CN111141350A - U-shaped tube mass flowmeter capable of resisting strong acid and alkali corrosive media and manufacturing method thereof - Google Patents
U-shaped tube mass flowmeter capable of resisting strong acid and alkali corrosive media and manufacturing method thereof Download PDFInfo
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- CN111141350A CN111141350A CN201911399918.7A CN201911399918A CN111141350A CN 111141350 A CN111141350 A CN 111141350A CN 201911399918 A CN201911399918 A CN 201911399918A CN 111141350 A CN111141350 A CN 111141350A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/006—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus characterised by the use of a particular material, e.g. anti-corrosive material
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
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Abstract
The invention belongs to the technical field of flowmeter manufacturing, and discloses a U-shaped pipe mass flowmeter capable of resisting strong acid and alkali corrosive media and a manufacturing method thereof.A sensor is manufactured in a welding mode; filling a TEFZELTEFZEL material in the internal liquid receiving part of the target coating sensor, and simultaneously filling the TEFZEL material in the same amount as that of the target coating sensor in the internal liquid receiving part of the profiling coating sensor; fixing the target coating sensor and the profiling coating sensor on two sides of the fixed plate seat by using a V-shaped clamping block and a bolt, and configuring a corresponding balancing weight according to the gravity center position of the sensor to keep the gravity center at the center of the fixed plate seat. The invention can measure some highly-oxidizing acid and alkaline media, and enlarges the application range of the mass flowmeter. The anti-corrosion mass flow meter has the advantages that the object-oriented surface of the anti-corrosion mass flow meter is enlarged, the roughness of the inner wall of the measuring pipe is reduced, and the flowing state of fluid media in the pipeline is facilitated.
Description
Technical Field
The invention belongs to the technical field of flowmeter manufacturing, and particularly relates to a U-shaped pipe mass flowmeter capable of resisting strong acid and alkali corrosive media and a manufacturing method thereof.
Background
Currently, the closest prior art: with the continuous improvement of the on-site process technology of petrochemical enterprises, the industrial on-site requires accurate measurement on a measuring instrument, and absolute safety is ensured when the measurement is required. The corrosion resistance of the metering instrument is an important index related to the safety of an industrial field. Because the industrial site of a petrochemical enterprise is generally an explosive environment, if the instruments do not have certain corrosion resistance, leakage accidents occur when corrosive media pass through, and the site suffers serious disasters.
The liquid receiving pipeline of the mass flowmeter used in the current market is mostly made of metal materials such as stainless steel, titanium or tantalum, and the like, and the main reasons are as follows: the metal materials such as stainless steel have poor resistance to the corrosivity of acid-base media or strong oxidizing media, titanium or tantalum alloys have strong corrosion resistance but the price of non-volatile raw materials is expensive, for example, hastelloy C22 has a price of 1000 yuan per kilogram, and stainless steel has a price of 30 yuan per kilogram. If a layer of corrosion-resistant non-metallic material with the target thickness can be coated on the surface of a material of a liquid receiving part of the mass flow meter, the corrosion resistance of the mass flow meter can be improved, and the price of the mass flow meter can be greatly reduced, so that the technology is certainly favored by mass flow meter manufacturers and users. The prior art mainly develops a novel metal material to manufacture a steel pipe so as to improve the corrosion resistance, and no scheme for solving related problems by adopting a coating process exists in the same industry at present.
Meanwhile, if the technology of coating TEFZEL (the structural formula of which is [ CH2-CH2-CF2-CF2] n, which is ethylene and tetrafluoroethylene) is applied to a mass flow meter, a large amount of market research is carried out in the industry, the TEFZEL can be directly sprayed on a liquid receiving part, but the following problems cannot be solved by the prior art at present: (1) the liquid receiving pipeline of the flowmeter is in a U-shaped sealing state, and anticorrosive materials are difficult to spray on the inner wall of the spraying pipeline; (2) the coating thickness is thin and uniform. The coating thickness is required to be within the range of 0.5 +/-0.05 mm in the mass flow meter, so that the anti-corrosion performance can be ensured, and the space of a pipeline is not excessively occupied; (3) the local separation of the coating from the metal substrate causes the signal distortion phenomenon of the mass flowmeter, thereby causing the loss of the function of the mass flowmeter.
In summary, the problems of the prior art are as follows:
(1) the liquid receiving pipeline of the existing flowmeter is in a U-shaped sealing state, and anticorrosive materials are difficult to spray on the inner wall of the spraying pipeline.
(2) The existing spraying pipeline has uneven coating thickness and poor corrosion resistance, and occupies too much pipeline space.
(3) The existing coating is partially separated from the metal substrate to cause the signal distortion phenomenon of the mass flowmeter, so that the function of the mass flowmeter is lost.
The difficulty of solving the technical problems is as follows: how to evenly coat the TEFZEL of certain thickness at U type pipeline inner wall, solve the problem of even coating and just can play good anticorrosive effect, enlarge mass flow meter's the scope of being suitable for the medium.
The significance of solving the technical problems is as follows: the invention can measure some highly-oxidizing acid and alkaline media, and enlarges the application range of the mass flowmeter.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a U-shaped pipe mass flowmeter capable of resisting strong acid and alkali corrosive media and a manufacturing method thereof.
The invention is realized in such a way that the manufacturing method of the U-shaped tube mass flowmeter capable of resisting strong acid and alkali corrosive media comprises the following steps:
firstly, welding and manufacturing a sensor, and filling a TEFZEL material in a liquid receiving part inside a target coating sensor; meanwhile, a liquid receiving part in the profiling coating sensor is filled with TEFZEL material with the same amount as that of the target coating sensor, and two ends of the sensor are sealed by using flange blind plates and bolts;
fixing the target coating sensor and the profiling coating sensor on two sides of the fixed plate seat by using a V-shaped clamping block and a bolt, and configuring a corresponding balancing weight according to the gravity center position of the sensor to keep the gravity center at the center of the fixed plate seat;
thirdly, fixing a spherical shell on each of two sides of the balancing weight by using bolts to complete the assembly of the coating chamber; placing the assembled coating chamber into a heating chamber, and closing a door of the heating chamber;
fourthly, starting a motor and a heating chamber of the speed reducer to rotate by taking a rotating shaft as a center, wherein the inner side of the heating chamber is provided with an irregular circular bulge, and the rotating direction of the coating chamber is changed randomly;
fifthly, electrifying a heating chamber heating layer for heating, and measuring the temperature by using a temperature sensor according to a temperature curve;
sixthly, turning off the heating device, continuing to work by the motor, and maintaining the coating chamber to rotate randomly until the temperature in the heating chamber is reduced to the room temperature;
and seventhly, opening the heating chamber, taking out the coating chamber, detaching the target coating sensor and the profiling coating sensor, and judging whether the coating operation meets the requirements or not by detecting the coating thickness of the profiling coating sensor.
Furthermore, when the target coating sensor and the profiling coating sensor are sprayed, one profiling coating sensor is arranged, an opening for opening a sensor pipeline is formed, and whether the sprayed anticorrosive material is uniform or not is checked.
Further, a motor is arranged outside the closed chamber, after the motor starts to operate, the motor starts to provide current for the heating layer to heat up, so that the temperature of the closed chamber rises to 180 degrees, the motor starts to rotate by taking the rotating shaft as a center, and in order to enable the coating chamber to freely rotate for 360 degrees, irregular circular bulges are arranged on the inner side of the heating chamber, and the rotating direction of the coating chamber is randomly changed.
Further, the TEFZEL raw material mass calculation formula [ pi (liquid receiving pipe inner diameter/2) 2-pi (17.5/2)2] x sensor liquid receiving part length x 1.72/1000.
Another object of the present invention is to provide a U-tube mass flowmeter manufactured by the method for manufacturing a U-tube mass flowmeter capable of resisting a strong acid and a basic corrosive medium, the U-tube mass flowmeter including: the device comprises a rotating shaft, a support, a heating chamber, a coating chamber, a heating layer, a temperature sensor, a speed reducer, a motor, a temperature controller, a fixed plate seat, a first V-shaped clamping block, a target coating sensor, a first balancing weight, a flange blind plate, a second V-shaped clamping block, a profiling coating sensor, a second balancing weight, a first spherical shell, a second spherical shell, stainless steel and an ethylene-tetrafluoroethylene film;
the rotating shaft is arranged on the bracket, connected with the speed reducer shaft, connected with the motor shaft, penetrates through the heating chamber, and is internally provided with a coating chamber, a heating layer and a temperature sensor which is connected with the temperature controller through a wire;
a first V-shaped clamping block, a target coating sensor and a first balancing weight are arranged on the fixed plate seat, and the first V-shaped clamping block is connected with the target coating sensor; the flange blind plate is arranged at one end of the target coating sensor, the second V-shaped clamping block is connected with the profiling coating sensor, the second balancing weight is placed on the fixed plate seat, and the first spherical shell and the second spherical shell are connected together; the inside of the stainless steel is coated with an ethylene-tetrafluoroethylene film.
