In-tank liquid level detection device

Abstract

The utility model discloses an in-tank liquid level detection device, which comprises a laser ranging assembly and an assembled protective cylinder arranged at the bottom of a separation cylinder, a filter screen cover is arranged at the bottom of the assembled protective cylinder, a reflector is arranged in the assembled protective cylinder, the assembled protective cylinder is formed by assembling a plurality of single protective cylinders, and the single protective cylinders are arranged in the filter screen cover. Light-transmitting interlayers are installed in the separation cylinder in a spaced mode, and an installation body is fixedly installed on the outer side of the separation cylinder. The beneficial effects are that rapid dismounting and convenient maintenance of the laser ranging assembly can be displayed through screwing, liquid level detection of different tank depths can be realized through assembling the protective cylinder, the reflector main body is a thin floating body, the immersion depth error of liquids with different densities is small, electronic devices are isolated through the light-transmitting interlayer, and the detection precision is high. And the protective film is not in contact with liquid and volatile gas, so that the protective performance is higher.

Description

Technical Field

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

[0002] In the chemical storage process, it is necessary to conduct multi-faceted testing on the stored raw materials to ensure the safety of the storage process. Some liquid chemical raw materials are corrosive and contain volatile gases. Usually, the liquid level detector is in this environment for a long time, and the internal electronic components are easily damaged. Moreover, maintenance requires complete disassembly, which is inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a liquid level detection device inside a tank in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A liquid level detection device for a tank includes a laser ranging assembly, an assembled protective cylinder installed at the bottom of a partition cylinder, a filter screen installed at the bottom of the assembled protective cylinder, a reflector placed inside the assembled protective cylinder, the assembled protective cylinder being assembled from several individual protective cylinders, a light-transmitting partition layer installed inside the partition cylinder, and an installation body fixedly installed on the outside of the partition cylinder.

[0006] Furthermore, the laser ranging assembly consists of a housing, a laser ranging main body installed inside the housing, and an inner rotating part installed at the bottom of the housing. The laser ranging assembly is screwed onto the separator cylinder through the inner rotating part of the housing.

[0007] Furthermore, the light-transmitting layer is a flat transparent layer.

[0008] Furthermore, the single protective cylinder is composed of a cylinder body, an inner spiral portion and an outer spiral portion respectively disposed at both ends of the cylinder body, and the inner spiral portion and the outer spiral portion of two adjacent single protective cylinders are screwed together.

[0009] Furthermore, the top of the filter screen cover is provided with a cover end screw-in part, and the filter screen cover is screwed onto the assembled protective cylinder through the cover end screw-in part.

[0010] Furthermore, the mounting body consists of a fixing ring and a ring pad disposed on the bottom annular surface of the fixing ring.

[0011] Furthermore, the reflector consists of a thin floating layer and a reflective layer disposed on the top surface of the thin floating layer.

[0012] Furthermore, the single protective cylinder is provided with several pressure regulating holes.

[0013] The beneficial effects are as follows: the liquid level detection device in the tank described in this utility model can be quickly disassembled by screwing on the display laser ranging assembly, which is convenient for maintenance. Liquid level detection at different tank depths can be achieved by assembling the protective cylinder. At the same time, the main body of the reflector is a thin floating body, which has a small error in immersion depth for liquids of different densities. The electronic components are isolated by the light-transmitting partition, so that they have no contact with the liquid and volatile gases, which provides higher protection performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the tank liquid level detection device described in this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the liquid level detection device in a tank according to the present invention.

[0016] The annotations in the attached figures are explained as follows:

[0017] 1. Laser rangefinder assembly; 11. Housing; 12. Laser rangefinder main body; 13. Inner rotating part of the bottom of the housing; 2. Separator cylinder; 3. Assembled protective cylinder; 4. Mounting body; 41. Fixing ring; 42. Ring gasket; 5. Filter screen cover; 6. Individual protective cylinder; 61. Cylinder body; 62. Inner rotating part of the cylinder; 63. Outer rotating part of the cylinder; 7. Light-transmitting partition; 8. Reflector; 81. Thin floating layer; 82. Reflective layer; 9. Pressure regulating hole. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] like Figures 1-2 As shown, a tank liquid level detection device consists of a partition cylinder 2, a laser ranging assembly 1 installed on the top of the partition cylinder 2, and an assembled protective cylinder 3 installed at the bottom of the partition cylinder 2.

