CN206398370U - A kind of anti-backflow feeding system - Google Patents
A kind of anti-backflow feeding system Download PDFInfo
- Publication number
- CN206398370U CN206398370U CN201621495730.4U CN201621495730U CN206398370U CN 206398370 U CN206398370 U CN 206398370U CN 201621495730 U CN201621495730 U CN 201621495730U CN 206398370 U CN206398370 U CN 206398370U
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- China
- Prior art keywords
- pressure difference
- feeder sleeve
- bypass pipe
- difference value
- valve
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Abstract
The utility model discloses a kind of anti-backflow feeding system, including feeder sleeve and bypass pipe, the discharge end of the feeder sleeve is sequentially provided with regulating valve and interlocked valve, described bypass pipe one end is connected on the feeder sleeve of regulating valve front end, the bypass pipe other end is connected on the feeder sleeve of interlocked valve rear end, the bypass pipe is provided with pressure difference value display instrument, the pressure difference value display instrument connection interlocking arithmetic unit, the pressure interlocking controller of the interlocking arithmetic unit connection interlocked valve and the flow indication of regulating valve control to adjust device.In the case that the utility model can solve caused by a variety of causes mass flow wretched insufficiency or cutout, mixed zone others materials are unable to anti-channeling to be occurred blocking or causes failure into the feeder sleeve unexpected solid matter of generation that reacts, prolonged turnaround of unit is caused, the problem of influenceing effective production efficiency.The utility model principle is simple and reliable, economically feasible, and stable operation is reliable, and repair and maintenance is also seldom.
Description
Technical field
The utility model is related to chemical technology field, particularly relates to a kind of anti-backflow feeding system.
Background technology
In chemical process, the pressure requirements of system are stable, and material could be well mixed, reacting balance, steady quality,
Due to the fluctuation of feeding system local pressure, material anti-channeling can be caused to trigger accident, material anti-channeling may trigger unexpected reaction, and
System jams, production process are caused quickly to be resumed production after being unable to continuous service or parking.
Traditional anti-backflow method is check-valves, and imprecision is closed under this high temperature, low pressure, gaseous condition, is still suffered from
A little gaseous state flows through, while normally-open under the conditions of this also have certain difficulty.When chemical process requires high, installation stops
Requirement can not be met by returning valve anti-backflow.
Utility model content
In view of this, technical problem to be solved in the utility model, exactly proposes a kind of anti-backflow feeding system.
In order to solve the above technical problems, the utility model is achieved using following technical scheme：
A kind of anti-backflow feeding system, including feeder sleeve and bypass pipe, the discharge end of the feeder sleeve are sequentially provided with regulation
Valve and interlocked valve, described bypass pipe one end are connected on the feeder sleeve of regulating valve front end, and the bypass pipe other end is connected to interlocked valve
On the feeder sleeve of rear end, the bypass pipe is provided with pressure difference value display instrument, the pressure difference value display instrument connection interlocking computing
Device, the pressure interlocking controller of the interlocking arithmetic unit connection interlocked valve and the flow indication of regulating valve control to adjust device, pressure
Interlocking controller is used for the switch that interlocked valve is controlled according to the pressure difference signal of pressure difference value display instrument, and flow indication controls to adjust device
For adjusting the mass flow in feeder sleeve according to process regulation regulating valve.
Preferably, the pressure interlocking controller is also associated with alarm.
Interlocking arithmetic unit of the present utility model is programmable control device, and such as PLC first sets safe pressure differential
Value, alarm pressure difference and interlocking pressure difference, and corresponding regulation, including alarm report are made according to the pressure difference value of change
It is alert, control of the control pressure interlocking controller to interlocked valve, and control of the control flow display control adjuster to regulating valve flow
System.
Preferably, it is designed with valve on the bypass pipe of the pressure difference value display instrument both sides.
Preferably, the safe pressure differential value of the pressure difference value display instrument is not less than 0.1MPa, pressure difference value display instrument
Alarm pressure difference be 0.05MPa-0.1MPa, the interlocking close pressure difference of pressure difference value display instrument is less than 0.05MPa.
Compared with prior art, the utility model have the advantage that for：The utility model can be solved because of a variety of causes
In the case of causing mass flow wretched insufficiency or cutout, mixed zone others material is unable to anti-channeling and reacted into feeder sleeve
Generate unexpected solid matter to occur to block or cause failure, cause prolonged turnaround of unit, influence effective production efficiency
The problem of.The utility model principle is simple and reliable, economically feasible, and stable operation is reliable, and repair and maintenance is also seldom.
Brief description of the drawings
Fig. 1 is the stereogram of the utility model preferred embodiment；
Embodiment
To allow those skilled in the art to become apparent from getting information about the utility model, below in conjunction with accompanying drawing, to this
Utility model is further described.
It is preferred embodiment of the present utility model as shown in Figure 1.
