CN111076560B - Raw gas waste heat recovery system - Google Patents
Raw gas waste heat recovery system Download PDFInfo
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- CN111076560B CN111076560B CN202010017873.9A CN202010017873A CN111076560B CN 111076560 B CN111076560 B CN 111076560B CN 202010017873 A CN202010017873 A CN 202010017873A CN 111076560 B CN111076560 B CN 111076560B
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- 239000007789 gas Substances 0.000 title claims abstract description 66
- 238000011084 recovery Methods 0.000 title claims abstract description 39
- 239000002918 waste heat Substances 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 150
- 230000005540 biological transmission Effects 0.000 claims abstract description 125
- 230000007246 mechanism Effects 0.000 claims abstract description 70
- 230000000630 rising effect Effects 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 19
- 230000001174 ascending effect Effects 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 6
- 238000004880 explosion Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000000571 coke Substances 0.000 description 41
- 238000000034 method Methods 0.000 description 27
- 230000008859 change Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000000737 periodic effect Effects 0.000 description 10
- 239000003245 coal Substances 0.000 description 8
- 238000012546 transfer Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000004939 coking Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000000197 pyrolysis Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
- C10B41/08—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for the withdrawal of the distillation gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to a raw gas waste heat recovery system, which comprises a rising pipe assembly and a pipeline for conveying heat exchange working media, wherein the rising pipe assembly comprises a rising pipe with a heat exchange function, a three-way bridge pipe and a water seal part arranged at the upper part of the three-way bridge pipe, the water seal part comprises a base body and a water seal cover, the base body is fixed on the three-way bridge pipe, the base body is provided with a water seal, the water seal cover is movably connected with the base body and is used for sealing the water seal, and the heat exchange working media exchange heat with the raw gas in the rising pipe; the pipeline is provided with a valve, the transmission device is respectively connected with the water seal cover and a closing executing mechanism of the valve, and when the water seal cover is exploded, the transmission device is driven to act and the valve is driven to be synchronously closed by the transmission device; the raw gas waste heat recovery system provided by the invention has high reliability and good stability, not only can realize water leakage detection, but also can effectively avoid and solve the problems existing in the prior art, and is beneficial to long-term stable and safe operation of the system.
Description
Technical Field
The invention relates to the technical field of thermal energy conservation (boilers), in particular to a raw gas waste heat recovery system, which is particularly suitable for bias flow control of heat exchange media in a coke oven raw gas waste heat recovery system and automatic protection of a coke oven.
Background
In the coking process, coking coal is thermally distilled in a coke oven to generate coke by isolating air, and a large amount of raw coke gas is generated, wherein the coke oven is generally formed by a plurality of dry distillation chambers (hearths) in parallel, each hearth is generally provided with one or two ascending pipes so as to discharge the raw coke gas out of the hearth, the temperature of the raw coke gas is higher (generally up to 850 ℃), and the heat of the raw coke gas accounts for about 36% of the heat of the coke oven, so that the raw coke gas has extremely high recycling value; in the traditional process, the raw coke oven gas is usually sent to a bridge pipe through a rising pipe, and after being rapidly cooled, the raw coke oven gas is sent to a gas collecting pipe, so that a large amount of high-pressure ammonia water is consumed in the cooling process of the raw coke oven gas, and the high-quality heat of the raw coke oven gas is wasted; in order to recover and utilize sensible heat brought out by raw coke oven gas, a rising pipe with a waste heat recovery function (i.e., a rising pipe of a waste heat recovery heat exchanger) is increasingly paid attention to and developed, and has been widely used for waste heat recovery of raw coke oven gas.
In recent years, various structures of rising pipes of waste heat recovery heat exchangers have been developed at home and abroad, and typical structures include a jacket type, a jacket and coil type (such as a rising pipe waste heat recovery device of a coke oven disclosed in Chinese patent ZL 201410051124.2), an internal plug-in type (such as a rising pipe waste heat plug-in type temperature control thermal expansion removal Jiao Reguan export method and device disclosed in Chinese patent ZL 201410309838.9), a spiral coil type and the like; although the existing waste heat recovery heat exchanger ascending pipe has a waste heat recovery function, waste heat in raw coke oven gas can be effectively recovered, in the actual use process, the waste heat recovery heat exchanger ascending pipe is easy to cause a water leakage problem (namely a leakage problem of a heat exchange working medium), a hearth is not allowed to enter water in the life cycle of the coke oven production process, and once the hearth enters water, the hearth is damaged, great loss is caused, and hidden danger is brought to safety production; therefore, in order to prevent the water leakage problem possibly occurring in the rising pipe of the waste heat recovery heat exchanger,
The first existing method is: the double-layer rising pipe inner wall structure is adopted to increase the safety coefficient, but the method can cause high-temperature corrosion damage to jacket metal after the inner cylinder is damaged, and in fact, the method is only a failure delay method, the risk of water inflow of a hearth exists, and the coke oven cannot be effectively protected;
The second existing method is: the temperature of the raw gas at the outlet of the rising pipe is monitored in real time by using an instrument, and the supply (or circulation) of the heat exchange working medium is cut off according to the temperature control; because the temperature in and around the coke oven is high, the instrument wire is easy to burn out and lose efficacy in the environment, so that the monitored is invalid, and the coke oven cannot be effectively protected;
The third existing method is: monitoring the pressure of raw gas in the rising pipe, and controlling whether to cut off the supply (or circulation) of the heat exchange working medium according to the change of the raw gas pressure; for example, a serial double-element protection raw gas waste heat recovery heat exchanger ascending pipe disclosed in chinese patent CN 201910916347.3, a heat exchange medium flow automatic protection raw gas waste heat recovery heat exchanger ascending pipe disclosed in chinese patent CN 201910916370.2, a raw gas waste heat recovery heat exchanger ascending pipe and a control method thereof disclosed in chinese patent CN 20190916355.8, a heat exchange medium flow self-balancing raw gas waste heat recovery heat exchanger ascending pipe disclosed in chinese patent CN 201910916610.9 and the like are provided with a pressure guiding pipe and a pressure sensor in the ascending pipe so as to monitor the pressure of raw gas, and the supply (or circulation) of a heat exchange working medium is cut off according to whether the pressure control is performed or not; however, in the actual use process, raw gas in the rising pipe is easy to coke, if coking occurs at the pipe orifice of the pressure guiding pipe, the pressure guiding pipe can be disabled, so that the control is disabled, and the purpose of protecting the coke oven can not be achieved.
