A steam boiler and its working method

Abstract

The present invention discloses a steam boiler and its working method, relating to the technical field of steam boilers. In the present invention, a pressure relief chamber is provided between the steam furnace body and the cavity protection cylinder. A steam output pipe connected thereto is provided on the periphery of the arc-shaped closed cavity. A first through-flow port and a second through-flow port arranged radially are provided inside the first arc-shaped cavity. A vertical return pipe connected thereto is provided below the arc-shaped closed cavity. The lower end of the vertical return pipe is close to the bottom of the pressure relief chamber. When the pressure relief component is controlled to rotate so that the second through-flow port is aligned with the steam output pipe, the first through-flow port is connected to the pressure relief chamber, and the second arc-shaped cavity is connected to the vertical return pipe. The steam or water inside is returned to the steam furnace body along the vertical return pipe through the increased steam pressure inside the pressure relief chamber. The present invention can ensure non-external discharge pressure relief under the condition of normal steam delivery. The steam in the pressure relief chamber plays a heat preservation role for the steam furnace body, and can effectively ensure the steam generation efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of steam boilers, and particularly relates to a steam boiler and its working method. Background Art

[0002] A steam boiler refers to a boiler device for producing steam, which belongs to an energy conversion device. The energy input into the boiler includes the chemical energy in fuel and electric energy. The boiler outputs steam with a certain amount of heat energy, high-temperature water or organic heat carrier. At present, when a steam boiler is in use, after steam is generated for a period of time, due to excessive steam generation, the internal pressure of the boiler is too high, which is extremely likely to cause a bursting risk.

[0003] In the prior art, in order to prevent the boiler from exploding due to excessive internal steam pressure, a pressure relief valve is generally installed on the boiler, and the pressure control of the steam boiler is achieved through the coordinated use of a pressure monitoring gauge and the pressure relief valve. This pressure relief method often directly discharges the relieved steam into the external environment, which not only easily causes the phenomenon of temperature loss inside the steam boiler, is not conducive to ensuring the steam generation efficiency of the steam boiler, but also easily leads to the waste of water vapor inside the boiler. Therefore, we provide a steam boiler and its working method to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a steam boiler and its working method. Through the specific structural design of the furnace body mechanism, cavity forming mechanism, pressure relief and reflux mechanism, and cover sealing mechanism, the problem that the existing steam boiler is not easily caused to lose temperature during pressure relief is solved.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention is a steam boiler, including a furnace body mechanism, and the furnace body mechanism includes a steam furnace body; the steam boiler further includes a cavity forming mechanism, the cavity forming mechanism is fixedly installed on the furnace body mechanism and the two are coaxially arranged, the cavity forming mechanism includes a cavity forming casing sleeved outside the steam furnace body, and a pressure relief chamber is arranged between the steam furnace body and the cavity forming casing; and a pressure relief and reflux mechanism, the pressure relief and reflux mechanism is fixedly installed inside the pressure relief chamber and the two are coaxially arranged, the pressure relief and reflux mechanism includes a reflux assembly, the reflux assembly includes an arc-shaped closed cavity sleeved outside the steam furnace body, and a steam output pipe communicated with the arc-shaped closed cavity is arranged on the circumferential side of the arc-shaped closed cavity; a pressure relief assembly rotatably matched with the arc-shaped closed cavity is sleeved outside the steam furnace body, the pressure relief assembly includes a first arc-shaped cavity and a second arc-shaped cavity coaxially arranged, a first through-flow port and a second through-flow port arranged radially are arranged inside the first arc-shaped cavity, a vertical reflux pipe communicated with the arc-shaped closed cavity is arranged below the arc-shaped closed cavity, and the lower end of the vertical reflux pipe is close to the bottom of the pressure relief chamber; when the pressure relief assembly is controlled to rotate so that the second through-flow port is aligned with the steam output pipe, the first through-flow port is communicated with the pressure relief chamber, and the second arc-shaped cavity is communicated with the vertical reflux pipe, and the steam or water inside the pressure relief chamber flows back into the steam furnace body along the vertical reflux pipe through the increased steam pressure inside the pressure relief chamber.

[0006] The present invention is further provided that the furnace body mechanism further includes a gas heating box, a gas delivery pipe communicated with the inner cavity is fixedly installed on the circumferential side of the gas heating box, a first solenoid valve is fixedly installed on the circumferential side of the gas delivery pipe, the steam furnace body is fixedly installed on the top of the gas heating box and the two are coaxially arranged, a steam output port arranged radially is opened on the circumferential side of the steam furnace body, the steam output port is coaxially arranged with the steam output pipe, a radial reflux pipe is fixedly installed on the inner wall of the steam furnace body, and a one-way valve is installed on the circumferential side of the radial reflux pipe.

[0007] The present invention is further provided that the cavity forming mechanism further includes a heat insulation base fixedly installed on the top of the gas heating box, the heat insulation base is sleeved on the steam furnace body, the cavity forming casing is fixedly arranged on the top of the heat insulation base and the two are coaxially arranged, a partition ring is fixedly arranged on the inner wall of the cavity forming casing, the inner wall of the partition ring is fixedly installed on the outer wall of the steam furnace body, the pressure relief chamber is arranged above the partition ring, a pipe body installation port arranged radially is opened on the circumferential side of the cavity forming casing, the steam output pipe is hermetically installed inside the pipe body installation port, a water inlet pipe communicated with the pressure relief chamber is installed on the circumferential side of the cavity forming casing, and a second solenoid valve is installed on the water inlet pipe.