Furthermore, the coating chamber is a circular sphere, the sphere comprises a target coating sensor and a profiling coating sensor, the target coating sensor and the profiling coating sensor are of symmetrical upper and lower structures, and the middle of the sphere is isolated by a fixed plate seat.
Further, the coating chamber is provided with a profiling coating sensor.
Further, the sealed chamber includes the heating chamber, and the coating room is placed to the heating chamber inside, and the heating layer has been laid to the inside bottom of heating chamber, and the sealed chamber outside is provided with the motor.
In summary, the advantages and positive effects of the invention are: the invention enlarges the object-oriented of the anticorrosion mass flow meter; the roughness of the inner wall of the measuring tube is reduced, the flowing state of the fluid medium in the pipeline is facilitated, and finally, the immeasurable benefit is brought to the improvement of the performance of the mass flowmeter.
The invention can measure some highly-oxidizing acid and alkaline media, and enlarges the application range of the mass flowmeter. The invention can also be applied to other industries needing corrosion resistance, and lays a foundation for saving resources and reducing cost.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a U-tube mass flowmeter capable of resisting strong acid and alkaline corrosive media according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a liquid receiving part inside a target coating sensor provided by an embodiment of the invention.
Fig. 3 is a schematic structural view of stainless steel provided in an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a heating chamber according to an embodiment of the present invention.
FIG. 5 is a schematic structural diagram of a coating chamber provided in an embodiment of the present invention;
in the figure: a. a target coating sensor top view; b. a conformal coating sensor top view; c. a front view of the coating chamber; d. the front view of the coating chamber removes the first and second spherical shell views; e. target coating sensor axonometric view.
Fig. 6 is a schematic structural diagram of a combined liquid receiving tube according to an embodiment of the present invention.
Fig. 7 is a temperature curve test chart provided by the embodiment of the invention.
In the figure: 1. a rotating shaft; 2. a support; 3. a heating chamber; 4. a coating chamber; 5. a heating layer; 6. a temperature sensor; 7. a speed reducer; 8. a motor; 9. a temperature controller; 10. a fixed plate seat; 11. a first V-shaped clamp block; 12. a target coating sensor; 13. a first weight block; 14. a flange blind plate; 15. a second V-shaped clamp block; 16. a profiling coating sensor; 17. a second counterweight block; 18. a first spherical housing; 19. a second spherical housing; 20. stainless steel; 21. an ethylene-tetrafluoroethylene film; 22. a combined liquid receiving pipe.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
Aiming at the problems in the prior art, the invention provides a U-shaped tube mass flowmeter capable of resisting strong acid and alkali corrosive media and a manufacturing method thereof, and the invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a method for manufacturing a U-shaped tube mass flowmeter capable of resisting strong acid and alkaline corrosive media according to an embodiment of the present invention includes the following steps:
s101: and (5) manufacturing the sensor in a welding mode.
S102: the TEFZEL material is filled in the liquid receiving part inside the target coating sensor, the amount of the material is increased by experience enrichment according to the amount required by target thickness calculation, meanwhile, the TEFZEL material with the same amount as that of the target coating sensor is filled in the liquid receiving part inside the profiling coating sensor, and the two ends of the sensor are sealed by flange blind plates and bolts to prevent the TEFZEL material from spilling.
