Device for monitoring expansion and contraction amount of pipeline compensator

Abstract

The utility model relates to the technical field of pipeline compensators, in particular to a pipeline compensator expansion and contraction amount monitoring device which comprises a pipeline compensator, and specific expansion and contraction amount of the pipeline compensator is measured by additionally arranging an indicating pointer and a ruler indicating board on leading and connecting pipes at the two ends of the pipeline compensator. The expansion and contraction amount of the pipeline compensator can be accurately obtained by an inspector in the inspection process, when the expansion and contraction amount of the pipeline compensator is excessive, the pointer is in contact with the contact block to form a closed circuit, and the audible and visual alarm gives an audible and visual alarm, so that the expansion and contraction amount can be found by the inspector in time more easily. The sliding rod is in sliding connection with the top end of the second supporting rod and is limited and fixed through the limiting jackscrew, so that the initial installation position of the pointer is adjustable, it is guaranteed that the pointer points to the middle of the scale indicator during initial installation, and inaccurate measurement caused by installation deviation of the pointer is prevented.

Description

Technical Field

[0001] This utility model relates to the field of pipeline compensator technology, specifically a pipeline compensator expansion and contraction monitoring device. Background Technology

[0002] In the existing technology, gas pipeline maintenance personnel can only visually inspect whether the pipeline compensator has excessive expansion or contraction during routine inspections. They cannot quantitatively measure the expansion or contraction of the pipeline compensator, and they cannot detect when the expansion or contraction of the pipeline compensator exceeds the standard in a timely manner. Utility Model Content

[0003] The present invention aims to solve the above problems and thus provide a device for monitoring the expansion and contraction of pipeline compensators.

[0004] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0005] A device for monitoring the expansion and contraction of a pipeline compensator includes a pipeline compensator. A first support rod and a second support rod are respectively installed on the lead-in pipes at both ends of the pipeline compensator. The first support rod includes a horizontal rod and a vertical rod. The horizontal rod is arranged along the expansion and contraction direction of the pipeline compensator. A groove is formed on the top surface of the horizontal rod along its length. A sliding rod is installed in the groove. An indicator needle is fixedly connected to one end of the sliding rod. The other end of the sliding rod extends towards the side where the second support rod is located, and its end passes through the second support rod and is slidably connected to it. A limit screw is provided on one side of the second support rod. After the limit screw is tightened, its top end abuts against the sliding rod. A scale indicator is provided on the horizontal rod and on one side of the groove. Contact blocks are respectively provided at both ends of the scale indicator. When the pipeline compensator extends to its maximum extension or contracts to its maximum contraction, the indicator needle contacts one of the contact blocks respectively. An audible and visual alarm is provided at the top of the second support rod. Both the contact block and the indicator needle are electrically connected to the audible and visual alarm.

[0006] Furthermore, the scale indicator is U-shaped, with the middle section located on one side of the slide groove and having graduations, and two parallel sections located above both ends of the slide groove, with contact blocks positioned on opposite sides of the two parallel sections.

[0007] Furthermore, countersunk holes are provided on opposite sides of the two parallel sections of the scale indicator. A spring and a contact block are installed in the countersunk holes. One end of the contact block protrudes from the countersunk hole, and the two ends of the spring are fixedly connected to the scale indicator and the contact block, respectively. When the indicator needle contacts the contact block, the pipe compensator will continue to extend and retract. At this time, the contact block compresses the spring inward into the countersunk hole to prevent the indicator needle from contacting the contact block. After the audible and visual alarm sounds, the pipe compensator continues to extend and retract, causing damage to the indicator needle.

[0008] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0009] This invention measures the expansion and contraction of a pipeline compensator by installing indicator needles and scale plates on the lead pipes at both ends. This allows inspectors to accurately determine the expansion and contraction during inspections. When the expansion and contraction exceeds the allowable limit, the indicator needle contacts the contact block to form a closed circuit, triggering an audible and visual alarm, making it easier for staff to detect the problem promptly. The sliding rod is slidably connected to the top of the second support rod and is fixed by a limiting screw, allowing the initial installation position of the indicator needle to be adjustable. This ensures that the indicator needle initially points to the center of the scale plate, preventing inaccurate measurements due to installation deviation. Attached Figure Description

[0010] Fig. 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0011] Fig. 2 This is a top view of the first support rod in an embodiment of the present utility model;

[0012] The components in the diagram are labeled as follows: Pipe compensator 1, first support rod 2, second support rod 3, slide groove 4, sliding rod 5, indicator needle 6, scale indicator 7, contact block 8, spring 9, limit screw 10, audible and visual alarm 11, and lead pipe 1-1. Detailed Implementation

