Organic heat carrier boiler medium aging detection early warning device and early warning system thereof
By using glass cylinder and eccentric identification components in the thermal oil medium detection device, combined with electromagnets and photoelectric sensors, the rapid and accurate detection of the kinematic viscosity of the thermal oil medium is achieved, and the problems of low measurement accuracy and frequent eccentricity in the prior art are solved, ensuring the normal operation of the boiler and the accuracy of aging detection.
Patent Information
- Application Number
- CN202411844905.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-04-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing kinematic viscosity detection device of thermal oil medium has low measurement accuracy, especially the ball-falling method is prone to eccentricity, which leads to uncertain measurement results, and it is impossible to quickly and accurately determine whether the rigid balls are eccentricity during the falling process.
An early warning device for aging detection and warning of organic heat carrier boiler media is designed, using glass cylinders and eccentric identification components to detect the whereabouts of rigid balls through electromagnets and photoelectric sensors, identify eccentric movements, and realize accurate detection and data calculations through motors and drive screws.
It realizes rapid and accurate detection of the kinetic viscosity of the thermal oil medium, can timely judge the aging degree of thermal oil, ensure the normal operation of the boiler, reduce unnecessary repeated detection processes, and greatly improve the detection and warning speed.
Smart Images
Figure CN119804227A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of medium detection of organic heat carrier boilers, and in particular relates to an organic heat carrier boiler medium aging detection and early warning device and an early warning system thereof. Background Art
[0002] An organic heat carrier boiler refers to a boiler that uses heat transfer oil for heating. Heat transfer oil, also known as organic heat carrier or heat medium oil, has been used as an intermediate heat transfer medium in industrial heat exchange processes for more than 50 years. A direct current boiler developed based on the design concept of forced circulation. Generally, coal, oil, and gas are used as fuel, and heat transfer oil is used as the medium. A hot oil circulation oil pump is used to force the medium to circulate in the liquid phase, and the heat energy is transported to the heat-using equipment and then returned to the heating furnace for reheating. It has the characteristics of obtaining a high working temperature under low pressure and being able to perform high-precision control of the medium operation. The application scope of organic heat carrier boilers is becoming wider and wider, and the number of uses is increasing rapidly, and it is showing a growing trend. However, as the organic heat medium of the boiler, heat transfer oil will have a certain impact on the service life of the heat transfer oil after long-term use, so that the heat transfer oil may age and deteriorate. Therefore, it is necessary to perform aging detection on the heat transfer oil medium of the organic heat carrier boiler to ensure the normal operation of the boiler.
[0003] At present, the main performance indicators for judging whether the heat transfer oil can be used normally include kinematic viscosity, flash point, ignition point, residual carbon, acid value, moisture, initial distillation point and distillation range, copper corrosion, mechanical impurity density, ash content, thermal stability, maximum operating temperature (some imported synthetic heat transfer oils are oil film temperature and oil core temperature), etc. However, the kinematic viscosity of the heat transfer oil has a very large impact on the normal operation of the boiler. Viscosity refers to the thinness and fluidity of the heat transfer oil under specified conditions. The greater the viscosity, the worse the fluidity of the oil, and the greater the power of the circulating pump required for pipeline transmission. However, it is not the case that the lower the viscosity of the heat transfer oil, the better the quality. Some mineral heat transfer oils with lower viscosity are likely to contain more low-molecular straight-chain alkanes, which have poor thermal stability and are easily decomposed by heat. The stickiness after use is also related to temperature. Under normal circumstances, the viscosity of the oil decreases with increasing temperature. Therefore, the higher the operating temperature of the heat transfer oil, the greater the kinematic viscosity allowed. However, at a certain temperature, if the viscosity of the same heat transfer oil changes during use, it is likely to mean that the heat transfer oil has cracked or polymerized. When the viscosity increases greatly, the flow rate slows down, and the heat transfer oil fluid in the furnace tube gradually changes from turbulence to laminar flow. The boundary layer thickness continues to increase, resulting in a much higher boundary layer temperature than the mainstream temperature of the oil core, which in turn accelerates the decomposition of the heat transfer oil into a colloid with a higher viscosity. As a result, residual carbon is deposited on the tube wall, which affects heat transfer. In severe cases, it is easy to cause overheating of the tube wall and cause accidents. If the viscosity value changes by more than 15% of the original technical indicators, the organic heat carrier should no longer be used. The above shows that the longer the use time of the heat transfer oil medium, the higher the degree of aging, and the greater the impact on the boiler operation. Therefore, it is very important to detect and warn the degree of aging during the use of the heat transfer oil medium.
