A saturated steam generating device based on multi-stage separation and waste heat cascade recovery using steam as a heating source

Abstract

The application discloses a saturated steam generating device based on multistage separation and waste heat gradient recovery using steam as a heating source, and relates to the technical field of steam generating devices.The saturated steam generating device comprises a separation cylinder, an evaporation cylinder and a multistage separation assembly, and a steam discharge pipe is arranged at the top end of the separation cylinder.The saturated steam generating device uses the separation cylinder, the evaporation cylinder and the multistage separation assembly, and when in use, the water in the water storage capillary is heated and evaporated to form clean high-temperature steam, the clean high-temperature steam enters the separation cylinder along a steam passing pipe, the steam goes down along the inner cylinder and then goes up through a horn mouth, and the steam continues to go up into a cyclone cylinder, so that the steam is subjected to strong cyclone separation.The saturated steam generating device realizes the functions of multistage separation and waste heat gradient recovery, and solves the problems of high pressure loss, low separation efficiency and no heat recovery function of traditional steam generating devices.

Description

Technical Field

[0001] This invention relates to the field of steam generation equipment technology, specifically to a saturated steam generation equipment based on multi-stage separation and waste heat recovery that uses steam as a heating source. Background Technology

[0002] Currently, most steam sterilizers on the market use electric water heaters to generate steam. Because of the use of electric heating, there is a safety risk of electric shock that could cause personal injury or death to the user. Furthermore, electric steam generators themselves have problems such as excessive footprint and slow heating speed.

[0003] Sterilizers typically use centralized steam supply from boiler rooms. However, the long steam supply pipes pose a risk of secondary entrainment, leading to unstable steam quality. Excessive moisture, air, or impurities in the steam can cause unsaturated steam, thus affecting sterilization effectiveness.

[0004] Traditional steam generators currently mostly employ a single-stage steam-water separator or lack this separator altogether. This results in problems such as high pressure loss, low separation efficiency, and no heat recovery function. While some separators incorporate cyclone separation structures, they fail to effectively address the issues of secondary condensate entrainment and energy waste, and lack a cascade heat recovery mechanism for the high-temperature condensate after separation.

[0005] Now, a novel saturated steam generator based on multi-stage separation and waste heat recovery, using steam as a heating source, is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a saturated steam generator based on multi-stage separation and waste heat recovery, using steam as a heating source, to solve the problems of high pressure loss, low separation efficiency, and lack of heat recovery function in traditional steam generators mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source, comprising a separation cylinder, an evaporation cylinder and a multi-stage separation assembly, wherein a water level cylinder is fixedly installed at the bottom of the front end of the separation cylinder, a drain pipe is fixedly connected between the bottom ends of the separation cylinder and the evaporation cylinder, and a steam discharge pipe is provided at the top end of the separation cylinder.

[0008] The multi-stage separation assembly includes an inner cylinder, which is fixedly connected to the top of the separation cylinder. A water distribution plate is connected to the bottom flange of the evaporation cylinder. Multiple sets of water storage tubes are vertically fixedly connected to the top of the water distribution plate. A flared mouth is provided at the bottom of the inner cylinder. Three sets of baffles are staggered on the inner wall of the inner cylinder. A cyclone is provided at the top of the inner cylinder. An air inlet is provided on the left side of the top of the cyclone. A spiral coil is provided below the cyclone. An upper straight pipe is fixedly connected between the cyclone and the spiral coil. A lower straight pipe is fixedly connected to the bottom of the spiral coil.

[0009] As a further technical solution of the present invention, there are two sets of evaporation cylinders. A steam inlet is provided at the top of the front end of the evaporation cylinder, and a condensate drain outlet is provided at the bottom of the front end of the evaporation cylinder. A steam passage pipe is fixedly connected between the separation cylinder and the evaporation cylinder, and the separation cylinder and the evaporation cylinder are connected to each other through the steam passage pipe.

[0010] As a further technical solution of the present invention, the bottom end of the water distribution plate is connected to the top end of the drain pipe, and the interiors of the water distribution plate, the water storage tube, and the drain pipe are interconnected.

