CN215909912U - Gas-liquid two-phase flowmeter - Google Patents
Gas-liquid two-phase flowmeter Download PDFInfo
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- CN215909912U CN215909912U CN202122184204.3U CN202122184204U CN215909912U CN 215909912 U CN215909912 U CN 215909912U CN 202122184204 U CN202122184204 U CN 202122184204U CN 215909912 U CN215909912 U CN 215909912U
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Abstract
A gas-liquid two-phase flowmeter relates to the technical field of shale gas flow meters, and adopts the technical scheme that the flowmeter comprises a Venturi tube, an inlet pipe, an outlet pipe, an inlet outer sleeve, a middle outer sleeve, an outlet outer sleeve, an inlet pressure taking cavity, a middle pressure taking cavity and an outlet pressure taking cavity, wherein the inlet outer sleeve, the middle outer sleeve, the outlet outer sleeve, the inlet pressure taking cavity, the middle pressure taking cavity and the outlet pressure taking cavity are respectively arranged on the outer sides of the inlet pipe, the Venturi tube and the outlet pipe; the inlet pressure taking cavity is provided with an inlet pressure taking interface, the middle pressure taking cavity is provided with a middle pressure taking interface, and the outlet pressure taking cavity is provided with an outlet pressure taking interface; the inlet pipe, the venturi pipe and the outlet pipe are all made of hard alloy. The utility model enhances the wear resistance of the pipe fitting, weakens the scraping and dirtying degrees, increases the compressive strength, can bear the flow monitoring of high pressure or dangerous media, and improves the safety.
Description
Technical Field
The utility model relates to the technical field of shale gas flowmeters, in particular to a gas-liquid two-phase flowmeter.
Background
At present, a venturi tube structure is adopted in a part of the shale gas differential pressure type flowmeter in direct contact with shale gas, but the shale gas contains impurities such as fine gravel and the like, so that the flowmeter is easily subjected to erosion and abrasion, and the flowmeter directly purchased in the market has the advantages of large safety risk, short service life, high replacement frequency in a high-pressure environment, and great influence on the continuity of production.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gas-liquid two-phase flowmeter, aiming at the problem that in the prior art, the flowmeter is easy to erode and wear to cause large safety risk.
The utility model provides the following technical scheme: a gas-liquid two-phase flowmeter comprises a Venturi tube, an inlet pipe and an outlet pipe which are connected with two ends of the Venturi tube, and an inlet outer sleeve, a middle outer sleeve and an outlet outer sleeve which are respectively arranged at the outer sides of the inlet pipe, the Venturi tube and the outlet pipe; an inlet pressure taking cavity is arranged between the inlet outer sleeve and the inlet pipe, an inlet through hole for communicating the inlet pressure taking cavity with the inlet pipe is arranged on the inlet pipe, an intermediate pressure taking cavity is arranged between the intermediate outer sleeve and the Venturi tube, the Venturi tube is provided with an intermediate through hole for communicating the Venturi tube with the intermediate pressure taking cavity, an outlet pressure taking cavity is arranged between the outlet pipe and the outlet outer sleeve, and an outlet through hole for communicating the outlet pipe with the outlet pressure taking cavity is arranged on the outlet pipe; the inlet pressure taking cavity is provided with an inlet pressure taking interface, the middle pressure taking cavity is provided with a middle pressure taking interface, and the outlet pressure taking cavity is provided with an outlet pressure taking interface; the inlet pipe, the venturi pipe and the outlet pipe are all made of hard alloy.
Preferably, the Venturi tube further comprises a connecting flange, one end of each of the inlet outer sleeve and the outlet outer sleeve is welded with the middle outer sleeve, the other end of each of the inlet outer sleeve and the outlet outer sleeve is welded with one connecting flange, and the middle outer sleeve is welded with the Venturi tube; the connecting flange is provided with a connecting port, and the inlet pipe and the outlet pipe are in clearance fit with the corresponding connecting ports respectively.
Preferably, sealing members are further arranged between the inlet pipe and the outlet pipe and the corresponding connecting ports.
