CN111912103A - Rectangular water jacket heating furnace - Google Patents
Rectangular water jacket heating furnace Download PDFInfo
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- CN111912103A CN111912103A CN202010662996.8A CN202010662996A CN111912103A CN 111912103 A CN111912103 A CN 111912103A CN 202010662996 A CN202010662996 A CN 202010662996A CN 111912103 A CN111912103 A CN 111912103A
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- furnace body
- water jacket
- smoke
- jacket heating
- heating furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/025—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using fluid fuel
- F24H7/0266—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using fluid fuel the transfer fluid being water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/66—Preheating the combustion air or gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/02—Casings; Cover lids; Ornamental panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/06—Arrangement of mountings or supports for heaters, e.g. boilers, other than space heating radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention relates to natural gas well station heating equipment, in particular to a rectangular water jacket heating furnace which comprises a furnace body, a heat exchange pipe group and a smoke and fire pipe, wherein the smoke and fire pipe is arranged at the lower side in the furnace body and used for heating liquid in the furnace body, the heat exchange pipe group is arranged at the upper side in the furnace body and used for circulating natural gas to be heated, the heat exchange pipe group is in heat conduction connection with the liquid in the furnace body, and the longitudinal section of the furnace body is rectangular. The problem of traditional water jacket heating furnace adopt the cylinder structure, cause water jacket heating furnace bottom to need utilize the saddle to sled the dress for the whole elevation of water jacket heating furnace is higher, has very big restriction to the transportation requirement is solved traditional cylinder water jacket heating furnace simultaneously when needing the thermal efficiency of promotion, can increase manufacturing cost, makes the product lose market competition is solved.
Description
Technical Field
The invention relates to natural gas well station heating equipment, in particular to a rectangular water jacket heating furnace.
Background
In the process of exploitation, transportation and application of natural gas, the natural gas is usually required to be decompressed, when the pressure drop is large, the natural gas temperature is greatly reduced, the natural gas is required to be heated, so that the natural gas is prevented from being precipitated and condensed into solid due to too low temperature, accidents caused by blocking of pipeline equipment are prevented, meanwhile, the natural gas is required to be kept at a certain temperature due to process requirements, and the natural gas temperature is usually kept by using a natural gas water jacket heating furnace.
The water jacket heating furnace is mainly used for heating natural gas in the gathering and transportation process and controlling the temperature fluctuation within a certain range so as to carry out the next process operation. At present, about 20000 water jacket heating furnaces are used in China, and a complete set of standard system of the conventional heating furnace is formed. Such as: specification of SYT 5262-.
Medium petroleum and medium petrochemicals are all put into consumption reduction and emission reduction planning vigorously, novel products are manufactured, and the out-dated capacity is eliminated. Therefore, if technical breakthrough can be realized in the water jacket heating furnace, good social and economic benefits can be created.
The traditional water jacket heating furnace is cylindrical (the diameter size series of a shell is clearly specified in the model and basic parameters of the heating furnace for SY/T0540-2013 petroleum industry), and the water jacket furnace in the frame is technically optimized for decades without obviously increasing the space. If the default frame is left out, the cylindrical innovation is designed to be rectangular, or good yield can be achieved.
Disclosure of Invention
The invention aims to provide a rectangular water jacket heating furnace, which is used for improving the heat efficiency of a water jacket furnace, reducing the consumption of fuel gas, reducing the operation and production cost and simultaneously being more convenient to operate.
In order to solve the technical problems, the invention adopts the following technical scheme:
the rectangular water jacket heating furnace comprises a furnace body, a heat exchange tube group and a smoke tube, wherein the smoke tube is arranged on the lower side inside the furnace body and used for heating liquid in the furnace body, the heat exchange tube group is arranged on the upper side inside the furnace body and used for circulating natural gas to be heated, the heat exchange tube group is in heat conduction connection with the liquid in the furnace body, and the longitudinal section of the furnace body is rectangular.
The further technical scheme is that the furnace body comprises a top plate, two wall plates and a bottom plate which are connected in a closed mode.
