Anhydrous steam energy saving device

Abstract

This invention discloses a waterless steam energy-saving device, comprising a water storage chamber, an outlet pipe connected to the atmosphere at the upper end of the water storage chamber, and an inlet pipe at the lower end. A front tube sheet and a rear tube sheet are respectively installed at the front and rear of the water storage chamber. A furnace is located in the water storage chamber between the front and rear tube sheets. A burner passes through the front smoke chamber and communicates with the furnace. A waterless evaporator is also installed in the water storage chamber between the front and rear tube sheets, located above the furnace. A high-temperature water inlet pipe is installed at the upper part of the water storage chamber, communicating with a spray pipe inside the waterless evaporator. A booster pump is installed on the high-temperature water inlet pipe. A partition is installed in the front smoke chamber, dividing it into a front upper smoke chamber and a front lower smoke chamber. A first return smoke pipe is installed in the lower part of the waterless evaporator, and a spray pipe is installed in the upper part. Four return smoke pipes are installed in both the waterless evaporator and the water storage chamber outside the furnace. In this invention, high-temperature water entering the spray pipe instantly forms steam upon encountering the high-temperature first return smoke pipe, significantly improving steam generation efficiency.

Description

Technical Field

[0001] This invention belongs to the field of energy-saving equipment technology, and specifically relates to a water-free energy-saving device that generates steam through spraying. Background Technology

[0002] Currently, steam generators typically involve boiling water in a boiler. Once the water reaches its boiling point, it continues to be heated to vaporize and produce steam. If high-temperature steam is required, the generated steam needs to be pressurized. The higher the pressure, the higher the steam temperature. Such a structure poses a safety hazard.

[0003] Current evaporators either produce high-pressure, high-temperature steam or normal-pressure, normal-temperature steam, neither of which can generate normal-pressure, high-temperature steam. Summary of the Invention

[0004] In view of this, the present invention provides an energy-saving device without water vapor, which solves the technical problem that current steam boxes cannot generate low-pressure high-temperature steam, and generates low-pressure high-temperature steam quickly through heated spray.

[0005] The objective of this invention is achieved through the following technical solution: An anhydrous steam energy-saving device includes a water storage chamber, an output pipe connected to the atmosphere at the upper end of the water storage chamber, and an inlet pipe at the lower end of the water storage chamber. A water pump is installed on the inlet pipe. A front tube sheet and a rear tube sheet are respectively installed at the front and rear of the water storage chamber. A closed front smoke chamber is formed between the front tube sheet and the front wall of the water storage chamber. A furnace is installed in the water storage chamber between the front and rear tube sheets. A burner passes through the front smoke chamber and is connected to the furnace. A waterless evaporator is also installed in the water storage chamber between the front and rear tube sheets, located above the furnace. A partition is installed in the front smoke chamber, positioned between the waterless evaporator and the furnace, dividing the front smoke chamber into a front upper smoke chamber and a front lower smoke chamber. A first return smoke pipe is installed in the lower part of the waterless evaporator, and a spray pipe is installed in the upper part of the waterless evaporator. Return flue pipes are installed in the water storage chambers outside the furnace and the boiler. The return flue pipe in the water storage chamber above the front partition is the second return flue pipe, the return flue pipe in the water storage chamber below the front partition is the third return flue pipe, and the return flue pipe in the lower part of the furnace is the fourth return flue pipe. The rear end of the furnace is connected to the first return flue pipe through a connecting pipe. A rear smoke hood is also installed behind the rear tube plate, covering the rear tube plate and the connecting pipes corresponding to the second and third return flue pipes. A rear lower smoke box is installed at the bottom of the rear smoke hood, and the fourth return flue pipe is connected to the rear lower smoke box. A chimney is installed at the rear end of the rear lower smoke box. A high-temperature water inlet pipe is installed above the water storage chamber, which is connected to the spray pipe in the waterless evaporator. A booster pump is installed on the high-temperature water inlet pipe.

[0006] The aforementioned waterless steam energy-saving equipment has a drain pipe at the bottom of the waterless evaporator, which leads to the outside of the machine body and has a drain valve installed at the end of the drain pipe.

