CN205002086U - A gas steam generator - Google Patents

Abstract

The utility model discloses a gas steam generator, including casing, collection petticoat pipe structure, locate collection petticoat pipe structure lower extreme and can lead to water and be heated and can produce the heat exchanger structure of steam, locate heat exchanger structure lower extreme and accessible combustion gas and produce thermal combustion system structure. The utility model discloses a set up aqueous vapor bitonic controller and come automatic regulation gas volume and inflow, thereby realize the heat transfer work that the most suitable burning operating mode satisfies required steam temperature with the best proportion, and aqueous vapor bitonic controller control water regulating valve adjusts in large-traffic water yield gets into the heat exchange pipeline when start and shut down, utilize expend with heat and contract with cold's principle to carry out garrulous dirty work, the phenomenon that effectively prevents scale deposit in the heat exchange pipeline produces, and mechanical type temperature controller and electronic type temperature controller that are equipped with in the heat exchanger can carry out multiple overheat protection to gas steam generator, still be equipped with the water level switch who prevents dry combustion method protection in the heat exchanger, use safe and reliable.

Description

A gas steam generator

technical field

The utility model relates to the technical field of steam generators, in particular to a gas steam generator.

Background technique

At present, a steam generator can quickly generate a large amount of high-temperature, normal-pressure steam, and is a heating device widely used in industry, commerce and daily life in the prior art. Taking industry as an example, steam is used to dye and finish fabrics in the textile printing and dyeing industry; taking business as an example, hotels, bath centers and catering industries use steam as a heat source to heat water or cook meals; taking daily life as an example, using steam Heating, etc.

The existing steam generators basically use gas heating. The gas steam generators commonly used in the market are relatively mechanical. There is no intelligent dual control of air intake and water intake, which leads to unsatisfactory combustion conditions and unsatisfactory steam output temperature. To the expected temperature, it consumes a lot of energy, the utilization rate of heat energy exchange is low, and it is not intelligent enough. Some even need to add water after heating for a period of time. The temperature of the water added is relatively low, making the gas steam generator unable to provide Steam has a serious impact on the user's use.

There are obvious deficiencies in safety protection, especially in water level control, anti-overheating and anti-dry burning control. There is basically no very sound safety protection. The machine is prone to deflagration and overheating, which can damage the machine at least, and endanger people's health and health. wealth.

Moreover, the pipes in the heat exchanger will generate scale over time. If the scale is not cleaned and discharged in time, the scale accumulated over time will affect the heat utilization rate, reduce the steam generation efficiency, and seriously block the pipes and fail to work normally.

Therefore, how to realize a simple structure, sufficient combustion of gas, high heat utilization rate, fast and stable steam generation, automatic control of gas flow and water flow, multiple anti-overheating protection, anti-dry protection, intelligent in the A gas-fired steam generator that cleans scale when starting up and shutting down is a technical problem to be solved urgently in the industry.

Utility model content

The main purpose of the utility model is to provide a gas steam generator, which aims to realize a simple structure, sufficient gas combustion, high heat utilization rate, fast and stable steam generation speed, automatic control of gas flow and water flow, and multiple Anti-overheating protection, with anti-dry protection, gas steam generator that can intelligently clean scale when starting and shutting down.

