A cooling device for a flume liquid level detection sensor

Abstract

The utility model discloses a kind of cooling device for flume liquid level detection sensor, belong to liquid level detection device field.The cooling device for flume liquid level detection sensor, including protective shell, support frame and be set on the refrigeration component of support frame, protective shell inside is hollow structure for installing liquid level detection sensor, first cooling plate is fixed on protective shell inner wall, second cooling plate is symmetrically arranged in protective shell inside with first cooling plate, adjusting component for adjusting the distance between second cooling plate and first cooling plate is equipped on protective shell;The side of first cooling plate and second cooling plate opposite direction is all fixed with heat conduction plate, and liquid level detection sensor is located between two heat conduction plates.The utility model is actively cooled efficiently and uniformly to liquid level detection sensor, and overall cooling efficiency is improved, and stable temperature environment helps to guarantee the measurement accuracy and long-term operation reliability of liquid level detection sensor.

Description

Technical Field

[0001] This utility model relates to the field of liquid level detection devices, and in particular to a cooling device for a flow channel liquid level detection sensor. Background Technology

[0002] In continuous casting and melt conveying processes, runners are typically used to guide the high-temperature melt. To precisely control the production process, level sensors (such as laser rangefinders and ultrasonic sensors) need to be installed on the runners to monitor the melt level in real time. However, these sensors may be affected by the high-temperature environment, leading to performance degradation or even malfunction.

[0003] Chinese patent discloses an aluminum melt flow tank level detection device, application number 202323057824.6. The patent mainly uses a float, a guide tube, a patch, and a laser rangefinder. The float is located inside the main body of the melt flow tank. As the aluminum melt flows, the float generates buoyancy and moves upward, causing the patch to move upward. The laser rangefinder emits a laser beam, which is reflected by the patch to measure the liquid level. The laser rangefinder detects the liquid level by detecting the floating height of the patch, avoiding the influence of floating objects on the surface of the aluminum melt, and making the detection more accurate. At the same time, heat insulation cotton is pasted on the top surface of the top plate to reduce the direct heat radiation of the aluminum melt to the laser rangefinder, thereby eliminating the trouble of installing a cooling structure for the laser rangefinder, reducing maintenance frequency, and improving the convenience of use.

[0004] However, the temperature of the flow channel and its surrounding environment is extremely high, with strong thermal radiation and heat flow. Simply installing a basic heat insulation structure between the laser rangefinder and the flow channel is insufficient to effectively cool and protect the laser rangefinder in such a high-temperature environment, and the temperature of the liquid level sensor may still rise. If the sensor temperature is too high, it will affect its reliable operation in the high-temperature flow channel environment, potentially leading to liquid level detection failure. Utility Model Content

[0005] This invention provides a cooling device for a flow channel liquid level detection sensor, which can solve the problem that the simple heat insulation cotton structure of the existing flow channel liquid level detection sensor cooling device is difficult to provide good cooling and protection for the laser rangefinder in high temperature environment, thus affecting its reliable operation in high temperature flow channel environment.

[0006] A cooling device for a liquid level detection sensor in a flow channel includes a protective shell, a support frame, and a cooling component mounted on the support frame. The protective shell has a hollow interior for mounting the liquid level detection sensor. A first cooling plate is fixed on the inner wall of the protective shell. A second cooling plate is symmetrically arranged inside the protective shell and the protective shell is equipped with an adjustment component for adjusting the distance between the second cooling plate and the first cooling plate. A heat-conducting plate is fixedly provided on the opposite side of the first cooling plate and the second cooling plate. The liquid level detection sensor is located between the two heat-conducting plates. The first cooling plate and the second cooling plate are both hollow structures and both have cooling medium flowing through them. An inlet pipe is fixedly provided on the first cooling plate and a discharge pipe is connected to the second cooling plate. A connecting pipe assembly is provided between the first cooling plate and the second cooling plate. The inlet pipe is connected to the refrigeration assembly.

[0007] Preferably, a cover plate is detachably installed on the top of the protective shell, and a transparent plate is fixedly provided on the bottom of the protective shell.

