CN211952714U - Waste heat recycling combustion type steam generator - Google Patents

Abstract

The utility model relates to a waste heat recycling's burning formula steam generator, include: the device comprises a combustion chamber, a heating chamber, a water inlet pipe, a steam exhaust pipe, an air inlet pipe, a smoke exhaust pipe, a water storage tank and a preheating device; the heating chamber is located inside the combustion chamber, the one end of intake pipe with the combustion chamber be linked together with to let in the natural gas in the space, the tank is located the combustion chamber outside, the heating chamber the tank passes through the inlet tube is linked together, the steam vent has been seted up at the top of heating chamber, the one end of exhaust pipe is run through first perforation with the steam vent, preheating device locates the top of combustion chamber, preheating device with the tank is linked together, the exhaust port has been seted up at the top of combustion chamber, the one end of exhaust pipe is located exhaust port department, the other end of exhaust pipe with preheating device is linked together. The utility model discloses have the effect that improves steam generator's thermal efficiency.

Description

Waste heat recycling combustion type steam generator

Technical Field

The utility model belongs to the technical field of steam generator's technique and specifically relates to a waste heat recycling's burning formula steam generator is related to.

Background

A steam generator (commonly called a boiler) is a mechanical device that heats water into hot water or steam by using heat energy of fuel or other energy sources, and a combustion type steam generator heats water by using fuel combustion to generate hot steam.

A chinese patent with publication number CN109099409A is retrieved, which discloses a steam generator, comprising a heating chamber and a combustion chamber, wherein the combustion chamber is arranged at the right lower end of the heating chamber, and a fire inlet and a fire outlet are arranged at two sides of the heating chamber; a plurality of heating pipes are uniformly distributed in the heating chamber, two ends of each heating pipe are directly communicated to the fire inlet and the fire outlet, cooling water is filled at the outer ends of the heating pipes, the water level of the cooling water is positioned at two thirds of the heating chamber, and a steam outlet pipe is arranged at the upper end of the heating chamber; the side of the combustion chamber is provided with a fuel feeding pipe, the two ends of the combustion chamber are connected with a fire inlet and a fire outlet, the two sides of the heating chamber are also provided with a fire inlet and a fire outlet, and the fire inlet is used for introducing hot fire from the combustion chamber. And a chimney is also arranged at the upper end of the fire inlet and used for discharging unburned fuel and other gases generated in the fuel.

The above prior art solutions have the following drawbacks: because the combustion flue gas contains a large amount of waste heat, the waste heat is caused by directly discharging the waste heat from the chimney to the air.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a waste heat recycling's burning formula steam generator utilizes burning flue gas waste heat, has the advantage that improves steam generator's thermal efficiency to prior art exists not enough.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a waste heat recycling fired steam generator comprising: the device comprises a combustion chamber, a heating chamber, a water inlet pipe, a steam exhaust pipe, an air inlet pipe, a smoke exhaust pipe, a water storage tank and a preheating device;

the heating chamber is arranged in the combustion chamber, a gap is reserved between the heating chamber and the combustion chamber, one end of the air inlet pipe is communicated with the combustion chamber so as to introduce natural gas into the gap, the water storage tank is arranged on the outer side of the combustion chamber, the heating chamber and the water storage tank are communicated through the water inlet pipe, the water inlet pipe is provided with a first water pump, the top of the heating chamber is provided with an exhaust port, the top of the combustion chamber is provided with a first through hole, one end of the exhaust pipe penetrates through the first through hole and the exhaust port, and the other end of the exhaust pipe protrudes out of the combustion chamber;

the preheating device is arranged at the top of the combustion chamber, the preheating device is communicated with the water storage pool through a first pipeline and a second pipeline, a second water pump is arranged on the first pipeline, a smoke exhaust port is formed in the top of the combustion chamber, one end of the smoke exhaust pipe is arranged at the smoke exhaust port, and the other end of the smoke exhaust pipe is communicated with the preheating device.

Through adopting above-mentioned technical scheme, when steam generator during operation, the second water pump is taken out the water in the tank to preheating device in through first pipeline, the natural gas gets into the combustion chamber through the intake pipe and burns and heat the water in the heating chamber and produce steam, steam gathers in the heating chamber top and is discharged through the exhaust pipe and utilized, the hot flue gas that produces during the natural gas burning rises and gets into preheating device through the exhaust pipe, hot flue gas preheats the water in preheating device, the water after preheating flows back to the tank through the second pipeline again for subsequent use, first water pump is taken out the water after preheating in the tank to heating indoor reheating and is produced steam, the water after preheating is heated the heat that produces steam needs in the heating chamber again less, through utilizing burning flue gas waste heat, steam generator's thermal efficiency is improved.

