Superheated steam generator device

Abstract

The utility model relates to a superheated steam generator device which comprises an outer shell and a combustor, the combustor is arranged on the outer shell, and a steam collecting box, a flame tube, a water collecting box, an outer spiral heat exchange tube, an inner spiral heat exchange tube, a heat exchange tube bundle, a preheating heat exchanger and an overheating heat exchanger are arranged in the outer shell. The upper end and the lower end of the heat exchange tube bundle are communicated with the steam collection tank and the water collection tank respectively, the upper end of the flame tube is communicated with the combustor, the heat exchange tube bundle, the preheating heat exchanger and the overheating heat exchanger are sequentially arranged in the shell, and the preheating heat exchanger, the inner spiral heat exchange tube, the outer spiral heat exchange tube, the steam collection tank, the steam-water separation device, the overheating heat exchanger and the steam outlet are sequentially communicated in series. The superheated steam generated by the superheated steam generator device still has high steam quality after long-distance conveying, and the problems that after long-distance conveying of saturated steam, heat is lost, energy is reduced, and part of steam is condensed into liquid drops, so that the steam quality becomes poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam generating devices, in particular to a superheated steam generator device. Background Art

[0002] At present, the existing direct current steam generating device cannot solve the problems of poor quality of steam output, temperature and pressure reduction after long-distance steam transportation, which leads to condensation of part of the steam into water, poor steam quality, reduced heat exchange efficiency, low steam latent heat, and unclear energy saving effect. Therefore, the structure of the existing direct current steam generating device needs to be further improved. Utility Model Content

[0003] The utility model aims to provide a superheated steam generator device with good steam quality.

[0004] The purpose of the utility model is achieved in this way:

[0005] A superheated steam generator device comprises an outer shell and a burner. The outer shell is arranged horizontally, and the burner is arranged on the top of the outer shell. A steam collecting box, a flame tube, a water collecting box, an outer spiral heat exchange tube, an inner spiral heat exchange tube, a heat exchange tube bundle, a preheating heat exchanger, and a superheating heat exchanger are arranged in the outer shell. The steam collecting box is located above the water collecting box. The upper end and the lower end of the heat exchange tube bundle are respectively connected with the steam collecting box and the water collecting box. A smoke exhaust port is provided at one end of the outer shell. The flame tube, the inner spiral heat exchange tube, the outer spiral heat exchange tube are arranged in the outer shell from the inside to the outside. The upper end of the flame tube is connected with the burner. The heat exchange tube bundle, the preheating heat exchanger, and the superheating heat exchanger are arranged in the outer shell in sequence. A steam-water separation device is provided in the steam collecting box. A steam outlet is provided at the other end of the superheating heat exchanger. A water inlet is provided at one end of the preheating heat exchanger. The preheating heat exchanger, the inner spiral heat exchange tube, the outer spiral heat exchange tube, the steam collecting box, the steam-water separation device, the superheating heat exchanger, and the steam outlet are connected in series in sequence. The superheated steam produced by the superheated steam generator device of the utility model still has a high steam quality after long-distance transportation, which solves the problem that the heat of saturated steam is lost and the energy is reduced after long-distance transportation, and part of the steam condenses into droplets, resulting in poor steam quality.

[0006] The present invention can also be further improved as follows.

[0007] The bottom end of the flame tube is closed, the top end of the flame tube passes through the water collecting tank upward and is connected to the burner. The side of the flame tube is provided with a fire outlet mesh hole, and the flame sprays out of the flame tube through the fire outlet mesh hole. The flame radiation heat at various parts of the flame tube is uniform, and the heating effect is good.

[0008] The utility model also comprises a water level gauge, the upper end and the lower end of which are respectively communicated with the steam collecting box and the water collecting box, and the water level gauge is used for monitoring the water level of the water collecting box.

[0009] The lower end of the inner spiral heat exchange tube is communicated with one end of the preheating heat exchanger, and the upper end of the inner spiral heat exchange tube is communicated with the lower end of the outer spiral heat exchange tube.

[0010] A communicating circulation pipe is arranged in the outer shell, and the upper end and the lower end of the communicating circulation pipe are respectively communicated with the steam collecting tank and the water collecting tank.

[0011] The outer wall of the upper end of the flame tube is wrapped with a first insulation layer, and the first insulation layer is located in the steam collecting box. The first insulation layer effectively protects the flame tube and prevents the flame tube from being burned by the high temperature flame.

[0012] A second insulation layer is provided on the top of the steam collecting box. The first insulation layer effectively protects the steam collecting box and prevents the steam collecting box from being burned by high temperature flames.

[0013] One end of the superheat exchanger provided with a steam outlet protrudes out of the shell.

[0014] The steam outlet end of the steam-water separation device is communicated with one end of the superheat heat exchanger.

