Dead steam recovery device of boiler deaerator

Abstract

The utility model relates to a dead steam recovery device of a boiler deaerator, and belongs to the technical field of dead steam recovery. Comprising a steam-water separator box body and a two-section recovery box body which are both of a closed structure, and one side of the top surface of the steam-water separator box body is connected with the bottom of the two-section recovery box body; the lower end of the hydraulic jet pump is connected with the upper end of the dead steam cooling box; the spiral nozzle is mounted in the middle of the second-section recycling box body; two ends of the demineralized water inlet are respectively connected with a water outlet of the deoxygenization feed pump and a water inlet of the hydraulic jet pump; two ends of the steam inlet are respectively connected with a steam exhaust port of the deaerator and the upper part of the dead steam cooling box; the vent nozzle is formed in the upper end of the second-section recovery box body; and the overflow hole is connected with the bottom of one side of the steam-water separator box According to the utility model, the cyclic utilization of heat and demineralized water is realized, and the waste of water resources and the loss of heat are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust steam recovery, in particular to an exhaust steam recovery device for a boiler deaerator. Background Art

[0002] Before the desalted water enters the boiler, it is first pressurized by the deaerator feed water pump and sent to the heat pipe feed water preheating device. After the water temperature is raised to 60℃~70℃, it enters the deaerator. The hot water in the deaerator will produce some exhaust steam. At present, this part of the exhaust steam is directly released from the upper exhaust port of the deaerator, which will cause water resource waste and heat loss.

[0003] To this end, the utility model provides a waste steam recovery device for a boiler deaerator, so as to recover the heat in the waste steam of the deaerator, thereby reducing water resource waste and heat loss. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a waste steam recovery device for a boiler deaerator.

[0005] The technical solution of the utility model is as follows:

[0006] A waste steam recovery device for a boiler deaerator, comprising a steam-water separator housing, a waste steam cooling box, a hydraulic jet pump, a second-stage recovery housing, a stainless steel wire mesh assembly, a heat absorption assembly, a spiral nozzle, a desalted water inlet, a steam inlet, a vent, an overflow hole and a spray port, wherein the steam-water separator housing and the second-stage recovery housing are both closed structures, and one side of the top surface of the steam-water separator housing is connected to the bottom of the second-stage recovery housing; the waste steam cooling box is connected to the upper end of the steam-water separator housing and extends to the inner bottom of the steam-water separator housing, and the lower end of the hydraulic jet pump is connected to the upper end of the waste steam cooling box; the spiral nozzle is installed in the middle of the second-stage recovery housing and is connected to the water outlet of the deaerator feed water pump through the spray port; the two ends of the desalted water inlet are respectively connected to the outlet of the deaerator feed water pump The water inlet is connected to the water inlet of the hydraulic jet pump; the two ends of the steam inlet are respectively connected to the exhaust port of the deaerator and the upper part of the exhaust steam cooling box; the vent is opened at the upper end of the second-stage recovery box; the overflow hole is connected to the bottom of one side of the steam-water separator box and the overflow hole is connected to the water inlet of the desalted water tank; the stainless steel wire mesh assembly includes a first stainless steel wire mesh and a second stainless steel wire mesh, the first stainless steel wire mesh is installed on the upper part of the steam-water separator box and is located above the outlet of the exhaust steam cooling box, and the second stainless steel wire mesh is installed on the upper part of the second-stage recovery box and is located above the spiral nozzle; the heat absorption assembly includes a first heat absorption layer and a second heat absorption layer, the first heat absorption layer is placed on the first stainless steel wire mesh, and the second heat absorption layer is placed on the second stainless steel wire mesh.

[0007] Optionally, the first stainless steel wire mesh and the second stainless steel wire mesh are respectively located at one-third of the upper part of the steam-water separator box and the second-stage recovery box.

[0008] Optionally, the exhaust steam recovery device of the boiler deaerator further includes a sewage outlet, and the sewage outlet is connected to the bottom of the other side of the steam-water separator box.

[0009] Optionally, the material of the first heat absorption layer and the second heat absorption layer is one or a combination of aluminum oxide balls or pebbles.

[0010] Optionally, a manual valve is connected to the upper end of the vent.

[0011] Optionally, a U-shaped water seal is connected to the pipe between the overflow hole and the water inlet of the desalted water tank.

[0012] All the above optional technical solutions can be combined arbitrarily, and the present utility model does not provide detailed descriptions of the structures after the combinations.

