Heat treatment device for carbon fiber reinforced metal sucker rod

Abstract

The utility model relates to a carbon fiber reinforced metal sucker rod heat treatment device which comprises a heat treatment device body, the heat treatment device body comprises a control cabinet, a heating box, a movable feeding and discharging device and a heating furnace, and the heating furnace is arranged outside the heating box and communicated with the heating box; the movable feeding and discharging device comprises a bottom supporting frame, and a movable track is installed on the bottom supporting frame. The heating box is fixedly mounted above one side of the moving track, and the storage box is mounted on the other side of the moving track and can horizontally move along the moving track; the control cabinet is installed on the side face of the heating box and electrically connected with the heating furnace and the movable feeding and discharging device. Curing and strengthening heat treatment of the carbon fiber coating layer are achieved, the binding force of carbon fibers, resin and the metal sucker rod is effectively improved, the corrosion resistance and the abrasion resistance of the sucker rod are enhanced, the service life of the sucker rod is prolonged, the oil well operation cost is reduced, and the economic benefits of oilfield exploitation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling and production, in particular to a heat treatment device for a carbon fiber reinforced metal pumping rod. Background Art

[0002] The sucker rod is a slender rod of the pumping well. It is connected to the bare rod at the top and the oil pump at the bottom, and plays the role of transmitting power. The wear resistance and corrosion resistance of the sucker rod determine and affect the operation cycle of the entire oil pumping equipment. The material of the sucker rod is generally medium-low carbon alloy steel that has been quenched and tempered. It is connected one by one with a coupling in the oil pipe and extends to the piston rod of the downhole oil pump to pump oil through reciprocating motion.

[0003] As the oil field enters the middle and late stages of development, the comprehensive water content is getting higher and higher, and water injection and other production-increasing measures are often used. In addition, the oil field reinjection water is basically sewage directly reinjected, resulting in a very harsh working environment for the pumping rod. Highly mineralized well fluid contains various corrosive media and corrosive microorganisms, especially those rich in Cl - , which greatly increases the corrosion rate of the polished rod. At the same time, the associated gas contains corrosive gases such as CO2 and H2S, which make the well fluid weakly acidic. - , CO2 and H2S corrosion has always been a world problem in oil production engineering. Moreover, the friction between the sucker rod and the inner wall of the oil pipe will generate heat energy, which will activate its surface. Under the action of corrosive production fluid, the corrosion rate of the sucker rod surface will be greatly accelerated. In addition, the influence of sand content, the influence of wax and scaling in the oil well, and the influence of the viscosity of the production fluid will also promote corrosion and eccentric wear on the sucker rod surface.

[0004] The long-term asymmetric alternating load and the combined effects of oil, gas, water and corrosive media make the sucker rod a very low reliability device in mechanical oil production. How to effectively control the corrosion and eccentric wear of the sucker rod has become an urgent task to achieve efficient and stable production in the middle and late stages of oil field development. According to statistics, surface failure of the sucker rod accounts for more than 90% of the failure of the sucker rod, and surface failure will also bring the hidden danger of fracture failure, which brings great inconvenience to on-site management.

[0005] In order to solve the problem of corrosion resistance and wear resistance, the conventional prevention and control measures currently taken for sucker rods mainly use electroplating or chemical plating methods and technologies to process chrome-plated sucker rods, nickel-plated sucker rods, tungsten-plated sucker rods and spray-welded sucker rods.

[0006] The conventional wear-resistant and anti-corrosion coating of the sucker rod has low bonding strength with the substrate. When used in the above-mentioned complex mining environment, the coating is prone to peeling, falling off, and wearing, forming an anti-corrosion and wear shortcoming. The effect is not very ideal and the cost is relatively high. The spray-welded coating of the spray-welded sucker rod has greatly improved bonding strength with the substrate, and has good anti-corrosion and wear resistance. However, after the rod body is spray-welded with the anti-corrosion alloy coating, secondary solid solution strengthening is required. High temperature will substantially reduce the substrate performance of the spray-welded sucker rod, thereby substantially reducing the overall fatigue resistance and reliability of the sucker rod, and the cost is relatively high.

