CN207378790U - A gas steam generator - Google Patents

Abstract

The utility model provides a gas steam generator, which comprises a frame body, an air inlet solenoid valve, a fire grate, an observation window, a chamber protection, a smoke circulation component, a water circulation component and a scale cleaning component, wherein the fire grate is arranged on the lower end surface inside the frame body, the air inlet solenoid valve is assembled on the right end surface of the fire grate, the chamber protection is arranged on the upper end surface of the fire grate, the observation window is arranged on the front end surface of the chamber protection, the water circulation component is arranged on the upper end surface of the chamber protection, the smoke circulation component is assembled inside the water circulation component, the scale cleaning component is assembled inside the water circulation component, the smoke circulation component comprises an inner container and a, fin and the pipe of discharging fume, hydrologic cycle subassembly include water level balance bucket, blowdown ball valve, water level probe, arrange steam pipe and relief valve, and the clean subassembly of incrustation scale includes pivot, scrapes a frame, ring cover, doctor-bar brush, hanger plate and clear dirty mouthful, compares with prior art, the utility model discloses following beneficial effect has: the efficiency of flue gas heat exchange is improved, still reached the difficult purpose that scales are built to the inner bag, and be convenient for carry out mechanical descaling.

Description

A gas steam generator

technical field

The utility model relates to a gas steam generator, which belongs to the field of steam generating equipment.

Background technique

A steam generator (commonly known as a boiler) is a mechanical device that uses heat energy from fuel or other energy sources to heat water into hot water or steam. A gas steam generator is a mechanical device that uses gas as a fuel to generate steam. The steam generator, the flue pipe of the square-wave circulating flue is composed of two half-pipe bodies that are symmetrical along the central axis. The half-pipe body is made by die stamping process. Square wave shape. The outer edge of the square-wave pipeline of the half-pipe body is provided with an extended fin part covering the entire pipeline, and the edge of the fin part is provided with a hem, and the two half-pipe bodies are joined together by the hem structure.

The flue pipe structure of the gas steam generator in the prior art is simple in structure, and the heat exchange efficiency is low; the residual heat of the flue gas in the gas steam generator in the prior art cannot be utilized, the heat is wasted seriously, and it is easy to foul inside the pipe, Cleaning is inconvenient, so a gas steam generator is needed to solve the above problems.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a gas steam generator to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model is achieved through the following technical solutions: a gas steam generator, including a frame, an intake solenoid valve, a fire row, an observation window, a guard, a smoke circulation component, a water circulation component and scale Cleaning assembly, the fire row is installed on the lower end surface inside the frame, the intake solenoid valve is assembled on the right end surface of the fire row, the guard is installed on the upper end face of the fire row, and the observation window is opened on the front end of the guard. The water circulation assembly is installed on the upper end of the guard, the smoke circulation assembly is assembled inside the water circulation assembly, the scale cleaning assembly is assembled inside the water circulation assembly, and the smoke circulation assembly includes an inner tank, fire tube, fins, smoke cover, Heat exchanger, fan and smoke exhaust pipe, the water circulation assembly includes a water level balance bucket, sewage ball valve, water level probe, pressure switch, metal hose, elbow, steam exhaust pipe and safety valve, and the scale cleaning assembly includes a rotating shaft , scraper frame, ring sleeve, scraper brush, magnet ring, electromagnet, air pressure lifting rod, hanging plate and cleaning port.

Further, in the smoke circulation assembly, the inner tank is connected to the upper end surface of the armor, and more than two fire tubes are provided, and the two or more fire tubes are equidistantly arranged inside the inner tank, and the fire tubes The upper end and the lower end of the pipe extend to the upper end and the lower end of the annular side of the inner tank respectively, the fins are fixed on the fire tube, the smoke hood is fixed at the upper end of the inner tank, the heat exchanger is connected to the upper end of the smoke hood, and the row The smoke pipe is installed on the left end face of the heat exchanger, the fan is installed on the upper end face of the heat exchanger, and both the fan and the smoke exhaust pipe are connected with the inside of the heat exchanger.

