A cathode detection device for oil and gas transmission pipeline

Abstract

The utility model belongs to the technical field of cathode detection of oil and gas transmission pipelines, and specifically relates to a cathode detection device for oil and gas transmission pipelines, comprising: an inverted detection barrel, a hollow installation sleeve is provided at the bottom of the inner side of the detection barrel, a connecting piece, a ring block and a detection mechanism are provided in sequence from the outside to the inside of the installation sleeve, the ring block is installed on the outer wall of the end of the detection mechanism, an installation space for accommodating the ring block is formed between the connecting piece and the installation sleeve, the connecting piece is detachably installed on the installation sleeve, a rubber pad for sealing is sleeved on the detection mechanism, the connecting piece comprises a first clamping ring and a second clamping ring with two semi-arc structures, and the utility model can hide the detection mechanism in the installation sleeve through the connecting piece and the ring block by adding the connecting piece, the ring block and the installation sleeve, so as to avoid the detection mechanism as a whole being in a corrosive environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of cathode detection of oil and gas transmission pipelines, and in particular relates to a cathode detection device for oil and gas transmission pipelines. Background Art

[0002] Long-distance oil and gas pipelines mostly use anti-corrosion coatings and cathodic protection technology to prevent the aging of the anti-corrosion layer. A negative potential is applied to the pipeline by means of a constant potential meter or a sacrificial anode, so that the pipeline forms a cathode to the ground, forming protection and slowing down corrosion. Cathodic protection detection equipment is an indispensable device in the online monitoring system of cathodic protection of oil and gas pipelines, and is mainly used for the detection of cathodic protection effects and operating parameters.

[0003] Existing cathodic protection detection equipment generally consists of a shell, a mounting mechanism and a cathodic protection online monitor. The existing mounting mechanism includes a pipe clamp and fastening bolts. After the cathodic protection online monitor is installed in the shell by means of the pipe clamp and the fastening bolts, the cathodic protection online monitor will be exposed as a whole to the corrosive environment in the shell, causing corrosion in some parts of the cathodic protection online monitor, which greatly reduces the service life of the cathodic protection online monitor. Summary of the invention

[0004] The purpose of the utility model is to provide a cathode detection device for an oil and gas transmission pipeline, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cathode detection device for an oil and gas transmission pipeline, comprising: an inverted detection barrel, a hollow mounting sleeve is provided at the bottom of the inner side of the detection barrel, a connecting piece, a ring block and a detection mechanism are provided in the mounting sleeve from the outside to the inside, the ring block is installed on the outer wall of the end of the detection mechanism, an installation space for accommodating the ring block is formed between the connecting piece and the mounting sleeve, and the connecting piece can be detachably installed on the mounting sleeve.

[0006] Preferably, a rubber pad for sealing is sleeved on the detection mechanism, and the rubber pad is arranged between the ring block and the mounting sleeve.

[0007] Preferably, the connecting member includes a first clamp ring and a second clamp ring with two semi-arc structures, and four mounting seats are distributed in a circular array on the outer wall of the mounting sleeve. The first clamp ring and the second clamp ring are each provided with two mounting holes that extend to the corresponding mounting seats, and a plurality of fastening bolts are provided above the first clamp ring and the second clamp ring, which are respectively screwed into the mounting holes.

[0008] Preferably, two positioning grooves are formed on one side of the first clamp ring and the second clamp ring close to the mounting sleeve, positioning blocks are welded around the ring block, and one end of the four positioning blocks extends into the positioning grooves respectively.

[0009] Preferably, the detection mechanism includes a cathodic protection online monitor and a cable electrically connected to the cathodic protection online monitor, the ring block is arranged on the outer wall of the end of the cathodic protection online monitor away from the cable, and the end of the cable away from the cathodic protection online monitor is movably extended to the outside of the detection barrel.