Preferably, the inlet pipe and the outlet pipe are in clearance fit with two ends of the venturi pipe respectively, and sealing parts are arranged between the inlet pipe and the outlet pipe and two ends of the venturi pipe respectively.
Preferably, the plurality of inlet through holes are uniformly arranged in the circumferential direction of the inlet pipe, the plurality of intermediate through holes are uniformly arranged in the circumferential direction of the venturi pipe, and the plurality of outlet through holes are uniformly arranged in the circumferential direction of the outlet pipe.
Preferably, the intermediate pressure taking cavity is provided with a plurality of intermediate pressure taking interfaces.
Preferably, the intermediate pressure taking cavity is also provided with a thermometer interface.
The utility model has the beneficial effects that: the inlet pipe, the venturi tube and the outlet pipe are all made of hard alloy, so that the wear resistance of the pipe fitting is enhanced, and the scraping and dirty degrees are weakened; the inlet outer sleeve, the middle outer sleeve and the outlet outer sleeve are additionally arranged, so that the compressive strength is increased, and the outer sleeve can effectively avoid the erosion and the abrasion of gravel in the shale gas, so that the flow monitoring of high pressure or dangerous media can be borne, and the safety is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Reference numerals: 11-inlet pipe, 12-Venturi tube, 13-outlet pipe, 21-inlet outer sleeve, 22-middle outer sleeve, 23-outlet outer sleeve, 31-inlet pressure taking cavity, 32-middle pressure taking cavity, 33-outlet pressure taking cavity, 41-inlet through hole, 42-middle through hole, 43-outlet through hole, 51-inlet pressure taking interface, 52-middle pressure taking interface, 53-outlet pressure taking interface, 6-connecting flange and 61-connecting port.
Detailed Description
The embodiments of the present invention will be described in more detail with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments of the present invention after studying the specification. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The utility model provides a gas-liquid two-phase flowmeter as shown in figure 1, which comprises a Venturi tube 12, an inlet tube 11 and an outlet tube 13 which are connected with two ends of the Venturi tube 12, and an inlet outer sleeve 21, an intermediate outer sleeve 22 and an outlet outer sleeve 23 which are respectively arranged at the outer sides of the inlet tube 11, the Venturi tube 12 and the outlet tube 13; an inlet pressure taking cavity 31 is arranged between the inlet outer sleeve 21 and the inlet pipe 11, an inlet through hole 41 for communicating the inlet pressure taking cavity 31 with the inlet pipe 11 is arranged on the inlet pipe 11, an intermediate pressure taking cavity 32 is arranged between the intermediate outer sleeve 22 and the venturi tube 12, an intermediate through hole 42 for communicating the venturi tube 12 with the intermediate pressure taking cavity 32 is arranged on the venturi tube 12, an outlet pressure taking cavity 33 is arranged between the outlet pipe 13 and the outlet outer sleeve 23, and an outlet through hole 43 for communicating the outlet pipe 13 with the outlet pressure taking cavity 33 is arranged on the outlet pipe 13; the inlet pressure taking cavity 31 is provided with an inlet pressure taking interface 51, the intermediate pressure taking cavity 32 is provided with an intermediate pressure taking interface 52, and the outlet pressure taking cavity 33 is provided with an outlet pressure taking interface 53; the inlet pipe 11, the venturi pipe 12 and the outlet pipe 13 are all made of cemented carbide.
Specifically, the Venturi tube comprises a conical contraction section, a throat section and a conical diffusion section which are sequentially arranged, the cone angle of the conical contraction section can be 20-22 degrees, the cone angle of the conical diffusion section can be 7-15 degrees, the inlet tube is connected with the conical contraction section, the outlet tube is connected with the conical diffusion section, and pressure difference is formed among the throat section, the inlet tube and the outlet tube due to different tube diameters. The inlet pipe, the venturi pipe and the outlet pipe can be manufactured and molded by any existing processing method through hard alloy, and the hard alloy can be made of tungsten steel so as to enhance the wear resistance of the pipe fitting and weaken the scraping and dirty degree of the pipe fitting.
The outer sleeves of the inlet, the middle and the outlet are used for forming secondary protection at the outer sides of the inlet pipe, the Venturi pipe and the outlet pipe, and the outer sleeves can effectively avoid erosion abrasion of sand in shale gas, thereby enhancing the compressive strength of the utility model and reducing the safety risk of the utility model under high pressure.
The inlet pressure taking cavity, the middle pressure taking cavity and the outlet pressure taking cavity are all independent. The inlet pipe and the inlet outer sleeve can adopt round pipes with different diameters, one end of each of the inlet pipe and the inlet outer sleeve is sealed by a connecting flange, and the other end of each of the inlet pipe and the inlet outer sleeve is sealed by a combination of the middle outer sleeve and the Venturi tube to form an inlet pressure taking cavity. The outlet pressure taking cavity and the inlet pressure taking cavity have similar structures. The outer surface of the Venturi tube can be provided with an annular groove and then is sealed by an intermediate outer sleeve to form an intermediate pressure taking cavity. The inlet pressure-taking interface, the middle pressure-taking interface and the outlet pressure-taking interface can be connected with a pressure-leading pipeline in a threaded manner to lead out pressure. The pressure in the inlet pipe is transferred to the inlet pressure taking cavity through the inlet through hole and then is led out through the inlet pressure taking interface; the middle through hole can be arranged on the throat section, and can transmit the pressure of the throat section to the middle pressure taking cavity and then lead out the pressure by the middle pressure taking interface; the pressure in the outlet pipe is transmitted to the outlet pressure taking cavity through the outlet through hole and then is led out through the outlet pressure taking interface.
Preferably, the venturi tube further comprises a connecting flange 6, one end of each of the inlet outer sleeve 21 and the outlet outer sleeve 23 is welded with the middle outer sleeve 22, the other end of each of the inlet outer sleeve 21 and the outlet outer sleeve 23 is welded with one of the connecting flanges 6, and the middle outer sleeve 22 is welded with the venturi tube 12; the connecting flange 6 is provided with a connecting port 61, and the inlet pipe 11 and the outlet pipe 13 are in clearance fit with the corresponding connecting ports 61 respectively. The inlet outer sleeve, the middle outer sleeve, the outlet outer sleeve and the connecting flanges at the two ends are integrated in a welding mode, and the pipe fitting is convenient to install.
Preferably, sealing elements are further disposed between the inlet pipe 11 and the outlet pipe 13 and the corresponding connection ports 61, and the sealing elements may be rubber sealing rings.
Preferably, the inlet pipe 11 and the outlet pipe 13 are respectively in clearance fit with two ends of the venturi tube 12, and a sealing member is arranged between the inlet pipe 11 and the outlet pipe 13 and two ends of the venturi tube 12, and the sealing member may be a rubber sealing ring.
Preferably, the plurality of inlet through holes 41 are uniformly arranged in the circumferential direction of the inlet pipe 11, the plurality of intermediate through holes 42 are uniformly arranged in the circumferential direction of the venturi tube 12, and the plurality of outlet through holes 43 are uniformly arranged in the circumferential direction of the outlet pipe 13.
Preferably, the intermediate pressure taking chamber 32 is provided with a plurality of intermediate pressure taking ports 52.
Preferably, the intermediate pressure taking chamber 32 is further provided with a thermometer interface for connecting a thermometer to detect the temperature of the intermediate pressure taking chamber.