[0008] The present invention is further configured such that the reflux assembly further includes an arc-shaped bearing seat fixedly installed on the outer wall of the steam furnace body. The arc-shaped sealed cavity is arranged inside the arc-shaped bearing seat and they are coaxially arranged. The steam output pipe is fixedly installed on the outer wall of the arc-shaped bearing seat. The vertical reflux pipe is fixedly installed at the bottom of the arc-shaped bearing seat. One side of the arc-shaped bearing seat is fixedly provided with an arc-shaped sealed cover coaxially arranged with it.

[0009] The present invention is further configured such that the pressure relief assembly further includes a pressure relief ring seat rotatably sleeved on the outer wall of the steam furnace body. The pressure relief ring seat has a clearance fit with the arc-shaped sealed cavity. The outer wall of the pressure relief ring seat is in contact with the inner wall of the arc-shaped sealed cover. The first arc-shaped cavity and the second arc-shaped cavity are both arranged inside the pressure relief ring seat. An arc-shaped installation cavity coaxially arranged with it is formed on the circumferential side of the pressure relief ring seat. An arc-shaped bevel gear ring is fixedly provided at the top inside the arc-shaped installation cavity. A heat insulation motor seat is fixedly installed on the outer wall of the cavity-forming cylinder. A pressure relief control motor is fixedly installed on the surface of the heat insulation motor seat. The output shaft of the pressure relief control motor penetrates through the arc-shaped sealed cover and extends into the arc-shaped installation cavity. The output shaft of the pressure relief control motor is connected with a bevel gear, and the bevel gear meshes with the arc-shaped bevel gear ring.

[0010] The present invention is further configured such that a third arc-shaped cavity coaxially arranged with it is formed inside the pressure relief ring seat. A third through-flow port arranged vertically is formed at the bottom of the pressure relief ring seat. The second arc-shaped cavity and the third arc-shaped cavity are respectively communicated with the corresponding third through-flow ports. A fourth through-flow port arranged radially is formed on the inner wall of the pressure relief ring seat. The second arc-shaped cavity and the third arc-shaped cavity are respectively communicated with the corresponding fourth through-flow ports. A fifth through-flow port communicated with the first arc-shaped cavity is formed on the inner wall of the pressure relief ring seat.

[0011] The present invention is further configured such that a support seat is fixedly provided on the inner wall of the cavity-forming cylinder. The inner surface of the support seat is in sliding contact with the outer wall of the steam furnace body. An axially moving rod is slidably arranged on the support seat. A buoyancy ball is installed at the lower end of the axially moving rod. A first pushing part is installed at the upper end of the axially moving rod. A water level monitoring box is fixedly installed on the outer wall of the cavity-forming cylinder. A horizontally moving rod is arranged inside the water level monitoring box. The horizontally moving rod has a sealed sliding fit with the cavity-forming cylinder. One end of the horizontally moving rod is fixedly provided with a second pushing part adapted to the first pushing part. A pressure triggering part is installed at the other end of the horizontally moving rod. A limiting guide rod is fixedly provided inside the water level monitoring box. A moving compression plate slidably matched with the limiting guide rod is fixedly provided on the horizontally moving rod. An elastic element connected with the moving compression plate is arranged inside the water level monitoring box. A pressure sensor corresponding to the pressure triggering part is installed inside the water level monitoring box.

[0012] The present invention is further configured such that the steam boiler further includes a covering and sealing mechanism; wherein, the covering and sealing mechanism includes a first sealing cover, a sealing fixing ring is fixedly arranged at the top of the cavity protecting cylinder, a connecting member fixed to the bottom of the first sealing cover is connected to the sealing fixing ring through a fastening nut, a second sealing cover is arranged in the central opening on the first sealing cover, a mounting frame is fixedly arranged at the top of the first sealing cover, the second sealing cover is slidably sleeved on the mounting frame, and a rotating screw rod that is in threaded fit with the mounting frame and rotatably connected to the second sealing cover is provided on the mounting frame.

[0013] The present invention has the following beneficial effects: 1. In the present invention, the steam generated inside the steam furnace body enters the first arc-shaped cavity along the first through-flow port, and then enters the steam output pipe from the first arc-shaped cavity to achieve continuous steam output. When it is monitored that the steam pressure inside the steam furnace body is nearly the set threshold, the controller controls the pressure relief control motor to start, and drives the bevel gear to rotate through the pressure relief control motor. Under the meshing action of the bevel gear and the arc bevel gear ring, the pressure relief ring seat is driven to rotate until the second through-flow port rotates to the position of the steam output pipe. At this time, the first through-flow port is in communication with the pressure relief chamber, and the second arc-shaped cavity rotates to the position of the vertical return pipe. The steam generated inside the steam furnace body is discharged through the second through-flow port and the steam output pipe for transportation. At the same time, part of the steam enters the inside of the first arc-shaped cavity and enters the pressure relief chamber through the first through-flow port. Thus, it can ensure non-external discharge pressure relief under normal steam transportation conditions. The steam entering the pressure relief chamber can play a heat preservation role for the steam furnace body, and thus can effectively ensure the steam generation efficiency inside the steam furnace body.

[0014] 2. When it is monitored that the liquid level inside the steam furnace body reaches the set safety value, the controller controls the pressure relief control motor to start again, and drives the bevel gear to rotate through the pressure relief control motor. Under the meshing action of the bevel gear and the arc bevel gear ring, the pressure relief ring seat is driven to rotate until the fifth through-flow port rotates to the position of the steam output pipe. At this time, the steam output pipe is in a blocked state, the first through-flow port and the second through-flow port are both in communication with the pressure relief chamber, and the third arc-shaped cavity rotates to the position of the vertical return pipe. Then, a certain amount of water is transported into the pressure relief chamber. As the steam pressure inside the pressure relief chamber gradually increases, the steam water is pressurized. The pressurized steam water enters the third arc-shaped cavity along the vertical return pipe and the corresponding third through-flow port, and then flows into the steam furnace body from the corresponding fourth through-flow port of the third arc-shaped cavity. Thus, the automatic replenishment of the steam water in the steam furnace body is realized. When a certain amount of steam water is transported into the steam furnace body, the bevel gear is controlled to rotate in the reverse direction until the first through-flow port is aligned with the steam output pipe again. At this time, the steam generated inside the steam furnace body is discharged along the first through-flow port and the steam output pipe for transportation. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 The figure is a schematic diagram of the structure of a steam boiler.

[0017] Figure 2 for Figure 1 The structural front view.

[0018] Figure 3 for Figure 1 Side view of the structure.

[0019] Figure 4 It is a schematic diagram of the internal structure of the steam boiler in the present invention.

[0020] Figure 5 It is a structural schematic diagram of the furnace body mechanism in the present invention.

[0021] Figure 6 for Figure 5 Top view of the structure.

[0022] Figure 7 It is a structural schematic diagram of the cavity forming mechanism in the present invention.

[0023] Figure 8 for Figure 7 Schematic diagram of the structure from another angle.

[0024] Figure 9 It is a schematic diagram of the internal structure of the cavity forming mechanism in the present invention.

[0025] Figure 10 for Figure 9 A magnified view of the local structure at point A.

[0026] Figure 11 It is a structural schematic diagram of the sealing mechanism in the present invention.

[0027] Figure 12 for Figure 11 Schematic diagram of the structure from an upward perspective.

[0028] Figure 13 It is a structural schematic diagram of the pressure relief reflux mechanism in the present invention.

[0029] Figure 14 It is a schematic diagram of the structure of the reflux component in the present invention.

[0030] Figure 15 It is a schematic diagram of the structure of the pressure relief assembly in the present invention.

[0031] Figure 16 is Figure 15 the structural side view of

[0032] Figure 17 is Figure 15 the transverse structural sectional view of

[0033] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0034] 1 - furnace body mechanism, 101 - steam furnace body, 102 - gas heating box, 103 - gas delivery pipe, 104 - first solenoid valve, 105 - steam outlet, 106 - radial return pipe, 107 - check valve, 2 - cavity forming mechanism, 201 - cavity forming casing, 202 - pressure relief chamber, 203 - heat insulation base, 204 - partition ring, 205 - pipe body mounting port, 206 - water inlet pipe, 207 - second solenoid valve, 208 - support seat, 209 - axially moving rod, 210 - buoyancy ball, 211 - first pushing part, 212 - water level monitoring box, 213 - horizontally moving rod, 214 - second pushing part, 215 - pressure trigger part, 216 - limit guide rod, 217 - moving compression plate, 218 - elastic element, 219 - cover sealing fixing ring, 3 - pressure relief and return mechanism, 4 - return assembly, 401 - arc-shaped sealed cavity, 402 - steam output pipe, 403 - vertical return pipe, 404 - arc-shaped bearing seat, 405 - arc-shaped sealed cover, 5 - pressure relief assembly, 501 - first arc-shaped cavity, 502 - second arc-shaped cavity, 503 - first through-flow port, 504 - second through-flow port, 505 - pressure relief ring seat, 506 - arc-shaped mounting cavity, 507 - arc-shaped bevel gear ring, 508 - heat insulation motor seat, 509 - pressure relief control motor, 510 - bevel gear, 511 - third arc-shaped cavity, 512 - third through-flow port, 513 - fourth through-flow port, 514 - fifth through-flow port, 6 - cover sealing mechanism, 601 - first sealing cover, 602 - connecting member, 603 - central port, 604 - second sealing cover, 605 - mounting frame, 606 - rotating screw. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0036] For specific embodiment 1, please refer to Figure 1-17The present invention is a steam boiler, comprising a furnace body mechanism 1, a cavity forming mechanism 2 and a pressure relief reflux mechanism 3; the furnace body mechanism 1 comprises a steam furnace body 101 (a boiler-specific liquid level gauge is installed on the steam furnace body 101 to control the water level change in the steam furnace body 101); the cavity forming mechanism 2 is fixedly installed on the furnace body mechanism 1 and the two are coaxially arranged, the cavity forming mechanism 2 comprises a cavity forming sleeve 201 sleeved on the outside of the steam furnace body 101, and a pressure relief chamber 202 is arranged between the steam furnace body 101 and the cavity forming sleeve 201; the pressure relief reflux mechanism 3 is fixedly installed inside the pressure relief chamber 202 and the two are coaxially arranged, the pressure relief reflux mechanism 3 comprises a reflux component 4, the reflux component 4 comprises an arc-shaped closed chamber 401 sleeved on the outside of the steam furnace body 101, and a steam output pipe 402 connected to the arc-shaped closed chamber 401 is arranged on the circumference of the arc-shaped closed chamber 401 The steam furnace body 101 is externally sleeved with a pressure relief assembly 5 which is rotatably matched with the arc-shaped closed cavity 401. The pressure relief assembly 5 includes a first arc-shaped cavity 501 and a second arc-shaped cavity 502 which are coaxially arranged. The first arc-shaped cavity 501 is internally provided with a first flow port 503 and a second flow port 504 which are radially arranged. A vertical return pipe 403 which is connected to the arc-shaped closed cavity 401 is provided below the arc-shaped closed cavity 401, and the lower end of the vertical return pipe 403 is close to the bottom of the pressure relief chamber 202. When the pressure relief assembly 5 is controlled to rotate so that the second flow port 504 is aligned with the steam output pipe 402, the first flow port 503 is connected to the pressure relief chamber 202, and the second arc-shaped cavity 502 is connected to the vertical return pipe 403. The steam or water in the pressure relief chamber 202 is returned to the steam furnace body 101 along the vertical return pipe 403 through the increased steam pressure inside the pressure relief chamber 202.

