CN214621578U

CN214621578U - Pipeline pressure detection device with closed-loop feedback function

Info

Publication number: CN214621578U
Application number: CN202023248901.2U
Authority: CN
Inventors: 符蓉; 陈鹭; 温金鑫; 胡淼
Original assignee: Tianjin Yumin Gas Meter Co ltd
Current assignee: Tianjin Yumin Gas Meter Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-11-05
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a pipeline pressure detection device with closed loop feedback function, including first pipeline, first pipeline one side is equipped with the pipeline import, pipeline import one side is equipped with the transmission pump, the pipeline import is located the input of transmission pump, just transmission pump and external power source electric connection, transmission pump one side is equipped with the controller mounting bracket, the controller mounting bracket with first pipeline is connected, the inside PLC controller that is equipped with of controller mounting bracket, PLC controller and external power source electric connection, first pipeline one side is equipped with the second pipeline, beneficial effect: the device is based on the principle of closed-loop feedback, when the pressure changes, a part of pressure can be returned to the output end when the pressure at the output end is too high, the purpose of automatically adjusting the pressure is achieved, the influence of the pressure on a pipeline system is reduced, and the possibility of paralysis of the pipeline system is greatly reduced.

Description

Pipeline pressure detection device with closed-loop feedback function

Technical Field

The utility model relates to a pipeline pressure detection field particularly, relates to a pipeline pressure detection device with closed loop feedback function.

Background

Pressure pipes are understood in a broad sense to mean all pipes which are subjected to an internal or external pressure, irrespective of the medium in the pipe. Pressure pipes are part of pipes for transporting, distributing, mixing, separating, discharging, metering, controlling and stopping the flow of fluids, and are assembled assemblies of pipes, tubes, flanges, bolted connections, gaskets, valves, other components or pressure parts and supports.

However, existing pipeline pressure tests have some disadvantages in use, such as:

the existing pipeline pressure detection device only simply detects the pipeline pressure, the pressure pipeline is a system, mutual correlation and mutual influence are realized, the whole body is dragged, when the pressure changes, the pipeline system can be influenced if the pressure cannot be automatically adjusted, and the paralysis of the pipeline system can be possibly caused.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline pressure detection device with closed loop feedback function to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a pipeline pressure detection device with a closed-loop feedback function comprises a first pipeline, wherein a pipeline inlet is formed in one side of the first pipeline, a transmission pump is arranged in one side of the pipeline inlet, the pipeline inlet is located at the input end of the transmission pump, the transmission pump is electrically connected with an external power supply, a controller mounting frame is arranged in one side of the transmission pump, the controller mounting frame is connected with the first pipeline, a PLC (programmable logic controller) is arranged inside the controller mounting frame and electrically connected with the external power supply, a second pipeline is arranged in one side of the first pipeline and communicated with the first pipeline, a pipeline outlet is formed in one side of the second pipeline and located at the output end of the transmission pump, a pressure sensor is arranged inside the second pipeline and electrically connected with the PLC, and a return pipe is arranged below the second pipeline, the backflow pipe is characterized in that one end of the backflow pipe is communicated with the second pipeline, the other end of the backflow pipe is communicated with the first pipeline, a pipeline electric valve is arranged inside the backflow pipe, the pipeline electric valve is electrically connected with the PLC, a backflow pump is arranged on one side of the pipeline electric valve and electrically connected with the PLC, a one-way valve is arranged on one side of the backflow pump, and the one-way valve is located inside the backflow pipe.

Furthermore, the first pipeline with second pipeline both ends all are equipped with flange, first pipeline with second pipeline flange joint.

Further, a stop valve is arranged inside the first pipeline.

Furthermore, a pressure gauge is arranged on the second pipeline, and one end of the pressure gauge is located inside the second pipeline.

Further, an emptying pipe is arranged on one side of the pressure gauge and communicated with the second pipeline, and an emptying valve is arranged in the emptying pipe.

Further, an emptying flange is arranged on the emptying pipe.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses a pipeline, including pipeline inlet, second pipeline output, make liquid medium get into under the effect of transmission pump behind the first pipeline through the pipeline inlet, get into the second pipeline, at this moment, liquid medium gets into after pressure sensor detects pressure when the second pipeline, pressure sensor is with pressure signal transmission to the PLC controller in, at this moment according to the pressure size in the second pipeline, decide whether pipeline motorised valve and backwash pump are got electric, when the too big influence rear pipeline of pressure in the second pipeline, the PLC controller makes pipeline motorised valve and backwash pump get electric simultaneously, thereby make the pipeline motorised valve can open the valve, make liquid medium flow direction reflux pipe inside, under the effect that the backwash pump got electric operation, first pipeline with a part of liquid medium in returning, thereby reach and reduce the pressure in the second pipeline.

