High-pressure oil level measuring sensor structure

Abstract

The utility model relates to an oil level measuring sensor, in particular to a high-pressure oil level measuring sensor structure. Comprising an oil tank and an oil level sensor arranged at the top of the oil tank, a mounting groove is formed in the upper side wall of the oil tank, the oil level sensor comprises a sensor body, the sensor body comprises a sleeve embedded in the mounting groove, a convex ring is coaxially fixed to the circumferential side wall of the sleeve, and a rubber ring is coaxially fixed to the lower side wall of the convex ring. The lower side wall of the rubber ring makes contact with the upper side wall of the oil tank, the oil level sensor further comprises a limiting mechanism, and the limiting mechanism comprises an assembling ring which is coaxially arranged on the outer side of the protruding ring and fixed to the upper side wall of the oil tank. According to the liquid level detection device, after the rotating mechanism drives the abutting rods to rotate out of the position over the protruding ring, a worker can pull out the whole sensor body from the interior of the oil tank, the purpose of rapidly detaching the sensor body from the oil tank is achieved, and the worker can conveniently clean solid impurities in the liquid level detection cavity.

Description

Technical Field

[0001] This utility model relates to an oil level measuring sensor, specifically, to a high-pressure oil level measuring sensor structure. Background Technology

[0002] High-pressure oil tanks are used for crude oil storage, chemical raw material blending, and product storage. They are usually cylindrical in shape, and oil level sensors are installed on the top of the tank to detect the oil level inside.

[0003] Existing oil level measurement sensors include capacitive level sensors, which have an internal level detection chamber for oil to enter. The oil level height inside the level detection chamber changes the capacitance of the capacitive level sensor. By measuring the change in capacitance of the capacitive level sensor, the oil level height inside the oil tank can be obtained.

[0004] However, when the oil inside the tank contains floating solid impurities such as oil cake, meal, and straw fibers, these impurities can enter the level detection chamber. Excessive accumulation of solid impurities can clog the chamber, preventing oil from freely entering and causing a difference in oil level between the detection chamber and other locations within the tank. This results in the capacitive level sensor failing to accurately detect the oil level. Therefore, after each loading of such oil, workers must remove the capacitive level sensor from the tank to clean the solid impurities from the detection chamber. In some technologies, capacitive level sensors are installed on oil tanks using a screw and nut assembly. Workers need to tighten multiple screws when installing and removing these sensors, which is time-consuming and inconvenient for cleaning the level detection chamber. Furthermore, the repeated tightening of the screws accelerates wear on the screw threads, making them prone to stripping. Once stripped, a slight displacement occurs between the screw and nut, preventing the capacitive level sensor from being securely installed on the oil tank. This compromises the seal between the hydraulic sensor and the tank, leading to oil leakage. Utility Model Content

[0005] The purpose of this invention is to provide a high-pressure oil level measurement sensor structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a high-pressure oil level measuring sensor structure, including an oil tank and an oil level sensor mounted on the top of the oil tank. The upper sidewall of the oil tank has an installation groove. The oil level sensor includes a sensor body, which includes a sleeve inserted into the installation groove. A convex ring is coaxially fixed to the circumferential sidewall of the sleeve, and a rubber ring is coaxially fixed to the lower sidewall of the convex ring. The lower sidewall of the rubber ring contacts the upper sidewall of the oil tank. The oil level sensor also includes a limiting mechanism, which includes an assembly ring coaxially mounted outside the convex ring and fixed to the upper sidewall of the oil tank. A plurality of half-gears are rotatably arranged in a circular array on the upper sidewall of the assembly ring. A rotating plate is horizontally fixed to the side of each half-gear near the convex ring. A rotating mechanism is provided on the assembly ring to drive the plurality of half-gears to rotate synchronously. When the rotating mechanism drives the other end of the rotating plate to rotate above the convex ring, the limiting mechanism presses the convex ring towards the oil tank.

[0007] As a further improvement to this technical solution, a number of positioning rods are fixed in a ring array around the mounting groove on the upper side wall of the oil tank. Positioning grooves are opened on the convex ring and rubber ring at positions corresponding to each positioning rod, and the number of positioning rods are respectively movably inserted into the corresponding positioning grooves.

[0008] As a further improvement to this technical solution, a stop rod is vertically fixed on the lower side wall of the rotating plate near the axis of the convex ring, and a wedge block is fixed on the upper side wall of the convex ring at the position corresponding to each stop rod. The side of the wedge block near the corresponding stop rod is set as an inclined surface. When the rotating plate drives the stop rod to rotate above the convex ring, the lower end of the stop rod slides into contact with the inclined surface of the corresponding wedge block.

[0009] As a further improvement to this technical solution, the rotating mechanism includes an internal gear coaxially rotatably disposed on the upper side wall of the assembly ring, and several half gears mesh with the internal gear, wherein the half gears are disposed inside the internal gear.

[0010] As a further improvement to this technical solution, the rotating mechanism also includes a worm gear coaxially fixedly mounted on the upper side wall of one of the half gears, and a worm is meshed with one side of the worm gear, the worm being rotatably mounted on the upper side wall of the assembly ring.

[0011] As a further improvement to this technical solution, a central rod is coaxially arranged inside the sleeve. The lower end face of the central rod and the lower end face of the sleeve are fixedly connected by a bottom support. A top support is threaded to the upper end of the sleeve. A glass plate is fixedly arranged inside the top support. Two electrode rods are fixedly arranged on the glass plate. The lower end of the electrode rod extends to the bottom of the glass plate and is fixed with a welding lead wire. The other ends of the two welding leads are fixedly connected to the central rod and the upper side wall of the sleeve, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The high-pressure oil level measuring sensor structure, after the rotating mechanism drives the other end of several rotating plates to rotate above the convex ring, the push rod presses the wedge block and the convex ring towards the oil tank, thereby quickly fixing the sensor body on the oil tank. At the same time, the convex ring cooperates with the oil tank to squeeze the rubber ring, which enhances the sealing between the convex ring and the upper side wall of the oil tank, preventing the oil inside the oil tank from leaking through the installation groove, and improving the safety of the oil tank after the sensor body is installed.

[0014] 2. The structure of this high-pressure oil level measuring sensor allows the worker to pull the sensor body out of the oil tank after the rotating mechanism drives several push rods to rotate out from directly above the convex ring. This achieves the purpose of quickly separating the sensor body from the oil tank, making it convenient for workers to clean solid impurities inside the liquid level detection chamber. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the oil tank of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the oil level sensor of this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the sensor body of this utility model;

[0020] Figure 6 This is a cross-sectional view of the sensor body of this utility model;

[0021] Figure 7 For the present utility model Figure 6 Enlarged view of the structure at point A in the middle;

[0022] Figure 8 This is a schematic diagram of the overall structure of this utility model and the structure after the protective cover is combined.

[0023] The meanings of the labels in the diagram are as follows:

[0024] 1. Oil level sensor;

[0025] 11. Sensor body; 111. Sleeve; 112. Convex ring; 113. Rubber ring; 114. Wedge; 115. Center rod; 116. Base support; 117. Top support; 118. Glass plate; 119. Electrode rod; 1191. Welding lead wire;

[0026] 12. Limiting mechanism; 121. Assembly ring; 122. Rotating plate; 123. Support rod; 124. Half gear; 125. Internal gear; 126. Worm gear; 127. Worm;

