A Measuring Device and Measuring Method for the Deformation Amount of a Temperature-Deformation Sensitive Element

Abstract

The present invention provides a device for measuring the deformation amount of a temperature deformation sensitive element, which comprises a main body. A heating groove is arranged in the main body, and an inner cavity for accommodating the temperature deformation sensitive element is defined in the heating groove. A heating element and a heating medium are arranged in the inner cavity. Wherein, at least one measuring unit is arranged in the main body. The measuring unit comprises a displacement assembly connected to the temperature deformation sensitive element and a detection element connected to the displacement assembly. The displacement assembly can convert the dimensional change data of the temperature deformation sensitive element into displacement data that can be detected in real time by the detection element.

Description

Technical Field

[0001] The present invention relates to a device for measuring the deformation amount of a temperature-deformation sensitive element, and a method for detecting the deformation amount of a temperature-deformation sensitive element. Background Art

[0002] Under the existing technology, temperature-deformation sensitive elements such as columnar foaming materials sensitive to temperature deformation are very likely to deform in a water bath. When such deformation occurs, workers usually need to use detection tools such as sensors to detect the deformation size of the temperature-deformation sensitive element. However, during the water bath process, since conventional sensors cannot withstand high-temperature water environments for a long time, they are not applicable to high-temperature water bath processes.

[0003] Patent CN204694557U discloses a device for measuring the tensile deformation recovery performance of an epoxy resin trabecula. It includes a stepping motor loading device, a water bath circulation temperature control system, and a camera device; among them, the water bath circulation temperature control system has a water bath circulation box body with an upward opening direction. A baffle is provided in the middle of the water bath circulation box body, and a number of mounting holes are opened on the baffle. A temperature controller for adjusting the water temperature in the water bath circulation box body is also provided in the water bath circulation box body; the stepping motor loading device includes an E-shaped mounting bracket, a slide bar, a fixed-end clamp, a movable-end clamp, a lead screw, a motor, etc.; the camera device includes a camera fixed on the top of the water bath circulation box body for observing the epoxy resin trabecula, and a video capture card for collecting the data of the camera.

[0004] The detection device provided by the above patent can effectively measure the whole process of the tensile deformation recovery of the epoxy resin trabecula. However, this device realizes the transmission of the whole process of the tensile deformation recovery of the epoxy resin trabecula to a computer and draws a tensile deformation-recovery curve through the cooperation of the camera device and the video capture card, which belongs to an indirect measurement method. In the water bath process, it is easy to obtain inaccurate measurement results due to problems such as water temperature changes, water bubbles in the water, or refraction of water, resulting in low measurement accuracy and large deviation. Summary of the Invention

[0005] In view of the above technical problems, the present invention aims to provide a device for measuring the deformation amount of a temperature-deformation sensitive element. The device for measuring the deformation amount of the temperature-deformation sensitive element according to the present invention can accurately measure the deformation amount of the temperature-deformation sensitive element during the temperature change process.

[0006] According to a first aspect of the present invention, there is provided a device for measuring the deformation amount of a temperature-deformation sensitive element, including: a main body, a heating tank is provided in the main body, an inner cavity for accommodating the temperature-deformation sensitive element is defined in the heating tank, and a heating element and a heating medium are provided in the inner cavity.

[0007] Among them, at least one measuring unit is arranged inside the body. The measuring unit includes a displacement component connected to a temperature deformation sensitive element and a detection element connected to the displacement component. The displacement component can convert the dimensional change data of the temperature deformation sensitive element into displacement data that can be detected in real time by the detection element.

[0008] In a preferred embodiment, the displacement component includes a fixed rod and a movable rod connected together by a first connecting rod. A gap is formed between the fixed rod and the movable rod, and the temperature deformation sensitive element extends through the gap. A first slide rail is arranged on the first connecting rod, and the movable rod can move freely along the direction of the dimensional change of the temperature deformation sensitive element, so that the temperature deformation sensitive element is always in contact with both the fixed rod and the movable rod at the same time.

[0009] In a preferred embodiment, the movable rod is configured to be generally "T"-shaped, and it has a first rod body perpendicular to the moving direction of the movable rod and a second rod body parallel to the moving direction of the movable rod. The detection element is connected to the first rod body.