Further, the fire tube includes a half-pipe one and a half-pipe two, fins are fixed on the first half-pipe and the second half-pipe, and both the first half-pipe and the second half-pipe have an S-shaped structure. At the same time, the two sides of the first half pipe and the second half pipe are combined, welded and formed, occupying a reasonable space, and more in line with the law of heat decline of fire and smoke. The smoke travels smoothly inside the fire pipe and exchanges heat with the water in the inner tank fully and efficiently.

Further, the inner tank is connected to the upper end surface of the breech, more than two fire tubes are arranged equidistantly inside the inner tank, the fins are fixed on the fire tubes, the smoke cover is fixed on the upper end of the inner tank, The heat exchanger is connected to the upper end of the smoke hood, the exhaust pipe is installed on the left end of the heat exchanger, the fan is installed on the upper end of the heat exchanger, and the fan is connected to an external power supply through wires. At this time, make the fire row work, generate flame, and control the size of the firepower through the intake solenoid valve, the flame burns into the inside of the fire pipe, and then connects the circuit between the fan and the external power supply, and the fan works to control the high temperature smoke from the flame burning The gas is pumped to make the high-temperature flue gas flow along the fire pipe, and the temperature is transferred to the water flow inside the inner tank through the fins, and the water flow inside the inner tank is heated and vaporized, and then the flue gas enters the heat exchanger through the fume hood. The heat exchanger collects the residual heat in the flue gas and heats the cold water passing through the elbow, and then the flue gas is discharged through the exhaust pipe, which improves the utilization rate of the heat in the flue gas.

Further, a high-temperature-resistant sealing gasket is installed between the fume hood and the inner tank, and a heat-resistant sealing gasket is installed between the fume hood and the heat exchanger, which improves the sealing performance and ensures the heat exchange rate.

Further, in the water circulation assembly, the water level balance barrel is arranged on the right side of the liner, and the upper end and the lower end of the water level balance barrel are respectively connected to the liner through pipes, and the sewage discharge ball valve is installed inside the cleaning port. The upper end of the water level probe is installed on the upper surface of the water level balance barrel, and the lower end of the water level probe passes through the water level balance barrel and extends to the inside of the water level balance barrel. The pressure switch is set on the right side of the water level probe, and the pressure switch is installed on the water level The upper end of the balance barrel, the lower end of the metal hose is connected to the right side of the inner tank, and the upper end of the metal hose is connected to the right end of the elbow, the elbow is assembled inside the heat exchanger, and the left end of the elbow is connected to the water inlet connected, the steam exhaust pipe is installed at the upper position on the left end surface of the liner, and the safety valve is installed at the upper end of the steam exhaust pipe.

Further, the lower end of the metal hose is connected to the right side of the inner tank, and the upper end of the metal hose is connected to the right end of the elbow, the elbow is assembled inside the heat exchanger, and the left end of the elbow is connected to the water flow inlet , the steam exhaust pipe is installed on the upper part of the left end surface of the liner, and the safety valve is installed on the upper end of the steam exhaust pipe. In actual use, cold water is input through the left end of the elbow and the water flow inlet. During the process of cold water passing through the elbow, The residual heat of the flue gas in the heat exchanger is absorbed, the temperature rises, and then flows into the inner tank through the metal hose, and the hot water in the inner tank absorbs the heat of the flue gas inside the fire tube and vaporizes, and passes through the steam exhaust pipe When the pressure in the inner tank is high, the safety valve will automatically open to release the pressure, which has high safety.

