Coil-type steam generator

Abstract

The present invention relates to the technical field of steam generators, and discloses a coil-type steam generator, including a combustion chamber, a saturated steam chamber, a first-order preheating device and a second-order preheating device, wherein the saturated steam chamber, the first-order preheating device and the second-order preheating device are sequentially arranged above the combustion chamber from right to left, a combustion device is arranged on the left side of the combustion chamber, and the combustion chamber also includes a steam generator, and the right side of the inner wall of the steam generator is fixedly connected with an inner spiral coil and an outer spiral coil. By improving the spirally arranged saturated steam generating tube, the steam mixed gas passes through the first hollow ball and the second hollow ball in the connecting tube, and the energy is released to form an expansion and contraction effect, so that the water vapor in the mixed gas will contact the inner wall of the first hollow ball, the connecting tube and the second hollow ball, and with the use of waste heat, the heat can be conducted in the saturated steam generating tube, and the dispersed water vapor can be quickly evaporated into steam.

Description

Technical Field

[0001] The invention relates to the technical field of steam generators, in particular to a coil-type steam generator. Background Art

[0002] A steam generator is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam.

[0003] As the demand for steam in production increases, its volume and the amount of steam produced will also increase. In order to increase the amount of steam output, it is common to increase the combustion quality and increase the temperature to achieve the amount of steam generation. However, this method has disadvantages. Since water enters the combustion chamber at high pressure, the water flow rate is faster, the thermal contact time is shorter, and the amount of steam generated cannot reach the amount of steam converted by internal heat. In this way, the steam is not saturated, and the heat utilization rate of this process is extremely low, and the heat loss rate is high, resulting in increased costs and increased environmental pollution. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a coil-type steam generator, which solves the problems raised by the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a coil-type steamer, comprising a combustion chamber, a saturated steam chamber, a first-stage preheating device and a second-stage preheating device, wherein the saturated steam chamber, the first-stage preheating device and the second-stage preheating device are sequentially arranged above the combustion chamber from right to left, and a combustion device is arranged on the left side of the combustion chamber;

[0006] The combustion chamber also includes a steam generator, an inner spiral coil and an outer spiral coil are fixedly connected to the right side of the inner wall of the steam generator, a middle spiral coil is fixedly connected to the left side of the inner wall of the steam generator, a water inlet end and a water outlet end of the middle spiral coil are respectively connected to the inner spiral coil and the outer spiral coil, the right end of the combustion device is located on the left side of the inner cavity of the inner spiral coil, one end of the inner spiral coil is provided with a flow control system, one end of the flow control system passes through the steam generator and the combustion chamber and extends to the outside, one end of the outer spiral coil is connected to a steam-water mixing pipe, one end of the steam-water mixing pipe passes through one side of the inner wall of the steam generator and one side of the inner wall of the combustion chamber, the top of the steam generator is connected to a heat conduction pipe, and the top of the heat conduction pipe is connected to the inner cavity of the saturated steam chamber.

[0007] In the coil-type steam generator described in the present invention, preferably, the combustion device includes a mounting baffle, a gas supply pipe is inserted through the center position of the mounting baffle, and a flame collecting head is fixedly connected to the right end of the gas supply pipe.

[0008] In the coil-type steam generator described in the present invention, preferably, a heat conduction pipe and the steam-water mixing pipe are penetrated on the right side of the bottom of the inner wall of the saturated steam chamber, a spiral empty pipe is sleeved in the saturated steam chamber, a saturated steam generating pipe is sleeved in the spiral empty pipe, the spiral empty pipe is connected with the heat conduction pipe, the steam-water mixing pipe is connected with the saturated steam generating pipe, and the air outlet end of the saturated steam generating pipe penetrates the top of the inner wall of the saturated steam chamber and extends to the outside thereof.

[0009] In the coil-type steam generator described in the present invention, preferably, the first-stage preheating device includes a circular heat-collecting sleeve, a spiral coil is arranged inside the circular heat-collecting sleeve, the spiral coil is provided with a spiral waste heat chamber, an external water pipe is arranged on the top of the spiral coil, one end of the external water pipe extends to the top of the circular heat-collecting sleeve, and an exhaust gas filtering device is arranged on the left side of the circular heat-collecting sleeve.

[0010] In the coil-type steamer described in the present invention, preferably, the second-stage preheating device includes a hollow circular sleeve, a superheater is connected to the inside of the hollow circular sleeve, one end of the superheater is connected to the inner cavity of the spiral waste heat chamber, and the water outlet end of the superheater is connected to the flow control system.

[0011] In the coil-type steamer described in the present invention, preferably, the superheater comprises an outer annular connecting pipe and an inner annular connecting pipe, and the outer annular connecting pipe is connected to the inner annular connecting pipe.

[0012] In the coil-type steam generator described in the present invention, preferably, the saturated steam generating tube includes a plurality of connecting tubes, a plurality of first hollow balls and a plurality of second hollow balls, the first hollow balls and the second hollow balls are arranged adjacent to each other, and the first hollow balls and the second hollow balls are connected through the connecting tube, and the connecting tube is sleeved with a heat-conducting fin.

[0013] In the coil-type steam generator described in the present invention, preferably, the flow control system includes a booster water pump, the water inlet and outlet ends of the booster water pump are both connected with a connecting pipe, the connecting pipe connects the superheater and the inner cavity of the inner spiral coil, a pressure relief valve is arranged on the upper side of the connecting pipe, a return pipe is arranged on the left side of the pressure relief valve, a flange pipe is fixedly connected to the top of the return pipe, and one end of the flange pipe is connected to the inner cavity of the spiral waste heat chamber.

[0014] The present invention provides a coil-type steam generator having the following beneficial effects:

[0015] (1) A. The present invention uses waste heat to preheat the incoming room temperature water, that is, the first-stage preheating device and the second-stage preheating device can raise the temperature of the room temperature water to about 60 degrees, which can reduce the later combustion time and improve the combustion efficiency.

[0016] B. The jet flame will flame back in the combustion chamber due to the residual heat, making the internal heating more sufficient, improving the efficiency of steam conversion and shortening the conversion time.

[0017] C. Recycle the waste heat to heat the mixed water vapor for a second time, so that the mixed steam water is further heated, so that the internal moisture will be reduced and the internal part will be heated into pure steam.

[0018] (2) When the combustion device heats the combustion chamber, the flame is ejected from the middle of the inner spiral coil to the right, so that the temperature inside the inner spiral coil rises and the water in the inner spiral coil can be heated. Since the flame in the inner spiral coil is blocked by the steam generator and the air flow in the sealed space expands due to heat, the inner spiral coil will have a backflame phenomenon. The backflame flows from the inner wall of the inner spiral coil to the outside, and the purpose of heat accumulation is achieved in the process of flowing. The backflame flows from the inner spiral coil to the middle spiral coil. The heat passes through the reserved channel on the left side of the tube, so that the heat in the reserved space not only contacts the inner spiral coil for three times, and the water in the inner spiral coil evaporates quickly, but also the inner wall of the middle spiral coil contacts the heat, and the heat passes through the middle spiral coil and the outer spiral coil from the right side of the middle spiral coil, so that the outer spiral coil, the middle spiral coil and the inner spiral coil can absorb heat evenly, and the heat can concentrate on heating the water, thereby ensuring the speed of heat collection, improving the efficiency of steam generation, and saving time cost and consumable cost.

[0019] (3) By improving the spirally arranged saturated steam generating tube, the steam mixed gas will release energy when passing through the first hollow ball and the second hollow ball in the connecting tube, forming an expansion and contraction effect, so that the water vapor in the mixed gas will contact the inner walls of the first hollow ball, the connecting tube and the second hollow ball. In addition, by utilizing the waste heat, the heat can be conducted in the saturated steam generating tube, and the dispersed water vapor can be quickly evaporated into steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the steam generator structure of the present invention;

[0022] Figure 3 is a cross-sectional view of the saturated steam chamber structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the superheater structure of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the saturated steam generating tube of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the booster water pump of the present invention.

[0026] In the figure: 1 combustion chamber, 2 mounting baffle, 3 gas supply pipe, 4 steam generator, 5 flame head, 6 inner spiral coil, 7 middle spiral coil, 8 outer spiral coil, 9 heat transfer pipe, 10 steam-water mixing pipe, 11 flow control system, 111 booster pump, 112 pressure relief valve, 113 connecting pipe, 114 return pipe, 115 flange pipe, 12 saturated steam chamber, 13 hollow circular sleeve, 14 circular heat collection sleeve, 15 saturated steam generating pipe, 151 connecting pipe, 152 first hollow ball, 153 second hollow ball, 154 heat transfer fin, 16 spiral empty pipe, 17, 18 spiral coil, 19 spiral waste heat chamber, 20 superheater, 201 outer annular connecting pipe, 202 inner annular connecting pipe, 21 exhaust gas filtering device, 22 external water pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-5 As shown, the present invention provides a technical solution: a coil-type steamer, comprising a combustion chamber 1, a saturated steam chamber 12, a first-stage preheating device and a second-stage preheating device, wherein the saturated steam chamber 12, the first-stage preheating device and the second-stage preheating device are sequentially arranged above the combustion chamber 1 from right to left, and a combustion device is arranged on the left side of the combustion chamber 1;

