Continuous electric explosion spraying device for inner wall of pipe

Abstract

The utility model discloses a continuous electric explosion spraying device for the inner wall of a pipe, relates to the technical field of electric explosion spraying, and is used for solving the technical problems that in the existing electric explosion spraying process, a wire carrying belt is easy to break, and an explosion cavity can crack and deform. The spraying device comprises a base body, a cylinder body, a first electrode block, a second electrode block, a wire carrying belt, a metal wire, a rebounding mechanism and a locking mechanism. An explosion groove is formed in the base body, a plurality of explosion cavities are formed in the explosion groove at equal intervals, and a first groove is formed in the base body; the cylinder body wraps the outer surface of the base body, and a first through hole and a second through hole are formed in the cylinder body; the first electrode block is arranged in the first groove; the second electrode block is arranged in the second through hole; a third through hole is formed in the base body along the central axis, and the silk carrying belt penetrates through the third through hole; the metal wire is arranged on one side of the wire-carrying belt away from the first electrode block; a springback mechanism is arranged at one end of the base body, and a locking mechanism is arranged at the other end of the base body. According to the technical scheme, the continuous electric explosion spraying device for the inner wall of the pipe is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of electro - explosive spraying, in particular to a device for continuous electro - explosive spraying on the inner wall of a pipe. Background Art

[0002] With the continuous growth of energy demand, pipeline transportation, as the main way to transport oil and gas resources, its safety and durability have been increasingly emphasized. During the long - distance transportation of oil pipelines, due to the need to cross complex and variable geological environments and carry different media, the inner wall of the pipeline will be affected by multiple factors such as erosion, abrasion, and corrosion. Improving the protection ability of the pipeline inner wall has become an urgent problem to be solved.

[0003] Studies have shown that among the main reasons for pipeline failure, more than 80% is directly related to the corrosion and abrasion of the transported medium, and the proportion of pipeline failure caused by inner - wall corrosion is as high as 90%. This highlights the importance and urgency of pipeline inner - wall anti - corrosion and wear - resistant coating preparation technology. In the existing electro - explosive spraying process, due to the frictional effect between the carrier tape and the explosion chamber, the carrier tape is prone to breakage, thus affecting the spraying operation. Moreover, in the existing electro - explosive spraying process, a single explosion chamber is used. During long - term or continuous electro - explosive spraying operations, due to the lack of buffer cooling time for the explosion chamber, the explosion chamber will crack, deform, etc., which will seriously affect the spraying operation. Summary of the Invention

[0004] The purpose of the utility model is to provide a device for continuous electro - explosive spraying on the inner wall of a pipe, which is used to solve the technical problems that the carrier tape is prone to breakage and the explosion chamber will crack and deform during the existing electro - explosive spraying process. In view of this, the utility model is realized through the following solutions.

[0005] A device for continuous electro - explosive spraying on the inner wall of a pipe, comprising:

[0006] A base body, on either side of which there is an explosion groove, in which a plurality of explosion chambers are equidistantly arranged. On the side far from the explosion chamber, there are a plurality of first grooves, and the first grooves are arranged opposite to the edges of the explosion chambers;

[0007] A cylinder body, which wraps the outer surface of the base body. On the cylinder body, at a position opposite to any explosion chamber, there is a first through - hole, and on the side far from the first through - hole and at a position opposite to the edge of this explosion chamber, there is a second through - hole;

[0008] A first electrode block, which is arranged in the first groove;

[0009] A second electrode block, which is arranged in the second through - hole, and the first electrode block abuts against the second electrode block;

[0010] A ribbon carrier, a third through hole is provided in the base along the central axis, the ribbon carrier passes through the third through hole and abuts against the first electrode block;

[0011] A wire, arranged on the side of the ribbon carrier away from the first electrode block;

[0012] A resilient mechanism and a locking mechanism, the resilient mechanism is provided at one end of the base, and the locking mechanism is provided at the other end.

