CN203248411U - Three-section reverse-flow system used for anti-surge of supercharger - Google Patents
Three-section reverse-flow system used for anti-surge of supercharger Download PDFInfo
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- CN203248411U CN203248411U CN 201320178760 CN201320178760U CN203248411U CN 203248411 U CN203248411 U CN 203248411U CN 201320178760 CN201320178760 CN 201320178760 CN 201320178760 U CN201320178760 U CN 201320178760U CN 203248411 U CN203248411 U CN 203248411U
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Abstract
The utility model discloses a three-section reverse-flow system for anti-surge of a supercharger. The three-section reverse-flow system for the anti-surge of the supercharger comprises a two-section reverse-flow anti-surge valve, a two-section reverse-flow pipeline, a three-section reverse-flow anti-surge valve and a three-section reverse-flow pipeline. The two-section reverse-flow pipeline is connected with a two-section outlet pipeline and a one-section inlet pipeline. The two-section reverse-flow anti-surge valve is arranged on the two-section reverse-flow pipeline. The two-section outlet pipeline is also communicated with a supercharging expansion machine pipeline. The three-section reverse-flow pipeline is connected with a three-section outlet pipeline and a three-section inlet pipeline. The three-section reverse-flow anti-surge valve is arranged on the three-section reverse-flow pipeline. The three-section outlet pipeline is also connected to a process system. A three-section inlet check valve is arranged on the three-section inlet pipeline, and the connecting point of the three-section reverse-flow pipeline and the three-section inlet pipeline is arranged behind the three-section inlet check valve. Due to the fact that the check valve is additionally arranged on the three-section inlet pipeline of the supercharger and the three-section reverse-flow anti-surge valve pipeline is arranged behind the three-section inlet check valve, three-section reverse-flow anti-surge gas can be effectively prevented from flowing to a three-section inlet, and the three-section reverse-flow anti-surge effect is improved.
Description
Technical field
The utility model relates to three sections return-flow systems of pressure-increasing machine anti-surge, belongs to the device field of general engineering machinery.
Background technique
Empty minute basic skills is divided into low temperature distillation method, pressure swing adsorption method, film separating method etc., and wherein the low temperature distillation method is most widely used general.Empty minute is that air separation is exactly first with air liquefaction, the boiling point of recycling oxygen, nitrogen is different, low-boiling nitrogen is with respect to oxygen this characteristic that more easily gasifies, in rectifying column, allow the lower withdrawing fluid of the higher mixed vapour of temperature and temperature constantly be in contact with one another, nitrogen in the liquid more evaporates, and more condensation of the oxygen in the gas improves constantly the nitrogen content in the rising steam, oxygen content in the lower flowing liquid constantly increases, thereby realizes air separation.
Pressure-increasing machine is the power equipment in the low temperature distillation method air separation facility, plays the effect of " heart ", so the performance of pressure-increasing machine has determined effect and the efficient of whole air separation facility.Pressure-increasing machine is role in low temperature distillation method air separation: 1) gas of two sections extractions goes the supercharging of decompressor pressurized end, enters the high pressure main heat exchanger after being cooled off by water cooler; 2) pressure-increasing machine final stage exit gas enters the high pressure main heat exchanger after pressure-increasing machine aftercooler cooling, with the liquid oxygen heat exchange of being pressurizeed by liquid oxygen pump, after the liquefaction again throttling enter Xia Ta.The means of backflow anti-asthma that usually adopt the flow that means pressure-increasing machine and the pressure unmatched of surging phenomenon, related domain reduce the surge impact; The backflow anti-asthma be by backflow anti-asthma pipeline so that reflux medium is got back to entrance, make its flow and pressure the coupling.
As shown in Figure 1, three sections return-flow systems of at present common pressure-increasing machine anti-surge comprise two sections backflow anti-surge valves 1, two sections return lines 2, three sections backflow anti-surge valves 3 and three sections return lines 4; Wherein, described two sections return lines 2 connect second stage exit pipeline 5 and one section inlet pipe 6; Two sections backflow anti-surge valves 1 are installed on two sections return lines 2; Second stage exit pipeline 5 also is communicated with booster expansion machine pipeline 7; Described three sections return lines 4 connect three sections outlet conduits 9 and three sections inlet pipes 8; Three sections backflow anti-surge valves 3 are installed on three sections return lines 4; Three sections outlet conduits 9 are also connected to process system; Although this return-flow system has solved the surge problem to a certain extent, but, when reflux gas is got back to two sections, because second stage exit pipeline 5 all is communicated with three sections inlet pipes 8, booster expansion machine pipeline 7, therefore, may enter three sections entrances at three sections return lines 4 reflux gas out, also may whereabouts booster expansion machine, even when the anti-surge valve of two sections backflows is opened simultaneously, may be back to one section.Like this when pressure-increasing machine runs to anti-surge point, the anti-surge effect that three sections backflow anti-surge valves play is unstable.Therefore, this system is improved, be necessary for improving pressure-increasing machine anti-surge effect.
Summary of the invention
For the defective that exists in the above-mentioned prior art or deficiency, the purpose of this utility model is, a kind of three sections return-flow systems of pressure-increasing machine anti-surge are provided, this system sets up safety check at three sections inlet pipes of pressure-increasing machine, three sections backflow anti-surge valve pipelines are received after three sections inlet non-return valves, thereby effectively control three sections entrances of three sections backflow anti-asthmas gas flow, improve three sections backflow anti-surge effects.
