CN216952637U

CN216952637U - Flash evaporation type temperature and pressure reducing device

Info

Publication number: CN216952637U
Application number: CN202220851496.3U
Authority: CN
Inventors: 李崇贵; 卢涛; 陶洳兄; 田源
Original assignee: Neimenggu Dadiyuntian Chemical Co ltd
Current assignee: Neimenggu Dadiyuntian Chemical Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-07-12
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses a flash evaporation type temperature and pressure reducing device which comprises a tank body, a circulating guide cylinder, a steam inlet pipeline, a steam outlet pipeline, a water replenishing pipeline and a sewage draining pipeline. Has the advantages that: 1. the high-pressure steam can be converted into pure saturated steam, and the temperature of the output steam is ensured to be the steam temperature corresponding to the saturated steam pressure under the pressure; 2. the steam storage function is realized, the utilization rate of steam is improved, the steam consumption is reduced, and meanwhile, the steam pressure can be stabilized, so that the stability of the temperature of output steam is ensured; 3. the effect of reducing noise is achieved by arranging the circulating guide cylinder and arranging the circulating holes on the wall of the circulating guide cylinder; 4. through setting up the moisturizing ring canal of intaking to set up the hole for water spraying on the moisturizing ring canal of intaking, noise when having reduced the moisturizing.

Description

Flash evaporation type temperature and pressure reducing device

The technical field is as follows:

the utility model relates to the technical field of temperature and pressure reduction, in particular to a flash evaporation type temperature and pressure reduction device.

Background art:

the temperature and pressure reducing device is a steam heat energy parameter conversion device, is widely applied to the industries of cogeneration, central heating, light industry, electric power, chemical industry, textile and the like, and can convert steam parameters into proper temperature and pressure so as to meet different requirements and reasonably use heat energy. Most of the traditional temperature and pressure reducing devices are pipeline type, and steam flows through the throttling orifice of the temperature and pressure reducing device at high speed and is cooled by water spraying. Because the steam after temperature and pressure reduction directly enters the heat utilization equipment, the steam and the water spray are mixed unevenly, so that the actual temperature of the steam at the outlet of the temperature and pressure reduction device is not the steam temperature corresponding to the saturated steam pressure under the pressure. In addition, because the steam velocity of flow is fast, the temperature that detects the control changes along with the fast flow of steam, and the temperature is unstable, and along with the continuous flow of steam, the steam temperature can constantly reduce to along with the increase of flow distance, the temperature deviation increases, causes the heat transfer needs that the steam enthalpy can not satisfy the technology material. The traditional temperature and pressure reducing device also has the problems that the steam temperature is unstable due to the action lag of a water spraying regulating valve and the flowing noise of the steam exceeds the standard due to the overhigh flow velocity of the steam.

The utility model has the following contents:

the utility model aims to provide a flash evaporation type temperature and pressure reducing device.

The utility model is implemented by the following technical scheme: a flash evaporation type temperature and pressure reducing device comprises a tank body, a circulation guide cylinder, a steam inlet pipeline, a steam outlet pipeline, a water supplementing pipeline, a sewage discharge pipeline, a steam inlet valve, a steam outlet valve, a water supplementing valve and a sewage discharge valve; the circulating guide cylinder is of a hollow structure with a closed top and an open bottom, a plurality of circulating holes are uniformly formed in the cylinder body of the circulating guide cylinder along the circumferential direction, and the circulating guide cylinder is fixedly arranged in the tank body; the steam outlet end of the steam inlet pipeline penetrates through the top of the tank body and extends to the interior of the circulating guide cylinder, and the steam inlet valve is arranged on the steam inlet pipeline; the top of the tank body is provided with a steam outlet which is communicated with the steam outlet pipeline, and the steam outlet pipeline is provided with the steam outlet valve; the water outlet end of the water replenishing pipeline penetrates through the side wall of the tank body and extends into the tank body, and the water replenishing valve is arranged on the water replenishing pipeline; the lower part of the tank body is provided with a drain outlet which is communicated with the drain pipeline, and the drain pipeline is provided with the drain valve.

Preferably, the top of the tank body is a dome.

Preferably, a steam outlet end of the steam inlet pipeline is provided with a steam nozzle group.

Preferably, the bottom of the circulating guide cylinder is in a bell mouth shape.

Preferably, a water replenishing water inlet ring pipe is arranged inside the tank body and communicated with the water replenishing pipeline, and a plurality of water spraying holes are formed in the pipe wall of the water replenishing water inlet ring pipe.

Preferably, the device also comprises a liquid level meter, a first pressure sensor, a second pressure sensor and a PLC controller; the liquid level meter is arranged at the upper part of the tank body, the first pressure sensor is arranged on the steam inlet pipeline between the steam inlet valve and the tank body, and the second pressure sensor is arranged on the steam outlet pipeline at one side of the steam outlet valve away from the tank body;

the signal output ends of the liquid level meter, the first pressure sensor and the second pressure sensor are connected with the signal input end of the PLC controller, and the signal output end of the PLC controller is connected with the signal input ends of the steam inlet valve, the steam outlet valve, the water replenishing valve and the blow-down valve.