[0013] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0014] See Figs. 1-2 A device for monitoring the expansion and contraction of a pipe compensator includes a pipe compensator 1. A first support rod 2 and a second support rod 3 are respectively installed on the lead-in pipes 1-1 at both ends of the pipe compensator 1. The first support rod 2 includes a horizontal rod and a vertical rod. The horizontal rod is arranged along the expansion and contraction direction of the pipe compensator 1. A groove 4 is formed on the top surface of the horizontal rod along its length. A sliding rod 5 is installed in the groove 4. An indicator needle 6 is fixedly connected to one end of the sliding rod 5. The other end of the sliding rod 5 extends towards the side where the second support rod 3 is located, and its end passes through the second support rod 3 and is connected to... The second support rod 3 is slidably connected. A limiting screw 10 is provided on one side of the second support rod 3. After the limiting screw 10 is tightened, its top end abuts against the sliding rod 5. A scale indicator 7 is provided on the crossbar and on one side of the slide groove 4. Contact blocks 8 are provided at both ends of the scale indicator 7. When the pipe compensator 1 is extended to the maximum extension or shortened to the maximum contraction, the indicator needle 6 contacts one of the contact blocks 8 respectively. An audible and visual alarm 11 is provided at the top of the second support rod 3. Both the contact block 8 and the indicator needle 6 are electrically connected to the audible and visual alarm 11.

[0015] Furthermore, the scale indicator 7 is U-shaped, with the middle section located on one side of the slide 4 and having graduations, and the two parallel sections located above the two ends of the slide 4, with contact blocks 8 disposed on opposite sides of the two parallel sections.

[0016] Furthermore, countersunk holes are provided on opposite sides of the two parallel sections of the scale indicator 7. A spring 9 and a contact block 8 are installed in the countersunk holes. One end of the contact block 8 protrudes from the countersunk hole, and the two ends of the spring 9 are fixedly connected to the scale indicator 7 and the contact block 8, respectively. When the indicator needle 6 contacts the contact block 8, the pipe compensator 1 will continue to extend and retract. At this time, the contact block 8 compresses the spring 9 into the countersunk hole to prevent the indicator needle 6 from contacting the contact block 8. After the audible and visual alarm 11 sounds an alarm, the pipe compensator 1 continues to extend and retract, causing damage to the indicator needle 6.

[0017] The sliding rod 5 is a hollow tube so that after the wire is inserted, it can exit from the other end of the sliding rod 5 and connect to the indicator needle 6.

[0018] This invention measures the expansion and contraction of a pipeline compensator by installing indicator needles and scale plates on the lead pipes at both ends. This allows inspectors to accurately determine the expansion and contraction during inspections. When the expansion and contraction exceeds the allowable limit, the indicator needle contacts the contact block to form a closed circuit, triggering an audible and visual alarm, making it easier for staff to detect the problem promptly. The sliding rod is slidably connected to the top of the second support rod and is fixed by a limiting screw, allowing the initial installation position of the indicator needle to be adjustable. This ensures that the indicator needle initially points to the center of the scale plate, preventing inaccurate measurements due to installation deviation.

[0019] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A device for monitoring the amount of extension of a pipe expansion joint, comprising a pipe expansion joint, characterised in that: The first support rod and the second support rod are respectively arranged on the connecting pipes at the two ends of the pipeline compensator, the first support rod comprises a horizontal rod and a vertical rod, the horizontal rod is arranged along the extension direction of the pipeline compensator, a sliding groove is formed on the top surface of the horizontal rod along the length direction, a sliding rod is arranged in the sliding groove, an indicating needle is fixedly connected to the top of one end of the sliding rod, the other end of the sliding rod extends to the side where the second support rod is located, and the end portion penetrates through the second support rod and is in sliding connection with the second support rod, a limiting top screw is arranged on one side of the second support rod, the top end of the limiting top screw abuts against the sliding rod after being screwed, a scale indicating plate is arranged on the horizontal rod and located on one side of the sliding groove, contact blocks are arranged at the two ends of the scale indicating plate, the indicating needle is in contact with one of the contact blocks when the pipeline compensator is extended to the maximum extension or is shortened to the maximum contraction, and a sound-light alarm is arranged at the top end of the second support rod, and the contact blocks and the indicating needle are in electrical connection with the sound-light alarm.

2. A device for monitoring the amount of expansion of a pipe expansion joint according to claim 1, characterized in that: The scale indicating plate is in U shape, the middle section is located on one side of the sliding groove and can have scales, the two parallel sections are located above the two ends of the sliding groove, and the contact blocks are arranged on the opposite sides of the two parallel sections.

3. A device for monitoring the amount of expansion of a pipe expansion joint according to claim 2, wherein: The opposite sides of the two parallel sections of the scale indicating plate are both provided with counterbores, springs and contact blocks are arranged in the counterbores, one end of the contact block protrudes out of the counterbores, and the two ends of the spring are fixedly connected with the scale indicating plate and the contact block.

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