CN219656937U - Device for measuring gas-liquid two-phase flow by nozzle flowmeter - Google Patents
Device for measuring gas-liquid two-phase flow by nozzle flowmeter Download PDFInfo
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- CN219656937U CN219656937U CN202320390088.7U CN202320390088U CN219656937U CN 219656937 U CN219656937 U CN 219656937U CN 202320390088 U CN202320390088 U CN 202320390088U CN 219656937 U CN219656937 U CN 219656937U
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- gas
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- 239000007788 liquid Substances 0.000 title claims abstract description 33
- 230000005514 two-phase flow Effects 0.000 title claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 4
- 210000002445 nipple Anatomy 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The utility model provides a device for measuring gas-liquid two-phase flow by a nozzle flowmeter, which comprises: the device comprises a nozzle flowmeter, a densimeter and a measured pipeline, wherein the nozzle flowmeter and the densimeter are respectively arranged on the circumferential outer wall of the measured pipeline at intervals, the densimeter is arranged on one side of the nozzle flowmeter, which is close to the outlet of the measured pipeline, and the nozzle flowmeter is connected with the densimeter through an isopiestic pipe; and the installation and measurement efficiency is effectively improved.
Description
Technical Field
The utility model relates to the technical field of gas-liquid two-phase flow measurement, in particular to a device for measuring gas-liquid two-phase flow by using a nozzle flowmeter.
Background
At present, the existing nozzle flowmeter is often connected with a measured pipeline through a flange, is inconvenient to install and difficult to maintain, and is time-consuming and labor-consuming in measuring gas-liquid two-phase flow.
Disclosure of Invention
The utility model provides a device for measuring gas-liquid two-phase flow by using a nozzle flowmeter, which is used for solving the problem that the conventional measuring equipment is inconvenient to measure.
An apparatus for measuring a gas-liquid two-phase flow with a nozzle flow meter, comprising: the device comprises a nozzle flowmeter, a densimeter and a measured pipeline, wherein the nozzle flowmeter and the densimeter are respectively arranged on the circumferential outer wall of the measured pipeline at intervals, the densimeter is arranged on one side of the nozzle flowmeter, which is close to the outlet of the measured pipeline, and the nozzle flowmeter is connected with the densimeter through an isopiestic pipe.
Preferably, the nozzle flowmeter comprises a nozzle body and a measuring pipe fitting, wherein the nozzle body is arranged in the measuring pipe fitting, a first measuring pipe and a second measuring pipe are arranged on the peripheral outer wall of the measuring pipe fitting at intervals, the first measuring pipe and the second measuring pipe are positioned at two ends of the nozzle body, the first measuring pipe and the second measuring pipe are arranged at two sides of the measuring pipe fitting, and the first measuring pipe and the second measuring pipe are respectively used for connecting a high-pressure taking pipe and a low-pressure taking pipe.
Preferably, the two ends of the measuring pipe fitting are respectively used for connecting a measured pipeline, the nozzle body comprises a tubular nozzle and a throttling channel, one end of the tubular nozzle is a connecting end, the connecting end is used for connecting the inner wall of the measuring pipe fitting, which is close to the first measuring pipe, one end of the tubular nozzle, which is far away from the connecting end, faces the second measuring pipe, the throttling channel is arranged in the tubular nozzle, and the throttling channel is used for communicating the measured pipelines at the two ends of the measuring pipe fitting.
Preferably, the inner walls of the two ends of the measuring pipe fitting are provided with internal threads, and the internal threads are used for being connected with pipe installation pieces with different inner diameters in a threaded mode.
Preferably, the pipe fitting piece includes screwed ring, hex nut, quick connecting pipe, screwed ring's one end is used for threaded connection the internal thread, and the other end is connected quick connecting pipe, quick connecting pipe is close to screwed ring's one end circumference outer wall is provided with hex nut.
Preferably, one end of the quick connecting pipe, which is far away from the threaded ring, is provided with an annular bulge, the annular bulge is arranged on the peripheral outer wall of the quick connecting pipe, and a plurality of rubber sealing rings are arranged between the annular bulge and the hexagonal nut.
Preferably, the high-pressure-taking pipe and the pressure-resisting pressure-taking pipe are respectively used for being connected with a flow meter, the flow meter comprises a differential pressure transmitter and a valve group, and the high-pressure-taking pipe and the low-pressure-taking pipe are respectively connected with the differential pressure transmitter through the valve group.
Preferably, the nozzle flowmeter is provided with the protective housing outward, the protective housing comprises two symmetrical shells, the one end of two shells is articulated through the articulated rod, and the other end is provided with and holds the chamber, it is provided with the piece of can dismantling to hold the chamber top, can dismantle the piece and be used for two the connection can be dismantled to the shell, hold the intracavity and be used for setting up the nozzle flowmeter.
