Natural gas pipeline insulation testing device

Abstract

The invention discloses a natural gas pipeline insulation testing device, and relates to the technical field of insulation testing. The marking problem is solved. The device specifically comprises a base; a plurality of stand columns are fixed to the outer wall of the top of the base, an outer ring electrode wheel is arranged on the top of one stand column, conveying wheel pieces used for supporting a pipeline and driving the pipeline to rotate are arranged on the tops of the other stand columns, and a vertical plate is fixed to the outer wall of the top of one end of the base through bolts. One side of the vertical plate is in transmission connection with a detection electrode assembly through a multi-stage expansion piece, and a marking assembly moving synchronously with the detection electrode assembly is arranged on the side, located on the outer wall of the pipeline, of the vertical plate. By arranging the marking pen, on the basis that all-directional detection is achieved through transverse movement of the electric brush and the electrode tip and rotation of the pipeline, under the breakdown condition of insulation failure, marking can be conducted through the marking pen, and therefore follow-up treatment and analysis on the breakdown position are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of insulation testing, and in particular to a natural gas pipeline insulation testing device. Background Art

[0002] Gas is a common kitchen combustion fuel in our current life. It has good environmental performance and is economical to use. Since gas is flammable and explosive, the insulation of the gas pipeline must be ensured when it is transported in a gas pipeline. If the insulation of the gas pipeline is insufficient, electric sparks may be generated in the pipeline, causing internal gas combustion and explosion, resulting in major safety accidents.

[0003] After searching, the Chinese patent publication number CN118130915B discloses a natural gas pipeline grounding effect test device, including a detector body and a storage box structure for storing the detector body, the detector body includes a shell, a display screen arranged on the surface of the shell, an operation panel and a detection mechanism arranged inside the shell; the detection mechanism includes a power supply, an inverter and an iron core, the two sides of the iron core are respectively wound with an input coil and an output coil, and the input end of the input coil is connected to the output end of the inverter.

[0004] The above patent has the following shortcomings: although it can realize automatic voltage change detection, it cannot mark the defect when insufficient insulation is detected.

[0005] To this end, the present invention provides a natural gas pipeline grounding effect testing device. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a natural gas pipeline insulation testing device.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A natural gas pipeline insulation testing device comprises a base;

[0009] A plurality of columns are fixed to the top outer wall of the base, wherein an outer ring electrode wheel is arranged on the top of one of the columns, and a conveying wheel for supporting the pipeline and driving the pipeline to rotate is arranged on the top of another column, a vertical plate is fixed to the top outer wall of one end of the base by bolts, one side of the vertical plate is connected to the detection electrode assembly through a multi-stage expansion joint transmission, and a marking assembly is arranged on one side of the vertical plate located on the outer wall of the pipeline, which moves synchronously with the detection electrode assembly;

[0010] The detection electrode assembly includes a support block 1 and a brush connected to the bottom of the support block 1 through an external threaded rod and in contact with the inner wall of the pipeline. The outer ring electrode wheel includes a base wheel rotatably connected to the column and a groove opened in the radial direction of the base wheel. The inner wall of the groove is movably connected to an electrode head in contact with the outer wall of the pipeline through an insulating spring.

[0011] The marking assembly comprises a support block 2 slidably connected to the top of the base through a sliding leg and a slide frame longitudinally slidably connected to the support block 2, and a marking pen is fixed to the top outer wall of the slide frame;

[0012] The brush and the electrode head are connected to a high voltage test circuit.

[0013] Preferably, at least one of the electrode heads contacts the outer wall of the pipeline.

[0014] Furthermore: a magnetic block is fixed to the bottom outer wall of the slide by bolts, an electromagnet is fixed to the bottom outer wall of the support block 2, the magnetic poles of the electromagnet and the magnetic block are opposite, and the electromagnet is connected to a high-voltage test circuit.