[0010] In a preferred embodiment, fasteners are respectively arranged on one sides of the fixed rod and the movable rod close to the temperature deformation sensitive element.

[0011] In a preferred embodiment, one end of the first rod body close to the detection element extends to the outside of the heating tank.

[0012] In a preferred embodiment, a heat insulation plate is further arranged between the detection element and the heating medium.

[0013] In a preferred embodiment, a counterweight assembly is further connected to the detection element. The counterweight assembly includes a counterweight rod, a counterweight block, and a fixed pulley for connecting the counterweight rod and the counterweight block. A top rod is arranged in the cavity above the heating tank, and the fixed pulley is connected to the top rod.

[0014] In a preferred embodiment, the counterweight assembly is arranged in two groups, and the two groups of counterweight assemblies are symmetrically arranged on both sides of the detection element.

[0015] In a preferred embodiment, a second slide rail is arranged on the top rod, so that the measuring unit can slide along the top rod.

[0016] In a preferred embodiment, at least one positioning member is further arranged in the inner cavity on one side of the temperature deformation sensitive element away from the detection element, and a positioning groove is arranged on the positioning member.

[0017] In a preferred embodiment, a thermometer is further disposed in the inner cavity, and a data remote transmission system is also connected to the thermometer and the monitoring element.

[0018] In a preferred embodiment, the heating medium is clear water or acid solution, the detection element is a displacement sensor, and the thermometer is a temperature sensor.

[0019] According to the second aspect of the present invention, a method for detecting the deformation amount of a temperature-deformation sensitive element is provided. The method includes:

[0020] Step 1, place the temperature-deformation sensitive element in the inner cavity so that the temperature-deformation sensitive element passes through the gap in the displacement assembly and the movable rod is in contact with the upper end of the temperature-deformation sensitive element;

[0021] Step 2, install a counterweight so that the counterweight assembly pulls the displacement assembly to move vertically upward until the fixed rod is in contact with the lower end of the temperature-deformation sensitive element;

[0022] Step 3, heat the heating medium in the heating tank so that the temperature-deformation sensitive element deforms and pushes the movable rod to move;

[0023] Step 4, respectively record the displacement data of the movement of the movable rod and the temperature change data of the heating medium through the detection element and the thermometer;

[0024] Step 5, remotely transmit and analyze the data recorded in Step 4 through the data remote transmission system. Description of the Drawings

[0025] The present invention will be described below with reference to the drawings.

[0026] Figure 1 Shows a schematic diagram of a device for measuring the deformation amount of a temperature-deformation sensitive element according to an embodiment of the present invention.

[0027] Figure 2 For Figure 1 A schematic diagram of the measuring unit of the device for measuring the deformation amount of the temperature-deformation sensitive element shown.

[0028] In this application, all the drawings are schematic drawings, only used to illustrate the principle of the present invention and not drawn according to the actual ratio. Detailed Embodiments

[0029] The present invention will be introduced below through the drawings. In this article, the terms "above" and "below" are understood with respect to the orientation shown in the drawings.

[0030] Figure 1Shows a device 100 for measuring the deformation amount of a temperature and deformation sensitive element according to an embodiment of the present invention. As Figure 1 shown, the device 100 for measuring the deformation amount of the temperature and deformation sensitive element includes a body 10. A heating tank 20 is provided inside the body 10. An inner cavity 21 is defined inside the heating tank 20, and a heating medium 22 is provided inside the inner cavity 21. The heating medium can be, for example, clear water or acid solution. At the same time, a heating element (not shown) is also provided inside the heating tank, and the heating element can heat the heating medium, thereby changing the temperature of the heating medium.

[0031] A temperature and deformation sensitive element 25 to be detected is also placed inside the heating medium 22. The temperature and deformation sensitive element 25 is made of a temperature and deformation sensitive material and can deform when the temperature changes, thereby changing the size of the temperature and deformation sensitive element 25.

[0032] At the same time, at least one measuring unit 30 is also provided inside the body 10.