The foregoing is a detailed description of one or more embodiments of the utility model, which is set forth in more detail and is not intended to limit the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the spirit of the utility model, which falls within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A gas-liquid two-phase flowmeter, comprising a Venturi tube (12) and an inlet pipe (11) and an outlet pipe (13) connected to both ends of the Venturi tube (12), characterized in that: the device also comprises an inlet outer sleeve (21), a middle outer sleeve (22) and an outlet outer sleeve (23) which are respectively arranged at the outer sides of the inlet pipe (11), the Venturi pipe (12) and the outlet pipe (13); an inlet pressure taking cavity (31) is arranged between the inlet outer sleeve (21) and the inlet pipe (11), an inlet through hole (41) used for communicating the inlet pressure taking cavity (31) with the inlet pipe (11) is arranged on the inlet pipe (11), an intermediate pressure taking cavity (32) is arranged between the intermediate outer sleeve (22) and the Venturi tube (12), an intermediate through hole (42) used for communicating the Venturi tube (12) with the intermediate pressure taking cavity (32) is arranged on the Venturi tube (12), an outlet pressure taking cavity (33) is arranged between the outlet pipe (13) and the outlet outer sleeve (23), and an outlet through hole (43) used for communicating the outlet pipe (13) with the outlet pressure taking cavity (33) is arranged on the outlet pipe (13); the inlet pressure taking cavity (31) is provided with an inlet pressure taking interface (51), the middle pressure taking cavity (32) is provided with a middle pressure taking interface (52), and the outlet pressure taking cavity (33) is provided with an outlet pressure taking interface (53); the inlet pipe (11), the venturi pipe (12) and the outlet pipe (13) are all made of hard alloy.
2. A gas-liquid two-phase flow meter according to claim 1, wherein: the Venturi tube is characterized by further comprising a connecting flange (6), one end of each of the inlet outer sleeve (21) and the outlet outer sleeve (23) is welded with the middle outer sleeve (22), the other end of each of the inlet outer sleeve and the outlet outer sleeve is welded with the connecting flange (6), and the middle outer sleeve (22) is welded with the Venturi tube (12); the connecting flange (6) is provided with a connecting port (61), and the inlet pipe (11) and the outlet pipe (13) are in clearance fit with the corresponding connecting ports (61) respectively.
3. A gas-liquid two-phase flow meter according to claim 2, wherein: sealing elements are arranged between the inlet pipe (11) and the outlet pipe (13) and the corresponding connecting ports (61).
4. A gas-liquid two-phase flow meter according to claim 1, wherein: the inlet pipe (11) and the outlet pipe (13) are in clearance fit with two ends of the Venturi pipe (12) respectively, and sealing pieces are arranged between the inlet pipe (11) and the outlet pipe (13) and two ends of the Venturi pipe (12) respectively.
5. A gas-liquid two-phase flow meter according to claim 1, wherein: the plurality of inlet through holes (41) are uniformly arranged in the circumferential direction of the inlet pipe (11), the plurality of intermediate through holes (42) are uniformly arranged in the circumferential direction of the venturi tube (12), and the plurality of outlet through holes (43) are uniformly arranged in the circumferential direction of the outlet pipe (13).
6. A gas-liquid two-phase flow meter according to claim 1, wherein: the intermediate pressure taking cavity (32) is provided with a plurality of intermediate pressure taking interfaces (52).
7. A gas-liquid two-phase flow meter according to claim 1, wherein: the middle pressure taking cavity (32) is also provided with a thermometer interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122184204.3U CN215909912U (en) | 2021-09-10 | 2021-09-10 | Gas-liquid two-phase flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122184204.3U CN215909912U (en) | 2021-09-10 | 2021-09-10 | Gas-liquid two-phase flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215909912U true CN215909912U (en) | 2022-02-25 |
Family
ID=80294401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122184204.3U Active CN215909912U (en) | 2021-09-10 | 2021-09-10 | Gas-liquid two-phase flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215909912U (en) |
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2021
- 2021-09-10 CN CN202122184204.3U patent/CN215909912U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220826 Address after: 610000 No. 6, floor 2, building 1, No. 266, Guanghua North Fifth Road, Qingyang District, Chengdu, Sichuan Patentee after: Sichuan Whist Energy Equipment Co.,Ltd. Patentee after: SICHUAN KEHONG OIL AND GAS ENGINEERING CO.,LTD. Patentee after: CHENGDU HUICHUAN XINNENG TECHNOLOGY CO.,LTD. Address before: No. 272, Xinhong Road, Chenghua Avenue, Chenghua District, Chengdu, Sichuan 610000 Patentee before: SICHUAN KEHONG OIL AND GAS ENGINEERING CO.,LTD. Patentee before: CHENGDU HUICHUAN XINNENG TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right |