CN209481802U - A kind of cathodic protection polarized probe - Google Patents

Abstract

The utility model provides a kind of cathodic protection polarized probe, belongs to cathode protection technology field.The probe includes plastic sleeve, ceramic pot and two polarization test pieces.High-purity copper electrode and copper/saturated copper sulphate built in the ceramic pot of internal layer, and be connected by bottom micropore ceramics with the external world.Full of construction materials contract medium is filled out between the plastic sleeve of outer layer and the ceramic pot of internal layer, outer layer stack shell is by being pasted at the aperture of non-woven fabrics and extraneous connection.High-purity copper electrode of two polarization test pieces and internal layer is connected to three lines of three-core cable respectively.The negligible level in engineering that is reduced to can be dropped by the probe in the IR on Measurement channel, and be influenced from stray electrical current, be can be convenient and efficiently measured switch-off potential；Leakage is easy caused by old-fashioned polarized probe being avoided because of the problems such as material, structure, the various problems such as the service life is difficult to ensure, it is more stable and reliable.

Description

A kind of cathodic protection polarized probe

Technical field

The utility model relates to cathode protection technology fields, particularly relate to a kind of cathodic protection polarized probe.

Background technique

Cathodic protection is to prevent the structures such as steel pipe from corroding and the technology that is widely used, and the measurement of polarization potential is Implement the most important control parameter of this technology.Polarization potential is quickly measured for convenience, in addition to buried type long-acting reference electrode, Usually it also will use portable reference electrode, the current potential of the monitoring point for measuring not embedded long-acting reference electrode.Portable ginseng It is more easy to carry than electrode, it using simple, is used cooperatively, has for the control debugging of cathodic protection system important with long-acting reference Effect.However, no matter using long-acting reference electrode or portable reference electrode, conventional method measures the polarization of buried structures All it can cause error because inevitable IR drops when current potential.Power-off measurement can eliminate the error, but in engineering, power-off is surveyed Amount is because of inconvenience, it is difficult to implement.

IR drop size in pipeline potential measurement is mainly had: soil resistivity, reference electrode position by compared with multifactor impact It sets, resistance, coating capacitive reactance, induction reactance etc. at cathodic protection current, holiday.Geographical environment locating for domestic buried steel pipe is multiple Miscellaneous changeable, pipeline anticorrosion coating quality is different, therefore different pipelines, same pipeline different pipe sections, same pipeline section different time IR drop be also not quite similar, but IR drops with the relativeness of each influence factor without being explicitly indicated, to various in country, professional standard The erosion resistant coating size that IR drops under circumstances is also without related data, accordingly, it is difficult to rule of thumb directly judge pipeline IR drop Size.

It needs to eliminate using power-off mensuration thus, but power-off measurement often can be difficult to reality because many inconvenient in engineering It applies, such as: it, cannot be to be multiple frequent " power-off " by stake measurement when impressed current cathodic protection, and sacrificial anode protection is because of nothing The line of all off anode of method and pipeline can not then power off measurement at all.And electrometric important prerequisite of breaking is no stray electrical It drains off and disturbs, when thering is stray electrical current to interfere or causing to generate local macro cell by deficiency of protection coating difference, even if using power-off method Also it is difficult to measure true pipeline polarization potential.

Based on the above reasons, polarized probe (can be ignored since the IR drop on Measurement channel can be made to reduce to minimum in engineering Disregard) and do not influenced completely by clutter interference electric current and be convenient to implement power-off measurement, start gradually to be received by people. However, being affected by thermal expansion and contraction larger, there are certain hidden danger for leakproofness, it is difficult to protect since polarized probe main body is PVC material Card is steady in a long-term to be used.Therefore, polarized probe material and structure how are improved, better performance and stability are made it have, It has broad application prospects in later cathodic protection engineering.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of cathodic protection polarized probes.

The probe includes plastic sleeve, ceramic pot and polarization test piece, and plastic sleeve is located at outer probe, and ceramic pot is located at interior Layer, there are two the test pieces that polarizes, and is located at probe two sides；High-purity copper electrode and copper/saturated copper sulphate built in the ceramic pot of internal layer, pottery Porcelain jar is connected by bottom micropore ceramics with the external world；It is full of between the plastic sleeve of outer layer and the ceramic pot of internal layer and fills out construction materials contract Jie The plastic sleeve stack shell of matter, outer layer is in communication with the outside by being pasted at the aperture of non-woven fabrics；Two polarization test pieces and ceramic pot Interior high-purity copper electrode is separately connected three lines of three-core cable.

Wherein, plastic sleeve and ceramic pot are concentric drums.

It is provided with four on plastic sleeve side and discharges into water hole, often discharges into there are three water holes.There are three being opened on plastic sleeve pedestal Equidistant inlet opening.It is bonded at inlet opening with non-woven fabrics.

Two polarization test pieces are installed on above plastic sleeve side at one third position.

The above-mentioned technical proposal of the utility model has the beneficial effect that:

In above scheme, there is good structure novel, stability, firm reliable, long service life, convenient for answering in engineering site The advantages that using.It, which is not necessarily to interrupt protection power source, can be obtained the current potential of no IR drop, can effectively eliminate due to there are soil IR drop, Potential errors caused by the factors such as stray electrical current can be detected accurately by the protection potential value on protection structures.With knot The advantages that structure is novel, design is reasonable meets polarized probe test required function.