[0015] On the basis of the above scheme: a rotating ring is rotatably connected inside the end of the base wheel, a plurality of inclined grooves are provided on the inner wall of the rotating ring, and the electrode head is movably contacted and limitedly matched with the inner wall of the inclined groove through a guide column.

[0016] A more preferred solution in the above solution is that the conveying wheel member includes a supporting wheel and a connecting shaft, and the supporting wheel is rotatably connected to the top of the column through the connecting shaft.

[0017] As a further solution of the present invention: a motor is fixed to the side wall of one of the columns by bolts, and the outer wall of the output shaft of the motor is connected to the end of one of the connecting shafts by a coupling.

[0018] At the same time, a contact-type conductive component is arranged on the inner side of the column connected to the base wheel. The contact-type conductive component includes a conductive sheet fixed to the column and a contact fixed to the base wheel. The contact and the conductive sheet are connected to the circuit of the electrode head, and the contact and the conductive sheet are in contact and cooperation.

[0019] As a preferred embodiment of the present invention: the externally threaded rod is movably inserted into the inner wall of the support block 1, and the outer walls of the externally threaded rod on both sides of the support block 1 are both connected with limiting nuts through threads.

[0020] At the same time, the multi-stage telescope is a screw-type multi-stage telescope, the inner wall of the support block 2 is connected to a screw through a thread, the screw is rotatably connected to the side wall of the vertical plate, the screw of the multi-stage telescope is synchronously coordinated with the screw through a synchronous belt, and the connecting shaft is coordinated with the screw transmission through an intermittent transmission mechanism.

[0021] As a more preferred solution of the present invention: the intermittent transmission mechanism comprises a driving disc and a driven disc, the driving disc is connected to the outer wall of the connecting shaft through a key, the driven disc is connected to the outer wall of the lead screw through a key, a plurality of driven grooves are radially provided on the driven disc, and a driving shaft matching the driven grooves is fixed to the side wall of the driving disc through a rocker arm;

[0022] The outer wall of the driven disc is provided with a second avoidance groove, and the outer wall of the active disc is provided with a first avoidance groove.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention, by providing a marking pen, can realize all-round detection by utilizing the lateral movement of the brush and the electrode head and the self-rotation of the pipeline. In the event of insulation failure and breakdown, the marking pen can also be used to mark lines, thereby facilitating subsequent processing and analysis of the breakdown site.

[0025] 2. The present invention drives the marking pen to mark based on an electromagnet and a magnetic suction block. At the same time, the circuit design places the electromagnet in a high-voltage test circuit, and realizes automatic marking control by utilizing the current characteristic of the high-voltage test circuit during breakdown. At the same time, compared with traditional algorithmic electronic control, the magnetic field generation of the electromagnet and the breakdown process are carried out simultaneously without delay, thereby increasing the marking accuracy.

[0026] 3. The present invention, by setting a rotating ring, utilizes the movable limit of the guide column and the inclined groove to make multiple electrode heads be in the same state relative to the base wheel, so that there will be no collision when the electrode head switches contact with the outer wall of the pipeline, thereby preventing damage to the pipeline and the electrode head.

[0027] 4. The present invention, by setting a connecting shaft and a synchronous belt and utilizing intermittent transmission, can, on the one hand, enable the rotation of the pipeline, the movement of the brush, and the movement of the electrode head to be arranged using the same power source, thereby increasing the linkage of the device; on the other hand, on the basis of the linkage, it can ensure that the rotation of the pipeline is consistent with the movement of the brush and the electrode head, thereby ensuring the comprehensiveness of the detection position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of a natural gas pipeline insulation testing device proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a detection electrode assembly of a natural gas pipeline insulation test device proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the outer ring electrode wheel of a natural gas pipeline insulation testing device proposed by the present invention;

[0031] Figure 4This is a schematic diagram of the cross-sectional structure of the outer ring electrode wheel of a natural gas pipeline insulation testing device proposed by the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of a marking component of a natural gas pipeline insulation test device proposed by the present invention;

[0033] Figure 6 A schematic diagram of a swivel structure of a natural gas pipeline insulation testing device proposed by the present invention;

[0034] Figure 7 A schematic diagram of the structure of a conveying wheel component of a natural gas pipeline insulation testing device proposed by the present invention;

[0035] Figure 8 This is a schematic diagram of the overall driving part structure of a natural gas pipeline insulation test device proposed by the present invention;

[0036] Fig. 9 This is a schematic diagram of the intermittent transmission mechanism structure of a natural gas pipeline insulation testing device proposed by the present invention;

[0037] Fig.10 The present invention provides a circuit diagram of a natural gas pipeline insulation testing device.

