Support for instrument for detecting steel components

Abstract

The utility model discloses a support for an instrument for detecting steel components, belongs to the technical field of spectral analysis and detection equipment, and particularly relates to a support for an instrument for detecting steel components by laser-induced breakdown spectroscopy. According to the technical scheme, a box body is a cuboid shell, the top face of the box body is a horizontal plane, the bottom face of the box body is open, a camera hole, a converging lens hole and a collecting lens hole are sequentially formed in the top face of the box body in the length direction, a high-definition camera is installed on the camera hole, and a converging lens ring is installed in the converging lens hole; a converging lens sheet is installed in a clamping groove of a converging lens ring, a collecting lens ring is installed in a collecting lens hole, a collecting lens sheet is installed in a clamping groove of the collecting lens ring, an optical fiber support is installed in the collecting lens hole below the collecting lens sheet, and a protective gas hole is formed in one side of the converging lens hole. The lower end of the protective gas hole is connected with a protective gas pipeline through a box body, and a protective cover is installed on the top face of the box body. The device is simple in structure and convenient to operate, and the detection stability and the qualitative and quantitative analysis precision are improved.

Description

Technical Field

[0001] The utility model relates to a bracket for an instrument for detecting steel components, in particular to a bracket for a laser induced breakdown spectrum instrument for detecting steel components, and belongs to the technical field of spectrum analysis and detection equipment. Background Art

[0002] In the process of steel smelting, the detection of the main chemical composition of steel is related to judging the quality of steel and calculating the smelting cost, and is the core of steel production organization. At present, the commonly used equipment for component detection in steel plants includes spark direct reading spectroscopy, fluorescence spectroscopy, CS instrument, element analyzer, etc. The corresponding commonly used test samples are samples with surface grinding and smoothing treatment, round cakes after pressing / melting, and debris samples. However, the process requires sample preparation, grinding, etc. The whole experimental process is long, the cost is high, and it requires specialized technicians to operate.

[0003] Laser induced breakdown spectroscopy (LIBS) technology has the advantages of being able to detect solid, liquid and gas, no need for sample preparation, short analysis time, strong real-time performance, minimal damage, rapid detection, and non-contact measurement. It has a wide range of application value in the field of metallurgy. On this basis, in order to obtain higher-precision detection and prediction accuracy, the requirements for the optical path system are extremely strict. The bracket currently used has a gap fit between the lens ring and the lens, and then fixed with a spring clip. This installation method easily causes radial displacement of the lens, resulting in refraction of the optical path, causing the focus of the convergence lens and the collection lens to not overlap, resulting in unstable detection data. Therefore, it is very necessary to improve the existing bracket. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a bracket for an instrument for detecting steel composition. The bracket is used to cooperate with instruments such as lasers to detect the steel composition, and can achieve the fixed position of the sample excitation surface each time, the consistent angle and distance between the incident light path and the collection light path and the excitation point, ensure the consistency of the power density obtained each time the excitation is achieved, avoid errors caused by human adjustments, and improve the calibration accuracy of samples in the same series as well as the accuracy and stability of spectral detection.

[0005] The technical solution to solve the above technical problems is:

[0006] A bracket for an instrument for detecting steel composition consists of a box body and a protective cover. The box body is a rectangular shell with an opening at the bottom and a horizontal surface at the top. The top surface is smaller in area than the bottom surface. The top surface and the bottom surface of the box body are connected by four inclined walls. A camera hole, a converging lens hole and a collecting lens hole are sequentially arranged on the top surface of the box body along the length direction. A high-definition camera is installed on the camera hole. A converging lens ring is installed in the converging lens hole. A converging lens piece is loaded into a card slot of the converging lens ring. A collecting lens ring is installed in the collecting lens hole. A collecting lens piece is loaded into a card slot of the collecting lens ring. An optical fiber support is installed in the collecting lens hole below the collecting lens piece. A protective gas hole is provided on one side of the converging lens hole. The lower end of the protective gas hole is connected to a protective gas pipeline through the box body. A protective cover is installed on the top surface of the box body.

