A device for remotely measuring liquid level of a vacuum heating furnace by touch screen

Abstract

The present application belongs to the field of crude oil transportation, and relates to a device for remotely measuring the liquid level of a vacuum heating furnace by using a touch screen. The device comprises a shell, a resistance touch screen and a hollow pipe arranged on the shell, the hollow pipe being in communication with the inside of the heating furnace to form a communicating vessel, a spring arranged in the shell, the spring being connected to a hollow suspension block through a measuring line, the spring being always in a stretched state, the hollow suspension block being arranged in the hollow pipe, the spring being capable of changing the elongation synchronously when the hollow suspension block changes with the position of the softened water, so that the measuring line is always in a tensioned state. The measuring line is connected to a pointer through a transmission device, the end of the pointer being in contact with the resistance touch screen, and the resistance touch screen being connected to a data processing device. The measuring line drives the pointer to move through the transmission device, the pointer sliding on the resistance touch screen to generate an electric signal, the resistance touch screen transmitting the generated electric signal to the data processing device for further data processing, and then the liquid level of the softened water in the vacuum heating furnace is obtained.

Description

Technical Field

[0001] This invention belongs to the field of crude oil transportation and relates to a touch-screen remote measurement device for the liquid level of a vacuum heating furnace. Background Technology

[0002] In oilfields, vacuum heaters are primarily used to heat crude oil, maintaining its temperature within a reasonable range during gathering and transportation to prevent condensation in pipelines. The working principle of a vacuum heater involves adding a certain amount of softened water into the furnace. The combustion of fuel gas in the combustion chamber transfers heat to the softened water, which then becomes vapor. This vapor flows in the gas phase and, upon contact with the low-temperature coil, transfers heat to the coil. The vapor then cools and condenses back into liquid softened water, repeating this heat transfer cycle. The softened water level must be strictly controlled between the combustion chamber and the coil to ensure efficient heat exchange and normal operation of the equipment. Since the distance between the combustion chamber and the coil is relatively short (approximately 60 cm), real-time and precise monitoring of the softened water level is necessary to guarantee proper heating.

[0003] The existing vacuum heating furnace level gauges mainly use low-cost magnetic float level gauges. These gauges are installed on the outside of the vacuum heating furnace, which reduces the furnace's insulation performance. Furthermore, in low-temperature winter environments, this can affect the material and waterproofing of the entire panel; water vapor seeping into the panel can cause frost formation on the glass surface, affecting level measurement. Additionally, the magnetic float level gauge displays the level by magnetically driving the flipping of a column. Due to the limited width of the flipping column, its accuracy is relatively low. Moreover, the magnetic float level gauge has strict environmental requirements; it is easily affected by magnetic materials and electrical signals in the environment, thus affecting the accuracy of level measurement.

[0004] For radar level gauges, which are currently widely used, the environmental conditions become more complex when there are fluctuations and foams on the liquid surface during the heating and softening process. This can cause the signal to be scattered out of the propagation path or have most of its energy absorbed, resulting in a weaker or even no signal returning to the radar level gauge's receiving antenna. This can seriously affect the accuracy of the radar level gauge.

[0005] Currently, both magnetic level gauges and radar level gauges are easily affected by the environment, leading to inaccurate measurement of the softened water level in vacuum heating furnaces. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention aims to provide a touch screen remote measurement device for liquid level in a vacuum heating furnace, which can accurately measure the liquid level of softened water in the vacuum heating furnace.

[0007] To achieve the above objectives, the present invention employs the following technical solution:

[0008] This invention discloses a touchscreen-type remote measurement device for liquid level in a vacuum heating furnace, comprising a housing, a resistive touchscreen and a hollow tube on the housing, a spring inside the housing, the spring being connected to a hollow suspension block via a metering line, the spring being always in a stretched state, the hollow suspension block being placed inside the hollow tube, the metering line being connected to a pointer via a transmission device, the end of the pointer being in contact with the resistive touchscreen, and the resistive touchscreen being connected to a data processing device.