[0013] Compared with the prior art, the in-pipe wall continuous electro-explosion spraying device of the present utility model is used for spraying an anti-corrosion layer inside a pipeline. The spraying device utilizes a wire drawing mechanism and a moving mechanism. The moving mechanism is provided with a chassis. During the electro-explosion spraying process, the spraying device is connected to the moving mechanism. Specifically, the resilient mechanism of the spraying device can be connected to the moving mechanism, the wire drawing mechanism is connected to the ribbon carrier, and the wire drawing mechanism is used to pull the ribbon carrier and the base inside the pipeline in the direction of the wire drawing mechanism. Second electrode blocks are provided in both second through holes, and the first electrode block abuts against the second electrode block, the ribbon carrier abuts against the first electrode block, and a wire is arranged on the side of the ribbon carrier away from the first electrode block. When a power supply circuit is formed between the two second electrode blocks, a large current is introduced into the wire. Under the action of Joule heat, the wire instantly melts, becomes unstable, and finally explodes in the explosion chamber. After the explosion, the subsequent spraying particles are constrained by the first through hole of the cylinder body and are sprayed onto the inner surface of the pipeline at an extremely high speed, and then are rapidly cooled on the inner wall of the pipeline to form a coating on the inner wall of the pipeline. The above in-pipe wall continuous electro-explosion spraying device is provided with multiple explosion chambers. Under the pulling and releasing action of the wire drawing mechanism, the melting of the wire can be alternately carried out in different explosion chambers.

[0014] Exemplarily, a first through hole is provided on the cylinder body. The wire drawing mechanism pulls the ribbon carrier and the base to move at a constant speed. When the two second electrode blocks at the edge of the first explosion chamber in the moving direction of the base abut against the first electrode block in the second through hole, a power supply circuit is formed between the two second electrode blocks, a large current is introduced into the wire, the wire instantly melts, becomes unstable, and finally explodes in the first explosion chamber. The spraying particles are constrained by the first through hole of the cylinder body and are sprayed onto the inner surface of the pipeline at an extremely high speed, and then are rapidly cooled on the inner wall of the pipeline to form a coating. Under the continuous movement of the ribbon carrier and the base, when the two first electrode blocks at the edge of the second explosion chamber in the moving direction of the base abut against the second electrode block in the second through hole, a power supply circuit is formed between the two second electrode blocks, a large current is introduced into the wire, the wire instantly melts, becomes unstable, and finally explodes in the second explosion chamber. The spraying particles are constrained by the first through hole of the cylinder body and are sprayed onto the inner surface of the pipeline at an extremely high speed, and then are rapidly cooled on the inner wall of the pipeline to form a coating, and so on, which can realize the electro-explosion spraying process among multiple explosion chambers.

[0015] In the above technical solution of the present utility model, the locking mechanism is used to lock with the carrier tape and limit the forward distance of the carrier tape and the substrate during the process of the wire drawing mechanism pulling the carrier tape and the substrate. The elastic return mechanism is used to provide an elastic return force for the spraying device. For example, when the electro-explosive spraying process ends, the wire drawing mechanism and the locking mechanism release the carrier tape, and the elastic return mechanism rebounds the substrate to the initial position of the spraying device for the next cycle of spraying. During the above electro-explosive spraying process, the pipe can rotate along its central axis, and the moving mechanism can fix the spraying device at a position. When a cycle of spraying ends, the spraying device is moved to the next fixed point to continue the next cycle of electro-explosive spraying process. Through the above technical solution of the present utility model, while solving the technical problems that the carrier tape is prone to breakage during the existing electro-explosive spraying process and the explosion chamber will crack and deform, the spraying efficiency can be improved.

[0016] Furthermore, the inner pipe wall continuous electro-explosive spraying device of the present utility model further includes:

[0017] A grounded conductive pipe, which is connected to any one of the second electrode blocks on the outer surface of the cylinder body, and a fourth through hole is provided at a position on the grounded conductive pipe opposite to the first through hole;

[0018] A high-voltage conductive pipe, which is on the outer surface of the cylinder body and is connected to another second electrode block on one side of the inner surface of the grounded conductive pipe;

[0019] An insulating layer is provided between the grounded conductive pipe and the high-voltage conductive pipe.

[0020] Furthermore, in the inner pipe wall continuous electro-explosive spraying device of the present utility model, the elastic return mechanism includes a spring and a fixing plate, and the fixing plate is provided with a fifth through hole;

[0021] One end of the spring is connected to the substrate, and the other end is connected to the fixing plate. The carrier tape sequentially passes through the fifth through hole, the spring and the third through hole.

[0022] Furthermore, the inner pipe wall continuous electro-explosive spraying device of the present utility model further includes a support frame;

[0023] The support frame is provided at one end of the substrate away from the elastic return mechanism, and the locking mechanism is provided on the support frame, and the locking mechanism can slide horizontally on the support frame.

[0024] Furthermore, in the inner pipe wall continuous electro-explosive spraying device of the present utility model, sixth through holes and seventh through holes are oppositely arranged on the side surface of the grounded conductive pipe near one end of the locking mechanism;

[0025] The locking mechanism includes a tension spring and a blocking pendulum, and the blocking pendulum is provided with a connecting surface, an abutting surface and a blocking rod;

[0026] Any pair of the stop and swing members is connected to the support frame through the connecting surface, and the stop rods of this pair of stop and swing members respectively pass through the sixth through-hole and the seventh through-hole. The two ends of the tension spring are respectively connected to this pair of stop and swing members, and this pair of stop and swing members can lock the carrier tape through the abutting surface.

[0027] Further, in the device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention, when the abutting surfaces of any pair of the stop and swing members are arranged oppositely, the directions of the stop rods of the stop and swing members face the direction of the spring-back mechanism.

[0028] Further, in the device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention, the length of the sixth through-hole and / or the seventh through-hole is the same as the length of the explosion groove.

[0029] Further, the device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention further includes a traveling mechanism;

[0030] The traveling mechanism is arranged on the outer surface of the grounded conductive pipe.

[0031] Further, in the device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention, the traveling mechanisms are arranged on both sides of the fourth through-hole of the grounded conductive pipe along the central axis direction of the base body.

[0032] Further, in the device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention, the traveling mechanism includes universal wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0034] Figure 1 is a schematic internal structure diagram of a device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention;

[0035] Figure 2 is another schematic internal structure diagram of a device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention;

[0036] Figure 3 is a schematic cross-sectional structure diagram of a device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention;

[0037] Figure 4 is another schematic cross-sectional structure diagram of a device for continuously electro-explosive spraying on the inner wall of the pipe of the present invention;

[0038] Figure 5 is a schematic diagram of the locking mechanism of the present invention locking the carrier tape;

[0039] Figure 6 Schematic diagram of the locking mechanism releasing the carrier tape in the present utility model.

[0040] Reference numerals:

[0041] 1. Substrate; 1011. Explosion chamber; 102. First groove; 103. Third through-hole; 2. Cylinder; 201. First through-hole; 202. Second through-hole; 3. First electrode block; 4. Second electrode block; 5. Carrier tape; 6. Metal wire; 7. Rebound mechanism; 701. Spring; 702. Fixed plate; 7021. Fifth through-hole; 8. Locking mechanism; 801. Tension spring; 802. Blocking pendulum; 8021. Contact surface; 8022. Blocking rod; 9. Grounding conductive pipe; 901. Fourth through-hole; 902. Sixth through-hole; 903. Seventh through-hole; 10. High-voltage conductive pipe; 11. Insulating layer; 12. Support frame; 13. Traveling mechanism; 14. Pipeline. Detailed implementation manners

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0043] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined. The meaning of "several" is one or more unless otherwise specifically defined.

[0045] Studies have shown that among the main causes of pipeline failure, more than 80% is directly related to the corrosion and wear of the conveying medium, and the proportion of pipeline failure caused by inner wall corrosion is as high as 90%. This highlights the importance and urgency of pipeline inner wall anti-corrosion and wear-resistant coating preparation technology. In the existing electro-explosion spraying process, due to the frictional effect between the carrier tape and the explosion chamber, the carrier tape is prone to breakage, thus affecting the spraying operation. Moreover, in the existing electro-explosion spraying process, a single explosion chamber is used. During long-term or continuous electro-explosion spraying operations, due to the lack of buffer cooling time for the explosion chamber, phenomena such as cracking and deformation will occur in the explosion chamber, which will seriously affect the spraying operation.

[0046] Please refer to Figures 1 to 6 , to solve the above technical problems, the present utility model provides a device for continuous electro-explosion spraying on the inner wall of a pipe, including a base body 1, a cylinder 2, a first electrode block 3, a second electrode block 4, a carrier tape 5, a metal wire 6, a spring-back mechanism 7 and a locking mechanism 8; wherein, an explosion groove is provided on any side of the base body 1, and a plurality of explosion chambers 1011 are arranged at equal intervals in the explosion groove. A plurality of first grooves 102 are provided on the side away from the explosion chambers 1011, and the first grooves 102 are arranged opposite to the edges of the explosion chambers 1011; the cylinder 2 is wrapped around the outer surface of the base body 1, and a first through hole 201 is provided at a position on the cylinder 2 opposite to any explosion chamber 1011. On the side away from the first through hole 201 and at a position opposite to the edge of the explosion chamber 1011, a second through hole 202 is provided; the first electrode block 3 is arranged in the first groove 102; the second electrode block 4 is arranged in the second through hole 202, and the first electrode block 3 abuts against the second electrode block 4; a third through hole 103 is provided along the central axis of the base body 1, the carrier tape 5 passes through the third through hole 103 and abuts against the first electrode block 3; the metal wire 6 is arranged on the side of the carrier tape 5 away from the first electrode block 3; a spring-back mechanism 7 is provided at one end of the base body 1, and a locking mechanism 8 is provided at the other end.