[0007] The above-mentioned bracket for the instrument for detecting steel composition, the edges of both sides of the top surface of the box body are respectively provided with upper positioning bolt holes, the upper positioning bolt holes are connected to the bolt holes of the protective cover through bolts, the four corners of the bottom of the box body are respectively provided with lower positioning bolt holes, the lower positioning bolt holes are connected to the laser through bolts, the top plane of the box body is provided with a box body sealing ring, the box body sealing ring surrounds the protective gas hole, the camera hole, the converging lens hole, and the collecting lens hole, and the box body sealing ring is sealed and connected to the bottom edge of the protective cover.

[0008] The above-mentioned bracket for the instrument for detecting the composition of steel, the converging lens hole is a cylindrical stepped through hole, the converging lens ring is installed in the middle section of the stepped through hole of the converging lens hole, the converging lens ring and the converging lens hole are interference fit, the inner hole of the converging lens ring is a cylindrical through hole, a cylindrical groove is processed in the through hole, the groove width must be consistent with the thickness of the converging lens, and the converging lens sheet and the groove of the cylindrical through hole of the converging lens ring are interference fit.

[0009] The above-mentioned bracket for the instrument for detecting the composition of steel, the collecting lens hole is a cylindrical stepped through hole, the collecting lens ring is installed in the middle section of the stepped through hole of the collecting lens hole, the collecting lens ring and the collecting lens hole are interference fit, the inner hole of the collecting lens ring is a cylindrical through hole, a cylindrical-shaped slot is processed in the through hole, the width of the slot must be consistent with the thickness of the collecting lens, and the collecting lens piece and the slot of the cylindrical through hole of the collecting lens ring are interference fit.

[0010] The above-mentioned bracket for the instrument for detecting steel composition, the optical fiber support is a cylinder, the interior of the optical fiber support is a stepped cylindrical through hole, the cylinder of the optical fiber support is installed below the collection lens ring in the collection lens hole, the cylinder of the optical fiber support and the inner wall of the collection lens hole are interference fit, and the lower end of the optical fiber support is connected to the optical fiber.

[0011] The above-mentioned bracket for the instrument for detecting the composition of steel, the protective cover is a cavity shell, the top of the protective cover is a horizontal plane, the bottom of the protective cover is open, the top area is smaller than the bottom, the bottom edge of the protective cover is provided with a protective cover bolt hole, the protective cover bolt hole corresponds to the upper positioning bolt hole of the box body, the connecting bolts connect the bottom of the protective cover with the upper top surface of the box body, the center position of the top plane of the protective cover is provided with a bracket sealing ring hole, the bracket sealing ring hole is a cylindrical through hole, a bracket sealing ring is installed in the bracket sealing ring hole, and the upper end of the bracket sealing ring is tightly fitted with the metal surface to be measured.

[0012] The beneficial effects of the utility model are:

[0013] The utility model has a ventilation duct installed on the protective gas hole on the top surface of the box body, and the protective gas can ensure a stable atmosphere environment in the optical chamber; a high-definition camera is installed in the camera hole to monitor the sample surface in real time, find a clean position to stimulate dot marking, and shoot the working process to facilitate subsequent sample tracking; a converging lens is installed in the card slot of the converging lens ring, and the converging lens irradiates the laser spot to the surface of the metal workpiece to ablate the measured metal; a collecting lens is installed in the card slot of the collecting lens ring, and the collecting lens collects the ablation state of the laser spot of the converging lens on the surface of the metal workpiece; the optical fiber support is installed below the collecting lens ring, and the image collected by the collecting lens is transmitted to the spectrometer via the optical fiber; the laser beam passes through the converging lens and is negatively defocused by 1mm with the metal surface, and the light spot is gathered on the metal surface, ablating the metal surface to gasify it, and is collected by the collecting lens and transmitted to the spectrometer via the optical fiber.