[0037] In this embodiment of the present invention, the furnace body mechanism 1 also includes a gas heating box 102, and a gas delivery pipe 103 connected to its inner cavity is fixedly installed on the side of the gas heating box 102, and a first solenoid valve 104 is fixedly installed on the side of the gas delivery pipe 103. After the first solenoid valve 104 is opened, the gas is delivered into the gas heating box 102 through the gas delivery pipe 103, and the gas is burned through the combustion nozzle inside the gas heating box 102, thereby heating the bottom of the steam furnace body 101 (which belongs to the prior art and is not further described here). The steam furnace body 101 is fixedly mounted on the top of the gas heating box 102 and the two are coaxially arranged. A radially arranged steam output port 105 is opened on the side surface of the steam furnace body 101. The steam output port 105 is coaxially arranged with the steam output pipe 402. The steam generated by heating enters the steam output pipe 402 along the steam output port 105, and is then transported by the steam output pipe 402 to realize steam use. A radial return pipe 106 is fixedly mounted on the inner wall of the steam furnace body 101, and a one-way valve 107 is installed on the side surface of the radial return pipe 106.

[0038] In this embodiment of the present invention, the cavity forming mechanism 2 further includes a heat insulation base 203 fixedly installed on the top of the gas heating box 102. The heat insulation base 203 is sleeved on the steam furnace body 101. The cavity forming casing 201 is fixedly arranged on the top of the heat insulation base 203 and the two are coaxially arranged. A partition ring 204 is fixedly arranged on the inner wall of the cavity forming casing 201, and the inner wall of the partition ring 204 is fixedly installed on the outer wall of the steam furnace body 101. The pressure relief chamber 202 is arranged above the partition ring 204. A radially arranged pipe body installation port 205 is formed on the circumferential side of the cavity forming casing 201, and the steam output pipe 402 is hermetically installed inside the pipe body installation port 205. A water inlet pipe 206 communicating with the pressure relief chamber 202 is installed on the circumferential side of the cavity forming casing 201. A second solenoid valve 207 is installed on the water inlet pipe 206. After the second solenoid valve 207 is opened, a certain amount of water can be transported along the water inlet pipe 206 into the pressure relief chamber 202 by an external water supply pump.

[0039] In this embodiment of the present invention, the reflux assembly 4 further includes an arc-shaped bearing seat 404 fixedly installed on the outer wall of the steam furnace body 101. An arc-shaped sealed cavity 401 is arranged inside the arc-shaped bearing seat 404 and the two are coaxially arranged. The steam output pipe 402 is fixedly installed on the outer wall of the arc-shaped bearing seat 404, and a vertical reflux pipe 403 is fixedly installed at the bottom of the arc-shaped bearing seat 404. One side of the arc-shaped bearing seat 404 is fixedly provided with an arc-shaped sealed cover 405 coaxially with it.

[0040] The pressure relief assembly 5 further includes a pressure relief ring seat 505 rotatably sleeved on the outer wall of the steam furnace body 101. There is a clearance fit between the pressure relief ring seat 505 and the arc-shaped sealed cavity 401. The outer wall of the pressure relief ring seat 505 is in contact with the inner wall of the arc-shaped sealed cover 405. The first arc-shaped cavity 501 and the second arc-shaped cavity 502 are both arranged inside the pressure relief ring seat 505. An arc-shaped installation cavity 506 coaxially with it is formed on the circumferential side of the pressure relief ring seat 505. An arc-shaped bevel gear ring 507 is fixedly arranged at the inner top of the arc-shaped installation cavity 506; a heat insulation motor seat 508 is fixedly installed on the outer wall of the cavity forming casing 201, and a pressure relief control motor 509 is fixedly installed on the surface of the heat insulation motor seat 508. The output shaft of the pressure relief control motor 509 penetrates through the arc-shaped sealed cover 405 and extends into the arc-shaped installation cavity 506. The output shaft of the pressure relief control motor 509 is connected with a bevel gear 510, and the bevel gear 510 meshes with the arc-shaped bevel gear ring 507.

[0041] In the initial state, the first steam flow port 503 is aligned with the steam output pipe 402. The steam generated inside the steam furnace body 101 enters the first arc-shaped cavity 501 along the first steam flow port 503, and then enters the steam output pipe 402 from the first arc-shaped cavity 501 to achieve continuous steam output. When it is detected that the steam pressure inside the steam furnace body 101 is nearly the set threshold value (due to the relatively fast steam generation rate), the controller controls the pressure relief control motor 509 to start. The pressure relief control motor 509 drives the bevel gear 510 to rotate. Under the meshing action of the bevel gear 510 and the arc-shaped bevel gear ring 507, the pressure relief ring seat 505 is driven to rotate until the second steam flow port 504 rotates to the position of the steam output pipe 402. At this time, the first steam flow port 503 is in communication with the pressure relief chamber 202, and the second arc-shaped cavity 502 rotates to the position of the vertical return pipe 403 (that is, the second arc-shaped cavity 502 is in communication with the vertical return pipe 403). The steam generated inside the steam furnace body 101 is discharged through the second steam flow port 504 and the steam output pipe 402 for transportation. At the same time, part of the steam enters the first arc-shaped cavity 501 and enters the pressure relief chamber 202 through the first steam flow port 503. Thus, non-external discharge pressure relief can be achieved while the steam is being normally transported. The steam entering the pressure relief chamber 202 can play a heat preservation role for the steam furnace body 101, which can effectively ensure the steam generation efficiency inside the steam furnace body 101. At the same time, part of the steam entering the pressure relief chamber 202 flows upward along the vertical return pipe 403 until it returns to the steam furnace body 101 again through the radial return pipe 106. Since the lower end of the vertical return pipe 403 is close to the bottom of the pressure relief chamber 202, if the steam entering the pressure relief chamber 202 undergoes local condensation, the condensed water generated by the condensation will submerge the lower end of the vertical return pipe 403. As the steam pressure inside the pressure relief chamber 202 gradually increases, pressure will be generated on the condensed water, thereby driving the condensed water to flow upward along the vertical return pipe 403 until it returns to the steam furnace body 101 through the radial return pipe 106. Thus, the recycling of the pressure relief steam is realized.

[0042] Specific Embodiment 2, based on Specific Embodiment 1, a third arc-shaped cavity 511 coaxial with it is provided inside the pressure relief ring seat 505. A vertically arranged third through-flow port 512 is provided at the bottom of the pressure relief ring seat 505. The second arc-shaped cavity 502 and the third arc-shaped cavity 511 are respectively communicated with the corresponding third through-flow port 512. A radially arranged fourth through-flow port 513 is provided on the inner wall of the pressure relief ring seat 505. The second arc-shaped cavity 502 and the third arc-shaped cavity 511 are respectively communicated with the corresponding fourth through-flow port 513. A fifth through-flow port 514 communicated with the first arc-shaped cavity 501 is provided on the inner wall of the pressure relief ring seat 505; when it is monitored that the liquid level inside the steam furnace body 101 reaches the set safety value, the controller controls the pressure relief control motor 509 to start again. The bevel gear 510 is driven to rotate by the pressure relief control motor 509. Under the meshing action of the bevel gear 510 and the arc-shaped bevel gear ring 507, the pressure relief ring seat 505 is driven to rotate until the fifth through-flow port 514 rotates to the position of the steam output pipe 402. At this time, the steam output pipe 402 is in a blocked state, and the first through-flow port 503 and the second through-flow port 504 are both in communication with the pressure relief chamber 202. And the third arc-shaped cavity 511 rotates to the position of the vertical return pipe 403 (that is, the third arc-shaped cavity 511 is in communication with the vertical return pipe 403). Then, a certain amount of water is conveyed into the pressure relief chamber 202. As the steam pressure inside the pressure relief chamber 202 gradually increases, the steam used for water is pressurized (the steam in the steam furnace body 101 enters the first arc-shaped cavity 501 from the fifth through-flow port 514, and then enters the pressure relief chamber 202 from the first through-flow port 503 and the second through-flow port 504). The pressurized steam used for water enters the third arc-shaped cavity 511 along the vertical return pipe 403 and the corresponding third through-flow port 512, and then flows into the steam furnace body 101 from the fourth through-flow port 513 corresponding to the third arc-shaped cavity 511. Thus, the automatic replenishment of the steam used for water in the steam furnace body 101 is realized. When a certain amount of steam used for water is conveyed into the steam furnace body 101, the bevel gear 510 is controlled to rotate in the reverse direction until the first through-flow port 503 is aligned with the steam output pipe 402 again. At this time, the steam generated inside the steam furnace body 101 is discharged along the first through-flow port 503 and the steam output pipe 402 to realize the conveyance.

[0043] In this embodiment of the present invention, a support seat 208 is fixedly arranged on the inner wall of the cavity-forming casing 201. The inner surface of the support seat 208 is slidably attached to the outer wall of the steam furnace body 101. An axially moving rod 209 is slidably arranged on the support seat 208. A buoyancy ball 210 is installed at the lower end of the axially moving rod 209, and a first pushing part 211 is installed at the upper end of the axially moving rod 209. A water level monitoring box 212 is fixedly installed on the outer wall of the cavity-forming casing 201. A horizontally moving rod 213 is arranged inside the water level monitoring box 212, and the horizontally moving rod 213 is in sealed sliding fit with the cavity-forming casing 201; one end of the horizontally moving rod 213 is fixedly provided with a second pushing part 214 adapted to the first pushing part 211, and a pressure triggering part 215 is installed at the other end of the horizontally moving rod 213. A limiting guide rod 216 is fixedly arranged inside the water level monitoring box 212, and a moving compression plate 217 slidably engaged with the limiting guide rod 216 is fixedly arranged on the horizontally moving rod 213. An elastic element 218 connected to the moving compression plate 217 is arranged inside the water level monitoring box 212. A pressure sensor corresponding to the pressure triggering part 215 is installed inside the water level monitoring box 212 (the pressure triggering part 215 is close to the pressure sensor); when it is monitored that the liquid level inside the steam furnace body 101 reaches the set safety value, the controller controls the pressure relief control motor 509 to start again. The bevel gear 510 is driven to rotate by the pressure relief control motor 509. Under the meshing action of the bevel gear 510 and the arc bevel gear ring 507, the pressure relief ring seat 505 is driven to rotate until the fifth through-flow port 514 rotates to the position of the steam output pipe 402. At this time, the steam output pipe 402 is in a blocked state, and the first through-flow port 503 and the second through-flow port 504 are both in communication with the pressure relief chamber 202, while the third arc chamber 511 rotates to the position of the vertical return pipe 403 (that is, the third arc chamber 511 is in communication with the vertical return pipe 403). Subsequently, the controller opens the second solenoid valve 207 and the external water supply pump to convey a certain amount of water along the water inlet pipe 206 into the pressure relief chamber 202. As the water inflow in the pressure relief chamber 202 gradually increases, the buoyancy ball 210 gradually moves upward until the first pushing part 211 moving upward synchronously with the axially moving rod 209 fits with the second pushing part 214. As the water level inside the pressure relief chamber 202 continues to rise, the upward moving first pushing part 211 squeezes the second pushing part 214 to cause the horizontally moving rod 213 to move horizontally. The moving compression plate 217 moves horizontally and compresses the elastic element 218 until the pressure triggering part 215 presses against the pressure sensor. At this time, the controller receives this pressure signal and controls the second solenoid valve 207 and the external water supply pump to close. Thus, a certain amount of steam water is about to be conveyed into the pressure relief chamber 202, and then the gradually increasing steam pressure in the pressure relief chamber 202 is used to press the steam water into the steam furnace body 101.

[0044] In this embodiment of the present invention, the steam boiler further includes a sealing mechanism 6. Among them, the sealing mechanism 6 includes a first sealing cover 601. A sealing fixing ring 219 is fixedly arranged at the top of the cavity-forming cylinder 201. A connecting member 602 fixed to the bottom of the first sealing cover 601 is connected to the sealing fixing ring 219 through a fastening nut. A second sealing cover 604 is arranged in the central opening 603 on the first sealing cover 601. An installation frame 605 is fixedly arranged at the top of the first sealing cover 601. The second sealing cover 604 is slidably sleeved on the installation frame 605. A rotating screw 606 that is in threaded cooperation with the installation frame 605 and is rotationally connected to the second sealing cover 604 is provided. After the sealing mechanism 6 is installed and fixed to the top of the cavity-forming cylinder 201 and the steam furnace body 101, a certain amount of steam-making water is added into the steam furnace body 101. Then, by rotating the rotating screw 606, the second sealing cover 604 gradually moves downward until the second sealing cover 604 completely seals the central opening 603 on the first sealing cover 601. Subsequently, heating can be started at the bottom of the steam furnace body 101 to generate steam.

[0045] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A steam boiler, comprising a furnace body structure (1), wherein the furnace body structure (1) comprises a steam furnace body (101); characterized in that: The steam boiler also includes: A cavity forming mechanism (2), the cavity forming mechanism (2) being fixedly mounted on the furnace body mechanism (1) and the two are arranged coaxially, the cavity forming mechanism (2) comprising a cavity forming sleeve (201) sleeved on the outside of the steam furnace body (101), and a pressure relief chamber (202) being arranged between the steam furnace body (101) and the cavity forming sleeve (201); and a pressure relief reflux mechanism (3), the pressure relief reflux mechanism (3) being fixedly mounted inside the pressure relief chamber (202) and the two being coaxially arranged, the pressure relief reflux mechanism (3) comprising a reflux assembly (4), the reflux assembly (4) comprising an arc-shaped sealed chamber (401) sleeved outside the steam furnace body (101), the arc-shaped sealed chamber (401) being provided with a steam output pipe (402) in communication therewith on the circumference thereof; The steam furnace body (101) is externally sleeved with a pressure relief assembly (5) that is rotatably matched with the arc-shaped sealed cavity (401), the pressure relief assembly (5) comprising a first arc-shaped cavity (501) and a second arc-shaped cavity (502) that are coaxially arranged, the first arc-shaped cavity (501) being internally provided with a first flow opening (503) and a second flow opening (504) that are radially arranged, a vertical return pipe (403) that is in communication with the arc-shaped sealed cavity (401) being provided below the arc-shaped sealed cavity (401), the lower end of the vertical return pipe (403) being close to the bottom of the pressure relief chamber (202); When the pressure relief assembly (5) is controlled to rotate so that the second flow opening (504) is aligned with the steam output pipe (402), the first flow opening (503) is connected to the pressure relief chamber (202), and the second arc-shaped cavity (502) is connected to the vertical return pipe (403). The increased steam pressure inside the pressure relief chamber (202) enables the steam or water inside the pressure relief chamber (202) to flow back to the steam furnace body (101) along the vertical return pipe (403).

