阅读说明：本技术 一种过热器外置的冷凝式蒸汽锅炉 (External condensing steam boiler of over heater ) 是由 朱建堂 杨梦达 于 2021-06-18 设计创作，主要内容包括：本发明涉及蒸汽锅炉技术领域,尤其是一种过热器外置的冷凝式蒸汽锅炉。其包括锅炉主机,所述锅炉主机顶部设置烟气出口,烟气出口上可拆卸的连接过热器；所述过热器包括箱体,箱体内腔中部竖直设置烟气隔板,烟气隔板左右两侧分别固定连接在箱体两侧壁上,烟气隔板下端固定连接在箱体底板上,烟气隔板上端和箱体顶板之间留有过烟通道。本发明通过在锅炉主机上部设置外置式过热器,将锅炉主机蒸汽出口管的蒸汽通过二回程管束的来烟在过热器箱体内进行再次加热,从而得到过热蒸汽,以防止蒸汽输送过程中的冷凝。(The invention relates to the technical field of steam boilers, in particular to a condensing steam boiler with an external superheater. The boiler comprises a boiler main machine, wherein a flue gas outlet is formed in the top of the boiler main machine, and the flue gas outlet is detachably connected with a superheater; the superheater comprises a box body, a flue gas partition plate is vertically arranged in the middle of an inner cavity of the box body, the left side and the right side of the flue gas partition plate are respectively and fixedly connected to two side walls of the box body, the lower end of the flue gas partition plate is fixedly connected to a bottom plate of the box body, and a flue gas channel is reserved between the upper end of the flue gas partition plate and a top plate of the box body. The external superheater is arranged on the upper part of the main boiler, and the steam in the steam outlet pipe of the main boiler is reheated in the superheater box body through the smoke coming from the two return pipe bundles, so that superheated steam is obtained, and condensation in the steam conveying process is prevented.)

1. A condensing steam boiler with an external superheater comprises a main boiler body (100) and is characterized in that: the top of the boiler main machine (100) is provided with a flue gas outlet (101), and the flue gas outlet (101) is detachably connected with a superheater (200); the superheater (200) comprises a box body (201), a flue gas partition plate (202) is vertically arranged in the middle of an inner cavity of the box body (201), the left side and the right side of the flue gas partition plate (202) are respectively and fixedly connected to two side walls of the box body (201), the lower end of the flue gas partition plate (202) is fixedly connected to a bottom plate of the box body (201), and a flue gas passing channel is reserved between the upper end of the flue gas partition plate (202) and a top plate of the box body (201); a box body smoke inlet (207) is formed in a bottom plate of the box body (201), the box body smoke inlet (207) is communicated with the smoke outlet (101), a box body smoke outlet (208) is formed in the end face of one side of the box body (201), the box body smoke outlet (208) is connected with a smoke inlet of the energy saver (300), the smoke outlet of the energy saver (300) is connected with a smoke inlet of the condenser (400), and the box body smoke inlet (207) and the box body smoke outlet (208) are respectively located in front and rear cavities of the smoke baffle (202); horizontal spiral finned tube (203) is transversely arranged in an inner cavity of the box body (201), the middle tube body of the horizontal spiral finned tube (203) is fixed on the flue gas partition plate (202), the tube bodies at two ends of the horizontal spiral finned tube (203) are fixed on the side wall of the box body (201), the steam inlet end of the horizontal spiral finned tube (203) is connected with one end of the inlet header (204), a steam outlet is arranged on the boiler main body (100), the steam outlet of the boiler main body (100) is connected with the other end of the inlet header (204) through a pipeline, the steam outlet end of the horizontal spiral finned tube (203) is connected with one end of the outlet header (205), one end of the inlet header (204) is connected with one end of the superheated steam outlet pipe (209), and the other end of the superheated steam outlet pipe (209) is connected with a steam conveying pipeline.