[0008] Preferably, the adjustment assembly includes a plurality of screws threaded onto the protective housing, one end of which can contact the outer side of the second cooling plate.

[0009] Preferably, a heat-conducting pad is fixed on the side of both heat-conducting plates near the liquid level detection sensor.

[0010] Preferably, multiple heat-conducting sheets are fixed on the side of each of the two heat-conducting plates opposite to the heat-conducting pad.

[0011] Preferably, the connecting pipeline assembly includes a delivery pipe fixed to a first cooling plate and a first connecting hose, the two ends of which are respectively connected to the delivery pipe and the second cooling plate.

[0012] Preferably, both the discharge pipe and the inlet pipe are inserted inside the protective shell, and a second connecting hose is fixed at one end of the discharge pipe near the second cooling plate, and the second connecting hose is connected to the second cooling plate.

[0013] Preferably, the refrigeration assembly includes a refrigerator fixed on a support frame, the inlet pipe is connected to the refrigerator, the refrigerator is a vortex tube cooler, and the vortex tube cooler is connected to an external air compressor.

[0014] Preferably, guide rods are symmetrically fixed on the inner wall of the protective shell and on the side near the second cooling plate, and the second cooling plate is slidably connected to the guide rods.

[0015] Preferably, the cover plate is provided with a wire hole, and a conical ring is fixed on the cover plate and located at the top of the wire hole, and the conical ring is provided with a through hole.

[0016] This utility model provides a cooling device for a flow channel liquid level detection sensor, which has the following beneficial effects: 1. The heat from the sensor is first transferred to the flexible thermal pad, then conducted to the thermal plate, and finally carried away by the cool air introduced into the first and second cooling plates. Simultaneously, the protective shell made of ceramic fiber board effectively blocks high-temperature radiation from the external environment, achieving efficient and uniform active cooling of the liquid level sensor. This improves overall cooling efficiency, and the stable temperature environment helps ensure the measurement accuracy and long-term operational reliability of the liquid level sensor.

[0017] 2. The liquid level sensor is placed between two cooling plates. The position of the second cooling plate is adjusted by rotating a screw. The movement of the second cooling plate, in conjunction with the cooperation of the first cooling plate, clamps and positions the liquid level sensor, ensuring its stability. Furthermore, the movable nature of the second cooling plate facilitates adjustment of the clamping area, better accommodating liquid level sensors of different specifications and improving operational flexibility. Attached Figure Description

[0018] Figure 1 A schematic diagram of the cooling device for a flow channel liquid level detection sensor provided by this utility model. Figure 1 ; Figure 2 A schematic diagram of the cooling device for a flow channel liquid level detection sensor provided by this utility model. Figure 2 ; Figure 3 A schematic diagram of the internal structure of the protective shell of a cooling device for a flow channel liquid level detection sensor provided by this utility model; Figure 4 A cross-sectional view of the protective shell of a cooling device for a flow channel liquid level detection sensor provided by this utility model; Figure 5 A schematic diagram of the first and second cooling plates of a cooling device for a flow channel liquid level detection sensor provided by this utility model; Figure 6 This utility model provides a cooling device for a flow channel liquid level detection sensor. Figure 5 Another view of the structural diagram.

[0019] Explanation of reference numerals in the attached figures: 1. Protective shell; 2. First cooling plate; 3. Second cooling plate; 4. Heat-conducting plate; 5. Heat-conducting pad; 6. Screw; 7. Inlet pipe; 8. Delivery pipe; 9. First connecting hose; 10. Discharge pipe; 11. Second connecting hose; 12. Guide rod; 13. Cover plate; 14. Wiring hole; 15. Conical ring; 16. Heat-conducting plate; 17. Support frame; 18. Transparent plate; 19. Refrigerator. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0021] like Figures 1 to 6 As shown in the figure, a cooling device for a liquid level detection sensor in a flow channel provided by this utility model includes a protective shell 1, a support frame 17, and a refrigeration component mounted on the support frame 17. The protective shell 1 has a hollow internal structure for mounting the liquid level detection sensor and is made of ceramic fiber board to effectively isolate high-temperature radiation. A first cooling plate 2 is fixed on the inner wall of the protective shell 1, and a second cooling plate 3 is symmetrically arranged with the first cooling plate 2 inside the protective shell 1. An adjustment component is provided on the protective shell 1 for adjusting the distance between the second cooling plate 3 and the first cooling plate 2. A heat-conducting plate 4 is fixed on the opposite side of the first cooling plate 2 and the second cooling plate 3. The liquid level detection sensor is located between the two heat-conducting plates 4. Both the first cooling plate 2 and the second cooling plate 3 have hollow internal structures and are circulated with cooling medium. An inlet pipe 7 is fixed on the first cooling plate 2, and a discharge pipe 10 is connected to the second cooling plate 3. A connecting pipe assembly is provided between the first cooling plate 2 and the second cooling plate 3, and the inlet pipe 7 is connected to the refrigeration component.

