CN213902990U - Sampling pipeline capable of extracting continuously - Google Patents
Sampling pipeline capable of extracting continuously Download PDFInfo
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- CN213902990U CN213902990U CN202022753695.4U CN202022753695U CN213902990U CN 213902990 U CN213902990 U CN 213902990U CN 202022753695 U CN202022753695 U CN 202022753695U CN 213902990 U CN213902990 U CN 213902990U
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Abstract
Providing a sampling pipeline with uninterrupted extraction, wherein two sampling pipes are arranged on a main pipe, and a water pump and an electromagnetic valve are respectively arranged on each sampling pipe; the signal acquisition device comprises a current monitor arranged on the water pump; the control device comprises a PLC (programmable logic controller) and a DCS (distributed control system), wherein the PLC receives the collected working current parameters of the water pump and sends control signals to a lower stage according to the current parameters; the measuring instrument is connected with the sampling tube and is electrically connected with the PLC; the water pump and the electromagnetic valve are correspondingly provided with relays, and each relay controls the opening/closing action of each water pump and/or the electromagnetic valve according to a control signal so as to realize that one sampling tube is automatically switched to the other sampling tube when the other sampling tube is blocked; according to the scheme, the structure is simple, the PLC is automatically switched to the other sampling tube when one sampling tube is blocked according to the current parameters of the water pump, the backwashing valve is synchronously controlled to be opened to perform backwashing on the blocked sampling tube, so that the sampling is uninterrupted, and the continuity of the measurement data is ensured.
Description
Technical Field
The utility model relates to a sampling device, concretely relates to extract incessant sample pipeline.
Background
In thermoelectric production, as a rule, the sampling line is blocked due to the fact that the measuring medium is not completely pure and free of impurities, or due to long-term corrosion of chemical substances or mutual reaction, and the normal operation of the main measuring equipment is interrupted, and even the equipment is damaged in severe cases. However, the conventional inspection cannot accurately judge the blockage of the pipeline, and the maintenance needs to stop the on-line measuring equipment after the blockage of the sampling pipeline, so that the measured data is discontinuous, which is not allowed in some special cases. The solution provided by the prior art for the problem has complex pipelines, does not form uniform specifications, cannot realize automatic switching, brings lots of troubles in actual production, and has high maintenance cost.
SUMMERY OF THE UTILITY MODEL
To the technical problem that above-mentioned exists, the utility model provides an extract incessant sample pipeline.
In order to realize the purpose, the utility model discloses the technical scheme who takes is:
an uninterrupted sampling pipeline for sampling comprises,
the sampling device comprises a main pipe, a water pump, a solenoid valve and a sampling pipe, wherein two sampling pipes are arranged on the main pipe, and a water pump and a solenoid valve are respectively arranged on each sampling pipe;
the signal acquisition device comprises a current monitor arranged on the water pump and is used for acquiring the working current of the water pump;
the control device comprises a PLC and a DCS, wherein the PLC is used for receiving the collected working current parameters of the water pump, sending control signals to a lower stage according to the current parameters, and synchronously transmitting data to the DCS to realize remote monitoring;
the measuring instrument is connected with the sampling tube and is electrically connected with the PLC;
the water pump and the electromagnetic valve are correspondingly provided with relays, and each relay controls the opening/closing action of each water pump and/or the electromagnetic valve according to a control signal so as to realize that one sampling tube is automatically switched to the other sampling tube when the other sampling tube is blocked;
and the power supply device is used for providing a working power supply for the PLC, the DCS, the water pump, the electromagnetic valve, the measuring instrument and the relay.
Further, in the sampling pipeline for pumping uninterrupted sampling, the two sampling pipes are provided with a back flush valve between the electromagnetic valve and the water pump, the back flush valve is correspondingly provided with a relay, and the relay performs opening/closing actions according to control signals so as to realize back flush on the blocked sampling pipe after switching to the other sampling pipe when one sampling pipe is blocked.
Further, in the above sampling pipeline, the power supply device includes a power supply module connected to the control device and a power supply control module connected to each relay.
The embodiment of the utility model provides a beneficial effect is: the sampling device is simple in structure, the PLC is automatically switched to the other sampling tube when one sampling tube is blocked according to current parameters of the water pump, the backwashing valve is synchronously controlled to be opened to perform backwashing on the blocked sampling tube, and the sampling device is matched with a DCS (distributed control system) system to perform remote monitoring and alarming, so that the sampling is uninterrupted, and the continuity of measured data is ensured.
Drawings
FIG. 1 is a schematic view of the structure of the sampling pipe of the present invention;
fig. 2 is a schematic diagram of the circuit system structure of the present invention.
