CN216208367U

CN216208367U - Testing device for flow characteristics of gas-liquid two-phase flow

Info

Publication number: CN216208367U
Application number: CN202122699915.4U
Authority: CN
Inventors: 闫勃志; 姜玉阳; 朱鹏博; 武梦婷; 张学泽
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-05
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses a device for testing the flow characteristics of gas-liquid two-phase flow, which comprises a storage tank, a pressurization mechanism, an air pump, an air storage tank, a temperature control assembly and a test tube group, wherein the outlet end of the storage tank is communicated with the inlet end fluid of the pressurization mechanism through a pipeline, the air outlet end of the air pump is communicated with the air inlet end fluid of the air storage tank through a pipeline, and the air outlet end of the air storage tank and the outlet end of the pressurization mechanism are communicated with the inlet end fluid of the temperature control assembly through pipelines. Through setting up booster mechanism, under gear motor's driving action, drive first pressure boost subassembly and second pressure boost subassembly cooperation motion, improve transport efficiency, during the extrusion test liquid that the piston can be steady, avoid producing pulse phenomenon, and can be applicable to the experiment liquid of different viscosities, be connected through connector and spread groove between test pipe and the test pipe, can be when experimental, the crooked direction of free regulation pipeline, the true test pipeline of furthest's simulation.

Description

Testing device for flow characteristics of gas-liquid two-phase flow

Technical Field

The utility model relates to the technical field of mixed phase conveying tests. In particular to a device for testing the flow characteristics of gas-liquid two-phase flow.

Background

In order to improve the utilization rate of the pipeline and reduce the investment of pipeline construction, a mixed phase conveying technology is adopted when oil and gas are produced, namely, a plurality of resources are conveyed in one pipeline.

Chinese patent CN 208721532U discloses a testing device for flow characteristics of gas-liquid two-phase flow, which utilizes a centrifugal pump to pressurize test liquid, utilizes a compressor to pressurize test gas, and inputs the test gas into a test pipeline, and the test pipeline can adjust the direction through a steel wire hose, and finally performs a test by collecting data in the test pipeline.

In above-mentioned patent document, adopt the centrifugal pump for experimental liquid pressure boost, the pump is when moving, more or less can have certain impulse phenomenon, influences the fluid stationarity in the experimental pipeline to influence the test result, and same kind of pump, the experimental liquid that is applicable to various viscosities that can not be fine has certain not enough, and experimental back, and experimental liquid can adhere in the pipeline, and the clearance is comparatively troublesome.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to provide a device for testing the flow characteristics of gas-liquid two-phase flow, which is suitable for fluids with different viscosities, has no pulse phenomenon and is convenient to clean.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a testing arrangement of gas-liquid two-phase flow characteristic, includes bin, booster mechanism, air pump, gas holder, temperature control subassembly and experimental nest of tubes, the exit end of bin pass through the pipeline with booster mechanism's entrance point fluid switches on, the end of giving vent to anger of air pump pass through the pipeline with the inlet end fluid of gas holder switches on, the end of giving vent to anger of gas holder with booster mechanism's exit end all through the pipeline with temperature control subassembly's entrance point fluid switches on, temperature control subassembly's exit end with the entrance point fluid of experimental nest of tubes switches on, be provided with manometer and flowmeter on the experimental nest of tubes, experimental nest of tubes includes the experimental pipe that two sections or more than two sections end to end connect gradually, experimental pipe includes fixed connection's lower half shell and upper half shell.

According to the device for testing the flow characteristic of the gas-liquid two-phase flow, the two sides of the outer wall of the lower half shell and the two sides of the outer wall of the upper half shell are fixedly connected with the connecting plates, the connecting plates are provided with the fixing holes, the bolts penetrate through the fixing holes, the lower half shell and the upper half shell are mutually spliced to form a circular tube shape, the positions of the connecting plates on the two sides of the upper half shell correspond to those of the connecting plates on the two sides of the lower half shell, and the upper half shell and the lower half shell are fixedly connected through the bolts; the sealing groove has all been seted up on the opposite face of the upper half shell with lower half shell, be provided with sealed the pad in the sealing groove.

