CN104019360A - Self-control type efficient energy-saving heat tracing system - Google Patents
Self-control type efficient energy-saving heat tracing system Download PDFInfo
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- CN104019360A CN104019360A CN201310066458.2A CN201310066458A CN104019360A CN 104019360 A CN104019360 A CN 104019360A CN 201310066458 A CN201310066458 A CN 201310066458A CN 104019360 A CN104019360 A CN 104019360A
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- 238000010926 purge Methods 0.000 claims abstract description 229
- 238000003860 storage Methods 0.000 claims abstract description 50
- 238000007670 refining Methods 0.000 claims abstract description 48
- 230000008676 import Effects 0.000 claims description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 13
- 238000010408 sweeping Methods 0.000 claims description 6
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005504 petroleum refining Methods 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract 4
- 239000000126 substance Substances 0.000 abstract 3
- 239000003921 oil Substances 0.000 description 49
- 239000002609 medium Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 9
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- 239000000700 radioactive tracer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 210000002468 fat body Anatomy 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Abstract
The invention discloses a self-control type high-efficiency energy-saving heat tracing system, and belongs to the fields of petroleum refining, petrochemical industry and petroleum storage and transportation. The heat tracing system takes steam as a heat tracing medium, a control system is arranged in the steam heat tracing system and comprises a steam heat tracing system and a purging air system, and the control unit is used for forming interlocking between the operation state of the oil refining chemical device or the petroleum storage and transportation system and the steam heat tracing system and forming follow-up with the operation/shutdown state of the oil refining chemical device or the petroleum storage and transportation system. The existing uninterrupted feeding type steam tracing is improved into automatic control intermittent supply type steam tracing, the system runs well, the intelligent control of the running state of an oil refining chemical device or a petroleum storage and transportation system on a steam tracing system is realized, steam is used reasonably and intermittently, the temperature of a medium is guaranteed to be lower than that of the tracing steam, and the energy waste and the water resource consumption are effectively reduced.
Description
Technical field
The present invention relates to petroleum refining, petrochemical industry and oil movement and storage field, particularly the energy-efficient tracing system of a kind of self-controlled type.
Background technique
The medium that some easily condenses in production practices, as crude oil, heavy oil etc., in Pipeline transport process, because temperature reduces gradually, viscosity increases gradually, even can solidify impact and produce.Therefore in the time carrying this class medium, must take Insulation, as added the adjoining pipes such as steam near this material pipe, to maintain the certain temperature of material.Steam tube or hot-water line and oil pipe are wrapped in and in same heat-preservating shell, are called companion's heat.
In cold area or have in the device of high condensation point oil product or other fluid foods, conventionally in the pipeline after insulation, bury steamtraced piping underground, pass into the steam of 0.3MPa～1.0MPa, steam is in petroleum refining and chemical process, to be widely used in fluid circulating tube road to accompany hot medium, condensation point in order to holding tube channel temp higher than medium in pipe, the mobility of guarantee medium.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
In the prior art, tracing steam mostly derives from steam boiler or refining and petrochemical processing units or oil movement and storage system and self has the steam occurring by the drum that steams after suitable potential temperature material.Except inspecting state, under normal circumstances, the tracing steam of refining and petrochemical processing units or oil movement and storage system just no longer interrupts once coming into operation, and finally after STEAM TRAP, enters factory's sewerage with water of condensation form.But in normal productive process, the interior medium temperature of material pipe that the overwhelming majority buries steam tracing pipeline underground is all unlikely to lose flowability far above its condensation point, as reduced crude, decompression residuum, decompressed wax oil etc.; Medium temperature in part refining and petrochemical processing units or oil movement and storage system pipeline or pipeline section is even higher than the temperature of tracing steam, as catalytic cycle slurry oil etc., make tracing steam become the cold medium of heat-obtaining, use incessantly steam, caused the waste of energy and the consumption of water resources.
Summary of the invention
In order to solve the problem of prior art, the embodiment of the present invention provides a kind of self-controlled type energy-efficient tracing system.Taking steam as medium, in existing steam tracing system, control system is set, the intelligent control of implement device running state to tracing system, changes into interruption controllable way by the non-interruptible supply of steam, reduces the waste of energy and the consumption of water resources.Described technological scheme is as follows:
The energy-efficient tracing system of a kind of self-controlled type, taking steam as companion's thermal medium, in described steam tracing system, control system is set, comprise steam tracing system, purge wind system, between refining and petrochemical processing units or oil movement and storage system running state and steam tracing system, form interlocking by control unit, form servo-actuated in order to the come into operation/excision of steam tracing system and the operation/suspended state of refining and petrochemical processing units or oil movement and storage system.