[0007] In the aforementioned waterless steam energy-saving equipment, there is a gap between the rear tube plate and the inner wall of the water storage chamber, and the rear tube plate is fixed to the inner wall of the water storage chamber by several stiffeners. This creates a communication structure between the water between the rear fume hood and the rear end of the water storage chamber, and between the water between the front and rear tube plates. The water between the rear fume hood and the rear end of the water storage chamber absorbs heat from both the outer wall of the rear fume hood and the outer wall of the lower rear smoke box and the chimney wall, thus raising its temperature. This water then connects with the water entering the water storage chamber between the front and rear tube plates, increasing the overall water temperature in the water storage chamber and improving heat utilization. Simultaneously, it significantly reduces the temperature of the flue gas discharged from the chimney.

[0008] In the aforementioned waterless steam energy-saving equipment, a trumpet-shaped flue pipe is provided behind the furnace, and a semi-conical flue pipe is provided in the lower half of the waterless evaporator. The trumpet-shaped flue pipe and the semi-conical flue pipe are connected by a connecting pipe.

[0009] In the aforementioned waterless steam energy-saving equipment, a water level sensor is installed in the water storage chamber above the second return flue, and a check valve is installed on the water inlet pipe. The water level sensor, booster pump, and controller are connected.

[0010] The aforementioned waterless steam energy-saving equipment includes a temperature sensor and a pressure sensor installed in the waterless evaporation box above the first return flue, both of which are connected to the controller.

[0011] In the aforementioned waterless steam energy-saving equipment, a steam flow meter is installed on the steam output pipe extending outside the waterless evaporation box, and the steam flow meter is connected to the controller.

[0012] Compared with the prior art, the present invention has the following technical effects: This invention features a waterless evaporator box above the furnace, with a spray pipe at the upper part of the box and a first-pass flue pipe at the lower part. The spray pipe receives high-temperature water from the upper part of a water storage chamber. This high-temperature water, entering the spray pipe, forms a high-temperature water mist at the end of the pipe and is sprayed onto the first-pass flue pipe below, instantly evaporating to generate high-temperature steam. The furnace inside the water storage chamber is connected to the first-pass flue pipe via a connecting pipe. The first-pass flue pipe is sequentially connected to the second, third, and fourth-pass flue pipes and the chimney. Thus, high-temperature flue gas passes through these four flue pipes in the water storage chamber before finally exiting. The high-temperature flue gas circulates four times within the water storage chamber, extending its residence time. This allows the water in the storage chamber to fully absorb heat from each pass flue pipe, significantly increasing the water temperature entering the spray pipe and improving steam generation efficiency. Simultaneously, it significantly reduces the temperature of the exiting flue gas, achieving significant energy savings.

[0013] The upper part of the waterless evaporator of the present invention is a spray pipe, the end of which is a spray head. The lower part of the waterless evaporator is a plurality of first-pass smoke pipes, in which high-temperature smoke flows. In this way, the outer wall of the high-temperature first-pass smoke pipe is heated by the high-temperature spray, which can instantly generate steam with low pressure and high temperature. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the front tube sheet structure of the present invention.

[0016] Figure 3 This is a schematic diagram of the working state of the present invention.

[0017] Figure 4 yes Figure 1 AA sectional view.

[0018] Figure 5 yes Figure 1 View B showing the removal of the rear fume hood, rear lower fume box, chimney, and rear wall of the water storage chamber.

[0019] Figure 6 yes Figure 1 View of direction C after the removal of the rear wall of the water storage chamber. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the appendices of the embodiments of the present invention will be described below. Figure 1-3 The technical solutions in the embodiments of the present invention will be clearly and completely described.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] like Figure 1-6As shown, a waterless steam energy-saving device includes a water storage chamber 8, an output pipe 11 connected to the atmosphere at the upper end of the water storage chamber, and an inlet pipe 24 at the lower end of the water storage chamber. A front tube plate 8 and a rear tube plate 14 are respectively installed at the front and rear of the water storage chamber. The space between the front tube plate and the front wall of the water storage chamber is a closed front smoke chamber. A furnace 2 is installed in the water storage chamber between the front and rear tube plates. A burner passes through the front smoke chamber and is connected to the furnace. A waterless evaporator 6 is also installed in the water storage chamber between the front and rear tube plates. The waterless evaporator 6 is located above the furnace 3. A partition 4 is installed in the front smoke chamber, located between the waterless evaporator 6 and the furnace. The partition divides the front smoke chamber into a front upper smoke chamber and a front lower smoke chamber. A first return smoke pipe 5 is installed in the lower part of the waterless evaporator 6, and a spray pipe 12 is installed in the upper part of the waterless evaporator 6. The waterless evaporator 6 and the furnace are connected. All external water storage chambers are equipped with return flue pipes. The return flue pipe in the water storage chamber located above the front partition is the second return flue pipe 7, the return flue pipe in the water storage chamber located below the front partition is the third return flue pipe 2, and the return flue pipe in the lower part of the furnace is the fourth return flue pipe 1. The rear end of the furnace is connected to the first return flue pipe through a connecting pipe 18. A rear smoke hood 21 is also installed behind the rear tube plate. The rear smoke hood covers the rear tube plate and covers the rear tube plate and connecting pipe 18 corresponding to the second and third return flue pipes 7 and 2. A rear lower smoke box 19 is installed at the bottom of the rear smoke hood. The fourth return flue pipe is connected to the rear lower smoke box. A chimney 22 is installed at the rear end of the rear lower smoke box. A high-temperature water inlet pipe 10 is installed above the water storage chamber and is connected to the spray pipe in the waterless evaporation box. A booster pump 13 is installed on the high-temperature water inlet pipe.

