CN215808591U - Novel vertical plate type coal economizer - Google Patents
Novel vertical plate type coal economizer Download PDFInfo
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- CN215808591U CN215808591U CN202121389036.5U CN202121389036U CN215808591U CN 215808591 U CN215808591 U CN 215808591U CN 202121389036 U CN202121389036 U CN 202121389036U CN 215808591 U CN215808591 U CN 215808591U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a novel vertical plate type economizer which is characterized by comprising an inlet header assembly, an outlet header assembly and a plurality of tube panel units, wherein each tube panel unit comprises a plurality of heat exchange tubes taking the vertical direction as the axial direction and a plurality of flat steel plates taking the vertical direction as the length direction, the heat exchange tubes are horizontally and transversely arranged at intervals, each flat steel plate connects two adjacent heat exchange tubes to enable the tube panel units to form a whole, the tube panel units are horizontally and longitudinally arranged at intervals in a stacking mode, the inlet header assembly comprises an inlet header pipe and a plurality of inlet branch pipes, each inlet branch pipe corresponds to each tube panel unit and is connected with the lower end of each heat exchange tube in the corresponding tube panel unit, and the inlet branch pipes connected with the adjacent tube panel units are vertically arranged in a staggered mode. The tube panel unit is connected with the flat steel through the heat exchange tube to form an integral vertical platy structure, so that heat is not absorbed only by the outer wall of the heat exchange tube when the heat exchange tube exchanges heat with flue gas, and the heat of the flue gas can be absorbed by the flat steel plate and is transmitted to the heat exchange tube, and the integral heat exchange efficiency is improved.
Description
Technical Field
The utility model relates to waste liquid incineration in the chemical industry, in particular to a novel vertical plate type economizer.
Background
In an alkali recovery boiler in the pulping industry and a waste liquid incineration boiler in the chemical industry, due to the fact that flue gas fly ash contains a large amount of alkali metals, ash melting point is extremely low, the flue gas fly ash is easy to gather on a heating surface, and then ash deposition and ash blockage are generated, and long-term stable operation of the boiler is influenced. The economizer is used in a boiler, heats feed water by using the heat of flue gas at the tail of the boiler so as to reduce the temperature of exhaust gas and save fuel, and the water of the conventional economizer enters from an inlet header and exits from an outlet header, so that the temperature of the flue gas is reduced by exchanging heat between the flue gas and the water.
If the traditional horizontal tubular economizer is adopted, ash deposition and ash blockage are easily caused when the horizontal tubular economizer is used in the alkali recovery boiler, the ash content in flue gas is high, and when the ash melting point is low, the ash is easily accumulated on the outer wall of a tube array of the horizontal tubular economizer, so that the flow area of the flue gas is greatly reduced, the heat exchange area of the economizer is influenced, the subsequent shutdown for ash deposition cleaning is caused, and the normal production is seriously influenced.
Therefore, a new vertical plate economizer with simple structure, reduced dust deposition and improved heat exchange efficiency is needed to be developed.
Disclosure of Invention
The utility model aims to solve the defects of the background technology and provide a novel vertical plate type economizer which has a simple structure, reduces dust deposition and improves heat exchange efficiency.
The technical scheme of the utility model is as follows: a novel vertical plate type coal economizer is characterized by comprising an inlet header assembly, an outlet header assembly and a plurality of tube panel units,
each tube panel unit comprises a plurality of heat exchange tubes taking the vertical direction as the axial direction and a plurality of flat steel plates taking the vertical direction as the length direction, the plurality of heat exchange tubes are horizontally and transversely arranged at intervals, each flat steel plate connects two adjacent heat exchange tubes to form the tube panel unit into a whole, the plurality of tube panel units are horizontally and longitudinally arranged at intervals in a stacking way,
the inlet header assembly comprises an inlet header pipe and a plurality of inlet branch pipes, each inlet branch pipe corresponds to each tube panel unit and is connected with the lower ends of all heat exchange tubes in the corresponding tube panel unit, the inlet branch pipes connected with the adjacent tube panel units are arranged in a vertically staggered manner, and the inlet header pipe is positioned below all the inlet branch pipes and is connected with all the inlet branch pipes;
the outlet header assembly comprises an outlet header pipe and a plurality of outlet branch pipes, each outlet branch pipe corresponds to each tube panel unit and is connected with the upper ends of all heat exchange tubes in the corresponding tube panel unit, and the outlet header pipe is positioned above all the outlet branch pipes and is connected with all the outlet branch pipes.
Preferably, the upper ends of all the heat exchange tubes and the flat steel plates in each tube panel unit are flush, and the lower ends of all the heat exchange tubes and the flat steel plates in each tube panel unit are flush.
Preferably, all flat steel plates in each tube panel unit are arranged along the width direction along the transverse direction.
Preferably, the lower ends of all the heat exchange tubes in each tube panel unit are provided with lower joints to be connected with inlet branch tubes, and the inlet branch tubes are axially and transversely arranged.
Furthermore, the inlet main pipe is axially and longitudinally arranged, and each inlet branch pipe is provided with a lower connecting pipe connected with the inlet main pipe.
Furthermore, the lower connecting pipe comprises a first straight pipe section, a second bent pipe section and a third straight pipe section which are sequentially connected from top to bottom, the first straight pipe section is connected with the inlet branch pipe, the third straight pipe section is connected with the inlet header pipe, and the second bent pipe sections of the adjacent lower connecting pipes are alternately bent towards the two transverse sides.
Preferably, the upper ends of all the heat exchange tubes in each tube panel unit are provided with upper joints connected with outlet branch tubes, and the outlet branch tubes are arranged along the axial direction in the transverse direction.
Preferably, the outlet main pipe is axially and longitudinally arranged, each outlet branch pipe is provided with a vertical upper connecting pipe connected with the outlet main pipe,
preferably, each outlet branch pipe is provided with mounting ears along both lateral sides.
The utility model has the beneficial effects that:
1. the heat exchange tube adopts vertical arrangement, and the flue gas flows extremely down from last outside the heat exchange tube, and water flows from supreme down in the heat exchange tube, and the flue gas flow direction is unanimous with the heat exchange tube arrangement direction for the ash content that vertical arrangement can make the outer wall of tubes gathering in addition drops because self gravity reason, thereby alleviates the deposition of heat exchange tube outer wall, makes the continuous operation duration extension of boiler.
2. The tube panel unit is connected with the flat steel through the heat exchange tube to form an integral vertical platy structure, so that heat is not absorbed only by the outer wall of the heat exchange tube when heat is exchanged with flue gas, the heat of the flue gas can be absorbed by the flat steel plate and is transmitted to the heat exchange tube, and the integral heat exchange efficiency is improved.
3. The inlet branch pipes are arranged in a vertically staggered manner, so that accumulated dust can be prevented from being accumulated at the lower inlet branch pipe, and the flow of smoke is ensured.
Drawings
FIG. 1 is a front view of the present invention
FIG. 2 is a left side view of FIG. 1
FIG. 3 is a perspective view of the present invention
FIG. 4 is an enlarged view of the portion A in FIG. 3
Wherein: the heat exchange tube comprises a tube panel unit 1, a tube panel unit 2, a heat exchange tube 3, a flat steel plate 4, an inlet manifold 5, an inlet branch tube 6, an outlet manifold 7, an outlet branch tube 8, a lower connector 9, a lower connecting tube (9.1-a first straight tube section 9.2-a second bent tube section 9.3-a third straight tube section) 10, an upper connector 11, an upper connecting tube 12 and a mounting lug.
Detailed Description
The utility model is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-4, the present invention provides a novel vertical plate economizer, comprising an inlet header assembly, the heat exchanger comprises an outlet header assembly and a plurality of tube panel units 1, wherein each tube panel unit 1 comprises a plurality of heat exchange tubes 2 taking the vertical direction as the axial direction and a plurality of flat steel plates 3 taking the vertical direction as the length direction, the heat exchange tubes 2 are horizontally and transversely arranged at intervals, each flat steel plate 3 connects two adjacent heat exchange tubes 2 to form a whole, the tube panel units 1 are horizontally and longitudinally stacked, the inlet header assembly comprises an inlet header pipe 4 and a plurality of inlet branch pipes 5, each inlet branch pipe 5 corresponds to each tube panel unit 1 and is connected with the lower ends of all the heat exchange tubes 2 in the corresponding tube panel unit 1, the inlet branch pipes 5 connected with the adjacent tube panel units 1 are vertically staggered, and the inlet header pipe 4 is positioned below all the inlet branch pipes 5 and is connected with all the inlet branch pipes 5; the outlet header assembly comprises an outlet header pipe 6 and a plurality of outlet branch pipes 7, each outlet branch pipe 7 corresponds to each tube panel unit 1 and is connected with the upper ends of all heat exchange tubes 2 in the corresponding tube panel unit 1, and the outlet header pipe 6 is positioned above all the outlet branch pipes 7 and is connected with all the outlet branch pipes 7. The left-right direction in fig. 1 is the lateral direction, and the left-right direction in fig. 2 is the longitudinal direction.
In this embodiment, the upper ends of all the heat exchange tubes 2 and the flat steel plates 3 in each tube panel unit 1 are flush, and the lower ends of all the heat exchange tubes 2 and the flat steel plates 3 in each tube panel unit 1 are flush. The heat exchange tubes 2 and the flat steel plates 3 are welded, all the flat steel plates 3 in each tube panel unit 1 are transversely arranged in the width direction, and each flat steel plate 3 extends along the width direction (transversely) to pass through the central axis of the heat exchange tube 2 connected with the flat steel plate.
The lower ends of all the heat exchange tubes 2 in each tube panel unit 1 are respectively provided with a lower joint 8 to be connected with an inlet branch tube 5, and the inlet branch tube 5 is axially and transversely arranged. The inlet main pipe 4 is axially and longitudinally arranged, and each inlet branch pipe 5 is provided with a lower connecting pipe 9 connected with the inlet main pipe 4. The lower connecting pipe 9 comprises a first straight pipe section 9.1, a second bent pipe section 9.2 and a third straight pipe section 9.3 which are sequentially connected from top to bottom, the first straight pipe section 9.1 is connected with the inlet branch pipe 5, the third straight pipe section 9.3 is connected with the inlet main pipe 4, and the second bent pipe sections 9.2 of the adjacent lower connecting pipes 9 are alternately bent towards the two transverse sides.
The upper ends of all the heat exchange tubes 2 in each tube panel unit 1 are respectively provided with an upper joint 10 to be connected with an outlet branch tube 7, and the outlet branch tubes 7 are arranged along the axial direction in the transverse direction. The outlet header pipe 6 is axially and longitudinally arranged, and each outlet branch pipe 7 is provided with a vertical upper connecting pipe 11 connected with the outlet header pipe 6. The outlet branch pipes 7 are provided with mounting lugs 12 along both sides in the transverse direction.
In this embodiment, all the inlet branch pipes 5 have only two positions, i.e., a high position and a low position, and the panel units 1 are arranged in sequence along the stacking direction, the panel unit 1 with odd ordinal number corresponds to one of the inlet branch pipes 5 with the high position and the low position, and the panel unit 1 with even ordinal number corresponds to the other of the inlet branch pipes 5 with the high position and the low position. As shown in fig. 2, when the tube panel units 1 with odd ordinal numbers are arranged from left to right in the stacking direction, the inlet branch tubes 5 corresponding to the tube panel units 1 with even ordinal numbers are in the lower position, and the inlet branch tubes 5 corresponding to the tube panel units 1 with even ordinal numbers are in the upper position.
The working principle of the embodiment is as follows:
the flue gas flows from last to down outside heat exchange tube 2 of tube panel unit 1, and water gets into from entry house steward 4, export house steward 6 discharges, and water is supreme flow from down in heat exchange tube 2, and heat exchange tube 2 and band steel sheet 3 absorb the flue gas heat simultaneously, and band steel sheet 3 can pass the heat to heat exchange tube 2, by the inside water of heat exchange tube 2 heating, has increased heat transfer efficiency. And the flue gas flow direction is consistent with the arrangement direction and the gravity direction of the heat exchange tubes 2, and the ash collected on the outer walls of the heat exchange tubes 2 can be blown down.
Claims (9)
1. A novel vertical plate type coal economizer is characterized by comprising an inlet header assembly, an outlet header assembly and a plurality of tube panel units (1),
each tube panel unit (1) comprises a plurality of heat exchange tubes (2) taking the vertical direction as the axial direction and a plurality of flat steel plates (3) taking the vertical direction as the length direction, the heat exchange tubes (2) are horizontally and transversely arranged at intervals, each flat steel plate (3) connects two adjacent heat exchange tubes (2) to form the tube panel unit (1) into a whole, the tube panel units (1) are horizontally and longitudinally arranged at intervals in a stacking way,
the inlet header assembly comprises an inlet header pipe (4) and a plurality of inlet branch pipes (5), each inlet branch pipe (5) corresponds to each tube panel unit (1) and is connected with the lower ends of all heat exchange tubes (2) in the corresponding tube panel unit (1), the inlet branch pipes (5) connected with adjacent tube panel units (1) are arranged in a vertically staggered manner, and the inlet header pipe (4) is positioned below all the inlet branch pipes (5) and is connected with all the inlet branch pipes (5);
the outlet header assembly comprises an outlet header pipe (6) and a plurality of outlet branch pipes (7), each outlet branch pipe (7) corresponds to each tube panel unit (1) and is connected with the upper ends of all heat exchange tubes (2) in the corresponding tube panel unit (1), and the outlet header pipe (6) is positioned above all the outlet branch pipes (7) and is connected with all the outlet branch pipes (7).
2. The novel vertical plate economizer of claim 1, wherein the upper ends of all the heat exchange tubes (2) and the flat steel plate (3) in each tube panel unit (1) are flush, and the lower ends of all the heat exchange tubes (2) and the flat steel plate (3) in each tube panel unit (1) are flush.
3. The new vertical plate economizer of claim 1 wherein all flat steel plates (3) in each tube panel unit (1) are arranged in the width direction in the transverse direction.
4. The novel vertical plate economizer of claim 1, wherein the lower ends of all the heat exchange tubes (2) in each tube panel unit (1) are provided with lower joints (8) to be connected with inlet branch tubes (5), and the inlet branch tubes (5) are axially and transversely arranged.
5. The novel vertical plate economizer of claim 4, wherein the inlet main pipe (4) is axially and longitudinally arranged, and each inlet branch pipe (5) is provided with a lower connecting pipe (9) connected with the inlet main pipe (4).
6. The novel vertical plate economizer of claim 5, wherein the lower connecting pipe (9) comprises a first straight pipe section (9.1), a second bent pipe section (9.2) and a third straight pipe section (9.3) which are sequentially connected from top to bottom, the first straight pipe section (9.1) is connected with the inlet branch pipe (5), the third straight pipe section (9.3) is connected with the inlet header pipe (4), and the second bent pipe sections (9.2) of the adjacent lower connecting pipes (9) are alternately bent towards the two transverse sides.
7. The novel vertical plate economizer of claim 1, wherein the upper ends of all the heat exchange tubes (2) in each tube panel unit (1) are provided with upper connectors (10) connected with outlet branch tubes (7), and the outlet branch tubes (7) are arranged axially and transversely.
8. The novel vertical plate economizer of claim 1, wherein the outlet header pipe (6) is axially and longitudinally arranged, and each outlet branch pipe (7) is provided with a vertical upper connecting pipe (11) connected with the outlet header pipe (6).
9. A new vertical plate economizer as claimed in claim 1 wherein each outlet branch (7) is provided with mounting ears (12) along both lateral sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121389036.5U CN215808591U (en) | 2021-06-22 | 2021-06-22 | Novel vertical plate type coal economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121389036.5U CN215808591U (en) | 2021-06-22 | 2021-06-22 | Novel vertical plate type coal economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215808591U true CN215808591U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121389036.5U Active CN215808591U (en) | 2021-06-22 | 2021-06-22 | Novel vertical plate type coal economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215808591U (en) |
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2021
- 2021-06-22 CN CN202121389036.5U patent/CN215808591U/en active Active
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