CN214655255U

CN214655255U - Coupling-proof protection equipment for oil and gas pipeline

Info

Publication number: CN214655255U
Application number: CN202121103892.XU
Authority: CN
Inventors: 马延芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-11-09
Anticipated expiration: 2031-05-21

Abstract

The utility model discloses a coupling-proof protection device for oil and gas pipelines in the technical field of pipeline protection devices, which comprises a pipeline body, a shielding ground wire and a buried base, wherein the pipeline body, the shielding ground wire and the buried base are all buried in soil, the shielding ground wire is positioned below the pipeline body, the pipeline body is positioned below the buried base, and the top of the buried base is provided with a support component; the utility model discloses a shielding ground wire, bury ground base, supporting component, solid-state decoupling ware, return bend, the setting of anodal wire and negative pole wire, can protect the pipeline negative pole, reduce circuit fault, with its life of extension, and this protective apparatus adopts the setting of polylinker, can enlarge protection area, thereby reached the function of single plant maintenance multirow stream point, the alternating current interference voltage who avoids keeping away from stream point position risees, the erection of equipment has been reduced, the effectual cost of having controlled.

Description

Coupling-proof protection equipment for oil and gas pipeline

Technical Field

The utility model relates to a pipeline protective equipment technical field specifically is coupling protective equipment is prevented to oil gas pipeline.

Background

In oil (gas) conveying pipeline systems in the petroleum and petrochemical industry, because of the requirements of pipeline protection and cathodic protection, an insulating layer with a certain thickness is coated on the conveying pipeline, and the thickness of the insulating layer is usually not more than 20 mm. Due to the existence of the insulating layer, induced electromotive force and overvoltage are generated on the pipeline (storage tank) by current through space induction (mutual inductance coupling), voltage through space static induction (capacitance coupling) and ground current coupling (resistance coupling). The induced electromotive force and overvoltage can cause electrochemical corrosion to the pipeline, accelerate the damage of the pipeline, damage equipment (particularly a cathode protection device) connected with the pipeline due to overvoltage, damage to an insulating layer of the pipeline and endanger personal safety.

The document with the patent application number of (200820066755.1 oil and gas transmission pipeline protection device) has the functions of alternating current interference and alternating current corrosion protection, and meanwhile, high voltage generated by lightning can be eliminated, so as to protect an insulating layer of a pipeline, but in practice, preliminary research on the action distance of the protection device discovers that a single protection device can reduce alternating current interference voltage near a drainage point, but can enable alternating current interference voltage far away from the drainage point to rise, partial pipe sections even rise greatly, therefore, a plurality of protection devices need to be set according to a certain distance in order to prevent the voltage from rising far away from the drainage point, and the production and installation cost is undoubtedly increased.

Based on this, the utility model designs a coupling protective equipment is prevented to oil gas pipeline to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a coupling protective equipment is prevented to oil gas pipeline to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the oil and gas pipeline coupling prevention protection device comprises a pipeline body, a shielding ground wire and a buried base, wherein the pipeline body, the shielding ground wire and the buried base are buried in soil, the shielding ground wire is positioned below the pipeline body, the pipeline body is positioned below the buried base, and a support assembly is arranged at the top of the buried base;

the supporting assembly comprises a base, a supporting column is welded to the top of the base, an explosion-proof box is welded to the top of the supporting column, a mounting frame is fixedly mounted on the back of an inner cavity of the explosion-proof box, wire pipes are fixedly mounted at the front end and the rear end of the bottom of the explosion-proof box, a solid-state decoupling device is fixedly mounted on the front face of the mounting frame, bent pipes are embedded in the front face and the back face of the buried base, one end of each bent pipe penetrates through the buried base and extends to the upper side of the buried base, and the wire pipes and the bent pipes are arranged in a matched mode;

and the positive electrode of the solid decoupling device is fixedly provided with a positive electrode lead, the negative electrode of the solid decoupling device is fixedly provided with a negative electrode lead, the other end of the negative electrode lead is fixedly arranged with the pipeline body, and the other end of the positive electrode lead is fixedly arranged with the shielding ground wire.

Preferably, three positive electrodes and three negative electrodes of the solid-state decoupling device are arranged, and the three positive electrode leads are distributed on the surface of the pipeline body at equal intervals.

Preferably, the negative electrode lead and the positive electrode lead are arranged in the same way, and both the negative electrode lead and the positive electrode lead are composed of a wire core and an insulating sleeve.

Preferably, the front of the explosion-proof box is provided with an access hole, the front of the explosion-proof box is bolted with an access door, and the access door covers the surface of the access hole.

Preferably, the two sides of the buried base are fixedly provided with anti-tilting plates, and the surfaces of the anti-tilting plates are fixedly provided with anti-stopping plates.

Preferably, the both sides of burying the ground base all inlay and be equipped with the metal block, the top threaded connection of base has the gim peg, the bottom of gim peg runs through the base in proper order, buries ground base and metal block and extends to the inner chamber of metal block, the surface of gim peg and the inner wall threaded connection of metal block.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a shielding ground wire, bury ground base, supporting component, solid-state decoupling ware, the return bend, the setting of positive wire and negative pole wire, can protect the pipeline negative pole, reduce circuit fault, with prolong its life, and can also effectively get rid of the electric current that is not conform to cathodic protection, eliminate stray current, can also prevent the thunder and lightning, bad weather such as thunderstorm damage to the pipeline, and this protective apparatus adopts the setting of polylinker, can enlarge protection area, thereby the function of single plant maintenance multirow current point has been reached, the alternating current interference voltage who avoids keeping away from current drainage point position risees, the erection of equipment has been reduced, the effectual cost of having controlled.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial left side sectional view of the buried base of the present invention;

FIG. 3 is a partial left side sectional view of the explosion-proof box of the present invention;

fig. 4 is a schematic perspective view of the solid-state decoupling device of the present invention;

fig. 5 is a partial sectional view of the positive electrode lead of the present invention;

fig. 6 is a partially enlarged view of a portion a in fig. 1 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-pipeline body, 2-shielding ground wire, 3-buried base, 4-support component, 41-base, 42-pillar, 43-explosion-proof box, 44-mounting rack, 45-wire tube, 5-solid-state decoupler, 6-elbow, 7-positive wire, 8-negative wire, 9-access door, 10-anti-tilt plate, 11-anti-tilt plate, 12-metal block and 13-fixing bolt.

Detailed Description

The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Example one

Referring to the drawings, the utility model provides a technical scheme: the anti-coupling protection device for the oil and gas pipeline comprises a pipeline body 1, a shielding ground wire 2 and a buried base 3, wherein the pipeline body 1, the shielding ground wire 2 and the buried base 3 are all buried in soil, the shielding ground wire 2 is positioned below the pipeline body 1, the pipeline body 1 is positioned below the buried base 3, and a support component 4 is arranged at the top of the buried base 3;

the supporting component 4 comprises a base 41, a pillar 42 is welded at the top of the base 41, an explosion-proof box 43 is welded at the top of the pillar 42, a mounting frame 44 is fixedly mounted at the back of an inner cavity of the explosion-proof box 43, wire pipes 45 are fixedly mounted at the front end and the rear end of the bottom of the explosion-proof box 43, a solid-state decoupling device 5 is fixedly mounted at the front of the mounting frame 44, bent pipes 6 are embedded at the front and the back of the buried base 3, one ends of the bent pipes 6 penetrate through the buried base 3 and extend to the upper side of the buried base, and the wire pipes 45 and the bent pipes 6 are arranged in a matched mode;

the positive pole of the solid-state decoupling device 5 is fixedly provided with a positive pole lead 7, the negative pole of the solid-state decoupling device 5 is fixedly provided with a negative pole lead 8, the other end of the negative pole lead 8 is fixedly arranged with the pipeline body 1, and the other end of the positive pole lead 7 is fixedly arranged with the shielding ground wire 2.

Specifically, the front of explosion-proof box 43 is provided with an access hole, the front of explosion-proof box 43 is bolted with access door 9, and access door 9 covers the surface of the access hole.

Specifically, both sides of the buried base 3 are fixedly provided with an anti-tilt plate 10, and the surface of the anti-tilt plate 10 is fixedly provided with a check plate 11.

Specifically, the metal blocks 12 are embedded in the two sides of the buried base 3, the fixing bolt 13 is connected to the top of the base 41 through threads, the bottom of the fixing bolt 13 penetrates through the base 41, the buried base 3 and the metal blocks 12 in sequence and extends to the inner cavity of the metal blocks 12, and the surface of the fixing bolt 13 is connected to the inner wall of the metal blocks 12 through threads.

The working principle of the embodiment is as follows: firstly, burying a buried base 3 underground, fixing a support component 4 on the buried base 3 through a fixing bolt 13, then respectively installing a positive lead 7 and a negative lead 8 with the positive and negative poles of a solid-state decoupling device 5, after the installation is finished, penetrating the positive lead 7 and the negative lead 8 through a wire pipe 45 and a bent pipe 6, connecting the positive lead 7 with a shielding ground wire 2, and connecting the negative lead 8 with a pipeline body 1, thus completing the installation work;

in the actual use process, when interference voltage is generated around the pipeline body 1, the solid-state decoupler 5 limits the interference voltage on the pipeline body 1, transfers charges into the shielding ground wire 2, and disperses the charges to the ground from the shielding ground wire 2, in the process, the connection position of the negative electrode lead 8 and the pipeline body 1 is a drainage point, the traditional drainage point basically controls a single drainage point through a single coupler, in the case, the solid-state decoupler 5 is designed with three negative electrodes and three positive electrodes, so that the drainage point is increased, the protection area is enlarged, the function of maintaining multiple drainage points through a single device is realized, the rise of alternating-current interference voltage far away from the drainage point is avoided, the erection of the device is reduced, and the cost is effectively controlled.

