Pipeline type densimeter

Abstract

The invention discloses a pipeline type densimeter, and relates to the technical field of densimeters. The device comprises a connecting pipe, one end of the connecting pipe is fixedly connected with a flowmeter, the other end of the connecting pipe is fixedly connected with a microprocessor, mounting bins are symmetrically formed in the connecting pipe, a transmission channel communicating with the interior of the connecting pipe is formed between the two mounting bins, and a driving gear is rotationally connected into one mounting bin; and a driven gear is rotationally connected to the interior of the other mounting bin, and a driving motor is fixedly connected to one end of the connecting pipe. When the driving motor is started to drive the driving gear to be meshed with the driven gear, fluid is drawn to stably penetrate through the interior of the connecting pipe, and the temperature compensation mechanism is matched to accurately adjust the temperature of the fluid, so that the fluidity of the fluid is improved, and stable flowing force is conveniently provided for the fluid penetrating through the interior of the connecting pipe; the problem that the stability and the reliability of the whole system are influenced due to low detection precision caused by adhesion and accumulation of fluid and the inner wall of the connecting pipe is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of density meters, and in particular to a pipeline density meter. Background Art

[0002] In modern industrial production, accurate measurement of fluid density is essential for product quality control, process optimization and safety monitoring. As a key industrial automation detection equipment, fluid density meters are widely used in many fields such as chemical industry, petroleum, food processing, and pharmaceuticals. These devices can monitor the density changes of fluids in real time and provide key data support for the production process. The fluidity of the fluid is an important factor affecting the accuracy of density measurement. In practical applications, insufficient fluidity of the fluid will lead to measurement errors, affecting the stability of the production process and product quality. Insufficient fluidity of the fluid may be due to the high viscosity characteristics of the fluid itself, or due to unreasonable pipeline design, uneven roughness of the inner wall of the pipeline, and complex internal structure of the pipeline. These problems will cause the flow of the fluid in the pipeline to be blocked, forming a stagnation area, which will affect the uniformity and continuity of the fluid, and ultimately lead to inaccurate density measurement. Insufficient fluidity of the fluid may also lead to corrosion, scaling and biofilm formation on the inner wall of the pipeline. These problems will further aggravate the unevenness of the fluid flow, increase the friction between the fluid and the inner wall of the pipeline, and cause energy loss and pressure drop. In some cases, insufficient fluidity of the fluid may also cause pipeline blockage and production interruption. Therefore, improving the fluidity of the fluid and reducing the friction between the fluid and the inner wall of the pipe are of great significance to ensuring the measurement accuracy of the density meter and extending the service life of the equipment.

[0003] The mainstream online density meters on the market mainly include differential pressure type, ultrasonic type, vibration tube type, radioisotope density meter, capacitive density meter, etc. The differential pressure density meter calculates the density by measuring the pressure difference between two points of the fluid in the pipeline. Its advantages are simple structure and low cost, but its disadvantages are low measurement accuracy in low-density fluids and high requirements for fluid fluidity. The ultrasonic density meter measures the density by using the relationship between the propagation speed of sound waves in the fluid and the fluid density. Its advantages are that it is not affected by temperature changes and has high measurement accuracy, but the cost is relatively high, and there are certain requirements for fluid fluidity. The vibration tube density meter calculates the density by measuring the change in the vibration frequency of the vibration tube in the fluid. Its advantages are high sensitivity and fast response speed, but it is easily disturbed by the environment and has high requirements for fluid fluidity. The radioisotope density meter uses the decay principle of radioisotopes to measure density. Its advantages are wide measurement range, but there is a risk of radioactive contamination. The capacitive density meter calculates the density by measuring the dielectric constant of the fluid. Its advantages are high measurement accuracy and fast response speed, but there are certain requirements for the conductivity of the fluid. These technologies have their own advantages and disadvantages, but their measurement accuracy and stability will be affected when the fluidity is insufficient. Therefore, how to improve the fluidity of the fluid and reduce the friction between the fluid and the inner wall of the pipe is the key to improving the measurement accuracy of the density meter.

[0004] Although existing density meter technology plays an important role in the industrial field, due to the friction resistance between the fluid and the pipeline and the influence of the fluid's own viscosity, with long-term use, the fluid will be retained and accumulated inside the density meter, thereby affecting the fluidity of the fluid, resulting in reduced detection accuracy, and further affecting the stability and reliability of the entire system. Summary of the invention

[0005] The purpose of the present application is to provide a pipeline density meter to solve the problem that due to the friction resistance between the fluid and the pipeline and the viscosity of the fluid itself, the fluid will be retained and accumulated inside the density meter over a long period of time, thereby affecting the fluidity of the fluid, resulting in reduced detection accuracy, and further affecting the stability and reliability of the entire system.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A pipeline density meter comprises a connecting pipe, one end of the connecting pipe is fixedly connected to a flow meter, the other end of the connecting pipe is fixedly connected to a microprocessor, the interior of the connecting pipe is symmetrically provided with installation chambers, a transmission channel connected to the interior of the connecting pipe is provided between the two installation chambers, the interior of one of the installation chambers is rotatably connected to a driving gear, and the interior of the other installation chamber is rotatably connected to a driven gear, one end of the connecting pipe is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to the driving gear, the other end of the connecting pipe is provided with a heating groove, the detection end of the flow meter is fixedly connected to a pressure sensor, the microprocessor is electrically connected to the flow meter and the pressure sensor, and a temperature compensation mechanism is installed inside the heating groove.

[0007] By adopting the above technical solution, by setting up the temperature compensation mechanism and cooperating with the driving gear and the driven gear, it is convenient to pump the fluid stably through the inside of the connecting pipe when the driving motor is started to drive the driving gear and the driven gear to engage, and cooperate with the temperature compensation mechanism to accurately adjust the fluid temperature to improve the fluidity of the fluid, and then use the flow meter in conjunction with the pressure sensor to monitor the flow rate and fluid pressure of the fluid passing through the inside of the connecting pipe, and use the microprocessor to collect data from the flow meter, pressure sensor and temperature compensation mechanism, and calculate the actual density value of the fluid through the built-in algorithm, so as to provide a stable flow force for the fluid passing through the inside of the connecting pipe, reduce the adhesion and accumulation of the fluid and the inner wall of the connecting pipe, resulting in reduced detection accuracy, thereby affecting the stability and reliability of the entire system.

[0008] Furthermore, the temperature compensation mechanism includes an annular heat exchange plate fixedly connected to one end of the heating groove, an electric heating wire is fixedly connected to the inside of the heating groove, the electric heating wire is in contact with the inner wall of the annular heat exchange plate, and an adjustment component is installed inside the heating groove.

[0009] By adopting the above technical solution, by setting the adjustment component for use with the annular heat exchange plate and the electric heating wire, when the drive motor is started to drive the fluid to stably pass through the inside of the annular heat exchange plate, the adjustment component controls the start of the electric heating wire according to the real-time temperature of the fluid, so that the electric heating wire self-starts to generate heat and cooperates with the annular heat exchange plate to contact and exchange heat with the fluid, thereby facilitating the adjustment of the temperature of the fluid passing through the inside of the connecting pipe, so that the fluid temperature remains constant, so as to further maintain the fluidity of the fluid and reduce the situation where the fluid adheres to the inside of the connecting pipe and reduces the fluidity.

[0010] Furthermore, the regulating component includes a PID control group fixedly connected to the inside of the heating tank, the PID control group is electrically connected to the electric heating wire, one end of the microprocessor is fixedly connected to a temperature sensor, and the microprocessor is electrically connected to the temperature sensor and the PID control group.

[0011] By adopting the above technical solution and setting up the coordinated use of the temperature sensor and the PID control group, it is convenient to use the temperature sensor in conjunction with the microprocessor to monitor and analyze the temperature changes of the fluid in real time, and to cooperate with the PID control group to remotely control the start and stop of the electric heating wire, so as to accurately regulate the temperature of the fluid passing through the inside of the connecting pipe, ensuring that the fluid temperature remains constant throughout the test, thereby effectively maintaining the fluidity of the fluid as it passes through the inside of the connecting pipe.