In summary, in the prior art, the reliability of the method and means for solving the problem of water leakage of the riser of the heat recovery heat exchanger is low, and improvement is needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a raw gas waste heat recovery system which is high in reliability and good in stability, can realize water leakage detection, can effectively avoid and solve the problems in the prior art, and is beneficial to long-term stable and safe operation of the system.
The technical scheme adopted by the invention is as follows:
The system comprises a rising pipe assembly and a pipeline for conveying heat exchange working media, wherein the rising pipe assembly comprises a rising pipe with a heat exchange function, a three-way bridge pipe communicated with the rising pipe and a water seal part arranged at the upper part of the three-way bridge pipe, the water seal part comprises a base body and a water seal cover, the base body is fixed on the three-way bridge pipe, the base body is provided with a water seal, the water seal cover is movably connected with the base body and is used for sealing the water seal opening, and the heat exchange working media exchange heat with the raw gas in the rising pipe; the water seal cover is characterized by further comprising a transmission device, the pipeline is provided with a valve, the transmission device is respectively connected with the water seal cover and a closing execution mechanism of the valve, and when the water seal cover is exploded, the transmission device is driven to act and the valve is driven to be synchronously closed through the transmission device. In this scheme, adopt mechanical transmission device to monitor that the water seal lid is/does not explode to synchronous linkage when the water seal lid explodes, make the valve close in step, cut off the transport of heat transfer working medium, on the one hand, with effectively realizing leaking the detection, and carry out the action of closing by oneself when leaking, prevent the entering tedge of more heat transfer working medium inside, reach the purpose of protection furnace, coke oven, on the other hand, adopt this scheme to monitor the reliability that leaks high, stability is good, can effectively avoid and solve the problem that prior art exists, be favorable to long-term stable, the safe operation of system.
Further, the transmission device comprises a connecting part and a power transmission part, wherein the connecting part is used for connecting the water seal cover, the connecting part is connected with the power transmission part, the connecting part is used for detachably connecting the water seal cover, and the power transmission part is used for transmitting power generated by explosion of the water seal cover. The power transmission part is used for transmitting power generated by the explosion of the water seal cover to the valve so as to drive the valve to act, so that the valve can be automatically and synchronously closed, and the aim of cutting off the heat exchange working medium is fulfilled; the detachable connection mode is adopted, so that the transmission device and the water seal cover are conveniently connected into a whole, and the transmission device is conveniently separated from the water seal cover, so that the water seal cover is manually opened.
Preferably, the power transmission part can be one or a combination of a plurality of transmission rods, transmission lines, transmission levers, gear transmission mechanisms, chain transmission mechanisms, belt transmission mechanisms, worm and gear transmission mechanisms or screw rod transmission mechanisms. By adopting the power transmission part, not only can transmission be performed, but also the heat resistance is certain, the heat resistance is not damaged under the action of flame emitted from the furnace top, the stability is high, and the performance is reliable.
Preferably, the transmission line comprises a shell and a wire core sleeved in the shell, two ends of the wire core are respectively connected with the connecting part and the closing executing mechanism of the valve, one end of the shell is fixed on the valve, the other end of the shell is fixed on the seat body or the three-way bridge pipe, and the wire core transmits power through moving and/or rotating relative to the shell. The driving line is adopted for driving, so that the device is suitable for ascending pipes and valves with various position relations, has good universality and is low in cost.
Preferably, the shell is of a stainless steel compressible hose structure, and the wire core is of a stainless steel soft rope structure. The wire core may preferably be steel wire.
In order to separate the connecting part from the water seal cover in advance when the water seal cover is opened manually, the water seal cover is preferably further provided with a unhooking shifting fork, wherein the connecting part comprises a rotating shaft and a hook, and the rotating shaft is fixed at one end of the hook and is movably connected with the power transmission part; under the condition that the water seal cover is closed, the rotating shaft is positioned in a clamping groove, the hook hooks the water seal cover, the unhooking shifting fork is hinged to the seat body, one end of the unhooking shifting fork is positioned below the hook, and the other end of the unhooking shifting fork is movably connected with a pull rod; when the water seal cover is opened manually, the pull rod is pulled to drive the unhooking shifting fork to rotate and upwards squeeze the hook, and the hook rotates around the clamping groove under the action of the squeezing force and is separated from the water seal cover; when the water seal cover is exploded, the water seal cover drives the hook to synchronously act, and the rotating shaft is separated from the clamping groove. By adopting the scheme, the connecting part is convenient to separate from the water seal cover so as to manually open the water seal cover, and the transmission device is convenient to transmit the power for the water seal cover to burst so as to synchronously drive the valve to close.
In order to facilitate manual opening of the water seal cover, further, a stop block is sleeved outside the pull rod and is connected with a handle of the water seal cover through a connecting rope; when the hook is separated from the water seal cover, one end of the unhooking shifting fork is contacted with the stop block and presses the stop block downwards, and the pressure born by the stop block is transmitted to the handle through the connecting rope to drive the water seal cover to be opened. In the scheme, the hook is convenient to separate from the water seal cover, and the water seal cover is convenient to open manually.
In order to amplify the power transmitted by the power transmission part, so that the valve can be automatically closed under the action of the power, the transmission device further comprises a power amplification mechanism, and the power amplification mechanism is arranged between the power transmission part and a closing actuating mechanism of the valve and is used for amplifying the transmitted power.
Preferably, the power amplification mechanism comprises a lever, the lever is hinged to the valve body of the valve, one end of the lever is connected with the power transmission part, and the other end of the lever is connected with the closing executing mechanism in the valve. The lever is utilized to realize the amplifying function of the transmitted power, which is more beneficial to driving the closing actuating mechanism to act, achieves the purpose of closing the valve and is beneficial to increasing the reliability.
In order to lock the valve after the valve is closed, the transmission device further comprises a locking mechanism, wherein the locking mechanism is arranged between the power transmission part and the closing actuating mechanism of the valve and is used for locking the closing actuating mechanism of the valve after the valve is closed. The purpose of self-locking is achieved, and the valve is prevented from being automatically opened.