According to a further technical scheme, supporting seats are arranged on the inner sides of the two wallboards along the length direction of the furnace body, sliding supports are connected to the supporting seats in a sliding mode, and the heat exchange tube group is placed on the sliding supports.
According to a further technical scheme, the sliding support comprises two cross beam pipes and a plurality of longitudinal beam pipes uniformly arranged between the two cross beam pipes, reinforcing ribs and supporting plates used for connecting the heat exchange pipe sets are vertically arranged on the upper sides of the cross beam pipes, and limiting seats used for preventing the sliding support from deviating from the supporting seat are arranged on the lower sides of the cross beam pipes.
A further technical scheme is that the heat exchange tube group comprises a first-level coil and a second-level coil, the first-level coil is covered with a first-level coil inlet and a first-level coil outlet after the furnace body, the second-level coil is covered with a second-level coil inlet and a second-level coil outlet after the furnace body, and the first-level coil outlet and the second-level coil inlet are communicated through a throttling device.
According to a further technical scheme, the primary coil pipe and the secondary coil pipe respectively comprise a plurality of linear air conveying pipes communicated through U-shaped pipes.
According to a further technical scheme, the smoke and fire tube comprises a fire tube and a smoke tube, one end of the fire tube penetrates through the furnace body and is connected with a burner, the other end of the fire tube is connected with one end of the smoke tube, the other end of the smoke tube is connected with a smoke box arranged outside the furnace body, and a chimney is arranged on the upper side of the smoke box.
The technical scheme is that the fire tube comprises a plurality of fire tubes, wherein the fire tubes are symmetrically distributed on two sides of a fire tube, the outer diameter of the fire tube is 377mm, and the outer diameter of each fire tube is 114 mm.
According to a further technical scheme, a fuel gas preheating pipe is arranged in the furnace body, an inlet and an outlet of the preheating pipe are formed on the outer side of the furnace body, and the outlet of the preheating pipe is connected with the combustor through a gas guide pipe.
The top of the furnace body is connected with a water replenishing tank for replenishing liquid in the furnace body in an attaching manner.
Compared with the prior art, the invention has at least one of the following beneficial effects:
1. by arranging the furnace body into a rectangular frame structure, four corners can be increased compared with the original cylindrical shape, so that the spaces can be fully utilized to select and use the heat exchange tube sets and the smoke and fire tubes with larger apertures, and the heat exchange tube sets and the smoke and fire tubes can be effectively arranged, so that the thermal efficiency of the water jacket furnace is higher, the smoke exhaust temperature can be reduced, the fuel gas consumption is reduced, the production and operation cost is reduced, and the energy-saving and environment-friendly requirements of relevant enterprises on emission reduction and consumption reduction are met; the furnace body can be directly arranged on the skid seat without using a saddle to fix the lower end of the furnace body, so that the integral elevation of the furnace body is reduced, the transportation is more convenient, and the appearance is more beautiful;
2. the thicknesses of the top plate, the two wall plates and the bottom plate of the rectangular furnace body structure are different, and compared with the traditional cylindrical furnace body structure, the rectangular furnace body structure is formed by rolling steel plates with the same thickness, so that the traditional furnace body has more materials, and compared with the traditional cylindrical furnace body structure, the rectangular furnace body structure can greatly reduce the consumption of steel materials and reduce the production cost;
3. the rectangular structure is adopted, the bottom plate of the furnace body is of a flat plate structure, saddle support is not needed any more, and the top plate of the furnace body is also of a flat plate structure, so that the water replenishing tank can be directly designed into a square shape and directly mounted on the top plate, the effect of reducing the overall height of the furnace body is further achieved, meanwhile, due to the reduction of the height, water replenishing to the water replenishing tank can be completed on the ground, the water replenishing operation is more convenient, a ladder platform can be arranged at the top of the traditional furnace body for water replenishing, the scheme is safer and more convenient when the water replenishing tank is replenished with water, the ladder platform is not needed, and the effect;
4. by adopting the rectangular structure, the appearance is square and beautiful, and the transportation is more convenient.