[0011] As a further technical solution of the present invention, the flared mouth has an inverted conical expansion structure and the flared mouth angle is 25~35°.

[0012] As a further technical solution of the present invention, the vertical center lines of the separating cylinder and the inner cylinder coincide, and the top end of the inner cylinder and the top end of the separating cylinder are connected to form a seal.

[0013] As a further technical solution of the present invention, the cyclone tube is provided with a central inner tube, the lower end of which is open and the upper end is connected to the bottom end of the steam discharge pipe, and the interiors of the cyclone tube and the steam discharge pipe are connected.

[0014] As a further technical solution of the present invention, the cyclone and the upper straight pipe are internally connected, and the upper straight pipe passes through three sets of baffles.

[0015] As a further technical solution of the present invention, the spiral coil, the upper straight tube, and the lower straight tube are internally connected.

[0016] The spiral coil is completely submerged in water, and the bottom end of the lower straight pipe extends into the interior of the drain pipe.

[0017] The spiral coil is completely submerged in water, and the outer diameter of the lower straight pipe is smaller than the inner diameter of the drain pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the saturated steam generator based on multi-stage separation and waste heat gradient recovery using steam as a heating source realizes the functions of multi-stage separation and waste heat gradient recovery; Equipped with a separation cylinder, an evaporation cylinder, and multi-stage separation components, the system operates by having external steam enter the evaporation cylinder through the steam inlet, heating the water storage tube. The resulting condensate is discharged from the condensate drain. The water inside the storage tube evaporates to form clean, high-temperature steam, which then travels along the steam pipe into the separation cylinder. The steam descends along the inner cylinder and then ascends through the bell-shaped opening. The baffles, acting as deflectors, trap large, high-inertia droplets during multiple turns. These trapped droplets continuously accumulate, forming a liquid film that flows back to the lower layer of water in the separation cylinder. After these initial separations, the steam continues upward into the cyclone separator. An air inlet is located at the cyclone separator's inlet. Through the combined action of the tangential channel and the inner wall of the cyclone separator, the steam undergoes strong cyclone separation. The separated high-temperature condensate flows along the conical wall and the upper straight pipe at the bottom into the spiral coil. During the flow and discharge of high-temperature condensate in the spiral coil, latent heat is continuously released, forming a gradient of preheating recovery. The heated water at the bottom of the preheating separation cylinder and the high-temperature condensate are simultaneously discharged into the drain pipe along the lower straight pipe and re-enter the water distribution pan to wait for heating to form clean steam. Finally, the purified and separated dry saturated steam is discharged from the steam discharge pipe at the top of the cyclone and supplied to the steam sterilization equipment, realizing the functions of multi-stage separation and waste heat gradient recovery. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3 This is an enlarged cross-sectional view of the inner cylinder of the present invention. Figure 4 This is a front view schematic diagram of the cyclone tube structure of the present invention; Figure 5 This is an enlarged top view cross-sectional schematic diagram of the cyclone tube of the present invention; Figure 6 This is a side-view enlarged structural schematic diagram of the water level cylinder of the present invention.

