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CN-117448832-B - Natural gas pipeline cathode protection and external corrosion monitoring device

CN117448832BCN 117448832 BCN117448832 BCN 117448832BCN-117448832-B

Abstract

The invention relates to a cathode protection and external corrosion monitoring device for a natural gas pipeline, which comprises a monitoring probe, a pipeline fastener, a bottom plate, a top plate and a locking piece, wherein the pipeline fastener is used for being fixed on the natural gas pipeline, the bottom plate is horizontally arranged at the upper end of the pipeline fastener, the top plate is horizontally arranged at the upper end of the monitoring probe, two sides of the upper end of the bottom plate are respectively provided with a baffle plate which is parallel to each other, the monitoring probe is arranged at the upper end of the bottom plate and is positioned between the baffles at the two sides, and the locking piece is detachably connected with the baffle plate and the top plate and is used for locking the baffle plate and the top plate. The monitoring probe has the advantages that the structural design is simple and reasonable, the monitoring probe can be quickly disassembled, the positioning effect of the monitoring probe in the installation process can be realized, the problem that a great number of bolts are required to be disassembled one by a user when the monitoring probe needs to be replaced is avoided, the replacement efficiency of the monitoring probe by the user is improved, the time and the labor are saved, and the accuracy of the monitoring probe on pipeline monitoring data is improved.

Inventors

  • CUI DI
  • GAO LING
  • LIU YINHUA
  • HU PAN

Assignees

  • 国家石油天然气管网集团有限公司
  • 国家石油天然气管网集团有限公司西气东输分公司

Dates

Publication Date
20260505
Application Date
20231027

Claims (8)

  1. 1. The device for monitoring the cathode protection and the external corrosion of the natural gas pipeline is characterized by comprising a monitoring probe (1), a pipeline fastener (2), a bottom plate (21), a top plate (22) and a locking piece (3), wherein the pipeline fastener (2) is used for being fixed on the natural gas pipeline, the bottom plate (21) is horizontally arranged at the upper end of the pipeline fastener (2), the top plate (22) is horizontally arranged at the upper end of the monitoring probe (1), two sides of the upper end of the bottom plate (21) are respectively provided with baffle plates (23) which are parallel to each other, the monitoring probe (1) is arranged at the upper end of the bottom plate (21) and positioned between the baffle plates (23) at the two sides, the locking piece (3) is detachably connected with the baffle plates (23) and the top plate (22) and is used for locking the baffle plates (22), the locking piece (3) is provided with two sides which are distributed at the two sides of the top plate (22), the two groups of the locking piece (3) are respectively used for locking the side ends of the top plate (22) and the baffle plates (23) at the corresponding sides, the lower ends (24) are respectively provided with positioning posts (24) which extend downwards, the lower ends (24) are respectively provided with the connecting posts (24), two baffle (23) one side that keeps away from each other is equipped with respectively with two connecting block (26) of reference column (25) one-to-one, connecting block (26) upper end be equipped with jack (261) of reference column (25) adaptation, the lower extreme of reference column (25) inserts in jack (261) of corresponding connecting block (26), and pass through respectively retaining member (3) with connecting block (26) locking.
  2. 2. The device for cathodic protection and external corrosion monitoring of a natural gas pipeline according to claim 1, wherein the connecting block (26) is slidably mounted at the upper end of the bottom plate (21) and can slide along a direction perpendicular to the baffle plate (23), a screw hole (262) penetrating through two ends of the connecting block is formed in the connecting block (26), the screw hole (262) penetrates through the insertion hole (261), positioning holes (251) penetrating through two sides of the lower end of the positioning column (25) are formed in the lower end of the positioning column, the locking piece (3) is a bolt matched with the screw hole (262), and after the lower end of the positioning column (25) is inserted into the insertion hole (261), the locking piece (3) is used for penetrating through the screw hole (262) and the positioning hole (251) and is in threaded connection with the baffle plate (23) on the corresponding side.
  3. 3. The device for cathode protection and external corrosion monitoring of natural gas pipelines according to claim 2, wherein a base (27) is fixed at the middle part of one side, which is relatively far away from the two baffles (23), a plurality of horizontal connecting plates (271) are fixed on the outer vertical surface of the base (27), the connecting plates (271) are distributed at intervals up and down, a plurality of connecting grooves (263) which are in one-to-one correspondence with the connecting plates (271) are arranged at one end of the connecting block (26), and the connecting plates (271) respectively extend into the corresponding connecting grooves (263).
  4. 4. A natural gas pipeline cathodic protection and external corrosion monitoring device according to claim 3, wherein one end of said connecting block (26) is connected to said baffle (23) on the corresponding side by means of an elastic member (264).
  5. 5. The device for cathodic protection and corrosion monitoring of natural gas pipelines according to claim 4, wherein said elastic member (264) is a spring, one end of said connecting block (26) is provided with a blind hole having a diameter larger than that of said screw hole (262), said blind hole is coaxially distributed with said screw hole (262), one end of said elastic member (264) is connected with said baffle plate (23) on the corresponding side, and the other end thereof extends into said blind hole.
  6. 6. The device for cathodic protection and corrosion monitoring of natural gas pipelines according to claim 4, wherein said positioning posts (25) each extend obliquely downward toward the outer side of said baffle plate (23) on the corresponding side, and said corresponding insertion holes (261) are inclined holes adapted to said positioning posts (25).
  7. 7. The device for cathodic protection and external corrosion monitoring of natural gas pipelines according to claim 1, wherein the two sides of the monitoring probe (1) are respectively provided with a limiting protection structure (11) for preventing displacement of the monitoring probe.
  8. 8. The device for cathodic protection and external corrosion monitoring of a natural gas pipeline according to claim 7, wherein the limiting protection structure (11) comprises limiting convex blocks vertically arranged at the middle parts of two sides of the monitoring probe (1), wherein limiting sliding grooves (231) vertically extending along are respectively formed in the middle parts of one sides, close to each other, of the baffle plates (23) on two sides, and the limiting convex blocks are respectively embedded into the corresponding side of the limiting sliding grooves (231).

Description

Natural gas pipeline cathode protection and external corrosion monitoring device Technical Field The invention relates to the technical field of pipeline monitoring, in particular to a natural gas pipeline cathode protection and external corrosion monitoring device. Background Cathodic protection is one of electrochemical protection techniques, and its principle is to apply an external current to the surface of a corroded metal structure, where the structure is to be protected as a cathode, so that electron migration caused by metal corrosion is inhibited, and corrosion is avoided or reduced. The protection of natural gas pipeline adopts cathodic protection device mostly, in order to conveniently implement the control to natural gas pipeline, generally installs monitoring probe on the pipeline in the monitoring device, is convenient for realize real-time supervision to the pipeline condition. In China patent with publication number CN205688015U, a pipeline cathodic protection and external corrosion rate monitoring probe is disclosed, corrosion section current connecting wires and corrosion section voltage connecting wires are connected to a corrosion section, reference section voltage connecting wires and reference section and corrosion section voltage measurement common connecting wires are connected to realize measurement of a reference section test piece voltage value, the corrosion section voltage connecting wires and reference section and corrosion section voltage measurement common connecting wires are connected to realize measurement of a corrosion section test piece voltage value, the reference section current connecting wires and corrosion section current connecting wires are connected to realize measurement of current, and a resistance method is utilized to realize monitoring of the pipeline corrosion rate. In order to solve the problems, the application provides a cathode protection and external corrosion monitoring device for a natural gas pipeline. Disclosure of Invention The invention aims to provide a natural gas pipeline cathode protection and external corrosion monitoring device, which effectively overcomes the defects of the prior art. The technical scheme for solving the technical problems is as follows: The utility model provides a natural gas pipeline cathodic protection and outer corrosion monitoring devices, including monitor probe, pipeline fastener, bottom plate, roof and retaining member, above-mentioned pipeline fastener is used for fixing on natural gas pipeline, above-mentioned bottom plate horizontal installation is in above-mentioned pipeline fastener upper end, above-mentioned roof horizontal installation is in above-mentioned monitor probe upper end, above-mentioned bottom plate upper end both sides are equipped with the baffle that is parallel to each other respectively, above-mentioned monitor probe is arranged in above-mentioned bottom plate upper end to be located between the above-mentioned baffle of both sides, above-mentioned retaining member can dismantle with above-mentioned baffle and roof and be connected for locking above-mentioned baffle and roof. On the basis of the technical scheme, the invention can be improved as follows. Further, the locking members are provided with two sides and distributed on two sides of the top plate, and the two groups of locking members are respectively used for locking the side ends of the top plate and the baffle plates on the corresponding sides. Further, the lower extreme at the middle part of both sides of above-mentioned roof is equipped with the spliced pole respectively, and the lower extreme of above-mentioned spliced pole is equipped with downwardly extending's reference column respectively, and one side that two above-mentioned baffles kept away from each other is equipped with the connecting block with two above-mentioned reference column one-to-one respectively, and above-mentioned connecting block upper end is equipped with the jack with the adaptation of above-mentioned reference column, and the lower extreme of above-mentioned reference column inserts in the jack of corresponding above-mentioned connecting block to lock with above-mentioned connecting block through above-mentioned retaining member respectively. Further, the connecting block is slidably mounted at the upper end of the bottom plate and can slide along the direction perpendicular to the baffle, a screw hole penetrating through two ends of the connecting block is formed in the connecting block, the screw hole penetrates through the insertion hole, positioning holes penetrating through the connecting block are formed in two sides of the lower end of the positioning column, the locking piece is a bolt matched with the screw hole, and after the lower end of the positioning column is inserted into the insertion hole, the locking piece is used for penetrating through the screw hole and the positioning hole and is in threaded connection with the baffle on the c