Preferably, one end of the shell, which is close to the hinging rod, is provided with an arc plate, the openings of the arc plates of the two shells are arranged oppositely, and the two arc plates are used for being clamped on the circumferential outer wall of the tested pipeline;
sealing rubber pads are arranged on two sides of the adjacent surfaces of the two shells.
Preferably, an observation hole is formed in one end, close to the accommodating cavity, of the shell, and a glass plate is arranged in the observation hole.
The working principle and the beneficial effects of the utility model are as follows:
the complexity of the measuring structure is effectively reduced, the measuring cost is reduced, the nozzle flowmeter is simple to install, and the efficiency of measuring the gas-liquid two-phase flow is effectively improved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of a device for measuring a gas-liquid two-phase flow by a nozzle flow meter according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a measuring tube structure according to an embodiment of the present utility model;
FIG. 3 is a schematic view of an internal thread structure according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a pipe fitting according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of a fast connecting pipe according to an embodiment of the present utility model;
FIG. 6 is a side view of a protective case according to an embodiment of the present utility model;
fig. 7 is a front view of a protective case according to an embodiment of the present utility model;
FIG. 8 is a schematic view of a sealing rubber gasket according to an embodiment of the utility model.
The device comprises a 1-isopipe, a 2-densimeter, a 3-differential pressure transmitter, a 4-high pressure taking pipe, a 5-nozzle flowmeter, a 6-low pressure taking pipe, a 7-measured pipeline, an 8-measuring pipe fitting, a 9-first measuring pipe, a 10-second measuring pipe, a 11-tubular nozzle, a 12-throttling channel, a 13-connecting end, a 14-internal thread, a 15-threaded ring, a 16-hexagonal nut, a 17-quick connecting pipe, a 18-annular bulge, a 19-rubber sealing ring, a 20-shell, a 21-hinging rod, a 22-accommodating cavity, a 23-detachable piece, a 24-arc plate, a 25-glass plate, a 26-observation hole and a 27-sealing rubber pad.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
As shown in fig. 1 to 8, an embodiment of the present utility model provides an apparatus for measuring a gas-liquid two-phase flow using a nozzle flow meter, comprising: the device comprises a nozzle flowmeter 5, a densimeter 2 and a measured pipeline 7, wherein the nozzle flowmeter 5 and the densimeter 2 are respectively arranged on the circumferential outer wall of the measured pipeline 7 at intervals, the densimeter 2 is arranged on one side, close to the outlet of the measured pipeline 7, of the nozzle flowmeter 5, and the nozzle flowmeter 5 and the densimeter 2 are connected through an isopipe 1.
The working principle and the beneficial effects of the embodiment are as follows:
the gas-liquid two-phase flow sequentially passes through the nozzle flowmeter 5 and the densimeter 2, in the process, the static pressure drop when the two-phase flow flows through the nozzle is discharged from the side of the nozzle flowmeter 5, the actual density of the gas-liquid two-phase flow is measured by the densimeter 2, and the specific calculation is as follows:
according to the nozzle flowmeter 5, the gas phase density P, the temperature t of the gas-liquid two-phase flow and the static pressure drop delta P when the gas-liquid two-phase flow flows through the nozzle are measured TP The densitometer 2 measures the actual density ρ of the gas-liquid two-phase flow m ，
First, the gas phase density ρ is calculated by the formula (1) G ：
Wherein Mmol is the number of moles of the gas phase
X is calculated by equation (2):
the correction coefficient θ is calculated by the formula (3):
calculating the static pressure drop delta P of the gas-liquid two-phase flow flowing through the nozzle when the gas-liquid two-phase flow is all liquid according to the formula (4) o ：
Calculating the mass flow W of the gas-liquid two-phase flow flowing through the nozzle according to the formula (5) TP ：
Calculating the liquid phase mass flow W through the formula (6) and the formula (7) L And gas phase mass flow W G ：
W G ＝X·W TP (6)
W L ＝(1-X)·W TP (7)
The liquid phase mass flow and the gas phase mass flow can be calculated through the formula, the complexity of a measuring structure is effectively reduced, the measuring cost is reduced, the nozzle flowmeter 5 is simple to install, and the efficiency of measuring the gas-liquid two-phase flow is effectively improved.
In one embodiment, the nozzle flowmeter 5 includes a nozzle body and a measuring tube 8, the nozzle body is disposed in the measuring tube 8, a first measuring tube 9 and a second measuring tube 10 are disposed on the circumferential outer wall of the measuring tube 8 at intervals, the first measuring tube 9 and the second measuring tube 10 are disposed at two ends of the nozzle body, the first measuring tube 9 and the second measuring tube 10 are disposed at two sides of the measuring tube 8, and the first measuring tube 9 and the second measuring tube 10 are respectively used for connecting the high-pressure taking tube 4 and the low-pressure taking tube 6.
The two ends of the measuring pipe fitting 8 are respectively used for connecting the measured pipeline 7, the nozzle body comprises a tubular nozzle 11 and a throttling channel 12, one end of the tubular nozzle 11 is a connecting end 13, the connecting end 13 is used for connecting the inner wall of the measuring pipe fitting 8, which is close to the first measuring pipe 9, the end, which is far away from the connecting end 13, of the tubular nozzle 11 is arranged towards the second measuring pipe 10, the throttling channel 12 is arranged in the tubular nozzle 11, and the throttling channel 12 is used for communicating the measured pipeline 7 at the two ends of the measuring pipe fitting 8.
The inner walls of the two ends of the measuring pipe fitting 8 are respectively provided with an internal thread 14, and the internal threads 14 are used for being connected with pipe installation pieces with different inner diameters in a threaded mode.
The pipeline installation piece comprises a threaded ring 15, a hexagonal nut 16 and a quick connection pipe 17, one end of the threaded ring 15 is used for being in threaded connection with the internal thread 14, the other end of the threaded ring is connected with the quick connection pipe 17, and the hexagonal nut 16 is arranged on the circumferential outer wall of one end, close to the threaded ring 15, of the quick connection pipe 17.
The one end that the nipple 17 kept away from the screwed ring 15 is provided with annular protruding 18, annular protruding 18 sets up the circumference outer wall of nipple 17, annular protruding 18 with be provided with a plurality of rubber sealing rings 19 between the hex nut 16.
The high-pressure taking pipe 4 and the pressure resisting pressure taking pipe are respectively used for being connected with a flow meter, the flow meter comprises a differential pressure transmitter 3 and a valve group, and the high-pressure taking pipe 4 and the low-pressure taking pipe 6 are respectively connected with the differential pressure transmitter 3 through the valve group.
The working principle and beneficial effects of the embodiment are as follows:
when the nozzle flowmeter 5 is installed, the outer diameter of the detected pipeline 7 is measured, quick connecting pipes 17 with different calibers are selected, then a threaded ring 15 at one end of each quick connecting pipe 17 is screwed into an internal thread 14, then the quick connecting pipe 17 is plugged into the detected pipeline 7, the pipeline is sealed through a rubber sealing ring 19, gas and liquid are prevented from being exposed, the other end of the measuring pipe fitting 8 is operated in the same way, the gas and liquid flow from one end of the detected pipeline 7, enter the detected pipeline 7 at the other end through a throttling channel 12, and therefore pressure difference is formed at two ends of a tubular nozzle 11, the pressure difference is measured through a high-pressure taking pipe 4 and a low-pressure taking pipe 6, and measured data are displayed through a differential pressure transmitter 3.
In one embodiment, a protective shell is arranged outside the nozzle flowmeter 5, the protective shell is composed of two symmetrical shells 20, one ends of the two shells 20 are hinged through a hinge rod 21, the other ends of the two shells are provided with a containing cavity 22, the top of the containing cavity 22 is provided with a detachable piece 23, the detachable piece 23 is used for detachably connecting the two shells 20, and the containing cavity 22 is internally used for arranging the nozzle flowmeter 5.
An arc plate 24 is arranged at one end of the shell 20, which is close to the hinging rod 21, openings of the arc plates 24 of the two shells 20 are oppositely arranged, and the two arc plates 24 are used for being clamped on the circumferential outer wall of the tested pipeline 7;
sealing rubber pads 27 are arranged on two sides of the adjacent surfaces of the two shells 20.
An observation hole 26 is formed in one end, close to the accommodating cavity 22, of the shell 20, and a glass plate 25 is arranged in the observation hole 26.
The working principle and the beneficial effects of the embodiment are as follows:
after the nozzle flowmeter 5 is installed, the two shells 20 are buckled on two sides of the detected pipeline 7, the containing cavity 22 wraps the nozzle flowmeter 5, the detachable piece 23 is composed of a bolt and a nut, the top ends of the two shells 20 are installed in a threaded mode through the bolt and the nut, and the detected pipeline 7 and the nozzle flowmeter 5 are protected.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. An apparatus for measuring a gas-liquid two-phase flow using a nozzle flow meter, comprising: the device comprises a nozzle flowmeter, a densimeter and a measured pipeline, wherein the nozzle flowmeter and the densimeter are respectively arranged on the circumferential outer wall of the measured pipeline at intervals, the densimeter is arranged on one side of the nozzle flowmeter, which is close to the outlet of the measured pipeline, and the nozzle flowmeter is connected with the densimeter through an isopiestic pipe.
2. The device for measuring a gas-liquid two-phase flow by using a nozzle flow meter according to claim 1, wherein the nozzle flow meter comprises a nozzle body and a measuring pipe fitting, the nozzle body is arranged in the measuring pipe fitting, a first measuring pipe and a second measuring pipe are arranged on the circumferential outer wall of the measuring pipe fitting at intervals, the first measuring pipe and the second measuring pipe are positioned at two ends of the nozzle body, the first measuring pipe and the second measuring pipe are arranged at two sides of the measuring pipe fitting, and the first measuring pipe and the second measuring pipe are respectively used for connecting a high-pressure taking pipe and a low-pressure taking pipe.
3. The device for measuring a gas-liquid two-phase flow by using a nozzle flowmeter according to claim 2, wherein two ends of the measuring pipe fitting are respectively used for connecting a measured pipeline, the nozzle body comprises a tubular nozzle and a throttling channel, one end of the tubular nozzle is a connecting end, the connecting end is used for connecting the inner wall of the measuring pipe fitting close to the first measuring pipe, one end of the tubular nozzle away from the connecting end is arranged towards the second measuring pipe, the throttling channel is arranged in the tubular nozzle, and the throttling channel is used for communicating the measured pipelines at two ends of the measuring pipe fitting.
4. A device for measuring a gas-liquid two-phase flow using a nozzle flow meter as set forth in claim 3, wherein the inner walls of both ends of the measuring tube are provided with internal threads for threaded connection with pipe fittings having different inner diameters.
5. The apparatus for measuring a gas-liquid two-phase flow using a nozzle flow meter according to claim 4, wherein the pipe installation member comprises a threaded ring, a hexagonal nut, and a quick connection pipe, one end of the threaded ring is used for being screwed with the internal thread, the other end of the threaded ring is connected with the quick connection pipe, and the hexagonal nut is arranged on a circumferential outer wall of the quick connection pipe near one end of the threaded ring.
6. The device for measuring a gas-liquid two-phase flow using a nozzle flow meter according to claim 5, wherein an annular protrusion is provided at an end of the nipple remote from the screw ring, the annular protrusion is provided on a circumferential outer wall of the nipple, and a plurality of rubber sealing rings are provided between the annular protrusion and the hexagonal nut.
7. The apparatus for measuring a gas-liquid two-phase flow using a nozzle flow meter as set forth in claim 6, wherein said high pressure tap and said low pressure tap are each adapted to be connected to a flow meter, said flow meter comprising a differential pressure transmitter, a valve block, said high pressure tap and said low pressure tap being each connected to said differential pressure transmitter via a valve block.
8. The device for measuring a gas-liquid two-phase flow by a nozzle flow meter according to claim 7, wherein a protective shell is arranged outside the nozzle flow meter, the protective shell is composed of two symmetrical shells, one ends of the two shells are hinged by a hinge rod, the other ends of the two shells are provided with a containing cavity, the top of the containing cavity is provided with a detachable piece, the detachable piece is used for detachably connecting the two shells, and the containing cavity is internally provided with the nozzle flow meter.
9. The device for measuring gas-liquid two-phase flow by using a nozzle flowmeter according to claim 8, wherein an arc plate is arranged at one end of the shell close to the hinging rod, the arc plate openings of the two shells are oppositely arranged, and the two arc plates are used for being clamped on the circumferential outer wall of the measured pipeline;
sealing rubber pads are arranged on two sides of the adjacent surfaces of the two shells.
10. The apparatus for measuring a gas-liquid two-phase flow with a nozzle flow meter according to claim 9, wherein an observation hole is provided in an end of the housing adjacent to the receiving chamber, and a glass plate is provided in the observation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320390088.7U CN219656937U (en) | 2023-03-06 | 2023-03-06 | Device for measuring gas-liquid two-phase flow by nozzle flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320390088.7U CN219656937U (en) | 2023-03-06 | 2023-03-06 | Device for measuring gas-liquid two-phase flow by nozzle flowmeter |
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| Publication Number | Publication Date |
|---|---|
| CN219656937U true CN219656937U (en) | 2023-09-08 |
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ID=87879564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320390088.7U Active CN219656937U (en) | 2023-03-06 | 2023-03-06 | Device for measuring gas-liquid two-phase flow by nozzle flowmeter |
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| Country | Link |
|---|---|
| CN (1) | CN219656937U (en) |
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- 2023-03-06 CN CN202320390088.7U patent/CN219656937U/en active Active
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