[0020] In the diagram: 1. Separation cylinder; 2. Evaporation cylinder; 3. Water level cylinder; 4. Multi-stage separation assembly; 401. Inner cylinder; 402. Water distribution plate; 403. Water storage tube; 404. Bell mouth; 405. Baffle plate; 406. Cyclone tube; 407. Air inlet cut; 408. Spiral coil; 409. Upper straight pipe; 410. Lower straight pipe; 5. Drain pipe; 6. Condensate drain outlet; 7. Steam inlet; 8. Steam through pipe; 9. Steam outlet pipe. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Please refer to Figure 1-6 A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source includes a separation cylinder 1, an evaporation cylinder 2 and a multi-stage separation assembly 4. A water level cylinder 3 is fixedly installed at the bottom of the front end of the separation cylinder 1. A drain pipe 5 is fixedly connected between the bottom ends of the separation cylinder 1 and the evaporation cylinder 2. A steam discharge pipe 9 is provided at the top end of the separation cylinder 1. Please see Figure 1-6 A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source also includes a multi-stage separation component 4. The multi-stage separation component 4 includes an inner cylinder 401, which is fixedly connected to the top of the separation cylinder 1. A water distribution plate 402 is connected to the bottom flange of the evaporation cylinder 2. Multiple sets of water storage tubes 403 are vertically fixedly connected to the top of the water distribution plate 402. A bell mouth 404 is provided at the bottom of the inner cylinder 401. Three sets of baffles 405 are staggered on the inner wall of the inner cylinder 401. A cyclone 406 is provided at the top of the inner cylinder 401. An air inlet slit 407 is provided on the left side of the top of the cyclone 406. A spiral coil 408 is provided below the cyclone 406. An upper straight pipe 409 is fixedly connected between the cyclone 406 and the spiral coil 408. A lower straight pipe 410 is fixedly connected to the bottom of the spiral coil 408. There are two sets of evaporator cylinders 2. A steam inlet 7 is located at the top of the front end of evaporator cylinder 2, and a condensate drain outlet 6 is located at the bottom of the front end of evaporator cylinder 2. A steam pipe 8 is fixedly connected between separator cylinder 1 and evaporator cylinder 2, and the separator cylinder 1 and evaporator cylinder 2 are connected by the steam pipe 8. The bottom end of the water distribution plate 402 is connected to the top end of the drain pipe 5. The water distribution plate 402, the water storage tube 403, and the drain pipe 5 are internally connected. The bell mouth 404 has an inverted conical expansion structure. The angle of the bell mouth 404 is 25~35°. The vertical center lines of the separation cylinder 1 and the inner cylinder 401 coincide. The top of the inner cylinder 401 and the top of the separation cylinder 1 are connected to form a seal. The cyclone 406 is equipped with a central inner tube, the lower end of which is open and the upper end is connected to the bottom end of the steam discharge pipe 9. The interiors of the cyclone 406 and the steam discharge pipe 9 are connected. The interiors of the cyclone 406 and the upper straight pipe 409 are connected. The upper straight pipe 409 passes through three sets of baffles 405 to form multi-stage separation. The spiral coil 408, the upper straight pipe 409, and the lower straight pipe 410 are internally connected. The spiral coil 408 is completely submerged in water. The bottom end of the lower straight pipe 410 extends into the interior of the drain pipe 5. The outer diameter of the lower straight pipe 410 is smaller than the inner diameter of the drain pipe 5, making full use of the residual heat. Specifically, such as Figure 1-6 As shown, the water inside the water storage tube 403 evaporates upon heating, forming clean, high-temperature steam. This clean, high-temperature steam travels along the steam pipe 8 into the separation cylinder 1. The steam descends along the inner cylinder 401 and then ascends through the bell mouth 404. With the obstruction of the baffle plate 405, large-mass, high-inertia droplets are trapped during multiple turns. These trapped droplets continuously accumulate, forming a liquid film that flows back to the lower layer of water in the separation cylinder 1. After these initial separations, the steam continues to rise into the cyclone separator 406. An air inlet slit 407 is provided at the inlet of the cyclone separator 406. Through the synergistic effect of the tangential channel and the inner wall of the cyclone separator 406, the steam completes a strong cyclone separation. Finally, the purified and separated dry saturated steam is discharged through the steam exhaust pipe 9 at the top of the cyclone separator 406 and supplied to the steam sterilization equipment.