According to the device for testing the flow characteristic of the gas-liquid two-phase flow, the two ends of the test tube are respectively provided with the oblique cutting surfaces, the oblique cutting surface at the first end of the test tube is provided with the connecting groove, the oblique cutting surface at the second end of the test tube is fixedly connected with the connecting head, and the connecting head is matched with the connecting groove; two adjacent test tubes: the second end of one test tube is connected with the connecting groove at the first end of the second test tube through a connector; the first end of the test tube at the first end of the test tube group is a flat opening, and the first end of the test tube group is communicated with the second end of the temperature control assembly through fluid.

The temperature control assembly comprises a main pipeline and a coil pipe, the coil pipe is spirally wound on the pipe wall of the main pipeline, the first end of the main pipeline is communicated with the pipeline at the gas outlet end of the gas storage tank and the pipeline at the outlet end of the pressurization mechanism through fluid, and the second end of the main pipeline is communicated with the first end of the test pipe group through fluid.

Above-mentioned testing arrangement of gas-liquid two-phase flow characteristic, booster mechanism includes first pressure boost subassembly, second pressure boost subassembly and gear motor, first pressure boost subassembly with second pressure boost subassembly sets up and fixed connection side by side, gear motor fixed connection be in the middle of first pressure boost subassembly and second pressure boost subassembly's top, fixedly connected with drive gear on gear motor's the output shaft, drive gear's both sides respectively with first pressure boost subassembly's power input end with second pressure boost subassembly's power input end drive is connected.

The device for testing the flow characteristic of the gas-liquid two-phase flow is characterized in that the first pressurizing assembly and the second pressurizing assembly have the same structure, the first pressurizing assembly comprises an outer cylinder, a connecting rod and a piston, the piston is hermetically matched in the outer cylinder, the bottom end of the connecting rod is fixedly connected to the top of the piston, supporting plates are arranged at the top end of the outer cylinder and positioned at two sides of the connecting rod, the supporting plates are fixedly connected with the outer cylinder, limiting grooves are formed at two sides of the connecting rod, limiting blocks are fixedly connected to the side walls of the supporting plates and slidably connected in the limiting grooves, teeth are arranged on the side walls of the connecting rod along the length direction of the connecting rod, a suction pipe and an output pipe are respectively communicated with the bottom end of the outer cylinder through fluid, a first one-way valve is arranged on the suction pipe, and a second one-way valve is arranged on the output pipe, the other end of the suction pipe is in fluid communication with the storage tank, and the other end of the output pipe is in fluid communication with the first end of the temperature control assembly; the outer barrel of first pressure boost subassembly with the outer barrel fixed connection of second pressure boost subassembly, the tooth of first pressure boost subassembly connecting rod lateral wall with the tooth of second pressure boost subassembly connecting rod lateral wall sets up relatively, the tooth of first pressure boost subassembly connecting rod lateral wall with one side meshing of drive gear, the tooth of second pressure boost subassembly lateral wall with the opposite side meshing of drive gear.

The technical scheme of the utility model achieves the following beneficial technical effects:

1. through setting up booster mechanism, under gear motor's driving action, drive first pressure boost subassembly and second pressure boost subassembly cooperation motion, improve transport efficiency, during extrusion test liquid that the piston can be steady, avoid producing pulse phenomenon, and can be applicable to the experimental liquid of different viscosities.

2. The test tube group consisting of a plurality of test tubes is arranged, and the test tubes are connected with each other through the connectors and the connecting grooves, so that the bending direction of the pipeline can be freely adjusted during testing, and a real test pipeline can be simulated to the greatest extent; and the test tube is formed by splicing the upper half shell of the lower half shell, and after the test is finished, the test tube can be conveniently disassembled and cleaned, so that the pipeline can be cleaned to the maximum extent.

3. Through setting up the temperature control subassembly, can heat or cool down test liquid and test gas in the pipeline to reach the purpose of simulation different temperatures, thereby be convenient for experimental fluid flow condition under the different temperatures.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the pressurization mechanism of the present invention in a front cross-sectional configuration;

FIG. 3 is a schematic top view of the first plenum assembly of the present invention;

FIG. 4 is a schematic front view of a section of test tube according to the present invention;

FIG. 5 is a schematic cross-sectional view of a test tube according to the present invention;

FIG. 6 is a schematic view of the connection of two test tubes according to the present invention;

FIG. 7 is a schematic view of the steering connection of two test tubes of the present invention.

The reference numbers in the figures denote: 1-a storage tank; 2-a supercharging mechanism; 21-a first pressure increasing assembly; 22-a second pressure increasing assembly; 201-outer cylinder; 202-connecting rod 203-piston; 204-teeth; 205-a limiting groove; 206-a support plate; 207-driving gear; 208-a reduction motor; 209-suction tube; 210-a first one-way valve; 211-output pipe; 212-a second one-way valve; 3, an air pump; 4-a gas storage tank; 5-a temperature control component; 6-test tube group; 601-a lower half shell; 602-upper half shell; 603-connecting plates; 604-a bolt; 605-a connector; 606-connecting grooves; 607-a gasket; 7-a pressure gauge; 8-flow meter.

Detailed Description

Referring to fig. 1, the device for testing flow characteristics of a gas-liquid two-phase flow in this embodiment includes a storage tank 1, a pressurization mechanism 2, an air pump 3, an air storage tank 4, a temperature control assembly 5, and a test tube assembly 6, an outlet end of the storage tank 1 is in fluid communication with an inlet end of the pressurization mechanism 2 through a pipeline, an outlet end of the air pump 3 is in fluid communication with an inlet end of the air storage tank 4 through a pipeline, an outlet end of the air storage tank 4 and an outlet end of the pressurization mechanism 2 are both in fluid communication with an inlet end of the temperature control assembly 5 through a pipeline, an outlet end of the temperature control assembly 5 is in fluid communication with an inlet end of the test tube assembly 6, the test tube assembly 6 is provided with a pressure gauge 7 and a flow meter 8, and by providing the pressurization mechanism 2, under the driving action of a deceleration motor 208, the first pressurization assembly 21 and the second pressurization assembly 22 are driven to move cooperatively, improve transport efficiency, during the extrusion test liquid that piston 203 can be steady, avoid producing pulse phenomenon, and can be applicable to the experiment liquid of different viscosity, temperature control subassembly 5 includes trunk line and coil pipe, the coil pipe spiral winding is in on the pipe wall of trunk line, the first end of trunk line with the pipeline of the end of giving vent to anger of gas holder 4 with the pipeline fluid of 2 exit ends of booster mechanism switches on, the second end of trunk line with the first end fluid of experimental group of tubes 6 switches on, through setting up temperature control subassembly 5, can heat or cool down experimental liquid in the pipeline and experimental gas to reach the purpose of simulating different temperatures, thereby be convenient for experimental fluid flow condition under the different temperatures.

As shown in fig. 2 and 3, the supercharging mechanism 2 includes a first supercharging assembly 21, a second supercharging assembly 22 and a speed reduction motor 208, the first supercharging assembly 21 and the second supercharging assembly 22 are arranged side by side and fixedly connected, the speed reduction motor 208 is fixedly connected to the top middle of the first supercharging assembly 21 and the second supercharging assembly 22, a driving gear 207 is fixedly connected to an output shaft of the speed reduction motor 208, and two sides of the driving gear 207 are respectively in driving connection with a power input end of the first supercharging assembly 21 and a power input end of the second supercharging assembly 22; the structure of the first pressurizing assembly 21 is the same as that of the second pressurizing assembly 22, the first pressurizing assembly 21 comprises an outer cylinder 201, a connecting rod 202 and a piston 203, the piston 203 is in sealing fit in the outer cylinder 201, the bottom end of the connecting rod 202 is fixedly connected to the top of the piston 203, the top end of the outer cylinder 201 is positioned at two sides of the connecting rod 202 and is provided with a supporting plate 206, the supporting plate 206 is fixedly connected with the outer cylinder 201, two sides of the connecting rod 202 are provided with limiting grooves 205, the side wall of the supporting plate 206 is fixedly connected with limiting blocks, the limiting blocks are connected in the limiting grooves 205 in a sliding manner, the side wall of the connecting rod 202 is provided with teeth 204 along the length direction thereof, the bottom end of the outer cylinder 201 is respectively communicated with a suction pipe 209 and an output pipe 211 through fluid, the suction pipe 209 is provided with a first one-way valve 210, the output pipe 211 is provided with a second one-way valve 212, the other end of the suction pipe 209 is in fluid communication with the storage tank 1, and the other end of the output pipe 211 is in fluid communication with a first end of the main pipe of the temperature control assembly 5; the outer cylinder 201 of the first supercharging component 21 is fixedly connected with the outer cylinder 201 of the second supercharging component 22, the teeth 204 on the side wall of the first supercharging component 21 connecting rod 202 are oppositely arranged with the teeth 204 on the side wall of the second supercharging component 22 connecting rod 202, the teeth 204 on the side wall of the first supercharging component 21 connecting rod 202 are meshed with one side of the driving gear 207, and the teeth 204 on the side wall of the second supercharging component 22 are meshed with the other side of the driving gear 207.

As shown in fig. 1 and 4, the test tube group 6 includes two or more test tubes connected end to end, and the test tubes include a lower half-shell 601 and an upper half-shell 602 which are fixedly connected.

As shown in fig. 5, connecting plates 603 are fixedly connected to both sides of the outer walls of the lower half-shell 601 and the upper half-shell 602, fixing holes are formed in the connecting plates 603, bolts 604 penetrate through the fixing holes, the lower half-shell 601 and the upper half-shell 602 are mutually spliced to form a circular tube shape, the positions of the connecting plates 603 on both sides of the upper half-shell 602 and the positions of the connecting plates 603 on both sides of the lower half-shell 601 correspond to each other, and the upper half-shell 602 and the lower half-shell 601 are fixedly connected by bolts; the upper half shell 602 with the seal groove has all been seted up on the opposite face of lower half shell 601, be provided with sealed pad 607 in the seal groove, the test tube is formed by the concatenation of lower half shell 601 upper half shell 602, after experimental, can carry out convenient disassembling to clear up, thereby realize the clearance pipeline of at utmost, in actual test, can scribble sealed glue in order to reach the best sealed effect on the contact surface of upper half shell 602 and lower half shell 601.

As shown in fig. 4, 6, and 7, both ends of the test tube are provided with chamfered surfaces, the chamfered surface of the first end of the test tube is provided with a connecting groove 606, the chamfered surface of the second end of the test tube is fixedly connected with a connecting head 605, the connecting head 605 is in two halves, one half of the connecting head 605 is fixed on the chamfered surface of the upper half-shell 602, the other half of the connecting head 605 is fixed on the chamfered surface of the lower half-shell 601, the connecting head 605 and the connecting groove 606 are matched with each other, the shape of the connecting head 605 is the same as that of the connecting groove 606, and when the upper half-shell 602 and the lower half-shell 601 are loosened, the connecting head 605 can rotate in the connecting groove 606; two adjacent test tubes: the second end of one test tube is connected with the connecting groove 606 of the first end of the second test tube through the connecting head 605, the test tube group 6 consisting of a plurality of test tubes is arranged, and the test tubes are connected with each other through the connecting head 605 and the connecting groove 606, so that the bending direction of the pipeline can be freely adjusted during testing, and a real test pipeline can be simulated to the greatest extent; the first end of the test tube of the first end of the test tube group 6 is a plain end, namely the test tube head at the first section of the test tube group 6 is arranged into a conventional interface, so that the test tube head is conveniently connected with a main pipeline, and the first end of the test tube group 6 is communicated with the second end fluid of the main pipeline of the temperature control component 5.

The working principle is as follows: when a test is carried out, test liquid is added into the storage tank 1, and the required test gas is compressed into the gas storage tank 4 through the gas pump 3, so that the test gas in the gas storage tank 4 reaches the required pressure; starting the speed reducing motor 208, wherein the speed reducing motor 208 drives the driving gear 207 to rotate, and the driving gear 207 simultaneously drives the first pressurizing assembly 21 and the second pressurizing assembly 22 to move in opposite directions; the first pressurizing assembly 21 moves downwards, the driving gear 207 drives the connecting rod 202 of the first pressurizing assembly 21 to push the piston 203 downwards, the first one-way valve 210 at the bottom of the piston is closed, the second one-way valve 212 is opened, air in the piston is exhausted through the output pipe 211, a three-way valve can also be arranged above the second one-way valve 212, when the piston is started to operate, the three-way valve is opened, so that the air in the first pressurizing assembly 21 is exhausted, the second pressurizing assembly 22 moves upwards while the first pressurizing assembly 21 moves downwards, the driving gear 207 drives the connecting rod 202 of the second pressurizing assembly 22 to pull the piston 203 upwards, at the moment, the first one-way valve 210 at the bottom of the second pressurizing assembly 22 is opened, the second one-way valve 212 is closed, and experimental liquid in the storage tank 1 is pumped into the second pressurizing assembly 22 through the suction pipe 209 until the second pressurizing assembly 22 is fully pumped; then, the speed reducing motor 208 is started reversely to drive the first pressurizing assembly 21 to suck the test liquid, and simultaneously drive the second pressurizing assembly 22 to press down, so that the test liquid is pressed into the temperature control assembly 5, and the test liquid is pressed in by reciprocating operation;

meanwhile, a valve on an air outlet pipeline of the air storage tank 4 is opened, air is supplied into the temperature control component 5, the gas and the liquid enter the test pipe group 6 after passing through the temperature control component 5, and corresponding temperature, flow rate and pressure sensors and the like are arranged on a liquid outlet pipeline of the pressurization mechanism 2, an air outlet pipeline of the air storage tank 4, a main pipeline and the test pipe group 6 as required so as to facilitate test data acquisition;

when the direction of the test tube group 6 needs to be adjusted, as shown in fig. 6 and 7, the bolts 604 at two sides of two adjacent sections of test tubes are loosened, one section of test tube is rotated to a required angle, then the bolts 604 at two sides of two adjacent sections of test tubes are screwed down, so that the lower half shell 601 is close to the upper half shell 602 and compresses the sealing gasket 607, and the connecting groove 606 continuously compresses the connecting head 605 to realize sealing and fixing; when the temperature needs to be adjusted, cold water or hot water with corresponding temperature is introduced into the coil pipe;

after the test is finished and cleaning is needed, only the bolts 604 on the two sides of the test tube need to be removed, the lower half shell 601 and the upper half shell 602 are separated, and the two half shells are cleaned respectively.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.

Claims

1. The device for testing the flow characteristic of the gas-liquid two-phase flow is characterized by comprising a storage box (1), a pressurization mechanism (2), an air pump (3), an air storage tank (4), a temperature control assembly (5) and a test pipe assembly (6), wherein the outlet end of the storage box (1) is communicated with the inlet end fluid of the pressurization mechanism (2) through a pipeline, the air outlet end of the air pump (3) is communicated with the air inlet end fluid of the air storage tank (4) through a pipeline, the air outlet end of the air storage tank (4) and the outlet end of the pressurization mechanism (2) are communicated with the inlet end fluid of the temperature control assembly (5) through pipelines, the outlet end of the temperature control assembly (5) is communicated with the inlet end fluid of the test pipe assembly (6), a pressure gauge (7) and a flow meter (8) are arranged on the test pipe assembly (6), and the test pipe assembly (6) comprises two or more test pipes which are sequentially connected end to end, the test tube comprises a lower half-shell (601) and an upper half-shell (602) which are fixedly connected.

