CN219039623U

CN219039623U - Fine chemical workshop remote zero-storage accurate feeding system

Info

Publication number: CN219039623U
Application number: CN202320015084.0U
Authority: CN
Inventors: 王禹谋; 胡俊; 孔敏; 杨森
Original assignee: Zhejiang Titan Design & Engineering Co ltd
Current assignee: Zhejiang Titan Design & Engineering Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-05-16
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses a remote zero-storage accurate feeding system for a fine chemical workshop, which comprises a tank field storage tank, a tank field delivery pump, a workshop peristaltic pump and a workshop reaction kettle, wherein the tank field storage tank is connected with the tank field delivery pump through a main pipeline I, an outlet of the tank field delivery pump is divided into two branches, and one branch is: the tank field delivery pump is connected with the workshop peristaltic pump through a workshop delivery pipeline, and the workshop peristaltic pump is connected with the workshop reaction kettle through a main pipeline II; including the DCS system, be equipped with the first ooff valve of tank field on the trunk line one, be equipped with tank field second ooff valve on the workshop pipeline one, be equipped with workshop flowmeter and workshop ooff valve on the trunk line two, tank field first ooff valve, tank field delivery pump tank field second ooff valve, workshop flowmeter and workshop ooff valve all with DCS system electric connection, carry out centralized control to many valves, cooperation DCS system realizes programmed control, degree of automation is high, the utilization ratio of workshop area and the production efficiency in workshop have been improved, the charge amount is more easily held.

Description

Fine chemical workshop remote zero-storage accurate feeding system

Technical Field

The utility model relates to the field of fine chemical engineering and industrial control, in particular to a remote zero-storage accurate feeding system for a fine chemical engineering workshop.

Background

In the production process of general fine chemical enterprises, the liquid material dripping process is generally involved, but along with the implementation of the fine chemical enterprise engineering design fireproof standard, the fine chemical enterprise workshop tank storage groups can only be arranged at the edge of a production facility, and larger intervals are required to be reserved, so that the factory arrangement and the production workshop area utilization rate are not high.

At present, enterprises often adopt equipment such as elevated tanks, middle tanks and the like which are closely connected with production facilities to avoid setting workshop storage tank groups, and the material dripping speed is controlled by a metering pump or a flowmeter in a linkage manner, so that dangerous chemicals can be stored in workshops for a long time, the diffusion of flammable and toxic gases and the suppression of fire are not facilitated, and the risks in workshops are increased.

Disclosure of Invention

In view of the problems existing in the prior art, the utility model aims to provide a remote zero-storage accurate feeding system for a fine chemical workshop, which can automatically finish accurate dripping of materials and has high automation degree.

The technical scheme of the utility model is as follows:

the utility model provides a long-range zero accurate charging system of storing in fine chemical industry workshop, includes tank field storage tank, tank field delivery pump, workshop peristaltic pump, workshop reation kettle and DCS control system, tank field storage tank is connected through trunk line one with tank field delivery pump, the export of tank field delivery pump divide into two branch roads, and a branch road is: the tank field delivery pump is connected with the workshop peristaltic pump through a workshop delivery pipeline, and the workshop peristaltic pump is connected with the workshop reaction kettle through a main pipeline II; the first tank area switch valve, the second tank area switch valve, the workshop flowmeter and the first workshop switch valve are all electrically connected with the DCS control system.

Further, the other branch of the tank field delivery pump outlet is: the outlet of the tank farm delivery pump is connected with the inlet of the tank farm storage tank through a tank farm return pipeline.

Further, a tank farm pneumatic regulating valve and a tank farm flowmeter are arranged on the tank farm reflux pipeline.

Further, the tank farm pneumatic adjusting valve and the tank farm flowmeter are electrically connected with the DCS control system.

Further, a workshop second switch valve is further arranged on the workshop conveying pipeline I, and the workshop second switch valve is electrically connected with the DCS control system.

Further, the first switching valve of the tank field, the pneumatic adjusting valve of the tank field, the second switching valve of the tank field, the first switching valve of the workshop and the second switching valve of the workshop are all pneumatic valves.

Further, the remote liquid level meter is arranged in the tank of the tank farm.

Further, the remote-transmission highest liquid level tuning fork is included, and the remote-transmission highest liquid level tuning fork is arranged in a workshop reaction kettle.

Compared with the prior art, the utility model has the beneficial effects that:

1) The DCS control system is used for controlling the tank field valve, the workshop valve and the tank field flowmeter and the workshop flowmeter in a centralized manner, so that the programmed control is realized, the automation degree is high, the feeding amount is easier to grasp, and the problem of flash cannot occur;

2) Compared with the traditional method for arranging the elevated tank and the middle tank, the utility model effectively improves the utilization rate of the workshop area and improves the production safety of the workshop.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the utility model.

In the figure: 1. a tank farm storage tank; 2. a tank field first switching valve; 3. a tank farm transfer pump; 4. a tank farm pneumatic control valve; 5. a tank farm flowmeter; 6. a tank field second switching valve; 7-1-N, peristaltic pumps in workshops; 8-1 to N, workshop flowmeter; 9-1-N, a workshop first switch valve; 10-1 to N, a reaction kettle; 11. a DCS control system; 12-1 to N, and a workshop second switch valve.

Detailed Description

The utility model will be further described with reference to the accompanying drawings, but the scope of protection of the utility model is not limited to the described scope.

As shown in FIG. 1, a remote zero-storage accurate feeding system for a fine chemical workshop comprises a tank farm storage tank 1, a tank farm delivery pump 3, workshop peristaltic pumps 7-1-N, workshop reaction kettles 10-1-N and a DCS control system 11, wherein the tank farm storage tank 1 is connected with the tank farm delivery pump 3 through a main pipeline I, a tank farm first switch valve 2 is arranged on the main pipeline I, the tank farm first switch valve 2 is electrically connected with the DCS control system 11, an outlet of the tank farm delivery pump 3 is divided into two branches, and one branch is: the outlet of the tank field conveying pump 3 is connected with workshop peristaltic pumps 7-1-N through workshop conveying pipelines; the other branch is: the tank farm conveying pump 3 is connected with an inlet of the tank farm storage tank 1 through a tank farm backflow pipeline, and the workshop peristaltic pumps 7-1-N are connected with the workshop reaction kettles 10-1-N through a main pipeline II.

According to the remote zero-storage accurate feeding system for the fine chemical industry workshop, a tank area second switch valve 6 and workshop second switch valves 12-1-N are arranged on a workshop conveying pipeline and are electrically connected with a DCS control system 11; the tank farm reflux pipeline is provided with a tank farm pneumatic regulating valve 4 and a tank farm flowmeter 5, wherein the tank farm pneumatic regulating valve 4 and the tank farm flowmeter 5 are electrically connected with a DCS control system 11, and the DSC control system 11 realizes the functions of tank farm automation, post automation, manual control, alarm recording, alarm setting, data statistics and the like in the feeding process, and the DCS control system 11 is the prior art and is not described in detail herein.

According to the remote zero-storage accurate feeding system for the fine chemical industry workshop, the workshop flowmeter 8-1-N and the workshop switch valve 9-1-N are arranged on the main pipeline II, and the workshop flowmeter 8-1-N and the workshop switch valve 9-1-N are electrically connected with the DCS control system 11.

The tank farm flowmeter 5 and the workshop flowmeter 8-1-N are transmitted to the DCS control system 11, and the DCS control system 11 is electrically connected with the tank farm conveying pump 3, the workshop peristaltic pump 7-1-N, the workshop switching valve 9-1-N, the tank farm first switching valve 2, the tank farm pneumatic regulating valve 4, the tank farm second switching valve 6 and the workshop second switching valve 12-1-N, so that the DCS control system 11 can regulate and control the opening, the closing and the opening of the tank farm conveying pump 3 and the workshop peristaltic pump 7-1-N according to the flow and the input dripping requirement.

The tank field storage tank 1 is provided with a remote liquid level meter for measuring liquid level, and the liquid level of the liquid material in the tank field storage tank 1 can be measured. When the material amount in the tank area storage tank 1 is insufficient, a signal can be transmitted to the DCS control system 11 to stop the transportation of the material in the tank area; be equipped with the local level gauge of being convenient for observe on the jar body of tank field storage tank 1, operating personnel can be convenient for in time make the adjustment through the internal liquid condition of local level gauge observation jar when patrolling and examining.

The workshop reaction kettles 10-1-N can be further internally provided with a remote transmission highest liquid level tuning fork, so that the addition of feed liquid can be stopped when the workshop reaction kettles 10-1-N are filled with materials.

The working principle is as follows:

the charging system of each process post in the utility model is a single project, and finally, the charging system project of each post is integrated into the DCS control system 11, so that a connection is established among a plurality of monomers.

The utility model relates to a workshop remote accurate feeding system controlled by a DCS control system 11, which mainly realizes data monitoring, feedback and control on field devices of a tank farm and a workshop. And automation of the feeding process and visualization of feeding data are realized.

The drawing shows a basic process flow diagram of the utility model, and the flow is described as follows:

1) The initial stage: firstly, a control room inputs the feeding amount and feeding speed data of materials in the control room according to workshop production requirements; after the input data are transmitted to the DCS control system 11, judging whether other process posts are carrying out material conveying, if so, prompting that other posts are carrying out material conveying, and if so, carrying out material conveying at the same time, wherein the steps are slightly waiting; judging whether the liquid level reserve of the tank area storage tank 1 meets the requirement of the current material conveying, if the reserve does not meet the requirement, prompting that the storage tank is insufficient in material reserve and cannot convey materials, if the storage tank is slightly equal, and if the storage tank is capable of conveying materials, carrying out the subsequent steps;

2) And (3) material reflux quantity adjustment: preliminarily adjusting the opening of the pneumatic adjusting valve 4 of the tank area according to the input feeding amount so as to control the flow of the materials to the workshop;

3) And (3) conveying: the system automatically opens a first switching valve 2 of a tank farm, a tank farm conveying pump 3, a second switching valve 6 of the tank farm, adjusts the opening degree of a pneumatic tank farm adjusting valve 4 according to the input feeding speed through flow data of a tank farm flowmeter 5, then opens a peristaltic pump 7-1-N of a workshop according to a storage tank needing feeding, opens a first switching valve 9-1-N of the workshop, and a second switching valve 12-1-N of the workshop, and adjusts the conveying flow of the peristaltic pump 7-1-N of the workshop again through the flow of the workshop flowmeter 8-1-N so as to meet the feeding rate requirement of the process;

4) Pause the beating stage: when the conveying quantity of the workshop flowmeter 8-1-N reaches an input numerical value, cutting off a first switching valve 9-1-N of the workshop, closing a peristaltic pump 7-1-N of the workshop, and determining to close a first switching valve 2 of the tank area, a conveying pump 3 of the tank area, a pneumatic control valve 4 of the tank area and a second switching valve 6 of the tank area after feeding is finished;

according to the utility model, the liquid level of the reaction kettles 10-1-N is transmitted to the DCS control system 11 through a communication line, and if the DCS control system 11 collects that the liquid level data of the reaction kettles 10-1-N is larger than the cut-off value of the reaction kettles 10-1-N, the DCS control system 11 forcibly stops the material feeding operation.

Claims

1. The utility model provides a long-range accurate charging system of zero storage in fine chemical industry workshop, its characterized in that includes tank field storage tank (1), tank field delivery pump (3), workshop peristaltic pump (7-1 ~ N), workshop reation kettle (10-1 ~ N) and DCS control system (11), tank field storage tank (1) are connected through trunk line one with tank field delivery pump (3), the export of tank field delivery pump (3) divide into two branches, and a branch is: the tank farm conveying pump (3) is connected with the workshop peristaltic pump (7-1-N) through a workshop conveying pipeline, and the workshop peristaltic pump (7-1-N) is connected with the workshop reaction kettle (10-1-N) through a main pipeline II; be equipped with tank field first ooff valve (2) on the trunk line, be equipped with tank field second ooff valve (6) on the workshop pipeline one, be equipped with workshop flowmeter (8-1 ~ N) and workshop first ooff valve (9-1 ~ N) on the trunk line two, tank field first ooff valve (2), tank field delivery pump (3) tank field second ooff valve (6), workshop flowmeter (8-1 ~ N) and workshop first ooff valve (9-1 ~ N) all with DCS control system (11) electric connection.

2. The fine chemical plant remote zero-storage accurate feeding system according to claim 1, characterized in that the other branch of the tank farm delivery pump (3) outlet is: the outlet of the tank field delivery pump (3) is connected with the inlet of the tank field storage tank (1) through a tank field return pipeline.

3. The remote zero-storage accurate feeding system for the fine chemical workshops is characterized in that a tank farm pneumatic adjusting valve (4) and a tank farm flowmeter (5) are arranged on the tank farm return pipeline.

4. A fine chemical plant remote zero-storage accurate feeding system according to claim 3, characterized in that the tank farm pneumatic control valve (4) and the tank farm flowmeter (5) are electrically connected with the DCS control system (11).

5. The precise feeding system for remote zero storage of a fine chemical workshop according to claim 4, wherein a workshop second switch valve (12-1-N) is further arranged on the workshop conveying pipeline I, and the workshop second switch valve (12-1-N) is electrically connected with a DCS control system (11).

6. The fine chemical workshop remote zero-storage accurate feeding system is characterized in that the tank area first switching valve (2), the tank area pneumatic adjusting valve (4), the tank area second switching valve (6), the workshop first switching valve (9-1-N) and the workshop second switching valve (12-1-N) are all pneumatic valves.

7. The remote zero-storage accurate feeding system for the fine chemical workshops according to claim 6 is characterized by comprising a remote liquid level meter, wherein the remote liquid level meter is arranged in a tank (1) of a tank farm.

8. The remote zero-storage accurate feeding system for the fine chemical workshops is characterized by comprising a remote-transmission highest liquid level tuning fork, and the remote-transmission highest liquid level tuning fork is arranged in a workshop reaction kettle (10-1-N).