Flash steam heat energy recovery device

Abstract

The utility model discloses a flash steam heat energy recovery device which comprises a device body, the device body comprises a high-temperature condensate water tank, a flash steam pipe, an overflow pipe, a condensate water inlet pipe and a heat exchange device, the flash steam pipe is installed on the top of the high-temperature condensate water tank, and the overflow pipe and the condensate water inlet pipe are both installed in the high-temperature condensate water tank. The heat exchange device is mounted at the top of the flash steam pipe; the flash steam pipe comprises a shell-and-tube heat exchanger, a cold water inlet pipe and a hot water outlet pipe, the cold water inlet pipe is installed at the input end of the shell-and-tube heat exchanger, the hot water outlet pipe is installed at the output end of the shell-and-tube heat exchanger, a pneumatic film adjusting valve is installed in the cold water inlet pipe, and a temperature sensor is installed in the hot water outlet pipe. An air outlet is formed in the top of the tubular heat exchanger. The device can be used for recovering the heat energy of the flash steam discharged by the high-temperature condensate water tank for heating production water, so that the aims of energy conservation and emission reduction are fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field of condensed water tanks, in particular to a flash steam heat energy recovery device. Background Art

[0002] Steam is used as a heat source in many parts of industrial systems. During the steam heating process, it is cooled to condensed water. Due to the different heating steam pressures, the condensed water temperature also varies. For example, the brewery wort boiling pressure is 2 bar, and the condensed water outlet temperature can reach 132°C; the condensed water is recycled to the condensed water tank. Since the condensed water tank is at normal pressure, the condensed water temperature is up to 100°C. In this way, the 132°C condensed water flashes, and the excess heat is discharged as secondary steam; the temperature of each ton of 132°C condensed water drops to 100°C, releasing 134,400KJ of heat, which is equivalent to 62Kg of steam at 2bar pressure.

[0003] The existing condensate tank has the following defects:

[0004] The existing condensate tank does not have a flash steam recovery device, and the flash steam is directly discharged into the atmosphere through the exhaust port, causing energy waste. Therefore, a solution is needed. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides a flash steam heat energy recovery device to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a flash steam heat energy recovery device, including a device body, the device body includes a high-temperature condensate water tank, a flash steam pipe, an overflow pipe, a condensate water inlet pipe and a heat exchange device, the flash steam pipe is installed on the top of the high-temperature condensate water tank, the overflow pipe and the condensate water inlet pipe are both installed in the high-temperature condensate water tank, and the heat exchange device is installed on the top of the flash steam pipe; the flash steam pipe includes a shell and tube heat exchanger, a cold water inlet pipe and a hot water outlet pipe, the cold water inlet pipe is installed at the input end of the shell and tube heat exchanger, the hot water outlet pipe is installed at the output end of the shell and tube heat exchanger, a pneumatic diaphragm regulating valve is installed in the cold water inlet pipe, a temperature sensor is installed in the hot water outlet pipe, an air inlet is provided at the bottom of the shell and tube heat exchanger, and an air outlet is provided at the top of the shell and tube heat exchanger.

[0009] Preferably, the overflow pipe is located at the left end inside the high-temperature condensate water tank, a structural pipe is provided on the top of the overflow pipe, the structural pipe is in a U-shaped structure, the structural pipe and the overflow pipe are smoothly transitioned and integrally processed and formed, the bottom discharge end of the overflow pipe is located at the bottom of the outer end of the high-temperature condensate water tank, and several groups of fixed columns distributed in a column-like and equidistant manner are provided at the overflow pipe and the inner wall of the high-temperature condensate water tank.

[0010] Preferably, the top and bottom of the high-temperature condensed water tank are both funnel-shaped structures, and a cleaning port is opened on the top of the high-temperature condensed water tank, and a cleaning brush is installed in the cleaning port.

[0011] Preferably, a plurality of groups of support columns distributed in a circular and equidistant manner are installed at the bottom of the high-temperature condensate water tank, and the support columns are in an I-shaped structure. A group of support feet distributed in a symmetrical manner are installed at the bottom of the support columns by bolts, and the support feet are in a suction cup-shaped structure.

[0012] (III) Beneficial effects

[0013] The utility model provides a flash steam heat energy recovery device. It has the following beneficial effects:

[0014] This flash steam heat recovery device recovers the heat energy of the flash steam discharged from the high-temperature condensate tank by adding a heat exchange system, which is used to heat production water, thereby achieving the goal of energy conservation and emission reduction. The heat exchange device consists of a shell-and-tube heat exchanger, a production water (cold water) inlet pipe, a production water hot water outlet pipe, a pneumatic diaphragm regulating valve, and a temperature sensor, so it has a low manufacturing cost, a simple installation method, and is easy to use on a high-temperature condensate tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the heat exchange device of the utility model.

[0017] In the figure, 1. device body; 2. high-temperature condensate tank; 3. flash steam pipe; 4. overflow pipe; 5. condensate inlet pipe; 6. heat exchange device; 7. shell-and-tube heat exchanger; 8. cold water inlet pipe; 9. hot water outlet pipe; 10. air inlet; 11. air outlet; 12. pneumatic diaphragm regulating valve; 13. temperature sensor; 14. structural pipe; 15. fixing column; 16. cleaning port; 17. cleaning brush; 18. support column; 19. support foot. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 The embodiment of the utility model provides a technical solution: a flash steam heat energy recovery device, comprising a device body 1, the device body 1 comprises a high-temperature condensed water tank 2, a flash steam pipe 3, an overflow pipe 4, a condensed water inlet pipe 5 and a heat exchange device 6, the flash steam pipe 3 is installed on the top of the high-temperature condensed water tank 2, the overflow pipe 4 and the condensed water inlet pipe 5 are both installed in the high-temperature condensed water tank 2, and the heat exchange device 6 is installed on the top of the flash steam pipe 3;

[0020] The flash steam pipe 3 includes a shell and tube heat exchanger 7, a cold water inlet pipe 8 and a hot water outlet pipe 9. The cold water inlet pipe 8 is installed at the input end of the shell and tube heat exchanger 7, and the hot water outlet pipe 9 is installed at the output end of the shell and tube heat exchanger 7. A pneumatic diaphragm regulating valve 12 is installed in the cold water inlet pipe 8, and a temperature sensor 13 is installed in the hot water outlet pipe 9. An air inlet 10 is provided at the bottom of the shell and tube heat exchanger 7, and an air outlet 11 is provided at the top of the shell and tube heat exchanger 7. When in use, the flash steam is discharged from the flash steam pipe 3 of the high-temperature condensed water tank 2, and the air inlet 11 is provided at the top of the shell and tube heat exchanger 7. The tube side of the shell and tube heat exchanger 7 entering the heat exchange device 6 exchanges heat with the production water. The production water (cold water) enters the shell side of the heat exchanger from the cold water inlet pipe 8. After heat exchange, the hot water is discharged from the hot water outlet pipe 9. A pneumatic diaphragm regulating valve 12 is installed in the cold water inlet pipe 8, and a temperature sensor 13 is installed in the hot water outlet pipe 9. The opening of the pneumatic diaphragm regulating valve 12 is adjusted by feedback of the outlet water temperature to ensure that the outlet water temperature meets the production process requirements. The condensed water generated after the flash steam is cooled flows back to the high-temperature condensed water tank 2 by gravity, and the non-condensable gas is discharged from the non-condensable gas discharge outlet 11.

[0021] Furthermore, the overflow pipe 4 is located at the left end inside the high-temperature condensed water tank 2, and a structural pipe 14 is provided on the top of the overflow pipe 4. The structural pipe 14 is in a U-shaped structure. The structural pipe 14 and the overflow pipe 4 are in a smooth transition and integrally processed structure. The bottom discharge end of the overflow pipe 4 is located at the bottom of the outer end of the high-temperature condensed water tank 2. The overflow pipe 4 and the inner wall of the high-temperature condensed water tank 2 are provided with several groups of fixed columns 15 distributed in a column-like and equidistant manner. The structural pipe 14 with a U-shaped structure on the top of the overflow pipe 4 can effectively increase the capacity of the high-temperature condensed water tank 2, and when there is too much condensed water, it can be discharged through the overflow pipe 4.

[0022] Differently, the top and bottom of the high-temperature condensed water tank 2 are both funnel-shaped structures. A cleaning port 16 is opened on the top of the high-temperature condensed water tank 2, and a cleaning brush 17 is installed in the cleaning port 16. The staff can insert the cleaning brush 17 or other cleaning equipment into the cleaning port 16 to further clean the inside of the high-temperature condensed water tank 2.

[0023] Specifically, a plurality of groups of support columns 18 distributed in a circular and equidistant manner are installed at the bottom of the high-temperature condensed water tank 2. The support columns 18 are in an I-shaped structure. A group of support feet 19 distributed in a symmetrical manner are installed at the bottom of the support columns 18 by bolts. The support feet 19 are in a suction cup structure. The support columns 18 with an I-shaped structure have strong structural stability and high support stability, and the support feet 19 with a suction cup structure can be adsorbed to the ground, thereby further improving the stability of the high-temperature condensed water tank 2.

