CN211041476U - Prevent radar level sensor auxiliary device of condensation - Google Patents

Abstract

The utility model provides a prevent radar level sensor auxiliary device of condensation, radar level sensor stretches into in the water level pipe of perpendicular setting, the device is established including the cover the outside condensation device of preventing of water level pipe, prevent that the condensation device includes a plurality of thermoelectric pair and the constant temperature heating section, preheating section and the condensation segment that from the top down set gradually, radar level sensor's probe lower surface is located the inside of constant temperature heating section, and the constant temperature heating section includes the heating ring piece that a plurality of and water level pipe laminated mutually, and the preheating section includes the fin that a plurality of and water level pipe laminated mutually, and the condensation segment includes the condensation piece that a plurality of and water level pipe laminated mutually, and the cold junction setting of thermoelectric pair is in the condensation segment, and thermoelectric pair's hot junction sets up in the preheating section. The utility model provides a prevent radar level sensor auxiliary device of condensation, simple structure, noiselessness, long service life.

Description

Prevent radar level sensor auxiliary device of condensation

Technical Field

The utility model relates to a radar level sensor field, specific radar level sensor auxiliary device who prevents condensation that says so.

Background

The radar level sensor, also called level radar, is an electronic device for detecting targets by utilizing electromagnetic waves, and has the functions of water conservancy monitoring, flood control early warning and the like. The lower surface of the probe of the radar water level sensor emits a plurality of radar pulses which are received by the lower surface of the probe after being reflected by the water surface. The time interval between the sending and receiving of a plurality of pulses is recorded, and the calculation is carried out according to a built-in algorithm, so that the distance from the sensor to the water surface is obtained, and the current water level condition is determined.

The working environment of the radar water level sensor has high humidity and is in the conditions of no direct sunlight and no obvious air circulation for a long time. The following often occur during use: 1. after the probe works for a period of time (particularly after rain in summer and autumn), the lower surface of the probe can generate a condensation phenomenon, and the condensation area seriously influences the sending and receiving of electromagnetic wave pulses, so that the abnormity of measurement and output results is directly caused; 2. microorganisms are often bred in the shell of the radar water level sensor and the auxiliary fixing device, so that the phenomena of spider netting and animal cocoon formation are generated, and the structural stability of the body device and the fixing device is influenced; 3. the maintenance and repair personnel need to frequently wipe the surface of the probe and clean the part near the cleaning device, thereby reducing the maintenance period and increasing the workload of later maintenance. Therefore, it is urgent to design an auxiliary device of a radar level sensor capable of improving the current working environment.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, the utility model provides a prevent radar level sensor auxiliary device of condensation, simple structure, noiselessness, longe-lived.

In order to achieve the above object, the utility model discloses a concrete scheme does: the utility model provides a prevent radar level sensor auxiliary device of condensation, radar level sensor stretches into in the water level pipe of perpendicular setting, the device is established including the cover the outside condensation device of preventing of water level pipe, prevent that the condensation device includes a plurality of thermoelectric pair and the constant temperature heating section, preheating section and the condensation segment that from the top down set gradually, radar level sensor's probe lower surface is located the inside of constant temperature heating section, and the constant temperature heating section includes the heating ring piece that a plurality of and water level pipe laminated mutually, and the preheating section includes the fin that a plurality of and water level pipe laminated mutually, and the condensation segment includes the condensation piece that a plurality of and water level pipe laminated mutually, and the cold junction setting of thermoelectric pair is in the condensation segment, and thermoelectric pair's hot junction sets up in the preheating section.

As a preferred scheme, the device comprises an outer barrel sleeved on the periphery of the water level pipeline, and a heat insulation layer and a water-resisting layer are sequentially filled between the anti-condensation device and the outer barrel.

As a preferable scheme, the top of the outer cylinder is rotatably connected with a top cover, a fixed support is fixedly arranged in the outer cylinder, and the radar water level sensor is vertically and fixedly arranged on the fixed support.

Preferably, the heating ring sheets are wavy, and all the heating ring sheets are arranged from top to bottom in sequence.

Preferably, the radiating fins are annular, and all the radiating fins are arranged in sequence from top to bottom.

