TWI804007B - Water shower economizer structure - Google Patents

Abstract

A water shower economizer structure, comprising a preheating cylinder connected to a heating cylinder of a boiler; a water tank is arranged under the preheating cylinder, and the water tank communicates with the inner chamber of the preheating cylinder; one section The water supply pipe valve and pump assembly of the coal burner pressurize and connect a part of the water in the water tank to at least one spray pipe provided in the inner chamber. In the internal chamber; the hot air flow through the heating cylinder flows to the internal chamber of the preheating cylinder, and the sprayed water is heated and then dropped into the water tank, and the repeated spraying heating makes the water in the water tank The water becomes preheated water; a boiler water supply pipe valve and pump assembly transport the preheated water in the water tank to the water collection chamber of the boiler under pressure for the boiler to produce steam.

Description

Water shower economizer structure

The invention relates to energy-saving equipment for boilers, in particular to a coal economizer for boilers.

Economizer is a kind of energy-saving equipment for boilers. Its working principle is to use the heat exchange between flue gas and feed water, so that the water sent to the boiler has been preheated, so the fuel (coal) consumption required by the boiler is reduced. To achieve the purpose of energy saving.

FIG. 1 is a schematic diagram of a traditional boiler 20 and an economizer 10 . The interior of the economizer 10 includes a preheating chamber 11 and a preheating pipe 12 arranged in the preheating chamber 11 . The preheating chamber 11 communicates with the heating chamber 21 of the boiler 20 via a connecting pipe 13 . The external water source enters through the pipe valve and fills the preheating pipe 12 . The water in the preheating pipe 12 is communicated to a water collection chamber 22 of the boiler 20 via a delivery pipe 14 . The heating chamber 21 of the boiler 20 is provided with a heating pipe 23 , and the water in the heating pipe 23 comes from the water collection chamber 22 . The external hot air flow is introduced into the heating chamber 21 of the boiler 20 through the fluid power mechanism 29, so that the water in the heating pipe 23 is heated by heat exchange to generate steam, which is collected in a steam collection chamber 24 of the boiler 20, and then passes through the steam output pipe The road 25 is delivered to an object (not shown) that needs to use steam heat energy. The hot air in the heating chamber 21 flows through the heating chamber 21 and then flows to the preheating chamber 11 of the economizer 10, so that the water in the preheating pipe 12 in the preheating chamber 11 is heated and preheated, and the preheated water is transported to The water in the water collecting chamber 22 of the boiler 20 and the heating tube 23 has been preheated, thereby reducing the heating time and heat energy consumed by the boiler 20 to produce steam.

As shown in Fig. 2, the preheating chamber 11 of the economizer 10 also includes an overheating mechanism 15, and the overheating mechanism 15 is Described in TWI739221. The superheating mechanism 15 uses the hot steam in the steam collection chamber 24 of the boiler 20, and makes the hot gas flow in the preheating chamber 11 pass through the heat exchange of the heating mechanism 15 to generate superheated gas, which heats the water in the preheating pipe 12, which is more effective. Use thermal energy.

The economizer 10 in Fig. 1 and Fig. 2 uses the preheating pipe 12 to perform indirect heat exchange on the water inside, and the heat efficiency is low. The economizer 10 with the preheating pipe 12 has cumbersome procedures such as pipeline configuration, welding, and fixing, and the manufacturing time is long and the cost is high. Scale is easy to form inside the preheating pipe 12, which can easily lead to pipe blockage and pipe wall rupture, and the exhaust gas burned may also contain corrosive substances, which will also cause corrosion and damage to the pipe wall of the preheating pipe 10. After the rupture, it is necessary to shut down and enter the factory for maintenance and replacement, but the replacement of the preheating pipe 12 is extremely difficult, and it will take a certain time to repair, and the loss of commercial benefits will be immeasurable. The volume of the media saver 10 is too large to take up space, which cannot effectively improve the utilization of space. On the other hand, pipeline welding technology has strict requirements, and it must be carried out by technicians of a certain level, which virtually increases the difficulty and cost of production.

Based on the problems of the above-mentioned economizer, the present invention proposes a novel structure of a water-drenched economizer.

A water shower economizer structure, comprising a preheating cylinder connected to a heating cylinder of a boiler; a water tank is arranged under the preheating cylinder, and the water tank communicates with the inner chamber of the preheating cylinder; one section The water supply pipe valve and pump assembly of the coal burner pressurize and connect a part of the water in the water tank to at least one spray pipe provided in the inner chamber. In the inner chamber; the hot air flow through the heating cylinder flows to the inner chamber of the preheating cylinder, and the sprayed water is heated and then poured into the water tank, so that the water in the water tank becomes preheated water ; a boiler feed pipe valve and pump Assembly, the preheated water in the water tank is pressurized and sent to the water collection chamber of the boiler for the boiler to produce steam.

The economizer of the present invention eliminates the preheating tubes of the prior art, thus avoiding the problems described in the prior art. In the present invention, the spray pipe is used to spray the water for exposure, and the sprayed water is directly heated by the hot air flow, and then dripped into the water tank, so that the thermal efficiency is high and the water preheats quickly.

[Prior Art]

10: Economizer

11: Preheating room

12: Preheating tube

13: Connecting pipe

14: Delivery pipe

15: Overheating mechanism

20: Boiler

21: Heating chamber

22:Collecting chamber

23: heating tube

24: Steam collection chamber

25: Steam output pipeline

29: Fluid power mechanism

[this invention]

30: Economizer

31: preheat cylinder

32: Internal chamber

33: Exhaust port

34: Nozzle

341: Spout

35: water retaining unit

352: board body

353: upper conical plate body

42: Sewage pipe valve

43: Source water inlet pipe valve

44: Water level control device

45: Boiler feed water pipe valve and pump assembly

50: connecting pipe

60: Boiler

61: heating cylinder

62: Vapor collection chamber

63: Heating chamber

354: Lower conical plate body

40: Sink

41: Economizer water supply pipe valve and pump assembly

64: heating tube

65: water collection chamber

66: Fluid power mechanism

67: Steam output pipeline

〔Fig. 1〕 is one of structural representation of conventional economizer and boiler.

[Fig. 2] is the second structural representation of conventional economizer and boiler.

[Fig. 3] is a schematic diagram of the appearance of the economizer and the boiler of the present invention.

[Fig. 4] is a schematic diagram of the appearance of the economizer of the present invention.

[Fig. 5] is a schematic diagram of the appearance plane and internal configuration of the economizer of the present invention.

[Fig. 6] is a schematic cross-sectional structure diagram of the economizer and the boiler of the present invention.

[Fig. 7] is a schematic diagram of another embodiment of the economizer of the present invention.

In order to illustrate the central idea of the present invention expressed in the column of the above-mentioned summary of the invention, it is expressed in specific embodiments. Various objects in the embodiments are drawn according to proportions, sizes, deformations or displacements suitable for illustration, rather than drawn according to the proportions of actual components, which are described first. And in the following description, the same and symmetrically arranged elements are denoted by the same reference numerals.

As shown in Figures 3 to 6, the present invention includes a coal economizer 30 and a boiler 60, the coal economizer 30 includes a preheating cylinder 31, the boiler 60 includes a heating cylinder 61, a connecting pipe 50 is connected to the preheating cylinder body 31 and the lower part of the heating cylinder 61, so that the preheating cylinder 31 and the heating cylinder 61 communicate. The top of the preheating cylinder 31 is an exhaust port 33 , and the exhaust port 33 communicates with an inner chamber 32 of the preheating cylinder 31 . A water tank 40 is connected under the preheating cylinder 31 , and the inside of the water tank 40 communicates with the inner chamber 32 of the preheating cylinder 31 . Through an economizer water supply pipe valve and a pump assembly 41, the water in the water tank 40 is pressurized and connected to at least one nozzle 34 inside the preheating cylinder 31, and the nozzle 34 is provided with several water nozzles 341 . Spray water into the internal chamber 32 .

The water tank 40 further includes: a sewage pipe valve 42 for discharging water from the water tank 40, a source water introduction pipe valve 43 for introducing external source water into the water tank 40, controlling the water level of the water tank 40 and the source water introduction pipe A water level control device 44 (including but not limited to a float ball) for opening and closing the valve 43 , and a boiler feed pipe valve and pump assembly 45 for outputting water from the tank 40 to the boiler 60 .

As shown in Figures 6 and 7, a water retaining unit 35 is also provided in the inner chamber 32 of the preheating cylinder 31, and the water retaining unit 35 is located above the nozzle 34 and close to the row of the preheating cylinder 31. Air port 33. The water blocking unit 35 is composed of a plate body 352 full of holes, and the shape of the plate body 352 includes but not limited to a flat plate shape, an upper arc plate shape, a lower arc plate shape, an upper cone plate shape, and a lower cone plate shape. Regardless of the shape of the plates 352 , they can be arranged singly or in multiples in the inner chamber 32 of the preheating cylinder 31 . The axis of the plate body 352 can be kept parallel to the axis of the preheating cylinder 31 , or can be inclined relative to the axis of the preheating cylinder 31 . The manner of arranging the boards 352 multiple times may be that several boards 352 are stacked at intervals or connected obliquely. In the present invention, Fig. 5 has described the arrangement of multiple plate body 352, and this plate body 352 is an upper conical plate body 353 and lower conical plate body 354, and this upper conical plate body 353 and this lower conical plate body The tapered ends of 354 are spaced apart from each other. FIG. 6 depicts another arrangement of multiple boards 352, the boards 352 are flat plates, and the boards 352 are connected to each other obliquely.

As shown in Fig. 6 and Fig. 7, the inner chamber 32 of the heating cylinder 61 is respectively provided with a vaporizer from top to bottom. Gas collection chamber 62 , a heating chamber 63 , and a water collection chamber 65 . Several heating pipes 64 are arranged in the heating chamber 63 . Both ends of the heating pipes 64 communicate with the water collection chamber 65 and the steam collection chamber 62 . An external hot air flow is introduced into the heating chamber 63 via a fluid dynamic mechanism 66 . The boiler feed pipe valve and pump assembly 45 are connected to the water collecting chamber 65 , so that the water collecting chamber 65 and the heating pipe 64 have water from the economizer 30 . The connecting pipe 50 connects the heating chamber 63 of the boiler 60 and the inner chamber 32 of the economizer 30 .

