CN116145120A - Device and method for chemical plating on surface of oil pipe - Google Patents

Abstract

The application discloses a device and a method for oil pipe surface chemical plating, and belongs to the technical field of surface protection. The device for chemically plating the surface of the oil pipe comprises a U-shaped frame, a processing tank, a polishing mechanism, a drying mechanism and a control mechanism; the top of the U-shaped frame is provided with a transmission mechanism and a lifting mechanism, the transmission mechanism is in sliding connection with the lifting mechanism, and one side of the lifting mechanism away from the transmission mechanism is provided with a clamping mechanism; the polishing mechanism, the treatment tank and the drying mechanism are sequentially arranged at the bottom of the U-shaped frame, and the treatment tank consists of an alkaline washing tank, a water washing tank, a pickling tank and an electroless plating tank; the control mechanism is arranged on one side of the U-shaped frame and is electrically connected with the transmission mechanism, the lifting mechanism, the clamping mechanism, the alkaline washing tank, the chemical plating tank and the drying mechanism. The device and the method for chemically plating the surface of the oil pipe can simultaneously chemically plate the inner wall and the outer wall of the oil pipe sample piece, have high degree of automation, effectively improve the working efficiency and the product yield and reduce the cost.

Description

Device and method for chemical plating on surface of oil pipe

Technical Field

The application relates to a device and a method for oil pipe surface chemical plating, and belongs to the technical field of surface protection.

Background

In the oil and gas industry, carbon steel is widely used for the production of oil casings due to its low cost and good mechanical properties. However, severe corrosion environments (e.g., high temperature, high pressure, hypersalinity, corrosive gases, solid particulates, etc.) during oil and gas extraction often cause serious corrosion problems for carbon steel tubing. While conventional corrosion protection measures (e.g., corrosion resistant alloys, corrosion inhibitors, electrochemical protection, etc.) can be effective in slowing the corrosion of carbon steel in some environments, their high initial investment and continued operating costs or specific processes limit their use in the oil and gas industry. In contrast, coating protection is an effective method of improving the physical and chemical properties of carbon steel, meeting the dual requirements of corrosion resistance and economic cost. Among them, electroless nickel-plated alloy plating layers (such as ni—p plating layers, etc.) have been widely used for corrosion protection of pipes in various industrial environments due to their excellent wear resistance and corrosion resistance, good mechanical properties, and simple manufacturing processes, etc.

At present, some nickel-base alloy anti-corrosion coating oil pipes which are mature exist in China, but the nickel-base alloy anti-corrosion coating oil pipes all adopt an electroplating technology, have obvious differences with an electroless plating technology, and the preparation equipment and the preparation technology cannot be used for preparing the electroless coating on the surface of the oil pipe. Compared with the electroplating coating manufacturing technology, the chemical plating coating manufacturing technology is simple, does not need to additionally arrange electrodes and consume electric energy, and is beneficial to reducing the cost. In particular, electroless plating is not affected by the structure, shape, size, etc. of the sample, and can ensure uniformity of thickness of each surface plating layer of the sample, so that the range of samples suitable for processing is wider than that of electroplating technology.

In the scientific research angle, the corrosion resistance and the environmental compatibility of the chemical plating layer are mainly evaluated by adopting standard block samples. However, the standard block sample coating preparation process cannot be directly applied to the preparation of a complete oil pipe surface coating; further, the actual service state of the standard block-shaped test sample and the complete oil pipe is greatly different, and the corrosion condition of the coated oil pipe cannot be truly reflected. Therefore, in order to more comprehensively evaluate the corrosion resistance of the coated oil pipe, performance evaluation of the coated oil pipe is required. However, the device for preparing the chemical plating layer on the surface of the complete oil pipe in the laboratory at present has not been reported yet.

Disclosure of Invention

In order to solve the problems, the device and the method for chemically plating the surface of the oil pipe can simultaneously chemically plate the inner wall and the outer wall of the oil pipe sample, are high in automation degree, effectively improve the working efficiency and the product yield and reduce the cost.

