CN214501182U

CN214501182U - Novel heat exchanger of steam generation equipment

Info

Publication number: CN214501182U
Application number: CN202120341372.6U
Authority: CN
Inventors: 唐澧龙; 刘科; 胡剑
Original assignee: Jiangsu Tecwoo Thermal Equipment Co ltd
Current assignee: Jiangsu Tecwoo Thermal Equipment Co ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2021-10-26
Anticipated expiration: 2031-02-06

Abstract

The utility model relates to a steam generator's novel heat exchanger, it includes spiral coil heat exchanger, spiral coil heat exchanger is coiled into many circles of heat transfer coil along spiral direction spiral of spiral coil heat exchanger by a steel pipe and forms, spiral coil heat exchanger's one end is the import, spiral coil heat exchanger's the other end is the export, heat transfer coil's length direction and spiral coil heat exchanger's helical pitch direction mutually perpendicular. The utility model discloses a novel heat exchanger adopts spiral coil heat exchanger, and spiral coil heat exchanger's pipe gap can be controlled about 2mm, can be in the number of turns of the heat transfer coil pipe of increase as far as possible in finite space to increase heat transfer area, effectively reduce the flue gas temperature, control up flows the flue gas temperature who preheats heat exchanger (copper heat exchanger), and greatly reduced preheats the risk that heat exchanger warp the damage.

Description

Novel heat exchanger of steam generation equipment

Technical Field

The utility model relates to a steam generator's technical field, in particular to novel heat exchanger of steam generating equipment.

Background

The existing heat exchange device of the direct current steam generator adopts a direct current steam generation technology, a plurality of layers of heat exchangers are arranged in the heat exchange device of the direct current steam generator from top to bottom, a first layer of heat exchanger is a copper heat exchanger, a second layer of heat exchanger is a copper heat exchanger, a third layer of heat exchanger is a stainless steel coiled pipe heat exchanger, the coiled pipe heat exchanger is a plurality of straight pipes, and elbows are welded at the ends of the straight pipes, so that coiled pipes are formed. Tap water enters the multilayer heat exchanger, the tap water performs countercurrent heat exchange from top to bottom, smoke is discharged from the top from bottom to top, the heat exchange efficiency is high, and the steam formation speed is high.

Although the existing steam generator device has high heat exchange efficiency and high steam forming speed, the existing steam generator device also has the following defects:

the pipe clearance of current coiled pipe heat exchanger is big, leads to the quantity of the heat exchange tube of coiled pipe heat exchanger limited, and the heat transfer area of coiled pipe heat exchanger is little, can't more effectively reduce the flue gas temperature, leads to copper heat exchanger temperature high, and the temperature rise is fast, and copper heat exchanger's heat-resisting strength is not enough, consequently, copper heat exchanger is high temperature high pressure and the deformation damage condition easily appears under the abnormal conditions.

And in addition, the elbow of the coiled pipe heat exchanger is large in welding workload and low in efficiency, and water leakage risks exist.

And (III) the steam forming speed of the conventional direct current steam generator heat exchange device is high, but the steam quality cannot be effectively ensured. Therefore, the structure of the heat exchanger of the existing steam generating apparatus needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an effectively reduce flue gas temperature, improve heat exchange efficiency, greatly reduced copper heat exchanger warp the risk of damaging, prolong copper heat exchanger's life's steam generation equipment's novel heat exchanger.

The invention aims to realize the following steps:

the utility model provides a steam generation equipment's novel heat exchanger, includes spiral coil heat exchanger, spiral coil heat exchanger is coiled into many circles of heat transfer coil along spiral direction spiral of spiral coil heat exchanger by a steel pipe and forms, the one end of steel pipe is the import, the other end of steel pipe is the export, heat transfer coil's length direction and spiral coil heat exchanger's lead direction mutually perpendicular, the steel pipe is preferred to be nonrust steel pipe. Compare current heat exchanger, the utility model discloses a novel heat exchanger can be in the number of turns of the heat transfer coil pipe of increase as far as possible in limited space, thereby make the utility model discloses a heat transfer area is bigger, and heat exchange efficiency is higher, more can effectively reduce flue gas temperature, improves the risk that heat exchange efficiency, greatly reduced copper heat exchanger warp the damage, prolongs copper heat exchanger's life.

The utility model can be further improved as follows.

The spiral coil heat exchanger is integrally bent and formed. The utility model discloses a spiral coil pipe heat exchanger is the shaping of integrative curved system, and machining efficiency is high, and does not have the welding elbow, can effectively reduce the risk of leaking, improves production efficiency simultaneously.