[0047] Specific implementation process: The above-mentioned continuous electro-explosion spraying device for the inner wall of the pipe is used to spray an anti-corrosion layer inside the pipe 14. The spraying device utilizes a wire drawing mechanism and a moving mechanism. The moving mechanism is provided with a chassis. During the electro-explosion spraying process, the spraying device is connected to the moving mechanism. Specifically, the rebound mechanism 7 of the spraying device can be connected to the moving mechanism. The wire drawing mechanism is connected to the carrier tape 5, and the wire drawing mechanism is used to pull the carrier tape 5 and the substrate 1 inside the pipe 14 in the direction of the wire drawing mechanism. Second electrode blocks 4 are arranged in both of the two second through holes 202, and the first electrode block 3 abuts against the second electrode block 4, and the carrier tape 5 abuts against the first electrode block 3. A metal wire 6 is arranged on the side of the carrier tape 5 away from the first electrode block 3. When a power supply circuit is formed between the two second electrode blocks 4, a large current is introduced into the metal wire 6. The metal wire 6 instantaneously melts, becomes unstable under the action of Joule heat, and finally explodes in the explosion chamber 1011. After being constrained by the first through hole 201 of the cylinder body 2, the spraying particles are sprayed onto the inner surface of the pipe 14 at an extremely high speed, and then are rapidly cooled to form a coating on the inner wall of the pipe 14. The above-mentioned continuous electro-explosion spraying device for the inner wall of the pipe is provided with a plurality of explosion chambers 1011. Under the pulling and releasing action of the wire drawing mechanism, the melting of the metal wire 6 can be alternately carried out in different explosion chambers 1011. For example, the cylinder body 2 is provided with a first through hole 201. The wire drawing mechanism pulls the carrier tape 5 and the substrate 1 to move at a constant speed. When the two first electrode blocks 3 at the edge of the first explosion chamber 1011 in the moving direction of the substrate 1 abut against the second electrode blocks 4 in the second through holes 202, a power supply circuit is formed between the two second electrode blocks 4, and thus a large current is introduced into the metal wire 6 by means of air gap breakdown (breaking through the carrier tape). The metal wire 6 instantaneously melts, becomes unstable, and finally explodes in the first explosion chamber 1011. During this process, the first through hole 201 is aligned with the opening of the first explosion chamber 1011. The spraying particles ejected from the first explosion chamber 1011 are constrained by the first through hole 201 of the cylinder body 2 and are sprayed onto the inner surface of the pipe 14 at an extremely high speed, and then are rapidly cooled to form a coating on the inner wall of the pipe 14. Under the continuous movement of the carrier tape 5 and the substrate 1, when the two first electrode blocks 3 at the edge of the second explosion chamber 1011 in the moving direction of the substrate 1 abut against the second electrode blocks 4 in the second through holes 202, a power supply circuit is formed between the two second electrode blocks 4, a large current is introduced into the metal wire 6, the metal wire 6 instantaneously melts, becomes unstable, and finally explodes in the second explosion chamber 1011. The spraying particles are constrained by the first through hole 201 of the cylinder body 2 and are sprayed onto the inner surface of the pipe 14 at an extremely high speed, and then are rapidly cooled to form a coating on the inner wall of the pipe 14, and so on, so that the electro-explosion spraying process can be carried out between multiple explosion chambers 1011.

[0048] According to the structure and specific implementation process of the above-mentioned continuous electro-explosion spraying device for the inner wall of a pipe, the continuous electro-explosion spraying device for the inner wall of a pipe of the present utility model sets multiple explosion chambers 1011 in the base body 1, and alternately performs electro-explosion spraying operations in different explosion chambers 1011, which can leave sufficient buffer cooling time for the explosion chambers 1011, effectively avoiding technical problems such as cracking and deformation of a single explosion chamber 1011 caused by long-term or continuous spraying operations. In this electro-explosion spraying device, the carrier tape 5 passes through the third through hole 103 of the base body 1. Under the pulling action of the wire drawing mechanism, the carrier tape 5 and the base body 1, or it can be considered that the carrier tape 1 and the explosion chamber 1011 move in the same direction simultaneously. The carrier tape 5 will not have a direct frictional effect on the explosion chamber 1011, avoiding the phenomenon of the carrier tape 5 breaking due to long-term friction in the explosion chamber 1011. During the above electro-explosion spraying process, the pipe 14 can rotate along its central axis. The moving mechanism can fix the spraying device at one position. When the spraying of one cycle is completed, the moving mechanism can move the spraying device to the next fixed point and continue the electro-explosion spraying process of the next cycle. Through the above technical solutions, the technical problems that the carrier tape 5 is prone to breakage during the existing electro-explosion spraying process and the explosion chamber 1011 will crack or deform are solved.

[0049] Exemplarily, the above carrier tape 5 can be a flexible insulating plastic such as polyethylene. The carrier tape 5 is made of or composed of a flexible insulating plastic such as polyethylene, so that the carrier tape 5 has good insulation and heat resistance properties and can be recycled; the above base body 1 can be an impact-resistant insulating material. The base body 1 is prepared from or composed of an impact-resistant insulating material. The impact-resistant insulating material can be high-density polyethylene or ceramics. The power source of the above wire drawing mechanism can be a servo motor, or other driving components such as a motor or a DC reduction motor. Another exemplarily, a notch can be provided at one end of the first electrode block 3 close to the carrier tape 5. The setting of this notch can make the carrier tape 5 more easily pass through the third through hole 103. The setting of the first through hole 201 on the cylinder body 2 can prevent the cylinder body 2 from blocking the spraying particles ejected from the explosion chamber 1011.

[0050] Furthermore, the continuous electro-explosion spraying device for the inner wall of a pipe of the present utility model is provided with multiple explosion chambers 1011, which can further avoid the formation of air holes in the explosion chambers 1011 due to multiple electro-explosions, and further avoid unnecessary discharge and breakdown phenomena of the explosion chambers 1011. In this spraying device, the first electrode block 3 is arranged inside the base body 1, that is, the first electrode block 3 is arranged in the first groove 102. By adjusting the distance between two adjacent first grooves 102 on the base body 1, explosion chambers 1011 with different lengths can be set, so as to adjust the spraying amount of a single electro-explosion spraying, or the coating area of a single electro-explosion spraying on the inner surface of the pipeline to be sprayed; this spraying device also has the characteristics of being convenient for disassembly and assembly and simple operation.

[0051] Please refer to Figures 1 to 6 , as a possible implementation, the inner tube wall continuous electro-explosive spraying device of the present utility model further includes a grounding conductive tube 9 and a high-voltage conductive tube 10; the grounding conductive tube 9 is connected to any second electrode block 4 on the outer surface of the cylinder body 2, and a fourth through hole 901 is provided at a position on the grounding conductive tube 9 opposite to the first through hole 201; the high-voltage conductive tube 10 is on the outer surface of the cylinder body 2 and is connected to another second electrode block 4 on one side of the inner surface of the grounding conductive tube 9; an insulating layer 11 is provided between the grounding conductive tube 9 and the high-voltage conductive tube 10. With the above technical solution, both the grounding conductive tube 9 and the high-voltage conductive tube 10 can be concentric tube structures, so that the first electrode block 3 and the second electrode block 4 of the spraying device are coaxial. After being energized, the inductance of the loop can be reduced, and thus the energy loss of the capacitor in the energy supply system or the power supply system can be reduced; for example, the grounding conductive tube 9 is on the outer layer and the high-voltage conductive tube 10 is on the inner layer. During the operation of the spraying device, the input end of the energy supply system or the power supply system can be wire-connected to the high-voltage conductive tube 10, and the output end of the energy supply system or the power supply system can be wire-connected to the grounding conductive tube 9. Another example is that the grounding conductive tube 9 and the high-voltage conductive tube 10 are made of conductive materials, and the conductive materials can be metals such as silver, copper or aluminum, or alloys or conductive non-metallic materials. The insulating layer 11 can be a polyethylene layer, and the setting of the insulating layer 11 can prevent a short circuit between the grounding conductive tube 9 and the high-voltage conductive tube 10, ensuring the safe and stable operation of the spraying device.

[0052] Please refer to Figure 1 and Figure 2 , as a possible implementation, in the inner tube wall continuous electro-explosive spraying device of the present utility model, the rebound mechanism 7 includes a spring 701 and a fixing plate 702, and the fixing plate 702 is provided with a fifth through hole 7021; one end of the spring 701 is connected to the base body 1, and the other end is connected to the fixing plate 702, and the carrier tape 5 sequentially passes through the fifth through hole 7021, the spring 701 and the third through hole 103.

