Water level detection device for deaerator

Abstract

Relates to the field of deaerators, and discloses a water level detection device for a deaerator, which comprises a deaerator body, a water inlet arranged at the upper end of the deaerator body and a water outlet arranged at the lower end of the deaerator body, and further comprises a water level detection unit, the water level detection unit comprises a high water level prompting device which is arranged on the upper portion of the inner side of the water level detection unit and electrically connected with the second water pump through a plc control system. The low water level prompting device is arranged on the lower portion of the inner side of the water level detecting unit and electrically connected with the first water pump through a plc control system. The water level in the deaerator body can be flexibly adjusted, so that the water level in the deaerator body tends to be a normal value, and the water level in the deaerator body can be conveniently adjusted. The adverse effect on operation of the deaerator body caused by too high or too low water level is avoided, and the operation efficiency and safety of the deaerator body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of deaerators, in particular to a water level detection device for a deaerator. Background Technique

[0002] The working principle of the deaerator is that the make-up water is sprayed out in a spiral shape through the film-forming pipe at a certain angle to exchange heat with the heating steam for deaeration. The feed water is heated to the saturation temperature corresponding to the working pressure of the deaerator to remove the oxygen and other gases dissolved in the feed water, preventing and reducing the corrosion of the boiler feed water pipe, economizer and other auxiliary equipment.

[0003] The existing equipment has the following disadvantages: the water level in the inner cavity of the deaerator has a significant impact on the deaeration effect. If the water level is too low, the deaeration efficiency will be affected, and if the water level is too high, it is easy to cause water to flow out through the overflow port.

[0004] Therefore, the present application now proposes a water level detection device for a deaerator to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a water level detection device for a deaerator to solve the problems that too low water level affects the deaeration efficiency and too high water level easily causes water to flow out through the overflow port.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A water level detection device for a deaerator, including a deaerator body, a water inlet arranged at the upper end of the deaerator body, and a water outlet arranged at the lower end of the deaerator body, further including:

[0007] A water level detection unit, arranged on one side of the deaerator body, for detecting the water level inside the deaerator body;

[0008] A first water pump, arranged on one side of the deaerator body and connected to the water inlet, for supplying water to the inside of the deaerator body;

[0009] A second water pump, arranged on one side of the deaerator body and connected to the water outlet, for discharging the excess water inside the deaerator body;

[0010] The water level detection unit includes:

[0011] A high water level prompting device, arranged at the upper part inside the water level detection unit and electrically connected to the second water pump through a PLC control system;

[0012] A low water level prompting device, arranged at the lower part inside the water level detection unit and electrically connected to the first water pump through a PLC control system.

[0013] Among them, the water level detection unit further includes a detection tube and a floating ball disposed inside the detection tube. The detection tube is communicated with the deaerator body through a connecting pipeline. A side terminal is disposed in the middle of the detection tube, and the floating ball is connected to the side terminal through a connecting wire.

[0014] Among them, the high water level prompting device includes a top cover fixed to the upper end of the detection tube, an upper terminal fixed to the upper end of the top cover, and a first elastic member fixed to the lower end of the top cover and located inside the detection tube. The upper terminal is electrically connected to the second water pump through a wire, and the upper terminal is communicated with the first elastic member.

[0015] Among them, the low water level prompting device includes a bottom cover fixed to the lower end of the detection tube, a lower terminal fixed to the lower end of the bottom cover, and a second elastic member fixed to the upper end of the bottom cover and located inside the detection tube. The second elastic member is connected to the lower terminal.

[0016] Among them, the connecting pipeline includes an upper pipe fixed to the upper part of one side of the deaerator body and communicated with the detection tube, and a lower pipe fixed to the lower part of one side of the deaerator body and communicated with the detection tube. The upper pipe is connected to one side of the detection tube close to the first elastic member, and the lower pipe is connected to one side of the detection tube close to the second elastic member.

[0017] Among them, a limiting frame for restricting the position of the floating ball is disposed inside the detection tube. A limiting block slidably disposed inside the limiting frame is disposed on one side of the floating ball close to the limiting frame, and a through hole for the limiting block to penetrate is formed in the upper part of the limiting frame.

[0018] Among them, an alarm is disposed on the upper end of the top cover, and the alarm is electrically connected to the upper terminal and the lower terminal.

[0019] Among them, an observation window is formed on one side of the detection tube, and a scale line is disposed on one side of the detection tube where the observation window is located.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] The water level detection unit of the present utility model is connected to the deaerator body. The water level inside the deaerator body can be detected by observing the water level inside the water level detection unit. When the water level inside the deaerator body is too high, the high water level warning device is opened. Then, through the PLC control system, the second water pump is turned on, and the water source inside the deaerator body is discharged through the drain pipe to reduce the water level inside the deaerator body. When the water level is at the normal value, the high water level warning device is closed, and the PLC control system turns off the second water pump. When the water level inside the deaerator body is too low, the low water level warning device is opened. Then, through the PLC control system, the first water pump is turned on, and water is added to the deaerator body through the water supply pipe to increase the water level inside the deaerator body. When the water level is at the normal value, the low water level warning device is closed, and the PLC control system turns off the first water pump. It can flexibly adjust the water level inside the deaerator body, making the water level inside the deaerator body tend to the normal value, avoiding adverse effects on the operation of the deaerator body caused by too high or too low water levels, improving the operation efficiency and safety of the deaerator body, and being convenient for observation and maintenance at the same time, having strong practicability and popularization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure in an embodiment of the present utility model;

[0023] Figure 2 It is a schematic diagram of the rear view structure in an embodiment of the present utility model;

[0024] Figure 3 It is a schematic diagram of the sectional view structure in an embodiment of the present utility model;

[0025] Figure 4 It is a schematic diagram of the internal structure of the detection tube in an embodiment of the present utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the floating ball connected to the limit frame in an embodiment of the present utility model;

[0027] Figure 6 It is a schematic diagram of the structure of the perforation position in an embodiment of the present utility model;

[0028] Figure 7 It is a schematic diagram of the structure of the water level monitoring unit in an embodiment of the present utility model.

[0029] In the figure: 1. Deaerator body; 11. Water inlet; 111. Water inlet pipe; 112. Water distribution pipe; 113. Fixed bracket; 114. First water pump; 115. Water supply pipe; 12. Water outlet; 121. Second water pump; 122. Drain pipe; 2. Water level detection unit; 21. Detection pipe; 22. Top cover; 221. Upper terminal; 23. Bottom cover; 231. Lower terminal; 24. First elastic member; 25. Second elastic member; 26. Floating ball; 261. Connecting wire; 262. Limit block; 27. Side terminal; 28. Alarm; 29. Scale line; 210. Limit frame; 2101. Perforation; 3. Connecting pipeline; 31. Upper pipe; 32. Lower pipe. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1-7 , the present invention provides a technical solution: a deaerator water level detection device, including a deaerator body 1, a water inlet 11 provided at the upper end of the deaerator body 1, and a water outlet 12 provided at the lower end of the deaerator body 1, further including:

[0032] A water level detection unit 2, provided on one side of the deaerator body 1, for detecting the water level inside the deaerator body 1;

[0033] A first water pump 114, provided on one side of the deaerator body 1 and connected to the water inlet 11, for supplying water to the inside of the deaerator body 1;

[0034] A second water pump 121, provided on one side of the deaerator body 1 and connected to the water outlet 12, for discharging the excess water inside the deaerator body 1;

[0035] The water level detection unit 2 includes:

[0036] A high water level prompting device, provided at the upper inner side of the water level detection unit 2 and electrically connected to the second water pump 121 through a plc control system;

[0037] A low water level prompting device, provided at the lower inner side of the water level detection unit 2 and electrically connected to the first water pump 114 through a plc control system.

[0038] In a specific embodiment, the first water pump 114 is connected to the water inlet 11 through a water supply pipe 115. At the position where the inside of the deaerator body 1 is connected to the water inlet 11, a water inlet pipe 111 is provided. A water distribution pipe 112 is fixed at the lower end of the water inlet pipe 111, and water outlet holes are formed in the water distribution pipe 112. The water distribution pipe 112 is fixedly connected to the inner wall of the deaerator body 1 through a fixing bracket 113. The second water pump 121 is connected to the water outlet 12 through a drain pipe 122.

[0039] It should be noted that during operation, the water level detection unit 2 is communicated with the deaerator body 1. The water level inside the deaerator body 1 can be detected by observing the water level inside the water level detection unit 2. When the water level inside the deaerator body 1 is too high, the high water level warning device is turned on. Then, through the PLC control system, the second water pump 121 is turned on, and then the water source inside the deaerator body 1 is discharged through the drain pipe 122 to reduce the water level inside the deaerator body 1. When the water level is at the normal value, the high water level warning device is turned off, and the PLC control system turns off the second water pump 121. When the water level inside the deaerator body 1 is too low, the low water level warning device is turned on. Then, through the PLC control system, the first water pump 114 is turned on, and then water is added to the inside of the deaerator body 1 through the water supply pipe 115 to increase the water level inside the deaerator body 1. When the water level is at the normal value, the low water level warning device is turned off, and the PLC control system turns off the first water pump 114. The water level inside the deaerator body 1 can be adjusted flexibly, so that the water level inside the deaerator body 1 tends to the normal value, avoiding the adverse effects caused by too high or too low water level on the operation of the deaerator body 1, improving the operation efficiency and safety of the deaerator body 1, and being convenient for observation and maintenance at the same time, having strong practicability and popularization value.

[0040] In an embodiment, the water level detection unit 2 further includes a detection pipe 21 and a floating ball 26 arranged inside the detection pipe 21. The detection pipe 21 is communicated with the deaerator body 1 through a connecting pipeline 3. A side terminal 27 is arranged in the middle of the detection pipe 21, and the floating ball 26 is connected to the side terminal 27 through a connecting wire 261.

[0041] With such a design, the detection pipe 21 is communicated with the deaerator body 1 through the connecting pipeline 3, so that the water level inside the detection pipe 21 is parallel to the water level inside the deaerator body 1. The water level inside the deaerator body 1 can be known by observing the water level inside the detection pipe 21, which is convenient for observation. The floating ball 26 floats inside the detection pipe 21, and the floating ball 26 is connected to the side terminal 27 through a connecting rope 261.

[0042] In one embodiment, the high water level prompting device includes a top cover 22 fixed to the upper end of the detection tube 21, an upper terminal 221 fixed to the upper end of the top cover 22, and a first elastic member 24 fixed to the lower end of the top cover 22 and located inside the detection tube 21. The upper terminal 221 is electrically connected to the second water pump 121 through a wire, and the upper terminal 221 communicates with the first elastic member 24.

[0043] With this design, when a fault occurs in the unit and the water level inside the deaerator body 1 rises, the floating ball 26 continuously moves upward under the action of the water level, then contacts the first elastic member 24, and then the PLC control system detects that the water level inside the deaerator body 1 is too high, and then controls the second water pump 121 to open to drain the water source inside the deaerator body 1.

[0044] In one embodiment, the low water level prompting device includes a bottom cover 23 fixed to the lower end of the detection tube 21, a lower terminal 231 fixed to the lower end of the bottom cover 23, and a second elastic member 25 fixed to the upper end of the bottom cover 23 and located inside the detection tube 21. The second elastic member 25 is connected to the lower terminal 231.

[0045] With this design, when the water level inside the deaerator body 1 drops, the floating ball 26 continuously moves downward under the action of the water level, then contacts the second elastic member 25, and then the PLC control system detects that the water level inside the deaerator body 1 is too low, and then controls the first water pump 114 to open to supplement the water source inside the deaerator body 1.

[0046] In one embodiment, the connecting pipeline 3 includes an upper pipe 31 fixed to the upper part of one side of the deaerator body 1 and communicating with the detection tube 21, and a lower pipe 32 fixed to the lower part of one side of the deaerator body 1 and communicating with the detection tube 21. The upper pipe 31 is connected to one side of the detection tube 21 close to the first elastic member 24, and the lower pipe 32 is connected to one side of the detection tube 21 close to the second elastic member 25.

[0047] With this design, the deaerator body 1 is communicated with the detection tube 21 through the upper pipe 31 and the lower pipe 32, and the water level condition inside the deaerator body 1 can be monitored in real time to ensure that the water level is maintained within an appropriate range.

[0048] In one embodiment, a limit frame 210 for restricting the position of the floating ball 26 is arranged inside the detection tube 21. A limit block 262 slidably arranged inside the limit frame 210 is arranged on one side of the floating ball 26 close to the limit frame 210, and a through hole 2101 for the limit block 262 to penetrate is opened in the upper part of the limit frame 210.

[0049] With this design, the limiting block 262 on the floating ball 26 is inserted into the inside of the limiting frame 210 through the perforation 2101, and the limiting block 262 is restricted inside the limiting frame 210, so that the moving position of the floating ball 26 can be restricted, enabling the floating ball 26 to move up and down horizontally inside the detection tube 21, thereby improving the smoothness of the movement of the floating ball 26 and making the water level detection more sensitive and accurate.

[0050] In one embodiment, an alarm 28 is provided at the upper end of the top cover 22, and the alarm 28 is electrically connected to the upper terminal 221 and the lower terminal 231.

[0051] With this design, when the floating ball 26 contacts the first elastic member 24 or the second elastic member 25, the circuit on the alarm 28 is connected, and then the alarm 28 will be turned on to remind the staff that the water level inside the deaerator body 1 is abnormal.

[0052] In one embodiment, an observation window is provided on one side of the detection tube 21, and a scale line 29 is provided on one side of the detection tube 21 where the observation window is located.

[0053] With this design, the observation window and the scale line provided on the detection tube 21 enable the operator to directly observe the change of the water level, which is convenient for daily monitoring and recording.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiment, such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance to the specification or the number of the indicated technical features implicitly. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature.

Claims

1. A deaerator water level detection device, comprising a deaerator body (1), a water inlet (11) arranged at the upper end of the deaerator body (1), and a water outlet (12) arranged at the lower end of the deaerator body (1), characterized in that: Also includes: A water level detection unit (2) is arranged on one side of the deaerator body (1) and is used to detect the water level inside the deaerator body (1); a first water pump (114), arranged at one side of the deaerator body (1) and connected to the water inlet (11), and used for supplying water to the interior of the deaerator body (1); a second water pump (121), arranged at one side of the deaerator body (1) and connected to the water outlet (12), and used for discharging excess water inside the deaerator body (1); The water level detection unit (2) comprises: A high water level prompting device, which is arranged on the inner upper part of the water level detection unit (2) and is electrically connected to the second water pump (121) via a PLC control system; A low water level prompting device is arranged at the lower inner part of the water level detection unit (2) and is electrically connected to the first water pump (114) via a PLC control system.

2. A deaerator water level detection device according to claim 1, characterized in that: The water level detection unit (2) further comprises a detection tube (21) and a float (26) arranged inside the detection tube (21); the detection tube (21) is connected to the deaerator body (1) via a connecting pipe (3); a side terminal (27) is arranged in the middle of the detection tube (21); and the float (26) is connected to the side terminal (27) via a connecting line (261).

3. A deaerator water level detection device according to claim 2, characterized in that: The high water level prompting device comprises a top cover (22) fixed to the upper end of the detection tube (21), an upper connecting post (221) fixed to the upper end of the top cover (22), and a first elastic member (24) fixed to the lower end of the top cover (22) and located inside the detection tube (21); the upper connecting post (221) is electrically connected to the second water pump (121) via a wire, and the upper connecting post (221) is in communication with the first elastic member (24).

4. A deaerator water level detection device according to claim 3, characterized in that: The low water level indicating device comprises a bottom cover (23) fixed to the lower end of the detection tube (21), a lower connecting post (231) fixed to the lower end of the bottom cover (23), and a second elastic member (25) fixed to the upper end of the bottom cover (23) and located inside the detection tube (21), wherein the second elastic member (25) is connected to the lower connecting post (231).

5. A deaerator water level detection device according to claim 4, characterized in that: The connecting pipeline (3) comprises an upper tube (31) fixed to an upper portion of one side of the deaerator body (1) and connected to the detection tube (21), and a lower tube (32) fixed to a lower portion of one side of the deaerator body (1) and connected to the detection tube (21), wherein the upper tube (31) is connected to a side of the detection tube (21) close to the first elastic member (24), and the lower tube (32) is connected to a side of the detection tube (21) close to the second elastic member (25).

6. A deaerator water level detection device according to claim 4, characterized in that: A limit frame (210) for limiting the position of the float (26) is arranged inside the detection tube (21), and a limit block (262) slidably arranged inside the limit frame (210) is arranged on the side of the float (26) close to the limit frame (210), and a through hole (2101) for the limit block (262) to penetrate is opened on the upper part of the limit frame (210).

7. A deaerator water level detection device according to claim 4, characterized in that: An alarm (28) is provided at the upper end of the top cover (22), and the alarm (28) is electrically connected to the upper connecting post (221) and the lower connecting post (231).

8. A deaerator water level detection device according to claim 2, characterized in that: An observation window is provided on one side of the detection tube (21), and a scale mark (29) is provided on one side of the detection tube (21) located at the observation window.

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