[0010] Preferably, a threading hole for the cable to pass through is opened on the outside of the detection barrel, and a rubber sleeve is sleeved on the cable and engaged in the threading hole.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The utility model adds a connecting piece, a ring block and a mounting sleeve, and the connecting piece and the ring block can be used to conceal the detection mechanism in the mounting sleeve, thereby preventing the detection mechanism from being in a corrosive environment as a whole.

[0013] (2) The utility model increases the sealing performance between the ring block and the mounting sleeve by adding a rubber pad, thereby further increasing the service life of the detection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a front view of the utility model;

[0016] Figure 3 It is a three-dimensional diagram of the connecting piece of the utility model;

[0017] Figure 4 It is a partial cross-sectional view of the utility model;

[0018] Figure 5 It is a front view of the detection mechanism, ring block and positioning block of the utility model;

[0019] In the figure: 1. detection barrel; 2. first clamp ring; 3. mounting hole; 4. mounting seat; 5. threading hole; 6. second clamp ring; 7. mounting sleeve; 8. rubber sleeve; 9. cable; 10. positioning groove; 11. positioning block; 12. rubber pad; 13. ring block; 14. fastening bolt; 15. cathodic protection online monitor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] refer to Figure 1-2 and Figure 4 As shown, the utility model provides a cathode detection device for an oil and gas transmission pipeline, comprising: an inverted detection barrel 1, a hollow mounting sleeve 7 is provided at the bottom of the inner side of the detection barrel 1, a connecting piece, a ring block 13 and a detection mechanism are provided in the mounting sleeve 7 from the outside to the inside, the ring block 13 is installed on the outer wall of the end of the detection mechanism, an installation space for accommodating the ring block 13 is formed between the connecting piece and the mounting sleeve 7, and the connecting piece can be detachably installed on the mounting sleeve 7.

[0022] As mentioned above, when using the detection barrel 1, mounting sleeve 7, connecting piece, ring block 13 and detection mechanism provided by the utility model, one end of the detection mechanism is inserted into the mounting sleeve 7, and the ring block 13 on the detection mechanism is abutted against the mounting sleeve 7. At this time, the ring block 13 is fastened to the mounting sleeve 7 through the connecting piece, so that the detection mechanism is hidden and installed in the mounting sleeve 7, thereby improving the service life of the detection mechanism.

[0023] In the present utility model, combined with Figure 4 As shown, the detection mechanism of this embodiment is sleeved with a rubber pad 12 for sealing, and the rubber pad 12 is arranged between the ring block 13 and the installation sleeve 7.

[0024] As described above, when the rubber pad 12 provided by the present invention is used, after the detector mechanism is installed, the rubber pad 12 is deformed by force, and the deformed rubber pad 12 fills the gap between the ring block 13 and the installation sleeve 7 to prevent the material in the detection barrel 1 from entering the installation sleeve 7.

[0025] In the present utility model, combined with Figure 1 and Figure 3-4 As shown, the connecting piece of this embodiment includes two first clamping rings 2 and a second clamping ring 6 with semi-arc structures, and four mounting seats 4 are distributed in a circular array on the outer wall of the mounting sleeve 7. The first clamping ring 2 and the second clamping ring 6 are each provided with two mounting holes 3 that extend to the corresponding mounting seats 4 respectively, and a plurality of fastening bolts 14 that are respectively screwed into the mounting holes 3 are provided above the first clamping ring 2 and the second clamping ring 6.

[0026] As mentioned above, when using the connecting piece provided by the utility model, when the ring block 13 abuts against the end of the mounting sleeve 7, the first clamping ring 2 and the second clamping ring 6 are respectively abutted against the outer sides of the ring block 13, and the first clamping ring 2 and the second clamping ring 6 are locked and installed on the mounting seat 4 by tightening bolts 14, so that the ring block 13 is clamped and installed between the first clamping ring 2 and the second clamping ring 6 and the mounting sleeve 7.

