CN217977544U

CN217977544U - Automatic water replenishing device for deaerator water seal

Info

Publication number: CN217977544U
Application number: CN202220523345.5U
Authority: CN
Inventors: 陈佳楠; 郭增吉; 刘以平
Original assignee: Shanghai Huanqiu Engineering Co ltd
Current assignee: Shanghai Huanqiu Engineering Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-12-06
Anticipated expiration: 2032-03-11

Abstract

The utility model relates to an automatic moisturizing device of oxygen-eliminating device water seal, including U type water seal pipe, one side and the oxygen-eliminating device of U type water seal pipe are connected, overflow drain pipe is connected to the opposite side of U type water seal pipe, the mouth is arranged for the overflow to overflow drain pipe's end, the mouth is arranged to the overflow and temperature sensor is connected, automatic control moisturizing unit is connected to the opposite side upper end of U type water seal pipe, temperature sensor with automatic control moisturizing unit connects. Compared with the prior art, the utility model discloses improved the automatic control level under the prerequisite that does not influence safety, realized the moisturizing automation, the user can remote control water seal automatic water supply device moreover, does not need the staff to remove the site operation after being destroyed because of the water seal, has reduced the potential safety hazard.

Description

Automatic water replenishing device for deaerator water seal

Technical Field

The utility model relates to a deaerator water seal arrangement especially relates to a deaerator water seal automatic water supply device.

Background

In a deaerator system, an overflow liquid seal device is limited by the diameter of a deaerator cylinder, the liquid seal capacity is usually 2-3 m water column, the fluctuation range of steam which can be resisted is only 0.02-0.03 MPaG, and the low-pressure steam used for deaerating is common in pipeline fluctuation and often exceeds the working range of water seal. If the water seal break event has taken place for oxygen-eliminating device water seal device, staff's processing mode is for releasing oxygen-eliminating device operating pressure to the ordinary pressure earlier, then increaseing the oxygen-eliminating device and intaking and rising oxygen-eliminating device liquid level to water seal overflow mouth, wait to carry out the oxygen-eliminating water again after overflow water is full of water seal section of thick bamboo and heat up and step up and resume the oxygen-eliminating device and normally throw the fortune, can lead to the oxygen-eliminating device operating temperature behind the pressure release to descend like this, the oxygen content of supplying water rises, the quality of supplying water is unqualified, influences the safe and stable operation of boiler. Meanwhile, a large amount of steam leaks from the water seal into the plant during water replenishing, and the steam leaks to cause short circuit of electrical equipment and corrosion of mechanical equipment; after water is supplemented to the water sealing cylinder, the temperature rise of the deoxygenated water and the pressure rise of the deoxygenator are needed, and the vibration of equipment is large during the temperature rise of the deoxygenated water, so that the detection instrument is easy to damage; the time for recovering the normal operation of the deaerator is long, and 3 hours are needed from the temperature reduction and pressure reduction of the deaerator to the recovery of the normal operation of the deaerator.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic water replenishing device for a deaerator water seal in order to overcome the defects existing in the prior art, which can realize automatic water replenishing seal.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides an automatic water replenishing device of oxygen-eliminating device water seal, includes U type water seal pipe, one side and the oxygen-eliminating device of U type water seal pipe are connected, overflow drain pipe is connected to the opposite side of U type water seal pipe, the mouth is arranged for the overflow to overflow drain pipe's end, the mouth is arranged to the overflow and is connected temperature sensor, automatic control moisturizing unit is connected to the opposite side upper end of U type water seal pipe, temperature sensor with automatic control moisturizing unit connects.

When the automatic water replenishing device works, the temperature sensor is used for detecting the temperature of the overflow drain outlet at the tail end of the overflow drain pipe, the working condition of liquid in the U-shaped water sealing pipe is judged according to the temperature, if the temperature sensor detects that the temperature in the pipe is overhigh (higher than 70 ℃), the liquid in the U-shaped water sealing pipe overflows and needs to be replenished in time, at the moment, the temperature sensor (5) transmits a temperature signal to the automatic water replenishing unit, and the automatic water replenishing unit starts replenishing water to the U-shaped water sealing pipe; when the temperature sensor detects that the temperature in the pipe is recovered to a normal state (such as lower than 50 ℃), the liquid in the U-shaped water sealing pipe is appropriate, the liquid is not supplemented any more, and the water supplementing unit is automatically controlled to stop working.

Further, the automatic control water replenishing unit comprises a water replenishing valve assembly and a water replenishing pipe, and the water replenishing pipe is communicated with the upper end of the U-shaped water sealing pipe.

Furthermore, the water replenishing valve assembly consists of a plurality of water replenishing valves, and the water replenishing valves are pneumatic switch valves or electric switch valves.

Furthermore, demineralized water is introduced into the water replenishing pipe.

Furthermore, the U-shaped water seal pipe is connected with an overflow port of the deaerator through an overflow pipe.

Furthermore, the position of the overflow drain pipe connected with the U-shaped water seal pipe and the connecting position of the U-shaped water seal pipe and the overflow port of the deaerator are at the same height.

Further, the position of the overflow discharge port is lower than the bottommost end of the U-shaped water seal pipe.

Further, the automatic control water replenishing unit comprises a control device, and the water replenishing valve assembly and the temperature sensor are connected with the control device.

When the temperature sensor detects that the temperature in the pipe is higher than a starting set value, the water replenishing valve is opened to replenish water, and when the water replenishing time reaches a set time and the temperature detected by the temperature sensor is lower than a closing set value, the water replenishing valve is closed.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a connect overflow drain pipe in one side of U type water seal pipe, through the temperature that detects the terminal overflow row mouth of overflow drain pipe, judge whether need supply liquid, temperature sensor and the linkage of automatic control moisturizing unit can realize the moisturizing automatically, avoid appearing leaking the easy electrical equipment short circuit that takes place because of the steam that the shut down brought, mechanical equipment corrodes, easily causes the detecting instrument to damage, causes the loss scheduling problem because of shutting down. The utility model discloses not only have the simple characteristics of system, carry out automated processing to the moisturizing moreover, satisfy the user's requirement, reduce and patrol and examine maintenance work. The utility model discloses improve the automatic control level under the prerequisite that does not influence safety, realized the moisturizing automation, the user can remote control water seal automatic water supply device moreover, does not need the staff to go the site operation because of the water seal is destroyed after, has reduced the potential safety hazard.

Drawings

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

in the figure, 1-an overflow port of a deaerator; 2-water sealing the pipe; 3-a water replenishing valve; 4-water supply pipe; 5-a temperature sensor; 6-overflow drain pipe; 7-overflow drain.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. All of which belong to the protection scope of the present invention.

As shown in figure 1, the automatic water replenishing device for the water seal of the deaerator comprises a U-shaped water seal pipe 2, wherein one side of the U-shaped water seal pipe 2 is connected with the deaerator, and the automatic water replenishing device is characterized in that the other side of the U-shaped water seal pipe 2 is connected with an overflow drain pipe 6, the tail end of the overflow drain pipe 6 is provided with an overflow discharge port 7, the overflow discharge port 7 is connected with a temperature sensor 5, the upper end of the other side of the U-shaped water seal pipe 2 is connected with an automatic water replenishing unit, and the temperature sensor 5 is connected with the automatic water replenishing unit.

When the automatic water replenishing device works, the temperature sensor 5 is used for detecting the temperature of the overflow discharge port 7 at the tail end of the overflow drain pipe 6, the working condition of liquid in the U-shaped water seal pipe is judged according to the temperature, if the temperature sensor detects that the temperature in the pipe is overhigh, the liquid in the U-shaped water seal pipe overflows and needs to be replenished in time, at the moment, the temperature sensor 5 transmits a temperature signal to the automatic water replenishing unit, and the automatic water replenishing unit starts to replenish water for the U-shaped water seal pipe; when the temperature sensor detects that the temperature in the pipe is recovered to a normal state, the liquid in the U-shaped water seal pipe is indicated to be appropriate, the liquid is not supplemented any more, and the water supplementing unit is automatically controlled to stop working.

Specifically, the automatic control water replenishing unit comprises a water replenishing valve assembly and a water replenishing pipe 4, and the water replenishing pipe 4 is communicated with the upper end of the U-shaped water sealing pipe 2. The water replenishing valve component is composed of a plurality of water replenishing valves 3, each water replenishing valve 3 is a pneumatic switch valve or an electric switch valve, demineralized water is introduced into a water replenishing pipe 4, a U-shaped water sealing pipe 2 is connected with an overflow port 1 of a deaerator through an overflow pipe, the position where an overflow drain pipe 6 is connected with the U-shaped water sealing pipe 2 and the connecting position of the U-shaped water sealing pipe 2 and the overflow port 1 of the deaerator are at the same height, the position of an overflow drain port 7 is lower than the bottommost end of the U-shaped water sealing pipe 2, the automatic control water replenishing unit comprises a control device, the water replenishing valve component and the temperature sensor 5 are both connected with the control device (such as a conventional controller in the field), when the temperature sensor 5 detects that the temperature in the pipe is higher than a starting set value, the water replenishing valve 3 is opened for replenishing water, and when the water replenishing time reaches the set time and the temperature detected by the temperature sensor 5 is lower than the closing set value, the water replenishing valve 3 is closed.

For example, the used water replenishing valve 3 is a switch valve and is linked with the temperature sensor 5 arranged at the overflow discharge port 7, when the temperature sensor 5 detects that the temperature in the pipe is higher than 70 ℃, the water replenishing valve 3 is opened in a linkage manner, and the water replenishing valve 3 can be an electric valve or a pneumatic valve and can be selected for use according to actual requirements. When the opening time of the water replenishing valve 3 reaches 5 seconds, if the temperature sensor 5 detects that the temperature in the pipe is lower than 50 ℃, the water replenishing valve 3 is closed, and if the temperature sensor 5 detects that the temperature in the pipe is higher than 50 ℃, the water replenishing valve 3 is opened until the temperature sensor 5 detects that the temperature in the pipe is lower than 50 ℃. The automatic control level of the water replenishing device is improved on the premise of not influencing safety, water replenishing automation is realized, a user can remotely control the water seal automatic water replenishing device, a worker does not need to go to field operation after a water seal is damaged, and potential safety hazards are reduced.

Claims

1. The utility model provides an automatic moisturizing device of oxygen-eliminating device water seal, includes U type water seal pipe (2), one side and the oxygen-eliminating device of U type water seal pipe (2) are connected, its characterized in that, overflow drain pipe (6) are connected to the opposite side of U type water seal pipe (2), mouth (7) are arranged for the overflow to the end of overflow drain pipe (6), mouth (7) connection temperature sensor (5) are arranged in the overflow, automatic control moisturizing unit is connected to the opposite side upper end of U type water seal pipe (2), temperature sensor (5) with automatic control moisturizing unit connects.

2. The automatic water replenishing device for the deaerator water seal is characterized in that the automatic control water replenishing unit comprises a water replenishing valve assembly and a water replenishing pipe, and the water replenishing pipe is communicated with the upper end of the U-shaped water seal pipe (2).

3. The automatic water replenishing device for the water seal of the deaerator according to claim 2, wherein the water replenishing valve assembly is composed of a plurality of water replenishing valves (3), and each water replenishing valve (3) is a pneumatic switch valve or an electric switch valve.

4. The automatic water replenishing device for the water seal of the deaerator as claimed in claim 2, wherein demineralized water is introduced into the water replenishing pipe.

5. The automatic water replenishing device for the water seal of the deaerator as claimed in claim 1, wherein the U-shaped water seal pipe (2) is connected with an overflow port of the deaerator through an overflow pipe.

6. The automatic water replenishing device for the water seal of the deaerator as claimed in claim 5, wherein the position where the overflow drain pipe (6) is connected with the U-shaped water seal pipe (2) is at the same height as the position where the U-shaped water seal pipe (2) is connected with the overflow port of the deaerator.

7. The automatic water replenishing device for the water seal of the deaerator is characterized in that the position of the overflow discharge opening (7) is lower than the bottommost end of the U-shaped water seal pipe (2).

8. The automatic water replenishing device for the water seal of the deaerator as claimed in claim 2, wherein the automatic control water replenishing unit comprises a control device, and the water replenishing valve assembly and the temperature sensor (5) are connected with the control device.