The invention adopts the following technical scheme:

according to one aspect of the application, there is provided an apparatus for electroless plating of an oil pipe surface, comprising a U-shaped frame, a treatment tank, a polishing mechanism, a drying mechanism and a control mechanism;

the top of the U-shaped frame is provided with a transmission mechanism and a lifting mechanism, the transmission mechanism is in sliding connection with the lifting mechanism, and a clamping mechanism is arranged on one side of the lifting mechanism away from the transmission mechanism;

the polishing mechanism, the treatment tank and the drying mechanism are sequentially arranged at the bottom of the U-shaped frame, and the treatment tank consists of an alkaline washing tank, a water washing tank, an acid washing tank and an electroless plating tank;

the control mechanism is arranged on one side of the U-shaped frame and is electrically connected with the transmission mechanism, the lifting mechanism, the clamping mechanism, the alkaline washing tank, the chemical plating tank and the drying mechanism.

Optionally, the lifting mechanism comprises an upper platform and a lower platform, the upper end of the upper platform is provided with a first motor and a winch, the first motor is in driving connection with the winch, a traction chain is wound on the winch, and the free end of the traction chain penetrates through the upper platform and is connected with the lower platform;

and a telescopic frame is further arranged between the upper platform and the lower platform.

Optionally, the fixture includes second motor, rotation axis and anchor clamps, the second motor with the rotation axis drive connection, the second motor sets up the upper end of lower platform, the rotation axis sets up the lower extreme of lower platform, the anchor clamps set up the lower extreme of rotation axis.

Optionally, the polishing mechanism comprises a base, the base sets up the bottom of U type frame, and the slide rail has been seted up to its upper end, be provided with two sets of first sliders in the slide rail, every group be provided with two polishing sticks on the first slider, two the bottom of polishing stick is passed through the elastic component and is connected.

Optionally, the alkaline washing tank, the water washing tank, the acid washing tank and the chemical plating tank are all arranged at the bottom of the U-shaped frame, liquid discharge pipes are arranged at the bottoms of the alkaline washing tank, the water washing tank, the acid washing tank and the chemical plating tank, and liquid discharge valves are arranged on the liquid discharge pipes.

Optionally, heating elements are arranged at the periphery and the bottom of the alkaline washing tank, and thermocouples are inserted in the heating elements;

heating elements are arranged at the periphery and the bottom of the chemical plating tank, and thermocouples are inserted in the heating elements.

Optionally, the transmission mechanism includes lead screw and third motor, the third motor with the lead screw drive is connected, the both ends of lead screw with the both ends of U type frame are connected respectively, the upper end of upper platform is provided with the second slider, the second slider slides and sets up on the lead screw.

Optionally, the drying mechanism includes barrel and air compressor, the barrel sets up the bottom of U type frame, air compressor sets up one side of U type frame, all be provided with the venthole on the lateral wall and the diapire of barrel, air compressor pass through the pipeline with the venthole links to each other.

Optionally, the control mechanism includes box, touch digital display panel and built-in procedure, touch digital display panel sets up the side of box, built-in procedure sets up in the box, built-in procedure is controlled by touch digital display panel, controls heating element, first motor, second motor, third motor and air compressor through built-in procedure.

According to yet another aspect of the present application, there is provided a method of electroless plating of an oil pipe surface, comprising the steps of:

(1) Fixing an oil pipe sample on a clamp, setting the liquid temperatures in an alkaline washing tank and an electroless plating tank on a touch type digital display panel, and controlling a heating element to heat the liquid in the alkaline washing tank and the electroless plating tank to the set temperature according to instructions received by a built-in program;

(2) Firstly, starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper part of the polishing rods, then starting a first motor, controlling a traction chain to extend to drive a lower platform to descend, arranging an oil pipe sample between two polishing rods connected by an elastic piece, and then starting the second motor, wherein a rotating shaft drives the oil pipe sample to rotate, so that the polishing rods polish the inner wall and the outer wall of the oil pipe sample;

(3) Firstly, starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper part of a washing tank, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, immersing an oil pipe sample in liquid of the washing tank, and then starting a second motor, wherein a rotating shaft drives the oil pipe sample to rotate to clean the oil pipe sample;

(4) Firstly, starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper part of a cylinder, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, placing an oil pipe sample in the cylinder, then starting an air compressor, spraying gas into the cylinder through a gas outlet hole, finally starting the second motor, and driving the oil pipe sample to rotate by a rotating shaft to dry the oil pipe sample;

(5) Firstly starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper part of an alkaline washing tank, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, immersing an oil pipe sample in liquid of the alkaline washing tank, then starting a second motor, driving the oil pipe sample to rotate by a rotating shaft, removing oil from the oil pipe sample, and finally sequentially repeating the steps (3) and (4);

(6) Firstly starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the position above a pickling tank, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, immersing an oil pipe sample in liquid of the pickling tank, then starting the second motor, driving the oil pipe sample to rotate by a rotating shaft, pickling the oil pipe sample, and finally sequentially repeating the steps (3) and (4);

(7) Firstly, starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper side of an electroless plating tank, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, immersing an oil pipe sample in liquid of the electroless plating tank, then starting a second motor, driving an oil pipe sample to rotate by a rotating shaft, carrying out electroless plating on the oil pipe sample, and finally sequentially repeating the steps (3) and (4) to obtain the oil pipe sample after electroless plating.

Benefits of the present application include, but are not limited to:

1. the device for chemically plating the surface of the oil pipe can be used for simultaneously chemically plating the inner wall and the outer wall of the oil pipe sample piece to obtain the anti-corrosion coating meeting the quality requirement, and has high automation degree; in addition, the device not only can be used for experimental teaching and basic scientific research of performance evaluation of the oil pipe with the coating in a laboratory, but also can provide theoretical and technical support for industrial application of the chemical coating corrosion prevention technology on the surface of the oil pipe.

2. According to the oil pipe surface chemical plating device, the first motor, the winch and the traction chain are arranged, so that the upper platform and the lower platform are conveniently linked, the lower platform is driven to do lifting motion along the vertical direction, and the telescopic frame plays a role in maintaining the stability of the lifting mechanism; the oil pipe sample is convenient to clamp and is driven to rotate by arranging the second motor, the rotating shaft and the clamp, so that corresponding treatment operation is performed; through setting up lead screw, third motor and second slider, be convenient for drive elevating system, fixture and oil pipe sample simultaneously along the reciprocating motion of horizontal direction.

3. According to the oil pipe surface chemical plating device, the first sliding blocks are arranged, so that the distance between the two groups of first sliding blocks can be conveniently adjusted according to the diameter of an oil pipe sample; the polishing rod is arranged on the first sliding block and used for removing oxide skin attached to the inner wall and the outer wall of the oil pipe sample piece, and the surface of the oil pipe sample piece reaches proper roughness, so that the chemical plating is facilitated; the elastic pieces are arranged at the bottoms of the two polishing rods on each group of first sliding blocks, so that the oil pipe sample can be fastened; in the polishing process, the inner wall and the outer wall of the oil pipe are contacted with the polishing rod, and the inner wall and the outer wall of the oil pipe are polished simultaneously by rotating the oil pipe sample.

4. According to the oil pipe surface chemical plating device, the alkaline washing tank, the water washing tank, the acid washing tank and the chemical plating tank are arranged, so that the oil pipe sample is convenient to carry out alkaline washing treatment, water washing treatment, acid washing treatment and chemical plating treatment; the liquid discharge pipes and the liquid discharge valves are arranged at the bottoms of the tank bodies, so that the treated waste liquid can be conveniently controlled to be discharged from the bottoms of the tank bodies; heating pieces are arranged at the periphery and the bottom of the alkaline washing tank and the chemical plating tank, so that the liquid is ensured to be heated uniformly; thermocouples are inserted into the alkaline washing tank and the chemical plating tank, so that the temperature of liquid in the tank can be conveniently monitored in real time, and the liquid is fed back to the touch type digital display panel.

5. According to the oil pipe surface chemical plating device, residual moisture on the inner wall and the outer wall of an oil pipe sample is conveniently purged by arranging the cylinder, the air outlet and the air compressor; through setting up box, touch digital display panel and built-in procedure, the piece that generates heat, first motor, second motor, third motor and air compressor are automatic to be operated according to setting for mode and flow to convenient control.

6. According to the oil pipe surface chemical plating method, the inner wall and the outer wall of the oil pipe sample piece can be plated simultaneously, the operation is simple, the implementation is easy, the device for the oil pipe surface chemical plating in the whole process automatically operates, the manpower resource investment is reduced, and the plating preparation efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic structural diagram of an apparatus for electroless plating of an oil pipe surface according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of another state of the apparatus for electroless plating of an oil pipe surface according to the embodiment of the present application.