[0007] In order to better solve the corrosion and wear resistance problems of sucker rods, the inventor conducted in-depth research on the anti-corrosion and eccentric wear technology of sucker rods. Ultimately, the carbon fiber coating technology was used to effectively improve the overall corrosion resistance and anti-eccentric wear performance of the sucker rods, with a high cost-effectiveness.

[0008] Carbon fiber refers to high-strength and high-modulus fiber with a carbon content of more than 90%. It is the highest in high temperature resistance among all chemical fibers. It is made of acrylic and viscose fibers and is carbonized by high temperature cracking. It is a high-end material for manufacturing aerospace and other industries. Carbon fiber is a new generation of reinforcing fiber, known as the "king of new materials" and "black gold". Carbon fiber has excellent mechanical properties and chemical stability. Its specific gravity is less than 1 / 4 of that of steel, and its strength is 6 to 10 times that of steel. It has the characteristics of low density, corrosion resistance, high temperature resistance, friction resistance, fatigue resistance, low thermal and moisture expansion coefficient, and excellent durability.

[0009] When the sucker rod is used in the oil well for a long time, a lot of oil and rust will adhere to its outer surface, which will not only corrode the sucker rod body, but also increase the friction between the sucker rod and the sealing box. When pulling out from the well, the oil adhered to the outer surface of the conventional sucker rod is easy to drip on the well site, which not only wastes crude oil, but also pollutes the environment, and also affects the operation efficiency and strength. The sucker rod coated with carbon fiber has excellent corrosion resistance and strong anti-adhesion, and has the characteristics of low friction coefficient and self-lubrication. It can effectively reduce the adhesion of oil and rust on the rod column surface, and can also effectively slow down the occurrence of waxing on the rod column surface, and can effectively reduce the occurrence of bare rod breakage accidents in corrosive environments, with high cost performance.

[0010] In the process of carbon fiber coating of sucker rod, the carbon fiber needs to be stretched and tensioned, soaked in liquid resin, squeezed and wound on the sucker rod after the resin is squeezed. When winding, the two ends of the sucker rod need to be clamped, tensioned and rotated, and then the carbon fiber winding device is moved back and forth to coat the carbon fiber on the sucker rod. After winding, it needs to be heat treated to fully combine the resin, carbon fiber and metal sucker rod. At present, there is no device on the market for heat treatment of sucker rods after carbon fiber winding.

[0011] In view of this, the utility model provides a heat treatment device for a carbon fiber reinforced metal sucker rod, which realizes the curing and strengthening heat treatment of the carbon fiber coating layer of the sucker rod, thereby effectively improving the bonding strength of the carbon fiber, resin and metal sucker rod, and at the same time eliminating the porosity of the carbon fiber layer, which is beneficial to enhancing the corrosion resistance and wear resistance of the sucker rod after the carbon fiber is wound, thereby extending the service life of the sucker rod, reducing the cost of oil well operation, and improving the economic benefits of oil field exploitation. Utility Model Content

[0012] The utility model aims to provide a heat treatment device for a carbon fiber reinforced metal sucker rod to solve the deficiencies in the prior art. The technical problem to be solved by the utility model is achieved through the following technical solutions.

[0013] A heat treatment device for a carbon fiber reinforced metal sucker rod comprises a heat treatment device body, the heat treatment device body comprises a control cabinet, a heating box, a mobile feeding and discharging device and a heating furnace, the heating furnace is arranged outside the heating box and is connected to the heating box, and is used to provide heat to the heating box; the mobile feeding and discharging device comprises a bottom support frame, and a moving track is installed on the bottom support frame; the heating box is fixedly installed above one side of the moving track, and a storage box is installed on the other side of the moving track, and the storage box is used to store the sucker rod, and the storage box can be moved along the The movable track moves horizontally, thereby sending the sucker rod into or out of the heating box; a temperature control instrument is installed in the heating box for detecting and displaying the temperature in the heating box; the control cabinet is installed on the side of the heating box and is electrically connected to the heating furnace and the mobile loading and unloading device respectively. The control cabinet is used to control the temperature in the heating furnace and the heating time of the heating furnace. The control cabinet is also used to control the opening and closing of the door of the heating box and the movement of the storage box relative to the mobile loading and unloading device, so that the storage box automatically enters and exits the heating box.

