CN218093360U - Oil level sensing device - Google Patents

Abstract

The application relates to an oil level monitoring technology field provides an oil level induction system, includes: the side wall of the oil tank is provided with a hole corresponding to the position of the reflector along the horizontal direction; the oil level sensing device comprises a sensing assembly arranged on the outer side of the oil tank, wherein the sensing assembly comprises a light emitter, a light receiver and a temperature sensor, the light emitter and the light receiver correspond to the position of the reflector along the horizontal direction, so that light rays emitted by the light emitter can reach the reflector, and are reflected to the light receiver through the reflector, and the transparent observation window is arranged at an opening of the oil tank and closes the opening.

Description

Oil level sensing device

Technical Field

The application relates to the technical field of oil level monitoring, and more particularly relates to an oil level sensing device.

Background

The piston type air compressor is widely applied to the production and application of medium and high pressure air sources at present, and has a large market holding amount. In a popular manufacturer type configuration, an important lubricating oil alarm and protection device is lacked, and only a transparent oil level inspection window is arranged. In the prior art, the oil quantity is manually and periodically checked, and the height of the oil level is visually checked.

The high-speed reciprocating piston and the crankshaft rotate to keep the sufficient supply of the lubricating oil, which is the key of the normal operation of the air compressor. The irregular volatilization loss and accidental leakage can cause the damage of the core part of the main machine head and the serious accidents of the whole equipment. In addition, the air compressor discharges large heat to the surroundings, so that the temperature is abnormally increased in a small area range and is a common sign of equipment failure, but the oil level of the oil tank is difficult to monitor in an efficient, rapid and reliable manner manually.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an oil level induction system aims at solving the technical problem that the manual work is difficult to carry out high efficiency, swift, the strong monitoring of reliability to the oil tank oil level among the prior art.

In order to achieve the purpose, the utility model adopts the technical proposal that: an oil level sensing device comprising:

the side wall of the oil tank is provided with a hole corresponding to the position of the reflector along the horizontal direction;

a sensing assembly disposed at an outer side of the oil tank, the sensing assembly including a light emitter, a light receiver, and a temperature sensor, the light emitter and the light receiver corresponding to a position of the reflective mirror in a horizontal direction such that light emitted from the light emitter can reach the reflective mirror and be reflected to the light receiver by the reflective mirror,

and the transparent observation window is arranged at the hole of the oil tank and used for closing the hole.

Further, the oil level sensing device comprises a sealing screw cap, a first external thread is arranged on the periphery of the sealing screw cap, a first internal thread is arranged on the peripheral wall of the hole, the sealing screw cap and the peripheral wall of the hole are in threaded connection with each other through the first external thread and the first internal thread, the sealing screw cap is provided with an inner hole, and the transparent observation window is installed in the inner hole in a sealing mode.

Furthermore, one side of the reflector is connected with a plurality of extension pins, and the extension pins are installed at one end of an inner hole of the sealing screw cover.

Further, the oil level sensing device comprises a sealing sleeve, the sealing sleeve is arranged in an inner hole of the sealing screw cap and is in sealing contact with the hole wall of the inner hole, and two ends of the sealing sleeve respectively abut against the extension pin and the transparent observation window.

Further, the inner hole of the sealing screw cap is provided with a second internal thread, the outer periphery of the sealing sleeve is provided with a second external thread, and the sealing screw cap and the sealing sleeve are in threaded connection with each other through the second external thread and the second internal thread.

Further, the oil level sensing device comprises a mounting bracket arranged on the outer side of the oil tank, and the light emitter, the light receiver and the temperature sensor are mounted on the mounting bracket.

Further, the mounting bracket includes the diaphragm and connect perpendicularly in the riser of diaphragm, the riser is installed to the outer wall of oil tank, have on the riser and supply the through-hole that sealed spiral shell lid passed.

Further, the oil level sensing device comprises a sealing cover which is mounted on the mounting frame and hermetically covers the light emitter, the light receiver and the temperature sensor.

Further, the reflector is circular.

Further, the oil level sensing device comprises a master control unit, and the light emitter, the light receiver and the temperature sensor are respectively in signal connection with the master control unit.

The application provides an oil level induction system's beneficial effect lies in:

the embodiment of the utility model provides an among the oil level induction system, through setting up the reflector in the inside of oil tank, set up the response subassembly in the outside of oil tank, the response subassembly includes light emitter, light receiver and temperature sensor, in oil level or other liquid medium, utilizes its composition to have the characteristic of absorbing incident light, influences the luminous intensity after the speculum returns then, leads to light receiver's level amplitude variation to detect the scale volume of liquid. Because the device is few, consequently have non-contact, adorn the advantage of formula, portability outward, in fields such as oil, chemical solution, possess very extensive application prospect, in addition, temperature sensor is near the oil tank, can in time monitor the inside temperature of oil tank, prejudge whether equipment breaks down in advance.

The embodiment of the utility model provides an oil level induction system is not limited to the oil mass of air compressor machine (volumetric type, power type, heating power type) and the monitoring of temperature, is applicable to any other equipment that set up oil level inspection window. For long-term unattended equipment, the two key parameters are monitored through optical monitoring and temperature monitoring of the temperature sensor, so that safe operation of an automatic system can be well guaranteed, inspection workload is greatly reduced, and failure rate is effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a top cross-sectional view of a fuel level sensing apparatus provided in an embodiment of the present application;

fig. 2 is an exploded perspective view of a fuel level sensing apparatus provided in accordance with an embodiment of the present application;

fig. 3 is a perspective assembly view of an oil level sensing device provided in an embodiment of the present application;

FIG. 4 is a graph showing the relationship between the oil level variation in the transparent viewing window and the vertical area of the oil level sensing apparatus according to an embodiment of the present application;

fig. 5 is a table showing the relationship between the oil level and the output voltage when the oil level sensing device according to an embodiment of the present application is applied;

fig. 6 is a schematic diagram illustrating a normal oil level monitoring of the oil level sensing device according to an embodiment of the present application;

FIG. 7 is a schematic diagram illustrating the monitoring of a fault oil level in accordance with an oil level sensing device provided in an embodiment of the present application;

fig. 8 is a schematic diagram illustrating the monitoring of an accident oil level by the oil level sensing device according to an embodiment of the present application.

Reference is now made to the following figures, in which:

1-an oil tank;

2-a reflector;

3-a light emitter;

4-an optical receiver;

5-a temperature sensor;

6-transparent viewing window;

7-extension pins;

8-sealing a screw cap;

9-sealing sleeve;

10-a sealing cover;

11-oil liquid;

100-a mounting frame;

101-a transverse plate;

102-vertical plate.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

Referring to fig. 1 to 3, an embodiment of the present invention provides an oil level sensing device, wherein, include:

the side wall of the oil tank 1 is provided with a hole corresponding to the position of the reflector 2 along the horizontal direction;

a sensing component arranged at the outer side of the oil tank 1, the sensing component comprises a light emitter 3, a light receiver 4 and a temperature sensor 5, the light emitter 3 and the light receiver 4 correspond to the position of the reflector 2 along the horizontal direction, so that the light emitted by the light emitter 3 can reach the reflector 2 and is reflected to the light receiver 4 through the reflector 2,

and a transparent observation window 6 which is arranged at the hole of the oil tank 1 and closes the hole.

The embodiment of the utility model provides an among the oil level induction system, through setting up reflector 2 in the inside of oil tank 1, set up the response subassembly in the outside of oil tank 1, the response subassembly includes light emitter 3, photoreceptor 4 and temperature sensor 5, in oil level or other liquid medium, utilizes its composition to have the characteristic of absorbing incident light, influences the luminous intensity after the speculum returns then, leads to photoreceptor 4's level amplitude variation to detect the scale volume of liquid. Because the device is few, consequently have non-contact, adorn the advantage of formula, portability outward, in fields such as oil, chemical solution, possess very extensive application prospect, in addition, temperature sensor 5 is near oil tank 1, can in time monitor the inside temperature of oil tank 1, prejudge whether equipment breaks down in advance.

The embodiment of the utility model provides an oil level induction system is not limited to the oil mass of air compressor machine (volumetric type, power type, heating power type) and the monitoring of temperature, is applicable to any other equipment that set up oil level inspection window.

For long-term unattended equipment, the two key parameters are monitored through optical monitoring and temperature monitoring of the temperature sensor 5, so that safe operation of an automatic system can be well guaranteed, inspection workload is greatly reduced, and failure rate is effectively reduced.

Wherein, temperature sensor 5 prefers NTC temperature sensor, and NTC temperature sensor is a thermistor, probe, and its principle does:

the resistance value decreases rapidly with increasing temperature. It is usually composed of 2 or 3 metal oxides, mixed in a fluid-like clay, and calcined in a high temperature furnace to a dense sintered ceramic. The physical dimensions are quite flexible and they can be as small as 0.010 inches or even smaller in diameter. The maximum size is almost unlimited, but is typically less than half an inch.

According to the utility model discloses an embodiment, oil level induction system includes sealed spiral shell lid 8, and the periphery of sealed spiral shell lid 8 has first external screw thread, and the perisporium of entrance to a cave has first internal thread, and sealed spiral shell lid 8 and the perisporium of entrance to a cave are threaded connection each other through first external screw thread and first internal thread, and sealed spiral shell lid 8 has the hole, and 6 seal installation of transparent observation window are in the hole.

According to the utility model discloses an embodiment, one side of reflector 2 is connected with a plurality of extension pins 7 (for example become 4 of symmetrical arrangement), and extension pin 7 is installed in sealed spiral shell lid 8's hole one end.

According to the utility model discloses an embodiment, oil level induction system includes seal cover 9, and seal cover 9 is installed in the hole of sealed spiral shell lid 8 and with the pore wall sealing contact of hole, and seal cover 9's both ends are supported respectively and are leaned on extension pin 7 and transparent observation window 6.

According to the utility model discloses an embodiment, the hole of sealed spiral shell lid 8 has the second internal thread, and the periphery of seal cover 9 has the second external thread, and sealed spiral shell lid 8 is threaded connection each other through second external thread and second internal thread with seal cover 9.

According to an embodiment of the present invention, the oil level sensing device includes a mounting bracket 100 disposed at an outer side of the oil tank 1, and the light emitter 3, the light receiver 4, and the temperature sensor 5 are mounted on the mounting bracket 100.

According to the utility model discloses an embodiment, mounting bracket 100 includes diaphragm 101 and vertical plate 102 of connecting perpendicularly in diaphragm 101, and vertical plate 102 is installed to the outer wall of oil tank 1, has the through-hole that supplies sealed spiral cover 8 to pass on the vertical plate 102.

According to an embodiment of the present invention, the oil level sensing device includes a sealing cover 10, the sealing cover 10 is installed on the mounting frame 100, and covers the light emitter 3 and the light receiver 4.

According to an embodiment of the invention, the mirror 2 is circular, but other shapes are also possible, such as square, rectangular, triangular, etc.

According to the utility model discloses an embodiment, oil level induction system includes total control unit, can be computer or PLC, and light emitter 3, light receiver 4 and temperature sensor 5 respectively with total control unit signal connection.

Use circular reflector 2 to introduce as the example below the utility model discloses oil level induction system's concrete monitoring principle:

fig. 4 is a graph showing the relationship between the oil level change and the vertical area in the transparent observation window 6.

According to the diameter of the transparent observation window 6 of 41mm, the quantitative value of the corresponding oil amount projection area changing along with the continuous descending of the oil level height is calculated. The change of the oil level directly affects the diffuse reflection intensity of the light. The trend is that the oil level drops, the light absorption decreases, the light intensity of the mirror increases, the light receiver 4 is acted upon, and the output voltage increases.

FIG. 5 is a table of oil level versus output voltage.

And after the reflecting area is calculated through the liquid level area, a corresponding table of the liquid level height is obtained. The corresponding relation between the liquid level height and the light reflecting area is visually displayed in the meter. The light absorption coefficient of the oil is K, and the output voltage change interval of the light receiver 4 is calculated.

Fig. 6 is a schematic diagram showing the operation of the oil level sensing apparatus at a normal oil level.

This figure shows that when the oil level of the oil 11 is higher than the transparent viewing window 62/3, most of the emitted light is absorbed by the oil, the intensity of the light returned by the mirror 2 is minimal, and the output voltage of the light receiver 4 is small.

Fig. 7 is a schematic diagram showing the operation of the oil level sensing apparatus at the time of a failed oil level.

This figure shows that when the oil level of the oil 11 is lower than the transparent observation window 61/2, a part of the emitted light is absorbed by the oil, the intensity of the light returned by the reflector 2 becomes greater, and the output voltage of the light receiver 4 becomes higher. A fault signal may be detected.

Fig. 8 is a schematic diagram of the operation of the oil level sensing device at the time of an accident oil level.

This figure shows that when the oil level of the oil 11 is lower than the transparent viewing window 61/3, most of the emitted light is returned by the mirror 2, the intensity of the light is the highest, and the output voltage of the light receiver 4 is the highest. An accident signal can be detected.

To summarize, the oil level is normally low, the light receiver 4 is low enough not to trigger a warning. When the oil level is in fault, the higher level of the optical receiver 4 is connected to a post-processing circuit, and other alarm prompts can be triggered. When the accident oil level occurs, the intensity of total reflected light is generated, the optical receiver 4 outputs the highest level, and the protection actions such as shutdown, alarm and the like are triggered.

The above description is intended only to serve as an alternative embodiment of the present application, and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1. An oil level sensing device, comprising:

the side wall of the oil tank is provided with a hole corresponding to the position of the reflector along the horizontal direction;

a sensing assembly disposed at an outer side of the oil tank, the sensing assembly including a light emitter, a light receiver, and a temperature sensor, the light emitter and the light receiver corresponding to a position of the reflective mirror in a horizontal direction such that light emitted from the light emitter can reach the reflective mirror and be reflected to the light receiver by the reflective mirror,

and the transparent observation window is arranged at the hole of the oil tank and used for closing the hole.

2. The oil level sensing device according to claim 1, comprising a seal screw cap having a first external thread on an outer periphery thereof, and a first internal thread on a peripheral wall of said hole, said seal screw cap being screw-coupled with said peripheral wall of said hole through said first external thread and said first internal thread, said seal screw cap having an inner hole in which said transparent observation window is sealingly installed.

3. The oil level sensing device according to claim 2, wherein a plurality of extension pins are connected to one side of the reflector, and the extension pins are installed at one end of the inner hole of the seal screw cap.

4. The oil level sensing device according to claim 3, characterized in that it comprises a sealing sleeve mounted in the inner bore of said sealing screw cap and in sealing contact with the bore wall of said inner bore, both ends of said sealing sleeve abutting against said extension pin and transparent viewing window, respectively.

5. The oil level sensing device according to claim 4, wherein the inner bore of the seal screw cap has a second internal thread, the outer circumference of the seal gland has a second external thread, and the seal screw cap and the seal gland are screw-coupled to each other by the second external thread and the second internal thread.

6. The fuel level sensing device according to any one of claims 2 to 5, comprising a mounting bracket disposed outside the fuel tank, the light emitter, light receiver and temperature sensor being mounted on the mounting bracket.

7. The oil level sensing device according to claim 6, wherein the mounting bracket comprises a horizontal plate and a vertical plate vertically connected to the horizontal plate, the vertical plate is mounted to the outer wall of the oil tank, and the vertical plate is provided with a through hole for the sealing screw cap to pass through.

8. The oil level sensing device of claim 6, comprising a sealing cover mounted to the mounting bracket and covering the light emitter and light receiver.

9. The oil level sensing device according to any one of claims 1 to 5, wherein said mirror is circular.

10. The oil level sensing device according to any one of claims 1 to 5, characterized in that it comprises an overall control unit to which the light emitter, light receiver and temperature sensor are respectively in signal connection.

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