Laser repairing method and system for oil-gas separator regulating valve

Abstract

The invention discloses a laser repairing method and system for an oil-gas separator adjusting valve, and the method comprises the steps: cleaning each adjusting valve part, and determining the damaged part of the to-be-repaired adjusting valve part, and the chemical components, the mark and the hardness of the damaged part; the damaged part is machined, and a wear layer or an erosion layer of the damaged part is removed and cleaned up; performing three-dimensional scanning on the damaged part, reconstructing a three-dimensional model of the damaged part, and planning a repair path of the damaged part according to three-dimensional model data; and on the basis of the chemical components, the mark and the hardness of the damaged part, the damaged part of the to-be-repaired adjusting valve component is repaired according to the repairing path of the damaged part, and the repaired adjusting valve component is obtained. Precise repairing of the oil-gas separator adjusting valve is achieved, and the repaired adjusting valve is small in thermal deformation and high in standardization and meets the use requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of regulating valves, and in particular to a laser repair method and system for an oil-gas separator regulating valve. Background Art

[0002] The oil-gas separator regulating valve is an important tool in the natural gas collection device. It is a pressure pipeline component that connects the medium passage or changes the medium flow direction and adjusts the flow, pressure, liquid level and temperature. The valve core, valve seat and sleeve of the regulating valve are easily eroded and worn under the coupling effect of multiple factors. Once the oil-gas separator regulating valve is eroded or worn, it will affect its adjustment accuracy and need to be replaced, which is not conducive to ensuring the long-term stable operation of the equipment.

[0003] The oil and gas separator regulating valves used in domestic oil and gas fields are usually made of 316 and 2205 stainless steel, which are difficult to meet the use requirements in harsh use environments and have a service life of 2 to 6 months. For failed oil and gas separator regulating valves, they are generally scrapped. Therefore, in order to extend the service life of the oil and gas separator regulating valve and reduce the cost of use, the old oil and gas separator regulating valve is repaired to give full play to its value.

[0004] The existing flame cladding, arc cladding and plasma cladding technologies have been used in the repair of large non-precision components, but they have disadvantages such as large heat input, large heat-affected zone, and large substrate deformation, which are not suitable for the repair of small-sized precision parts such as oil-gas separator regulating valves. Laser cladding technology has the advantages of concentrated heat, fast heating, fast cooling, and small heat-affected zone, and is an ideal way to repair small-sized precision parts. Summary of the invention

[0005] The purpose of the present invention is to provide a laser repair method and system for an oil-gas separator regulating valve, which adopts a suitable laser repair process and its parameters to achieve precise repair of the oil-gas separator regulating valve, and the repaired regulating valve has small thermal deformation, strong standardization and meets the use requirements.

[0006] To achieve the above object, the present invention provides a laser repair method for an oil-gas separator regulating valve, the method comprising:

[0007] Clean each regulating valve component, and determine the damaged portion of the regulating valve component to be repaired, as well as the chemical composition, grade and hardness of the damaged portion;

[0008] Machining the damaged part to remove the wear layer or erosion layer of the damaged part and clean it;

[0009] Performing a three-dimensional scan on the damaged part, reconstructing a three-dimensional model of the damaged part, and planning a repair path for the damaged part according to the three-dimensional model data;

[0010] Based on the chemical composition, grade and hardness of the damaged part and according to the repair path of the damaged part, the damaged part of the regulating valve component to be repaired is repaired to obtain the repaired regulating valve component.

[0011] Furthermore, the cleaning of each regulating valve component and determining the damaged portion of the regulating valve component to be repaired, as well as the chemical composition, grade and hardness of the damaged portion include:

[0012] Clean each control valve component a predetermined number of times using acetone;

[0013] After cleaning, check whether each control valve component is repairable: scrap the control valve components that are not repairable among the control valve components; identify the control valve components that are repairable among the control valve components as the control valve components to be repaired;

[0014] The dimensions of the regulating valve component to be repaired are measured to determine the damaged portion of the regulating valve component to be repaired, and then the chemical composition, grade and hardness of the damaged portion are determined.

