CN2088227U - Wide-conduit plate heat-exchanger - Google Patents

Abstract

The utility model discloses a wide fluid channel plate type heat exchanger, and is characterized in that a carbon steel plate whose thickness is 2.5-4.0 mm is used as a heat exchange plate sheet. Steel ribs which are arranged in a netlike permutation are welded additionally in the heat exchange plate sheet to form the fluid channels whose fluid channel radial widths are 6-20 mm. The fluid channels of the heat exchange plate sheet are connected in series and in parallel. The peripheries of the fluid channels are welded for sealing by steel rod to form a heat exchanger core body. Compared with the prior corrugated plate type heat exchangers, the utility model has the wider radial fluid channels; the series connection of the multi flow passages can be realized; heat supply circulation can be improved; flow ratio and temperature differential requirement which are required by various occasions can be satisfied; expensive stainless steel can be saved; cost can be reduced by 50%.

Description

Wide-conduit plate heat-exchanger

The utility model belongs to the heat supplication and consumption switch.

In heating system, the plate type heat exchanger of employing mostly is corrugated plate-type heat exchangers.Be arranged in parallel by in groups heat exchanger fin and form a plurality of runners, add hot water and be heated water, relies on adjacent heat exchanger plates realization heat exchange respectively from the adjacent fluid channels reverse flow.This type heat exchange plate is to be pressed into section with stainless sheet steel to be corrugated, crest height of wave 3.5～4.0mm, the about 15mm of peak separation.With plate and the radially wide fluid passage of the superimposed formation 3.5～4.0mm of plate, lean mutually by the thin plate crest, so as to supporting the pressure reduction between runner, control this width of flow path.Curved channel between fluid leans a little by crest forms the curve turbulent flow.The heat exchange plate upper and lower offers the runner connecting hole, and pressured tight rubber washer connects runner, or cuts off and should not connect the opposite side runner.The rubber washer that compresses is to be screwed with bolt by the thick clamping plate of heat exchanger both sides and pull bar to fix.Add hot water and be heated water two side runners, being together in parallel by a plurality of single channels forms one group of heat exchange process, and several groups of heat exchange processes are together in series, and reaches the flow channel length that needs.With the pressure-bearing clamping plate of both sides through pull bar with the whole tension of overlapping good heat exchange plate, reach and guarantee sealing, do not make and scurry pressure, earial drainage between runner and to the external pressure release of heat exchanger, immersion.

The heat transfer coefficient height of corrugated plate-type heat exchangers can be high to 2～3 times than pipe heat exchanger, thereby the comparable tubular type of heat exchange area is lacked 2～3 times, and the consumption steel reduces, and the compactness side of combination simultaneously is whole, takes up an area of littler 3～5 times than tubular type.But, be used in the heat supply, have the following disadvantages: the runner radial width is narrow.These type characteristics are, plate is wanted corrugating, consider that thin plate is not anti-corrosion so plate need approach (1mm following), thus must use stainless steel, because of thin plate rigidity limited, it is too high that crest can not be done, it is also difficult that too high rubber parts is done sealing, thereby the runner plate spacing that constitutes is that the runner radial width is also just narrow, only 3.5～4.0mm, in addition crest to lean the strong point closeer, thereby form big resistance and easily dirty plug.If require the serial connection flow process long to 4m, then resistance can arrive tens meter water columns, accounts for the total (pumping) head of the logical circulating pump of a Daepori.So difficult realization multipaths is connected in series the runner that extends.And the length overall of runner is to be complementary with the radial width of its runner, just can reach certain heat transfer temperature difference, and the temperature rise and the runner that are heated water after the heat transfer grow up to direct ratio, is inversely proportional to runner radial width and flow velocity.Thereby when runner was too short, temperature rise diminished, and did not reach requirement as seen.Confined when too short in the runner length overall of equipment, have only the flow velocity that reduces both sides simultaneously, could improve temperature rise and reach requirement, but this just to reduce the exchange capability of heat of equipment, just to increase dress more equipment capacity.The corrugated plate-type heat exchangers stainless steel materials, expensive 10 times than ordinary carbon steel material valency, the equipment of making is than expensive 2.0～2.5 times of common iron system.Stainless steel with being necessary, is used then unnecessary to the heating domestic hot-water to technologies such as oil, chemical industry.Use rubber seal, withstand voltage gentle problem of aging is arranged, difficulty is used for high-temperature medium and steam heat-exchanging.

The purpose of this utility model, be to provide a kind of runner that can cause wide radial spacing, and can arrange the heat exchanger of the series and parallel combination of runner, flow process arbitrarily, so that under the limitation that is not subjected to resistance, appropriate and the optimized relation of arranging runner length overall and runner radial width and flow velocity properly, to reach the parameter request of different occasions, overcome big flow, the low temperature difference, highly energy-consuming heat supply problem; Reduce resistance and dirty plug, thereby improve heat supply circulation and quality; Cut down the consumption of energy, economical with materials reduces and takes up an area of and investment.

Wide-runner plate heat exchanger of the present utility model, by heat exchanger plates, add hot water and be heated water pipe section, side plate, pull bar, bearing and form, it is characterized in that, make heat exchange plate with thickness 2.5～4.0mm carbon steel plate, in heat exchange plate, add the steel rib that welds netted arrangement, bear pressure reduction between runner to support heat exchange plate, constituent ratio corrugated plating spacing is wide 2～5 times, the runner radial width is the fluid passage of 6～20mm.And can carry out runner mutually also, string combination, according to the flow velocity requirement, determine runner number in parallel at 1～6, proportionate relationship according to runner length overall, runner radial width and the temperature difference, decision serial connection flow process number is at 2～8, and the runner periphery is with steel bar soldering and sealing, thus the composition heat exchanger core body; Heat exchange plate has the connector of runner by the combination of channels mode, between runner, be communicated with connecting short tube, connected entrance is the import and export of fluid in the runner, be arranged in place, diagonal angle, heat exchange plate two ends, make that streamline becomes diagonal in the runner, adjacent two side runners to flow to the diagonal dividing plate intersected with each other, avoid the off-set phenomenon on one side of each limp of existing corrugated plating streamline; Being arranged to of rib, grain direction in the following current road, and, reticulate layout perpendicular to this streamline, mutual spacing 50～200mm, thus obtain the main stream line and the eddy current of curve; Core body bottom dress decontamination valve, core body top dress charges into the interface of scale remover, and makes these interface both sides shared, and the venting of double as water-filling, observes stoppage in transit phase dehydration whether test point, prevents air inlet generation oxygen corrosion; And double as in particular cases, by adding the tube connector that the hot water side direction is heated water side constant pressure supply water.

The utility model wide-runner plate heat exchanger is compared with existing corrugated plate-type heat exchangers, can get width of flow path between the plate of any needs, thereby greatly improve flow resistance and dirty plug problem, saves pump power, improves the heat supply circulation, enlarges heat range of heat and scope; Saved the expensive stainless steel material, cost only is 40% of a corrugated plate dst; Because resistance is less, can realize multithread road serial connection, satisfy flow-rate ratio and temperature difference needs that various occasions require; Non-disconnectable formula does not have rubber parts, can adapt to higher temperature pressure, adapts to vapour and changes water-to-water heat exchanger.As 19.2 square meter heat exchangers, every square meter heat exchange area is saved 14 kilograms of corrosion resistant plates than corrugated plate-type heat exchangers, and 100 ten thousand kilocalorie heat supplies are saved 448 kilograms, are worth 1.26 ten thousand yuan; Because resistance reduces to about the 1.78m water column, can economize on electricity 75% approximately than ordinary circumstance, meet the requirements because of making actual flow, the temperature difference, avoid the heat supply of the little temperature difference of big flow, thereby economized on electricity 50% during for the little temperature difference of the big flow of ratio of specific heat of as much.

Below in conjunction with drawings and Examples, the utility model is further described.

Fig. 1 is the front view of wide-runner plate heat exchanger.

Fig. 2 is the side view of wide-runner plate heat exchanger.

Fig. 3 is the vertical view of wide-runner plate heat exchanger.

Fig. 4 is the structure chart of heat exchanger plates.

Fig. 5 is the flow chart of 3 runner parallel connections, 4 groups of runner series connection in parallel.

Fig. 6 is the flow process perspective view of 2 runner parallel connections, 2 groups of runner series connection in parallel.

As seen from the figure, wide-runner plate heat exchanger, enter the mouth 21 and export 22 by heat exchanger plates 1, heating pipe, be heated pipe inlet 23 and outlet 24, side plate 3, pull bar 4, bearing 5 are formed, heat exchanger plates is the carbon steel plate of thickness 2.5～4.0mm, area 400～the 1300mm of each plate, the steel rib diameter that adds weldering onboard is 6～20mm, grain direction in the following current road, reticulate layout perpendicular to this streamline, mutual spacing 50～200mm; At place, diagonal angle, heat exchanger fin two ends, offer runner mouth 6, form 6 runners by 7 heat exchanger fins are superimposed, each runner radial width 6～20mm, become 3 groups of runners in parallel, add hot water and be heated water, rely on adjacent heat exchanger plates to carry out heat exchange respectively by 1,3,5 runners and the relative reverse flow of 2,4,6 runners; Equally, 7～12 runners are also formed 3 groups of parallel fluid channels, add hot water and be heated water respectively by 7,9,11 runners and 8,10,12 runner reverse flows, rely on adjacent heat exchanger plates to carry out heat exchange, so form 6 parallel heat exchanging plate groups, again these 6 parallel heat exchanging plate groups are together in series successively, constitute the heat exchanger core body of 6 serial connection flow processs, gross thickness is at 430mm, and total heat exchange area reaches 19.2 square meters; Establish decontamination valve 7 in the core body bottom, the inlet 8 of the scale remover of packing into is established on core body top, the usefulness of the enter the mouth venting of 8 double as water-fillings, dehydration detection, constant pressure supply water.

Drop to 80 ℃ when adding hot water by 130 ℃, lower the temperature 50 ℃ the time, but be heated the water temperature rise,, heat up 25 ℃ by 70 ℃ to 95 ℃, design current velocity is: add hot water 0.52 meter per second, be heated water 0.61 meter per second, design discharge is: add 13125 kilograms of hot water/time, be heated 26250 kilograms in water/time, promptly under lower drag and normal flow, reach required heat supply requirement.

Claims (3)

1, a kind of wide-runner plate heat exchanger, by heat exchanger plates, add hot water and be heated water pipe section, side plate, pull bar, bearing and form, it is characterized in that, make heat exchange plate with thickness 2.5～4.0mm carbon steel plate, add the steel rib that welds netted arrangement in heat exchange plate, constituting the runner radial width is the fluid passage of 6～20mm; The heat exchange plate runner is carried out series and parallel, with steel bar soldering and sealing, form heat exchanger core body at the runner periphery; Heat exchange plate has the connector of runner by the combination of channels mode, is communicated with connecting short tube between runner, and connected entrance is arranged in place, diagonal angle, heat exchange plate two ends, makes that streamline becomes diagonal in the runner, adjacent two side runners to flow to the diagonal dividing plate intersected with each other; Rib be arranged to grain direction in the following current road, and, be netted layout perpendicular to this streamline, mutual spacing 50～200mm, core body bottom dress decontamination valve, core body top dress charges into the interface of scale remover.

2, wide-runner plate heat exchanger as claimed in claim 1 is characterized in that, heat exchange plate runner number in parallel is at 1～6.

3, wide-runner plate heat exchanger as claimed in claim 1 is characterized in that, heat exchange plate serial flow number is at 2～8.

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