[0033] Figure 2 For Figure 1 a schematic diagram of the measuring unit 30 of the device 100 for measuring the deformation amount of the temperature and deformation sensitive element shown, as Figure 2 shown, the detection unit 30 includes a displacement assembly 32 provided inside the heating medium 22. The displacement assembly 32 includes a fixed rod 322 and a movable rod 324, and a gap 323 is formed between the fixed rod 322 and the movable rod 324. The fixed rod 322 and the movable rod 324 are connected together by two first connecting rods 325, thereby forming a square frame body with a gap 323. Thus, the temperature and deformation sensitive element 25 to be detected can pass through the frame body, thereby realizing the connection between the displacement assembly 32 and the temperature and deformation sensitive element 25.

[0034] At the same time, a first slide rail 326 is provided on the first connecting rod 325, so that the movable rod 324 can move freely along the extension direction of the first slide rail 326 (in the vertical direction in this embodiment) under the action of an external force.

[0035] When the temperature and deformation sensitive element 25 passes through the displacement assembly 32, by lifting the displacement assembly 32, the fixed rod 322 can be made to contact the lower end of the temperature and deformation sensitive element 25, and by pushing the movable rod 324, the movable rod 324 can be made to contact the upper end of the temperature and deformation sensitive element 25.

[0036] When the temperature deformation sensitive element 25 is simultaneously in contact with the movable rod 324 and the fixed rod 322, when the temperature of the heating medium 22 changes and causes the size of the temperature deformation sensitive element 25 to increase, it can push the movable rod 324 to move upward on the first slide rail 326; when the size of the temperature deformation sensitive element 25 decreases, under the action of gravity, the movable rod 324 moves downward on the first slide rail 326. It is easy to understand that in this process, the displacement of the movable rod 324 moving on the first slide rail 326 is equal to the amount of size change of the temperature deformation sensitive element 25 in this direction.

[0037] In a preferred embodiment, fasteners 327 are further provided on one side of the fixed rod 322 and the movable rod 324 close to the temperature deformation sensitive element respectively. The fasteners 327 can closely adhere to the temperature deformation sensitive element 25, thereby reducing the error between the size change data of the temperature deformation sensitive element 25 and the displacement data of the movable rod 324, increasing the accuracy of detection, and at the same time can also fix the temperature deformation sensitive element 25 to prevent it from shaking and affecting the detection result.

[0038] To ensure the close fit between the fastener 327 and the temperature deformation sensitive element 25, the fastener 327 can be constructed into a shape adapted to the temperature deformation sensitive element 25. For example, when the temperature deformation sensitive element 25 is cylindrical, the fastener 327 is set as an arc with the same radian as the cylinder; when the temperature deformation sensitive element 25 is prismatic or pyramidal, the fastener 327 is constructed into a square groove shape or a pointed groove shape.

[0039] As Figure 2 shown, the measuring unit 30 further includes a detection element 36 connected to one end of the displacement assembly 32 away from the temperature deformation sensitive element 25. The detection element 36 can be, for example, a displacement sensor. The detection element 36 is fixedly connected to two first connecting rods 325 through a second connecting rod 362, so that when the detection element 36 moves, it can drive the entire displacement assembly 32 to move synchronously.

[0040] At the same time, the movable rod 324 is constructed to be generally "T" - shaped, which has a first rod body 328 perpendicular to the moving direction of the movable rod 324 and a second rod body 329 parallel to the moving direction of the movable rod 324. The second rod body 329 extends into the detection element 36 and forms a connection with the detection element 36. Thus, when the second rod body 329 moves along the first slide rail 326, it can drive the second rod body 329 to move synchronously. At this time, the detection element 36 can detect the displacement data of the second rod body 329 in real - time, so as to obtain the real - time data of the size change of the temperature deformation sensitive element 25.

[0041] As Figure 2 shown, the measuring unit 30 further includes a counterweight assembly 40 connected to the detection element 36. The counterweight assembly 40 includes a counterweight rod 42, a counterweight block 44 with a certain mass, and a fixed pulley 45. Specifically, a push rod 18 is disposed in the body 10 above the detection element 36, and the fixed pulley is connected to the push rod 18. The counterweight rod 42 is fixedly connected to the detection element 36 and is connected to the counterweight block 44 through the fixed pulley 45, whereby the detection element 36 and the counterweight block 44 are connected through the fixed pulley 45. The fixed pulley 45 can convert the vertically downward gravity of the counterweight block 44 into a vertically upward pulling force for lifting the detection element 36, pulling the detection element 36 to move upward, and thus pulling the displacement assembly 32 to move upward.