[0023] The path of the high-temperature flue gas in this invention is as follows: like Figure 1 As shown, the high-temperature flue gas in the furnace flows backward through the connecting pipe upward, first turning back into the first pass flue pipe at the bottom of the waterless evaporator, and then forward into the upper front smoke chamber; second turning back, it flows backward through the second pass flue pipe around the waterless evaporator and into the rear smoke hood; third turning back downward, it flows downward through the third pass flue pipe around the furnace and into the lower front smoke chamber; fourth turning back downward, it flows downward through the fourth pass flue pipe at the bottom of the furnace and into the lower rear smoke chamber, finally turning back upward and exiting through the chimney. In this way, the high-temperature flue gas turns back five times in sequence within the water storage chamber, ensuring that the heat is fully absorbed by the water entering the chamber, significantly increasing the water temperature. This, in turn, significantly raises the water temperature entering the spray pipe, causing the sprayed water mist to evaporate instantly upon encountering the high-temperature first pass flue pipe, significantly increasing the steam generation rate and greatly improving production efficiency.

[0024] The waterless steam energy-saving device of the present invention has a condensate drain pipe 23 at the bottom of the waterless evaporator, which leads to the outside of the machine body and has a condensate valve installed at its end. High-temperature water mist sprayed from the spray pipe at the top of the waterless evaporator falls downwards under gravity and instantly evaporates upon encountering the high-temperature first-pass flue pipe, forming steam that rises and is output through the steam output pipe. Water mist that does not have time to form steam falls downwards and concentrates at the bottom of the waterless evaporator, flowing out through the condensate drain pipe. The condensate drain pipe can be connected to a water storage chamber for water recovery and replenishment.

[0025] The waterless steam energy-saving device described in this invention, such as... Figure 3 As shown, there is a gap between the rear tube sheet and the inner wall of the water storage chamber, and the rear tube sheet is fixed to the inner wall of the water storage chamber by several stiffening plates 25. This creates a communication structure between the water between the rear fume hood and the rear end of the water storage chamber, and between the water between the front and rear tube sheets. The water between the rear fume hood and the rear end of the water storage chamber absorbs heat from both the outer wall of the rear fume hood and the outer wall of the lower rear smoke box and the chimney wall, thus raising its temperature. This connection with the water entering the water storage chamber between the front and rear tube sheets increases the overall water temperature within the water storage chamber, improving heat utilization. Simultaneously, it significantly reduces the temperature of the flue gas discharged from the chimney.

[0026] The waterless steam energy-saving device of the present invention has a trumpet-shaped flue pipe 16 installed behind the furnace and a semi-conical flue pipe 17 installed in the lower half of the waterless evaporator. The trumpet-shaped flue pipe and the semi-conical flue pipe are connected by a connecting pipe 18. In this way, the trumpet-shaped flue pipe, the connecting pipe and the semi-conical flue pipe are all covered in the rear fume hood, so that the high-temperature flue gas coming out of the furnace forms two separate channels in the rear fume hood, thereby forming a three-fold return, which greatly prolongs the residence time of the flue gas in the water storage chamber, so that the heat of the high-temperature flue gas is absorbed as much as possible by the water in the water storage chamber and the high-temperature water mist in the waterless evaporator.

[0027] The waterless steam energy-saving device of this invention includes a water level sensor 15 installed in the water storage chamber above the second return flue, and a check valve installed on the inlet pipe. Both the water level sensor and the booster pump are connected to a controller. The water level sensor monitors the water level in the storage chamber in real time, and the controller automatically controls the water level in the storage chamber to replenish water. Based on the operating conditions, i.e., the steam demand, the controller controls the booster pump to adjust the amount of high-temperature water mist entering the spray pipe, achieving automatic monitoring and control.