The mode of operation of the present invention is: the external hot air flow is introduced into the heating chamber 63 of the boiler 60 through the fluid power mechanism 66, so that the water in the heating pipe 64 is heated by heat exchange to generate steam and collect it in the steam collection chamber 62, Then it is sent to a target (not shown) that needs to use steam heat energy through the steam output pipeline 67 . After passing through the heating chamber 63 , the hot air flows into the inner chamber 32 of the preheating cylinder 31 through the connecting pipe 50 . The water in the water tank 40 is delivered to the spray pipe 34 through the economizer water supply pipe valve and the pump assembly 41 , and is sprayed into the inner chamber 32 of the preheating cylinder 31 through the water spray port 341 . The sprayed water is directly heated by the hot air flow and then falls into the water tank 40 like a waterfall curtain, so that the water temperature in the water tank 40 rises to become preheated water, and the preheated water passes through the boiler feed pipe valve and pump. The pump assembly 45 is transported to the water collecting chamber 65 and is filled with the heating pipe 64, so that the water in the water collecting chamber 65 and the heating pipe 64 is preheated water, thereby reducing the heating time and heating time required for the boiler 60 to produce steam. The heat energy consumed can achieve the purpose of energy saving and carbon reduction. In addition, the hot air in the inner chamber 32 of the preheating cylinder 31 moves to the upper exhaust port 33 to be discharged, and part of the hot air passes through the water blocking unit 35 and is blown in the water blocking unit 35 due to the temperature difference. The surface of the water is liquefied and condensed into water droplets, and when the water droplets fall down, they are heated by the hot air flow to become preheated water and drop into the water tank 40 . The temperature of the hot air passing through the water blocking unit 35 is reduced due to heat exchange, and the white mist can be reduced when it is released from the exhaust port 33 .

When the water in the water tank 40 is turbid and dirty and must be discharged and replaced, the sewage can be discharged outwards by the sewage pipe valve 42 of the water tank 40, and new clean water can be added into the water tank 40 from the source water inlet pipe valve 43 middle. The water level of the water tank 40 is controlled by the water level control device 44. When the water level of the water tank 40 drops to a predetermined height, the water level control device 44 triggers and activates the source water inlet pipe valve 43 to replenish the external source water into the water tank 40 in.

30: Economizer

31: preheat cylinder

32: Internal chamber

33: Exhaust port

34: Nozzle

341: Spout

35: water retaining unit

352: board body

40: Sink

41: Economizer water supply pipe valve and pump assembly

42: Sewage pipe valve

43: Source water inlet pipe valve

44: Water level control device

50: connecting pipe

Claims (2)

A water shower economizer structure, the water shower economizer structure is connected to a boiler; the boiler includes a heating cylinder, and the interior of the heating cylinder is respectively provided with a steam collection chamber and a heating chamber from top to bottom , and a water collecting chamber; several heating pipes are arranged in the heating chamber, and the two ends of the heating pipes communicate with the water collecting chamber and the steam collection chamber; a hot air flow is introduced into the heating chamber through a fluid power mechanism; It is characterized in that: a preheating cylinder includes an internal chamber, and an exhaust port communicated with the internal chamber is provided at the top of the preheating cylinder; the internal chamber communicates with the heating chamber of the boiler through a connecting pipe , the hot air flow through the heating chamber flows into the inner chamber through the connecting pipe; a water tank is arranged under the preheating cylinder, and the inside of the water tank communicates with the inner chamber; a coal economizer water supply pipe A valve and pump assembly that pressurizes and connects a part of the water in the water tank to at least one nozzle installed in the inner chamber, and the nozzle is provided with several water nozzles to spray water into the inner chamber In the chamber, heated by the hot air flow, it becomes preheated water and then pours into the water tank, making the water in the water tank become preheated water; a boiler feed pipe valve and pump assembly, the water in the water tank The preheated water is pressurized and sent to the water collecting chamber of the boiler, so that the water collecting chamber and the heating pipe are filled with the preheated water for the boiler to produce steam; a water blocking unit is arranged in the inner chamber, located Above the nozzle and close to the exhaust port; the water blocking unit includes an upper conical plate body and a lower conical plate body full of holes, and the tapered ends of the upper conical plate body and the lower conical plate body Relatively stacked at a distance from each other; when the hot air flow in the inner chamber passes through the water blocking unit, it liquefies and condenses on the surface to form water droplets, and the water drops fall down and are heated by the hot air flow to become preheated water and drop into the water tank . The structure of the water shower economizer as described in claim 1, wherein, the water tank further includes the discharge of the A waste pipe valve for water in the tank, a source water inlet valve for introducing external source water into the tank, and a water level control device for detecting the water level of the tank and then controlling the opening and closing of the source water inlet valve.

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