A sample box for metallurgical temperature measurement and sampling

Abstract

This utility model discloses a sample box for metallurgical temperature measurement and sampling, comprising a first shell and a second shell; each of the first and second shells has a semi-cavity structure on its opposite side, and a semi-open structure on the side of each semi-cavity structure. The semi-cavity structure and the semi-open structure, after being connected to the first and second shells, respectively form a sampling cavity and a sampling port communicating with the sampling cavity. The first and second shells are connected by a positioning structure; the positioning structure includes a positioning groove and a positioning protrusion, and an internal and external pressure balance hole communicating with the sampling cavity is provided at the connection between the positioning groove and the positioning protrusion. This utility model effectively prevents leakage of high-temperature molten metal through the sealing structure formed by the annular step and the annular protrusion, enhances the stability of the shell connection by combining the positioning connection method, and the pressure balance hole automatically adjusts the internal and external pressure of the cavity, avoiding the obstruction of sample flow due to negative or positive pressure.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical temperature measurement and sampling, and in particular to a sample box for metallurgical temperature measurement and sampling. Background Technology

[0002] Currently, in steel companies, steel and slag samples are placed in metal sample boxes through pneumatic sampling devices and pipelines. These samples are then transported over long distances between various sampling points in the smelting workshop and the rapid analysis laboratory to achieve the goal of timely analysis and testing of the steel and iron composition.

[0003] While traditional metal sample boxes can perform basic temperature measurement and sample collection functions, they have some problems in practical use. For example, sample leakage is prone to occur during sampling, which not only wastes the sample but may also pollute the surrounding environment. Furthermore, if the leaked sample is hazardous, it can pose a threat to the safety of the operators.

[0004] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a sample box for metallurgical temperature measurement and sampling, so as to overcome the shortcomings of the existing technology.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A sample box for metallurgical temperature measurement and sampling includes a first shell and a second shell that cooperates with the first shell; the first shell and the second shell are respectively provided with a half-cavity structure on opposite sides, and a half-open structure is respectively provided on the side of the half-cavity structure. The half-cavity structure and the half-open structure respectively form a sampling cavity and a sampling port communicating with the sampling cavity after the first shell and the second shell are connected. The first shell and the second shell are connected by a positioning structure.

[0008] The positioning structure includes a positioning groove and a positioning protrusion disposed on the first housing and the second housing. The positioning protrusion is disposed in the positioning groove, and an internal and external air pressure balance hole communicating with the sampling chamber is provided at the connection between the positioning groove and the positioning protrusion.

[0009] Furthermore, the positioning structure is provided in two locations, with the sampling port as the center of symmetry and arranged along the edges of the first and second shells.

[0010] Furthermore, the depth of the positioning groove is greater than the height of the positioning protrusion, and the gap between the top of the positioning protrusion and the bottom of the positioning groove is set as an internal and external air pressure balance hole.

[0011] Furthermore, the first and second housings are provided with sealing structures, which include annular steps and annular protrusions respectively arranged along the side of the semi-cavity structure.

[0012] Furthermore, the annular step is located at the inner edge of the first housing, and the annular protrusion is located at the inner edge of the second housing.

[0013] Furthermore, the main structure of the sample box is disc-shaped, and the sampling port is located on the side of the sample box.

[0014] In summary, this utility model has the following beneficial effects:

[0015] In existing technologies, traditional sample boxes suffer from sample leakage during sampling, which not only causes waste and environmental pollution but also potentially threatens the safety of operators. Existing technologies struggle to balance the pressure difference between the inside and outside of the sampling chamber, preventing samples from smoothly entering the chamber.

[0016] To address the aforementioned problems, this invention reveals that the insufficient sealing of traditional sample boxes primarily stems from design flaws in the shell structure. Insufficient precision in the fitting of the split shell easily leads to gaps. Simultaneously, the internal pressure of the sealed sampling chamber increases under high-temperature conditions, hindering sample flow. Therefore, a structure that can both ensure sealing and balance air pressure needs to be developed. Precise alignment is achieved through a split shell with a positioning structure, and an air pressure balancing channel is incorporated at the connection point, forming a systematic solution.

[0017] This invention effectively prevents leakage of high-temperature molten metal by setting a sealing structure composed of annular steps and annular protrusions. Combined with the positioning connection method, it enhances the connection stability of the shell. The air pressure balance hole automatically adjusts the air pressure inside and outside the cavity, avoiding the obstruction of sample flow due to negative or positive pressure. It has the advantages of improving sealing performance, avoiding the risk of shell separation, and optimizing the integrity of sampling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the sample box for metallurgical temperature measurement and sampling as described in this utility model.

