Non-contact molten metal temperature measuring device and method

Abstract

The present invention discloses a non-contact molten metal liquid temperature measuring device and method, comprising: a support frame, a rangefinder is fixedly installed on the upper end of the support frame; the support frame is slidably connected to a shell, and a temperature detector is installed in the shell; a lifter is used to drive the shell to slide up and down along the support frame; the partition is connected to a driving member, and the driving member is used to drive the partition to move in two states, which are an open state of the lower port of the shell and a closed state of the lower port of the shell. When temperature detection is required, the driving member is used to drive the partition to be in an open state, so that the lower port of the shell is opened; when the temperature detection is completed, the driving member is used to drive the partition to be in a closed state, so that the lower port of the shell is closed, which can effectively reduce the high-temperature damage of the temperature detector to the thermal radiation of the metal solution and extend the service life of the temperature detector.

Description

Technical Field

[0001] The invention belongs to the technical field of metal processing, and in particular relates to a non-contact molten metal liquid temperature measuring device and method. Background Art

[0002] At present, in the field of measurement, "temperature" is the most commonly used physical parameter after "time". For almost all industrial production stages, following the given temperature value is an important factor to ensure its processing and product quality. Non-contact thermometer is a commonly used device for temperature measurement. In addition, it is also suitable for the temperature measurement of molten metal. To achieve proper monitoring and control of processing temperature;

[0003] The molten liquid thermometer is a special temperature measuring instrument developed for the smelting, casting and other industries to quickly measure the temperature of molten metal during the smelting process. With different thermocouples, it can perform rapid and precise temperature measurement in a variety of smelting occasions such as molten steel, molten iron, molten copper, molten aluminum, and molten zinc;

[0004] The above-mentioned existing technical solutions have the following defects: the high-temperature radiation generated by the high-temperature metal solution in the furnace will shorten the service life of the temperature measuring instrument, and the temperature detection result of the non-contact thermometer is affected by the distance between the heat source and the detector. Since the existing non-contact thermometer is installed in a fixed position and the liquid level of the high-temperature metal solution in the furnace changes, the monitored temperature will not be accurate enough. Summary of the invention

[0005] The present invention aims at the problem that the temperature monitored is not accurate enough due to the change of the liquid level of the high-temperature metal solution in the melting furnace in the prior art, and proposes the following technical solution:

[0006] In one aspect, the present application provides a non-contact molten metal temperature measuring device, comprising:

[0007] A support frame, a rangefinder is fixedly mounted on the upper end of the support frame;

[0008] The support frame is slidably connected to a shell, and a temperature detector is installed in the shell;

[0009] A lifter for driving the housing to slide up and down along the support frame;

[0010] A partition plate is arranged at the bottom of the temperature detector, the partition plate is connected to a driving member, and the driving member is used to drive the partition plate to move in two states, the two states being an open state of the lower port of the shell and a closed state of the lower port of the shell;

[0011] The lower end of the support frame is fixed to the furnace by a connection structure such as bolts, and a distance meter fixedly installed on the upper end of the support frame is arranged directly above the solution in the furnace to measure the liquid level of the solution in real time;

[0012] The driving housing can be adjusted to slide up and down along the support frame by controlling the lifter. A temperature detector is installed in the housing. The height of the temperature detector can be adjusted by moving the housing. The height of the temperature detector is adjusted by the feedback information of the liquid level measured in real time by the rangefinder. The distance between the temperature detector and the liquid level of the metal solution is kept constant by cooperating with each other, thereby avoiding the influence of the distance on the temperature detection result.

[0013] The partition is arranged at the bottom of the temperature detector. When temperature detection is required, the driving member is used to drive the partition to an open state, so that the lower port of the shell is opened; when the temperature detection is completed, the driving member is used to drive the partition to a closed state, so that the lower port of the shell is closed, which can effectively reduce the high-temperature damage of the temperature detector to the thermal radiation of the metal solution and extend the service life of the temperature detector.

[0014] As a preferred embodiment of the above technical solution, the lifter includes a screw rotatably connected to the support frame; a threaded sleeve threadedly connected to the surface of the screw, and the threaded sleeve is fixedly connected to the housing; a motor fixed to the upper end of the support frame, and the drive shaft of the motor is driven by the end of the screw through gear meshing;

[0015] Since the working environment is under high temperature conditions, in order to ensure the stable operation of the equipment, the motor is installed at the upper end away from the heat source, and the screw is rotated to drive the threaded sleeve to move up and down for lifting conditions, which is easy to operate.

[0016] As a preferred embodiment of the above technical solution, a support seat is fixed at the lower end of the support frame, a mounting plate is fixed at the upper end of the support frame, an adjustment frame is fixed to the mounting plate by bolts, and the rangefinder is fixed to the bottom of the mounting plate by the adjustment frame;

[0017] The rangefinder is installed on the upper end of the support frame through an adjustment frame and can be adjusted for use through the adjustment frame.

[0018] As a preferred embodiment of the above technical solution, a sliding sleeve is slidably engaged on the surface of the support frame, the sliding sleeve is fixedly connected to the shell, the threaded sleeve is fixed on the surface of the sliding sleeve, an insulation layer is applied on the surface of the shell, the partition is an insulation board, and the sliding sleeve is provided to reduce friction while improving the stability of lifting and lowering.

[0019] As a preferred embodiment of the above technical solution, the driving member includes a lever, which is arranged on the surface of the shell; a damping block rotatably connected to the first end of the lever, a damping groove is provided on the side wall of the support frame, and the damping block is inserted into the damping groove; a connecting rod rotatably connected to the second end of the lever, one end of the connecting rod is hinged to the partition, and one side of the partition is rotatably connected to the inner wall of the shell;

[0020] Since the working environment is under high temperature conditions, the driving component installed at the lower end is close to the heat source. In order to avoid the impact of high temperature on the equipment, the driving component adopts a connecting rod mechanism for mechanical drive, ensuring the stable operation of the equipment.

[0021] As a preferred embodiment of the above technical solution, a support rod is fixed to the surface of the shell, the lever is rotatably connected to the support rod, and the lever rotates around the support rod as a fulcrum; a limiting groove is provided on the side wall of the sliding sleeve, and the damping block is slidably engaged in the limiting groove.

[0022] As a preferred embodiment of the above technical solution, a strip groove is provided on the side wall of the shell, a rotating shaft is fixed to one end of the lever, the rotating shaft rotates through the strip groove, and the rotating shaft is rotatably connected to one end of the connecting rod.

[0023] As a preferred embodiment of the above technical solution, a waist-shaped groove is provided on the surface of the lever, a push rod is fixed to the damping block, one end of the push rod is movably engaged in the waist-shaped groove, and one end of the support rod is engaged in the waist-shaped groove.

[0024] As a preferred embodiment of the above technical solution, a rotating rod is fixed on one side of the partition, the end of the rotating rod is rotatably connected to the inner wall of the shell, two partitions are symmetrically arranged, and a protective barrier is provided at the lower port of the shell, and the protective barrier is a protective net or light-transmitting glass.

[0025] In a second aspect, the present application further provides a non-contact molten metal temperature measurement method, comprising any one of the non-contact molten metal temperature measurement devices described above;

[0026] And the following steps:

[0027] S1: receiving the real-time solution level detected by the rangefinder;

[0028] S2: According to the real-time solution level detected by the rangefinder, the lifter is controlled to adjust the driving housing to slide up and down along the support frame;

[0029] S3: When the shell slides up and down along the support frame, the partition is driven by the driving member to move to an open state and a closed state.

[0030] The beneficial effects of the present invention are:

[0031] (1) The driving housing can be adjusted to slide up and down along the support frame by controlling the lifter. A temperature detector is installed in the housing. The height of the temperature detector can be adjusted by moving the housing. The height of the temperature detector is adjusted by the feedback information of the liquid level measured in real time by the rangefinder. The distance between the temperature detector and the metal solution surface is kept constant by cooperating with each other, thereby avoiding the influence of the distance on the temperature detection result;

[0032] (2) A partition is arranged at the bottom of the temperature detector. When temperature detection is required, the driving member is used to drive the partition to an open state, so that the lower port of the shell is opened; when the temperature detection is completed, the driving member is used to drive the partition to a closed state, so that the lower port of the shell is closed, which can effectively reduce the high temperature damage to the temperature detector caused by the heat radiation of the metal solution and extend the service life of the temperature detector;

[0033] (3) When the sliding sleeve is driven downward by the lifter, it drives the rangefinder downward, so that the temperature can be detected close to the liquid surface of the solution. At the same time, it pulls the damping block to slide in the damping groove. Due to the friction of the damping block against the inner wall of the damping groove, the position of the damping block relative to the support rod moves upward, thereby driving the lever to rotate around the support rod, driving the rotating shaft at the end of the lever to move downward, so that the connecting rod pushes the closed partition to rotate and open, so that the temperature detector can detect the temperature of the solution below; when the detection is completed, the sliding sleeve is driven upward by the lifter. During the upward movement, the partition can be closed through the above-mentioned linkage mechanism, so as to isolate the temperature detector from the solution and reduce the high temperature damage caused by direct temperature radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 What is shown is a schematic diagram of the three-dimensional structure of a non-contact molten metal temperature measuring device;

[0035] Figure 2 What is shown is a side view of the structure of the middle support frame;

[0036] Figure 3 Shown is an exploded view of a non-contact molten metal temperature measuring device;

[0037] Figure 4 What is shown is a schematic diagram of the three-dimensional structure of the bottom of the middle shell;

[0038] Figure 5 What is shown is a three-dimensional structural schematic diagram of the middle partition;

[0039] Figure 6 What is shown is a three-dimensional structural schematic diagram of the middle sliding sleeve;

[0040] Figure 7 What is shown is a schematic diagram of the three-dimensional structure of the middle damping block;

[0041] Figure 8 Shown is a schematic diagram of the three-dimensional structure of the middle lever.

[0042] Reference numerals:

[0043] 100. Support frame; 101. Support seat; 103. Mounting plate; 105. Adjustment frame; 107. Damping groove; 110. Distance meter; 120. Sliding sleeve; 121. Limiting groove; 130. Shell; 131. Temperature detector; 133. Support rod; 135. Strip groove; 137. Protective barrier; 140. Lever; 141. Rotating shaft; 143. Waist groove; 150. Partition; 151. Connecting rod; 153. Rotating rod; 160. Damping block; 161. Push rod; 171. Screw; 173. Threaded sleeve; 175. Motor. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments;

[0045] When implementing the technology of this solution, it is important to understand that the infrared temperature measuring device measures the temperature of the object being measured by absorbing the infrared radiation emitted by it - without having to contact the object;

[0046] When transmitting the measurement results to the control system, standardized output forms of linear 0 / 4-20mA, 0-10V and thermocouple signals are used. In addition, most infrared thermometers currently used provide digital interfaces (USB, RS232, RS485) to achieve further digital signal processing;

[0047] Any object with a temperature higher than absolute zero (0K or -273.15℃) will emit electromagnetic radiation from the surface, and the radiation is proportional to the intrinsic temperature of the object. The infrared radiation array only contains a limited part of the entire electromagnetic radiation array, from the visible light range of about 0.78μm to the wavelength of about 1000μm. 0.7μm to 14μm is an important wavelength range for infrared temperature measurement. When the wavelength exceeds this range, the infrared energy is too low, so that the sensitivity of the detector is not enough to detect them;

[0048] After this radiation has passed through the atmosphere, it is focused on a detector with the help of a special lens. The detector then generates an electrical signal proportional to the radiation. This signal is amplified and converted into an output signal proportional to the object's temperature by continuous digital signal processing. This results in the temperature measurement being shown on a display or output as a signal.

[0049] Example

[0050] Figures 1 to 8 The present invention is shown as a specific embodiment

[0051] In one aspect, the present application provides a non-contact molten metal temperature measuring device, comprising:

[0052] The support frame 100 has a rangefinder 110 fixedly mounted on the upper end of the support frame 100; preferably, the rangefinder is a laser rangefinder.