[0014] Preferably, a hot air duct is installed in the heating box, the hot air duct is connected to the heating furnace, and a plurality of evenly arranged hot air outlets are opened on the hot air duct.

[0015] Preferably, a blower is provided between the heating furnace and the hot air duct, and the blower is used to send the hot air from the heating furnace into the hot air duct.

[0016] Preferably, an electric heating plate is provided in the heating furnace.

[0017] Preferably, the mobile feeding and discharging device comprises a mobile driving device, and the mobile driving device is respectively connected to the storage box and the mobile track, and is used for driving the storage box to move horizontally relative to the mobile track.

[0018] Preferably, the mobile drive device includes a gear, a rack and a motor, the rack is installed on the mobile track, the motor is installed on the storage box, the output end of the motor faces downward and is coaxially fixed with the gear, the gear and rack are meshed with each other, and the motor is electrically connected to the control cabinet.

[0019] Preferably, rollers are installed at the bottom of the storage box, and the rollers abut against the movable track.

[0020] In the utility model, the sucker rod is tightened and fixed by a tightening rotating device to prevent the middle part of the longer sucker rod from bending downward, the carbon fiber line is fully soaked in liquid resin and fixed to one end of the sucker rod by a winding device, the sucker rod is driven to rotate by the tightening rotating device, and at the same time, the carbon fiber coil installed with the carbon fiber line is moved along the axis of the sucker rod by the winding device, so that the carbon fiber line soaked with resin is wound and covered on the outside of the sucker rod. After the winding is completed, the sucker rod is placed in a storage box, the door of the heating box is opened by the control cabinet, the storage box is moved to the heating box by the control cabinet, and then the door of the heating box is closed by the control cabinet, the heating furnace is started by the control cabinet for heating, and the heat in the heating furnace is passed into the heating box. A temperature control instrument is installed in the heating box, which can detect the temperature in the heating box and transmit the temperature value to the control cabinet. The control cabinet controls the heating temperature and heating time of the heating furnace according to the temperature in the heating box, and ensures that the temperature in the heating box is stable. After the heat treatment is completed, the control cabinet controls the heating furnace to stop heating, controls the door of the heating box to open, and controls the storage box to move out of the heating box, thus completing the heat treatment work.

[0021] The utility model provides a heat treatment device for a carbon fiber reinforced metal sucker rod. The entire heat treatment process is closed-loop controlled by a control cabinet, which realizes the solidification and strengthening heat treatment of the carbon fiber coating layer, effectively improves the bonding strength of the carbon fiber, resin and metal sucker rod, and eliminates the porosity of the carbon fiber layer, thereby enhancing the corrosion resistance and wear resistance of the sucker rod, thereby extending the service life of the sucker rod, reducing the cost of oil well operation, and improving the economic benefits of oil field exploitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the heating box of the utility model as a side-opening type;

[0024] Figure 3 This is a schematic diagram of the structure of the heating box of the utility model being a front-opening type;

[0025] Figure 4It is a schematic structural diagram of a tensioning and rotating device and a winding device in an embodiment of the utility model;

[0026] The reference numerals in the accompanying drawings are: 1. tensioning and rotating device, 2. winding device, 3. heat treatment device body, 31. control cabinet, 32. heating box, 33. hot air duct, 34. temperature control instrument, 35. mobile feeding and discharging device, 36. heating furnace, 37. blower, 38. sucker rod. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] A heat treatment device for carbon fiber reinforced metal sucker rods, the improvement of which is that: it includes a heat treatment device body 3, the heat treatment device body 3 includes a control cabinet 31, a heating box 32, a mobile feeding and discharging device 35 and a heating furnace 36, the heating furnace 36 is arranged outside the heating box 32 and is connected to the heating box 32, and is used to provide heat to the heating box 32; the mobile feeding and discharging device 35 includes a bottom support frame, and a moving track is installed on the bottom support frame; the heating box 32 is fixedly installed above one side of the moving track, and a storage box is installed on the other side of the moving track, and the storage box is used to store the sucker rod 38, and the storage box can be moved along The movable track moves horizontally, thereby sending the sucker rod 38 into or out of the heating box 32; a temperature control instrument 34 is installed in the heating box 32, which is used to detect and display the temperature in the heating box 32; the control cabinet 31 is installed on the side of the heating box 32, and is electrically connected to the heating furnace 36 and the mobile loading and unloading device 35 respectively, and the control cabinet 31 is used to control the temperature in the heating furnace 36 and control the heating time of the heating furnace 36. The control cabinet 31 is also used to control the opening and closing of the door of the heating box 32 and the movement of the storage box relative to the mobile loading and unloading device 35, so that the storage box automatically enters and exits the heating box 32.