[0015] Furthermore, before measuring the dimensions of the regulating valve component to be repaired, the following steps are included:

[0016] Perform nondestructive testing on the control valve component to be repaired to determine whether there are defects inside the control valve component to be repaired:

[0017] If not, directly measure the dimensions of the regulating valve component to be repaired;

[0018] If so, determine whether the regulating valve component to be repaired with internal defects needs to be repaired; if it is not necessary to repair, scrap the regulating valve component to be repaired; if it is necessary to repair, mark and remove the defective position inside the regulating valve component to be repaired, and then measure the size of the regulating valve component to be repaired.

[0019] Further, the chemical composition, grade and hardness of the damaged part are determined, including:

[0020] Using a portable metal component analyzer to perform chemical composition testing on the damaged part to obtain the chemical composition and grade of the damaged part;

[0021] The damaged part is tested for hardness using a portable Leeb hardness tester to obtain the hardness of the damaged part.

[0022] Further, based on the chemical composition, grade and hardness of the damaged part and according to the repair path of the damaged part, the damaged part of the regulating valve component to be repaired is repaired to obtain the repaired regulating valve component, including:

[0023] Based on the chemical composition, grade and hardness of the damaged part, select the alloy powder used in the laser repair of the regulating valve component to be repaired;

[0024] Based on the alloy powder and according to the repair path of the damaged part, the damaged part of the regulating valve component to be repaired is repaired by using a laser coaxial powder feeding method;

[0025] Before selecting the alloy powder used for laser repair of the regulating valve component to be repaired, the machined regulating valve component to be repaired is cleaned with anhydrous ethanol, and the cleaned regulating valve component to be repaired is fixed on a fixture of a workbench;

[0026] Laser repair parameters include: laser power of 2.5-4.5kW, spot diameter of 2-4mm, overlap rate of 35-50%, scanning speed of 6-12mm / s, powder feeding speed of 10-20g / min, and laser cladding thickness of 1.0mm-1.5mm.

[0027] Furthermore, the method further comprises:

[0028] Performing preliminary machining on the repaired regulating valve components according to the original drawings to obtain the preliminary machined regulating valve components;

[0029] The surface of the initially processed regulating valve component is subjected to color flaw detection and ultrasonic flaw detection to determine whether the initially processed regulating valve component is qualified:

[0030] Scrap unqualified control valve parts;

[0031] The qualified control valve components are fine-processed according to the original drawings so that the fine-processed control valve components meet the technical requirements in the original drawings.

[0032] Based on the same inventive concept, the present invention provides a laser repair system for an oil-gas separator regulating valve, the system uses the aforementioned laser repair method for an oil-gas separator regulating valve, the repair system comprises: a computer control module, a robot, a coaxial powder feeding nozzle, a laser, and a workbench.

[0033] The computer control module is used to receive the three-dimensional model data of the damaged part of the regulating valve component to be repaired, plan the repair path of the damaged part according to the three-dimensional model data, and send instruction information to the robot;

[0034] The robot is used to execute the instruction information issued by the computer control module, that is, according to the repair path of the damaged part planned by the computer control module, control the travel path of the coaxial powder feeding nozzle to perform laser repair on the regulating valve component to be repaired on the workbench;

[0035] The workbench is used to place the regulating valve component to be repaired during laser repair;

[0036] The coaxial powder feeding nozzle is used to feed alloy powder so that the alloy powder and the laser intersect at a point on the regulating valve component to be repaired;

[0037] The laser is used to melt the alloy powder on the surface of the damaged part of the regulating valve component (4) to be repaired.

[0038] Furthermore, the system also includes: a powder feeder and a gas storage tank,

[0039] The powder feeder is used to store the alloy powder and quantitatively transport the alloy powder to the coaxial powder feeding nozzle during the laser repair process;

[0040] The gas storage tank is used to store the protective gas argon and quantitatively deliver the argon during the laser repair process.

[0041] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, comprising: a memory, a processor; the processor is used to read and execute a computer program stored in the memory to implement the aforementioned laser repair method for an oil-gas separator regulating valve.

[0042] Based on the same inventive concept, an embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and when the computer executable instructions are executed, the aforementioned laser repair method for an oil-gas separator regulating valve is implemented.

[0043] The technical effects and advantages of the present invention are as follows: the present invention conducts chemical composition and hardness tests on different parts of the regulating valve, and then selects suitable alloy powder and adopts suitable laser repair process parameters, so as to improve the wear resistance and corrosion resistance of the contact parts such as the valve core and valve seat of the regulating valve, ensure its quality reliability, extend its service life, and give full play to its value; and the repair process of the present invention has simple operating steps, strong adaptability, and small thermal deformation, and the modified regulating valve meets the use requirements; it is of great value in extending the service life of the oil-gas separator regulating valve, reducing the use cost, and increasing the localization rate.

[0044] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 A flowchart of the steps of a laser repair method for an oil-gas separator regulating valve according to an embodiment of the present invention;

[0047] Figure 2 A detailed flow chart of the steps of a laser repair method for an oil-gas separator regulating valve according to an embodiment of the present invention;

[0048] Figure 3 This is a structural schematic diagram of a laser repair system for an oil-gas separator regulating valve according to an embodiment of the present invention;

[0049] Figure 4 This is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention;

[0050] In the figure, 1. Computer control module; 2. Robot; 3. Coaxial powder feeding nozzle; 4. Regulating valve component to be repaired; 5. Workbench; 6. Laser; 7. Powder feeder; 8. Gas storage tank. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In order to solve the deficiencies of the prior art, the present invention discloses a laser repair method for an oil-gas separator regulating valve, such as Figure 1 and Figure 2 As shown, including:

[0053] Step S1: Clean each regulating valve component and determine the damaged part of the regulating valve component 4 to be repaired, as well as the chemical composition, grade and hardness of the damaged part; specifically including:

[0054] Step S1.1: Use acetone to clean each control valve component (valve core, base and sleeve) 1-3 times; after cleaning, check whether each control valve component is repairable:

[0055] The regulating valve components that are not repairable among the various regulating valve components are scrapped; and the regulating valve components that are repairable among the various regulating valve components are identified as the regulating valve components 4 to be repaired.

[0056] The inspection of whether each regulating valve component is repairable is carried out by visual inspection, and the repairability inspection includes: inspecting whether each regulating valve component has cracks and fractures that seriously affect repair.

[0057] Step S1.2: Use color detection or ultrasonic detection to implement nondestructive testing of the regulating valve component 4 to be repaired, and determine whether there are defects inside the regulating valve component 4 to be repaired:

[0058] If there is no defect, directly proceed to step 1.3 to measure the size of the regulating valve component 4 to be repaired;

[0059] If there is a defect, it is determined whether the regulating valve component 4 to be repaired with internal defects needs to be repaired:

[0060] When there is no need for repair, the regulating valve component 4 to be repaired is scrapped;

[0061] When repair is necessary, the defective position inside the regulating valve component 4 to be repaired is marked and removed, and then the process proceeds to step 1.3 to measure the size of the regulating valve component 4 to be repaired.

[0062] Step S1.3: Dimensionally measure the regulating valve component 4 to be repaired, and after determining the damaged portion of the regulating valve component 4 to be repaired, use a portable metal composition analyzer to perform a chemical composition test on the damaged portion to obtain the chemical composition and grade of the damaged portion; then use a portable Leeb hardness tester to perform a hardness test on the damaged portion to obtain the hardness of the damaged portion.

[0063] Step S2: machining the damaged part of the regulating valve component 4 to be repaired, removing the wear layer or erosion layer of the damaged part and cleaning it.

