阅读说明：本技术 一种零漏汽多级疏水系统及工作方法 (Zero-steam-leakage multistage drainage system and working method ) 是由 夏君君 彭涛 尹海蛟 全晓宇 于会满 唐昊 刘莉 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种零漏汽多级疏水系统及工作方法,由汽水分离罐,过滤网,液位计,疏水阀,电磁阀组成；系统采用液封及节流孔板双级疏水措施,保证系统工作的零漏汽效果。通过节流孔板的被动式节流实现高低压的节流降压,系统节流降压部分无机械运动部件,且保证了电磁阀位于无压差条件下运行,保证了其工作稳定性,同时采用过滤网去除凝液中的各类污垢,保证了节流阀无堵塞风险。本发明的多级疏水系统具有运行可靠、维护方便、使用寿命长、零漏汽率等特点。(The invention discloses a zero-steam-leakage multistage drainage system and a working method thereof, wherein the system consists of a steam-water separation tank, a filter screen, a liquid level meter, a drainage valve and an electromagnetic valve; the system adopts a liquid seal and throttling orifice two-stage drainage measure, and the zero steam leakage effect of the system work is ensured. The high-low pressure throttling and pressure reducing are realized through the passive throttling of the throttling orifice plate, the throttling and pressure reducing part of the system has no mechanical moving part, the solenoid valve is ensured to operate under the condition of no pressure difference, the working stability of the system is ensured, and meanwhile, various kinds of dirt in condensate are removed through the filter screen, so that the throttling valve is ensured to have no blocking risk. The multi-stage drainage system has the characteristics of reliable operation, convenient maintenance, long service life, zero steam leakage rate and the like.)

1. The utility model provides a multistage drainage system of zero steam leakage which characterized in that: comprises a steam-water separation tank, a filter screen, a liquid level meter, a drain valve and an electromagnetic valve;

the steam-water separation tank is of an upright cylindrical structure, a condensate inlet is formed in the top of the steam-water separation tank, the liquid level meter is arranged on the side wall of the steam-water separation tank, a condensate outlet is formed in the bottom of the steam-water separation tank, and the filter screen is arranged above the inside of the cylindrical structure;

a condensate outlet at the bottom of the steam-water separation tank is connected with the drain valve, and the drain valve is connected with the electromagnetic valve; the drain valve is of a pore plate type structure.

2. The zero-steam-leakage multistage drainage system according to claim 1, characterized in that: the trap adopts single-stage or multi-stage throttling mode.

3. The zero-steam-leakage multistage drainage system according to claim 2, characterized in that: when the drain valve adopts a multi-stage orifice plate for throttling, the throttling hole is concentrically or eccentrically arranged.

4. A method of operation of a zero-leakage multistage hydrophobic system as claimed in any one of claims 1 to 3, characterized in that: steam-containing condensate water discharged by heating equipment enters a steam-water separation tank, rust and dirt in the condensate are removed through a filter screen, then the condensate enters a drain valve for throttling and reducing pressure to discharge pressure, a liquid level meter monitors the height of the liquid level in the steam-water separation tank, the electromagnetic valve is opened when the liquid level reaches the upper limit of the liquid level, the condensate is discharged from a system, and the electromagnetic valve is closed when the liquid level reaches the lower limit of the liquid level.

Technical Field

The invention relates to a drainage system, in particular to a zero-steam-leakage multi-stage drainage system and a working method, and belongs to the technical field of drainage valves.

Background

The drainage system is widely applied to the industrial field, and the drainage system mainly has the functions of discharging condensate of the system and preventing heating steam from leaking out, so that the effective utilization rate of the steam is improved. Conventional steam traps include ball floats, thermal, and the like. As the conventional steam trap mostly adopts a mechanical motion structure, the problems of blockage of the steam trap or large steam leakage rate and the like are often caused by the long-term frequent action of mechanical parts, rust dirt and other factors in a condensation system, and the steam leakage rate of the conventional steam trap is generally 3-5%. Therefore, the reliability of the steam trap is improved, the steam leakage rate of the steam trap is reduced, and the steam trap has important significance for energy conservation and consumption reduction in the technical field of industrial steam heating. The patent with application number 201910717207.3 discloses "a visible steam trap of liquid level", its valve through liquid level control condensate discharge pipe opens, realizes the function that the drainage blocked vapour through the liquid seal in the knockout drum. However, when the method is applied to the working condition that the pressure difference before and after drainage is large, the pressure difference in the system can be completely acted on the valve body of the valve on the condensate pipeline, and the high pressure difference can influence the normal opening and closing of the valve body and even cause the system to be incapable of running normally.

Disclosure of Invention

The invention aims to provide a zero-steam-leakage multi-stage drainage system and a working method thereof aiming at the defects of the traditional technology.

The utility model provides a multistage drainage system of zero steam leakage which characterized in that: comprises a steam-water separation tank, a filter screen, a liquid level meter, a drain valve and an electromagnetic valve.

The steam-water separation tank is of an upright cylindrical structure, a condensate inlet is formed in the top of the steam-water separation tank, the liquid level meter is arranged on the side wall of the steam-water separation tank, a condensate outlet is formed in the bottom of the steam-water separation tank, and the filter screen is arranged above the inside of the cylindrical structure;

the drain valve is of a pore plate type structure;

the condensate is connected with a condensate inlet at the top of the steam-water separation tank, a condensate outlet at the bottom of the steam-water separation tank is connected with the drain valve, and the drain valve is connected with the electromagnetic valve;

preferably: the drain valve adopts a single-stage or multi-stage throttling mode;

preferably: when the drain valve adopts a multi-stage orifice plate for throttling, the throttling hole is concentrically or eccentrically arranged.

The working method of the zero-steam-leakage multistage drainage system comprises the following steps:

steam-containing condensate water discharged by heating equipment enters a steam-water separation tank, rust and dirt in the condensate are removed through a filter screen, then the condensate enters a drain valve for throttling and reducing pressure to discharge pressure, a liquid level meter monitors the height of the liquid level in the steam-water separation tank, the electromagnetic valve is opened when the liquid level reaches the upper limit of the liquid level, the condensate is discharged from a system, and the electromagnetic valve is closed when the liquid level reaches the lower limit of the liquid level.

Compared with the prior art, the invention has the beneficial effects that:

the invention adopts the liquid seal in the steam-water separation tank and the two-stage drainage measure of the throttle orifice plate of the drain valve, ensures zero steam leakage of the system through the liquid seal of the steam-water separation tank, realizes high-low pressure throttling and pressure reduction through the passive throttling of the throttle orifice plate, has no mechanical moving part in the throttling and pressure reduction part of the system, ensures that the electromagnetic valve operates under the condition of no pressure difference, ensures the working stability of the electromagnetic valve, and simultaneously adopts the filter screen to remove various dirt in condensate, and ensures that the drain valve has no blocking risk. The multi-stage drainage system has the characteristics of reliable operation, convenient maintenance, long service life, zero steam leakage rate and the like.

Drawings

FIG. 1 is a schematic diagram of a zero-steam-leakage multi-stage drainage system according to the present invention;

FIG. 2 is a schematic view of a single stage throttling trap configuration;

FIG. 3 is a schematic view of a dual stage concentric throttling trap configuration;

FIG. 4 is a schematic diagram of a two-stage eccentric throttling trap configuration;

FIG. 5 is a schematic view of a three-stage concentric throttling trap configuration;

FIG. 6 is a schematic view of a three-stage eccentric throttle type steam trap.

In the figure, 1 is a steam-water separation tank, 2 is a filter screen, 3 is a liquid level meter, 4 is a drain valve, and 5 is an electromagnetic valve.

Detailed Description

The invention will be described in further detail with reference to the following figures and specific examples, which are given by way of illustration only and are not intended to limit the scope of the invention.