[0038] In the figure: 1. base; 2. column; 3. vertical plate; 4. outer ring electrode wheel; 5. multi-stage telescope; 6. detection electrode assembly; 7. marking assembly; 8. conveying wheel; 9. support block one; 10. limit nut; 11. external threaded rod; 12. brush; 13. base wheel; 14. groove; 15. active disk; 16. contact conductive assembly; 17. electrode head; 18. insulating spring; 19. support block two; 20. marking pen; 21. slide; 22. electromagnet; 23. magnetic block; 24. slide leg; 25. lead screw; 26. guide column; 27. inclined groove; 28. swivel; 29. ​​motor; 30. support wheel; 31. connecting shaft; 32. synchronous belt; 33. intermittent transmission mechanism; 34. rocker arm; 35. drive shaft; 36. avoidance groove one; 37. driven groove; 38. avoidance groove two; 39. driven disk. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] Embodiment 1:

[0042] A natural gas pipeline insulation testing device, such as Figure 1-Figure 10 As shown, it includes a base 1, a plurality of columns 2 are fixed to the top outer wall of the base 1, an outer ring electrode wheel 4 is arranged on the top of one of the columns 2, and a conveying wheel 8 for supporting the pipeline and driving the pipeline to rotate is arranged on the top of the other columns 2, a vertical plate 3 is fixed to the top outer wall of one end of the base 1 by bolts, one side of the vertical plate 3 is connected to the detection electrode assembly 6 through a multi-stage telescope 5, and a marking assembly 7 that moves synchronously with the detection electrode assembly 6 is arranged on one side of the vertical plate 3 located on the outer wall of the pipeline.

[0043] The detection electrode assembly 6 includes a support block 9 and a brush 12 connected to the bottom of the support block 9 through an external threaded rod 11 and in contact with the inner wall of the pipeline. The outer ring electrode wheel 4 includes a base wheel 13 rotatably connected to the column 2 and a groove 14 opened in the radial direction of the base wheel 13. The inner wall of the groove 14 is movably connected to an electrode head 17 in contact with the outer wall of the pipeline through an insulating spring 18.

[0044] The marking assembly 7 includes a support block 19 slidably connected to the top of the base 1 through a sliding leg 24 and a slide 21 longitudinally slidably connected to the support block 19 , and a marking pen 20 is fixed to the top outer wall of the slide 21 .

[0045] The brush 12 and the electrode head 17 are connected to a high voltage test circuit.

[0046] At least one of the electrode heads 17 contacts the outer wall of the pipeline.

[0047] When the device is in use, the pipeline is placed on the outer ring electrode wheel 4 and the conveying wheel 8. The conveying wheel 8 drives the pipeline to rotate along the pipeline axis. The high-voltage test circuit applies voltage to the brush 12 and the electrode head 17, so that voltage appears on the inside and outside of the pipeline. When the insulation capacity of the pipeline insulation layer is insufficient, breakdown will occur, so that the brush 12 and the electrode head 17 are connected, and current appears in the high-voltage test circuit. At the same time, the slide 21 will slide upward relative to the support block 19, and the marking pen 20 will contact the outer wall of the pipeline to mark the breakdown point. Then the pipeline continues to rotate, and the brush 12 will move along the pipeline axis, thereby realizing all-round detection.

[0048] This device, by providing a marking pen 20, can realize all-round detection by utilizing the lateral movement of the brush 12 and the electrode head 17 and the self-rotation of the pipeline. In the event of insulation failure and breakdown, the marking pen 20 can also be used to mark lines, thereby facilitating subsequent processing and analysis of the breakdown site.

[0049] To solve the automation control and delay problems; e.g. Figure 5As shown, a magnetic block 23 is fixed to the bottom outer wall of the slide 21 by bolts, and an electromagnet 22 is fixed to the bottom outer wall of the support block 19. The magnetic poles of the electromagnet 22 and the magnetic block 23 are opposite, and the electromagnet 22 is connected to a high-voltage test circuit.

[0050] When a breakdown occurs, current will appear in the high-voltage test circuit, so that the electromagnet 22 generates a magnetic field to attract the magnetic block 23, so that the slide 21 moves up to perform marking.

[0051] This device drives the marking pen 20 to mark based on the electromagnet 22 and the magnetic suction block 23. At the same time, the circuit design places the electromagnet 22 in the high-voltage test circuit, and realizes automatic marking control by utilizing the current characteristic of the high-voltage test circuit during breakdown. At the same time, compared with traditional algorithm electronic control, the magnetic field generation of the electromagnet 22 and the breakdown process are carried out simultaneously without delay, thereby increasing the marking accuracy.

[0052] Since multiple electrode heads 17 are connected by insulating springs 18, when they rotate and do not contact the outer wall of the pipe, they will be located at the outermost position until they rotate to the moment of contacting the outer wall of the pipe. Since their position is larger than the radius when they contact the outer wall of the pipe, they will collide with the outer wall of the pipe and then shrink inward, and the collision will cause damage to the outer wall of the pipe and the electrode head 17. In order to solve the problem of damage prevention; Figure 6 As shown, a swivel ring 28 is rotatably connected to the end of the base wheel 13 , and a plurality of inclined grooves 27 are provided on the inner wall of the swivel ring 28 . The electrode head 17 is movably contacted and limitedly engaged with the inner wall of the inclined groove 27 through a guide column 26 .

[0053] The device, by setting a rotating ring 28, utilizes the movable limit of the guide column 26 and the inclined groove 27 to make multiple electrode heads 17 be in the same state relative to the base wheel 13, so that there will be no collision when the electrode head 17 switches contact with the outer wall of the pipeline, thereby preventing damage to the pipeline and the electrode head 17.

[0054] To solve the rotation problem; Figure 7 As shown, the conveying wheel member 8 includes a supporting wheel 30 and a connecting shaft 31 , and the supporting wheel 30 is rotatably connected to the top of the column 2 via the connecting shaft 31 .

[0055] A motor 29 is fixed to the side wall of one of the columns 2 by bolts, and the outer wall of the output shaft of the motor 29 is connected to the end of one of the connecting shafts 31 by a coupling.

[0056] When the motor 29 is started, it can drive the connecting shaft 31 to rotate, thereby driving the supporting wheel 30 to rotate, and then using friction to rotate the pipeline.

[0057] A contact-type conductive component 16 is arranged on the inner side of the column 2 connected to the base wheel 13. The contact-type conductive component 16 includes a conductive sheet fixed to the column 2 and a contact fixed to the base wheel 13. The contact and the conductive sheet are connected to the circuit of the electrode head 17, and the contact and the conductive sheet are in contact and cooperation.

[0058] The externally threaded rod 11 is movably inserted into the inner wall of the support block 9, and the outer walls of the externally threaded rod 11 on both sides of the support block 9 are connected to limiting nuts 10 through threads. The position of the externally threaded rod 11 can be adjusted by two limiting nuts 10, thereby adjusting the position of the brush 12.