[0064] Step S3: Use a three-dimensional scanning reconstruction instrument to perform a three-dimensional scan on the damaged part of the regulating valve component 4 to be repaired, reconstruct the three-dimensional model of the damaged part, and transmit the three-dimensional model data of the damaged part to the computer control module 1, so that the computer control module 1 plans a repair path for the damaged part.

[0065] Step S4: based on the chemical composition, grade and hardness of the damaged part and according to the repair path of the damaged part, the damaged part of the regulating valve component 4 to be repaired is repaired to obtain the repaired regulating valve component; specifically comprising:

[0066] Before selecting the alloy powder used for laser repair of the regulating valve component 4 to be repaired, use anhydrous ethanol to clean the machined regulating valve component 4 to be repaired, and fix the cleaned regulating valve component 4 to be repaired on the fixture of the workbench 5;

[0067] Based on the chemical composition, grade and hardness of the damaged part, select the alloy powder used in the laser repair of the regulating valve component 4 to be repaired;

[0068] Based on the alloy powder and according to the repair path of the damaged part, the damaged part of the regulating valve component 4 to be repaired is repaired by laser coaxial powder feeding; wherein the laser repair parameters include: laser power of 2.5-4.5kW, spot diameter of 2-4mm, overlap rate of 35-50%, scanning speed of 6-12mm / s, powder feeding speed of 10-20g / min, and laser cladding thickness of 1.0mm-1.5mm.

[0069] Performing preliminary machining on the repaired regulating valve components according to the original drawings to obtain the preliminary machined regulating valve components;

[0070] The surface of the initially processed regulating valve component is subjected to color flaw detection and ultrasonic flaw detection to determine whether the initially processed regulating valve component is qualified:

[0071] Scrap unqualified control valve parts;

[0072] The qualified control valve components are fine-processed according to the original drawings so that the fine-processed control valve components meet the technical requirements in the original drawings.

[0073] Based on the same inventive concept, the present invention also provides a laser repair system for an oil-gas separator regulating valve, such as Figure 3 As shown, the repair system includes: a computer control module 1, a robot 2, a coaxial powder feeding nozzle 3, a laser 6 and a workbench 5.

[0074] The computer control module 1 is used for receiving the three-dimensional model data of the damaged part of the regulating valve component 4 to be repaired, planning the repair path of the damaged part according to the three-dimensional model data, and sending instruction information to the robot 2;

[0075] The robot 2 serves as an execution unit in the laser repair system, and is used to execute the instruction information issued by the computer control module 1, that is, to control the travel path of the coaxial powder feeding nozzle 3 according to the repair path of the damaged part planned by the computer control module 1, so as to realize laser repair of the regulating valve component 4 to be repaired on the workbench 5.

[0076] The workbench 5 is used to place the regulating valve component 4 to be repaired during laser repair, and can facilitate the staff to adjust the angle and position of the regulating valve component 4 to be repaired according to the shape and repair path of the regulating valve component 4 to be repaired.

[0077] The coaxial powder feeding nozzle 3 is used to convey alloy powder so that the alloy powder intersects with the laser at a point on the regulating valve component 4 to be repaired; the coaxial powder feeding nozzle 3 serves as a channel for protective gas, alloy powder and cooling water in the repair system.

[0078] The laser 6 is used to melt the alloy powder on the surface of the damaged part of the regulating valve component 4 to be repaired.

[0079] In some specific embodiments, the repair system comprises: a powder feeder 7 and a gas storage tank 8,

[0080] The powder feeder 7 is used to store the alloy powder and quantitatively transport the alloy powder to the coaxial powder feeding nozzle 3 during the laser repair process; the gas storage tank 8 is used to store the protective gas argon and quantitatively transport the argon during the laser repair process, so that the alloy powder and the protective gas can be quantitatively and stably transported. Regarding the system in the above embodiment, the specific way in which each unit module performs the operation has been described in detail in the embodiment of the method, and will not be elaborated here.

