Boiler hot water recovery energy-saving device

Abstract

The utility model relates to the field of energy conservation and environmental protection, in particular to a boiler hot water recovery energy-saving device which comprises a first water storage tank and a boiler, the first water storage tank is communicated with the boiler through a water conveying pipe, a first valve is arranged on the water conveying pipe, the boiler is connected with a steam conveying pipe, and the steam conveying pipe is used for being connected with workshop equipment. The first water storage tank is connected with a condensate water recovery pipe which is used for being connected with workshop equipment. By arranging the condensate water recycling pipe, condensate water generated after water vapor is used is conveyed to the first water storage tank, water is continuously supplied to the boiler, water resources are saved, meanwhile, the recycled water has the high temperature, and energy consumption of the boiler can be reduced when the recycled water is supplied to the boiler for use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of energy saving and environmental protection, especially relates to a boiler hot water recovery energy saving device. BACKGROUND

[0002] The hot steam needs to be used in the production process of the pharmaceutical workshop, the water vapor is generated by heating water through the boiler, and is then delivered to each work station through a pipeline for use, and the condensed water generated after the use of the steam is directly discharged, causing water resource waste, and the condensed water still has a high temperature, directly affecting the production environment and causing energy waste.

[0003] Therefore, the present application needs to solve the technical problem of the direct discharge of the condensed water generated after the use of the hot steam in the production workshop, causing water resource waste, and the condensed water and steam mixture still having a high temperature, affecting the production environment and causing energy waste. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the technical problem of the direct discharge of the condensed water generated after the use of the hot steam in the production workshop, causing water resource waste, and the condensed water and steam mixture still having a high temperature, affecting the production environment and causing energy waste, and provides a boiler hot water recovery energy saving device.

[0005] The utility model provides a boiler hot water recovery energy saving device, including first water storage jar and boiler, first water storage jar with the boiler is through the water delivery pipe intercommunication, be equipped with the first valve on the water delivery pipe, the boiler is connected with steam delivery pipe, steam delivery pipe is used for connecting workshop equipment, first water storage jar is connected with condensed water recovery pipe, condensed water recovery pipe is used for connecting workshop equipment.

[0006] The utility model discloses a boiler hot water recovery energy saving device, when using, opens the first valve, and water enters the boiler through the water delivery pipe, and the boiler heats water through the combustion of natural gas, and the water vapor generated is sent to each equipment of the workshop through the steam delivery pipe, and the condensed water after use is returned to the first water storage jar through the condensed water recovery pipe, to continuously supply water for the boiler, save water resources, and the recovered water still has a high temperature, and the supply to the boiler can also reduce the energy consumption of the boiler.

[0007] Preferably, an oxygen removal pump is arranged between the first water storage jar and the boiler.

[0008] The oxygen removal pump can remove oxygen and impurities in water, reducing the corrosion of oxygen to the pipeline and equipment.

[0009] Preferably, the boiler is connected with a waste gas discharge pipe, and a cooling heat exchanger is arranged on the waste gas discharge pipe.

[0010] The exhaust gas generated by burning natural gas in the boiler is output through the exhaust gas discharge pipe and enters the cooling heat exchanger to exchange heat with cooling water, thereby reducing the temperature of the exhaust gas discharged, which on the one hand facilitates the subsequent treatment of the exhaust gas, and on the other hand avoids the production environment temperature from being greatly increased due to the exhaust gas.

[0011] Preferably, a second water storage tank is further included, the second water storage tank is communicated with the water inlet of the cooling heat exchanger through a cold water pipe, and the first water storage tank is communicated with the water outlet of the cooling heat exchanger through a hot water pipe.

[0012] The second water storage tank is arranged to continuously supply cold water to the cooling heat exchanger, and the heated hot water is introduced into the first water storage tank through the hot water pipe to supply the boiler, which on the one hand can maintain the high heat exchange capacity of the cooling heat exchanger, and on the other hand can provide hot water for the boiler to reduce the energy consumption of the boiler.

[0013] Preferably, a circulating pipe is connected to the hot water pipe, and the circulating pipe is communicated with the second water storage tank.