Fig. 3 is a schematic structural view of a lifting mechanism and a clamping mechanism according to an embodiment of the present application.

Fig. 4 is a schematic structural view of a polishing mechanism according to an embodiment of the present application.

Fig. 5 is a flow chart of a method of electroless plating of an oil pipe surface according to an embodiment of the present application.

List of parts and reference numerals:

1. the device comprises a U-shaped frame, 2, an oil pipe sample piece, 3, an alkaline washing tank, 4, a water washing tank, 5, a pickling tank, 6, an electroless plating tank, 7, an upper platform, 8, a lower platform, 9, a first motor, 10, a winch, 11, a traction chain, 12, a telescopic frame, 13, a second motor, 14, a rotating shaft, 15, a clamp, 16, a base, 17, a sliding rail, 18, a first sliding block, 19, a polishing rod, 20, an elastic piece, 21, a liquid discharge pipe, 22, a liquid discharge valve, 23, a thermocouple, 24, a thermocouple sleeve, 25, a screw rod, 26, a third motor, 27, a second sliding block, 28, a fixed platform, 29, a cylinder, 30, an air compressor, 31, an air outlet hole, 32, a box, 33 and a touch digital display panel.

Detailed Description

In order to more clearly illustrate the general concepts of the present application, a detailed description is provided below by way of example in connection with the accompanying drawings.

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc. indicate or refer to an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 4, the embodiment provides an oil pipe surface electroless plating device, which comprises a U-shaped frame 1, a processing tank, a polishing mechanism, a drying mechanism and a control mechanism; the top of the U-shaped frame 1 is provided with a transmission mechanism and a lifting mechanism, and the transmission mechanism is in sliding connection with the lifting mechanism, so that the oil pipe sample 2 can be conveniently brought to a proper position; a clamping mechanism is arranged on one side of the lifting mechanism, which is far away from the transmission mechanism, and is used for fixing the oil pipe sample and driving the oil pipe sample to rotate; the polishing mechanism, the treatment tank and the drying mechanism are sequentially arranged at the bottom of the U-shaped frame 1, so that the design is reasonable, and the oil pipe sample can be subjected to corresponding operation treatment; the treatment tank consists of an alkaline washing tank 3, a water washing tank 4, a pickling tank 5 and an electroless plating tank 6, so that oil removal treatment, water washing treatment, acid washing treatment and electroless plating treatment can be conveniently carried out on the oil pipe sample; the control mechanism is arranged on one side of the U-shaped frame 1 and electrically connected with the transmission mechanism, the lifting mechanism, the clamping mechanism, the alkaline washing tank 3, the chemical plating tank 6 and the drying mechanism, so that the operation of the transmission mechanism, the lifting mechanism, the clamping mechanism, the alkaline washing tank 3, the chemical plating tank 6 and the drying mechanism is conveniently controlled.

Further, the lifting mechanism comprises an upper platform 7 and a lower platform 8, a first motor 9 and a winch 10 are arranged at the upper end of the upper platform 7, the first motor 9 is in driving connection with the winch 10, and the winch 10 is controlled to rotate through the first motor 9; a traction chain 11 is wound on the winch 10, and the free end of the traction chain 11 passes through the upper platform 7 and is connected with the lower platform 8, so as to drive the lower platform 8 to move up and down; and a telescopic frame 12 is further arranged between the upper platform 7 and the lower platform 8, and the telescopic frame 12 moves up and down synchronously along with the traction chain 11 and the lower platform 8, so that the lifting mechanism is kept stable.

Further, the clamping mechanism comprises a second motor 13, a rotating shaft 14 and a clamp 15, wherein the second motor 13 is in driving connection with the rotating shaft 14, and the rotating shaft 14 is controlled to rotate through the second motor 13; the second motor 13 sets up the upper end at lower platform 8, and rotation axis 14 sets up the lower extreme at lower platform 8, and anchor clamps 15 set up the lower extreme at rotation axis 14 for centre gripping oil pipe sample 2 to drive it and rotate.

Specifically, the clamp 15 is in direct contact with the oil pipe sample 2, and in order to avoid corrosion caused by contact of dissimilar metals, the clamp 15 is made of nonmetal, and meanwhile, does not react with chemical plating solution, acid solution and alkali solution, and has a temperature resistance of not lower than 100 ℃; preferably, the clamp 15 is made of polytetrafluoroethylene.