[0004] Most of the existing heat transfer oil medium kinematic viscosity detection devices detect the kinematic viscosity of the heat transfer oil through a vibration method, a falling ball method, a capillary method, and a rotation method. Among them, the falling ball method for detecting the kinematic viscosity of the heat transfer oil has a low measurement accuracy because the rigid ball falls at a very small speed in the heat transfer oil and is prone to eccentricity. The existing device cannot quickly and accurately determine whether the rigid ball is eccentric during the falling process during the detection process, which leads to uncertainty in the measurement result, ultimately affecting the normal use of the boiler and failing to play a warning role. For this reason, the present invention proposes an organic heat carrier boiler medium aging detection and warning device and its warning system. Summary of the invention
[0005] The purpose of the present invention is to provide an organic heat carrier boiler medium aging detection and early warning device and its early warning system, so as to solve the problem that most of the existing heat transfer oil medium kinematic viscosity detection devices detect the kinematic viscosity of the heat transfer oil through a vibration method, a falling ball method, a capillary method and a rotation method. Among them, the falling ball method is a method for detecting the kinematic viscosity of the heat transfer oil because the rigid ball falls at a very small speed in the heat transfer oil and is prone to eccentricity, so the measurement accuracy is low. The existing device cannot quickly and accurately determine whether the rigid ball is eccentric during the falling process during the detection process, which leads to uncertainty in the measurement result, ultimately affecting the normal use of the boiler and failing to play a warning role.
[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
[0007] The present invention is a medium aging detection and early warning device for an organic heat carrier boiler, comprising a glass cylinder, wherein the top and the bottom of the side of the glass cylinder are respectively provided with an oil inlet and an oil outlet, and an eccentric identification component is provided at the bottom of the glass cylinder, a bottom plate is installed on the top of the eccentric identification component, the side of the bottom plate faces the oil outlet, and the bottom plate has a certain thickness, and during the process of the detection and early warning device detecting the heat transfer oil medium, the side of the bottom plate seals the oil outlet;
[0008] The eccentric identification component includes a contact plate, which is movably installed at the center of the base plate and passes through the base plate. The bottom of the contact plate is welded to the top of the fixed column. Four first pins are installed in a circular array on the side surface of the fixed column. A movable part is sleeved on each of the first pins. One end of the movable part is connected to one end of a connecting arm. A second movable bearing is provided at the other end of the connecting arm. The second movable bearing is sleeved on a lifting screw rod. The top of the lifting screw rod passes through the third movable bearing to the top of the base plate.
[0009] Preferably, the oil inlet at the top of the glass cylinder is fixedly connected to one end of the oil inlet pipe, an oil inlet pump is installed on the oil inlet pipe, and the other end of the oil inlet pipe is connected to the heat transfer oil pipeline of the organic heat carrier boiler; the oil outlet at the bottom end of the peripheral side of the glass cylinder is fixedly connected to one end of the oil outlet pipe, an oil outlet pump is installed on the oil outlet pipe, and the other end of the oil outlet pipe is connected to the heat transfer oil pipeline of the organic heat carrier boiler.
[0010] Preferably, a mounting hole is opened at the center of the top of the glass cylinder, an electromagnet is fixedly installed inside the mounting hole, a central control component is welded on the top of the electromagnet, the electromagnet is located directly above the contact plate, and the electromagnet and the contact plate are located on the same central axis;
[0011] The first photoelectric sensor and the second photoelectric sensor are fixedly installed on the side surface of the glass tube. The first photoelectric sensor is located directly above the second photoelectric sensor. The first photoelectric sensor is adjacent to the electromagnet, and the second photoelectric sensor is adjacent to the contact plate.
[0012] Preferably, a mounting groove is provided at the center position of the bottom of the glass tube, the bottom of the mounting groove is fixedly connected to the motor, the top output end of the motor is fixedly connected to the bottom end of the driving screw, and a section of cylinder is also installed on the top of the driving screw, the length of the cylinder is shorter than the length of the driving screw, and a first movable bearing is sleeved on the cylinder, and the first movable bearing is installed in the notch of the cylindrical groove body opened at the bottom of the fixed column, and the length of the cylindrical groove body opened at the bottom of the fixed column is equal to the sum of the length of the cylinder and the driving screw.
[0013] Preferably, the movable part is provided with a rectangular hole, and the first pin shaft moves back and forth inside the rectangular hole; a circular hole is provided at the middle end of the connecting arm, and a second pin shaft is sleeved inside the circular hole, and both ends of the second pin shaft are connected to the fixing part, the fixing part is "U"-shaped, and the bottom of the fixing part is fixedly connected to the bottom surface of the glass tube.
[0014] Preferably, a movable groove is formed at one end of the connecting arm away from the movable member, a telescopic block is movably connected inside the movable groove, one end of the telescopic block is located outside the movable groove and is fixedly connected to one end of the adapting member, and the other end of the adapting member is fixedly connected to the outer surface of the second movable bearing;
[0015] The bottom surface of the glass tube is provided with four rotating grooves, each of which is rotatably connected to the bottom end of the lifting screw rod. The lower end of the lifting screw rod is a smooth surface, and the upper end has a threaded groove; the surface of the bottom plate is provided with four holes, each of which has a third movable bearing fixedly installed inside, and the third movable bearing is threadedly connected to the lifting screw rod.
[0016] An organic heat carrier boiler medium aging detection and early warning system includes a main control module, and a command module, an identification module, a calculation module, an analysis module and an early warning module that establish communication control connections with the main control module;
[0017] Main control module: used to establish a communication control connection with the early warning system through the central control element, and transmit the detection data and operation data of the early warning device to the other modules of the early warning system, and at the same time feed back the data commands issued by each module to the early warning device for operation;
[0018] Command module: used to issue an operation command to the early warning device, and control the early warning device to perform aging detection on the heat transfer medium when the organic heat carrier boiler is working;
[0019] Identification module: Based on the test result feedback from the early warning device, it is determined whether the rigid ball has eccentric movement during the test. If not, the test data is recorded and output to the calculation module to calculate the movement degree of the heat transfer oil at the current working temperature. If eccentric movement occurs, it is retested until no eccentric movement occurs.
[0020] Calculation module: used to calculate the kinematic viscosity of the heat transfer oil medium under the current working temperature state through the detection data of the early warning device, determine whether the kinematic viscosity exceeds the preset kinematic viscosity range in combination with the current working temperature, and send the calculation result to the early warning module;
[0021] Early warning module: used to compare the calculated kinematic viscosity data of the heat transfer oil medium at the current working temperature with the preset kinematic viscosity threshold. If the threshold is exceeded, an early warning is issued.
[0022] Preferably, it also includes a storage module: used to store different kinematic viscosity data of the heat transfer oil medium detected at different working temperatures, and form a kinematic viscosity detection table for organic heat carrier boiler staff to review.
[0023] Preferably, the calculation method for the kinematic viscosity of the heat transfer oil medium in the calculation module includes the following contents:
[0024] The kinematic viscosity of the heat transfer oil medium is shown in formula (1):
[0025]
[0026] Wherein, η is the kinematic viscosity of the heat transfer oil; d is the diameter of the rigid ball; ρ is the density of the heat transfer oil medium; ρ0 is the density of the rigid ball; u is the falling speed of the rigid ball; g is the acceleration of gravity; f w is the correction factor of the glass tube wall;
[0027] The correction coefficient of the glass tube wall is calculated using formula (2) and formula (3):
[0028] f w =1-2.104(d / D)+2.09(d / D) 3 -0.95(d / D) 5 (2)
[0029]
[0030] Wherein, L is the uniform falling distance of the rigid ball; t is the time for the rigid ball to uniformly fall, and the distance is the distance between the first photoelectric sensor and the second photoelectric sensor; D is the inner diameter of the glass cylinder;
[0031] Substituting equation (2) and equation (3) into equation (1), we can obtain:
[0032]
[0033] The present invention has the following beneficial effects:
[0034] 1. The present invention arranges the detection and early warning device on the heat transfer oil circulation pipeline of the organic heat carrier boiler, so that the kinematic viscosity of the heat transfer oil can be detected in real time during the operation of the organic heat carrier boiler, thereby timely judging the aging degree of the heat transfer oil, and finally ensuring the normal use of the organic heat carrier boiler.
