CN110257834A - Casing interior conduit cathodic protection detection device and its installation method - Google Patents
Casing interior conduit cathodic protection detection device and its installation method Download PDFInfo
- Publication number
- CN110257834A CN110257834A CN201910673004.9A CN201910673004A CN110257834A CN 110257834 A CN110257834 A CN 110257834A CN 201910673004 A CN201910673004 A CN 201910673004A CN 110257834 A CN110257834 A CN 110257834A
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- Prior art keywords
- casing
- test piece
- measurement pipe
- pipeline
- reference electrode
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- 238000001514 detection method Methods 0.000 title claims abstract description 45
- 238000004210 cathodic protection Methods 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 103
- 238000012360 testing method Methods 0.000 claims abstract description 88
- 238000010276 construction Methods 0.000 claims abstract description 12
- 239000011810 insulating material Substances 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 239000000945 filler Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 210000004262 dental pulp cavity Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/22—Monitoring arrangements therefor
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/32—Pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
A kind of casing interior conduit cathodic protection detection device, is mounted in the clearance space between casing and pipeline, including the measurement pipe being made of insulating material, is equipped with reference electrode and test piece in the measurement pipe；On the installing port that the tube wall that the reference electrode and test piece are installed in the measurement pipe is correspondingly arranged, the outer end of the reference electrode and the outer end of test piece are recessed inwardly both with respect to corresponding installing port.The installation method of detection device includes: that casing is embedded, and construction hole is dug, and pipeline and detection device are assembled and be packed into.Casing interior conduit cathodic protection detection device is by the way that reference electrode and test piece to be packed in measurement pipe; reference electrode and test piece can be accurately sent in casing; and the relative position between reference electrode and test piece is accurate; reference electrode and pipe lap and test piece are avoided simultaneously and casing overlaps; so as to accurately detect the electrical potential information on casing interior conduit, the detection to casing interior conduit cathode protecting state is realized.
Description
Technical field
The invention belongs to cathodic protection anti-corrosion testing equipment fields more particularly to a kind of casing interior conduit cathodic protection to detect
Device and its installation method.
Background technique
It is embedded in the pipeline of underground, it is often necessary to across the lower section of highway or railway.Due to being transported on highway or railway
Capable vehicle can generate pressure to lower section ground, in order to avoid pressure causes to damage to pipeline, it is therefore desirable under highway, railway
The embedded casing in side, pipeline pass through casing, are protected by casing to pipeline, pressure is avoided to cause pipe damage.
When pipeline carries out anti-corrosion by the way of cathodic protection, since the void space between casing and pipeline is minimum,
The device that common reference electrode, test piece etc. power on position for detecting pipeline is difficult to pack into casing, therefore can not detect casing
The cathode protecting state of interior conduit.
Even if reference electrode and test piece are initially charged in casing in construction, then pipeline is sent into casing, but pipeline fills
It is fashionable to be easy to form collision to reference electrode and test piece, squeeze or pull, make the relative position between reference electrode and test piece
It is difficult to ensure, and the setting position of reference electrode and test piece is also difficult to be accurately positioned, and easily causes reference electrode and pipe
The overlap joint in road, makes reference electrode fail, and can not accurately detect the current potential on pipeline.
Summary of the invention
The present invention proposes a kind of energy aiming at the problem that the above-mentioned prior art can not detect casing interior conduit cathode protecting state
The casing interior conduit cathodic protection detection device and its installation method of enough effectively detection casing interior conduit cathode protecting states.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of casing interior conduit cathodic protection detection device, is mounted in the clearance space between casing and pipeline, including
The measurement pipe being made of insulating material is equipped with reference electrode and test piece in the measurement pipe；
On the installing port that the tube wall that the reference electrode and test piece are installed in the measurement pipe is correspondingly arranged, the reference
The outer end of electrode and the outer end of test piece are recessed inwardly both with respect to corresponding installing port.
Preferably, being filled with insulated enclosure filler in the measurement pipe, the reference electrode and test piece are respectively positioned on insulation
In airtight and watertight padding.
Preferably, the measurement pipe in install test piece include the first test piece and the second test piece, first test piece and
Second test piece is located at reference electrode two sides, and the spacing between reference electrode is identical.
Preferably, the measurement pipe is divided into measuring section and linkage section, multiple, the reference electrode is arranged in the measuring section
It is located in measuring section with test piece, adjacent measuring section is connected by linkage section.
Preferably, the measurement pipe passes through the insulating carriage being arranged in the clearance space.