[0081] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, whose structure is as follows: Figure 4 As shown, it includes: a memory and a processor, wherein the processor is used to read and execute a computer program stored in the memory to implement the aforementioned laser repair method for an oil-gas separator regulating valve.

[0082] Based on the same inventive concept, an embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and when the computer executable instructions are executed, the aforementioned laser repair method for an oil-gas separator regulating valve is implemented.

[0083] Embodiment 1:

[0084] Taking the damaged valve core of the regulating valve used in the horizontal separator in the natural gas processing station as an example, the specific repair steps include:

[0085] The valve core of the regulating valve was cleaned once with acetone and checked for repairability. Visual inspection revealed that the valve core had no fractures, indicating that the valve core was repairable.

[0086] Ultrasonic testing is used to perform non-destructive testing on the valve core to determine whether there are any defects inside it. The test found that there were no defects such as cracks inside the valve core, and the valve core can be repaired.

[0087] The size of the valve core is measured to determine the damaged part of the valve core; the chemical composition of the damaged part of the valve core is detected using a portable metal composition analyzer to obtain the chemical composition and grade of the damaged part of the valve core. The damaged part of the valve core is made of 316 stainless steel, and its chemical composition is shown in Table 1:

[0088] Table 1 Chemical composition of damaged parts of the valve core of the horizontal separator control valve

[0089]

[0090] .

[0091] A portable Leeb hardness tester was used to test the hardness of the damaged part of the valve core. The test showed that the surface hardness of the damaged part of the valve core was 380HL.

[0092] The damaged part of the valve core is machined to remove the wear layer of the damaged part and clean it; the valve core is three-dimensionally scanned with a three-dimensional scanning reconstruction instrument to reconstruct a three-dimensional model of the damaged part of the valve core, and the three-dimensional model data is transmitted to the computer control module 1, so that the computer control module 1 plans a repair path for the damaged part of the valve core.

[0093] The machined valve core is cleaned with anhydrous ethanol, and then fixed on the fixture of the workbench 5. Inconel718 alloy powder is selected for laser repair according to the hardness, chemical composition and grade of the damaged part of the valve core, and the powder particle size is 50-100 μm.

[0094] According to the repair path of the damaged part of the valve core and the Inconel 718 alloy powder, the valve core is repaired by laser coaxial powder feeding; the laser repair process parameters are as follows: laser power is 3.0kW, spot diameter is 3.0mm, overlap rate is 45%, scanning speed is 10mm / s, powder feeding speed is 16g / min, laser cladding thickness is 1.5mm, and workbench 5 speed is 10r / min.

[0095] The laser-repaired valve core is then preliminarily machined according to the original drawing, and the surface of the valve core after preliminarily machining is subjected to color flaw detection and ultrasonic flaw detection to determine whether the valve core is qualified. Using color flaw detection and ultrasonic testing, it was found that the laser-repaired valve core is qualified.

[0096] Finally, the qualified valve core is fine-processed according to the original drawing to meet the technical requirements in the drawing.

[0097] Embodiment 2:

[0098] Taking the damaged valve seat of the regulating valve used in the horizontal separator in the natural gas processing station as an example, the specific repair steps include:

[0099] The base of the regulating valve is cleaned once with acetone to check whether the base is repairable; visual inspection shows that except for wear on the contact surface, there is no obvious damage to other parts, that is, the base is repairable.

[0100] Ultrasonic testing is used to perform non-destructive testing on the base to determine whether there are any defects inside it. The test found that there were no cracks or other defects inside the base, and the base could be repaired.

[0101] The size of the base was measured to determine the damaged part of the base. A portable metal composition analyzer was used to detect the chemical composition of the damaged part of the base to obtain the chemical composition and grade of the damaged part of the base. The damaged part of the base was made of 2205 stainless steel, and its chemical composition is shown in Table 2:

[0102] Table 2 Chemical composition of damaged parts of the regulating valve base of the horizontal separator

[0103]

[0104] .