Further, the water level balance bucket is set on the right side of the inner tank, and the upper end and lower end of the water level balance tank are respectively connected to the inner tank through pipes, the sewage discharge ball valve is installed inside the cleaning port, and the upper end of the water level probe is installed on the The upper end surface of the water level balance barrel, and the lower end of the water level probe passes through the water level balance barrel and extends to the inside of the water level balance barrel. The pressure switch is set on the right side of the water level probe, and the pressure switch is installed on the upper end surface of the water level balance barrel. When in use, since the upper end and the lower end of the water level balance barrel are connected with the interior of the inner tank, the internal pressure condition of the water level balance tank is the same as that of the inner tank, and the water level and pressure in the water level balance tube are measured by the water level probe and the pressure switch to obtain the inner tank. The internal pressure and water level, the sewage ball valve is set at the lower end of the water level balance barrel, which is convenient for mechanical cleaning and sewage discharge.

Further, in the scale cleaning assembly, the rotating shaft is assembled on the left end surface of the inner tank, and the right end of the rotating shaft is fixed on the left end surface of the scraper frame, and the scraper frame is assembled inside the inner tank and adheres to the inner wall of the inner tank close, the ring set is fitted inside the water level balance bucket, the scraper brush is assembled on the annular side of the ring set, the magnet ring is fixed on the lower end surface of the ring set, the electromagnet is fixed on the upper end surface of the air pressure lifting rod, the The air pressure lifting rod is assembled inside the hanging plate, and the hanging plate is arranged on the lower side of the cleaning port, and the hanging plate is fixed at the lower end of the ring side of the inner tank, and the cleaning port is set on the lower end surface of the water level balance barrel.

Further, the rotating shaft is assembled on the left end face of the inner container, and the right end of the rotating shaft is fixed on the left end face of the scraper frame, the scraper frame is assembled inside the inner container, the scraper brush is assembled on the annular side of the collar, and the magnet The ring is fixed on the lower end surface of the ring sleeve, the electromagnet is fixed on the upper end surface of the air pressure lifting rod, the air pressure lifting rod is assembled inside the hanging plate, the cleaning port is opened on the lower end surface of the water level balance bucket, and the ring side of the left end of the rotating shaft is It is equipped with a rubber sleeve. During actual use, hold the rotating shaft and turn it. The rotation of the rotating shaft will drive the scraper frame to rotate. The rotation of the scraper frame will clean the scale on the inner wall of the inner tank, and then open the sewage ball valve to make the air pressure lifter work. , and connect the electromagnet to the external power supply, so that the electromagnet is magnetic, and the air pressure lifting rod works to drive the electromagnet to pass through the sewage ball valve and enter the water level balance bucket. The magnet ring is closely attached to the electromagnet under the action of magnetic attraction. In this way, the connection between the air pressure lifting rod and the ring sleeve is realized, and then the air pressure lifting rod drives the ring sleeve to move, and the ring sleeve moves to drive the scraper brush to move, so as to scrape off the scale on the inner wall of the water level balance bucket and discharge it through the cleaning port, which is convenient for cleaning. Limescale cleaning.

Beneficial effects of the utility model: a gas steam generator of the utility model improves the efficiency of flue gas heat exchange due to the addition of inner tanks, fire pipes, fins, smoke hoods, heat exchangers, fans and smoke exhaust pipes. Efficiency, reducing heat waste.

Because the utility model adds a water level balance barrel, a sewage ball valve, a water level probe, a pressure switch, a metal hose, an elbow, a steam exhaust pipe and a safety valve, the inner tank is not easily scaled, and it is convenient for mechanical descaling , good security.

Because the utility model adds a rotating shaft, a scraper frame, a ring sleeve, a scraper brush, a magnet ring, an electromagnet, an air pressure lifting rod, a hanging plate and a cleaning port, the design is convenient for mechanical descaling and improves the cleaning effect.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the structural representation of a kind of gas steam generator of the present utility model;

Fig. 2 is a structural schematic diagram of a smoke circulation component in a gas steam generator of the present invention;

Fig. 3 is a structural schematic diagram of a water circulation component in a gas steam generator of the present invention;

Fig. 4 is a schematic structural view of an embodiment of a gas steam generator of the present invention;

Fig. 5 is a schematic structural view of a scale cleaning component in a gas steam generator of the present invention;