Particularly, described control system is that formula is controlled in total vapour source, at least comprise: tracing steam cutting-off valve, the remote holder valve of tracing steam cutting-off valve, the defensive position valve of tracing steam cutting-off valve, the by-pass valve of tracing steam cutting-off valve, purge wind cutting-off valve, purge the remote holder valve of wind cutting-off valve, purge the defensive position valve of wind cutting-off valve, purge the by-pass valve of wind cutting-off valve, tracing steam main road, tracing steam loop, purge wind main road, purge wind loop, pipeline is gathered in total vapour source, Article 1, heat traced pipeline, Article 2 heat traced pipeline, Article 3 heat traced pipeline, N article of heat traced pipeline, tracing steam import, refining and petrochemical processing units or oil movement and storage system, control unit, purge wind inlet and relevant control circuit.
Particularly, described refining and petrochemical processing units or oil movement and storage system connect described control unit by relevant control circuit, described control unit connects the tracing steam cutting-off valve of described steam tracing system by relevant control circuit, described tracing steam cutting-off valve is positioned on described tracing steam main road, is also connected with the remote holder valve of described tracing steam cutting-off valve, the defensive position valve of described tracing steam cutting-off valve on described tracing steam main road; On described tracing steam main road, be parallel with described tracing steam loop, its tie point is positioned on the pipeline of remote holder valve front portion of described tracing steam cutting-off valve and on the pipeline at the defensive position valve rear portion of described tracing steam cutting-off valve, is connected with the by-pass valve of described tracing steam cutting-off valve on described tracing steam loop.
Particularly, described control unit connects the purging wind cutting-off valve of described purging wind system by relevant control circuit, described purging wind cutting-off valve is positioned on described purging wind main road, is also connected with the remote holder valve of described purging wind cutting-off valve, the defensive position valve of described purging wind cutting-off valve on described purging wind main road; On described purging wind main road, be parallel with described purging wind loop, its tie point is positioned on the pipeline of remote holder valve front portion of described purging wind cutting-off valve and on the pipeline at the defensive position valve rear portion of described purging wind cutting-off valve, is connected with the by-pass valve of described purging wind cutting-off valve on described purging wind loop.
Particularly, one end of described tracing steam main road is connected described total vapour source and gathers pipeline with one end intersection of described purging wind main road, and pipeline some heat traced pipelines in parallel are gathered in described total vapour source; The other end of described tracing steam main road connects described tracing steam import, and the other end of described purging wind main road connects described purging wind inlet, and described purging wind inlet 4 connects nitrogen gas preparing.
Particularly, described control system is controlled formula for point vapour source, at least comprises: Article 1 tracing steam cutting-off valve, Article 1, the remote holder valve of tracing steam cutting-off valve, Article 1, the defensive position valve of tracing steam cutting-off valve, Article 1, the by-pass valve of tracing steam cutting-off valve, Article 1, purge wind cutting-off valve, Article 1, purge the remote holder valve of wind cutting-off valve, Article 1, purge the defensive position valve of wind cutting-off valve, Article 1, purge the by-pass valve of wind cutting-off valve, N article of tracing steam cutting-off valve, the remote holder valve of N article of tracing steam cutting-off valve, the defensive position valve of N article of tracing steam cutting-off valve, the by-pass valve of N article of tracing steam cutting-off valve, N article purges wind cutting-off valve, N article purges the remote holder valve of wind cutting-off valve, N article purges the defensive position valve of wind cutting-off valve, N article purges the by-pass valve of wind cutting-off valve, Article 1, tracing steam main road, Article 1, tracing steam loop, Article 1, purge wind main road, Article 1, purge wind loop, Article 1, gather pipeline, N article of tracing steam main road, N article of tracing steam loop, N article purges wind main road, N article purges wind loop, N article is gathered pipeline, Article 1, tracing steam import, refining and petrochemical processing units or oil movement and storage system, control unit, Article 1, purge wind inlet, N article of heat traced pipeline import, the import of N bar of sweeping wind pipe line, Article 1, heat traced pipeline, N article of heat traced pipeline and relevant control circuit.
Particularly, described refining and petrochemical processing units or oil movement and storage system connect described control unit by relevant control circuit, and described control unit connects respectively some groups of steam tracing system by some relevant control circuits and purges the control system of wind system; Described control unit connects the Article 1 tracing steam cutting-off valve of described steam tracing system by relevant control circuit, described Article 1 tracing steam cutting-off valve is positioned on described Article 1 tracing steam main road, is also connected with the remote holder valve of described Article 1 tracing steam cutting-off valve, the defensive position valve of described Article 1 tracing steam cutting-off valve on described Article 1 tracing steam main road; On described Article 1 tracing steam main road, be parallel with described Article 1 tracing steam loop, its tie point is positioned on the pipeline of remote holder valve front portion of described Article 1 tracing steam cutting-off valve and on the pipeline at the defensive position valve rear portion of described Article 1 tracing steam cutting-off valve, is connected with the by-pass valve of described Article 1 tracing steam cutting-off valve on described Article 1 tracing steam loop.