[0014] Since the steam is usually used to utilize the heat carried by the steam, the loss after use is not too large, and if the hot water is continuously injected into the first water storage tank through the hot water pipe, the first water storage tank will be burst, therefore, when the water level of the first water storage tank is sufficient, the hot water will flow back to the second water storage tank through the circulating pipe, and after being mixed with the cold water, the hot water will continue to enter the cooling heat exchanger through the cold water pipe to exchange heat with the exhaust gas, and the water forms a self-circulation between the second water storage tank and the cooling heat exchanger, which can increase the water temperature and further reduce the energy consumption of the boiler.

[0015] Preferably, a second valve is arranged on the hot water pipe, the second valve is arranged between the circulating pipe and the first water storage tank, and a third valve is arranged on the circulating pipe.

[0016] When the water level of the first water storage tank is low, the third valve is closed and the second valve is opened, so that the hot water enters the first water storage tank through the hot water pipe to supplement the water level of the first water storage tank, thereby maintaining the continuous water supply of the boiler, and when the water level of the first water storage tank is high, the second valve is closed and the third valve is opened, so that the water is self-circulated between the second water storage tank and the cooling heat exchanger to continuously increase the water temperature.

[0017] Preferably, a water adding pipe is connected to the second water storage tank, a fourth valve is arranged on the water adding pipe, and the water adding pipe is used to connect a water source.

[0018] After the fourth valve is opened, cold water can be supplemented to the second water storage tank through the water adding pipe to ensure the continuous water supply of the boiler.

[0019] Preferably, a PLC controller and a liquid level sensor are further included, the liquid level sensor is arranged on the first water storage tank, and the liquid level sensor, the second valve, the third valve and the fourth valve are electrically connected to the PLC controller.

[0020] When the liquid level sensor detects that the water level in the first water tank is reduced, the second valve and the fourth valve are controlled to be opened, and the third valve is controlled to be closed, hot water enters the first water tank through the hot water pipe, and cold water enters the second water tank through the water adding pipe, so as to supplement the water consumption and realize automatic control of boiler water supply.

[0021] Preferably, the surfaces of the hot water pipe, the cold water pipe, the first water tank, the second water tank, the water conveying pipe, the steam conveying pipe and the condensed water recovery pipe are covered with a heat preservation layer.

[0022] The heat preservation layer can weaken the heat exchange between steam and water and the environment during conveying and storage, reduce heat loss, and reduce the increase of the ambient temperature.

[0023] Preferably, the heat preservation layer is tin foil paper.

[0024] The tin foil paper has good heat insulation performance, and has good ductility, can be tightly wrapped on the surface of equipment or pipes, and has good heat preservation effect on water or steam.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] 1. The boiler hot water recovery energy-saving device provided by the present application can convey the condensed water generated after the use of water vapor to the first water tank through the condensed water recovery pipe, so as to continuously supply water to the boiler and save water resources.

[0027] 2. The boiler hot water recovery energy-saving device provided by the present application can avoid the problem that the cold water and water vapor with high temperature are directly discharged to cause the increase of the ambient temperature.

[0028] 3. The boiler hot water recovery energy-saving device provided by the present application can reduce the energy consumption of the boiler because the water in the first water tank has residual heat. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic view of the boiler hot water recovery energy-saving device of the present application in embodiment 1;

[0030] Figure 2 is a structural schematic view of the boiler hot water recovery energy-saving device of the present application in embodiment 2;

[0031] Figure 3 is a structural schematic view of the boiler hot water recovery energy-saving device of the present application in embodiment 3;

[0032] Markings in the drawing:

[0033] 1 - first water tank, 2 - boiler, 3 - water delivery pipe, 4 - first valve, 5 - steam delivery pipe, 6 - workshop equipment, 7 - condensate recovery pipe, 8 - deaerator pump, 9 - exhaust discharge pipe, 10 - cooling heat exchanger, 11 - second water tank, 12 - cold water pipe, 13 - hot water pipe, 14 - circulation pipe, 15 - second valve, 16 - third valve, 17 - water supply pipe, 18 - fourth valve, 19 - PLC controller, 20 - liquid level sensor. DETAILED DESCRIPTION

[0034] The utility model will be described in further detail below in combination with specific embodiments. However, this should not be understood as the scope of the above-mentioned subject matter of the utility model being limited to the following embodiments. Any technology realized based on the content of the utility model falls within the scope of the utility model.

