Steam heating device

Abstract

The utility model provides a steam heating device, which relates to the technical field of heat exchange and comprises a heat exchange box, a first double-helix steam pipe, a second double-helix steam pipe, an air inlet pipe fitting, an air outlet pipe fitting and a steam-liquid separator. The first double-spiral steam pipe and the second double-spiral steam pipe each comprise a spiral steam pipe a and a spiral steam pipe b, the air inlet ends of the spiral steam pipes a and the spiral steam pipes b are communicated with the air inlet pipe fitting, the air outlet ends of the spiral steam pipes a and the spiral steam pipes b are communicated with the air outlet pipe fitting, and the direction of steam in the spiral steam pipes a is from bottom to top. The direction of steam in the spiral steam pipe b is from top to bottom, the steam outlet pipe fitting is connected with the steam-liquid separator, and a spiral drainage groove is formed in the spiral steam pipe a. Water in the heat exchange box is subjected to heat exchange simultaneously from the upper end and the lower end, and the heat exchange uniformity of the water in the heat exchange box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a steam heating device. Background Art

[0002] Steam heaters are made of steel or stainless steel pipes. Steam flows inside the heating pipes, using steam as a heat source and transferring heat through the stainless steel pipes. They are widely used in industries such as food processing, pharmaceuticals, and chemicals. Existing steam heaters include a stainless steel coil, a steam inlet and outlet, and a tank body. The stainless steel coil is set inside the tank body. Steam enters the stainless steel coil through the inlet and is output through the outlet. During the flow of steam, heat is transferred to heat the liquid in the tank body. However, the flow direction of steam is unidirectional, and the temperature of steam gradually decreases during the flow and heat transfer process. The closer the steam is to the outlet of the stainless steel coil, the lower the steam temperature is. This causes uneven heating of the liquid in the tank body, affecting the heating effect of the liquid in the tank body. To solve the problem of uneven heating of the liquid in the tank body, this application proposes a steam heating device. Utility Model Content

[0003] The utility model provides a steam heating device, aiming to solve the above-mentioned problems.

[0004] The technical solution of the present utility model is achieved as follows:

[0005] A steam heating device comprises a heat exchange box, a first double-helix steam pipe, a second double-helix steam pipe, an air inlet pipe fitting, an air outlet pipe fitting and a vapor-liquid separator, wherein a plurality of supporting legs are connected to the bottom of the heat exchange box, the first double-helix steam pipe and the second double-helix steam pipe are respectively arranged in the heat exchange box, the first double-helix steam pipe and the second double-helix steam pipe each comprise a spiral steam pipe a and a spiral steam pipe b, the air inlet ends of the spiral steam pipe a and the spiral steam pipe b are respectively communicated with the air inlet pipe fitting, the air outlet ends of the spiral steam pipe a and the spiral steam pipe b are respectively communicated with the air outlet pipe fitting, the steam direction in the spiral steam pipe a is from bottom to top, the steam direction in the spiral steam pipe b is from top to bottom, the air outlet pipe fitting is connected to the vapor-liquid separator, a spiral drainage groove is provided in the spiral steam pipe a, and the spiral drainage groove is communicated with the water outlet end of the vapor-liquid separator.

[0006] Preferably, a spiral partition with an arc-shaped cross section is provided inside the spiral steam pipe a, and a plurality of drainage holes are provided on the spiral partition, and a plurality of the drainage holes are connected to the spiral drainage groove, and a plurality of the drainage holes are arranged at an angle.

[0007] Preferably, the air intake pipe includes an air intake main pipe, an air intake branch pipe a, an air intake branch pipe b and a tee pipe. The air intake main pipe is connected to one end of the tee pipe, and the other two ends of the tee pipe are respectively connected to the air intake branch pipe a and the air intake branch pipe b. The air intake branch pipe a is connected to the air intake end of the spiral steam pipe a, and the air intake branch pipe b is connected to the air intake end of the spiral steam pipe b.