Drawings
FIG. 1 is a schematic structural view of a rectangular water jacket heating furnace according to the present invention.
Fig. 2 is a schematic view of direction a in fig. 1.
Fig. 3 is a schematic view of direction B in fig. 1.
Fig. 4 is a schematic view of section C-C in fig. 1.
Fig. 5 is a schematic structural diagram of the heat exchange tube set of the present invention.
Fig. 6 is a schematic view of section E-E in fig. 5.
Fig. 7 is a schematic view of section F-F in fig. 5.
Fig. 8 is a side view of the sliding support of the present invention.
Fig. 9 is a top view of the sliding support of the present invention.
Fig. 10 is a sectional view of a conventional water jacket heating furnace.
FIG. 11 is a sectional view of another water jacket heating furnace of the prior art.
Icon: 1-furnace body, 101-top plate, 102-wall plate, 103-bottom plate, 104-support base, 105-rear cover, 106-smoke box cover, 107-insulating layer, 108-frame section steel, 2-heat exchange tube set, 201-primary coil, 202-primary coil inlet, 203-primary coil outlet, 204-secondary coil, 205-secondary coil inlet, 206-secondary coil outlet, 207-U-shaped tube, 208-gas pipe, 3-smoke pipe, 301-fire tube, 302-smoke pipe, 303-smoke box, 304-chimney, 305-middle smoke box, 4-sliding support, 401-beam pipe, 402-beam pipe, 403-reinforcing rib, 404-support plate, 405-limiting seat, 5-fuel gas pipe, 501-inlet of preheating pipe, 502-outlet of preheating pipe, 6-water replenishing tank and 7-saddle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example (b):
fig. 1 to 11 show a preferred embodiment of the rectangular water jacket heating furnace of the present invention, the rectangular water jacket heating furnace in this embodiment specifically includes a furnace body 1, a heat exchange tube group 2 and a smoke tube 3, the smoke tube 3 is disposed at the lower side inside the furnace body 1 for heating the liquid inside the furnace body 1, the heat exchange tube group 2 is disposed at the upper side inside the furnace body 1 for circulating the natural gas to be heated, the heat exchange tube group 2 is in heat conduction connection with the liquid inside the furnace body 1, and the longitudinal section of the furnace body 1 is rectangular.
The furnace body 1 is filled with water, the water in the furnace body 1 is heated by high-temperature flue gas in the smoke and fire tube 3, the water is heated to 80-90 ℃, the heated water heats natural gas in the heat exchange tube group 2 in a heat transfer mode, the natural gas is heated to 40-50 ℃ from 10-20 ℃, and accidents caused by solid precipitation and condensation of hydrates due to too low temperature of the natural gas and blocking of pipeline equipment are prevented.
Wherein, the longitudinal direction is the plane direction of the width and the height in the furnace body 1 and is also the direction of the C-C section in figure 1.
Through setting up furnace body 1 to the frame-type structure of rectangle, furnace body 1 alright direct mount does not need to use saddle 7 to fix the lower extreme of furnace body 1 on the sledge seat, makes the holistic elevation of furnace body 1 reduce, and is more convenient during the transportation to the appearance is more pleasing to the eye.
By adopting the rectangular structure, four corners can be increased compared with the original cylindrical shape, so that the heat exchange tube group 2 and the smoke and fire tube 3 with larger apertures can be selected and used by fully utilizing the spaces, and the heat exchange tube group 2 and the smoke and fire tube 3 can be effectively arranged.
The heat insulation layer 107 is arranged on the outer side of the furnace body 1, and the heat insulation layer 107 can reduce heat loss and improve heat efficiency. The outer side of the heat-insulating layer 107 of the furnace body 1 is also provided with frame section steel 108, and the frame section steel 108 is used for enhancing the structural strength of the furnace body 1 and plays a role in fixing and supporting the heat-insulating layer 107.
As shown in fig. 1, a smoke box cover 106 is installed on the left side of the furnace body 1, and a rear cover 105 is installed on the right side, wherein both the smoke box cover 106 and the rear cover 105 are detachably installed, that is, the inside of the furnace body 1 can be repaired and maintained by opening the smoke box cover 106 and the rear cover 105.
As shown in fig. 2 to 4, the furnace body 1 includes a top plate 101, two wall plates 102 and a bottom plate 103 which are connected in a closed manner. The thickness of roof 101, two blocks of wallboard 102 and bottom plate 103 of rectangular furnace body 1 structure is selected and can be the diverse, for traditional 1 structure of cylinder furnace body, need adopt the sheet steel book to make and form, causes traditional furnace body 1's material more, and can carry out respective selection through the thickness that makes roof 101, two blocks of wallboard 102 and bottom plate 103 in this scheme to make the required consumptive material of manufacturing and reduce greatly, can effectively reduction in production cost.
The traditional cylindrical furnace body 1 is made by rolling plate steel, the wall thickness of the furnace body 1 is 12mm or 16mm, for example, the first used water jacket heating furnace (as shown in fig. 10) has a cylindrical wall of 12mm, the length and width of the external dimension is 5800 x 1500 x 2200mm, the nominal dimension of the furnace body 1 is DN1200 cylindrical, and the wall thickness of the furnace body 1 is the same everywhere due to the cylindrical rolling structure, so that the net weight of the manufactured furnace body 1 is 2203 kg; for example, in a second conventional water jacket heating furnace (as shown in fig. 11), the wall of the furnace body 1 is 16mm, the length and width of the external dimension is 7000 x 1600 x 2400mm, the nominal dimension of the furnace body 1 is DN1400 cylinder, and the wall thickness of the furnace body 1 is the same everywhere due to the cylindrical rolling structure, so that the net weight of the manufactured furnace body 1 is about 3612 kg; the wall thicknesses of the top plate 101, the two wall plates 102 and the bottom plate 103 of the furnace body 1 adopting the rectangular structure in the invention can be respectively set to be 12mm, 8mm and 6mm, wherein the wall thicknesses of the top plate 101, the two wall plates 102 and the bottom plate 103 can have a negative deviation of 0.3mm, the length and width of the external dimension is 5800 x 1400mm, and the nominal dimension of the furnace body 1 is 1150 x 1150 rectangle, because the wall thicknesses of the furnace body 1 are different, the net weight of the final furnace body 1 is only 1743kg, the mass of the frame section steel 108 is included, under the reinforcing effect of the frame section steel 108, the furnace body 1 can be reinforced, the thicknesses of the wall walls of the top plate 101, the two wall plates 102 and the bottom plate 103 can be thinner, the weight is remarkably reduced, the required material is greatly reduced, the material of the furnace body 1 is saved by about 26 percent compared with the first water jacket heating furnace, compared with the second water jacket heating furnace, the material is saved by about 107 percent, and the production cost can be effectively reduced.
The inner sides of the two wall plates 102 are respectively provided with a supporting seat 104 along the length direction of the furnace body 1, the supporting seats 104 are connected with a sliding support 4 in a sliding manner, and the heat exchange tube group 2 is placed on the sliding support 4. The sliding support 4 comprises two cross beam tubes 401 and a plurality of longitudinal beam tubes 402 uniformly arranged between the two cross beam tubes 401, reinforcing ribs 403 and a supporting plate 404 for connecting the heat exchange tube group 2 are vertically arranged on the upper sides of the cross beam tubes 401, and limiting seats 405 for preventing the sliding support 4 from deviating from the supporting seat 104 are arranged on the lower sides of the cross beam tubes 401.
The support base 104 is arranged on the inner sides of the two wall plates 102 of the furnace body 1, the sliding support 4 is arranged on the support base 104 in a sliding mode, the heat exchange tube group 2 is arranged on the sliding support 4, and the heat exchange tube group 2 can be disassembled and assembled in a sliding installation mode.