A kind of anti-backflow feeding system, including feeder sleeve 1 and bypass pipe 2, the discharge end of feeder sleeve 1 are sequentially provided with regulating valve
3 and interlocked valve 4, the one end of bypass pipe 2 is connected on the feeder sleeve 1 of the front end of regulating valve 3, and the other end of bypass pipe 2 is connected to interlocked valve 4
On the feeder sleeve 1 of rear end, bypass pipe 2 is provided with pressure difference value display instrument 5, and the connection of pressure difference value display instrument 5 interlocks arithmetic unit 6,
Interlock the pressure interlocking controller 7 of the connection interlocked valve 4 of arithmetic unit 6 and the flow indication of regulating valve 3 controls to adjust device 8, pressure connection
Lock controller 7 is used for the switch that interlocked valve 4 is controlled according to the pressure difference signal of pressure difference value display instrument 5, and flow indication is controlled to adjust
Device 8 is used to according to process regulation regulating valve 3 adjust the mass flow in feeder sleeve 1.The both sides of pressure difference value display instrument 5
Valve 9 is designed with bypass pipe 2.Pressure interlocking controller 7 is also associated with alarm (not shown).
Interlocking arithmetic unit 6 in the present embodiment is programmable control device, first set safe pressure differential value be not less than
0.1MPa, and corresponding regulation is made according to the change of pressure difference value, including pressure difference value reaches 0.05MPa-0.1MPa report
Alarm equipment alarm is controlled during alert pressure difference；Pressure difference value be less than 0.05MPa when interlocking pressure difference when, control pressure interlocked control
Device closes interlocked valve, makes the feed stopping of feeder sleeve 1；And device 8 is controlled to adjust to regulating valve 3 according to process regulation flow indication
The control of flow.
Its principle is to judge whether normal, pressure difference is less than one for material charging according to the pressure difference of pressure difference value display instrument 5
Definite value starts alarm, then closes interlocked valve less than limiting value regulating valve, prevents other Gaseous materials from entering feeder sleeve.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of anti-backflow feeding system, it is characterised in that including feeder sleeve and bypass pipe, the discharge end of the feeder sleeve is successively
Provided with regulating valve and interlocked valve, described bypass pipe one end is connected on the feeder sleeve of regulating valve front end, the connection of the bypass pipe other end
On the feeder sleeve of interlocked valve rear end, the bypass pipe is provided with pressure difference value display instrument, the pressure difference value display instrument connection
Arithmetic unit is interlocked, the pressure interlocking controller of the interlocking arithmetic unit connection interlocked valve and the flow indication of regulating valve are controlled to adjust
Device.
2. anti-backflow feeding system according to claim 1, it is characterised in that the pressure interlocking controller is also associated with
Alarm.
3. anti-backflow feeding system according to claim 1 or 2, it is characterised in that the pressure difference value display instrument both sides
Bypass pipe on be designed with valve.
4. anti-backflow feeding system according to claim 3, it is characterised in that the safety pressure of the pressure difference value display instrument
Difference is not less than 0.1MPa, and the alarm pressure difference of pressure difference value display instrument is 0.05MPa-0.1MPa, pressure difference value display instrument
Interlocking close pressure difference is less than 0.05MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621495730.4U CN206398370U (en) | 2016-12-29 | 2016-12-29 | A kind of anti-backflow feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621495730.4U CN206398370U (en) | 2016-12-29 | 2016-12-29 | A kind of anti-backflow feeding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206398370U true CN206398370U (en) | 2017-08-11 |
Family
ID=59516744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621495730.4U Active CN206398370U (en) | 2016-12-29 | 2016-12-29 | A kind of anti-backflow feeding system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206398370U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911811A (en) * | 2020-07-15 | 2020-11-10 | 安徽瑞赛克再生资源技术股份有限公司 | Synthetic compressor safety protection pipeline system and control method |
| CN112443757A (en) * | 2020-10-28 | 2021-03-05 | 中石化宁波工程有限公司 | System and method for preventing high-pressure channeling and low-pressure channeling of methanol device |
| CN109386738B (en) * | 2018-12-18 | 2023-11-14 | 中国石油天然气集团有限公司 | Pipe explosion monitoring alarm and interlocking protection device for valve chamber main pipeline of gas pipeline |
-
2016
- 2016-12-29 CN CN201621495730.4U patent/CN206398370U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386738B (en) * | 2018-12-18 | 2023-11-14 | 中国石油天然气集团有限公司 | Pipe explosion monitoring alarm and interlocking protection device for valve chamber main pipeline of gas pipeline |
| CN111911811A (en) * | 2020-07-15 | 2020-11-10 | 安徽瑞赛克再生资源技术股份有限公司 | Synthetic compressor safety protection pipeline system and control method |
| CN112443757A (en) * | 2020-10-28 | 2021-03-05 | 中石化宁波工程有限公司 | System and method for preventing high-pressure channeling and low-pressure channeling of methanol device |
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