The present invention may be further configured in a preferred example, wherein the preheating device includes: the preheating chamber, the water distribution pipe and the mounting seat;

the preheating chamber passes through the mount pad install in the top of combustion chamber, the preheating chamber top is the opening form, the inside cavity of preheating chamber forms preheating chamber, the distributive pipe is equipped with many, many the distributive pipe is equal vertical to be located preheating chamber just is the fusiformis and lays, the one end of first pipeline is located preheating chamber top and mouth of pipe are towards below, many the upper end of distributive pipe all with the bottom of first pipeline is linked together, the one end of second pipeline is located preheating chamber bottom and mouth of pipe are towards the top, many the lower extreme of distributive pipe all with the upper end of second pipeline is linked together.

Through adopting above-mentioned technical scheme, the preheating chamber is convenient for the gathering of hot flue gas to preheat the water in the distributive pipe better, many distributive pipes will be shunted from the water that first pipeline flows, make water heated more abundant, many distributive pipes are fusiformis and lay the collection of both ends rivers of being convenient for, the preheating chamber top is the opening form and is for the discharge of flue gas, prevent that the preheating chamber from gathering too much flue gas and pressure is too big.

The utility model discloses can further configure to in a preferred example, the inside of tank is equipped with the separate layer, the separate layer will the tank divide into first cavity and second cavity, the other end of first pipeline is located in the first cavity, the other end of second pipeline is located in the second cavity, the other end of inlet tube is located in the second cavity.

Through adopting above-mentioned technical scheme, the separate layer is divided into two parts with the tank, is convenient for distinguish preheated water and the water after preheating separately, prevents heat transfer, makes the water after preheating keep the temperature and is taken out to the heating chamber in.

The utility model discloses can further configure to in a preferred example, the preheating chamber opening part is equipped with the top cap, a plurality of through-holes have been seted up on the top cap, first pipeline runs through the through-hole.

Through adopting above-mentioned technical scheme, have the through-hole top cap and slowed down the flue gas from preheating the exhaust speed in chamber, increase the dwell time of flue gas in preheating the chamber to better preheating the water in the distributive pipe.

The utility model discloses can further configure to in a preferred example, the distributive pipe is crooked form, the interval is provided with a plurality of archs on the inner wall of the relative both sides of distributive pipe.

Through adopting above-mentioned technical scheme, crooked distributive pipe increases the dwell time of rivers in preheating the chamber on the one hand, reduces the speed that rivers flow in distributive pipe on the one hand, and the arch has also reduced the speed that rivers flow in distributive pipe simultaneously, makes the better quilt of water in the distributive pipe preheat.

The utility model discloses can further configure to in a preferred example, the preheating chamber bottom is the back taper, the preheating chamber bottom is equipped with the third pipeline, lower department in preheating chamber bottom is equipped with the second and perforates, the one end of third pipeline is located second perforation department, the third pipeline other end with second cavity looks UNICOM.

By adopting the technical scheme, because the water vapor generated by the combustion of the natural gas is discharged into the preheating chamber along with the flue gas through the smoke exhaust pipe, part of the water vapor in the preheating chamber is condensed to form water and then falls on the bottom of the preheating chamber, and the inverted cone-shaped bottom of the preheating chamber is beneficial to the flowing of condensed water and the condensed water is converged at the bottom of the preheating chamber and is discharged to the second cavity through the third pipeline.

The present invention can be further configured in a preferred embodiment to further include: the filter is arranged outside the water storage tank, the filter is communicated with the first cavity through a fourth pipeline, and water flows into the first cavity after being filtered by the filter.

Through adopting above-mentioned technical scheme, aquatic impurity forms the incrustation scale easily in the heating chamber and is difficult to the clearance, and the filter is used for filtering the impurity of aquatic, prevents that the incrustation scale from forming too fast in the heating chamber, reduces the clearance frequency.

The utility model discloses can further configure to in a preferred example, a terminal surface of combustion chamber is equipped with two smoke box doors.