As shown in fig. 8 and 9, the sliding support 4 is specifically provided with two cross beam pipes 401 and four longitudinal beam pipes 402, the two cross beam pipes 401 are respectively arranged on the supporting seats 104 of the two wall plates 102, two ends of the four longitudinal beam pipes 402 are respectively connected to the two cross beam pipes 401, and are uniformly arranged along the length direction of the beam pipe 401, so that the heat exchange tube group 2 can be well supported by the sliding support 4 formed by the beam pipe 401 and the longitudinal beam pipe 402, while the support plate 404 on the upper side of the beam tube 401 further plays a role of auxiliary support fixing, the lower sides of the beam tubes 401 are provided with limiting seats 405, as shown in fig. 4, the limiting seats 405 are close to the supporting seats 104, the limiting seats 405 on the lower sides of the two beam tubes 401 are matched with the supporting seats 104 on the two sides, so that the sliding bracket 4 can be prevented from sliding left and right on the supporting seats 104, and the occurrence of a situation such as deviation in the process of sliding the slide holder 4 on the support base 104 can be avoided.
The heat exchange tube set 2 adopts two-stage heating (heat exchange), and comprises a first-stage coil 201 and a second-stage coil 204, wherein the first-stage coil 201 forms a first-stage coil inlet 202 and a first-stage coil outlet 203 on the rear cover 105 of the furnace body 1, the second-stage coil 204 forms a second-stage coil inlet 205 and a second-stage coil outlet 206 on the rear cover 105 of the furnace body 1, and the first-stage coil outlet 203 and the second-stage coil inlet 205 are communicated through a throttling device. As shown in FIG. 5, both the primary coil 201 and the secondary coil 204 include a plurality of linear air delivery tubes 208 that communicate through a U-shaped tube 207.
The throttling device is an angle type throttling valve and the like (not shown in the figure), natural gas with high pressure and low temperature enters from a primary coil inlet 202 and flows in the primary coil 201, so that the natural gas in the primary coil 201 is heated for the first time by hot water in the furnace body 1 in a heat transfer mode, the heated natural gas flows out from a primary coil outlet 203, the throttling, pressure reducing and temperature reducing are carried out for the first time by the throttling device, after the throttling, pressure reducing and temperature reducing are carried out for the first time, the natural gas enters into a secondary coil 204 from a secondary coil inlet 205 and flows in the secondary coil 204, so that the natural gas in the secondary coil 204 is heated for the second time by the hot water in the furnace body 1 in the heat transfer mode, the natural gas after the second heating flows out from a secondary coil outlet 206, the throttling, pressure reducing and temperature reducing are carried out again by the, the next subsequent processing can be performed.
As shown in fig. 6 and 7, the distribution of the primary coil 201 and the secondary coil 204 in the present invention is shown, wherein the primary coil 201 is composed of 16 linear air pipes 208, the secondary coil 204 is composed of 14 linear air pipes 208, and two air pipes 208 connected to each other are connected by a U-shaped pipe 207, so that the total heat exchange area of the coil reaches 13.1 square meters, compared with the existing design, for example, the heat exchange area of the coil of the first water jacket heating furnace is 11.3 square meters, and the heat exchange area of the coil of the second water jacket heating furnace is 9.3 square meters.
The smoke and fire tube 3 comprises a fire tube 301 and a smoke tube 302, one end of the fire tube 301 penetrates through the furnace body 1 and is connected with a burner, the other end of the fire tube 301 is connected with one end of the smoke tube 302 through a middle smoke box 305, the other end of the smoke tube 302 is connected with a smoke box 303 (also called as a tail smoke box) arranged outside the furnace body 1, and a chimney 304 is arranged on the upper side of the smoke box 303. The smoke tube 302 is provided in plurality and is symmetrically distributed on both sides of the fire tube 301, the outer diameter of the fire tube 301 can be set to 377mm, the wall thickness of the fire tube 301 can be set to 10mm, the outer diameter of the smoke tube 302 can be set to 114mm, and the wall thickness of the smoke tube 302 can be set to 5 mm.
