CN213747783U

CN213747783U - Grain is dried and is used steam supply system

Info

Publication number: CN213747783U
Application number: CN202022724672.0U
Authority: CN
Inventors: 潘俊; 苏锋; 王东; 赵国祥
Original assignee: Zhangjiagang Grain Purchase And Sale General Co
Current assignee: Zhangjiagang Grain Purchase And Sale General Co
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-20
Anticipated expiration: 2030-11-23

Abstract

The utility model relates to a grain field of drying especially relates to a grain is dried and is used steam supply system, and this system can effectively solve steam temperature and influence stoving effect and the problem that steam temperature still higher caused the energy waste after drying greatly. Including the main supply system of steam, the main supply system of steam is connected with the drying-machine through the main steam pipeline, be equipped with the steam mixing pipeline on the main steam pipeline, steam mixing pipeline one side is connected with main feed pipe outlet end, main feed pipe inlet end is connected with first branch feed pipe and second branch feed pipe outlet end through first tee bend, first branch feed pipe and second branch feed pipe inlet end are connected with two openings of second tee bend, another opening of second tee bend is connected with desuperheating water tank, main feed pipe one side is connected with desuperheating water tank through the wet return, desuperheating water tank is connected with condensate recovery pond through the comdenstion water supply pipe. The drying device is simple to install, convenient to use and suitable for drying various grains.

Description

Grain is dried and is used steam supply system

Technical Field

The utility model relates to a grain field of drying specifically is a grain is dried and is used steam supply system.

Background

Grain need pass through multiprocessing before the granary is stored in income, wherein just need utilize the drying-machine to dry, and the use of drying-machine needs utilize steam, and steam enters into the heat in the drying-machine back steam and heats grain, has become the comdenstion water after the steam temperature reduces. The current steam supply system directly utilizes steam supplied by a steam supply factory to supply the steam to the dryer through a pipeline and a control valve, the designed steam demand parameters of the grain dryer are 0.35-0.6MPa of pressure and 150-180 ℃, the actual heat supply pressure is 1.6-2 MPa and the temperature is 280-300 ℃, and the temperature is far higher than the designed demand pressure, and the parameters are extremely unfavorable for the safety of a heat exchanger of the dryer, so that the thermal stress of a welding port and a sealing part of the heat exchanger is overhigh, cracking and even steam leaks to a hot air side, and the equipment safety is endangered. Meanwhile, due to the overhigh primary side steam parameter, the secondary side air temperature control is unstable, grains are unshelled due to local overtemperature, the grains are heated too fast, even the grains are cracked, the grain production quality is affected, and energy waste is also caused.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a grain is dried and is used steam supply system, this system can effectively solve steam temperature too big influence stoving effect and the problem that steam temperature still higher caused the energy waste after drying.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a grain is dried and is used steam supply system, includes the main supply system of steam, and the main supply system of steam is connected with the steam inlet of drying-machine through the main pipeline of steam, its characterized in that: a steam mixing pipeline is arranged on the steam main pipeline, one side of the steam mixing pipeline is connected with the water outlet end of a main water supply pipe, the water inlet end of the main water supply pipe is connected with the water outlet ends of a first branch water supply pipe and a second branch water supply pipe through a first tee joint, the water inlet ends of the first branch water supply pipe and the second branch water supply pipe are connected with two openings of a second tee joint, the other opening of the second tee joint is connected with a water supply pipeline of a temperature reduction water tank, the left main feed pipe of first tee bend on be equipped with feed water governing valve and check valve along the rivers direction in order, main feed pipe one side between feed water governing valve and the first tee bend is connected with the desuperheating water tank through the wet return, is equipped with the choke valve on the wet return, the desuperheating water tank is connected with the comdenstion water recovery pond through the comdenstion water supply pipe, the comdenstion water recovery pond is connected with the comdenstion water delivery pipe of drying-machine, desuperheating water tank one side still be connected with the running water moisturizing pipe.

Preferably, the first branch feed pipe and the second branch feed pipe are the same in structure, and an upstream stop valve, a filter, a feed pump, a check valve and a downstream stop valve are sequentially arranged on the pipeline along the water flow direction.

Preferably, the water outlet end of the main water supply pipe is provided with an atomizing nozzle.

Preferably, a condensed water replenishing pump is arranged on the condensed water supply pipe, a liquid level meter is arranged in the condensed water recovery pool, the liquid level meter and the condensed water replenishing pump are connected with the control cabinet through a circuit, and the control cabinet is further connected with the liquid level meter arranged in the temperature reduction water tank through a circuit.

Preferably, a pressure reducing valve is arranged on the main steam pipeline.

Preferably, the throttle valve is an electromagnetic valve.

Preferably, the upper end part of the side wall at one side of the temperature-reducing water tank is also provided with an overflow port.

