CN210945481U - Heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser - Google Patents
Heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser Download PDFInfo
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- CN210945481U CN210945481U CN201921620172.3U CN201921620172U CN210945481U CN 210945481 U CN210945481 U CN 210945481U CN 201921620172 U CN201921620172 U CN 201921620172U CN 210945481 U CN210945481 U CN 210945481U
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model relates to a heat transfer medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger tedge, the tedge includes waste heat recovery heat exchanger tedge (1), around having put heat transfer medium pipe on waste heat recovery heat exchanger tedge (1) pipe wall, heat transfer medium pipe is including heat transfer cold medium import (2) and heat transfer cold medium export (3), heat transfer cold medium import (2) department is provided with heat transfer cold medium import balanced valve (12). The utility model discloses can adapt to raw coke oven gas output and fire drop curve change operating mode, through the constancy of the reverse control flow of the pressure differential of waste heat recovery heat exchanger tedge heat transfer medium import, namely when the raw coke oven gas output is big, heat transfer volume is big, heat transfer medium import and export pressure differential can increase, can cause the heat transfer medium resistance to drop the increase, make the tedge flow produce the reduction trend, this balanced valve is just that pressure differential reverse control, increase the entry area, reduce the resistance, the steady tedge flow is invariable, heat exchange efficiency has been improved; and vice versa.
Description
Technical Field
The utility model relates to a heat transfer medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger tedge, mainly used coke oven raw coke oven gas waste heat recovery belongs to heat exchanger technical field.
Background
The coke oven crude gas waste heat recovery riser is being popularized or is widely applied to the waste heat recovery of the coke oven crude gas. The coke oven is formed by arranging a plurality of dry distillation chambers (hearths) in parallel, each hearth is provided with one or two ascending pipes to convey the dry distilled crude gas to a bridge pipe, and after the crude gas is rapidly cooled, the crude gas is conveyed to a gas collecting pipe. The coke oven raw gas waste heat recovery riser is a riser filled with heat insulation materials and replaced with a coke oven raw gas waste heat recovery riser which is arranged on the top of the oven in parallel and connected with a gas collecting pipe in parallel. The coke oven production is intermittent production, each coke oven production process needs to go through several production processes of coal adding (loading), heating and dry distillation, coke cooking, coke pushing and the like, the coke produced by each coke oven can form a temperature curve of fire drop temperature change in several production processes of coal adding (loading), heating and dry distillation, coke cooking, coke pushing and the like, namely the real-time change of the output and components of the crude gas in the coal dry distillation process and the change of the heat exchange quantity of an ascending pipe of the crude gas waste heat recovery heat exchanger, further the change of the gasification rate of a heat exchange medium in the ascending pipe of the crude gas waste heat recovery heat exchanger, the change of the real-time pressure drop of the heat exchange medium in the ascending pipe of the crude gas waste heat recovery heat exchanger, further the change of the water inlet flow of the ascending pipe of the parallel crude gas waste heat recovery heat exchanger, namely the heat exchange quantity is increased when the crude gas output is large, the heat is taken from the ascending pipe of the waste heat recovery heat exchanger to increase the pressure, at the moment, the heat exchanger needs to increase the water inflow to be more favorable for waste heat recovery, and the actual condition is that the pressure difference of the heat exchange medium inlet and outlet in the ascending pipe of the waste heat recovery heat exchanger is increased when the ascending pipe of other waste heat recovery heat exchangers connected in parallel is actually used, at the moment, the amount of the heat exchanger needs to be reduced when the water inflow (or other heat exchange media) is reduced, and the actual condition is caused that the water flow can be increased when the ascending pipe of other. Therefore, the water (or other thermal working medium) of the heat exchange medium of the ascending pipes of the crude gas waste heat recovery heat exchangers connected in parallel is deflected, and the waste heat recovery efficiency is reduced.
At present, a method that outlet pipelines of an ascending pipe of a serial-parallel waste heat recovery heat exchanger are mostly adopted as a group according to a production serial sequence and then are connected in parallel to an outlet header pipe is adopted; the technical scheme that outlet pipelines of the ascending pipes of the serial-parallel waste heat recovery heat exchangers are used as a group and are adjusted by adjusting valves according to the production serial order is also adopted; and the inlet and the outlet of the riser of the waste heat recovery heat exchanger are additionally provided with pore plates for flow limiting, so that the water (or other hot working mediums) stabilizing effect of the heat exchange medium is formed.
The parallel connection method adopted according to the production series does not substantially solve the problem of water (or other hot working mediums) bias flow of the heat exchange medium; the scheme of the regulating valve has the actual situation of unorganized flame which cannot be used on site, namely the regulating valve is not allowed to be added and used under the actual working condition; the adoption of the orifice plate for flow limitation does not substantially solve the problem of water (or other hot working mediums) bias flow of the heat exchange medium.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a heat transfer medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger tedge that intraductal flow does not influence and change with intraductal pressure (evaporation capacity change) is provided to above-mentioned prior art.
The utility model provides a technical scheme that above-mentioned problem adopted does: a heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser comprises a waste heat recovery heat exchanger riser, wherein a heat exchange medium pipe (or other devices such as a heat jacket and the like) is wound on the pipe wall of the waste heat recovery heat exchanger riser, the heat exchange medium pipe comprises a heat exchange medium inlet and a heat exchange medium outlet, a heat exchange medium inlet balance valve is connected to the heat exchange medium inlet, the heat exchange medium inlet balance valve comprises a balance valve piston type valve core, a balance valve inlet and a balance valve outlet are respectively arranged on two sides of the balance valve piston type valve core, the balance valve outlet is connected with the heat exchange medium inlet, the balance valve inlet is connected with an external pipeline to be connected with heat exchange medium, a first piston cavity is connected to the lower end of the balance valve piston type valve core, and a heat exchange medium inlet pressure-inducing pipe nozzle is arranged on the first piston cavity, the balance valve is characterized in that a third piston cavity is connected to the upper end of the piston type valve core of the balance valve, a heat exchange medium outlet pressure-leading nozzle is arranged on the third piston cavity, a heat exchange medium inlet pressure-leading port and a heat exchange medium outlet pressure-leading port are respectively arranged at positions, close to a heat exchange medium inlet and a heat exchange medium outlet, of the heat exchange medium pipe, a heat exchange medium inlet pressure-leading pipe is connected between the heat exchange medium inlet pressure-leading port and the heat exchange medium inlet pressure-leading nozzle, and a heat exchange medium outlet pressure-leading pipe is connected between the heat exchange medium outlet pressure-leading port and the heat exchange medium outlet pressure-leading.
Furthermore, a check valve installed in the same direction as the heat exchange medium is arranged at the heat exchange medium outlet.
Furthermore, a balance spring is arranged in the third piston cavity.
Furthermore, a horn mouth with a large lower part and a small upper part is formed in the piston type valve core of the balance valve.
Compared with the prior art, the utility model has the advantages of:
the utility model relates to a heat transfer medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger tedge, can adapt to raw coke oven gas output and the change operating mode of fire drop curve, it is invariable or required through the reverse control flow of the pressure differential of waste heat recovery heat exchanger tedge heat transfer medium import, namely when coke oven raw coke oven gas output is big, when heat transfer volume is big, heat transfer medium import and export pressure differential can increase, can cause the increase of heat transfer medium resistance drop, make the tedge flow produce the reduction trend, this balanced valve is just the reverse regulation of pressure differential, increase the entry area, reduce the resistance, stabilize the tedge flow and be invariable or increase flow control, heat exchange efficiency has been improved; and vice versa.
Drawings
Fig. 1 is a schematic diagram of the heat transfer medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger riser of the utility model.
Wherein:
ascending pipe 1 of waste heat recovery heat exchanger
Heat exchange medium inlet 2
Heat exchange medium outlet 3
Heat exchange medium inlet pressure leading port 4
Heat exchange medium inlet pressure leading pipe 5
Heat exchange medium outlet pressure leading pipe 7
Heat exchange medium inlet balance valve 12
Balance valve inlet 12-1
Balanced valve outlet 12-2
Piston type valve core 12-3 of balance valve
Pressure-leading pipe nozzle 12-4 of heat exchange medium inlet
First piston chamber 12-5
Heat exchange medium outlet pressure leading pipe nozzle 12-8
Third piston chamber 12-9
Balance spring 12-10
A one-way valve 13.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Referring to fig. 1, the utility model relates to a heat transfer medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger riser, which comprises a waste heat recovery heat exchanger riser 1, a heat transfer medium pipe (or other devices, such as a heat jacket, etc.) is wound on the pipe wall of the waste heat recovery heat exchanger riser 1, the heat transfer medium pipe comprises a heat transfer medium inlet 2 and a heat transfer medium outlet 3, a heat transfer medium inlet balance valve 12 is connected to the heat transfer medium inlet 2, the heat transfer medium inlet balance valve 12 comprises a balance valve piston type valve core 12-3, a balance valve inlet 12-1 and a balance valve outlet 12-2 are respectively arranged on two sides of the balance valve piston type valve core 12-3, the balance valve outlet 12-2 is connected with the heat