As a preferable scheme, the condensation sheet comprises a plurality of fin arrays which are sequentially distributed along the circumferential direction of the water level pipeline, a flow passage is arranged between every two adjacent fin arrays, and the fin arrays are fixedly connected with the flow passage.

As a preferable scheme, the fin array comprises two fin groups arranged in parallel, each fin group comprises a plurality of fins arranged from top to bottom in sequence, and an included angle of 45 degrees is formed between each fin and the overflowing channel.

Preferably, a heat insulating layer is arranged between the preheating section and the condensing section.

Preferably, the thermoelectric pair comprises an N-type semiconductor, a P-type semiconductor and an external power supply arranged outside the water level pipeline, and the N-type semiconductor and the P-type semiconductor are both electrically connected with the external power supply.

Has the advantages that: the utility model discloses an anti-condensation device based on the semiconductor dehumidification principle, for traditional compressor dehumidifier and runner formula dehumidifier, simple structure need not chemical reaction or liquid medium and participates in, when normal use, the noiselessness, no moving part wearing and tearing, and is small, light in weight, long service life, the installation is dismantled simply, advantages such as convenient maintenance.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the condensation section of the present invention;

fig. 3 is the schematic diagram of the internal structure of the preheating section of the present invention.

Description of the drawings: 1-radar water level sensor, 2-probe lower surface, 3-outer cylinder, 4-top cover, 5-fixed support, 6-water level pipeline, 7-condensation preventing device, 8-condensation section, 9-preheating section, 10-constant temperature heating section, 11-condensation sheet, 12-radiating sheet, 13-heat insulating layer, 14-heating ring sheet, 15-thermoelectric pair, 16-P type semiconductor, 17-N type semiconductor, 18-external power supply, 19-heat insulating layer, 20-water insulating layer, 21-fin and 22-overflowing channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, an anti-condensation radar level sensor auxiliary device, the radar level sensor 1 extends into a vertically arranged water level pipeline 6, the device includes an anti-condensation device 7 sleeved outside the water level pipeline 6, the anti-condensation device 7 includes a plurality of thermoelectric pairs 15, and a constant temperature heating section 10, a preheating section 9 and a condensing section 8 which are sequentially arranged from top to bottom, a probe lower surface 2 of the radar level sensor 1 is located inside the constant temperature heating section 10, the constant temperature heating section 10 includes a plurality of heating ring sheets 14 attached to the water level pipeline 6, the preheating section 9 includes a plurality of cooling fins 12 attached to the water level pipeline 6, the condensing section 8 includes a plurality of condensation sheets 11 attached to the water level pipeline 6, a cold end of the thermoelectric pair 15 is arranged in the condensing section 8, and a hot end of the thermoelectric pair 15 is arranged in the preheating section 9.

The utility model discloses when using, the great air of 6 bottoms humidity of water level pipeline is cooling when meetting condensation segment 8, thereby vapor meets condensation and separates out moisture, moisture flows to the below along condensation piece 11 downwards, and the air through dehumidification processing is in after accomplishing heat exchange with fin 12 full contact when passing through preheating section 9, the temperature rises, at last in the constant temperature heating section 10 time by heating ring piece 14 further heating, form hot air futilely, because probe lower surface 2 is located the inside of constant temperature heating section 10, all the time by hot air surround futilely, be in the state that low humidity constant temperature does not have condensation, thereby ensure that radar level sensor 1 can be long-term steady operation under the higher environment of humidity.

Specifically, the present invention utilizes thermoelectric pair 15 to realize condensation and preheating under the normal state, and when the loop formed by the electrons in P-type semiconductor 16 and N-type semiconductor 17 is energized with dc current, the electrons in P-type semiconductor 16 and the electrons in N-type semiconductor 17 will move under the action of the external electric field under the seebeck effect. When electrons pass from the P-type semiconductor 16 to the N-type semiconductor 17 through the junction, the temperature at the junction (i.e., the lower end of the thermoelectric pair 15) is lowered, and the junction is a cold end and is arranged in the condensation section 8, so that the purpose of water vapor condensation is achieved; when the loop electrons pass through the P-type semiconductor 16 from the N-type semiconductor 17, the temperature at the junction (i.e., the upper end of the thermoelectric pair 15) is increased, where the junction is a hot end and is disposed in the preheating section 9, and the heat emitted from the hot end is dissipated through the heat sink 12, so as to preheat the air after the condensation process.