[0012] Furthermore, a plurality of heat exchange fins are evenly and fixedly connected to the inner side of the annular heat exchange plate, and the plurality of heat exchange fins are arranged in a circular shape.

[0013] By adopting the above technical solution, by arranging the coordinated use of heat exchange fins and annular heat exchange plates, the fluid contacts and exchanges heat with the surface of the heat exchange fins when passing through the interior of the annular heat exchange plate, thereby effectively increasing the contact and heat exchange area between the annular heat exchange plate and the fluid, improving the heat exchange efficiency of the surface of the annular heat exchange plate, and improving the practicability of the device.

[0014] Furthermore, a thermal insulation rock wool sheet is fixedly connected to the inner side of the heating tank, and the electric heating wire is installed on the inner side of the thermal insulation rock wool sheet.

[0015] By adopting the above technical scheme, by arranging the use of thermal insulation rock wool sheets and electric heating wires, the thermal insulation rock wool sheets wrap the inner side of the heating tank, thereby effectively reducing the heat exchange between the inside and outside of the heating tank, improving the utilization efficiency of the heat generated by the electric heating wire, and improving the practicability of the device.

[0016] Furthermore, a plurality of sparse and dense protrusions are evenly and fixedly connected to the inner side of the connecting tube.

[0017] By adopting the above technical solution, the roughness of the inner wall of the connecting tube is changed by setting sparse and dense protrusions, so that when the fluid passes through the inside of the connecting tube, the adhesion between the fluid molecules is broken, the adhesion, retention and accumulation between the fluid and the inner wall of the connecting tube are reduced, and the fluid transportation efficiency is improved.

[0018] Furthermore, the inner side of the connecting pipe and the surfaces of the driving gear, the driven gear, and the sparse and dense protrusions are all coated with epoxy resin coating.

[0019] By adopting the above technical solution and arranging the epoxy resin coating for use with the device, the corrosion resistance of the device is effectively improved and the service life of the device is extended.

[0020] Furthermore, the surface of the connecting pipe is coated with a silicone waterproof coating.

[0021] By adopting the above technical solution and providing an organosilicon waterproof coating, the corrosion resistance of the device is effectively improved, and the service life of the device is further extended.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. By setting up the temperature compensation mechanism and cooperating with the driving gear and the driven gear, it is convenient to pump the fluid stably through the inside of the connecting pipe when the driving motor is started to drive the driving gear and the driven gear to engage, and cooperate with the temperature compensation mechanism to accurately adjust the fluid temperature to improve the fluidity of the fluid, and then use the flow meter in conjunction with the pressure sensor to monitor the flow rate and fluid pressure of the fluid passing through the inside of the connecting pipe. At the same time, a microprocessor is used to collect data from the flow meter, pressure sensor, and temperature compensation mechanism, and the actual density value of the fluid is calculated through a built-in algorithm, so as to provide a stable flow force for the fluid passing through the inside of the connecting pipe, reduce the adhesion and accumulation of the fluid and the inner wall of the connecting pipe, resulting in reduced detection accuracy, thereby affecting the stability and reliability of the entire system.

[0023] 2. By setting up the adjustment component for use with the annular heat exchange plate and the electric heating wire, when the start-up drive motor drives the fluid to stably pass through the inside of the annular heat exchange plate, the adjustment component controls the start of the electric heating wire according to the real-time temperature of the fluid, so that the electric heating wire self-starts to generate heat and cooperates with the annular heat exchange plate to contact and exchange heat with the fluid, thereby facilitating the adjustment of the temperature of the fluid passing through the inside of the connecting pipe, so that the fluid temperature remains constant, so as to further maintain the fluidity of the fluid and reduce the situation where the fluid adheres to the inside of the connecting pipe and reduces the fluidity.

[0024] 3. By setting up the coordinated use of the temperature sensor and the PID control group, it is convenient to use the temperature sensor in conjunction with the microprocessor to monitor and analyze the temperature changes of the fluid in real time, and cooperate with the PID control group to remotely control the start and stop of the electric heating wire, so as to accurately control the temperature of the fluid passing through the inside of the connecting pipe, ensuring that the fluid temperature remains constant throughout the test, thereby effectively maintaining the fluidity of the fluid when passing through the inside of the connecting pipe.

[0025] 4. By setting sparse and dense convex points to change the roughness of the inner wall of the connecting tube, when the fluid passes through the inside of the connecting tube, the adhesion between the fluid molecules is broken, the adhesion, retention and accumulation between the fluid and the inner wall of the connecting tube are reduced, and the fluid delivery efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0027] Figure 2 It is a schematic diagram of the internal structure of the connecting pipe in this application.

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the driving gear and the driven gear in this application.

[0029] Figure 4It is an exploded view of the internal structure of the installation bin in this application.

[0030] Figure 5 It is an exploded view of the internal structure of the heating tank in this application.

[0031] Description of reference numerals: 1. Connecting pipe; 2. Flow meter; 3. Microprocessor; 4. Installation compartment; 5. Transmission channel; 6. Driving gear; 7. Driven gear; 8. Driving motor; 9. Heating tank; 10. Pressure sensor; 11. Annular heat exchange plate; 12. Electric heating wire; 13. PID control group; 14. Temperature sensor; 15. Heat exchange fins; 16. Thermal insulation rock wool sheet; 17. Sparse and dense bumps. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 —5 Further details of this application are provided.

[0033] The embodiment of the present application discloses a pipeline density meter.

[0034] Reference Figure 1 - Figure 4 A pipeline density meter comprises a connecting pipe 1, one end of which is fixedly connected to a flow meter 2, the other end of which is fixedly connected to a microprocessor 3, the interior of the connecting pipe 1 is symmetrically provided with mounting chambers 4, a transmission channel 5 communicating with the interior of the connecting pipe 1 is provided between the two mounting chambers 4, a driving gear 6 is rotatably connected to the interior of one mounting chamber 4, a driven gear 7 is rotatably connected to the interior of the other mounting chamber 4, a driving motor 8 is fixedly connected to one end of the connecting pipe 1, an output end of the driving motor 8 is fixedly connected to the driving gear 6, a heating tank 9 is provided at the other end of the connecting pipe 1, a pressure sensor 10 is fixedly connected to the detection end of the flow meter 2, the microprocessor 3 is electrically connected to the flow meter 2 and the pressure sensor 10, and a temperature compensation mechanism is installed inside the heating tank 9.

[0035] When in use, first, when the fluid passes through the interior of the connecting pipe 1, the driving motor 8 is started to drive the driving gear 6 to rotate, and the driving gear 6 is driven to mesh with the driven gear 7, and at the same time, the driven gear 7 and the driving gear 6 are rotated in the opposite direction. At this time, a partial vacuum is generated at the end of the connecting pipe 1 away from the flow meter 2, and the fluid is sucked into the interior of the installation chamber 4, and with the rotation of the driving gear 6 and the driven gear 7, the fluid is pushed to pass through the installation chamber 4, and then the fluid passes through the transmission channel 5 and accelerates to flow into the interior of the connecting pipe 1 in the direction of the flow meter 2. Then, with the continuous meshing of the driving gear 6 and the driven gear 7, the fluid is continuously and stably input into the interior of the connecting pipe 1 to maintain the fluidity of the fluid when passing through the interior of the connecting pipe 1, and then the flow meter 2 is used to adjust the fluid pressure. The combined pressure sensor 10 monitors the flow rate and fluid pressure of the fluid passing through the connecting tube 1, and cooperates with the temperature compensation mechanism to accurately adjust the temperature of the fluid to eliminate the influence of external environmental temperature fluctuations, ensure that the fluid temperature remains constant during the entire test process, and maintain the fluidity of the fluid inside the connecting tube 1. At the same time, the microprocessor 3 is used to collect data from the flow meter 2, the pressure sensor 10, and the temperature compensation mechanism, and finally obtains the accurate density value of the fluid through a pre-programmed algorithm, so as to maintain a stable output of the fluid inside the connecting tube 1, thereby providing a stable flow force for the fluid passing through the connecting tube 1, reducing the adhesion and accumulation of the fluid and the inner wall of the connecting tube 1, resulting in reduced detection accuracy, thereby affecting the stability and reliability of the entire system.