[0105] A portable Leeb hardness tester was used to test the hardness of the damaged part of the base. The test showed that the surface hardness of the damaged part of the base was 442HL.

[0106] The damaged part of the base is machined to remove the wear layer of the damaged part and clean it; the valve core is three-dimensionally scanned with a three-dimensional scanning reconstruction instrument to reconstruct the three-dimensional model of the damaged part of the base, and the three-dimensional model data is transmitted to the computer control module 1, so that the computer control module 1 plans a repair path for the damaged part of the base.

[0107] The machined base is cleaned with anhydrous ethanol and fixed on the fixture of the workbench 5 after cleaning; before repairing the base, the base is heated to 200°C using a high-frequency induction heating device. Ni60 alloy powder is selected for laser repair according to the hardness, chemical composition and grade of the damaged part of the base, and the powder particle size is 45-105μm.

[0108] According to the repair path of the damaged part of the base and the Ni60 alloy powder, the base was repaired by laser coaxial powder feeding. The laser repair process parameters were as follows: laser power of 4.5 kW, spot diameter of 4.0 mm, overlap rate of 50%, scanning speed of 9 mm / s, powder feeding speed of 23 g / min, and laser cladding thickness of 1.0 mm.

[0109] The base after laser repair is then preliminarily machined according to the original drawing, and the surface of the base after preliminarily machined is subjected to color flaw detection and ultrasonic flaw detection to determine whether the base is qualified. Using color flaw detection and ultrasonic testing, it was found that the base after laser repair is qualified.

[0110] Finally, the qualified base is fine-processed according to the original drawing to meet the technical requirements in the drawing.

[0111] The present invention conducts chemical composition and hardness tests on different parts of the regulating valve, and then selects suitable alloy powder and adopts suitable laser repair process parameters, thereby improving the wear resistance and corrosion resistance of the contact parts such as the valve core and valve seat of the regulating valve, ensuring its quality reliability, extending its service life, and giving full play to its value.

[0112] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser repair method for an oil-gas separator regulating valve, characterized in that: The method comprises: Cleaning each regulating valve component and determining the damaged portion of the regulating valve component (4) to be repaired, as well as the chemical composition, grade and hardness of the damaged portion; Machining the damaged part to remove the wear layer or erosion layer of the damaged part and clean it; Performing a three-dimensional scan on the damaged part, reconstructing a three-dimensional model of the damaged part, and planning a repair path for the damaged part according to the three-dimensional model data; Based on the chemical composition, grade and hardness of the damaged part and according to the repair path of the damaged part, the damaged part of the regulating valve component (4) to be repaired is repaired to obtain a repaired regulating valve component.

2. The laser repair method for an oil-gas separator regulating valve according to claim 1, characterized in that: The cleaning of each regulating valve component and determining the damaged portion of the regulating valve component (4) to be repaired, as well as the chemical composition, grade and hardness of the damaged portion, include: Clean each control valve component a predetermined number of times using acetone; After cleaning, check whether each regulating valve component is repairable: scrap the regulating valve components that are not repairable among the regulating valve components; identify the regulating valve components that are repairable among the regulating valve components as the regulating valve components to be repaired (4); The dimensions of the regulating valve component (4) to be repaired are measured to determine the damaged portion of the regulating valve component (4) to be repaired, and then the chemical composition, grade and hardness of the damaged portion are determined.

3. The laser repair method for an oil-gas separator regulating valve according to claim 2 is characterized in that: Before measuring the dimensions of the regulating valve component (4) to be repaired, the method includes: Performing nondestructive testing on the regulating valve component (4) to be repaired to determine whether there are defects inside the regulating valve component (4) to be repaired: If not, directly measuring the dimensions of the regulating valve component (4) to be repaired; If so, it is determined whether the regulating valve component (4) to be repaired with internal defects needs to be repaired; if repair is not necessary, the regulating valve component (4) to be repaired is scrapped; if repair is necessary, the defective position inside the regulating valve component (4) to be repaired is marked and removed, and then the dimensions of the regulating valve component (4) to be repaired are measured.