[0027] Further, in order to facilitate the positioning of the detection mechanism, refer to Figure 3-5 As shown, two positioning grooves 10 are provided on the side of the first clamp ring 2 and the second clamp ring 6 close to the installation sleeve 7, and positioning blocks 11 are welded around the ring block 13, and one end of the four positioning blocks 11 extends into the positioning grooves 10 respectively. Before the connector is installed, the positioning blocks 11 on the ring block 13 are stuck in the positioning grooves 10 on the first clamp ring 2 and the second clamp ring 6. After the first clamp ring 2 and the second clamp ring 6 are installed on the mounting seat 4, the cathodic protection online monitor 15 is positioned by the positioning blocks 11 and the positioning grooves 10 to prevent it from shaking and rotating.

[0028] In the present utility model, combined with Figure 4 As shown, the detection mechanism of this embodiment includes a cathodic protection online monitor 15 and a cable 9 electrically connected to the cathodic protection online monitor 15, and the ring block 13 is arranged on the outer wall of the end of the cathodic protection online monitor 15 away from the cable 9, and the end of the cable 9 away from the cathodic protection online monitor 15 is movable and extends to the outside of the detection barrel 1.

[0029] Combination Figure 4 As shown, a threading hole 5 for the cable 9 to pass through is opened on the outside of the detection barrel 1, and a rubber sleeve 8 is sleeved on the cable 9 and engaged in the threading hole 5.

[0030] As mentioned above, when using the method provided by the utility model, the cable 9 in the detection mechanism is passed outward through the installation sleeve 7 and the threading hole 5, and the cable 9 is pulled, so that the cathodic protection online monitor 15 is placed in the installation sleeve 7. At this time, the rubber sleeve 8 is put on the cable 9, and the rubber sleeve 8 is filled between the threading hole 5 and the cable 9 to prevent external rainwater from entering the installation sleeve 7.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cathode detection device for oil and gas pipelines, characterized in that: include: A detection barrel (1) that can be turned upside down is provided with a hollow mounting sleeve (7) at the bottom of the inner side of the detection barrel (1), a connecting piece, a ring block (13) and a detection mechanism are provided in the mounting sleeve (7) from the outside to the inside in sequence, the ring block (13) is mounted on the outer wall of the end of the detection mechanism, an installation space for accommodating the ring block (13) is formed between the connecting piece and the mounting sleeve (7), and the connecting piece is detachably mounted on the mounting sleeve (7).

2. The cathode detection device for oil and gas pipeline according to claim 1, characterized in that: A rubber pad (12) for sealing is sleeved on the detection mechanism, and the rubber pad (12) is arranged between the ring block (13) and the mounting sleeve (7).

3. The cathode detection device for oil and gas pipeline according to claim 1, characterized in that: The connecting member comprises two first clamping rings (2) and a second clamping ring (6) in a semi-arc structure. Four mounting seats (4) are distributed in a circular array on the outer wall of the mounting sleeve (7). The first clamping ring (2) and the second clamping ring (6) are each provided with two mounting holes (3) extending to the corresponding mounting seats (4). A plurality of fastening bolts (14) are provided above the first clamping ring (2) and the second clamping ring (6) and are respectively screwed into the mounting holes (3).

4. The cathode detection device for oil and gas pipeline according to claim 3 is characterized in that: Two positioning grooves (10) are provided on one side of the first clamping ring (2) and the second clamping ring (6) close to the mounting sleeve (7), positioning blocks (11) are welded around the ring block (13), and one end of the four positioning blocks (11) respectively extends into the positioning grooves (10).

5. The cathode detection device for oil and gas pipeline according to claim 1, characterized in that: The detection mechanism comprises a cathodic protection online monitor (15) and a cable (9) electrically connected to the cathodic protection online monitor (15); the ring block (13) is arranged on the outer wall of the cathodic protection online monitor (15) at one end facing away from the cable (9); and the end of the cable (9) facing away from the cathodic protection online monitor (15) movably penetrates and extends to the outside of the detection barrel (1).

6. The cathode detection device for oil and gas pipeline according to claim 5, characterized in that: The detection barrel (1) is provided with a threading hole (5) for the cable (9) to pass through on the outside, and the cable (9) is sleeved with a rubber sleeve (8) that is engaged in the threading hole (5).

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