Reference numerals in the drawings of the specification include: the device comprises a main pipe 1, a first sampling pipe 2, a second sampling pipe 3, a first water pump 4, a first electromagnetic valve 5, a second water pump 6, a second electromagnetic valve 7, a PLC (programmable logic controller) 8, a measuring instrument 9 and a back flush valve 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1: with reference to FIGS. 1 and 2
The present solution provides a sampling pipeline with continuous pumping, comprising,
the sampling device comprises a main pipe 1, wherein a first sampling pipe 2 and a second sampling pipe 3 are arranged on the main pipe 1, a first water pump 4 and a first electromagnetic valve 5 are arranged on the first sampling pipe 2, and a second water pump 6 and a second electromagnetic valve 7 are arranged on the second sampling pipe 3;
the signal acquisition device comprises a first current monitor arranged on the first water pump 4 and a second current monitor arranged on the second water pump 6 and is used for acquiring the working current of the first water pump 4 and/or the second water pump 6;
the control device comprises a PLC (programmable logic controller) 8 and a DCS (distributed control system), wherein the PLC 8 is used for receiving the collected working current parameters of the first water pump 4 and/or the second water pump 6, sending control signals to a lower stage according to the current parameters, and synchronously transmitting data to the DCS so as to realize remote monitoring and alarming;
a measuring instrument 9 connected to the first sampling tube 2 and the second sampling tube 3 and electrically connected to the PLC controller 8;
the first water pump 4 is provided with a first relay, the first electromagnetic valve 5 is provided with a second relay, the second water pump 6 is provided with a third relay, the first electromagnetic valve 5 is provided with a fourth relay, and the relays control the opening/closing actions of the water pumps and/or the electromagnetic valves according to control signals so as to realize automatic switching to the other sampling pipe when the first sampling pipe 2 or the second sampling pipe 3 is blocked;
the power supply device comprises a power supply module connected with the control device and power supply control modules connected with the relays, wherein the power supply module is used for providing working power supply for the PLC controller 8, the DCS system, the first water pump 4, the first electromagnetic valve 5, the second water pump 6, the second electromagnetic valve 7, the measuring instrument 9 and the relays, and the power supply control module is used for controlling whether the relays are electrified or not.
The working principle is as follows: for example, the first sampling pipe 2 is a common sampling pipe, the second sampling pipe 3 is a standby pipe, under the normal sampling state, the first water pump 4 is opened, the first electromagnetic valve 5 is fully opened or partially opened, the second water pump 6 is stopped, the second electromagnetic valve 7 is normally closed, the first current monitor collects the working current of the first water pump 4 in real time, and transmits the working current parameter of the first water pump 4 to the data collection module of the PLC controller 8, the collection module stores the current parameter of the first water pump 4 into the I/O mapping area, then reads the user program from the user program memory one by one, after the command interpretation, the result of the logic or arithmetic operation is executed according to the instruction specification is sent into the I/O mapping area or the data register, and finally the output state of the I/O mapping area or the data in the output register is transmitted to the corresponding output device, namely when the first sampling pipe 2 is blocked, the PLC controller 8 outputs a control signal for closing the first water pump 4 to the relay I, sends a control signal for closing the first electromagnetic valve 5 to the relay II, sends a control signal for opening the second water pump 6 to the relay III, and sends a control signal for opening the second electromagnetic valve 7 to the relay IV, namely, the sampling is automatically switched to the second sampling tube 3 when the first sampling tube 2 is blocked, so that the sampling is uninterrupted, and the continuity of the measured data is ensured.
Example 2: with reference to FIGS. 1 and 2
Compared with the embodiment 1, the difference is that a back flush valve 10 is arranged between the first sampling pipe 2 and the second sampling pipe 3 between the first electromagnetic valve 5 and the second electromagnetic valve 7 and between the first water pump 4 and the second water pump 6, a relay five is correspondingly arranged on the back flush valve 10, and the relay performs opening/closing action according to a control signal so as to realize that when one sampling pipe is blocked, the blocked sampling pipe is back flushed after being switched to the other sampling pipe. When the first sampling tube 2 is blocked, the control of the PLC controller 8 is as described in embodiment 1, and the PLC controller 8 synchronously sends a control signal for opening the back flush valve 10 to the relay five, after the back flush is opened, the PLC controller is communicated with the first sampling tube 2 and the second sampling tube 3, and a medium part of the second sampling tube 3 enters the first sampling tube 2 through the back flush valve 10, so as to realize the back flush of the first sampling tube 2.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (3)
1. A sampling pipeline without interruption for extraction is characterized in that it comprises,
the device comprises a main pipe (1), wherein two sampling pipes are arranged on the main pipe (1), and a water pump and an electromagnetic valve are respectively arranged on each sampling pipe;
the signal acquisition device comprises a current monitor arranged on the water pump and is used for acquiring the working current of the water pump;
the control device comprises a PLC (programmable logic controller) (8) and a DCS (distributed control system), wherein the PLC (8) is used for receiving collected working current parameters of the water pump, sending control signals to a lower stage according to the current parameters, and synchronously transmitting data to the DCS to realize remote monitoring;
a measuring instrument (9) which is connected with the sampling tube and is electrically connected with the PLC (8);
the water pump and the electromagnetic valve are correspondingly provided with relays, and each relay controls the opening/closing action of each water pump and/or the electromagnetic valve according to a control signal so as to realize that one sampling tube is automatically switched to the other sampling tube when the other sampling tube is blocked;
and the power supply device is used for providing a working power supply for the PLC (8), the DCS system, the water pump, the electromagnetic valve, the measuring instrument (9) and the relay.
2. The decimating uninterrupted sampling line of claim 1, wherein: and the two sampling pipes are provided with a back flush valve (10) between the electromagnetic valve and the water pump, the back flush valve (10) is correspondingly provided with a relay, and the relay performs opening/closing actions according to a control signal so as to realize that the blocked sampling pipe is back flushed after being switched to the other sampling pipe when one sampling pipe is blocked.
3. The decimating uninterrupted sampling line of claim 1 or 2, wherein: the power supply device comprises a power supply module connected with the control device and a power supply control module connected with each relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022753695.4U CN213902990U (en) | 2020-11-24 | 2020-11-24 | Sampling pipeline capable of extracting continuously |
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| CN202022753695.4U CN213902990U (en) | 2020-11-24 | 2020-11-24 | Sampling pipeline capable of extracting continuously |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088505A (en) * | 2021-11-18 | 2022-02-25 | 光大水务科技发展（南京）有限公司 | Pretreatment device system of water treatment water quality detection instrument and working method thereof |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088505A (en) * | 2021-11-18 | 2022-02-25 | 光大水务科技发展（南京）有限公司 | Pretreatment device system of water treatment water quality detection instrument and working method thereof |
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