CN211453249U

CN211453249U - Constant-temperature ring sleeve for measuring flow resistance of non-Newtonian fluid

Info

Publication number: CN211453249U
Application number: CN202020057873.7U
Authority: CN
Inventors: 刘源; 范玲芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-09-08
Anticipated expiration: 2030-01-13

Abstract

The utility model discloses a constant temperature ring sleeve for measuring non-Newtonian fluid flow resistance, which comprises an inner pipe, an outer pipe, a three-way joint, a pressure sensor and a heat preservation layer; the inner pipe and the outer pipe are straight round pipes, the outer pipe is sleeved outside the inner pipe, the axes of the inner pipe and the outer pipe are overlapped, and the length of the outer pipe is smaller than that of the inner pipe; the utility model has the advantages that firstly, the utility model provides a pipeline device with small floor area, convenient assembly and low cost for the flow evaluation experiment; secondly, the inner pipe of the utility model can realize multi-section hot fusion, realize seamless splicing to a specific length, and reduce the throttling shearing influence of the traditional upper pipe connected by a connector; finally, the utility model discloses purpose-built outer tube circulation structure can provide a constant temperature environment for the fluid that flows in the middle of the longer pipeline, can realize the constant temperature survey under 60 ℃.

Description

Constant-temperature ring sleeve for measuring flow resistance of non-Newtonian fluid

Technical Field

The utility model relates to a measuring instrument technical field specifically is a constant temperature ring bushing for surveying non-Newton fluid flow resistance usefulness.

Background

Polymer solution, high-concentration surfactant solution, crude oil and the like belong to non-Newtonian fluids, and the fluids have certain rheological properties when flowing in a pipe, so that the determination of the fluids has important significance for mechanism research. When the flow of the fluid in the pipeline is measured, a flow experimental device is needed, and the most important part in the flow experimental device is a pipeline. The existing flow experiment device pipeline design mainly has three defects. First, the pipe structure is designed to measure the flow state of the fluid at normal temperature. The device for measuring the fluid flow state at a specific temperature usually needs a large-scale water bath and a heat insulation structure, and the water device has the disadvantages of complex structure, large occupied area and high equipment cost. Secondly, the device is limited by a constant temperature water bath and cannot simulate the flow pressure drop condition of a long pipeline. Third, traditional pipeline concatenation needs all kinds of adapters more, and the adapter can cause influences such as throttle, shearing to different extent, and this accuracy that can greatly influence the experiment.

SUMMERY OF THE UTILITY MODEL

1. Purpose of the utility model

The utility model aims at providing a constant temperature ring sleeve for measuring the flow resistance of non-Newtonian fluid, which firstly provides a pipeline device with small occupied area, convenient assembly and low cost for the flow evaluation experiment; secondly, the pipeline structure can realize multi-section hot welding, seamless splicing to a specific length is realized, and the throttling shearing influence caused by the connection of the traditional upper pipeline by using a connector is reduced; finally, the special sleeve-changing water circulation structure can provide a constant temperature environment for fluid flowing in a longer pipeline, and constant temperature measurement at 60 ℃ can be realized.

2. Technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a constant temperature ring sleeve for measuring the flow resistance of non-Newtonian fluid comprises an inner pipe, an outer pipe, a three-way joint, a pressure sensor and a heat-insulating layer; the inner pipe and the outer pipe are straight round pipes, the outer pipe is sleeved outside the inner pipe, the axes of the inner pipe and the outer pipe are overlapped, and the length of the outer pipe is smaller than that of the inner pipe; two joints are respectively arranged on two sides of the outer pipe, and the joints are communicated with a closed cavity formed by the outer pipe and the inner pipe; the three-way joint is a right-angle three-way joint and is arranged at one end of the inner pipe; the pressure sensor is arranged in the inner cavity of the vertical section of the three-way joint, and the heat insulation layer is coated on the outer side of the outer pipe.

The constant-temperature ring sleeve for measuring the flow resistance of the non-Newtonian fluid is characterized in that the inner diameter of the inner cavity of the vertical section of the three-way joint is smaller than the inner diameters of the remaining two openings.

The above-mentioned thermostatic ring sleeve for measuring flow resistance of non-newtonian fluid, wherein said inner tube is made of a heat-fusible material, including but not limited to one of PE, PP or PPR.

The constant temperature ring sleeve for measuring the flow resistance of the non-Newtonian fluid is characterized in that the outer pipe and the joint are made of PPR materials and are connected by a hot melting mode.

The constant-temperature ring sleeve for measuring the flow resistance of the non-Newtonian fluid is characterized in that the tee joint is arranged at one end of the inner pipe in a hot melting mode.

The constant-temperature ring sleeve for measuring the flow resistance of the non-Newtonian fluid is characterized in that the wall thickness of the two ends of the outer pipe is greater than that of the peripheral wall of the outer pipe.

3 advantageous effects

To sum up, the beneficial effects of the utility model are that:

(1) the utility model provides a pipeline device with small floor area, convenient assembly and low cost for the flow evaluation experiment;

(2) the inner pipe of the utility model can realize multi-section hot fusion, realize seamless splicing to a specific length, and reduce the throttling shearing influence of the traditional pipeline connected by a connector;

(3) the utility model discloses purpose-built outer tube circulation structure can provide a constant temperature environment for the fluid that flows in the middle of the longer pipeline, can realize the constant temperature survey under 60 ℃.