[0053] As described above, the moving mechanism is provided with a chassis, and the fixing plate 702 can be connected to the chassis of the moving mechanism, thereby fixing the spraying device at a specific spraying position inside the pipeline 14 to be sprayed. With the above technical solution, during the use of the spraying device, the rebounding mechanism 7 and the locking mechanism 8 can cooperate to alternately perform the electro-explosive spraying process among multiple explosion chambers 1011; for example, the chassis of the moving mechanism extends into the pipeline 14 to be sprayed, and the spraying device is connected to the moving mechanism inside the pipeline 14 to be sprayed through the fixing plate 702. During the operation of the spraying device, the wire drawing mechanism pulls the carrier tape 5 and the substrate 1 to move directionally through the locking mechanism 8. When the two first electrode blocks 3 at the edge of any explosion chamber 1011 in the moving direction of the substrate 1 are in contact with the second electrode block 4 in the second through hole 202, a power supply circuit is formed between the two second electrode blocks 4, and a large current is introduced into the metal wire 6. The metal wire 6 instantaneously melts, becomes unstable, and finally explodes in the first explosion chamber 1011. After being constrained by the first through hole 201 of the cylinder body 2, the spraying particles are sprayed onto the inner surface of the pipeline 14 at an extremely high speed, and then are rapidly cooled to form a coating on the inner wall of the pipeline 14; after completing a cycle of spraying operation, the locking mechanism 8 releases the carrier tape 5, and the carrier tape 5 and the substrate 1 contract through the pulling force of the rebounding mechanism 7 provided at one end of the substrate 1 away from the locking mechanism 8, that is, the spring 701, so that the carrier tape 5 and the substrate 1 automatically rebound to the initial position of the spraying device; for example, the spring 701 can adopt a steel wire rope structure. Compared with other structures, the steel wire rope structure is easier to be fixedly connected to the substrate and can improve the overall stability of the rebounding mechanism 7.

[0054] Please refer to Figure 1 and Figure 2 and Figure 5 and Figure 6 As a possible implementation manner, the continuous electro-explosive spraying device for the inner wall of the pipe of the present invention further includes a support frame 12; a support frame 12 is provided at one end of the substrate 1 away from the rebounding mechanism 7, and a locking mechanism 8 is provided on the support frame 12, and the locking mechanism 8 can slide horizontally on the support frame 12. With the above technical solution, a support frame 12 is provided at one end of the substrate 1 away from the rebounding mechanism 7, and the locking mechanism 8 can be provided on the support frame 12. Compared with directly providing the locking mechanism 8 at the end of the substrate 1, the setting of the support frame 12 can provide a more stable support surface for the locking mechanism 8. When the locking mechanism 8 is composed of multiple components, it is more convenient to integrate the locking mechanism 8 composed of multiple components on the support frame 12; for example, a chute can be horizontally provided on the support frame 12, and the locking mechanism 8 is connected to the support frame 12 through the chute, and the locking mechanism 8 can slide horizontally on the support frame 12.

[0055] Please refer to Figures 1 to 6, as a possible implementation, in the continuous electro-explosive spraying device for the inner wall of the pipe of the present utility model, a sixth through hole 902 and a seventh through hole 903 are oppositely arranged on the side surface of the grounding conductive pipe 9 near one end of the locking mechanism 8; the locking mechanism 8 includes a tension spring 801 and a stop pendulum 802, and the stop pendulum 802 is provided with a connecting surface, an abutting surface 8021 and a stop rod 8022; any pair of stop pendulums 802 are connected to the support frame 12 through the connecting surface, and the stop rods 8022 of this pair of stop pendulums 802 respectively pass through the sixth through hole 902 and the seventh through hole 903, and both ends of the tension spring 801 are respectively connected to this pair of stop pendulums 802, and this pair of stop pendulums 802 can be locked with the carrier tape 5 through the abutting surface 8021.