Further, the polishing mechanism comprises a base 16, the base 16 is arranged at the bottom of the U-shaped frame 1, a slide rail 17 is arranged at the upper end of the base, and two groups of first sliding blocks 18 are arranged in the slide rail 17, so that the distance between the two groups of first sliding blocks 18 can be conveniently adjusted according to the diameter of the oil pipe sample 2; two polishing rods 19 are arranged on each group of first sliding blocks 18, and the polishing rods 19 are used for removing oxide skin attached to the inner wall and the outer wall of the oil pipe sample 2, enabling the surfaces of the polishing rods to reach proper roughness, and facilitating chemical plating; the bottoms of two polishing rods 19 on each group of first sliding blocks 18 are connected through an elastic piece 20 and are used for fastening the oil pipe sample 2; in the polishing process, the inner wall and the outer wall of the oil pipe are contacted with the polishing rod 19, and the inner wall and the outer wall of the oil pipe are polished simultaneously by rotating the oil pipe sample 2.

Specifically, the length of the polishing rod 19 is slightly longer than that of the oil pipe sample 2, so that the polishing effect is ensured.

Further, the alkaline washing tank 3, the water washing tank 4, the acid washing tank 5 and the chemical plating tank 6 are all arranged at the bottom of the U-shaped frame 1, the top of the alkaline washing tank is provided with an opening, so that the liquid injection and the oil pipe sample 2 can enter conveniently, and the bottom of the alkaline washing tank is provided with a liquid discharge pipe 21, so that the treated waste liquid can be discharged conveniently; the drain pipe 21 is provided with a drain valve 22 for controlling whether or not the waste liquid is discharged.

Specifically, the acid washing tank 5 is filled with acid liquor and is used for removing residual oxide skin on the surface of the oil pipe sample 2; alkali liquor is contained in the alkali washing tank 3 and is used for removing greasy dirt on the surface of the oil pipe sample 2; the chemical aqueduct is internally provided with chemical plating liquid for preparing chemical plating layers on the surface of the oil pipe sample piece 2; deionized water is contained in the washing tank 4 and is used for cleaning residues on the surface of the oil pipe sample piece 2 after polishing, acid washing, alkali washing and chemical plating treatment; preferably, the four groove bodies are made of polytetrafluoroethylene.

Further, heating pieces are arranged at the periphery and the bottom of the alkaline washing tank 3 and used for heating alkaline liquid, and meanwhile, uniform heating of the alkaline liquid is ensured, and oil removal effect is improved; a thermocouple 23 is inserted in the liquid tank, and is used for monitoring the temperature of the liquid in the alkaline washing tank 3 in real time and feeding back the liquid to a touch type digital display panel 33;

heating elements are arranged at the periphery and the bottom of the chemical plating tank 6 and used for heating the chemical plating solution, and meanwhile, the chemical plating solution is ensured to be uniformly heated, so that the quality of a plating layer is improved; a thermocouple 23 is inserted in the chemical plating tank 6 for monitoring the temperature of the liquid in real time and feeding back the liquid to the touch digital display panel 33.

Specifically, a thermocouple sleeve 24 is arranged in the alkaline washing tank 3 and the chemical plating tank 6, and a thermocouple 23 is inserted into the thermocouple sleeve 24, so that the thermocouple 23 is protected from chemical corrosion and mechanical damage; the thermocouple sleeve 24 in the present application has the characteristics of good corrosion resistance, good thermal conductivity, and no reaction with the liquid in the tank, and the material thereof is not particularly limited herein.

Further, the transmission mechanism comprises a screw rod 25 and a third motor 26, the third motor 26 is in driving connection with the screw rod 25, the screw rod 25 is controlled to rotate through the third motor 26, and the second sliding block 27 is driven to move along the horizontal direction; two ends of the screw rod 25 are respectively connected with two ends of the U-shaped frame 1, so that the stability of the transmission mechanism is improved; the upper end of the upper platform 7 is provided with a second sliding block 27, and the second sliding block 27 is arranged on the screw rod 25 in a sliding manner and is used for driving the lifting mechanism, the clamping mechanism and the oil pipe sample 2 to reciprocate along the horizontal direction at the same time.