[0009] Furthermore, a fixed threaded shaft is provided on the housing, and a threaded rotating structure is sleeved on the fixed threaded shaft. Measuring lines and spring lines are wound on the threaded rotating structure, and the spring lines are connected to the spring.

[0010] Furthermore, the threaded rotating structure is provided with medium-diameter threads, large-diameter threads and small-diameter threads. The large-diameter threads are wound with designed lines, and the small-diameter threads are wound with spring lines. Several threaded support columns are arranged on the housing, and the threaded support columns mesh with the medium-diameter threads.

[0011] Furthermore, the housing is provided with a fixed pulley support plate, the fixed pulley support plate is provided with a fixed pulley, the spring is arranged on the fixed pulley support plate, and the spring line is wound around the fixed pulley.

[0012] Furthermore, the transmission device includes a spherical gear, and semi-circular particles that mesh with the spherical gear are arranged on the metering line. A central rotating shaft is threaded through the spherical gear and is movably arranged on the housing. A pointer with a Z-shaped structure is fixedly installed on the central rotating shaft.

[0013] Furthermore, several bearing support rings are arranged on the housing, and fixed bearings are arranged inside the bearing support rings, which are sleeved on the central rotating shaft.

[0014] Furthermore, the housing is equipped with a touch screen support frame, on which a resistive touch screen is mounted.

[0015] Furthermore, a fixed connecting plate is provided on the housing.

[0016] Furthermore, a hollow rubber ring and a hollow suspension block support ring are arranged inside the hollow circular tube. The hollow rubber ring is fitted onto the metering line, and the hollow suspension block is located between the hollow rubber ring and the hollow suspension block support ring. An exhaust hole and a drain outlet are opened on the hollow circular tube. The exhaust hole is located above the exhaust hole and between the hollow rubber ring and the hollow suspension block support ring. A corrugated plate assembly is provided at the end of the hollow circular tube.

[0017] Furthermore, the data processing device includes a computer, which is connected to the resistive touchscreen via an MCU controller.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention includes a housing, which secures other components of the device and provides a relatively sealed environment for its internal structure, preventing environmental influences. The housing houses a resistive touchscreen and a hollow cylindrical tube. The hollow tube connects to the interior of a heating furnace, forming a communicating vessel. Softened water from the furnace enters the hollow tube, ensuring the hollow suspended block remains afloat. A spring is installed inside the housing, connected to the hollow suspended block via a metering line. The spring is always under tension. As the hollow suspended block changes position with the softened water level, the spring elongates accordingly, keeping the metering line taut. The metering line is connected to a pointer via a transmission device. The pointer's end contacts the resistive touchscreen, which is connected to a data processing device. When the metering line moves with the hollow suspended block, the transmission device moves the pointer, causing it to slide on the resistive touchscreen and generate an electrical signal. The touchscreen transmits this signal to the data processing device for further processing, thus determining the softened water level in the vacuum heating furnace. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] The components include: 1. Fixed threaded shaft; 2. Threaded rotation structure; 3. Metering line; 4. Fixed bearing; 5. Central rotating shaft; 6. Spherical gear; 7. Pointer; 8. Resistive touch screen; 9. MCU controller; 10. Computer; 11. Hollow suspension block; 12. Hollow round tube; 13. Housing; 14. Threaded support column; 15. Spring line; 16. Spring; 17. Fixed pulley; 18. Fixed pulley support plate; 19. Bearing support ring; 20. Touch screen support frame; 21. Fixed connecting plate; 22. Medium diameter thread; 23. Large diameter thread; 24. Data processing device; 25. Small diameter thread; 26. Hollow rubber ring; 27. Vent hole; 28. Hollow suspension block support ring; 29. ​​Corrugated plate assembly; 30. Support block; 31. Drain port. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings:

[0025] See Figure 1 This invention discloses a touchscreen-based remote measurement device for the liquid level of a vacuum heating furnace, comprising a housing 13. The housing 13 is used to fix other components of the device and provide a relatively sealed environment for the internal structure of the device, avoiding the influence of the environment on the internal structure. A resistive touchscreen 8 and a hollow cylindrical tube 12 are mounted on the housing 13. The hollow cylindrical tube 12 communicates with the interior of the heating furnace, forming a communicating vessel. After the softened water inside the heating furnace enters the hollow cylindrical tube 12, it ensures that the hollow suspended block 11 remains in a floating state. A spring 16 is installed inside the housing 13. The spring 16 is connected to the hollow suspended block 11 through a metering line 3. The spring 16 is always in a stretched state. The hollow suspended block 11 is placed inside the hollow cylindrical tube 12. When the position of the hollow suspended block 11 changes with the softened water level, the spring 16 can synchronously change its elongation, thereby keeping the metering line 3 in a taut state. The metering line 3 is connected to a pointer 7 through a transmission device. The end of the pointer 7 contacts the resistive touchscreen 8, which is connected to a data processing device 24. As the metering line 3 moves with the hollow suspension block 11, the pointer 7 moves via the transmission device. The pointer 7 slides on the resistive touch screen 8, generating an electrical signal. The resistive touch screen 8 transmits the generated electrical signal to the data processing device 24 for further data processing, thereby obtaining the level of softened water in the vacuum heating furnace. This device utilizes mechanical principles to reflect the real-time changes in the liquid level inside the heating furnace through the real-time height changes of the hollow suspension block. It also utilizes the signal transmission function of the touch screen to remotely monitor the changes in the liquid level in the vacuum heating furnace in real time, accurately calculating the true height of the liquid level. This ensures that the liquid level inside the furnace remains within a safe height range during operation, guaranteeing both normal heating and efficient and stable production at the oil and gas production site.

[0026] See Figure 1In another feasible embodiment of the present invention, the following modifications are made as appropriate. The system includes a housing 13, on which a resistive touchscreen 8 and a hollow tube 12 are mounted. A spring 16 is located inside the housing 13. The spring 16 is connected to a hollow suspension block 11 via a measuring line 3. The spring 16 is always in a stretched state. The hollow suspension block 11 is placed inside the hollow tube 12. The measuring line 3 is connected to a pointer 7 via a transmission device. The end of the pointer 7 contacts the resistive touchscreen 8. The resistive touchscreen 8 is connected to a data processing device 24.

[0027] The housing 13 is used to fix other components of the device and provide a relatively sealed environment for the internal structure of the device, avoiding the influence of the environment on the internal structure. In specific use, the hollow circular tube 12 is connected to the inside of the heating furnace to form a communicating vessel. After the softened water inside the heating furnace enters the hollow circular tube 12, the hollow suspension block 11 always floats on the surface of the softened water, that is, the hollow suspension block 11 can rise and fall synchronously with the liquid level. During the rise and fall of the hollow suspension block 11, since the spring 16 is always in a stretched state, the metering line 3 is always in a straight state, and the metering line 3 can move synchronously with the hollow suspension block 11. During the movement of the metering line 3, the pointer 7 is driven by the transmission device. Since the pointer 7 is in contact with the resistive touch screen 8, the end of the pointer 7 slides on the surface of the resistive touch screen 8 during the movement of the pointer 7, thereby generating a corresponding electrical signal. The resistive touch screen 8 transmits the generated electrical signal to the data processing device 24 for further data processing, thereby obtaining the liquid level of the softened water in the vacuum heating furnace. This device can accurately measure the liquid level of the softened water in the vacuum heating furnace and is less affected by the environment.

[0028] Example 1:

[0029] See Figure 1 This embodiment discloses a touchscreen-type remote measurement device for liquid level in a vacuum heating furnace, including a housing 13. The housing 13 is equipped with a resistive touchscreen 8 and a hollow tube 12. A spring 16 is provided inside the housing 13. The spring 16 is connected to a hollow suspension block 11 through a metering line 3. The spring 16 is always in a stretched state. The hollow suspension block 11 is placed inside the hollow tube 12. The metering line 3 is connected to a pointer 7 through a transmission device. The end of the pointer 7 is in contact with the resistive touchscreen 8. The resistive touchscreen 8 is connected to a data processing device 24.