[0056] With the above technical solution, during the operation of the spraying device, under the pulling force of the wire drawing mechanism, the carrier tape 5 and the substrate 1 move simultaneously in a specific direction. The moving distance of the carrier tape 5 and / or the substrate 1 should be equal to the total length of multiple explosion chambers 1011. For this reason, the sixth through-hole 902 and the seventh through-hole 903 provided at the end of the grounded conductive tube 9 can limit the moving distance of the carrier tape 5 and the substrate 1 through the abutting action of the blocking pendulum 802, so that the moving distance of the carrier tape 5 and / or the substrate 1 is equal to the total length of multiple explosion chambers 1011. For example, when the abutting surfaces 8021 of any pair of blocking pendulums 802 are arranged oppositely, the direction of the blocking rod 8022 of the blocking pendulum 802 faces the direction of the spring-back mechanism 7, and the length of the sixth through-hole 902 and / or the seventh through-hole 903 is the same as the length of the explosion groove. For example, during the process of the wire drawing mechanism pulling the carrier tape 5 and the substrate 1 to move in a specific direction, the abutting surfaces 8021 of a pair of blocking pendulums 802 are parallel, thereby locking the carrier tape 5. The blocking pendulum 802 can slide horizontally on the support frame 12. When the blocking pendulum 802 moves to the end of the sixth through-hole 902 and / or the seventh through-hole 903 away from the spring-back mechanism 7, the blocking rod 8022 of the blocking pendulum 802 abuts against the sixth through-hole 902 and / or the seventh through-hole 903, restricting the further movement of the carrier tape 5 and the substrate 1. After a spraying cycle is completed, the wire drawing mechanism releases the carrier tape 5. Due to the pulling-back action of the spring-back mechanism 7 on the carrier tape 5 and / or the substrate 1, and under the action of the tension spring 801, a pair of blocking pendulums 802 rotate, making the abutting surfaces 8021 inclined and generating a gap between the two abutting surfaces 8021, so that the locking mechanism 8 releases the carrier tape 5, and the carrier tape 5 and the substrate 1 then automatically spring back to the initial position of the spraying device. During the above process, the blocking pendulum 802 is provided with a rotating wheel. After the tension spring 801 is connected to a pair of blocking pendulums 802, the rotating wheel of the blocking pendulum 802 should have a certain eccentric moment. A pair of blocking pendulums 802 can form an opening and closing structure through the abutting surfaces 8021, so as to realize the locking and release of the carrier tape 5. For example, before the spraying device performs spraying operation, the blocking pendulum 802 abuts against the sixth through-hole 902 and / or the seventh through-hole 903 at one end close to the spring-back mechanism. The rotating wheels of a pair of blocking pendulums 802 are blocked by the carrier tape 5 and cannot continue to rotate in the same direction. At this time, after the tension spring 801 stabilizes the rotation of the blocking pendulum 802, an eccentric moment is generated. When the spraying device starts to operate, under the pulling force of the wire drawing mechanism on the carrier tape 5, the locking mechanism will produce a self-locking effect, thereby enhancing the friction force between the rotating wheel and the carrier tape 5, so that the locking mechanism locks the carrier tape 5 and moves simultaneously in a specific direction with the carrier tape 5 until the blocking pendulum 802 of the locking mechanism abuts against the sixth through-hole 902 and / or the seventh through-hole 903 at the end away from the spring-back mechanism through the blocking rod 8022, realizing the limitation of the moving distance of the carrier tape 5 or the substrate 1.

[0057] Please refer to Figure 1 、 Figure 3 and Figure 4, as a possible implementation, the inner pipe wall continuous electro-explosion spraying device of the present utility model further includes a traveling mechanism 13; the traveling mechanism 13 is arranged on the outer surface of the grounded conductive pipe 9. With the above technical solution, the traveling mechanism 13 is mainly used to provide support for the spraying device, so as to avoid friction between the spraying device and the pipeline 14 during the spraying operation, and further avoid damage to the coating already formed in the pipeline 14. Further, shock waves will be generated during the electro-explosion process of the spraying device, causing the spraying device to vibrate. The setting of the traveling mechanism 13 can enable the spraying device to move smoothly in the pipeline 14, relieve the plastic deformation that occurs during the electro-explosion process of the spraying device, and further improve the service performance of the spraying device.

[0058] Please refer to Figure 1 and Figure 3 , as a possible implementation, in the inner pipe wall continuous electro-explosion spraying device of the present utility model, traveling mechanisms 13 are arranged on both sides of the fourth through hole 901 of the grounded conductive pipe 9 along the central axis direction of the base body 1. With the above technical solution, the grounded conductive pipe 9 can be tubular, and a pair of traveling mechanisms 13 can be arranged on both sides of the fourth through hole 901 of the grounded conductive pipe 9 along the central axis direction of the base body 1, and a pair of traveling mechanisms 13 can form a certain angle. Further, the spraying distance can be controlled by controlling the size of this angle; for example, when the heights of the traveling mechanisms 13 are the same, the larger the angle, the closer the spraying distance, and the smaller the angle, the farther the spraying distance; in another example, when the heights of the traveling mechanisms 13 are the same, the larger the angle formed by a pair of traveling mechanisms 13, the closer the distance between the explosion chamber 1011 and the pipeline 14 to be sprayed, that is, the closer the spraying distance, and the smaller the angle formed by a pair of traveling mechanisms 13, the farther the distance between the explosion chamber 1011 and the pipeline 14 to be sprayed, that is, the farther the spraying distance. For example, the traveling mechanism 13 can be a universal wheel or a universal ball. In another example, the traveling mechanism 13 is a universal ball, and the universal ball is fixedly connected to the grounded conductive pipe 9 through a hose clamp.

