Horizontal steam generator

Abstract

The utility model discloses a horizontal steam generator and relates to a device for producing steam. The horizontal steam generator is mainly designed for solving the problem that an existing horizontal steam generator is poor in heat exchange effect. The boiler comprises a boiler body, a lower smoke box is arranged in a lower boiler barrel in the boiler body, a water jacket is arranged in the space between the lower smoke box and the lower boiler barrel, and a flue in the boiler body is divided into an upper flue, a middle flue and a lower flue by two partition plates; a distance is reserved between the right end of the lower partition plate and the right wall of the flue, and a distance is reserved between the left end of the upper partition plate and the left wall of the flue; and a smoke outlet pipe of the lower smoke box is communicated with the lower flue. A smoke pipe is connected between the two upper smoke boxes in the upper boiler barrel, the upper smoke box on the left side is communicated with a chimney, and a smoke inlet pipe of the upper smoke box on the right side is communicated with an upper flue. And the upper end of the water pipe in the flue is communicated with the upper boiler barrel. The inner walls of the smoke pipe and the water pipe are provided with spiral grooves, and the outer walls are provided with fins. The boiler body is provided with a water inlet and a steam outlet. A feeding port is formed in the top of the combustion chamber. A furnace neck is connected between the combustion chamber and the lower smoke box. The heat exchanger can improve the heat exchange efficiency.

Description

Technical field:

[0001] The utility model relates to a device for producing steam, in particular to a horizontal steam generator. Background technology:

[0002] The existing horizontal steam generator includes a furnace body, which is equipped with multiple smoke pipes and water pipes. The furnace body is provided with a water inlet. The high-temperature flue gas generated by the combustion of fuel exchanges heat with the water in the water pipe in the process of entering the chimney through the smoke box, flue and smoke pipe. The steam generated by the heated water is discharged from the steam outlet on the top of the furnace body and enters the external steam pipe connected to it.

[0003] Its shortcomings are:

[0004] The smoke pipe and water pipe are both bare pipes, with a small heat exchange area with water and low heat utilization rate; the smoke travels a short distance, resulting in poor heat exchange effect and energy waste. Summary of the invention:

[0005] The technical problem to be solved by the utility model is to provide a horizontal steam generator with high heat utilization rate and good heat exchange effect.

[0006] The purpose of the utility model is achieved as follows: it includes a combustion chamber and a furnace body, the combustion chamber is located on the right side of the furnace body;

[0007] The bottom of the furnace body is provided with a lower drum, the lower smoke box is connected to the lower drum, the space between the outer wall of the lower smoke box and the inner wall of the lower drum is a water jacket, the furnace body is provided with a water inlet at a position corresponding to the water jacket, and a smoke outlet pipe is provided at the left end of the lower smoke box;

[0008] A flue is provided in the middle of the furnace body, and an upper partition and a lower partition are fixed in the flue, which are arranged up and down. The two partitions divide the flue into an upper flue, a middle flue and a lower flue. There is a distance between the right end of the lower partition and the right inner wall of the flue, and there is a distance between the left end of the upper partition and the left inner wall of the flue. The smoke outlet pipe of the lower smoke box extends through the lower boiler drum and is connected to the lower flue.

[0009] An upper boiler drum is provided at the upper part of the furnace body, and upper smoke boxes are fixed at the left and right ends of the upper boiler drum respectively. Several smoke pipes are connected between the two upper smoke boxes. The upper smoke box on the left is connected to the chimney, and the chimney is fixed on the furnace body. A smoke inlet pipe is provided on the upper smoke box on the right side, and the smoke inlet pipe is connected to the upper flue after extending through the upper boiler drum.

[0010] A plurality of water-cooled wall tubes are arranged in the furnace body outside the flue. The lower ends of the water-cooled wall tubes are communicated with the water jacket between the lower smoke box and the lower boiler drum, and the upper ends of the water-cooled wall tubes are communicated with the upper boiler drum.

[0011] A plurality of water pipes are also provided in the flue, the lower ends of the water pipes are communicated with the water jacket between the lower smoke box and the lower boiler drum, and the upper ends of the water pipes are communicated with the upper boiler drum after passing through the lower partition and the upper partition.

[0012] The upper partition and the lower partition are both made of refractory bricks and refractory cement.

[0013] The smoke pipe and the water pipe are both threaded finned tubes. The inner wall of the threaded finned tube is provided with a spiral groove (i.e., a thread shape), and the outer wall of the threaded finned tube is provided with fins.

