CN214096185U - Oil station oil gas recovery on-line measuring is with integral type pressure compensation vortex flowmeter - Google Patents
Oil station oil gas recovery on-line measuring is with integral type pressure compensation vortex flowmeter Download PDFInfo
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- CN214096185U CN214096185U CN202022937003.1U CN202022937003U CN214096185U CN 214096185 U CN214096185 U CN 214096185U CN 202022937003 U CN202022937003 U CN 202022937003U CN 214096185 U CN214096185 U CN 214096185U
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Abstract
The utility model discloses an integrated pressure compensation vortex shedding flowmeter for oil station oil gas recovery online detection, which comprises a signal detection part and a signal processing and transmitting part, the signal detection part comprises a vortex street vibration detection part and a first pressure sensor, the signal processing and transmitting part comprises a second pressure sensor, a safety isolation and data processing and transmitting module, the first and second pressure sensors are arranged inside and outside a channel through which a medium flows, the vortex oscillation detection is arranged in a medium flowing channel, the vortex oscillation detection of the signal detection part and the first pressure sensor are connected with the signal processing and transmitting part after signal processing, the signal processing and transmitting part acquires the vortex oscillation frequency and medium pressure in the pipeline in real time and the ambient atmospheric pressure acquired by the second pressure sensor for compensation and correction, and transmits the corrected and compensated flow to the secondary instrument.
Description
Technical Field
The utility model relates to a filling station's vapor recovery system equipment technical field specifically is an oil station vapor recovery system integrated pressure compensation vortex shedding flowmeter for on-line measuring.
Background
The existing vortex shedding flowmeter measures the volume of gas flowing through, but the gas pressure influences the density of the gas and influences the measurement volume, and the volume of the measured gas cannot truly reflect the detected gas volume under the conditions of different flow rates and different pressure differences of the same gas medium.
In the online detection application of the oil gas recovery of the oiling machine, a vortex flow meter detects a negative pressure area of an oil gas recovery pump, along with the change of the opening degree of an oil gun air return port valve, the colloid of an air return pipe is blocked, the suction force of an air return pump changes, the pressure change of negative pressure is large, the deviation of the online detected gas flow is large, the detection effect cannot be achieved, the requirement of 0.85-1.2 of the gas-liquid ratio of the oil filling amount and the air return amount cannot be really controlled, and the supervision requirement of an environmental protection department cannot be met.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide an oil station oil gas recovery integral type pressure compensation vortex street flowmeter for on-line measuring, through set up pressure sensor inside and outside the medium passage, use pressure data to correct flow data, guarantee that the gas-liquid ratio of adding oil volume and return-air volume is up to standard, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an oil station oil gas recovery on-line measuring is with integral type pressure compensation vortex flowmeter, includes signal detection portion and signal processing transmission portion, signal detection portion includes vortex street oscillation detection and first pressure sensor, signal processing transmission portion includes second pressure sensor, safety isolation and data processing transmission module, first pressure sensor and second pressure sensor arrange respectively at the inside and outside of the passageway of medium circulation, vortex street oscillation detection arranges in the passageway of medium circulation, vortex street oscillation detection (101), first pressure sensor (102) are connected with signal processing transmission portion (2) electricity, and second pressure sensor (201) are connected with data processing transmission module (202) electricity.
The second pressure sensor (201) and the data processing transmitting module (202) form a signal processing transmitting part (2), the signal processing transmitting part (2) acquires a signal of vortex shedding oscillation detection (101), and the first pressure sensor (102) and the second pressure sensor (201) are comprehensively compensated and corrected and transmitted to a secondary instrument.
As a preferred technical scheme of the utility model, flow detection portion includes the casing, be provided with the passageway that supplies the medium circulation in the casing, the passageway both sides are provided with the external screw thread that is used for the connecting tube respectively, first pressure sensor and vortex street oscillation detect the lateral wall and the inner channel intercommunication that run through the passageway respectively.
As a preferred technical scheme of the utility model, signal processing transmitting part includes the casing, the inside atmospheric pressure of casing is unanimous with external atmospheric pressure, second pressure sensor and data processing transmitting module equipartition are put inside the casing.
Compared with the prior art, the beneficial effects of the utility model are that: this oil station oil gas recovery integrated pressure compensation vortex flowmeter for on-line measuring carries out pressure difference compensation through inside and outside pressure synchronous detection, compensates vortex flowmeter because pressure variation to test result's influence, solves present vortex flowmeter and can only make the accurate purpose of data under the ideal laboratory condition, really reaches the practicality.
Drawings
FIG. 1 is a schematic view of a signal detection unit according to the present invention;
FIG. 2 is a schematic diagram of the signal processing transmitter of the present invention;
fig. 3 is a schematic connection diagram of the utility model in actual operation.
In the figure: 1 signal detection part, 101 vortex street oscillation detection, 102 first pressure sensor, 2 signal processing and transmitting part, 201 second pressure sensor and 202 data processing and transmitting module.
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. 1-3, the present invention provides a technical solution: an oil station oil gas recovery on-line measuring uses the integral type pressure compensation vortex flowmeter, including signal detection portion 1 and signal processing transmitting portion 2. The signal detection unit 1 includes a vortex shedding oscillation detector 101 and a first pressure sensor 102. The signal processing transmitter 2 includes a second pressure sensor 201 and a data processing transmitter module 202. The first pressure sensor 102 and the second pressure sensor 201 are disposed inside and outside a channel through which a medium flows, respectively, and the vortex street oscillation detection 101 is disposed in the channel through which the medium flows. The vortex street oscillation detector 101 and the first pressure sensor 102 are electrically connected to the signal processing and transmitting unit 2.
The signal detection part 1 comprises a shell, a channel for medium circulation is arranged in the shell, external threads for connecting pipelines are respectively arranged on two sides of the channel, and a first pressure sensor 102 and a vortex oscillation detector 101 respectively penetrate through the side wall of the channel and are communicated with an inner cavity of the channel.
The signal processing transmitting part 2 comprises a shell, the air pressure in the shell is consistent with the air pressure outside, and both the second pressure sensor 201 and the data processing transmitting module 202 are arranged in the shell.
The signal detection part 1 detects vortex street oscillation and first pressure and transmits the vortex street oscillation and the first pressure to the signal processing transmission part 2 to obtain signal data of the signal detection part 1, the two parts are connected by a cable, the signal detection part 1 is responsible for collecting vortex street pulse signals generated by fluid and pressure data in a pipeline, the vortex street pulse signals and the pressure data are transmitted to the signal processing transmission part 2 after being arranged by amplification, filtering and the like, the signal processing transmission part 2 is responsible for collecting atmospheric environment pressure and original flow and internal pressure data transmitted by the signal detection part 1, accurate flow data are output after pressure operation compensation, and the accurate flow data are transmitted to a secondary instrument.
Detecting the pressure of gas flowing through the vortex street in the pipeline and the atmospheric environment pressure; according to the formula: p1V1T1=P2V2T2(ii) a Wherein P is1: ambient atmospheric pressure, V1Normal atmospheric pressure flow volume, T1Temperature of gas, P2: gas pressure, V, of vortex shedding flowmeter2: volume of vortex street measurement, T2: the temperature of the gas flowing through the vortex street; the temperature of the gas flowing through was not changed: t is1=T2(ii) a Flow rate at atmospheric pressure: v1=（P2V2）/P1。
According to the product, a gas pressure sensor is embedded in the inner wall of the pipeline, an atmospheric environment pressure sensor is added in an external control panel, the gas pressure and the atmospheric environment pressure in the pipeline are monitored in real time, the CPU in the safety isolation and compensation transmitting part is used for collecting and calculating, and the flow data is corrected by using pressure data.
Through this design, the pressure compensation nature vortex flowmeter of design has reached the purpose of data compensation in the actual flow test contrast, has solved current vortex flowmeter in the in-service use process, because the test error that pressure leads to.
The biggest advantage of this design just lies in through pressure compensation, makes the flowmeter really can reflect the size of actual flow, solves the purpose that present vortex street flowmeter can only make the data accurate under the ideal laboratory condition, really reaches the practicality.
The utility model discloses an oil station oil gas recovery on-line measuring is with integral type pressure compensation vortex street flowmeter, including signal detection portion 1 and signal processing transmitting portion 2, signal detection portion 1 includes vortex street vibrations detection 101 and first pressure sensor 102, signal processing transmitting portion 2 includes second pressure sensor 201, safety isolation and data processing transmitting module 202, first pressure sensor 102 and second pressure sensor 201 arrange respectively in the passageway of medium circulation and outside, vortex street oscillation detection 101 measuring piece arranges in the passageway of medium circulation, vortex street oscillation detection 101, first pressure sensor 102 of signal detection portion 1 are connected with signal processing transmitting portion 2 after signal processing, and signal processing transmitting portion 2 acquires vortex street oscillation frequency and medium pressure in the pipeline in real time and compensates the correction with the atmospheric pressure that second pressure sensor 201 acquireed, and transmitting the corrected and compensated flow to a secondary instrument.
This oil station oil gas recovery integrated pressure compensation vortex street flowmeter for on-line measuring is through setting up pressure detection inside and outside the medium passageway, and the application pressure data revises flow data, guarantees that the gas-liquid ratio of adding oil volume and return-air volume is up to standard.
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 (3)
1. An integrated pressure compensation vortex street flowmeter for oil gas recovery online detection of an oil station comprises a signal detection part (1) and a signal processing and transmitting part (2); the method is characterized in that: the signal detection part (1) comprises a vortex street oscillation detection part (101) and a first pressure sensor (102), the signal processing transmission part (2) comprises a second pressure sensor (201), a safety isolation and data processing transmission module (202), the first pressure sensor (102) and the second pressure sensor (201) are respectively arranged inside and outside a channel through which a medium flows, the vortex street oscillation detection part (101) is arranged in the channel through which the medium flows, the vortex street oscillation detection part (101) and the first pressure sensor (102) are electrically connected with the signal processing transmission part (2), and the second pressure sensor (201) is electrically connected with the data processing transmission module (202).
2. The oil station oil gas recovery on-line measuring of claim 1 uses integral type pressure compensation vortex street flowmeter, its characterized in that: the signal detection part (1) comprises a shell, a channel for medium circulation is arranged in the shell, external threads for connecting pipelines are arranged on two sides of the channel respectively, and the first pressure sensor (102) and the vortex oscillation detector (101) penetrate through the side wall of the channel and are communicated with an inner cavity of the channel respectively.
3. The oil station oil gas recovery on-line measuring of claim 1 uses integral type pressure compensation vortex street flowmeter, its characterized in that: the signal processing transmitting part (2) comprises a shell, the air pressure in the shell is consistent with the air pressure outside, and the second pressure sensor (201) and the data processing transmitting module (202) are both arranged in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022937003.1U CN214096185U (en) | 2020-12-10 | 2020-12-10 | Oil station oil gas recovery on-line measuring is with integral type pressure compensation vortex flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022937003.1U CN214096185U (en) | 2020-12-10 | 2020-12-10 | Oil station oil gas recovery on-line measuring is with integral type pressure compensation vortex flowmeter |
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| CN214096185U true CN214096185U (en) | 2021-08-31 |
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| CN202022937003.1U Active CN214096185U (en) | 2020-12-10 | 2020-12-10 | Oil station oil gas recovery on-line measuring is with integral type pressure compensation vortex flowmeter |
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