Fig. 6 is an enlarged schematic diagram of A of the scale cleaning component in a gas steam generator of the present invention;

Fig. 7 is a structural schematic diagram of a scraper frame in a scale cleaning component of a gas steam generator of the present invention;

In the figure: 1-Frame body, 2-Inlet solenoid valve, 3-Fire row, 4-Observation window, 5-Armour, 6-Smoke circulation component, 7-Water circulation component, 8-Scale cleaning component, 61-Inner Gallbladder, 62-fire pipe, 63-fin, 64-fume hood, 65-heat exchanger, 66-fan, 67-exhaust pipe, 71-water level balance barrel, 72-drainage ball valve, 73-water level probe, 74-pressure switch, 75-metal hose, 76-elbow, 77-exhaust steam pipe, 78-safety valve, 81-rotating shaft, 82-scraper frame, 83-ring sleeve, 84-scraper brush, 85- Magnet ring, 86-electromagnet, 87-air pressure lifting rod, 88-hanging plate, 89-cleaning port.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

Please refer to Figure 1-Figure 7, the utility model provides a technical solution: a gas steam generator, including a frame 1, an intake solenoid valve 2, a fire row 3, an observation window 4, a guard 5, and a smoke circulation component 6. The water circulation component 7 and the scale cleaning component 8, the fire row 3 is installed on the inner lower end of the frame body 1, the intake solenoid valve 2 is assembled on the right end of the fire row 3, the guard 5 is installed on the upper end of the fire row 3, and the observation window 4 Set on the front face of the guard 5, the water circulation component 7 is installed on the upper end of the guard 5, the smoke circulation component 6 is assembled inside the water circulation component 7, the scale cleaning component 8 is assembled inside the water circulation component 7, and the smoke circulation component 6 includes an inner container 61, Fire pipe 62, fins 63, smoke hood 64, heat exchanger 65, fan 66 and exhaust pipe 67, water circulation assembly 7 includes water level balance bucket 71, sewage ball valve 72, water level probe 73, pressure switch 74, metal hose 75. Elbow 76, steam exhaust pipe 77 and safety valve 78. Scale cleaning assembly 8 includes rotating shaft 81, scraper frame 82, ring sleeve 83, scraper brush 84, magnet ring 85, electromagnet 86, air pressure lifting rod 87, Hanging plate 88 and cleaning port 89.

In the smoke circulation assembly 6, the inner tank 61 is connected to the upper end surface of the armor chamber 5, and more than two fire tubes 62 are provided, and the two or more fire tubes 62 are equidistantly arranged inside the inner tank 61, and the upper and lower ends of the fire tubes 62 are The fins 63 are fixed on the fire pipe 62, the smoke hood 64 is fixed on the upper end of the inner tank 61, the heat exchanger 65 is connected to the upper end of the smoke hood 64, and the exhaust pipe 67 is installed on the The left end face of the heat exchanger 65, the fan 66 is installed on the upper end face of the heat exchanger 65, and the fan 66 and the exhaust pipe 67 are all connected with the inside of the heat exchanger 65.

In the water circulation assembly 7, the water level balance bucket 71 is arranged on the right side of the inner tank 61, and the upper and lower ends of the water level balance tank 71 are respectively connected to the inner tank 61 through pipes, and the sewage discharge ball valve 72 is installed inside the cleaning port 89, and the water level probe The upper end of 73 is installed on the upper end surface of the water level balance barrel 71, and the lower end of the water level probe 73 passes through the water level balance barrel 71 and extends to the inside of the water level balance barrel 71. The pressure switch 74 is arranged on the right side of the water level probe 73, and the pressure switch 74 is installed On the upper end of the water level balance barrel 71, the lower end of the metal hose 75 is connected to the right side of the inner tank 61, and the upper end of the metal hose 75 is connected to the right end of the elbow 76, which is assembled inside the heat exchanger 65, and The left end of the pipe 76 is connected with the water flow inlet, and the steam exhaust pipe 77 is arranged on the upper position on the left end surface of the inner bag 61, and the safety valve 78 is installed on the upper end of the steam exhaust pipe 77.