[0035] 2. The present invention detects the kinematic viscosity data of the heat transfer oil medium by setting up a falling ball method, which can quickly and effectively calculate and detect the kinematic viscosity data of the heat transfer oil medium, and can repeatedly detect the heat transfer oil medium according to different temperatures of the heat transfer oil, which is convenient and effective.
[0036] 3. The present invention sets an eccentric identification component. When the detection starts, the horizontal plane of the bottom plate is above the horizontal plane of the oil outlet. After the heat transfer oil medium in the heat transfer oil circulation pipeline of the organic heat carrier boiler is pumped into the glass cylinder by the oil inlet pump, the bottom plate moves downward under the action of gravity until the bottom plate closes the oil outlet. At this time, the electromagnet is started to adsorb the rigid ball, and the rigid ball is adsorbed on the electromagnet. Since the electromagnet and the contact plate are located on the same central axis, therefore, when there is no heat transfer oil, the rigid ball will definitely fall on the contact plate. After the preparation is completed, the electromagnet is powered off, and the rigid ball falls freely in the heat transfer oil medium until it falls on the bottom plate or the contact plate. If it falls on the bottom plate, the electromagnet is restarted, which means that the rigid ball has an eccentric movement during the falling process. Then the detection is performed. If it falls on the contact plate, since the rigid ball falls slowly in the heat transfer oil, it does not fall on the contact plate. Rebound will occur. Under the action of gravity, the rigid ball presses the contact plate downward, and the starting motor drives the driving screw to rotate. At this time, the contact plate and the fixed column below continue to move downward, and the first movable bearing moves downward on the cylinder until it is threadedly connected to the driving screw. Driven by the rotation of the driving screw, the fixed column is driven to move downward continuously; at the same time, the fixed column and the second movable bearing connected by the connecting arm, when the fixed column moves downward, the second movable bearing at the other end moves upward until the second movable bearing is threadedly connected to the lifting screw thread groove, thereby driving the lifting screw to rotate during the continued upward movement of the second movable bearing, and the lifting screw rotates while driving the third movable bearing to slide downward, thereby driving the bottom plate to move downward at the same time, and the oil outlet is opened after the bottom plate moves downward, and the heat transfer oil medium inside the glass tube is discharged through the oil outlet, indicating that the heat transfer oil medium detection under this temperature state is completed. This structure can accurately identify whether the rigid ball is eccentric during the falling process, and make corresponding responses. If eccentricity occurs, the test is performed again. If no eccentricity occurs, it means that the test process is correct, and the heat transfer oil medium can be discharged and the heat transfer oil medium test can be carried out at the next temperature state, which reduces unnecessary repeated test processes and greatly improves the detection and warning speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0038] Figure 1 This is a schematic diagram of the overall structure of the organic heat carrier boiler medium aging detection and early warning device provided by the present invention;
[0039] Figure 2A schematic diagram of the front cross-sectional structure of the organic heat carrier boiler medium aging detection and early warning device provided by the present invention;
[0040] Figure 3 A schematic diagram of the structure of an eccentricity identification component of an organic heat carrier boiler medium aging detection and early warning device provided by the present invention;
[0041] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;
[0042] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle.
