CN103898260A - Automatic coal gas diffusion device with pressure stabilizing function - Google Patents
Automatic coal gas diffusion device with pressure stabilizing function Download PDFInfo
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- CN103898260A CN103898260A CN201410120130.9A CN201410120130A CN103898260A CN 103898260 A CN103898260 A CN 103898260A CN 201410120130 A CN201410120130 A CN 201410120130A CN 103898260 A CN103898260 A CN 103898260A
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Abstract
The invention relates to a coal gas water-sealed diffusion device with a pressure stabilizing function. The diffusion device comprises a coal gas inlet pipe, a water storage room, a gas discharging room, a diffused coal gas discharging pipe, a purifier, a water sealing pipe, a water sealing throat section, a water draining valve, a water discharging valve, a water feeding valve, a liquid level meter, a lower limit switch and an upper limit switch, wherein the water storage room is arranged at one side of the gas discharging room; the water storage room and the gas discharging room are both designed as confined spaces. According to the automatic diffusion device, a water-sealed diffusion method is adopted, wherein the water sealing room and the gas discharging room are isolated, so that the automatic coal gas diffusion under different pressures is realized by controlling the height of a water level; the diffusion device has the pressure stabilizing function. The diffusion device is not provided with a movable member, so that the service life is long, namely, the diffusion device is superior to a mechanical diffusion valve. The diffusion device is sensitive to a diffusion device of a pipeline gas, so that the safety of a coal gas pipe network is improved. The diffusion device can be used for effectively releasing and stabilizing the pipeline pressure in time so as to prevent the coal gas from being leaked. Thus, the diffusion device is safer in running.
Description
Technical field
The invention belongs to metallurgical gentle body energy technology field, relate to the mode of diffusing of the gaspipe network safe operation of iron and steel enterprise and Fuel Gas Plant, especially a kind of coal gas automatic bleeding device with voltage stabilizing function.
Background technology
Gas bleeding valve is the furnace roof key equipment of blast furnace staying operation, and its performance quality directly affects blast furnace and produces.At present, blast furnace ironmaking operation discharge amount of pollution accounts for the major part of whole steel industry quantity discharged, for meet the requirement of environmental protection, reduce the fault of dust-laden coal gas is diffused, even stopping operation emission coal gas directly diffuses sky, to alleviate environmental pollution, function and the quality of enterprise to gas bleeding valve had higher requirement, and tries one's best and avoid equipment failure.The machinery valve that enterprise's coal gas diffusion uses, all claimed structure is good, and switch is flexible; On sealing means, require to select sealed structure and the sealing material of good seal.Because gas bleeding valve is to work under the environment of high dust, seal badly, Gas Flow is being mingled with dust will wash away its trim, and blow loss and can not working rapidly, can directly affect blast furnace production; There is article in the tracking statistics to domestic many blast furnace gas discharge valves, be no more than 6 months the work-ing life of blast furnace gas discharge valve, what the life-span was the shortest even only has several days, therefore, take different method of design, analyze the reason of machinery valve gas leak, carrying out high-reliability valve development is a urgent task.
Gaspipe network pressure-controlling aspect, in the past, the cut-out mode of coal gas diffusion pipe, mostly be hydrolock, need feedwater and water exhaust system, steel consumption amount is also large, has just changed mechanical type into later, both without water consumption, energy expenditure is also little, but machinery valve is short duration of service, easily leaks gas, fault is many, and maintenance amount is large; The pressure of gas line diffuses control, carrys out Open valve in the past diffuse by manual operation, and speed of response is slow, and coal gas main pipe network pipeline pressure rising speed is fast, may break through the safe pressure relating to, and accident to leak the coal gas occurs, and at present, substantially all changes into automatically controlled.But, running into valve and have a power failure, gas pressure raises, and breaks through the safe pressure of pipe network water seal design along the line, and coal gas accident also will occur.Address the above problem, must carry out automatic relief, and select electrical equipment automatic relief, maintenance is large, when power outage occurs, can not use.Select water seal automatic relief, guarantee safe effective way by being one.
The Automatic Regulation Control of coal gas diffusing device, smelter coal gas system security personnel operation and the key link that reduces bleeding rate, yellow-study can be in " improvement of Bleeding Device of Blast Furnace Gas " literary composition, has introduced the automatic bleeding device that uses water seal and butterfly valve parallel operation.The equipment of pointing out uses water seal to diffuse to have reliable pressure protection time, also talks about the problem that water seal is diffused.During due to blast furnace gas diffusing, flow is large, and flow velocity is high, and surging force is large, and the suggestion providing is that water seal is diffused can only prevent gaspipe network ultra-high voltage time and used, and while normally production, still needs to regulate ductwork pressure by motorized adjustment butterfly valve.Point out, powerful impact air-flow can make water seal that strong vibration occurs and destroy water-sealed equipment simultaneously, and water-level fluctuation is large, when design water seal, should manage buffering, to slow down the impact of high velocity air, and avoids coal gas to leak.
By retrieval, not yet find the patent publication us relevant to patent application of the present invention.
Summary of the invention
The object of the invention is to overcome the weak point for current traditional technology in prior art and various new improvement techniques of prior art, propose a kind of simple and reasonable, practical, easily processing, life-span length, valve turnaround length, good seal performance, safe and reliable, can carry out the novel coal gas automatic bleeding device with voltage stabilizing function that utilizes water seal arrangement that automatic voltage regulation is diffused, this automatic bleeding device can be reused the water in retaining chamber.
The object of the invention is to be achieved through the following technical solutions:
A kind of water seal for coal gas bleeding device with voltage stabilizing function, comprise gas inlet pipe, retaining chamber, exhaust chest, emission coal gas vapor pipe, cleaner, syphon trap, water seal venturi section, water drain valve, water discharge valve, water supply valve, liquidometer, limit switch, upper limit switch, a side of exhaust chest is located in described retaining chamber, and this retaining chamber and exhaust chest are enclosed space;
Top coaxial communication in described exhaust chest is installed an emission coal gas vapor pipe, bottom coaxial communication in this emission coal gas vapor pipe is established a cleaner, the below coaxial communication of this cleaner is installed a syphon trap, the other end of this syphon trap is communicated with installs water seal venturi section, and a water drain valve is installed in the bottom in the exhaust chest of described syphon trap below;
One end communication seals of described gas inlet pipe is installed on a sidewall of retaining chamber, and the other end of gas inlet pipe stretches to below the liquid level of retaining chamber, and the end that stretches into retaining chamber of this gas inlet pipe is shaped with several horizontal thin pipes and vertical thin pipe;
On gas inlet pipe between described horizontal thin pipe and the liquid level of retaining chamber, cross connection is established a water seal venturi section, and the other end of this water seal venturi section is communicated with installs syphon trap;
On the outer side wall of the retaining chamber of described horizontal thin pipe top, establish a water discharge valve with indoor connection of retaining, this water discharge valve is positioned at the below of water seal venturi section, on the outer side wall of the retaining chamber below gas inlet pipe, above the liquid level of retaining chamber, establishes a water supply valve with indoor connection of retaining; One liquidometer is vertically installed on the outdoor sidewall of the retaining between water discharge valve and water supply valve, is closed and limit switch successively in the middle upper end of liquidometer to having open limit, the liquid level water level of this retaining chamber is controlled by water discharge valve and water supply valve.
And described syphon trap or gas inlet pipe are bending-like.
And, the perforate of described horizontal thin pipe side.
And described gas inlet pipe is pipe; Or described emission coal gas vapor pipe is circular pipe.
And, by the shell flange dish of retaining chamber, water seal venturi section and syphon trap are installed together.
And a sewage draining exit is established in the bottom of described retaining chamber.
And described retaining chamber is circular or square.
And the end cross connection of described horizontal thin pipe extends on the outer side wall of retaining chamber, on the outer side wall of retaining chamber, with the end removable seal of horizontal thin pipe, one control flange is installed.
And the gas inlet pipe end of described water seal venturi section is that rectangular configuration, water seal pipe end are hexagonal structure, is venturi section between the gas inlet pipe end of water seal venturi section and water seal pipe end, the cross section of venturi section is rectangle, and venturi section is scaling type structure gradually.
Advantage of the present invention and positively effect are:
1, automatic bleeding device of the present invention adopts water seal releasing method, and water tight compartment and exhaust chest are isolated, by controlling elevation of water surface, realizes the coal gas automatic relief of different pressures, and has voltage stabilizing function.Due to bleeding device no-movable part, long service life, is better than mechanical type diffusion valve; Install sensitively to the stress reaction of pipeline gas, the security that has improved gaspipe network, can carry out pipeline pressure release, voltage stabilizing prevents gas leak, moves safer timely and effectively.
2, automatic bleeding device of the present invention is simple and reasonable, when top main pipeline superpressure, or when pipe network power failure coal gas superpressure, the principle that application coal gas punctures is implemented coal gas diffusion, when ductwork pressure drops to safety value, stops diffusing, realize automatic voltage regulation, principle is simple, practical, and apparatus processing is easy, and maintenance cost is low, water in water seal can reuse, good seal performance, can prevent gas leak effectively, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structure connection diagram of apparatus of the present invention.
Fig. 2 is the schematic diagrams of apparatus of the present invention while diffusing;
Fig. 3 is the structure connection diagram of the water seal venturi section of holder housing ring flange in Fig. 1;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the right view of the gas inlet pipe end in Fig. 3.
Embodiment
As an example of accompanying drawing embodiment example, the invention will be further described below, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of water seal for coal gas bleeding device with voltage stabilizing function, as shown in Figure 1, comprise gas inlet pipe 6, retaining chamber 5, exhaust chest 2, emission coal gas vapor pipe 1, cleaner 3, syphon trap 18, water seal venturi section 14, water drain valve 17, control flange 16, sewage draining exit 13, water discharge valve 11, water supply valve 10, liquidometer 9, limit switch 8, upper limit switch 7, a side of exhaust chest is located in described retaining chamber, and this retaining chamber and exhaust chest are enclosed space.
Innovative point of the present invention is:
Top coaxial communication in described exhaust chest is installed an emission coal gas vapor pipe, bottom coaxial communication in this emission coal gas vapor pipe is established a cleaner, the below coaxial communication of this cleaner is installed a syphon trap, this syphon trap can be bending-like, the other end of this syphon trap is communicated with installs water seal venturi section, and a water drain valve is installed in the bottom in the exhaust chest of described syphon trap below.
One end communication seals of described gas inlet pipe is installed on a sidewall of retaining chamber, the other end of gas inlet pipe stretches to the liquid level of retaining chamber below 4, this gas inlet pipe can be bending-like, the end that stretches into retaining chamber of this gas inlet pipe is shaped with several horizontal thin pipes 15 and vertical thin pipe 12, this horizontal thin pipe and vertical thin pipe can be used for subduing possible water level shock range, the other end of vertical thin pipe is uncovered, be conducive to powdered granule, laterally thin pipe also can side perforate, guarantees that water route is unimpeded; The end of this horizontal thin pipe also can extend on the outer side wall of retaining chamber by cross connection, on the outer side wall of retaining chamber, with the end removable seal of horizontal thin pipe, one control flange is installed, in order to blow down/to clean water inlet pipe.
On gas inlet pipe between described horizontal thin pipe and the liquid level of retaining chamber, cross connection is established a water seal venturi section, the other end of this water seal venturi section is communicated with installs syphon trap, by the shell flange dish 19 of retaining chamber, water seal venturi section and syphon trap is installed together in the present embodiment; As shown in Fig. 3, Fig. 4 and Fig. 5, the gas inlet pipe end 22 of this water seal venturi section is rectangular configuration, is welded on pipeline, and the water seal pipe end 20 of water seal venturi section is hexagonal structure, can welded case ring flange; Between the gas inlet pipe end of water seal venturi section and water seal pipe end, be venturi section 21, the cross section of venturi section is rectangle, and venturi section is scaling type structure gradually.
A sewage draining exit is established in the bottom of described retaining chamber, after the long-time use in retaining chamber, can use these blowdown product to remove the discharge of the addle of powdered granule and cleaning retaining chamber, periodic cleaning encapsulation particle mud oar; On the outer side wall of the retaining chamber of described horizontal thin pipe top, establish a water discharge valve with indoor connection of retaining, this water discharge valve is positioned at the below of water seal venturi section, on the outer side wall of the retaining chamber below gas inlet pipe, above the liquid level of retaining chamber, establishes a water supply valve with indoor connection of retaining; One liquidometer is vertically installed on the outdoor sidewall of the retaining between water discharge valve and water supply valve, in the middle upper end of liquidometer, to having open limit pass and limit switch, (with reference to diagram 1, the installation site of selected upper limit switch and limit switch can be used for determining diffuses pressure successively.The installation site of upper limit switch can up-down adjustment, is used for surveying liquid level, provides signal.First has determined the position of liquid level, and the height that upper limit switch is installed is just fixed, that is to say, liquid level reaches this height, and upper limit switch is action just, provides signal.Liquid level gets according to the required calculation of pressure of diffusing, difference of altitude in water seal venturi section between edge and retaining chamber liquid level, determine to diffuse pressure, for example diffuse during at 4KPa at ductwork pressure, water seal venturi section, edge is counted, required elevation of water surface is 400mm, and upper limit switch just provides signal in this position.As a same reason, the position of limit switch is definite according to the pressure that finishes to diffuse, and for example ductwork pressure requires to stop diffusing in the time of 2.5KPa, and water seal venturi section, along counting, required elevation of water surface is 250mm, and limit switch just provides signal in this position.Specifically how to control the beginning of water supply valve and stop, being realized by known, general controller.The water supply valve entrance of retaining chamber, in a position of water level upper end, has the height of 300mm from liquid level, guarantee that feedwater is unimpeded, and when upper water, water supply valve is opened, and can not cause the fluctuation up and down of liquid level fierceness.The dewatering outlet of water discharge valve picks out some position below retaining chamber, and lower than the level attitude on edge under water seal venturi section, discharging water a little of selection, can be positioned under water seal venturi section along 100mm place, position by interface.Dewatering outlet picks out downwards, is more conducive to draining; This partial content can be prior art), the liquid level water level of this retaining chamber by water discharge valve and water supply valve control (described in the present invention and elevation of water surface, specifically how to add water and discharge water, use ordinary method just can, mechanical system action or solenoid control, there is no special stipulation, can use general solenoid valve, water source is tap water).
The gas inlet pipe of apparatus of the present invention can be pipe; Emission coal gas vapor pipe can be the retaining chamber described in pipe state, can be circular; Retaining chamber involved in the present invention, bottom can be provided with support; Exhaust line interface is the welding of flange and pipeline, conventional structure.
The principle of work of the coal gas automatic bleeding device of band voltage stabilizing function of the present invention is as follows:
The water seal for coal gas bleeding device of band voltage stabilizing function of the present invention, as shown in Figure 2, comprise gas inlet pipe, retaining chamber, exhaust chest, emission coal gas vapor pipe, cleaner, syphon trap, water seal venturi section, water drain valve, control flange, sewage draining exit, water discharge valve etc., the termination of gas inlet pipe is led to below the liquid level of retaining chamber, be connected in horizontal thin pipe, end keeps Inlet and outlet water unimpeded.Syphon trap at exhaust chest is discharged coal gas from certain altitude, and is incorporated into cleaner, eliminates the noise and separates with aqueous vapor, and diffused gas is finally discharged by emission coal gas vapor pipe, and the steam bringing out is pooled to exhaust chest bottom, finally gets rid of by water drain valve.When control flange is used for overhauling, pipe blow-through.Sewage draining exit is for periodic cleaning encapsulation particle mud oar.Because retaining chamber and exhaust chest are isolated, water-in below retaining chamber, also there is certain difference of altitude, below gas can not be leaked to, have the layout of subduing water level concussion, liquid level is not subject to the impact of Exhaust Gas, liquid level stabilizing at the venting initial stage, may be taken a part of liquid out of from water seal venturi section expellant gas, but the height of the liquid level water level of retaining chamber mainly carrys out balancing control by water drain valve and feed water valve, can not affect that to diffuse the control of pressure unbalance.