In the scale cleaning assembly 8, the rotating shaft 81 is assembled on the left end surface of the inner container 61, and the right end of the rotating shaft 81 is fixed on the left end surface of the scraper frame 82, and the scraper frame 82 is assembled inside the inner container, and is attached to the inner wall of the inner container 61, The ring sleeve 83 is assembled inside the water level balance barrel 71, the scraper brush 84 is assembled on the ring side of the ring sleeve 83, the magnet ring 85 is fixed on the lower end surface of the ring sleeve 83, the electromagnet 86 is fixed on the upper end surface of the air pressure lifting rod 87, and the air pressure lifting rod 87 Assembled inside the hanging plate 88, the hanging plate 88 is arranged on the lower side of the cleaning port 89, and the hanging plate 88 is fixed at the lower end of the annular side of the inner tank 61, and the cleaning port 89 is opened on the lower end surface of the water level balance barrel 71.

Please refer to Fig. 4, as an embodiment of the present utility model: fire pipe 62 comprises half pipe one 621 and half pipe one 622, all is fixed with fin 63 on half pipe one 621 and half pipe one 622, half pipe one 621 and half pipe one 622 The half pipe 622 has an S-shaped curved structure of the large intestine of the human body. In actual use, the half pipe 621 and the half pipe 622 are combined and welded to form a reasonable space. It runs smoothly inside the fire tube 62 and exchanges heat with the water in the inner tank 61 fully and efficiently.

As an embodiment of the present utility model: the inner tank 61 is connected to the upper end surface of the breech 5, more than two fire tubes 62 are equidistantly arranged inside the inner tank 61, the fins 63 are fixed on the fire tubes 62, and the smoke cover 64 is fixed The upper end of the inner tank 61, the heat exchanger 65 is connected to the upper end surface of the fume hood 64, the exhaust pipe 67 is installed on the left end surface of the heat exchanger 65, the fan 66 is installed on the upper end surface of the heat exchanger 65, and the fan 66 is connected to the external power supply through wires. connection, in actual use, the fire row 3 is made to work to generate flames, and the size of the firepower is controlled through the intake solenoid valve 2, and the flames burn into the inside of the fire pipe 62, and then the circuit between the fan 66 and the external power supply is connected The fan 66 works to pump the high-temperature flue gas from flame combustion, so that the high-temperature flue gas flows along the fire pipe 62, and transmits the temperature to the water flow inside the inner tank 61 through the fins 63, and heats the water flow inside the inner tank 61. Then the flue gas enters the heat exchanger 65 through the smoke hood 64, the heat exchanger 65 collects the residual heat in the flue gas and heats the cold water passing through the elbow 76, and then the flue gas is discharged through the flue gas exhaust pipe 67 , improve the utilization rate of heat in the flue gas.

As an embodiment of the present utility model: a high-temperature-resistant gasket is installed between the fume hood 64 and the inner tank 61, and a heat-resistant gasket is installed between the fume hood 64 and the heat exchanger 65, which improves the sealing performance and ensures the heat preservation. exchange rate.

As an embodiment of the present invention: the lower end of the metal hose 75 is connected to the inner right side of the liner 61, and the upper end of the metal hose 75 is connected to the right end of the elbow 76, and the elbow 76 is assembled inside the heat exchanger 65, and The left end of the elbow 76 is connected with the water flow inlet, and the steam exhaust pipe 77 is installed on the upper position of the left end surface of the inner tank 61, and the safety valve 78 is installed at the upper end of the steam exhaust pipe 77. Input, cold water absorbs the residual heat of the flue gas in the heat exchanger 65 during the process of passing through the elbow 76, the temperature rises, and then flows into the inner tank 61 through the metal hose 75, and the hot water in the inner tank 61 is absorbed through The heat of the flue gas inside the fire pipe 62 is vaporized and discharged through the steam exhaust pipe 77. When the pressure in the inner tank 61 is high, the safety valve 78 is automatically opened to release the pressure, which has high safety.

