CN113220040B - Chemical agent injection flow adjusting system - Google Patents
Chemical agent injection flow adjusting system Download PDFInfo
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- CN113220040B CN113220040B CN202110496947.6A CN202110496947A CN113220040B CN 113220040 B CN113220040 B CN 113220040B CN 202110496947 A CN202110496947 A CN 202110496947A CN 113220040 B CN113220040 B CN 113220040B
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- control valve
- control
- calibration
- pipeline
- flow
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
Abstract
The invention provides a chemical injection flow adjusting system. The utility model provides a chemical agent injection flow timing system, includes control system, medicament jar, inlet channel, calibration post, calibration pipeline, flow pump, liquid outlet pipe and is used for the flow control mechanism of regulating flow pump speed, is equipped with first control valve on the liquid outlet pipe between medicament jar and the calibration pipeline, is equipped with the second control valve on the calibration pipeline, and control system and first control valve, second control valve and flow control mechanism are independent control connection respectively. The invention carries out chemical agent filling and adjusting, overcomes the defect that the traditional chemical agent filling and adjusting operation needs manual field operation, and provides a design for realizing remote control filling and accurate adjustment of chemical agent filling amount by improving the valve design of a chemical agent filling device and carrying out automatic program control, thereby liberating manpower and leading the filling amount to be more accurate.
Description
Technical Field
The invention relates to the technical field of reagent filling and adjusting, in particular to a chemical agent injection flow adjusting system.
Background
The operation of injecting chemical agents is widely applied to the oil and gas industry and other industries, particularly, the corrosion inhibitor and the bactericide are continuously injected into the oil and gas pipeline in the daily operation process of the oil and gas pipeline, so that the internal corrosion of the pipeline wall can be reduced, the service life of the pipeline is prolonged, and the safety and the stability of the operation of the pipeline are ensured. In addition, the amount of chemical agent to be added is critical. With the advance of platform unmanned, the need of an oil production platform for intellectualization is more and more urgent, the operation of adding chemical agents is taken as a powerful means for guaranteeing the safe operation of oil and gas pipelines, and remote control operation must be realized to achieve the aim of gradually realizing platform unmanned production, but most of the operations adopted on the production platform at present are manual on-site chemical agent adding and adjusting operations, the flow rate of chemical agent injection cannot be automatically adjusted, and the flow rate cannot be accurately controlled by manual operation; for example, chinese patent CN202531114U discloses a chemical reagent injection device, which comprises a liquid tank, a delivery pump, a filter and a liquid delivery pipeline; the output pressure can be adjusted steplessly; but it cannot realize the automatic flow adjustment without human operation.
Disclosure of Invention
The invention provides a chemical injection flow rate adjusting system for solving the problems that most of the prior production platforms are operated by manual field injection and adjustment of chemical agents, the flow rate of the injected chemical agents cannot be automatically adjusted, and the flow rate cannot be accurately controlled by manual operation. The invention can realize automatic flow adjustment under unmanned operation and also meet manual adjustment.
In order to solve the technical problems, the invention adopts the technical scheme that: a chemical agent injection flow adjusting system comprises a control system, an agent tank, a liquid inlet pipeline, a calibration column, a calibration pipeline, a flow pump, a liquid outlet pipeline and a flow adjusting mechanism for adjusting the flow rate of the flow pump, wherein the flow adjusting mechanism is connected to the flow pump; a first control valve is arranged on a liquid outlet pipeline between the medicament tank and the calibration pipeline, a second control valve is arranged on the calibration pipeline, and the control system is respectively and independently controlled and connected with the first control valve, the second control valve and the flow regulating mechanism.
Furthermore, flow control mechanism includes motor cabinet, slide, motor and rotates sealing connection and be in flow control knob on the flow pump, the top of motor cabinet is equipped with the slide rail, the bottom surface sliding connection of slide is in on the slide rail, the main part fixed mounting of motor is in the top surface of slide, the output shaft of motor with flow control knob is located the outside one end of flow pump is connected, control system with the motor independent control is connected.
Preferably, the motor is a stepper motor.