When reaching in gas inlet pipe while diffusing pressure, water drain valve can be opened, and the liquid level water level of the retaining chamber height that declines, namely stops the elevation of water surface diffusing.Water level in gas inlet pipe reduces, and due to pressure equilibrium problem, venting port is more than water level, and in gas exhaust duct, water is back to the bottom of retaining chamber, and the whole of eliminating are gas, normally diffusing while carrying out superpressure.Schematic diagram when diffusing as shown in Figure 2, has shown the position that liquid level declines.
When the force value of gas inlet pipe reaches while stopping diffusing pressure, follow pressure drop, in gas inlet pipe, water level raises, and approaches the discharge outlet of water seal venturi section, and now, water supply valve is opened water filling, and water level is lifted to normal value.Then stop water filling, liquid level maintains a height, and water seal is worked.When pressure exceedes while diffusing pressure, can again open water drain valve, repeat the process of diffusing.In the present embodiment, use tap water as water seal liquid, approximate 10Pa according to the difference of altitude of the 1mm water surface.Tank level control precision in 5mm, the basic ripple disable of liquid level, pressure controling precision is in 50Pa.
The water seal height of the coal gas automatic bleeding device of band voltage stabilizing function of the present invention can be stable as required ductwork pressure determine, there is no special stipulation, it is the parameter that need to facilitate according to practical situation change, being the basic parameter of traditional water seal arrangement, is 4KPa such as pipe network diffuses pressure, and water seal height will just can be emitted gas below 400mm, water level is higher than 400mm, just sealed, left degree of safety, water level is more high more can not leak gas.
Claims (9)
1. the water seal for coal gas bleeding device with voltage stabilizing function, comprise gas inlet pipe, retaining chamber, exhaust chest, emission coal gas vapor pipe, cleaner, syphon trap, water seal venturi section, water drain valve, water discharge valve, water supply valve, liquidometer, limit switch, upper limit switch, a side of exhaust chest is located in described retaining chamber, this retaining chamber and exhaust chest are enclosed space, it is characterized in that:
Top coaxial communication in described exhaust chest is installed an emission coal gas vapor pipe, bottom coaxial communication in this emission coal gas vapor pipe is established a cleaner, the below coaxial communication of this cleaner is installed a syphon trap, the other end of this syphon trap is communicated with installs water seal venturi section, and a water drain valve is installed in the bottom in the exhaust chest of described syphon trap below;
One end communication seals of described gas inlet pipe is installed on a sidewall of retaining chamber, and the other end of gas inlet pipe stretches to below the liquid level of retaining chamber, and the end that stretches into retaining chamber of this gas inlet pipe is shaped with several horizontal thin pipes and vertical thin pipe;
On gas inlet pipe between described horizontal thin pipe and the liquid level of retaining chamber, cross connection is established a water seal venturi section, and the other end of this water seal venturi section is communicated with installs syphon trap;
On the outer side wall of the retaining chamber of described horizontal thin pipe top, establish a water discharge valve with indoor connection of retaining, this water discharge valve is positioned at the below of water seal venturi section, on the outer side wall of the retaining chamber below gas inlet pipe, above the liquid level of retaining chamber, establishes a water supply valve with indoor connection of retaining; One liquidometer is vertically installed on the outdoor sidewall of the retaining between water discharge valve and water supply valve, is closed and limit switch successively in the middle upper end of liquidometer to having open limit, the liquid level water level of this retaining chamber is controlled by water discharge valve and water supply valve.
2. the water seal for coal gas bleeding device with voltage stabilizing function according to claim 1, is characterized in that: described syphon trap or gas inlet pipe are bending-like.
3. the water seal for coal gas bleeding device with voltage stabilizing function according to claim 1, is characterized in that: the perforate of described horizontal thin pipe side.
4. the water seal for coal gas bleeding device with voltage stabilizing function according to claim 1, is characterized in that: described gas inlet pipe is pipe; Or described emission coal gas vapor pipe is circular pipe.
5. the water seal for coal gas bleeding device with voltage stabilizing function according to claim 1, is characterized in that: the shell flange dish by retaining chamber is installed together water seal venturi section and syphon trap.
6. the water seal for coal gas bleeding device with voltage stabilizing function according to claim 1, is characterized in that: a sewage draining exit is established in the bottom of described retaining chamber.
7. the water seal for coal gas bleeding device with voltage stabilizing function according to claim 1, is characterized in that: described retaining chamber is for circular or square.
8. according to the water seal for coal gas bleeding device with voltage stabilizing function described in claim 1 to 7 any one, it is characterized in that: the end cross connection of described horizontal thin pipe extends on the outer side wall of retaining chamber, on the outer side wall of retaining chamber, with the end removable seal of horizontal thin pipe, one control flange is installed.
9. according to the water seal for coal gas bleeding device with voltage stabilizing function described in claim 1 to 7 any one, it is characterized in that: the gas inlet pipe end of described water seal venturi section is that rectangular configuration, water seal pipe end are hexagonal structure, between the gas inlet pipe end of water seal venturi section and water seal pipe end, it is venturi section, the cross section of venturi section is rectangle, and venturi section is scaling type structure gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120130.9A CN103898260B (en) | 2014-03-27 | 2014-03-27 | A kind of coal gas automatic bleeding device with voltage stabilizing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120130.9A CN103898260B (en) | 2014-03-27 | 2014-03-27 | A kind of coal gas automatic bleeding device with voltage stabilizing function |
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| CN103898260A true CN103898260A (en) | 2014-07-02 |
| CN103898260B CN103898260B (en) | 2015-08-19 |
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| CN201410120130.9A Expired - Fee Related CN103898260B (en) | 2014-03-27 | 2014-03-27 | A kind of coal gas automatic bleeding device with voltage stabilizing function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091348A (en) * | 2017-05-05 | 2017-08-25 | 北京首都机场动力能源有限公司 | A kind of fluid-tight Safety relief valve |
| CN107676631A (en) * | 2017-11-14 | 2018-02-09 | 中车资阳机车有限公司 | A kind of wet-type relief device on high temperature, minute-pressure, filthy gas pipeline |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU438694A1 (en) * | 1973-04-11 | 1974-08-05 | Предприятие П/Я В-8253 | Apparatus for detecting burnout of cooling elements of a blast furnace |
| CN101875988A (en) * | 2010-07-30 | 2010-11-03 | 中冶南方工程技术有限公司 | Pressure-equalizing and discharging process for J-shaped sealing water pipe type blast furnace top |
| CN202746952U (en) * | 2012-08-16 | 2013-02-20 | 汝州市汝丰焦化有限公司 | Automatic diffusing water seal for gas |
| CN203258375U (en) * | 2013-04-18 | 2013-10-30 | 中冶南方工程技术有限公司 | Water seal type gas radiation device |
| CN203820807U (en) * | 2014-03-27 | 2014-09-10 | 安徽航天环境工程有限公司 | Automatic coal gas blow-off device with pressure stabilizing function |
-
2014
- 2014-03-27 CN CN201410120130.9A patent/CN103898260B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091348A (en) * | 2017-05-05 | 2017-08-25 | 北京首都机场动力能源有限公司 | A kind of fluid-tight Safety relief valve |
| CN107676631A (en) * | 2017-11-14 | 2018-02-09 | 中车资阳机车有限公司 | A kind of wet-type relief device on high temperature, minute-pressure, filthy gas pipeline |
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| CN103898260B (en) | 2015-08-19 |
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Effective date of registration: 20161202 Address after: 100074 room No. A, zone, No. 7 Ash Road, Beijing, Fengtai District Patentee after: BEIJING AEROSPACE ENVIRONMENTAL ENGINEERING CO.,LTD. Address before: 243000 Anhui city of Ma'anshan province West Lake Huashan District Garden 69 building 206 room Patentee before: ANHUI AEROSPACE ENVIRONMENTAL ENGINEERING CO.,LTD. |
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Granted publication date: 20150819 |