[0042] It is easily understood that when the temperature deformation sensitive element 25 to be detected passes through the displacement assembly 32, the counterweight assembly 40 can pull the displacement assembly 32 to move upward until the fixed rod 322 of the displacement assembly 32 contacts the temperature deformation sensitive element 25. Through this setting, it can be ensured that the fastener 327 on the fixed rod 322 is always in close contact with the temperature deformation sensitive element 25, thereby ensuring the accuracy of the detection result.

[0043] In a preferred embodiment, a second slide rail 182 is further disposed on the push rod 18, so that the fixed pulley 45 can move along the axial direction of the push rod 18 on the second slide rail 182 and drive the displacement assembly 32 to move along the axial direction of the push rod 18. Through this setting, the position of the displacement assembly 32 can be freely adjusted, so as to detect the dimensional change amount at any position of the temperature deformation sensitive element 25 according to actual needs.

[0044] In a preferred embodiment, the counterweight assembly 40 is provided in two groups, and the two groups of counterweight assemblies 36 are symmetrically arranged on both sides of the detection element 36. Through the two groups of counterweight assemblies 36, it can be ensured that the measuring unit 30 is always in a vertical state, preventing the measuring unit 30 from shaking or tilting and affecting the accuracy of the detection result.

[0045] As Figure 1 shown, in the present invention, one end of the first rod body 328 close to the detection element 36 extends outside the heating tank 20, so that the detection element 36 does not contact the heating medium 22, and there is a certain distance between the two. Through this setting, it can be prevented that the heating medium 22 with a higher temperature damages the detection element 36 when the temperature is high, thereby affecting the normal detection result.

[0046] Meanwhile, a heat insulation plate 365 is further provided between the heating medium 22 and the detection element 36. The heat insulation plate can further block the heat exchange between the heating medium 22 and the space where the detection element 36 is located, thereby further blocking the heat transfer and protecting the detection element 36.

[0047] As Figure 1 shown, in a preferred embodiment, at least one positioning member 50 is further provided in the heating tank 20 on the side of the temperature deformation sensitive element 25 away from the detection element 36. A positioning groove 55 is provided on the positioning member 50, and the positioning groove 55 is configured in a shape adapted to the temperature deformation sensitive element 25, so that the temperature deformation sensitive element 25 can be placed in the positioning groove 55. Through this setting, the position of the temperature deformation sensitive element 25 can be fixed during the detection process, preventing it from moving or shaking in the heating tank 20 and affecting the accuracy of the detection result.

[0048] In addition, a temperature measuring instrument (not shown) is further provided in the heating tank 20. The temperature measuring instrument can be, for example, a temperature sensor. Meanwhile, a data remote transmission system (not shown) is also connected to the temperature measuring instrument and the detection element 36. The data remote transmission system can remotely transmit the data of the detection element 36 and the temperature measuring instrument to a data processing terminal and control the temperature change of the heating medium 22 as needed.

[0049] The working process of the temperature deformation sensitive element deformation amount measuring device 100 according to the present invention is briefly described below.

[0050] When it is necessary to detect the dimensional change of the temperature deformation sensitive element 25, first place the temperature deformation sensitive element 25 on the positioning member 50 so that the temperature deformation sensitive element 25 passes through the displacement assembly 32. At this time, under the action of gravity, the movable rod 324 will be in contact with the upper end of the temperature deformation sensitive element 25, and the fixed rod 322 will be in contact with the lower end of the temperature deformation sensitive element 25 under the pulling of the counterweight assembly 40. When the temperature of the heating medium 22 changes due to the heating of the heating element, the dimensions of the temperature deformation sensitive element 25 will also change accordingly.

[0051] As the dimensions of the temperature deformation sensitive element 25 change, it will push the movable rod 324 to displace along the first slide rail 326. At this time, the detection element 36 can detect the displacement amount of the movable rod 324. Subsequently, the data remote transmission system can transmit the displacement amount of the movable rod 324 and the temperature change amount of the heating medium 22 to the data processing terminal.

[0052] In this process, the operator can also move the measurement unit 30 by moving the counterweight assembly 40 to measure different regions of the temperature deformation sensitive element 25.

[0053] Finally, it should be noted that the above are only the preferred embodiments of the present invention and do not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A measuring device (100) for the deformation amount of a temperature-deformation sensitive element, comprising: A main body (10), in which a heating tank (20) is provided. An inner cavity (21) for accommodating the temperature-deformation sensitive element is defined in the heating tank. A heating element and a heating medium (22) are provided in the inner cavity. Wherein, at least one measuring unit (30) is provided in the main body. The measuring unit includes a displacement assembly (32) connected to the temperature-deformation sensitive element (25) and a detection element (36) connected to the displacement assembly. The displacement assembly can convert the dimensional change data of the temperature-deformation sensitive element into displacement data that can be detected in real time by the detection element. The displacement assembly includes a fixed rod (322) and a movable rod (324) connected together by a first connecting rod (325). A gap (323) is formed between the fixed rod and the movable rod. The temperature-deformation sensitive element extends through the gap. A first slide rail (326) is provided on the first connecting rod. The movable rod can move freely along the direction of the dimensional change of the temperature-deformation sensitive element, so that the temperature-deformation sensitive element is always in contact with both the fixed rod and the movable rod at the same time. The movable rod is configured to be generally "T"-shaped, and it has a first rod body (328) perpendicular to the moving direction of the movable rod and a second rod body (329) parallel to the moving direction of the movable rod. The detection element is connected to the first rod body. Fasteners (327) are further provided on one side of the fixed rod and the movable rod close to the temperature-deformation sensitive element respectively. One end of the first rod body close to the detection element extends to the outside of the heating tank. A counterweight assembly (40) is further connected to the detection element. The counterweight assembly includes a counterweight rod (42), a counterweight block (44), and a fixed pulley (45) for connecting the counterweight rod and the counterweight block. A push rod (18) is provided in the cavity above the heating tank. The fixed pulley is connected to the push rod.

2. The measuring device (100) for the deformation amount of a temperature-deformation sensitive element according to claim 1, characterized in that, A heat insulation plate (365) is further provided between the detection element and the heating medium.

3. The measuring device (100) for the deformation amount of a temperature-deformation sensitive element according to claim 1, characterized in that, The counterweight assembly is provided in two groups, and the two groups of counterweight assemblies are symmetrically arranged on both sides of the detection element.

4. The measuring device for the deformation amount of a temperature-deformation sensitive element according to claim 3, characterized in that, A second slide rail (182) is provided on the push rod, so that the measuring unit can slide along the push rod.

5. The measuring device for the deformation amount of a temperature-deformation sensitive element according to claim 1, characterized in that, At least one positioning member (50) is further provided in the heating tank. A positioning groove (55) for the temperature-deformation sensitive element is provided on the positioning member.

6. The measuring device for the deformation amount of a temperature-deformation sensitive element according to claim 1, characterized in that, A temperature measuring instrument is also provided in the inner cavity, and a data remote transmission system is also connected to the temperature measuring instrument and the monitoring element.

7. The temperature deformation sensitive element deformation amount measuring device according to claim 6, characterized in that the heating medium is clear water or acid solution, the detection element is a displacement sensor, and the temperature measuring instrument is a temperature sensor.

8. A method for detecting the deformation amount of a temperature deformation sensitive element, which is carried out using the measuring device according to any one of claims 1 to 7, and the method comprises: Step 1, place the temperature deformation sensitive element in the inner cavity so that the temperature deformation sensitive element passes through the gap in the displacement assembly and the movable rod is in contact with the upper end of the temperature deformation sensitive element; Step 2, install the counterweight so that the counterweight assembly pulls the displacement assembly to move vertically upward until the fixed rod is in contact with the lower end of the temperature deformation sensitive element; Step 3, heat the heating medium in the heating tank so that the temperature deformation sensitive element deforms and pushes the movable rod to move; Step 4, respectively record the displacement data of the movement of the movable rod and the temperature change data of the heating medium through the detection element and the temperature measuring instrument; Step 5, remotely transmit and analyze the data recorded in Step 4 through the data remote transmission system.

Images