CN104216429A - Liquid level control system for EG (ethylene glycol) esterification tank - Google Patents
Liquid level control system for EG (ethylene glycol) esterification tank Download PDFInfo
- Publication number
- CN104216429A CN104216429A CN201310208768.3A CN201310208768A CN104216429A CN 104216429 A CN104216429 A CN 104216429A CN 201310208768 A CN201310208768 A CN 201310208768A CN 104216429 A CN104216429 A CN 104216429A
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- China
- Prior art keywords
- tank
- liquid level
- esterification
- control system
- level control
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Abstract
The invention relates to a liquid level control system for an EG (ethylene glycol) esterification tank. The liquid level control system for the EG esterification tank comprises the EG esterification tank (1), and a discharging port of the EG esterification tank (1) is connected with a feeding pipeline (2) supplying materials to a slurry mixing tank. The liquid level control system is characterized in that a pump (2.1), a flow transmitter (2.2) and a feeding valve (2.3) are arranged on the feeding pipeline (2) sequentially from front to back, a liquid level sensor (1.3) is arranged in the EG esterification tank (1), a control circuit (3) is arranged between the liquid level sensor (1.3) and the feeding valve (2.3), a liquid level controller (3.1), a switch controller (3.2) and a flow controller (3.3) are arranged on the control circuit (3) sequentially from front to back, and a circuit is connected between the flow transmitter (2.2) and the flow controller (3.3). The liquid level control system for the EG esterification tank has the advantages of high precision in liquid level control and manpower saving.
Description
Technical field
The present invention relates to a kind of esterification EG tank, particularly relate to a kind of esterification EG tank tank level control system, belong to field of chemical equipment.
Background technology
In production PET Process, need adding EG(ethylene glycol in slurry mix tank), the more difficult control of liquid level in traditional esterification EG tank, needs the speed regulating esterification EG tank to feed in slurry mix tank manually.For maximization production line, if need workman's manual operation, waste a large amount of artificial, and the more difficult assurance of esterification EG tank Liquid level precision.Therefore seek a kind of Liquid level precision higher, save artificial esterification EG tank tank level control system particularly important.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide a kind of Liquid level precision higher, save artificial esterification EG tank tank level control system.
The object of the present invention is achieved like this:
A kind of esterification EG tank tank level control system, comprise esterification EG tank, the discharging opening of described esterification EG tank is connected with the feeding pipeline to slurry mix tank feed, described feeding pipeline is disposed with pump, flow transmitter and inlet valve from front to back, liquid level sensor is provided with in described esterification EG tank, operation circuit is provided with between described liquid level sensor and inlet valve, described operation circuit is provided with fluid level controller, on-off controller and flow controller from front to back, between described flow transmitter and flow controller, is also connected with circuit.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention controls the aperture of inlet valve by the signal of operation circuit, thus controls the feeding speed of esterification EG tank to slurry mix tank, ensures that esterification EG tank liquid level is able to accurate control.It is higher that this esterification EG tank tank level control system has Liquid level precision, saves artificial advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of esterification EG tank tank level control system of the present invention.
Wherein:
Esterification EG tank 1, paddle 1.1, motor 1.2, liquid level sensor 1.3
Feeding pipeline 2, pump 2.1, flow transmitter 2.2, inlet valve 2.3
Operation circuit 3, fluid level controller 3.1, on-off controller 3.2, flow controller 3.3.
Embodiment
See Fig. 1, a kind of esterification EG tank tank level control system that the present invention relates to, comprise esterification EG tank 1, the discharging opening of described esterification EG tank 1 is connected with the feeding pipeline 2 to slurry mix tank feed, paddle 1.1 is provided with in described esterification EG tank 1, described paddle 1.1 is driven by the motor 1.2 at esterification EG tank 1 top, described feeding pipeline 2 is disposed with pump 2.1 from front to back, flow transmitter 2.2 and inlet valve 2.3, described pump 2.1 has been arranged in parallel two, described flow transmitter 2.2 has been arranged in parallel two, liquid level sensor 1.3 is provided with in described esterification EG tank 1, described liquid level sensor 1.3 has been arranged in parallel two, operation circuit 3 is provided with between described liquid level sensor 1.3 and inlet valve 2.3, described operation circuit 3 is provided with fluid level controller 3.1 from front to back, on-off controller 3.2 and flow controller 3.3, also circuit is connected with between described flow transmitter 2.2 and flow controller 3.3.
Claims (1)
1. an esterification EG tank tank level control system, comprise esterification EG tank (1), the discharging opening of described esterification EG tank (1) is connected with the feeding pipeline (2) to slurry mix tank feed, it is characterized in that described feeding pipeline (2) is disposed with pump (2.1) from front to back, flow transmitter (2.2) and inlet valve (2.3), liquid level sensor (1.3) is provided with in described esterification EG tank (1), operation circuit (3) is provided with between described liquid level sensor (1.3) and inlet valve (2.3), described operation circuit (3) is provided with from front to back fluid level controller (3.1), on-off controller (3.2) and flow controller (3.3), also circuit is connected with between described flow transmitter (2.2) and flow controller (3.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208768.3A CN104216429A (en) | 2013-05-30 | 2013-05-30 | Liquid level control system for EG (ethylene glycol) esterification tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208768.3A CN104216429A (en) | 2013-05-30 | 2013-05-30 | Liquid level control system for EG (ethylene glycol) esterification tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104216429A true CN104216429A (en) | 2014-12-17 |
Family
ID=52098033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310208768.3A Pending CN104216429A (en) | 2013-05-30 | 2013-05-30 | Liquid level control system for EG (ethylene glycol) esterification tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104216429A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932561A (en) * | 2015-05-04 | 2015-09-23 | 中石化宁波工程有限公司 | Synthetic gas washing tower liquid level control system and control method thereof |
| CN110647180A (en) * | 2019-10-30 | 2020-01-03 | 三一石油智能装备有限公司 | Liquid level control method, device, equipment and storage medium |
-
2013
- 2013-05-30 CN CN201310208768.3A patent/CN104216429A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932561A (en) * | 2015-05-04 | 2015-09-23 | 中石化宁波工程有限公司 | Synthetic gas washing tower liquid level control system and control method thereof |
| CN110647180A (en) * | 2019-10-30 | 2020-01-03 | 三一石油智能装备有限公司 | Liquid level control method, device, equipment and storage medium |
| CN110647180B (en) * | 2019-10-30 | 2022-12-27 | 三一石油智能装备有限公司 | Liquid level control method, device, equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |