High-precision swing rod oil level gauge
By combining the buoyancy and counterweight components of the high-precision pendulum oil level gauge, the problems of insufficient oil level gauge accuracy and automated monitoring are solved, enabling accurate oil level measurement and simplified maintenance in complex environments, and adapting to the oil level monitoring needs of various working conditions.
Patent Information
- Application Number
- CN202423116413.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing oil level gauges lack sufficient measurement accuracy in high-precision equipment and are difficult to automate monitoring and remote management. They suffer from friction, jamming, and are affected by oil viscosity and impurities, resulting in large measurement errors and making them unsuitable for complex industrial environments.
Design a high-precision pendulum oil level gauge, which adopts a structure with a buoyancy component and a counterweight component. The buoyancy component floats up and down with the rise and fall of the oil surface, while the counterweight component provides stability. It is linked with an alarm switch through a connector to achieve accurate oil level monitoring, and the sensitivity can be adjusted by the counterweight fluid to adapt to complex working conditions.
It provides accurate and effective oil level information in scenarios with frequent oil level fluctuations, reduces monitoring errors, improves durability and reliability, simplifies maintenance operations, reduces maintenance costs, and adapts to oil level monitoring under various operating conditions.
Smart Images
Figure CN223610930U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oil level gauge technical field, specifically, relate to a high accuracy swing lever oil level gauge. BACKGROUND
[0002] The traditional liquid level scale type oil level gauge is the most basic monitoring means, its principle is simple, marks the scale on the oil tank, and the oil level is determined by observing the corresponding scale. But this way is extremely low in precision, can only provide the approximate oil level range, can not meet the needs of high-precision equipment for accurate measurement of oil level. In some precision instruments, automation production line equipment, small oil level error may cause equipment running failure, parts wear and tear aggravation, seriously affect the service life and production efficiency of equipment. Moreover, the liquid level scale relies on manual observation, and it is difficult to realize automatic monitoring and remote management. In the scene of large factory or centralized management of multiple equipment, a large amount of manpower is needed for regular inspection, which increases the labor cost and management difficulty.
[0003] The float ball type oil level gauge was a relatively common improved oil level monitoring device. It uses the characteristics that the float ball moves up and down with the change of oil level to drive the pointer or sensor to indicate the oil level through mechanical transmission or magnetic coupling. However, the float ball type oil level gauge has many limitations. The friction between the float ball and the inner wall of the oil tank is frequent, which can easily cause measurement error, and the error will gradually increase with the use time. In addition, the float ball type oil level gauge is sensitive to the viscosity and impurity content of the oil. When the oil viscosity is large or contains impurities, the movement of the float ball is hindered, and the oil level change cannot be accurately reflected. In some harsh working conditions or long-term unattended equipment oil tank, the reliability of the float ball type oil level gauge is greatly reduced.
[0004] With the development of electronic technology, capacitive oil level gauge and ultrasonic oil level gauge emerged as the times require. The capacitive oil level gauge calculates the oil level height by measuring the change of the capacitance value in the oil tank. But it is easily disturbed by the shape of the oil tank, the internal structure and the surrounding electromagnetic field. In complex industrial environment, the measurement accuracy is difficult to guarantee. The ultrasonic oil level gauge measures the oil level by using the propagation characteristics of ultrasonic waves in oil. But its measurement accuracy is greatly affected by the temperature, density and foam of the oil. In the environment of high temperature, high viscosity or containing foam, the reflection and propagation of ultrasonic signal will be distorted, resulting in large deviation of the measurement result, which cannot provide reliable oil level information for equipment operation. UTILITY MODEL CONTENTS
[0005] The utility model provides a high accuracy swing lever oil level gauge, solves the problem of low accuracy of swing lever oil level gauge in the related art.
[0006] The technical scheme of the utility model is as follows:
[0007] A high-precision swing rod oil level gauge comprises:
[0008] An oil tank having an oil cavity,
[0009] An alarm switch arranged on the tank wall of the oil tank and penetrating the tank wall to extend into the oil cavity,
[0010] A connecting piece swingingly arranged on the alarm switch and located in the oil cavity, the connecting piece triggering the alarm switch to alarm after swinging,
[0011] A buoyancy piece arranged at an end of the connecting piece away from the alarm switch,
[0012] A counterweight piece arranged on the connecting piece and located between the buoyancy piece and the alarm switch.
