CN203686580U - Nitrogen supplementing system - Google Patents

Nitrogen supplementing system Download PDF

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Publication number
CN203686580U
CN203686580U CN201320499115.0U CN201320499115U CN203686580U CN 203686580 U CN203686580 U CN 203686580U CN 201320499115 U CN201320499115 U CN 201320499115U CN 203686580 U CN203686580 U CN 203686580U
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CN
China
Prior art keywords
pressure
pipe network
low
nitrogen
pressure pipe
Prior art date
Application number
CN201320499115.0U
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Chinese (zh)
Inventor
凌晨
陈恩军
王凤河
苑桐
赵刘强
李杨
邵文策
李洪池
高剑波
杜阳清
张静
安文刚
杨熠
吴冰
杨光宇
Original Assignee
首钢京唐钢铁联合有限责任公司
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Priority to CN201320499115.0U priority Critical patent/CN203686580U/en
Application granted granted Critical
Publication of CN203686580U publication Critical patent/CN203686580U/en

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Abstract

The utility model discloses a nitrogen supplementing system, which belongs to the technical field of industrial gas supplementing. The nitrogen supplementing system comprises a high-pressure pipe network, a low-pressure pipe network, a first pressure gauge and a second pressure gauge; the first pressure gauge is installed on the high-pressure pipe network; the second pressure gauge is installed on the low-pressure pipe network; the high-pressure pipe network is connected with the low-pressure pipe network through a communication pipeline and a pressure control adjusting valve; an inlet end of the pressure control adjusting valve is connected with the high-pressure pipe network through a communication pipeline, and an outlet end is connected with the low-pressure pipe network through a communication pipeline. The high-pressure nitrogen pipe network is communicated with the low-pressure nitrogen pipe network through the pipeline and the pressure control adjusting valve, so that the high-pressure nitrogen can be supplemented into the low-pressure nitrogen pipe network after being decompressed, the high-pressure nitrogen in the steelmaking production can be effectively utilized, the problem that the low-pressure nitrogen is insufficient can be solved, the increment of the load of an oxygen production machine can be avoided, and the energy waste can be reduced.

Description

Nitrogen replenishment system

Technical field

The utility model relates to industrial gas compensation technique field, particularly a kind of nitrogen replenishment system.

Background technique

Along with the progress of steel industry processing technology, the demand of the kind of Iron And Steel Plant to gas products, pressure, purity all rises to some extent, and wherein high, medium and low voltage oxygen, nitrogen product demand are because of different differing widely of Iron And Steel Plant's actual conditions configuration.As shown in Figure 1, the low-pressure pipe network 2 in the large-scale space division device of steel mill provides the low-pressure nitrogen of need of production.In the time that air separation facility normally moves according to design conditions, there will be low-pressure nitrogen that actual production goes out for the situation that can not meet process for making need of production, at this moment just need to produce more low-pressure nitrogen by raising oxygen unit load, supplement nitrogen use level.But in actual production, have the high pressure nitrogen not used in a large number in high pressure pipe network 1, these high pressure nitrogens can not be utilized conventionally, and can be directly discharged in air, cause the waste of nitrogen resource.Therefore, how unnecessary high pressure nitrogen being combined with producing required low-pressure nitrogen, to meet the requirement of producing required low-pressure nitrogen, is that production technology personnel are contained technical problem to be solved.

Model utility content

Technical problem to be solved in the utility model is to provide a kind of nitrogen deficiency that can be in low-pressure pipe network, nitrogen in high pressure pipe network has residue, to after the nitrogen step-down in high pressure pipe network, supplement to low-pressure pipe network, need not improve oxygenerator load and cause the nitrogen replenishment system of energy waste.

For solving the problems of the technologies described above, the utility model provides a kind of high-pressure and low-pressure nitrogen replenishment system, comprises that high pressure pipe network, low-pressure pipe network, the first pressure takes into account the second pressure meter; Described the first pressure meter is arranged on described high pressure pipe network; Described the second pressure meter is arranged on described low-pressure pipe network; Described high pressure pipe network is connected by connecting pipe, pressure regulating and controlling valve with described low-pressure pipe network; The entry end of described pressure regulating and controlling valve is connected with described high pressure pipe network by described connecting pipe, and outlet end is connected with described low-pressure pipe network by described connecting pipe.

Described nitrogen replenishment system also comprises: safety pressure control gear, described safety pressure control gear is arranged on described low-pressure pipe network.

Described safety pressure control gear comprises atmospheric valve and safety valve; Described atmospheric valve is connected with described low-pressure pipe network, and is arranged between described pressure regulating and controlling valve and described safety valve; Described safety valve is arranged on described low-pressure pipe network (2).

The nitrogen replenishment system that the utility model provides, by pipeline and pressure regulating and controlling valve, high pressure nitrogen pipe network is communicated with low-pressure nitrogen pipe network, thereby will after high pressure nitrogen step-down, supplement into low-pressure nitrogen pipe network, thereby effectively utilize the high pressure nitrogen in STEELMAKING PRODUCTION, make up the problem of low-pressure nitrogen use amount deficiency, avoid the raising of oxygenerator load, reduced energy waste.

Accompanying drawing explanation

Fig. 1 is the distributed architecture schematic diagram of high and low pressure nitrogen pipe network in prior art;

The distribution schematic diagram of the nitrogen replenishment system that Fig. 2 provides for the utility model embodiment.

Embodiment

Referring to Fig. 2, the utility model embodiment provides a kind of nitrogen replenishment system, comprises high pressure pipe network 1, low-pressure pipe network 2, the first pressure meter 5 and the second pressure meter 6.Wherein, the first pressure meter 5 is arranged on high pressure pipe network 1; The second pressure meter 6 is arranged on low-pressure pipe network 2.High pressure pipe network 1 is connected by connecting pipe 4, pressure regulating and controlling valve 3 with low-pressure pipe network 2.The entry end of pressure regulating and controlling valve 3 is connected with high pressure pipe network 1 by connecting pipe 4, and outlet end is connected with low-pressure pipe network 2 by connecting pipe 4, will after the high pressure nitrogen step-down in high pressure pipe network 1, add in low-pressure pipe network 2 thus.

In addition, the utility model embodiment's nitrogen replenishment system also comprises safety pressure control gear, and safety pressure control gear comprises atmospheric valve 7 and safety valve 8.Atmospheric valve 7 is connected with low-pressure pipe network 2, and is arranged between pressure regulating and controlling valve 3 and safety valve 8, for controlling the pressure of low-pressure pipe network 2 nitrogen.It is upper that safety valve 8 is arranged on low-pressure pipe network (2), for guaranteeing the safety of low-pressure pipe network 2.

In concrete production, the design working pressure of low-pressure pipe network 2 is 1Mpa, and the design working pressure of high pressure pipe network 1 is 3Mpa.The model of the pressure regulating and controlling valve 3 of the present embodiment is 3 inch-EP-667-DVC6010-H-WCC that FISHER company of the U.S. produces.In application process, detect the force value in low-pressure pipe network 1 by the second pressure meter 6, detect the force value in high pressure pipe network by the first pressure meter 5.In the time that the second pressure meter 6 detects nitrogen pressure in low-pressure pipe network 2 lower than 0.7 MPa, DCS control system is sent unlatching control signal to pressure regulating and controlling valve 3, the pressure regulating and controlling valve 3 of controlling on connecting pipe 4 is opened, high pressure nitrogen in high pressure pipe network 1 becomes low-pressure nitrogen after excess pressure regulating and controlling valve 3, be admitted in low-pressure pipe network 2, nitrogen in low-pressure pipe network 2 is increased, thus the confession that has guaranteed low-pressure nitrogen in requisition for the pressure stability of low-pressure pipe network 2.In the time that the second pressure meter 6 detects nitrogen pressure value in low-pressure pipe network 2 higher than 0.9 MPa, DCS control system is sent shutdown signal to pressure regulating and controlling valve 3, the pressure regulating and controlling valve 3 of controlling on connecting pipe 4 cuts out, DCS control system is sent opening signal to atmospheric valve 7 simultaneously, controlling atmospheric valve 7 opens, discharge nitrogen and reduce pressure, guarantee the safety of low-pressure pipe network 2.In actual production; when occur that pressure regulating and controlling valve 3 lost efficacy or low-pressure pipe network 2 in the excessive situation of nitrogen pressure time, when the nitrogen pressure value in low-pressure pipe network 2 equals 1Mpa, safety valve 8 take-off pressure releases; thereby protection low-pressure pipe network 2, prevents production accident.

The nitrogen replenishment system that the utility model provides, by pipeline and pressure regulating and controlling valve, high pressure nitrogen pipe network is communicated with low-pressure nitrogen pipe network, thereby will after high pressure nitrogen step-down, supplement into low-pressure nitrogen pipe network, thereby effectively utilize the high pressure nitrogen in STEELMAKING PRODUCTION, make up the problem of low-pressure nitrogen use amount deficiency, avoid the raising of oxygenerator load, reduced energy waste.

It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to example, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims (3)

1. a nitrogen replenishment system, comprises high pressure pipe network (1), low-pressure pipe network (2), the first pressure meter (5) and the second pressure meter (6); Described the first pressure meter (5) is arranged on described high pressure pipe network (1); Described the second pressure meter (6) is arranged on described low-pressure pipe network (2); It is characterized in that, described high pressure pipe network (1) is connected by connecting pipe (4), pressure regulating and controlling valve (3) with described low-pressure pipe network (2); The entry end of described pressure regulating and controlling valve (3) is connected with described high pressure pipe network (1) by described connecting pipe (4), and outlet end is connected with described low-pressure pipe network (2) by described connecting pipe (4).
2. nitrogen replenishment system according to claim 1, is characterized in that, also comprises: safety pressure control gear, described safety pressure control gear is arranged on described low-pressure pipe network (2).
3. nitrogen replenishment system according to claim 2, is characterized in that: described safety pressure control gear comprises atmospheric valve (7) and safety valve (8); Described atmospheric valve (7) is connected with described low-pressure pipe network (2), and is arranged between described pressure regulating and controlling valve (3) and described safety valve (7); Described safety valve (8) is arranged on described low-pressure pipe network (2).
CN201320499115.0U 2013-08-15 2013-08-15 Nitrogen supplementing system CN203686580U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320499115.0U CN203686580U (en) 2013-08-15 2013-08-15 Nitrogen supplementing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320499115.0U CN203686580U (en) 2013-08-15 2013-08-15 Nitrogen supplementing system

Publications (1)

Publication Number Publication Date
CN203686580U true CN203686580U (en) 2014-07-02

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Application Number Title Priority Date Filing Date
CN201320499115.0U CN203686580U (en) 2013-08-15 2013-08-15 Nitrogen supplementing system

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Country Link
CN (1) CN203686580U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106145066A (en) * 2016-08-29 2016-11-23 芜湖新兴铸管有限责任公司 A kind of iron and steel enterprise nitrogen production system
CN106402657A (en) * 2016-06-12 2017-02-15 江苏永钢集团有限公司 Different-pressure gas pipe network intercommunication device
CN109140233A (en) * 2018-09-30 2019-01-04 四川德胜集团钒钛有限公司 The decompression of a kind of pair of gas handles supply technique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106402657A (en) * 2016-06-12 2017-02-15 江苏永钢集团有限公司 Different-pressure gas pipe network intercommunication device
CN106402657B (en) * 2016-06-12 2018-05-15 江苏永钢集团有限公司 Different pressure gas pipeline network interworking unit
CN106145066A (en) * 2016-08-29 2016-11-23 芜湖新兴铸管有限责任公司 A kind of iron and steel enterprise nitrogen production system
CN109140233A (en) * 2018-09-30 2019-01-04 四川德胜集团钒钛有限公司 The decompression of a kind of pair of gas handles supply technique

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