The first embodiment is as follows:

as shown in fig. 1, the zero-leakage multistage drainage system of the present embodiment is composed of a steam-water separation tank 1, a filter screen 2, a liquid level meter 3, a drainage valve 4, and an electromagnetic valve 5. The steam-water separation tank 1 is of a cylindrical structure, a condensate inlet is formed in the top of the steam-water separation tank, the filter screen 2 is arranged above the inside of the steam-water separation tank, the liquid level meter 3 is arranged on the side wall of the steam-water separation tank, and a condensate outlet is formed in the bottom of the steam-water separation tank; as shown in FIG. 2, the trap 4 is of a single-stage orifice plate type structure; setting the flow rate to be 1t/h, the temperature to be 160 ℃, and the steam-water mixture with the gauge pressure of 5bar to enter a steam-water separation tank, and removing impurities such as dirt, rust and the like in condensate through a filter screen; the condensate is throttled by an orifice plate of the drain valve, then is depressurized to normal pressure, and then is discharged out of the system through the electromagnetic valve 5. The drain valve pipe diameter adopts DN25, and valve body length is 100mm, and orifice plate thickness is 5mm, and the orifice aperture is 1.8mm, and the orifice sets up rather than the outer tube is concentric.

The embodiment realizes the zero steam leakage effect of the double-stage drainage guaranteeing system drainage operation through the liquid seal in the steam-water separation tank 1 and the throttle orifice plate of the drain valve 4, the system throttling and pressure reducing part has no mechanical moving part, the stability and reliability of the system operation are guaranteed, the electromagnetic valve is guaranteed to operate under the condition of no pressure difference, and the service life of the electromagnetic valve is prolonged. The multi-stage drainage system has the characteristics of reliable operation, convenience in maintenance, long service life and zero steam leakage rate.

Example two:

as shown in FIG. 3, the trap 4 of this embodiment employs two stages of orifice plates, with the orifices being concentric with the trap outer tube. The drain valve pipe diameter adopts DN25, and valve body length is 100mm, and orifice plate thickness is 5mm, and the throttle aperture is 2.5mm, and two orifice plate interval 30 mm.

The system composition, the working mode and the system process parameters of the present embodiment are the same as those of the first embodiment, and are not described herein again.

Example three:

as shown in FIG. 4, the trap 4 of this embodiment employs two stages of orifice plates, and the orifices are arranged eccentrically above and below the trap outer tube. The drain valve pipe diameter adopts DN25, and valve body length is 100mm, and orifice plate thickness is 5mm, and the orifice aperture is 2.5mm, and orifice and its outer tube eccentricity 6.5mm, two orifice plate intervals 30 mm.

The system composition, the working mode and the system process parameters of the present embodiment are the same as those of the first embodiment, and are not described herein again.

Example four:

as shown in FIG. 5, the trap 4 of this embodiment employs a three-stage orifice plate, and the orifice is concentrically arranged with the outer pipe of the trap. The drain valve pipe diameter adopts DN25, and valve body length is 100mm, and orifice plate thickness is 5mm, and the orifice aperture is 2.8mm, and orifice plate interval 20 mm.

The system composition, the working mode and the system process parameters of the present embodiment are the same as those of the first embodiment, and are not described herein again.

Example five:

as shown in FIG. 6, the trap 4 of this embodiment employs a three-stage orifice plate, and the orifice is concentrically arranged with the outer pipe of the trap. The drain valve pipe diameter adopts DN25, and valve body length is 100mm, and orifice plate thickness is 5mm, and the orifice aperture is 2.8mm, and orifice plate interval 20mm, the orifice of both ends orifice plate and its outer tube eccentricity 6.5mm, the orifice of middle orifice plate and outer tube set up with one heart.

The system composition, the working mode and the system process parameters of the present embodiment are the same as those of the first embodiment, and are not described herein again.

Although the present invention has been described in connection with the accompanying drawings, the present invention is not limited to the above-described embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit of the present invention, within the scope of the present invention.