Waste heat recovery device of deaerator

Abstract

The utility model discloses a deaerator waste heat recovery device, and particularly relates to the technical field of deaerator waste heat recovery, which comprises a box body and a deaerator I. The front side of the left part of the upper end of the outer surface of a heat insulation box is fixedly connected with a ventilation assembly, and the inner cavity of the heat insulation box is fixedly connected with a heat conduction mechanism; the lower portion of the right end of the outer surface of the heat insulation box is fixedly connected with an exhaust assembly, the middle of the left end of the outer surface of the heat insulation box is fixedly connected with an air supply mechanism, and the lower portion of the inner cavity of the box body is fixedly connected with a liquid storage mechanism. According to the waste heat recovery device of the deaerator, the effect of preventing the air pressure in the inner cavity of the heat insulation box from being too high can be achieved through the ventilation assembly, meanwhile, the effect of conveniently absorbing heat of high-temperature steam can be achieved through the heat conduction mechanism, and hot air in the inner cavity of the heat insulation box can be blown out to the outside under the effect of the air supply mechanism; and water drops can be collected through the liquid storage mechanism, so that the practicability and universality of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology for deaerators, and in particular to a waste heat recovery device for deaerators. Background Technology

[0002] A deaerator is a widely used device in thermal power plants, industrial boilers and other fields. Its main function is to remove oxygen and other non-condensable gases from boiler feedwater to prevent these gases from corroding thermal equipment, extend the service life of the equipment, and also help improve the operating efficiency and safety of the thermal system.

[0003] Deaerator waste heat recovery devices primarily utilize the waste heat carried by the steam or steam-water mixture discharged from the deaerator to heat other media (such as feed water, condensate, etc.), thereby improving energy utilization efficiency and reducing energy consumption. Its core principle is based on heat transfer, using suitable heat exchange equipment to release the deaerator waste heat to the medium requiring heating.

[0004] Chinese patent document CN218763346U discloses a waste heat recovery device for a boiler deaerator, comprising a high-pressure steam separator, a low-pressure steam separator, and a deaerator. The high-pressure steam separator is connected to a waste heat boiler inlet pipe, and its output end is connected to a steam turbine for steam supply. A desuperheating and depressurization unit is also connected to the high-pressure steam separator to supply low-pressure steam. This low-pressure steam supply is connected to the inlet of the low-pressure steam separator, and its outlet is connected to a non-condensable steam recovery pipe. An airtight valve is connected to the end of the non-condensable steam recovery pipe near the deaerator, and a steam exhaust pipe is connected to the exhaust end of the deaerator. The low-temperature, low-pressure gas is then supplied to the required equipment and pipelines via the low-pressure steam separator, improving the waste heat recovery efficiency. Simultaneously, when neither the high-pressure nor low-pressure steam separator's supply pipe requires steam, the gas is transported to the deaerator via the non-condensable steam recovery pipe and discharged after deaerator operation.

[0005] While the aforementioned patent documents can improve the recovery efficiency of waste heat gas during implementation, they cannot timely transport and discharge the water condensed from the high-temperature steam. The accumulation of a large amount of water leads to low thermal conductivity of the device, which affects the recovery effect of waste heat from the deaerator. Utility Model Content

[0006] The main purpose of this utility model is to provide a waste heat recovery device for deaerators, which can effectively solve the problem of timely transportation and discharge of water condensed from high-temperature steam.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A waste heat recovery device for a deaerator includes a housing and a deaerator. A gas supply pipe is fixedly connected to the upper right side of the outer surface of the housing, and the left input end of the gas supply pipe is fixedly connected to the right output end of the deaerator. A heat insulation box is fixedly connected to the upper part of the inner cavity of the housing. A ventilation assembly is fixedly connected to the upper left front side of the outer surface of the heat insulation box. A heat conduction mechanism is fixedly connected to the inner cavity of the heat insulation box. An exhaust assembly is fixedly connected to the lower right end of the outer surface of the heat insulation box. A temperature sensor is fixedly installed on the upper right wall of the inner cavity of the heat insulation box. An air supply mechanism is fixedly connected to the middle left end of the outer surface of the heat insulation box. A liquid storage mechanism is fixedly connected to the lower part of the inner cavity of the housing. A liquid level sensor is fixedly installed on the upper left side inside the liquid storage mechanism.