[0029] In this embodiment, refer to Figures 1 to 4As shown, the sucker rod 38 is tightened and fixed by the tensioning rotating device 1 to prevent the middle part of the longer sucker rod from bending downward, and the carbon fiber wire is fully immersed in liquid resin and fixed to one end of the sucker rod 38 by the winding device 2. The sucker rod 38 is driven to rotate by the tensioning rotating device 1. At the same time, the carbon fiber reel installed with the carbon fiber wire is moved along the axial direction of the sucker rod 38 by the winding device 2, so that the carbon fiber wire soaked with resin is wound and covered on the outside of the sucker rod 38. After winding, the sucker rod 38 is placed in the storage box, and the control cabinet 31 is used to control the door of the heating box 32 to open. The control cabinet 31 controls the storage box to move into the heating box 32, and then the control cabinet 31 controls the door of the heating box 32 to close. The control cabinet 31 starts the heating furnace 36 for heating, and the heat in the heating furnace 36 is passed into the heating box 32. A temperature control instrument 34 is installed in the heating box 32, which can detect the temperature in the heating box 32 and transmit the temperature value to the control cabinet 31. The control cabinet 31 controls the heating temperature and heating time of the heating furnace 36 according to the temperature in the heating box 32, and ensures that the temperature in the heating box 32 is stable and will not damage the mechanical properties of the metal matrix of the sucker rod 38, and can ensure the curing and strengthening of the carbon fiber coating soaked with resin, thereby improving the bonding strength between the carbon fiber coating and the metal matrix of the sucker rod 38, and eliminating the porosity of the carbon fiber coating, thereby greatly enhancing the corrosion resistance and wear resistance of the carbon fiber wrapped sucker rod. After the heat treatment is completed, the control cabinet 31 controls the heating furnace 36 to stop heating, controls the door of the heating box 32 to open, and controls the storage box to move out of the heating box 32, thus completing the heat treatment work. Figure 2 As shown, the storage box can be on the front side of the heating box 32, or it can be Figure 3 As shown in the figure, the storage box is at the end of the heating box 32, that is, the heating box 32 can be side-opened or front-opened, which can be set according to the space of the site. The storage box is provided with a multi-layer support frame, which can be placed with multi-layer sucker rods 38 to improve the heat treatment efficiency. The control cabinet 31 can be provided with a touch screen and a display screen, which can display parameters such as heat treatment temperature, heat treatment time, heating power, and movement speed of the storage box in real time, and can display faults and have automatic alarm functions.

[0030] The present embodiment provides a heat treatment device for a carbon fiber reinforced metal sucker rod, in which the entire heat treatment process is closed-loop controlled by a control cabinet, thereby achieving the solidification and strengthening heat treatment of the carbon fiber coating layer, effectively improving the bonding strength of the carbon fiber, resin and metal sucker rod, while eliminating the porosity of the carbon fiber layer, enhancing the corrosion resistance and wear resistance of the sucker rod, thereby extending the service life of the sucker rod, reducing the cost of oil well operations, and improving the economic benefits of oil field exploitation.

[0031] Furthermore, a hot air duct 33 is installed in the heating box 32 , and the hot air duct 33 is connected to the heating furnace 36 . The hot air duct 33 is provided with a plurality of evenly arranged hot air outlets.

[0032] In this embodiment, the hot air duct 33 and the evenly arranged hot air outlets thereon can make the hot air entering the heating box 32 more uniform, so that the sucker rod 38 wrapped with carbon fiber wire is heated more evenly and the heat treatment effect is better.

[0033] Furthermore, a blower 37 is provided between the heating furnace 36 and the hot air duct 33 , and the blower 37 is used to send the hot air from the heating furnace 36 into the hot air duct 33 .