Detailed description of the invention

Fig. 1 is the cathodic protection polarized probe structural schematic diagram of the utility model；

Fig. 2 is that cathodic protection polarized probe uses schematic diagram in the utility model embodiment.

Wherein: 1- cathodic protection polarized probe；2- plastic sleeve；3- ceramic pot；4- polarization test piece；The high-purity copper electrode of 5-； 6- copper/saturated copper sulphate；7- fills out construction materials contract medium；8- three-core cable；9- bonding jumper；10- test pile；11- pipeline；12- reference tube.

Specific embodiment

In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing And specific embodiment is described in detail.

The utility model provides a kind of cathodic protection polarized probe, as shown in Figure 1, the probe includes plastic sleeve 2, ceramics Tank 3 and polarization test piece 4, plastic sleeve 2 are located at outer probe, and ceramic pot 3 is located at internal layer, polarize there are two test pieces 4, are located at Probe two sides；High-purity copper electrode 5 and copper/saturated copper sulphate 6 built in the ceramic pot 3 of internal layer, ceramic pot 3 by bottom micropore ceramics with The external world is connected；It is full of between the plastic sleeve 2 of outer layer and the ceramic pot 3 of internal layer and fills out construction materials contract medium 7, the plastic sleeve of outer layer 2 Body is in communication with the outside by being pasted at the aperture of non-woven fabrics；High-purity copper electrode 5 in two polarization test pieces 4 and ceramic pot 3 divides Not Lian Jie three-core cable 8 three lines.Three lines are eventually introduced on the corresponding position of cathodic protection test pile.

Plastic sleeve 2 and ceramic pot 3 are concentric drums.

Four are provided on 2 side of plastic sleeve and discharges into water hole, are often discharged into there are three water holes.Three are provided on 2 pedestal of plastic sleeve A equidistant inlet opening.It is bonded at inlet opening with non-woven fabrics.Guarantee that liquid can be maintained at original by filling out construction materials contract medium Position.

Two polarization test pieces 4 are installed on above 2 side of plastic sleeve at one third position.

It is explained combined with specific embodiments below.

As depicted in figs. 1 and 2, cathodic protection polarized probe 1 is before use, must impregnate in water 24 hours or more can make With impregnating liquid level should avoid polarization test piece 4 from contacting when impregnating with water between polarization test piece 4 and the top hole；

The mode of connection of the three-core cable 8 of cathodic protection polarized probe in test pile 10 is that blue line is connected to right test piece End, red line connect 11 end of cathodic protection pipeline, and black line connects 12 end of reference tube.Wherein red line passes through bonding jumper 9 and pipeline 11 Connection.11 above earth potential of pipeline is generally between -0.85V~-1.2V；

Cathodic protection polarized probe 1 is embedded in around pipeline 11 within the scope of 0.5 meter, modes of emplacement be tiltedly put, and by its Surrounding is covered with fine earth；

About 1.5 meters of long reference tubes 12, reference tube 12 and test pile 10 are buried above cathodic protection polarized probe 1 Surrounding with soil filling consolidation, pours into water by reference tube 12 after filling to keep polarized probe surrounding soil to moisten.

After being mounted with the utility model cathodic protection polarized probe 1, without interrupting the cathodic protection system being currently running, i.e., It can get the polarization potential of pipeline, it can be effectively eliminated due to caused by the factors such as existing soil IR drop, stray electrical current Potential errors can accurately detect the protection potential value protected on structures.

The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement It also should be regarded as the protection scope of the utility model with retouching.

Claims (6)

1. a kind of cathodic protection polarized probe, it is characterised in that: including plastic sleeve (2), ceramic pot (3) and test piece (4) are polarized, Plastic sleeve (2) is located at outer probe, and ceramic pot (3) is located at internal layer, and there are two polarization test piece (4), is located at probe two sides； High-purity copper electrode (5) and copper/saturated copper sulphate (6) built in the ceramic pot (3) of internal layer, ceramic pot (3) is by bottom micropore ceramics and outside Boundary is connected；It is full of between the plastic sleeve (2) of outer layer and the ceramic pot (3) of internal layer and fills out construction materials contract medium (7), the plastic sleeve of outer layer (2) stack shell is in communication with the outside by being pasted at the aperture of non-woven fabrics；It is high-purity in two polarization test piece (4) and ceramic pot (3) Copper electrode (5) is separately connected three lines of three-core cable (8).

2. cathodic protection polarized probe according to claim 1, it is characterised in that: the plastic sleeve (2) and ceramic pot It (3) is concentric drums.

3. cathodic protection polarized probe according to claim 1, it is characterised in that: opened on plastic sleeve (2) side There are four to discharge into water hole, often discharges into there are three water holes.

4. cathodic protection polarized probe according to claim 1, it is characterised in that: opened on plastic sleeve (2) pedestal There are three equidistant inlet openings.

5. cathodic protection polarized probe according to claim 1, it is characterised in that: described two polarization test piece (4) installations Above plastic sleeve (2) side at one third position.

6. cathodic protection polarized probe according to claim 3 or 4, it is characterised in that: use non-woven fabrics at the inlet opening Bonding.