S103: fixing the target coating sensor and the profiling coating sensor on two sides of a fixed plate seat by using a V-shaped clamping block and a bolt, and configuring corresponding balancing weights according to the gravity center position of the sensor to keep the gravity center at the center of the fixed plate seat;
s104: fixing a spherical shell on each of two sides of the balancing weight by bolts to complete the assembly of the coating chamber;
s105: placing the assembled coating chamber into a heating chamber, and closing a door of the heating chamber;
s106: starting a motor and a heating chamber of a speed reducer to rotate by taking a rotating shaft as a center, wherein the inner side of the heating chamber is provided with an irregular circular bulge, and the rotating direction of a coating chamber is changed randomly;
s107: the heating chamber heating layer is electrified for heating, the temperature is measured by a temperature sensor according to a temperature curve, and a temperature controller controls the temperature to ensure that the coating is completely attached;
s108: turning off the heating device, continuing to work by the motor, and maintaining the coating chamber to rotate randomly until the temperature in the heating chamber is reduced to room temperature;
s109: and opening the heating chamber, taking out the coating chamber, detaching the target coating sensor and the profiling coating sensor, and judging whether the coating operation meets the requirements or not by detecting the coating thickness of the profiling coating sensor.
In the preferred embodiment of the invention, the coating chamber is a circular sphere, which contains the target coating sensor and the profiling coating sensor in a symmetrical up-down structure separated by a fixed plate seat. When the target coating sensor and the profiling coating sensor are used for spraying, the pipeline is fully sealed, whether the spraying is uniform cannot be observed, the profiling coating sensor is arranged, the opening for opening the sensor pipeline is formed, and whether the spraying of the anticorrosive material is uniform can be detected.
In a preferred embodiment of the invention, the closed chamber comprises a heating chamber, the coating chamber is arranged in the heating chamber, the heating layer is laid on the bottom layer in the heating chamber, the motor is arranged outside the closed chamber, after the motor starts to operate, the motor starts to provide current for the heating layer to heat up, so that the temperature of the closed chamber is raised to 180 degrees, the motor starts to rotate by taking the rotating shaft as the center, in order to enable the coating chamber to freely rotate for 360 degrees, the inner side of the heating chamber is provided with irregular circular bulges, and the rotating direction of the coating chamber can be randomly changed. The method utilizes the principle of a ball mill. The temperature is increased by 180 degrees because the TEFZEL material becomes flowable after being heated in powder form, and the material can be uniformly coated in the pipe wall and finally attached in the pipe wall through irregular rotation.
As shown in fig. 2 to fig. 6, the U-tube mass flowmeter capable of resisting strong acid and alkaline corrosive media according to the embodiment of the present invention includes: the device comprises a rotating shaft 1, a support 2, a heating chamber 3, a coating chamber 4, a heating layer 5, a temperature sensor 6, a speed reducer 7, a motor 8, a temperature controller 9, a fixed plate seat 10, a first V-shaped clamp block 11, a target coating sensor 12, a first balance weight block 13, a flange blind plate 14, a second V-shaped clamp block 15, a profiling coating sensor 16, a second balance weight block 17, a first spherical shell 18, a second spherical shell 19, stainless steel 20, an ethylene-tetrafluoroethylene film 21 and a combined liquid receiving pipe 22.
The rotating shaft 1 is arranged on the support 2, the rotating shaft 1 is connected with a speed reducer 7 through a shaft, the speed reducer 7 is connected with a motor 8 through a shaft, the rotating shaft 1 penetrates through the heating chamber 3, a coating chamber 4, a heating layer 5 and a temperature sensor 6 are arranged inside the heating chamber 3, and the temperature sensor 6 is connected with a temperature controller 9 through a wire.
A first V-shaped clamp block 11, a target coating sensor 12 and a first balancing weight 13 are placed on the fixed plate base 10, and the first V-shaped clamp block 11 is connected with the target coating sensor 12; a flange blind plate 14 is arranged at one end of a target coating sensor 12, a second V-shaped clamping block 15 is connected with a profiling coating sensor 16, a second balancing weight 17 is placed on a fixed plate seat 10, and a first spherical shell 18 and a second spherical shell 19 are connected together; the stainless steel 20 is coated on the inside with an ethylene-tetrafluoroethylene film 21.
The technical solution of the present invention is further described with reference to the following specific examples.
The embodiment of the invention takes an S25 type sensor as an example, and specifically comprises the following steps:
1) the sensor S25 is fabricated by welding.