The utility model has the advantages that: a flash evaporation temperature and pressure reduction device 1 can convert high-pressure steam into pure saturated steam, and can ensure that the temperature of output steam is the steam temperature corresponding to the saturated steam pressure under the pressure by adjusting the pressure; 2. the steam storage function is realized, the pressure and the liquid level can be automatically adjusted through linkage of each valve with the pressure and the liquid level, high-pressure steam can be converted into superheated water when the steam is rich, saturated water can be converted into steam and conveyed to a steam utilization system when the steam is in short supply, the utilization rate of the steam is improved, the steam consumption is reduced, the steam pressure can be stabilized, and the stability of the temperature of the output steam is further ensured; 3. the circulating guide shell is arranged, and the wall of the circulating guide shell is provided with the circulating hole, so that steam and water are fully mixed, and meanwhile, a water body absorbs part of steam flowing noise and obstructs noise transmission, so that the effect of reducing noise is achieved; 4. through setting up the moisturizing ring canal of intaking to set up the hole for water spraying on the moisturizing ring canal of intaking, can disperse rivers, make the moisturizing evenly dissolve into the internal aquatic of jar, noise when having reduced the moisturizing simultaneously.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the present embodiment;

FIG. 2 is a schematic diagram of signal transmission of the automatic control assembly of the present embodiment;

in the figure: 1. the steam-water-supply system comprises a tank body, 2, a circulating guide cylinder, 3, a steam inlet pipeline, 4, a steam outlet pipeline, 5, a water-supply pipeline, 6, a sewage discharge pipeline, 7, a liquid level meter, 8, a first pressure sensor, 9, a second pressure sensor, 10, a PLC (programmable logic controller), 11, a steam inlet valve, 12, a steam outlet valve, 13, a water-supply valve, 14, a sewage discharge valve, 15, a steam nozzle group, 16, a circulating hole, 17, a water-supply water inlet ring pipe, 18 and a water spray hole.

The specific implementation mode is as follows:

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

as shown in fig. 1-2, a flash evaporation type temperature and pressure reducing device comprises a tank body 1, a circulation guide cylinder 2, a steam inlet pipeline 3, a steam outlet pipeline 4, a water supplementing pipeline 5, a sewage discharge pipeline 6, a liquid level meter 7, a first pressure sensor 8, a second pressure sensor 9, a PLC controller 10, a steam inlet valve 11, a steam outlet valve 12, a water supplementing valve 13 and a sewage discharge valve 14.

The top of the tank body 1 is a dome, and the upper part of the tank body 1 is provided with a liquid level meter 7. The steam inlet end of the steam inlet pipeline 3 is communicated with the steam main pipe, the steam outlet end of the steam inlet pipeline 3 is provided with a steam nozzle group 15, the steam outlet end of the steam inlet pipeline 3 extends to the inside of the tank body 1 and is communicated with the top of the circulating guide cylinder 2, the bottom of the circulating guide cylinder 2 is a horn mouth, and a plurality of circulating holes 16 are uniformly formed in the cylinder body of the circulating guide cylinder 2. A first pressure sensor 8 and a steam inlet valve 11 are sequentially arranged on the steam inlet pipeline 3 on the outer side of the tank body 1 along the steam inflow direction; the steam outlet pipeline 4 is arranged at the top of the tank body 1, and a steam outlet valve 12 and a second pressure sensor 9 are sequentially arranged on the steam outlet pipeline 4 along the steam outflow direction; the water replenishing pipeline 5 is arranged on the side face of the tank body 1, the water replenishing valve 13 is arranged on the water replenishing pipeline 5, a water replenishing and water feeding circular pipe 17 is arranged inside the tank body 1, the water replenishing and water feeding circular pipe 17 is communicated with the water replenishing pipeline 5, and a plurality of water spraying holes 18 are formed in the pipe wall of the water replenishing and water feeding circular pipe 17; the sewage draining pipeline 6 is arranged at the lower part of the tank body 1, and a sewage draining valve 14 is arranged on the sewage draining pipeline 6.

The signal output ends of the liquid level meter 7, the first pressure sensor 8 and the second pressure sensor 9 are connected with the signal input end of the PLC 10, and the signal output end of the PLC 10 is connected with the signal input ends of the steam inlet valve 11, the steam outlet valve 12, the water replenishing valve 13 and the blow-down valve 14.

The working description is as follows: the upper part of the tank body 1 of the flash evaporation type temperature and pressure reducing device is provided with a steam space, the lower part of the tank body is provided with water, and the liquid level of the water is always kept above the top of the circulating guide cylinder 2. The steam inlet valve 11 is opened, high-pressure steam enters the steam inlet pipeline 3 from the steam main pipe and then enters the circulating guide cylinder 2 through the nozzle group, flows outwards along the circulating hole 16 on the circulating guide cylinder 2 and is fully mixed with water to obtain saturated water, and the water can absorb part of noise and block the transmission of the noise, so that the effect of reducing the noise is achieved. After the steam outlet valve 12 is opened, the saturated water is vaporized into saturated steam and enters the heat utilization equipment, when the steam pressure detected by the second pressure sensor 9 reaches a preset pressure, the opening degree of the steam outlet valve 12 is fixed, and at the moment, the steam temperature is the corresponding saturated steam temperature under the preset pressure, so that the steam utilization requirement is met.