(2) Through setting up flange, thereby reach first pipeline with second pipe connection's purpose, through setting up the stop valve, thereby reach when needs, can prevent that liquid medium from not getting into first pipeline, through setting up the manometer, thereby make operating personnel, clear observation pipeline's pressure, through setting up the blow-down pipe, thereby reach and open the purpose that can empty down liquid medium behind the blow-down valve, through the blow-down flange, thereby make the blow-down pipe can be connected with other pipelines.

(3) The device is based on the principle of closed-loop feedback, when the pressure changes, a part of pressure can be returned to the output end when the pressure at the output end is too high, the purpose of automatically adjusting the pressure is achieved, the influence of the pressure on a pipeline system is reduced, and the possibility of paralysis of the pipeline system is greatly reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a main structure of a pipeline pressure detecting device with a closed-loop feedback function according to an embodiment of the present invention;

fig. 2 is a left side view of a pipe inlet of a pipe pressure detecting apparatus with a closed-loop feedback function according to an embodiment of the present invention;

fig. 3 is a perspective view of an electrically operated valve of a pipeline in a pipeline pressure detecting device with a closed-loop feedback function according to an embodiment of the present invention.

Reference numerals:

1. a first conduit; 2. a pipeline inlet; 3. a transfer pump; 4. a controller mounting bracket; 5. a PLC controller; 6. a second conduit; 7. a conduit outlet; 8. a return pipe; 9. a pipeline electric valve; 10. a reflux pump; 11. A one-way valve; 12. a connecting flange; 13. a stop valve; 14. a pressure gauge; 15. an emptying pipe; 16. an atmospheric valve; 17. emptying the flange; 18. a pressure sensor.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

the first embodiment is as follows:

referring to fig. 1-3, a pipeline pressure detecting device with a closed-loop feedback function according to an embodiment of the present invention includes a first pipeline 1, a pipeline inlet 2 is disposed at one side of the first pipeline 1, a transmission pump 3 is disposed at one side of the pipeline inlet 2, the pipeline inlet 2 is located at an input end of the transmission pump 3, the transmission pump 3 is electrically connected to an external power source, a controller mounting frame 4 is disposed at one side of the transmission pump 3, the controller mounting frame 4 is connected to the first pipeline 1, a PLC controller 5 of model S7-400 is disposed inside the controller mounting frame 4, the PLC controller 5 is electrically connected to the external power source, a second pipeline 6 is disposed at one side of the first pipeline 1, the second pipeline 6 is communicated with the first pipeline 1, a pipeline outlet 7 is disposed at one side of the second pipeline 6, the pipeline outlet 7 is located at an output end of the transmission pump 3, the inside pressure sensor 18 that is equipped with the model for CYYZ11 of second pipeline 6, pressure sensor 18 and 5 electric connection of PLC controller, second pipeline 6 has back flow 8, back flow 8 one end with second pipeline 6 communicates with each other, just the back flow 8 other end with first pipeline 1 communicates with each other, the inside pipeline motorised valve 9 that is equipped with of back flow 8, pipeline motorised valve 9 with 5 electric connection of PLC controller, pipeline motorised valve 9 one side is equipped with backwash pump 10, backwash pump 10 with 5 electric connection of PLC controller, backwash pump 10 one side is equipped with check valve 11, just check valve 11 is located inside the back flow 8.

Through the above technical scheme of the utility model, through setting up the transmission pump 3, thereby reach the pipeline import 2 input, the purpose of second pipeline 6 output, make liquid medium get into first pipeline 1 through pipeline import 2 after, under the effect of transmission pump 3, get into second pipeline 6, at this moment liquid medium gets into after pressure sensor 18 detects pressure when second pipeline 6, pressure sensor 18 with pressure signal transmission to PLC controller 5 in, at this moment according to the pressure size in second pipeline 6, decide whether pipeline motorised valve 9 and backwash pump 10 are electrified, when the too big rear pipeline that influences of pressure in second pipeline 6, PLC controller 5 makes pipeline motorised valve 9 and backwash pump 10 simultaneously electrified, thereby make pipeline motorised valve 9 open the valve, make liquid medium flow to inside the back flow pipe 8, under the effect that backwash pump 10 is electrified to operate, first pipeline 1 with a part of liquid medium at the return, thereby reducing the pressure in the second pipeline 6 and preventing the liquid medium from flowing backwards through the one-way valve 11.

Example two:

referring to fig. 1-3, two ends of the first pipeline 1 and the second pipeline 6 are both provided with a connecting flange 12, the first pipeline 1 is flange-connected with the second pipeline 6, a stop valve 13 is arranged inside the first pipeline 1, the second pipeline 6 is provided with a pressure gauge 14, one end of the pressure gauge 14 is located inside the second pipeline 6, one side of the pressure gauge 14 is provided with a vent pipe 15, the vent pipe 15 is communicated with the second pipeline 6, a vent valve 16 is arranged inside the vent pipe 15, and a vent flange 17 is arranged on the vent pipe 15.

Through the above technical scheme of the utility model, through setting up flange 12, thereby reach first pipeline 1 with the purpose that second pipeline 6 is connected, through setting up stop valve 13, thereby reach when needs, can prevent that liquid medium from not getting into first pipeline 1, through setting up manometer 14, thereby make operating personnel, the pressure of clear observation pipeline, through setting up blow-down pipe 15, thereby reach the purpose that can empty down liquid medium after opening blow-down valve 16, through blow-down flange 17, thereby make blow-down pipe 15 can be connected with other pipelines.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, by arranging the transmission pump 3, the purpose of inputting the pipeline inlet 2 and outputting the second pipeline 6 is achieved, after the liquid medium enters the first pipeline 1 through the pipeline inlet 2, the liquid medium enters the second pipeline 6 under the action of the transmission pump 3, when the liquid medium enters the second pipeline 6, the pressure sensor 18 detects pressure through the pressure sensor 18, the pressure sensor 18 transmits a pressure signal into the PLC controller 5, at the moment, whether the pipeline electric valve 9 and the reflux pump 10 are powered or not is determined according to the pressure in the second pipeline 6, when the pressure in the second pipeline 6 is too large to influence the rear pipeline, the PLC controller 5 enables the pipeline electric valve 9 and the reflux pump 10 to be powered simultaneously, so that the pipeline electric valve 9 can open the valve, the liquid medium flows into the reflux pipe 8, under the action of the power-on operation of the reflux pump 10, a part of the liquid medium is in the returned first pipeline 1, thereby reach the pressure that reduces in the second pipeline 6, make check valve 11, reach the purpose that prevents the liquid medium adverse current, through setting up flange 12, thereby reach first pipeline 1 with the purpose that second pipeline 6 is connected, through setting up stop valve 13, thereby reach when needs, can prevent that the liquid medium from not getting into first pipeline 1, through setting up manometer 14, thereby make operating personnel, clear observation pipeline's pressure, through setting up blow-down pipe 15, thereby reach the purpose that can empty the liquid medium after opening blow-down valve 16, through blow-down flange 17, thereby make blow-down pipe 15 can be connected with other pipelines.

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

1. The pipeline pressure detection device with the closed-loop feedback function comprises a first pipeline (1) and is characterized in that a pipeline inlet (2) is arranged on one side of the first pipeline (1), a transmission pump (3) is arranged on one side of the pipeline inlet (2), the pipeline inlet (2) is located at the input end of the transmission pump (3), the transmission pump (3) is electrically connected with an external power supply, a controller mounting frame (4) is arranged on one side of the transmission pump (3), the controller mounting frame (4) is connected with the first pipeline (1), a PLC (programmable logic controller) controller (5) is arranged inside the controller mounting frame (4), the PLC (5) is electrically connected with the external power supply, a second pipeline (6) is arranged on one side of the first pipeline (1), the second pipeline (6) is communicated with the first pipeline (1), a pipeline outlet (7) is arranged on one side of the second pipeline (6), the pipeline outlet (7) is positioned at the output end of the transmission pump (3), a pressure sensor (18) is arranged in the second pipeline (6), the pressure sensor (18) is electrically connected with the PLC (5), a return pipe (8) is arranged below the second pipeline (6), one end of the return pipe (8) is communicated with the second pipeline (6), and the other end of the return pipe (8) is communicated with the first pipeline (1), a pipeline electric valve (9) is arranged in the return pipe (8), the pipeline electric valve (9) is electrically connected with the PLC (5), a reflux pump (10) is arranged on one side of the pipeline electric valve (9), the reflux pump (10) is electrically connected with the PLC (5), one side of the reflux pump (10) is provided with a one-way valve (11), and the one-way valve (11) is positioned inside the reflux pipe (8).

2. The pipeline pressure detection device with the closed-loop feedback function according to claim 1, wherein the first pipeline (1) and the second pipeline (6) are provided with connecting flanges (12) at two ends, and the first pipeline (1) is connected with the second pipeline (6) in a flange mode.

3. The pipeline pressure detection device with the closed-loop feedback function according to claim 2, characterized in that a stop valve (13) is arranged inside the first pipeline (1).

4. The pipeline pressure detection device with the closed-loop feedback function according to claim 1, wherein a pressure gauge (14) is arranged on the second pipeline (6), and one end of the pressure gauge (14) is located inside the second pipeline (6).

5. The pipeline pressure detecting device with the closed-loop feedback function according to claim 4, wherein a vent pipe (15) is arranged on one side of the pressure gauge (14), the vent pipe (15) is communicated with the second pipeline (6), and a vent valve (16) is arranged inside the vent pipe (15).

6. The pipeline pressure detecting device with the closed-loop feedback function according to claim 5, characterized in that a vent flange (17) is arranged on the vent pipe (15).