[0008] Preferably, the outlet pipe includes an outlet pipe a and an outlet pipe b, the outlet pipe a is connected to the outlet end of the spiral steam pipe b, the outlet pipe b is connected to the outlet end of the spiral steam pipe a, the outlet pipe b is connected to the outlet pipe a, and the end of the outlet pipe a is connected to the gas-liquid separator.

[0009] Preferably, the gas outlet end of the gas-liquid separator is connected to the exhaust pipe, and the water outlet end of the gas-liquid separator is connected to the drain pipe.

[0010] Preferably, the bottom of the spiral steam pipe is connected to a guide pipe, and the output end of the guide pipe is connected to a drain pipe.

[0011] Preferably, the outer walls of the spiral steam pipe a and the spiral steam pipe b are respectively connected with a plurality of heat conducting plates.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model provides a steam heating device, which can transport steam to a first double-helix steam pipe and a second double-helix steam pipe through an air intake pipe, and the steam is transported in the spiral steam pipe a of the first double-helix steam pipe and the second double-helix steam pipe from bottom to top, and the steam is transported in the spiral steam pipe b of the first double-helix steam pipe and the second double-helix steam pipe from top to bottom, so that heat exchange is simultaneously performed on water in a heat exchange box from both ends, thereby improving the uniformity of heat exchange of water in the heat exchange box, and transporting steam along the first double-helix steam pipe and the second double-helix steam pipe increases the steam travel in the heat exchange box, thereby improving the efficiency of heat exchange of water in the heat exchange box; at the same time, a spiral drainage groove is provided in the spiral steam pipe a, which is convenient for discharging the condensation pipe of the spiral drainage groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic cross-sectional view of a steam heating device according to the present invention;

[0015] Figure 2 This is a schematic structural diagram of the spiral steam pipe a of the present invention;

[0016] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the part A in the middle;

[0017] Figure 4This is a schematic diagram of the top view of a steam heating device of the present invention;

[0018] Figure 5 This is a schematic diagram of the connection structure between the heat conducting plate and the first double-helix steam pipe and the second double-helix steam pipe of the utility model;

[0019] In the figure, 1. heat exchange box; 2. support foot; 3. first double spiral steam pipe; 4. second double spiral steam pipe; 5. spiral steam pipe a; 6. spiral steam pipe b; 7. air inlet pipe fitting; 8. air inlet main pipe; 9. air inlet branch pipe a; 10. air inlet branch pipe b; 11. tee pipe; 12. air outlet pipe fitting; 13. air outlet pipe a; 14. air outlet pipe b; 15. vapor-liquid separator; 16. spiral drain trough; 17. spiral partition; 18. drain hole; 19. guide pipe; 20. exhaust pipe; 21. drain pipe; 22. heat conducting plate. DETAILED DESCRIPTION

[0020] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0021] Example

[0022] See also Figures 1 to 5The utility model provides a steam heating device, including a heat exchange box 1, a first double spiral steam pipe 3, a second double spiral steam pipe 4, an air inlet pipe 7, an air outlet pipe 12 and a vapor-liquid separator 15. The bottom of the heat exchange box 1 is connected to a plurality of supporting legs 2, which play the role of supporting and fixing the heat exchange box 1. The heat exchange box 1 is connected with a water inlet pipe and a water outlet pipe. The first double spiral steam pipe 3 and the second double spiral steam pipe 4 are respectively arranged in the heat exchange box 1, and the second double spiral steam pipe 4 is located on the inner side of the first double spiral steam pipe 3. The first double spiral steam pipe 3 and the second double spiral steam pipe 4 each include a spiral steam pipe a5 and a spiral steam pipe b6. The air inlet ends of the spiral steam pipe a5 and the spiral steam pipe b6 are respectively connected with the air inlet pipe 7, and steam is transported to the spiral steam pipe a5 and the spiral steam pipe b6 through the air inlet pipe 7. The air outlet ends of the spiral steam pipe a5 and the spiral steam pipe b6 are respectively connected with the air outlet pipe 12. After the steam in the steam pipe a5 and the spiral steam pipe b6 realizes heat exchange with the water in the heat exchange box 1, the steam is discharged through the air outlet pipe 12. The direction of the steam in the spiral steam pipe a5 is from bottom to top, and the direction of the steam in the spiral steam pipe b6 is from top to bottom. When the steam flows in the spiral steam pipe a5 and the spiral steam pipe b6 for heat exchange, the temperature of the steam gradually decreases. The closer to the output end, the lower the steam temperature, thereby causing uneven temperature at the upper and lower ends of the water body in the heat exchange box 1. The direction of the steam in the spiral steam pipe a5 of this device is from bottom to top, and the direction of the steam in the spiral steam pipe b6 is from top to bottom. The temperature of the water body in the heat exchange box 1 is uniform. The air outlet pipe 12 is connected to the vapor-liquid separator 15 to realize vapor-liquid separation. A spiral drainage groove 16 is provided in the spiral steam pipe a5. The spiral drainage groove 16 is connected to the water outlet end of the vapor-liquid separator 15 to discharge the condensed water formed in the spiral steam pipe a5.