[0013] As a further technical solution, the counterweight piece has a counterweight cavity for accommodating a counterweight liquid.
[0014] As a further technical solution, the counterweight liquid has the same density as the oil liquid in the oil cavity or is the same oil liquid.
[0015] As a further technical solution, the volume of the oil liquid in the counterweight cavity is one third to one half of the volume of the counterweight cavity.
[0016] As a further technical solution, the counterweight piece is at least one, and the counterweight piece and the buoyancy piece have the same shape and are both hollow spheres.
[0017] As a further technical solution, the alarm switch has a swing groove in which the connecting piece is swingingly arranged, the swing groove has electromagnets on both upper and lower sides, and the alarm switch alarms after the connecting piece abuts against the electromagnets.
[0018] As a further technical solution, the buoyancy piece has a connecting column which is threadedly connected with the connecting piece.
[0019] The working principle and beneficial effects of the utility model are as follows:
[0020] The structure of the oil level meter can effectively cope with this situation and maintain accurate oil level monitoring when the oil in the oil tank fluctuates due to equipment operation, external vibration and other factors. The buoyant member directly contacts the oil and floats up and down with the fluctuation of the oil surface. The swing connection of the connecting member allows it to follow the movement of the buoyant member, and the counterweight member plays a balancing and stabilizing role to avoid monitoring errors caused by excessive reaction of the entire structure due to temporary and violent fluctuations of the oil. Through such cooperation, even in the scene where the oil shakes frequently, the operator can obtain real and effective oil level information.
[0021] The alarm switch is fixed on the oil tank wall, providing a stable installation foundation for the entire oil level meter. The connecting member is connected to the alarm switch in a swinging manner, ensuring flexibility while maintaining structural integrity through the connection point with the alarm switch. The buoyant member and the counterweight member are distributed at different positions of the connecting member. The interaction between the two and the cooperation with the connecting member make the entire structure bear force more evenly in the oil, avoiding structural imbalance caused by gravity center deviation. Even when the oil tank is impacted by external force, the components can still maintain a relatively stable positional relationship, ensuring the normal operation of the oil level meter, reducing the risk of oil level monitoring failure caused by structural damage or component displacement, and improving the durability and reliability of the entire oil level meter.
[0022] When the oil level meter needs to be maintained or the related components need to be inspected and repaired, the structure features make the operation relatively convenient. For example, if the alarm switch is found to be malfunctioning, maintenance personnel can directly inspect and repair it from the outside of the oil tank without the need for large-scale disassembly of the entire oil level meter. For the connecting member, if it does not swing smoothly, it can be easily solved by simply checking the connection part, cleaning or lubricating. If the buoyant member and the counterweight member are worn or damaged, they can also be relatively easily detached from the connecting member for replacement or repair, greatly reducing the difficulty and workload of maintenance, shortening the repair time, reducing the impact on the normal use of the oil level meter, and improving the maintainability and usability of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0023] The above features, technical characteristics, advantages and implementation methods of the present utility model will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.
[0024] Fig. 1 The structure of the present utility model is shown in the figure.
[0025] Fig. 2 The structure of the present utility model is shown in the figure.
[0026] In the figure: oil tank-1, oil cavity-101, alarm switch-2, swing groove-201, connecting piece-3, counterweight-4, oil distribution cavity-403, counterweight liquid-402, buoyancy piece-5, connecting column-501. DETAILED DESCRIPTION
[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.
[0028] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0029] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] In addition, in the description of the present application, the terms "first", "second" and the like are only used for distinction and description, and cannot be understood as indicating or implying relative importance.
[0031] Reference Figs. 1-2 For the first embodiment of the present application, a high-precision swing rod oil level meter is provided, which comprises an oil tank 1, the oil tank 1 has an oil cavity 101, an alarm switch 2 is arranged on the tank wall of the oil tank 1 and penetrates the tank wall of the oil tank 1 to extend into the oil cavity 101, a connecting piece 3 is swingingly arranged on the alarm switch 2 and located in the oil cavity 101, the connecting piece 3 triggers the alarm switch 2 to alarm after swinging, a buoyancy piece 5 is arranged at one end of the connecting piece 3 away from the alarm switch 2, a counterweight 4 is arranged on the connecting piece 3 and located between the buoyancy piece 5 and the alarm switch 2.
