CN113295019A

CN113295019A - Steam recovery device

Info

Publication number: CN113295019A
Application number: CN202110513505.8A
Authority: CN
Inventors: 李雄; 计红; 钟愉曾
Original assignee: Yudu Zhengyi Paper Products And Paper Industry Co ltd
Current assignee: Yudu Zhengyi Paper Products And Paper Industry Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-08-24

Abstract

The invention belongs to the technical field of boiler steam, in particular to a steam recovery device, aiming at the problems that steam must be emptied to ensure normal operation of a boiler, and the emission noise pollution and the cost waste exist, the steam recovery device comprises a recovery water tank, wherein a boiler sub-cylinder is fixedly arranged on one side of the top of the recovery water tank, the boiler sub-cylinder extends to the bottom of the recovery water tank, a horizontally arranged support rod is fixedly arranged on the inner wall of the bottom of the circumference of the boiler sub-cylinder, a rotating rod is rotatably arranged at the center of the bottom of the support rod, spiral blades are fixedly arranged outside the circumference of the rotating rod, a rotary noise elimination heater is fixedly arranged at the bottom of the rotating rod, a heat preservation shell is sleeved on the inner wall of the recovery water tank, and a liquefaction plate is fixedly arranged at the top of the inner side wall of the heat preservation shell. The steam recovery device can recover steam and heat discharged from the boiler, reduce cost and avoid noise caused by directly exhausting the steam.

Description

Steam recovery device

Technical Field

The invention relates to the technical field of boiler steam, in particular to a steam recovery device.

Background

The steam boiler refers to a boiler device for producing steam, and the steam boiler can be divided into an electric steam boiler, an oil steam boiler, a gas steam boiler and the like according to fuel; the steam boiler can be divided into a manual combustion steam boiler and a full-automatic chain combustion steam boiler according to the fuel supply mode; the steam boiler can be divided into a vertical steam boiler and a horizontal steam boiler according to the structure, wherein the small steam boiler is mainly of a single-return-stroke and double-return-stroke vertical structure, and the large steam boiler is mainly of a three-return-stroke horizontal structure.

In a paper mill, under the configuration condition that 1 boiler supplies steam for 1 paper machine, when the steam is stopped for a short time when the paper machine breaks, the boiler needs to exhaust the steam for ensuring normal operation, and the problems of emission noise pollution, cost waste and the like exist. In order to solve the problem, a steam recovery device needs to be designed to recover the exhausted steam.

Disclosure of Invention

The invention provides a steam recovery device based on the technical problems that steam must be emptied to ensure normal operation of a boiler, emission noise pollution exists, and cost is wasted.

The invention provides a steam recovery device, which comprises a recovery water tank, wherein a boiler cylinder is fixedly arranged on one side of the top of the recovery water tank, the boiler cylinder extends to the bottom of the recovery water tank, a horizontally arranged support rod is fixedly arranged on the inner wall of the bottom of the circumference of the boiler cylinder, a rotating rod is rotatably arranged at the central position of the bottom of the support rod, a helical blade is fixedly arranged outside the circumference of the rotating rod, a rotary noise elimination heater is fixedly arranged at the bottom of the rotating rod, a heat preservation shell is sleeved on the inner wall of the recovery water tank, a liquefaction plate is fixedly arranged at the top position of the inner side wall of the heat preservation shell, the liquefaction plate is in a notch shape, a drain hole is formed at the central position of the bottom of the liquefaction plate, uniformly arranged convex blocks are fixedly arranged at the bottom of the liquefaction plate, and a water, and the top of the water inlet pipe is fixedly provided with a water inlet pipe cover.

Preferably, a plurality of stirring rods distributed in an annular array are fixedly installed on the side wall of the rotary type noise elimination heater.

Preferably, the stirring rod is in a folded shape, and one end of the stirring rod is provided with a plurality of water guide holes distributed at equal intervals.

Preferably, the water guide hole has an hourglass shape.

Preferably, the bottom of the bump is conical.

Preferably, a temperature sensor is fixedly mounted on the inner wall of the center of the bottom of the heat-insulating shell, and a water level sensor is fixedly mounted on the inner wall of one side of the bottom of the heat-insulating shell.

Preferably, the bottom fixed mounting of recovery water tank has the support base, one side fixed mounting that the recovery water tank was kept away from at the support base top has the work soft water groove, the top fixed mounting of recovery water tank and work soft water groove has same recovery water pipe, the one end of recovery water pipe extends to the bottom of recovery water tank, the one end fixed mounting that the recovery water pipe is located recovery water tank inside has the suction pump, the bottom position fixed mounting that recovery water tank one side was kept away from to the work soft water groove has the aqueduct.

Preferably, the inner walls of the boiler branch cylinder and the recovery water pipe are both provided with heat insulation layers.

Preferably, the top fixed mounting of boiler cylinder has the stop valve, one side position fixed mounting that the top of boiler cylinder is located the stop valve has first electric control valve, one side position fixed mounting that the top of boiler cylinder is located first electric control valve has the relief pressure valve, the top position fixed mounting of recovery water pipe has the second electric control valve.

Preferably, a DCS controller is fixedly installed on the outer wall of one end of the recovery water tank.

Compared with the prior art, the invention provides a steam recovery device, which has the following beneficial effects:

1. the steam recovery device provided by the invention can recover steam and heat discharged from a boiler, reduce the cost and avoid noise caused by directly emptying the steam.

2. The steam recovery device provided by the invention discharges the discharged steam into the recovery water tank at a lower temperature, the water temperature is increased, 1-1.2 tons of steam can be recovered from 7 tons of water, and the heated soft water is used for boiler steam water and is used for increasing the steam yield of one ton of coal.

3. The invention provides a steam recovery device, wherein instruments such as a first electric regulating valve, a second electric regulating valve, a stop valve, a pressure reducing valve, a temperature sensor, a water level sensor and the like are uniformly controlled by a DCS controller, wherein the regulating valve of a boiler is integrally controlled by the DCS and automatically regulated according to the pressure of the boiler and the running condition of a paper machine, a water supplementing valve regulating valve is controlled by the liquid level of a recovery water tank, and a hot water outlet regulating valve is controlled according to the temperature of the recovery water tank and the liquid level of a working soft water tank.

4. According to the steam recovery device, the heater for mixing steam and water adopts the rotary type noise elimination heater, so that the heating efficiency is ensured, and the noise of adding steam into water is reduced.

Drawings

Fig. 1 is a schematic perspective view of a vapor recovery device according to the present invention;

FIG. 2 is a schematic sectional front view of a recycling water tank of a vapor recycling device according to the present invention;

FIG. 3 is a schematic structural view of a rotary salient muffling heater of a vapor recovery device according to the present invention;

fig. 4 is a schematic cross-sectional view of a highlighted water guide hole of a vapor recovery device according to the present invention.

In the figure: 1. the boiler is divided into cylinders; 2. a stop valve; 3. a first electric control valve; 4. a pressure reducing valve; 5. a recovery water tank; 6. a water inlet pipe cover; 7. a water inlet pipe; 8. a second electric control valve; 9. a water recovery pipe; 10. a DCS controller; 11. a support base; 12. a working soft water tank; 13. a water conduit; 14. a rotary type noise elimination heater; 15. a bump; 16. a liquefaction panel; 17. a heat-insulating shell; 18. a temperature sensor; 19. a water level sensor; 20. a water pump; 21. a heat-insulating layer; 22. a support bar; 23. rotating the rod; 24. a helical blade; 25. a water guide hole; 26. a stirring rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, a vapor recovery device, comprising a recovery water tank 5, a boiler air cylinder 1 is fixedly installed on one side of the top of the recovery water tank 5, the boiler air cylinder 1 extends to the bottom of the recovery water tank 5, a horizontally arranged support rod 22 is fixedly installed on the inner wall of the bottom of the circumference of the boiler air cylinder 1, a rotating rod 23 is rotatably installed at the central position of the bottom of the support rod 22, a helical blade 24 is fixedly installed outside the circumference of the rotating rod 23, a rotary noise elimination heater 14 is fixedly installed at the bottom of the rotating rod 23, a heat preservation shell 17 is sleeved on the inner wall of the recovery water tank 5, a liquefaction plate 16 is fixedly installed at the top position of the inner side wall of the heat preservation shell 17, the liquefaction plate 16 is in a concave shape, a drain hole is formed at the central position of the bottom of the liquefaction plate 16, a uniformly arranged convex block 15 is fixedly installed at the bottom of the liquefaction plate 16, a water inlet pipe 7 is fixedly installed at the central position of the top of the recovery water tank 5, and a water inlet pipe cover 6 is fixedly arranged at the top of the water inlet pipe 7.

Specifically, a plurality of stirring rods 26 distributed in an annular array are fixedly mounted on the side wall of the rotary type noise elimination heater 14, the stirring rods 26 are in a folded shape, a plurality of water guide holes 25 distributed at equal intervals are formed in one end of each stirring rod 26, the water guide holes 25 are in an hourglass shape, and the stirring rods can stir water around the rotary type noise elimination heater in the rotating process of the rotary type noise elimination heater, so that steam can be fully mixed with cold water, the liquidation sufficiency of the steam is improved, and the full recovery of the steam is realized; in addition, the stirring rod is folded, and the hourglass-shaped water guide holes are formed in the stirring rod, so that the mixing sufficiency of steam and cold water can be improved, and the recycling sufficiency of the steam can be further improved.

Specifically, the bottom of lug 15 is coniform, conveniently discharges the steam after liquefying on the liquefaction board, can also improve the liquefaction area of steam, has improved the efficiency that the steam liquefaction was retrieved.

Specifically, a temperature sensor 18 is fixedly mounted on the inner wall of the center of the bottom of the heat preservation shell 17, and a water level sensor 19 is fixedly mounted on the inner wall of one side of the bottom of the heat preservation shell 17.

Specifically, the bottom fixed mounting of recovery water tank 5 has support base 11, one side fixed mounting that recovery water tank 5 was kept away from at support base 11 top has work soft water groove 12, the top fixed mounting of recovery water tank 5 and work soft water groove 12 has same recovery water pipe 9, the one end of recovery water pipe 9 extends to the bottom of recovery water tank 5, the one end fixed mounting that recovery water pipe 9 is located recovery water tank 5 inside has suction pump 20, bottom position fixed mounting that recovery water tank 5 one side was kept away from to work soft water groove 12 has aqueduct 13, the soft water after will heating is taken back to in the work soft water groove, be used for boiler steam water, be used for improving ton coal steam production volume.

Specifically, the inner walls of the boiler sub-cylinder 1 and the recovery water pipe 9 are provided with the heat preservation layers 21, so that heat loss is reduced, and the waste heat recovery effect is improved.

Specifically, a stop valve 2 is fixedly installed at the top of a boiler cylinder 1, a first electric regulating valve 3 is fixedly installed at the position of one side of the stop valve 2, which is positioned at the top of the boiler cylinder 1, a pressure reducing valve 4 is fixedly installed at the position of one side of the first electric regulating valve 3, which is positioned at the top of the boiler cylinder 1, a second electric regulating valve 8 is fixedly installed at the top of a recovery water pipe 9, a DCS controller 10 is fixedly installed at the outer wall of one end of a recovery water tank 5, and instruments such as the first electric regulating valve 3, the second electric regulating valve 8, the stop valve 2, the pressure reducing valve 4, a temperature sensor 18 and a water level sensor 19 are uniformly controlled by the DCS controller 10, the regulating valve of the boiler is integrally controlled by DCS and automatically regulated according to the pressure of the boiler and the running condition of the paper machine, the water supply valve regulating valve is controlled by the liquid level of the recovery water tank, and the hot water outlet regulating valve is controlled according to the temperature of the recovery water tank and the liquid level of the working soft water tank.

The working principle is as follows: a boiler steam distributing cylinder 1 at the outlet of a boiler is directly connected with a pipeline to go deep into a recovery water tank 5, the pipeline is provided with a stop valve 2, a first electric regulating valve 3 and a pressure reducing valve 4, the tail end of the pipeline is provided with a rotary type noise elimination heater 14, the pipeline and the recovery water tank 5 are well insulated, and meanwhile, the recovery water tank 5 is provided with a temperature sensor 18 and a water level sensor 19. The recovery water tank 5 is provided with a soft water adding pipeline and needs to be provided with a soft water preparation system. At the same time, the outlet water discharges the heated soft water into the working soft water tank 12 for boiler use by using the suction pump 20 or the regulating valve to generate steam. The monitoring control of the whole system is controlled by a DCS control system and is interlocked with corresponding parameters.

The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a steam recovery device, includes recovery tank (5), its characterized in that, top one side fixed mounting of recovery tank (5) has boiler steam distributing cylinder (1), boiler steam distributing cylinder (1) extends to the bottom of recovery tank (5), the circumference bottom inner wall fixed mounting of boiler steam distributing cylinder (1) has bracing piece (22) that the level set up, the bottom central point of bracing piece (22) rotates and is provided with dwang (23), and the outer fixed mounting of circumference of dwang (23) has helical blade (24), the bottom fixed mounting of dwang (23) has rotary noise elimination heater (14), the inner wall of recovery tank (5) has cup jointed heat preservation casing (17), the top position department fixed mounting of heat preservation casing (17) inside wall has liquefaction board (16), and liquefaction board (16) become the notch form, the water recycling device is characterized in that a drain hole is formed in the central position of the bottom of the liquefaction plate (16), evenly-arranged convex blocks (15) are fixedly installed at the bottom of the liquefaction plate (16), a water inlet pipe (7) is fixedly installed at the central position of the top of the recycling water tank (5), and a water inlet pipe cover (6) is fixedly installed at the top of the water inlet pipe (7).

2. A steam recovery device according to claim 1, characterized in that the side wall of the rotary muffling heater (14) is fixedly provided with a plurality of stirring rods (26) distributed in an annular array.

3. The steam recovery device according to claim 2, wherein the stirring rod (26) is folded, and one end of the stirring rod (26) is provided with a plurality of water guide holes (25) distributed at equal intervals.

4. A vapour recovery device according to claim 3, wherein the water guiding holes (25) are hourglass shaped.

5. A vapour recovery device according to claim 1, wherein the bottom of the projection (15) is conical.

6. The steam recovery device according to claim 1, wherein a temperature sensor (18) is fixedly arranged on the central inner wall of the bottom of the heat-insulating shell (17), and a water level sensor (19) is fixedly arranged on the inner wall of one side of the bottom of the heat-insulating shell (17).

7. The steam recovery device according to claim 1, wherein a supporting base (11) is fixedly mounted at the bottom of the water recovery tank (5), a working soft water tank (12) is fixedly mounted at one side, away from the water recovery tank (5), of the top of the supporting base (11), the same water recovery pipe (9) is fixedly mounted at the tops of the water recovery tank (5) and the working soft water tank (12), one end of the water recovery pipe (9) extends to the bottom of the water recovery tank (5), a water suction pump (20) is fixedly mounted at one end, located inside the water recovery tank (5), of the water recovery pipe (9), and a water guide pipe (13) is fixedly mounted at the bottom, away from the water recovery tank (5), of the working soft water tank (12).

8. A steam recovery device according to claim 7, characterized in that the inner walls of the boiler gas cylinder (1) and the recovery water pipe (9) are provided with insulating layers (21).

9. The steam recovery device according to claim 8, wherein the top of the boiler branch cylinder (1) is fixedly provided with a stop valve (2), the top of the boiler branch cylinder (1) is fixedly provided with a first electric regulating valve (3) at one side of the stop valve (2), the top of the boiler branch cylinder (1) is fixedly provided with a pressure reducing valve (4) at one side of the first electric regulating valve (3), and the top of the recovery water pipe (9) is fixedly provided with a second electric regulating valve (8).

10. A steam recovery device according to claim 9, wherein a DCS controller (10) is fixedly installed on an outer wall of one end of the recovery water tank (5).