[0043] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0044] 1. Glass tube; 2. Oil inlet pipe; 3. Oil inlet pump; 4. Oil outlet pipe; 5. Oil outlet pump; 6. Rigid ball; 7. Central control element; 8. Electromagnet; 9. First photoelectric sensor; 10. Second photoelectric sensor; 11. Bottom plate; 12. Motor; 13. Driving screw; 14. Cylinder; 15. First movable bearing; 16. Fixed column; 17. Contact plate; 18. First pin shaft; 19. Movable part; 20. Connecting arm; 21. Second pin shaft; 22. Fixed part; 23. Telescopic block; 24. Adaptive part; 25. Second movable bearing; 26. Lifting screw; 27. Third movable bearing. DETAILED DESCRIPTION
[0045] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0048] See also Figure 1-5 The present invention is a medium aging detection and early warning device for an organic heat carrier boiler, comprising a glass cylinder 1, wherein the top and the bottom of the side of the glass cylinder 1 are respectively provided with an oil inlet and an oil outlet, and an eccentric identification component is provided at the bottom of the glass cylinder 1, a bottom plate 11 is installed on the top of the eccentric identification component, the side of the bottom plate 11 faces the oil outlet, and the bottom plate 11 has a certain thickness, and during the process of the detection and early warning device detecting the heat transfer oil medium, the side of the bottom plate 11 seals the oil outlet, the inside of the glass cylinder 1 is used to detect the kinematic viscosity data of the heat transfer oil, and the bottom plate 11 is used to carry the heat transfer oil;
[0049] The eccentric identification component includes a contact plate 17, which is movably installed at the center of the bottom plate 11 and penetrates the bottom plate 11. The bottom of the contact plate 17 is welded to the top of the fixed column 16. Four first pins 18 are installed in a circular array around the side of the fixed column 16. A movable part 19 is sleeved on each first pin 18. One end of the movable part 19 is connected to one end of a connecting arm 20. The other end of the connecting arm 20 is provided with a second movable bearing 25. The second movable bearing 25 is sleeved on a lifting screw rod 26. The top of the lifting screw rod 26 penetrates to the top of the bottom plate 11 through a third movable bearing 27. The contact plate 17 is used to contact with a rigid ball. The contact plate 17 and the bottom plate 11 are movably connected. The contact plate 17 first descends to a certain extent and then the bottom plate 11 descends, so as to avoid displacement of the rigid ball when the contact plate 17 and the bottom plate 11 descend at the same time. A groove is formed between the contact plate 17 that descends first and the bottom plate 11, which can block the possible displacement of the rigid ball.
[0050] Among them, the oil inlet at the top of the glass cylinder 1 is fixedly connected to one end of the oil inlet pipe 2, an oil inlet pump 3 is installed on the oil inlet pipe 2, and the other end of the oil inlet pipe 2 is connected to the heat transfer oil pipeline of the organic heat carrier boiler; the oil outlet at the bottom end of the side of the glass cylinder 1 is fixedly connected to one end of the oil outlet pipe 4, an oil outlet pump 5 is installed on the oil outlet pipe 4, and the other end of the oil outlet pipe 4 is connected to the heat transfer oil pipeline of the organic heat carrier boiler.
[0051] A mounting hole is provided at the center of the top of the glass tube 1, an electromagnet 8 is fixedly installed inside the mounting hole, a central control component 7 is welded on the top of the electromagnet 8, the electromagnet 8 is located directly above the contact plate 17, and the electromagnet 8 and the contact plate 17 are located on the same central axis;
[0052] A first photoelectric sensor 9 and a second photoelectric sensor 10 are fixedly installed on the side of the glass tube 1. The first photoelectric sensor 9 is located directly above the second photoelectric sensor 10. The first photoelectric sensor 9 is close to the electromagnet 8, and the second photoelectric sensor 10 is close to the contact plate 17. When the rigid ball falls, the electro-optical sensor is induced when passing by the first photoelectric sensor 9, and the electro-optical sensor is induced when passing by the second photoelectric sensor 10. The time difference between the induction of the two sensors is recorded, which is the time of the falling distance of the rigid ball.
[0053] Among them, a mounting groove is opened at the center position of the bottom of the glass tube 1, the bottom of the mounting groove is fixedly connected to the motor 12, the top output end of the motor 12 is fixedly connected to the bottom end of the driving screw 13, and a section of cylinder 14 is also installed on the top of the driving screw 13. The length of the cylinder 14 is shorter than the length of the driving screw 13. A first movable bearing 15 is sleeved on the cylinder 14, and the first movable bearing 15 is installed in the notch of the cylindrical groove body opened at the bottom of the fixed column 16. The length of the cylindrical groove body opened at the bottom of the fixed column 16 is equal to the sum of the lengths of the cylinder 14 and the driving screw 13.
[0054] Among them, the movable part 19 is provided with a rectangular hole, and the first pin shaft 18 moves back and forth inside the rectangular hole; a circular hole is provided at the middle end of the connecting arm 20, and a second pin shaft 21 is sleeved inside the circular hole. Both ends of the second pin shaft 21 are connected to the fixing part 22, and the fixing part 22 is "U"-shaped, and the bottom of the fixing part 22 is fixedly connected to the inner bottom surface of the glass tube 1.