Two adjacent circles exist between the heat exchange coil pipe and cross the cigarette gap, and the flue gas can rise from the cigarette gap of crossing of the spiral coil pipe heat exchanger of lower floor, and the spiral coil pipe heat exchanger of upper strata continues the heat transfer with high temperature flue gas at once to improve heat exchange efficiency.

Two adjacent circles the cigarette gap scope of crossing between the heat transfer coil is 1mm-10mm, and the preferred is 2mm, consequently the utility model discloses can increase heat transfer coil's number of turns as far as possible in finite space to increase heat transfer area, improve heat exchange efficiency.

Spiral coil heat exchanger is microscler form, heat exchange coil is the runway form, spiral coil heat exchanger's length direction is the same with heat exchange coil's length direction, thereby has increased the utility model discloses a heat transfer area.

The utility model has the advantages as follows:

(one) the utility model discloses a novel heat exchanger adopts spiral coil heat exchanger, and spiral coil heat exchanger's pipe gap can be controlled about 2mm, can increase heat transfer coil's number of turns in finite space as far as possible, thereby increases the utility model discloses a heat transfer area effectively reduces flue gas temperature, controls up-flowing and preheats the flue gas temperature of heat exchanger (copper heat exchanger), and greatly reduced preheats the risk that the heat exchanger warp the damage.

(two) in addition, the utility model discloses a novel heat exchanger is the shaping of integrative curved system, and machining efficiency is high, and does not have the welding elbow, can effectively reduce the risk of leaking, improves production efficiency simultaneously.

(III) more somely, the utility model discloses increase behind the current stabilizer, steam in the spiral coil heat exchanger gets into the current stabilizer after, realizes the steam-water separation, and the water droplet of high temperature is at the current stabilizer condensation, and steam then gets into next spiral coil heat exchanger in, later heats the vaporization once more to effectively hang down the dryness fraction of guaranteeing steam.

Drawings

Fig. 1 is a schematic structural view of the steam generating apparatus of the present invention (with the front side plate and the right side plate omitted).

Fig. 2 is a schematic structural view of another angle (the rear side plate and the right side plate are omitted) of the steam generating apparatus of the present invention.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a right side view of fig. 1.

Fig. 5 is a schematic structural view of the first layer spiral coil heat exchanger and the second layer spiral coil heat exchanger of the steam generating device of the present invention.

The arrows in fig. 3 and 4 indicate the flow direction of the cold water and the water vapor.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

In a first embodiment, as shown in fig. 1 to 5, a steam generating apparatus includes a casing 1, a water inlet pipe (not shown in the figure) and a current stabilizer 6, where the casing 1 is defined by a top plate 11, a front side plate, a rear side plate 15, a left side plate 12 and a right side plate arranged in an upper, front, rear, left and right direction, a preheating heat exchanger 20, a vaporizing heat exchanger 40 and a fire grate 8 are sequentially disposed in the casing 1 from top to bottom, the preheating heat exchanger 20 includes a first layer preheating heat exchanger 2 and a second layer preheating heat exchanger 3, the vaporizing heat exchanger 40 includes a first layer spiral coil heat exchanger 4 and a second layer spiral coil heat exchanger 5, the first layer preheating heat exchanger 2, the second layer preheating heat exchanger 3, the second layer spiral coil heat exchanger 5 and the first layer spiral coil heat exchanger 4 are sequentially communicated, and the first layer preheating heat exchanger 2, the second layer preheating heat exchanger 3, the first layer spiral coil heat exchanger 4, The first layer of spiral-type coil heat exchanger 4 and the second layer of spiral-type coil heat exchanger 5 are horizontally arranged in the shell. The top of casing 1 is equipped with fan 7, be equipped with on first layer spiral coil heat exchanger 4 steam outlet 10, first layer preheats and is equipped with water inlet 9 on the heat exchanger 2, first layer spiral coil heat exchanger 4 with second layer spiral coil heat exchanger 5 all is coiled into many circles heat exchange coil 41 by a steel pipe along spiral coil heat exchanger's helical pitch direction spiral and forms, heat exchange coil 41's length direction and spiral coil heat exchanger's helical pitch direction mutually perpendicular.

As a more specific technical solution of the present invention.

One end of the steel pipe of the first layer of spiral coil heat exchanger is an inlet, and the other end of the steel pipe of the first layer of spiral coil heat exchanger is an outlet. The same is true of the two ends of the steel tube of the second layer spiral coil heat exchanger.

The first layer of spiral coil heat exchanger 4 is integrally bent.

The second layer of spiral coil heat exchanger 5 is integrally bent.

And a smoke passing gap is formed between two adjacent circles of the heat exchange coil pipes on the same layer of spiral coil pipe heat exchanger.

