Touch screen type device for remotely measuring liquid level of vacuum heating furnace

Abstract

The invention belongs to the field of crude oil transportation, and relates to a touch screen type device for remotely measuring the liquid level of a vacuum heating furnace. Comprising a shell, a resistive touch screen and a hollow circular tube are arranged on the shell, the hollow circular tube is communicated with the interior of a heating furnace to form a communicating vessel, a spring is arranged in the shell, the spring is connected with a hollow suspension block through a metering line, the spring is always in a stretching state, and the hollow suspension block is arranged in the hollow circular tube. And the spring can synchronously change the elongation, so that the metering line is always in a tensioned state. The metering line is connected with the pointer through the transmission device, the end part of the pointer is contacted with the resistive touch screen, and the resistive touch screen is connected with the data processing device. The metering line drives the pointer to move through the transmission device, the pointer slides on the resistive touch screen to generate an electric signal, the resistive touch screen transmits the generated electric signal to the data processing device for further data processing, and then the liquid level of softened water in the vacuum heating furnace is obtained.

Description

Technical Field

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

[0002] At the oil field site, the vacuum heating furnace is mainly used to heat crude oil, keep its temperature within a reasonable range during the gathering and transportation process, and prevent crude oil from condensing in the pipeline. The working principle of the vacuum heating furnace is to add a certain amount of softened water into the furnace, and the heat of combustion is transferred to the softened water through the combustion of fuel gas in the combustion chamber. The liquid softened water becomes gaseous water vapor after being heated. The water vapor flows in the gas phase. When it contacts the low-temperature coil, the water vapor transfers heat to the coil, and then the gaseous water vapor cools down and condenses into liquid softened water. This form of heat transfer is repeated in a cycle. The level of softened water needs to be strictly controlled between the combustion chamber and the coil to ensure the heat exchange effect in the vacuum heating furnace and the normal operation of the equipment. Since the interval between the combustion chamber and the coil is relatively short, about 60cm, it is necessary to measure and monitor the softened water level of the vacuum heating furnace in real time and accurately to ensure the normal heating of the vacuum heating furnace.

[0003] The original vacuum heating furnace level gauge mainly uses low-cost magnetic flap level gauges, which are installed on the outside of the vacuum heating furnace, reducing the insulation performance of the vacuum heating furnace, and affecting the material and waterproof performance of the entire panel in the low temperature environment in winter. Water vapor infiltrating the panel will cause frost on the panel glass surface, affecting the measurement of the liquid level. At the same time, the magnetic flap level gauge displays the liquid level by magnetically driving the flip column. Due to the influence of the width of the flip column, the accuracy of the liquid level is low, and the use environment of the magnetic flap level gauge is strict. The magnetic flap level gauge is easily interfered by magnetic substances and current signals in the environment, which affects the accuracy of the liquid level measurement.

[0004] As for the radar level meter, which is widely used at present, the environmental conditions will become more complicated when the liquid surface fluctuates and bubbles appear during the heating and softening process of water, causing the signal to scatter out of the propagation path or most of the energy to be absorbed, making the signal returned to the radar level meter's receiving antenna weaker or even no signal returned, which seriously affects the accuracy of the radar level meter.

[0005] That is, the current magnetic flap level gauge and radar level gauge are easily affected by the environment, resulting in inaccurate level measurement of the softened water in the vacuum heating furnace. Summary of the invention

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a touch screen type remote transmission device for measuring the liquid level of a vacuum heating furnace, which can accurately measure the liquid level of softened water in the vacuum heating furnace.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] The invention discloses a touch-screen remote transmission device for measuring the liquid level of a vacuum heating furnace, comprising a shell, a resistive touch screen and a hollow circular tube are arranged on the shell, a spring is arranged inside the shell, the spring is connected to a hollow suspension block through a metering line, the spring is always in a stretched state, the hollow suspension block is placed in the hollow circular tube, the metering line is connected to a pointer through a transmission device, the end of the pointer contacts the resistive touch screen, and the resistive touch screen is connected to a data processing device.