Preferably, the transmission device further comprises a locking mechanism, the locking mechanism comprises a limit baffle, a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the valve body or the limit baffle or the bracket, the other end of the first connecting rod is hinged to the second connecting rod, the other end of the second connecting rod is hinged to the lever, and the power transmission part is connected with the first connecting rod, the second connecting rod or a hinge post between the first connecting rod and the second connecting rod; in the state that the valve is not closed, the included angle between the first connecting rod and the second connecting rod is smaller than 180 degrees; when the water seal cover is exploded, the transmission device drives the first connecting rod and the second connecting rod to move to the positions which are mutually collinear, and drives the lever to rotate, and the limit baffle keeps the first connecting rod and the second connecting rod in a collinear state by limiting the continuous movement of the first connecting rod and the second connecting rod. When the first connecting rod and the second connecting rod are in a collinear state and are just in a dead point position, the first connecting rod and the second connecting rod are not easy to continue to act, so that the lever does not act any more, and a closing executing mechanism in the valve is in a closing state, and the purpose of locking is achieved.
In one scheme, the valve comprises a valve body, a closing execution mechanism and two communication ports, wherein a first chamber is arranged in the valve body, a partition part is arranged in the first chamber and used for dividing the first chamber into two cavities, the two communication ports are respectively communicated with the two cavities, the partition part is provided with a valve port, and the communication ports are respectively connected with the pipeline;
The closing actuating mechanism comprises a valve rod and a spring, one end of the valve rod is hinged with the lever, the other end of the valve rod extends into the first chamber and is provided with a valve core, the valve core is matched with the valve port and used for adjusting the opening of the valve port, one end of the spring is fixed on the valve body, the other end of the spring is connected with the valve rod through an adjusting block, and the adjusting block is used for adjusting the elastic force of the spring. Under normal operation state, the valve core breaks away from the valve port under the action of the elastic force of the spring, so that the valve port is in an open state, when the water seal cover is exploded and drives the power transmission part to act, the lever rotates and overcomes the elastic force of the spring to press down the valve rod, so that the valve core can press down the valve port, thereby closing the valve port, achieving the purpose of closing the valve in a linkage way, and when the valve is closed, the locking mechanism is in a locking state, so that the valve cannot be opened by itself.
In order to solve the problem of periodical bias flow of the heat exchange working medium, the heat exchange working medium and raw gas in the rising pipe are better controlled to exchange heat, in another scheme, the valve is a balance valve, the balance valve comprises a valve body, a closing executing mechanism, two communication ports and two pressure leading ports, a first chamber and a second chamber are arranged in the valve body, the rising pipe is provided with a heat exchange working medium inlet and a heat exchange working medium outlet, wherein,
A separation part is arranged in the first chamber and used for separating the first chamber into two cavities, the two communication ports are respectively communicated with the two cavities, the separation part is provided with a valve port, and the communication ports are respectively connected with the pipeline;
The second chamber is internally provided with a movable separation part, the movable separation part separates the second chamber into two independent inner cavities, and the pressure guiding ports are respectively communicated with the two inner cavities and are respectively communicated with the heat exchange working medium inlet and the heat exchange working medium outlet through pressure guiding pipes;
The closing actuating mechanism comprises a valve rod and a spring, one end of the valve rod is connected with the movable separation part, the other end of the valve rod is provided with a valve core, the valve core is matched with the valve port and used for adjusting the opening of the valve port, one end of the spring is fixed on the valve body, the other end of the spring is connected with the valve rod through an adjusting block, and the adjusting block is used for adjusting the elastic force of the spring. In the scheme, the balance valve has three action points, wherein the first action point is when the operation is started (namely when the heat exchange is started), the balance valve is opened, and the opening of the balance valve corresponds to the basic flow of the fluid flow control; the second action is that in the actual running process, the periodic change of raw coke oven gas is caused along with the periodic change of raw coke oven gas generated by coke oven coal charging, carbonization and coke pushing to coal charging, so that the periodic change of evaporation capacity in the rising pipe is caused, and the balance valve can automatically adjust the position of the movable separation part according to pressure difference, so that the opening of the valve port is effectively adjusted, the flow of the heat transfer working medium is relatively stable, and the periodic bias flow problem of the heat transfer working medium caused by the periodic pressure change in the rising pipe is avoided, namely, the bias flow problem can be effectively solved (reverse deviation correction is realized) by using the balance valve; the third action is that when water leakage occurs, the pressure in the rising pipe rises sharply, so that the water seal cover is suddenly exploded (opened), and the transmission device is driven to act, so that the balance valve is driven to be synchronously closed, and the water leakage automatic closing function is realized.
Under the condition that the water seal cover is exploded, in order to prevent the gas in the gas collecting tube from flowing backwards, in a further scheme, the gas collecting tube further comprises a linkage part, the ascending tube assembly further comprises a connecting pipeline, the connecting pipeline is communicated with the three-way bridge tube, the connecting pipeline is provided with a flap butterfly valve, the linkage part comprises a linkage rod and a transmission piece, one end of the transmission piece is connected with the connecting part or the power transmission part, the other end of the transmission piece is connected with one end of the linkage rod, the linkage rod is hinged to the three-way bridge tube or the seat body, and the other end of the linkage rod is arranged on one side of a switch handle of the flap butterfly valve; when the water seal cover is exploded, the transmission piece and the power transmission part synchronously act and drive the linkage rod to rotate, and the linkage rod drives the switch handle of the flap butterfly valve to rotate through rotation, so that the flap butterfly valve is synchronously driven to be closed. Therefore, under the condition of water leakage, the valve (balance valve) and the flap butterfly valve on the pipeline for conveying the heat exchange working medium can be synchronously closed through linkage.
Compared with the prior art, the raw gas waste heat recovery system provided by the invention has the following beneficial effects:
1. the system has high reliability and good stability in monitoring water leakage, can effectively avoid and solve the problems existing in the prior art, and is beneficial to long-term stable and safe operation of the system.
2. The system can automatically close the valve when the water seal cover is exploded, prevent more heat exchange working media from entering the rising pipe, achieve the purpose of protecting a hearth and a coke oven, and is convenient for manually opening the water seal cover without influencing the normal operation of the system.