[0014] The top of the furnace body is equipped with a steam outlet, a pressure gauge mounting seat, and a safety valve mounting seat. The pressure gauge mounting seat is used to install the pressure gauge, and the safety valve mounting seat is used to install the safety valve. The furnace body is equipped with ash cleaning doors at the position corresponding to the lower smoke box and the flue.

[0015] A dust cleaning door and a fire viewing door are provided on the side of the combustion chamber, and a feed port is provided on the top of the combustion chamber. The feed port can be connected to a feeder, and the feeder can be connected to a hopper.

[0016] A furnace neck is connected between the combustion chamber and the lower smoke box in the furnace body, and the furnace neck is a high-temperature resistant cast furnace neck.

[0017] The furnace body is also equipped with a water level gauge and a sewage outlet.

[0018] The advantages of the utility model are as follows: water enters the water jacket between the lower boiler drum and the lower smoke box from the water inlet, and then enters the upper boiler drum through the water pipe and the water-cooled wall tube; the high-temperature flue gas in the combustion chamber enters the lower smoke box through the furnace neck, and then enters the upper smoke box on the right side from the smoke outlet pipe on the left side of the lower smoke box through the lower smoke duct, the middle smoke duct, and the upper smoke duct, and then enters the upper smoke box on the left side through each smoke pipe and is discharged from the chimney. The high-temperature flue gas exchanges heat with the water in the water pipe during the flow, and the generated steam is discharged through the steam outlet.

[0019] Since the flue is provided with an upper partition and a lower partition, the upper and lower partitions divide the flue into an upper flue, a middle flue and a lower flue, which can extend the travel distance of the high-temperature flue gas and improve the heat exchange effect.

[0020] Since the smoke pipe and water pipe are threaded finned tubes, the inner wall of the tube is provided with spiral grooves, which increases the travel time of the smoke or water. The outer wall of the tube is provided with fins, which increases the heat exchange area, so the heat exchange efficiency can be improved, the heat exchange effect is good, and energy is saved. Description of the drawings:

[0021] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 It is a side view structural diagram of the utility model;

[0023] Figure 3 This is a side view of the connection state of the upper drum and the lower drum in the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the smoke tube in the utility model;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the smoke tube in the utility model. Specific implementation method:

[0026] The following combination Figure 1-5 Further explain the utility model;

[0027] It includes a combustion chamber 1 and a furnace body 2, wherein the combustion chamber is located on the right side of the furnace body;

[0028] The bottom of the furnace body is provided with a lower drum 3, a lower smoke box 4 is connected to the lower drum, the space between the outer wall of the lower smoke box and the inner wall of the lower drum is a water jacket 5, the furnace body is provided with a water inlet 6 at the position corresponding to the water jacket, and a smoke outlet pipe 7 is provided at the left end of the lower smoke box;

[0029] A flue is provided in the middle of the furnace body, and an upper partition 8 and a lower partition 9 are fixed in the flue, which are arranged up and down. The two partitions divide the flue into an upper flue 10, a middle flue 11, and a lower flue 12; there is a distance between the right end of the lower partition and the right inner wall of the flue, and there is a distance between the left end of the upper partition and the left inner wall of the flue; the smoke outlet pipe of the lower smoke box extends through the lower boiler drum and is connected to the lower flue.

[0030] An upper drum 13 is provided at the upper part of the furnace body, and upper smoke boxes 14 are fixed at the left and right ends of the upper drum respectively. Several smoke pipes 15 are connected between the two upper smoke boxes. The upper smoke box on the left is connected to the chimney 16, which is fixed to the furnace body. A smoke inlet pipe is provided on the upper smoke box on the right, and the smoke inlet pipe 17 is connected to the upper flue after extending through the upper drum.

[0031] A plurality of water-cooled wall tubes 18 are provided in the furnace body outside the flue. The lower ends of the water-cooled wall tubes are communicated with the water jacket between the lower smoke box and the lower boiler drum, and the upper ends of the water-cooled wall tubes are communicated with the upper boiler drum.

[0032] A plurality of water pipes 19 are also provided in the flue, the lower ends of the water pipes being communicated with the water jacket between the lower smoke box and the lower boiler drum, and the upper ends of the water pipes being communicated with the upper boiler drum after passing through the lower partition and the upper partition.

[0033] The upper partition and the lower partition are both made of refractory bricks and refractory cement.

[0034] The smoke pipe and water pipe are both threaded finned tubes.

[0035] The inner wall of the threaded finned tube is provided with a spiral groove (ie, a thread shape) 20 , and the outer wall of the threaded finned tube is provided with fins 21 .