[0009] Preferably, the heat conduction mechanism includes a baffle heat conduction plate, and the left and right sides of the baffle heat conduction plate are alternately provided with a number of drainage grooves that communicate with the outside.

[0010] Preferably, the liquid storage mechanism includes a liquid storage tank, a water conveying frame is fixedly connected to the upper right part of the outer surface of the liquid storage tank, and a drain pipe is fixedly connected to the lower right part of the outer surface of the liquid storage tank.

[0011] Preferably, the ventilation component includes a ventilation pipe, and the upper part of the outer surface of the ventilation pipe has a plurality of ventilation holes arranged in a ring array to communicate with the outside. A dust cover is fixedly connected to the upper part of the outer surface of the ventilation pipe.

[0012] Preferably, the exhaust assembly includes an exhaust housing, and a plurality of exhaust pipes are fixedly connected at intervals on the right end of the outer surface of the exhaust housing, and a solenoid valve is installed and fixedly mounted in the inner cavity of each of the plurality of exhaust pipes.

[0013] Preferably, the air supply mechanism includes a mounting frame, a rotating shaft is rotatably connected to the middle of the inner cavity of the mounting frame, a fan blade is fixedly connected to the middle of the outer surface of the rotating shaft, a motor is fixedly mounted on the middle of the left end of the outer surface of the mounting frame, and the right output end of the motor is fixedly connected to the left end of the outer surface of the rotating shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model can prevent excessive air pressure in the inner cavity of the heat insulation box through the ventilation component, and can also facilitate the absorption of heat from high-temperature steam through the heat conduction mechanism, thus improving the practicality of the device. The exhaust component can facilitate the transportation of hot air from the inner cavity of the heat insulation box, and the air supply mechanism can blow the hot air from the inner cavity of the heat insulation box to the outside. Furthermore, the liquid storage mechanism can collect water droplets, thus improving the practicality and versatility of the device.

[0016] 2. This utility model uses a baffle heat-conducting plate to absorb the heat contained in the steam delivered to the inner cavity of the insulation box. When the deaerator continuously sprays steam, the baffle heat-conducting plate can continuously absorb the heat, thereby recovering the steam discharged from the deaerator. At the same time, several sets of drainage channels can discharge the condensed water droplets downwards into the inner cavity of the storage tank, avoiding the accumulation of a large amount of water droplets on the surface of the baffle heat-conducting plate and the loss of the heat absorbed by the baffle heat-conducting plate, thus improving the practicality and versatility of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the heat conduction mechanism and liquid storage mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the ventilation component and exhaust component of this utility model;

[0020] Figure 4 This is a schematic diagram of the air supply mechanism of this utility model.

[0021] In the diagram: 1. Housing; 2. Deaerator 1; 3. Gas supply pipe; 4. Insulation box; 5. Ventilation assembly; 51. Ventilation pipe; 52. Ventilation hole; 53. Dust cover; 6. Heat conduction mechanism; 61. Baffle heat conduction plate; 62. Drainage trough; 7. Air supply mechanism; 71. Mounting frame; 72. Rotating shaft; 73. Fan blade; 74. Motor; 8. Exhaust assembly; 81. Exhaust sleeve; 82. Exhaust pipe; 83. Solenoid valve; 9. Temperature sensor; 10. Liquid storage mechanism; 101. Liquid storage tank; 102. Water supply frame; 103. Drainage pipe; 11. Liquid level sensor. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1As shown, a waste heat recovery device for a deaerator includes a housing 1 and a deaerator 2. A gas supply pipe 3 is fixedly connected to the upper right side of the outer surface of the housing 1, and the left input end of the gas supply pipe 3 is fixedly connected to the right output end of the deaerator 2. A heat insulation box 4 is fixedly connected to the upper part of the inner cavity of the housing 1. A venting assembly 5 is fixedly connected to the upper left front side of the outer surface of the heat insulation box 4, which can prevent excessive air pressure inside the heat insulation box 4. A heat conduction mechanism 6 is fixedly connected to the inner cavity of the heat insulation box 4, which facilitates the absorption of heat from high-temperature steam. An exhaust assembly 8 is fixedly connected to the lower right end of the outer surface of the heat insulation box 4, which facilitates the delivery of hot air into the inner cavity of the heat insulation box 4. A temperature sensor 9 is fixedly installed on the upper right wall of the inner cavity of the heat insulation box 4. An air supply mechanism 7 is fixedly connected to the middle left end of the outer surface of the heat insulation box 4, which can blow the hot air from the inner cavity of the heat insulation box 4 to the outside. A liquid storage mechanism 10 is fixedly connected to the lower part of the inner cavity of the box 1, which can collect water droplets. A liquid level sensor 11 is fixedly installed on the upper left side inside the liquid storage mechanism 10.

[0024] To facilitate the absorption of heat from high-temperature steam, see [reference needed]. Figure 2 The heat conduction mechanism 6 includes a baffle heat conduction plate 61, and the left and right sides of the baffle heat conduction plate 61 are alternately provided with a number of drainage grooves 62 that communicate with the outside.

[0025] When the gas discharged from the deaerator 2 is transported to the inner cavity of the heat insulation box 4 along the gas transmission pipe 3, the hot gas will be transported to the lower part of the heat insulation box 4 through several drainage channels 62. During this period, the condensed water droplets will flow along the outer surface of the baffle heat conduction plate 61 until the water gradually flows down along the inner cavity of several drainage channels 62, and finally flows through the inner cavity of the water transmission frame 102 to the inner cavity of the liquid storage tank 101.

[0026] To achieve the goal of collecting water droplets, refer to... Figure 2 The liquid storage mechanism 10 includes a liquid storage tank 101. A water conveying frame 102 is fixedly connected to the upper right part of the outer surface of the liquid storage tank 101, and a drain pipe 103 is fixedly connected to the lower right part of the outer surface of the liquid storage tank 101, which can realize the function of discharging the water stored in the inner cavity of the liquid storage tank 101.

[0027] To avoid excessive air pressure inside the insulation box 4, please refer to... Figure 3 The ventilation component 5 includes a ventilation pipe 51. The upper part of the outer surface of the ventilation pipe 51 has several ventilation holes 52 arranged in a ring array to communicate with the outside. This allows the high-pressure gas inside the heat insulation box 4 to be discharged to the outside through the ventilation holes 52 along the inner cavity of the ventilation pipe 51. A dust cover 53 is fixedly connected to the upper part of the outer surface of the ventilation pipe 51 to prevent dust from the outside from entering the inner cavity of the heat insulation box 4 through the inner cavity of the ventilation pipe 51.

[0028] To facilitate the transport of hot air within the insulation box 4, please refer to... Figure 3 The exhaust assembly 8 includes an exhaust housing 81. Several exhaust pipes 82 are fixedly connected at intervals on the right end of the outer surface of the exhaust housing 81. Solenoid valves 83 are installed and fixed inside the cavity of each of the exhaust pipes 82.

[0029] When the temperature inside the heat insulation box 4 reaches the required temperature, the motor 74 is turned on, causing the fan blades 73 to rotate and blow the gas inside the heat insulation box 4. At the same time, several solenoid valves 83 are opened, allowing the high-temperature gas to be discharged into the equipment to be used through several exhaust pipes 82.

[0030] To achieve the goal of expelling the hot air from the inner cavity of the insulation box 4 to the outside, please refer to... Figure 4 The air supply mechanism 7 includes a mounting frame 71. A rotating shaft 72 is rotatably connected to the middle of the inner cavity of the mounting frame 71, which can blow the high-temperature gas inside the heat insulation box 4. A fan blade 73 is fixedly connected to the middle of the outer surface of the rotating shaft 72. A motor 74 is fixedly installed at the middle of the left end of the outer surface of the mounting frame 71, and the right output end of the motor 74 is fixedly connected to the left end of the outer surface of the rotating shaft 72.

[0031] It should be noted that the temperature sensor 9 in this utility model is model MKD090B-058-KO1-KN, the liquid level sensor 11 is model GF80, the motor 74 is model yzs132s2-2, and the solenoid valve 83 is model 2P025-06. The specific installation methods, circuit connection methods, and control methods of the temperature sensor 9, liquid level sensor 11, motor 74, and solenoid valve 83 are all conventional designs, and will not be described in detail in this utility model.

[0032] The working principle of this utility model is as follows: The steam or steam-water mixture discharged from the deaerator 2 is discharged into the inner cavity of the heat insulation box 4 along the inner cavity of the gas delivery pipe 3. At this time, the heat contained in the steam entering the upper part of the inner cavity of the heat insulation box 4 will be fully absorbed by the baffle heat conduction plate 61. At the same time, the condensed water droplets will flow down from top to bottom along the upper surface of the baffle heat conduction plate 61 through several drainage channels 62 until the water droplets are discharged into the inner cavity of the liquid storage tank 101 along the water delivery frame 102. When the water in the inner cavity of the liquid storage tank 101 accumulates to a certain amount, the water level in the inner cavity of the liquid storage tank 101 can be monitored by the liquid level sensor 11. Then, the water can be discharged to the outside through the drain pipe 103. After the temperature sensor 9 detects that the gas in the inner cavity of the heat insulation box 4 has reached the required temperature, the drive motor 74 drives the rotating shaft 72 and the fan blade 73 to start rotating. At the same time, several solenoid valves 83 are opened, so that the high temperature gas in the inner cavity of the heat insulation box 4 can be discharged into the equipment to be used through several exhaust pipes 82.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A deaerator waste heat recovery device comprising a casing (1) and a deaerator (2), characterized in that: The box (1) outer surface upper end right part is fixedly connected with the gas pipe (3), and the gas pipe (3) left part input end is fixedly connected with the oxygen remover (2) right part output end, the box (1) inner chamber upper part is fixedly connected with the heat insulation box (4), the heat insulation box (4) outer surface upper end left part front side is fixedly connected with the ventilation component (5), the heat insulation box (4) inner chamber is fixedly connected with the heat conduction mechanism (6), the heat insulation box (4) outer surface right end lower part is fixedly connected with the exhaust component (8), the heat insulation box (4) inner chamber right wall upper part is fixedly installed with temperature sensor (9), the heat insulation box (4) outer surface left end middle part is fixedly connected with the air supply mechanism (7), the box (1) inner chamber lower part is fixedly connected with the liquid storage mechanism (10), the liquid storage mechanism (10) inside left side upper part is fixedly installed with liquid level sensor (11).

2. A device for recovering waste heat from an oxygenator according to claim 1, characterized in that: The heat conduction mechanism (6) includes the baffle heat conduction plate (61), the baffle heat conduction plate (61) left part and right part are alternately provided with a plurality of drainage grooves (62) communicated with the outside.

3. The device according to claim 1, characterized in that: The liquid storage mechanism (10) includes the liquid storage tank (101), the liquid storage tank (101) outer surface upper end right part is fixedly connected with the water delivery frame (102), the liquid storage tank (101) outer surface right end lower part is fixedly connected with the drain pipe (103).

4. The device according to claim 1, characterized in that: The ventilation component (5) includes the ventilation pipe (51), the ventilation pipe (51) outer surface upper part annular array is provided with a plurality of ventilation holes (52) communicated with the outside, the ventilation pipe (51) outer surface upper end is fixedly connected with the dust cover (53).

5. The device according to claim 1, characterized in that: The exhaust component (8) includes the exhaust sleeve shell (81), the exhaust sleeve shell (81) outer surface right end is fixedly connected with a plurality of exhaust pipes (82) distributed at intervals, a plurality of exhaust pipes (82) inner cavities are fixedly installed with electromagnetic valve (83).

6. The device according to claim 1, characterized in that: The air supply mechanism (7) includes the mounting frame (71), the mounting frame (71) inner cavity middle part is rotatably connected with the rotating shaft (72), the rotating shaft (72) outer surface middle part is fixedly connected with the fan blade (73), the mounting frame (71) outer surface left end middle part is fixedly installed with motor (74), and the motor (74) right part output end is fixedly connected with the rotating shaft (72) outer surface left end.

Images