Specifically, the outside of the U-shaped frame 1 is provided with a fixing table 28 for placing the third motor 26, which is firm and reliable.

Further, the drying mechanism comprises a cylinder 29 and an air compressor 30, wherein the cylinder 29 is arranged at the bottom of the U-shaped frame 1, and the air compressor 30 is arranged at one side of the U-shaped frame 1, so that the interference to the processing process of the oil pipe sample 2 is avoided; the side wall and the bottom wall of the cylinder 29 are respectively provided with an air outlet hole 31, and the air compressor 30 is connected with the air outlet holes 31 through a pipeline, so that compressed air is conveniently sprayed into the cylinder 29, and the air compressor is used for purging residual moisture on the inner wall and the outer wall of the oil pipe sample 2.

Further, the control mechanism comprises a box 32, a touch type digital display panel 33 and a built-in program, wherein the touch type digital display panel 33 is arranged on the side surface of the box 32, so that instructions can be conveniently input and output, and running parameters can be conveniently displayed; the built-in program is provided in the case 32, and the built-in program is controlled by the touch-type digital display panel 33, and the heating element, the first motor 9, the second motor 13, the third motor 26, and the air compressor 30 are controlled by the built-in program so as to be automatically operated according to a set mode and a flow.

Referring to fig. 5, one embodiment of the present invention also provides a method of electroless plating of an oil pipe surface, comprising the steps of:

(1) The system is started, an oil pipe sample 2 is fixed on a clamp 15, the liquid temperatures in an alkaline washing tank 3 and an electroless plating tank 6 are set on a touch type digital display panel 33, a heating element is controlled to heat the liquid in the alkaline washing tank 3 and the electroless plating tank 6 to the set temperatures according to instructions received by a built-in program, heat preservation is carried out, and meanwhile the liquid temperatures in the alkaline washing tank 3 and the electroless plating tank 6 are monitored in real time through a thermocouple 23 and fed back to the touch type digital display panel 33;

(2) Firstly, a third motor 26 is started, a control screw rod 25 drives a second sliding block 27 to move to the position above polishing rods 19, then a first motor 9 is started, a traction chain 11 is controlled to extend to drive a lower platform 8 to descend, an oil pipe sample 2 is arranged between two polishing rods 19 connected by an elastic piece 20, then a second motor 13 is started, a rotating shaft 14 drives the oil pipe sample 2 to rotate, and the polishing rods 19 polish the inner wall and the outer wall of the oil pipe sample 2;

specifically, the first sliding blocks 18 move in the sliding rail 17 until the distance between the two groups of first sliding blocks 18 is matched with the diameter of the oil pipe sample 2, and the two polishing rods 19 connected by the elastic piece 20 are pulled out to fix the oil pipe sample 2; to enhance the sanding effect, the elastic member 20 is preferably a spring;

(3) Firstly, starting a first motor 9, controlling a traction chain 11 to shorten and drive a lower platform 8 to ascend, then starting a third motor 26, controlling a screw rod 25 to drive a second sliding block 27 to move to the upper side of a washing tank 4, then starting the first motor 9 again, controlling the traction chain 11 to extend and drive the lower platform 8 to descend, immersing an oil pipe sample 2 in liquid of the washing tank 4, then starting a second motor 13, and driving the oil pipe sample 2 to rotate by a rotating shaft 14 to clean the oil pipe sample 2;

(4) Firstly, a first motor 9 is started, a traction chain 11 is controlled to shorten and drive a lower platform 8 to ascend, then a third motor 26 is started, a control screw rod 25 drives a second sliding block 27 to move to the upper side of a cylinder 29, then the first motor 9 is started again, the traction chain 11 is controlled to extend and drive the lower platform 8 to descend, an oil pipe sample 2 is placed in the cylinder 29, then an air compressor 30 is controlled to start through a built-in program, gas is injected into the cylinder 29 through a gas outlet hole 31, finally, a second motor 13 is started, a rotating shaft 14 drives the oil pipe sample 2 to rotate, and the oil pipe sample 2 is dried;

(5) Firstly, starting a first motor 9, controlling a traction chain 11 to shorten and drive a lower platform 8 to ascend, then starting a third motor 26, controlling a screw rod 25 to drive a second sliding block 27 to move to the upper side of an alkaline washing tank 3, then starting the first motor 9 again, controlling the traction chain 11 to extend and drive the lower platform 8 to descend, immersing an oil pipe sample 2 in liquid of the alkaline washing tank 3, then starting a second motor 13, driving a rotating shaft 14 to drive the oil pipe sample 2 to rotate, removing oil from the oil pipe sample 2, and finally sequentially repeating the steps (3) and (4);

(6) Firstly, starting a first motor 9, controlling a traction chain 11 to shorten and drive a lower platform 8 to ascend, then starting a third motor 26, controlling a screw rod 25 to drive a second sliding block 27 to move to the upper side of a pickling tank 5, then starting the first motor 9 again, controlling the traction chain 11 to extend and drive the lower platform 8 to descend, immersing an oil pipe sample 2 in liquid of the pickling tank 5, then starting a second motor 13, driving a rotating shaft 14 to drive the oil pipe sample 2 to rotate, pickling the oil pipe sample 2, and finally sequentially repeating the steps (3) and (4);

(7) Firstly, a first motor 9 is started, a traction chain 11 is controlled to shorten and drive a lower platform 8 to ascend, then a third motor 26 is started, a control screw rod 25 drives a second sliding block 27 to move to the upper side of an electroless plating tank 6, then the first motor 9 is started again, the traction chain 11 is controlled to extend and drive the lower platform 8 to descend, an oil pipe sample 2 is immersed in liquid of the electroless plating tank 6, then a second motor 13 is started, a rotating shaft 14 drives the oil pipe sample 2 to rotate, electroless plating is carried out on the oil pipe sample 2, finally steps (3) and (4) are repeated in sequence, the system is stopped, and the oil pipe sample 2 after the electroless plating is obtained.

Specifically, the user inputs a selection command on the touch-type digital display panel 33, and the built-in program receives the selection command, and then controls the motor corresponding to the selection command, for example, the first motor 9, the second motor 13, or the third motor 26, to be started according to the selection command of the user.

Specifically, the extension/shortening amount of the drag chain 11 and the displacement amount of the second slider 27 are determined according to the device size of the oil pipe surface electroless plating, and the start and stop of the first motor 9 and the third motor 26 can be controlled by the built-in program, thereby controlling the extension/shortening of the drag chain 11 by a set amount and the movement of the second slider 27 by a set amount.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims (10)

1. The device for chemically plating the surface of the oil pipe is characterized by comprising a U-shaped frame, a treatment tank, a polishing mechanism, a drying mechanism and a control mechanism;

the top of the U-shaped frame is provided with a transmission mechanism and a lifting mechanism, the transmission mechanism is in sliding connection with the lifting mechanism, and a clamping mechanism is arranged on one side of the lifting mechanism away from the transmission mechanism;

the polishing mechanism, the treatment tank and the drying mechanism are sequentially arranged at the bottom of the U-shaped frame, and the treatment tank consists of an alkaline washing tank, a water washing tank, an acid washing tank and an electroless plating tank;

the control mechanism is arranged on one side of the U-shaped frame and is electrically connected with the transmission mechanism, the lifting mechanism, the clamping mechanism, the alkaline washing tank, the chemical plating tank and the drying mechanism.

2. The device for electroless plating of the surface of the oil pipe according to claim 1, wherein the lifting mechanism comprises an upper platform and a lower platform, a first motor and a winch are arranged at the upper end of the upper platform, the first motor is in driving connection with the winch, a traction chain is wound on the winch, and the free end of the traction chain penetrates through the upper platform and is connected with the lower platform;

and a telescopic frame is further arranged between the upper platform and the lower platform.

3. The apparatus for electroless plating of an oil pipe surface according to claim 2, wherein the clamping mechanism comprises a second motor, a rotating shaft and a clamp, the second motor is in driving connection with the rotating shaft, the second motor is disposed at an upper end of the lower platform, the rotating shaft is disposed at a lower end of the lower platform, and the clamp is disposed at a lower end of the rotating shaft.

4. The device for electroless plating on the surface of an oil pipe according to claim 3, wherein the polishing mechanism comprises a base, the base is arranged at the bottom of the U-shaped frame, a sliding rail is arranged at the upper end of the base, two groups of first sliding blocks are arranged in the sliding rail, two polishing rods are arranged on each group of first sliding blocks, and the bottoms of the two polishing rods are connected through an elastic piece.

