Oil tank measuring thermometer

Abstract

The invention discloses an oil tank measuring thermometer which comprises a thermometer body, an operation panel, a waterproof hose, a touch display screen, an internal cavity, a control mother board, a module daughter board, a temperature measuring sensor, an insertion hole, an opening and closing structure, a positioning and locking child component and a positioning and locking mother component. Compared with the prior art, the oil tank thermometer has the following advantages and effects that the thermometer body is provided with a plurality of temperature measurement sensors, and the temperature measurement sensors are welded on the detachable module daughter board, so that layered temperature detection of different heights in an oil tank can be realized, and the detachability of the module daughter board enables maintenance and replacement work to be remarkably simplified; the operation cost can be greatly reduced; through full utilization of the module structure, the flexibility, reliability and economical efficiency of the oil tank temperature monitoring system are effectively improved, and a new solution is provided for liquid storage and management in petroleum and chemical industries.

Description

Technical Field

[0001] The invention relates to the technical field of oil tank monitoring, and in particular to an oil tank measuring thermometer. Background Art

[0002] In the modern petroleum and chemical industry, oil tanks are important containers for storing liquids, and their temperature monitoring is a key factor in ensuring safe operation and improving storage efficiency. The temperature of a liquid is often closely related to its physical and chemical properties. For example, temperature changes can affect the viscosity, density, and vapor pressure of the liquid, thereby affecting the safety and efficiency of the storage and handling process. Therefore, accurate and real-time monitoring of the temperature of the liquid in the oil tank is of great practical significance.

[0003] Existing oil tank temperature measurement technology usually uses single-point temperature measuring instruments, which generally only have one temperature sensor, usually located at a specific height of the oil tank. The limitation of this method is that it can only reflect the temperature of that specific location and cannot fully understand the distribution of the liquid temperature in the oil tank. Therefore, when the liquid flows, mixes, or causes a temperature gradient in the oil tank due to changes in the external environment, temperature changes may occur that are not captured by traditional thermometers. This single height measurement method is often not accurate and reliable enough, which may pose a hidden danger to the safe use of the oil tank.

[0004] With the development of science and technology, the accuracy and stability of temperature sensors have been significantly improved. However, due to the complex behavior of liquids in oil tanks, a single sensor still cannot adapt to the diverse requirements of oil tank liquid storage.

[0005] In addition, the maintenance and replacement of traditional temperature measuring devices is cumbersome. Once the temperature sensor fails, technicians often need to dismantle the entire temperature measuring device, which consumes a lot of time and manpower costs.

[0006] Secondly, the modular design of the temperature measuring device is not flexible enough. Since the connection between the temperature sensor and the control motherboard is not easy to disassemble, when performing regular inspections and calibrations, even if you just want to replace or maintain one of the multiple temperature sensors, you often need to consider the changes to the entire temperature measuring device. Such problems directly affect the reliability and measurement accuracy of the equipment, and also increase operating costs.

[0007] Therefore, there is an urgent need for a new type of oil tank measuring thermometer that can realize multi-point and multi-level temperature monitoring and has a simple and convenient maintenance structure to improve measurement efficiency and accuracy. In response to this demand, the present invention proposes an oil tank measuring thermometer. A plurality of temperature measuring sensors are arranged on the thermometer body and welded to a detachable module sub-board, which can not only realize the temperature layer detection at different heights in the oil tank, but also the detachability of the module sub-board significantly simplifies the maintenance and replacement work, which can greatly reduce the operating cost. By making full use of the module structure, the present invention effectively improves the flexibility, reliability and economy of the oil tank temperature monitoring system, and provides a new solution for liquid storage and management in the petroleum and chemical industries. Summary of the invention

[0008] The purpose of the present invention is to provide an oil tank measuring thermometer to solve the technical problems proposed in the background technology.