[0053] The support frame 100 is slidably connected to the shell 130, and a temperature detector 131 is installed in the shell 130; the temperature detector 131 includes any device that can achieve non-contact temperature measurement, and in this solution, it is preferably a sensor probe, an infrared thermometer, an infrared thermal imager, an infrared scanning thermometer, and a combination of one or more of a micro infrared temperature sensor. A lifter for driving the shell 130 to slide up and down along the support frame 100; a partition 150 is arranged at the bottom of the temperature detector 311, and the partition 150 is connected to a driving member, and the driving member is used to drive the partition 150 to move in two states, which are an open state of the lower port of the shell 130 and a closed state of the lower port of the shell 130;

[0054] The lower end of the support frame 100 is fixed to the furnace by a connection structure such as bolts, and the rangefinder 110 fixedly installed at the upper end of the support frame 100 is arranged directly above the solution in the furnace for real-time measurement of the liquid level of the solution;

[0055] Figure 1 In the embodiment, the driving housing 130 can be adjusted to slide up and down along the support frame 100 by controlling the lifter. A temperature detector 131 is installed in the housing 130. The height of the temperature detector 131 can be adjusted by moving the housing 130. The height of the temperature detector 131 is adjusted by the feedback information of the liquid level measured in real time by the rangefinder 110. The distance between the temperature detector 131 and the liquid surface of the metal solution is kept constant by cooperating with each other, thereby avoiding the influence of the distance on the temperature detection result.

[0056] The partition 150 is arranged at the bottom of the temperature detector 311. When temperature detection is required, the driving member is used to drive the partition 150 to be in an open state, so that the lower port of the shell 130 is opened; when the temperature detection is completed, the driving member is used to drive the partition 150 to be in a closed state, so that the lower port of the shell 130 is closed, which can effectively reduce the high-temperature damage of the thermal radiation of the metal solution to the temperature detector 131 and extend the service life of the temperature detector 131.

[0057] Figure 3 As shown in a specific embodiment of the present invention, the lifter includes a screw 171 rotatably connected to the support frame 100; a threaded sleeve 173 threadedly connected to the surface of the screw 171, and the threaded sleeve 173 is fixedly connected to the housing 130; a motor 175 fixed to the upper end of the support frame 100, and the drive shaft of the motor 175 is driven by the end of the screw 171 through gear meshing;

[0058] Since the working environment is under high temperature conditions, in order to ensure the stable operation of the equipment, the motor 175 is installed at the upper end away from the heat source, and the screw 171 is rotated to drive the threaded sleeve 173 to move up and down for lifting and lowering conditions, which is easy to operate and use.

[0059] As a specific embodiment of the present invention Figure 2 In the figure, a support base 101 is fixed to the lower end of the support frame 100, a mounting plate 103 is fixed to the upper end of the support frame 100, an adjustment frame 105 is fixed to the mounting plate 103 by bolts, and a rangefinder 110 is fixed to the bottom of the mounting plate 103 by the adjustment frame 105;

[0060] The rangefinder 110 is installed on the upper end of the support frame 100 through the adjustment frame 105 and can be adjusted for use through the adjustment frame.

[0061] As a specific embodiment of the present invention, the surface of the support frame 100 is slidably clamped with a sliding sleeve 120, the sliding sleeve 120 is fixedly connected to the shell 130, the threaded sleeve 173 is fixed on the surface of the sliding sleeve 120, the surface of the shell 130 is provided with a heat insulation layer, the partition 150 is a heat insulation board, and the setting of the sliding sleeve 120 reduces friction while improving the stability of lifting.

[0062] Figures 5 to 8 As shown in the figure, as a specific embodiment of the present invention, the driving member includes a lever 140, which is arranged on the surface of the housing 130; a damping block 160 rotatably connected to the first end of the lever 140, a damping groove 107 is provided on the side wall of the support frame 100, and the damping block 160 is inserted into the damping groove 107; a connecting rod 151 rotatably connected to the second end of the lever 140, one end of the connecting rod 151 is hinged to the partition 150, and one side of the partition 150 is rotatably connected to the inner wall of the housing 130;

[0063] Since the working environment is under high temperature conditions, the driving component installed at the lower end is close to the heat source. In order to avoid the impact of high temperature on the equipment, the driving component adopts a connecting rod mechanism for mechanical drive, ensuring the stable operation of the equipment.