Particularly, the Article 1 that described control unit connects described purging wind system by another relevant control circuit purges wind cutting-off valve, described Article 1 purges wind cutting-off valve and is positioned on described Article 1 purging wind main road, and described Article 1 purges the remote holder valve that is also connected with described Article 1 purging wind cutting-off valve on wind main road, the defensive position valve of described Article 1 purging wind cutting-off valve; On described Article 1 purging wind main road, be parallel with described Article 1 and purge wind loop, its tie point is positioned on the pipeline of remote holder valve front portion that described Article 1 purges wind cutting-off valve and described Article 1 purges on the pipeline at defensive position valve rear portion of wind cutting-off valve, and described Article 1 purges the by-pass valve that is connected with described Article 1 on wind loop and purges wind cutting-off valve.
Particularly, one end intersection that one end of described Article 1 tracing steam main road and described Article 1 purge wind main road is connected described Article 1 and gathers pipeline, and described Article 1 gathers the pipeline described Article 1 heat traced pipeline of connecting; The other end of described Article 1 tracing steam main road connects the import of described Article 1 tracing steam, and the other end that described Article 1 purges wind main road connects described Article 1 purging wind inlet, and described Article 1 purges wind inlet and connects described nitrogen gas preparing.
Further, each branch's heat traced pipeline described in described steam tracing system or described purging wind system or system is manually to control.
The beneficial effect that the technological scheme that the embodiment of the present invention provides is brought is:
By control system being set in existing steam tracing system, between refining and petrochemical processing units or oil movement and storage system running state and steam tracing system, form interlocking by control units such as programmable controller (being called for short PLC) or distributed control systems (being called for short DCS), uninterruptedly pass into formula steam tracing and be improved to automatic control and be interrupted supply type steam tracing existing, system operational excellence, realize refining and petrochemical processing units or the intelligent control of oil movement and storage system running state to steam tracing system, rationally use discontinuously steam, ensure the temperature of medium temperature lower than tracing steam, effectively reduce the waste of energy and the consumption of water resources, be conducive to energy saving consumption, energy-saving and water-saving.
Brief description of the drawings
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the energy-efficient tracing system structural representation of total vapour source self-controlled type that the embodiment of the present invention one provides;
Fig. 2 is point energy-efficient tracing system structural representation of vapour source self-controlled type that the embodiment of the present invention two provides.
In Fig. 1, each symbol represents that implication is as follows:
XOV1 tracing steam cutting-off valve;
The remote holder valve of Vs1 tracing steam cutting-off valve;
The defensive position valve of Vs2 tracing steam cutting-off valve;
The by-pass valve of Vs3 tracing steam cutting-off valve;
XCV1 purges wind cutting-off valve;
Vw1 purges the remote holder valve of wind cutting-off valve;
Vw2 purges the defensive position valve of wind cutting-off valve;
Vw3 purges the by-pass valve of wind cutting-off valve;
A tracing steam main road, B tracing steam loop, C purges wind main road, and D purges wind loop, and pipeline is gathered in the total vapour of E source;
I Article 1 heat traced pipeline, II Article 2 heat traced pipeline, III Article 3 heat traced pipeline, N article of heat traced pipeline of N;
1 tracing steam import, 2 refining and petrochemical processing units or oil movement and storage system, 3 control units, 4 purge wind inlet.
In Fig. 2, each symbol represents that implication is as follows:
XOVa Article 1 tracing steam cutting-off valve;
The remote holder valve of Vsa Article 1 tracing steam cutting-off valve;
The defensive position valve of Vsb Article 1 tracing steam cutting-off valve;
The by-pass valve of Vsc Article 1 tracing steam cutting-off valve;
XCVa Article 1 purges wind cutting-off valve;
Vwa Article 1 purges the remote holder valve of wind cutting-off valve;
Vwb Article 1 purges the remote holder valve of wind cutting-off valve;
Vwc Article 1 purges the remote holder valve of wind cutting-off valve;
N article of tracing steam cutting-off valve of XOVn;
The remote holder valve of N article of tracing steam cutting-off valve of Vsn;
The defensive position valve of N article of tracing steam cutting-off valve of Vsm;
The by-pass valve of N article of tracing steam cutting-off valve of Vsp;
N article of purging wind cutting-off valve of XCVn;
The remote holder valve of N article of purging wind cutting-off valve of Vwn;
The defensive position valve of N article of purging wind cutting-off valve of Vwm;
The by-pass valve of N article of purging wind cutting-off valve of Vwp;
Aa Article 1 tracing steam main road, Ba Article 1 tracing steam loop, Ca Article 1 purges wind main road, and Da Article 1 purges wind loop, and Ea Article 1 gathers pipeline;
N article of tracing steam main road of An, N article of tracing steam loop of Bn, N article of Cn purges wind main road, and N article of Dn purges wind loop, and N article of En gathers pipeline;
The import of 1a Article 1 tracing steam, 2 refining and petrochemical processing units or oil movement and storage system, 3 control units, 4a Article 1 purges wind inlet;
N article of heat traced pipeline import of 1an, the import of N bar of sweeping wind pipe line of 4an;
I Article 1 heat traced pipeline, N article of heat traced pipeline of N.