[0015] The beneficial effects of the utility model are as follows:

[0016] (1) The superheated steam produced by the superheated steam generator device of the utility model still has a high steam quality after being transported over long distances. This solves the problem that the saturated steam loses heat and reduces energy after being transported over long distances, and part of the steam condenses into droplets, resulting in poor steam quality.

[0017] (2) The superheated steam produced has a higher temperature and higher heat, higher available steam latent heat, higher thermal efficiency, and significant energy-saving effect.

[0018] (3) When superheated steam is used for drying, the drying quality is better, the heat transfer coefficient and specific heat are larger. When used as a desiccant, the drying cycle is short and the color of the dried product will not fade.

[0019] (4) Compared with saturated steam, when superheated steam is used as a power heat source for driving equipment, it will not produce condensed water to damage the driving equipment.

[0020] (5) Superheated steam is safe. There is no oxygen in superheated steam drying, and there is no oxidation and combustion reaction. It can kill bacteria and other toxic microorganisms when drying food raw materials and pharmaceutical raw materials.

[0021] (6) Superheated steam can be used for mechanical oil degreasing, waste plastic recycling and sterilization before utilization, cleaning, drying and coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of a superheated steam generator device of the utility model.

[0023] Figure 2 yes Figure 1Sectional view at AA (burner, water level gauge and base omitted).

[0024] Figure 1 , Figure 2 The arrows in the diagram indicate the direction of flow of water, steam or flue gas. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Embodiment 1, as Figure 1 to Figure 2 As shown, a superheated steam generator device comprises a shell 1 and a burner 10. The shell is arranged horizontally, and the burner 10 is arranged on the top of the shell 1. The shell 1 is provided with a steam collecting box 4, a flame tube 9, a water collecting box 5, an outer spiral heat exchange tube 2, an inner spiral heat exchange tube 3, a heat exchange tube bundle 8, a preheating heat exchanger 6, and a superheating heat exchanger 7. The steam collecting box 4 is located above the water collecting box 5. The upper end and the lower end of the heat exchange tube bundle 8 are respectively connected to the steam collecting box 4 and the water collecting box 5. One end of the shell 1 is provided with a smoke exhaust port. The flame tube 9, the inner spiral heat exchange tube 3, the outer spiral heat exchange tube 2, the inner spiral heat exchange tube 3, the outer spiral heat exchange tube bundle 8, the preheating heat exchanger 6, and the superheating heat exchanger 7. The spiral heat exchange tube 2 is arranged in the outer shell 1 from the inside to the outside, the upper end of the flame tube 9 is connected with the burner 10, the heat exchange tube bundle 8, the preheating heat exchanger 6, and the superheating heat exchanger 7 are arranged in the outer shell 1 in sequence, the steam collecting box 4 is provided with a steam-water separation device 11, the other end of the superheating heat exchanger 7 is provided with a steam outlet 13, and one end of the preheating heat exchanger 6 is provided with a water inlet 14. The preheating heat exchanger 6, the inner spiral heat exchange tube 3, the outer spiral heat exchange tube 2, the steam collecting box 4, the steam-water separation device 11, the superheating heat exchanger 7, and the steam outlet 13 are connected in series in sequence.

[0027] As a more specific technical solution of the utility model.

[0028] The bottom end of the flame tube 9 is closed, the top end of the flame tube 9 passes through the water collecting tank 5 upwards and is connected with the burner 10, and the side of the flame tube 9 is provided with a fire outlet mesh hole.

[0029] The utility model further comprises a water level gauge 12, the upper end and the lower end of the water level gauge 12 are respectively communicated with the steam collecting box 4 and the water collecting box 5.

[0030] The lower end of the inner spiral heat exchange tube 3 is connected to one end of the preheating heat exchanger 6 , and the upper end of the inner spiral heat exchange tube 3 is connected to the lower end of the outer spiral heat exchange tube 2 .

[0031] A communicating circulation pipe 19 is provided in the shell 1 , and the upper end and the lower end of the communicating circulation pipe 19 are respectively communicated with the steam collecting tank 4 and the water collecting tank 5 .

[0032] The outer wall of the upper end of the flame tube 9 is wrapped with a first insulation layer 20 , and the first insulation layer 20 is located in the steam collecting box 4 .

[0033] A second heat insulating layer 21 is provided on the top of the steam collecting tank 4 .

[0034] One end of the superheat heat exchanger 7 , which is provided with a steam outlet 13 , extends out of the shell 1 .

[0035] The steam outlet end of the steam-water separation device 11 is communicated with one end of the superheat heat exchanger 7 .

[0036] A water inlet flow sensor 17 is provided at the water inlet.

[0037] The housing is provided with a condensed water discharge port 16 , through which the condensed water in the housing is discharged from the housing.