In order to achieve the above object, the utility model adopts following technological scheme to be solved:
A kind of three sections return-flow systems of pressure-increasing machine anti-surge comprise two sections backflow anti-surge valves, two sections return lines, three sections backflow anti-surge valves and three sections return lines; Wherein, described two sections return lines connect second stage exit pipeline and one section inlet pipe; Two sections backflow anti-surge valves are installed on two sections return lines; The second stage exit pipeline also with the booster expansion machine pipeline connection; Described three sections return lines connect three sections outlet conduits and three sections inlet pipes; Three sections backflow anti-surge valves are installed on three sections return lines; Three sections outlet conduits are also connected to process system; It is characterized in that, described three sections inlet pipes are provided with three sections inlet non-return valves, and the tie point of three sections return lines and three sections inlet pipes is positioned at after three sections inlet non-return valves.
Description of drawings
Fig. 1 is three sections return-flow systems of existing pressure-increasing machine anti-surge.
Fig. 2 is the structural representation of three sections return-flow systems of pressure-increasing machine anti-surge of the present utility model.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment
Referring to Fig. 1, three sections return-flow systems of the utility model pressure-increasing machine anti-surge comprise two sections backflow anti-surge valves 1, two sections return lines 2, three sections backflow anti-surge valves 3 and three sections return lines 4; Wherein, described two sections return lines 2 connect second stage exit pipeline 5 and one section inlet pipe 6; Two sections backflow anti-surge valves 1 are installed on two sections return lines 2; Second stage exit pipeline 5 also is communicated with booster expansion machine pipeline 7; Described three sections return lines 4 connect three sections outlet conduits 9 and three sections inlet pipes 8; Three sections backflow anti-surge valves 3 are installed on three sections return lines 4; Three sections outlet conduits 9 are also connected to process system; Described three sections inlet pipes 8 are provided with three sections inlet non-return valves 10, and the tie point of three sections return lines 4 and three sections inlet pipes 8 is positioned at after three sections inlet non-return valves 10.
The principle that can improve pressure-increasing machine anti-surge effect during system works of the present utility model is as follows: in the pressure-increasing machine working procedure, when three sections operating modes of pressure-increasing machine reach anti-surge line, three sections anti-surge valves 3 of pressure-increasing machine are opened several angle, and portion gas refluxes by three sections anti-surge valves 3.Three sections inlet non-return valves 10 have been increased in the utility model; and guarantee that three sections return lines 4 are connected on three sections inlet non-return valves 10, three sections inlet pipes 8 afterwards; thereby guarantee that reflux gas gets back to three sections entrances through three sections inlet pipes 8; can not flow into booster expansion machine or be back to one section inlet pipe 6, so the stability of three sections Surge Prevention System anti-asthmas of Effective Raise effect.
Claims (1)
1. three of a pressure-increasing machine anti-surge sections return-flow systems comprise two sections backflow anti-surge valves (1), two sections return lines (2), three sections backflow anti-surge valves (3) and three sections return lines (4); Wherein, described two sections return lines (2) connect second stage exit pipeline (5) and one section inlet pipe (6); Two sections backflow anti-surge valves (1) are installed on two sections return lines (2); Second stage exit pipeline (5) also is communicated with booster expansion machine pipeline (7); Described three sections return lines (4) connect three sections outlet conduits (9) and three sections inlet pipes (8); Three sections backflow anti-surge valves (3) are installed on three sections return lines (4); Three sections outlet conduits (9) are also connected to process system; It is characterized in that, described three sections inlet pipes (8) are provided with three sections inlet non-return valves (10), and the tie point of three sections return lines (4) and three sections inlet pipes (8) is positioned at three sections inlet non-return valves (10) afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320178760 CN203248411U (en) | 2013-04-10 | 2013-04-10 | Three-section reverse-flow system used for anti-surge of supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320178760 CN203248411U (en) | 2013-04-10 | 2013-04-10 | Three-section reverse-flow system used for anti-surge of supercharger |
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| Publication Number | Publication Date |
|---|---|
| CN203248411U true CN203248411U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320178760 Expired - Lifetime CN203248411U (en) | 2013-04-10 | 2013-04-10 | Three-section reverse-flow system used for anti-surge of supercharger |
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| CN (1) | CN203248411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443402A (en) * | 2015-11-27 | 2016-03-30 | 安徽六国化工股份有限公司 | Centrifugal ammonia compressor unit with dual-cylinder compression three-section air inlet manner |
| CN110681328A (en) * | 2019-09-02 | 2020-01-14 | 国家能源集团宁夏煤业有限责任公司 | Fischer-Tropsch reactor ESD interlocking control method and control system |
-
2013
- 2013-04-10 CN CN 201320178760 patent/CN203248411U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443402A (en) * | 2015-11-27 | 2016-03-30 | 安徽六国化工股份有限公司 | Centrifugal ammonia compressor unit with dual-cylinder compression three-section air inlet manner |
| CN110681328A (en) * | 2019-09-02 | 2020-01-14 | 国家能源集团宁夏煤业有限责任公司 | Fischer-Tropsch reactor ESD interlocking control method and control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |