A tensile stress testing device and testing method

Abstract

This invention discloses a tensile stress detection device and method, belonging to the field of stress detection technology. The stress detection device of this invention includes a first connecting member, a second connecting member, a first mounting member, a second mounting member, an adjusting and fixing member, a locking member, and a stress detection component. The first connecting member connects to a first stress member, the second connecting member connects to a second stress member, and the stress detection component is disposed between the first and second mounting members. The first connecting member and the second mounting member, and the second connecting member and the first mounting member, are fixedly connected by the adjusting and fixing member and the locking member. This invention can detect extremely large tensile force changes between two stress members, thus enabling real-time detection of stress increase trends, precise control of equipment operating parameters, effective control of impact stress loads, and ensuring safe and stable equipment operation.

Description

Technical Field

[0001] This invention relates to the field of stress testing technology, and more specifically, to a tensile stress testing device and testing method. Background Technology

[0002] With the continuous development of modern large-scale industrial production characterized by high load, high pressure, high speed, and rapid flow, it is impossible to monitor the ultra-high stress changes of equipment, containers, and pipelines in real time, accurately grasp the equipment operating status, combine the process characteristics of equipment operation, understand the corresponding stress fluctuation patterns, predict the stress increase trend, accurately control equipment operating parameters, effectively control stress shock waves, and prevent the frequent equipment failures and serious accidents.

[0003] On the other hand, with the continuous development of intelligent manufacturing technology, stress changes during equipment operation can be detected in real time to meet the needs of ultra-large range stress fluctuation detection. This provides real-time and accurate stress fluctuation big data for intelligent control, which facilitates precise adjustment of equipment operating parameters and safe control of impact stress peaks. This is a requirement for truly achieving high-quality development.

[0004] Regarding real-time stress detection, patent number CN201822166401.0 discloses a tensile force detection device between tension members. This application includes a pushing mechanism with a pushing force output actuator. The pushing mechanism has a first pushing part and a second pushing part facing opposite directions, used to push two adjacent tension members to separate them. A force sensor is located on the force transmission path of the pushing mechanism. The pushing force output actuator causes the first and second pushing parts to apply opposing pushing forces to the two adjacent tension members. Under the action of this pushing force, the two adjacent tension members separate. When the two tension members separate, the measurement value of the force sensor is the tensile force experienced by the tension member. This application does not require a force sensor on each tension line, saving costs. However, the structural design of this application is relatively complex, making it impossible to calibrate and adjust the stress under stable operating conditions online, and it is difficult to achieve ultra-large range stress monitoring.

[0005] Chinese Patent Application No. CN2016107156024 discloses a device for detecting the hot blast outlet stress of a single-row hot blast stove in a blast furnace, its application system, and method. This application is a prior invention patent filed by the inventor. The device includes upper and lower pressure plates, a pressure head, and a pressure sensor. The working surfaces of the upper and lower pressure plates face each other. The bottom end of the pressure sensor is tightly attached to the working surface of the lower pressure plate, and the sensing end is pressed against the bottom end of the pressure head. The pressure sensor is connected to the blast furnace control system. The application system includes four sets of stress devices, divided into two groups, symmetrically arranged on both sides of two H-beams serving as a tie rod between the hot blast main pipe and the hot blast stove. The two H-beams are fixedly connected by flanges. Each group of stress devices is symmetrically arranged above and below the flanges, and the two sets of devices for detecting the hot blast outlet stress of a single-row hot blast stove are fixed together by bolts passing through the two upper pressure plates, two lower pressure plates, and two flanges. This application collects and analyzes stress change data by setting stress devices at the tie rod connection points. However, the four stress devices have complex structures and use an indirect stress detection method, which does not detect stress accurately enough to achieve precise control. Summary of the Invention

[0006] 1. The technical problem that the invention aims to solve

[0007] In view of the shortcomings of the existing technology, the present invention provides a tensile stress detection device and detection method. The present invention can directly detect the large tensile force changes between two stress components. Thus, the stress detection device can be applied to equipment, containers, and pipelines to understand the stress fluctuation law of the corresponding equipment, containers, and pipelines, predict the stress increase trend, accurately control the equipment operating parameters, effectively control the impact stress load, and ensure the safe and stable operation of the equipment.

[0008] 2. Technical solution

[0009] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0010] The present invention provides a stress detection device comprising a first connector, a second connector, a first mounting component, a second mounting component, an adjusting and fixing component, a locking component, and a stress detection component. The first connector is connected to a first stress component, the second connector is connected to a second stress component, and the stress detection component is disposed between the first mounting component and the second mounting component. The first connector and the second mounting component, and the second connector and the first mounting component are fixedly connected by the adjusting and fixing component and the locking component.

[0011] Furthermore, the first connecting member, the second connecting member, the first mounting member, and the second mounting member adopt a flange structure, the adjusting and fixing member adopts a bolt or a screw, and the locking member adopts a nut.

[0012] Furthermore, the first stress member and the second stress member are circular parts, and the parts where the first stress member and the second stress member are connected to the first connector and the second connector are provided with threaded structures, and the first connector and the first stress member, and the second connector and the second stress member are connected by threads.

[0013] Furthermore, the first stress member includes an H-beam and a mounting plate. The mounting plate is provided at one end of the H-beam, and a first mounting hole is provided on the mounting plate. The other end of the H-beam is welded and fixed to the first connector. The second stress member has the same shape and structure as the first stress member.

[0014] Furthermore, the stress detection component employs a pressure-type weighing sensor.

[0015] Furthermore, the flange holes on the first connector, the second connector, the first mounting component, and the second mounting component are all evenly distributed; the adjusting and fixing component connecting the first connector and the second mounting component passes through the odd-numbered flange holes; correspondingly, the adjusting and fixing component connecting and fixing the second connector and the first mounting component passes through the even-numbered flange holes, or vice versa.

[0016] Furthermore, the stress detection device is also equipped with an adjustment component, which works in conjunction with the locking component to adjust the stress on the stress detection component.

[0017] Furthermore, the flange structures of the first connector, the second connector, the first mounting component, and the second mounting component are circular, equilateral triangular, square, or regular polygonal.

[0018] The present invention provides a stress detection method, which uses the aforementioned detection device to detect stress changes between a first stress member and a second stress member.

[0019] The stress detection method of the present invention comprises the following steps:

[0020] Step 1: The first connector connects to the first stress member, and the second connector connects to the second stress member;

[0021] Step 2: Install the stress detection component between the first mounting component and the second mounting component;

[0022] Step 3: Pass the adjusting fastener through the odd-numbered flange holes to connect the first connector and the second mounting piece; pass the adjusting fastener through the even-numbered flange holes to connect the second connector and the first mounting piece.

[0023] Step 4: Adjust the locking and adjusting components according to the on-site instrument display, and tighten the adjusting fasteners until the stress detection component displays data;

[0024] Step 5: When the first stress member and the second stress member are subjected to stress changes, the stress detection device detects the stress data in real time.

[0025] 3. Beneficial effects

[0026] Compared with existing known technologies, the technical solution provided by this invention has the following significant advantages:

[0027] (1) A stress detection device of the present invention comprises a stress detection component disposed between a first mounting component and a second mounting component, wherein the first connecting component and the second mounting component, and the second connecting component and the first mounting component are fixedly connected by adjusting fixing components and locking components; wherein the first connecting component, the second connecting component, the first mounting component, and the second mounting component adopt a flange structure, the adjusting fixing component adopts a bolt or a screw, and the locking component adopts a nut; through a simple flange and bolt combination structure, real-time detection of the tensile force borne by the first stress component and the second stress component is realized, the structural design is simple and the implementation cost is low;

[0028] (2) A stress detection device of the present invention uses a pressure-type weighing sensor for stress detection, with a measuring range of up to 5×10⁻⁶. 6 N is capable of detecting the ultra-large stress changes of the first stress component and the second stress component in real time;

[0029] (3) In the stress detection device of the present invention, when the first stress member and the second stress member are circular, the first connecting member is connected to the first stress member and the second connecting member is connected to the second stress member by threads, which is convenient for installation and easy for adjustment.