5. The device for electroless plating of an oil pipe surface according to claim 4, wherein the alkaline washing tank, the water washing tank, the acid washing tank and the electroless plating tank are all arranged at the bottom of the U-shaped frame, and drain pipes are all arranged at the bottoms of the alkaline washing tank, the water washing tank, the acid washing tank and the electroless plating tank, and drain valves are arranged on the drain pipes.

6. The device for electroless plating on the surface of an oil pipe according to claim 5, wherein heating elements are arranged at the periphery and the bottom of the alkaline washing tank, and thermocouples are inserted in the heating elements;

heating elements are arranged at the periphery and the bottom of the chemical plating tank, and thermocouples are inserted in the heating elements.

7. The device for electroless plating of an oil pipe surface according to claim 6, wherein the transmission mechanism comprises a screw rod and a third motor, the third motor is in driving connection with the screw rod, two ends of the screw rod are respectively connected with two ends of the U-shaped frame, a second sliding block is arranged at the upper end of the upper platform, and the second sliding block is arranged on the screw rod in a sliding manner.

8. The device for electroless plating of an oil pipe surface according to claim 7, wherein the drying mechanism comprises a cylinder and an air compressor, the cylinder is arranged at the bottom of the U-shaped frame, the air compressor is arranged at one side of the U-shaped frame, air outlets are arranged on the side wall and the bottom wall of the cylinder, and the air compressor is connected with the air outlets through a pipeline.

9. The device for electroless plating of an oil pipe surface according to claim 8, wherein the control mechanism comprises a case, a touch-type digital display panel and a built-in program, the touch-type digital display panel is disposed on a side surface of the case, the built-in program is disposed in the case, the built-in program is controlled by the touch-type digital display panel, and the heating element, the first motor, the second motor, the third motor and the air compressor are controlled by the built-in program.

10. The method for chemically plating the surface of the oil pipe is characterized by comprising the following steps of:

(1) Fixing an oil pipe sample on a clamp, setting the liquid temperatures in an alkaline washing tank and an electroless plating tank on a touch type digital display panel, and controlling a heating element to heat the liquid in the alkaline washing tank and the electroless plating tank to the set temperature according to instructions received by a built-in program;

(2) Firstly, starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper part of the polishing rods, then starting a first motor, controlling a traction chain to extend to drive a lower platform to descend, arranging an oil pipe sample between two polishing rods connected by an elastic piece, and then starting the second motor, wherein a rotating shaft drives the oil pipe sample to rotate, so that the polishing rods polish the inner wall and the outer wall of the oil pipe sample;

(3) Firstly, starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper part of a washing tank, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, immersing an oil pipe sample in liquid of the washing tank, and then starting a second motor, wherein a rotating shaft drives the oil pipe sample to rotate to clean the oil pipe sample;

(4) Firstly, starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper part of a cylinder, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, placing an oil pipe sample in the cylinder, then starting an air compressor, spraying gas into the cylinder through a gas outlet hole, finally starting the second motor, and driving the oil pipe sample to rotate by a rotating shaft to dry the oil pipe sample;

(5) Firstly starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper part of an alkaline washing tank, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, immersing an oil pipe sample in liquid of the alkaline washing tank, then starting a second motor, driving the oil pipe sample to rotate by a rotating shaft, removing oil from the oil pipe sample, and finally sequentially repeating the steps (3) and (4);

(6) Firstly starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the position above a pickling tank, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, immersing an oil pipe sample in liquid of the pickling tank, then starting the second motor, driving the oil pipe sample to rotate by a rotating shaft, pickling the oil pipe sample, and finally sequentially repeating the steps (3) and (4);

(7) Firstly, starting a first motor, controlling a traction chain to shorten and drive a lower platform to ascend, then starting a third motor, controlling a screw rod to drive a second sliding block to move to the upper side of an electroless plating tank, then starting the first motor again, controlling the traction chain to extend and drive the lower platform to descend, immersing an oil pipe sample in liquid of the electroless plating tank, then starting a second motor, driving an oil pipe sample to rotate by a rotating shaft, carrying out electroless plating on the oil pipe sample, and finally sequentially repeating the steps (3) and (4) to obtain the oil pipe sample after electroless plating.

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