3. The system can automatically lock the valve after the valve is closed, so that the stability is improved.
4. The system can effectively adjust the opening of the valve port in the actual operation process, so that the flow of the heat transfer working medium is relatively stable, the periodic bias flow problem of the heat transfer working medium caused by the periodic pressure change in the rising pipe is avoided, and the bias flow problem can be effectively solved.
5. The system can synchronously close the valve (balance valve) and the flap butterfly valve on the pipeline for conveying the heat exchange working medium through linkage under the condition of water leakage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a conventional raw gas waste heat recovery system.
Fig. 2 is a schematic structural diagram of a raw gas waste heat recovery system provided in embodiment 1 of the present invention.
Fig. 3 is an enlarged partial schematic view of fig. 2.
Fig. 4 is a schematic structural diagram of a valve in the raw gas waste heat recovery system provided in embodiment 1 of the present invention.
Fig. 5 is a schematic diagram of a locked part of the raw gas waste heat recovery system provided in embodiment 1 of the present invention.
Fig. 6 is a schematic diagram of a partial structure of a raw gas waste heat recovery system provided in embodiment 2 of the present invention.
Fig. 7 is a schematic structural diagram of a valve in the raw gas waste heat recovery system provided in embodiment 2 of the present invention.
Fig. 8 is a schematic diagram of a partial structure of a raw gas waste heat recovery system provided in embodiment 3 of the present invention.
Description of the drawings
Riser 101, three-way bridge tube 102, base 103, water seal cover 104, hinge post 105, handle 106, heat exchange medium inlet 107, heat exchange medium outlet 108, pipeline 109, pressure guiding tube 110, connecting pipeline 111,
Hook 201, rotating shaft 202, clamping groove 203, wire core 204, shell 205,
Unhooking fork 301, pull rod 302, stop 303, connecting rope 304, first link 305, second link 306, limit stop 307, lever 308, bar hole 309, pin 310,
Valve 400, valve body 401, first chamber 402, partition 403, valve port 404, communication port 405, second chamber 406, movable partition 407, pressure introduction port 408, valve stem 409, valve element 410, spring 411, adjustment block 412,
The butterfly valve comprises a flap butterfly valve 500, a switch handle 501, a linkage rod 502, a transmission part 503, a rotating shaft 504, a reset spring 505 and a limiting block 506.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
Example 1
Referring to fig. 1-5, in this embodiment, an automatic control system for a coke oven is provided, including a riser assembly and a pipeline 109 for conveying heat exchange medium, where the riser assembly includes a riser 101 with a heat exchange function, a three-way bridge pipe 102 communicated with the riser 101, and a water seal portion disposed at an upper portion of the three-way bridge pipe 102, where the water seal portion includes a base 103 and a water seal cover 104, the base 103 is fixed to the three-way bridge pipe 102, the base 103 is provided with a water seal, the water seal is communicated with the three-way bridge pipe 102, and the water seal cover 104 is movably connected to the base 103, for example, may be hinged to the base 103 by a hinge post 105, as shown in fig. 1, and is used for sealing the water seal port;
in this embodiment, the rising pipe 101 with the heat exchange function may be a rising pipe 101 of a heat recovery heat exchanger commonly used in the prior art, the rising pipe 101 is provided with a heat exchange medium inlet 107 and a heat exchange medium outlet 108, as shown in fig. 1 and fig. 2, so as to realize heat exchange between the heat exchange medium and raw gas in the rising pipe 101, and the specific internal structure of the rising pipe 101 may refer to related patents disclosed in the background art, which are not illustrated one by one;
it may be appreciated that, for preheating the recovered raw gas, the apparatus further includes a steam drum, a circulation pump, etc., where the steam drum is connected to the heat exchange medium inlet 107 and the heat exchange medium outlet 108 through the pipes 109, respectively, and the circulation pump is disposed in the pipes 109 for providing conveying power, which is not described herein again.
In this embodiment, the three-way bridge pipe 102 and the water seal portion are both conventional technologies, as shown in fig. 1, and will not be described again here.
In the system provided in this embodiment, the system further includes a transmission device, where the pipeline 109 is provided with a valve 400, and the transmission device is connected to the water seal cover 104 and a closing executing mechanism of the valve 400 respectively; when the rising pipe 101 is in a normal working state, the water seal cover 104 is in a closed state, and the heat exchange working medium and raw gas exchange heat at the rising pipe 101 so as to recover heat energy; when the rising pipe 101 leaks, because the temperature in the rising pipe 101 is very high, the heat exchange working medium (such as water and the like) leaked into the rising pipe 101 is instantaneously vaporized, so that the pressure in the rising pipe 101 is increased, the water seal cover 104 is exploded, the transmission device is driven to act when the water seal cover 104 is exploded, and power is transmitted through the transmission device, so that the valve 400 is driven to be synchronously closed; in this embodiment, the mechanical transmission device is used to monitor and transmit whether the water seal cover 104 is opened or not, and the valve 400 is synchronously closed by synchronous linkage when the water seal cover 104 is opened, so that on one hand, water leakage detection is effectively realized, and on the other hand, closing action is automatically executed when water leakage occurs, so as to prevent more heat exchange working medium from entering the ascending tube 101, thereby achieving the purpose of protecting a hearth and a coke oven.
In a further aspect, the transmission device includes a connection portion for connecting the water seal cover 104, and a power transmission portion, where the connection portion is connected to the power transmission portion, the connection portion is used for detachably connecting the water seal cover 104, and the power transmission portion is used for transmitting power generated by explosion of the water seal cover 104. That is, in this embodiment, the power transmission part is configured to transmit the power generated by the explosion of the water seal cover 104 to the valve 400, so as to drive the valve 400 to act, so that the valve 400 can be automatically and synchronously closed, thereby achieving the purpose of cutting off the heat exchange medium; the detachable connection mode is adopted, so that the transmission device and the water seal cover 104 are conveniently connected into a whole, and the transmission device is conveniently separated from the water seal cover 104 when the water seal cover 104 needs to be manually opened, so that the water seal cover 104 can be manually opened.
It should be understood that the connection portion may have various embodiments, and may be only required to connect with the water seal cover 104, preferably, the connection portion may be a hook 201, a connection ring, a latch, etc., and any connection portion may be detachably connected with the water seal cover 104, which is not illustrated one by one.
It will be appreciated that the power transmission part can have various embodiments, and only needs to have certain heat resistance, and can not be damaged under the action of flame emitted from the furnace roof, and preferably, the power transmission part can be one or a combination of a plurality of transmission rods, transmission lines, transmission levers 308, gear transmission mechanisms, chain transmission mechanisms, belt transmission mechanisms, worm and gear transmission mechanisms or screw transmission mechanisms; in the practical application process, the structure of the power transmission part may be determined according to the positional relationship between the water seal cover 104 and the valve 400, where the universality is better, and the cost is lower, and as an example, as shown in fig. 2 and 3, a transmission line is adopted, where the transmission line includes a housing 205 and a wire core 204 sleeved in the housing 205, two ends of the wire core 204 are respectively connected with the connection part and the closing executing mechanism of the valve 400, one end of the housing 205 is fixed to the valve 400 (such as a valve body 401 fixed to the valve 400), the other end is fixed to the base 103 or the three-way bridge pipe 102, and the wire core 204 is capable of transmitting power by moving and/or rotating relative to the housing 205, that is, the wire core 204 can move relative to the housing 205; it will be appreciated that, to be resistant to high temperatures, the wire core 204 and the housing 205 may be made of metal materials, such as steel pipe for the housing 205, steel wire for the wire core 204, etc., and as an example, a stainless steel compressible hose structure is used for the housing 205, and the wire core 204 is a stainless steel soft rope structure. The wire core 204 is used for transmitting pushing, pulling or rotating power and the like under the driving of the water seal cover 104 so as to synchronously drive the valve 400 to be closed.
In order to separate the connecting part from the water seal cover 104 in advance when the water seal cover 104 is opened manually, in a preferred scheme, the water seal cover further comprises a unhooking shifting fork 301, the connecting part comprises a rotating shaft 202 and a hook 201, and the rotating shaft 202 is fixed at one end of the hook 201 and is movably connected with the power transmission part; when the water seal cover 104 is closed, the rotating shaft 202 is located in a clamping groove 203, the hook 201 hooks the water seal cover 104, the unhooking fork 301 is hinged to the base 103, one end of the unhooking fork 301 is located below the hook 201, and the other end is movably connected with a pull rod 302, as shown in fig. 2 and 3; when the water seal cover 104 needs to be opened manually, the pull rod 302 is pulled to drive the unhooking shifting fork 301 to rotate and press the hook 201 upwards, at this time, the clamping groove 203 plays a constraint role on the hook 201, so that the hook 201 can only rotate around the clamping groove 203 under the action of the pressing force and is separated from the water seal cover 104, and the transmission device is disconnected from the water seal cover 104, so that the water seal cover 104 is opened manually (at this time, the valve 400 is not closed); when the water seal cover 104 is exploded, the water seal cover 104 can drive the hook 201 to synchronously act, and the rotating shaft 202 is separated from the clamping groove 203, so that the transmission device can synchronously drive the valve 400 to be closed.
It is understood that the clamping groove 203 may be disposed on the base 103 or the three-way bridge 102, or the clamping groove 203 may be disposed on a support plate, and the support plate is fixed on the base 103 or the three-way bridge 102.
It can be appreciated that, in this embodiment, in order to make the hook 201 stably and firmly hook the water seal cover 104, further, a gravity block is further hung on the hook 201 at a position deviated from the center of gravity and close to the water seal cover 104, and the gravity block is used to provide a pressing force, so that the hook 201 can be stably and firmly connected with the water seal cover 104 into a whole for synchronous action.
In order to facilitate the manual opening of the water seal cover 104, in a further scheme, a stop 303 is sleeved outside the pull rod 302, and the stop 303 is connected with the handle 106 of the water seal cover 104 through a connecting rope 304, as shown in fig. 2; when the hook 201 is separated from the water sealing cover 104, one end of the unhooking shifting fork 301 can contact with the stop block 303, and press the stop block 303 downwards under the action of external force, and the pressure born by the stop block 303 is transmitted to the handle 106 through the connecting rope 304, so as to drive the water sealing cover 104 to open. By adopting the structural design, in the actual operation process, when the water seal cover 104 is required to be opened manually, a worker only needs to pull the pull rod 302 downwards, and under the drive of the pull rod 302, the unhooking shifting fork 301 can drive the transmission device to be disconnected with the water seal cover 104, and then the water seal cover 104 can be driven to be opened, so that the process of opening the water seal cover 104 is more convenient, and heat exchange between a heat exchange working medium and raw gas can not be influenced.
In order to amplify the power transmitted by the power transmission part, so that the valve 400 can be automatically closed under the action of the power, in a further scheme, the transmission device further comprises a power amplification mechanism, wherein the power amplification mechanism is arranged between the power transmission part and a closing actuating mechanism of the valve 400 and is used for amplifying the transmitted power; various embodiments of the power amplification mechanism are disclosed, and the power amplification mechanism includes, as an example, a lever 308, where the lever 308 is hinged to a valve body 401 of the valve 400, and one end of the lever 308 is connected to the power transmission part, and the other end is connected to a closing actuator in the valve 400, so as to form the power amplification mechanism of the lever 308; the lever 308 is used for amplifying the transmitted power, which is more beneficial to driving the closing actuator to act, achieving the purpose of closing the valve 400 and being beneficial to increasing the reliability.
In order to lock the valve 400 after the valve 400 is closed, and prevent the valve 400 from being automatically opened, in a further scheme, the transmission device further comprises a locking mechanism, wherein the locking mechanism is arranged between the power transmission part and the closing actuating mechanism of the valve 400 and is used for locking the closing actuating mechanism of the valve 400 after the valve 400 is closed; as an example, as shown in fig. 4 and 5, the locking mechanism includes a limit stop 307, a first link 305, and a second link 306, where one end of the first link 305 is hinged to the valve body 401 or the limit stop 307 or the bracket, the other end of the first link 305 is hinged to the second link 306, the other end of the second link 306 is hinged to the lever 308, and the power transmission part is connected to the first link 305, the second link 306, or the hinge post 105 between the first link 305 and the second link 306; in the state that the valve 400 is not closed, the included angle between the first connecting rod 305 and the second connecting rod 306 is smaller than 180 degrees, and the valve is positioned at a non-dead angle position; when the water seal cover 104 is exploded, the transmission device drives the first connecting rod 305 and the second connecting rod 306 to move to the positions which are collinear with each other and drives the lever 308 to rotate, and the limit baffle 307 keeps the first connecting rod 305 and the second connecting rod 306 in a collinear state by limiting the continuous movement of the first connecting rod 305 and the second connecting rod 306. When the first connecting rod 305 and the second connecting rod 306 are in a collinear state, the first connecting rod 305 and the second connecting rod 306 are just at a dead point position, as shown in fig. 5, the first connecting rod 305 and the second connecting rod 306 can not move any more, so that the lever 308 can not move any more, and the closing executing mechanism in the valve 400 is in a closing state, thereby achieving the purpose of locking.