[0009] The above technical objectives of the present invention are achieved through the following technical solutions: An oil tank measuring thermometer comprises a thermometer body and an operation panel, wherein the thermometer body is connected to the operation panel through a waterproof hose, and a touch display screen is arranged on the operation panel; The thermometer body is provided with an internal chamber, in which a vertically long control motherboard is fixed by screws; at least three module sub-boards of different heights are detachably inserted in the internal chamber, and temperature sensors are welded on the three module sub-boards. After the three module sub-boards are inserted into the internal chamber, they can respectively control the motherboard to form an electrical connection; The side of the thermometer body is provided with insertion openings for inserting three module sub-boards into the internal chamber respectively, and the positions of the thermometer body corresponding to the three insertion openings are provided with opening and closing structures capable of opening or closing the corresponding insertion openings; Each of the module sub-boards is provided with a positioning locking sub-component, and three positioning locking mother components are provided inside the thermometer body. After any of the module sub-boards is inserted into the internal chamber and electrically connected to the control motherboard, the positioning locking sub-component on the module sub-board will lock the module sub-board by interfering with the corresponding positioning locking mother component; The positioning locking sub-component is a controlled structure, and the interference fit between the positioning locking sub-component and the corresponding positioning locking female component can be released by controlling the positioning locking sub-component.

[0010] Further configuration is: the right ends of the three module sub-boards are welded with sub-electrical seats, each of the sub-electrical seats is provided with a plurality of electrical pins extending toward the right side, the left end of the control motherboard is welded with three mother electrical seats, and each electrical pin on the three module sub-boards can be respectively inserted into the corresponding mother electrical seat to realize electrical connection; The three module daughter boards are all welded with sub-positioning platforms, and horizontal positioning holes are opened in the sub-positioning platforms. Three mother positioning platforms are welded on the left end of the control mother board, and each mother positioning platform is fixed with a positioning axis extending toward the left side. When any one of the module daughter boards is inserted into the internal cavity, it can be positioned based on the matching of the positioning hole and the corresponding positioning axis, so that each electrical needle can be inserted into the corresponding mother electrical socket respectively.

[0011] Further configuration is: the opening and closing structure includes an opening and closing main groove and an opening and closing sub-groove opened inside the thermometer body, the opening and closing main groove and the opening and closing sub-groove are respectively located above and below the corresponding insertion opening, the notch of the opening and closing main groove is located at its lower end, and the notch of the opening and closing sub-groove is located at its upper end; a sealing shaft capable of moving in a vertical direction is arranged in the opening and closing main groove, the sealing shaft maintains an initial state of partially extending downward from the notch of the opening and closing main groove and pressing against the bottom of the opening and closing sub-groove, and the sealing shaft maintains the closure of the insertion opening in the initial state; A first internal pressure spring is provided between the bottom of the main opening and closing groove and the sealing shaft to apply kinetic energy for the sealing shaft to continuously move downward; A limiting bottom block is fixedly arranged at the notch of the opening and closing main groove, and a limiting top block is fixedly arranged on the right side of the upper end of the sealing shaft. After the sealing shaft is pressed downward into the bottom of the opening and closing auxiliary groove, a space is provided between the limiting bottom block and the limiting top block to form an expansion space, and an inner hole connected to the expansion space is provided inside the thermometer body.

[0012] A further configuration is that three air inlet interfaces are arranged on the operation panel, and inner air pipes connected to the three air inlet interfaces are arranged inside the operation panel; the three inner air pipes are arranged in a waterproof hose and introduced into the interior of the thermometer body, and then connected to the inner holes in the three opening and closing structures respectively.

[0013] Further configuration is: the positioning locking sub-component comprises a positioning sub-seat welded on the module sub-plate, a horizontally penetrating positioning sub-hole is provided inside the positioning sub-seat, a first control shaft which can only move in the horizontal direction is limitedly provided in the positioning sub-hole, and a first controlled block is fixedly provided at the right end of the first control shaft; The positioning locking female component includes a positioning female seat fixed inside the thermometer body, a longitudinal positioning female groove is provided in the positioning female seat, the notch of the positioning female groove is located at the upper end thereof, an active locking block that can only move in the vertical direction is provided in the positioning female groove, and a second internal pressure spring that continuously applies kinetic energy to the active locking block to move upward is also provided in the positioning female groove; the right side of the active locking block and the left side of the first controlled block are both configured as straight surfaces extending in the vertical direction, and the module sub-board is locked based on the interference of the two straight surfaces on the active locking block and the first controlled block to prevent the module sub-board from falling off; A first limiting section is fixedly provided on the left wall of the notch of the positioning female groove, and a second limiting section is fixedly provided on the lower end of the left side of the active locking block, and the active locking block is limited based on the interference between the first limiting section and the second limiting section.

[0014] A further configuration is that: the lower end of the right side of the first controlled block has an inclined first guide surface, and the upper end of the left side of the active locking block has an inclined second guide surface; when the first control shaft is forced to move rightward, the first controlled block can squeeze the active locking block open, and then smoothly move to the right side of the active locking block.

[0015] Further configuration is: a second control shaft which can only move in the horizontal direction is also limitedly arranged in the positioning sub-hole, a second controlled block is fixedly arranged at the right end of the second control shaft, the second controlled block is located on the left side of the first controlled block, and a through hole is opened inside the second controlled block for the first controlled block to pass through; The positioning sub-base is fixedly provided with a load block located on the right side of the positioning sub-hole, and a third internal pressure spring is compressed between the first controlled block and the load block, and the third internal pressure spring applies kinetic energy for the first controlled block to continuously move leftward, and the two ends of the third internal pressure spring are respectively fixed on the first controlled block and the load block; The lower end of the left side of the second controlled block has an inclined third guide surface, and the right side of the second controlled block is configured as a straight surface extending in the vertical direction. After the second control axis is forced to move right, the second controlled block can squeeze the active locking block open and form a straight surface to the first controlled block. Then, the first controlled block will smoothly move to the left side of the active locking block under the kinetic energy continuously applied by the third internal pressure spring.

[0016] A further configuration is that a limiting filling block is fixedly provided on the upper wall of the positioning sub-hole, the second control shaft is located below the limiting filling block and is in contact with it, the first control shaft is located below the second control shaft and is respectively in contact with the second control shaft and the lower wall of the positioning sub-hole; the upper end of the second controlled block is in contact with the upper wall of the positioning sub-hole, and the second controlled block can interfere with the limiting filling block to limit the second controlled block.

[0017] A further configuration is that the temperature sensor is vertically welded to the corresponding module sub-board, a flexible thermal pad is fixedly arranged on the top of the temperature sensor, and after any one of the module sub-boards is inserted into the internal cavity and forms an electrical connection with the control motherboard, the flexible thermal pad on the top of the temperature sensor on the module sub-board will contact the inner wall of the thermometer body.

[0018] The present invention has the following beneficial effects: 1. In the present invention, three module sub-boards are provided for individual temperature sensor welding, and the three module sub-boards can be plugged with the control motherboard to form an electrical connection; in this way, when one of the temperature sensors is damaged or needs regular inspection and calibration, it is only necessary to remove the corresponding module sub-board separately, which will not affect the electronic components on the control motherboard, and the electronic components on the control motherboard will not be damaged or damaged by static electricity due to contact, thereby extending the life of the control motherboard. At the same time, the three module sub-boards are inserted into the internal chamber at different heights, so as to realize temperature stratification detection at different heights in the oil tank and improve the accuracy of detection. The setting of the positioning locking sub-component and the positioning locking mother component can lock the corresponding module sub-board through interference cooperation, prevent the module sub-board from falling off, and improve reliability and stability.

[0019] 2. In the present invention, the electrical needle can be inserted into the mother electrical socket to realize the electrical connection between the corresponding module sub-board and the mother electrical socket; the setting of the positioning shaft and the positioning hole can not only limit the module sub-board to prevent it from falling down, but also realize alignment, so that each electrical needle can be accurately inserted into the mother electrical socket.

[0020] 3. In order to improve the sealing performance and prevent oil from penetrating into the thermometer body, a sealing shaft is provided in the present invention. The sealing shaft is provided in the main opening and closing groove, and the kinetic energy applied by the first internal pressure spring is used to push the sealing shaft downward, so that the sealing shaft is pressed against the bottom of the opening and closing secondary groove, and the plug-in opening is kept closed to prevent oil from penetrating. The expansion space between the bottom block and the limiting top block can receive the gas sent from the inner hole, and then push the limiting top block and the sealing shaft upward to achieve the purpose of opening the plug-in opening, so that the operator can install or remove the module sub-board.

[0021] 4. In the present invention, three air inlet interfaces are provided on the operation panel to respectively feed gas into the inner holes in the three opening and closing structures.

[0022] 5. In the present invention, the module sub-board is locked based on the interference between the two straight surfaces on the active locking block and the first controlled block to prevent the module sub-board from falling off; the setting of the first control axis can facilitate the operator's fingers to press and push the first controlled axis to move right, so that the first controlled block can move to the right side of the active locking block, and then the two straight surfaces on the active locking block and the first controlled block can interfere with each other; the first limiting segment and the second limiting segment can limit the active locking block through interference.