[0009] Furthermore, a fixed threaded shaft is provided on the shell, a threaded rotating structure is sleeved on the fixed threaded shaft, a metering line and a spring line are wound on the threaded rotating structure, and the spring line is connected to the spring.

[0010] Furthermore, the threaded rotation structure is provided with a medium diameter thread, a large diameter thread and a small diameter thread, the large diameter thread is wound with a design line, the small diameter thread is wound with a spring line, and a plurality of threaded support columns are arranged on the shell, which are engaged with the medium diameter thread.

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

[0012] Furthermore, the transmission device includes a spherical gear, and semicircular particles meshing with the spherical gear are arranged on the metering line. The spherical gear is penetrated by a central shaft, which is movably arranged on the shell, and a pointer is fixedly arranged on the central shaft, and the pointer is a Z-shaped structure.

[0013] Furthermore, a plurality of bearing support rings are arranged on the shell, fixed bearings are arranged inside the bearing support rings, and the fixed bearings are sleeved on the central rotating shaft.

[0014] Furthermore, a touch screen support frame is provided on the shell, and a resistive touch screen is provided on the touch screen support frame.

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

[0016] Furthermore, a hollow rubber ring and a hollow suspension block support ring are arranged in the hollow circular tube, the hollow rubber ring is sleeved on the metering line, the hollow suspension block is located between the hollow rubber ring and the hollow suspension block support ring, an exhaust hole and a drain port are opened on the hollow circular tube, the exhaust hole is located above the exhaust hole, the exhaust hole is located between the hollow rubber ring and the hollow suspension block support ring, and a corrugated plate group is arranged at the end of the hollow circular tube.

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

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

[0019] The present invention includes a shell, which is used to fix other components of the device and provide a relatively closed environment for the internal structure of the device, thereby avoiding the influence of the environment on the internal structure of the device. A resistive touch screen and a hollow circular tube are provided on the shell, and the hollow circular tube 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, the hollow suspension block is always in a floating state. A spring is provided in the shell, and the spring is connected to the hollow suspension block through a metering line. The spring is always in a stretched state. The hollow suspension block is placed in the hollow circular tube. When the hollow suspension block changes with the water level position of the softened water, the spring can change the elongation synchronously, so that the metering line is always in a tensioned state. The metering line is connected to a pointer through a transmission device, and the end of the pointer contacts the resistive touch screen, and the resistive touch screen is connected to a data processing device. When the metering line moves with the hollow suspension block, when the metering line drives the pointer to move through the transmission device, the pointer slides on the resistive touch screen, generates an electrical signal, and the resistive touch screen transmits the generated electrical signal to the data processing device for further data processing, thereby obtaining the liquid level of the softened water in the vacuum heating furnace. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Among them: 1. Fixed threaded shaft; 2. Threaded rotating structure; 3. Measuring line; 4. Fixed bearing; 5. Central rotating shaft; 6. Ball gear; 7. Pointer; 8. Resistive touch screen; 9. MCU controller; 10. Computer; 11. Hollow suspension block; 12. Hollow circular tube; 13. Shell; 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. Exhaust hole; 28. Hollow suspension block support ring; 29. ​​Corrugated plate group; 30. Support block; 31. Drain port. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0025] See also Figure 1 The present invention discloses a touch-screen remote transmission device for measuring the liquid level of a vacuum heating furnace, comprising a housing 13, which is used to fix other components of the device and provide a relatively closed environment for the internal structure of the device, thereby avoiding the influence of the environment on the internal structure of the device. A resistive touch screen 8 and a hollow circular tube 12 are arranged on the housing 13, and 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, it is ensured that the hollow suspension block 11 is always in a floating state. A spring 16 is arranged in the housing 13, and the spring 16 is connected to the 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 in the hollow circular tube 12. When the hollow suspension block 11 changes with the water level position of the softened water, the spring 16 can change the elongation synchronously, thereby making the metering line 3 always in a tensioned state. The metering line 3 is connected to the pointer 7 through a transmission device, and the end of the pointer 7 contacts the resistive touch screen 8, and the resistive touch screen 8 is connected to the data processing device 24. When the metering line 3 moves with the hollow suspension block 11, when the metering line 3 drives the pointer 7 to move through the transmission device, the pointer 7 slides on the resistive touch screen 8, generating an electrical signal, and 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 uses the principle of mechanics to reflect the real-time changes in the liquid level in the heating furnace through the real-time height changes of the hollow suspension block, and also uses the function of the touch screen to transmit signals, which can remotely monitor the changes in the liquid level in the vacuum heating furnace in real time, and can accurately calculate the true height of the liquid level, thereby ensuring that the liquid level in the furnace is within a safe height range during the operation of the heating furnace, which can not only ensure the normal heating of the heating furnace, but also effectively ensure the efficient and stable production of the oil and gas production site.

[0026] See also Figure 1In another feasible embodiment of the present invention, the following is adaptively modified according to the situation. It includes a housing 13, a resistive touch screen 8 and a hollow circular tube 12 are arranged on the housing 13, a spring 16 is arranged in the housing 13, the spring 16 is connected to the hollow suspension block 11 through the metering line 3, the spring 16 is always in a stretched state, the hollow suspension block 11 is placed in the hollow circular tube 12, the metering line 3 is connected to the pointer 7 through the transmission device, the end of the pointer 7 is in contact with the resistive touch screen 8, and the resistive touch screen 8 is connected to the data processing device 24.

[0027] The housing 13 is used to fix other components of the device and provide a relatively closed environment for the internal structure of the device to avoid the influence of the environment on the internal structure of the device. When used specifically, 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 is always floating on the surface of the softened water, that is, the hollow suspension block 11 can rise and fall synchronously with the liquid level. In the process of 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 straightened state, and the metering line 3 can move synchronously with the hollow suspension block 11. During the movement, the metering line 3 drives the pointer 7 through 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, and then obtains the liquid level of softened water in the vacuum heating furnace. The device can accurately measure the liquid level of softened water in the vacuum heating furnace and is less affected by the environment.

[0028] Embodiment 1:

[0029] See also Figure 1 The present embodiment discloses a touch-screen remote transmission device for measuring the liquid level of a vacuum heating furnace, comprising a shell 13, on which a resistive touch screen 8 and a hollow circular tube 12 are provided, a spring 16 is provided in the shell 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 in the hollow circular 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 touch screen 8, and the resistive touch screen 8 is connected to a data processing device 24.

[0030] The housing 13 is provided with a fixed threaded shaft 1, on which a threaded rotating structure 2 is sleeved, on which a metering line 3 and a spring line 15 are wound, and the spring line 15 is connected to a 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 line 15, and the threaded rotating structure 2 pulls the spring line 15, so that the spring line 15 is always in a tensioned 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. A plurality of threaded support columns 14 are arranged on the housing 13, and the threaded support columns 14 are engaged with the medium diameter thread 22.

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

[0033] Embodiment 2:

[0034] See also Figure 1 The present embodiment discloses a touch-screen remote transmission device for measuring the liquid level of a vacuum heating furnace, comprising a shell 13, on which a resistive touch screen 8 and a hollow circular tube 12 are provided, a spring 16 is provided in the shell 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 in the hollow circular 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 touch screen 8, and the resistive touch screen 8 is connected to a data processing device 24.

[0035] The transmission device includes a ball gear 6, which contacts the metering line 3, and the metering line 3 is provided with semicircular particles meshing with the ball gear 6. The ball gear 6 is provided with a central shaft 5, which is movably arranged on the housing 13, and a pointer 7 is fixedly provided on the central shaft 5. The pointer 7 is a Z-shaped structure. When the metering line 3 moves up and down, the metering line 3 drives the ball gear 6 to rotate, and the ball gear 6 drives the pointer 7 to rotate through the central shaft 5. The pointer 7 is a Z-shaped structure, and the end of the pointer 7 can be moved on the resistive touch screen 8 during the rotation process around the central shaft 5 as the axis.