[0019] Figure 2 This is an exploded view of the sample box for metallurgical temperature measurement and sampling as described in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the first housing described in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the second housing described in this utility model.

[0022] Figure 5 A schematic diagram of the first housing without a sealing structure according to this utility model. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with the illustrations and specific embodiments.

[0024] like Figures 1 to 5 As shown, this utility model proposes a sample box for metallurgical temperature measurement and sampling, comprising a first shell 1 and a second shell 2 that cooperates with the first shell 1; the first shell 1 and the second shell 2 are respectively provided with a half-cavity structure 3 on opposite sides, and a half-open structure 4 is respectively provided on the side of the half-cavity structure 3. After the shells are connected, the half-cavity structure 3 and the half-open structure 4 respectively form a sampling cavity 5 and a connected sampling port 6. The shells are connected by a positioning structure 7; the positioning structure 7 includes a positioning groove 71 and a positioning protrusion 72 provided on the two shells, the positioning protrusion 72 is embedded in the positioning groove 71, and an internal and external air pressure balance hole 8 communicating with the sampling cavity 5 is provided at the connection.

[0025] Among them, the semi-cavity structure 3 refers to two shells, each with a recessed semi-enclosed space, which form a complete sealed space when the shells are closed. The semi-open structure 4 refers to a semi-circular notch on the edge of the shell, which, when closed, forms a circular channel as a sample inlet. The positioning groove 71 is a rectangular groove on the edge of the shell, and the positioning protrusion 72 is a rectangular boss of corresponding size, ensuring precise alignment when the shell is closed. The internal and external air pressure balance hole 8 is the gap between the bottom of the positioning groove 71 and the top of the positioning protrusion 72, which is formed by controlling the depth of the groove to be greater than the height of the protrusion, so that the sampling chamber 5 can communicate with the external environment.

[0026] Specifically, when the first housing 1 and the second housing 2 are closed, the two semi-cavity structures 3 form a closed sampling chamber 5, and the semi-open structures 4 combine to form a sampling port 6. The process of the positioning protrusion 72 embedding into the positioning groove 71 forces the edges of the two housings to align, eliminating gaps caused by assembly errors. In the closed state, the gap between the bottom surface of the positioning groove 71 and the top surface of the positioning protrusion 72 forms a pressure balance hole, making the internal pressure of the sampling chamber 5 consistent with the external ambient pressure. During high-temperature sampling, when an external sample enters the chamber through the sampling port 6, the increased pressure inside the chamber is released through the balance hole, preventing pressure differences from hindering sample inflow.

[0027] This application achieves millimeter-level assembly accuracy by using a split housing in conjunction with a positioning structure 7. The assembly gap of the positioning structure 7 is used as an air pressure channel to solve the air pressure difference problem while ensuring sealing.

[0028] Through the above technical solutions, this application effectively prevents sample leakage during metallurgical sampling and ensures the airtightness of the sampling chamber 5. The positioning structure 7 achieves precise alignment of the shell, eliminating gaps caused by assembly deviations. The air pressure balance hole automatically adjusts the air pressure inside and outside the chamber, avoiding obstruction of sample flow due to negative or positive pressure. The split shell design reduces processing difficulty, and the semi-cavity structure 3 improves space utilization, making it suitable for high-temperature and high-pressure metallurgical environments.

[0029] Example 1

[0030] This application further proposes that the positioning structure 7 is provided in two places, and the positioning structure 7 is provided along the edge of the first shell 1 and the second shell 2 with the sampling port 6 as the center of symmetry.

[0031] The positioning structure 7 has two locations, meaning that two independent positioning units are arranged on both sides of the shell connection area. Specifically, this can be achieved using a mechanical connection method of groove and protrusion engagement. The two positioning units generate constraint forces synchronously during the closing process. The positioning units are arranged along the edge with the sampling port 6 as the center of symmetry, meaning that the spatial positions of the two positioning units are mirror-symmetrical with respect to the sampling port 6. This can be achieved by arranging the positioning units at symmetrical positions along the circumferential edge of the shell, with the center line of symmetry coinciding with the axis of the sampling port 6.

[0032] Specifically, the two positioning structures 7 are uniformly constrained when the shell is closed, ensuring that the contact surfaces of the first shell 1 and the second shell 2 remain parallel. By arranging the positioning structures 7 symmetrically at the edge of the shell, the torques generated by the two positioning units during the closing process cancel each other out, preventing shell tilting or misalignment caused by unilateral force. The spatial correspondence between the center of symmetry and the sampling port 6 ensures that the axis of the sampling port 6 is in the same plane as the center of gravity of the shell after closure, reducing the sealing surface gap caused by assembly deviations. The positioning structures 7, set along the edge of the shell, make full use of the circumferential space, forming a stable multi-point support system within limited dimensions, with two positioning points symmetrically distributed.