It will be appreciated that in this embodiment, the valve 400 may be a valve 400 commonly used in the prior art, as an example, as shown in fig. 2 and fig. 4, the valve 400 includes a valve body 401, a closing actuator, and two communication ports 405, a first chamber 402 is disposed in the valve body 401, a partition 403 is disposed in the first chamber 402, the partition 403 is used to partition the first chamber 402 into two cavities, the two communication ports 405 are respectively communicated with the two cavities, the partition 403 is provided with a valve port 404, and the communication ports 405 are respectively connected with the pipes 109, so that a heat exchange medium can smoothly pass through the valve 400;
The closing actuator comprises a valve rod 409 and a spring 411, wherein one end of the valve rod 409 is hinged with the lever 308, as shown in fig. 4, specifically, the lever 308 is provided with a bar hole 309, the side surface of the valve rod 409 is provided with a pin 310, and the pin 310 is arranged in the bar hole 309; the other end of the valve rod 409 extends into the first chamber 402, and is provided with a valve core 410, the valve core 410 is adapted to the valve port 404, and is used for adjusting the opening of the valve port 404, one end of the spring 411 is fixed to the valve body 401, the other end is connected with the valve rod 409 through an adjusting block 412, and the adjusting block 412 is used for adjusting the elastic force of the spring 411. As an example, the valve rod 409 is provided with an external thread at one end, the adjusting block 412 is provided with an internal thread in a box fit with the valve rod, and the height of the adjusting block 412 can be adjusted by rotating the adjusting block 412, so that the purpose of adjusting the elastic force of the spring 411 is achieved; under the normal operation state, the valve core 410 is separated from the valve port 404 under the action of the elastic force of the spring 411, so that the valve port 404 is in an open state, when the water seal cover 104 is exploded and drives the power transmission part to act, the lever 308 rotates, and the valve rod 409 is pressed down against the elastic force of the spring 411, so that the valve core 410 can press the valve port 404, thereby closing the valve port 404, achieving the purpose of closing the valve 400 in a linkage manner, and when the valve 400 is closed, the locking mechanism is in a locking state, so that the valve 400 cannot be opened by itself.
It will be appreciated that in the present system, in order to maintain smooth operation of the heat exchange process, in a more sophisticated solution, a balancing valve may be further provided on the pipe 109 to adjust the flow rate of the heat exchange medium, which is the prior art and will not be described here again.
Example 2
In the prior art, coke oven production is intermittent production, and each oven coke production process needs to be subjected to a plurality of production processes of adding (charging) coal, heating and dry distillation, coking, pushing coke and the like, and the coke produced by each oven can form a temperature curve with flame temperature change in the production processes of adding (charging) coal, heating and dry distillation, coking, pushing coke and the like, namely, the real-time change of raw gas output and components in the coal dry distillation process also causes the change of heat exchange quantity in the riser 101, further causes the change of heat exchange gasification rate of the riser 101, and further causes the change of real-time pressure of the riser 101, and further causes the change of water inflow of the parallel riser 101; that is, when the yield of raw gas is large, the heat exchange amount is increased, the pressure in the rising pipe 101 is increased, at this time, the heat exchange working medium flow of the rising pipe 101 should be increased to be more beneficial to waste heat recovery, but in the practical situation, the pressure in the rising pipe 101 is reduced when other rising pipes 101 are arranged in parallel, at this time, the heat exchange working medium flow of the rising pipe 101 should be reduced, and in the practical situation, the heat exchange working medium flow of the rising pipes 101 after being connected in parallel is increased. Thus, bias flow of heat exchange working media (such as water and the like) in the parallel-connected multiple groups of ascending pipes 101 is caused, and waste heat recovery efficiency is reduced. The current method for solving the problem is to adopt a method that a series-parallel ascending pipe 101 outlet pipeline is a group according to the production series, and then the ascending pipe is connected in parallel to an outlet main pipe; there is also a technical scheme that a series-parallel ascending pipe 101 outlet pipeline is a group which is regulated by a regulating valve according to the production series; the orifice plate is additionally arranged at the inlet and the outlet of the rising pipe 101 to limit the flow, so that the stable heat exchange working medium is formed; in practical application, the problems of bias flow of the heat exchange working medium are not effectively solved basically by adopting a parallel connection method, a method for setting a regulating valve and a method for installing an orifice plate according to production serial sequences.
In this embodiment, in order to correct the problem of periodic bias flow of the heat exchange medium, the heat exchange medium is better controlled to exchange heat with the raw gas in the riser 101, in a preferred scheme, the valve 400 is a balance valve, as shown in fig. 6 and 7, the balance valve includes a valve body 401, a closing executing mechanism, two communication ports 405 and two pressure introducing ports 408, a first chamber 402 and a second chamber 406 are disposed in the valve body 401, the riser 101 is provided with a heat exchange medium inlet 107 and a heat exchange medium outlet 108, wherein,
A partition 403 is disposed in the first chamber 402, the partition 403 is configured to partition the first chamber 402 into two cavities, the two communication ports 405 are respectively communicated with the two cavities, the partition 403 is provided with a valve port 404, and the communication ports 405 are respectively connected with the pipe 109;
The second chamber 406 is provided with a movable partition portion 407, the movable partition portion 407 partitions the second chamber 406 into two independent inner cavities, the movable partition portion 407 can move in the second chamber 406 to change the sizes of the two inner cavities, the pressure guiding ports 408 are respectively communicated with the two inner cavities and are respectively communicated with the heat exchange working medium inlet 107 and the heat exchange working medium outlet 108 through the pressure guiding pipes 110, so that the pressure in the two inner cavities is the same as the pressure before the heat exchange working medium enters the riser 101 and the pressure after the heat exchange working medium enters the riser 101, and the pressure difference is detected, thereby achieving the purpose of automatically adjusting the flow; the pressure guiding pipe 110 may preferably be a stainless steel pipe or a copper pipe.