2) The target coated sensor internal receiver was filled with TEFZEL material, the S25 sensor receiver length was 950mm, the receiver internal diameter was 18.5mm, calculated as a TEFZEL coating thickness of 0.5 ± 0.05, the required TEFZEL feedstock mass was [ pi (18.5/2) 2-pi (17.5/2)2] x950x1.72 ÷ 1000 ÷ 46.2g, an additional 10% margin of 4.62g, the total TEFZEL material required to be filled was 50.82g, while the profile coated sensor internal receiver was also filled with 50.82g of TEFZEL material, both ends of the sensor were closed with blind flanges and bolts to prevent the TEFZEL material from spilling out.
3) Fixing the target coating sensor and the profiling coating sensor on two sides of the fixed plate seat by using a V-shaped clamping block and a bolt, and configuring a corresponding balancing weight according to the gravity center position of the sensor to keep the gravity center at the center of the fixed plate seat.
4) And fixing a spherical shell on each of two sides by using bolts to finish the assembly of the coating chamber.
5) The assembled coating chamber was placed in the heating chamber and the heating chamber door was closed.
6) The heating chamber of the starting motor starts to rotate by taking the rotating shaft as a center, and in order to enable the coating chamber to freely rotate in 360 degrees, the inner side of the heating chamber is provided with irregular circular bulges, and the rotating direction of the coating chamber can be randomly changed.
7) The heating chamber is heated by electrifying, the temperature is measured by the temperature sensor according to the temperature curve of figure 7, and the temperature controller controls the temperature to ensure the coating is completely attached.
8) And (4) turning off the heating device, continuing to work by the motor, and maintaining the coating chamber to rotate randomly until the temperature in the heating chamber is reduced to the room temperature.
9) And opening the heating chamber, taking out the coating chamber, detaching the target coating sensor and the profiling coating sensor, and judging whether the coating operation meets the requirements or not by detecting the coating thickness of the profiling coating sensor.
10) And finishing the manufacturing.
The technical effects of the present invention will be described in detail with reference to the experiments.
Table 1: s50 comparison of corrosion resistance duration and accuracy of liquid receiving part of mass flowmeter under different conditions and different liquid receiving part materials
1. The test is a corrosion test which is carried out after a medium is completely contacted with a liquid receiving part of the mass flowmeter and flange ports at two ends are plugged; "-" means the mass flowmeter has a metering accuracy of greater than + -0.5% and no repeatability. The Mass accuracy of the Mass flowmeter is seriously influenced by the reduction of the Mass of the liquid receiving part (Mass, the Mass is different from Quality) of the Mass flowmeter. The corrosion of the liquid receiving part by the medium is gradually carried out from inside to outside, and macroscopically, if the corrosion of the liquid receiving part by the medium is large, the liquid receiving part can be completely corroded after a certain time, so that the leakage of the liquid receiving part is completely caused. Since the liquid-receiving portion of the mass flow meter shows a loss of the measurement accuracy at the early stage of the corrosion, it is possible to judge whether or not the target medium-butting-liquid-receiving portion is corroded from the accuracy of the mass flow meter. The transmitter of the mass flowmeter can achieve intelligent judgment and alarm in time. Therefore, whether the material of the liquid receiving part is antiseptic or not can be judged through analyzing the accuracy data before and after the test of the mass flowmeter.
TABLE 2 selection of test target media
X: the medium and the liquid receiving part are incompatible; 0: the medium and the liquid receiving part are compatible in material; -: the compatibility of the medium and the liquid receiving part material is not concluded; note: compatibility means that the medium can exist in the structure of the liquid-receiving part material for a relatively long time without being corroded.
2. Data analysis, the following conclusions can be drawn by analyzing the data in table 1:
(1) when the liquid receiving part is made of stainless steel, 3 representative media respectively corrode the stainless steel, so that the mass flow meter loses the function of accurate metering.
(2) When the liquid receiving part is made of titanium and tantalum, 2 representative media respectively corrode the titanium and the tantalum, so that the mass flow meter loses the function of accurate metering.
(3) When the liquid receiving part is made of TEFZEL material, 3 representative media do not corrode the liquid receiving part of the mass flow meter within 24 months.
