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CN-122015982-A - Target flowmeter for large-viscosity oil flow

CN122015982ACN 122015982 ACN122015982 ACN 122015982ACN-122015982-A

Abstract

The invention relates to the technical field of flow measuring instruments and discloses a target flowmeter for large-viscosity oil flow, which comprises a fixed support, wherein a flange pipe assembly is arranged at the bottom of the fixed support, a bottom shell is arranged at the top of the fixed support, a fixed sleeve and a sealing gasket are arranged in the fixed support, an elastic reset piece is arranged at the lower end of the fixed sleeve, an elastic reset piece seat is arranged at the bottom of the elastic reset piece, a transmission shaft is arranged in the fixed sleeve, a target piece is arranged at the bottom of the transmission shaft, a sensor mounting seat is arranged in the bottom shell, and a cover shell is arranged at the top of the bottom shell. According to the target flowmeter for the large-viscosity oil flow, the adhesive force of the large-viscosity oil is reduced from the root through the streamline target piece and the passivation treatment of the edge fillet of the target piece, the problem of oil sludge wall built-up is solved, the effective stress area of the target piece is kept stable in the long-term operation process, and the problem of measurement signal drift caused by oil sticking and scale deposition of a conventional flowmeter is solved.

Inventors

  • XIONG ZHANGHUA
  • MA DAPENG
  • ZHANG YAN

Assignees

  • 宜昌兆峰自动化仪表有限责任公司

Dates

Publication Date
20260512
Application Date
20260324

Claims (6)

  1. 1. The target flowmeter for the large-viscosity oil flow is characterized by comprising a fixed support (100), wherein a flange pipe assembly (114) is arranged at the bottom of the fixed support (100), a bottom shell (101) is arranged at the top of the fixed support (100), a fixed sleeve (108) and a sealing gasket (109) are arranged inside the fixed support (100), an elastic reset piece (110) is arranged at the lower end of the fixed sleeve (108), an elastic reset piece seat (111) is arranged at the bottom of the elastic reset piece (110), a transmission shaft (112) is arranged inside the fixed sleeve (108), a target piece (113) is arranged at the bottom of the transmission shaft (112), a sensor mounting seat (102) is arranged inside the bottom shell (101), a cover shell (105) is arranged at the top of the bottom shell (101), a tension and pressure sensor (103) is fixedly connected to the sensor mounting seat (102), and a thimble (104) is arranged on one side of the tension and pressure sensor (103).
  2. 2. The target flowmeter for large-viscosity oil flow according to claim 1, wherein the top of the fixing sleeve (108) is in threaded connection with a tightening screw (106), an end cap (107) is arranged at the top of the transmission shaft (112), the top of the end cap (107) is convex, and a groove matched with the top of the end cap (107) is formed in one side, close to the end cap (107), of the tightening screw (106).
  3. 3. A target flowmeter for high-viscosity oil flow according to claim 1, wherein a temperature sensor (115) is provided inside the drive shaft (112).
  4. 4. The target flowmeter for large-viscosity oil flow according to claim 1, wherein the fixed sleeve (108) is internally provided with a through groove, the size of the through groove is matched with that of the thimble (104), and the end part of the thimble (104) is movably connected with the transmission shaft (112).
  5. 5. The target flowmeter for high-viscosity oil flow according to claim 1, wherein said elastic restoring member (110) is disposed on an outer surface of a transmission shaft (112), and a seal cavity is formed inside said fixed support (100).
  6. 6. The target flowmeter for high-viscosity oil flow according to claim 1, wherein the target piece (113) is of a symmetrical streamline structure, and the surface radian of the target piece (113) is adapted to the flow direction of the high-viscosity oil.

Description

Target flowmeter for large-viscosity oil flow Technical Field The invention relates to the technical field of flow measuring instruments, in particular to a target flowmeter for large-viscosity oil flow. Background The target flowmeter is a measuring device which generates thrust to a target by depending on fluid power and converts fluid flow by detecting the magnitude of the thrust, and is often used for measuring the flow of a medium with higher viscosity due to the characteristics of simple structure, impurity resistance and adaptation to low Reynolds number fluid. However, when the conventional target flowmeter is applied to the detection of large-viscosity oil flow, various adaptability defects exist, and the requirements of accurate and stable metering are difficult to meet. Although the traditional target flowmeter has certain suitability for high-viscosity media, the dynamic sealing structure is generally insufficient in reliability, medium leakage is easy to occur in long-term use, the gap of a force transmission path is large, the loss is high, the sensitivity is low, a temperature compensation mechanism is absent, the viscosity of high-viscosity oil is large along with the change of temperature, the flow measurement error is directly caused to exceed the standard, and the use requirement of long-term stable metering in an industrial field cannot be met. Based on the method, a target flowmeter special for high-viscosity oil with reliable sealing, stable precision and temperature compensation is developed, and the target flowmeter has important practical application value. At present, the target flowmeter special for large-viscosity oil is relatively deficient in improvement technology, the conventional product is optimized by conventional structures, and the problems of unstable precision, high failure rate and frequent maintenance in measurement of the large-viscosity oil cannot be thoroughly solved because the conventional product is not subjected to targeted improvement from the core angles of anti-sticking, anti-fouling, signal compensation, flow field adaptation and the like, so that the target flowmeter for large-viscosity oil flow is provided to solve the problems. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a target flowmeter for large-viscosity oil flow, which has the advantages of solving the problems of large-viscosity oil adhesion and siltation, signal drift, low precision and operation blocking in the measuring and using process of the target flowmeter. In order to achieve the purpose, the target flowmeter for large-viscosity oil flow comprises a fixed support, wherein a flange pipe assembly is arranged at the bottom of the fixed support, a bottom shell is arranged at the top of the fixed support, a fixed sleeve and a sealing gasket are arranged in the fixed support, an elastic reset piece is arranged at the lower end of the fixed sleeve, an elastic reset piece seat is arranged at the bottom of the elastic reset piece, a transmission shaft is arranged in the fixed sleeve, a target piece is arranged at the bottom of the transmission shaft, a sensor mounting seat is arranged in the bottom shell, a cover shell is arranged at the top of the bottom shell, a tension-compression sensor is fixedly connected to the sensor mounting seat, and a thimble is arranged on one side of the tension-compression sensor. Further, the top threaded connection of fixed sleeve has a tight screw in top, the transmission shaft top is provided with the end cap, the end cap top is protruding, the tight screw in top be close to one side of end cap be provided with the recess of end cap top looks adaptation. Further, a temperature sensor is arranged inside the transmission shaft. Further, the fixed sleeve is internally provided with a through groove, the size of the through groove is matched with the size of the thimble, and the end part of the thimble is movably connected with the transmission shaft. Further, the elastic resetting piece is arranged on the outer surface of the transmission shaft, a sealing cavity is formed in the fixing support, and the elastic resetting piece can be a corrugated pipe. Furthermore, the target is of a symmetrical streamline structure, the radian of the surface of the target is adaptive to the flowing direction of the high-viscosity oil, so that the adhesion accumulation of the oil is effectively reduced, the flowing resistance of the fluid is reduced, and the measurement error caused by the formation of local vortex of the high-viscosity oil is avoided. Compared with the prior art, the invention provides a target flowmeter for large-viscosity oil flow, which has the following beneficial effects: 1. According to the target flowmeter for the large-viscosity oil flow, the adhesive force of the large-viscosity oil is reduced from the root through the streamline target piece and the passivation treatment of the edge fillet of the target piece, th