2. A condensing steam boiler with an external superheater according to claim 1, characterized in that: boiler host (100) is two return stroke structures of pot shell type, boiler host (100) inner chamber sets up ripple stove courage (102), boiler host (100) outside sets up combustor (103), combustor (103) one end is stretched out boiler host (100) and is connected with ripple stove courage (102) one end, ripple stove courage (102) other end and back combustion chamber (104) are connected, boiler host (100) inner chamber front and back end sets up front tube board (105) and back tube board (106) respectively, front tube board (105) and boiler host (100)'s preceding smoke box form preceding smoke chamber (107), set up two return stroke tube bundles (108) directly over ripple stove courage (102), two return stroke tube bundle (108) entrance point connect back combustion chamber (104), preceding smoke chamber (107) are connected to two return stroke tube bundle (108) exit ends, preceding smoke chamber (107) and exhanst gas outlet (101) intercommunication.

3. A condensing steam boiler with an external superheater according to claim 2, characterized in that: the boiler main machine (100) is provided with a boiler water inlet which is communicated with a water outlet of the energy saver (300).

4. A condensing steam boiler with an external superheater according to claim 1, characterized in that: and a superheater instrument header is arranged on the steam outlet pipe (209).

5. A condensing steam boiler with an external superheater according to any one of claims 1 to 4, characterized in that: the lower portion of the flue gas partition plate (202) is provided with a plurality of flue gas adjusting openings (210) side by side, the position of each flue gas adjusting opening (210) is correspondingly provided with a flue gas adjusting plate (211), the shape of each flue gas adjusting plate (211) is matched with the shape of each flue gas adjusting opening (210), the middle portions of the plurality of flue gas adjusting plates (211) arranged in the plurality of flue gas adjusting openings (210) are jointly fixed on a push-pull shaft (212), one end of the push-pull shaft (212) is rotatably connected onto a sliding sleeve (213), the sliding sleeve (213) is fixed onto the flue gas partition plate (202), the other end of the push-pull shaft (212) extends into an adjusting cylinder (215), the adjusting cylinder (215) is fixed in the side wall of the box body (201), one end, back to the push-pull shaft (212), of the adjusting cylinder (215) is provided with an opening, and the opening is detachably connected with a sealing plate (216).

6. A condensing steam boiler with an external superheater according to claim 5, characterized in that: the smoke adjusting opening (210) is of a rectangular structure.

7. A condensing steam boiler with an external superheater according to claim 5, characterized in that: the push-pull shaft (212) is positioned at one end of the adjusting cylinder, an adjusting handle (214) is welded, and the adjusting handle (214) and the push-pull shaft (212) are vertically arranged.

Technical Field

The invention relates to the technical field of steam boilers, in particular to a condensing steam boiler with an external superheater.

Background

The oil-gas boiler can be divided into a shell boiler and a water-tube boiler from the structure. Among them, although the water tube boiler has the characteristics of large capacity and high pressure parameter, it is difficult to manufacture, consumes many working hours and occupies a large area. The boiler shell boiler has compact structure, low requirement on water quality and good adaptability to load change; the corrugated furnace liner type structure is easy to seal, and a micro-positive pressure combustion mode is adopted, so that higher heat efficiency can be achieved. Therefore, shell-and-pan boilers are very widely used in industrial production. However, when the steam conveying distance is long, saturated steam is easy to condense in the pipeline, the temperature and pressure of the steam are reduced seriously, on one hand, the use of users is influenced, on the other hand, the service life of the pipeline is also influenced by the condensed water in the pipeline, and most of the existing shell-and-pan boilers are saturated steam boilers.

Therefore, it is highly desirable to design a superheated steam boiler that prevents condensation during steam delivery by generating superheated steam.

Disclosure of Invention

The applicant aims at the defects in the prior art and provides a condensing steam boiler with an external superheater, which can use boiler flue gas to reheat steam sent out from a steam boiler, so as to prevent the occurrence of condensation in the steam conveying process.