[0036] A plurality of bearing support rings 19 are arranged on the housing 13 . A fixed bearing 4 is arranged inside the bearing support ring 19 . The fixed bearing 4 is sleeved on the central rotating shaft 5 .

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

[0038] Embodiment three:

[0039] See also Figure 1The present embodiment discloses a touch-screen remote transmission device for measuring the liquid level of a vacuum heating furnace, comprising a shell 13, on which a resistive touch screen 8 and a hollow circular tube 12 are provided, a spring 16 is provided in the shell 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 in the hollow circular 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 touch screen 8, and the resistive touch screen 8 is connected to a data processing device 24.

[0040] A fixed connecting plate 21 is provided on the housing 13. The fixed connecting plate 21 is used to fix the device at a suitable measuring position.

[0041] Embodiment 4:

[0042] See also Figure 1 The present embodiment discloses a touch-screen remote transmission device for measuring the liquid level of a vacuum heating furnace, comprising a shell 13, on which a resistive touch screen 8 and a hollow circular tube 12 are provided, a spring 16 is provided in the shell 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 in the hollow circular 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 touch screen 8, and the resistive touch screen 8 is connected to a data processing device 24.

[0043] A hollow rubber ring 26 and a hollow suspension block support ring 28 are arranged in the hollow circular tube 12. 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. An exhaust hole 27 and a drain port 31 are provided on the hollow circular tube 12. The exhaust hole 27 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. A corrugated plate group 29 is provided at the end of the hollow circular tube 12. When in 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 the softened water enters the hollow circular tube 12, the hollow suspension block 11 is located at its lowest position on the hollow suspension block support ring 28. The corrugated plate group 29 is conducive to preventing bubbles in the softened water from entering the interior of the hollow circular tube, and also reduces the scouring effect of liquid level fluctuations on the hollow suspension block.

[0044] Embodiment five:

[0045] See also Figure 1The present embodiment discloses a touch-screen remote transmission device for measuring the liquid level of a vacuum heating furnace, comprising a shell 13, on which a resistive touch screen 8 and a hollow circular tube 12 are provided, a spring 16 is provided in the shell 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 in the hollow circular 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 touch screen 8, and the resistive touch screen 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 touch screen 8 via an MCU controller 9. The electrical signal generated on the resistive touch screen 8 is transmitted to the computer 10 via the MCU controller 9, and the MCU controller 9 is used to transmit the real-time change data of the position of the pointer and the resistive touch screen point contact pressure sensor to the corresponding computer operation program.

[0047] Embodiment six:

[0048] See also Figure 1 The present embodiment discloses a touch-screen remote transmission device for measuring the liquid level of a vacuum heating furnace, comprising a shell 13, on which a fixed threaded shaft 1, a hollow circular 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 touch screen support frame 20 and a fixed connecting plate 21 are welded and fixed, and a threaded rotating structure 2 is connected to the fixed threaded shaft 1, and 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, and a metering line 3 and a spring line 15 are wound around the threaded rotating structure 2, and the metering line 3 is connected with a hollow suspension block 11 at the bottom, the metering line 3 is meshed with the ball gear 6 for transmission, the center line inside the ball gear 6 is connected with a central shaft 5, the central shaft 5 is connected with a fixed bearing 4, the end of the central shaft 5 is connected with a pointer 7, the pointer 7 is point-contact pressure sensing with a resistive touch screen 8, the resistive touch screen 8 is connected with an MCU controller 9 via a data line, and the MCU controller 9 is connected with a computer 10 via a data line, 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 circular tube 12, and one end of the fixed pulley support plate 18 is connected with a fixed pulley 17.

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

[0050] Preferably, the thread profile of the fixed threaded shaft 1 is a triangular thread, and the thread profile, major diameter, medium 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 the internal threads thereon to rotate as a whole around the fixed threaded shaft 1, and the tooth profiles and pitches of all external threads on the threaded rotating structure 2 are consistent with the corresponding parameters of the internal threads.

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

[0053] Preferably, the external thread on the large diameter thread 23 is spirally wound around the metering line 3 at the bottom of the external thread from the left end to the right direction, and the external thread on the small diameter thread 25 is spirally wound around the spring line 15 at the bottom of the external thread from the right end to the left direction, and the total length of the metering line 3 and the spring line 15 will not change during operation.

[0054] Preferably, during the rotation of the threaded rotating structure 2, the relative positions of the vertical parts of the metering line 3 and the spring line 15 do not produce horizontal movement.

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

[0056] Preferably, the medium diameter threads 22 on the threaded rotating structure 2 and the threaded supporting columns 14 respectively connected perpendicularly to the housing 13 by threads prevent the threaded rotating structure 2 from eccentrically rotating.

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

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

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

[0060] Preferably, the hollow circular tube 12 consists of a vertical part and a horizontal part. A hollow rubber ring 26 that allows the metering line 3 to pass through is provided at the vertical connection between the hollow circular tube 12 and the shell 13. An exhaust hole 27 that is connected to the internal air of the vacuum heating furnace is provided at the upper end of the vertical part of the hollow circular tube 12. A hollow suspension block support ring 28 containing an air hole is provided at the bottom end of the vertical part of the hollow circular tube 12.

[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 horizontal corrugated plate group 29 is fixed at the end connecting opening of the horizontal portion of the hollow circular tube 12 .

[0062] Preferably, the fixed bearing 4 is fixed by a bearing support ring 19 vertically fixed on 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 on the housing 13 by connecting to the touch screen support frame 20 , and the resistive touch screen 8 always maintains vertical contact with the rotating pointer 7 .

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

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

[0066] 1. First, adjust and fix the device at the top position inside 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 circular tube is more than 10 mm lower than the top of the combustion chamber inside the heating furnace, and the position of the exhaust port at the top of the hollow circular tube is more than 10 mm higher than the bottom end of the heated coil inside the heating furnace, and the threaded shaft 1 is kept parallel to the bottom surface of the heating furnace and the hollow circular tube 12 is perpendicular to the bottom surface of the heating furnace by adjusting;

[0067] 2. After fixing the device inside the heating furnace, seal and insulate the heating furnace, connect the data line of the MCU controller from the heating furnace to the USB port of the computer, and then turn on the computer signal processing system and the real-time liquid level display interface, so that the data collected by the capacitive touch screen can be transmitted remotely in real time and displayed on the computer after the data is processed;

[0068] 3. The threaded rotating structure of the device is used as a transmission device for the line and a regulating device for the spring tension. Through the joint 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 the fixed horizontal threaded axis, wherein the spring tension keeps the metering line 3 in a straightened state at all times;

[0069] 4. When no water is added to the heating furnace, the hollow suspension block will fall on the hollow suspension block support ring at the bottom of the hollow circular tube because the spring tension of the device is less than the sum of the gravity 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 at the position between the top of the combustion chamber in the heating furnace and the bottom of the heated coil. Since the sum of the buoyancy and the spring tension of the hollow suspension block in the fully immersed state is greater than the sum of the gravity of the hollow suspension block and the gravity of the vertical length of the measuring line, the hollow suspension block moves upward, driving the threaded rotating structure 2 to rotate, and also causing the measuring line and the spring rope to expand and contract;

[0071] 6. The hollow suspension block on the hollow suspension block support ring at the lower part of the hollow circular tube will float on the water surface under the combined action of water buoyancy and spring tension, and finally maintain the balance of the three forces of gravity of the hollow suspension block and the vertical length of the metering line, the buoyancy of the hollow suspension block and the spring tension, so that the hollow suspension block is in an instantaneous static state of force balance;

[0072] 7. As the hollow suspension block floats up and down, the vertical length of the metering line 3 is expanded and contracted, and the intervals between the semicircular particles on the metering line just fit the semicircular particles on the spherical gear 6. Therefore, the expansion and contraction of the vertical length of the metering 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 shaft, the number of rotations of the ball gear can be obtained 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 resistive touch screen point contact pressure sensor to the corresponding computer operation 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 that the clockwise rotation of the pointer and the contact surface of the resistive touch screen is used to lower the liquid level, and the counterclockwise rotation is used to raise the liquid level. If the pointer rotates clockwise by a certain angle value at the next moment, the total relative rotation angle value before is subtracted from the rotation angle value at that moment, and if the pointer rotates counterclockwise by a certain angle value at the next moment, the total relative rotation angle value before is added to the rotation angle value at that moment;

[0076] 11. The total relative rotation angle value of the pointer under real-time working conditions is obtained through calculation. Since the moving length of the measuring line corresponding to the unit rotation angle of the pointer is known during the test, the total moving length L1 of the measuring line under real-time working conditions corresponding to the total relative rotation angle value under real-time working conditions is calculated by 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 this position and the bottom surface of the heating furnace is measured at that time. The total moving length L1 of the metering line and the distance L2 between the hollow suspension block at this position and the bottom surface of the heating furnace are summed to obtain the height value of the liquid level in the heating furnace under real-time working conditions;

[0078] 13. The liquid level height value calculated under real-time working conditions is displayed on the computer screen, and the maximum liquid level alarm value and the minimum liquid level alarm value are set at the same time to monitor the liquid level in real time to ensure that it is within the safe permitted range.

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

[0080] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace, characterized in that: The invention comprises a shell (13), a resistive touch screen (8) and a hollow circular tube (12) are arranged on the shell (13), a spring (16) is arranged in the shell (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 in the hollow circular tube (12), the metering line (3) is connected to a pointer (7) through a transmission device, the end of the pointer (7) contacts the resistive touch screen (8), and the resistive touch screen (8) is connected to a data processing device (24).

2. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 1, characterized in that: The housing (13) is provided with a fixed threaded shaft (1), a threaded rotating structure (2) is sleeved on the fixed threaded shaft (1), a metering line (3) and a spring line (15) are wound around the threaded rotating structure (2), and the spring line (15) is connected to a spring (16).

3. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 2, characterized in that: The threaded rotating structure (2) is provided with a medium diameter thread (22), a large diameter thread (23) and a small diameter thread (25); a measuring line (3) is wound around the large diameter thread (23); a spring line (15) is wound around the small diameter thread (25); a plurality of threaded support columns (14) are arranged on the housing (13); and the threaded support columns (14) are meshed with the medium diameter thread (22).

4. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 3, characterized in that: The housing (13) is provided with a fixed pulley support plate (18), a fixed pulley (17) is provided on the fixed pulley support plate (18), a spring (16) is arranged on the fixed pulley support plate (18), and a spring line (15) is wound around the fixed pulley (17).

5. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 1, characterized in that: The transmission device comprises a spherical gear (6), a semicircular particle meshing with the spherical gear (6) is arranged on the metering line (3), a central rotating shaft (5) is passed through the spherical gear (6), the central rotating shaft (5) is movably arranged on the housing (13), a pointer (7) is fixedly arranged on the central rotating shaft (5), and the pointer (7) is a Z-shaped structure.

6. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 5, characterized in that: A plurality of bearing support rings (19) are arranged on the housing (13), a fixed bearing (4) is arranged inside the bearing support ring (19), and the fixed bearing (4) is sleeved on the central rotating shaft (5).

7. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 6, characterized in that: A touch screen support frame (20) is provided on the housing (13), and a resistive touch screen (8) is provided on the touch screen support frame (20).

8. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 1, characterized in that: The housing (13) is provided with a fixed connecting plate (21).

9. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 1, characterized in that: The hollow circular tube (12) is provided 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); an exhaust hole (27) and a liquid discharge port (31) are provided on the hollow circular tube (12); the exhaust hole (27) 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 a corrugated plate group (29) is provided at the end of the hollow circular tube (12).

10. A touch screen remote transmission device for measuring the liquid level of a vacuum heating furnace as claimed in claim 1, characterized in that: The data processing device (24) comprises a computer (10), and the computer (10) is connected to a resistive touch screen (8) via an MCU controller (9).

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