CN210662331U - Low-loss steam and water recovery system - Google Patents

Low-loss steam and water recovery system Download PDF

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Publication number
CN210662331U
CN210662331U CN201921618257.8U CN201921618257U CN210662331U CN 210662331 U CN210662331 U CN 210662331U CN 201921618257 U CN201921618257 U CN 201921618257U CN 210662331 U CN210662331 U CN 210662331U
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China
Prior art keywords
water
boiler
flash tank
trap
heat
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CN201921618257.8U
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Chinese (zh)
Inventor
李志海
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Shijiazhuang Yiguang Paper Co Ltd
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Shijiazhuang Yiguang Paper Co Ltd
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Abstract

The utility model discloses a low-loss steam and water recovery system, including boiler, heat exchanger, water pump and flash tank, the boiler is connected to heat exchanger through the connecting pipe, and heat exchanger's the other end is connected with first trap, and first trap is connected to the flash tank, and the one end of flash tank is connected to the dryer through the connecting pipe, and the other end of flash tank is connected with the heat pump, and the other end of heat pump is connected to the boiler, and the other end of dryer is connected to the second trap, and the other end of second trap is connected to the soft pond, and the other end in soft pond is connected. The utility model can supply the generated flash steam into the drying cylinder through the second section of the connecting pipe through the arranged flash tank, thereby fully utilizing the heat and reducing the loss of the heat; the hot water separated by the flash tank can be conveyed into the boiler again through the arranged heat pump, so that the energy is saved and the environment is protected.

Description

Low-loss steam and water recovery system
Technical Field
The utility model belongs to the technical field of the boiler, specifically low-loss vapour and water recovery system.
Background
The traditional steam supply system has the flow and principle that: one part of superheated steam used for drying of the coating machine passes through the heat exchanger, heated hot air respectively enters the four paper sheet drying boxes, the heat exchanger generates condensed water (steam and water mixture) which is subjected to steam and water separation through the drain valve, the condensed water is discharged to the water storage tank of the boiler for recycling, the other part of superheated steam is directly introduced into the drying cylinder drying system, and the design has the great defect that high-pressure condensed water (2-3kg/cm2) is discharged into the normal-pressure water storage tank through the drain valve and then is rapidly gasified, heat and pressure are released, a large amount of water steam is generated, and double losses of heat and softened water are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low-loss vapour and water recovery system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
low-loss steam and water recovery system, including boiler, heat exchanger, water pump and flash tank, the boiler passes through the connecting pipe and is connected to heat exchanger, and heat exchanger's the other end is connected with first trap, and first trap is connected to the flash tank, and the one end of flash tank is connected to the dryer through the connecting pipe, and the other end of flash tank is connected with the heat pump, and the other end of heat pump is connected to the boiler, and the other end of dryer is connected to the second trap, and the other end of second trap is connected to the softened water pond, and the other end of softened.
As a further aspect of the present invention: the other end of the water pump is connected to the boiler.
As a further aspect of the present invention: and a first liquid level automatic controller is arranged at a certain set water level below the interior of the boiler.
As a further aspect of the present invention: and a second liquid level automatic controller is arranged at a certain other set water level above the interior of the boiler.
As a further aspect of the present invention: the water pump is respectively electrically connected with the first liquid level automatic controller and the second liquid level automatic controller through wires and is controlled through the PLC.
Compared with the prior art, the utility model can supply the generated flash steam into the drying cylinder through the second section of the connecting pipe through the arranged flash tank, thereby fully utilizing the heat and reducing the loss of the heat; the hot water separated by the flash tank can be conveyed into the boiler again through the arranged heat pump, so that the energy is saved and the environment is protected.
Drawings
Fig. 1 is a schematic diagram of a low loss steam and water recovery system of the prior art.
Fig. 2 is a schematic diagram of an improved low-loss steam and water recovery system.
In the figure: 1. a boiler; 2. a heat exchanger; 3. a first trap; 4. a drying cylinder; 5. a second trap; 6. softening the water tank; 7. a water pump; 8. a flash tank; 9. a heat pump.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-2, the low loss steam and water recovery system includes a boiler 1, a heat exchanger 2, a water pump 7 and a flash tank 8; the boiler 1 is connected to a heat exchanger 2 through a connecting pipe, the other end of the heat exchanger 2 is connected with a first drain valve 3, the first drain valve 3 is connected to a flash tank 8, gas-liquid separation can be carried out on tail gas subjected to heat exchange through the heat exchanger 2 by arranging the flash tank 8, one end of the flash tank 8 is connected to a drying cylinder 4 through a connecting pipe, the other end of the flash tank 8 is connected with a heat pump 9, the other end of the heat pump 9 is connected to the boiler 1, heat separated out by the flash tank 8 can be conveyed into the boiler 1 again by arranging the heat pump 9, waste heat discharged by the boiler 1 is fully utilized, the other end of the drying cylinder 4 is connected to a second drain valve 5, the other end of the second drain valve 5 is connected to a softened water tank 6, the other end of the softened water tank 6 is connected with a water pump, a second liquid level automatic controller is installed at a certain other set water level above the interior of the boiler 1, and the water pump 7 is respectively electrically connected with the first liquid level automatic controller and the second liquid level automatic controller through wires and is controlled through a PLC controller.
In the use process of the utility model, the boiler 1 carries out heat exchange on the generated steam through the heat exchanger 2, the condensate water generated after the heat exchange of the steam is subjected to steam-water separation through the first steam trap 3 and enters the flash tank 8, the flash steam generated in the flash tank 8 enters the drying cylinder 4 through the second section of steam supply of the connecting pipe, thereby fully utilizing the heat, reducing the heat loss, leading the condensed water to be conveyed into the softened water tank 6 for the boiler 1 to use under the action of the second drain valve 5, when the water level in the boiler 1 is lower than a certain water level, the first liquid level automatic controller senses the water level and transmits a signal to the water pump 7, the water pump 7 conveys the water in the softened water tank 6 into the boiler 1, when the water level in the boiler 1 reaches some other water level, the second level automatic controller sends a signal to the water pump 7 to stop the water pump 7 and to deliver the hot water in the flash tank 8 to the boiler 1 by the action of the heat pump 9.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (5)