The technical scheme adopted by the invention is as follows:

a condensing steam boiler with an external superheater comprises a boiler main machine, wherein a flue gas outlet is formed in the top of the boiler main machine, and the flue gas outlet is detachably connected with the superheater; the superheater comprises a box body, wherein a flue gas partition plate is vertically arranged in the middle of an inner cavity of the box body, the left side and the right side of the flue gas partition plate are respectively and fixedly connected to two side walls of the box body, the lower end of the flue gas partition plate is fixedly connected to a bottom plate of the box body, and a flue gas passing channel is reserved between the upper end of the flue gas partition plate and a top plate of the box body; the box body bottom plate is provided with a box body smoke inlet which is communicated with the smoke outlet, the end surface of one side of the box body is provided with a box body smoke outlet, the box body smoke outlet is connected with the smoke inlet of the energy saver, the smoke outlet of the energy saver is connected with the smoke inlet of the condenser, and the box body smoke inlet and the box body smoke outlet are respectively positioned in the front cavity and the rear cavity of the smoke baffle plate; the horizontal spiral finned tube is transversely arranged in the inner cavity of the box body, the middle tube body of the horizontal spiral finned tube is fixed on the flue gas partition plate, the tube bodies at two ends of the horizontal spiral finned tube are fixed on the side wall of the box body, the steam inlet end of the horizontal spiral finned tube is connected with one end of the inlet header, the steam outlet of the boiler main machine is arranged on the boiler main machine, the steam outlet of the boiler main machine is connected with the other end of the inlet header through a pipeline, the steam outlet end of the horizontal spiral finned tube is connected with one end of the outlet header, the other end of the inlet header is connected with one end of the superheated steam outlet pipe, and the other end of the superheated steam outlet pipe is connected with the steam conveying pipeline.

Further, the boiler host is two return stroke structures of pot shell type, boiler host inner chamber sets up the ripple stove courage, the boiler host outside sets up the combustor, combustor one end is stretched out the boiler host and is connected with ripple stove courage one end, the ripple stove courage other end is connected with the chamber of backflowing, boiler host inner chamber front and back end sets up preceding tube sheet and back tube sheet respectively, preceding smoke box of preceding tube sheet and boiler host forms preceding smoke chamber, set up two return stroke tube bundles directly over the ripple stove courage, two return stroke tube bundles entrance points connect the chamber of backflowing, preceding smoke chamber is connected to two return stroke tube bundles exit ends, preceding smoke chamber and exhanst gas outlet intercommunication.

Furthermore, a boiler water inlet is arranged on the boiler main machine and communicated with a water outlet of the energy saver.

Further, a superheater instrument header is arranged on the steam outlet pipe.

Further, a plurality of flue gas regulation openings are arranged in parallel on the lower portion of the flue gas partition plate, a flue gas regulation plate is correspondingly arranged at the position of each flue gas regulation opening, the shape of each flue gas regulation plate is identical to that of each flue gas regulation opening, the middle portions of a plurality of flue gas regulation plates arranged in the flue gas regulation openings are jointly fixed on the push-pull shaft, one end of the push-pull shaft is rotatably connected onto the sliding sleeve, the sliding sleeve is fixed on the flue gas partition plate, the other end of the push-pull shaft extends into the regulation cylinder, the regulation cylinder is fixed in the side wall of the box body, an opening is formed in one end, back to the push-pull shaft, of the regulation cylinder, and the sealing plate is detachably connected onto the opening.

Further, the flue gas adjusting opening is of a rectangular structure.

Furthermore, the push-pull shaft is positioned at one end of the adjusting cylinder and is welded with an adjusting handle, and the adjusting handle and the push-pull shaft are vertically arranged.