The fuel gas is ignited by the burner, so that high-temperature flue gas is formed in the fire tube 301 through combustion, the high-temperature flue gas sequentially passes through the fire tube 301, the smoke tube 302 and the smoke box 303 and is finally discharged from the chimney 304, and when the high-temperature flue gas passes through the fire tube 301 and the smoke tube 302, water in the furnace body 1 can be heated in a heat transfer mode. The fire tube 301 and the smoke tube 302 adopted in the invention are the fire tube 301 and the smoke tube 302 with larger calibers, which can ensure the heat efficiency of the smoke and fire tube 3, and the smoke temperature at the exhaust port of the chimney 304 is lower, and the heat taken away by the smoke can be well controlled.
The burner comprises a main burner, an ignition burner and an explosion-proof high-energy igniter, wherein the specification model of the main burner is QYRSQ type, the specification model of the ignition burner is QYDHRSQ type, and the specification model of the explosion-proof high-energy igniter is QYGD-II type.
A fuel gas preheating pipe 5 is arranged in the furnace body 1, the fuel gas preheating pipe 5 forms a preheating pipe inlet 501 and a preheating pipe outlet 502 at the outer side of the furnace body 1, and the preheating pipe outlet 502 is connected with a burner through a gas guide pipe. The top of the furnace body 1 is connected with a water replenishing tank 6 for replenishing liquid in the furnace body 1.
The fuel gas preheating pipe 5 is arranged in the furnace body 1 and used for preheating fuel gas of a burner, so that the fuel gas can be combusted sufficiently, the heat efficiency of the fuel gas combustion is improved, wherein the fuel gas preheating pipe 5 forms a preheating pipe inlet 501 and a preheating pipe outlet 502 on a wall plate 102 of the furnace body 1, and the preheating pipe outlet 502 is connected to the burner through a gas guide pipe.
Because the furnace body 1 adopts a rectangular structure, the top plate 101 of the furnace body 1 is of a flat plate structure, so the water replenishing tank 6 can be directly designed into a square shape and directly installed on the top plate 101 without using structures such as a bracket for auxiliary installation, and an operation platform is not required to be arranged at the top, thereby further reducing the whole elevation of the furnace body 1. Because traditional water jacket heating furnace is the cylinder and needs direct isotructure to assist installation moisturizing case 6 for 6 water inlet elevations of moisturizing case of traditional water jacket heating furnace are 2300mm, and in this invention, the water inlet elevation of moisturizing case 6 only is 1600mm, and operating personnel can be on the level land alright carry out the moisturizing operation, no longer need the platform supplementary, the moisturizing operation of being convenient for more promotes the security simultaneously.
The parameter comparison table of the water jacket heating furnace used by the invention and the first water jacket heating furnace and the second water jacket heating furnace is as follows:
analysis was performed from the above table:
compared with the cylindrical structure adopted by the traditional water jacket heating furnace, the furnace body adopting the rectangular structure has the following advantages in appearance:
1. the rectangular water jacket heating furnace adopts a frame type structure, a saddle 7 is omitted, and the appearance is more attractive.
2. The top plate 101 is a flat plate, so that the refill tank 6 can be directly designed into a square shape and directly mounted on the top plate 101, and thus the overall height is greatly reduced.
3. The water jacket heating furnace all installs on the sledge seat, sledge seat height is about 250mm, consequently 6 water inlet elevations of water supply tank of traditional water jacket heating furnace mouth of pipe are about 2300mm, still need install operation platform (ladder platform) at the top so that the moisturizing operation usually, and 6 water inlet elevations of water supply tank of rectangle water jacket heating furnace are only 1600mm, the operation personnel can operate on the level land completely, no longer need the platform, consequently, be more convenient for operate and improve the security, can also play cost-effective effect simultaneously.
4. After the water jacket heating furnace set sledge, the whole elevation 3300mm of traditional water jacket heating furnace has the restriction to the transportation requirement, and rectangle water jacket heating furnace elevation 1700mm does not have the transportation restriction completely, and the degree of convenience improves greatly during the transportation.
5. Compared with the prior cylindrical structure, the structure has the advantages that the rectangular structure is adopted, four corners of the original cylindrical shape can be effectively utilized, and the internal structure (the space is fully utilized to arrange the smoke and fire tube 3 and the heat exchange tube group 2) can be better arranged.