[0022] The liquid level detection sensor involved in this application is a laser level gauge, which emits a continuous or pulsed laser beam from a semiconductor laser. After being reflected by the liquid surface, the beam is captured by a receiver, and the distance is calculated by the time difference, enabling non-contact measurement. The outer shell, the first cooling plate 2, and the second cooling plate 3 of the laser level gauge are all made of metals with good thermal conductivity, such as alloys and copper alloys.

[0023] A first cooling plate 2 and a second cooling plate 3 are disposed inside the protective housing 1. The relative distance between the second cooling plate 3 and the first cooling plate 2 can be adjusted using an adjustment component on the protective housing 1 to accommodate liquid level sensors of different sizes and ensure stable clamping. A heat-conducting plate 4 is disposed on the first cooling plate 2 and the second cooling plate 3. When the liquid level sensor is clamped between the two heat-conducting plates 4, the heat-conducting plates 4 can efficiently transfer the heat generated during sensor operation and the heat conducted to the sensor from the environment. Cooling medium flows inside the first cooling plate 2 and the second cooling plate 3. The cold air medium generated in the cooling assembly enters the internal cavity of the first cooling plate 2 through the inlet pipe 7. The cold air flows through the first cooling plate 2, absorbing the heat transferred from the heat-conducting plate 4 in contact with it. Subsequently, the cold air flows into the internal cavity of the second cooling plate 3 through the connecting pipe assembly, continuing to absorb the heat transferred from the other heat-conducting plate 4. Finally, the heated cold air is discharged from the outlet pipe 10.

[0024] By adopting a dual-cooling plate structure driven by a cooling component and in conjunction with a heat-conducting plate 4 with high thermal conductivity, efficient and uniform active cooling of the liquid level detection sensor is achieved. The protective shell 1 made of ceramic fiber material effectively blocks external high-temperature radiation. At the same time, the adjustment component allows the device to flexibly adapt to different types of sensors and ensure good thermal contact. The overall cooling efficiency is improved, and the stable temperature environment helps to ensure the measurement accuracy and long-term operational reliability of the liquid level detection sensor.

[0025] In some specific implementation plans, such as Figure 3 and Figure 4 As shown, a cover plate 13 is detachably installed on the top of the protective housing 1. The cover plate 13 is preferably bolted to the protective housing 1, facilitating the disassembly and assembly of the liquid level detection sensor for easy replacement or maintenance. A transparent plate 18 is fixed to the bottom of the protective housing 1, supporting the liquid level detection sensor. The transparent plate 18 is preferably made of high-temperature resistant glass, and its use of a double-layer vacuum structure better blocks heat conduction. Simultaneously, to prevent the transparent plate 18 from affecting the detection of the laser level gauge, small holes are made in the transparent plate 18 to ensure the smooth passage of the laser level gauge's detection beam.

[0026] In some specific implementation plans, such as Figure 3 and Figure 4 As shown, the adjustment assembly includes multiple screws 6 threaded onto the protective housing 1, with one end of each screw 6 contacting the outer side of the second cooling plate 3.

[0027] The liquid level sensor is placed between two cooling plates, with the sensor typically installed 1.6-1.8 meters above the liquid surface in the flow tank. The position of the second cooling plate 3 is adjusted by rotating screw 6. The movement of the second cooling plate 3, in conjunction with the first cooling plate 2, clamps and positions the liquid level sensor, ensuring its stability. Furthermore, the movable nature of the second cooling plate 3 facilitates adjustment of the clamping area, better accommodating different sizes of liquid level sensors and improving operational flexibility.