Compared with the prior art, the utility model provides a grain is dried and is used steam supply system possesses following beneficial effect:

1. the utility model discloses a setting of desuperheating water tank, main feed pipe, first branch feed pipe and second branch feed pipe can reduce the temperature of steam through main feed pipe moisturizing in to steam mixing pipeline at ordinary times, when first branch feed pipe breaks down, can close first branch feed pipe, opens the second and divides the feed pipe, can guarantee the continuous drying of grain.

2. The utility model discloses a comdenstion water recovery pond is connected with the desuperheating water tank, then can reduce the temperature of desuperheating water tank, and the desuperheating water tank is equipped with the running water moisturizing pipe, then can adjust the temperature of desuperheating water tank through replenishing the running water, so circulate to the cost is reduced, the energy of comdenstion water can be recycled, reach the high efficiency and combine the effect of using heat, the effect of drying is also better, final exhaust steam temperature is lower, more energy-conservation.

3. The utility model discloses a main feed pipe and the drain opening department of dividing the feed pipe are equipped with atomizer for the water of replenishment forms steam, has replenished the steam volume, thereby promotes the stoving effect.

4. The utility model discloses a be equipped with the choke valve on the wet return, during the use, the choke valve is closed state at ordinary times, and when components and parts on the steam trunk line broke down, the closing time of feed pump had the lag, can close the water supply governing valve on the main feed pipe this moment, opens the choke valve on the wet return, and water can flow back in the desuperheating water tank like this to convenient subsequent maintenance.

Drawings

Fig. 1 is a schematic view of a partial structure of the present invention;

fig. 2 is a schematic view of a partial structure of the present invention.

The following are marked in the figure: 1. a pressure reducing valve; 2. a steam mixing pipe; 3. an atomizing spray head; 4. a pressure gauge; 5. a thermometer; 6. an upstream shutoff valve; 7. a filter; 8. a feed pump; 9. a check valve; 10. a downstream shut-off valve; 11. a throttle valve; 12. a feed water regulating valve; 13. a main water supply pipe; 14. a first branch water supply pipe; 15. a second branch water supply pipe; 16. a water return pipe; 17. a temperature-reducing water tank; 18. a control cabinet; 19. a condensate water recovery pool; 20. a condensed water supply pipe; 21. a liquid level meter; 22. and a condensed water replenishing pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2 (fig. 1 and fig. 2 are combined to form a complete structural schematic diagram of the present invention), a steam supply system for grain drying comprises a main steam supply system (not shown in the figure), the main steam supply system is connected to a steam inlet of a dryer (not shown in the figure) through a main steam pipe (not separately marked in the figure), the main steam pipe is provided with a steam mixing pipe 2 (provided with a pressure gauge 4 and a temperature gauge 5), one side of the steam mixing pipe 2 is connected to a water outlet of a main water supply pipe 13, a water inlet of the main water supply pipe 13 is connected to water outlets of a first branch water supply pipe 14 and a second branch water supply pipe 15 through a first tee joint (not separately marked in the figure), the water inlets of the first branch water supply pipe 14 and the second branch water supply pipe 15 are connected to two openings of a second tee joint (not separately marked in the figure), the other opening of the second tee joint is connected to a water supply pipeline of a desuperheating water tank 17, the main water supply pipe 13 on the left side (low reaches) of the first tee joint is sequentially provided with a water supply regulating valve 12 and a check valve 9 along the water flow direction, one side of the main water supply pipe 13 between the water supply regulating valve 12 and the first tee joint is connected with a desuperheating water tank 17 through a water return pipe 16, the water return pipe 16 is provided with a throttle valve 11, the desuperheating water tank 17 is connected with a condensate water recovery pool 19 through a condensate water supply pipe 20, the condensate water recovery pool 19 is connected with a condensate water discharge pipe (not shown in the figure) of the drying machine, and one side of the desuperheating water tank 17 is also connected with a tap water replenishing pipe (not separately marked in the figure).

In the above embodiment, specifically, the first branch water supply pipe 14 and the second branch water supply pipe 15 have the same structure, and the upstream stop valve 6, the filter 7, the water supply pump 8, the check valve 9 and the downstream stop valve 10 are sequentially arranged on the pipelines along the water flow direction.

In the above embodiment, specifically, the water outlet end of the main water supply pipe 13 is provided with the atomizing nozzle 3 (prior art).

In the above embodiment, specifically, the condensed water supply pipe 20 is provided with a condensed water replenishing pump 22, the condensed water recovery tank 19 is provided with a liquid level meter 21 (low water level is not started), the liquid level meter 21 and the condensed water replenishing pump 22 are connected with the control cabinet 18 through a line, and the control cabinet 18 is further connected with the liquid level meter 21 arranged in the desuperheating water tank 17 through a line (low water level is started, high temperature water is stopped).

In the above embodiment, specifically, the main steam pipeline is provided with a pressure reducing valve 1.

In the above embodiment, more specifically, the throttle valve 11 is an electromagnetic valve.

In the above embodiment, more specifically, the upper end of the sidewall of one side of the temperature-reduced water tank 17 is further provided with an overflow port (not separately labeled).

The working principle is as follows: firstly, tap water is supplied to a temperature-reducing water tank 17 to meet the primary use, then a main steam supply system supplies steam to a grain dryer through a main steam pipeline, a pressure reducing valve 1 is arranged on the main steam pipeline to reduce the pressure of the steam, in the supply process, a water feed pump 8 on a first branch water feed pipe 14 or a second branch water feed pipe 15 is selected to be opened, temperature-reducing water is pumped out of the temperature-reducing water tank 17 and sent to an atomizing nozzle 3 in a steam mixing pipeline 2 through a main water feed pipe 13 to be atomized, the temperature of the steam is reduced, the grain drying requirement is met, and condensed water obtained by the dryer is recovered into a condensed water recovery water tank 19 to be collected and used as a subsequent water supplementing source; the filters 7 on the first branch water supply pipe 14 and the second branch water supply pipe 15 can filter impurities in water, so that the atomizing nozzle 3 is prevented from being blocked; when parts on the first branch water supply pipe 14 or the second branch water supply pipe 15 need to be maintained or replaced, the other branch water supply pipe is directly switched to meet continuous water supply; when the main steam pipe or the atomizing nozzle 3 needs to be replaced, the water supply pump 8 stops and possibly lags, so that the water supply adjusting valve 12 on the main water supply pipe 13 can be directly closed, then the throttle valve 11 on the water return pipe 16 is opened, water flows out from the first branch water supply pipe 14 or the second branch water supply pipe 15 and flows back to the desuperheating water tank 17 through the water return pipe 16, and maintenance and repair of devices on the main steam pipe are facilitated. All be provided with level gauge 21 on condensate recovery pond 19 and the temperature reduction water tank 17 to set up the comdenstion water moisturizing pump 22 in the condensate recovery pond 19, receive the liquid level signal of level gauge 21 transmission through switch board 18 and control the opening and stop of comdenstion water moisturizing pump 22, realize automatic water supply.

The components used in the present invention are all common standard components or components known to those skilled in the art, and the structure and principle thereof are well known to those skilled in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a grain is dried and is used steam supply system, includes the main supply system of steam, and the main supply system of steam is connected with the steam inlet of drying-machine through the main pipeline of steam, its characterized in that: a steam mixing pipeline is arranged on the steam main pipeline, one side of the steam mixing pipeline is connected with the water outlet end of a main water supply pipe, the water inlet end of the main water supply pipe is connected with the water outlet ends of a first branch water supply pipe and a second branch water supply pipe through a first tee joint, the water inlet ends of the first branch water supply pipe and the second branch water supply pipe are connected with two openings of a second tee joint, the other opening of the second tee joint is connected with a water supply pipeline of a temperature reduction water tank, the left main feed pipe of first tee bend on be equipped with feed water governing valve and check valve along the rivers direction in order, main feed pipe one side between feed water governing valve and the first tee bend is connected with the desuperheating water tank through the wet return, is equipped with the choke valve on the wet return, the desuperheating water tank is connected with the comdenstion water recovery pond through the comdenstion water supply pipe, the comdenstion water recovery pond is connected with the comdenstion water delivery pipe of drying-machine, desuperheating water tank one side still be connected with the running water moisturizing pipe.

2. The steam supply system for drying grain of claim 1, wherein: the first branch water supply pipe and the second branch water supply pipe are the same in structure, and an upstream stop valve, a filter, a water supply pump, a check valve and a downstream stop valve are sequentially arranged on the pipeline along the water flow direction.

3. The steam supply system for drying grain of claim 1, wherein: and an atomizing spray head is arranged at the water outlet end of the main water supply pipe.

4. The steam supply system for drying grain of claim 1, wherein: the condensed water supply pipe is provided with a condensed water replenishing pump, a liquid level meter is arranged in the condensed water recovery pool, the liquid level meter and the condensed water replenishing pump are connected with the control cabinet through a circuit, and the control cabinet is also connected with the liquid level meter arranged in the temperature reduction water tank through a circuit.

5. The steam supply system for drying grain of claim 1, wherein: and a pressure reducing valve is arranged on the main steam pipeline.

6. The steam supply system for drying grain of claim 1, wherein: the throttle valve is an electromagnetic valve.

7. The steam supply system for drying grain of claim 1, wherein: the upper end part of the side wall at one side of the temperature-reducing water tank is also provided with an overflow port.