[0023] See also Figure 2 and Figure 3 A spiral partition 17 with an arc-shaped cross section is provided inside the spiral steam pipe a5 to separate the steam and condensed water in the spiral steam pipe a5. A plurality of drainage holes 18 are provided on the spiral partition 17. Several of the drainage holes 18 are connected to the spiral drainage groove 16. The condensed water flows into the drainage groove through the drainage holes 18. Several of the drainage holes 18 are arranged at an angle, which can reduce the steam transported from bottom to top into the drainage holes 18 and facilitate the discharge of condensed water.

[0024] The air intake pipe 7 includes an air intake main pipe 8, an air intake branch pipe a9, an air intake branch pipe b10 and a tee pipe 11. The air intake main pipe 8 is connected to one end of the tee pipe 11, and the other two ends of the tee pipe 11 are respectively connected to the air intake branch pipe a9 and the air intake branch pipe b10, and steam can be transported into the air intake branch pipe a9 and the air intake branch pipe b10. The air intake branch pipe a9 is connected to the air intake end of the spiral steam pipe a5, and the air intake branch pipe b10 is connected to the air intake end of the spiral steam pipe b6. Steam is transported to the spiral steam pipe a5 through the air intake branch pipe a9, and steam is transported to the spiral steam pipe b6 through the air intake branch pipe b10.

[0025] The outlet pipe 12 includes an outlet pipe a13 and an outlet pipe b14. The outlet pipe a13 is connected to the outlet end of the spiral steam pipe b6, and the outlet pipe b14 is connected to the outlet end of the spiral steam pipe a5. The outlet pipe b14 is connected to the outlet pipe a13, and the steam after heat exchange in the spiral steam pipes a5 and b6 can be discharged. The end of the outlet pipe a13 is connected to the vapor-liquid separator 15 to achieve vapor-liquid separation.

[0026] The gas outlet end of the vapor-liquid separator 15 is connected to the exhaust pipe 20, and the water outlet end of the vapor-liquid separator 15 is connected to the drain pipe 21, which can separate gas and liquid. The bottom of the spiral steam pipe is connected to the guide pipe 19, and the output end of the guide pipe 19 is connected to the drain pipe 21. The condensed water generated in the spiral steam pipe is guided to the drain pipe 21 through the guide pipe 19.

[0027] The outer walls of the spiral steam pipe a5 and the spiral steam pipe b6 are respectively connected with a plurality of heat conducting sheets 22, which can increase the heat conducting area and improve the heat exchange effect.

[0028] During use, steam is conveyed to the first double-helix steam pipe 3 and the second double-helix steam pipe 4 through the air inlet pipe 7, and the direction of steam conveyed in the spiral steam pipe a5 of the first double-helix steam pipe 3 and the second double-helix steam pipe 4 is from bottom to top, and the direction of steam conveyed in the spiral steam pipe b6 of the first double-helix steam pipe 3 and the second double-helix steam pipe 4 is from top to bottom, thereby improving the uniformity of heat exchange of water in the heat exchange box 1, and the steam after heat exchange is discharged through the air outlet pipe 12, and the vapor-liquid separator 15 realizes vapor-liquid separation, and the condensed water generated in the spiral steam pipe a5 flows into the guide pipe 19 from top to bottom along the pipe wall.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steam heating device, characterized in that: The invention comprises a heat exchange box (1), a first double-helix steam pipe (3), a second double-helix steam pipe (4), an air inlet pipe (7), an air outlet pipe (12) and a vapor-liquid separator (15), wherein the bottom of the heat exchange box (1) is connected to a plurality of supporting legs (2), the first double-helix steam pipe (3) and the second double-helix steam pipe (4) are respectively arranged in the heat exchange box (1), the first double-helix steam pipe (3) and the second double-helix steam pipe (4) both comprise a spiral steam pipe a (5) and a spiral steam pipe b (6), the spiral steam pipe a (5) and the spiral steam pipe b (6) are respectively arranged in the heat exchange box (1), and the first double-helix steam pipe (3) and the second double-helix steam pipe (4) both comprise a spiral steam pipe a (5) and a spiral steam pipe b (6), and the spiral steam pipe a (5) and the spiral steam pipe b (6) are respectively arranged in the heat exchange box (1). The air inlet end of the spiral steam pipe b (6) is respectively communicated with the air inlet pipe fitting (7), and the air outlet ends of the spiral steam pipe a (5) and the spiral steam pipe b (6) are respectively communicated with the air outlet pipe fitting (12). The direction of steam in the spiral steam pipe a (5) is from bottom to top, and the direction of steam in the spiral steam pipe b (6) is from top to bottom. The air outlet pipe fitting (12) is connected to the vapor-liquid separator (15). A spiral drainage groove (16) is provided in the spiral steam pipe a (5), and the spiral drainage groove (16) is communicated with the water outlet end of the vapor-liquid separator (15).

2. A steam heating device according to claim 1, characterized in that: A spiral partition plate (17) with an arc-shaped cross section is provided inside the spiral steam pipe a (5), and a plurality of drainage holes (18) are provided on the spiral partition plate (17). The plurality of drainage holes (18) are connected to the spiral drainage groove (16), and the plurality of drainage holes (18) are arranged at an angle.

3. A steam heating device according to claim 1, characterized in that: The air intake pipe (7) comprises an air intake main pipe (8), an air intake branch pipe a (9), an air intake branch pipe b (10) and a tee pipe (11). The air intake main pipe (8) is connected to one end of the tee pipe (11), and the other two ends of the tee pipe (11) are respectively connected to the air intake branch pipe a (9) and the air intake branch pipe b (10). The air intake branch pipe a (9) is connected to the air intake end of the spiral steam pipe a (5), and the air intake branch pipe b (10) is connected to the air intake end of the spiral steam pipe b (6).

4. A steam heating device according to claim 3, characterized in that: The gas outlet pipe (12) comprises a gas outlet pipe a (13) and a gas outlet pipe b (14), wherein the gas outlet pipe a (13) is connected to the gas outlet end of the spiral steam pipe b (6), the gas outlet pipe b (14) is connected to the gas outlet end of the spiral steam pipe a (5), the gas outlet pipe b (14) is connected to the gas outlet pipe a (13), and the end of the gas outlet pipe a (13) is connected to the gas-liquid separator (15).

5. The steam heating device according to claim 1, characterized in that: The gas outlet end of the gas-liquid separator (15) is connected to the exhaust pipe (20), and the water outlet end of the gas-liquid separator (15) is connected to the drain pipe (21).

6. A steam heating device according to claim 5, characterized in that: The bottom of the spiral steam pipe is connected to a flow guide pipe (19), and the output end of the flow guide pipe (19) is connected to a drainage pipe (21).

7. The steam heating device according to claim 1, characterized in that: The outer walls of the spiral steam pipe a (5) and the spiral steam pipe b (6) are respectively connected to a plurality of heat conducting plates (22).

Images