[0034] Furthermore, an electric heating plate is provided in the heating furnace 36 .

[0035] In this embodiment, the electric heating plate can be electrically heated to a suitable temperature under the control of the control cabinet 31, and the start and stop of the electric heating plate can be controlled.

[0036] Furthermore, the mobile feeding and discharging device 35 includes a mobile driving device, which is respectively connected to the storage box and the moving track, and is used to drive the storage box to move horizontally relative to the moving track.

[0037] Furthermore, the mobile drive device includes a gear, a rack and a motor, the rack is installed on the mobile track, the motor is installed on the storage box, the output end of the motor faces downward and is coaxially fixed with the gear, the gear and the rack are meshed with each other, and the motor is electrically connected to the control cabinet 31.

[0038] In this embodiment, when the storage box moves, the control cabinet 31 controls the motor transmission to drive the gear to rotate, and the gear and the rack engage with each other, thereby driving the storage box to move horizontally relative to the moving track along the long side direction of the rack.

[0039] Furthermore, a roller is installed at the bottom of the storage box, and the roller is in contact with the movable track.

[0040] In this embodiment, the provision of the rollers enables the storage box to move more steadily and smoothly.

[0041] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0045] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0046] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat treatment device for a carbon fiber reinforced metal sucker rod, characterized in that: The invention comprises a heat treatment device body (3), wherein the heat treatment device body (3) comprises a control cabinet (31), a heating box (32), a movable feeding and discharging device (35) and a heating furnace (36), wherein the heating furnace (36) is arranged outside the heating box (32) and is connected to the heating box (32) for providing heat to the heating box (32); the movable feeding and discharging device (35) comprises a bottom support frame, and a movable track is installed on the bottom support frame; the heating box (32) is fixedly installed above one side of the movable track, and a storage box is installed on the other side of the movable track, and the storage box is used to store the sucker rod (38), and the storage box can be moved horizontally along the movable track, so as to move the sucker rod (38) to the bottom support frame; The sucker rod (38) is sent into or out of the heating box (32); a temperature control instrument (34) is installed in the heating box (32) for detecting and displaying the temperature in the heating box (32); the control cabinet (31) is installed on the side of the heating box (32) and is electrically connected to the heating furnace (36) and the mobile feeding and discharging device (35) respectively. The control cabinet (31) is used to control the temperature in the heating furnace (36) and the heating time of the heating furnace (36). The control cabinet (31) is also used to control the opening and closing of the door of the heating box (32) and the movement of the storage box relative to the mobile feeding and discharging device (35) so that the storage box automatically enters and exits the heating box (32).

2. The heat treatment device for a carbon fiber reinforced metal sucker rod according to claim 1, characterized in that: A hot air duct (33) is installed in the heating box (32), the hot air duct (33) is connected to the heating furnace (36), and a plurality of evenly arranged hot air outlets are opened on the hot air duct (33).

3. The heat treatment device for a carbon fiber reinforced metal sucker rod according to claim 2, characterized in that: A blower (37) is provided between the heating furnace (36) and the hot air duct (33), and the blower (37) is used to send the hot air from the heating furnace (36) into the hot air duct (33).

4. The heat treatment device for a carbon fiber reinforced metal sucker rod according to claim 1, characterized in that: An electric heating plate is arranged in the heating furnace (36).

5. The heat treatment device for carbon fiber reinforced metal sucker rod according to claim 1, characterized in that: The mobile feeding and discharging device (35) comprises a mobile driving device, which is respectively connected to the storage box and the mobile track and is used to drive the storage box to move horizontally relative to the mobile track.

6. The heat treatment device for carbon fiber reinforced metal sucker rod according to claim 5, characterized in that: The mobile drive device comprises a gear, a rack and a motor, wherein the rack is mounted on the mobile track, the motor is mounted on the storage box, the output end of the motor faces downward and is coaxially fixedly connected to the gear, the gear and the rack are meshed with each other, and the motor is electrically connected to the control cabinet (31).

7. The heat treatment device for carbon fiber reinforced metal sucker rod according to claim 6, characterized in that: A roller is installed at the bottom of the storage box, and the roller abuts against the moving track.

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