[0035] In the description of the embodiments of the utility model, the terms indicating the orientation or positional relationship of "up", "down", "left", "right", "center", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product / equipment / device of the utility model when it is usually used. These terms of orientation or positional relationship are only used to facilitate the description of the utility model scheme or simplify the description in the embodiments, so as to enable the skilled person to quickly understand the scheme, and therefore cannot be understood as indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore cannot be understood as limiting the utility model.

[0036] In addition, if the terms "horizontal", "vertical", "suspended", "parallel", etc. appear, it does not mean that the corresponding device / component / element must be absolutely horizontal or vertical or suspended or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simply understood that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "suspended", "parallel", etc. and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the utility model.

[0037] In addition, the terms "first", "second", "third", etc. appearing in the terms are only used to distinguish the description of the same or similar parts, and should not be understood as emphasizing or implying the relative importance of a specific part.

[0038] Further, in the description of the embodiments of the utility model, "several" "a plurality of" "several" represents at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9 etc. Any situation, or even more than 9 cases.

[0039] Further, in the description of the technical scheme of the utility model, unless otherwise explicitly specified / limited / limited, the term "set" "installation" "connected" "connected" "provided with" "laid" "arranged" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, which can be welding, riveting, bolting, screwing and other commonly used connecting means in the art. The connection can be mechanical connection, electrical connection or communication connection, can be directly connected, or indirectly connected through an intermediate medium, can be the communication between two elements.

[0040] Embodiment 1

[0041] As shown in Figure 1 A boiler hot water recovery energy-saving device, comprising a first water storage tank 1 and a boiler 2, the first water storage tank 1 and the boiler 2 are communicated through the water pipe 3, the water pipe 3 is provided with a first valve 4, the first valve 4 and the boiler 2 are provided with a deaerator pump 8, the boiler 2 is connected with a steam delivery pipe 5, the steam delivery pipe 5 is used to connect the workshop equipment 6, the first water storage tank 1 is connected with a condensate recovery pipe 7, the condensate recovery pipe 7 is used to connect the workshop equipment 6.

[0042] In use, open the first valve 4, water enters the boiler 2 through the water pipe 3, the boiler 2 heats the water by burning natural gas, the water vapor generated is sent to each device in the workshop through the steam delivery pipe 5, and the used condensate is returned to the first water storage tank 1 through the condensate recovery pipe 7, which continuously supplies water to the boiler 2, saves water resources, and the recovered water also has a high temperature, which can reduce the energy consumption of the boiler 2 when supplied to the boiler 2.

[0043] Embodiment 2

[0044] As shown in Figure 2 In this embodiment, the difference from embodiment 1 is that the boiler 2 is connected with a waste gas discharge pipe 9, and the waste gas discharge pipe 9 is provided with a cooling heat exchanger 10.

[0045] In this embodiment, the waste gas generated by burning natural gas in the boiler 2 is output through the waste gas discharge pipe 9 and enters the cooling heat exchanger 10 to exchange heat with the cooling water, thereby reducing the temperature of the exhaust gas. On the one hand, it is convenient for subsequent treatment of the exhaust gas, and at the same time, it also avoids the production environment temperature from rising sharply due to the exhaust gas.

[0046] Further, the second water storage tank 11 is in communication with the water inlet of the cooling heat exchanger 10 through the cold water pipe 12, and the first water storage tank 1 is in communication with the water outlet of the cooling heat exchanger 10 through the hot water pipe 13. The second water storage tank 11 is arranged to continuously supply cold water to the cooling heat exchanger 10, and the heated hot water is introduced into the first water storage tank 1 through the hot water pipe 13 to supply the boiler 2, which can maintain the high heat exchange capacity of the cooling heat exchanger 10 and provide hot water for the boiler 2, thereby reducing the energy consumption of the boiler 2.

[0047] Further, the hot water pipe 13 is connected with the circulation pipe 14, which is in communication with the second water storage tank 11. Since the steam is usually used by taking advantage of the heat carried by the steam, the loss after use is not too large. If the hot water is continuously injected into the first water storage tank 1 through the hot water pipe 13, the first water storage tank 1 will be overfilled. Therefore, when the water level in the first water storage tank 1 is sufficient, the hot water will flow back to the second water storage tank 11 through the circulation pipe 13, mix with the cold water, and then enter the cooling heat exchanger 10 through the cold water pipe 12 to exchange heat with the exhaust gas. The water forms a self-circulation between the second water storage tank 11 and the cooling heat exchanger 10, which can increase the water temperature and further reduce the energy consumption of the boiler 2.

[0048] Further, the surfaces of the hot water pipe 12, the cold water pipe 13, the first water storage tank 1, the second water storage tank 11, the water delivery pipe 3, the steam delivery pipe 5, and the condensate recovery pipe 6 are covered with a thermal insulation layer. The thermal insulation layer can reduce the heat exchange between the steam and the water and the environment during transportation and storage, reduce heat loss, and reduce the increase of the ambient temperature. The thermal insulation layer can be made of tin foil, which has good heat insulation performance and good ductility, and can be tightly wrapped on the surface of the equipment or pipe to provide good thermal insulation effect for the water or steam.

[0049] Water flow control: The second valve 15 is arranged on the hot water pipe 12 and between the circulation pipe 14 and the first water storage tank 1. The third valve 16 is arranged on the circulation pipe 14. The second water storage tank 11 is connected with the water supply pipe 17, and the fourth valve 18 is arranged on the water supply pipe 17. When the water level in the first water storage tank 1 is low, the third valve 16 is closed, and the second valve 15 and the fourth valve 18 are opened, so that the hot water enters the first water storage tank 1 through the hot water pipe 13 to supplement the water in the first water storage tank 1 and maintain the continuous water supply of the boiler 2. When the water level in the first water storage tank 1 is high, the second valve 15 and the fourth valve 18 are closed, and the third valve 16 is opened, so that the water is self-circulated between the second water storage tank 11 and the cooling heat exchanger 10 to continuously increase the water temperature.

[0050] Example 3

[0051] As Figure 3As shown, in the embodiment, the difference from the embodiment 2 is that the PLC controller 19 and the liquid level sensor 20 are further included, the liquid level sensor 20 is arranged on the first water tank 1, and the liquid level sensor 20, the second valve 15, the third valve 16 and the fourth valve 18 are electrically connected with the PLC controller 19.

[0052] In the embodiment, when the liquid level sensor 20 detects that the water level in the first water tank 1 is reduced, the second valve 15 and the fourth valve 18 are controlled to be opened, and the third valve 16 is controlled to be closed, hot water enters into the first water tank 1 through the hot water pipe 13, and cold water enters into the second water tank 11 through the water adding pipe 17, so as to supplement the water consumption and realize the automatic control of the water supply of the boiler 2.

[0053] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A boiler hot water recovery energy saving device, characterized in that, It includes first water storage tank (1) and boiler (2), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe (3), first water storage tank (1) and boiler (2) are communicated by water delivery pipe 2. A boiler hot water recovery energy saving device according to claim 1, characterized in that, ​ 3. The boiler hot water recovery energy saving device according to claim 1, characterized in that, ​ 4. The boiler hot water recovery energy saving device according to claim 3, characterized in that, ​ 5. A boiler hot water recovery energy saving device according to claim 4, wherein ​ 6. A boiler hot water recovery energy saving device according to claim 5, wherein ​ 7. A boiler hot water recovery energy saving device according to claim 6, characterized in that, ​ 8. A boiler hot water recovery energy saving device according to claim 7, characterized in that, ​ 9. A boiler hot water recovery energy saving device according to any one of claims 5 to 8, characterized in that, ​ 10. The boiler hot water recovery energy saving device according to claim 9, characterized in that, ​

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