[0030] A fixed threaded shaft 1 is provided on the housing 13, and a threaded rotating structure 2 is sleeved on the fixed threaded shaft 1. Measuring lines 3 and spring lines 15 are wound on the threaded rotating structure 2, and the spring lines 15 are connected to the spring 16. When the hollow suspension block 11 moves up and down, the spring 16 drives the threaded rotating structure 2 to rotate through the spring lines 15. The threaded rotating structure 2 pulls the spring lines 15, so that the spring lines 15 are always in a taut state.

[0031] The threaded rotating structure 2 is provided with a medium diameter thread 22, a large diameter thread 23 and a small diameter thread 25. The large diameter thread 23 is wound with a design line 3, and the small diameter thread 25 is wound with a spring line 15. Several threaded support columns 14 are arranged on the housing 13, and the threaded support columns 14 mesh with the medium diameter thread 22.

[0032] The housing 13 is provided with a fixed pulley support plate 18, the fixed pulley support plate 18 is provided with a fixed pulley 17, the spring 16 is arranged on the fixed pulley support plate 18, and the spring line 15 is wound around the fixed pulley 17.

[0033] Example 2:

[0034] See Figure 1 This embodiment discloses a touchscreen-type remote measurement device for liquid level in a vacuum heating furnace, including a housing 13. The housing 13 is equipped with a resistive touchscreen 8 and a hollow tube 12. A spring 16 is provided inside the housing 13. The spring 16 is connected to a hollow suspension block 11 through a metering line 3. The spring 16 is always in a stretched state. The hollow suspension block 11 is placed inside the hollow tube 12. The metering line 3 is connected to a pointer 7 through a transmission device. The end of the pointer 7 is in contact with the resistive touchscreen 8. The resistive touchscreen 8 is connected to a data processing device 24.

[0035] The transmission device includes a spherical gear 6, which contacts the measuring line 3. Semi-circular particles meshing with the spherical gear 6 are arranged on the measuring line 3. A central rotating shaft 5 passes through the spherical gear 6 and is movably mounted on the housing 13. A pointer 7 with a Z-shaped structure is fixedly mounted on the central rotating shaft 5. When the measuring line 3 moves up and down, it drives the spherical gear 6 to rotate, which in turn drives the pointer 7 to rotate via the central rotating shaft 5. The pointer 7, with its Z-shaped structure, can rotate around the central rotating shaft 5, and its end can slide across the resistive touchscreen 8.

[0036] Several bearing support rings 19 are arranged on the housing 13, and fixed bearings 4 are arranged inside the bearing support rings 19. The fixed bearings 4 are sleeved on the central rotating shaft 5.

[0037] The housing 13 is provided with a touch screen support frame 20, and the touch screen support frame 20 is provided with a resistive touch screen 8.

[0038] Example 3:

[0039] See Figure 1This embodiment discloses a touchscreen-type remote measurement device for liquid level in a vacuum heating furnace, including a housing 13. The housing 13 is equipped with a resistive touchscreen 8 and a hollow tube 12. A spring 16 is provided inside the housing 13. The spring 16 is connected to a hollow suspension block 11 through a metering line 3. The spring 16 is always in a stretched state. The hollow suspension block 11 is placed inside the hollow tube 12. The metering line 3 is connected to a pointer 7 through a transmission device. The end of the pointer 7 is in contact with the resistive touchscreen 8. The resistive touchscreen 8 is connected to a data processing device 24.

[0040] The housing 13 is provided with a fixing plate 21. The device is fixed at a suitable measuring position by means of the fixing plate 21.

[0041] Example 4:

[0042] See Figure 1 This embodiment discloses a touchscreen-type remote measurement device for liquid level in a vacuum heating furnace, including a housing 13. The housing 13 is equipped with a resistive touchscreen 8 and a hollow tube 12. A spring 16 is provided inside the housing 13. The spring 16 is connected to a hollow suspension block 11 through a metering line 3. The spring 16 is always in a stretched state. The hollow suspension block 11 is placed inside the hollow tube 12. The metering line 3 is connected to a pointer 7 through a transmission device. The end of the pointer 7 is in contact with the resistive touchscreen 8. The resistive touchscreen 8 is connected to a data processing device 24.

[0043] A hollow circular tube 12 contains a hollow rubber ring 26 and a hollow suspension block support ring 28. The hollow rubber ring 26 is fitted onto the metering line 3. The hollow suspension block 11 is located between the hollow rubber ring 26 and the hollow suspension block support ring 28. The hollow circular tube 12 has an exhaust port 27 and a drain outlet 31, with the exhaust port 27 located above it. A corrugated plate assembly 29 is provided at the end of the hollow circular tube 12. During use, it is necessary to ensure that the hollow suspension block 11 is always located between the hollow rubber ring 26 and the hollow suspension block support ring 28. Before softened water enters the hollow circular tube 12, the hollow suspension block 11 is at least on the hollow suspension block support ring 28. The corrugated plate assembly 29 helps to prevent air bubbles in the softened water from entering the hollow circular tube and also reduces the scouring effect of liquid surface fluctuations on the hollow suspension block.

[0044] Example 5:

[0045] See Figure 1This embodiment discloses a touchscreen-type remote measurement device for liquid level in a vacuum heating furnace, including a housing 13. The housing 13 is equipped with a resistive touchscreen 8 and a hollow tube 12. A spring 16 is provided inside the housing 13. The spring 16 is connected to a hollow suspension block 11 through a metering line 3. The spring 16 is always in a stretched state. The hollow suspension block 11 is placed inside the hollow tube 12. The metering line 3 is connected to a pointer 7 through a transmission device. The end of the pointer 7 is in contact with the resistive touchscreen 8. The resistive touchscreen 8 is connected to a data processing device 24.

[0046] The data processing device 24 includes a computer 10, which is connected to the resistive touchscreen 8 via an MCU controller 9. Electrical signals generated on the resistive touchscreen 8 are transmitted to the computer 10 via the MCU controller 9. The MCU controller 9 transmits real-time changes in the position of the pointer contacting the pressure sensor on the resistive touchscreen to the corresponding computer program.

[0047] Example 6:

[0048] See Figure 1 This embodiment discloses a touchscreen-type remote measurement device for the liquid level of a vacuum heating furnace, comprising a housing 13. A fixed threaded shaft 1, a hollow round tube 12, a threaded support column 14, a spring 16, a fixed pulley support plate 18, a support block 30, a bearing support ring 19, a touchscreen support frame 20, and a fixed connecting plate 21 are welded and fixed to the housing 13. A threaded rotating structure 2 is connected to the fixed threaded shaft 1. The threaded rotating structure 2 is composed of a medium-diameter thread 22, a large-diameter thread 23, and a small-diameter thread 25 fixedly welded together. Measuring lines 3 and spring lines 15 are wound around the threaded rotating structure 2. 3. A hollow suspension block 11 is connected to the bottom end. The metering line 3 meshes with the spherical gear 6 for transmission. A central rotating shaft 5 is connected to the center line inside the spherical gear 6. A fixed bearing 4 is connected to the central rotating shaft 5. A pointer 7 is connected to the end of the central rotating shaft 5. The pointer 7 makes point contact with the resistive touch screen 8 for pressure sensing. The resistive touch screen 8 is connected to the MCU controller 9 via a data cable. The MCU controller 9 is connected to the computer 10 via a data cable. A hollow rubber ring 26, an exhaust hole 27, a hollow suspension block support ring 28, and a corrugated plate group 29 are fixed on the hollow round tube 12. A fixed pulley 17 is connected to one end of the fixed pulley support plate 18.

[0049] Preferably, the fixed threaded shaft 1 welded inside the shell 13 is parallel to the top surface of the fixed connecting plate 21, and the top surface of the fixed connecting plate 21 can be horizontally fixed at the top position inside the vacuum heating furnace. The vertical part of the hollow round tube 12 welded to the shell 13 is perpendicular to the bottom surface of the heating furnace.

[0050] Preferably, the thread profile on the fixed threaded shaft 1 is a triangular thread, and the thread profile, major diameter, pitch diameter, minor diameter, and pitch of the thread on the fixed threaded shaft 1 are consistent with the corresponding parameters of the internal thread on the threaded rotating structure 2.