Preferably, the insulating carriage is annular, it is sleeved on pipeline, the insulating carriage is provided with intercommunicating pore
Or connectivity slot, pass through measurement pipe.
Preferably, the pipeline top, lower section and the left and right sides are provided with measurement pipe.
Preferably, being equipped with reinforcing rib in the measurement pipe.
Preferably, the reinforcing rib is fixed on the end cap of measurement tube end installation.
A kind of installation method of casing interior conduit cathodic protection detection device, steps are as follows:
Casing is buried to underground, construction hole is excavated in casing two sides, extend into cannula tip in construction hole；
Insulating carriage is installed on pipeline, above-mentioned casing interior conduit cathodic protection detection device is penetrated into insulation branch
In the connectivity slot of support setting, the conducting wire of detection device setting is stretched out relative to pipe end；
It is axial to push pipeline by lifting pipeline and the port of alignment sleeve, pipeline is sent to by the port of casing one end
In casing, until pipe end is stretched out by the port of the casing other end；
Conducting wire outer end is drawn to more than ground, construction hole is filled and led up.
Compared with prior art, the advantages and positive effects of the present invention are:
1, casing interior conduit cathodic protection detection device will be measured by the way that reference electrode and test piece to be packed in measurement pipe
Pipe is encased in the clearance space between casing and pipeline, can accurately be sent to reference electrode and test piece in casing, and
And the relative position between reference electrode and test piece is accurate, while avoiding reference electrode and pipe lap and test piece and casing
Overlap joint is realized so as to accurately detect the electrical potential information on casing interior conduit to casing interior conduit cathode protecting state
Detection.
2, reference electrode and test piece are located in insulating packing, and the partial denudation for being only located at measurement pipe installing port outside, guarantees
While to pipeline potentiometric detection, the insulation between reference electrode and test piece ensure that, to guarantee that potentiometric detection is accurate, prevent
Reference electrode avoids reference electrode from failing by test piece and pipe lap.
3, reference electrode two sides are respectively provided with test piece, and test piece is identical at a distance from reference electrode, by measuring reference electrode
With the potential difference of two test pieces, two electrical potential informations can be obtained simultaneously, to more be accurately obtained on corresponding position pipeline
Electrical potential information, improve the accuracy of casing interior conduit cathode protecting state detection, and two test pieces can be mutually as standby
Part, guarantee detection device service life.
4, multiple measuring sections are arranged in measurement pipe, and reference electrode and test piece in measuring section is enable to divide in set inner axial tube
Cloth carries out the detection of cathode protecting state to multiple positions in pipeline axial direction, prevents so as to sufficiently know that pipeline is whole
Rotten situation.In addition, whole root canal part is alternately connected in series by measuring section and linkage section, make measuring section and the single length of linkage section compared with
It is short, manufacture easy to process and site operation, while reducing the intensity requirement of pipe fitting.
5, pipeline top, the settable measurement pipe in lower section and the left and right sides, thus each position on pipeline outer wall circumference
The potential state of pipeline is detected, to further sufficiently know the anti-corrosion situation of pipeline entirety.
6, reinforcing rib is equipped in measurement pipe, reinforcing rib is supported measurement pipe, prevent wherein subordinate fall to form flexing
Deformation guarantees stable structure so that measurement pipe be avoided to be broken, and improves equipment life.When measurement pipe is divided into multistage, reinforce
Muscle can tense multistage pipe fitting, and measuring section and linkage section is prevented to disconnect.In addition, can also be to adding in measurement pipe installation
Strengthening tendons are pulled, and are guaranteed measurement pipe and tunnel synchronization movement, are accurately entered in casing, and measurement pipe and casing generation
Frictional force will be undertaken by reinforcing rib, and measurement pipe is prevented to be pulled off.
7, measuring device is first fixed on insulating carriage, then as pipeline is fitted into casing together, alleviates detection dress
The drawing being subject to during installation is set, avoids the pipe fitting of measuring device from being broken, and measuring device and casing and pipe has been alleviated or avoided
It rubs between road, avoids therefore causing to wear, while can guarantee that the relative position of measuring device and pipeline is accurate.
8, casing interior conduit cathodic protection detection device, the pipeline that can not only be applied in casing, also can be realized it
He is mounted on the cathodic protection prison detection of restricted clearance interior conduit, such as in the pipeline of directional drilling crossing section, detection device is fixed
It is laid on main pipeline in company with main pipeline, or is individually laid in main pipeline side together, to realize to directional drilling crossing section
The prison of pipeline cathode protection situation detects.
