Oil level detection device and detection method

Abstract

The present invention discloses an oil level detection device and detection method, including a circuit board and a processor, and also includes: the end cover structure is detachably installed on the top of the oil tank, the circuit board is built-in inside the end cover structure, the processor is integrated on the circuit board, a display device is arranged on the upper part of the end cover structure, a power supply is built-in inside the end cover structure, the power supply is connected to a charging port, and both the power supply and the charging port are connected to the circuit board; the pressure detection unit is placed inside the oil tank, and the pressure signal is fed back to the processor through the pressure detection unit, and is displayed on the display device after being processed by the processor; the float is installed at the bottom of the pressure detection unit, and under the buoyancy of the float, the pressure detection unit is separated from the oil surface, the counterweight device cooperates with the pressure detection unit, and the counterweight device sinks into the oil; the device can float and move in the oil tank, and can meet the detection needs even if the oil tank is tilted.

Description

Technical Field

[0001] The invention relates to an oil level detection device and a detection method. Background Art

[0002] Outdoor power generation equipment needs to be equipped with a relatively large capacity oil tank. This type of oil tank is different from traditional automobile oil tanks. Its structure is relatively simple, and it is deep and has a large internal container. When it is on a slope, the height difference between the two ends of the oil tank is relatively large after it is tilted. The oil level detection device in traditional technology uses a float for detection, and the float is fixedly connected by a connecting rod. The connecting rod is driven to rotate by the height change of the float, and the oil level is detected by the change in angle. However, after the deep oil tank is tilted, the float that is raised and lowered in a fixed position cannot adapt to the tilt change of the oil tank, so its detection ability cannot meet the use needs. It is also necessary to find a flat position to park the oil tank to meet its detection needs. When generating electricity outdoors, such a flat ground is often not available. For example, in scenarios such as emergency rescue, a flat ground cannot be provided. Therefore, this type of float-type detection device in the prior art cannot meet actual needs.

[0003] Therefore, we have designed an oil level detection device and detection method which can float in the oil tank and can meet the detection needs even if the oil tank is tilted. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an oil level detection device and a detection method which can float in an oil tank and can meet detection requirements even if the oil tank is tilted.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] An oil level detection device includes a circuit board and a processor, and further includes:

[0007] An end cover structure, wherein the end cover structure is detachably mounted on the top of the fuel tank, the circuit board is built-in inside the end cover structure, the processor is integrated on the circuit board, a display device is arranged on the upper part of the end cover structure, a buzzer connected to the circuit board is arranged on the top of the end cover structure, a power supply is built-in inside the end cover structure, the power supply is connected to a charging port, and both the power supply and the charging port are connected to the circuit board,

[0008] A pressure detection unit is placed inside the oil tank. The pressure detection unit feeds back a pressure signal to the processor, which is then processed by the processor and displayed on a display device.

[0009] A float is installed at the bottom of the pressure detection unit. Under the buoyancy of the float, the pressure detection unit is separated from the oil surface.

[0010] A counterweight device is provided, wherein the counterweight device cooperates with the pressure detection unit, and the counterweight device is sunk into the oil.

[0011] Preferably, the pressure detection unit includes an outer shell, a shell cover is detachably provided on the upper end of the outer shell, a convex tube is provided at the inner bottom position of the outer shell, the convex tube is convex, and a vertical rod is slidably fitted in the convex tube, a top plate is provided at the upper end of the vertical rod, a spring is installed on the outside of the convex tube, the spring acts between the outer shell and the top plate, an electronic scale for detecting the pressure of the top plate moving upward is fixed in the outer shell, a wiring harness is connected between the electronic scale and the circuit board, the wiring harness passes through the shell cover, and cooperates with the counterweight device through the vertical rod, the float barrel is installed at the bottom of the outer shell, a folding sealing tube is provided between the top plate and the outer shell, and the spring is located on the inner side of the folding sealing tube.

[0012] Preferably, a seal is provided between the wiring harness and the housing cover.

[0013] Preferably, a through hole is provided at the center of the floating barrel, the through hole corresponds to the convex tube, and the counterweight device passes through the through hole.

[0014] Preferably, the counterweight device comprises a counterweight rod, a connecting rope is fixed to the upper end of the counterweight rod, and the connecting rope is engaged with the vertical rod after being inserted into the through hole.

[0015] Preferably, a mounting hole is provided at the axis center of the counterweight rod, the mounting hole passes downward through the counterweight rod, a through groove is provided at the outer wall of the counterweight rod, a retaining ring is threadedly connected at the bottom of the mounting hole, a sliding rod is fitted through the retaining ring, a counterweight end is provided at the lower end of the sliding rod, and the upper end of the sliding rod passes through the retaining ring and is fitted with a limiting nut.

[0016] Preferably, an eccentric block is provided at a position close to the top of the outer wall of the counterweight rod.

[0017] Preferably, the through hole is a tapered hole, the diameter of which gradually decreases upwards, an oil deflector cup is arranged in the through hole, the oil deflector cup is tapered, the diameter of which gradually decreases downwards, and the connecting rope passes through the oil deflector cup.

[0018] Preferably, an annular groove is provided on the outer wall of the shell, and a hollow rubber airbag is fitted through the annular groove.

[0019] A detection method for an oil level detection device comprises the following steps:

[0020] The first step is to adjust the matching position of the counterweight device and the pressure detection unit according to the height of the installed oil tank, so that under the buoyancy of the float, the bottom of the counterweight device is separated from the bottom surface of the oil tank, and the end cover structure is installed on the top of the oil tank, and the end cover structure is connected to the pressure detection unit.

[0021] In the second step, when the liquid level in the fuel tank drops, the height of the float drops accordingly. After the bottom of the counterweight device contacts the bottom surface, the downward pressure applied to the pressure detection unit decreases. At this time, the display device begins to show the change in liquid level. When the counterweight device lies at the bottom of the fuel tank, the downward pressure applied to the pressure detection unit disappears. At this time, the buzzer sounds an alarm to remind you to add fuel.

[0022] The beneficial effects of the present invention are:

[0023] Advantage 1: This device adopts an upper end cover structure and can be installed at any position on the top of the oil tank as needed. It has strong versatility and does not require any other modifications to the oil tank, so the upgrade cost is low.

[0024] The second advantage is that the pressure detection unit is supported by a floating barrel so that it is always suspended above the oil surface, reducing the failure rate.

[0025] Advantage three: the counterweight device moves with the position of the float, and even if the oil tank is in a tilted state, it will not affect the measurement of the oil level. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 is a three-dimensional diagram of the end cover structure;

[0029] Figure 3 It is a cross-sectional view of the pressure detection unit and the float bucket in the matching state;

[0030] Figure 4 is a three-dimensional diagram of the counterweight device;

[0031] Figure 5 A three-dimensional diagram of the slider. DETAILED DESCRIPTION

[0032] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0033] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0034] In the description of the present invention, it is necessary to understand that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, in the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "disposed", "socketed", "connected", "through", "plugged" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figures 1 to 5 The oil level detection device shown includes a circuit board and a processor, and further includes:

[0038] The end cover structure 1 is detachably mounted on the top of the fuel tank, the circuit board is built-in inside the end cover structure 1, the processor is integrated on the circuit board, a display device 11 is arranged on the upper part of the end cover structure 1, a buzzer 99 connected to the circuit board is arranged on the top of the end cover structure 1, a power supply is built-in inside the end cover structure 1, the power supply is connected to the charging port 191, and the power supply and the charging port 191 are both connected to the circuit board,

[0039] The pressure detection unit 2 is placed inside the oil tank. The pressure detection unit 2 feeds back the pressure signal to the processor, and the pressure signal is displayed on the display device 11 after being processed by the processor.

[0040] The float 3 is installed at the bottom of the pressure detection unit 2. Under the buoyancy of the float 3, the pressure detection unit 2 is separated from the oil surface.

[0041] The counterweight device 4 cooperates with the pressure detection unit 2, and the counterweight device 4 sinks into the oil.

[0042] See also Figure 3 As shown, the pressure detection unit 2 includes a shell 21, a shell cover 22 is detachably provided at the upper end of the shell 21, a convex tube 23 is provided at the inner bottom position of the shell 21, the convex tube 23 is convex, and a vertical rod 24 is slidably fitted in the convex tube 23, a top plate 25 is provided at the upper end of the vertical rod 24, a spring 26 is installed on the outside of the convex tube 23, the spring 26 acts between the shell 21 and the top plate 25, an electronic scale 27 for detecting the upward movement pressure of the top plate 25 is fixed in the shell 21, a wiring harness 28 is connected between the electronic scale 27 and the circuit board, the wiring harness 28 passes through the shell cover 22, and cooperates with the counterweight device 4 through the vertical rod 24, the float 3 is installed at the bottom of the shell 21, a folding sealing tube 299 is provided between the top plate 25 and the shell 21, and the spring 26 is located on the inner side of the folding sealing tube 299.

[0043] In the above technical solution, the vertical rod 24 is pulled down by the counterweight device 4, so that the force of the top plate 25 on the electronic scale is reduced. When the bottom of the counterweight device 4 gradually contacts the inner bottom of the oil tank, the downward force on the vertical rod 25 gradually decreases, and the pressure fed back to the electronic scale by the top plate 25 increases. The electronic scale transmits the pressure signal to the circuit board, which is then processed by the processor and controls the display device 11 to display it.