Through adopting above-mentioned technical scheme, the cigarette chamber door is convenient for the staff and gets into space department and inspect and maintain, because the space is not very big, two cigarette chamber doors are convenient for the staff and get into from both sides.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the preheating cavity is convenient for gathering hot flue gas, so that water in the water distribution pipes is better preheated, the water flowing from the first pipeline is distributed by the water distribution pipes, the water is more fully heated, the water distribution pipes are distributed in a shuttle shape, the water flows at two ends can be conveniently collected, the top of the preheating chamber is open, the flue gas is discharged, and the preheating chamber is prevented from gathering excessive flue gas and having overlarge pressure;

2. the bent water diversion pipe increases the retention time of water flow in the preheating cavity, reduces the flowing speed of the water flow in the water diversion pipe, and simultaneously reduces the flowing speed of the water flow in the water diversion pipe due to the bulge, so that the water in the water diversion pipe is preheated better;

3. the aquatic impurity forms the incrustation scale easily in the heating chamber and is difficult to clear up, and the filter is used for filtering the impurity of aquatic, prevents that the incrustation scale from forming too fast in the heating chamber, reduces the clearance frequency.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic side view of an embodiment of the present invention;

fig. 3 is an enlarged view at a in fig. 1.

Reference numerals: 1. a combustion chamber; 2. a heating chamber; 3. a water inlet pipe; 4. a steam exhaust pipe; 5. a first water pump; 6. an air inlet pipe; 7. a smoke exhaust pipe; 8. a water storage tank; 81. a separation layer; 82. a first cavity; 83. a second cavity; 9. a preheating device; 91. a preheating chamber; 911. a top cover; 92. a water diversion pipe; 921. a protrusion; 93. a mounting seat; 10. a first conduit; 11. a second conduit; 12. a second water pump; 13. a third pipeline; 14. a filter; 15. a smoke box door; 16. a fourth conduit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a waste heat recycling's burning formula steam generator, include: the device comprises a combustion chamber 1, a heating chamber 2, a water inlet pipe 3, a steam exhaust pipe 4, an air inlet pipe 6, a smoke exhaust pipe 7, a water storage tank 8 and a preheating device 9. The heating chamber 2 and the combustion chamber 1 are both cylindrical and made of carbon steel materials, the heating chamber 2 is installed inside the combustion chamber 1 through an installation frame, a gap is reserved between the heating chamber 2 and the combustion chamber 1, one end of an air inlet pipe 6 is communicated with the combustion chamber 1 to introduce natural gas into the gap for combustion, a water storage pool 8 is arranged outside the combustion chamber 1, the heating chamber 2 and the water storage pool 8 are communicated through an air inlet pipe 3, a first water pump 5 is arranged on the water inlet pipe 3, a steam exhaust port is formed in the top of the heating chamber 2, a first through hole is formed in the top of the combustion chamber 1, one end of a steam exhaust pipe 4 penetrates through the first through hole and the steam exhaust port, the other end of the steam exhaust pipe 4 protrudes out of the combustion chamber 1, and the water inlet pipe 3, the steam exhaust pipe 4, the air inlet; preheating device 9 locates the top of combustion chamber 1, is linked together through first pipeline 10, second pipeline 11 between preheating device 9 and the tank 8, is equipped with second water pump 12 on the first pipeline 10, and the exhaust port has been seted up at the top of combustion chamber 1, and exhaust port department is located to the one end of exhaust pipe 7, and the other end and the preheating device 9 of exhaust pipe 7 are linked together.

Two cigarette box doors 15 are arranged on one end face of the combustion chamber 1, two vertical side edges, away from the two cigarette box doors 15, are hinged to the combustion chamber 1, other sides are connected with the combustion chamber 1 in a sealing mode through bolts, the two cigarette box doors 15 are symmetrically arranged relative to the circle center of the circular end face of the combustion chamber 1, the main body of each cigarette box door 15 is rectangular, and two opposite side faces of the two cigarette box doors 15 are arc-shaped. The two cigarette box doors 15 are convenient for workers to enter the gap for inspection and maintenance, and the two cigarette box doors 15 are convenient for the workers to enter from two sides because the gap is not very large.