[0036] Reference Figure 2 and Figure 3 , Figure 5 The temperature compensation mechanism includes an annular heat exchange plate 11 fixedly connected to one end of the heating tank 9, an electric heating wire 12 is fixedly connected to the interior of the heating tank 9, the electric heating wire 12 is in contact with the inner wall of the annular heat exchange plate 11, and an adjustment component is installed inside the heating tank 9; The regulating component includes a PID control group 13 fixedly connected to the inside of the heating tank 9, the PID control group 13 is electrically connected to the electric heating wire 12, one end of the microprocessor 3 is fixedly connected to a temperature sensor 14, and the microprocessor 3 is electrically connected to the temperature sensor 14 and the PID control group 13; Furthermore, a plurality of heat exchange fins 15 are evenly and fixedly connected to the inner side of the annular heat exchange plate 11 , and the plurality of heat exchange fins 15 are arranged in a circular shape.

[0037] When in use, when the driving motor 8 is started to drive the driving gear 6 to mesh with the driven gear 7 and convey the fluid through the interior of the connecting pipe 1, the flow meter 2 is first used to cooperate with the pressure sensor 10 and the temperature sensor 14 to perform an initial detection to obtain the preliminary pressure, temperature and flow data of the fluid. At this time, the temperature sensor 14 transmits the real-time monitored fluid temperature data to the microprocessor 3 for analysis. Then the fluid passes through the interior of the annular heat exchange plate 11 and is self-heated by starting the electric heating wire 12. At the same time, the annular heat exchange plate 11 absorbs the heat generated by the self-heating of the electric heating wire 12 and heats up, and transfers the heat to the surface of the heat exchange fins 15 to increase the contact area between the annular heat exchange plate 11 and the fluid. When the fluid enters the interior of the connecting pipe 1 and passes through the annular heat exchange plate 11, the fluid contacts and exchanges heat with the surfaces of the annular heat exchange plate 11 and the heat exchange fins 15 to heat the internal temperature of the fluid to a preset temperature point. At the same time, a temperature sensor 14 is set to continue to monitor the fluid temperature. When the fluid temperature changes, the PID control group 13 controls the electric heating wire 12 to further accurately control the temperature of the fluid to ensure that the fluid temperature remains constant during the entire test process. Finally, the processed fluid data is transmitted to the microprocessor 3, and processed by a pre-programmed algorithm to finally obtain the accurate density value of the fluid.

[0038] Reference Figure 2 - Figure 4 A thermal insulation rock wool sheet 16 is fixedly connected to the inner side of the heating tank 9 , and the electric heating wire 12 is installed on the inner side of the thermal insulation rock wool sheet 16 .

[0039] During use, when the electric heating wire 12 is started for self-heating, the inner side of the heating tank 9 is wrapped with the thermal insulation rock wool sheet 16, so that the heat generated by the electric heating wire 12 is accumulated inside the heating tank 9, and is in contact with the fluid for heat exchange through the annular heat exchange plate 11, while effectively reducing the heat exchange between the inside of the heating tank 9 and the outside of the connecting pipe 1, thereby effectively improving the thermal efficiency of the electric heating wire 12.

[0040] Reference Figure 2 - Figure 4 The inner side of the connecting tube 1 is evenly and fixedly connected with a plurality of sparse and dense protrusions 17 .

[0041] During use, when the drive motor 8 is started to drive the fluid through the transmission channel 5 into the interior of the connecting tube 1, the fluid flows along the inner wall of the connecting tube 1. At this time, the roughness of the inner wall of the connecting tube 1 is increased by setting sparse and dense protrusions 17, so that when the fluid contacts the surface of the sparse and dense protrusions 17, the adhesion between the fluid molecules is broken, thereby reducing the adhesion, retention and accumulation between the fluid and the inner wall of the connecting tube 1, changing the flow pattern of the fluid, and improving the fluid delivery efficiency.