[0055] The connecting arm 20 has a movable groove at one end away from the movable member 19, and a telescopic block 23 is movably connected inside the movable groove. The telescopic block 23 is located outside the movable groove and fixedly connected to one end of the adaptor 24, and the other end of the adaptor 24 is fixedly connected to the outer surface of the second movable bearing 25.
[0056] Four rotating grooves are provided on the bottom surface of the glass tube 1, and each rotating groove is rotatably connected to the bottom end of the lifting screw rod 26. The lower end of the lifting screw rod 26 is a smooth surface, and the upper end has a threaded groove; four holes are provided on the surface of the bottom plate 11, and a third movable bearing 27 is fixedly installed in each hole, and the third movable bearing 27 is threadedly connected to the lifting screw rod 26.
[0057] An organic heat carrier boiler medium aging detection and early warning system includes a main control module, and a command module, an identification module, a calculation module, an analysis module and an early warning module that establish communication control connections with the main control module;
[0058] Main control module: used to establish a communication control connection with the early warning system through the central control element, and transmit the detection data and operation data of the early warning device to the other modules of the early warning system, and at the same time feed back the data commands issued by each module to the early warning device for operation;
[0059] Command module: used to issue an operation command to the early warning device, and control the early warning device to perform aging detection on the heat transfer medium when the organic heat carrier boiler is working;
[0060] Identification module: Based on the test result feedback from the early warning device, it is determined whether the rigid ball has eccentric movement during the test. If not, the test data is recorded and output to the calculation module to calculate the movement degree of the heat transfer oil at the current working temperature. If eccentric movement occurs, it is retested until no eccentric movement occurs.
[0061] Calculation module: used to calculate the kinematic viscosity of the heat transfer oil medium under the current working temperature state through the detection data of the early warning device, determine whether the kinematic viscosity exceeds the preset kinematic viscosity range in combination with the current working temperature, and send the calculation result to the early warning module;
[0062] Early warning module: used to compare the calculated kinematic viscosity data of the heat transfer oil medium at the current working temperature with the preset kinematic viscosity threshold. If the threshold is exceeded, an early warning is issued.
[0063] Preferably, it also includes a storage module: used to store different kinematic viscosity data of the heat transfer oil medium detected at different working temperatures, and form a kinematic viscosity detection table for the organic heat carrier boiler staff to read.
[0064] Preferably, the calculation method for the kinematic viscosity of the heat transfer oil medium in the calculation module includes the following contents:
[0065] The kinematic viscosity of the heat transfer oil medium is shown in formula (1):
[0066]
[0067] Wherein, η is the kinematic viscosity of the heat transfer oil; d is the diameter of the rigid ball; ρ is the density of the heat transfer oil medium; ρ0 is the density of the rigid ball; u is the falling speed of the rigid ball; g is the acceleration of gravity; f w is the correction factor of the glass tube wall;
[0068] The correction coefficient of the glass tube wall is calculated using formula (2) and formula (3):
[0069] f w =1-2.104(d / D)+2.09(d / D) 3 -0.95(d / D) 5 (2)
[0070]
[0071] Wherein, L is the uniform falling distance of the rigid ball; t is the time for the rigid ball to uniformly fall, and the distance is the distance between the first photoelectric sensor and the second photoelectric sensor; D is the inner diameter of the glass cylinder;
[0072] Substituting equation (2) and equation (3) into equation (1), we can obtain:
[0073]
[0074] When personnel are using it, by setting the eccentric identification component, at the beginning of the test, the horizontal position of the bottom plate is above the horizontal plane of the oil outlet, and the heat transfer oil medium in the heat transfer oil circulation pipeline of the organic heat carrier boiler is pumped into the glass cylinder through the oil inlet pump. Under the action of gravity, the bottom plate moves downward until the bottom plate closes the oil outlet, and then the electromagnet is started to adsorb the rigid ball so that the rigid ball is adsorbed on the electromagnet. Since the electromagnet and the contact plate are located on the same central axis, therefore, when there is no heat transfer oil, the rigid ball will definitely fall on the contact plate. After the preparation is completed, the electromagnet is powered off, and the rigid ball falls freely in the heat transfer oil medium until it falls on the bottom plate or the contact plate. If it falls on the bottom plate, the electromagnet is restarted, which means that the rigid ball has eccentric movement during the falling process, and then the test is performed. If it falls on the contact plate, since the rigid ball falls slowly in the heat transfer oil, it falls on the contact plate and No rebound will occur. Under the action of gravity, the rigid ball presses the contact plate downward, and the starting motor drives the driving screw to rotate. At this time, the contact plate and the fixed column below continue to move downward, and the first movable bearing moves downward on the cylinder until it is threadedly connected to the driving screw. Driven by the rotation of the driving screw, the fixed column is driven to move downward continuously; at the same time, the fixed column and the second movable bearing connected by the connecting arm, when the fixed column moves downward, the second movable bearing at the other end moves upward until the second movable bearing is threadedly connected to the lifting screw thread groove, thereby driving the lifting screw to rotate during the continued upward movement of the second movable bearing, and the lifting screw rotates while driving the third movable bearing to slide downward, thereby driving the bottom plate to move downward at the same time, and the oil outlet is opened after the bottom plate moves downward, and the heat transfer oil medium inside the glass tube is discharged through the oil outlet, indicating that the heat transfer oil medium detection under this temperature state is completed.