(4) The liquid receiving part also improves the metering accuracy of the mass flow meter by coating TEFZEL material on a stainless steel substrate.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. A manufacturing method of a U-shaped tube mass flowmeter capable of resisting strong acid and alkali corrosive media is characterized by comprising the following steps of:
firstly, welding and manufacturing a sensor, and filling a TEFZEL material in a liquid receiving part inside a target coating sensor; meanwhile, a liquid receiving part in the profiling coating sensor is filled with TEFZEL material with the same amount as that of the target coating sensor, and two ends of the sensor are sealed by using flange blind plates and bolts;
fixing the target coating sensor and the profiling coating sensor on two sides of the fixed plate seat by using a V-shaped clamping block and a bolt, and configuring a corresponding balancing weight according to the gravity center position of the sensor to keep the gravity center at the center of the fixed plate seat;
thirdly, fixing a spherical shell on each of two sides of the balancing weight by using bolts to complete the assembly of the coating chamber; placing the assembled coating chamber into a heating chamber, and closing a door of the heating chamber;
fourthly, starting a motor and a heating chamber of the speed reducer to rotate by taking a rotating shaft as a center, wherein the inner side of the heating chamber is provided with an irregular circular bulge, and the rotating direction of the coating chamber is changed randomly;
fifthly, electrifying a heating chamber heating layer for heating, and measuring the temperature by using a temperature sensor according to a temperature curve;
sixthly, turning off the heating device, continuing to work by the motor, and maintaining the coating chamber to rotate randomly until the temperature in the heating chamber is reduced to the room temperature;
and seventhly, opening the heating chamber, taking out the coating chamber, detaching the target coating sensor and the profiling coating sensor, and judging whether the coating operation meets the requirements or not by detecting the coating thickness of the profiling coating sensor.
2. The method for manufacturing a U-shaped tube mass flowmeter capable of resisting a strong acid and alkaline corrosive medium according to claim 1, wherein a profiling coating sensor is arranged on the target coating sensor and the profiling coating sensor during spraying, and the profiling coating sensor is provided with an opening for opening a sensor pipeline to check whether the sprayed anticorrosive material is uniform.
3. The method of claim 1, wherein a motor is disposed outside the closed chamber, and when the motor starts to operate, the motor starts to supply current to the heating layer to heat the closed chamber to 180 degrees, the motor starts to rotate around a rotation axis, and in order to allow the coating chamber to freely rotate 360 degrees, the inside of the heating chamber has irregular circular protrusions, and the rotation direction of the coating chamber is randomly changed.
4. The method of claim 1 wherein said TEFZEL raw material mass calculation formula [ pi (junction tube inner diameter/2) 2-pi (17.5/2)2] x sensor junction length x1.72 ÷ 1000.
5. A U-shaped tube mass flowmeter manufactured by the method for manufacturing a U-shaped tube mass flowmeter capable of resisting a strong acid and alkaline corrosive medium according to any one of claims 1 to 4, characterized by comprising: the device comprises a rotating shaft, a support, a heating chamber, a coating chamber, a heating layer, a temperature sensor, a speed reducer, a motor, a temperature controller, a fixed plate seat, a first V-shaped clamping block, a target coating sensor, a first balancing weight, a flange blind plate, a second V-shaped clamping block, a profiling coating sensor, a second balancing weight, a first spherical shell, a second spherical shell, stainless steel and an ethylene-tetrafluoroethylene film;
the rotating shaft is arranged on the bracket, connected with the speed reducer shaft, connected with the motor shaft, penetrates through the heating chamber, and is internally provided with a coating chamber, a heating layer and a temperature sensor which is connected with the temperature controller through a wire;
a first V-shaped clamping block, a target coating sensor and a first balancing weight are arranged on the fixed plate seat, and the first V-shaped clamping block is connected with the target coating sensor; the flange blind plate is arranged at one end of the target coating sensor, the second V-shaped clamping block is connected with the profiling coating sensor, the second balancing weight is placed on the fixed plate seat, and the first spherical shell and the second spherical shell are connected together; the inside of the stainless steel is coated with an ethylene-tetrafluoroethylene film.
6. A U-tube mass flow meter as in claim 5, wherein said coating chamber is a circular sphere containing said target coating sensor and said conformal coating sensor in a symmetrical top-bottom configuration separated by a stationary plate base.
7. The U-tube mass flow meter of claim 5, wherein the coating chamber is provided with a conformal coating sensor.
8. The U-tube mass flow meter of claim 5, wherein the sealed chamber comprises a heating chamber, the coating chamber is disposed in the heating chamber, the heating layer is disposed on the bottom layer in the heating chamber, and the motor is disposed outside the sealed chamber.
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