[0023] 6. In the present invention, the arrangement of the first guide surface and the second guide surface enables the first controlled block to squeeze the active locking block when the first control axis is forced to move rightward, and then smoothly move to the right side of the active locking block.

[0024] 7. In the present invention, the setting of the perforation can allow the first controlled block to pass through; the setting of the third internal pressure spring can continuously apply kinetic energy of leftward movement to the first controlled block; the setting of the second control shaft can facilitate the operator's fingers to press and push the second controlled shaft to move right; after the second control shaft moves to the right, the second controlled block can squeeze the active locking block open and form a straight surface to the first controlled block, and then the first controlled block will smoothly move to the left side of the active locking block under the kinetic energy continuously applied by the third internal pressure spring, thereby releasing the interference fit.

[0025] 8. In the present invention, the purpose of limiting the second controlled block is achieved by setting a limiting filling block to interfere with the second controlled block.

[0026] 9. In the present invention, the flexible thermally conductive pad can contact the inner wall of the thermometer body, thereby improving the accuracy of temperature detection based on contact heat conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 A partial cross-sectional view of the interior of the thermometer body in the embodiment; Figure 3 for Figure 2 Enlarged view of part A in the middle; Figure 4 for Figure 3 Enlarged view of part B in the middle.

[0028] In the figure: 11, thermometer body; 12, operation panel; 121, touch screen; 122, air inlet interface; 13, waterproof hose; 14, plug-in opening; 21, internal chamber; 22, control motherboard; 31, module sub-board; 32, temperature sensor; 321, flexible thermal pad; 33, sub-electrical seat; 331, electrical needle; 34, mother electrical seat; 41, sub-positioning platform; 411, positioning hole; 42, mother positioning platform; 43, positioning shaft; 51, opening and closing main groove; 52, opening and closing auxiliary groove; 53, sealing shaft; 54, first internal pressure spring; 55, limiting bottom Block; 56, limiting top block; 57, expansion space; 58, inner hole; 60, positioning sub-seat; 601, positioning sub-hole; 61, first control axis; 62, first controlled block; 621, first guide surface; 71, positioning mother seat; 72, positioning mother groove; 73, active locking block; 731, second guide surface; 74, second internal pressure spring; 751, first limiting section; 752, second limiting section; 81, second control axis; 82, second controlled block; 821, perforation; 822, third guide surface; 83, limiting filling block; 91, load block; 92, third internal pressure spring. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] As attached Figures 1 to 4 As shown; This embodiment discloses an oil tank measuring thermometer, comprising a thermometer body 11 and an operation panel 12. The thermometer body 11 is connected to the operation panel 12 through a waterproof hose 13. The operation panel 12 is provided with a touch screen 121. An internal chamber 21 is provided inside the thermometer body 11, and a vertically long control motherboard 22 is fixedly arranged in the internal chamber 21 by screws. The control motherboard 22 and the touch display screen 121 are connected by wires located in the waterproof hose 13; at least three module sub-boards 31 of different heights are detachably inserted in the internal chamber 21, and temperature sensors 32 are welded on the three module sub-boards 31. After the three module sub-boards 31 are inserted into the internal chamber 21, they can respectively control the motherboard 22 to form an electrical connection; The thermometer body 11 has insertion openings 14 on the side thereof for inserting the three module sub-boards 31 into the internal chamber 21 , and the positions of the thermometer body 11 corresponding to the three insertion openings 14 are all provided with opening and closing structures capable of opening or closing the corresponding insertion openings 14 ; Each module sub-board 31 is provided with a positioning locking sub-component, and three positioning locking mother components are provided inside the thermometer body 11. After any module sub-board 31 is inserted into the internal chamber 21 and forms an electrical connection with the control motherboard 22, the positioning locking sub-component on the module sub-board 31 will lock the module sub-board 31 by interfering with the corresponding positioning locking mother component; The positioning locking sub-component is a controlled structure, and the interference fit between the positioning locking sub-component and the corresponding positioning locking mother component can be released by controlling the positioning locking sub-component.

[0031] Among them, the right ends of the three module sub-boards 31 are welded with sub-electrical seats 33, and each sub-electrical seat 33 is provided with a plurality of electrical pins 331 extending toward the right side. The left end of the control motherboard 22 is welded with three mother electrical seats 34, and each electrical pin 331 on the three module sub-boards 31 can be respectively inserted into the corresponding mother electrical seat 34 to realize electrical connection; Sub-positioning platforms 41 are welded on the three module sub-boards 31, and horizontal positioning holes 411 are opened in the sub-positioning platforms 41. Three mother positioning platforms 42 are welded on the left end of the control motherboard 22. Each mother positioning platform 42 is fixed with a positioning shaft 43 extending toward the left side. When any module sub-board 31 is inserted into the internal cavity 21, it can be positioned based on the mating of the positioning hole 411 and the corresponding positioning shaft 43, so that each electrical needle 331 can be inserted into the corresponding mother electrical socket 34 respectively.