[0042] Reference Figure 1 - Figure 3 The inner side of the connecting pipe 1 and the surfaces of the driving gear 6, the driven gear 7, and the sparse and dense protrusions 17 are all coated with epoxy resin coating.

[0043] When in use, epoxy resin coating is applied on the inner side of the connecting tube 1 and the surfaces of the driving gear 6, the driven gear 7 and the dense and sparse protrusions 17, so that the epoxy resin coating forms a chemical barrier on the inner side of the connecting tube 1 and the surfaces of the driving gear 6, the driven gear 7 and the dense and sparse protrusions 17, thereby reducing the corrosion of the inner side of the connecting tube 1 and the surfaces of the driving gear 6, the driven gear 7 and the dense and sparse protrusions 17 by acid and alkali solutions, thereby extending the service life of the device.

[0044] Reference Figure 1 and Figure 2 The surface of the connecting pipe 1 is coated with a silicone waterproof coating.

[0045] When in use, a silicone waterproof coating is coated on the surface of the connecting pipe 1 to form a waterproof protective layer on the surface of the connecting pipe 1, thereby effectively improving the corrosion resistance of the surface of the connecting pipe 1 and further extending the service life of the device.

[0046] The implementation principle of a pipeline density meter in this embodiment is as follows: first, when the fluid passes through the interior of the connecting pipe 1, the driving motor 8 is started to drive the driving gear 6 to rotate, and the driving gear 6 is driven to mesh with the driven gear 7, and at the same time, the driven gear 7 is made to rotate in the opposite direction to the driving gear 6. At this time, a partial vacuum is generated at the end of the connecting pipe 1 away from the flow meter 2, and the fluid is sucked into the interior of the installation chamber 4, and the rotation of the driving gear 6 and the driven gear 7 pushes the fluid to pass through the installation chamber 4, and then the fluid passes through the transmission channel 5 and accelerates to flow into the interior of the connecting pipe 1 in the direction of the flow meter 2. Then, as the driving gear 6 and the driven gear 7 continue to mesh, the fluid is continuously and stably input into the interior of the connecting pipe 1 to maintain the fluidity of the fluid when passing through the interior of the connecting pipe 1; Then, the flow meter 2 cooperates with the pressure sensor 10 and the temperature sensor 14 to perform the initial detection to obtain the preliminary pressure, temperature and flow data of the fluid. At this time, the temperature sensor 14 transmits the real-time monitored fluid temperature data to the microprocessor 3 for analysis. Then, the fluid passes through the inside of the annular heat exchange plate 11 and is self-heated by starting the electric heating wire 12. At the same time, the annular heat exchange plate 11 absorbs the heat generated by the self-heating of the electric heating wire 12 and heats up, and transfers the heat to the surface of the heat exchange fin 15 to increase the contact area between the annular heat exchange plate 11 and the fluid. When the fluid enters the connecting pipe 1 and passes through the annular heat exchange plate 11, the fluid contacts and exchanges heat with the annular heat exchange plate 11 and the surface of the heat exchange fins 15, so as to heat the internal temperature of the fluid to a preset temperature point. The heat-insulating rock wool sheet 16 is provided to wrap the inner side of the heating tank 9, so that the heat generated by the electric heating wire 12 is gathered inside the heating tank 9, and contacts and exchanges heat with the fluid through the annular heat exchange plate 11, and at the same time effectively reduces the heat exchange between the inside of the heating tank 9 and the outside of the connecting pipe 1, thereby effectively improving the thermal efficiency of the electric heating wire 12. At the same time, a temperature sensor 14 is set to continue to monitor the fluid temperature, and when the fluid temperature is lower than the preset value range, the PID control group 13 controls the electric heating wire 12 to continue to start heating the fluid, and then when the fluid temperature is higher than the preset value, the PID control group 13 controls the electric heating wire 12 to stop heating the fluid, so that the fluid temperature drops to the preset value range, so as to achieve further precise temperature control of the fluid temperature, ensure that the fluid temperature remains constant during the entire test process, and finally transmit the processed fluid data to the microprocessor 3, and finally obtain the accurate density value of the fluid through the pre-programmed algorithm processing; When the driving motor 8 is started to drive the fluid to pass through the transmission channel 5 and enter the interior of the connecting tube 1, the fluid flows along the inner wall of the connecting tube 1. At this time, the roughness of the inner wall of the connecting tube 1 is increased by setting the sparse and dense convex points 17, so that when the fluid contacts the surface of the sparse and dense convex points 17, the adhesion between the fluid molecules is broken, the adhesion, retention and accumulation between the fluid and the inner wall of the connecting tube 1 are reduced, the flow pattern of the fluid is changed, and the delivery efficiency of the fluid is improved; Epoxy resin coating is coated on the inner side of the connecting tube 1 and the surfaces of the driving gear 6, the driven gear 7 and the sparse and dense protrusions 17, so that the epoxy resin coating forms a chemical barrier on the inner side of the connecting tube 1 and the surfaces of the driving gear 6, the driven gear 7 and the sparse and dense protrusions 17, thereby reducing the corrosion of the inner side of the connecting tube 1 and the surfaces of the driving gear 6, the driven gear 7 and the sparse and dense protrusions 17 by acid and alkali solutions.

Claims

1. A pipeline densitometer, comprising a connecting pipe (1), characterized in that: One end of the connecting tube (1) is fixedly connected to a flow meter (2), the other end of the connecting tube (1) is fixedly connected to a microprocessor (3), the interior of the connecting tube (1) is symmetrically provided with mounting chambers (4), a transmission channel (5) communicating with the interior of the connecting tube (1) is provided between the two mounting chambers (4), the interior of one mounting chamber (4) is rotatably connected to a driving gear (6), the interior of the other mounting chamber (4) is rotatably connected to a driven gear (7), one end of the connecting tube (1) is fixedly connected to a driving motor (8), the output end of the driving motor (8) is fixedly connected to the driving gear (6), the other end of the connecting tube (1) is provided with a heating groove (9), the detection end of the flow meter (2) is fixedly connected to a pressure sensor (10), the microprocessor (3) is electrically connected to the flow meter (2) and the pressure sensor (10), and a temperature compensation mechanism is installed inside the heating groove (9).

2. A pipeline density meter according to claim 1, characterized in that: The temperature compensation mechanism comprises an annular heat exchange plate (11) fixedly connected to one end of the heating groove (9), an electric heating wire (12) fixedly connected to the interior of the heating groove (9), the electric heating wire (12) being in contact with the inner wall of the annular heat exchange plate (11), and an adjustment component being installed inside the heating groove (9).

3. A pipeline density meter according to claim 2, characterized in that: The regulating component comprises a PID control group (13) fixedly connected to the interior of the heating tank (9), the PID control group (13) being electrically connected to the electric heating wire (12), one end of the microprocessor (3) being fixedly connected to a temperature sensor (14), the microprocessor (3) being electrically connected to the temperature sensor (14) and the PID control group (13).

4. A pipeline density meter according to claim 2, characterized in that: A plurality of heat exchange fins (15) are evenly and fixedly connected to the inner side of the annular heat exchange plate (11), and the plurality of heat exchange fins (15) are arranged in a circular shape.

5. A pipeline density meter according to claim 2, characterized in that: A thermal insulation rock wool sheet (16) is fixedly connected to the inner side of the heating groove (9), and the electric heating wire (12) is installed on the inner side of the thermal insulation rock wool sheet (16).

6. A pipeline density meter according to claim 1, characterized in that: The inner side of the connecting tube (1) is evenly and fixedly connected with a plurality of sparsely spaced protrusions (17).

7. A pipeline density meter according to claim 1, characterized in that: The inner side of the connecting tube (1) and the surfaces of the driving gear (6), the driven gear (7), and the sparse and dense protrusions (17) are all coated with epoxy resin paint.

8. A pipeline density meter according to claim 1, characterized in that: The surface of the connecting pipe (1) is coated with an organic silicon waterproof coating.

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