[0014] The utility model has a simple structure, is easy to assemble and operate, can achieve fixed position of sample excitation surface each time, consistent angle and distance between incident light path and collection light path and excitation point, ensures consistent power density obtained each time excitation, avoids errors caused by human adjustment, and improves calibration accuracy of samples in the same series as well as accuracy and stability of spectral detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 yes Figure 1 AA section view;

[0017] Figure 3 yes Figure 1 BB cross-sectional view;

[0018] Figure 4 It is a schematic diagram of the structure of the protective cover;

[0019] Figure 5 is a structural schematic diagram of an optical fiber support;

[0020] Figure 6 is a schematic diagram of the structure of the converging lens ring;

[0021] Figure 7 It is a schematic diagram of the structure of the collection lens circle.

[0022] The markings in the figure are as follows: box body 1, protective gas hole 2, camera hole 3, converging lens hole 4, collecting lens hole 5, upper positioning bolt hole 6, lower positioning bolt hole 7, box body sealing ring 8, bracket sealing ring hole 9, optical path channel 10, optical fiber support 11, converging lens ring 12, collecting lens ring 13, protective cover bolt hole 14, protective cover 15. DETAILED DESCRIPTION

[0023] The utility model is composed of a box body 1 and a protective cover 15.

[0024] Figure 1 , 2 It is shown that the box body 1 is a rectangular shell, the bottom surface of the box body 1 is open, the top surface of the box body 1 is a horizontal surface, the top surface area is smaller than the bottom surface, and the top surface and the bottom surface of the box body 1 are connected by four inclined walls. The edges on both sides of the top surface of the box body 1 are respectively provided with upper positioning bolt holes 6, and the upper positioning bolt holes 6 are connected to the protective cover bolt holes 14 of the protective cover 14 through bolts. The four corners of the bottom of the box body 1 are respectively provided with lower positioning bolt holes 7, and the lower positioning bolt holes 7 are connected to the laser through bolts.

[0025] Figure 1 , 2 It is shown that the top surface of the box body 1 is arranged with a camera hole 3, a converging lens hole 4, and a collecting lens hole 5 in sequence along the length direction.

[0026] A high-definition camera is installed on the camera hole 3 to monitor the sample surface in real time, find a clean position to stimulate the marking, and shoot the working process to facilitate subsequent sample tracking;

[0027] A converging lens ring is installed in the converging lens hole 4, and a converging lens sheet is installed in the card slot of the converging lens ring. The converging lens sheet is a UV fused quartz lens. The converging lens sheet irradiates the laser spot onto the surface of the metal workpiece to ablate the metal to be measured;

[0028] A collection lens ring is installed in the collection lens hole 5, and a collection lens piece is installed in the card slot of the collection lens ring. The collection lens piece is an ultraviolet fused quartz lens. The collection lens piece collects the ablation state of the laser spot of the converging lens on the surface of the metal workpiece;

[0029] The optical fiber holder 11 is installed in the collection lens hole 5 below the collection lens ring, and the image collected by the collection lens is transmitted to the spectrometer via the optical fiber. When working, the laser beam passes through the convergent lens and is negatively defocused by 1mm from the metal surface. The light spot is concentrated on the metal surface, ablating the metal surface to gasify it, and then collected by the collection lens and transmitted to the spectrometer via the optical fiber.

[0030] Figure 1 , 2 It is shown that there is a box sealing ring 8 on the top plane of the box 1, and the box sealing ring 8 surrounds the protective gas hole 2, the camera hole 3, the converging lens hole 4, and the collecting lens hole 5. The box sealing ring 8 is sealed and connected to the bottom edge of the protective cover 15.

[0031] Figure 1 , 3 It is shown that the protective gas hole 2 is located on one side of the converging lens hole 4 on the top surface of the box body 1, and the lower end of the protective gas hole 2 is connected to the protective gas pipeline through the box body 1. The protective gas pipeline passes through the protective gas hole 2 in the box body 1 and passes the protective gas into the protective cover 15 above the box body 1. The protective gas pipeline can be connected to the protective gas hole 2 with a copper pipe, and then connected to the gas cylinder or gas generating device with a hose to ensure a stable atmosphere environment in the light chamber.

[0032] Figure 4 It is shown that the protective cover 15 is a cavity shell, the top of the protective cover 15 is a horizontal plane, the bottom of the protective cover 15 is open, the top area is smaller than the bottom, and the inside of the protective cover 15 is an optical path channel 10. The optical path channel 10 is a cavity structure, and there is no obstruction to the operation of the protective gas hole 2, the camera, the collection lens, and the convergence lens. There is a protective cover bolt hole 14 on the bottom edge of the protective cover 15, and the protective cover bolt hole 14 corresponds to the upper positioning bolt hole 6 of the box body 1. The connecting bolt connects the bottom of the protective cover 15 to the upper top surface of the box body 1. There is a bracket sealing ring hole 9 at the center position of the top plane of the protective cover 15. The bracket sealing ring hole 9 is a cylindrical through hole. The bracket sealing ring is equipped in the bracket sealing ring hole 9, and the upper end of the bracket sealing ring is tightly fitted with the metal surface to be measured. The bracket sealing ring plays two roles: one is to fully seal the close contact part between the bracket and the metal surface to be measured; the other is to control the metal surface to be measured and the laser spot through the convergence lens to be negatively defocused by 1mm.

[0033] Figure 5 It is shown that the optical fiber support 11 is a cylinder, and the interior of the optical fiber support 11 is a stepped cylindrical through hole with a wall thickness of 3 mm. The cylinder of the optical fiber support 11 is installed below the collection lens ring 13 in the collection lens hole 5. The cylinder of the optical fiber support 11 and the inner wall of the collection lens hole 5 are interference fit, and the lower end of the optical fiber support 11 is connected to the optical fiber.

[0034] Figure 6It is shown that the material of the converging lens ring 12 is polytetrafluoroethylene. The converging lens ring 12 is installed in the middle section of the stepped through hole of the converging lens ring hole 4 in an interference fit manner. The shape is a cylindrical through hole. A cylindrical groove is processed in the hole. The width of the groove must be consistent with the thickness of the converging lens piece. The groove and the converging lens piece are interference fit, and the interference amount is 2 wires.

[0035] Figure 7 It shows that the material of the collection lens ring 13 is polytetrafluoroethylene, and the collection lens ring 13 is installed in the collection lens ring hole 5 in an interference fit manner. The shape is a cylindrical through hole, and a cylindrical groove is processed in the hole. The width of the groove is consistent with the thickness of the collection lens piece. The groove and the collection lens piece are interference fit, and the interference amount is 2 threads.

[0036] An embodiment of the present utility model is as follows:

[0037] The diameter of the optical fiber support 11 is 16 mm, the length is 100 mm of the bottom surface of the box body 1, the width is 80 mm, the length of the top surface is 60 mm, the width is 30 mm, and the height of the box body 1 is 55 mm;

[0038] The diameter of the protective gas hole 2 is 6 mm, and the length of the protective gas hole 2 in the box body 1 is 52 mm;

[0039] The diameter of the camera hole 3 is 10 mm;

[0040] The diameter of the converging lens hole 4 is 16 mm, the diameter of the converging lens ring 12 is 16 mm, and the height is 6 mm;

[0041] The diameter of the collection lens hole 5 is 14 mm, the diameter of the collection lens ring 13 is 14 mm, and the height is 6 mm;

[0042] The upper positioning bolt hole 6 is m3;

[0043] The diameter of the lower positioning bolt hole 7 is 4 mm;

[0044] The diameter of the bracket sealing ring hole 9 is 15mm;

[0045] 30mm;

[0046] The diameter of the bolt hole 14 of the protective cover is 3.2 mm;

[0047] The length of the bottom surface of the protective cover 15 is 60 mm, the width is 30 mm, the diameter of the top surface is 15 mm, and the height of the protective cover 15 is 15 mm.