[0032] In this embodiment, the oil tank 1 serves as a container for carrying oil, and the oil cavity 101 provides an environmental basis for the entire oil level monitoring. The alarm switch 2 penetrates the wall of the oil tank 1 and extends into the oil cavity 101, which can be directly associated with relevant components in the oil cavity, facilitating timely alarm when the oil level is abnormal. The connecting piece 3 is swingingly arranged on the alarm switch 2, which can flexibly change its attitude according to the change of the oil level. The swing feature enables it to well conduct the force change caused by the change of the oil level. The buoyant piece 5 is arranged at one end of the connecting piece 3 and will generate a corresponding buoyancy change in the oil as the oil level rises and falls. The counterweight 4 is located between the buoyant piece 5 and the alarm switch 2, and by reasonably configuring its weight, it cooperates and restricts the buoyant piece 5 to jointly act on the connecting piece 3, so that the swing angle and position of the connecting piece 3 can accurately reflect the actual height of the oil level, achieving accurate monitoring of the oil level change. Especially in the oil tank of equipment with high oil level precision requirement, it can provide reliable oil level data support for stable operation of the equipment.
[0033] When the oil in the oil tank 1 fluctuates due to factors such as equipment operation and external vibration, the structure of the oil level gauge can effectively cope with such situations and maintain accurate oil level monitoring. The buoyant piece 5 directly contacts the oil and will float up and down with the fluctuation of the oil surface. The swing arrangement of the connecting piece 3 allows it to adapt to the movement of the buoyant piece 5, while the counterweight 4 plays a balancing and stabilizing role, avoiding monitoring errors caused by excessive reaction of the entire structure due to temporary and violent fluctuations of the oil. Through such cooperation, even in the scene where the oil is frequently shaken, the operator can obtain real and effective oil level information.
[0034] The alarm switch 2 is fixed on the wall of the oil tank 1, providing a stable installation basis for the entire oil level gauge. The connecting piece 3 is connected to it in a swing manner, ensuring flexibility while maintaining a certain structural integrity through the connection point with the alarm switch 2. The buoyant piece 5 and the counterweight 4 are distributed at different positions of the connecting piece 3, and the interaction between them and the cooperation with the connecting piece 3 make the entire structure bear force more evenly in the oil, avoiding the problem of structural imbalance caused by center of gravity deviation. Even when the oil tank 1 is subjected to external impact, the components can still maintain a relatively stable positional relationship, ensuring the normal work of the oil level gauge, reducing the risk of oil level monitoring failure caused by structural damage or component displacement, and improving the durability and reliability of the entire oil level gauge.
[0035] When maintenance is required for the oil level gauge or the relevant components are checked, repaired, etc., the structural features make the operation relatively convenient. For example, if it is found that the alarm switch 2 is malfunctioning, the maintenance personnel can directly check and repair it from the outside of the oil tank 1 without the need to disassemble the entire oil level gauge; for the connecting piece 3, if it is not smooth to swing, etc., the problem can be solved by simply checking the connecting part, cleaning or lubricating, etc.; and if the float member 5 and the counterweight member 4 have wear, damage, etc., they can also be relatively easily detached from the connecting piece 3 for replacement or repair, greatly reducing the difficulty and workload of maintenance, shortening the repair time, reducing the impact on the normal use of the oil level gauge, and improving the maintainability and usability of the equipment.
[0036] Further, the float member 5 is a floating ball, and the counterweight member 4 is spherical, and the counterweight member 4 has a sliding cavity 401 that penetrates the ball center of the counterweight member 4.
[0037] In this embodiment, the float member 5 adopts a floating ball shape, and the counterweight member 4 is spherical, and this design in shape makes the two better cooperate in the oil cavity of the oil tank to adapt to the flow characteristics and oil level changes of the oil. The floating ball as the float member 5 can freely float in the oil, and no matter whether the oil surface is in a horizontal state or tilted and fluctuates due to the shaking of the oil tank, etc., the floating ball can quickly change its position to follow the changes of the oil surface and always adhere to the oil surface to accurately reflect the actual height of the oil level. The spherical counterweight member 4 can also rotate and move flexibly on the connecting piece 3 and cooperate with the floating ball, and according to the rise and fall of the oil level, by adjusting its relative position on the connecting piece 3 and the force balance relationship with the floating ball, it realizes sensitive response to the change of the oil level, and improves the accuracy of the entire oil level gauge in monitoring the oil level.
[0038] The design that the sliding cavity 401 of the counterweight member 4 penetrates the ball center provides a convenient and reasonable structural basis for the movement and adjustment of the counterweight member 4 on the connecting piece 3. Because the sliding cavity 401 penetrates the ball center, the center of gravity of the counterweight member 4 is more evenly and stably distributed when it moves, avoiding the situation that the center of gravity deviates to cause jamming or difficulty in accurate positioning during the adjustment of the position. Moreover, when the sensitivity of the oil level gauge is calibrated by changing the position of the counterweight member 4 on the connecting piece 3, the sliding cavity 401 that penetrates the ball center can make the counterweight member 4 slide more smoothly along the connecting piece 3, and the operator can more accurately adjust it to the required position, further optimizing the adjustment function of the oil level gauge in monitoring the oil level under different oil products, different oil tank environments, etc., and ensuring that the oil level gauge can adapt to the oil level monitoring requirements under various complex working conditions.
[0039] Further, the counterweight member 4 has an oil distribution cavity 403 for accommodating the counterweight liquid 402.
[0040] In this embodiment, the counterweight 4 is provided with an oil distribution cavity 403 for accommodating the counterweight liquid 402, which provides a more precise and flexible way for adjusting the counterweight. Compared with the traditional fixed mass counterweight block, by injecting or extracting different amounts of counterweight liquid 402 into the oil distribution cavity 403, the overall weight of the counterweight 4 can be adjusted in a small amount, thereby more accurately changing the sensitivity of the oil level gauge to changes in the oil level. By using the cooperation of the oil distribution cavity 403 and the counterweight liquid 402, the operator can accurately adjust the counterweight according to the specific oil characteristics, tank shape, and use environment, etc. Factors, so that the oil level gauge can sensitively capture the subtle changes in the oil level, and ensure the safe and stable operation of the equipment.
[0041] The counterweight liquid 402 can automatically adjust the distribution in the oil distribution cavity 403 according to the gravity and the attitude of the oil level gauge, so that the center of gravity of the counterweight 4 always remains relatively stable. During the normal operation of the oil level gauge, especially in complex working conditions such as oil liquid sloshing in the tank and equipment running vibration, a stable center of gravity is crucial to maintaining the working performance of the entire oil level gauge. Unlike some solid counterweight blocks that may shift or loosen due to vibration, the counterweight liquid 402 can adaptively change its shape and distribution with the sloshing, ensuring the overall center of gravity of the counterweight 4 to be stable, and then ensuring that the connecting piece 3, the buoyant piece 5 and other related components can accurately perceive the oil level change based on the current counterweight state. The reliability and stability of oil level monitoring are improved, and the risk of oil level misjudgment caused by external interference factors is reduced.
[0042] The oil distribution cavity 403 and the counterweight liquid 402 cooperate with other components of the oil level gauge such as the connecting piece 3, the buoyant piece 5, etc., to improve the stability and integrity of the entire oil level gauge structure. The counterweight 4, through its reasonable counterweight adjustment, cooperates with the buoyant piece 5 to realize accurate response to changes in the oil level with the help of the counterweight liquid 402, and the connecting piece 3 transmits the actions of the two to the alarm switch 2 and other related components. The close relationship and mutual restraint between the components form a stable and reliable oil level monitoring system. When dealing with various forces inside and outside the tank such as the impact force of the oil liquid and the vibration force of the equipment operation, this integrity can ensure the normal operation of the oil level gauge, and is conducive to prolonging the service life of each component, reducing maintenance and replacement costs caused by unstable structure, and improving the durability and economy of the entire oil level gauge.
[0043] In the assembly process of the high-precision oil level meter, the design of the oil distribution cavity 403 of the counterweight 4 and the counterweight liquid 402 facilitates the operation of the construction personnel. In the initial installation stage, the counterweight 4 can be installed in the state of the empty oil distribution cavity 403 to the corresponding position such as the rotating sleeve rod 303, and the installation process is simple and convenient, without considering the additional operation difficulty brought by the counterweight liquid 402. Then, according to the actual needs, the appropriate amount of counterweight liquid 402 is injected into the oil distribution cavity 403, and the whole liquid injection process is relatively low in operation difficulty, without the need for complex equipment or special installation process, so that the configuration of the counterweight can be quickly completed, the efficiency of the on-site assembly is improved, and the labor cost investment is reduced.