2. The device for testing the flow characteristics of a gas-liquid two-phase flow according to claim 1, wherein connecting plates (603) are fixedly connected to both sides of the outer walls of the lower half shell (601) and the upper half shell (602), fixing holes are formed in the connecting plates (603), bolts (604) penetrate through the fixing holes, the lower half shell (601) and the upper half shell (602) are spliced with each other to form a circular tube shape, the connecting plates (603) on both sides of the upper half shell (602) correspond to the connecting plates (603) on both sides of the lower half shell (601) in position, and the upper half shell (602) and the lower half shell (601) are fixedly connected through the bolts; the sealing groove has all been seted up on the opposite face of upper half shell (602) with lower half shell (601), be provided with sealed pad (607) in the sealing groove.

3. The device for testing the flow characteristics of a gas-liquid two-phase flow according to claim 2, wherein both ends of the test tube are provided with chamfered surfaces, the chamfered surface at the first end of the test tube is provided with a connecting groove (606), the chamfered surface at the second end of the test tube is fixedly connected with a connecting head (605), and the connecting head (605) and the connecting groove (606) are matched with each other; two adjacent test tubes: the second end of one of said test tubes is connected to a connecting groove (606) in the first end of a second of said test tubes by a connector (605); the first end of the test tube at the first end of the test tube group (6) is a plain end, and the first end of the test tube group (6) is communicated with the second end of the temperature control assembly (5) through fluid.

4. The device for testing the flow characteristics of a gas-liquid two-phase flow according to claim 1, wherein the temperature control assembly (5) comprises a main pipe and a coil pipe, the coil pipe is spirally wound on the wall of the main pipe, a first end of the main pipe is in fluid communication with a pipeline at the gas outlet end of the gas storage tank (4) and a pipeline at the outlet end of the pressurization mechanism (2), and a second end of the main pipe is in fluid communication with a first end of the test pipe group (6).

5. The device for testing the flow characteristics of a gas-liquid two-phase flow according to claim 1, wherein the pressurization mechanism (2) comprises a first pressurization assembly (21), a second pressurization assembly (22) and a speed reduction motor (208), the first pressurization assembly (21) and the second pressurization assembly (22) are arranged side by side and fixedly connected, the speed reduction motor (208) is fixedly connected to the middle of the tops of the first pressurization assembly (21) and the second pressurization assembly (22), a driving gear (207) is fixedly connected to an output shaft of the speed reduction motor (208), and two sides of the driving gear (207) are respectively in driving connection with a power input end of the first pressurization assembly (21) and a power input end of the second pressurization assembly (22).

6. The device for testing the flow characteristic of a gas-liquid two-phase flow according to claim 5, wherein the first pressurizing assembly (21) and the second pressurizing assembly (22) have the same structure, the first pressurizing assembly (21) comprises an outer cylinder (201), a connecting rod (202) and a piston (203), the piston (203) is hermetically fitted in the outer cylinder (201), the bottom end of the connecting rod (202) is fixedly connected to the top of the piston (203), the top end of the outer cylinder (201) is located at two sides of the connecting rod (202) and is provided with supporting plates (206), the supporting plates (206) are fixedly connected with the outer cylinder (201), two sides of the connecting rod (202) are provided with limiting grooves (205), the side walls of the supporting plates (206) are fixedly connected with limiting blocks, and the limiting blocks are slidably connected in the limiting grooves (205), the side wall of the connecting rod (202) is provided with teeth (204) along the length direction, the bottom end of the outer cylinder body (201) is respectively communicated with a suction pipe (209) and an output pipe (211) through fluid, the suction pipe (209) is provided with a first one-way valve (210), the output pipe (211) is provided with a second one-way valve (212), the other end of the suction pipe (209) is communicated with the fluid of the storage tank (1), and the other end of the output pipe (211) is communicated with the fluid of the first end of the temperature control assembly (5); outer barrel (201) of first pressure boost subassembly (21) with outer barrel (201) fixed connection of second pressure boost subassembly (22), tooth (204) of first pressure boost subassembly (21) connecting rod (202) lateral wall with tooth (204) of second pressure boost subassembly (22) connecting rod (202) lateral wall set up relatively, tooth (204) of first pressure boost subassembly (21) connecting rod (202) lateral wall with one side meshing of drive gear (207), tooth (204) of second pressure boost subassembly (22) lateral wall with the opposite side meshing of drive gear (207).