Detailed description of the invention
Fig. 1 is the side sectional view of measurement pipe；
Fig. 2 is the longitudinal sectional view of measurement pipe；
Fig. 3 is that multiple and measurement pipe when being equipped with reinforcing rib side partial sectional view is arranged in measuring section；
Fig. 4 is the longitudinal sectional view of measurement pipe when being equipped with reinforcing rib；
Fig. 5 is that measurement pipe is mounted on the cross-sectional side structure chart in casing；
Fig. 6 is that measurement pipe is mounted on the facing structure figure in casing；
Fig. 7 is the schematic diagram of measurement pipe installation；
In above each figure: 1, casing；2, pipeline；3, measurement pipe；31, measuring section；32, linkage section；4, reference electrode；5, it tries
Piece；51, the first test piece；52, the second test piece；6, installing port；7, insulated enclosure filler；8, insulating carriage；81, connectivity slot；9,
Reinforcing rib；11, construction hole；12, conducting wire.
Specific embodiment
In the following, the present invention is specifically described by illustrative embodiment.It should be appreciated, however, that not into one
In the case where step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiments
In.
In the description of the present invention, it should be noted that the instruction such as term "inner", "outside", "upper", "lower", "front", "rear"
Orientation or positional relationship be positional relationship based on the figure, be merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.In addition, term " first ", " second ", " third " are used for description purposes only, and cannot manage
Solution is indication or suggestion relative importance.
As shown in Figures 1 to 6, the present invention provides a kind of casing interior conduit cathodic protection detection device, for in casing 1
Current potential on pipeline 2 is detected, to obtain the cathode protecting state of 1 interior conduit 2 of casing.
Casing interior conduit cathodic protection detection device includes the measurement pipe 3 being made of insulating material, and is equipped in measurement pipe 3
Reference electrode 4 and test piece 5.
Installing port 6 is provided on the tube wall of measurement pipe 3, reference electrode 4 and test piece 5 are mounted on corresponding installing port 6, with
Make the medium outside 5 contact measurement pipe 3 of reference electrode 4 and test piece.
The outer end of reference electrode 4 and the outer end of test piece 5 are recessed inwardly both with respect to corresponding installing port 6, to avoid
Reference electrode 4 and test piece 5 are protruded outward relative to the tube wall of measurement pipe 3, are prevented reference electrode 4 and test piece 5 from contacting pipeline 2, are prevented
Only reference electrode 4 and test piece 5 contact casing 1, avoid reference electrode 4 and pipeline 2 from overlapping, pipeline 2 is avoided to pass through test piece 1 and casing
1 overlap joint, so as to accurately detect the electrical potential information of pipeline.
Measurement pipe 3 is mounted in the clearance space between casing 1 and pipeline 2, and reference electrode 4 and test piece 5 pass through conducting wire
12 are connected with measuring terminals.
After casing 1 and pipeline 2 are buried for a long time, underground water or soil can enter and partly or entirely full of casing 1 and
In clearance space between pipeline 2, when as electrolyte underground water or soil submerged and installed between casing 1 and pipeline 2
After measurement pipe 3, measuring terminals can measure the energization current potential on pipeline 2 by reference electrode 4.
Measuring terminals are electrically connected with pipeline 2, and are provided with switch, with control be electrically connected between test piece 5 and pipeline 2 it is logical
It is disconnected, the connection between test piece 5 and pipeline is disconnected after test piece 5 sufficiently polarizes, and is delayed after a period of time, measuring terminals pass through measurement
Potential difference between reference electrode 4 and test piece 5 obtains the switch-off potential of pipeline 2.
Reference electrode 4 and test piece 5 are fixed in measurement pipe 3, can be avoided with the contact of casing 1 and pipeline 2, can make to join
The accurate location in casing 1 can be located at than electrode 4 and test piece 5, while guaranteeing relative position between reference electrode 4 and test piece 5
Accurately.
In order to guarantee reference electrode 4 and test piece 5 non-working surface insulation, insulated enclosure filler is filled in measurement pipe 3
7, the non-working surface of reference electrode 4 and test piece 5 is respectively positioned in insulated enclosure filler 7.
Insulated enclosure filler 7 is existing insulation filling material, non-the present application point.
The position that insulated enclosure filler 7 enables reference electrode 4 to only have at installing port 6 connects with the outer medium of measurement pipe 3
Touching, remaining position are isolated by measurement pipe 3 and insulated enclosure filler 7 that insulating materials is constituted, prevent reference electrode 4 from failing.
Test piece 5 also is located in insulated enclosure filler 7, and the position being only located at installing port 6 can be with the outer medium of measurement pipe 3
Contact, remaining position are isolated by measurement pipe 3 and insulated enclosure filler 7 that insulating materials is constituted, prevent test piece 5 from failing.
In addition insulated enclosure filler 7 can increase reference electrode 4 and test piece 5 fastness fixed in measurement pipe 3, guarantee
The relative position of reference electrode 4 and test piece 5 is fixed, while preventing reference electrode 4 and test piece 5 from overlapping, and test piece 5 is avoided to fail.
In order to obtain more, more accurate potential data, the test piece 5 installed in measurement pipe 3 includes the first test piece 51 and the
Two test pieces 52.
First test piece 51 and the second test piece 52 are located at 4 two sides of reference electrode, and the spacing phase between reference electrode 4
Together.
In specific application, the first test piece 51 and the second test piece 52 can respectively using, be used in combination or be mutually backups, specifically
Usage mode can flexible choice according to actual needs.
When the first test piece 51 is used as cathodic protection potential test piece that can measure when the second test piece 52 is as self-corrosion test piece
Energization current potential, switch-off potential and the corrosion potential at the position.When the first test piece 51 and the second test piece 52 are all used as cathodic protection
When current potential test piece, reference electrode 4 can measure two groups of energization current potentials and switch-off potential at the position by two test pieces, these
Detection data is conducive to improve the accuracy of casing interior conduit cathode protecting state detection.
When the length of casing 1 is longer, in order to which the cathode protecting state to each position in 1 interior conduit 2 of casing is examined
It surveys, measurement pipe 3 is divided for measuring section 31 and linkage section 32, and measuring section 31 is arranged multiple, and reference electrode 4 and test piece 5 are located at measuring section
In 31, adjacent measuring section 31 is connected by linkage section 32.
The end of measuring section 31 can be directly sleeved on the end of linkage section 32, and the end of linkage section 32 can also be sleeved on survey
On the end for measuring section 31.As shown in figure 3, casing connection can also be passed through between measuring section 31 and the end of connecting pin 32.
Alternately it is connected by measuring section 31 with linkage section 32, makes that there is reference electrode 4 and the measuring section of test piece 5 31 to be distributed in
Each position in 2 axial direction of pipeline, so that potentiometric detection is carried out to each position on 2 length direction of pipeline, to accurately survey
The cathode protecting state of the axial each position of pipeline 2 is obtained, so as to adequately be monitored to entire pipeline 2.
In addition, measurement pipe 3 is divided for multistage, reduce every section of length, to reduce the difficulty of processing and manufacturing, reduce at
This.
Pipeline 2 and casing 1 overlap in order to prevent, prevent electric current on pipeline 2 to be lost to casing 1, avoid therefore causing pipeline 2
Cathodic protection failure, be provided with insulating carriage 8 in the clearance space between casing 1 and pipeline 2.
Insulating carriage 8 is made of insulating material, and in a ring or tubular, is sleeved on pipeline 2.
In order to avoid the obstruction laid to measurement pipe 3, while measurement pipe 3 is formed and is supported, 8 company of being provided with of insulating carriage
Through-hole or connectivity slot 81.
The measurement pipe 3 being mounted in casing 1 passes through intercommunicating pore or connectivity slot 81, to pass through insulating carriage 8, makes to measure
Pipe 3 can extend to each position in casing 1.
Measurement pipe 3 can be fixed on pipeline radial direction some by the intercommunicating pore or connectivity slot 81 on insulating carriage 8 simultaneously
Determining position is prevented when pipeline 2 to be sent into casing 1, and 3 relative duct size radial position of measurement pipe changes.
In order to further increase the accuracy of pipeline cathode protection state-detection, 2 top of pipeline, lower section and the left and right sides
It is provided with measurement pipe 3.
Measurement pipe 3 can arrange as needed in each main angle position of 2 circumferencial direction of pipeline, thus outside to pipeline 2
Each position carries out potentiometric detection on wall circumference, can sufficiently reflect the cathode protecting state of pipeline 2.
In addition, the electrolyte such as soil, underground water are the clearance spaces being gradually filled between casing 1 and pipeline 2 from bottom to top
, lower part, middle part and the top that aforesaid way can be such that measurement pipe 3 is distributed in casing 1.