[0059] In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0060] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A continuous electric explosion spraying device for inner wall of a pipe, characterized in that: include: A base body, with an explosion groove on either side, a plurality of explosion cavities arranged at equal intervals in the explosion groove, a plurality of first grooves arranged on a side away from the explosion cavity, the first grooves being arranged opposite to the edge of the explosion cavity; A cylinder body is wrapped around the outer surface of the base, a first through hole is arranged on the cylinder body at a position opposite to any explosion cavity, and a second through hole is arranged on a side away from the first through hole and at a position opposite to the edge of the explosion cavity; A first electrode block, disposed in the first groove; A second electrode block is disposed in the second through hole, and the first electrode block abuts against the second electrode block; A carrier ribbon, wherein the substrate is provided with a third through hole along the central axis, the carrier ribbon passes through the third through hole and abuts against the first electrode block; A metal wire, arranged on a side of the carrier wire away from the first electrode block; A rebound mechanism and a locking mechanism, wherein one end of the base is provided with the rebound mechanism, and the other end is provided with the locking mechanism.

2. The continuous electric explosion spraying device for inner wall of pipe according to claim 1, characterized in that: Also includes: a grounding conductive tube connected to any of the second electrode blocks on the outer surface of the cylinder, wherein a fourth through hole is provided on the grounding conductive tube at a position opposite to the first through hole; A high-voltage conductive tube, on the outer surface of the cylinder and connected to another second electrode block on one side of the inner surface of the grounding conductive tube; An insulating layer is provided between the grounding conductive tube and the high-voltage conductive tube.

3. The continuous electric explosion spraying device for the inner wall of a pipe according to claim 2, characterized in that: The rebound mechanism comprises a spring and a fixing plate, and the fixing plate is provided with a fifth through hole; One end of the spring is connected to the base, and the other end is connected to the fixing plate. The carrier ribbon passes through the fifth through hole, the spring and the third through hole in sequence.

4. The continuous electric explosion spraying device for inner wall of pipe according to claim 3, characterized in that: Also includes a support frame; The support frame is arranged at one end of the base body away from the rebound mechanism, and the locking mechanism is arranged on the support frame. The locking mechanism can slide horizontally on the support frame.

5. The continuous electric explosion spraying device for inner wall of pipe according to claim 4, characterized in that: A sixth through hole and a seventh through hole are oppositely arranged on the side surface of the grounding conductive tube close to one end of the locking mechanism; The locking mechanism comprises a tension spring and a stop pendulum, wherein the stop pendulum is provided with a connecting surface, an abutting surface and a stop rod; Any pair of the pendulums is connected to the support frame through the connecting surface, and the baffle rods of the pair of pendulums pass through the sixth through hole and the seventh through hole respectively, and the two ends of the tension spring are respectively connected to the pair of pendulums, and the pair of pendulums can be locked with the ribbon through the abutment surface.

6. The continuous electric explosion spraying device for inner wall of pipe according to claim 5, characterized in that: When the abutting surfaces of any pair of the pendulum blocks are arranged opposite to each other, the direction of the pendulum block rod is toward the direction of the rebound mechanism.

7. The continuous electric explosion spraying device for inner wall of pipe according to claim 6, characterized in that: The length of the sixth through hole and / or the seventh through hole is the same as the length of the explosion groove.

8. The continuous electric explosion spraying device for inner wall of pipe according to claim 7, characterized in that: It also includes a walking mechanism; The walking mechanism is arranged on the outer surface of the grounded conductive tube.

9. The continuous electric explosion spraying device for inner wall of pipe according to claim 8, characterized in that: The walking mechanism is arranged on both sides of the fourth through hole of the grounding conductive tube along the central axis direction of the base.

10. The continuous electric explosion spraying device for inner wall of pipe according to claim 9, characterized in that: The walking mechanism comprises universal wheels.

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