Referring to fig. 1 and 3, the preheating device 9 includes: a preheating chamber 91, a water distribution pipe 92 and a mounting seat 93; the preheating chamber 91 is welded and installed on the top of the combustion chamber 1 through an installation seat 93, the installation seat 93 is made of stainless steel materials, the top of the preheating chamber 91 is open, a preheating cavity is formed in the interior of the preheating chamber 91 in a hollow mode, the water distribution pipes 92 are stainless steel water pipes, three water distribution pipes 92 are arranged (the number of the water distribution pipes 92 can be set according to different conditions), the three water distribution pipes 92 are vertically arranged in the preheating cavity and distributed in a shuttle shape, one end of a first pipeline 10 is installed on the top of the preheating cavity through a cross rod, the pipe orifices of the first pipeline face downwards, the two ends of the cross rod are welded and fixed with the inner wall of the preheating chamber 91, the first pipeline 10 is welded and fixed with one side of the cross rod, the upper ends of the three water distribution pipes 92 are welded and communicated with the bottom end of the first pipeline 10, one end of a second pipeline 11 is also installed on the bottom of the preheating cavity through the cross rod, the pipe orifices, the outer surface of the preheating chamber 91 can be provided with a rock wool heat-insulating layer to prevent heat loss quickly.

The preheating chamber is convenient for the gathering of hot flue gas to preheat the water in distributive pipe 92 better, many distributive pipes 92 will be shunted from the water that first pipeline 10 flows, make water heated more abundant, many distributive pipes 92 are fusiform and lay the collection of both ends rivers of being convenient for, preheating chamber 91 top is the discharge for the flue gas, prevents that preheating chamber 91 from gathering too much flue gas and pressure is too big.

The inside of tank 8 is equipped with separate layer 81, separate layer 81 divide into first cavity 82 and second cavity 83 with tank 8, first pipeline 10's the other end is located in first cavity 82, second pipeline 11's the other end is located in second cavity 83, the surface cover of second cavity 83 is equipped with the rock wool heat preservation, prevent to preheat the hydrothermal volume after scattering and disappearing too fast, the other end of inlet tube 3 is located in second cavity 83, the split layer is two corrosion resistant plate upper and lower interval arrangement, the centre is the vacuum. The partition layer 81 divides the water storage tank 8 into two parts, so that the preheated water and the preheated water can be distinguished conveniently, heat transfer is prevented, and the preheated water is kept at a temperature and is pumped into the heating chamber 2.

The opening of preheating chamber 91 is equipped with top cap 911, has seted up a plurality of through-holes on top cap 911, and first pipeline 10 runs through the through-hole, and top cap 911 is stainless steel material, and the through-hole diameter that first pipeline 10 runs through is identical with first pipeline 10. The top cover 911 with through holes slows down the exhaust speed of the flue gas from the preheating chamber and increases the residence time of the flue gas in the preheating chamber, thereby better preheating the water in the water distribution pipe 92.

The water diversion pipe 92 is curved, and a plurality of protrusions 921 are arranged on the inner walls of two opposite sides of the water diversion pipe 92 at intervals. The curved diversion pipe 92 increases the residence time of the water flow in the preheating chamber, reduces the flow speed of the water flow in the diversion pipe 92, and reduces the flow speed of the water flow in the diversion pipe 92 due to the protrusion 921, so that the water in the diversion pipe 92 can be preheated better.

The bottom of the preheating chamber 91 is in an inverted cone shape, a third pipeline 13 is arranged at the bottom of the preheating chamber 91, a second through hole is arranged at the lower position of the bottom of the preheating chamber 91, the third pipeline 13 is made of stainless steel, one end of the third pipeline 13 is welded at the second through hole, and the other end of the third pipeline 13 is communicated with the second cavity 83. Because the natural gas is combusted to generate water vapor, the water vapor is discharged into the preheating chamber 91 along with the flue gas through the smoke exhaust pipe 7, the water vapor is condensed to form water in the preheating chamber 91 and then falls to the bottom of the preheating chamber 91, and the inverted cone-shaped bottom of the preheating chamber 91 is favorable for the condensed water to flow down and converge at the bottom of the preheating chamber 91 and then is discharged to the second cavity 83 through the third pipeline 13.

Further comprising: the filter 14, the filter 14 is arranged outside the water storage tank 8, the fourth pipeline 16 is made of stainless steel, the filter 14 is communicated with the first cavity 82 through the fourth pipeline 16, and water flows into the first cavity 82 after being filtered by the filter 14. Impurities in water are easy to form scale in the heating chamber 2 and difficult to clean, and the filter 14 is used for filtering the impurities in the water, preventing the scale from forming too fast in the heating chamber 2 and reducing the cleaning frequency.