Shown in figure: black matrix arrow is that tracing steam flows to; Hollow arrow for purge distinguished and admirable to; Fat body arrow is branch's heat traced pipeline steam flow.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
The embodiment of the present invention provides a kind of self-controlled type energy-efficient tracing system, taking steam as companion's thermal medium, in existing steam tracing system, control system is set, comprise steam tracing system, purge wind system, between refining and petrochemical processing units or oil movement and storage system running state and steam tracing system, form interlocking by control units such as programmable controller (being called for short PLC) or distributed control systems (being called for short DCS), make the come into operation/excision of steam tracing system and the operation/suspended state of refining and petrochemical processing units or oil movement and storage system form servo-actuated, realize the automatic control function of steam tracing system, reach the object of energy-saving and water-saving.Also each branch's heat traced pipeline in whole steam tracing system or system can be adopted manually and controls, thereby reduce refining and petrochemical processing units or the energy consumption of oil movement and storage system in normal productive process.
Below provide preferred embodiment.
Embodiment one
Shown in Figure 1, the control system that the embodiment of the present invention arranges in steam tracing system is that formula is controlled in total vapour source, at least comprise: tracing steam cutting-off valve XOV1, the remote holder valve Vs1 of tracing steam cutting-off valve, the defensive position valve Vs2 of tracing steam cutting-off valve, the by-pass valve Vs3 of tracing steam cutting-off valve, purge wind cutting-off valve XCV1, purge the remote holder valve Vw1 of wind cutting-off valve, purge the defensive position valve Vw2 of wind cutting-off valve, purge the by-pass valve Vw3 of wind cutting-off valve, tracing steam main road A, tracing steam loop B, purge wind main road C, purge wind loop D, pipeline E is gathered in total vapour source, Article 1, heat traced pipeline I, Article 2 heat traced pipeline II, Article 3 heat traced pipeline III, N article of heat traced pipeline N, tracing steam import 1, refining and petrochemical processing units or oil movement and storage system 2, control unit 3, purge wind inlet 4 grade and relevant control circuits, the tracing steam of described refining and petrochemical processing units or oil movement and storage system 2 mostly derives from steam boiler or refining and petrochemical processing units or oil movement and storage system and self has the steam occurring by the drum that steams after suitable potential temperature material.Described refining and petrochemical processing units or oil movement and storage system 2 and described control valve are prior art, buyable product.
Particularly, as preferably, described refining and petrochemical processing units or oil movement and storage system 2 are by relevant control circuit connection control unit 3, described control unit 3 connects the tracing steam cutting-off valve XOV1 of steam tracing system by a relevant control circuit, described tracing steam cutting-off valve XOV1 is positioned on tracing steam main road A, on described tracing steam main road A, be also connected with the remote holder valve Vs1 of tracing steam cutting-off valve, the defensive position valve Vs2 of tracing steam cutting-off valve, be positioned at the front and back of tracing steam cutting-off valve XOV1; On described tracing steam main road A, be parallel with tracing steam loop B, tie point is positioned on the pipeline of remote holder valve Vs1 front portion of tracing steam cutting-off valve and on the pipeline at the defensive position valve Vs2 rear portion of tracing steam cutting-off valve, is connected with the by-pass valve Vs3 of tracing steam cutting-off valve on described tracing steam loop B.
Particularly, described control unit 3 connects the purging wind cutting-off valve XCV1 that purges wind system by another relevant control circuit, described purging wind cutting-off valve XCV1 is positioned at and purges on wind main road C, on described purging wind main road C, be also connected with and purge the remote holder valve Vw1 of wind cutting-off valve, the defensive position valve Vw2 of purging wind cutting-off valve, be positioned at the front and back that purge wind cutting-off valve XCV1; On described purging wind main road C, be parallel with and purge wind loop D, tie point is positioned on the pipeline of the remote holder valve Vw1 front portion that purges wind cutting-off valve and purges on the pipeline at defensive position valve Vw2 rear portion of wind cutting-off valve, is connected with the by-pass valve Vw3 that purges wind cutting-off valve on described purging wind loop D.
Particularly, one end of described tracing steam main road A is connected total vapour source with one end intersection that purges wind main road C and gathers pipeline E, pipeline E some heat traced pipelines in parallel are gathered in described total vapour source, comprise Article 1 heat traced pipeline I, Article 2 heat traced pipeline II, Article 3 heat traced pipeline III, until N article of heat traced pipeline N; The other end of described tracing steam main road A connects tracing steam import 1, and the other end of described purging wind main road C connects purging wind inlet 4; Described purging wind inlet 4 connects nitrogen (N2) equipment, and reactor assembly is carried out to hot nitrogen purge operations, the oil gas of expulsion in reaction system, blow line, equipment manufacture and installation process in the impurity such as residual iron rust, welding slag, silt particle.
The embodiment of the embodiment of the present invention one and working principle: in built refining and petrochemical processing units or oil movement and storage system or building refining and petrochemical processing units or in the design phase of oil movement and storage system, pipeline steam tracing system is carried out to integration and upgrade, in refining and petrochemical processing units or oil movement and storage system, top circulating reflux oil product, mid-pumparound oil product, slurry oil circulation oil product, the conveyance conduits such as acidic aqueous media all adopt 1.0MPa steam tracing, heat traced pipeline quantity is set to 11, pipeline drift diameter is DN25, every steam tracing line outlet is established and is started the STEAM TRAP that pressure reduction is 0.75Mpa.
Tracing steam main road A is gathered to pipeline E with purging wind main road C by relevant control circuit and total vapour source and be integrated into a place, form a valve sets, share a tracing steam vapour source, for controlling formula in total vapour source, after gathering pipeline E, total vapour source arranges respectively again the take-off line that each needs pipeline, comprise Article 1 heat traced pipeline I, Article 2 heat traced pipeline II, Article 3 heat traced pipeline III, until N article of heat traced pipeline N; Described tracing steam main road A and the controlled unit 3 of control valve purging on wind main road C are controlled, by operating parameter that can decision maker running state in control unit 3 and refining and petrochemical processing units or oil movement and storage system 2, as install inlet amount, furnace outlet temperature, device main air flow etc., the interlocking of realizing between refining and petrochemical processing units or oil movement and storage system running state and steam tracing system is controlled automatically.This total vapour source control mode can realize the automatic switching of tracing system and use and excision, and the anti-purge overall process of congealing in TRACER road.
On DCS, increase the tracing steam loop B of steam tracing system and the purging wind loop D of purging wind system by control units such as programmable controller (being called for short PLC) or distributed control systems (being called for short DCS), with the nitrogen (N2) of 1.5MPa as blowing medium, steam tracing system and the main air flow that can identify refining and petrochemical processing units or oil movement and storage system running state, two operating parameters of raw material inlet amount form 2 and select 1 triggering interlocking, purge time is set as two hours, when main air unit fault, refining and petrochemical processing units or oil movement and storage system are out of service, main air changes in flow rate triggers steam tracing system action, steam passes in heat traced pipeline, maintain in time pipe temperature.After refining and petrochemical processing units or oil movement and storage system are recovered normally, main air changes in flow rate triggers purging wind nitrogen (N2) the control valve action that purges wind system again, purge two hours, have no water smoke in STEAM TRAP outlet, after two hours, tracing system is again in halted state.
Embodiment two
Shown in Figure 2, the control system that the embodiment of the present invention arranges in steam tracing system is controlled formula for point vapour source, at least comprises: Article 1 tracing steam cutting-off valve XOVa, Article 1, the remote holder valve Vsa of tracing steam cutting-off valve, Article 1, the defensive position valve Vsb of tracing steam cutting-off valve, Article 1, the by-pass valve Vsc of tracing steam cutting-off valve, Article 1, purge wind cutting-off valve XCVa, Article 1, purge the remote holder valve Vwa of wind cutting-off valve, Article 1, purge the defensive position valve Vwb of wind cutting-off valve, Article 1, purge the by-pass valve Vwc of wind cutting-off valve, N article of tracing steam cutting-off valve XOVn, the remote holder valve Vsn of N article of tracing steam cutting-off valve, the defensive position valve Vsm of N article of tracing steam cutting-off valve, the by-pass valve Vsp of N article of tracing steam cutting-off valve, N article purges wind cutting-off valve XCVn, N article purges the remote holder valve Vwn of wind cutting-off valve, N article purges the defensive position valve Vwm of wind cutting-off valve, N article purges the by-pass valve Vwp of wind cutting-off valve, Article 1, tracing steam main road Aa, Article 1, tracing steam loop Ba, Article 1, purge wind main road Ca, Article 1, purge wind loop Da, Article 1, gather pipeline Ea, N article of tracing steam main road An, N article of tracing steam loop Bn, N article purges wind main road Cn, N article purges wind loop Dn, N article is gathered pipeline En, Article 1, tracing steam import 1a, refining and petrochemical processing units or oil movement and storage system 2, control unit 3, Article 1, purge wind inlet 4a, N article of heat traced pipeline import 1an, N article of sweeping wind pipe line import 4an, Article 1, heat traced pipeline I, N article of heat traced pipeline N etc. and relevant control circuit.Described refining and petrochemical processing units or oil movement and storage system 2 and described control valve are prior art, buyable product.
Particularly, as preferably, described refining and petrochemical processing units or oil movement and storage system 2 are by relevant control circuit connection control unit 3, described control unit 3 connects respectively some groups of steam tracing system by some relevant control circuits and purges the control system of wind system, wherein, described control unit 3 connects the Article 1 tracing steam cutting-off valve XOVa of steam tracing system by a relevant control circuit, described Article 1 tracing steam cutting-off valve XOVa is positioned on Article 1 tracing steam main road Aa, on described Article 1 tracing steam main road Aa, be also connected with the remote holder valve Vsa of Article 1 tracing steam cutting-off valve, Article 1, the defensive position valve Vsb of tracing steam cutting-off valve, be positioned at the front and back of Article 1 tracing steam cutting-off valve XOVa, on described Article 1 tracing steam main road Aa, be parallel with Article 1 tracing steam loop Ba, tie point is positioned on the pipeline of remote holder valve Vsa front portion of Article 1 tracing steam cutting-off valve and on the pipeline at the defensive position valve Vsb rear portion of Article 1 tracing steam cutting-off valve, is connected with the by-pass valve Vsc of Article 1 tracing steam cutting-off valve on described Article 1 tracing steam loop Ba.