[0032] The opening and closing structure includes an opening and closing main groove 51 and an opening and closing sub-groove 52 provided inside the thermometer body 11. The opening and closing main groove 51 and the opening and closing sub-groove 52 are respectively located above and below the corresponding insertion opening 14. The notch of the opening and closing main groove 51 is located at its lower end, and the notch of the opening and closing sub-groove 52 is located at its upper end. A sealing shaft 53 capable of moving in the vertical direction is provided in the opening and closing main groove 51. The sealing shaft 53 maintains an initial state of partially extending downward from the notch of the opening and closing main groove 51 and pressing against the bottom of the opening and closing sub-groove 52. The sealing shaft 53 maintains the closure of the insertion opening 14 in the initial state. A first internal pressure spring 54 is provided between the bottom of the main opening and closing groove 51 and the sealing shaft 53 to apply kinetic energy for the sealing shaft 53 to continuously move downward; A limiting bottom block 55 is fixedly provided at the notch of the opening and closing main groove 51, and a limiting top block 56 is fixedly provided on the right side of the upper end of the sealing shaft 53. After the sealing shaft 53 is pressed downward into the bottom of the opening and closing auxiliary groove 52, a space is provided between the limiting bottom block 55 and the limiting top block 56 to form an expansion space 57, and an inner hole 58 connected to the expansion space 57 is provided inside the thermometer body 11.

[0033] Among them, three air inlet interfaces 122 are arranged on the operation panel 12, and internal air pipes respectively connected to the three air inlet interfaces 122 are arranged inside the operation panel 12. The three internal air pipes are arranged in the waterproof hose 13 and introduced into the interior of the thermometer body 11, and are respectively connected to the inner holes 58 in the three opening and closing structures.

[0034] The positioning and locking sub-component includes a positioning sub-base 60 welded on the module sub-plate 31, and a horizontally penetrating positioning sub-hole 601 is opened inside the positioning sub-base 60. A first control shaft 61 that can only move in the horizontal direction is limitedly set in the positioning sub-hole 601, and a first controlled block 62 is fixedly set at the right end of the first control shaft 61; The positioning locking female component includes a positioning female seat 71 fixed inside the thermometer body 11, a longitudinal positioning female groove 72 is provided in the positioning female seat 71, the notch of the positioning female groove 72 is located at the upper end thereof, an active locking block 73 that can only move in the vertical direction is provided in the positioning female groove 72, and a second internal pressure spring 74 that continuously applies kinetic energy to the active locking block 73 to move upward is also provided in the positioning female groove 72; the right side of the active locking block 73 and the left side of the first controlled block 62 are both configured as straight surfaces extending in the vertical direction, and the module sub-board 31 is locked based on the conflict between the two straight surfaces on the active locking block 73 and the first controlled block 62 to prevent the module sub-board 31 from falling off; A first limiting section 751 is fixedly provided on the left wall of the slot of the positioning female slot 72 , and a second limiting section 752 is fixedly provided on the lower end of the left side of the active locking block 73 . The active locking block 73 is limited based on the interference between the first limiting section 751 and the second limiting section 752 .

[0035] Among them, the lower end of the right side of the first controlled block 62 has an inclined first guide surface 621, and the upper end of the left side of the active locking block 73 has an inclined second guide surface 731; when the first control shaft 61 is forced to move right, the first controlled block 62 can squeeze the active locking block 73 open, and then smoothly move to the right side of the active locking block 73.