[0059] When this embodiment is in use, the pipeline is placed on the outer ring electrode wheel 4 and the conveying wheel member 8, and the conveying wheel member 8 drives the pipeline to rotate along the pipeline axis. The high-voltage test circuit applies voltage to the brush 12 and the electrode head 17, so that voltage appears inside and outside the pipeline. When the insulation capacity of the pipeline insulation layer is insufficient, breakdown will occur, so that the brush 12 and the electrode head 17 are connected, and current appears in the high-voltage test circuit. At the same time, the slide 21 will slide upward relative to the support block 19, and the marking pen 20 will contact the outer wall of the pipeline to mark the breakdown point. Then the pipeline continues to rotate, and the brush 12 will move along the pipeline axis, thereby realizing all-round detection. When breakdown occurs, current will appear in the high-voltage test circuit, so that the electromagnet 22 generates a magnetic field to adsorb the magnetic suction block 23, so that the slide 21 moves up to mark, and when the motor 29 is started, it can drive the connecting shaft 31 to rotate, thereby driving the support wheel 30 to rotate, and then use friction to rotate the pipeline.

[0060] Embodiment 2:

[0061] A natural gas pipeline insulation testing device, such as Figure 1-Figure 10 As shown, in order to solve the comprehensive driving problem; this embodiment makes the following improvements on the basis of embodiment 1: the multi-stage telescope 5 is a screw-type multi-stage telescope, the inner wall of the support block 2 19 is connected with a screw 25 through a thread, the screw 25 is rotatably connected to the side wall of the vertical plate 3, the screw of the multi-stage telescope 5 is synchronously matched with the screw 25 through a synchronous belt 32, and the connecting shaft 31 is transmitted and matched with the screw 25 through an intermittent transmission mechanism 33.

[0062] The intermittent transmission mechanism 33 includes a driving disk 15 and a driven disk 39, wherein the driving disk 15 is connected to the outer wall of the connecting shaft 31 via a key, and the driven disk 39 is connected to the outer wall of the lead screw 25 via a key. A plurality of driven grooves 37 are radially provided on the driven disk 39, and a driving shaft 35 matching the driven grooves 37 is fixed to the side wall of the driving disk 15 via a rocker arm 34.

[0063] The outer wall of the driven plate 39 is provided with a second avoidance groove 38 , and the outer wall of the driving plate 15 is provided with a first avoidance groove 36 .

[0064] When this embodiment is in use, when the connecting shaft 31 rotates to drive the pipeline to rotate, after one rotation, the driving shaft 35 will engage with the driven groove 37, so that the driven disk 39 rotates, and the driven disk 39 rotates to drive the screw 25 to rotate, and then drives the multi-stage expansion joint 5 to rotate through the synchronous belt 32, thereby driving the brush 12 and the electrode head 17 to move axially along the pipeline respectively, and then the pipeline continues to rotate for detection until it rotates one more circle, and the brush 12 and the electrode head 17 are axially displaced again.

[0065] This device, by setting a connecting shaft 31 and a synchronous belt 32 and utilizing intermittent transmission, can, on the one hand, enable the rotation of the pipeline, the movement of the brush 12, and the movement of the electrode head 17 to be arranged using the same power source, thereby increasing the linkage of the device; on the other hand, on the basis of linkage, it can ensure that the rotation of the pipeline is consistent with the movement of the brush 12 and the electrode head 17, thereby ensuring the comprehensiveness of the detection position.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A natural gas pipeline insulation testing device, comprising a base (1), characterized in that: A plurality of columns (2) are fixed to the top outer wall of the base (1), wherein an outer ring electrode wheel (4) is arranged on the top of one of the columns (2), and a conveying wheel (8) for supporting the pipeline and driving the pipeline to rotate is arranged on the top of the other columns (2); a vertical plate (3) is fixed to the top outer wall of one end of the base (1) by bolts, and a detection electrode assembly (6) is connected to one side of the vertical plate (3) by transmission via a multi-stage expansion joint (5); and a marking assembly (7) that moves synchronously with the detection electrode assembly (6) is arranged on one side of the vertical plate (3) located on the outer wall of the pipeline; The detection electrode assembly (6) comprises a support block (9) and a brush (12) connected to the bottom of the support block (9) through an external threaded rod (11) and in contact with the inner wall of the pipeline; the outer ring electrode wheel (4) comprises a base wheel (13) rotatably connected to the column (2) and a groove (14) provided in the radial direction of the base wheel (13); the inner wall of the groove (14) is movably connected to an electrode head (17) in contact with the outer wall of the pipeline through an insulating spring (18); The marking assembly (7) comprises a supporting block 2 (19) slidably connected to the top of the base (1) via a sliding leg (24) and a slide frame (21) longitudinally slidably connected to the supporting block 2 (19), and a marking pen (20) is fixed to the top outer wall of the slide frame (21); The brush (12) and the electrode head (17) are connected to a high-voltage test circuit.