[0044] Moreover, this installation method is convenient for the construction personnel to master, and for different installation teams, it can be relatively easily operated according to the standard process, ensuring the consistency of the installation quality of the oil level meter, and being beneficial to ensure the subsequent stable and reliable operation.
[0045] When the oil level meter needs to be maintained or the counterweight 4 needs to be checked and repaired, the structure features make the operation relatively convenient. For example, if it is found that the counterweight liquid 402 is deteriorated, leaked or affected by the counterweight effect due to long-term use, the maintenance personnel can relatively easily drain the counterweight liquid 402 from the oil distribution cavity 403, then clean and check the oil distribution cavity 403, and then re-inject new qualified counterweight liquid 402, without the need to disassemble the whole oil level meter, greatly reducing the difficulty and workload of maintenance, shortening the repair time, reducing the influence on the normal use of the oil level meter, improving the maintainability and usability of the equipment. Similarly, if other parts of the counterweight 4 such as the shell of the oil distribution cavity 403 need to be repaired or replaced, the corresponding operation can also be conveniently carried out after the counterweight liquid 402 is drained, improving the maintainability of the equipment and reducing the maintenance cost. The structural design of the oil distribution cavity 403 and the counterweight liquid 402 makes the oil level meter better adapt to different specifications, different types of oil equipment and various different densities of oil.
[0046] Further, the counterweight liquid 402 has the same density as the oil liquid in the oil cavity 101 or is the same oil liquid.
[0047] In this embodiment, when the density of the counterweight liquid 402 is the same as or the same as the oil liquid in the oil cavity 101, the change in the buoyancy of the floating element 5 and the change in the buoyancy of the counterweight element 4 can maintain high synchronicity and consistency during the change of the oil level. Because the size of the buoyancy is closely related to the volume of the liquid displaced and the density of the liquid, in this case, as the oil level rises and falls, the factors related to the buoyancy in the entire oil level system are more simple and stable, and additional and complex interference factors are not introduced due to the density difference between the oil liquid and the counterweight liquid 402. This makes the system composed of the floating element 5, the counterweight element 4 and the connecting element 3 be able to make corresponding posture adjustment according to the change of the oil level, and further accurately reflect the actual height of the oil level, greatly improving the accuracy of the oil level monitoring, especially in the application scenarios with high requirements for oil level accuracy, such as the oil tank of high-precision instruments and equipment, the fuel tank monitoring in the field of aerospace, etc., which can provide reliable and accurate oil level data basis for related operations.
[0048] Because the density of the counterweight liquid 402 is the same as or the same as the oil liquid in the oil cavity 101, the buoyancy and other related forces acting on the counterweight element 4 in the oil liquid are more uniform and balanced in distribution and size during the operation of the oil level meter. Whether in a static state or in a state of vibration, shaking and other situations during equipment operation, the stress state of the counterweight element 4 is relatively stable, and the density difference will not cause excessive stress or unbalanced force on one side. This helps to maintain the stability of the entire oil level meter structure. At the same time, this uniform stress state also makes the connecting element 3 and other connecting components more smooth and reasonable in the force transmission process, avoiding damage to the components due to excessive local stress, prolonging the service life of each component, improving the durability of the entire oil level meter, reducing the frequency of maintenance or replacement due to component damage, and improving the economy and reliability of the oil level meter as a whole.
[0049] The design that the density of the counterweight liquid 402 is the same as or the same as the oil liquid makes the oil level meter better adapt to different types and working conditions of oil equipment tanks. Whether it is a conventional oil tank storing a single oil product or an oil tank using multiple oil products in some special processes and environments but using the same density oil product as the counterweight liquid 402, the oil level meter can achieve accurate oil level monitoring. At the same time, under different environmental conditions such as high temperature, low temperature and different altitudes, the oil level meter can still work stably due to this characteristic. Because no matter how the environment changes, as long as the density of the oil liquid in the oil cavity is consistent with that of the counterweight liquid 402, the oil level meter is not affected by these external factors, and continuously and accurately monitors the change of the oil level, further improving its versatility, making it suitable for various industrial fields and different application scenarios of oil equipment.
[0050] Further, the volume of the oil liquid in the counterweight cavity 403 is one-third to one-half of the counterweight cavity 403.
[0051] In this embodiment, the volume of the oil in the oil distribution cavity 403 is set to be one third to one half of the volume of the oil distribution cavity 403, which provides just the right flexibility and accuracy for the counterweight adjustment. This range neither makes the counterweight adjustment too small in operable space due to too little oil, nor makes the counterweight 4 too heavy or the center of gravity too concentrated due to too much oil, which affects the sensitive response of the counterweight 4 to the oil level change when it works with the buoyant member 5. Keeping the volume of the oil in the oil distribution cavity 403 between one third and one half helps to maintain the relative stability of the center of gravity of the counterweight 4. During the normal operation of the oil level gauge, especially in complex working conditions such as the shaking of the oil in the tank and the vibration of the equipment, a stable center of gravity is crucial for the stable operation of the entire oil level gauge system. If the volume of the oil is too small, the center of gravity of the counterweight 4 may fluctuate greatly due to uneven distribution of the oil or be easily affected by external small disturbances; on the contrary, if the volume of the oil is too large, the center of gravity of the entire counterweight 4 relies too much on the oil part, which is also easy to lose balance when shaking or vibrating. Within this reasonable volume range, the oil can be relatively evenly distributed in the oil distribution cavity 403, so that the center of gravity of the counterweight 4 can remain in a relatively stable state under various working conditions, thereby ensuring that the connecting member 3, the buoyant member 5 and other related components can accurately perceive the oil level change based on the current counterweight state, improving the reliability and stability of the oil level monitoring, and reducing the risk of oil level misjudgment caused by external interference factors.
[0052] The counterweight 5 is internally filled with an appropriate amount of transformer oil, so that when the oil level rises, the buoyancy of the buoyant member 4 increases, and when the oil level drops, the effect of increasing the gravity received by the buoyant member 4 is achieved. The accuracy and sensitivity of the oil level gauge are improved.
[0053] Further, the counterweight 4 is at least one, and the counterweight 4 and the buoyant member 5 are the same shape and are both hollow spheres.
[0054] In this embodiment, the counterweight 4 is provided as at least one, which provides more flexibility and fineness for the counterweight adjustment of the oil level gauge. Different use scenarios, such as different specifications of oil tanks, different densities of oil products or different equipment operating conditions, have different requirements for the sensitivity of the oil level gauge. By increasing or decreasing the number of counterweights 4 and adjusting the internal counterweight liquid 402 of each counterweight 4, if there is an oil distribution cavity design, etc., a more detailed and diversified counterweight combination can be achieved, thereby accurately changing the response sensitivity of the oil level gauge to the oil level change.
[0055] Moreover, the plurality of counterweights 4 can cooperate with each other, and their distribution and relative positions on the connecting piece 3 can be adjusted according to actual needs to achieve the best counterbalance effect, and work together with the buoyant piece 5 to more accurately reflect the actual height of the oil level, greatly improving the accuracy of oil level monitoring and reducing the probability of transformer damage.
[0056] The counterweight 4 and the buoyant piece 5 are hollow spheres with the same shape, which makes them better cooperate with each other in response to the change of the oil level in the oil tank. The shape of the hollow sphere has good buoyancy and flow performance in the oil, whether the buoyant piece 5 changes the buoyancy state as the oil level rises or falls, or the counterweight 4 adjusts the position and force based on its own counterweight. Because of the same shape, the motion and force change of the two are more similar and synchronous. When the oil level changes, they can more coordinatedly conduct the change of force through the connecting piece 3, so that the entire oil level gauge system can quickly and accurately adjust its posture according to the slight fluctuation of the oil level, further improving the accuracy and sensitivity of oil level monitoring, and avoiding the situation that the uncoordinated motion or uneven force caused by the shape difference affects the oil level judgment.
[0057] Further, the alarm switch 2 has a swing groove 201, and the connecting piece 3 is swingingly arranged in the swing groove 201. The swing groove 201 has electromagnets on the upper and lower sides. After the connecting piece 3 abuts against the electromagnets, the alarm switch 2 alarms.
[0058] In this embodiment, the alarm switch 2 is provided with the swing groove 201, so that the connecting piece 3 can be swingingly arranged therein, which provides a precise mechanical structure basis for triggering the alarm when the oil level changes. When the oil level changes, the buoyant piece 5, the counterweight 4 and the connecting piece 3 will make corresponding actions, so that the connecting piece 3 swings in the swing groove 201. When the connecting piece 3 swings to a specific position, that is, abuts against the electromagnets on the upper and lower sides of the swing groove 201, the alarm switch 2 triggers the alarm. This triggering mechanism based on the swing angle and position of the connecting piece 3 can effectively avoid false alarms caused by slight fluctuations of the oil, slight vibration of the equipment and other non-essential abnormal conditions of the oil level, and ensure that the alarm is only triggered when the oil level is truly out of the normal range and the connecting piece 3 reaches the corresponding triggering position, greatly improving the accuracy of the alarm and providing accurate and reliable oil level abnormal information for the operator to take corresponding measures in time and ensure the safe operation of the oil equipment.
[0059] The electromagnets arranged on the two sides of the swing groove 201 are key components for triggering the alarm, and have the advantage of fast response speed. Once the connecting piece 3 abuts against the electromagnets after swinging into position, the electromagnets can quickly generate electromagnetic action to make the alarm switch 2 immediately start the alarm function and timely convey the signal of oil level abnormality to the operator.
[0060] Further, the buoyant member 5 has a connecting column 501 which is threadedly connected with the connecting member 3.
[0061] In the embodiment, the buoyant member 5 is threadedly connected with the connecting member 3 through the connecting column 501, so that a very stable connecting structure can be formed. In the actual use of the oil level meter, the oil in the oil tank will be constantly shaken, and the equipment may also be vibrated, and the like. The stable connection is very important for ensuring that the buoyant member 5 can accurately follow the change of the oil level and work cooperatively with other components. The thread connection relies on the friction between the threads and the mechanical structure of mutual engagement, so that the buoyant member 5 is tightly connected with the connecting member 3, and the phenomenon that the buoyant member 5 is easily detached from the connecting member 3 or loosened and displaced due to external interference factors such as the impact force of the oil and the vibration of the equipment is effectively avoided, so that the integrity of the entire oil level meter system is ensured, the accuracy and reliability of the monitoring of the change of the oil level are maintained, and the risk of the oil level monitoring error caused by unstable connection is reduced.
[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and all of them should be covered in the scope of the claims of the present application.
Claims
1. A high-precision pendulum rod oil level gauge, characterized by, The utility model relates to an oil tank alarm device, comprising: an oil tank (1) having an oil cavity (101), an alarm switch (2) arranged on the tank wall of the oil tank (1) and penetrating the tank wall of the oil tank (1) to extend into the oil cavity (101), a connecting piece (3) swingably arranged on the alarm switch (2) and located in the oil cavity (101), the connecting piece (3) triggering the alarm switch (2) to alarm after swinging, a buoyancy piece (5) arranged at one end of the connecting piece (3) away from the alarm switch (2), a counterweight piece (4) arranged on the connecting piece (3) and located between the buoyancy piece (5) and the alarm switch (2).
2. A high accuracy swing lever oil level gauge according to claim 1, wherein The counterweight piece (4) has a counterweight cavity (403) for containing a counterweight liquid (402).
3. A high accuracy swing lever oil level gauge according to claim 2, wherein The counterweight liquid (402) has the same density as or is the same oil liquid as the oil liquid in the oil cavity (101).
4. A high accuracy swing lever oil level gauge according to claim 3, wherein The volume of the oil liquid in the counterweight cavity (403) is one-third to one-half of the volume of the counterweight cavity (403).
5. A high accuracy swing lever oil level gauge as claimed in claim 1 wherein, The counterweight piece (4) is at least one, the counterweight piece (4) has the same shape as the buoyancy piece (5) and is a hollow sphere.
6. A high accuracy swing lever oil level gauge as claimed in claim 1 wherein, The alarm switch (2) has a swing groove (201), the connecting piece (3) is swingably arranged in the swing groove (201), the swing groove (201) has an electromagnet on both the upper side and the lower side, and the alarm switch (2) alarms after the connecting piece (3) abuts against the electromagnet.
7. A high accuracy swing lever oil level gauge as claimed in claim 1 wherein, The buoyancy piece (5) has a connecting column (501) threadedly connected with the connecting piece (3).