[0027] 2. Oil tank; 21. Mounting groove; 22. Positioning rod; 23. Protective cover. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, one of the objectives of this embodiment is to provide a high-pressure oil level measurement sensor structure, including an oil tank 2 and an oil level sensor 1 disposed on the top of the oil tank 2. An installation groove 21 is provided on the upper side wall of the oil tank 2. The oil level sensor 1 includes a sensor body 11, which includes a sleeve 111 inserted into the installation groove 21. The lower end of the sleeve 111 extends into the interior of the oil tank 2. A central rod 115 is coaxially disposed inside the sleeve 111. The core rod 115 is made of stainless steel. A liquid level detection chamber is set between the outer circumference of the core rod 115 and the inner circumference of the sleeve 111. The lower end face of the core rod 115 and the lower end face of the sleeve 111 are fixedly connected by the base support 116. Several rings are coaxially fixed on the circumferential side wall of the core rod 115. The circumferential side wall of the rings contacts the inner circumferential wall of the sleeve 111. The rings are used to position the core rod 115, thereby stabilizing the core rod 115 on the sleeve 111. In position 1, both the base 116 and the ring are made of non-conductive engineering plastic, and several through slots are provided on both the base 116 and the ring. When oil is stored inside the oil tank 2, the oil can enter the liquid level detection chamber through the through slots on the base 116 and the ring. At the same time, a top support 117 is threadedly connected to the upper end of the sleeve 111. A glass plate 118 is fixedly installed inside the top support 117. Two electrode rods 119 are fixedly installed on the glass plate 118. The lower end of the electrode rods 119 extends below the glass plate 118 and is fixedly connected to welding leads 1191. The other ends of the two welding leads 1191 are fixedly connected to the center rod 115 and the upper side wall of the sleeve 111, respectively. The two electrode rods 119 are electrically connected to the external capacitance measuring device. The top support 117 is located above the oil tank 2, thereby isolating the internal space of the oil tank 2 from the external measuring device, ensuring that the oil tank 2 has good sealing performance, and ensuring that the external measuring device can be used normally.

[0031] When the oil inside tank 2 enters the liquid level detection chamber, the oil becomes a conductive medium, connecting the sleeve 111 and the central rod 115. At this time, the sensor body 11 becomes a capacitor, and the sleeve 111 and the central rod 115 are equivalent to the two electrodes of the capacitor. When the oil level inside the liquid level detection chamber changes, the capacitance value of the electrodes changes. The worker can obtain the oil level inside the liquid level detection chamber by measuring the change in capacitance using a capacitance measuring device. Since the air pressure inside tank 2 is greater than atmospheric pressure, the air inside tank 2 can force the oil into the liquid level detection chamber. Therefore, the oil level inside the liquid level detection chamber is the same as the oil level inside tank 2. The worker can indirectly measure the oil level inside tank 2 by measuring the oil level inside the liquid level detection chamber.

[0032] In order to fix the sensor body 11 on the oil tank 2, refer to Figure 5A convex ring 112 is coaxially fixed to the circumferential side wall of the sleeve 111, and a rubber ring 113 is coaxially fixed to the lower side wall of the convex ring 112. The lower side wall of the rubber ring 113 contacts the upper side wall of the oil tank 2. (Refer to...) Figure 3 and Figure 4 The oil level sensor 1 also includes a limiting mechanism 12. The limiting mechanism 12 includes an assembly ring 121 coaxially disposed outside the convex ring 112 and fixed to the upper side wall of the oil tank 2. A number of half gears 124 are rotatably arranged in an annular array on the upper side wall of the assembly ring 121. A rotating plate 122 is horizontally fixed on the side of the half gear 124 near the convex ring 112. A rotating mechanism is provided on the assembly ring 121 for driving the several half gears 124 to rotate synchronously. When the half gears 124 rotate, they will drive the corresponding rotating plates 122 to rotate synchronously. When the rotating mechanism drives the other end of the rotating plate 122 to rotate above the convex ring 112, the limiting mechanism 12 presses the convex ring 112 towards the oil tank 2, thereby limiting the upward movement of the convex ring 112 and improving the stability of the sleeve 111 installation.

[0033] Several positioning rods 22 are fixed in a circular array around the mounting groove 21 on the upper side wall of the oil tank 2. Positioning grooves are provided on the convex ring 112 and rubber ring 113 at positions corresponding to each positioning rod 22. The positioning rods 22 are movably inserted into their respective positioning grooves. Through the cooperation of the positioning rods 22 and the positioning grooves, the sensor body 11 cannot rotate on the oil tank 2. Simultaneously, a stop rod 123 is vertically fixed on the lower side wall of the rotating plate 122 near the axis of the convex ring 112. A wedge block 114 is fixed on the upper side wall of the convex ring 112 at positions corresponding to each stop rod 123. The side of the wedge block 114 closest to the corresponding stop rod 123 is set as an inclined surface. When the rotating plate 122 drives the stop rod 123 to rotate above the convex ring 112, the lower end of the stop rod 123 slides into contact with the inclined surface of the corresponding wedge block 114. After the lower end of the rotating abutment 123 slides into contact with the inclined surface of the corresponding wedge 114, the wedge 114 will not move horizontally due to the cooperation between the positioning rod 22 and the positioning groove. When the abutment 123 and the wedge 114 are in contact, the abutment 123 will slide from the lower part of the inclined surface of the wedge 114 to the higher part. During this process, the height of the abutment 123 will not change, and the abutment 123 will press the wedge 114 and the convex ring 112 downward, so that the convex ring 112 and the oil tank 2 are in close contact, improving the stability of the installation between the oil tank 2 and the sensor body 11. At the same time, during the downward movement of the convex ring 112, the convex ring 112 will squeeze the rubber ring 113, causing the rubber ring 113 to undergo elastic deformation. In this way, the installation sealing of the sensor body 11 is enhanced by the rubber ring 113, so that the oil tank 2 can maintain a high pressure state.

[0034] The structure of the rotating mechanism is detailed below, referring to... Figure 4The rotating mechanism includes an internal gear 125 coaxially rotatably mounted on the upper side wall of the assembly ring 121, and several half gears 124 meshing with the internal gear 125. The half gears 124 are located inside the internal gear 125. The rotating mechanism also includes a worm gear 126 coaxially fixed on the upper side wall of one of the half gears 124. A worm 127 is meshed with one side of the worm gear 126 and rotatably mounted on the upper side wall of the assembly ring 121. A knob is coaxially fixed to one end of the worm 127. When the worker rotates the worm 127 by rotating the knob, the meshing transmission between the worm 127 and the worm gear 126 causes the worm gear 126 to drive one of the half gears 124 to rotate. This half gear 124, through meshing transmission with the internal gear 125, drives the internal gear 125 to rotate, which in turn causes the internal gear 125 to drive the remaining half gears 124 to rotate. At this time, several half gears 124 rotate synchronously. The rotating half gears 124 drive the corresponding rotating plates 122 to rotate above the convex ring 112 until the lower end of the push rod 123 contacts the inclined surface of the corresponding wedge block 114. The push rod 123 then presses the wedge block 114 downward, thus fixing the sensor body 11 on the oil tank 2 to measure the liquid level of the oil. At the same time, the self-locking property of the meshing transmission of the worm gear 127 and the worm wheel 126 prevents the rotating plate 122 and the push rod 123 from rotating without human intervention. The push rod 123 can maintain the long-term positioning of the wedge block 114 and the convex ring 112. After the convex ring 112 and the oil tank 2 compress and deform the rubber ring 113, it prevents the rubber ring 113 from rebounding and lifting the convex ring 112 upward, thus enhancing the sealing of the sensor body 11.

[0035] When using this oil level measurement sensor, refer to... Figure 8 A protective cover 23 is fixedly installed on the upper side wall of the oil tank 2 by bolts. The protective cover 23 covers the outside of the rotating mechanism. The protective cover 23 protects the internal gear 125 and the half gear 124, preventing them from being damaged by hard objects. It also prevents solid impurities from getting stuck at the meshing position of the internal gear 125 and the half gear 124, ensuring the normal use of the rotating components. During the process of putting the sensor body 11 into the oil tank 2, the protective cover 23 will not obstruct the insertion of the sensor body 11.

[0036] When there are floating solid impurities such as oil cake, meal, and straw fibers in the oil inside oil tank 2, these impurities may enter the liquid level detection chamber. Excessive accumulation of solid impurities in the liquid level detection chamber can easily clog it, preventing oil from freely entering. This results in a difference between the oil level inside the detection chamber and the oil level in other parts of oil tank 2, causing the sensor body 11 to be unable to accurately detect the liquid level inside oil tank 2. To solve this problem, after the oil in oil tank 2 is drained, workers need to remove the sensor body 11 from oil tank 2 and clean out the solid impurities inside the liquid level detection chamber. The steps for removing the sensor body 11 are as follows: First, rotate the worm gear 127 in reverse to cause several rotating plates 122 to drive the corresponding... The rod 123 rotates out from directly above the convex ring 112, and then the sensor body 11 is pulled out from the inside of the oil tank 2, so that the positioning rod 22 is disengaged from the convex ring 112 and the rubber ring 113, and the sleeve 111 is disengaged from the mounting groove 21. The sensor body 11 can then be separated from the oil tank 2, making it easier for workers to clean solid impurities inside the liquid level detection chamber. The sensor body 11 is installed by pressing the convex ring 112 with the rod 123. Compared with the traditional method of installing the sensor body 11 using screws and nuts, the worker does not need to tighten multiple screws one by one during the disassembly process of the sensor body 11, which improves the speed of the worker's disassembly and assembly of the sensor body 11. It also avoids the problem of the screw stripping after repeated tightening, which would reduce the installation stability of the sensor body 11, and ensures the sealing of the inside of the oil tank 2.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-pressure oil level measuring sensor structure, comprising an oil tank (2) and an oil level sensor (1) arranged on the top of the oil tank (2), wherein an upper side wall of the oil tank (2) is provided with a mounting groove (21), and the oil level sensor (1) comprises a sensor main body (11), and the sensor main body (11) comprises a sleeve (111) inserted into the mounting groove (21), characterized in that: A convex ring (112) is coaxially fixed to the circumferential sidewall of the sleeve (111), and a rubber ring (113) is coaxially fixed to the lower sidewall of the convex ring (112). The lower sidewall of the rubber ring (113) contacts the upper sidewall of the oil tank (2). The oil level sensor (1) also includes a limiting mechanism (12). The limiting mechanism (12) includes an assembly ring (121) coaxially disposed outside the convex ring (112) and fixed to the upper sidewall of the oil tank (2). The upper sidewall of the ) is rotatably arranged with a number of half gears (124). A rotating plate (122) is horizontally fixed on the side of the half gear (124) near the convex ring (112). The assembly ring (121) is provided with a rotating mechanism for driving the number of half gears (124) to rotate synchronously. When the rotating mechanism drives the other end of the rotating plate (122) to rotate above the convex ring (112), the limiting mechanism (12) presses the convex ring (112) towards the oil tank (2).

2. The high pressure oil level measurement sensor structure of claim 1, wherein: The upper sidewall of the oil tank (2) is fixed with a number of positioning rods (22) in a ring array around the mounting groove (21). The convex ring (112) and the rubber ring (113) are provided with positioning grooves at positions corresponding to each positioning rod (22). The positioning rods (22) are respectively movably inserted into the corresponding positioning grooves.

3. The high-pressure oil level measuring sensor structure according to claim 1, characterized in that: A stop rod (123) is vertically fixed on the lower side wall of the rotating plate (122) near the axis of the convex ring (112). A wedge block (114) is fixed on the upper side wall of the convex ring (112) at a position corresponding to each stop rod (123). The side of the wedge block (114) near the corresponding stop rod (123) is set as an inclined surface. When the rotating plate (122) drives the stop rod (123) to rotate above the convex ring (112), the lower end of the stop rod (123) slides in contact with the inclined surface of the corresponding wedge block (114).

4. The high pressure oil level measurement sensor structure of claim 1, wherein: The rotating mechanism includes an internal gear (125) coaxially rotatably mounted on the upper side wall of the assembly ring (121), and several half gears (124) meshing with the internal gear (125), wherein the half gears (124) are located inside the internal gear (125).

5. The high pressure oil level measurement sensor structure of claim 4, wherein: The rotating mechanism also includes a worm gear (126) coaxially fixed on the upper side wall of one of the half gears (124), and a worm (127) is meshed on one side of the worm gear (126), and the worm (127) is rotatably mounted on the upper side wall of the assembly ring (121).

6. The high pressure oil level measurement sensor structure of claim 1, wherein: A central rod (115) is coaxially arranged inside the sleeve (111). The lower end face of the central rod (115) and the lower end face of the sleeve (111) are fixedly connected by a base support (116). A top support (117) is threadedly connected to the upper end of the sleeve (111). A glass plate (118) is fixedly arranged inside the top support (117). Two electrode rods (119) are fixedly arranged on the glass plate (118). The lower end of the electrode rod (119) extends below the glass plate (118) and is fixedly connected with a welding lead wire (1191). The other ends of the two welding leads wires (1191) are fixedly connected to the central rod (115) and the upper side wall of the sleeve (111), respectively.

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