transfer medium inlet 2, the balance valve inlet 12-1 is connected with an outer pipeline to be connected with a heat transfer medium, the balance valve piston type valve core 12-3 is characterized in that the lower end of the balance valve piston type valve core 12-3 is connected with a first piston cavity 12-5, a heat exchange medium inlet pressure guide pipe orifice 12-4 is arranged on the first piston cavity 12-5, the upper end of the balance valve piston type valve core 12-3 is connected with a third piston cavity 12-9, a balance spring 12-10 is arranged in the third piston cavity 12-9, a heat exchange medium outlet pressure guide pipe orifice 12-8 is arranged on the third piston cavity 12-9, a heat exchange medium inlet pressure guide orifice 4 and a heat exchange medium outlet pressure guide orifice 6 are respectively arranged at positions close to a heat exchange medium inlet 2 and a heat exchange medium outlet 3 of the heat exchange medium pipe, a heat exchange medium inlet pressure guide pipe 5 is connected between the heat exchange medium inlet pressure guide orifice 4 and the heat exchange medium inlet pressure guide pipe orifice 12-4, and a heat exchange medium outlet pressure guide pipe orifice 12-8 are connected and arranged between A pressure leading pipe 7 with a heat exchange medium outlet is arranged;
a one-way valve 13 which is installed in the same direction as the heat exchange medium is arranged at the heat exchange medium outlet 3;
the essence of binary automatic protection of the ascension pipe of the raw coke oven gas waste heat recovery heat exchanger is that the heat exchange medium inlet balance valve 12 is used for regulating and protecting, and the regulating and protecting principle is that the heat exchange medium inlet balance valve 12 regulates and controls the flow of the heat exchange medium of the ascension pipe 1 of the raw coke oven gas waste heat recovery heat exchanger, and the specific control method is as follows:
setting an initial flow, connecting a heat exchange medium inlet pressure guide port 4 to a heat exchange medium inlet pressure guide nozzle 12-4 connected to a first piston cavity 12-5 by a heat exchange medium inlet pressure guide pipe 5, and forming pressure P1 in the first piston cavity 12-5 communicated with the heat exchange medium inlet pressure guide nozzle;
a heat exchange medium outlet pressure leading port 6 is connected to a heat exchange medium outlet pressure leading nozzle 12-8 on a third piston cavity 12-9 by a heat exchange medium outlet pressure leading pipe 7, a balance spring 12-10 is arranged in the third piston cavity 12-9, and the sum of the heat exchange medium outlet pressure and the pressure of the balance spring 12-10 is P3; the pressure acting on the upper end surface of the piston type valve core 12-3 of the balance valve is P3;
the opening of the piston hole when P1 is P3 is the same as the set value, that is, the initial flow is set to be the proper proportion value of the water supply flow and the evaporation capacity which meet the heat exchange requirement of the riser 1 of the waste heat recovery heat exchanger, and at the moment, the operation of the riser 1 of the waste heat recovery heat exchanger can be realized after the opening of the piston type valve core 12-3 of the balance valve is the initial set value;
when the output of the raw coke oven gas is changed and the change of the heat exchange evaporation capacity of the riser 1 of the waste heat recovery heat exchanger is increased in the running process of the coke oven based on the increase of heat, the pressure formed in the ascending pipe 1 of the waste heat recovery heat exchanger can be changed, so that the pressure of the heat exchange cold medium inlet 2 and the heat exchange medium outlet 3 in the pressure cavities at the two ends of the piston type valve core 12-3 of the balance valve is unbalanced, p1 is larger than P3, the balance valve piston type valve core 12-3 moves upwards, a bell mouth with a large lower part and a small upper part is formed in the balance valve piston type valve core 12-3, the balance valve piston type valve core 12-3 moves upwards to increase the opening of the heat exchange medium inlet balance valve 12 in a proportional mode, the flow of the heat exchange medium is increased, the supply amount of the heat exchange medium needs to be increased in the waste heat recovery heat exchanger ascending pipe 1 to achieve maximization of heat exchange efficiency, and therefore the optimized control of the flow of the heat exchange medium is achieved;
on the contrary, when the output of the raw coke oven gas is changed and the change of the heat exchange evaporation capacity of the riser 1 of the waste heat recovery heat exchanger is reduced in the operation process of the coke oven and the heat is reduced, the pressure formed in the ascending pipe 1 of the waste heat recovery heat exchanger can be changed, so that the pressure of the heat exchange cold medium inlet 2 and the heat exchange medium outlet 3 in the pressure cavities at the two ends of the piston type valve core 12-3 of the balance valve is unbalanced, p1 is less than P3, the piston type valve core 12-3 of the balance valve moves downwards, the bell mouth with the larger lower part and the smaller upper part is formed in the piston type valve core 12-3 of the balance valve, the piston type valve core 12-3 of the balance valve moves downwards in a proportional mode, the opening degree of the heat exchange medium inlet balance valve 12 is reduced, the flow of the heat exchange medium is reduced, at the moment, the supply quantity of the heat exchange medium needs to be reduced for achieving the maximization of the heat exchange efficiency of the waste heat recovery heat exchanger, and therefore the flow optimization control of the heat exchange medium is achieved.
The balance valve is a principle for solving the change relation of flow pressure difference by utilizing a balance principle, and can be converted into a single-end pressure difference regulation type, such as a structure of a regulating valve and the like.
The upper and lower parts are general, and can be in the directions of upper, lower, left, right, front and back, and the like, and the principle of balance can also be a technical scheme of communicating basic principles of diaphragm type regulating valves and the like except for pistons.
In addition, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement modes should fall within the protection scope of the claims of the present invention.
Claims (4)
1. The utility model provides a heat transfer medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger tedge which characterized in that: the waste heat recovery heat exchanger ascending pipe comprises a waste heat recovery heat exchanger ascending pipe (1), a heat exchange medium pipe is wound on the pipe wall of the waste heat recovery heat exchanger ascending pipe (1), the heat exchange medium pipe comprises a heat exchange medium inlet (2) and a heat exchange medium outlet (3), a heat exchange medium inlet balance valve (12) is connected and arranged at the position of the heat exchange medium inlet (2), the heat exchange medium inlet balance valve (12) comprises a balance valve piston type valve core (12-3), a balance valve inlet (12-1) and a balance valve outlet (12-2) are respectively arranged at two sides of the balance valve piston type valve core (12-3), the balance valve outlet (12-2) is connected with the heat exchange medium inlet (2), the balance valve inlet (12-1) is connected with an outer pipeline to be connected with a heat exchange medium, and a first piston cavity (12-5) is connected to the lower end of the balance valve piston type valve, a pressure guide nozzle (12-4) of a heat exchange medium inlet is arranged on the first piston cavity (12-5), the upper end of the piston type valve core (12-3) of the balance valve is connected with a third piston cavity (12-9), a pressure guide nozzle (12-8) of a heat exchange medium outlet is arranged on the third piston cavity (12-9), a heat exchange medium inlet pressure guide port (4) and a heat exchange medium outlet pressure guide port (6) are respectively arranged at the positions of the heat exchange medium pipe close to the heat exchange medium inlet (2) and the heat exchange medium outlet (3), a heat exchange medium inlet pressure guide pipe (5) is connected between the heat exchange medium inlet pressure guide port (4) and the heat exchange medium inlet pressure guide pipe nozzle (12-4), a heat exchange medium outlet pressure-leading pipe (7) is connected between the heat exchange medium outlet pressure-leading port (6) and the heat exchange medium outlet pressure-leading nozzles (12-8).
2. The heat exchange medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger riser of claim 1, characterized in that: and a one-way valve (13) which is installed in the same direction as the heat exchange medium is arranged at the heat exchange medium outlet (3).
3. The heat exchange medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger riser of claim 1, characterized in that: and a balance spring (12-10) is arranged in the third piston cavity (12-9).
4. The heat exchange medium flow self-balancing raw coke oven gas waste heat recovery heat exchanger riser of claim 1, characterized in that: the balance valve piston type valve core (12-3) is provided with a bell mouth with a large lower part and a small upper part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921620172.3U CN210945481U (en) | 2019-09-26 | 2019-09-26 | Heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921620172.3U CN210945481U (en) | 2019-09-26 | 2019-09-26 | Heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551509A (en) * | 2019-09-26 | 2019-12-10 | 葛霖 | heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser |
| CN111925812A (en) * | 2020-07-08 | 2020-11-13 | 福建省气柜设备安装有限公司 | Coke oven gas recycling system |
-
2019
- 2019-09-26 CN CN201921620172.3U patent/CN210945481U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551509A (en) * | 2019-09-26 | 2019-12-10 | 葛霖 | heat exchange medium flow self-balancing crude gas waste heat recovery heat exchanger riser |
| CN111925812A (en) * | 2020-07-08 | 2020-11-13 | 福建省气柜设备安装有限公司 | Coke oven gas recycling system |
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