Ring pipe straight-flow type natural gas steam generator

Abstract

The utility model relates to the technical field of heat exchange equipment, and discloses an annular pipe straight-flow type natural gas steam generator which comprises a body annular pipe barrel, a mosquito-repellent incense-shaped coil pipe, a double-layer spiral coil pipe, a body smoke box and a natural gas burner connector. The natural gas burner is installed through the natural gas burner connector, the natural gas burner works and burns natural gas to generate heat to heat the mosquito-repellent incense-shaped coil pipe and the double-layer spiral coil pipe, and then the mosquito-repellent incense-shaped coil pipe and the double-layer spiral coil pipe heat water into steam which enters the steam outlet. Compared with fuel combustion, direct natural gas combustion in the whole process is higher in heat efficiency, the amount of waste gas generated by natural gas combustion is relatively small, environmental pollution is small, and the method is worthy of wide application and popularization.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, specifically to a loop-type direct-flow natural gas steam generator. Background Technology

[0002] Existing steam production technology generates steam by burning fuel in a boiler. However, this method of fuel combustion is inefficient, produces a large amount of flue gas, does not meet environmental protection requirements, and has a large overall size, requires a large area, and is time-consuming and labor-intensive to transport and install. Furthermore, it cannot automatically control the start and stop of heating, making it impossible to freely adjust the boiler load and posing significant safety hazards. Utility Model Content

[0003] The purpose of this invention is to provide a loop-type direct-flow natural gas steam generator to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides a loop-type direct-flow natural gas steam generator, comprising:

[0005] The main body ring tube has a water inlet and a steam outlet arranged sequentially along the water flow direction.

[0006] A mosquito coil-shaped coil is disposed inside the main body ring tube, and its feed end is connected to the water inlet.

[0007] A double-layer spiral coil is provided inside the main body ring tube. The discharge end of the mosquito coil is connected to the inlet end of the double-layer spiral coil, and the discharge end of the double-layer spiral coil is connected to the steam outlet.

[0008] The main body smoke box is located at one end of the main body annular tube near the water inlet. One end of the main body smoke box is connected to the main body annular tube, and the other end is provided with a smoke outlet.

[0009] A natural gas burner interface is provided at the end of the main body annular tube that is away from the main body smoke box.

[0010] Preferably, the mosquito coil includes at least three layers of mosquito coil tubes, a connecting strip for fixing the mosquito coil tubes, a pressure plate disposed on the outer ring of the mosquito coil tubes, and a support ring disposed between the mosquito coil and the main body smoke box. The pressure plate connects adjacent mosquito coil tubes, and adjacent mosquito coil tubes are connected in series.

[0011] Preferably, the mosquito coil tube has five layers, with the diameter of the three layers closest to the water inlet being smaller than the diameter of the other two layers, and the diameter of the other two layers being the same as the diameter of the double-layer spiral coil.

[0012] Preferably, the mosquito coil tube is filled with a first refractory mud, and the flue gas generated by the natural gas burner passes through the coil area of ​​the mosquito coil tube.

[0013] Preferably, the main body annular tube includes an annular tube shell, a water inlet / sewage outlet pipe disposed at the water inlet, a steam outlet pipe disposed at the steam outlet, a support leg disposed at the bottom of the annular tube shell, and a furnace thermocouple disposed on the annular tube shell, wherein the furnace thermocouple is used to detect the temperature inside the annular tube shell.

[0014] Preferably, the water inlet / sewage discharge pipe includes a water inlet / sewage discharge pipe connected to the water inlet, a docking flange and a sewage discharge flange respectively disposed at both ends of the water inlet / sewage discharge pipe, and a water inlet pipe disposed on the water inlet / sewage discharge pipe. The docking flange is connected to the water inlet, the sewage discharge flange is connected to an external sewage discharge pipe, and the water inlet pipe is connected to an external water inlet device.

[0015] Preferably, the steam outlet pipeline includes a steam outlet pipe connected to the steam outlet, and a pressure gauge interface, a pressure controller interface, a pressure transmitter, a steam thermocouple interface, and a safety valve interface are sequentially arranged on the steam outlet pipe along the steam outlet direction. The pressure gauge interface, the pressure controller interface, the pressure transmitter, the steam thermocouple interface, and the safety valve interface are respectively used to connect the pressure gauge, the pressure controller, the pressure transmitter, the steam thermocouple, and the safety valve.

[0016] Preferably, the inner wall of the annular tube shell is filled with a second refractory mortar.

[0017] Preferably, the second refractory mortar is provided with a plurality of claw studs.

[0018] Preferably, the bottom of the main smoke box is provided with a condensate outlet.

[0019] The beneficial effects of this utility model are as follows: by installing a natural gas burner through the natural gas burner interface, the natural gas burner burns natural gas to generate heat to heat the mosquito coil and the double-layer spiral coil. Then, the mosquito coil and the double-layer spiral coil heat water to turn it into steam, which is then sent to the steam outlet. The whole process of directly burning natural gas has higher thermal efficiency than burning fuel, and the amount of exhaust gas produced by natural gas combustion is relatively small, which also causes less environmental pollution. It is worth promoting and applying widely.

[0020] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of a loop-type direct-flow natural gas steam generator according to one embodiment of the present invention is shown;

[0023] Figure 2 This utility model is shown Figure 1 Sectional view of plane AA;

[0024] Figure 3 This invention provides a schematic diagram of the winding process of mosquito coil tubes SP1-SP2 according to one embodiment of the present invention.

[0025] Figure 4 This invention provides a schematic diagram of the winding process of mosquito coil tubes SP3-SP5 according to one embodiment of the present invention.

[0026] Figure 5 An assembly diagram of mosquito coil tubes SP1-SP2 according to one embodiment of the present invention is shown;

[0027] Figure 6 An assembly diagram of mosquito coil tubes SP3-SP5 according to one embodiment of the present invention is shown;

[0028] Figure 7 This diagram shows an assembly and forming diagram of a mosquito coil-shaped tube according to one embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the medium flow direction according to one embodiment of the present invention is shown. Detailed Implementation

[0030] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0031] Please refer to Figures 1-8This embodiment discloses a ring-tube direct-flow natural gas steam generator, including a main ring tube 1, a mosquito coil 2, a double-layer spiral coil 3, a main smoke box 4, and a natural gas burner interface 5. The main ring tube 1 has a water inlet and a steam outlet 102 arranged sequentially along the water flow direction. The mosquito coil 2 is located inside the main ring tube 1, with its feed end connected to the water inlet. The double-layer spiral coil 3 is located inside the main ring tube 1, with its discharge end connected to the feed end of the double-layer spiral coil 3 and its discharge end connected to the steam outlet 102. The main smoke box 4 is located at the end of the main ring tube 1 near the water inlet, with one end connected to the main ring tube 1 and the other end having a smoke outlet 41. The natural gas burner interface 5 is located at the end of the main ring tube 1 away from the main smoke box 4.

[0032] In this embodiment, the natural gas burner interface 5 is connected to a natural gas burner. Natural gas is a clean energy source, and its combustion products cause less environmental pollution, making it more environmentally friendly than fuel combustion. Moreover, natural gas has a higher thermal efficiency than fuel combustion. The coil and spiral configuration of the mosquito coil 2 and the double-layer spiral coil 3 can reduce the size of the steam generator while ensuring heat exchange efficiency, thereby reducing the floor space required.

[0033] The heat generated by the combustion of natural gas by the natural gas burner enters the main body ring tube 1 from the natural gas burner interface 5 and exchanges heat with the mosquito coil 2 and the double-layer spiral coil 3. The flue gas generated after heat exchange finally flows out from the flue gas outlet 41.

[0034] Please refer to Figures 2-7 The mosquito coil 2 includes at least three layers of mosquito coil tubes 21, a connecting strip 22 for fixing the mosquito coil tubes 21, a pressure plate 23 disposed on the outer ring of the mosquito coil tubes 21, and a support ring 24 disposed between the mosquito coil coil 2 and the main body smoke box 4. The pressure plate 23 connects adjacent mosquito coil tubes 21, and the adjacent mosquito coil tubes 21 are connected in series.

[0035] Preferably, the mosquito coil tube 21 has five layers. The diameter of the three layers of mosquito coil tube 21 closest to the water inlet is smaller than that of the other two layers of mosquito coil tube 21, and the diameter of the other two layers of mosquito coil tube 21 is the same as that of the double-layer spiral coil tube 3.

[0036] Specifically, the five mosquito coil tubes 21 are connected in series. The five mosquito coil tubes 21 are SP1-SP5. The diameter of SP1 and SP2 is 25cm, and the diameter of SP3-SP5 is 18cm. The double-layer spiral plate 3 is made by winding two tubes with a diameter of 25cm in a counterclockwise spiral 15 times (starting from the bottom in the top view). When water enters the large-diameter mosquito coil tube 21 from the small-diameter mosquito coil tube 21, the flow rate will decrease, thereby increasing the heat exchange time of the water and ensuring the efficiency of water vapor.

[0037] Preferably, the mosquito coil tube 21 is filled with a first refractory mortar 201, and the hot gas generated by the natural gas burner passes through the coil area of ​​the mosquito coil tube 21. The first refractory mortar 201 can provide insulation and reduce heat loss.

[0038] Please continue to refer to Figure 1 The main body ring tube 1 includes a ring tube shell 11, a water inlet / sewage outlet pipe 12 located at the water inlet, a steam outlet pipe 13 located at the steam outlet 102, a support leg 14 located at the bottom of the ring tube shell 11, and a furnace thermocouple 15 located on the ring tube shell 11. The furnace thermocouple 15 is used to detect the temperature inside the ring tube shell 11.

[0039] Preferably, the water inlet / sewage discharge pipe 12 includes a water inlet / sewage discharge pipe 121 connected to a water inlet, a connecting flange 122 and a sewage discharge flange 123 respectively disposed at both ends of the water inlet / sewage discharge pipe 121, and a water inlet pipe 124 disposed on the water inlet / sewage discharge pipe 121. The connecting flange 122 is connected to the water inlet, the sewage discharge flange 123 is connected to an external sewage discharge pipe, and the water inlet pipe 124 is connected to an external water inlet device. A check valve is connected between the water inlet pipe 124 and the water inlet device to prevent water backflow and to prevent sewage from entering the water inlet device from the water inlet pipe 124 during sewage discharge.

[0040] Preferably, the steam outlet pipe 13 includes a steam outlet pipe 131 connected to the steam outlet 102. The steam outlet pipe 131 is provided with a pressure gauge interface 132, a pressure controller interface 133, a pressure transmitter 134, a steam thermocouple interface 135, and a safety valve interface 136 in sequence along the steam outlet direction. The pressure gauge interface 132, the pressure controller interface 133, the pressure transmitter 134, the steam thermocouple interface 135, and the safety valve interface 136 are respectively used to connect the pressure gauge, the pressure controller, the pressure transmitter, the steam thermocouple, and the safety valve.

[0041] The pressure gauge monitors and displays the real-time steam pressure. The safety valve, pressure controller (mechanical control), and pressure transmitter control (electrical signal control) of the steam generator load achieve fully automatic load regulation. When steam overpressure occurs due to external steam supply failure or other abnormalities, the pressure controller (mechanical control) and pressure transmitter (electrical signal control) immediately cut off the power to the steam generator, simultaneously issuing an audible and visual alarm. During the control and protection actions, the safety valve opens to release steam and relieve pressure. The steam thermocouple monitors and displays the real-time steam temperature signal; if the steam temperature exceeds the limit, the power to the steam generator immediately cuts off. The furnace thermocouple 15 monitors and displays the real-time furnace temperature signal; if the furnace temperature exceeds the limit, the power to the furnace immediately cuts off. This multi-layered control and protection design provides a high level of automation and comprehensive safety protection devices, making the furnace easy to operate and allowing for real-time monitoring of the steam generator's operating status, ensuring safe and reliable operation.

[0042] The inner wall of the annular tube shell 11 is filled with a second refractory mortar 16, which provides thermal insulation for the annular tube shell 11. Multiple claw studs 17 are provided on the second refractory mortar 16 to secure it and ensure its stability. A lifting lug 18 is also provided at the top of the annular tube shell 11 for hoisting during transportation or installation.

[0043] The bottom of the main smoke box 4 is provided with a condensate outlet 42, from which the condensate after heat exchange flows out.

[0044] In summary, this embodiment uses a natural gas burner installed at the natural gas burner interface 5. The natural gas burner burns natural gas to generate heat, which heats the mosquito coil 2 and the double-layer spiral coil 3. Then, the mosquito coil 2 and the double-layer spiral coil 3 heat water to turn it into steam, which then goes to the steam outlet 102. The entire process of directly burning natural gas has higher thermal efficiency than burning fuel, and the amount of exhaust gas produced by natural gas combustion is relatively small, resulting in less environmental pollution. It is worthy of widespread promotion and application.

[0045] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention. It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe the various possible combinations.

[0046] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A loop-type direct-flow natural gas steam generator, characterized in that, include: The main body ring tube has a water inlet and a steam outlet arranged sequentially along the water flow direction. A mosquito coil-shaped coil is disposed inside the main body ring tube, and its feed end is connected to the water inlet. A double-layer spiral coil is provided inside the main body ring tube. The discharge end of the mosquito coil is connected to the inlet end of the double-layer spiral coil, and the discharge end of the double-layer spiral coil is connected to the steam outlet. The main body smoke box is located at one end of the main body annular tube near the water inlet. One end of the main body smoke box is connected to the main body annular tube, and the other end is provided with a smoke outlet. A natural gas burner interface is provided at the end of the main body annular tube that is away from the main body flue box. The main body ring tube includes a ring tube shell, a water inlet / sewage outlet pipe disposed at the water inlet, a steam outlet pipe disposed at the steam outlet, a support leg disposed at the bottom of the ring tube shell, and a furnace thermocouple disposed on the ring tube shell. The furnace thermocouple is used to detect the temperature inside the ring tube shell. The steam outlet pipeline includes a steam outlet pipe connected to the steam outlet. The steam outlet pipe is provided with a pressure gauge interface, a pressure controller interface, a pressure transmitter, a steam thermocouple interface, and a safety valve interface in sequence along the steam outlet direction. The pressure gauge interface, the pressure controller interface, the pressure transmitter, the steam thermocouple interface, and the safety valve interface are respectively used to connect the pressure gauge, the pressure controller, the pressure transmitter, the steam thermocouple, and the safety valve.

2. The loop-type direct-flow natural gas steam generator according to claim 1, characterized in that, The mosquito coil includes at least three layers of mosquito coil tubes, a connecting strip for fixing the mosquito coil tubes, a pressure plate disposed on the outer ring of the mosquito coil tubes, and a support ring disposed between the mosquito coil and the main body smoke box. The pressure plate connects adjacent mosquito coil tubes, and adjacent mosquito coil tubes are connected in series end to end.

3. The loop-type direct-flow natural gas steam generator according to claim 2, characterized in that, The mosquito coil tube has five layers. The diameter of the three layers of mosquito coil tubes closest to the water inlet is smaller than that of the other two layers. The diameter of the other two layers of mosquito coil tubes is the same as that of the double-layer spiral coil tube.

4. The loop-type direct-flow natural gas steam generator according to claim 2, characterized in that, The mosquito coil tube is filled with a first refractory mud, and the hot gas generated by the natural gas burner passes through the coil area of ​​the mosquito coil tube.

5. The loop-type direct-flow natural gas steam generator according to claim 1, characterized in that, The water inlet / sewage discharge pipeline includes a water inlet / sewage discharge pipe connected to the water inlet, a docking flange and a sewage discharge flange respectively disposed at both ends of the water inlet / sewage discharge pipe, and a water inlet pipe disposed on the water inlet / sewage discharge pipe. The docking flange is connected to the water inlet, the sewage discharge flange is connected to an external sewage discharge pipeline, and the water inlet pipe is connected to an external water inlet device.

6. The loop-type direct-flow natural gas steam generator according to claim 1, characterized in that, The inner wall of the annular tube shell is filled with a second refractory mortar.

7. The loop-type direct-flow natural gas steam generator according to claim 6, characterized in that, The second refractory mortar is provided with multiple claw studs.

8. The loop-type direct-flow natural gas steam generator according to claim 1, characterized in that, The bottom of the main body smoke box is provided with a condensate outlet.

Images