Although the thermoelectric pair 15 can perform a good condensation and preheating effect, there is a certain limitation in practical use. The radar water level gauge sensor 1 works all the year round to measure the water level condition, the temperature is higher in spring, summer and autumn, and the thermoelectric pair 15 and the heating ring piece 14 are matched to achieve a good using effect. However, the ambient temperature in winter is lower, and the cold junction of thermoelectric pair 15 often forms the frost phenomenon more easily, influences the heat transfer of air and condensation piece 11, and the dehumidification effect of thermoelectric pair 15 is often relatively poor this moment. The utility model discloses utilizing heating ring piece 14 to remedy this not enough, can setting up heating ring piece 14 into low, two grades of high power in the in-service use, spring, summer and autumn heating ring piece 14 low grade power and thermoelectricity are to 15 cooperation works, rely on heating ring piece 14 heated air alone winter, the 14 high-grade power operations of heating ring piece this moment.

Further, the device comprises an outer barrel 3 sleeved on the periphery of the water level pipeline 6, and a heat insulation layer 19 and a water-resisting layer 20 are sequentially filled between the anti-condensation device 7 and the outer barrel 3. Outer cylinder 3 is used for protecting device and radar level sensor 1, and heat preservation 19 and water barrier 20 are used for promoting the protective properties, and specific theory, heat preservation 19 are used for preventing that the heat outwards scatters and disappears to guarantee that hot dry air can keep higher temperature state, water barrier 20 is arranged in preventing that the comdenstion water in the air from oozing to outer cylinder 3. In this embodiment, the heat insulating layer 19 is made of rubber-plastic sponge with good heat insulating performance, and the water-proof layer 20 is made of polyurethane waterproof paint, so that the heat insulating layer has excellent adhesion and water adding performance and strong aging resistance. In other embodiments of the present invention, other materials can be flexibly selected according to actual use requirements, and are not described herein again.

Further, the top of the outer barrel 3 is rotatably connected with a top cover 4, a fixing support 5 is fixedly arranged in the outer barrel 3, and the radar water level sensor 1 is vertically and fixedly arranged on the fixing support 5. The top cover 4 plays a role in protection, the outer barrel 3 can be conveniently opened or closed through rotary setting, the anti-condensation device 7 and the radar water level sensor 1 are conveniently installed and maintained, the rotary mode of the top cover 4 can be in a horizontal plane or in a vertical plane, and the corresponding rotary mode is determined according to actual application environments. The fixing bracket 5 may include a fixing portion and a rotating portion, the fixing portion and the rotating portion being hinged so that the rotating portion may rotate on a horizontal plane, the radar level sensor 1 being provided on the rotating portion.

Further, the heating ring pieces 14 are wave-shaped, and all the heating ring pieces 14 are arranged from top to bottom in sequence. In particular, the heating ring 14 is undulated in the unfolded state, and is bent and looped around the water level pipe 6 in use. The heating ring piece 14 is additionally provided with a heating wire, and heat is generated after the heating ring piece 14 is electrified to heat the heating ring piece, so that the heating effect is improved. In this embodiment, the heating wire is made of a nickel-chromium electrothermal alloy material, and has the advantages of low deformation possibility at high temperature, high emissivity and long service life.

Further, the fins 12 are annular, and all the fins 12 are arranged in this order from top to bottom. In this embodiment, the heat sink 12 is made of copper, and has the advantages of high thermal conductivity and high stability.

Further, the condensation sheet 11 includes a plurality of fin arrays that are sequentially distributed along the circumferential direction of the water level pipeline 6, a flow passage 22 is provided between two adjacent fin arrays, and the fin arrays are fixedly connected with the flow passage 22. When contacting with the cold air of humidity, moisture is appeared on the fin array, then flows into along the surface of fin array and overflows in the passageway 22, finally flows downwards along overflowing the passageway 22, through such structure, can guarantee that the water that appears can form rivers, avoids spreading on the fin array to guarantee that the fin array can continuous work.

Further, the fin array comprises two fin groups arranged in parallel, each fin group comprises a plurality of fins 21 arranged from top to bottom in sequence, and an included angle of 45 degrees is formed between each fin 21 and the corresponding overflowing channel 22. In this embodiment, the fins 21 and the flow-passing channels 22 are made of hydrophilic aluminum alloy foils, so that the condensed water does not stay on the fins, and meanwhile, dust on the fins 21 and the flow-passing channels 22 can be taken away in the process of rapid flowing of the condensed water, thereby achieving the function of automatic cleaning.

Further, a heat insulating layer 13 is arranged between the preheating section 9 and the condensing section 8. The heat insulating layer 13 is used to prevent heat transfer between the preheating section 9 and the condensation section 8, so as to ensure that the two sections can work properly, and in this embodiment, the material of the heat insulating layer 13 is selected from a laminated board based on glass wool cloth and asbestos fibers.

Further, the thermoelectric pair 15 comprises an N-type semiconductor 17, a P-type semiconductor 16 and an external power supply 18 disposed outside the water level pipe 6, and both the N-type semiconductor 17 and the P-type semiconductor 16 are electrically connected to the external power supply 18. Specifically, the P-type semiconductor 16 is electrically connected to the negative electrode of the external power source 18, and the N-type semiconductor 17 is electrically connected to the positive electrode of the external power source 18; the lower end of the thermoelectric pair 15 is positioned in the middle of the condensing section 8, the P-N lower junction is connected with the condensing sheet 11, the upper end of the thermoelectric pair 15 is positioned in the middle of the preheating section 8, and the P-N upper junction is connected with the radiating sheet 12.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides a prevent radar level sensor auxiliary device of condensation, during radar level sensor (1) stretched into water level pipeline (6) of vertical setting, its characterized in that: the device is established including the cover water level pipeline (6) outside prevent condensation device (7), prevent condensation device (7) including a plurality of thermoelectric pair (15) and from the top down constant temperature heating section (10), preheating section (9) and condensation segment (8) that set gradually, probe lower surface (2) of radar level sensor (1) are located the inside of constant temperature heating section (10), and constant temperature heating section (10) include heating ring piece (14) that a plurality of and water level pipeline (6) laminated mutually, and preheating section (9) include fin (12) that a plurality of and water level pipeline (6) laminated mutually, and condensation segment (8) include condensation piece (11) that a plurality of and water level pipeline (6) laminated mutually, and the cold junction setting of thermoelectric pair (15) is in condensation segment (8), and the setting of thermoelectric pair (15) is in preheating section (9).

2. The radar level sensor aid against condensation of claim 1, wherein: the device is established including the cover urceolus (3) of water level pipeline (6) week side, it has heat preservation (19) and water barrier (20) to fill in proper order between anti-condensation device (7) and urceolus (3).

3. The radar level sensor aid against condensation of claim 2, wherein: the top of urceolus (3) rotates and is connected with top cap (4), and urceolus (3) internal fixation is provided with fixed bolster (5), radar level sensor (1) sets firmly on fixed bolster (5) perpendicularly.

4. The radar level sensor aid against condensation of claim 1, wherein: the heating ring pieces (14) are wavy, and all the heating ring pieces (14) are arranged from top to bottom in sequence.

5. The radar level sensor aid against condensation of claim 1, wherein: the radiating fins (12) are annular, and all the radiating fins (12) are arranged in sequence from top to bottom.

6. The radar level sensor aid against condensation of claim 1, wherein: the condensation sheet (11) comprises a plurality of fin arrays which are sequentially distributed along the circumferential direction of the water level pipeline (6), a flow passage (22) is arranged between every two adjacent fin arrays, and the fin arrays are fixedly connected with the flow passage (22).

7. The radar level sensor aid against condensation of claim 6, wherein: the fin array comprises two fin groups arranged in parallel, each fin group comprises a plurality of fins (21) arranged from top to bottom in sequence, and an included angle of 45 degrees is formed between each fin (21) and the corresponding overflowing channel (22).

8. The radar level sensor aid against condensation of claim 1, wherein: a heat insulating layer (13) is arranged between the preheating section (9) and the condensing section (8).

9. The radar level sensor aid against condensation of claim 1, wherein: the thermoelectric pair (15) comprises an N-type semiconductor (17), a P-type semiconductor (16) and an external power supply (18) arranged outside the water level pipeline (6), and the N-type semiconductor (17) and the P-type semiconductor (16) are both electrically connected with the external power supply (18).

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