[0051] Preferably, the threaded rotating structure 2 utilizes its internal thread to rotate around the fixed threaded shaft 1, and the tooth profile and pitch of all external threads on the threaded rotating structure 2 are consistent with the corresponding parameters of its internal threads.

[0052] Preferably, the large-diameter thread 23 on the threaded rotating structure 2 is wound with a metering line 3, and the small-diameter thread 25 on the threaded rotating structure 2 is wound with a spring line 15.

[0053] Preferably, the external thread on the large-diameter thread 23 is spirally wound with the metering line 3 from the left end to the right at the root position of the external thread, and the external thread on the small-diameter thread 25 is spirally wound with the spring line 15 from the right end to the left at the root position of the external thread. The total length of the metering line 3 and the spring line 15 does not change during operation.

[0054] Preferably, during the rotation of the threaded rotating structure 2, the relative positions of the vertical portions of the metering line 3 and the spring line 15 are such that they do not move horizontally.

[0055] Preferably, hemispherical particles are embedded in the metering line 3 at fixed intervals, and the intervals between the hemispherical particles on the metering line 3 can just match the hemispherical particles on the spherical gear 6.

[0056] Preferably, the medium-diameter thread 22 on the threaded rotating structure 2 and the threaded support column 14 that is threadedly connected to the shell 13 prevent the threaded rotating structure 2 from rotating eccentrically.

[0057] Preferably, the fixed pulley 17 is used to change the direction of the spring line 15, and the fixed pulley 17 is mounted on the end of the fixed pulley support plate 18 and can rotate.

[0058] Preferably, the fixed pulley support plate 18 is fixed to the housing 13 at a slightly horizontal downward tilt angle, and a support block 30 is connected between the middle of the fixed pulley support plate 18 and the housing 13.

[0059] Preferably, the bottom of the support block 30 is drilled with a circular hole, the diameter of which is much smaller than the length of the corresponding cross section of the support block 30.

[0060] Preferably, the hollow tube 12 is composed of two parts: a vertical part and a horizontal part. The hollow tube 12 is provided with a hollow rubber ring 26 at the vertical connection with the shell 13, which allows the metering line 3 to pass through. The upper end of the vertical part of the hollow tube 12 is provided with an exhaust hole 27 that communicates with the gas inside the vacuum heating furnace. The lower end of the vertical part of the hollow tube 12 is provided with a hollow suspension block support ring 28 containing air holes.

[0061] Preferably, the inner diameter of the vertical portion of the hollow circular tube 12 is slightly larger than the maximum diameter of the hollow suspension block 11, and a horizontally oriented corrugated plate assembly 29 is fixed at the end of the horizontal portion of the hollow circular tube 12.

[0062] Preferably, the fixed bearing 4 is fixed by a bearing support ring 19 that is vertically fixed to the housing 13, and a rotatable central shaft 5 is connected inside the fixed bearing 4.

[0063] Preferably, the resistive touch screen 8 is vertically fixed to the housing 13 by connecting the touch screen support frame 20, and the resistive touch screen 8 and the rotating pointer 7 always maintain vertical contact.

[0064] Preferably, three drain ports 31 are provided on the housing 13 at the lower left corner of the fixed threaded shaft 1 and on the housing 13 at the lower left and lower right corners of the touch screen support frame 20, respectively.

[0065] Based on its structure, the working process of this invention is as follows:

[0066] 1. First, fix the device at the top of the heating furnace by fixing the connecting plate 21 so that the position of the hollow suspension block support ring 28 at the bottom of the hollow tube is more than 10mm lower than the top of the combustion chamber inside the heating furnace. At the same time, the position of the exhaust port at the top of the hollow tube is more than 10mm higher than the bottom of the heated coil inside the heating furnace. And keep the fixing threaded shaft 1 parallel to the bottom surface of the heating furnace and the hollow tube 12 perpendicular to the bottom surface of the heating furnace by adjusting.

[0067] 2. After fixing the device inside the heating furnace, ensure the heating furnace is sealed and insulated. Connect the data cable of the MCU controller from the heating furnace to the USB port of the computer. Then turn on the computer signal processing system and the real-time liquid level display interface. Ensure that the data collected by the capacitive touch screen can be transmitted in real time and displayed as liquid level value after being processed by the computer.