[0028] The waterless steam energy-saving device of this invention includes a temperature sensor 26 and a pressure sensor installed in a waterless evaporation chamber above the first return flue. Both the temperature sensor and the pressure sensor are connected to a controller. The temperature sensor can monitor the temperature of the water entering the spray pipe from the water storage chamber.

[0029] This invention features a steam flow meter installed on the steam output pipe extending outside the anhydrous evaporator, and the steam flow meter is connected to a controller. This ensures the steam consumption of the terminal equipment. The working process of this invention is as follows: Open the valve on the inlet pipe 24 to raise the water level in the storage tank to the design level, that is, above the water level sensor and temperature sensor. This will fill the furnace chamber, the waterless evaporator, and the space behind the chimney in the water storage chamber with water.

[0030] Then the burner is turned on, and the flame and flue gas from the burner enter the furnace 3. The gas flows backward through the connecting pipe 18 upward, first turning back into the first pass flue pipe 5 at the bottom of the waterless evaporator 6, and then forward into the upper front smoke chamber. It turns back a second time, flowing backward through the second pass flue pipe 7 outside the waterless evaporator into the rear smoke hood 21. It turns downward a third time, flowing downward through the third pass flue pipe 2 outside the furnace into the lower front smoke chamber. It turns downward a fourth time, flowing downward into the fourth pass flue pipe 1 at the bottom of the furnace, and then backward into the lower rear smoke box 19. Finally, it turns back upward and exits through the chimney 22. During this process, after the temperature sensor detects that the water temperature has reached the design value, the controller starts the booster pump, causing the high-temperature water in the water storage chamber to enter the spray pipe for spraying. The spray pipe sprays water mist downward, and the downward water mist evaporates instantly upon encountering the high-temperature first pass flue pipe, forming high-temperature steam. The high-temperature flue gas circulates five times in sequence in the water storage chamber, and the heat is fully absorbed by the water in the water storage chamber, which greatly increases the water temperature in the water storage chamber. As a result, the water temperature entering the spray pipe is significantly increased. The sprayed water mist evaporates instantly when it encounters the high-temperature first pass flue pipe, which significantly increases the steam generation rate and greatly improves production efficiency.

[0031] This invention also includes a drain pipe at the bottom of the waterless evaporator, connected to the evaporator. The downward-flowing water mist evaporates to form steam, which is output through the steam outlet pipe. A small amount of water mist that does not evaporate gathers downwards and is discharged through the drain pipe. The outlet of the drain pipe can directly connect to the water storage chamber for replenishing the water supply. Since a drain valve is installed on the drain pipe, its lifespan would be affected if the outlet were directly located in the water storage chamber. Therefore, an improvement is made: the drain pipe extends out of the water storage chamber, a drain valve is installed on the drain pipe outside the water storage chamber, and then it is connected to the water storage chamber through a pipe. Alternatively, the drain pipe can extend outside the water storage chamber, with a drain valve installed on the drain pipe outside the water storage chamber, allowing the drain pipe to be directly supplied to the user. This way, while generating steam, it can also supply hot water to the user, achieving a multi-purpose function.

[0032] This invention features a waterless evaporator box above the furnace, with a spray pipe at the upper part and a first-pass flue pipe at the lower part. The spray pipe receives high-temperature water from the upper part of a water storage chamber. This high-temperature water mist entering the spray pipe evaporates instantly into high-temperature steam when sprayed onto the first-pass flue pipe below. The furnace inside the water storage chamber is connected to the first-pass flue pipe via a connecting pipe. The first-pass flue pipe is sequentially connected to the second, third, and fourth-pass flue pipes and the chimney. High-temperature flue gas passes through these pipes sequentially before exiting the chamber. The high-temperature flue gas circulates four times within the water storage chamber, extending its residence time. This allows the water in the storage chamber to fully absorb heat from each pass, significantly increasing the water temperature entering the spray pipe and improving steam generation efficiency. Simultaneously, it significantly reduces the temperature of the exiting flue gas, achieving significant energy savings.

[0033] The upper part of the waterless evaporator of the present invention is a spray pipe, the end of which is a spray head. The lower part of the waterless evaporator is a plurality of first-pass smoke pipes, in which high-temperature smoke flows. In this way, the outer wall of the high-temperature first-pass smoke pipe is heated by the high-temperature spray, which can instantly generate steam with low pressure and high temperature.