As an embodiment of the present utility model: the water level balance bucket 71 is arranged on the right side of the inner tank 61, and the upper end and the lower end of the water level balance bucket 71 are respectively connected to the inner tank 61 through pipelines, and the sewage discharge ball valve 72 is installed inside the cleaning port 89, The upper end of the water level probe 73 is installed on the upper surface of the water level balance barrel 71, and the lower end of the water level probe 73 passes through the water level balance barrel 71 and extends to the inside of the water level balance barrel 71. The pressure switch 74 is arranged on the right side of the water level probe 73, and the pressure The switch 74 is installed on the upper end surface of the water level balance barrel 71. In actual use, since the upper and lower ends of the water level balance barrel 71 are connected with the interior of the inner tank 61, the internal pressure condition of the water level balance barrel 71 is the same as that of the inner tank 61. Through the water level probe 73 and the pressure switch 74 measure the water level and the pressure in the water level balance pipe, thereby obtaining the pressure and the water level inside the liner 61. The sewage ball valve 72 is arranged at the lower end of the water level balance bucket 71, which is convenient for mechanical cleaning and sewage discharge.

As an embodiment of the present utility model: the rotating shaft 81 is assembled on the left end surface of the inner container 61, and the right end of the rotating shaft 81 is fixed on the left end surface of the scraper frame 82, the scraper frame 82 is assembled inside the inner container 61, and the scraper brush 84 is assembled on the ring The ring side of the sleeve 83, the magnet ring 85 is fixed on the lower end surface of the ring sleeve 83, the electromagnet 86 is fixed on the upper end surface of the air pressure lifting rod 87, the air pressure lifting rod 87 is assembled inside the hanging plate 88, and the cleaning port 89 is opened under the water level balance bucket 71 On the end face, the ring side of the left end of the rotating shaft 81 is equipped with a rubber sleeve. During actual use, hold the rotating shaft 81 and turn it. The rotation of the rotating shaft 81 drives the rotation of the scraper frame 82. The rotation of the scraper frame 82 cleans the scale on the inner wall of the inner tank 61 , then open the blowdown ball valve 72, make the air pressure lifting rod 87 run, and connect the electromagnet 86 with an external power supply, make the electromagnet 86 magnetic, and the work of the air pressure lifting rod 87 drives the electromagnet 86 to pass through the inside of the blowdown ball valve 72 and enter Inside the water level balance barrel 71, the magnet ring 85 is closely attached to the electromagnet 86 under the action of magnetic attraction, thereby realizing the connection between the air pressure lifting rod 87 and the ring sleeve 83, and then the air pressure lifting rod 87 drives the ring sleeve 83 to move, and the ring sleeve 83 moves Drive the scraper brush 84 to move, thereby scrape off the scale on the inner wall of the water level balance barrel 71, and discharge it through the cleaning port 89, so as to facilitate the cleaning of scale.