The closing actuating mechanism includes a valve rod 409 and a spring 411, one end of the valve rod 409 is connected with the movable partition 407, the other end is provided with a valve core 410, the valve core 410 is matched with the valve port 404 (as shown in the figure, in this embodiment, a valve core 410 with a conical structure is adopted) and is used for adjusting the opening of the valve port 404, so as to achieve the purpose of adjusting the flow, one end of the spring 411 is fixed on the valve body 401, the other end is connected with the valve rod 409 through an adjusting block 412, and the adjusting block 412 is used for adjusting the elastic force of the spring 411, which can be adjusted by adopting the mode of setting threads in embodiment 1, and is not repeated here.
In this embodiment, the balance valve has three operation points, the first operation point is when operation is started (i.e. when heat exchange is started), the balance valve is opened, and the opening degree of the balance valve corresponds to the basic flow of the fluid flow control; the second action is that in the actual running process, as the raw gas is periodically changed after the coke oven is charged with coal, the coke is dry distilled and burned, and the coke is pushed to the coal charge, the evaporation capacity in the rising pipe 101 is periodically changed, so that the pressure in the rising pipe 101 is periodically changed, and the balance valve can automatically adjust the position of the movable separation part 407 according to the pressure difference, so that the opening of the valve port 404 is effectively adjusted, the flow of the heat transfer working medium is relatively stable, and the problem of periodic bias flow of the heat transfer working medium caused by the periodic pressure change in the rising pipe 101 is avoided, namely, the bias flow problem (reverse deviation correction) can be effectively solved by using the balance valve; the third action is that when water leakage occurs, the pressure in the rising pipe 101 rises sharply, so that the water seal cover 104 is suddenly exploded (opened), and the transmission device is driven to act, so that the balance valve is driven to be synchronously closed, and the automatic closing function of water leakage is realized.
Example 3
In order to prevent the gas in the gas collecting tube from flowing backwards under the condition that the water seal cover 104 is exploded, in the embodiment, the gas collecting tube further comprises a linkage part, the ascending tube assembly further comprises a connecting pipeline 111, the connecting pipeline 111 is communicated with the three-way bridge tube 102, the connecting pipeline 111 is provided with a flap butterfly valve 500, the linkage part comprises a linkage rod 502 and a transmission part 503, one end of the transmission part 503 is connected with the connecting part or the power transmission part, the other end of the transmission part is connected with one end of the linkage rod 502, the linkage rod 502 is hinged to the three-way bridge tube 102 or the seat body 103, and the other end of the linkage rod 502 is arranged on one side of the flap butterfly valve 500 where Guan Bing is opened; when the water seal cover 104 is exploded, the transmission part 503 and the power transmission part synchronously act and drive the linkage rod 502 to rotate, and the linkage rod 502 drives the switch handle 501 of the flap butterfly valve 500 to rotate through rotation, so that the flap butterfly valve 500 is synchronously driven to be closed, an automatic closing function can be displayed when water leaks, and the gas backflow in the gas collecting tube can be effectively prevented.
It will be appreciated that there are various embodiments of the linkage part, as a priority, the transmission part 503 may be the wire core 204 described in embodiment 1, one end of the transmission part 503 is connected to the linkage rod 502, the other end bypasses a rotating shaft 504 and is connected to the connection part, the linkage rod 502 is in a J-shaped structure, and the linkage rod 502 is hinged to the three-way bridge 102 or the base 103 and is pressed against a limiting block 506 by a return spring 505, as shown in fig. 8, so that the linkage rod 502 is kept in an inclined state, and the lower end of the linkage rod 502 is located at one side of the butterfly valve 500 where the butterfly valve Guan Bing is opened, when the water seal cover 104 is exploded, the transmission part 503 is driven to act, so that the linkage rod 502 is pulled to rotate in a counterclockwise direction against the elastic force of the return spring 505, so that the lower end of the linkage rod 502 can drive the switch handle 501 of the butterfly valve 500 to rotate in a closing direction (i.e. clockwise direction), when the switch handle 501 of the butterfly valve 500 rotates past a balance position, the flap 500 can be automatically closed, and the lower end of the linkage rod 502 can be restored to an initial position as shown in fig. 8 when the butterfly valve 505 is driven by the return spring.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (8)
1. The system comprises a rising pipe assembly and a pipeline for conveying heat exchange working media, wherein the rising pipe assembly comprises a rising pipe with a heat exchange function, a three-way bridge pipe communicated with the rising pipe and a water seal part arranged at the upper part of the three-way bridge pipe, the water seal part comprises a base body and a water seal cover, the base body is fixed on the three-way bridge pipe, the base body is provided with a water seal, the water seal cover is movably connected with the base body and is used for sealing the water seal opening, and the heat exchange working media exchange heat with the raw gas in the rising pipe; the device is characterized by further comprising a transmission device and a unhooking shifting fork, wherein the pipeline is provided with a valve, the transmission device is respectively connected with the water seal cover and a closing execution mechanism of the valve, and when the water seal cover is exploded, the transmission device is driven to act and the valve is driven to be synchronously closed by the transmission device;
The transmission device comprises a connecting part and a power transmission part, wherein the connecting part is used for connecting the water seal cover, the connecting part is connected with the power transmission part, the connecting part is used for detachably connecting the water seal cover, and the power transmission part is used for transmitting power generated by explosion of the water seal cover;
The connecting part comprises a rotating shaft and a hook, and the rotating shaft is fixed at one end of the hook and is movably connected with the power transmission part; under the condition that the water seal cover is closed, the rotating shaft is positioned in a clamping groove, the hook hooks the water seal cover, a gravity block is hung on the hook at a position deviating from the gravity center and close to the water seal cover, the gravity block is used for providing a pressing force, the unhooking shifting fork is hinged to the base body, one end of the unhooking shifting fork is positioned below the hook, and the other end of the unhooking shifting fork is movably connected with a pull rod; when the water seal cover is opened manually, the pull rod is pulled to drive the unhooking shifting fork to rotate and upwards squeeze the hook, and the hook rotates around the clamping groove under the action of the squeezing force and is separated from the water seal cover; when the water seal cover is exploded, the water seal cover drives the hook to synchronously act, and the rotating shaft is separated from the clamping groove.