Particularly, described control unit 3 connects the Article 1 purging wind cutting-off valve XCVa that purges wind system by another relevant control circuit, described Article 1 purges wind cutting-off valve XCVa and is positioned on Article 1 purging wind main road Ca, described Article 1 purges on wind main road Ca and is also connected with remote holder valve Vwa, the defensive position valve Vwb that Article 1 purges wind cutting-off valve that Article 1 purges wind cutting-off valve, is positioned at the front and back of Article 1 purging wind cutting-off valve XCVa; On described Article 1 purging wind main road Ca, be parallel with Article 1 and purge wind loop Da, tie point is positioned on the pipeline of remote holder valve Vwa front portion that Article 1 purges wind cutting-off valve and Article 1 purges on the pipeline at defensive position valve Vwb rear portion of wind cutting-off valve, and described Article 1 purges the by-pass valve Vwc that is connected with Article 1 on the Da of wind loop and purges wind cutting-off valve.
Particularly, one end of described Article 1 tracing steam main road Aa is connected Article 1 with one end intersection of Article 1 purging wind main road Ca and gathers pipeline Ea, and described Article 1 gathers pipeline Ea series connection Article 1 heat traced pipeline I; The other end of described Article 1 tracing steam main road Aa connects Article 1 tracing steam import 1a, and the other end that described Article 1 purges wind main road Ca connects Article 1 purging wind inlet 4a; Described Article 1 purges wind inlet 4a and connects nitrogen (N2) equipment.
By that analogy, described in the embodiment of the present invention Article 2 heat traced pipeline II, Article 3 heat traced pipeline III until the system architectures such as N article of heat traced pipeline N are same as above; Taking N article of heat traced pipeline N in Fig. 2 as example, the described one article of relevant control circuit being connected with control unit 3 connects N article of tracing steam cutting-off valve XOVn of steam tracing system, described N article of tracing steam cutting-off valve XOVn is positioned on N article of tracing steam main road An, on described N article of tracing steam main road An, be also connected with the remote holder valve Vsn of N article of tracing steam cutting-off valve, the defensive position valve Vsm of N article tracing steam cutting-off valve, be positioned at the front and back of N article of tracing steam cutting-off valve XOVn; On described N article of tracing steam main road An, be parallel with N article of tracing steam loop Bn, tie point is positioned on the pipeline of remote holder valve Vsn front portion of N article of tracing steam cutting-off valve and on the pipeline at the defensive position valve Vsm rear portion of N article of tracing steam cutting-off valve, is connected with the by-pass valve Vsp of N article of tracing steam cutting-off valve on described N article of tracing steam loop Bn.
Particularly, described another article of relevant control circuit being connected with control unit 3 connects the N article of purging wind cutting-off valve XCVn that purges wind system, described N article of purging wind cutting-off valve XCVn is positioned at N article and purges on wind main road Cn, described N article purges the defensive position valve Vwm that is also connected with remote holder valve Vwn, N article of purging wind cutting-off valve of N article of purging wind cutting-off valve on wind main road Cn, is positioned at the N article of front and back that purge wind cutting-off valve XCVn; On described N article of purging wind main road Cn, be parallel with N article and purge wind loop Dn, tie point be positioned on the pipeline of N article of remote holder valve Vwn front portion that purges wind cutting-off valve and the pipeline at the defensive position valve Vwm rear portion that N article purges wind cutting-off valve on, described N article purges and on the Dn of wind loop, is connected with N article of by-pass valve Vwp that purges wind cutting-off valve.
Particularly, one end intersection that one end of described N article of tracing steam main road An purges wind main road Cn with N article is connected N article and gathers pipeline En, and described N article is gathered the pipeline En N article of heat traced pipeline N that connect; The other end of described N article of tracing steam main road An connects N article of heat traced pipeline import 1an, and the described N article of the other end that purges wind main road Cn connects N article of sweeping wind pipe line import 4an; Described N article of sweeping wind pipe line import 4an connects nitrogen (N2) equipment.
The embodiment of the embodiment of the present invention two and working principle: to built refining and petrochemical processing units or oil movement and storage system or building in the design phase of refining and petrochemical processing units or oil movement and storage system, pipeline steam tracing system is carried out to integration and upgrade design, purge wind main road Ca as example taking Article 1 tracing steam main road Aa in Fig. 2 and Article 1, described Article 1 tracing steam main road Aa and Article 1 are purged to wind main road Ca and gather pipeline Ea by Article 1 and be integrated into a place, form a valve sets; By that analogy, purge wind main road Cn to N article of tracing steam main road An and N article and gather pipeline En by N article and be integrated into a place, form another valve sets; Above-mentioned each tracing steam main road and the control valve purging on wind main road are controlled by described control unit 3, control unit 3 again with refining and petrochemical processing units or oil movement and storage system in can decision maker running state operating parameter, as device inlet amount, furnace outlet temperature, device main air flow etc. form interlocking.
When refining and petrochemical processing units or oil movement and storage system are during in normal production status, each pipeline inner fluid temperature with the hot facility of companion is all higher than medium condensation point, now, steam source control valve (VS series) and purging wind control valve (VW series) are in closed condition, Article 1 in heat traced pipeline I without vapor flow, and, because 0 DEG C of the fluid temperature (F.T.) > in TRACER road, reveal even if there is steam source control valve, also can not form pipeline and congeal phenomenon; Because control unit 3 relies on DCS system, there is uninterruptable power source power supply system (UPS) power supply to ensure, when the operation of refining and petrochemical processing units or oil movement and storage system is unexpected while stopping, control unit 3 and can the operating parameter of decision maker running state between the interlocking action that forms, steam source control valve (VS series) is opened, purge wind control valve (VW series) still in closed condition, steam enters each branch's heat traced pipeline I ... N, for being provided thermal source by companion's thermal medium, discharge through STEAM TRAP, reach the object that prevents that pipeline from congealing.Recover after normal operation in refining and petrochemical processing units or oil movement and storage system, interlocking is action again, now steam source control valve (VS series) is closed, purging wind control valve (VW series) opens, to each branch's heat traced pipeline I ... in N, pass into pressurized air or nitrogen (N2), eject the steam or the water of condensation that in pipe, retain, complete the processing of pipe in tracing system being deposited to steam condensation water simultaneously.The time that passes into of described pressurized air or nitrogen (N2) can manually be set, and set time is as the criterion during without water smoke with STEAM TRAP place.
Two this points of vapour source control modes of the embodiment of the present invention not only can realize the automatic switching of tracing system and use and excision, and the anti-purging overall process of congealing in TRACER road, can also be by each branch's heat traced pipeline described in whole steam tracing system or described purging wind system or system, comprise Article 1 heat traced pipeline I, Article 2 heat traced pipeline II, Article 3 heat traced pipeline III, until adopting manually, N article of heat traced pipeline N etc. control, artificial selection a certain or some the part steam tracing that comes into operation, realize coming into operation of a certain or some part TRACER road, adopt the excision of manually controlling and purge overall process identical with the automatic control mode of aforementioned employing control unit, adopt manual control can reduce refining and petrochemical processing units or the energy consumption of oil movement and storage system in normal productive process.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the energy-efficient tracing system of self-controlled type, taking steam as companion's thermal medium, it is characterized in that, in described steam tracing system, control system is set, comprise steam tracing system, purge wind system, between refining and petrochemical processing units or oil movement and storage system running state and steam tracing system, form interlocking by control unit, form servo-actuated in order to the come into operation/excision of steam tracing system and the operation/suspended state of refining and petrochemical processing units or oil movement and storage system.
2. the energy-efficient tracing system of self-controlled type according to claim 1, it is characterized in that, described control system is that formula is controlled in total vapour source, at least comprise: tracing steam cutting-off valve, the remote holder valve of tracing steam cutting-off valve, the defensive position valve of tracing steam cutting-off valve, the by-pass valve of tracing steam cutting-off valve, purge wind cutting-off valve, purge the remote holder valve of wind cutting-off valve, purge the defensive position valve of wind cutting-off valve, purge the by-pass valve of wind cutting-off valve, tracing steam main road, tracing steam loop, purge wind main road, purge wind loop, pipeline is gathered in total vapour source, Article 1, heat traced pipeline, Article 2 heat traced pipeline, Article 3 heat traced pipeline, N article of heat traced pipeline, tracing steam import, refining and petrochemical processing units or oil movement and storage system, control unit, purge wind inlet and relevant control circuit.
3. the energy-efficient tracing system of self-controlled type according to claim 2, it is characterized in that, described refining and petrochemical processing units or oil movement and storage system connect described control unit by relevant control circuit, described control unit connects the tracing steam cutting-off valve of described steam tracing system by relevant control circuit, described tracing steam cutting-off valve is positioned on described tracing steam main road, is also connected with the remote holder valve of described tracing steam cutting-off valve, the defensive position valve of described tracing steam cutting-off valve on described tracing steam main road; On described tracing steam main road, be parallel with described tracing steam loop, its tie point is positioned on the pipeline of remote holder valve front portion of described tracing steam cutting-off valve and on the pipeline at the defensive position valve rear portion of described tracing steam cutting-off valve, is connected with the by-pass valve of described tracing steam cutting-off valve on described tracing steam loop.
4. the energy-efficient tracing system of self-controlled type according to claim 3, it is characterized in that, described control unit connects the purging wind cutting-off valve of described purging wind system by relevant control circuit, described purging wind cutting-off valve is positioned on described purging wind main road, is also connected with the remote holder valve of described purging wind cutting-off valve, the defensive position valve of described purging wind cutting-off valve on described purging wind main road; On described purging wind main road, be parallel with described purging wind loop, its tie point is positioned on the pipeline of remote holder valve front portion of described purging wind cutting-off valve and on the pipeline at the defensive position valve rear portion of described purging wind cutting-off valve, is connected with the by-pass valve of described purging wind cutting-off valve on described purging wind loop.