The invention has the following beneficial effects:

the external superheater is arranged at the upper part of the main boiler, and the steam in the steam outlet pipe of the main boiler is reheated in the superheater box body through the smoke coming from the two return pipe bundles, so that superheated steam is obtained, and the condensation in the steam conveying process is prevented; according to the invention, the flue gas adjusting plate is arranged in the superheater, when the flue gas adjusting plate moves horizontally, part of smoke coming from the two-return tube bundle in the boiler main machine directly enters the energy saver along the flue gas adjusting opening between the flue gas adjusting plate and the flue gas partition plate, and does not participate in the heat exchange process of steam in the spiral fin tube in the superheater, namely the actual smoke quantity entering the superheater for heat exchange with the steam is controlled through the horizontal movement of the flue gas adjusting plate, and the temperature of superheated steam at the outlet of the superheater is further adjusted; the adjustment of the smoke volume is realized through different moving distances of the smoke adjusting plate, so that the adjustment of different superheated steam temperatures at the outlet of the superheater is realized; in the invention, the superheater, the economizer and the condenser are all arranged on one side of the top of the boiler, so that the superheater, the economizer and the condenser can be conveniently maintained and replaced, the floor area of the boiler is saved, and the space utilization rate of a boiler room is improved; compared with a built-in heater, the external superheater is not limited by the space of the front smoke box, and more heating surfaces can be arranged in the height direction so as to provide higher superheating temperature for users.

Drawings

FIG. 1 is a front view of the present invention.

Fig. 2 is a side view of the present invention.

FIG. 3 is a view showing the structure of the flue gas separator of the present invention.

Fig. 4 is a structural diagram of a flue gas adjusting mechanism of the invention.

Wherein: 100. a boiler main machine; 101. a flue gas outlet; 102. a corrugated furnace pipe; 103. a burner; 104. a flashback chamber; 105. a front tube sheet; 106. a rear tube plate; 107. a front smoke chamber; 108. two return tube bundles; 109. (ii) a 200. A superheater; 201. a box body; 202. a flue gas baffle plate; 203. a horizontal helical finned tube; 204. an inlet header; 205. an outlet header; 206. a superheated steam outlet pipe; 207. a smoke inlet of the box body; 208. a smoke outlet of the box body; 209. a superheated steam outlet pipe; 210. a flue gas regulating port; 211. a smoke adjusting plate; 212. a push-pull shaft; 213. a sliding sleeve; 214. adjusting the handle; 215. an adjusting cylinder; 216. closing the plate; 300. an energy saver; 400. a condenser.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

In the embodiment shown in fig. 1 and fig. 2, the main boiler 100 mainly includes a main boiler 100, the main boiler 100 is a shell-type two-pass structure, a flue gas outlet 101 is arranged at the top of the main boiler 100, and the flue gas outlet 101 is detachably connected with a superheater 200.

In the embodiment shown in fig. 1 and 2, the superheater 200 includes a box 201, a flue gas baffle 202 is vertically disposed in the middle of an inner cavity of the box 201, the left and right sides of the flue gas baffle 202 are respectively and fixedly connected to two side walls of the box 201, the lower end of the flue gas baffle 202 is fixedly connected to a bottom plate of the box 201, and a flue gas passage is reserved between the upper end of the flue gas baffle 202 and a top plate of the box 201.

In the embodiment shown in fig. 1 and 2, the bottom plate of the box 201 is provided with a box smoke inlet 207, and the box smoke inlet 207 is communicated with the smoke outlet 101. A box smoke outlet 208 is arranged on one side end face of the box 201, the box smoke outlet 208 is connected with a smoke inlet of the energy saver 300, and the smoke outlet of the energy saver 300 is connected with a smoke inlet of the condenser 400. The box smoke inlet 207 and the box smoke outlet 208 are respectively positioned in the front and back cavities of the smoke baffle 202.