[0024] Working principle: During operation, flash steam is discharged through the flash steam pipe 3 from the high-temperature condensate water tank 2, and enters the tube side of the shell and tube heat exchanger 7 of the heat exchange device 6 to exchange heat with the production water. The production water (cold water) enters the shell side of the heat exchanger from the cold water inlet pipe 8. After heat exchange, the hot water is discharged from the hot water outlet pipe 9. A pneumatic diaphragm regulating valve 12 is installed in the cold water inlet pipe 8, and a temperature sensor 13 is installed in the hot water outlet pipe 9. The opening of the pneumatic diaphragm regulating valve 12 is adjusted by feedback from the outlet water temperature to ensure that the outlet water temperature meets the production process requirements. The condensed water generated after the flash steam is cooled flows back to the high-temperature condensate water tank 2 by gravity, and the non-condensable gas is discharged from the non-condensable gas discharge outlet 11.

[0025] The utility model includes 1. device body; 2. high-temperature condensate water tank; 3. flash steam pipe; 4. overflow pipe; 5. condensate water inlet pipe; 6. heat exchange device; 7. shell and tube heat exchanger; 8. cold water inlet pipe; 9. hot water outlet pipe; 10. air inlet; 11. air outlet; 12. pneumatic diaphragm regulating valve; 13. temperature sensor; 14. structural pipe; 15. fixing column; 16. cleaning port; 17. cleaning brush; 18. supporting column; 19. supporting foot. All the components are universal standard parts or components known to the technicians in this field, and their structures and principles can be known by the technicians in this field through the technical manual or through conventional experimental methods. The problem solved by the utility model is that the existing condensate water tank does not have a flash steam recovery device, and the flash steam is directly discharged into the atmosphere through the exhaust port, resulting in energy waste. The utility model can recover the heat energy of the flash steam discharged from the high-temperature condensate water tank through the combination of the above components, and use it for heating production water, so as to achieve the goal of energy saving and emission reduction.

[0026] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flash steam heat recovery device, characterized in that: The device comprises a device body (1), wherein the device body (1) comprises a high-temperature condensed water tank (2), a flash steam pipe (3), an overflow pipe (4), a condensed water inlet pipe (5) and a heat exchange device (6), wherein the flash steam pipe (3) is installed on the top of the high-temperature condensed water tank (2), the overflow pipe (4) and the condensed water inlet pipe (5) are both installed in the high-temperature condensed water tank (2), and the heat exchange device (6) is installed on the top of the flash steam pipe (3); The flash steam pipe (3) comprises a shell and tube heat exchanger (7), a cold water inlet pipe (8) and a hot water outlet pipe (9); the cold water inlet pipe (8) is installed at the input end of the shell and tube heat exchanger (7); the hot water outlet pipe (9) is installed at the output end of the shell and tube heat exchanger (7); a pneumatic diaphragm regulating valve (12) is installed in the cold water inlet pipe (8); a temperature sensor (13) is installed in the hot water outlet pipe (9); an air inlet (10) is provided at the bottom of the shell and tube heat exchanger (7); and an air outlet (11) is provided at the top of the shell and tube heat exchanger (7).

2. A flash steam heat recovery device according to claim 1, characterized in that: The overflow pipe (4) is located at the left end inside the high-temperature condensed water tank (2), a structural pipe (14) is provided at the top of the overflow pipe (4), the structural pipe (14) is in a U-shaped structure, the structural pipe (14) and the overflow pipe (4) are in a smooth transition and integrally processed structure, the bottom discharge end of the overflow pipe (4) is located at the bottom of the outer end of the high-temperature condensed water tank (2), and a plurality of groups of fixed columns (15) are arranged at equal distances in a row at the inner wall of the overflow pipe (4) and the high-temperature condensed water tank (2).

3. A flash steam heat recovery device according to claim 1, characterized in that: The top and bottom of the high-temperature condensed water tank (2) are both funnel-shaped structures, and a cleaning port (16) is provided on the top of the high-temperature condensed water tank (2), and a cleaning brush (17) is installed on the cleaning port (16).

4. A flash steam heat recovery device according to claim 1, characterized in that: A plurality of groups of support columns (18) distributed in a circular and equidistant manner are installed at the bottom of the high-temperature condensed water tank (2), and the support columns (18) are in an I-shaped structure. A group of support feet (19) distributed in a symmetrical manner are installed at the bottom of the support columns (18) by bolts, and the support feet (19) are in a suction cup-shaped structure.

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