4. A laser repair method for an oil-gas separator regulating valve according to claim 1 or 3, characterized in that: Determine the chemical composition, grade and hardness of the damaged area, including: Using a portable metal component analyzer to perform chemical composition testing on the damaged part to obtain the chemical composition and grade of the damaged part; The damaged part is tested for hardness using a portable Leeb hardness tester to obtain the hardness of the damaged part.

5. The laser repair method for an oil-gas separator regulating valve according to claim 1, characterized in that: Based on the chemical composition, grade and hardness of the damaged part and according to the repair path of the damaged part, the damaged part of the regulating valve component (4) to be repaired is repaired to obtain the repaired regulating valve component, comprising: Based on the chemical composition, grade and hardness of the damaged part, selecting alloy powder used in laser repair of the regulating valve component (4) to be repaired; Based on the alloy powder and according to the repair path of the damaged part, a laser coaxial powder feeding method is used to repair the damaged part of the regulating valve component (4) to be repaired; Before selecting the alloy powder used in laser repairing the regulating valve component (4) to be repaired, the machined regulating valve component (4) to be repaired is cleaned with anhydrous ethanol, and the cleaned regulating valve component (4) to be repaired is fixed on a fixture of a workbench (5); Laser repair parameters include: laser power of 2.5-4.5kW, spot diameter of 2-4mm, overlap rate of 35-50%, scanning speed of 6-12mm / s, powder feeding speed of 10-20g / min, and laser cladding thickness of 1.0mm-1.5mm.

6. The laser repair method for an oil-gas separator regulating valve according to claim 1, characterized in that: The method further comprises: Performing preliminary machining on the repaired regulating valve components according to the original drawings to obtain the preliminary machined regulating valve components; The surface of the initially processed regulating valve component is subjected to color flaw detection and ultrasonic flaw detection to determine whether the initially processed regulating valve component is qualified: Scrap unqualified control valve parts; The qualified control valve components are fine-processed according to the original drawings so that the fine-processed control valve components meet the technical requirements in the original drawings.

7. A laser repair system for an oil-gas separator regulating valve, characterized in that: The system uses a laser repair method for an oil-gas separator regulating valve according to any one of claims 1 to 6, and the repair system comprises: a computer control module (1), a robot (2), a coaxial powder feeding nozzle (3), a laser (6), and a workbench (5). The computer control module (1) is used to receive three-dimensional model data of a damaged part of a regulating valve component (4) to be repaired, plan a repair path for the damaged part according to the three-dimensional model data, and send instruction information to the robot (2); The robot (2) is used to execute the instruction information issued by the computer control module (1), that is, according to the repair path of the damaged part planned by the computer control module (1), control the travel path of the coaxial powder feeding nozzle (3) to perform laser repair on the regulating valve component (4) to be repaired on the workbench (5); The workbench (5) is used to place the regulating valve component (4) to be repaired during laser repair; The coaxial powder feeding nozzle (3) is used to feed alloy powder so that the alloy powder and the laser intersect at a point on the regulating valve component (4) to be repaired; The laser (6) is used to melt the alloy powder on the surface of the damaged portion of the regulating valve component (4) to be repaired.

8. The laser repair system for an oil-gas separator regulating valve according to claim 7, characterized in that: The system further comprises: a powder feeder (7) and a gas storage tank (8), The powder feeder (7) is used to store the alloy powder and quantitatively transport the alloy powder to the coaxial powder feeding nozzle (3) during the laser repair process; The gas storage tank (8) is used to store the protective gas argon and quantitatively deliver the argon during the laser repair process.

9. An electronic device, characterized in that: include: Memory, processor; The processor is used to read and execute the computer program stored in the memory to implement the laser repair method for an oil-gas separator regulating valve as described in any one of claims 1-6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed, the laser repair method for an oil-gas separator regulating valve according to any one of claims 1 to 6 is implemented.

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