[0030] (4) When the first stress member and the second stress member of the present invention adopt the structure of H-beam steel connecting flange mounting plate, it is especially suitable for ultra-large equipment. As long as the number of bolts is large enough, it can meet the ultra-large stress detection requirements. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the stress detection device in Embodiment 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of the stress detection device in Embodiment 2 of the present invention;

[0033] Figure 3 for Figure 2 The sectional view at point A shown;

[0034] Figure 4 for Figure 2 The sectional view at point B shown.

[0035] Explanation of the labels in the diagram:

[0036] 11. First stress member; 111. H-beam; 112. First mounting hole; 113. Mounting plate; 12. Second stress member; 21. First connector; 211. Second mounting hole; 22. Second connector; 31. First mounting component; 32. Second mounting component; 4. Adjustment and fixing component; 51. Locking component; 52. Adjustment component; 6. Stress detection component. Detailed Implementation

[0037] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0038] Example 1

[0039] Combination Figure 1 This embodiment of a stress detection device includes a first connecting member 21, a second connecting member 22, a first mounting member 31, a second mounting member 32, an adjusting and fixing member 4, a locking member 51, and a stress detection member 6. The first connecting member 21, the second connecting member 22, the first mounting member 31, and the second mounting member 32 are flange structures; the adjusting and fixing member 4 is a bolt; and the locking member 51 is a nut.

[0040] The stress detection component 6 uses a pressure-type load cell. The pressure-type load cell has a measuring range of up to 5 × 10⁶. 6 Newton.

[0041] In this embodiment, the first stress member 11 and the second stress member 12 are circular. The first connecting member 21 and the first stress member 11 are connected by a thread for easy adjustment. The adjusting fixing member 4 passes through the first connecting member 21 and the second mounting member 32 and is connected and fixed by the locking member 51.

[0042] The second connector 22 and the second stress member 12 are connected by a thread for easy adjustment. The adjusting fastener 4 passes through the second connector 22 and the first mounting member 31 and is fixed by the locking member 51.

[0043] The stress detection component 6 is disposed between the first mounting component 31 and the second mounting component 32.

[0044] The flange holes on the first connector 21, second connector 22, first mounting component 31, and second mounting component 32 are all evenly distributed and have an even number. The adjusting fastener 4 connecting the first connector 21 and the second mounting component 32 passes through the odd-numbered flange holes; correspondingly, the adjusting fastener 4 connecting and fixing the second connector 22 and the first mounting component 31 passes through the even-numbered flange holes, or vice versa. The adjusting fasteners 4 are arranged alternately and evenly to ensure that the stress detection component 6 is subjected to uniform force.

[0045] In actual use, all adjusting fasteners 4 need to be tightened to the stress detection component 6 to display data, and adjusting component 52, i.e. adjusting nut, is set. The pressure weighing sensor is fixed firmly by using the adjusting nut and locking nut.

[0046] Example 2

[0047] It is worth noting that the flange structure of the first connector 21, the second connector 22, the first mounting component 31, and the second mounting component 32 is not limited to a circle. It can be an equilateral triangle, a square, or a regular polygon, as long as the symmetrical staggered arrangement does not affect the uniform arrangement of the adjustment fixing component 4 and ensures that the pressure weighing sensor is subjected to uniform force.

[0048] The first stress member 11 and the second stress member 12 are not limited to circular tie rods, but can be combined with... Figures 2-4 This embodiment of the stress detection device is basically the same as that of Embodiment 1, except that: the first stress member 11 includes an H-beam 111 and a mounting plate 113. The mounting plate 113 is provided at one end of the H-beam 111, and a first mounting hole 112 is formed on the mounting plate 113. The other end of the H-beam 111 is welded and fixed to the first connecting member 21. The second stress member 12 has the same shape and structure as the first stress member 11. The structural design of the first stress member 11 and the second stress member 12 is suitable for ultra-large equipment, as long as the number and size of the bolts are sufficient to meet the safety requirements of ultra-large stress.

[0049] Figure 4 The second mounting hole 211 shown is the flange hole opened on the first connector 21. The flange holes are required to be even in number and evenly distributed.

[0050] Example 3

[0051] This embodiment of a stress detection method utilizes the detection device described in Embodiment 1 to detect stress changes between the first stress member 11 and the second stress member 12. The specific steps are as follows:

[0052] Step 1: The first connector 21 connects to the first stress member 11, and the second connector 22 connects to the second stress member 12;

[0053] Step 2: Install the stress detection component 6 between the first mounting component 31 and the second mounting component 32;

[0054] Step 3: Pass the adjusting fastener 4 through the odd-numbered flange holes to connect the first connector 21 and the second mounting piece 32; pass the adjusting fastener 4 through the even-numbered flange holes to connect the second connector 22 and the first mounting piece 31.

[0055] Step 4: Adjust locking component 51 and adjusting component 52 according to the on-site instrument display, and tighten adjusting fastener 4 until stress detection component 6 displays data;

[0056] Step 5: When the first stress member 11 and the second stress member 12 are subjected to stress changes, the stress detection component 6 detects the stress data in real time.

[0057] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A stress detection device, characterized in that: It includes a first connector (21), a second connector (22), a first mounting component (31), a second mounting component (32), an adjustment fixing component (4), a locking component (51), and a stress detection component (6). The first connector (21) is connected to the first stress member (11), and the second connector (22) is connected to the second stress member (12). The stress detection component (6) is disposed between the first mounting component (31) and the second mounting component (32). The first connector (21) and the second mounting component (32), and the second connector (22) and the first mounting component (31) are fixedly connected by the adjustment fixing component (4) and the locking component (51). The first connecting piece (21), the second connecting piece (22), the first mounting piece (31), and the second mounting piece (32) adopt a flange structure, the adjusting and fixing piece (4) adopts a bolt or a screw, and the locking piece (51) adopts a nut accordingly; The first stress member (11) and the second stress member (12) are circular parts. The parts where the first stress member (11) and the second stress member (12) are connected to the first connector (21) and the second connector (22) are provided with threaded structures. The first connector (21) is connected to the first stress member (11), and the second connector (22) is connected to the second stress member (12) by threads. The first stress member (11) includes an H-beam (111) and a mounting plate (113). The mounting plate (113) is provided at one end of the H-beam (111), and a first mounting hole (112) is provided on the mounting plate (113). The other end of the H-beam (111) is welded and fixed to the first connector (21). The second stress member (12) has the same shape and structure as the first stress member (11). The stress detection component (6) mentioned above uses a pressure-type weighing sensor; The flange holes on the first connector (21), the second connector (22), the first mounting component (31), and the second mounting component (32) are all evenly arranged; the adjusting and fixing component (4) connecting the first connector (21) and the second mounting component (32) passes through the odd-numbered flange holes; correspondingly, the adjusting and fixing component (4) connecting and fixing the second connector (22) and the first mounting component (31) passes through the even-numbered flange holes, or vice versa; An adjustment component (52) is also provided, which cooperates with the locking component (51) to adjust the stress on the stress detection component (6).

2. The stress detection device according to claim 1, characterized in that: The flange structure of the first connector (21), the second connector (22), the first mounting component (31), and the second mounting component (32) is circular, equilateral triangle, square, or regular polygon.

3. A stress detection method, characterized in that: The stress change between the first stress member (11) and the second stress member (12) is detected using the detection device as described in any one of claims 1-2.

4. The stress detection method according to claim 3, characterized in that, The steps are as follows: Step 1: The first connector (21) connects to the first stress member (11), and the second connector (22) connects to the second stress member (12); Step 2: Install the stress detection component (6) between the first mounting component (31) and the second mounting component (32); Step 3: Pass the adjusting fastener (4) through the odd-numbered flange holes to connect the first connector (21) and the second mounting piece (32); pass the adjusting fastener (4) through the even-numbered flange holes to connect the second connector (22) and the first mounting piece (31); Step 4: Adjust the locking component (51) and adjusting component (52) through the field instrument display, and tighten the adjusting fixing component (4) until the stress detection component (6) displays data; Step 5: When the first stress member (11) and the second stress member (12) are subjected to stress changes, the stress detection component (6) detects the stress data in real time.

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