When the flash evaporation type temperature and pressure reducing device normally operates, when the liquid level meter 7 detects that the liquid level in the tank body 1 is the lowest liquid level, the water supplementing valve 13 is opened to supplement water to the tank body 1, the water supplement is desalted water, until the liquid level meter 7 detects that the liquid level in the tank body 1 is the highest liquid level, the water supplementing valve 13 is closed, and saturated water under the pressure detected by the first pressure sensor 8 is filled in the tank body 1. The water feeding ring pipe 17 is provided with the water spraying holes 18, so that water feeding flow can be dispersed, water can be uniformly dissolved into saturated water, and noise can be reduced.

When the steam consumption is increased and the high-pressure steam cannot be supplemented in time, the saturated water in the tank body 1 is vaporized into saturated steam, the steam consumption requirement is continuously met, the time is strived for the high-pressure steam system to adjust, and the pressure of a steam pipe network is stabilized; when the steam consumption is reduced and the pressure of the high-pressure steam system is not reduced in time, the saturated water in the tank body 1 continuously absorbs the high-pressure steam, meanwhile, the liquid level in the tank body 1 rises, when the liquid level detected by the liquid level meter 7 reaches the highest liquid level, the drain valve 14 and the water replenishing valve 13 are simultaneously opened, the high-temperature saturated water is discharged through the drain valve 14 and is used for boiler water supply, the newly replenished water is used for absorbing the high-pressure steam, therefore, the pressure of a steam pipe network is stabilized, surplus steam is absorbed, the utilization rate of the steam is improved, the consumption is reduced, when the pressure detected by the first pressure sensor 8 is reduced to a preset value, the drain valve 14 is closed, and when the liquid level reaches the highest liquid level, the water replenishing valve 13 is closed. In flash distillation formula temperature and pressure reduction means, can change high-pressure steam into pure saturated steam, can guarantee the steam temperature that the temperature of output steam corresponds for saturated steam pressure under the default pressure, the function of storing up vapour has simultaneously, through each valve and pressure, the liquid level is chain, can realize automatically regulated pressure and liquid level, when steam is abundant, can change high-pressure steam into superheated water, when steam is in short supply, saturated water can change into steam and carry to the steam system, the utilization ratio of steam has been improved, reduce steam consumption, can stabilize steam pressure simultaneously, and then guarantee the stability of output steam temperature.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A flash evaporation type temperature and pressure reducing device is characterized by comprising a tank body, a circulating guide cylinder, a steam inlet pipeline, a steam outlet pipeline, a water supplementing pipeline, a sewage discharging pipeline, a steam inlet valve, a steam outlet valve, a water supplementing valve and a sewage discharging valve; the circulating guide cylinder is of a hollow structure with a closed top and an open bottom, a plurality of circulating holes are uniformly formed in the cylinder body of the circulating guide cylinder along the circumferential direction, and the circulating guide cylinder is fixedly arranged in the tank body; the steam outlet end of the steam inlet pipeline penetrates through the top of the tank body and extends to the interior of the circulating guide cylinder, and the steam inlet valve is arranged on the steam inlet pipeline; the top of the tank body is provided with a steam outlet which is communicated with the steam outlet pipeline, and the steam outlet pipeline is provided with the steam outlet valve; the water outlet end of the water replenishing pipeline penetrates through the side wall of the tank body and extends into the tank body, and the water replenishing valve is arranged on the water replenishing pipeline; the lower part of the tank body is provided with a drain outlet which is communicated with the drain pipeline, and the drain pipeline is provided with the drain valve.

2. A flash desuperheater and pressure reducer according to claim 1, wherein a top of the tank is domed.

3. A flash vaporization temperature and pressure reducing device according to claim 1, wherein a steam nozzle set is provided at the steam outlet end of the steam inlet pipe.

4. A flash vaporization type temperature and pressure reducing device according to claim 1, wherein the bottom of the circulation guide shell is flared.

5. A flash evaporation type temperature and pressure reducing device according to claim 1, wherein a water feeding ring pipe is arranged inside the tank body, the water feeding ring pipe is communicated with the water feeding pipeline, and a plurality of water spraying holes are arranged on the pipe wall of the water feeding ring pipe.

6. A flash vaporization type temperature and pressure reducing device according to any one of claims 1 to 5, further comprising a liquid level meter, a first pressure sensor, a second pressure sensor, a PLC controller; the liquid level meter is arranged at the upper part of the tank body, the first pressure sensor is arranged on the steam inlet pipeline between the steam inlet valve and the tank body, and the second pressure sensor is arranged on the steam outlet pipeline at one side of the steam outlet valve away from the tank body;