The basic principles and main features of the utility model and the advantages of the utility model have been shown and described above. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the utility model The present utility model can be realized in other specific forms without the spirit or essential features. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. A gas-fired steam generator, comprising a frame, an intake solenoid valve, a fire row, an observation window, a guard, a smoke circulation assembly, a water circulation assembly and a scale cleaning assembly, characterized in that: the fire row is installed in the frame The air intake solenoid valve is assembled on the right end face of the fire row, the guard is installed on the upper end face of the fire row, the observation window is set on the front end face of the guard, and the water circulation component is installed on the upper end face of the guard. The smoke circulation assembly is assembled inside the water circulation assembly, and the scale cleaning assembly is assembled inside the water circulation assembly. The smoke circulation assembly includes an inner container, a fire pipe, fins, a smoke hood, a heat exchanger, a fan and a smoke exhaust pipe. The water circulation component includes a water level balance bucket, a sewage ball valve, a water level probe, a pressure switch, a metal hose, an elbow, a steam exhaust pipe and a safety valve, and the scale cleaning component includes a rotating shaft, a scraper frame, a ring sleeve, and a scraper brush , magnet ring, electromagnet, air pressure lifting rod, hanging plate and cleaning port. 2. A gas-fired steam generator according to claim 1, characterized in that: in the smoke circulation assembly, the inner tank is connected to the upper end surface of the armor, and the fire tube is provided with more than two, two More than two fire tubes are equidistantly arranged inside the inner tank, and the upper end and the lower end of the fire tubes extend to the upper end and the lower end of the annular side of the inner tank respectively, the fins are fixed on the fire tubes, and the smoke cover is fixed on the inner tank At the upper end, the heat exchanger is connected to the upper end surface of the smoke hood, the exhaust pipe is installed on the left end surface of the heat exchanger, the fan is installed on the upper end surface of the heat exchanger, and the fan and the exhaust pipe are connected to the inside of the heat exchanger. connected. 3. A gas-fired steam generator according to claim 2, characterized in that: said fire pipe comprises half pipe one and half pipe two, said half pipe one and half pipe two are fixed with fins, so Both the first half pipe and the second half pipe have an S-shaped structure. In actual use, the two sides of the first half pipe and the second half pipe are combined and welded to form a reasonable space. The inside of the tube runs smoothly and exchanges heat with the water in the inner tank fully and efficiently. 4. A gas-fired steam generator according to claim 2, characterized in that: the inner tank is connected to the upper end surface of the armor, two or more of the fire tubes are equidistantly arranged inside the inner tank, and the fins The sheet is fixed on the fire pipe, the smoke hood is fixed on the upper end of the inner tank, the heat exchanger is connected to the upper end of the smoke hood, the exhaust pipe is installed on the left end of the heat exchanger, and the fan is installed on the heat exchanger On the upper end, the fan is connected to the external power supply through wires. In actual use, the fire row is operated to generate flames, and the size of the fire is controlled through the intake solenoid valve. The flame burns into the inside of the fire pipe, and then the fan and The circuit between the external power supply is connected, and the fan works to pump the high-temperature flue gas from the flame combustion, so that the high-temperature flue gas flows along the fire pipe, and the temperature is transmitted to the water flow inside the inner tank through the fins, and the water flow inside the inner tank is controlled. Heating and gasification, then the flue gas enters the heat exchanger through the fume hood, the heat exchanger collects the residual heat in the flue gas and heats the cold water passing through the elbow pipe, and then the flue gas is discharged through the exhaust pipe, improving Utilization of heat in the flue gas. 5. A gas-fired steam generator according to claim 2, characterized in that: a high temperature resistant gasket is installed between the hood and the inner tank, and a heat-resistant gasket is installed between the hood and the heat exchanger. The gasket improves the sealing performance and ensures the heat exchange rate. 6. A gas-fired steam generator according to claim 1, characterized in that: in the water circulation assembly, the water level balance barrel is arranged on the right side of the inner tank, and the upper and lower ends of the water level balance barrel are connected to each other through pipes, respectively. The inner tanks are connected, the sewage discharge ball valve is installed inside the cleaning port, the upper end of the water level probe is installed on the upper end surface of the water level balance bucket, and the lower end of the water level probe passes through the water level balance bucket and extends to the inside of the water level balance bucket. The pressure switch is set on the right side of the water level probe, and the pressure switch is installed on the upper