[0075] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. An organic heat carrier boiler medium aging detection and early warning device, comprising a glass cylinder (1), characterized in that: The top and the bottom of the side of the glass cylinder (1) are respectively provided with an oil inlet and an oil outlet, and an eccentricity identification component is arranged at the bottom of the glass cylinder (1), a bottom plate (11) is installed on the top of the eccentricity identification component, the side of the bottom plate (11) faces the oil outlet, and the bottom plate (11) has a certain thickness, and when the detection and early warning device detects the heat transfer oil medium, the side of the bottom plate (11) seals the oil outlet; a rigid ball (6) is arranged in the glass cylinder (1); The eccentricity identification component comprises a contact plate (17), which is movably mounted at the center of the base plate (11) and penetrates the base plate (11), the bottom of the contact plate (17) is welded to the top of the fixed column (16), and four first pins (18) are mounted in a circular array on the side surface of the fixed column (16), each of the first pins (18) is sleeved with a movable member (19), one end of the movable member (19) is connected to one end of a connecting arm (20), and the other end of the connecting arm (20) is provided with a second movable bearing (25), the second movable bearing (25) is sleeved on the lifting screw rod (26), and the top of the lifting screw rod (26) penetrates to the top of the base plate (11) through a third movable bearing (27).
2. The organic heat carrier boiler medium aging detection and early warning device according to claim 1 is characterized in that: The oil inlet at the top of the glass cylinder (1) is fixedly connected to one end of an oil inlet pipe (2), an oil inlet pump (3) is installed on the oil inlet pipe (2), and the other end of the oil inlet pipe (2) is connected to a heat transfer oil pipeline of an organic heat carrier boiler; the oil outlet at the bottom end of the peripheral side of the glass cylinder (1) is fixedly connected to one end of an oil outlet pipe (4), an oil outlet pump (5) is installed on the oil outlet pipe (4), and the other end of the oil outlet pipe (4) is connected to a heat transfer oil pipeline of an organic heat carrier boiler.
3. The medium aging detection and early warning device for an organic heat carrier boiler according to claim 2 is characterized in that: A mounting hole is provided at the center of the top of the glass cylinder (1), an electromagnet (8) is fixedly installed inside the mounting hole, a central control component (7) is welded to the top of the electromagnet (8), the electromagnet (8) is located directly above the contact plate (17), and the electromagnet (8) and the contact plate (17) are located on the same central axis; A first photoelectric sensor (9) and a second photoelectric sensor (10) are fixedly mounted on the circumferential side of the glass cylinder (1), wherein the first photoelectric sensor (9) is located directly above the second photoelectric sensor (10); the first photoelectric sensor (9) is adjacent to the electromagnet (8), and the second photoelectric sensor (10) is adjacent to the contact plate (17).
4. The organic heat carrier boiler medium aging detection and early warning device according to claim 3 is characterized in that: A mounting groove is provided at the center of the bottom of the glass cylinder (1), the bottom of the mounting groove is fixedly connected to the motor (12), the top output end of the motor (12) is fixedly connected to the bottom end of the driving screw (13), a section of a cylinder (14) is also installed on the top of the driving screw (13), the length of the cylinder (14) is shorter than the length of the driving screw (13), a first movable bearing (15) is sleeved on the cylinder (14), the first movable bearing (15) is installed in the notch of the cylindrical groove body provided at the bottom of the fixed column (16), the length of the cylindrical groove body provided at the bottom of the fixed column (16) is equal to the sum of the lengths of the cylinder (14) and the driving screw (13).
5. The organic heat carrier boiler medium aging detection and early warning device according to claim 4 is characterized in that: The movable part (19) is provided with a rectangular hole, and the first pin shaft (18) moves back and forth inside the rectangular hole; the middle end of the connecting arm (20) is provided with a circular hole, and a second pin shaft (21) is sleeved inside the circular hole, and both ends of the second pin shaft (21) are connected to a fixing part (22), and the fixing part (22) is in a "U" shape, and the bottom of the fixing part (22) is fixedly connected to the inner bottom surface of the glass cylinder (1).
6. The medium aging detection and early warning device for an organic heat carrier boiler according to claim 5 is characterized in that: The connecting arm (20) is provided with a movable groove at one end away from the movable member (19), a telescopic block (23) is movably connected inside the movable groove, one end of the telescopic block (23) located outside the movable groove is fixedly connected to one end of the adapting member (24), and the other end of the adapting member (24) is fixedly connected to the outer surface of the second movable bearing (25); The bottom surface of the glass cylinder (1) is provided with four rotation grooves, each of which is rotationally connected to the bottom end of the lifting screw (26). The lower end of the lifting screw (26) is a smooth surface, and the upper end has a threaded groove. The surface of the bottom plate (11) is provided with four holes, each of which is fixedly installed with a third movable bearing (27), and the third movable bearing (27) is threadedly connected to the lifting screw (26).
7. An organic heat transfer medium boiler medium aging detection and early warning system, applied to the organic heat transfer medium boiler medium aging detection and early warning device described in claim 6, characterized in that: It includes a main control module, and a command module, an identification module, a calculation module, an analysis module and an early warning module that establish communication control connections with the main control module; Main control module: used to establish a communication control connection with the early warning system through the central control element, and transmit the detection data and operation data of the early warning device to the other modules of the early warning system, and at the same time feed back the data commands issued by each module to the early warning device for operation; Command module: used to issue an operation command to the early warning device, and control the early warning device to perform aging detection on the heat transfer medium when the organic heat carrier boiler is working; Identification module: Based on the test result feedback from the early warning device, it is determined whether the rigid ball has eccentric movement during the test. If not, the test data is recorded and output to the calculation module to calculate the movement degree of the heat transfer oil at the current working temperature. If eccentric movement occurs, it is retested until no eccentric movement occurs. Calculation module: used to calculate the kinematic viscosity of the heat transfer oil medium under the current working temperature state through the detection data of the early warning device, determine whether the kinematic viscosity exceeds the preset kinematic viscosity range in combination with the current working temperature, and send the calculation result to the early warning module; Early warning module: It is used to compare the kinematic viscosity data of the heat transfer oil medium at the current working temperature with the preset kinematic viscosity threshold value. If the threshold value is exceeded, an early warning is issued.
8. The medium aging detection and early warning device for an organic heat carrier boiler according to claim 7 is characterized in that: It also includes a storage module: used to store different kinematic viscosity data of the heat transfer oil medium detected at different working temperatures, and form a kinematic viscosity detection table for organic heat carrier boiler staff to review.
9. The medium aging detection and early warning device for an organic heat carrier boiler according to claim 8 is characterized in that: The calculation method for the kinematic viscosity of the heat transfer oil medium in the calculation module includes the following contents: The kinematic viscosity of the heat transfer oil medium is shown in formula (1): Wherein, η is the kinematic viscosity of the heat transfer oil; d is the diameter of the rigid ball; ρ is the density of the heat transfer oil medium; ρ0 is the density of the rigid ball; u is the falling speed of the rigid ball; g is the acceleration of gravity; f w is the correction factor of the glass tube wall; The correction coefficient of the glass tube wall is calculated using formula (2) and formula (3): f w =1-2.104(d / D)+2.09(d / D) 3 -0.95(d / D) 5 (2) Wherein, L is the uniform falling distance of the rigid ball; t is the time for the rigid ball to uniformly fall, and the distance is the distance between the first photoelectric sensor and the second photoelectric sensor; D is the inner diameter of the glass cylinder; Substituting equation (2) and equation (3) into equation (1), we can obtain: