CN201787336U - Gas odorization device - Google Patents
Gas odorization device Download PDFInfo
- Publication number
- CN201787336U CN201787336U CN2010205090459U CN201020509045U CN201787336U CN 201787336 U CN201787336 U CN 201787336U CN 2010205090459 U CN2010205090459 U CN 2010205090459U CN 201020509045 U CN201020509045 U CN 201020509045U CN 201787336 U CN201787336 U CN 201787336U
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- gas
- odorant
- combustion gas
- injection unit
- nozzle
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Abstract
The utility model provides a gas odorization device comprising an odorization agent storage unit, an injection unit, a gas pipeline, an odorization agent conveying pipe, a gas signal pipe, a chemical feed injection pipe, a pressure control valve arranged on the odorization agent conveying pipe, and auxiliary devices including a connecting valve and other control valves, wherein the injection unit is used for mixing gas with odorization agent, the gas signal pipe is used for controlling the pressure control valve to control the quantity of the odorization agent according to the gas flow rate, and the chemical feed injection pipe is used for injecting the gas containing the odorization agent into the gas pipeline for gas supply. The gas odorization device is simple in structure, integrates the complicated mechanical equipment with a control system in the prior art into one, and is low in manufacturing cost, high in automation level, convenient to maintain and manage, and low in running cost.
Description
Technical field
The utility model relates to apparatus for making gas ordorous, belongs to making gas ordorous technical field.
Background technique
In the gas supply process,, set off an explosion if gas leakage forms explosive mixture on the one hand easily; Cause easily that on the other hand personnel are poisoned to death, and cause casualties and property loss.Thereby in order in time to find the gas leakage control gas leakage of in time adopting an effective measure, city gas needs alarm to be installed so that according to airborne odor unit alarm combustion gas leak case in supply process usually.The minimum flow of odorant should meet the following provisions in " Code for design of city gas engineering " in the common combustion gas: (1) nontoxic combustion gas is leaked in the air, reaches 20% o'clock of lower explosion limit, should be able in time discover; (2) poisonous combustion gas is leaked to when reaching harmful concentration that human body is allowed in the air and should be able to be discovered, and for example, for being the combustion gas of toxic substance with the carbon monoxide, when carbon monoxide content reached 0.02% (percentage by volume) in the air, alarm should be able to be discovered.
Commonly used making gas ordorous dose of China is tetrahydrothiophene, generally is the regulation according to above-mentioned " Code for design of city gas engineering ", adds a certain amount of odorant in combustion gas, should not be less than 20mg/m such as the amount of adding odorant in rock gas
3Concrete odorizing amount size depends on the flow of combustion gas.
Gas gas consumption in supply process is uneven, be in particular in month, day, the time inhomogeneous on, so gas consumption is always in real-time change, odorizing amount also must change along with the variation of gas quantity like this.Odorant joined needs a cover mechanical device in the gas pipeline, and needs accurately control odorizing amount.Hence one can see that adds smelly system and should comprise machinery and control system, should have corresponding power system simultaneously.And the advance that adds smelly system mainly shows on the levels of precision of control odorizing amount.
Popular device for adding odor is " an Electromagnetic diaphragm metering pump system " at present, and its tradition constitutes metering and adds smelly pump, medicine storing pot, field instrument, sensor, control cabinet and accessory.Its working procedure mainly is: by adding smelly pump odorant is injected gas pipeline, the power that adds smelly pump is provided by electric power, and the control of odorizing amount changes signal by sensor with flow and passes to control system, by control system control pump and related valve, adjusts odorizing amount.
Yet above-mentioned employing adds smelly pump and adds smelly prior art and have following deficiency:
One adds smelly pump and need to consume electric power in running, and operating cost is higher; And the configuration of pump need take one to open one and be equipped with usually, invests bigger.
Its two owing to add smelly pump itself and do not possess the function of automatic adjusting flow, therefore need complete supervisory device so that change the flux signal of combustion gas into open degree that electrical signal is controlled lift of pump and solenoid valve, thereby the control odorizing amount.So not only reaction velocity is slow, and outside control system is also depended in the control of odorizing amount fully.
Its three, add smelly pump and add in the smelly process existing, add the impulsive current of smelly pump receiving control system, make electromagnetic driver energising back produce power.Then, drive in-oil cylinder post match by working shaft and do reciprocal horizontal motion, force the flexible sheet distortion to absorb odorant, this makes film easily aging, causes validity to reduce, even leakage loss, the maintenance rate height.
Summary of the invention
Summary of the invention part of the present utility model does not also mean that key feature and the essential features that will attempt to limit technological scheme required for protection, does not more mean that the protection domain of attempting to determine technological scheme required for protection.
In order to overcome above-mentioned deficiency of the prior art, the utility model provides a kind of apparatus for making gas ordorous, and it carries out mixing of combustion gas and odorant by utilizing the injection unit to substitute to add smelly pump, and controls the odorant amount according to gas flow.The technological scheme that its technical problem that solves the utility model adopts is:
Apparatus for making gas ordorous, comprise: odorant storage element, injection unit, gas pipeline, odorant delivery pipe, combustion gas signal tube, dosing ascending pipe, be arranged on the pressure controlled valve on the odorant delivery pipe, and, comprise the supplementary equipment that connects valve and other control valves.Wherein, odorant in the described odorant storage element enters the inlet of described injection unit through described odorant delivery pipe, described injection unit is used for mixing of combustion gas and described odorant, described combustion gas signal tube one end is connected with described gas pipeline, the other end links to each other with described pressure controlled valve with described injection unit respectively, thereby and control described pressure controlled valve control odorant amount according to gas flow, the combustion gas that described dosing ascending pipe is used for being added with odorant is injected into described gas pipeline in order to gas supply.
Further, described injection unit comprises: nozzle, air-breathing retract chamber, mixing chamber and diffusion chamber, odorant suction port.Described injection unit has automatic control characteristic, and the low-yield gas volume of institute's injection changes along with the variation of high energy gases volume.
The utility model device further comprises following technological scheme:
Described nozzle is made up of fixed component and movable part two-part, and wherein said movable part is a needle type valve bar, and the outlet end contact segment of described needle type valve bar and described nozzle is tapered.
Described combustion gas signal tube is controlled described needle type valve bar, and the fuel gas flow in the described combustion gas signal tube promotes described needle type valve bar and seesaws, and changing the discharge area of described nozzle, thereby changes gas flow by nozzle.
Preferably, described air-breathing retract chamber is to be made of the convergent pipeline, thereby makes when combustion gas sprays at a high speed via described nozzle, forms vacuum or negative pressure at the throat place of described air-breathing retract chamber because of gas is on every side swept away by jet, thereby odorant is sucked.
The beneficial effects of the utility model:
The utility model adopts the injection unit to substitute traditional add smelly pump-unit and add smellyly, and the suction that adds odorant in the smelly process energy suction of flowing of combustion gas and combustion gas itself that places one's entire reliance upon need not exterior power; And odorizing amount depends on gas flow fully, the flow follow-up adjustment.
In addition, the injection unit based on injection principle of the present utility model has the function of regulating odorizing amount automatically along with the gas flow transient change, does not have mechanical moving element and special control system, and reaction velocity is fast, adds smelly validity height.
The utility model device is owing to enlarged the automatic regulation range of injection unit, make that the application area of this device for adding odor is more wide, not only can be used for large-scale urban gate station add smelly, but also can be used for adding of small-sized compressed natural gas supply station or LNG Liquefied natural gas supply station smelly.
Description of drawings
Following accompanying drawing of the present utility model is used to understand the utility model at this as a part of the present utility model.Embodiment of the present utility model and description thereof have been shown in the accompanying drawing, have been used for explaining principle of the present utility model.
Fig. 1 is the structural representation sketch according to apparatus for making gas ordorous of the present utility model;
Fig. 2 is the injection modular construction schematic representation according to a preferred embodiment of the present utility model;
Fig. 3 is the nozzle arrangements schematic representation of injection unit.
Embodiment
In the following description, having provided a large amount of concrete details understands the utility model more completely so that provide.Yet, it will be apparent to one skilled in the art that the utility model can need not one or more these details and implemented.In other example,, be not described for technical characteristicss more well known in the art for fear of obscuring with the utility model.
The utility model utilize the injection unit substitute in the prior art conventional use add smelly pump as device for adding odor, combustion gas is revealed and just can be triggered autoalarm and report to the police automatically in case odorant that will be an amount of adds in the combustion gas.Particularly, injection of the present utility model unit utilizes the low-yield gas of high energy gases injection based on injection principle, thereby reaches the purpose of an amount of odorant of in gas pipeline interpolation.
As shown in Figure 1 according to device for adding odor of the present utility model, comprise: odorant storage element 100, injection unit 200, gas pipeline 300, odorant delivery pipe 400, combustion gas signal tube 500, dosing ascending pipe 600, be arranged on the pressure controlled valve 700 on the odorant delivery pipe 400, and comprise the supplementary equipment that connects valve and other control valves.Wherein, the odorant in the described odorant storage element 100 enters the inlet of described injection unit 200 through described odorant delivery pipe 400.Described injection unit 200 is used for mixing of combustion gas and odorant, described combustion gas signal tube 500 1 ends are connected with described gas pipeline 300, the other end links to each other with pressure controlled valve 700 respectively at described injection unit 200, thereby and controls described pressure controlled valve 700 according to gas flow and control the odorant amounts.The combustion gas that described dosing ascending pipe 600 is used for being added with odorant is injected into described gas pipeline 300 in order to gas supply.
In the preferred embodiment as shown in Figure 2, injection unit 200 comprises: the odorant inlet 205 that nozzle 201, air-breathing retract chamber 202, mixing chamber 203, diffusion chamber 204 and odorant delivery pipe 400 are connected.High-energy gases such as combustion gas enter air-breathing retract chamber 202 by nozzle 201, and low-yield gas such as odorant is inhaled in the air-breathing retract chamber 202, and two kinds of gases enter in the mixing chamber 203 and by air motion through air-breathing retract chamber 202 and mix automatically.High pressure mixed gas by diffusion chamber 204 kinetic energy of mixed gas changed into the pressure energy then, thereby promotes the air pressure of mixed gas in the diffuser pipe 204, so that can be admitted to gas pipeline 300 in order to gas supply by self pressure.
Particularly, in conjunction with Fig. 1 and Fig. 2, combustion gas signal tube 500 is communicated with the nozzle 201 of injection unit 200, thus combustion gas through nozzle 201 injections of injection unit 200 in the air-breathing retract chamber 202 of injection unit 200.Simultaneously, combustion gas signal tube 500 links to each other with pressure controlled valve 700, so that pressure controlled valve 700 can tentatively regulate and control to enter into the odorant dosage of odorant delivery pipe 400.Odorant delivery pipe 400 links to each other with the air-breathing retract chamber 202 of injection unit 200, because when combustion gas sprays at a high speed via nozzle 201, throat A place in air-breathing retract chamber 202 forms vacuum or negative pressure because of gas is on every side swept away by jet, odorant just is inhaled in the suction chamber in the injection unit 200 like this, and even with combustion gas mixing in the mixing chamber of injection unit 200.By the diffusion chamber of injection unit 200, the combustion gas (mixed gas) that is added with odorant is entered into gas pipeline 300 in order to gas supply by dosing ascending pipe 600 then.
In the utility model device, when in the gas pipeline 300 during gas flow generation transient change, the odorant amount of 200 injections in injection unit also can change thereupon, and can keep adding accurately smelly ratio on request.Particularly, the aperture of pressure controlled valve 700 is controlled by gas flow, and when gas flow increased, the gaseous-pressure of the film top in the pressure controlled valve 700 increased, and the drive valve rod moves downward and makes valve port opening increase, and the odorant amount of passing through is also just big; Vice versa.This control mode can be so that odorizing amount satisfies the big drop demand of peak period and ebb period.The odorant adding quantity does not lag behind along with gas flow adjustment is swift in response in the injection unit 200.
As shown in Figure 3, nozzle 201 is made up of fixed component 2011 and movable part 2012 two-part, and wherein movable part 2012 is a needle type valve bar, and this needle type valve bar and nozzle 201 outlet end contact segments are tapered.In conjunction with Fig. 3 and Fig. 1, from combustion gas signal tube 500 these needle type valve bars of control of combustion gas main pipe.Particularly, promote this needle type valve bar by the fuel gas flow in the combustion gas signal tube 500 and seesaw, with discharge area that changes nozzle 201 or the outlet diameter that changes nozzle 201, thereby change is by the gas flow of nozzle.Gas flow varies in size, and the odorant amount of institute's injection is just different.When the gas quantity wave range of combustion gas main pipe is bigger,, thereby accurately control the intake of odorant by this variation of the motor fitness of needle type valve bar.
By the signal tube 500 control needle type valve bar motions of combustion gas main pipe, regulate the gas flow of nozzle 201 outlets, thereby further enlarge the automatic regulation range of injection unit, adapt to the smelly requirement that adds of combustion gas main pipe peak period and ebb period better.If this facility not, the automatic regulation range of injection unit is subjected to the restriction of injection modular construction, and regulation range is very little automatically, can not adapt to the smelly requirement of adding of the big changes in flow rate of combustion gas.
Air-breathing retract chamber 202 is to constitute (as shown in Figure 2) by the convergent pipeline, this convergent pipeline configuration makes when combustion gas sprays at a high speed via nozzle 201, can form vacuum or negative pressure because of gas is on every side swept away by jet at the throat A place of air-breathing collapsible tube 202, thereby odorant is sucked.When in the gas pipeline 300 during gas flow generation transient change, combustion gas can be controlled the motion of needle type valve bar through the flux signal pipe, regulates the diameter of nozzle; Also can regulate the aperture of odorant pressure controlled valve, the flow of control odorant.The odorant amount of 200 injections in injection unit also can change thereupon, and can keep adding accurately smelly ratio on request.This injection unit odorant adding quantity does not lag behind along with gas flow adjustment is swift in response.
In a preferred embodiment, odorant uses tetrahydrothiophene (THT), and THT concentration reaches 0.08mg/m in air
3The time, can reach the warning concentration of 2 grades of odor strengths.
Injection of the present utility model unit 200 is according to the injection principle design, and it utilizes the low-yield gas of high energy gases injection, thereby reaches the purpose that adds low energy gas in high energy gas.And high energy gases is the energy that utilizes high energy gases itself to be had to the injection of low energy gas fully, need not exterior power.Therefore injection of the present utility model unit 200 has automatic control characteristic, and the low-yield gas volume of institute's injection can change along with the variation of high energy gases volume.
The utility model is not limited to the foregoing description, can also make more kinds of variants and modifications according to instruction of the present utility model, and these variants and modifications all drop in the utility model scope required for protection.Protection domain of the present utility model is defined by the appended claims and equivalent scope thereof.
Claims (5)
1. apparatus for making gas ordorous, it is characterized in that, comprise: odorant storage element (100), injection unit (200), gas pipeline (300), odorant delivery pipe (400), combustion gas signal tube (500), dosing ascending pipe (600), be arranged on the pressure controlled valve (700) on the odorant delivery pipe (400), and comprise the supplementary equipment that connects valve and other control valves; Wherein, the odorant in the described odorant storage element (100) enters the inlet of described injection unit (200) through described odorant delivery pipe (400); Described injection unit (200) is used for mixing of combustion gas and described odorant, thereby described combustion gas signal tube (500) is controlled described pressure controlled valve (700) according to gas flow control odorant amount, one end of described combustion gas signal tube (500) is connected with described gas pipeline (300), and the other end links to each other with described pressure controlled valve (700) with described injection unit (200) respectively; The combustion gas that described dosing ascending pipe (600) is used for being added with odorant is injected into described gas pipeline (300) in order to gas supply.
2. apparatus for making gas ordorous according to claim 1 is characterized in that, described injection unit (200) comprising: nozzle (201), air-breathing retract chamber (202), mixing chamber (203) and diffusion chamber (204), odorant suction port (205).
3. apparatus for making gas ordorous according to claim 2 is characterized in that, described nozzle is made up of fixed component and movable part two-part, and wherein said movable part is a needle type valve bar, and the outlet end contact segment of described needle type valve bar and described nozzle is tapered.
4. apparatus for making gas ordorous according to claim 2, it is characterized in that, described combustion gas signal tube is controlled described needle type valve bar, fuel gas flow in the described combustion gas signal tube promotes described needle type valve bar and seesaws, changing the discharge area of described nozzle, thereby change gas flow by nozzle.
5. apparatus for making gas ordorous according to claim 2, it is characterized in that, described air-breathing retract chamber is to be made of the convergent pipeline, thereby make when combustion gas sprays at a high speed via described nozzle, throat place in described air-breathing retract chamber forms vacuum or negative pressure because of gas is on every side swept away by jet, thereby odorant is sucked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205090459U CN201787336U (en) | 2010-08-27 | 2010-08-27 | Gas odorization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205090459U CN201787336U (en) | 2010-08-27 | 2010-08-27 | Gas odorization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787336U true CN201787336U (en) | 2011-04-06 |
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ID=43819298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205090459U Expired - Lifetime CN201787336U (en) | 2010-08-27 | 2010-08-27 | Gas odorization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975337A (en) * | 2010-08-27 | 2011-02-16 | 北京世纪大地燃气有限公司 | Fuel gas odorizing device |
-
2010
- 2010-08-27 CN CN2010205090459U patent/CN201787336U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975337A (en) * | 2010-08-27 | 2011-02-16 | 北京世纪大地燃气有限公司 | Fuel gas odorizing device |
| CN101975337B (en) * | 2010-08-27 | 2013-02-27 | 北京世纪大地燃气有限公司 | Fuel gas odorizing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110406 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |