CN204512955U - A kind of open circuit and closed circuit conveying switched system device - Google Patents
A kind of open circuit and closed circuit conveying switched system device Download PDFInfo
- Publication number
- CN204512955U CN204512955U CN201520087615.2U CN201520087615U CN204512955U CN 204512955 U CN204512955 U CN 204512955U CN 201520087615 U CN201520087615 U CN 201520087615U CN 204512955 U CN204512955 U CN 204512955U
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- electric valves
- electric
- transfer pump
- closed circuit
- slurry
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Abstract
The open a kind of open circuit of the utility model and closed circuit conveying switched system device, for the switching of open circuit and closed circuit mode of movement in long distance coal slurry course of conveying.This system and device adopts pipeline to connect in certain sequence primarily of higher level's transfer pump, transfer pump at the corresponding levels, bypass buffer cell, electric valve, a pressure transmitter, bypass buffer cell and an electric valve are installed in parallel, bypass buffer cell is made up of No. two electric valves, No. three electric valves, orifice plate, slurry can, No. four electric valves, No. two electric valves, No. three electric valves, slurry can, No. four electric valves adopt pipeline to connect successively, and orifice plate and No. three electric valves are installed in parallel.By orifice plate buffering adjust flux and pressure, electric valve open and close automatically and the timely feedback pressure of pressure transmitter, achieve open circuit and closed circuit conveying mutually switch, reduce Dynamic System difficulty and risk, and without the need to technician's execute-in-place, structure simply, safely, reliably.
Description
Technical field
The utility model relates to a kind of open circuit and closed circuit conveying switched system device, can be widely used in, in long distance multi stage pumping station pipe-line transportation system, belonging to coal slurry pipeline process technology equipment field.
Background technique
Long-distance transportation through pipeline coal slurry engineering in general freight volume is large, haul distance is long, usually adopts the method for operation of multi stage pumping station intermediate haulage.The switching realizing open circuit and closed circuit mode of movement is needed in relay course of conveying.Open circuit conveying refers to that coal slurry is first delivered to slurry can and cushions by higher level's transfer pump, and then coal slurry enters transfer pump at the corresponding levels from slurry can outlet gravity flow, and then is delivered to subordinate's transfer pump; Closed circuit conveying then refers to and coal slurry is directly delivered to transfer pump at the corresponding levels by upstream, and centre does not enter slurry can buffering.Closed circuit conveying requires that the feed flow of the coal amount flow of higher level's transfer pump and transfer pump at the corresponding levels coincide, can not excessive can not be too small.But in Practical Project, this requirement can not be completely satisfied under some special operation conditions, such as, in transfer pump at the corresponding levels progressively start-up course, upstream conveying coal slurry amount is often greater than the feed flow of transfer pump at the corresponding levels, now adopts closed circuit conveying to have greater risk.But in whole long-distance transportation through pipeline system normal course of operation, this requirement that the feed flow that can meet the coal amount flow of higher level's transfer pump and transfer pump at the corresponding levels completely coincide, adopt the efficiency of closed circuit conveying higher than the efficiency of open circuit conveying, therefore, be more suitable for closed circuit conveying.
At present, the method that slurry pipeline multi stage pumping station switches online utilizes the switch control rule pressure of valve finally to realize the switching of the method for operation often through site operation personnel.As " the online switching method of a kind of high-pressure long-distance slurry pipeline transmission multi-stage pump station " of application in " Yunnan Dahongshan Pipeline Co., Ltd. " on June 23rd, 2009, application number is 200910148154.4.This patent needs Field Force to judge that main pipeline valve and by-pass valve open and close opportunity according to pressure changing when switching, operation easier is large, and risk is high, this patent unexposed orifice plate regulative mode.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of open circuit and closed circuit conveying switched system device, this system and device is by orifice plate buffering adjust flux and pressure, electric valve open and close automatically and the timely feedback pressure of pressure transmitter, realization open circuit and closed circuit conveying switch mutually, reduce Dynamic System difficulty, and without the need to technician's execute-in-place, structure simply, safely, reliably.
The technical scheme in the invention for solving the above technical problem is: a kind of open circuit and closed circuit conveying switched system device are primarily of higher level's transfer pump, transfer pump at the corresponding levels, bypass buffer cell, an electric valve, pressure transmitter adopts pipeline to connect in certain sequence, pipeline between described higher level's transfer pump and described transfer pump at the corresponding levels is provided with a described electric valve, described bypass buffer cell and a described electric valve are installed in parallel, described pressure transmitter is arranged on the pipeline between described higher level's transfer pump and a described electric valve, described bypass buffer cell is by No. two electric valves, No. three electric valves, orifice plate, slurry can, No. four electric valve compositions, described No. two electric valves, described No. three electric valves, described slurry can, described No. four electric valves adopt pipeline to connect successively, described orifice plate and described No. three electric valves are installed in parallel.
From open circuit to closed circuit conveying handoff procedure, when the pressure of described pressure transmitter reaches switching condition requirement, first close described No. three electric valves, then open a described electric valve, close described No. two electric valves again, finally close described No. four electric valves.At described No. three electric valves of closedown with during opening a described electric valve, coal slurry can enter described slurry can by described orifice plate, and described orifice plate serves the effect of shunting and steady pressure, to avoid in handoff procedure pressure surge on the impact of system.
From closed circuit to open circuit conveying handoff procedure, when the pressure of described pressure transmitter reaches switching condition requirement, first open described No. four electric valves, then, open No. three electric valves, open described No. two electric valves again, finally close a described electric valve.During the described electric valve of closedown, described orifice plate serves the effect of shunting and steady pressure, and in handoff procedure, pressure surge is on the impact of system.
On the one hand, described valve is electric valve, the pressure of described pressure transmitter also can remote transmission to control centre, therefore whole handoff procedure can realize long-range complete operation; On the other hand, owing to having set up described orifice plate adjust flux and pressure, the flow that can produce to the unlatching of described No. two electric valves of an electric valve described on main pipeline and bypass buffer cell or when closing and the effective stabilization of pressure, therefore without the need to technician's execute-in-place in open circuit and closed circuit transport handoff procedure, reliable and stable.
The beneficial effect of this open circuit and closed circuit conveying switched system device: by orifice plate buffering adjust flux and steady pressure, electric valve open and close automatically and the timely feedback pressure of pressure transmitter, achieve open circuit and closed circuit conveying mutually switch, reduce Dynamic System difficulty and risk, and without the need to technician's execute-in-place, structure simply, safely, reliably.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is the structural representation of the utility model open circuit and closed circuit conveying switched system device.
Above-mentioned number in the figure is described as follows:
1, higher level's transfer pump 2, transfer pump at the corresponding levels 3, bypass buffer cell 4, pressure transmitter
5, an electric valve 6, No. two electric valves 7, No. three electric valves 8, orifice plates
9, slurry can 10, No. four electric valves
Embodiment
In FIG, the one open circuit that the utility model provides and closed circuit conveying switched system device are primarily of higher level's transfer pump (1), transfer pump (2) at the corresponding levels, bypass buffer cell (3), pressure transmitter (4), an electric valve (5) adopts pipeline to connect in certain sequence, pipeline between described higher level's transfer pump (1) and described transfer pump at the corresponding levels (2) is provided with a described electric valve (5), described bypass buffer cell (3) and a described electric valve (5) are installed in parallel, described pressure transmitter (4) is arranged on the pipeline between described higher level's transfer pump (1) and a described electric valve (5), described bypass buffer cell (3) is by No. two electric valves (6), No. three electric valves (7), orifice plate (8), slurry can (9), No. four electric valve (10) compositions, described No. two electric valves (6), described No. three electric valves (7), described slurry can (9), described No. four electric valves (10) adopt pipeline to connect successively, described orifice plate (8) and No. three electric valves (7) are installed in parallel.
Claims (1)
1. an open circuit and closed circuit conveying switched system device, primarily of higher level's transfer pump, transfer pump at the corresponding levels, bypass buffer cell, an electric valve, pressure transmitter adopts pipeline to connect in certain sequence, pipeline between described higher level's transfer pump and described transfer pump at the corresponding levels is provided with a described electric valve, described bypass buffer cell and a described electric valve are installed in parallel, described pressure transmitter is arranged on the pipeline between described higher level's transfer pump and a described electric valve, described bypass buffer cell is by No. two electric valves, No. three electric valves, orifice plate, slurry can, No. four electric valve compositions, described No. two electric valves, described No. three electric valves, described slurry can, described No. four electric valves adopt pipeline to connect successively, it is characterized in that: described orifice plate and described No. three electric valves are installed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087615.2U CN204512955U (en) | 2015-02-09 | 2015-02-09 | A kind of open circuit and closed circuit conveying switched system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087615.2U CN204512955U (en) | 2015-02-09 | 2015-02-09 | A kind of open circuit and closed circuit conveying switched system device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204512955U true CN204512955U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520087615.2U Expired - Fee Related CN204512955U (en) | 2015-02-09 | 2015-02-09 | A kind of open circuit and closed circuit conveying switched system device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204512955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137686A (en) * | 2019-12-31 | 2020-05-12 | 陕西神渭煤炭管道运输有限责任公司 | Pipeline coal conveying system interstation open-circuit starting and switching closed-circuit control system and method |
| CN111550677A (en) * | 2020-05-11 | 2020-08-18 | 陕西神渭煤炭管道运输有限责任公司 | Multistage pump station series-parallel connection slurry beating body conveying system and method |
-
2015
- 2015-02-09 CN CN201520087615.2U patent/CN204512955U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137686A (en) * | 2019-12-31 | 2020-05-12 | 陕西神渭煤炭管道运输有限责任公司 | Pipeline coal conveying system interstation open-circuit starting and switching closed-circuit control system and method |
| CN111550677A (en) * | 2020-05-11 | 2020-08-18 | 陕西神渭煤炭管道运输有限责任公司 | Multistage pump station series-parallel connection slurry beating body conveying system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20170209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |