CN112798690A

CN112798690A - Explosion-proof ultrasonic wall thickness monitoring probe clamping device

Info

Publication number: CN112798690A
Application number: CN202110283995.7A
Authority: CN
Inventors: 贾文龙; 冷翔宇; 李长俊; 黄军; 韩西成; 唐加伟; 赵宏成; 吴瑕
Original assignee: Han Zheng Testing Technology Co ltd; Southwest Petroleum University
Current assignee: Han Zheng Testing Technology Co ltd; Southwest Petroleum University
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-05-14

Abstract

The invention provides an explosion-proof ultrasonic wall thickness monitoring probe clamping device, and belongs to the field of online monitoring of petroleum and natural gas pipelines. The clamping device mainly comprises components such as a cross rod, a clamp, a probe shell, a fixing stud and the like, an explosion-proof material and a heat-conducting silicone grease thin layer are used, an external cable is sealed in an explosion-proof threading pipe, the explosion-proof capacity under complex environments such as high temperature and high pressure is improved, a cable clamping block is used, and the influence on the operation safety of the probe caused by the movement of the cable and the falling of a joint is prevented. The device also uses a unique structure of a clamp and a fixing stud, so that the clamping device can be flexibly installed and fixed on pipe bends with different pipe diameters and different curvatures, the probe can be attached to the pipe wall as far as possible, and the device is suitable for distributed array monitoring. The clamping device provided by the invention meets the requirement that the ultrasonic wall thickness monitoring probe is fixedly installed on different parts of an oil and gas pipeline with high explosion-proof requirement.

Description

Explosion-proof ultrasonic wall thickness monitoring probe clamping device

Technical Field

The invention discloses an explosion-proof ultrasonic wall thickness monitoring probe clamping device, and relates to a monitoring probe clamp holder for an oil and gas pipeline.

Background

In the field of petroleum and natural gas gathering and transporting pipelines nowadays, the gathering and transporting pipelines usually operate under complex working conditions of high temperature, high pressure and the like, the gathered and transported media often contain a large amount of water, hydrogen sulfide and sand which are easy to corrode the pipe wall to reduce the wall thickness, the service life of the pipelines is greatly influenced, and as a considerable part of pipelines in China enter a stage of considering how to prolong the service life, and the energy safety problem is more and more emphasized in China, the real-time monitoring by the wall thickness monitoring probe is taken as an effective monitoring means for ensuring the safe operation of the pipeline, the wall thickness monitoring probe is also concerned by researchers in related industries in recent years, whether the installation of the probe is stable or not, whether the probe is safe or not and whether the probe is attached to a pipe wall or not have important influence on the wall thickness monitoring of the petroleum and natural gas pipeline, so that the clamping device of the ultrasonic wall thickness monitoring probe is particularly important.

Among the known ultrasonic probe clamping devices, a clamping device with a flaw detection probe (publication No. CN204214817U, publication No. CN108895264A) realizes flexible fixing of probes of different sizes and different angular positions, but cannot realize explosion prevention and is not suitable for oil and gas pipelines. And other parts of the probe clamping devices (with the publication number of CN209821129U) can be installed by being attached to curved surfaces such as pipe walls, but the installation is not flexible and diversified and can not be applied to the environment with explosion-proof requirements. Through comparative analysis, it can be seen that the existing clamping device or structure of part of the ultrasonic probe can play a role in fixing the probe, but has some obvious defects and does not have a clamping device which meets the explosion-proof requirement of the petroleum and natural gas pipeline.

Disclosure of Invention

Aiming at the existing ultrasonic probe clamping device and structure, the invention aims to solve the problem of providing an explosion-proof ultrasonic wall thickness monitoring probe clamping device, wherein the clamping device adopts a unique hoop structure, has the explosion-proof capability under the high-temperature and high-pressure environment, can be flexibly arranged on different parts such as elbows, tees and the like in an oil and gas pipeline for wall thickness monitoring, can also keep the ultrasonic wall thickness monitoring probe stably arranged, and enables the probe to be attached to the pipe wall.

The invention discloses an explosion-proof ultrasonic wall thickness monitoring probe clamping device which comprises a cross rod 1, a cushion block 2, a probe shell 3, a screw rod connecting piece 4, a knob 5, an explosion-proof threading pipe 6, a cable fixing piece 7, a fixing stud 8, a clamp 9 and a sealing ring 10; the knob 5 is connected with the probe shell 3 through the screw rod connecting piece 4 at the top of the device, the knob and the sealing ring form a structure for placing the ultrasonic wall thickness monitoring probe, the cushion block 2 and the cable fixing piece 7 are connected with the cross rod 1 through bolts, and the whole clamping device is installed and fixed on the pipe wall through the hoop 9 and the fixing stud 8.

The technical scheme is as follows:

(1) among this explosion-proof ultrasonic wave wall thickness monitoring probe clamping device, metal material all adopts stainless steel 304, inner wall department scribbles the heat conductivity splendid in the probe shell 3, high temperature resistant, the thin layer of non-corrosive silicone grease, a heat conduction to transducer and relevant electronic component, the probe seals in explosion-proof threading pipe 6 with the connecting cable of follow-up system, these designs have promoted clamping device's explosion-proof ability under high temperature high pressure environment, the cable clamp piece is equipped with in cable mounting 7 simultaneously, prevent that the removal of cable or the safety that drops of joint from causing the influence to clamping device, this clamping device's explosion-proof security further promotes.

(2) The invention uses a unique hoop and a fixing stud structure to install and fix on the pipe wall of the petroleum and natural gas pipeline, the lower end of the fixing stud 9 is a protective sleeve to prevent the pipe wall from being worn when being screwed, the hoop clamps the pipeline when in installation, the two ends of the hoop are fixed on a cross bar chute 12 of a clamping device, the position of the device on the pipe wall is determined, and then the fixing stud is screwed to further fix the wall thickness monitoring probe clamping device, thereby leading the explosion-proof ultrasonic wall thickness monitoring probe clamping device to be firmly fixed on the smooth pipe wall, wherein the hoop 9 and the fixing stud 8 are convenient to disassemble, the installation is very flexible, the invention can be suitable for elbows with different diameters and bending radiuses, and has the capability of forming a plurality of distributed.

Drawings

Fig. 1 is a schematic structural diagram of an explosion-proof ultrasonic wall thickness monitoring probe clamping device of the invention.

In the figure: the device comprises a cross rod 1, a cushion block 2, a probe shell 3, a screw rod connecting piece 4, a knob 5, an explosion-proof threading pipe 6, a cable fixing piece 7, a fixing stud 8, a clamp 9 and a sealing ring 10.

FIG. 2 is a cross-sectional view of a cross-bar of an explosion-proof ultrasonic wall thickness monitoring probe clamping device of the present invention.

In the figure: 11 cross-bar section, 12 sliding groove, 13 bolt hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described below with reference to the accompanying drawings in the embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

The device comprises a probe placing part and a clamping and fixing part, wherein the probe placing part mainly comprises a sealed probe shell, a cable fixing part, a screw rod connecting piece, a knob and a cushion block, and is used for fixing the probe, the cable and the sealed probe placing space, enhancing the heat conduction efficiency and improving the explosion-proof capability; the clamping and fixing part mainly comprises a cross rod, a clamp and a fixing stud, and is used for firmly installing the whole ultrasonic wall thickness monitoring probe clamping device on the pipe wall of the petroleum and natural gas pipeline, enabling the ultrasonic monitoring probe to be close to the pipe wall and enhancing the working efficiency of the monitoring probe.

As shown in fig. 1, the specific embodiment is as follows:

step 1, unscrewing a bolt of a screw rod connecting piece, taking down the bolt, installing an ultrasonic probe, connecting an external cable in a clamping device with the probe, and coating a silicone grease thin layer with proper thickness;

step 2, screwing down a corresponding fixing bolt after the screw rod connecting piece is installed, rotating a top knob, pressing an ultrasonic probe tightly, and smearing an ultrasonic coupling agent at the contact position of the bottom end and the pipe wall;

step 3, after the installation position on the pipe wall is determined, clamping the pipe by a hoop with the size matched with that of the petroleum and natural gas pipe, enabling two ends of the hoop to penetrate through the cross rod sliding groove, and gradually screwing nuts at the two ends to fix the clamping device;

step 4, gradually screwing the fixing stud on the cross rod and the connecting bolt of the probe shell and the cross rod, so that the lower end of the device for placing the probe is tightly attached to the pipe wall;

step 5, checking whether the probe is tightly attached to the pipe wall and whether the fixing of the clamping device is firm;

step 6, communicating the probe to test whether the contact is good or not, and checking whether the probe can work normally or not;

and 7, if abnormal phenomena exist, adjusting the knob and the fixing stud until the monitoring probe operates normally.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An explosion-proof ultrasonic wall thickness monitoring probe clamping device is characterized by comprising a cross rod (1), a cushion block (2), a probe shell (3), a screw rod connecting piece (4), a knob (5), an explosion-proof threading pipe (6), a cable fixing piece (7), a fixing stud (8), a clamp (9) and a sealing ring (10); the anti-explosion wire-penetrating device comprises a probe shell (3), a screw rod connecting piece (4), a knob (5), an anti-explosion wire-penetrating pipe (6), a cable fixing piece (7) and a sealing ring (10), wherein the probe shell, the screw rod connecting piece, the knob (5), the anti-explosion wire-penetrating pipe and the cable fixing piece form a sealing structure for placing a probe; the cross rod (1), the cushion block (2), the fixing stud (8) and the clamp (9) form a clamping structure for mounting and fixing; the clamping device adopts an explosion-proof stainless steel material, the probe is sealed in an explosion-proof structure, and the external cable is sealed in an explosion-proof threading pipe, so that good explosion-proof performance is provided, and the safety requirement of the petroleum and natural gas pipeline in operation under a high-temperature and high-pressure environment is met.

2. The clamping device of the explosion-proof ultrasonic wall thickness monitoring probe according to claim 1, wherein the cross rod (1) and the pipe wall of the oil and gas pipeline are fixedly connected by a hoop (9) and a fixing stud (8), two ends of the hoops (9) with different sizes can move in a sliding groove (12) of the cross rod (11), and after the hoops are moved to the position corresponding to the pipe wall, the hoops are fixed by nuts and the fixing studs (8).

3. The explosion-proof ultrasonic wall thickness monitoring probe clamping device as claimed in claim 1, characterized in that the inner wall of the probe shell (3) is coated with a silicone grease thin layer, the silicone grease material used by the thin layer does not corrode metal, and the thin layer is non-toxic, odorless, water-resistant and has extremely low volatilization loss, and the function of the thin layer is to play a good heat conduction effect when the probe is in operation, accelerate the heat dissipation of electronic components such as piezoelectric transducers and the like, and further improve the explosion-proof capability of the monitoring probe clamping device.