[0013] By means of the above scheme, the beneficial effects of the utility model are as follows:

[0014] The desalted water entering the desalted water inlet through the deaeration feed water pump is sprayed by the hydraulic jet pump and then enters the exhaust steam cooling box from the steam inlet with the exhaust steam from the boiler deaerator. The exhaust steam enters the steam-water separator box after cooling in the exhaust steam cooling box. The desalted water carried in the exhaust steam condenses and falls to the bottom of the steam-water separator box. The exhaust steam that enters the steam-water separator box without timely cooling is partially absorbed by the first heat absorption layer above the first stainless steel wire mesh. The remaining exhaust steam rises to the second-stage recovery box and continues to be cooled and absorbed by the desalted water sprayed by the spiral nozzle. The remaining non-condensable gas is partially absorbed by the second heat absorption layer above the second stainless steel wire mesh and then discharged through the vent. Since the exhaust steam condensate absorbs the heat in the exhaust steam, when the exhaust steam condensate returns to the desalted water tank for further recycling, it continues to be pumped from the desalted water tank into the deaerator, so that this part of the heat returns to the deaerator, and then continues to enter the boiler, realizing the recycling of heat and desalted water, avoiding the waste of water resources and the loss of heat.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model.

[0017] Figure 2 yes Figure 1 Top view of the .

[0018] Figure 3 It is a schematic diagram of the connection relationship when the utility model is used.

[0019] In the figure: 1-steam-water separator box; 2-exhaust steam cooling box; 3-hydraulic jet pump; 4-second stage recovery box; 5.1-first stainless steel wire mesh; 5.2-second stainless steel wire mesh; 6.1-first heat absorption layer; 6.2-second heat absorption layer; 7-spiral nozzle; A1-desalt water inlet; A2-steam inlet; B1-vent; B2-overflow hole; B3-spray port; B4-drainage port; 8-deoxygenation feed water pump; 9-deaerator; 10-desalt water tank. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figures 1 to 3 As shown, the utility model provides a waste steam recovery device for a boiler deaerator, which includes a steam-water separator box 1, a waste steam cooling box 2, a hydraulic jet pump 3, a second-stage recovery box 4, a stainless steel wire mesh component, a heat absorption component, a spiral nozzle 7, a desalted water inlet A1, a steam inlet A2, a venting port B1, an overflow hole B2 and a spray port B3. The steam-water separator box 1 and the second-stage recovery box 4 are both closed structures, and one side of the top surface of the steam-water separator box 1 is connected to the bottom of the second-stage recovery box 4; the waste steam cooling box 2 is connected to the upper end of the steam-water separator box 1 and extends to the bottom of the steam-water separator box 1, and the lower end of the hydraulic jet pump 3 is connected to the upper end of the waste steam cooling box 2; the spiral nozzle 7 is installed in the middle of the second-stage recovery box 4 and the spiral nozzle 7 is connected to the outlet of the deoxygenation feed water pump 8 through the spray port B3; the two ends of the desalted water inlet A1 are respectively connected to the outlet and The water inlet of the hydraulic jet pump 3 is connected; the two ends of the steam inlet A2 are respectively connected to the exhaust port of the deaerator 9 and the upper part of the exhaust steam cooling box 2; the vent B1 is opened at the upper end of the second-stage recovery box 4; the overflow hole B2 is connected to the bottom of one side of the steam-water separator box 1 and the overflow hole B2 is connected to the water inlet of the desalted water tank 10; the stainless steel wire mesh component includes a first stainless steel wire mesh 5.1 and a second stainless steel wire mesh 5.2, the first stainless steel wire mesh 5.1 is installed on the upper part of the steam-water separator box 1 and is located above the outlet of the exhaust steam cooling box 2, and the second stainless steel wire mesh 5.2 is installed on the upper part of the second-stage recovery box 4 and is located above the spiral nozzle 7; the heat absorption component includes a first heat absorption layer 6.1 and a second heat absorption layer 6.2, the first heat absorption layer 6.1 is placed on the first stainless steel wire mesh 5.1, and the second heat absorption layer 6.2 is placed on the second stainless steel wire mesh 5.2.

[0022] When the utility model is in use, the desalted water entering the desalted water inlet A1 through the deoxygenation water pump 8 is sprayed by the hydraulic jet pump 3 and then enters the exhaust steam cooling box 2 with the exhaust steam from the boiler deaerator 9 through the steam inlet A2. The exhaust steam is cooled in the exhaust steam cooling box 2 under the action of the desalted water and then enters the steam-water separator box 1. The desalted water carried in the exhaust steam condenses and falls to the bottom of the steam-water separator box 1. The exhaust steam that has not been cooled in time and enters the steam-water separator box 1 is partially absorbed by the first heat absorption layer 6.1 above the first stainless steel wire mesh 5.1. The remaining exhaust steam rises to the second-stage recovery box 4 and continues to be cooled and absorbed by the desalted water sprayed by the spiral nozzle 7. The remaining non-condensable gas is partially absorbed by the second heat absorption layer 6.2 above the second stainless steel wire mesh 5.2 and then discharged through the vent B1. Since the exhaust steam condensate absorbs the heat in the exhaust steam, when the exhaust steam condensate returns to the desalted water tank 10 for continued recycling, it continues to be pumped from the desalted water tank 10 into the deaerator 9, so that this part of the heat returns to the deaerator 9, and then continues to enter the boiler, realizing the recycling of heat and desalted water, and avoiding the waste of water resources and heat loss.