When soil or underground water are full of the lower part of clearance space, the measurement pipe 3 positioned at 1 lower part of casing submerge soil or
In underground water, the reference electrode of measurement pipe 3 can detect the current potential on pipeline 2 by soil or underground water.
And the reference electrode 4 for being located at the measurement pipe 3 at casing top and middle part not in contact with soil or underground water, in detection pipe 3
It can not detect electrical potential information.
Therefore, can electrical potential information be detected by each measurement pipe 3, can learns and enters soil or underground in casing 1
The entrance situation of water.
Caused by generating electrochemical corrosion after mainly contacting with electrolyte such as soil, underground water as the corrosion of pipeline 2,
So learn the entrance situation for entering soil or underground water in 1 inner sleeve 1 of casing, it also being capable of each portion of 2 upper, middle and lower of reacting pipe
The corrosion condition divided.
Measurement pipe 3 is broken in order to prevent, and reinforcing rib 9 is equipped in measurement pipe 3, and 9 both ends of reinforcing rib reach casing 1
Outside.
Reinforcing rib 9 is supported measurement pipe 3, prevents or mitigates measurement pipe 3 and occurs bending and deformation, to avoid measurement pipe
3 bending fractures, guarantee its normal use.
Reinforcing rib 9 is fixed on the end cap of 3 end of measurement pipe installation, can not only be formed and be fixed to reinforcing rib 9, while energy
Reinforcing rib 9 is enough set to tense the end cap at 3 both ends of measurement pipe, thus when measurement pipe 3 is divided for multistage, by multistage pipe fitting section pipe fitting
It tenses, measuring section and linkage section is prevented to disconnect, guarantee 3 stable structure of measurement pipe.
When 2 length of casing is larger, when measurement pipe 3 is packed into casing 1 together with pipeline 2, can be pulled from the other side of casing 1
Reinforcing rib 9 pulls the pulling force of reinforcing rib 9, and the resistance that measurement pipe 3 and the friction of casing 1 can be overcome to generate guarantees that measurement pipe 3 is smooth
Companion pipeline 2 it is synchronous across casing 1.In addition, reinforcing rib 9 wears and is fixed in measurement pipe 3, in measurement pipe 3 with pipeline 2 one
When with being packed into casing 1, the frictional force that measurement pipe 3 is generated with casing 1 will be undertaken by reinforcing rib 9, so that measurement pipe 3 be avoided to be broken.
As shown in fig. 7, casing 1 is buried when the measurement pipe 3 as casing interior conduit cathodic protection detection device is installed
It is set to underground, construction hole 11 is excavated in 1 two sides of casing, extend into 1 end of casing in corresponding construction hole 11.
Insulating carriage 8 is fixed on pipeline 2, measurement pipe 3 penetrates into the connectivity slot 81 of the setting of insulating carriage 8,
To which measurement pipe 3 is fixed.
The conducting wire 12 that reference electrode 4 and test piece 4 are connected in measurement pipe 3, is stretched out, and make relative to pipe by 3 one end of measurement pipe
2 end of road is stretched out.
It is axial to push pipeline 2 by the lifting of pipeline 2 and the port of alignment sleeve 1, pipeline 2 is sent by the port of 1 one end of casing
Enter into casing, until 2 end of pipeline is stretched out by the port of 1 other end of casing.At this time insulating carriage 8 and measurement pipe 3 also with
Be installed in casing 1, complete measurement pipe 3 loading.In 3 installation process of measurement pipe, usually not biggish external force makees it
With, measurement pipe 3 will not occur mobile or be broken, and measurement pipe 3 is always positioned in the connectivity slot 81 of insulating carriage 8, thus
It will not move radially, prevent measurement pipe 3 from contacting pipeline 2 and casing 1, avoid friction damage.
After measurement pipe 3 is packed into casing, 12 outer end of conducting wire is drawn to more than ground, conducting wire 12 is enable to connect measuring terminals,
Construction hole 11 is filled and led up.
Claims (10)
1. a kind of casing interior conduit cathodic protection detection device is mounted in the clearance space between casing (1) and pipeline (2),
It is characterised in that it includes the measurement pipe (3) being made of insulating material, the measurement pipe (3) is interior to be equipped with reference electrode (4) and examination
Piece (5)；
On the installing port (6) that the tube wall that the reference electrode (4) and test piece (5) are installed in the measurement pipe (3) is correspondingly arranged,
The outer end of the reference electrode (4) and the outer end of test piece (5) are recessed inwardly both with respect to corresponding installing port (6).
2. casing interior conduit cathodic protection detection device according to claim 1, which is characterized in that the measurement pipe (3)
Interior to be filled with insulated enclosure filler (7), the reference electrode (4) and test piece (5) are respectively positioned in insulated enclosure filler (7).
3. casing interior conduit cathodic protection detection device according to claim 1, which is characterized in that the measurement pipe (3)
The test piece (5) of interior installation includes the first test piece (51) and the second test piece (52), first test piece (51) and the second test piece (52)
Reference electrode (4) two sides are located at, and the spacing between reference electrode (4) is identical.
4. casing interior conduit cathodic protection detection device according to claim 1, which is characterized in that the measurement pipe (3)
It is divided into measuring section (31) and linkage section (32), multiple, the reference electrode (4) and test piece (5) position is arranged in the measuring section (31)
In measuring section (31), adjacent measuring section (31) is connected by linkage section (32).
5. casing interior conduit cathodic protection detection device according to claim 1, which is characterized in that the measurement pipe (3)
The insulating carriage (8) being arranged in the clearance space.
6. casing interior conduit cathodic protection detection device according to claim 5, which is characterized in that the insulating carriage
(8) it is annular, is sleeved on pipeline (2), the insulating carriage (8) is provided with intercommunicating pore or connectivity slot (81), surveys to make
Buret (3) passes through.
7. casing interior conduit cathodic protection detection device according to claim 1, which is characterized in that on the pipeline (2)
Side, lower section and the left and right sides are provided with measurement pipe (3).
8. casing interior conduit cathodic protection detection device according to any one of claims 1 to 7, which is characterized in that described
Reinforcing rib (9) are equipped in measurement pipe (3).
9. casing interior conduit cathodic protection detection device according to claim 8, which is characterized in that the reinforcing rib (9)
It is fixed on the end cap of measurement pipe (3) end installation.
10. a kind of installation method of casing interior conduit cathodic protection detection device, which is characterized in that steps are as follows:
Casing (1) is buried to underground, construction hole (11) is excavated in casing (1) two sides, casing (1) end is made to extend into correspondence
Construction hole (11) in；
Insulating carriage (8) is installed on pipeline (2), any one of claim 1 to 9 detection device is penetrated into insulation
In the connectivity slot (81) of support frame (8) setting, the conducting wire (12) of detection device setting is stretched out relative to pipeline (2) end；
It is axial to push pipeline (2) by pipeline (2) lifting and the port of alignment sleeve (1), by pipeline (2) by casing (1) one end
Port is sent in casing, until pipeline (2) end is stretched out by the port of casing (1) other end；
Conducting wire (12) outer end is drawn to more than ground, construction hole (11) is filled and led up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910673004.9A CN110257834B (en) | 2019-07-24 | 2019-07-24 | Cathode protection detection device for pipeline in sleeve and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910673004.9A CN110257834B (en) | 2019-07-24 | 2019-07-24 | Cathode protection detection device for pipeline in sleeve and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110257834A true CN110257834A (en) | 2019-09-20 |
| CN110257834B CN110257834B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910673004.9A Active CN110257834B (en) | 2019-07-24 | 2019-07-24 | Cathode protection detection device for pipeline in sleeve and installation method thereof |
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| CN (1) | CN110257834B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417627A (en) * | 2021-07-09 | 2021-09-21 | 中国石油天然气股份有限公司 | Method for measuring quality of outer coating of oil field casing pipe |
| CN114855175A (en) * | 2022-04-27 | 2022-08-05 | 北京科技大学 | Traversing transverse dragging type reference electrode system of directional drill |
Citations (7)
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| CN102353628A (en) * | 2011-07-22 | 2012-02-15 | 北京科技大学 | Polarization testing probe and testing method for cathodic protection of underground steel pipelines |
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| CN113417627A (en) * | 2021-07-09 | 2021-09-21 | 中国石油天然气股份有限公司 | Method for measuring quality of outer coating of oil field casing pipe |
| CN113417627B (en) * | 2021-07-09 | 2024-05-28 | 中国石油天然气股份有限公司 | Measuring method for quality of outer coating of oilfield casing |
| CN114855175A (en) * | 2022-04-27 | 2022-08-05 | 北京科技大学 | Traversing transverse dragging type reference electrode system of directional drill |
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| CN110257834B (en) | 2024-05-14 |
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