[0020] A filter screen cover 5 is installed at the bottom of the assembled protective cylinder 3. A reflector 8 is placed inside the assembled protective cylinder 3. The reflector 8 is used to mark the liquid level height. The liquid level inside the tank is detected by measuring the distance through the laser rangefinder main body 12.

[0021] The assembled protective cylinder 3 is assembled from several individual protective cylinders 6. The inner cavity of the partition cylinder 2 is equipped with a light-transmitting partition 7 to facilitate the laser ranging assembly 1 to perform transmission ranging. The outer side of the partition cylinder 2 is fixedly installed with an mounting body 4 for installation onto the storage tank.

[0022] like Figures 1-2 As shown, this utility model also discloses the following more optimized specific structures:

[0023] The laser ranging assembly 1 consists of a housing 11, a laser ranging main body 12 installed inside the housing 11, and a housing inner rotating part 13 installed at the bottom of the housing 11. The laser ranging assembly 1 is screwed onto the separator cylinder 2 through the housing inner rotating part 13. A display structure is also installed on the housing 11 to facilitate the display of liquid level. A through hole is provided at the bottom of the housing to facilitate the passage of light.

[0024] The light-transmitting layer 7 is a flat transparent layer to avoid affecting the light.

[0025] The single protective cylinder 6 consists of a cylinder body 61, an inner rotating part 62 and an outer rotating part 63 respectively disposed at both ends of the cylinder body 61, and the inner rotating parts 62 and the outer rotating parts 63 of two adjacent single protective cylinders 6 are screwed together to achieve assembly.

[0026] The top of the filter screen cover 5 is provided with a cover end screw joint, and the filter screen cover 5 is screwed onto the assembled protective cylinder 3 through the cover end screw joint.

[0027] The mounting body 4 consists of a fixing ring 41 and a ring pad 42 located on the bottom ring surface of the fixing ring 41. The fixing ring 41 is fixed to the tank wall by bolts.

[0028] The reflector 8 consists of a thin floating layer 81 and a reflective layer 82 disposed on the top surface of the thin floating layer 81, and is used to reflect the laser beam.

[0029] The single protective cylinder 6 is provided with several pressure regulating holes 9.

[0030] like Figures 1-2 The liquid level detection device shown is mainly used in chemical storage tanks. The tank wall has mounting holes and is fixed to the tank wall by the mounting body 4. The laser ranging assembly 1 is set outside the tank. The internal liquid or volatile gas is isolated by the anti-corrosion light-transmitting layer 7 to achieve isolation of the detection element and avoid damage from long-term exposure to the chemical environment. The reflector 8 has a small thickness, and the immersion depth error of the floating body is small due to the different densities of different liquids. The liquid drives the reflector 8 to rise to the liquid level height, and the liquid level can be easily detected by distance detection.

[0031] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A liquid level detection device for a tank, characterized in that: The device includes a laser ranging assembly, an assembled protective cylinder installed at the bottom of a partition cylinder, a filter screen installed at the bottom of the assembled protective cylinder, a reflector placed inside the assembled protective cylinder, the assembled protective cylinder being assembled from several individual protective cylinders, a light-transmitting partition layer installed inside the partition cylinder, and an installation body fixedly installed on the outside of the partition cylinder.

2. The tank liquid level detection device according to claim 1, characterized in that: The laser ranging assembly consists of a housing, a laser ranging main body installed inside the housing, and an inner rotating part installed at the bottom of the housing. The laser ranging assembly is screwed onto the separator cylinder through the inner rotating part of the housing.

3. The tank liquid level detection device according to claim 1, characterized in that: The light-transparent layer is a flat transparent layer.

4. The tank liquid level detection device according to claim 1, characterized in that: The single protective cylinder is composed of a cylinder body, an inner spiral part and an outer spiral part respectively disposed at both ends of the cylinder body, and the inner spiral part and the outer spiral part of two adjacent single protective cylinders are screwed together.

5. The tank liquid level detection device according to claim 1, characterized in that: The top of the filter screen cover is provided with a cover end screw-in part, and the filter screen cover is screwed onto the assembled protective cylinder through the cover end screw-in part.

6. The tank liquid level detection device according to claim 1, characterized in that: The mounting body consists of a fixing ring and a ring gasket located on the bottom ring surface of the fixing ring.

7. The tank liquid level detection device according to claim 1, characterized in that: The reflector consists of a thin floating layer and a reflective layer disposed on the top surface of the thin floating layer.

8. The tank liquid level detection device according to claim 1, characterized in that: The single protective cylinder is provided with several pressure regulating holes.

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