The utility model proposes a gas steam generator, which includes a shell, a smoke collecting hood structure arranged at the top of the casing, a heat exchanger structure arranged at the lower end of the smoke collecting hood structure, and a combustion system structure arranged at the lower end of the heat exchanger structure , the combustion system structure includes a combustion chamber for gas combustion, a burner arranged on the lower end of the combustion chamber, a gas pipeline for gas to enter the burner, and a gas regulating valve installed on the combustion pipeline and capable of controlling the flow rate of the gas; The heat exchanger structure includes a heat exchanger arranged at the upper end of the combustion chamber and equipped with a number of heat exchange pipes that can pass through water and generate steam after being heated, a water inlet pipe that allows water to enter the heat exchange pipe, and a water inlet pipe installed on the water inlet pipe. A water volume regulating valve that can control the proportion of water flow. The heat exchanger is equipped with a mechanical temperature controller and an electronic temperature controller so that multiple anti-overheating protections can be performed on the gas steam generator. The heat exchanger is also equipped with a Water level switch for anti-dry burning protection; there is also a water-air dual-adjustment controller that can control the operation of the gas regulating valve and the water volume regulating valve in the shell. The gas regulating valve is used to adjust the gas flow of the gas, and at the same time, the water quantity regulating valve can be controlled to adjust the water flow of the water, so as to realize the proper combustion condition of the gas steam generator and meet the heat exchange work of the required steam temperature; the gas steam generator is turned on When shutting down and shutting down, the water-air dual-adjustment controller controls the water volume regulating valve to adjust the large flow of water into the heat exchange pipe, so that the internal scale and cleaning of the heat exchange pipe can be carried out, and the phenomenon of scaling in the heat exchange pipe can be prevented; The smoke hood structure includes a smoke collection hood located on the upper end of the heat exchanger and connected to the combustion chamber, an exhaust fan located in the smoke collection hood that can quickly extract exhaust gas and provide secondary air in the combustion chamber to ensure full combustion of gas .

Preferably, there is also a wind pressure switch inside the housing that can detect the wind pressure of the external environment and control the gas steam generator to perform automatic protection operation when the wind pressure of the external environment is abnormal, so as to ensure the safe operation of the gas steam generator.

Preferably, the gas pipeline extends to the outside of the housing and is provided with a gas inlet.

Preferably, the water inlet pipe extends to the outside of the housing and is provided with a water inlet.

Preferably, the top of the casing is provided with a steam outlet communicating with the heat exchange pipe.

The gas steam generator of the utility model includes a shell, a smoke collecting hood structure arranged at the top of the shell, a heat exchanger structure arranged at the lower end of the smoke collecting hood structure and capable of passing water and generating steam when heated, and a heat exchanger structure arranged on the heat exchanger. The lower end of the structure is a combustion system structure that can generate heat by burning gas. Gas is delivered to the burner through the gas pipeline, and a gas regulating valve that can adjust the gas flow ratio is installed on the gas pipeline, and water is delivered to the heat exchange pipeline of the heat exchanger through the water inlet pipe, and the water flow can be adjusted on the water inlet pipe. Proportional water volume regulating valve. In this embodiment, by setting a water-air dual-adjustment controller, the water-air dual-adjustment controller can be intelligent and automatically adjust the water-air ratio according to the ambient temperature, water source temperature, and gas calorific value, thereby realizing automation and intelligence. Adjust the optimal ratio of gas and water into the gas steam generator to achieve the most suitable combustion industry and meet the heat exchange work of the required steam temperature. The structure is simple, and the ratio of water and gas can be automatically controlled to reduce energy consumption. , improve the heat exchange rate, ensure that the gas can be fully combusted, and the heat generated by the combustion gas is maximized for heat exchange, and the water in the heat exchange pipe is quickly heated to a vaporized state and can meet the required steam temperature. Discharged to the steam outlet, the heat utilization rate is high, the steam generation speed is fast and stable, avoiding the traditional need to add cold water halfway and the temperature of the water added is low, so that the gas steam generator cannot provide steam for a long time, affecting the user's safety Normal use.

Moreover, when the gas steam generator is turned on, the water-air dual-adjustment controller can also control the water volume regulating valve to adjust the large flow of water entering the heat exchange pipe. The high-pressure, high-speed, large-flow cold water can clean the inside of the heat exchange pipe and remove scale in the heat exchange pipe. Smash and discharge out of the gas steam generator; when shutting down, the water-air dual-adjustment controller will also control the water volume regulating valve to adjust the large flow of water into the heat exchange pipe, and the large flow of cold water can break the scale in the heat exchange pipe and remove it. Exhaust to the outside of the gas steam generator. It can be seen that the gas-fired steam generator of this embodiment uses the principle of physical thermal expansion and contraction to carry out scaling work, which can effectively prevent scaling in the heat exchange pipes and prevent scale from affecting the normal use of the heat exchanger and the steam Generate efficiency.