Furthermore, the top of the calibration column is also connected with an overflow pipe.
Furthermore, the outlet of the calibration column is also provided with a liquid level sensor, and the control system is in communication connection with the liquid level sensor.
Further, a liquid inlet control valve is further arranged on a liquid inlet pipeline between the first control valve and the liquid outlet of the medicament tube, and the control system is connected with the liquid inlet control valve in an independent control mode.
Furthermore, a liquid outlet control valve is further arranged on the liquid outlet pipeline, and the control system is independently connected with the liquid outlet control valve in a control mode.
Further, a pressure sensor is further arranged on the liquid outlet pipeline, and the pressure sensor is in communication connection with the control system.
Furthermore, the control system comprises a main control module, a first timer and a second timer, wherein the main control module is independently connected with the first control valve, the second control valve, the motor, the liquid level sensor, the pressure sensor, the first timer and the second timer respectively.
Preferably, the first control valve and the second control valve are both pneumatic control valves.
Compared with the prior art, the beneficial effects are that:
the invention carries out chemical agent filling and adjustment through the process system design, overcomes the defect that the traditional chemical agent filling and adjustment operation needs manual field operation, provides a design for realizing remote control filling and accurate adjustment of chemical agent filling amount through improving the valve design of a chemical agent filling device and carrying out automatic control, liberates manpower and has more accurate filling amount.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1, the system for adjusting injection flow of chemical agent comprises a control system, an agent tank 1, a liquid inlet pipeline 4, a calibration pipeline 5, a calibration column 16, a flow pump 7, a liquid outlet pipeline 15 and a flow adjusting mechanism for adjusting the flow rate of the flow pump 7, wherein the flow adjusting mechanism is connected to the flow pump 7, one end of the liquid inlet pipeline 4 is connected to a liquid outlet of the agent tank 1, the other end of the liquid inlet pipeline is connected to a liquid inlet end of the flow pump 7, the liquid outlet pipeline 15 is connected to a liquid outlet end of the flow pump 7, one end of the calibration pipeline 5 is connected to an outlet of the calibration column 16, and the other end of the calibration pipeline is communicated with the liquid inlet pipeline 4; a first control valve 3 is arranged on a liquid outlet pipeline 15 between the medicament tank 1 and the calibration pipeline 5, a second control valve 6 is arranged on the calibration pipeline 5, and a control system is respectively and independently connected with the first control valve 3, the second control valve 6 and the flow regulating mechanism in a control way; the first control valve 3 and the second control valve 6 are both pneumatic control valves.
The flow adjusting mechanism comprises a motor base 8, a sliding plate 9, a motor 10 and a flow adjusting knob 12 connected to the flow pump 7 in a rotating and sealing mode, a sliding rail is arranged at the top of the motor base 8, the bottom surface of the sliding plate 9 is connected to the sliding rail in a sliding mode, a main body of the motor 10 is fixedly installed on the top surface of the sliding plate 9, an output shaft of the motor 10 is connected with one end, located outside the flow pump 7, of the flow adjusting knob 12 through a connecting sleeve 11, and a control system is connected with the motor 10 in an independent control mode. The motor 10 is a stepper motor 10.
The top of the calibration column 16 and the top of the medicament tank 1 are both connected with an overflow pipe 18; a liquid level sensor 17 is also arranged at the outlet of the calibration column 16, and the control system is in communication connection with the liquid level sensor 17; a liquid inlet control valve 2 is also arranged on a liquid inlet pipeline 4 between the first control valve 3 and the liquid outlet of the medicament tube, and a control system is independently controlled and connected with the liquid inlet control valve 2; the liquid outlet pipeline 15 is also provided with a liquid outlet control valve 14, the control system is independently controlled and connected with the liquid outlet control valve 14, the liquid outlet pipeline 15 is also provided with a pressure sensor 13, and the pressure sensor 13 is in communication connection with the control system.
The control system comprises a main control module, a first timer and a second timer, wherein the main control module is independently connected with the first control valve 3, the second control valve 6, the motor 10, the liquid level sensor 17, the pressure sensor 13, the first timer and the second timer respectively.
The present embodiment is operable in two modes of operation, one being a manual mode, i.e. remotely opening and closing the respective valves from the operator station, manually giving the stepper motor 10 a predetermined volume value for controlling the displacement of the chemical tank 1; the step of adjusting the manual mode generally comprises:
s1, remotely opening a liquid inlet control valve 2 and a second control valve 6, closing a liquid outlet control valve 14, starting liquid inlet of a calibration column 16, closing a first control valve 3, opening the liquid outlet control valve 14 and clicking a second timer to start timing when a liquid level sensor 17 displays a certain liquid level;
s2, when the second timer counts for 1 minute (the time can be adjusted according to actual conditions), stopping timing, opening the first control valve 3, and closing the second control valve 6;
s3, the program calculates the filling amount of the chemical agent tank 1 for 1 day according to the liquid level change of the calibration column 16, and compares the filling amount with a set value, and the stepping motor 10 starts to carry out forward transmission or reverse transmission to carry out fine adjustment on the filling amount of the chemical agent tank 1;
and S4, repeating the steps (S1) - (S3) until the injection amount reaches the required value.
More often, the embodiment adopts a second operation mode, namely an automatic adjustment mode, and the specific operation steps are as follows:
s11, a first timer in the control system counts time for 12 hours in an accumulated mode (the time can be adjusted according to actual conditions), an automatic adjusting program is started to be executed, and a central control operating system sends out a prompt alarm;
s12, remotely opening the liquid inlet control valve 2 and the second control valve 6, closing the liquid outlet control valve 14, starting liquid inlet of the calibration column 16, closing the first control valve 3, opening the liquid outlet control valve 14 and starting timing by a second timer in the control system when the liquid level sensor 17 displays 1000 ml;
s13, stopping timing when the second timer 2 times for 1 minute, opening the first control valve 3, and closing the second control valve 6;
s14, comparing the actual filling amount calculated by the control system according to the liquid level and the time with a set value, and starting forward transmission or reverse transmission by the stepping motor 10 to finely adjust the injection amount of the chemical agent tank 1;
s15, the control system repeats the steps (S12) - (S14) until the error between the actually calculated injection amount and the injection amount value set by the control system is less than or equal to 5 percent;
and S16, after the automatic adjustment is finished, continuous liquid injection is started, and the first timer is restarted to count time until the next 12 hours.
In this embodiment, chemical filling and injection amount adjustment can be performed remotely, a filling amount is set by a control system, the stepping motor 10 drives the chemical tank 1 to screw in and screw out the flow adjusting knob 12 in a forward or reverse direction, the displacement of the flow adjusting knob 12 drives the stepping motor 10 to horizontally move on a base slide rail, so that the filling amount is adjusted, the actual filling amount is calculated by lowering the liquid level of the calibration column 16 and compared with the set value, the filling amount is finely adjusted, when the flow adjusting knob 12 rotates to 100% of scales and 0% of scales, the stepping motor 10 reaches an upper limit and a lower limit, and the control system performs fault protection on the stepping motor 10 by forcibly powering off the power.
The device performs coarse adjustment manually before fine adjustment of the injection amount of the chemical agent, specifically, the set injection amount is manually input by a control system, and a stepping motor 10 drives a flow adjusting knob 12 to directly rotate to a corresponding flow scale according to a program instruction. At the moment, the injection quantity error is large, manual fine adjustment or automatic fine adjustment is needed next step, the injection quantity is adjusted by increasing the pulse number of the stepping motor 10 during fine adjustment, the set value is compared with the calculated value of the liquid quantity reduction of the calibration column 16, and finally the target injection quantity is achieved; the auto-tune function executes the program instructions every 12 hours.
Through the process design of this embodiment, according to the actual service behavior contrast, utilize new processing method to carry out chemical agent filling and timing, overcome the shortcoming that traditional filling and timing chemical agent operation must artifical field operation, through improving the valve design of chemical agent filling device and carrying out automatic program control, provide one kind and realize the design of remote control filling and accurate timing chemical agent injection volume, liberated the manpower, the injection volume is more accurate.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A chemical agent injection flow adjusting system is characterized by comprising a control system, an agent tank (1), a liquid inlet pipeline (4), a calibration column (16), a calibration pipeline (5), a flow pump (7), a liquid outlet pipeline (15) and a flow adjusting mechanism for adjusting the flow rate of the flow pump (7), wherein the flow adjusting mechanism is connected to the flow pump (7), one end of the liquid inlet pipeline (4) is connected with a liquid outlet of the agent tank (1), the other end of the liquid inlet pipeline is connected with a liquid inlet end of the flow pump (7), the liquid outlet pipeline (15) is connected with a liquid outlet end of the flow pump (7), one end of the calibration pipeline (5) is connected to an outlet of the calibration column (16), and the other end of the calibration pipeline is communicated with the liquid inlet pipeline (4); a liquid level sensor (17) is further arranged at an outlet of the calibration column (16), a first control valve (3) is arranged on a liquid outlet pipeline (15) between the medicament tank (1) and the calibration pipeline (5), a second control valve (6) is arranged on the calibration pipeline (5), and the control system is respectively and independently connected with the first control valve (3), the second control valve (6), the liquid level sensor (17) and the flow regulating mechanism in a control mode; the flow adjusting mechanism comprises a motor base (8), a sliding plate (9), a motor (10) and a flow adjusting knob (12) which is connected to the flow pump (7) in a rotating and sealing mode, a sliding rail is arranged at the top of the motor base (8), the bottom surface of the sliding plate (9) is connected to the sliding rail in a sliding mode, the main body of the motor (10) is fixedly installed on the top surface of the sliding plate (9), the output shaft of the motor (10) is connected with one end, located outside the flow pump (7), of the flow adjusting knob (12), and the control system is connected with the motor (10) in an independent control mode;
the control system is in communication connection with the liquid level sensor (17); the liquid outlet pipeline (15) is also provided with a pressure sensor (13), and the pressure sensor (13) is in communication connection with the control system; the control system comprises a main control module, a first timer and a second timer, wherein the main control module is respectively and independently connected with the first control valve (3), the second control valve (6), the motor (10), the liquid level sensor (17), the pressure sensor (13), the first timer and the second timer.
2. The chemical injection flow calibration system according to claim 1, wherein the motor (10) is a stepper motor (10).
3. Chemical injection flow rate calibration system according to claim 1, characterized in that an overflow pipe (18) is further connected to the top of the calibration column (16).
4. The chemical agent injection flow calibration system according to claim 1, wherein a liquid inlet control valve (2) is further disposed on the liquid inlet pipeline (4) between the first control valve (3) and the liquid outlet of the chemical agent tank (1), and the control system is in independent control connection with the liquid inlet control valve (2).
5. The calibration system for injection flow rate of chemical agent according to claim 1, wherein a liquid outlet control valve (14) is further disposed on the liquid outlet pipe (15), and the control system is independently connected to the liquid outlet control valve (14).
6. The chemical injection flow calibration system according to claim 1, wherein the first control valve (3) and the second control valve (6) are pneumatic control valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110496947.6A CN113220040B (en) | 2021-05-07 | 2021-05-07 | Chemical agent injection flow adjusting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110496947.6A CN113220040B (en) | 2021-05-07 | 2021-05-07 | Chemical agent injection flow adjusting system |
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| Publication Number | Publication Date |
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| CN113220040A CN113220040A (en) | 2021-08-06 |
| CN113220040B true CN113220040B (en) | 2023-02-07 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2410284Y (en) * | 1999-12-21 | 2000-12-13 | 刘海侠 | Intelligent environmental protection unattended medicine supply device |
| JP4474628B2 (en) * | 2001-01-22 | 2010-06-09 | 正太郎 岡 | Automatic titrator |
| CN206008664U (en) * | 2016-08-27 | 2017-03-15 | 大连劳雷石油化工泵制造有限公司 | A kind of automatic dosing control system |
| CN212986777U (en) * | 2020-08-05 | 2021-04-16 | 马强 | Frequency conversion multipurpose medicament filling device |
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