Drawings

FIG. 1 is a schematic view of a thermostatic ring sleeve for measuring flow resistance of non-Newtonian fluids according to the present invention;

fig. 2 is a cross-sectional view of a thermostatic ring sleeve for measuring flow resistance of a non-newtonian fluid in accordance with the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a constant temperature ring sleeve for measuring non-newtonian fluid flow resistance includes an inner pipe 1, an outer pipe 2, a three-way joint 3, a pressure sensor and an insulating layer 5; the inner pipe 1 and the outer pipe 2 are straight round pipes, the outer pipe 2 is sleeved outside the inner pipe 1, the axes of the inner pipe 1 and the outer pipe 2 are overlapped, and the length of the outer pipe 2 is smaller than that of the inner pipe 1; two joints 6 are respectively arranged on two sides of the outer pipe 2, and the joints 6 are communicated with a closed cavity 100 formed by the outer pipe 2 and the inner pipe 1; the three-way joint 3 is a right-angle three-way joint and is arranged at one end of the inner pipe 1; the pressure sensor is arranged in the inner cavity of the vertical section of the three-way joint 3, and the heat-insulating layer 5 is coated on the outer side of the outer pipe 2.

In addition, the inner cavity of the vertical section is used for installing the pressure sensor, so the inner diameter of the inner cavity of the vertical section of the three-way joint 3 is smaller than the inner diameters of the remaining two openings. The inner pipe 1 is made of a heat-fusible material, including but not limited to one of PE, PP or PPR, and the three-way joint 3 is installed at one end of the inner pipe 1 by means of heat fusion. The outer pipe 2 and the joint 6 are made of PPR materials and are connected in a hot melting mode. The wall thickness of the two ends of the outer pipe 2 is larger than that of the peripheral wall of the outer pipe 2, so that the thermal circulation fluid in the outer pipe 2 is prevented from being scattered through the two ends of the outer pipe 2, and the fluid testing effect is prevented from being influenced.

The using method comprises the following steps: the method comprises the steps of splicing 10 inner pipes 1 (the inner diameter is 12mm, the length is 1m) which are respectively numbered from A1 to A10 into a whole through three-way joints 3 in a thermal welding mode, respectively installing 10 pressure sensor sensors on each three-way joint 3, and connecting the pressure sensors to a PC through signal lines. After splicing, the corresponding joints 6 of the outer pipes 2 of all sections are connected in series end to end by using high-temperature-resistant silicon rubber pipes, and after the series connection is finished, circulating water with the temperature of 40 ℃ is led into the water inlet joint 6 of the outer pipe 2A 10 at the discharge capacity of 20L/min and is reflected out from the water outlet joint 6 of the outer pipe 2A 1. The inner tube 1 is connected with a constant flow pump through a nylon tube with the pressure-resistant grade of 1.6 MPa. When the temperature difference of circulating water at the inlet and the outlet is less than 1 ℃, the constant flow pump is adjusted to start pumping polyacrylamide solution with the mass fraction of 0.2% at the discharge capacity of 15L/min. At this time, the pressure sensors detect the pressures of different pipe sections and transmit the pressures to the computer. From the computer statistics, the pressure differential for each segment can be calculated. The design can well measure pressure drop parameters within ten meters, and the problem that long pipe sections with the length more than two meters are difficult to measure in other pipeline designs is solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A thermostatic annular sleeve for measuring flow resistance of a non-newtonian fluid, comprising: comprises an inner pipe (1), an outer pipe (2), a three-way joint (3), a pressure sensor and a heat-insulating layer (5); the inner pipe (1) and the outer pipe (2) are straight round pipes, the outer pipe (2) is sleeved on the outer side of the inner pipe (1), the axes of the inner pipe and the outer pipe are overlapped, and the length of the outer pipe (2) is smaller than that of the inner pipe (1); two joints (6) are respectively installed on two sides of the outer pipe (2), and the joints (6) are communicated with a closed cavity (100) formed by the outer pipe (2) and the inner pipe (1); the three-way joint (3) is a right-angle three-way joint and is arranged at one end of the inner pipe (1); the pressure sensor is arranged in an inner cavity of a vertical section of the three-way joint (3), and the heat-insulating layer (5) is coated on the outer side of the outer pipe (2).

2. A thermostatic annular sleeve for measuring flow resistance of a non-newtonian fluid according to claim 1, wherein: the inner diameter of the inner cavity of the vertical section of the three-way joint (3) is smaller than the inner diameters of the rest two openings.

3. A thermostatic annular sleeve for measuring flow resistance of a non-newtonian fluid according to claim 1, wherein: the inner tube (1) is made of a heat-fusible material, including but not limited to one of PE, PP or PPR.

4. A thermostatic annular sleeve for measuring flow resistance of a non-newtonian fluid according to claim 3, wherein: the outer pipe (2) and the joint (6) are made of PPR materials and are connected in a hot melting mode.

5. The thermostatic ring sleeve for measuring flow resistance of a non-newtonian fluid according to claim 4, wherein: the three-way joint (3) is arranged at one end of the inner pipe (1) in a hot melting mode.

6. A thermostatic annular sleeve for measuring flow resistance of a non-newtonian fluid according to claim 1, wherein: the wall thickness of the two ends of the outer pipe (2) is larger than that of the peripheral wall of the outer pipe (2).