[0064] Figures 3 to 8 As shown in a specific embodiment of the present invention, a support rod 133 is fixed on the surface of the shell 130, and the lever 140 is rotatably connected to the support rod 133, and the lever 140 rotates around the support rod 133 as a fulcrum; a limiting groove 121 is provided on the side wall of the sliding sleeve 120, and the damping block 160 is slidably engaged in the limiting groove 121.

[0065] Figure 3 As shown in a specific embodiment of the present invention, a strip groove 135 is opened on the side wall of the housing 130, a rotating shaft 141 is fixed to one end of the lever 140, the rotating shaft 141 rotates through the strip groove 135, and the rotating shaft 141 is rotatably connected to one end of the connecting rod 151.

[0066] Figure 3 , Figure 6 As shown in a specific embodiment of the present invention, a waist-shaped groove 143 is opened on the surface of the lever 140, a push rod 161 is fixed to the damping block 160, one end of the push rod 161 is movably engaged in the waist-shaped groove 143, and one end of the support rod 133 is engaged in the waist-shaped groove 143.

[0067] Figure 8 As shown in a specific embodiment of the present invention, a rotating rod 153 is fixed to one side of the partition 150, and the end of the rotating rod 153 is rotatably connected to the inner wall of the shell 130. Two partitions 150 are symmetrically arranged, and a protective barrier 137 is arranged at the lower end of the shell 130. The protective barrier 137 is a protective net or light-transmitting glass.

[0068] In a second aspect, the present application further provides a non-contact molten metal temperature measurement method, comprising any one of the non-contact molten metal temperature measurement devices described above;

[0069] And the following steps:

[0070] S1: receiving the real-time solution level detected by the rangefinder 110;

[0071] S2: According to the real-time solution level detected by the rangefinder 110, the lifter is controlled to adjust the drive housing 130 to slide up and down along the support frame 100;

[0072] S3: When the shell 130 slides up and down along the support frame 100, the partition 150 is driven by the driving member to move to an open state and a closed state.

[0073] Working principle: The partition 150 is arranged at the bottom of the temperature detector 311. When temperature detection is required, the driving member is used to drive the partition 150 to be in an open state, so that the lower port of the shell 130 is opened; when the temperature detection is completed, the driving member is used to drive the partition 150 to be in a closed state, so that the lower port of the shell 130 is closed, which can effectively reduce the high-temperature damage of the thermal radiation of the metal solution to the temperature detector 131 and extend the service life of the temperature detector 131; the driving shell 130 can be adjusted to slide up and down along the support frame 100 by controlling the lifter. The temperature detector 131 is installed in the shell 130. The height of the temperature detector 131 can be adjusted by moving the shell 130. The height of the temperature detector 131 is adjusted by the feedback information of the liquid level measured in real time by the rangefinder 110. The distance between the temperature detector 131 and the liquid surface of the metal solution is kept constant by cooperation with each other, avoiding the influence of the distance on the temperature detection result;

[0074] When the sliding sleeve 120 is driven downward by the lifter, it drives the rangefinder 110 downward, and can approach the solution surface for temperature detection, and at the same time pulls the damping block 160 to slide in the damping groove 1097. Since the damping block 160 is subjected to the friction force of the inner wall of the damping groove 1097, the position of the damping block relative to the support rod 133 moves upward, thereby driving the lever 140 to rotate around the support rod 133, driving the rotating shaft 141 at the end of the lever 140 to move downward, so that the connecting rod 151 pushes the closed partition 150 to rotate and open, so that the temperature detector 131 can detect the temperature of the solution below; when the detection is completed, the sliding sleeve 120 is driven upward by the lifter. During the upward movement, through the above-mentioned linkage mechanism, the partition 150 can be driven to close, so as to block the temperature detector 131 from the solution and reduce the high temperature damage caused by direct temperature radiation. The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A non-contact molten metal temperature measuring device, characterized in that: include: A support frame (100), wherein a rangefinder (110) is fixedly mounted on the upper end of the support frame (100); The support frame (100) is slidably connected to a housing (130), and a temperature detector (131) is installed in the housing (130); A lifter for driving the housing (130) to slide up and down along the support frame (100); A partition (150) is arranged at the bottom of the temperature detector (131), the partition (150) being connected to a driving member, the driving member being used to drive the partition (150) to move in two states, the two states being an open state of the lower port of the shell (130) and a closed state of the lower port of the shell (130); The lifter comprises A screw rod (171) rotatably connected to the support frame (100); a threaded sleeve (173) threadedly connected to the surface of the screw rod (171), the threaded sleeve (173) being fixedly connected to the housing (130); A motor (175) fixed to the upper end of the support frame (100), wherein a drive shaft of the motor (175) and an end of the screw rod (171) are meshed with each other through gears for transmission; A sliding sleeve (120) is slidably engaged on the surface of the support frame (100), the sliding sleeve (120) is fixedly connected to the shell (130), the threaded sleeve (173) is fixed on the surface of the sliding sleeve (120), a heat insulation layer is applied on the surface of the shell (130), and the partition (150) is a heat insulation board; The driving member includes A lever (140), wherein the lever (140) is arranged on a surface of the housing (130); A damping block (160) is rotatably connected to the first end of the lever (140), a damping groove (107) is provided on the side wall of the support frame (100), and the damping block (160) is inserted into the damping groove (107); A connecting rod (151) is rotatably connected to the second end of the lever (140), one end of the connecting rod (151) is hinged to the partition (150), and one side of the partition (150) is rotatably connected to the inner wall of the shell (130); A support rod (133) is fixed on the surface of the shell (130), the lever (140) is rotatably connected to the support rod (133), and the lever (140) rotates with the support rod (133) as a fulcrum; A limiting groove (121) is provided on the side wall of the sliding sleeve (120), and the damping block (160) is slidably engaged in the limiting groove (121); A strip groove (135) is formed on the side wall of the housing (130); a rotating shaft (141) is fixed to one end of the lever (140); the rotating shaft (141) rotates through the strip groove (135); and the rotating shaft (141) is rotatably connected to one end of the connecting rod (151).

2. The non-contact molten metal temperature measuring device according to claim 1, characterized in that: A support seat (101) is fixed to the lower end of the support frame (100), a mounting plate (103) is fixed to the upper end of the support frame (100), an adjustment frame (105) is fixed to the mounting plate (103) via bolts, and the rangefinder (110) is fixed to the bottom of the mounting plate (103) via the adjustment frame (105).

3. The non-contact molten metal temperature measuring device according to claim 1, characterized in that: A waist-shaped groove (143) is formed on the surface of the lever (140), a push rod (161) is fixed to the damping block (160), one end of the push rod (161) is movably engaged in the waist-shaped groove (143), and one end of the support rod (133) is engaged in the waist-shaped groove (143).

4. The non-contact molten metal temperature measuring device according to claim 1, characterized in that: A rotating rod (153) is fixed to one side of the partition (150), and an end of the rotating rod (153) is rotatably connected to the inner wall of the shell (130). Two partitions (150) are symmetrically arranged, and a protective barrier (137) is arranged at the lower end of the shell (130). The protective barrier (137) is a protective net or light-transmitting glass.

5. A non-contact molten metal temperature measurement method, characterized in that: Use in The non-contact molten metal temperature measuring device according to any one of claims 1 to 4; include Follow these steps: S1: receiving the real-time melt level detected by the rangefinder (110); S2: According to the real-time melt level detected by the distance meter (110), the lifter is controlled to adjust the driving housing (130) to slide up and down along the support frame (100); S3: During the process of the housing (130) sliding up and down along the support frame (100), the partition (150) is driven by the driving member to move to an open state and a closed state.

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