhausted
Thermosphere 2 can include heat insulation layer 21, sealant 22 and anticorrosive coat 24 from inside to outside, i.e. heat insulation layer
21 are wrapped in outside temperature sensor, and it is outer with by heat insulation layer 21 and temperature that sealant 22 is wrapped in heat insulation layer 21
Sensor 1 is fixed on pipeline outer wall, anticorrosive coat 24 is wrapped in outside sealant 22.
Wherein, heat insulation layer 21 is preferably and is made up of adiabatic cotton and copper sulfate crystal, and such as copper sulfate crystal can
To be distributed on the aluminium flake 12 of temperature sensor 1 and/or in adiabatic cotton and/or outside adiabatic cotton.Heat insulation layer
In copper sulfate crystal be anhydrous cupric sulfate, on the one hand can absorb the moist gas in heat insulation layer, the opposing party
Whether face inspection heat insulation layer is by the intact sealing of sealant.Adiabatic cotton is preferably asbestos, or other glass cottons
Deng.By arranging heat insulation layer 21, it is possible to reduce the measurement of pipeline outer wall temperature is affected by external environment.
Sealant 22 is preferably rubber blanket, and its portion contacted with heat insulation layer is coated with silica gel with fixing heat insulation layer,
Thus heat insulation layer is fixed and is sealed on temperature sensor and pipeline outer wall, such as, the rubber of sealant
Pad can be the rubber blanket of valve verification.
Anticorrosive coat 24 is preferably made up of Cold winding band, and Cold winding band is to be wound around, for anticorrosion, the adhesive tape used, its
Anticorrosion is waterproof, can temperature sensor 1, heat insulation layer 21, sealant 22 be fastened on pipeline outer wall.
Preferably, between anticorrosive coat 24 and sealant 22, waterproof layer 23 it is also provided with waterproof to strengthen
Effect, waterproof layer is preferably marine glue coating.Waterproof layer is when coating, in addition to being coated in sealant,
The periphery of the most coatable part contacted with pipeline outer wall at sealant.
Preferably, flame gun can be used to heat after parcel water-tight corrosion-proof heat insulation layer, survey with fixed temperature
Amount device.
As shown in Figures 2 and 3, for connecting three lines of temperature sensor 1 and temperature detection conveyer 3
Wire processed includes three of the wires 41,42 and 43, and wherein, wire 41 and 42 connects one end of platinum resistance thermometer sensor,
Wire 43 connects the other end of platinum resistance thermometer sensor, owing to the platinum resistance thermometer sensor, volume of sensor is small, and wire 41
Merge into a line with 42 one end being connected with sensor, be divided into after spreading out of platinum resistance thermometer sensor, two wires with
Temperature detection conveyer 3 connects.Being connected by such three-wire system, can eliminate that wire brings is additional
Thermometric error.
In the present embodiment, temperature sensor 1 is placed directly against the appropriate location (pipe of pipeline outer wall 5
Pipeline outer wall answers clean dried), it is ensured that sensor 1 contacts with pipeline outer wall 5 well, afterwards in temperature sensing
Device 1 outer wrapping water-tight corrosion-proof heat insulation layer 2 is to carry out water-tight corrosion-proof thermal insulation protective treatment, to reduce extraneous ring
Border is on thermometric impact, and make that temperature sensor 1 reflects is the true temperature of tested pipeline outer wall 5,
When measuring temperature, transmit signals to temperature detection conveyer 3 by wire 4, then by temperature detection transmission
The signal detected is sent to computerized control system record and processes by device 3.
[the second embodiment]
Embodiments of the present invention additionally provide a kind of method installing temperature measuring equipment.According to Fig. 4
The method schematic diagram installing temperature measuring equipment of one embodiment of the present invention.As shown in Figure 4, the party
Method includes: a, and temperature sensor is attached to the appropriate location (pipeline outer wall answers clean dried) of pipeline outer wall；
B, carries out water-tight corrosion-proof thermal insulation cladding protective treatment, such that it is able to reduce external environment pair to temperature sensor
Thermometric impact, make that temperature sensor reflects is the true temperature of tested pipeline outer wall, by temperature
The information detected is sent to computerized control system record and processes by detection conveyer.Wherein, step
Rapid b includes: i, is wrapped in outside temperature sensor 1 by heat insulation layer 21, and part is covered in temperature sensor
The pipeline outer wall of 1 periphery, wherein, heat insulation layer 21 is preferably for by asbestos and the sulphuric acid being distributed in asbestos
Copper crystal forms, and such as copper sulfate crystal can be sprinkling upon on the aluminium flake 12 of temperature sensor 1 and/or asbestos
In and/or asbestos outside；Ii, is wrapped in heat insulation layer 21 outside thus by heat insulation layer 21 by sealant 22
Being fixed on temperature sensor and pipeline outer wall, wherein, sealant 22 is preferably rubber blanket, such as valve
The rubber blanket of door verification, what it contacted with heat insulation layer is partially coated with silica gel with fixing heat insulation layer；Iii, will
Waterproof layer 23 is coated in sealant 22 periphery, and (such as, waterproof layer, in addition to being coated in sealant, is also coated with
Apply the periphery of the part contacted at sealant with pipeline outer wall), waterproof layer 23 is preferably marine glue coating；
Iv, covers anticorrosive coat 24 at waterproof layer 23 that outer (such as, anticorrosive coat is except covering in addition to waterproof layer, also
Also cover the periphery of the part contacted at waterproof layer or sealant with pipeline outer wall), with by temperature sensor 1,
Heat insulation layer 21 and sealant 22 are fixed on pipeline outer wall, and wherein, anticorrosive coat 24 is preferably prevented for anticorrosion
Water-cooled tape wrap, uses adhesive tape be wound around sealant and pipeline outer wall and ensure that sealant does not contacts with the external world.
Wherein, step iii can be omitted, and can be not coated by waterproof layer.Preferably, step b may also include that v, at bag
Wrapping up in the forward and backward of anticorrosive coat 24 uses flame gun to heat, with fixed temperature measurement apparatus.
Present invention is mainly used for measuring medium temperature in steel gas pipe underground, this test uses indirectly
Measuring method.
Before gas pipeline buried-pipe laying, first the air inlet of pipeline and gas exhaust piping and valve are connected, with
In time, install in place by Pressure gauge and temperature measuring equipment, and is connected with computer testing platform, preparation
In gas pipeline being positioned over pipe trench after completing and backfill soil.When measuring temperature, first pass through outside pipeline
The temperature measuring equipment of wall measures tube wall temperature, is then passed through empirical formulas for gas temperature (temperature in pipe
Degree reduction formula mainly considers pipe material, heat-insulation layer material and thickness, and the shadow of ambient soil temperature
Ring).
Meanwhile, in order to eliminate the impact of gas temperature skewness in long-distance pipe, it would however also be possible to employ edge
Pipeline section arranges multiple temperature measuring equipments, using its arithmetic mean of instantaneous value as tube wall temperature.
The term used in description of the invention and wording, just to illustrating, are not intended to constitute limit
Fixed.It will be appreciated by those skilled in the art that before the ultimate principle without departing from disclosed embodiment
Put, each details in above-mentioned embodiment can be carried out various change.Therefore, the protection model of the present invention
Enclosing and only determined by claim, in the claims, except as otherwise noted, all of term should be by the widest
The general rational meaning understands.
Claims (10)
1. for the temperature measuring equipment of steel gas pipe underground, including:
Temperature sensor, for being attached at the outer wall of steel gas pipe underground；
Adiabatic water-tight corrosion-proof layer, is wrapped in outside described temperature sensor；And
Temperature detection conveyer, is connected with described temperature sensor by three-wire system wire.
Temperature measuring equipment the most according to claim 1, described temperature sensor include platinum resistance thermometer sensor, and
Aluminium flake, described platinum resistance thermometer sensor, is fixed on described aluminium flake by fluid sealant.
Temperature measuring equipment the most according to claim 1, described adiabatic water-tight corrosion-proof layer wraps from inside to outside
Include heat insulation layer, sealant and anticorrosive coat.
Temperature measuring equipment the most according to claim 3, described heat insulation layer is by adiabatic cotton and copper sulfate crystal
Composition, wherein, copper sulfate crystal is distributed in temperature sensor and/or in adiabatic cotton and/or outside adiabatic cotton.
Temperature measuring equipment the most according to claim 3, described sealant is rubber blanket, and sealant is with exhausted
The part that thermosphere and pipeline outer wall contact is coated with silica gel.
Temperature measuring equipment the most according to claim 3, described anticorrosive coat is made up of Cold winding band.
Temperature measuring equipment the most according to claim 3, is additionally provided with between described anticorrosive coat and sealant
Waterproof layer, described waterproof layer is made up of marine glue.
8. according to the installation method of the temperature measuring equipment according to any one of claim 1-7, including walking as follows
Rapid:
A, is attached to the outer wall of steel gas pipe underground by temperature sensor；
B, carries out water-tight corrosion-proof insulation to described temperature sensor.
Installation method the most according to claim 8, wherein step b includes:
Heat insulation layer is wrapped in outside temperature sensor, and part covers the pipeline of described temperature sensor periphery
Outer wall；
Sealant is wrapped in outside heat insulation layer, thus heat insulation layer is fixed on outside temperature sensor and pipeline
On wall；
Waterproof layer is coated in sealant periphery；And
Anticorrosive coat is covered outside waterproof layer.
Installation method the most according to claim 9, wherein step b also includes:
Use flame gun heats, with fixing described temperature measuring equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538005.9A CN106032873A (en) | 2016-07-05 | 2016-07-05 | Temperature measuring device for buried gas pipeline and installing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538005.9A CN106032873A (en) | 2016-07-05 | 2016-07-05 | Temperature measuring device for buried gas pipeline and installing method thereof |
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| CN106032873A true CN106032873A (en) | 2016-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610538005.9A Pending CN106032873A (en) | 2016-07-05 | 2016-07-05 | Temperature measuring device for buried gas pipeline and installing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654284A (en) * | 2020-05-12 | 2021-11-16 | 浙江三花制冷集团有限公司 | Temperature sensing part and refrigerating system with same |
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