[0044] See also Figure 2 As shown, a seal 29 is provided between the wiring harness 28 and the housing cover 22 .

[0045] The seal 29 is provided to increase the sealing performance at the contact position between the wiring harness 28 and the shell cover 22. Considering the need for outdoor power generation, the oil tank of the mobile power generation equipment is bumpy during transportation, so the seal 29 is provided to prevent oil and water from entering the shell 21.

[0046] See also Figure 3 As shown, a through hole 31 is provided at the center of the floating barrel 3 , the through hole corresponds to the convex tube 23 , and the counterweight device 4 passes through the through hole 31 .

[0047] The provision of the through hole 31 facilitates the coordination with the counterweight device 4, so that the hanging position of the counterweight device 4 is located at the axis center of the shell 21. Since the center of gravity is stable, the floating barrel 3 floats more stably.

[0048] See also Figure 3 and Figure 4 As shown, the counterweight device 4 includes a counterweight rod 41 , and a connecting rope 442 is fixed to the upper end of the counterweight rod 41 . The connecting rope 442 is inserted into the through hole 31 and then cooperates with the vertical rod 24 .

[0049] By cooperating with the counterweight rod 41 through the connecting rope 442 , when the oil tank tilts, under the action of gravity, the counterweight rod 41 and the connecting rope 442 remain vertical, so as to apply a stable downward pulling force to the vertical rod 24 .

[0050] See also Figure 4 and Figure 5 As shown, a mounting hole is provided at the axis center of the counterweight rod 41, and the mounting hole passes downward through the counterweight rod 41. A through groove 43 is provided at the outer wall of the counterweight rod 41. A retaining ring is threadedly connected at the bottom of the mounting hole, and a sliding rod 45 is fitted through the retaining ring. A counterweight end 46 is provided at the lower end of the sliding rod 45, and the upper end of the sliding rod 45 passes through the retaining ring 44 and is fitted with a limiting nut 47.

[0051] In the above technology, the counterweight accuracy can be increased by setting the slide bar 45. The slide bar 45 can slide along the counterweight rod 41. When the liquid level in the oil tank is high, the counterweight end 46 is separated from the bottom of the oil tank, and the entire counterweight device 4 is in a suspended state. When the liquid level drops to the point where the counterweight end 46 contacts the bottom of the oil tank, the pressure applied to the electronic scale is reduced, and feedback can be provided through the display device 11, indicating that the liquid level in the oil tank begins to decrease.

[0052] See also Figure 4 As shown, an eccentric block 48 is provided near the top of the outer wall of the counterweight rod 41 .

[0053] The arrangement of the eccentric block 48 allows the counterweight rod 41 to tilt toward the arrangement direction of the eccentric block 48 after the liquid level in the oil tank drops, so that the counterweight rod 41 can lie down easily.

[0054] See also Figure 3 As shown, the through hole 31 is a tapered hole, and its diameter gradually decreases upward. An oil deflector cup 331 is arranged in the through hole 31. The oil deflector cup 331 is tapered, and its diameter gradually decreases downward. The connecting rope 442 passes through the oil deflector cup 331.

[0055] The above technical solution can further prevent oil and water from entering the housing 21 .

[0056] See also Figure 3 As shown, an annular groove 221 is provided on the outer wall of the housing 21 , and a hollow rubber airbag 222 is fitted through the annular groove 221 .

[0057] The above technical solution takes into account the bumps generated during transportation, avoids hard contact between the outer shell 21 and the inner wall of the oil tank, and reduces abnormal sounds and noise.

[0058] A detection method for an oil level detection device comprises the following steps:

[0059] The first step is to adjust the matching position of the counterweight device 4 and the pressure detection unit 2 according to the height of the installed oil tank, so that under the buoyancy of the float 3, the bottom of the counterweight device 4 is separated from the bottom surface of the oil tank, and the end cover structure 1 is installed on the top of the oil tank, and the end cover structure 1 is connected to the pressure detection unit 2.

[0060] In the second step, when the liquid level in the fuel tank drops, the height of the float 3 drops accordingly. After the bottom of the counterweight device 4 contacts the bottom surface, the downward pressure applied to the pressure detection unit 2 decreases. At this time, the display device begins to display the change in liquid level. When the counterweight device 4 lies at the bottom of the fuel tank, the downward pressure applied to the pressure detection unit 2 disappears. At this time, the buzzer 99 sounds an alarm to remind you to add fuel.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An oil level detection device, comprising a circuit board and a processor, characterized in that: Also includes, An end cover structure (1) is detachably mounted on the top of a fuel tank, the end cover structure (1) has the circuit board built in, the circuit board has the processor integrated thereon, a display device (11) is arranged on the top of the end cover structure (1), a buzzer (99) connected to the circuit board is arranged on the top of the end cover structure (1), a power supply is built in the end of the end cover structure (1), the power supply is connected to a charging port (191), and both the power supply and the charging port (191) are connected to the circuit board, A pressure detection unit (2), the pressure detection unit (2) being placed inside the oil tank, and the pressure signal is fed back to the processor through the pressure detection unit (2), and is displayed on the display device (11) after being processed by the processor. A floating barrel (3), the floating barrel (3) being installed at the bottom of the pressure detection unit (2), and under the buoyancy of the floating barrel (3), the pressure detection unit (2) is separated from the oil surface. A counterweight device (4), the counterweight device (4) cooperates with the pressure detection unit (2), and the counterweight device (4) is sunk into the oil; The pressure detection unit (2) comprises a housing (21), the upper end of the housing (21) is detachably provided with a housing cover (22), a convex tube (23) is provided at the inner bottom of the housing (21), the convex tube (23) is convex, a vertical rod (24) is slidably fitted in the convex tube (23), a top plate (25) is provided at the upper end of the vertical rod (24), a spring (26) is installed outside the convex tube (23), the spring (26) acts between the housing (21) and the top plate (25), and a spring (26) is provided inside the housing (21). An electronic scale (27) is fixed to detect the upward movement pressure of the top plate (25). A wiring harness (28) is connected between the electronic scale (27) and the circuit board. The wiring harness (28) passes through the shell cover (22) and cooperates with the counterweight device (4) through the vertical rod (24). The float barrel (3) is installed at the bottom of the shell (21). A folding sealing tube (299) is provided between the top plate (25) and the shell (21). The spring (26) is located on the inner side of the folding sealing tube (299).

2. The oil level detection device according to claim 1, characterized in that: A sealing member (29) is provided between the wiring harness (28) and the shell cover (22).

3. The oil level detection device according to claim 1, characterized in that: A through hole (31) is provided at the center of the floating barrel (3), the through hole corresponding to the convex tube (23), and the counterweight device (4) passes through the through hole (31).

4. The oil level detection device according to claim 3, characterized in that: The counterweight device (4) comprises a counterweight rod (41), a connecting rope (442) being fixed to the upper end of the counterweight rod (41), the connecting rope (442) being inserted into the through hole (31) and then engaging with the vertical rod (24).

5. The oil level detection device according to claim 4, characterized in that: A mounting hole is provided at the axis of the counterweight rod (41), the mounting hole penetrating downwardly through the counterweight rod (41), a through groove (43) is provided at the outer wall of the counterweight rod (41), a retaining ring is threadedly connected at the bottom of the mounting hole, a slide rod (45) is engaged through the retaining ring, a counterweight end (46) is provided at the lower end of the slide rod (45), and the upper end of the slide rod (45) passes through the retaining ring (44) and engages with a limiting nut (47).

6. The oil level detection device according to claim 5, characterized in that: An eccentric block (48) is provided on the outer wall of the counterweight rod (41) near the top.

7. The oil level detection device according to claim 4, characterized in that: The through hole (31) is a tapered hole, the diameter of which gradually decreases upwards; an oil deflector cup (331) is arranged in the through hole (31); the oil deflector cup (331) is tapered, the diameter of which gradually decreases downwards; and the connecting rope (442) passes through the oil deflector cup (331).

8. The oil level detection device according to claim 1, characterized in that: An annular groove (221) is provided on the outer wall of the housing (21), and a hollow rubber airbag (222) is fitted through the annular groove (221).

9. A detection method based on the oil level detection device according to claim 1, characterized in that: The following steps are involved: In the first step, the matching positions of the counterweight device (4) and the pressure detection unit (2) are adjusted according to the height of the oil tank to be installed, so that under the buoyancy of the float (3), the bottom of the counterweight device (4) is separated from the bottom surface of the oil tank, the end cover structure (1) is installed on the top of the oil tank, and the end cover structure (1) is connected to the pressure detection unit (2). In the second step, when the liquid level in the fuel tank drops, the height of the float (3) decreases accordingly. After the bottom of the counterweight device (4) contacts the bottom surface, the downward pressure applied to the pressure detection unit (2) decreases. At this time, the display device starts to display the change in the liquid level. When the counterweight device (4) lies at the bottom of the fuel tank, the downward pressure applied to the pressure detection unit (2) disappears. At this time, the buzzer (99) sounds an alarm to remind you to add fuel.

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