Example two

The structure of the present embodiment is substantially the same as that of the first embodiment, except that three positive electrodes and three negative electrodes of the solid-state decoupler 5 are provided, and three positive electrode wires 7 are equidistantly distributed on the surface of the pipe body 1, and since three positive electrodes and three negative electrodes of the solid-state decoupler 5 are provided, the erection of drainage points can be increased, so that the protection range of a single device is increased, and three original drainage points need three sets of devices.

EXAMPLE III

The structure of this embodiment is basically the same as that of the first embodiment, and the difference lies in that the negative electrode lead 8 and the positive electrode lead 7 are arranged in the same way, the negative electrode lead 8 and the positive electrode lead 7 are both composed of a wire core and an insulating sleeve, the wire core material of the negative electrode lead 8 and the positive electrode lead 7 is copper alloy, the conductivity is excellent, when the interference voltage of the drainage point is conveyed, the loss is avoided, the elimination of the interference voltage is more thorough, and the arrangement of the insulating sleeve can effectively protect the negative electrode lead 8 and the positive electrode lead 7, and the corrosion damage of the negative electrode lead 8 and the positive electrode lead 7 is avoided.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Oil gas pipeline prevents coupling protection equipment, including pipeline body (1), shielding ground wire (2) and buried base (3), its characterized in that: the pipeline body (1), the shielding ground wire (2) and the buried base (3) are buried in soil, the shielding ground wire (2) is located below the pipeline body (1), the pipeline body (1) is located below the buried base (3), and a support assembly (4) is arranged at the top of the buried base (3);

the supporting component (4) comprises a base (41), a supporting column (42) is welded at the top of the base (41), an explosion-proof box (43) is welded at the top of the supporting column (42), a mounting frame (44) is fixedly mounted at the back of an inner cavity of the explosion-proof box (43), a wire pipe (45) is fixedly mounted at the front end and the rear end of the bottom of the explosion-proof box (43), a solid decoupling device (5) is fixedly mounted at the front of the mounting frame (44), a bent pipe (6) is embedded at the front and the back of the buried base (3), one end of the bent pipe (6) penetrates through the buried base (3) and extends to the upper side of the buried base, and the wire pipe (45) and the bent pipe (6) are arranged in an adaptive mode;

the pipeline is characterized in that a positive wire (7) is fixedly mounted at the positive electrode of the solid decoupling device (5), a negative wire (8) is fixedly mounted at the negative electrode of the solid decoupling device (5), the other end of the negative wire (8) is fixedly mounted with the pipeline body (1), and the other end of the positive wire (7) is fixedly mounted with the shielding ground wire (2).

2. The oil and gas pipeline coupling prevention protection device according to claim 1, wherein: the three positive electrodes and the three negative electrodes of the solid decoupling device (5) are respectively arranged, and the three positive electrode leads (7) are distributed on the surface of the pipeline body (1) at equal intervals.

3. The oil and gas pipeline coupling prevention protection device according to claim 1, wherein: the negative electrode lead (8) and the positive electrode lead (7) are arranged in the same way, and the negative electrode lead (8) and the positive electrode lead (7) are both composed of a wire core and an insulating sleeve.

4. The oil and gas pipeline coupling prevention protection device according to claim 1, wherein: the front of explosion-proof case (43) has seted up the access hole, access door (9) have been bolted connection to the front of explosion-proof case (43), access door (9) cover is on the surface of access hole.

5. The oil and gas pipeline coupling prevention protection device according to claim 1, wherein: the anti-tilt floor is characterized in that anti-tilt plates (10) are fixedly mounted on two sides of the buried base (3), and anti-tilt plates (11) are fixedly mounted on the surfaces of the anti-tilt plates (10).

6. The oil and gas pipeline coupling prevention protection device according to claim 1, wherein: bury ground both sides of base (3) and all inlay and be equipped with metal block (12), the top threaded connection of base (41) has gim peg (13), the bottom of gim peg (13) runs through base (41), buries ground base (3) and metal block (12) in proper order and extends to the inner chamber of metal block (12), the surface of gim peg (13) and the inner wall threaded connection of metal block (12).