The range of the smoke passing gap between two adjacent circles of heat exchange coil pipes 41 on the same layer of spiral coil pipe heat exchanger is 1mm-10mm, and the optimal range is 2 mm.

The first layer of preheating heat exchanger 2 and the second layer of preheating heat exchanger 3 are copper heat exchangers, and the first layer of spiral coil heat exchanger 4 and the second layer of spiral coil heat exchanger 5 are stainless steel heat exchangers.

First layer spiral coil heat exchanger 4 and second layer spiral coil heat exchanger 5 all are microscler form, heat exchange coil 41 is the runway form, the length direction of first layer spiral coil heat exchanger 4, second layer spiral coil heat exchanger 5 are the same with heat exchange coil 41's length direction, the lead direction of first layer spiral coil heat exchanger is mutually perpendicular with heat exchange coil 41's length direction.

The heat exchange coil 41 of the first layer of spiral coil heat exchanger 4 and the heat exchange coil 41 of the second layer of spiral coil heat exchanger 5 are arranged in a staggered mode, smoke can rise from a smoke passing gap, and therefore heat exchange efficiency is improved.

The current stabilizer 6 is positioned outside the casing 1, the outlet of the second layer of spiral coil heat exchanger 5 is communicated with the side wall of the current stabilizer 6, and the inlet of the first layer of spiral coil heat exchanger 4 is communicated with the top of the current stabilizer 6.

The inlet tube with the water inlet 9 is connected, the bottom and the inlet tube intercommunication of current regulator 6.

The utility model discloses a theory of operation is:

the utility model discloses during operation, cold water passes through the water inlet, the inlet tube enters into first layer preheating heat exchanger 2 in proper order, second layer preheating heat exchanger 3, first layer spiral coil heat exchanger 4 and second layer spiral coil heat exchanger 5, meanwhile, the fire row is igniteed, the fire row begins to toast first layer spiral coil heat exchanger 4, second layer spiral coil heat exchanger 5, first layer preheating heat exchanger 2 and second layer preheating heat exchanger 3, the flame of fire row mainly toasts first layer spiral coil heat exchanger 4 and second layer spiral coil heat exchanger 5, and the waste heat energy of the flame of fire row preheats the cold water that enters into first layer preheating heat exchanger 2 and second layer preheating heat exchanger 3 earlier, make cold water heat up fast, become high-temperature water, follow water and enter into second layer spiral coil heat exchanger 5 again, when water enters into second layer spiral coil heat exchanger 5, the boiling and vaporization are started to become water vapor, and then the water vapor with high temperature flows to the current stabilizer 6 to realize the water vapor separation. The little drop of high temperature condenses in the current stabilizer, and the comdenstion water after the condensation gets into again through the inlet tube the utility model discloses an in the heat exchanger was preheated to the first layer, the dry steam of high temperature then gets into first layer spiral coil pipe heat exchanger 4 and heats the vaporization once more to effectively hang down the dryness fraction of guaranteeing steam. Thereafter, the high-temperature steam is discharged from the steam outlet 10 to be supplied to the steam heating apparatus.

The utility model discloses a novel heat exchanger 40 adopts spiral coil heat exchanger, and spiral coil heat exchanger's pipe gap can be controlled about 2mm, can be in the number of turns of the heat transfer coil 41 of increase as far as possible in finite space to increase heat transfer area, effectively reduce flue gas temperature, control up-flow preheats the flue gas temperature of heat exchanger 20 (copper heat exchanger), greatly reduced preheats the risk that heat exchanger 20 warp the damage.

Claims

1. The utility model provides a steam generation equipment's novel heat exchanger, includes spiral coil heat exchanger, spiral coil heat exchanger is coiled into many circles of heat transfer coil along spiral direction spiral of spiral coil heat exchanger by a steel pipe and forms, the one end of steel pipe is the import, the other end of steel pipe is for exporting, heat transfer coil's length direction and spiral coil heat exchanger's lead direction mutually perpendicular.

2. The heat exchanger of a steam generating plant as set forth in claim 1, wherein said spiral coil heat exchanger is integrally formed by bending.

3. The new heat exchanger for a steam generating plant as claimed in claim 1, wherein said spiral coil heat exchanger is elongated.

4. The novel heat exchanger of a steam generating plant as claimed in claim 1, characterized in that a smoke passing gap is present between two adjacent turns of said heat exchanging coil.

5. The new heat exchanger of steam generating equipment as claimed in claim 4, wherein the range of the smoke passing gap between two adjacent circles of said heat exchanging coil pipes is 1mm-10 mm.

6. The new heat exchanger of steam generating equipment as claimed in claim 3, wherein said heat exchanging coil is in a race track shape, and the length direction of said spiral coil heat exchanger is the same as the length direction of said heat exchanging coil.