5. according to the energy-efficient tracing system of the self-controlled type described in claim 3 or 4, it is characterized in that, one end of described tracing steam main road is connected described total vapour source and gathers pipeline with one end intersection of described purging wind main road, pipeline some heat traced pipelines in parallel are gathered in described total vapour source; The other end of described tracing steam main road connects described tracing steam import, and the other end of described purging wind main road connects described purging wind inlet, and described purging wind inlet 4 connects nitrogen gas preparing.
6. the energy-efficient tracing system of self-controlled type according to claim 1, is characterized in that, described control system is controlled formula for point vapour source, at least comprises: Article 1 tracing steam cutting-off valve, Article 1, the remote holder valve of tracing steam cutting-off valve, Article 1, the defensive position valve of tracing steam cutting-off valve, Article 1, the by-pass valve of tracing steam cutting-off valve, Article 1, purge wind cutting-off valve, Article 1, purge the remote holder valve of wind cutting-off valve, Article 1, purge the defensive position valve of wind cutting-off valve, Article 1, purge the by-pass valve of wind cutting-off valve, N article of tracing steam cutting-off valve, the remote holder valve of N article of tracing steam cutting-off valve, the defensive position valve of N article of tracing steam cutting-off valve, the by-pass valve of N article of tracing steam cutting-off valve, N article purges wind cutting-off valve, N article purges the remote holder valve of wind cutting-off valve, N article purges the defensive position valve of wind cutting-off valve, N article purges the by-pass valve of wind cutting-off valve, Article 1, tracing steam main road, Article 1, tracing steam loop, Article 1, purge wind main road, Article 1, purge wind loop, Article 1, gather pipeline, N article of tracing steam main road, N article of tracing steam loop, N article purges wind main road, N article purges wind loop, N article is gathered pipeline, Article 1, tracing steam import, refining and petrochemical processing units or oil movement and storage system, control unit, Article 1, purge wind inlet, N article of heat traced pipeline import, the import of N bar of sweeping wind pipe line, Article 1, heat traced pipeline, N article of heat traced pipeline and relevant control circuit.
7. the energy-efficient tracing system of self-controlled type according to claim 6, it is characterized in that, described refining and petrochemical processing units or oil movement and storage system connect described control unit by relevant control circuit, and described control unit connects respectively some groups of steam tracing system by some relevant control circuits and purges the control system of wind system; Described control unit connects the Article 1 tracing steam cutting-off valve of described steam tracing system by relevant control circuit, described Article 1 tracing steam cutting-off valve is positioned on described Article 1 tracing steam main road, is also connected with the remote holder valve of described Article 1 tracing steam cutting-off valve, the defensive position valve of described Article 1 tracing steam cutting-off valve on described Article 1 tracing steam main road; On described Article 1 tracing steam main road, be parallel with described Article 1 tracing steam loop, its tie point is positioned on the pipeline of remote holder valve front portion of described Article 1 tracing steam cutting-off valve and on the pipeline at the defensive position valve rear portion of described Article 1 tracing steam cutting-off valve, is connected with the by-pass valve of described Article 1 tracing steam cutting-off valve on described Article 1 tracing steam loop.
8. the energy-efficient tracing system of self-controlled type according to claim 7, it is characterized in that, the Article 1 that described control unit connects described purging wind system by another relevant control circuit purges wind cutting-off valve, described Article 1 purges wind cutting-off valve and is positioned on described Article 1 purging wind main road, and described Article 1 purges the remote holder valve that is also connected with described Article 1 purging wind cutting-off valve on wind main road, the defensive position valve of described Article 1 purging wind cutting-off valve; On described Article 1 purging wind main road, be parallel with described Article 1 and purge wind loop, its tie point is positioned on the pipeline of remote holder valve front portion that described Article 1 purges wind cutting-off valve and described Article 1 purges on the pipeline at defensive position valve rear portion of wind cutting-off valve, and described Article 1 purges the by-pass valve that is connected with described Article 1 on wind loop and purges wind cutting-off valve.
9. according to the energy-efficient tracing system of the self-controlled type described in claim 7 or 8, it is characterized in that, one end intersection that one end of described Article 1 tracing steam main road and described Article 1 purge wind main road is connected described Article 1 and gathers pipeline, and described Article 1 gathers the pipeline described Article 1 heat traced pipeline of connecting; The other end of described Article 1 tracing steam main road connects the import of described Article 1 tracing steam, and the other end that described Article 1 purges wind main road connects described Article 1 purging wind inlet, and described Article 1 purges wind inlet and connects described nitrogen gas preparing.
10. the energy-efficient tracing system of self-controlled type according to claim 1, is characterized in that, each branch's heat traced pipeline described in described steam tracing system or described purging wind system or system is manually to control.
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| CN110617400A (en) * | 2019-10-10 | 2019-12-27 | 雷泽永 | Automatic control device for preventing condensation and heat tracing steam in oil refinery oil pipeline accidents |
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