1. Low-loss steam and water recovery system, including boiler (1), heat exchanger (2), water pump (7) and flash tank (8), its characterized in that, boiler (1) is connected to heat exchanger (2) through the connecting pipe, the other end of heat exchanger (2) is connected with first trap (3), first trap (3) are connected to flash tank (8), the one end of flash tank (8) is connected to dryer (4) through the connecting pipe, the other end of flash tank (8) is connected with heat pump (9), the other end of heat pump (9) is connected to boiler (1), the other end of dryer (4) is connected to second trap (5), the other end of second trap (5) is connected to softened water pool (6), the other end of softened water pool (6) is connected with water pump (7).
2. The low loss steam and water recovery system according to claim 1, characterized in that the other end of the water pump (7) is connected to the boiler (1).
3. The low loss steam and water recovery system according to claim 1, characterized in that a first level automatic controller is installed at a certain set water level below the inside of the boiler (1).
4. The low loss steam and water recovery system according to claim 1, wherein a second level automatic controller is installed at some other set water level above the inside of the boiler (1).
5. The low-loss steam and water recovery system according to claim 1, wherein the water pump (7) is electrically connected with the first liquid level automatic controller and the second liquid level automatic controller through wires and controlled by a PLC controller.
CN201921618257.8U 2019-09-26 2019-09-26 Low-loss steam and water recovery system Active CN210662331U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921618257.8U CN210662331U (en) 2019-09-26 2019-09-26 Low-loss steam and water recovery system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921618257.8U CN210662331U (en) 2019-09-26 2019-09-26 Low-loss steam and water recovery system

Publications (1)

Publication Number Publication Date
CN210662331U true CN210662331U (en) 2020-06-02

Family

ID=70840325

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921618257.8U Active CN210662331U (en) 2019-09-26 2019-09-26 Low-loss steam and water recovery system

Country Status (1)

Country Link
CN (1) CN210662331U (en)

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