2. The raw gas waste heat recovery system of claim 1, wherein the power transmission part is one or a combination of a plurality of transmission rods, transmission lines, transmission levers, gear transmission mechanisms, chain transmission mechanisms, belt transmission mechanisms, worm gear transmission mechanisms or screw transmission mechanisms.
3. The raw gas waste heat recovery system according to claim 2, wherein the transmission line comprises a housing and a wire core sleeved in the housing, two ends of the wire core are respectively connected with the connecting part and the closing executing mechanism of the valve, one end of the housing is fixed on the valve, the other end of the housing is fixed on the base or the three-way bridge pipe, and the wire core transmits power by moving and/or rotating relative to the housing.
4. The raw gas waste heat recovery system according to claim 1, wherein a stop block is sleeved outside the pull rod and connected with a handle of the water seal cover through a connecting rope; when the hook is separated from the water seal cover, one end of the unhooking shifting fork is contacted with the stop block and presses the stop block downwards, and the pressure born by the stop block is transmitted to the handle through the connecting rope to drive the water seal cover to be opened.
5. The raw gas waste heat recovery system according to claim 1, wherein the transmission device further comprises a power amplification mechanism and/or a locking mechanism, the power amplification mechanism is arranged between the power transmission part and a closing execution mechanism of the valve and is used for amplifying the transmitted power; the locking mechanism is arranged between the power transmission part and the closing actuating mechanism of the valve and is used for locking the closing actuating mechanism of the valve after the valve is closed.
6. The raw gas waste heat recovery system according to claim 5, wherein the power amplification mechanism comprises a lever hinged to a valve body of the valve, one end of the lever is connected with the power transmission part, and the other end of the lever is connected with a closing execution mechanism in the valve;
and/or the number of the groups of groups,
The transmission device further comprises a locking mechanism, the locking mechanism comprises a limit baffle, a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the valve body or the limit baffle or the bracket, the other end of the first connecting rod is hinged to the second connecting rod, the other end of the second connecting rod is hinged to the lever, and the power transmission part is connected with the first connecting rod, the second connecting rod or a hinged column between the first connecting rod and the second connecting rod; in the state that the valve is not closed, the included angle between the first connecting rod and the second connecting rod is smaller than 180 degrees; when the water seal cover is exploded, the transmission device drives the first connecting rod and the second connecting rod to move to the positions which are mutually collinear, and drives the lever to rotate, and the limit baffle keeps the first connecting rod and the second connecting rod in a collinear state by limiting the continuous movement of the first connecting rod and the second connecting rod.
7. The raw gas waste heat recovery system according to claim 6, wherein the valve comprises a valve body, a closing execution mechanism and two communication ports, a first chamber is arranged in the valve body, a partition part is arranged in the first chamber and is used for dividing the first chamber into two cavities, the two communication ports are respectively communicated with the two cavities, the partition part is provided with a valve port, and the communication ports are respectively connected with the pipeline;
the closing actuating mechanism comprises a valve rod and a spring, one end of the valve rod is hinged with the lever, the other end of the valve rod extends into the first chamber and is provided with a valve core, the valve core is matched with the valve port and is used for adjusting the opening of the valve port, one end of the spring is fixed on the valve body, the other end of the spring is connected with the valve rod through an adjusting block, and the adjusting block is used for adjusting the elastic force of the spring;
Or alternatively, the first and second heat exchangers may be,
The valve is a balance valve, the balance valve comprises a valve body, a closing executing mechanism, two communication ports and two pressure leading ports, a first chamber and a second chamber are arranged in the valve body, the rising pipe is provided with a heat exchange working medium inlet and a heat exchange working medium outlet, wherein,
A separation part is arranged in the first chamber and used for separating the first chamber into two cavities, the two communication ports are respectively communicated with the two cavities, the separation part is provided with a valve port, and the communication ports are respectively connected with the pipeline;
The second chamber is internally provided with a movable separation part, the movable separation part separates the second chamber into two independent inner cavities, and the pressure guiding ports are respectively communicated with the two inner cavities and are respectively communicated with the heat exchange working medium inlet and the heat exchange working medium outlet through pressure guiding pipes;
The closing actuating mechanism comprises a valve rod and a spring, one end of the valve rod is connected with the movable separation part, the other end of the valve rod is provided with a valve core, the valve core is matched with the valve port and used for adjusting the opening of the valve port, one end of the spring is fixed on the valve body, the other end of the spring is connected with the valve rod through an adjusting block, and the adjusting block is used for adjusting the elastic force of the spring.
8. The raw gas waste heat recovery system according to any one of claims 1 to 6, further comprising a linkage part, wherein the ascending pipe assembly further comprises a connecting pipeline, the connecting pipeline is communicated with the three-way bridge pipe, the connecting pipeline is provided with a flap butterfly valve, the linkage part comprises a linkage rod and a transmission piece, one end of the transmission piece is connected with the connecting part or the power transmission part, the other end of the transmission piece is connected with one end of the linkage rod, the linkage rod is hinged to the three-way bridge pipe or the seat body, and the other end of the linkage rod is arranged on one side of a switch handle of the flap butterfly valve; when the water seal cover is exploded, the transmission piece and the power transmission part synchronously act and drive the linkage rod to rotate, and the linkage rod drives the switch handle of the flap butterfly valve to rotate through rotation, so that the flap butterfly valve is synchronously driven to be closed.
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| CN208748023U (en) * | 2018-07-31 | 2019-04-16 | 山西阳光焦化集团股份有限公司 | A kind of tedge manhole cover headstock gear |
| CN109054870A (en) * | 2018-09-28 | 2018-12-21 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven coke oven uprising tube leads fiery device and its working method |
| CN208980640U (en) * | 2018-09-28 | 2019-06-14 | 中冶焦耐(大连)工程技术有限公司 | A kind of pair of dust excluding hood of coke oven has the riser structural of protective effect |
| CN209872857U (en) * | 2019-03-16 | 2019-12-31 | 山东三木环保工程有限公司 | Automatic interlocking opening and closing device for coke oven top bridge pipe turning plate and ascending pipe water seal cover |
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