The utility model has very sound safety protection. The heat exchanger of the heat exchanger structure is equipped with a mechanical temperature controller and an electronic temperature controller. protection, safe and reliable. And the heat exchanger is also equipped with a water level switch with anti-dry protection. The water level switch can ensure that the heat exchange pipe is kept in a state of water when the gas steam generator is working. Once the water level is too low, the gas steam generator will automatically protect it. program, to avoid deflagration and overheating due to dry burning, which may damage the machine at the slightest, and endanger people's health and wealth at the worst.

Therefore, the gas steam generator of the utility model has the advantages of simple structure, sufficient gas combustion, high heat utilization rate, fast and stable steam generation speed, automatic control of gas flow and water flow, and intelligent scale removal during startup and shutdown. It has beneficial effects such as cleaning, multiple overheating protection, and dry burning protection, has broad market prospects, and is worthy of extensive promotion and application.

Description of drawings

Fig. 1 is a schematic structural diagram of the working principle of an embodiment of a gas steam generator of the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1, an embodiment of a gas steam generator of the present utility model is proposed, including a housing 100, a smoke collector which is arranged on the inner top of the housing 100 and can quickly extract waste gas and accelerate the air flow velocity in the housing 100. The hood structure, the heat exchanger structure arranged at the lower end of the smoke collecting hood structure and capable of passing water and generating steam when heated, and the combustion system structure arranged at the lower end of the heat exchanger structure and capable of generating heat by burning gas. The gas steam generator of the present utility model has a simple structure, concise and clear layout of various parts in the casing 100, sufficient gas combustion, low energy consumption, high heat exchange rate, fast and stable steam generation, and the gas steam generation of this embodiment The device is suitable for various places that need steam, such as industrial use of steam for dyeing and finishing of fabrics, commercial hotels, bath centers and catering industries use steam as a heat source to heat water or cook meals, and use steam in daily life Heating, etc., a wide range of applications.

The structure of the combustion system includes a combustion chamber 401 for gas combustion, a burner 402 arranged on the lower end of the combustion chamber 401, a gas pipeline 403 for gas to enter the burner 402, and a gas flow rate control valve installed on the combustion pipeline. The gas regulating valve 404 and the gas pipeline 403 extend to the outside of the casing 100 and are provided with a gas inlet 405 . The gas enters the gas pipeline 403 through the gas inlet 405. Under the regulation of the gas regulating valve 404, a certain flow rate of gas is transported to the burner 402 through the gas pipeline 403. Under the action of the burner 402, the gas and air flow in the combustion chamber 401 Mix well and burn completely to generate heat.

The heat exchanger structure includes a heat exchanger 301 arranged at the upper end of the combustion chamber 401, a water inlet pipe 303 through which water can enter the inside of the heat exchanger 301, a water volume regulating valve 304 arranged on the water inlet pipe 303 and capable of controlling the proportion of water flow, and heat The exchanger 301 is provided with a number of heat exchange pipes 302 that can pass water and generate steam after being heated. The water inlet pipe 303 that passes water to the heat exchange pipes 302 extends to the outside of the housing 100 and is provided with a water inlet 305. The top of the housing 100 A steam outlet 700 communicating with the heat exchange pipe 302 is provided. Cold water enters the water inlet pipe 303 from the water inlet 305, and under the regulation of the water volume regulating valve 304, a certain flow of water is delivered to the inside of the heat exchange pipe 302 in the heat exchanger 301 through the water inlet pipe 303, and the heat generated by the combustion system structure is passed through the heat The exchanger 301 performs heat energy exchange, and can quickly heat the cold water inside the heat exchange pipe 302 to a vaporized state to form steam and discharge it from the steam outlet 700 .