[0033] This solution achieves multi-point balanced constraints while maintaining structural compactness through symmetrically distributed edge positioning structures 7, thus solving the stress concentration problem caused by single-point positioning.

[0034] Through the above technical solutions, this application effectively prevents sample leakage caused by shell misalignment and improves the sealing reliability of the high-temperature melt sampling process. The symmetrically distributed positioning structure 7 ensures uniform force distribution when the shell is closed, avoiding the impact of local deformation on the sealing surface of the sampling port 6. The edge positioning design enhances the overall rigidity of the shell connection and maintains the structural integrity of the sampling chamber 5 during long-distance transportation.

[0035] Example 2

[0036] This application further proposes that the groove depth of the positioning groove 71 is set to be greater than the height of the positioning protrusion 72, and the gap between the top of the positioning protrusion 72 and the bottom surface of the positioning groove 71 is configured as an internal and external air pressure balance hole 8.

[0037] The groove depth of the positioning groove 71 refers to the maximum accommodating space dimension of the groove along the axial direction. Specifically, it can be formed into a groove structure of a specific depth using machining methods. This depth is designed to exceed the height of the positioning protrusion 72 to create a gap during assembly. The height of the positioning protrusion 72 refers to the maximum extension dimension of the protrusion along the axial direction. Specifically, it can be formed into a protrusion structure matching the positioning groove 71 through stamping or casting processes. Its height is controlled to be less than the groove depth, thus creating a gap when the two contact. The internal and external air pressure balance hole 8 refers to the connecting channel formed by the gap between the positioning groove 71 and the positioning protrusion 72. This channel is used to balance the air pressure difference between the inside of the sampling chamber 5 and the external environment to facilitate sample entry into the sampling chamber 5.

[0038] Specifically, when the first housing 1 and the second housing 2 are connected via the positioning structure 7, the positioning protrusion 72 is inserted into the positioning groove 71. Since the depth of the positioning groove 71 is greater than the height of the positioning protrusion 72, a gap is formed between them in the axial direction. This gap serves as a pressure balancing channel, creating communication between the inside of the sampling chamber 5 and the external environment. During sampling, when a high-temperature sample enters the sampling chamber 5, the pressure generated by the thermal expansion of the internal gas is released outward through this gap, preventing pressure buildup that could cause displacement at the housing connection or damage to the sealing structure, and preventing excessive internal pressure from hindering the sample from entering the sampling chamber 5. Furthermore, this gap eliminates the need for separate through-hole machining on the housing; instead, the pressure balancing function is achieved directly using the assembly gap of the positioning structure 7, maintaining the integrity of the overall housing structure and simplifying the machining process.

[0039] Example 3

[0040] This application further proposes that the first housing 1 and the second housing 2 are provided with a sealing structure, the sealing structure including an annular step 9 and an annular protrusion 10 respectively provided along the side of the semi-cavity structure 3.

[0041] The annular step 9 refers to a continuous recessed structure formed along the side of the semi-cavity structure 3. Specifically, it can be formed into an annular groove on the inner edge of the first housing 1 by machining or molding, which is used to form a fitting contact surface with the annular protrusion 10. The annular protrusion 10 refers to a continuous protruding structure that is complementary in shape to the annular step 9. Specifically, it can be formed into an annular bulge on the inner edge of the second housing 2 by stamping or casting. Its cross-sectional dimensions match the groove of the annular step 9, and it is embedded in the groove to form a physical barrier when the housing is closed.

[0042] Specifically, when the first housing 1 and the second housing 2 are closed, the annular protrusion 10 is pressed into the groove of the annular step 9, forming two continuous contact sealing surfaces. The first sealing surface is formed by the contact between the top of the annular protrusion 10 and the bottom surface of the groove, and the second sealing surface is formed by the contact between the side of the annular protrusion 10 and the sidewall of the groove. Under high-temperature conditions, the thermal expansion of the housing material leads to an increase in contact pressure. The geometric fit between the annular step 9 and the protrusion ensures that the expansion deformation is evenly distributed along the depth direction of the groove, avoiding sealing failure caused by stress concentration at a single point.

[0043] Through the above technical solution, this application achieves sealing at the shell joint during metallurgical sampling, preventing high-temperature molten samples from seeping out from the shell's closed surface, avoiding component loss and safety hazards caused by sample leakage, and ensuring that the sample box maintains the complete closed state of its internal cavity during transportation.

[0044] Example 4

[0045] This application further proposes that an annular step 9 is located at the inner edge of the first housing 1, and an annular protrusion 10 is located at the inner edge of the second housing 2.

[0046] The annular step 9 refers to a continuous annular recessed structure formed along the inner side of the parting surface of the first shell 1, which can be achieved by machining or mold forming, and its width matches the size of the annular protrusion 10. The annular protrusion 10 refers to a continuous annular protruding structure formed along the inner side of the parting surface of the second shell 2, which can be formed by stamping or casting, and its cross-sectional shape complements that of the annular step 9.

[0047] Specifically, when the first shell 1 and the second shell 2 are closed, the annular step 9 and the annular protrusion 10 form a circumferentially continuous interlocking structure on the inner side of the shell joint. Since both the step and the protrusion are located on the inner edge, they automatically align and contact each other during the shell closure process, forming two physical barriers. The first barrier is formed by the step sidewall and the outer surface of the protrusion adhering to each other, preventing liquid samples from penetrating along the parting surface; the second barrier is formed by the step bottom surface and the protrusion top surface pressing together, preventing solid particles from escaping from the joint. This double-sealing structure forms a closed protection inside the disc-shaped shell, preventing leakage of the sample due to vibration or pressure changes during transport.

[0048] Compared to existing technologies, traditional sample boxes only employ planar parting surface mating or a single sealing groove structure, which cannot achieve effective sealing within a limited space. This solution, through the mating of steps and protrusions on the inner edge, forms a self-aligning sealing system when the shell is closed, solving the sealing failure problem caused by assembly deviations in traditional structures.

[0049] Through the above technical solution, this application achieves a reliable seal at the connection of the sample box shell, effectively preventing liquid or solid samples from leaking from the parting surface during transportation, thus avoiding sample contamination and operational safety hazards.

[0050] Example 5

[0051] This application further proposes that the main structure of the sample box is disc-shaped, and the sampling port 6 is located on the side of the sample box.

[0052] The disc-shaped main structure refers to the sample box being a flattened cylinder. Specifically, it can be achieved using a disc-shaped shell structure with an outer diameter matching the inner diameter of the pipe, and its axial thickness can be less than its radial dimension. This structure reduces the resistance to movement of the sample box within the pipe, decreasing the frequency of collisions with the pipe wall. The side sampling port 6 refers to a channel structure penetrating the side wall of the sample box. Specifically, it can be achieved using a tubular opening extending radially along the disc-shaped shell, with the opening axis perpendicular to the axis of the disc-shaped main body.

[0053] In this document, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of clarifying the technical solution and for the convenience of description, and therefore should not be construed as limiting the present utility model.

[0054] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sample box for metallurgical temperature measurement and sampling, characterized in that, It includes a first housing (1) and a second housing (2) that cooperates with the first housing (1); the first housing (1) and the second housing (2) are respectively provided with a half cavity structure (3) on opposite sides, and a half opening structure (4) is respectively provided on the side of the half cavity structure (3). The half cavity structure (3) and the half opening structure (4) form a sampling cavity (5) and a sampling port (6) communicating with the sampling cavity (5) respectively after the first housing (1) and the second housing (2) are connected. The first housing (1) and the second housing (2) are connected by a positioning structure (7). The positioning structure (7) includes a positioning groove (71) and a positioning protrusion (72) provided on the first housing (1) and the second housing (2). The positioning protrusion (72) is provided in the positioning groove (71), and an internal and external air pressure balance hole (8) communicating with the sampling chamber (5) is provided at the connection between the positioning groove (71) and the positioning protrusion (72).

2. The sample box for metallurgical temperature measurement and sampling according to claim 1, characterized in that, The positioning structure (7) is provided in two places, and the positioning structure (7) is set along the edge of the first shell (1) and the second shell (2) with the sampling port (6) as the center of symmetry.

3. The sample box for metallurgical temperature measurement and sampling according to claim 1, characterized in that, The groove depth of the positioning groove (71) is greater than the height of the positioning protrusion (72), and the gap between the top of the positioning protrusion (72) and the bottom surface of the positioning groove (71) is set as an internal and external air pressure balance hole (8).

4. The sample box for metallurgical temperature measurement and sampling according to claim 1, characterized in that, The first housing (1) and the second housing (2) are provided with sealing structures, which include annular steps (9) and annular protrusions (10) respectively arranged along the side of the semi-cavity structure (3).

5. The sample box for metallurgical temperature measurement and sampling according to claim 4, characterized in that, The annular step (9) is located at the inner edge of the first housing (1), and the annular protrusion (10) is located at the inner edge of the second housing (2).

6. The sample box for metallurgical temperature measurement and sampling according to claim 1, characterized in that, The main structure of the sample box is disc-shaped, and the sampling port (6) is located on the side of the sample box.

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