[0028] In some specific implementation plans, such as Figure 4 As shown, thermal pads 5 are fixed on the side of each of the two heat-conducting plates 4 near the liquid level detection sensor. The flexible thermal pads 5 ensure a tight fit between the heat-conducting plates 4 and the housing of the liquid level detection sensor. Multiple thermally conductive sheets 16 are fixed on the side of each heat-conducting plate 4 opposite to the thermal pads 5. The array of thermally conductive sheets 16 can effectively increase the heat exchange area and ensure rapid heat conduction.

[0029] In some specific implementation plans, such as Figure 3 , Figure 5 and Figure 6As shown, the connecting pipeline assembly includes a delivery pipe 8 and a first connecting hose 9 fixed on the first cooling plate 2. The two ends of the first connecting hose 9 are respectively connected to the delivery pipe 8 and the second cooling plate 3. The discharge pipe 10 and the inlet pipe 7 are both inserted inside the protective shell 1. The end of the discharge pipe 10 near the second cooling plate 3 is fixed with a second connecting hose 11, which is connected to the second cooling plate 3.

[0030] To ensure the free movement of the second cooling plate 3, the connection between the first cooling plate 2 and the second cooling plate 3 is made through a flexible first connecting hose 9, and the connection between the second cooling plate 3 and the discharge pipe 10 is made through a flexible second connecting hose 11.

[0031] In some specific implementation plans, such as Figure 1 and Figure 2 As shown, the refrigeration assembly includes a refrigerator 19 fixed on a support frame 17, an inlet pipe 7 connected to the refrigerator 19, the refrigerator 19 being a vortex tube cooler, and the vortex tube cooler being connected to an external air compressor.

[0032] The vortex cooler, also known as a vortex tube, vortex cooling tube, vortex tube, cold air generator, cold air duct, etc., works by using industrial standard compressed air supplied by an external air compressor as a power source. During operation, compressed air at a certain pressure is introduced into the vortex tube through inlet pipe 7. Within the vortex tube's unique internal structure, a continuous low-temperature airflow is generated at one end of the outlet, which is delivered to the cooling plate to cool the internal space of the cooling plate, the heat-conducting plate 4, and the heat-conducting fins 16. It requires no chemical refrigerant or moving parts, has a simple structure, and is easy to maintain.

[0033] In some specific implementation plans, such as Figure 4 , Figure 5 and Figure 6 As shown, guide rods 12 are symmetrically fixed on the inner wall of the protective shell 1, near the side of the second cooling plate 3, and the second cooling plate 3 is slidably connected to the guide rods 12. When the second cooling plate 3 moves by rotating the screw 6, it slides smoothly on the guide rods 12.

[0034] In some specific implementation plans, such as Figure 3 As shown, the cover plate 13 has a wire hole 14, and a conical ring 15 is fixed on the cover plate 13 and at the top of the wire hole 14. The conical ring 15 is made of rubber and has a through hole. The connecting wire of the liquid level detection sensor is led out through the wire hole 14 and the through hole. The size of the through hole is smaller than the diameter of the connecting wire. When the connecting wire passes through the through hole, it can enhance the sealing of the wire hole 14, thereby reducing the entry of external heat.

[0035] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios: The liquid level sensor is placed between two cooling plates. By turning multiple screws 6, the second cooling plate 3 is pushed to slide smoothly on the guide rod 12. Together with the first cooling plate 2, the sensor is clamped between two thermal pads 5, ensuring the stability of the sensor.

[0036] Compressed air at a certain pressure is introduced into the vortex tube through inlet pipe 7. Within the special internal structure of the vortex tube, a continuous flow of low-temperature cold air is generated at one end of the outlet. The cold air enters the internal cavity of the first cooling plate 2 through inlet pipe 7, flows through the first cooling plate 2, and absorbs the heat transferred through the first heat-conducting plate 4 and heat-conducting pad 5. Subsequently, the cold air flows into the interior of the second cooling plate 3 through the first connecting hose 9, continuing to absorb the transferred heat. The heated cold air then flows through the second connecting hose 11 into the outlet pipe 10 and is discharged.