The implementation principle of the embodiment is as follows: when the steam generator works, the water in the water storage tank 8 is pumped into the preheating device 9 through the first pipeline 10 by the second water pump 12, the natural gas enters the combustion chamber 1 through the air inlet pipe 6 to be combusted and heats the water in the heating chamber 2 to generate water vapor, the water vapor is gathered at the top of the heating chamber 2 and is discharged through the steam exhaust pipe 4 to be utilized, hot flue gas generated during the combustion of the natural gas rises through the smoke exhaust pipe 7 to enter the preheating device 9, the water of hot flue gas in to preheating device 9 preheats, and the water after preheating flows back to in the tank 8 through second pipeline 11 again for subsequent use, and first water pump 5 is taken out the water after preheating in the tank 8 and is reheated in heating chamber 2 and produce steam, and the water after preheating is heated again in heating chamber 2 and is produced the heat that steam needs less, through utilizing the burning flue gas waste heat, improves steam generator's thermal efficiency.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. A waste heat recycling fired steam generator comprising: the device comprises a combustion chamber (1), a heating chamber (2), a water inlet pipe (3), a steam exhaust pipe (4), an air inlet pipe (6), a smoke exhaust pipe (7), a water storage tank (8) and a preheating device (9);

the heating chamber (2) is arranged inside the combustion chamber (1), a gap is reserved between the heating chamber (2) and the combustion chamber (1), one end of the air inlet pipe (6) is communicated with the combustion chamber (1) to introduce natural gas into the gap, the water storage tank (8) is arranged on the outer side of the combustion chamber (1), the heating chamber (2) and the water storage tank (8) are communicated through the water inlet pipe (3), the water inlet pipe (3) is provided with a first water pump (5), the top of the heating chamber (2) is provided with a steam exhaust port, the top of the combustion chamber (1) is provided with a first through hole, one end of the steam exhaust pipe (4) penetrates through the first through hole and the steam exhaust port, and the other end of the steam exhaust pipe (4) protrudes out of the combustion chamber (1);

preheating device (9) are located the top of combustion chamber (1), preheating device (9) with be linked together through first pipeline (10), second pipeline (11) between reservoir (8), be equipped with second water pump (12) on first pipeline (10), the exhaust port has been seted up at the top of combustion chamber (1), the one end of pipe of discharging fume (7) is located exhaust port department, the other end of pipe of discharging fume (7) with preheating device (9) are linked together.

2. The waste heat recycling fired steam generator according to claim 1, characterized in that the preheating means (9) comprises: a preheating chamber (91), a water distribution pipe (92) and a mounting seat (93);

preheating chamber (91) pass through mount pad (93) install in the top of combustion chamber (1), preheating chamber (91) top is the opening form, the inside cavity of preheating chamber (91) forms preheating chamber, distributive pipe (92) are equipped with many, many distributive pipe (92) are all vertical to be located preheating chamber just is the fusiformis and lays, the one end of first pipeline (10) is located preheating chamber top and mouth of pipe are towards the below, many the upper end of distributive pipe (92) all with the bottom of first pipeline (10) is linked together, the one end of second pipeline (11) is located preheating chamber bottom and mouth of pipe are towards the top, many the lower extreme of distributive pipe (92) all with the upper end of second pipeline (11) is linked together.

3. The waste heat recycling combustion steam generator as claimed in claim 2, wherein a separation layer (81) is disposed inside the water storage tank (8), the separation layer (81) divides the water storage tank (8) into a first cavity (82) and a second cavity (83), the other end of the first pipe (10) is disposed in the first cavity (82), and the other end of the second pipe (11) is disposed in the second cavity (83).

4. The waste heat recycling combustion steam generator as claimed in claim 3, wherein a top cover (911) is provided at an opening of the preheating chamber (91), the top cover (911) is provided with a plurality of through holes, and the first pipe (10) penetrates through the through holes.

5. The waste heat recycling fired steam generator of claim 2 wherein the knock out tube (92) is curved and a plurality of protrusions (921) are spaced on the inner wall of the knock out tube (92) on opposite sides.

6. The waste heat recycling combustion steam generator as claimed in claim 4, wherein the bottom of the preheating chamber (91) is in an inverted cone shape, a third pipe (13) is arranged at the bottom of the preheating chamber (91), a second through hole is arranged at a lower position of the bottom of the preheating chamber (91), one end of the third pipe (13) is arranged at the second through hole, and the other end of the third pipe (13) is communicated with the second cavity (83).

7. The heat recycling fired steam generator of claim 3 further comprising: the filter (14), the filter (14) is located the tank (8) outside, the filter (14) with first cavity (82) are linked together through fourth pipeline (16), water flows into in first cavity (82) after filter (14) filters.

8. The waste heat recycling fired steam generator according to claim 1 characterized in that one end face of the combustion chamber (1) is provided with two smoke box doors (15).

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