[0034] This invention utilizes a controller to control a booster pump to automatically supply and meet the steam temperature and steam usage requirements of terminal equipment. A temperature sensor at the upper end of the waterless evaporator provides the control output, and a pressure sensor at the upper end of the waterless evaporator controls the pressure within the evaporator to prevent overpressure. A steam flow meter on the steam output pipe of the waterless evaporator ensures the set steam usage at the terminal. A water level sensor at the upper part of the water storage chamber transmits the water level information to the controller. When the water level is below the preset level, the controller activates the booster pump to ensure water supply to the storage chamber. Steam temperature, steam pressure, steam output, and water level in the storage chamber are all integrated and controlled by the controller to achieve intelligent operation. The above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various changes and improvements without departing from the overall concept of the invention, and these should also be considered within the scope of protection of this invention.

Claims

1. A waterless steam energy-saving device, comprising a water storage chamber (8), an output pipe (11) connected to the atmosphere at the upper end of the water storage chamber, an inlet pipe (24) at the lower end of the water storage chamber, a front tube plate (8) and a rear tube plate (14) respectively provided at the front and rear parts of the water storage chamber, a closed front smoke chamber between the front tube plate and the front wall of the water storage chamber, a furnace (2) provided in the water storage chamber between the front tube plate and the rear tube plate, and a burner communicating with the furnace through the front smoke chamber, characterized in that: A waterless evaporator (6) is also installed in the water storage chamber between the front tube sheet and the rear tube sheet. The waterless evaporator (6) is located above the furnace (3). A baffle (4) is installed in the front smoke chamber. The baffle is located between the waterless evaporator and the furnace. The baffle divides the front smoke chamber into the front upper smoke chamber and the front lower smoke chamber. The lower part of the waterless evaporator is equipped with a first return smoke pipe (5). The upper part of the waterless evaporator is equipped with a spray pipe (12). Return smoke pipes are installed in both the water storage chamber outside the waterless evaporator and the furnace. The return smoke pipe in the water storage chamber located above the front baffle is the second return smoke pipe (7). The return smoke pipe in the water storage chamber located below the front baffle is the third return smoke pipe (2). The return flue located at the bottom of the furnace is the fourth return flue (1). The rear end of the furnace is connected to the first return flue through a connecting pipe (18). A rear smoke hood (21) is also installed behind the rear tube plate. The rear smoke hood is installed on the rear tube plate and covers the rear tube plate and connecting pipe (18) corresponding to the second return flue (7) and the third return flue (2). A rear lower smoke box (19) is installed at the bottom of the rear smoke hood. The fourth return flue is connected to the rear lower smoke box. A chimney (22) is installed at the rear end of the rear lower smoke box. A high-temperature water inlet pipe (10) connected to the spray pipe in the waterless evaporator is installed at the top of the water storage chamber. A booster pump (13) is installed on the high-temperature water inlet pipe.

2. The waterless steam energy-saving equipment according to claim 1, characterized in that: The bottom of the waterless evaporator is equipped with a drain pipe (23), which leads to the outside of the machine body and a drain valve is installed at the end of the drain pipe.

3. The waterless steam energy-saving equipment according to claim 2, characterized in that: There is a gap between the rear tube sheet and the inner wall of the water storage chamber, and the rear tube sheet is fixed to the inner wall of the water storage chamber by several stiffeners (25).

4. The waterless steam energy-saving equipment according to claim 3, characterized in that: A horn-shaped flue pipe (16) is provided at the rear of the furnace, and a semi-conical flue pipe (17) is provided in the lower half of the waterless evaporator. The horn-shaped flue pipe and the semi-conical flue pipe are connected by a connecting pipe (18).

5. The waterless steam energy-saving equipment according to claim 4, characterized in that: A water level sensor (15) is installed in the water storage chamber above the second return flue pipe, and a check valve is installed on the water inlet pipe. The water level sensor, booster pump and controller are connected.

6. The waterless steam energy-saving equipment according to claim 5, characterized in that: A temperature sensor and a pressure sensor are installed in the waterless evaporator above the first return flue, and both the temperature sensor and the pressure sensor are connected to the controller.

7. The waterless steam energy-saving equipment according to claim 1, characterized in that: A steam flow meter is installed on the steam output pipe extending outside the waterless evaporator, and the steam flow meter is connected to the controller.

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