6. The traditional water jacket heating furnace is cylindrical and is coiled by a steel plate, the rectangular water jacket heating furnace is of a frame structure and is formed by splicing a bottom plate 103, two wall plates 102 and a top plate 101, so that the thicknesses of the plates are different, through calculation and analysis, the furnace body 1 of the invention can meet the strength requirement by adopting the bottom plate 103 with the thickness of 12mm, the wall plates 102 with the thickness of 8mm and the top plate 101 with the thickness of 6mm, compared with the integral wall thickness of 12mm or 16mm of the traditional water jacket heating furnace, the required materials are greatly reduced, the material of the furnace body 1 is saved by 26 percent relative to the first water jacket heating furnace, the material of the furnace body 1 is saved by 107 percent relative to the second water jacket heating.
In view of arrangement and distribution of the smoke and fire tubes 3 and the heat exchange tube sets 2, the arrangement in the first water jacket heating furnace adopts a structure of small smoke and fire tubes 3 and large heat exchange tube sets 2, the size and the number of the smoke and fire tubes 3 are smaller so as to arrange more heat exchange tubes, and the small smoke and fire tubes 3 cause higher outlet smoke temperature under the same power, so that the heat efficiency is lower and the heat energy loss is larger; the arrangement in the second water jacket heating furnace adopts a structure of 3 groups of large smoke and fire tubes and 2 groups of small heat exchange tube groups, the efficiency of the smoke and fire tubes 3 is preferentially ensured, so that the smoke temperature at the outlet is lower, the heat taken away by smoke can be well controlled, but the arrangement space of the heat exchange tube groups 2 is less, and a larger tube diameter is selected for increasing the heat exchange area, but the large tube diameter means that the distance between the arranged tubes is increased, and an external connecting tube and a valve are both larger, so that two-stage heating cannot be arranged, and the surface of the large tube diameter is not good when the medium operating pressure is higher by adopting one-stage heating; the water jacket heating furnace is rectangular, the four corners of the water jacket heating furnace can be effectively utilized greatly, the larger smoke and fire tube 3 and the secondary heat exchange tube set 2 can be considered simultaneously, and the complementary advantages are realized. The prior cylindrical furnace body 1 does not adopt a structure of a larger smoke and fire tube 3 and a secondary heat exchange tube group 2, and mainly has the problems of cost and cost performance, if the prior cylindrical furnace body 1 adopts the larger smoke and fire tube 3 and the secondary heat exchange tube group 2, the cylinder body is inevitably enlarged, so the cost is obviously increased, thereby the market competitiveness is lost, and the prior specification and model are optimal products selected by market excellence.
The heat efficiency cannot be improved by arranging more smoke tubes 3 in the traditional water jacket heating furnace, mainly because the traditional water jacket heating furnace is applied for a long time, the structural arrangement is a result after long-term optimization, and the smoke tubes 3 are simply added without practical value, for example, in the first water jacket heating furnace, the smoke tubes 302 are directly welded on the fire tube 301, the structure directly limits the number of the smoke tubes 302 not to be too large, otherwise, construction cannot be carried out, and the change of the structure that the smoke tubes 302 are directly welded on the fire tube 301 can cause that internal structures such as fuel gas pipelines and the like need to be correspondingly adjusted, so the practical value is limited; the second water jacket heating furnace is mainly characterized in that the arrangement space of the heat exchange tube sets is insufficient, the smoke and fire tubes 3 can meet the requirements under the heat exchange tube sets with the number, and the support seats 104 of the heat exchange tube sets 2 on the left side and the right side limit, so that more smoke and fire tubes 3 are not arranged.
In the container industry, the area of the circle is the largest under the condition of considering the same circumference, so that the cylindrical structure is adopted, and the shape of the furnace body 1 is not changed when the heat efficiency is improved while the cost is reduced.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (10)
1. A rectangular water jacket heating furnace is characterized in that: the natural gas heating furnace comprises a furnace body (1), a heat exchange tube set (2) and a smoke tube (3), wherein the smoke tube (3) is arranged on the lower side inside the furnace body (1) and used for heating liquid in the furnace body (1), the heat exchange tube set (2) is arranged on the upper side inside the furnace body (1) and used for circulating natural gas to be heated, the heat exchange tube set (2) is in heat conduction connection with the liquid in the furnace body (1), and the longitudinal section of the furnace body (1) is rectangular.
2. The rectangular water jacket heating furnace according to claim 1, wherein: the furnace body (1) comprises a top plate (101), two wall plates (102) and a bottom plate (103) which are connected in a closed mode.
3. The rectangular water jacket heating furnace according to claim 2, wherein: the inner sides of the two wall plates (102) are respectively provided with a supporting seat (104) along the length direction of the furnace body (1), the supporting seats (104) are connected with a sliding support (4) in a sliding mode, and the heat exchange tube set (2) is placed on the sliding support (4).
4. The rectangular water jacket heating furnace according to claim 3, wherein: the sliding support (4) comprises two cross beam pipes (401) and a plurality of longitudinal beam pipes (402) evenly arranged between the two cross beam pipes (401), reinforcing ribs (403) and a supporting plate (404) used for connecting the heat exchange pipe set (2) are vertically arranged on the upper sides of the cross beam pipes (401), and limiting seats (405) used for preventing the sliding support (4) from deviating from the supporting seat (104) are arranged on the lower sides of the cross beam pipes.
5. The rectangular water jacket heating furnace according to any one of claims 1 to 4, wherein: the heat exchange tube set (2) comprises a first-stage coil (201) and a second-stage coil (204), the first-stage coil (201) forms a first-stage coil inlet (202) and a first-stage coil outlet (203) on a rear cover (105) of the furnace body (1), the second-stage coil (204) forms a second-stage coil inlet (205) and a second-stage coil outlet (206) on the rear cover (105) of the furnace body (1), and the first-stage coil outlet (203) is communicated with the second-stage coil inlet (205) through a throttling device.
6. The rectangular water jacket heating furnace according to claim 5, wherein: the primary coil pipe (201) and the secondary coil pipe (204) both comprise a plurality of linear air conveying pipes (208) communicated through U-shaped pipes (207).
7. The rectangular water jacket heating furnace according to any one of claims 1 to 4, wherein: the smoke and fire tube (3) comprises a fire tube (301) and a smoke tube (302), one end of the fire tube (301) penetrates out of the furnace body (1) and is connected with a burner, the other end of the fire tube is connected with one end of the smoke tube (302), the other end of the fire tube (301) is connected with a smoke box (303) arranged outside the furnace body (1), and a chimney (304) is arranged on the upper side of the smoke box (303).
8. The rectangular water jacket heating furnace according to claim 7, wherein: the fire tube (302) is provided with a plurality of smoke tubes, the smoke tubes are symmetrically distributed on two sides of the fire tube (301), the outer diameter of each smoke tube (302) is 377mm, and the outer diameter of each smoke tube (302) is 114 mm.
9. The rectangular water jacket heating furnace according to claim 7, wherein: the furnace is characterized in that a fuel gas preheating pipe (5) is arranged in the furnace body (1), the fuel gas preheating pipe (5) forms a preheating pipe inlet (501) and a preheating pipe outlet (502) at the outer side of the furnace body (1), and the preheating pipe outlet (502) is connected with the combustor through a gas guide pipe.
10. The rectangular water jacket heating furnace according to any one of claims 1 to 4, wherein: the top of the furnace body (1) is connected with a water replenishing tank (6) for replenishing liquid in the furnace body (1) in an attaching manner.
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| CN202010662996.8A CN111912103A (en) | 2020-07-10 | 2020-07-10 | Rectangular water jacket heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010662996.8A CN111912103A (en) | 2020-07-10 | 2020-07-10 | Rectangular water jacket heating furnace |
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| CN116558116A (en) * | 2023-07-05 | 2023-08-08 | 四川凌耘建科技有限公司 | Full-automatic vacuum phase-change furnace |
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Application publication date: 20201110 |