[0036] Among them, the positioning sub-hole 601 is also limitedly provided with a second control shaft 81 that can only move in the horizontal direction, and a second controlled block 82 is fixedly provided at the right end of the second control shaft 81. The second controlled block 82 is located on the left side of the first controlled block 62, and a through hole 821 is opened inside the second controlled block 82 for the first controlled block 62 to pass through; The positioning sub-base 60 is fixedly provided with a load block 91 located on the right side of the positioning sub-hole 601. A third internal pressure spring 92 is compressed between the first controlled block 62 and the load block 91. The third internal pressure spring 92 applies kinetic energy to the first controlled block 62 to continuously move leftward. The two ends of the third internal pressure spring 92 are respectively fixed on the first controlled block 62 and the load block 91. The lower end of the left side of the second controlled block 82 has an inclined third guide surface 822, and the right side of the second controlled block 82 is configured as a straight surface extending in the vertical direction. After the second control shaft 81 is forced to move to the right, the second controlled block 82 can squeeze the active locking block 73 open and form a straight surface to the first controlled block 62. Then, the first controlled block 62 will move smoothly to the left side of the active locking block 73 under the kinetic energy continuously applied by the third internal pressure spring 92.

[0037] Among them, a limiting filling block 83 is fixedly provided on the upper wall of the positioning sub-hole 601, the second control shaft 81 is located below the limiting filling block 83 and is attached to it, the first control shaft 61 is located below the second control shaft 81, and is attached to the second control shaft 81 and the lower wall of the positioning sub-hole 601 respectively; the upper end of the second controlled block 82 is attached to the upper wall of the positioning sub-hole 601, and the second controlled block 82 can interfere with the limiting filling block 83 to limit the second controlled block 82.

[0038] Among them, the temperature sensor 32 is vertically welded on the corresponding module sub-board 31, and a flexible thermal pad 321 is fixedly arranged on the top of the temperature sensor 32. After any module sub-board 31 is inserted into the internal cavity 21 and forms an electrical connection with the control motherboard 22, the flexible thermal pad 321 on the top of the temperature sensor 32 on the module sub-board 31 will contact the inner wall of the thermometer body 11.

[0039] It should be supplemented that in the present embodiment, an ultrasonic sensor (not shown) is welded to the lower end of the control motherboard 22 to realize height detection. Since the distance between each module sub-board 31 and the lower end of the control motherboard 22 is a fixed value, the height of the temperature sensor 32 on each module sub-board 31 can be quickly calculated by addition.

[0040] When installing one of the module daughter boards 31: 1. Connect the output pipe of the portable air pump to the corresponding air inlet interface 122 on the operation panel 12. The gas generated by the portable air pump will enter the corresponding expansion space 57 through the air inlet interface 122, the inner air pipe and the inner hole 58. The expansion space 57 will expand with the entry of the gas, and then push the limiting top block 56 and the sealing shaft 53 to move upward together until the sealing shaft 53 is completely hidden in the opening and closing main groove 51. At this time, the inserted opening 14 is opened.

[0041] 2. Insert the module daughter board 31 from the insertion opening 14. The sealing shaft 53 will not cause any obstruction to the module daughter board 31. The positioning shaft 43 will extend into the positioning hole 411 in the sub-positioning platform 41 on the module daughter board 31 to play a role in guiding, limiting and aligning. Each electrical needle 331 can be accurately inserted into the corresponding mother electrical socket 34 to achieve electrical connection between the module daughter board 31 and the control motherboard 22.

[0042] 3. The operator pushes the first control axis 61 to the right by pressing with his fingers, so that the first controlled block 62 moves to the right side of the active locking block 73, so that the two straight surfaces on the active locking block 73 and the first controlled block 62 can contact each other, thereby achieving the purpose of locking the module sub-board 31, and the module sub-board 31 and the control motherboard 22 are in a stable plug-in state.

[0043] 4. Finally, the output pipe of the portable air pump is pulled out, and the sealing shaft 53 will press downward into the bottom of the opening and closing auxiliary groove 52 under the kinetic energy of the continuous downward movement applied by the first internal pressure spring 54, maintaining the closure of the inserted opening 14 to prevent oil from penetrating. At the same time, the gas in the expansion space 57 will be squeezed out.

[0044] When removing one of the module daughter boards 31: 1. Connect the output pipe of the portable air pump to the corresponding air inlet interface 122 on the operation panel 12. The gas generated by the portable air pump will enter the corresponding expansion space 57 through the air inlet interface 122, the inner air pipe and the inner hole 58. The expansion space 57 will expand with the entry of gas, and then push the limiting top block 56 and the sealing shaft 53 to move upward together until the sealing shaft 53 is completely hidden in the opening and closing main groove 51.

[0045] 2. The operator pushes the second controlled axis to move rightward with his fingers, and the second controlled block 82 can squeeze the active locking block 73 along the second guide surface 731 of the active locking block 73, and form a straight surface to the first controlled block 62. Then, the first controlled block 62 will move smoothly to the left side of the active locking block 73 under the kinetic energy continuously applied by the third internal pressure spring 92, thereby releasing the interference fit.

[0046] 3. The operator pulls out the corresponding module sub-board 31 to the left to complete the removal.

[0047] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An oil tank measuring thermometer, comprising a thermometer body (11) and an operation panel (12), wherein the thermometer body (11) is connected to the operation panel (12) via a waterproof hose (13), and a touch screen (121) is provided on the operation panel (12); characterized in that: The thermometer body (11) is provided with an internal chamber (21), and a vertically long control motherboard (22) is fixedly arranged in the internal chamber (21) by screws; at least three module sub-boards (31) of different heights are detachably inserted in the internal chamber (21), and temperature sensors (32) are welded on the three module sub-boards (31). After the three module sub-boards (31) are inserted in the internal chamber (21), they can respectively control the motherboard (22) to form an electrical connection; The thermometer body (11) is provided with insertion openings (14) on the side thereof for inserting three module sub-plates (31) into the internal chamber (21), and the positions of the thermometer body (11) corresponding to the three insertion openings (14) are all provided with opening and closing structures capable of opening or closing the corresponding insertion openings (14); Each of the module sub-boards (31) is provided with a positioning locking sub-component, and three positioning locking mother components are provided inside the thermometer body (11). After any of the module sub-boards (31) is inserted into the internal chamber (21) and forms an electrical connection with the control motherboard (22), the positioning locking sub-component on the module sub-board (31) will lock the module sub-board (31) by interfering with the corresponding positioning locking mother component; The positioning locking sub-component is a controlled structure, and the interference fit between the positioning locking sub-component and the corresponding positioning locking female component can be released by controlling the positioning locking sub-component.

2. The oil tank measuring thermometer according to claim 1, characterized in that: The right ends of the three module sub-boards (31) are all welded with a sub-electrical seat (33), and each of the sub-electrical seats (33) is provided with a plurality of electrical pins (331) extending toward the right side. The left end of the control motherboard (22) is welded with three mother electrical seats (34), and each electrical pin (331) on the three module sub-boards (31) can be respectively inserted into the corresponding mother electrical seat (34) to achieve electrical connection; The three module sub-boards (31) are all welded with sub-positioning platforms (41), and the sub-positioning platforms (41) are provided with horizontal positioning holes (411). The left end of the control motherboard (22) is welded with three mother positioning platforms (42), and each of the mother positioning platforms (42) is fixed with a positioning shaft (43) extending toward the left side. When any one of the module sub-boards (31) is inserted into the internal chamber (21), it can be positioned based on the mating of the positioning hole (411) and the corresponding positioning shaft (43), so that each electrical needle (331) can be inserted into the corresponding mother electrical socket (34) respectively.

3. The oil tank measuring thermometer according to claim 1, characterized in that: The opening and closing structure comprises an opening and closing main groove (51) and an opening and closing auxiliary groove (52) which are provided inside the thermometer body (11); the opening and closing main groove (51) and the opening and closing auxiliary groove (52) are respectively located above and below the corresponding insertion opening (14); the notch of the opening and closing main groove (51) is located at its lower end, and the notch of the opening and closing auxiliary groove (52) is located at its upper end; a sealing shaft (53) capable of moving in a vertical direction is provided in the opening and closing main groove (51); the sealing shaft (53) maintains an initial state of partially extending downward from the notch of the opening and closing main groove (51) and pressing against the bottom of the opening and closing auxiliary groove (52); the sealing shaft (53) maintains the closure of the insertion opening (14) in the initial state; A first internal pressure spring (54) is provided between the bottom of the main opening and closing groove (51) and the sealing shaft (53) to apply kinetic energy to the sealing shaft (53) to continuously move downward; A limiting bottom block (55) is fixedly arranged at the notch of the opening and closing main groove (51), and a limiting top block (56) is fixedly arranged on the right side of the upper end of the sealing shaft (53). After the sealing shaft (53) is pressed downward into the bottom of the opening and closing auxiliary groove (52), a space is provided between the limiting bottom block (55) and the limiting top block (56) to form an expansion space (57), and an inner hole (58) connected to the expansion space (57) is provided inside the thermometer body (11).

4. The oil tank measuring thermometer according to claim 3, characterized in that: The operating panel (12) is provided with three air inlet interfaces (122), and the operating panel (12) is internally provided with internal air pipes respectively connected to the three air inlet interfaces (122). The three internal air pipes are arranged in a waterproof hose (13) and introduced into the interior of the thermometer body (11), and are respectively connected to the inner holes (58) in the three opening and closing structures.

5. The oil tank measuring thermometer according to claim 4, characterized in that: The positioning and locking sub-component comprises a positioning sub-base (60) welded on the module sub-plate (31), a positioning sub-hole (601) penetrating horizontally is provided inside the positioning sub-base (60), a first control shaft (61) capable of only horizontal movement is limitedly arranged in the positioning sub-hole (601), and a first controlled block (62) is fixedly arranged at the right end of the first control shaft (61); The positioning locking female component comprises a positioning female seat (71) fixed inside the thermometer body (11), a longitudinal positioning female groove (72) is provided in the positioning female seat (71), the notch of the positioning female groove (72) is located at the upper end thereof, an active locking block (73) which can only move in the vertical direction is provided in the positioning female groove (72), and a second internal pressure spring (74) which continuously applies kinetic energy of upward movement to the active locking block (73) is also provided in the positioning female groove (72); the right side of the active locking block (73) and the left side of the first controlled block (62) are both configured as straight surfaces extending in the vertical direction, and the module sub-plate (31) is locked based on the interference between the two straight surfaces on the active locking block (73) and the first controlled block (62) to prevent the module sub-plate (31) from falling off; A first limiting section (751) is fixedly provided on the left wall of the notch of the positioning female groove (72), and a second limiting section (752) is fixedly provided on the lower end of the left side of the active locking block (73), and the active locking block (73) is limited based on the interference between the first limiting section (751) and the second limiting section (752).

6. The oil tank measuring thermometer according to claim 5, characterized in that: The lower end of the right side of the first controlled block (62) has an inclined first guide surface (621), and the upper end of the left side of the active locking block (73) has an inclined second guide surface (731); when the first control shaft (61) is forced to move rightward, the first controlled block (62) can squeeze the active locking block (73) open, and then smoothly move to the right side of the active locking block (73).

7. The oil tank measuring thermometer according to claim 6, characterized in that: A second control shaft (81) capable of only horizontal movement is also provided in the positioning sub-hole (601), and a second controlled block (82) is fixedly provided at the right end of the second control shaft (81). The second controlled block (82) is located on the left side of the first controlled block (62), and a through hole (821) is provided inside the second controlled block (82) for the first controlled block (62) to pass through. The positioning sub-base (60) is fixedly provided with a load block (91) located on the right side of the positioning sub-hole (601); a third internal pressure spring (92) is compressed between the first controlled block (62) and the load block (91); the third internal pressure spring (92) applies kinetic energy to the first controlled block (62) to continuously move leftward; two ends of the third internal pressure spring (92) are respectively fixed on the first controlled block (62) and the load block (91); The lower end of the left side of the second controlled block (82) has an inclined third guide surface (822), and the right side of the second controlled block (82) is configured as a straight surface extending in the vertical direction. After the second control axis (81) is forced to move rightward, the second controlled block (82) can squeeze the active locking block (73) and form a straight surface to the first controlled block (62). Then, the first controlled block (62) will smoothly move to the left side of the active locking block (73) under the kinetic energy continuously applied by the third internal pressure spring (92).

8. The oil tank measuring thermometer according to claim 7, characterized in that: A limiting filling block (83) is fixedly arranged on the upper wall of the positioning sub-hole (601); the second control shaft (81) is located below the limiting filling block (83) and is in contact with it; the first control shaft (61) is located below the second control shaft (81) and is in contact with the second control shaft (81) and the lower wall of the positioning sub-hole (601) respectively; the upper end of the second controlled block (82) is in contact with the upper wall of the positioning sub-hole (601); the second controlled block (82) can interfere with the limiting filling block (83) to limit the second controlled block (82).

9. The oil tank measuring thermometer according to claim 8, characterized in that: The temperature sensor (32) is vertically welded to the corresponding module sub-board (31), and a flexible thermal pad (321) is fixedly arranged on the top of the temperature sensor (32). After any one of the module sub-boards (31) is inserted into the internal chamber (21) and forms an electrical connection with the control motherboard (22), the flexible thermal pad (321) on the top of the temperature sensor (32) on the module sub-board (31) will contact the inner wall of the thermometer body (11).

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