Steam pipeline waste heat recovery device

Abstract

The utility model discloses a steam pipeline waste heat recovery device which comprises a heat exchange box, a fixing frame is fixedly connected in the heat exchange box, a through hole and a fan-shaped opening are formed in the top of the fixing frame, and a first temperature sensor and a second temperature sensor are fixed in the heat exchange box. The spiral heat exchange pipe is arranged in the heat exchange box, the outer surface of the heat exchange box is connected with a water drainage pipe and a water inlet pipe in a penetrating mode, and the outer surface of the heat exchange box is fixedly connected with a controller. Water in the heat exchange box can be extracted through the arranged circulating pump and then sprayed out through the spraying disc, the sprayed water can make direct contact with steam, and therefore secondary heat exchange can be conducted, the structure is reasonable, the steam heat exchange effect can be improved, and the steam waste heat recovery rate is increased.

Description

Technical Field

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

[0002] Steam is also called "water vapor". According to pressure and temperature, various types of steam are classified into: saturated steam and superheated steam. The main uses of steam are heating and humidification, and it can also generate power and drive machines. When the boiler in the factory is operating, a lot of steam will be discharged. This steam contains a high amount of heat. In order to make full use of the heat of steam, a steam waste heat recovery device is generally used to assist in its recovery and utilization.

[0003] However, the existing steam waste heat recovery devices have certain drawbacks. Since the heat recovery of steam is carried out by adopting a heat exchange structure, and the waste heat recovery rate of the existing heat exchange mechanism is limited, resulting in poor waste heat recovery effect, thus having certain drawbacks, there is an urgent need for a steam pipeline waste heat recovery device to solve the above problems. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a steam pipeline waste heat recovery device, and the utility model is realized through the following technical solutions.

[0005] A steam pipeline waste heat recovery device comprises a heat exchange box, a fixing frame is fixedly connected to the inside of the heat exchange box, a through hole and a fan-shaped opening are opened on the top of the fixing frame, a first temperature sensor and a second temperature sensor are fixed to the inside of the heat exchange box, a drain pipe and a water inlet pipe are penetrated and connected to the outer surface of the heat exchange box, a controller is fixedly connected to the outer surface of the heat exchange box, a steam output pipe is penetrated and connected to the top of the heat exchange box, and also comprises a first waste heat recovery mechanism and a second waste heat recovery mechanism, the first waste heat recovery mechanism is used for preliminary heat exchange of steam, and the second waste heat recovery mechanism is used for secondary heat exchange of steam.

[0006] Furthermore, the first waste heat recovery mechanism comprises a spiral heat exchange tube, both ends of which are respectively penetrated and connected with a first diverter plate and a second diverter plate, and the spiral heat exchange tube is a plurality of tubes distributed in an annular shape.

[0007] Furthermore, the steam input pipe passing through the bottom of the first diverter plate is connected to the heat exchange box, the top of the second diverter plate is connected to an outlet pipe, and the outlet pipe is connected to the fixed frame through a through hole, and one end of the outlet pipe is fixedly connected to a guide cover.

[0008] Furthermore, the second waste heat recovery mechanism includes a circulation pump, which is fixedly connected to the outer surface of the heat exchanger box, the input end of the circulation pump is fixedly connected to a first water pipe, and the first water pipe is connected through the heat exchanger box, the output end of the circulation pump is fixedly connected to a second water pipe, and one end of the second water pipe extending to the inside of the heat exchanger box is fixedly connected to a spray plate, and the spray plate is located directly above the guide cover.

[0009] Furthermore, the drain pipe and the water inlet pipe are both located below the fixing frame, and one end of the drain pipe and the water inlet pipe are both provided with a control valve.

[0010] Furthermore, the second temperature sensor is located above the fixing frame, and the first temperature sensor is located below the fixing frame.

[0011] Furthermore, a water level window is provided on the outer surface of the heat exchange box.

[0012] The beneficial effect of the utility model is that during the operation of the device, steam is input through the steam input pipe, and the input steam is transported through a number of spiral heat exchange tubes. During the transportation process, the water inside the heat exchange box can perform preliminary heat exchange on the steam transported by the spiral heat exchange tubes. The steam after heat exchange is output through the exhaust pipe, and then the water inside the heat exchange box can be extracted by the arranged circulation pump and then sprayed out through the spray plate. The sprayed water can directly contact the steam, thereby performing secondary heat exchange. The structure is reasonable, and can improve the effect of steam heat exchange, thereby improving the steam waste heat recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 : A schematic structural diagram of a steam pipeline waste heat recovery device according to the utility model;

[0015] Figure 2 : The internal schematic diagram of the heat exchange box of the utility model;

[0016] Figure 3 : A top view of a fixing frame of the utility model.