[0023] In a specific embodiment, the first stainless steel wire mesh 5.1 and the second stainless steel wire mesh 5.2 are respectively located at one third of the upper part of the steam-water separator housing 1 and the second-stage recovery housing 4.

[0024] In a specific embodiment, the exhaust steam recovery device of the boiler deaerator further includes a drain port B4, which is connected to the bottom of the other side of the steam-water separator housing 1. After long-term use of the utility model, the dirt accumulated in the steam-water separator housing 1 can be discharged through the drain port B4.

[0025] In a specific embodiment, the materials of the first heat absorption layer 6.1 and the second heat absorption layer 6.2 are aluminum oxide balls or pebbles, or a combination of the two.

[0026] In a specific embodiment, a manual valve is connected to the upper end of the vent B1. By providing the manual valve, it is convenient to manually control the venting of the remaining non-condensable gas.

[0027] In a specific embodiment, a U-shaped water seal is connected to the pipe between the overflow hole B2 and the water inlet of the desalted water tank 10. By providing the U-shaped water seal, part of the gas can be prevented from entering the desalted water tank 10 when the cooled desalted water is transported to the desalted water tank 10.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A waste steam recovery device for a boiler deaerator, characterized in that: The invention comprises a steam-water separator housing (1), an exhaust steam cooling housing (2), a hydraulic jet pump (3), a second-stage recovery housing (4), a stainless steel wire mesh assembly, a heat absorption assembly, a spiral nozzle (7), a desalted water inlet (A1), a steam inlet (A2), a venting port (B1), an overflow hole (B2) and a spray port (B3); the steam-water separator housing (1) and the second-stage recovery housing (4) are both closed structures, and one side of the top surface of the steam-water separator housing (1) is connected to the bottom of the second-stage recovery housing (4); The exhaust steam cooling box (2) is connected to the upper end of the steam-water separator box (1) and extends to the bottom of the steam-water separator box (1); the lower end of the hydraulic jet pump (3) is connected to the upper end of the exhaust steam cooling box (2); the spiral nozzle (7) is installed in the middle of the second-stage recovery box (4) and the spiral nozzle (7) is connected to the outlet of the deoxygenation water supply pump (8) through the spray port (B3); the two ends of the desalted water inlet (A1) are respectively connected to the outlet of the deoxygenation water supply pump (8) and the inlet of the hydraulic jet pump (3). The steam inlet (A2) is connected to the steam outlet of the deaerator (9) and the upper part of the exhaust steam cooling box (2) respectively; the venting port (B1) is opened at the upper end of the second-stage recovery box (4); the overflow hole (B2) is connected to the bottom of one side of the steam-water separator box (1) and the overflow hole (B2) is connected to the water inlet of the desalted water tank (10); the stainless steel wire mesh assembly includes a first stainless steel wire mesh (5.1) and a second stainless steel wire mesh (5.2), the first stainless steel The wire mesh (5.1) is installed on the upper part of the steam-water separator housing (1) and is located above the outlet of the exhaust steam cooling box (2); the second stainless steel wire mesh (5.2) is installed on the upper part of the second-stage recovery housing (4) and is located above the spiral nozzle (7); the heat absorption component comprises a first heat absorption layer (6.1) and a second heat absorption layer (6.2); the first heat absorption layer (6.1) is placed on the first stainless steel wire mesh (5.1), and the second heat absorption layer (6.2) is placed on the second stainless steel wire mesh (5.2).

2. The exhaust steam recovery device of the boiler deaerator according to claim 1, characterized in that: The first stainless steel wire mesh (5.1) and the second stainless steel wire mesh (5.2) are respectively located at one third of the upper portion of the steam-water separator housing (1) and the second-stage recovery housing (4).

3. The exhaust steam recovery device of the boiler deaerator according to claim 1, characterized in that: It also comprises a sewage outlet (B4), wherein the sewage outlet (B4) is connected to the bottom of the other side of the steam-water separator housing (1).

4. The exhaust steam recovery device of a boiler deaerator according to any one of claims 1 to 3, characterized in that: The materials of the first heat absorption layer (6.1) and the second heat absorption layer (6.2) are aluminum oxide balls or pebbles, or a combination of the two.

5. The exhaust steam recovery device of the boiler deaerator according to claim 1, characterized in that: The upper end of the vent (B1) is connected with a manual valve.

6. The exhaust steam recovery device of the boiler deaerator according to claim 1, characterized in that: A U-shaped water seal is connected to the pipeline between the overflow hole (B2) and the water inlet of the desalted water tank (10).

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