Claims

1. A bracket for an instrument for detecting steel composition, characterized in that: The invention comprises a box body (1) and a protective cover (15). The box body (1) is a rectangular parallelepiped shell. The bottom surface of the box body (1) is open. The top surface of the box body (1) is a horizontal surface. The area of ​​the top surface is smaller than that of the bottom surface. The top surface and the bottom surface of the box body (1) are connected by four inclined walls. A camera hole (3), a converging lens hole (4), and a collecting lens hole (5) are arranged in sequence along the length direction on the top surface of the box body (1). A high-definition camera is installed on the camera hole (3). A converging lens ring is installed in the converging lens hole (4). A converging lens sheet is installed in the card slot of the converging lens ring. A collecting lens ring is installed in the collecting lens hole (5). A collecting lens sheet is installed in the card slot of the collecting lens ring. An optical fiber support (11) is installed in the collecting lens hole (5) below the collecting lens sheet. A protective gas hole (2) is provided on one side of the converging lens hole (4). The lower end of the protective gas hole (2) is connected to a protective gas pipeline through the box body (1). The top surface of the box body (1) is provided with a protective cover (15).

2. The support for the instrument for detecting steel composition according to claim 1, characterized in that: The edges of both sides of the top surface of the box body (1) are respectively provided with upper positioning bolt holes (6), the upper positioning bolt holes (6) are connected to the bolt holes (14) of the protective cover by bolts, the four corners of the bottom of the box body (1) are respectively provided with lower positioning bolt holes (7), the lower positioning bolt holes (7) are connected to the laser by bolts, the top plane of the box body (1) is provided with a box body sealing ring (8), the box body sealing ring (8) surrounds the protective gas hole (2), the camera hole (3), the convergence lens hole (4), and the collection lens hole (5), and the box body sealing ring (8) is sealed and connected to the bottom edge of the protective cover (15).

3. The support for the instrument for detecting steel composition according to claim 1, characterized in that: The converging lens hole (4) is a cylindrical stepped through hole, the converging lens ring is installed in the middle section of the stepped through hole of the converging lens hole (4), the converging lens ring and the converging lens hole (4) are interference fit, the inner hole of the converging lens ring is a cylindrical through hole, a cylindrical groove is machined in the through hole, the groove width is consistent with the thickness of the converging lens sheet, and the converging lens sheet and the converging lens ring The cylindrical through hole has an interference fit.

4. The support for the instrument for detecting steel composition according to claim 1, characterized in that: The collection lens hole (5) is a cylindrical stepped through hole, the collection lens ring is installed in the middle section of the stepped through hole of the collection lens hole (5), the collection lens ring and the collection lens hole (5) are interference fit, the inner hole of the collection lens ring is a cylindrical through hole, a cylindrical groove is machined in the through hole, the groove width must be consistent with the thickness of the collection lens sheet, and the collection lens sheet and the groove of the cylindrical through hole of the collection lens ring are interference fit.

5. The support for the instrument for detecting steel composition according to claim 1, characterized in that: The optical fiber support (11) is a cylinder, the interior of the optical fiber support (11) is a stepped cylindrical through hole, the cylinder of the optical fiber support (11) is installed below the collection lens ring in the collection lens hole (5), the cylinder of the optical fiber support (11) and the inner wall of the collection lens hole (5) are interference fit, and the lower end of the optical fiber support (11) is connected to the optical fiber.

6. The support for the instrument for detecting steel composition according to claim 1, characterized in that: The protective cover (15) is a hollow shell, the top of the protective cover (15) is a horizontal plane, the bottom of the protective cover (15) is open, the top area is smaller than the bottom area, the bottom edge of the protective cover (15) is provided with a protective cover bolt hole (14), the protective cover bolt hole (14) corresponds to the upper positioning bolt hole (6) of the box body (1), the connecting bolt connects the bottom of the protective cover (15) to the upper top surface of the box body (1), the center position of the top plane of the protective cover (15) is provided with a bracket sealing ring hole (9), the bracket sealing ring hole (9) is a cylindrical through hole, a bracket sealing ring is installed in the bracket sealing ring hole (9), and the upper end of the bracket sealing ring is tightly fitted with the metal surface to be measured.

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