[0068] 3. The threaded rotating structure of this device serves as the transmission device for the line and the adjustment device for the spring tension. Through the combined action of the up-and-down movement of the hollow suspension block and the spring tension, the threaded rotating structure is pulled to rotate along a fixed horizontal threaded shaft. The spring tension keeps the metering line 3 in a straight state at all times.

[0069] 4. When no water is added to the heating furnace, the hollow suspension block will fall onto the hollow suspension block support ring at the bottom of the hollow tube because the spring tension of this device is less than the sum of the weight of the hollow suspension block and the vertical length of the metering line.

[0070] 5. By adding a certain amount of water into the heating furnace, the liquid level is maintained in the area between the top of the combustion chamber and the bottom of the heated coil. Since the sum of the buoyancy and spring tension of the hollow suspension block under the fully submerged state is greater than the sum of the weight of the hollow suspension block and the weight of the vertical length of the measuring line, the hollow suspension block moves upward, which at the same time drives the screw rotating structure 2 to rotate, and also causes the measuring line and spring rope to stretch and contract.

[0071] 6. The hollow block located on the hollow block support ring at the lower part of the hollow tube will float on the water surface under the combined action of water buoyancy and spring tension. Ultimately, the three forces of gravity of the hollow block and the vertical length of the measuring line, buoyancy of the hollow block and spring tension are balanced, so that the hollow block is in a state of instantaneous static equilibrium.

[0072] 7. Because the vertical length of the measuring line 3 is stretched or contracted due to the up-and-down floating of the hollow suspension block, and the interval between the semi-circular particles on the measuring line can just match the semi-circular particles on the spherical gear 6, the amount of stretching or contraction of the vertical length of the measuring line 3 can be expressed by recording the number of rotations of the spherical gear 6 according to the ratio calculated during the test.

[0073] 8. Since the ball gear and the pointer are fixed on the same central axis, the number of rotations of the ball gear can be known by recording the number of rotations of the pointer. Therefore, the MCU controller is used to transmit the real-time change data of the position of the pointer and the pressure sensor of the resistive touch screen to the corresponding computer program.

[0074] 9. The real-time rotation trajectory of the pointer can be recorded by a computer. Since the rotation radius of the pointer is known during installation, the real-time rotation angle of the pointer can be calculated using the rotation trajectory.

[0075] 10. The method of lowering the liquid level by rotating the pointer clockwise and raising the liquid level by rotating it counterclockwise is adopted. If the pointer rotates clockwise by a certain angle in the next moment, the total relative rotation angle value before is reduced by the rotation angle value at that moment. If the pointer rotates counterclockwise by a certain angle in the next moment, the total relative rotation angle value before is added by the rotation angle value at that moment.

[0076] 11. The total relative rotation angle of the pointer under real-time operating conditions is obtained through calculation. Since the length of movement of the measuring line corresponding to the unit rotation angle of the pointer is known during the test, the total length of movement of the measuring line under real-time operating conditions L1 corresponding to the total relative rotation angle under real-time operating conditions is calculated using the corresponding computer programming.

[0077] 12. Since the hollow suspension block 11 is located on the hollow suspension block support ring 28 at the bottom of the hollow circular tube during installation, the distance L2 between the hollow suspension block at that position and the bottom surface of the heating furnace is measured at that time. The total moving length L1 of the metering line is summed with the measured distance L2 between the hollow suspension block at that position and the bottom surface of the heating furnace to obtain the height value of the liquid level in the heating furnace under real-time operating conditions.

[0078] 13. Display the calculated liquid level height value under real-time operating conditions on the computer screen, and simultaneously set the highest liquid level alarm value and the lowest liquid level alarm value to monitor the liquid level height in real time to ensure it is within the safe and permissible range.

[0079] This device utilizes mechanical principles to reflect real-time changes in the liquid level inside the heating furnace through the real-time height changes of the hollow suspension block. It also uses the signal transmission function of the touch screen to remotely monitor changes in the liquid level in the vacuum heating furnace in real time. The entire process mainly adopts the principle of gear and screw transmission, which can accurately calculate the true height of the liquid level, thereby ensuring that the liquid level inside the furnace is within a safe height range during the operation of the heating furnace. This not only ensures the normal heating of the heating furnace, but also effectively guarantees the efficient and stable production at the oil and gas production site.

[0080] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A device for remotely measuring the liquid level of a vacuum heating furnace by touch screen, characterized in that, The utility model relates to a kind of digital display device, including shell (13), resistance touch screen (8) and hollow pipe (12) are equipped on shell (13), spring (16) is equipped in shell (13), spring (16) is connected hollow suspension block (11) by metering line (3), spring (16) is always in tensile state, hollow suspension block (11) is placed in hollow pipe (12), metering line (3) is connected pointer (7) by transmission device, the end of pointer (7) is in contact with resistance touch screen (8), resistance touch screen (8) is connected data processing device (24); Metering line (3) is connected with hollow suspension block (11) at bottom end. Fixed threaded shaft (1) is arranged on the shell (13), the threaded rotating structure (2) is sleeved on the fixed threaded shaft (1), the metering line (3) and the spring line (15) are wound on the threaded rotating structure (2), and the spring line (15) is connected with the spring (16). The threaded rotating structure (2) is provided with a medium diameter thread (22), a large diameter thread (23) and a small diameter thread (25), the metering line (3) is wound on the large diameter thread (23), the spring line (15) is wound on the small diameter thread (25), and a plurality of threaded support columns (14) are arranged on the shell (13), and the threaded support columns (14) are engaged with the medium diameter thread (22).

2. A device for remotely measuring the liquid level of a vacuum heating furnace by touch screen according to claim 1, characterized in that, The shell (13) is provided with a fixed pulley support plate (18), the fixed pulley support plate (18) is provided with a fixed pulley (17), the spring (16) is arranged on the fixed pulley support plate (18), and the spring line (15) is wound on the fixed pulley (17).

3. A device for remotely measuring the liquid level of a vacuum heating furnace by touch screen according to claim 1, characterized in that, The transmission device includes a spherical gear (6), the metering line (3) is arranged with a semicircular particle engaged with the spherical gear (6), the center rotating shaft (5) is arranged on the shell (13), the center rotating shaft (5) is fixedly provided with the pointer (7), and the pointer (7) is in Z-shaped structure.

4. A device for remotely measuring the liquid level of a vacuum heating furnace by touch screen according to claim 3, characterized in that, A plurality of bearing support rings (19) are arranged on the shell (13), the fixed bearing (4) is arranged in the bearing support ring (19), and the fixed bearing (4) is sleeved on the center rotating shaft (5).

5. A device for remotely measuring the liquid level in a vacuum heating furnace by means of a touch screen according to claim 4, characterized in that, The shell (13) is provided with a touch screen support frame (20), and the resistance touch screen (8) is arranged on the touch screen support frame (20).

6. A device for remotely measuring liquid level in a vacuum heating furnace by touch screen according to claim 1, characterized in that, The shell (13) is provided with a fixed connecting plate (21).

7. A device for remotely measuring liquid level in a vacuum heating furnace by touch screen according to claim 1, characterized in that, The hollow pipe (12) is arranged with a hollow rubber ring (26) and a hollow suspension block support ring (28), the hollow rubber ring (26) is sleeved on the metering line (3), the hollow suspension block (11) is located between the hollow rubber ring (26) and the hollow suspension block support ring (28), the exhaust hole (27) and the liquid discharge port (31) are arranged on the hollow pipe (12), the liquid discharge port (31) is located above the exhaust hole (27), the exhaust hole (27) is located between the hollow rubber ring (26) and the hollow suspension block support ring (28), and the end of the hollow pipe (12) is provided with a corrugated plate group (29).

8. A device for remotely measuring liquid level in a vacuum heating furnace by touch screen according to claim 1, characterized in that, The data processing device (24) includes a computer (10), and the computer (10) is connected with the resistance touch screen (8) through the MCU controller (9).

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