[0037] The heat from the sensor is first transferred to the flexible thermal pad 5, then conducted to the thermal plate 4, and finally carried away by the cold air introduced into the first cooling plate 2 and the second cooling plate 3. At the same time, the protective shell 1 made of ceramic fiber board can effectively block the high temperature radiation from the external environment, while the transparent plate 18 at the bottom can effectively reduce heat conduction while ensuring the penetration of the laser beam.

[0038] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A cooling device for a flow channel liquid level detection sensor, comprising a protective shell (1), a support frame (17), and a cooling assembly disposed on the support frame (17), characterized in that, The protective shell (1) has a hollow structure inside for installing a liquid level detection sensor. A first cooling plate (2) is fixed on the inner wall of the protective shell (1). A second cooling plate (3) is symmetrically arranged inside the protective shell (1) with the first cooling plate (2). An adjustment component is provided on the protective shell (1) for adjusting the distance between the second cooling plate (3) and the first cooling plate (2). A heat-conducting plate (4) is fixed on one side of the first cooling plate (2) and the second cooling plate (3) facing each other. The liquid level detection sensor is located between the two heat-conducting plates (4). The first cooling plate (2) and the second cooling plate (3) are both hollow structures and both have cooling medium flowing through them. An inlet pipe (7) is fixed on the first cooling plate (2), and a discharge pipe (10) is connected to the second cooling plate (3). A connecting pipe assembly is provided between the first cooling plate (2) and the second cooling plate (3). The inlet pipe (7) is connected to the refrigeration assembly.

2. The cooling device for a flow channel liquid level detection sensor as described in claim 1, characterized in that, The protective shell (1) is detachably fitted with a cover plate (13) on the top and a transparent plate (18) is fixedly fitted at the bottom of the protective shell (1).

3. The cooling device for a flow channel liquid level detection sensor as described in claim 2, characterized in that, The adjustment assembly includes a plurality of screws (6) threaded onto the protective housing (1), one end of which can contact the outside of the second cooling plate (3).

4. The cooling device for a flow channel liquid level detection sensor as described in claim 3, characterized in that, Both of the heat-conducting plates (4) are fixed with heat-conducting pads (5) on the side near the liquid level detection sensor.

5. The cooling device for a flow channel liquid level detection sensor as described in claim 4, characterized in that, Multiple heat-conducting sheets (16) are fixed on the side of each of the two heat-conducting plates (4) opposite to the heat-conducting pad (5).

6. The cooling device for a flow channel liquid level detection sensor as described in claim 1, characterized in that, The connecting pipeline assembly includes a delivery pipe (8) fixed on the first cooling plate (2) and a first connecting hose (9), with the two ends of the first connecting hose (9) connected to the delivery pipe (8) and the second cooling plate (3), respectively.

7. The cooling device for a flow channel liquid level detection sensor as described in claim 6, characterized in that, The discharge pipe (10) and the inlet pipe (7) are both inserted inside the protective shell (1). The end of the discharge pipe (10) near the second cooling plate (3) is fixed with a second connecting hose (11), which is connected to the second cooling plate (3).

8. The cooling device for a flow channel liquid level detection sensor as described in claim 1, characterized in that, The refrigeration assembly includes a refrigerator (19) fixed on a support frame (17), the inlet pipe (7) is connected to the refrigerator (19), the refrigerator (19) is a vortex tube cooler, and the vortex tube cooler is connected to an external air compressor.

9. The cooling device for a flow channel liquid level detection sensor as described in claim 8, characterized in that, Guide rods (12) are symmetrically fixed on the inner wall of the protective shell (1) and on the side near the second cooling plate (3), and the second cooling plate (3) is slidably connected to the guide rods (12).

10. The cooling device for a flow channel liquid level detection sensor as described in claim 2, characterized in that, The cover plate (13) is provided with a wire hole (14), and a conical ring (15) is fixed on the cover plate (13) and located at the top of the wire hole (14). The conical ring (15) is provided with a through hole.

Images