[0017] The reference numerals are as follows:

[0018] 1. Heat exchange box; 11. Water level window; 12. Steam output pipe; 13. First temperature sensor; 14. Second temperature sensor; 15. Drain pipe; 16. Water inlet pipe;

[0019] 2. Controller;

[0020] 3. spiral heat exchange tube; 31. first diverter plate; 311. steam input pipe; 32. second diverter plate; 321. air outlet pipe; 322. guide cover;

[0021] 4. Fixed frame; 41. Through hole; 42. Fan-shaped opening;

[0022] 5. Circulation pump; 51. First water pipe; 52. Second water pipe; 521. Spray plate. DETAILED DESCRIPTION

[0023] 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 of 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.

[0024] like Figure 1-3 As shown, the utility model has the following specific embodiments.

[0025] Example:

[0026] A steam pipeline waste heat recovery device includes a heat exchange box 1, a fixing frame 4 is fixedly connected to the inside of the heat exchange box 1, a through hole 41 and a fan-shaped opening 42 are opened on the top of the fixing frame 4, a first temperature sensor 13 and a second temperature sensor 14 are fixed to the inside of the heat exchange box 1, a drain pipe 15 and a water inlet pipe 16 are penetrated and connected to the outer surface of the heat exchange box 1, a controller 2 is fixedly connected to the outer surface of the heat exchange box 1, a steam output pipe 12 is penetrated and connected to the top of the heat exchange box 1, and also includes a first waste heat recovery mechanism and a second waste heat recovery mechanism, the first waste heat recovery mechanism is used for preliminary heat exchange of steam, and the second waste heat recovery mechanism is used for secondary heat exchange of steam.

[0027] By adopting the above technical solution, when using the device, first, steam is input through the steam input pipe 311, and the input steam is transported through a number of spiral heat exchange tubes 3. During the transportation process, the water inside the heat exchange box 1 can perform preliminary heat exchange on the steam transported by the spiral heat exchange tubes 3. The steam after heat exchange is output through the outlet pipe 321, and then, the water inside the heat exchange box 1 can be extracted by the provided circulation pump 5, and then sprayed out through the spray plate 521. The sprayed water can directly contact the steam, thereby performing secondary heat exchange. The structure is reasonable, and the effect of steam heat exchange can be improved, thereby improving the steam waste heat recovery rate.

[0028] Specifically, the first waste heat recovery mechanism includes a spiral heat exchange tube 3, both ends of which are respectively connected with a first flow divider plate 31 and a second flow divider plate 32, and the spiral heat exchange tube 3 is a plurality of spiral heat exchange tubes 3 distributed in an annular manner;

[0029] The steam input pipe 311 passing through the bottom of the first diverter plate 31 is connected to the heat exchange box 1, and the top of the second diverter plate 32 is connected to the outlet pipe 321, and the outlet pipe 321 is connected to the fixing frame 4 through the through hole 41, and one end of the outlet pipe 321 is fixedly connected to the guide cover 322.

[0030] By adopting the above technical solution, the first waste heat recovery mechanism can perform preliminary heat exchange treatment on the steam, that is, the steam is input into the first diverter plate 31 through the steam input pipe 311, and the first diverter plate 31 is input into the second diverter plate 32 through a plurality of spiral heat exchange tubes 3. When the steam passes through the spiral heat exchange tubes 3, the water injected into the heat exchange box 1 can exchange heat with the steam passing through the spiral heat exchange tubes 3, and the steam after heat exchange is output through the exhaust pipe 321, so as to facilitate secondary heat exchange of the steam after heat exchange.

[0031] Specifically, the second waste heat recovery mechanism includes a circulating pump 5, which is fixedly connected to the outer surface of the heat exchange box 1. The input end of the circulating pump 5 is fixedly connected to the first water pipe 51, and the first water pipe 51 is connected through the heat exchange box 1. The output end of the circulating pump 5 is fixedly connected to the second water pipe 52, and one end of the second water pipe 52 extending to the inside of the heat exchange box 1 is fixedly connected to the spray plate 521, and the spray plate 521 is located directly above the guide cover 322.

[0032] By adopting the above technical solution, the second waste heat recovery mechanism can perform secondary heat absorption on the steam after heat absorption, that is, the circulating pump 5 set can extract water inside the heat exchange box 1 through the first water pipe 51, and then input it into the spray plate 521 through the second water pipe 52 for spraying out. The sprayed water can contact with the steam after heat exchange, so that it can absorb heat for the second time.

[0033] Specifically, the drain pipe 15 and the water inlet pipe 16 are both located below the fixing frame 4 , and one end of the drain pipe 15 and the water inlet pipe 16 are both provided with a control valve.

[0034] By adopting the above technical solution, the water inlet pipe 16 can inject water for absorbing heat into the heat exchange box 1, and the drain pipe 15 can discharge the hot water after absorbing heat for use, wherein the valves on the drain pipe 15 and the water inlet pipe 16 can control their closure.

[0035] Specifically, the second temperature sensor 14 is located above the fixing frame 4 , and the first temperature sensor 13 is located below the fixing frame 4 .

[0036] By adopting the above technical solution, the second temperature sensor 14 can detect the temperature above the fixing frame 4, and the first temperature sensor 13 can detect the temperature below the fixing frame 4, that is, detect the temperature of the heat-absorbing water inside the heat exchange box 1.

[0037] Specifically, a water level window 11 is provided on the outer surface of the heat exchange box 1 .

[0038] By adopting the above technical solution, the provided water level window 11 can facilitate observation of the water level injected into the heat exchange box 1 .

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A steam pipeline waste heat recovery device, comprising a heat exchange box (1), characterized in that: The interior of the heat exchange box (1) is fixedly connected to a fixing frame (4), the top of the fixing frame (4) is provided with a through hole (41) and a fan-shaped opening (42), the interior of the heat exchange box (1) is fixedly connected to a first temperature sensor (13) and a second temperature sensor (14), the outer surface of the heat exchange box (1) is connected to a drain pipe (15) and a water inlet pipe (16), the outer surface of the heat exchange box (1) is fixedly connected to a controller (2), the top of the heat exchange box (1) is connected to a steam output pipe (12), and the heat exchange box (1) further comprises a first waste heat recovery mechanism and a second waste heat recovery mechanism, the first waste heat recovery mechanism is used for preliminary heat exchange of steam, and the second waste heat recovery mechanism is used for secondary heat exchange of steam.

2. A steam pipeline waste heat recovery device according to claim 1, characterized in that: The first waste heat recovery mechanism comprises a spiral heat exchange tube (3), the two ends of the spiral heat exchange tube (3) are respectively connected to a first flow distribution plate (31) and a second flow distribution plate (32), and the spiral heat exchange tube (3) is a plurality of tubes distributed in an annular shape.

3. A steam pipeline waste heat recovery device according to claim 2, characterized in that: A steam input pipe (311) passing through the bottom of the first diverter plate (31) is connected to the heat exchange box (1); an air outlet pipe (321) is connected to the top of the second diverter plate (32); the air outlet pipe (321) is connected to the fixing frame (4) through a through hole (41); and one end of the air outlet pipe (321) is fixedly connected to a guide cover (322).

4. The steam pipeline waste heat recovery device according to claim 1, characterized in that: The second waste heat recovery mechanism comprises a circulation pump (5), the circulation pump (5) being fixedly connected to the outer surface of the heat exchange box (1), the input end of the circulation pump (5) being fixedly connected to a first water pipe (51), and the first water pipe (51) and the heat exchange box (1) being connected through, the output end of the circulation pump (5) being fixedly connected to a second water pipe (52), one end of the second water pipe (52) extending to the interior of the heat exchange box (1) being fixedly connected to a spray plate (521), and the spray plate (521) being located directly above the guide cover (322).

5. The steam pipeline waste heat recovery device according to claim 1, characterized in that: The drainage pipe (15) and the water inlet pipe (16) are both located below the fixing frame (4), and one end of each of the drainage pipe (15) and the water inlet pipe (16) is provided with a control valve.

6. The steam pipeline waste heat recovery device according to claim 1, characterized in that: The second temperature sensor (14) is located above the fixing frame (4), and the first temperature sensor (13) is located below the fixing frame (4).

7. The steam pipeline waste heat recovery device according to claim 1, characterized in that: The outer surface of the heat exchange box (1) is provided with a water level window (11).

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