Sampling device for collecting small pipeline sample

Abstract

The utility model relates to the technical field of damage detection, and discloses a sampling device for collecting pipeline tiny samples, which comprises a fixing device and a collecting device, the fixing device comprises a fixing base plate and at least two clamping sliding blocks, the clamping sliding blocks are connected below the fixing base plate in a sliding mode, and the collecting device is connected with the fixing base plate in a sliding mode. The collecting device comprises a sliding base plate, a cantilever and a sampling assembly, the sliding base plate is connected to the upper portion of the fixed base plate in a sliding mode, one end of the cantilever is connected to the sliding base plate, the other end of the cantilever extends out of the fixed base plate, and the sampling assembly is arranged at the end, extending out of the fixed base plate, of the cantilever. The device is small in overall size and high in flexibility, the belt is used as an auxiliary clamping part, damage to equipment in the sampling process is reduced, meanwhile, more excellent curved surface fixing performance is shown, surface in-situ sampling of equipment parts is facilitated, sampling in a narrow space can be achieved, and the sampling efficiency is improved. And the flexible fixing mechanism can realize sampling and processing of surfaces with complex shapes.

Description

TECHNICAL FIELD

[0001] The utility model relates to damage detection technical field, concretely relates to a sampling device for collecting pipeline micro sample. BACKGROUND

[0002] The electric micro loss sampling machine is mainly divided into mechanical sampling machine and electric spark sampling machine according to its sampling principle. Most mechanical sampling machines are based on "spherical shell sampling machine", and its sampling principle is as follows: the cutter is controlled by the telescopic rod to be fixed in the sampling area, under the control of the sampling system, the cutter makes feeding motion while rotating at high speed, and sampling is completed when the bowl-shaped cutter rotates through a certain angle. The electric spark sampling machine generates high temperature by electrode discharge to melt the surface layer metal, and the motor drives the electrode to make feeding motion to complete sampling.

[0003] Electric spark forming machining is generally carried out in liquid medium, and the workpiece and tool motor are kept at a proper discharge gap by the automatic feeding adjustment device of the machine tool. When a very strong pulse voltage is applied between the tool electrode and the workpiece and reaches the breakdown voltage of the medium in the gap, the medium insulation strength at the lowest point is broken down. Since the discharge area is very small and the discharge time is very short, it has very high energy density, so that the surface temperature of the workpiece and the tool electrode surface rises rapidly, the metal is locally melted or even vaporized, and the locally melted or even vaporized metal is cooled and carried away by the medium, so that a small pit is formed on the surface of the workpiece. Through the process of repeatedly etching the surface of the workpiece, the shape of the tool electrode is reproduced on the workpiece, so that the forming machining is realized.

[0004] The machining and manufacturing of mechanical sampling machine is the main difficulty in its actual application. The bowl-shaped cutter, the key component, pursues small and thin size while maintaining high strength and rigidity, which puts high requirements on the precision of cutter machining and cutter material. Traditional electric spark machining equipment is mostly manufacturing machine, which cannot meet the requirements of in-situ sampling. In addition, the previous sampling and collecting device has the disadvantages of large size and poor flexibility, and is mostly fixed type. CONTENT OF THE UTILITY MODEL

[0005] The utility model solves the problems of the existing mechanical sampling machine machining and manufacturing difficulty, and the electric spark machining equipment with large size and poor flexibility.

[0006] In order to solve the above technical problems, the technical scheme of the utility model is provided with a sampling device for collecting pipeline micro samples, which comprises a fixing device and a collecting device, the fixing device comprises a fixing base plate and clamping sliding blocks, the clamping sliding blocks are at least two, the clamping sliding blocks are slidably connected below the fixing base plate, the collecting device comprises a sliding base plate, a cantilever and a sampling assembly, the sliding base plate is slidably connected above the fixing base plate, one end of the cantilever is connected to the sliding base plate, and the other end of the cantilever extends out of the fixing base plate, and the sampling assembly is arranged on the end of the cantilever extending out of the fixing base plate.

[0007] Optionally, the clamping sliding block is provided with a fixed support, and the fixed support is provided with a belt.

[0008] Optionally, the sampling assembly comprises a rotating motor, an electrode clamp and an electrode, one end of the electrode clamp is connected to the output shaft of the rotating motor, and the other end of the electrode clamp clamps the electrode.

[0009] Optionally, the cantilever is a "7" type, the horizontal section of the cantilever is fixedly connected to the sliding base plate, a plurality of threaded holes at different heights are arranged on the vertical section of the cantilever, and the rotating motor is connected to the threaded hole through bolts.

[0010] Optionally, the sliding base plate is provided with a pressing plate, the pressing plate is located above the cantilever and presses the cantilever.

[0011] Optionally, an insulating block is arranged between the cantilever and the rotating motor.

[0012] Optionally, the fixing base plate is provided with a sliding groove penetrating from top to bottom on both sides, the clamping sliding block is provided with a bolt at the upper end, the bolt penetrates through the sliding groove, and the clamping sliding block is slidably connected to the fixing base plate through the bolt.

[0013] Optionally, a plurality of sliding blocks are connected below the sliding base plate, a sliding block guide rail corresponding to the sliding blocks is arranged on the upper surface of the fixing base plate, the sliding block guide rail is connected to the fixing base plate through a connecting buckle, and the sliding blocks are arranged on the sliding block guide rails and can slide along the sliding block guide rails.

[0014] Optionally, a screw hole is arranged below the sliding base plate, a lead screw parallel to the sliding block guide rail is arranged on the fixing base plate, the lead screw penetrates through the screw hole, and one end of the lead screw is connected to a stepping motor.

[0015] In summary, the utility model has small overall size, high flexibility, uses a belt as an auxiliary clamping component, compared with traditional mechanical clamping, the belt fixing further reduces the damage of equipment in the sampling process, meanwhile, the belt fixing has better curved surface fixing performance, can even adapt to more complex curved surfaces, facilitates in-situ sampling of the surface of equipment components, can realize sampling in narrow spaces, and the flexible fixing mechanism can realize sampling and processing of complex surface shapes. Attached Figure Description

[0016] Figure 1 This is a top view of the structure of this utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the belt connection structure of this utility model;

[0019] In the diagram: 1. Stepper motor; 2. Slider guide rail; 3. Connecting buckle; 4. Sliding base plate; 5. Slider; 6. Cantilever; 7. Pressure plate; 8. Insulating block; 9. Rotary motor; 10. Electrode clamp; 11. Electrode; 12. Fixed base plate; 13. Fixed bracket; 14. Clamping slider; 15. Belt; 16. Slide groove; 17. Lead screw. Detailed Implementation

[0020] The following combination Figures 1-3 The present invention will be described in further detail below.

[0021] This utility model discloses a sampling device for collecting small samples from pipelines, referring to... Figure 1 and Figure 2 The device includes a fixing device and a collection device. The fixing device includes a fixing base plate 12 and a clamping slider 14. At least two clamping sliders 14 are provided. The clamping sliders 14 are slidably connected to the bottom of the fixing base plate 12. The collection device includes a sliding base plate 4, a cantilever 6 and a sampling component. The sliding base plate 4 is slidably connected to the top of the fixing base plate 12. One end of the cantilever 6 is connected to the sliding base plate 4 and the other end extends out of the fixing base plate 12. The sampling component is provided on the end of the cantilever 6 that extends out of the fixing base plate 12.

[0022] In a further implementation, refer to Figure 3 The clamping slider 14 is threadedly connected to a fixed bracket 13, and the fixed bracket 13 is equipped with a belt 15, which is used for auxiliary fixation.

[0023] In a further implementation, refer to Figure 2 The sampling assembly includes a rotary motor 9, an electrode clamp 10, and an electrode 11. The rotary motor 9 is connected to one end of the cantilever 6 that extends out of the fixed base plate 12. One end of the electrode clamp 10 is connected to the output shaft of the rotary motor 9, and the other end clamps the electrode 11. The cantilever 6 is "7" shaped. Its horizontal section is fixedly connected to the sliding base plate 4, and its vertical section is provided with multiple sets of threaded holes at different heights. The rotary motor 9 is connected to the threaded holes by bolts. The sliding base plate 4 is provided with a pressure plate 7, which is located above the cantilever 6 and presses the cantilever 6. An insulating block 8 is provided between the cantilever 6 and the rotary motor 9.

[0024] In the spark processing process, the electrode 11 is connected with the positive pole of the spark power source, when it is close to the workpiece connected with the negative pole of the spark power source, the discharge between the two removes the metal on the surface of the workpiece, the insulating block 8 separates the electric circuit system of the device into two parts, which can prevent the high voltage on the electrode 11 from reversing and breaking the stepper motor 1 used for driving the lead screw 17 and the power source during the work process, the sampling part is fixed with the sliding base plate 4 through the cantilever 6 and moves with the sliding base plate 4, the cantilever 6 is provided with a plurality of threaded holes with different vertical positions, and the clamping height of the electrode 11 can be changed according to the requirements of actual application.

[0025] In a further embodiment, the fixed base plate 12 is provided with a sliding groove 16 penetrating through the upper and lower sides, and the clamping sliding block 14 is provided with a bolt, the bolt penetrates through the sliding groove 16 and is connected with the fixed base plate 12 through the bolt.

[0026] In a further embodiment, the sliding base plate 4 is connected with a plurality of sliding blocks 5 below, the fixed base plate 12 is provided with a sliding block guide rail 2 corresponding to the sliding blocks 5 on the upper surface, the sliding block guide rail 2 is connected with the fixed base plate 12 through the connecting buckle 3, the sliding blocks 5 are arranged on the sliding block guide rail 2 and can slide along the sliding block guide rail 2, the sliding base plate 4 is provided with a threaded hole below, the fixed base plate 12 is provided with a lead screw 17 parallel to the sliding block guide rail 2, the lead screw 17 penetrates through the threaded hole, and one end of the lead screw 17 is connected with the stepper motor 1.

[0027] In use, first, the device is fixed, for example, the chemical pipeline, the device is horizontally arranged on the top of the pipeline, the positions of the two clamping sliding blocks 14 are adjusted to be closely combined with the pipeline, the fixing screws between the clamping sliding blocks 14 and the fixed base plate 12 are locked, then the length of the elastic belt 15 is adjusted to be closely combined with the surface of the pipeline and has a certain pre-tightening force, the electrode 11 and the pipeline are kept at a certain distance, the circuit and the cooling circuit are connected, the positive pole of the spark power source is connected with the electrode 11, the negative pole of the spark power source is connected with the pipeline, the water pump is connected, the universal faucet is fixed on the pipeline through the magnetic base, the water outlet direction is guaranteed to be opposite to the electrode 11, the water flow is stable and continuous, then the stepper motor 1 and the rotating motor 9 are connected with the control system, the power supply and the computer according to requirements, finally, the spark power source is started, the lead screw 17 is controlled to rotate, the sliding base plate 4 is close to the surface of the pipeline with small steps until stable sparks appear, and then the program automatic control stage is entered, the moving or rotating speed of the stepper motor 1 and the rotating motor 9 is controlled, stable feeding is carried out, and until the sample with the required geometric shape is completely cut off.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A sampling device for collecting a micro-sample of a pipeline, characterized in that, The utility model provides a kind of fixed device and collection device, the fixed device includes fixed base plate (12) and clamping slider (14), the clamping slider (14) is equipped with at least two, the clamping slider (14) is slidably connected below fixed base plate (12), the collection device includes sliding base plate (4), cantilever (6) and sampling assembly, the sliding base plate (4) is slidably connected above fixed base plate (12), the cantilever (6) one end is connected on sliding base plate (4), the other end extends fixed base plate (12), and the sampling assembly is arranged on the one end of cantilever (6) extending fixed base plate (12).

2. The sampling device for collecting a micro-sample of a pipeline according to claim 1, characterized in that, The clamping slider (14) is provided with a fixed support (13), and the fixed support (13) is provided with a belt (15).

3. The sampling device for collecting a micro-sample of a pipeline according to claim 1, characterized in that, The sampling assembly includes a rotating motor (9), an electrode clamp (10) and an electrode (11). The rotating motor (9) is connected to the end of the cantilever (6) extending from the fixed base plate (12). The electrode clamp (10) is connected to the output shaft of the rotating motor (9) at one end and clamps the electrode (11) at the other end.

4. The sampling device for collecting a micro-sample of a pipeline according to claim 3, characterized in that, The cantilever (6) is a "7" type, and the horizontal section is fixedly connected to the sliding base plate (4). A plurality of threaded holes at different heights are arranged on the vertical section, and the rotating motor (9) is connected to the threaded holes by bolts.

5. The sampling device for collecting a micro-sample of a pipeline according to claim 3, wherein, The sliding base plate (4) is provided with a pressing plate (7), which is located above the cantilever (6) and presses the cantilever (6).

6. The sampling device for collecting a micro-sample of a pipeline according to claim 3, characterized in that, An insulating block (8) is arranged between the cantilever (6) and the rotating motor (9).

7. The sampling device for collecting a micro-sample of a pipeline according to claim 1, characterized in that, The fixed base plate (12) is provided with a slide groove (16) penetrating from top to bottom on both sides. The clamping slider (14) is provided with a bolt at the upper end. The bolt passes through the slide groove (16) and connects the clamping slider (14) to the fixed base plate (12) by the bolt.

8. The sampling device for collecting a micro-sample of a pipeline according to claim 1, characterized in that, A plurality of sliding blocks (5) are connected below the sliding base plate (4). The upper surface of the fixed base plate (12) is provided with a sliding block guide rail (2) corresponding to the sliding blocks (5). The sliding block guide rail (2) is connected to the fixed base plate (12) by a connecting buckle (3). The sliding blocks (5) are arranged on the sliding block guide rail (2) and can slide along the sliding block guide rail (2).

9. The sampling device for collecting a micro-sample of a pipeline according to claim 8, characterized in that, A screw hole is arranged below the sliding base plate (4). A lead screw (17) parallel to the sliding block guide rail (2) is arranged on the fixed base plate (12). The lead screw (17) passes through the screw hole, and one end of the lead screw (17) is connected to a stepping motor (1).

Images