[0023] Working Principle: In operation, external steam first enters the evaporator 2 through the steam inlet 7, heating the water storage tube 403. The resulting condensate is discharged from the condensate drain 6. The water inside the water storage tube 403 evaporates to form clean, high-temperature steam. This clean, high-temperature steam travels along the steam pipe 8 into the separator 1. The steam descends along the inner cylinder 401 and then ascends through the bell mouth 404. With the obstruction of the baffle plate 405, large-mass, high-inertia droplets are trapped during multiple turns. These trapped droplets continuously accumulate to form a liquid film that flows back to the lower layer of water in the separator 1. After these initial separations, the steam continues to rise into the cyclone separator 406. An air inlet slit 407 is provided at the inlet of the cyclone separator 406. Through the synergistic effect of the tangential channel and the inner wall of the cyclone separator 406, the steam completes a strong cyclone separation. The separated high-temperature condensate flows along the conical wall and the upper straight pipe 409 at the bottom into the spiral coil 408. During the flow and discharge of high-temperature condensate in the spiral coil 408, latent heat is continuously released, forming a gradient of preheating recovery. The heated water at the bottom of the preheating separation cylinder 1 and the high-temperature condensate are simultaneously discharged into the drain pipe 5 along the lower straight pipe 410, and then re-enter the water distribution plate 402 to wait for heating to form clean steam. Finally, the purified and separated dry saturated steam is discharged from the steam discharge pipe 9 at the top of the cyclone 406 and supplied to the steam sterilization equipment.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A saturated steam generating device based on multi-stage separation and waste heat cascade recovery using steam as a heating source, comprising a separation cylinder (1), an evaporation cylinder (2) and a multi-stage separation assembly (4), characterized in that: A water level cylinder (3) is fixedly installed at the bottom of the front end of the separation cylinder (1), and a drain pipe (5) is fixedly connected between the bottom ends of the separation cylinder (1) and the evaporation cylinder (2). A steam discharge pipe (9) is provided at the top end of the separation cylinder (1). The multi-stage separation component (4) includes an inner cylinder (401), which is fixedly connected to the top of the separation cylinder (1). The bottom flange of the evaporation cylinder (2) is connected to a water distribution plate (402). The top of the water distribution plate (402) is vertically fixedly connected to multiple sets of water storage tubes (403). The bottom of the inner cylinder (401) is provided with a bell mouth (404). Three sets of baffles (405) are staggered on the inner wall of the inner cylinder (401). A cyclone cylinder (406) is provided at the top of the inner cylinder (401). An air inlet cut (407) is provided on the left side of the top of the cyclone cylinder (406). A spiral coil (408) is provided below the cyclone cylinder (406). An upper straight pipe (409) is fixedly connected between the cyclone cylinder (406) and the spiral coil (408). A lower straight pipe (410) is fixedly connected to the bottom of the spiral coil (408).

2. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source, as described in claim 1, is characterized in that: There are two sets of evaporation cylinders (2). A steam inlet (7) is provided at the top of the front end of the evaporation cylinder (2), and a condensate drain outlet (6) is provided at the bottom of the front end of the evaporation cylinder (2). A steam pipe (8) is fixedly connected between the separation cylinder (1) and the evaporation cylinder (2). The separation cylinder (1) and the evaporation cylinder (2) are connected by the steam pipe (8).

3. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source, as described in claim 1, is characterized in that: The bottom end of the water distribution plate (402) is connected to the top end of the drain pipe (5), and the interiors of the water distribution plate (402), the water storage tube (403), and the drain pipe (5) are connected.

4. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source, as described in claim 1, characterized in that: The flared opening (404) has an inverted conical expansion structure, and the angle of the flared opening (404) is 25~35°.

5. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source, as described in claim 1, characterized in that: The vertical center lines of the separating cylinder (1) and the inner cylinder (401) coincide, and the top end of the inner cylinder (401) and the top end of the separating cylinder (1) are connected to form a closed structure.

6. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source, as described in claim 1, characterized in that: The cyclone (406) is provided with a central inner tube, which is open at its lower end and connected to the bottom end of the steam discharge pipe (9) at its upper end. The cyclone (406) and the steam discharge pipe (9) are internally connected.

7. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source according to claim 1, characterized in that: The cyclone tube (406) and the upper straight pipe (409) are internally connected, and the upper straight pipe (409) passes through three sets of baffles (405).

8. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source, as described in claim 1, characterized in that: The spiral coil (408), the upper straight tube (409), and the lower straight tube (410) are internally connected.

9. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source, as described in claim 1, characterized in that: The spiral coil (408) is completely submerged in water, and the bottom end of the lower straight pipe (410) extends into the interior of the drain pipe (5).

10. A saturated steam generator based on multi-stage separation and waste heat recovery using steam as a heating source according to claim 1, characterized in that: The outer diameter of the lower straight pipe (410) is smaller than the inner diameter of the drain pipe (5).

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