[0036] The top of the furnace body is provided with a steam outlet 22, a pressure gauge mounting seat 23, and a safety valve mounting seat 24. The pressure gauge mounting seat is used to install the pressure gauge, and the safety valve mounting seat is used to install the safety valve. The furnace body is provided with ash cleaning doors at the positions corresponding to the lower smoke box and the flue.

[0037] A dust cleaning door 25 and a fire viewing door 26 are provided on the side of the combustion chamber, and a feed port 27 is provided on the top of the combustion chamber. The feed port can be connected to a feeder 28, and the feeder can be connected to a hopper 29.

[0038] A furnace neck 30 is connected between the combustion chamber and the lower smoke box in the furnace body, and the furnace neck is a high-temperature resistant cast furnace neck.

[0039] The furnace body is also provided with a water level gauge 31 and a sewage outlet 32.

[0040] Water enters the water jacket between the lower boiler drum and the lower smoke box from the water inlet, and then enters the upper boiler drum through the water pipe and water-cooled wall tube; the high-temperature flue gas in the combustion chamber enters the lower smoke box through the furnace neck, and then enters the upper smoke box on the right side from the smoke outlet pipe on the left side of the lower smoke box through the lower smoke duct, the middle smoke duct, and the upper smoke duct, and then enters the upper smoke box on the left side through each smoke pipe and is discharged from the chimney. During the process of traveling, the high-temperature flue gas exchanges heat with the water in the water pipe, and the generated steam is discharged through the steam outlet.

[0041] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A horizontal steam generator, comprising a combustion chamber (1) and a furnace body (2), wherein the combustion chamber is located on the right side of the furnace body; a lower drum (3) is provided at the bottom of the furnace body, a lower smoke box (4) is connected to the lower drum, a space between the outer wall of the lower smoke box and the inner wall of the lower drum is a water jacket (5), the furnace body is provided with a water inlet (6) at a position corresponding to the water jacket, and a smoke outlet pipe (7) is provided at the left end of the lower smoke box; and the invention is characterized in that: A flue is provided in the middle of the furnace body, and an upper partition (8) and a lower partition (9) are fixed in the flue, which are arranged in an upper and lower manner. The two partitions divide the flue into an upper flue (10), a middle flue (11), and a lower flue (12). A distance is left between the right end of the lower partition and the right inner wall of the flue, and a distance is left between the left end of the upper partition and the left inner wall of the flue. The smoke outlet pipe of the lower smoke box extends through the lower boiler drum and is connected to the lower flue. An upper drum (13) is provided in the upper part of the furnace body, and upper smoke boxes (14) are fixed at the left and right ends of the upper drum respectively. A plurality of smoke pipes (15) are connected between the two upper smoke boxes. The upper smoke box on the left is connected to a chimney (16) fixed to the furnace body. A smoke inlet pipe is provided on the upper smoke box on the right side. The smoke inlet pipe (17) extends through the upper drum and is connected to the upper flue. A plurality of water pipes (19) are also provided in the flue, the lower ends of the water pipes being connected to the water jacket between the lower smoke box and the lower boiler drum, and the upper ends of the water pipes being connected to the upper boiler drum after passing through the lower partition and the upper partition. The smoke pipe and water pipe are both threaded finned tubes; The inner wall of the threaded finned tube is provided with a spiral groove (20), the outer wall of the threaded finned tube is provided with a fin (21), and the top of the furnace body is provided with a steam outlet (22); A furnace neck (30) is connected between the combustion chamber and the lower smoke box in the furnace body.

2. The horizontal steam generator according to claim 1, characterized in that: The top of the furnace body is also provided with a pressure gauge mounting seat (23) and a safety valve mounting seat (24), and the furnace body is provided with ash cleaning doors at positions corresponding to the lower smoke box and the position of the flue.

3. The horizontal steam generator according to claim 1, characterized in that: The upper partition and the lower partition are both made of refractory bricks and refractory cement.

4. The horizontal steam generator according to claim 1, characterized in that: A plurality of water-cooled wall tubes (18) are arranged in the furnace body outside the flue, wherein the lower ends of the water-cooled wall tubes are communicated with the water jacket between the lower smoke box and the lower boiler drum, and the upper ends of the water-cooled wall tubes are communicated with the upper boiler drum.

5. The horizontal steam generator according to claim 1, characterized in that: A ash cleaning door (25) and a fire viewing door (26) are provided on the side of the combustion chamber, and a feed port (27) is provided on the top of the combustion chamber.

6. The horizontal steam generator according to claim 1, characterized in that: The furnace neck is a high temperature resistant cast furnace neck.

7. The horizontal steam generator according to claim 1, characterized in that: The furnace body is also provided with a water level gauge (31) and a sewage outlet (32).

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