Existing gas-fired steam generators operate relatively mechanically, without intelligent dual control of air intake and water intake, resulting in unsatisfactory combustion conditions, steam output temperature not reaching the expected temperature, high energy consumption, and low utilization rate of heat exchange , Not smart enough, some even need to add water after heating for a period of time, the temperature of the added water is low, so that the gas steam generator cannot provide steam for a long time, which has a serious impact on the use of users. In order to solve the existing technical problems, a rapid gas steam generator of the utility model is proposed.

The gas steam generator of the present utility model also includes a water-air dual-adjustment controller 500 disposed in the casing 100 and capable of controlling the operation of the gas regulating valve 404 and the water quantity regulating valve 304 . The water and gas dual adjustment controller 500 can control the gas regulating valve 404 to adjust the gas flow of gas according to the ambient temperature, water source temperature and gas calorific value, and at the same time control the water volume regulating valve 304 to adjust the water flow of water, so as to realize the gas steam generator The proper combustion conditions can meet the heat exchange work of the required steam temperature. When the ambient temperature is high, the temperature of the water source may also be high. At this time, the water-gas dual-adjustment controller 500 can control the gas regulating valve 404 to adjust the gas with a small flow rate, and the water-gas dual-regulation controller 500 controls the water volume regulating valve 304 To adjust a large flow of water, less gas can quickly heat a large amount of water to a vaporized state and form steam; on the contrary, if the ambient temperature is low and the water source temperature is also very low, it is necessary to adjust a large flow of gas to burn and A large amount of heat is generated, and the water flow needs to be relatively small to effectively ensure the steam output speed and the required steam temperature; or if the calorific value of the gas is low, the water flow needs to be correspondingly reduced, otherwise the combustion calorific value is too high High water flow rate can be adjusted to fully realize the exchange of two heat energies, quickly heat the cold water to vaporization state and form steam to be discharged from the steam outlet 700. The utility model has a simple structure, and can automatically control and adjust the water-gas ratio through the water-gas dual-adjustment controller 500, which reduces energy consumption, improves the heat exchange rate, and ensures that the gas can be fully gas-fired, and the heat generated by burning gas can be maximized. Heat exchange, the water in the heat exchange pipe 302 is quickly heated to a vaporized state to meet the required steam temperature and discharged to the steam outlet 700, with high heat utilization rate and fast and stable steam generation.

The fume collecting hood structure includes a fume collecting hood 201 arranged on the upper end of the heat exchanger 301 and communicating with the combustion chamber 401 , and an exhaust fan 202 arranged in the fume collecting hood 201 . The exhaust fan 202 can quickly extract the waste gas produced by the combustion of gas in the combustion chamber 401 and discharge it to the external environment. At the same time, the operation of the exhaust fan 202 can also drive the air flow in the housing 100 to provide secondary air for the combustion chamber 401. Thereby, it can be ensured that gas and air are fully mixed and completely combusted, effectively improving the combustion rate of gas, improving the heat generation rate, and further improving the steam generation efficiency of the utility model, and avoiding the harmful gas generated by insufficient combustion of gas from polluting the environment or harming human health cause harm.

Normally, when the gas-fired steam generator is working, water in the heat exchange pipe 302 is heated and converted into a vaporized state, and scale often occurs and accumulates on the inner wall of the heat exchange pipe 302 . If the scale is not cleaned and discharged in time, the scale accumulated over time will affect the heat exchange rate, reduce the utilization rate of heat energy and reduce the steam generation efficiency, and seriously block the pipeline and fail to work normally, greatly affecting the working efficiency of the gas steam generator. When the gas steam generator in this embodiment is turned on and off, high-pressure, high-speed, large-flow water enters the heat exchange pipe 302, and the internal scale and cleaning of the heat exchange pipe 302 are carried out, so as to avoid scaling on the inner wall of the heat exchange pipe 302. Phenomenon. When starting up, the water-air dual-adjustment controller 500 controls the water volume regulating valve 304 to adjust the large-flow water flow into the heat exchange pipe 302. The high-pressure, high-speed, large-flow cold water can clean the inside of the heat exchange pipe 302 and smash the scale in the heat exchange pipe 302. And discharged out of the gas steam generator; when the machine is turned off, the water-air dual-adjustment controller 500 will also control the water volume regulating valve 304 to adjust the large flow of water entering the heat exchange pipe 302, and the thermal expansion and contraction between the cold water and the heat exchange pipe 302, It can help the scale to break away from the inner wall of the heat exchange pipe 302, and the large flow of cold water can break the scale and discharge it out of the gas steam generator. It can be seen that the gas steam generator in this embodiment controls the water volume regulating valve 304 through the water-gas dual-adjustment controller 500 to adjust the large flow of water into the heat exchange pipe 302, and utilizes the principle of thermal expansion and contraction to cool the inside of the heat exchange pipe 302. Scaling and cleaning can effectively prevent scaling in the heat exchange pipe 302 and prevent scale from affecting the normal use of the heat exchanger 301 and the efficiency of steam generation.

The gas steam generator of the utility model also has very sound safety protection, is safe and reliable to use, and effectively prolongs the service life of the gas steam generator. The heat exchanger 301 of the heat exchanger structure is equipped with a mechanical temperature controller 306 and an electronic temperature controller 307. The electronic temperature controller 307 is sensitive to temperature control, which can effectively prevent the heat exchanger structure from being damaged due to excessive temperature. , while the mechanical temperature controller 306 has simple structure, long service life, easy installation, high reliability, and wide adjustable temperature range. Therefore, the configuration of dual temperature controllers can provide multiple anti-overheating protection for the gas steam generator, which is safe Reliable and durable. And the heat exchanger 301 is also provided with a water level switch 308 with anti-dry protection. The water level switch 308 can ensure that when the gas steam generator is working, the heat exchange pipe 302 is kept in a state of carrying water. Once the water level is sensed to be too low, The gas steam generator will automatically carry out the protection program to avoid deflagration and overheating due to dry burning, which will damage the machine if it is light, and endanger people's health and wealth if it is serious. Moreover, the housing 100 is also provided with a wind pressure switch 600 that can detect the wind pressure of the external environment. When the wind pressure of the external environment is abnormal, the wind pressure switch 600 can control the gas steam generator to perform automatic protection operations to ensure the operation of the gas steam generator. Safety, avoiding the danger of gas leakage due to the flame in the combustion chamber 401 being blown out by the strong wind while the gas pipeline 403 continues to deliver gas to the burner 402, the structure is simple, the use safety performance is good, and the use is safe and reliable.

In summary, the gas steam generator of the present utility model is automatically and intelligently controlled by setting the water-gas dual-adjustment controller 500 to simultaneously control the gas regulating valve 404 and the water volume regulating valve 304 according to the ambient temperature, water source temperature and combustion calorific value. Adjust the amount of gas and water into the gas steam generator to achieve the most suitable combustion conditions with the best ratio to meet the heat exchange work of the required steam temperature. The structure is simple and can be automatically controlled to adjust the water-gas ratio, reducing Reduce energy consumption, improve the heat exchange rate, ensure that the gas can be fully combusted, and the heat generated by the combustion gas is maximized for heat exchange, and the water in the heat exchange pipe 302 is quickly heated to a vaporized state and can meet the required steam temperature And discharge to the steam outlet 700, the heat utilization rate is high, and the steam generation speed is fast and stable; and when the gas steam generator is turned on and off, the water-gas dual-adjustment controller 500 controls the water volume regulating valve 304 to adjust the large flow of water entering the heat exchange In the pipeline 302, the work of detritus and cleaning inside the heat exchange pipeline 302 can be carried out, thereby preventing the phenomenon of fouling in the heat exchange pipeline 302; and the utility model also has very sound safety protection, and the heat exchange of the heat exchanger structure The device 301 is equipped with a mechanical temperature controller 306 and an electronic temperature controller 307. The arrangement of dual temperature controllers can provide multiple protections against overheating for the gas steam generator, which is safe and reliable, and the heat exchanger 301 is also equipped with The water level switch 308 with anti-dry protection, the water level switch 308 can ensure that when the gas steam generator is working, the heat exchange pipe 302 is kept in a state of water, once the water level is too low, the gas steam generator will automatically perform a protection program to avoid Deflagration and overheating occur due to dry burning, and there is a wind pressure switch 600 inside the housing 100. The wind pressure switch 600 can detect the wind pressure of the external environment at any time and can control the gas steam generator when the wind pressure of the external environment is abnormal. The automatic protection operation ensures the safe operation of the gas steam generator. The overall structure is simple, the layout is simple, the use is safe and reliable, and the service life of the gas steam generator is effectively extended. Therefore, the gas steam generator of the utility model has the advantages of simple structure, sufficient gas combustion, high heat utilization rate, fast and stable steam generation speed, automatic control of gas flow and water flow, and intelligent scale removal during startup and shutdown. Cleaning, with multiple anti-overheating protections, with anti-dry protection, safe and reliable use, long service life and other beneficial effects, has broad market prospects, and is worthy of widespread promotion and application.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (5)

1. A gas-fired steam generator, characterized in that it comprises a housing, a smoke collection hood structure located at the top of the housing, a heat exchanger structure located at the lower end of the smoke collection hood structure, a heat exchanger located at the heat exchanger The combustion system structure at the lower end of the exchanger structure, the combustion system structure includes a combustion chamber for combustion of gas, a burner arranged on the lower end surface of the combustion chamber, a gas pipeline for the gas to enter the burner, A gas regulating valve on the combustion pipeline that can control the flow ratio of the gas; the heat exchanger structure includes a number of valves that can pass through water and generate steam after being heated. The heat exchanger of the heat exchange pipe, the water inlet pipe that allows the water to enter the heat exchange pipe, the water volume regulating valve that is arranged on the water inlet pipe and can control the water flow ratio, the heat exchanger A mechanical temperature controller and an electronic temperature controller are installed inside so that multiple overheating protections can be performed on the gas steam generator, and a water level switch with anti-dry protection is also installed inside the heat exchanger; the shell The body is also equipped with a water-gas dual-adjustment controller that can control the operation of the gas regulating valve and the water volume regulating valve. Adjusting the valve to adjust the gas flow of the gas and at the same time controlling the water volume regulating valve to adjust the water flow of the water so as to achieve the proper combustion conditions of the gas steam generator and meet the heat exchange of the required steam temperature Work; when the gas steam generator is turned on and off, the water-gas dual-adjustment controller controls the water volume regulating valve to adjust the large flow of water into the heat exchange pipe, so that the internal scale of the heat exchange pipe can be removed. The cleaning work can prevent fouling in the heat exchange pipes; In the fume collecting hood, exhaust gas can be extracted quickly and secondary air can be provided in the combustion chamber so as to ensure the complete combustion of the gas. 2. A gas-steam generator according to claim 1, characterized in that, there is also a device in the housing that can detect the wind pressure of the external environment and can control the gas steam when the wind pressure of the external environment is abnormal. The generator performs an automatic protection operation to ensure that the gas steam generator operates a safe wind pressure switch. 3. A gas steam generator according to claim 1 or 2, characterized in that the gas pipeline extends to the outside of the housing and is provided with a gas inlet. 4. A gas-fired steam generator according to claim 3, wherein the water inlet pipe extends to the outside of the housing and is provided with a water inlet. 5. A gas-fired steam generator according to claim 4, characterized in that, the top of the housing is provided with a steam outlet communicating with the heat exchange pipe.