In the embodiment shown in fig. 1 and 2, a horizontal spiral finned tube 203 is transversely arranged in an inner cavity of a box body 201, a middle tube body of the horizontal spiral finned tube 203 is fixed on a flue gas baffle 202, tube bodies at two ends of the horizontal spiral finned tube 203 are fixed on the side wall of the box body 201, a steam inlet end of the horizontal spiral finned tube 203 is connected with one end of an inlet header 204, a steam outlet is arranged on a boiler main body 100, and the steam outlet of the boiler main body 100 is connected with the other end of the inlet header 204 through a pipeline. The steam outlet end of the horizontal spiral finned tube 203 is connected with one end of an outlet header 205, the other end of the inlet header 204 is connected with one end of a superheated steam outlet pipe 209, the other end of the superheated steam outlet pipe 209 is connected with a steam conveying pipeline, and superheated steam is conveyed to a user through the steam conveying pipeline.

In the embodiment shown in fig. 1, a superheater instrument header is arranged on the steam outlet pipe 209, and parameters of steam in the steam outlet pipe 209 are monitored in real time through the superheater instrument header.

In order to realize the adjustment of the amount of flue gas passing through the superheater 200, in the embodiment shown in fig. 3, a plurality of flue gas adjusting openings 210 with a rectangular structure are arranged side by side at the lower part of the flue gas partition plate 202, a flue gas adjusting plate 211 is correspondingly arranged at the position of each flue gas adjusting opening 210, the shape of each flue gas adjusting plate 211 is matched with the shape of each flue gas adjusting opening 210, and the middle parts of the plurality of flue gas adjusting plates 211 arranged in the plurality of flue gas adjusting openings 210 are jointly fixed on a push-pull shaft 212. One end of the push-pull shaft 212 is rotatably connected to the sliding sleeve 213, the sliding sleeve 213 is fixed on the flue gas partition plate 202, the other end of the push-pull shaft 212 extends into the adjusting cylinder 215, the adjusting cylinder 215 is fixed in the side wall of the box body 201, an opening is formed in one end, back to the push-pull shaft 212, of the adjusting cylinder 215, and the sealing plate 216 is detachably connected to the opening. To facilitate adjustment of the push-pull shaft 212, an adjustment handle 214 is welded to the end of the adjustment cylinder 212, and the adjustment handle 214 is perpendicular to the push-pull shaft 212.

When the flue gas amount is adjusted, the sealing plate is opened, then the push-pull shaft 212 is horizontally pushed through the adjusting handle 214, and the push-pull shaft 212 drives the plurality of flue gas adjusting openings 210 to deviate from the positions of the flue gas adjusting openings 210, so that the flue gas at the position of the flue gas inlet 207 of the box body can directly reach the position of the flue gas outlet 208 of the box body through the plurality of flue gas adjusting openings 210 without participating in the heat exchange process of steam in the horizontal spiral finned tube 203 in the superheater 200.

In the embodiment shown in fig. 1, a corrugated furnace pipe 102 is arranged in the inner cavity of a boiler main body 100, a burner 103 is arranged outside the boiler main body 100, one end of the burner 103 extends out of the boiler main body 100 and is connected with one end of the corrugated furnace pipe 102, the other end of the corrugated furnace pipe 102 is connected with a back-fire chamber 104, a front pipe plate 105 and a back pipe plate 106 are respectively arranged at the front end and the back end of the inner cavity of the boiler main body 100, the front pipe plate 105 and a front smoke box of the boiler main body 100 form a front smoke chamber 107, and two back-fire pipe bundles 108 are arranged right above the corrugated furnace pipe 102. The inlet ends of the two return tube bundles 108 are connected with the combustion chamber 104, the outlet ends of the two return tube bundles 108 are connected with the front smoke chamber 107, and the front smoke chamber 107 is communicated with the smoke outlet 101.

In the embodiment shown in fig. 1, the boiler main body 100 is provided with a boiler water inlet, the boiler water inlet is communicated with a water outlet of the economizer 300, the economizer 300 heats boiler water by using waste heat of superheated flue gas, and conveys the heated water to the boiler main body 100 for use, so that the waste heat of the flue gas is fully utilized, and the thermal efficiency is improved.

The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.