2. A steam boiler according to claim 1, characterized in that: The furnace body mechanism (1) further comprises a gas heating box (102), a gas delivery pipe (103) in communication with an inner cavity of the gas heating box (102) being fixedly mounted on a peripheral side surface thereof, a first solenoid valve (104) being fixedly mounted on a peripheral side surface of the gas delivery pipe (103), the steam furnace body (101) being fixedly mounted on the top of the gas heating box (102) and the two being coaxially arranged, a radially arranged steam output port (105) being provided on a peripheral side surface of the steam furnace body (101), the steam output port (105) being coaxially arranged with the steam output pipe (402), a radial return pipe (106) being fixedly mounted on an inner wall of the steam furnace body (101), and a one-way valve (107) being mounted on a peripheral side surface of the radial return pipe (106).

3. A steam boiler according to claim 2, characterized in that: The cavity forming mechanism (2) further comprises a heat insulating base (203) fixedly mounted on the top of the gas heating box (102), the heat insulating base (203) being sleeved and mounted on the steam furnace body (101), the cavity forming sleeve (201) being fixedly mounted on the top of the heat insulating base (203) and the two being coaxially arranged, the inner wall of the cavity forming sleeve (201) being fixedly mounted with a separation ring (204), the inner wall of the separation ring (204) being fixedly mounted on the outer wall of the steam furnace body (101) The pressure relief chamber (202) is arranged on the wall above the separation ring (204), the peripheral side of the cavity casing (201) is provided with a radially arranged tube body installation opening (205), the steam output pipe (402) is sealed and installed inside the tube body installation opening (205), and the peripheral side of the cavity casing (201) is provided with a water inlet pipe (206) connected to the pressure relief chamber (202), and a second solenoid valve (207) is installed on the water inlet pipe (206).

4. A steam boiler according to claim 3, characterized in that: The reflux assembly (4) also includes an arc-shaped bearing seat (404) fixedly mounted on the outer wall of the steam furnace body (101), the arc-shaped closed chamber (401) is arranged inside the arc-shaped bearing seat (404) and the two are arranged coaxially, the steam output pipe (402) is fixedly mounted on the outer wall of the arc-shaped bearing seat (404), the vertical reflux pipe (403) is fixedly mounted on the bottom of the arc-shaped bearing seat (404), and an arc-shaped closed cover 4 (05) coaxial with the arc-shaped bearing seat (404) is fixedly mounted on one side of the arc-shaped bearing seat (404).

5. A steam boiler according to claim 4, characterized in that: The pressure relief assembly (5) further comprises a pressure relief ring seat (505) rotatably sleeved on the outer wall of the steam furnace body (101); the pressure relief ring seat (505) and the arc-shaped sealed cavity (401) are clearance-matched; the outer wall of the pressure relief ring seat (505) is in contact with the inner wall of the arc-shaped sealed cover (405); the first arc-shaped cavity (501) and the second arc-shaped cavity (502) are both arranged inside the pressure relief ring seat (505); the pressure relief ring seat (505) is provided with an arc-shaped installation cavity (506) coaxial with the pressure relief ring seat (505) on the circumferential side surface; and an arc-shaped conical gear ring (507) is fixedly arranged on the top of the arc-shaped installation cavity (506); A heat-insulating motor seat (508) is fixedly mounted on the outer wall of the cavity casing (201); a pressure relief control motor (509) is fixedly mounted on the surface of the heat-insulating motor seat (508); an output shaft of the pressure relief control motor (509) passes through the arc-shaped sealed cover (405) and extends into the arc-shaped installation cavity (506); the output shaft of the pressure relief control motor (509) is connected to a bevel gear (510), and the bevel gear (510) is meshed with the arc-shaped bevel gear ring (507).

6. A steam boiler according to claim 5, characterized in that: A third arc-shaped cavity (511) coaxial with the pressure relief ring seat (505) is provided inside the pressure relief ring seat (505); a third flow opening (512) arranged vertically is provided at the bottom of the pressure relief ring seat (505); the second arc-shaped cavity (502) and the third arc-shaped cavity (511) are respectively connected to the corresponding third flow opening (512); a fourth flow opening (513) arranged radially is provided on the inner wall of the pressure relief ring seat (505); the second arc-shaped cavity (502) and the third arc-shaped cavity (511) are respectively connected to the corresponding fourth flow opening (513); and a fifth flow opening (514) connected to the first arc-shaped cavity (501) is provided on the inner wall of the pressure relief ring seat (505).