[0029] The specific process of using the device is as follows;

[0030] Regarding the direction of water flow, the external high-pressure water is preheated in the first-stage preheating device, and the water preheated in the first-stage preheating device is then subjected to a secondary temperature increase treatment in the second-stage preheating device. The heated heat is transported to the combustion chamber 1 for high-temperature heating, and the liquid water is converted into a steam-water mixture, which is then transported to the saturated steam chamber 12 for complete heating to generate pure steam.

[0031] As for the direction of heat flow, the combustion device sprays flames into the combustion chamber 1, and the residual flames enter the saturated steam chamber 12. The residual heat inside flows to the second-stage preheating device, and then flows from the second-stage preheating device to the first-stage preheating device.

[0032] The advantages of the above water flow direction and heat flow direction settings are as follows

[0033] 1. Use waste heat to preheat the incoming room temperature water, that is, the first-stage preheating device and the second-stage preheating device can raise the temperature of the room temperature water to about 60 degrees, which can reduce the later combustion time and improve the combustion efficiency.

[0034] 2. The jetted flames return the residual heat in the combustion chamber 1, so that the internal heating is more sufficient, the efficiency of steam conversion is improved, and the conversion time is shortened.

[0035] 3. The waste heat is recycled to heat the mixed water vapor for a second time, so that the mixed steam water is further heated, so that the internal moisture will be reduced and the internal part will be heated into pure steam.

[0036] like Figure 2 As shown;

[0037] The combustion chamber 1 also includes a steam generator 4, and an inner spiral coil 6 and an outer spiral coil 8 are fixedly connected to the right side of the inner wall of the steam generator 4, and a middle spiral coil 7 is fixedly connected to the left side of the inner wall of the steam generator 4. The water inlet and outlet ends of the middle spiral coil 7 are respectively connected to the inner spiral coil 6 and the outer spiral coil 8. The right end of the combustion device is located on the left side of the inner cavity of the inner spiral coil 6, and a flow control system 11 is provided at one end of the inner spiral coil 6. One end of the flow control system 11 passes through the steam generator 4 and the combustion chamber 1 and extends to the outside. One end of the outer spiral coil 8 is connected to a steam-water mixing tube 10, and one end of the steam-water mixing tube 10 passes through one side of the inner wall of the steam generator 4 and one side of the inner wall of the combustion chamber 1. The top of the steam generator 4 is connected to a heat pipe 9, and the top of the heat pipe 9 is connected to the inner cavity of the saturated steam chamber 12.

[0038] When the combustion device heats the combustion chamber 1, the flame is ejected from the middle of the inner cavity of the inner spiral coil 6 to the right, so that the temperature inside the inner spiral coil 6 rises, and the water in the inner spiral coil 6 can be heated. Since the flame in the inner spiral coil 6 is blocked by the steam generator 4 and the internal air flow in the sealed space expands due to heat, a backflame phenomenon occurs in the inner spiral coil 6 at this time, and the backflame flows from the inner wall of the inner spiral coil 6 to the outside, and the purpose of gathering heat is achieved in the process of flowing. The backflame flows from the left and right sides of the inner spiral coil 6 and the middle spiral coil 7. The heat passes through the channel reserved on the side, so that the heat in the reserved space not only contacts the inner spiral coil 6 three times, and the water in the inner spiral coil 6 evaporates quickly, but also the inner wall of the middle spiral coil 7 contacts the heat, and the heat passes from the right side of the middle spiral coil 7 between the middle spiral coil 7 and the outer spiral coil 8, so that the outer spiral coil 8, the middle spiral coil 7 and the inner spiral coil 6 can absorb heat evenly, and the heat can concentrate on heating the moisture, thereby ensuring the speed of heat collection, improving the efficiency of steam generation, and saving time cost and consumable cost.

[0039] Specifically, the combustion device includes a mounting baffle 2, a gas supply pipe 3 is inserted through the center position of the mounting baffle 2, and a flame collecting head 5 is fixedly connected to the right end of the gas supply pipe 3.

[0040] like Figure 3 As shown, in one embodiment, a heat conduction pipe 9 and a steam-water mixing pipe 10 penetrate the right side of the bottom of the inner wall of the saturated steam chamber 12, a spiral empty pipe 16 is sleeved in the saturated steam chamber 12, a saturated steam generating pipe 15 is sleeved in the spiral empty pipe 16, the spiral empty pipe 16 is connected to the heat conduction pipe 9, the steam-water mixing pipe 10 is connected to the saturated steam generating pipe 15, and the gas outlet end of the saturated steam generating pipe 15 penetrates the top of the inner wall of the saturated steam chamber 12 and extends to the outside thereof.

[0041] After the mixed water vapor enters the saturated steam generating tube 15, the residual heat is transferred to the spiral empty tube 16 again, and the mixed water vapor is concentrated to contact the dispersed mixed water vapor, which can increase the heat contact area and enable the mixed water vapor to fully react.

[0042] like Figure 3 As shown, in order to ensure that the temperature of the external water source gradually rises, the first-stage preheating device includes a circular heat-collecting sleeve 14, a spiral coil 18 is arranged inside the circular heat-collecting sleeve 14, and the spiral coil 18 is provided with a spiral waste heat chamber 19. An external water pipe 22 is arranged on the top of the spiral coil 18, and one end of the external water pipe 22 extends to the top of the circular heat-collecting sleeve 14. An exhaust gas filter device 21 is arranged on the left side of the circular heat-collecting sleeve 14. The second-stage preheating device includes a hollow circular sleeve 13, and a superheater 20 is connected to the hollow circular sleeve 13. One end of the superheater 20 is connected to the inner cavity of the spiral waste heat chamber 19, and the water outlet of the superheater 20 is connected to the flow control system 11.

[0043] By using the first-stage preheating device and the second-stage preheating device, since the temperature of the waste heat when it is finally discharged is lower than the temperature in the previous stage, the final waste heat is the temperature rise of the external water source. When the external water source flows into the spiral waste heat chamber 19 set in the spiral belt 18 for circulation, the direction of water flow is vortex, which can gradually increase the water temperature. In addition, the spiral belt 18 is set with a vortex, so that the externally discharged heat is in full contact with it, and the external heat makes the internal water temperature rise. The setting of the second-stage preheating device further makes full use of the waste heat at a higher temperature, so that the water temperature rises again. In this way, the waste heat is fully utilized to heat the water, thereby ensuring the steam conversion rate while saving water.

[0044] like Figure 4As shown, specifically, the superheater 20 includes an outer annular connecting tube 201 and an inner annular connecting tube 202, and the outer annular connecting tube 201 is connected to the inner annular connecting tube 202. In this way, the outer annular connecting tube 201 and the inner annular connecting tube 202 make the water flow thinner when passing through, so that when the waste heat heats the outer annular connecting tube 201 and the inner annular connecting tube 202, the water inside is more fully in contact with the waste heat, thereby increasing the speed of water heating.

[0045] In one embodiment, the saturated steam generating tube 15 includes a plurality of connecting tubes 151, a plurality of first hollow balls 152 and a plurality of second hollow balls 153. The first hollow balls 152 and the second hollow balls 153 are arranged adjacent to each other, and the first hollow balls 152 and the second hollow balls 153 are connected through the connecting tube 151. A heat conducting fin 154 is sleeved on the connecting tube 151.

[0046] Since the water-mixed steam is not high-purity steam, it cannot meet the process requirements if used directly. The common method is to reduce the water content inside by increasing the pipeline path, but the effect is not very obvious. By improving the spirally arranged saturated steam generating tube 15, the steam mixed gas passes through the first hollow ball 152 and the second hollow ball 153 in the connecting tube 151, and releases energy to form an expansion and contraction effect. In this way, the water vapor in the mixed gas will contact the inner walls of the first hollow ball 152, the connecting tube 151 and the second hollow ball 153. In addition, by utilizing the waste heat, the heat can be conducted in the saturated steam generating tube 15, and the dispersed water vapor can be quickly evaporated into steam.

[0047] In one embodiment, the flow control system 11 includes a booster water pump 111, and the water inlet and outlet ends of the booster water pump 111 are connected with a connecting pipe 113, and the connecting pipe 113 connects the superheater 20 and the inner cavity of the inner spiral coil 6. A pressure relief valve 112 is arranged on the upper connecting pipe 113, and a return pipe 114 is arranged on the left side of the pressure relief valve 112. A flange pipe 115 is fixedly connected to the top of the return pipe 114, and one end of the flange pipe 115 is connected to the inner cavity of the spiral waste heat chamber 19.

[0048] During specific use, the booster pump 111 can increase the overall water flow rate. Due to the internal heating, the pressure inside the pipeline will increase, causing the front-end water supply pressure to interfere with the water pressure during terminal heating. By setting the booster pump 111, the water supply pressure at the front end of the heating is increased, so that a stable flow rate is formed at the rear end, thereby increasing the stable steam output while forming a stable conveying flow state for the entire pipeline. The use of the pressure relief valve 112, because the internal pressure increases when the water is heated into steam, such long-term overpressure operation will cause the internal pipeline to bear an increase in pressure, which will cause damage to the inside of the pipeline. The use of the pressure relief valve 112, when the internal pressure increases, can perform a pressure relief operation, so that the internal pressure is maintained under a safe standard pressure, and the depressurized water can return to the water supply section, which can increase the stability and safety of the device and improve its service life to a certain extent.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coil-type steam generator, comprising a combustion chamber, a saturated steam chamber, a first-stage preheating device and a second-stage preheating device, characterized in that: The saturated steam chamber, the first-stage preheating device and the second-stage preheating device are arranged above the combustion chamber from right to left, and the combustion device is arranged on the left side of the combustion chamber; The combustion chamber also includes a steam generator, an inner spiral coil and an outer spiral coil are fixedly connected to the right side of the inner wall of the steam generator, a middle spiral coil is fixedly connected to the left side of the inner wall of the steam generator, a water inlet end and a water outlet end of the middle spiral coil are respectively connected to the inner spiral coil and the outer spiral coil, the right end of the combustion device is located on the left side of the inner cavity of the inner spiral coil, a flow control system is provided at one end of the inner spiral coil, one end of the flow control system passes through the steam generator and the combustion chamber and extends to the outside, one end of the outer spiral coil is connected to a steam-water mixing pipe, one end of the steam-water mixing pipe passes through one side of the inner wall of the steam generator and one side of the inner wall of the combustion chamber, a heat conduction pipe is connected to the top of the steam generator, and the top of the heat conduction pipe is connected to the inner cavity of the saturated steam chamber; A heat conduction pipe and a steam-water mixing pipe are penetrated on the right side of the bottom of the inner wall of the saturated steam chamber, a spiral empty pipe is sleeved in the saturated steam chamber, a saturated steam generating pipe is sleeved in the spiral empty pipe, the spiral empty pipe is connected to the heat conduction pipe, the steam-water mixing pipe is connected to the saturated steam generating pipe, and the gas outlet end of the saturated steam generating pipe penetrates the top of the inner wall of the saturated steam chamber and extends to the outside thereof; The first-stage preheating device comprises a circular heat-collecting jacket, a spiral coil is arranged inside the circular heat-collecting jacket, a spiral waste heat chamber is arranged in the spiral coil, an external water pipe is arranged on the top of the spiral coil, one end of the external water pipe extends to the top of the circular heat-collecting jacket, and an exhaust gas filter device is arranged on the left side of the circular heat-collecting jacket; The second-stage preheating device comprises a hollow circular sleeve, a superheater is connected to the inner sleeve of the hollow circular sleeve, one end of the superheater is connected to the inner cavity of the spiral waste heat cavity, and the water outlet end of the superheater is connected to the flow control system; The superheater comprises an outer annular connecting pipe and an inner annular connecting pipe, and the outer annular connecting pipe is connected with the inner annular connecting pipe; The saturated steam generating tube comprises a plurality of connecting tubes, a plurality of first hollow balls and a plurality of second hollow balls. The first hollow balls and the second hollow balls are arranged adjacent to each other and are connected with each other through the connecting tube. The connecting tube is sleeved with a heat conducting fin.

2. A coil-type steam generator according to claim 1, characterized in that: The flow control system includes a booster water pump. The water inlet and outlet ends of the booster water pump are connected with connecting pipes. The connecting pipe connects the superheater and the inner cavity of the inner spiral coil. A pressure relief valve is arranged on the upper connecting pipe. A return pipe is arranged on the left side of the pressure relief valve. A flange pipe is fixedly connected to the top of the return pipe. One end of the flange pipe is connected to the inner cavity of the spiral waste heat chamber.

Images