2. A natural gas pipeline insulation testing device according to claim 1, characterized in that: At least one of the electrode heads (17) contacts the outer wall of the pipeline.

3. A natural gas pipeline insulation testing device according to claim 1, characterized in that: A magnetic attraction block (23) is fixed to the bottom outer wall of the slide (21) by bolts, and an electromagnet (22) is fixed to the bottom outer wall of the second support block (19). The magnetic poles of the electromagnet (22) and the magnetic attraction block (23) are opposite, and the electromagnet (22) is connected to a high-voltage test circuit.

4. A natural gas pipeline insulation testing device according to claim 1, characterized in that: A rotating ring (28) is rotatably connected to the end of the base wheel (13), and a plurality of inclined grooves (27) are provided on the inner wall of the rotating ring (28). The electrode head (17) is movably contacted and limitedly matched with the inner wall of the inclined groove (27) through a guide column (26).

5. A natural gas pipeline insulation testing device according to claim 1, characterized in that: The conveying wheel member (8) comprises a supporting wheel (30) and a connecting shaft (31), and the supporting wheel (30) is rotatably connected to the top of the column (2) via the connecting shaft (31).

6. A natural gas pipeline insulation testing device according to claim 5, characterized in that: A motor (29) is fixed to the side wall of one of the uprights (2) by means of bolts, and the outer wall of the output shaft of the motor (29) is connected to the end of one of the connecting shafts (31) by means of a coupling.

7. A natural gas pipeline insulation testing device according to claim 1, characterized in that: A contact-type conductive component (16) is arranged on the inner side of a column (2) connected to the base wheel (13), and the contact-type conductive component (16) comprises a conductive sheet fixed to the column (2) and a contact fixed to the base wheel (13), the contact and the conductive sheet are connected to the circuit of the electrode head (17), and the contact and the conductive sheet are in contact and cooperation.

8. A natural gas pipeline insulation testing device according to claim 1, characterized in that: The externally threaded rod (11) is movably plugged into the inner wall of the support block (9), and the outer walls of the externally threaded rod (11) on both sides of the support block (9) are both threadedly connected to the limiting nuts (10).

9. A natural gas pipeline insulation testing device according to claim 5, characterized in that: The multi-stage telescopic device (5) is a screw-type multi-stage telescopic device. The inner wall of the second support block (19) is connected to a screw (25) through a thread. The screw (25) is rotatably connected to the side wall of the vertical plate (3). The screw of the multi-stage telescopic device (5) and the screw (25) are synchronously matched through a synchronous belt (32), and the connecting shaft (31) is transmission-matched with the screw (25) through an intermittent transmission mechanism (33).

10. A natural gas pipeline insulation testing device according to claim 9, characterized in that: The intermittent transmission mechanism (33) comprises a driving disk (15) and a driven disk (39), wherein the driving disk (15) is connected to the outer wall of the connecting shaft (31) via a key, and the driven disk (39) is connected to the outer wall of the lead screw (25) via a key, and a plurality of driven grooves (37) are radially provided on the driven disk (39), and a driving shaft (35) matching with the driven grooves (37) is fixed to the side wall of the driving disk (15) via a rocker arm (34); The outer wall of the driven disk (39) is provided with a second avoidance groove (38), and the outer wall of the active disk (15) is provided with a first avoidance groove (36).

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