7. A steam boiler according to claim 6, characterized in that: A support seat (208) is fixedly provided on the inner wall of the cavity casing (201), and the inner surface of the support seat (208) is slidably fitted on the outer wall of the steam furnace body (101); an axial moving rod (209) is slidably provided on the support seat (208), a buoyancy ball (210) is installed on the lower end of the axial moving rod (209), and a first pushing portion (211) is installed on the upper end of the axial moving rod (209); a water level monitoring box (212) is fixedly provided on the outer wall of the cavity casing (201), and a horizontal moving rod (213) is provided inside the water level monitoring box (212); the horizontal moving rod (213) and the cavity casing (201) are sealed and slidably matched; A second pushing portion (214) matched with the first pushing portion (211) is fixedly arranged at one end of the horizontal moving rod (213), a pressure triggering portion (215) is installed at the other end of the horizontal moving rod (213), a limit guide rod (216) is fixedly arranged inside the water level monitoring box (212), a movable compression plate (217) slidably matched with the limit guide rod (216) is fixedly arranged on the horizontal moving rod (213), an elastic element (218) connected with the movable compression plate (217) is arranged inside the water level monitoring box (212), and a pressure sensor corresponding to the pressure triggering portion (215) is installed inside the water level monitoring box (212).

8. A steam boiler according to claim 7, characterized in that: The steam boiler also includes a sealing mechanism (6); wherein the sealing mechanism (6) includes a first capping cover (601), a capping fixing ring (219) is fixedly arranged on the top of the cavity casing (201), a connecting piece (602) fixed at the bottom of the first capping cover (601) and the capping fixing ring (219) are connected via a fastening nut, a second capping cover (604) is arranged in the central opening (603) on the first capping cover (601), a mounting frame (605) is fixedly arranged on the top of the first capping cover (601), the second capping cover (604) is slidably mounted on the mounting frame (605), and a rotating screw (606) is threadedly matched on the mounting frame (605) and rotatably connected to the second capping cover (604).

9. A steam boiler operating method according to claim 8, characterized in that: The steps include: S01. After the capping mechanism (6) is installed and fixed to the cavity casing (201) and the top of the steam furnace body (101), a certain amount of steam water is added into the steam furnace body (101), and then the second capping cover (604) is gradually moved downward by rotating the rotating screw (606) until the second capping cover (604) completely seals the central opening (603) on the first capping cover (601); S02, after opening the first solenoid valve (104), the gas is transported into the gas heating box (102) through the gas transport pipe (103), the gas is burned through the combustion nozzle inside the gas heating box (102), and the bottom of the steam furnace body (101) is heated by the temperature inside the gas heating box (102). In the initial state, the first flow opening (503) is aligned with the steam output pipe (402), and the steam generated inside the steam furnace body (101) enters the first arc-shaped cavity (501) along the first flow opening (503), and then enters the steam output pipe (402) from the first arc-shaped cavity (501) to realize continuous steam output; S03. When it is detected that the steam pressure inside the steam furnace body (101) is close to the set threshold, the controller controls the pressure relief control motor (509) to start, and the pressure relief control motor (509) drives the bevel gear (510) to rotate. Under the meshing action of the bevel gear (510) and the arc-shaped bevel gear ring (507), the pressure relief ring seat (505) is driven to rotate until the second flow port (504) rotates to the position of the steam output pipe (402). At this time, the first flow port (503) and the pressure relief chamber (202) are in a connected state, and the second arc-shaped bevel gear ring (507) is meshed with each other. The arc-shaped cavity (502) rotates to the position of the vertical return pipe (403), and the steam generated inside the steam furnace body (101) is discharged through the second flow port (504) and the steam output pipe (402) to achieve transportation. At the same time, part of the steam enters the first arc-shaped cavity (501) and enters the pressure relief chamber (202) through the first flow port (503). At the same time, part of the steam that enters the pressure relief chamber (202) flows upward along the vertical return pipe (403) until it returns to the steam furnace body (101) through the radial return pipe (106); S04. When it is detected that the liquid level inside the steam furnace body (101) reaches a set safety value, the controller controls the pressure relief control motor (509) to start again, and the pressure relief control motor (509) drives the bevel gear (510) to rotate. Under the meshing action of the bevel gear (510) and the arc-shaped bevel gear ring (507), the pressure relief ring seat (505) is driven to rotate until the fifth flow port (514) rotates to the position of the steam output pipe (402). At this time, the steam output pipe (402) is in a blocked state, the first flow port (503) and the second flow port (504) are both in a connected state with the pressure relief chamber (202), and the third arc-shaped chamber (511) rotates to the position of the vertical return pipe (403); S05. Subsequently, a certain amount of water is transported into the pressure relief chamber (202). As the steam pressure in the pressure relief chamber (202) gradually increases, the steam water is pressurized. The pressurized steam water enters the third arc-shaped cavity (511) along the vertical return pipe (403) and the corresponding third flow opening (512), and then flows into the steam furnace body (101) through the fourth flow opening (513) corresponding to the third arc-shaped cavity (511), thereby realizing automatic replenishment of the steam water in the steam furnace body (101). When a certain amount of steam water is transported into the steam furnace body (101), the bevel gear (510) is controlled to run in the reverse direction until the first flow opening (503) is realigned with the steam output pipe (402). At this time, the steam generated in the steam furnace body (101) is discharged along the first flow opening (503) and the steam output pipe (402) to achieve transportation.

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