[0038] The water collecting tank is provided with a drain port 18 , through which the water in the water collecting tank is discharged from the water collecting tank.

[0039] The working principle of the utility model is:

[0040] After the utility model is started, the burner 10 begins to spray flames downward, the flame burns in the flame tube 9, and the flame sprays out of the flame tube 9 through the fire distribution mesh. The flame combustion produces high-temperature flue gas, and the flame radiates the inner spiral heat exchange tube 3. The high-temperature flue gas successively exchanges heat with the inner spiral heat exchange tube 3, the outer spiral heat exchange tube 2, the superheating heat exchanger 7, and the preheating heat exchanger 6. The high-temperature flue gas after heat exchange becomes low-temperature flue gas, and finally the low-temperature flue gas is discharged from the outer shell from the exhaust port.

[0041] External cold water enters the preheating heat exchanger 6 through the water inlet 14. After the cold water exchanges heat with the flue gas in the preheating heat exchanger 6, it enters the inner spiral heat exchange tube 3 and the outer spiral heat exchange tube 2 for heat exchange. After the inner and outer spiral heat exchange tubes 2 exchange heat with the high-temperature flue gas, the water is heated into steam and enters the steam collecting box 4. Due to the different densities of steam and water, after separation in the steam-water separator, the steam enters the superheating heat exchanger 7. The high-temperature water flows downward and flows into the water collecting box 5 through the heat exchange tube bundle 8 and the circulating connecting pipe. The water in the heat exchange tube bundle 8 exchanges heat with the high-temperature flue gas to generate steam again. The steam flows upward to the steam-water separator and then continues to flow into the superheating heat exchanger 7. The steam is heated into superheated steam with higher dryness in the superheating heat exchanger 7. Finally, the superheated steam is transported to the user terminal from the steam outlet.

[0042] The water level meter 12 is linked with the water inlet flow sensor and the drain outlet to prevent the water level from exceeding the maximum liquid level warning line and causing a large amount of water carried by steam.

Claims

1. A superheated steam generator device, comprising a shell and a burner, characterized in that: The shell is arranged horizontally, and the burner is arranged on the top of the shell. A steam collecting box, a flame tube, a water collecting box, an outer spiral heat exchange tube, an inner spiral heat exchange tube, a heat exchange tube bundle, a preheating heat exchanger, and a superheating heat exchanger are arranged in the shell. The steam collecting box is located above the water collecting box. The upper and lower ends of the heat exchange tube bundle are connected with the steam collecting box and the water collecting box respectively. A smoke exhaust port is provided at one end of the shell. The flame tube, the inner spiral heat exchange tube, the outer spiral heat exchange tube are arranged in the shell from the inside to the outside. The upper end of the flame tube is connected with the burner. The heat exchange tube bundle, the preheating heat exchanger, and the superheating heat exchanger are arranged in the shell in sequence. A steam-water separation device is provided in the steam collecting box. A steam outlet is provided at the other end of the superheating heat exchanger. A water inlet is provided at one end of the preheating heat exchanger. The preheating heat exchanger, the inner spiral heat exchange tube, the outer spiral heat exchange tube, the steam collecting box, the steam-water separation device, the superheating heat exchanger, and the steam outlet are connected in series in sequence.

2. The superheated steam generator device according to claim 1, characterized in that: The bottom end of the flame tube is closed, the top end of the flame tube passes through the water collecting tank upwards and is connected with the burner, and a fire outlet mesh hole is arranged on the side of the flame tube.

3. The superheated steam generator device according to claim 1, characterized in that: It also includes a water level gauge, the upper end and the lower end of the water level gauge are respectively connected with the steam collecting box and the water collecting box.

4. The superheated steam generator device according to claim 2, characterized in that: The lower end of the inner spiral heat exchange tube is communicated with one end of the preheating heat exchanger, and the upper end of the inner spiral heat exchange tube is communicated with the lower end of the outer spiral heat exchange tube.

5. The superheated steam generator device according to claim 3, characterized in that: A communicating circulation pipe is arranged in the outer shell, and the upper end and the lower end of the communicating circulation pipe are respectively communicated with the steam collecting tank and the water collecting tank.

6. The superheated steam generator device according to claim 2, characterized in that: The outer side wall of the upper end of the flame tube is wrapped with a first heat insulating layer, and the first heat insulating layer is located in the steam collecting box.

7. The superheated steam generator device according to claim 3, characterized in that: A second insulation layer is provided on the top of the steam collecting box.

8. The superheated steam generator device according to claim 2, characterized in that: One end of the superheat heat exchanger provided with a steam outlet protrudes out of the shell.

9. The superheated steam generator device according to claim 1, characterized in that: The steam outlet end of the steam-water separation device is communicated with one end of the superheat heat exchanger.

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