surface of the water level balance barrel, the lower end of the metal hose is connected to the right side of the inner tank, and the upper end of the metal hose is connected to the right end of the elbow, so The elbow is assembled inside the heat exchanger, and the left end of the elbow is connected to the water flow inlet, the steam exhaust pipe is installed on the top of the left end surface of the liner, and the safety valve is installed on the upper end of the steam exhaust pipe. 7. A gas steam generator according to claim 6, characterized in that: the lower end of the metal hose is connected to the right side of the inner tank, and the upper end of the metal hose is connected to the right end of the elbow, the elbow The pipe is assembled inside the heat exchanger, and the left end of the elbow is connected to the water flow inlet. The steam exhaust pipe is installed on the upper part of the left end surface of the liner, and the safety valve is installed on the upper end of the steam exhaust pipe. The left end of the pipe and the water flow inlet input cold water. When the cold water passes through the bent pipe, it absorbs the residual heat of the flue gas in the heat exchanger, the temperature rises, and then flows into the inner tank through the metal hose, and the hot water in the inner tank It absorbs the heat of the flue gas passing through the fire pipe and vaporizes it, and discharges it through the steam exhaust pipe. When the pressure in the inner tank is high, the safety valve will automatically open to release the pressure, which has high safety. 8. A gas steam generator according to claim 6, characterized in that: the water level balance barrel is arranged on the right side of the inner tank, and the upper end and the lower end of the water level balance barrel are respectively connected to the inner tank through pipes, the The sewage discharge ball valve is installed inside the cleaning port, the upper end of the water level probe is installed on the upper end surface of the water level balance barrel, and the lower end of the water level probe passes through the water level balance barrel and extends to the inside of the water level balance barrel. The pressure switch is set on the water level probe. On the right side of the needle, and the pressure switch is installed on the upper end of the water level balance barrel. In actual use, since the upper and lower ends of the water level balance barrel are connected with the interior of the inner tank, the internal pressure condition of the water level balance barrel is the same as that of the inner tank. Through the water level probe And the pressure switch measures the water level and pressure in the water level balance pipe, so as to obtain the pressure and water level inside the inner tank. The sewage discharge ball valve is arranged at the lower end of the water level balance barrel, which is convenient for mechanical cleaning and sewage discharge. 9. A gas steam generator according to claim 1, characterized in that: in the scale cleaning assembly, the rotating shaft is assembled on the left end surface of the inner tank, and the right end of the rotating shaft is fixed on the left end surface of the scraper frame, so The scraper frame is assembled inside the inner tank and is attached to the inner wall of the inner tank, the ring sleeve is installed inside the water level balance barrel, the scraper brush is assembled on the ring side of the ring sleeve, and the magnet ring is fixed on the ring sleeve The lower end surface, the electromagnet is fixed on the upper end surface of the air pressure lifting rod, the air pressure lifting rod is assembled inside the hanging plate, the hanging plate is set on the lower side of the cleaning port, and the hanging plate is fixed at the lower end of the inner tank’s annular side, so The cleaning port is set on the lower end surface of the water level balance bucket. 10. A gas steam generator according to claim 9, characterized in that: the rotating shaft is assembled on the left end of the inner tank, and the right end of the rotating shaft is fixed on the left end of the scraper frame, and the scraper frame is assembled on the inner tank Inside, the scraper brush is assembled on the annular side of the ring sleeve, the magnet ring is fixed on the lower end surface of the ring sleeve, the electromagnet is fixed on the upper end surface of the air pressure lifting rod, and the air pressure lifting rod is assembled inside the suspension plate. The cleaning port is set on the lower end surface of the water level balance barrel, and the left end of the rotating shaft is equipped with a rubber sleeve on the ring side. In actual use, hold the rotating shaft and turn it. Clean the scale on the sewage discharge ball valve, then open the sewage discharge ball valve, make the air pressure lifting rod run, and connect the electromagnet to the external power supply, make the electromagnet magnetic, the air pressure lifting rod works to drive the electromagnet to pass through the sewage discharge ball valve and enter the water level balance Inside the barrel, the magnet ring is closely attached to the electromagnet under the action of magnetic attraction, so as to realize the connection between the air pressure lifting rod and the ring sleeve, and then the air pressure lifting rod drives the ring sleeve to move, and the ring sleeve moves to drive the scraper brush to move, thus balancing the water level The scale on the inner wall of the bucket is scraped off and discharged through the cleaning port, which is convenient for scale cleaning.