CN219346436U

CN219346436U - Dewatering structure of desalination water heater

Info

Publication number: CN219346436U
Application number: CN202320400555.XU
Authority: CN
Inventors: 郝海斌
Original assignee: Hebei Changrun Environmental Protection Technology Co ltd
Current assignee: Hebei Changrun Environmental Protection Technology Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-07-14
Anticipated expiration: 2033-03-07

Abstract

The utility model discloses a dewatering structure of a desalination water heater, which is used for dewatering of a low-temperature heater and comprises a middle water tank and a dewatering pump, wherein a water inlet of the middle water tank is communicated to a dewatering pipe joint of the low-temperature heater through a dewatering pipe, a water outlet of the middle water tank is communicated with the dewatering pump, and an outlet pipeline of the dewatering pump is communicated to a water inlet pipe joint of a deaerator. The dewatering structure of the demineralized water heater adopts a mode of not directly dewatering to the deaerator, ensures smooth dewatering and improves the working efficiency of the demineralized water heater.

Description

Dewatering structure of desalination water heater

Technical Field

The utility model relates to the technical field of demineralized water heaters, in particular to a drainage structure of a demineralized water heater.

Background

The water quality in the power plant boiler has high requirements, impurities cannot be contained, the salt content is required to be low, otherwise, the boiler can scale on the water cooling wall of the boiler, and the efficiency of the boiler is reduced or even the tube is burst. Therefore, the water supplied to the boiler can be used only after the desalting treatment is carried out. The power plant is generally provided with a special chemical water treatment workshop for producing desalted water, and the desalted water is required to be heated and deoxidized before the boiler is supplied with water. The temperature of the desalted water needs to be increased by using a low-temperature heater, and the low-temperature heater is heated by low-temperature steam discharged by a steam turbine.

In the working process of the low-temperature heater, condensed water can be generated, and the condensed water needs to be discharged in time, otherwise, the normal working of the low-temperature heater is affected. As shown in fig. 1, the drain pipe 3 of the existing desalination water heater is directly connected between the drain pipe joint of the low-temperature heater 1 and the water inlet pipe joint of the deaerator 2, and the drain pipe is used for reutilizing water resources in a self-flowing mode. However, when the deaerator 2 adopts a large air pressure type mixed deaerator, the deaerator 2 actually works at a pressure slightly higher than the atmospheric pressure, and is generally 0.12MPa, so that the air pressure at the water draining end of the water draining pipe 3 is large, and the water draining of the water draining pipe 3 is not smooth, so that the low-temperature heater 1 cannot work normally, and the heating efficiency of desalted water is affected.

Therefore, there is a need to develop a desalination water heater drainage structure that addresses the above-described problems.

Disclosure of Invention

The utility model aims to provide a dewatering structure of a desalination water heater, which adopts a mode of not directly dewatering to a deaerator, ensures smooth dewatering and improves the working efficiency of the desalination water heater.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model discloses a dewatering structure of a desalination water heater, which is used for dewatering a low-temperature heater and comprises an intermediate water tank and a dewatering pump, wherein a water inlet of the intermediate water tank is communicated to a dewatering pipe joint of the low-temperature heater through a dewatering pipe, a water outlet of the intermediate water tank is communicated with the dewatering pump, and an outlet pipeline of the dewatering pump is communicated to a water inlet pipe joint of a deaerator.

Further, the top of the middle water tank is closed and is provided with a breather valve.

Further, a liquid level sensor is arranged on the middle water tank, the liquid level sensor transmits a liquid level signal to a controller, and the controller controls the drain pump to work.

Further, still include drain pipe and first automatically controlled valve, the drain pipe passes through tee bend pipe fitting intercommunication on the drain pipe, the drain pipe is hydrophobic to the drain box of whole factory, first automatically controlled valve sets up on the drain pipe.

Further, the water tank further comprises a second electric control valve, the second electric control valve is arranged on the water drain pipe and located between the three-way pipe fitting and the middle water tank, and the first electric control valve and the second electric control valve are electrically connected to the controller.

Compared with the prior art, the utility model has the beneficial technical effects that:

according to the dewatering structure of the desalination water heater, condensed water generated by the low-temperature heater can be temporarily stored and collected through the arrangement of the intermediate water tank, and the condensed water can be output to the deaerator after being pressurized through the arrangement of the dewatering pump, so that the dewatering structure is dewatering in a self-flowing mode relative to a pipeline in the prior art, has strong air resistance and improves the smoothness of dewatering.

In addition, by sealing the middle water tank, the condensate water temporarily stored in the middle water tank is prevented from being polluted by the external environment, and recycling is ensured; through the setting of breather valve, be convenient for freely advance water and go out water. Through the setting of the liquid level sensor, when reaching the set liquid level, the drainage pump is started to drain to the deaerator, and the drainage pump is in an intermittent working mode. The drain pipe and the first electric control valve are communicated between the drain pipe and the whole plant drain tank, so that when the middle water tank fails, the first electric control valve is opened, the drain pipe is smoothly drained to the whole plant drain tank, and the normal operation of the desalination water heater is ensured.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic diagram of the hydrophobic composition of a prior art demineralized water heater;

fig. 2 is a schematic diagram of the drainage structure of the demineralized water heater of the present utility model.

Reference numerals illustrate: 1. a low temperature heater; 2. a deaerator; 3. a water drain pipe; 4. a desalting water pipe; 5. a steam inlet pipe; 6. a steam outlet pipe; 7. a first electrically controlled valve; 8. an intermediate water tank; 801. a respiratory valve; 9. a drainage pump; 10. a second electrically controlled valve; 11. a drain pipe; 12. the whole plant is a drain box.

Detailed Description

The core of the utility model is to provide a dewatering structure of a desalination water heater, which adopts a mode of not directly dewatering to a deaerator, ensures smooth dewatering and improves the working efficiency of the desalination water heater.

The following description of the embodiments of the present utility model will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In a specific embodiment, as shown in fig. 2, low-temperature steam discharged from the steam turbine enters the coil of the low-temperature heater 1 from the steam inlet pipe 5, exchanges heat with desalted water, and is discharged from the steam outlet pipe 6, and the desalted water after being heated flows out from the desalted water pipe 4 to enter the next process for advanced treatment. The cold-receiving part of the low-temperature steam is condensed into condensed water in the heat dissipation process, and the condensed water is discharged through the drain pipe joint of the heat exchanger. The drainage structure of the desalination water heater comprises an intermediate water tank 8 and a drainage pump 9, wherein a water inlet of the intermediate water tank 8 is communicated with a drainage pipe joint of the low-temperature heater 1 through a drainage pipe 3, namely, the drainage pipe 3 drains condensed water to the intermediate water tank 8 in a self-flowing mode. The water outlet of the middle water tank 8 is communicated with a drain pump 9, and the outlet pipeline of the drain pump 9 is communicated with a water inlet pipe joint of the deaerator 2. The drain pump 9 can boost the condensed water in the intermediate water tank 8 and output the condensed water to the deaerator 2.

Through the setting of intermediate water tank 8, can carry out the collection of keeping in to the comdenstion water that low temperature heater 1 produced, can export deaerator 2 after the comdenstion water pressure boost through the setting of drain pump 9, it is hydrophobic to flow the mode of flowing automatically for prior art's pipeline, and anti air resistance is strong, has improved the drainage smoothness nature.

In one embodiment of the present utility model, as shown in fig. 2, the intermediate tank 8 is closed at the top and is fitted with a breather valve 801.

Specifically, as shown in fig. 2, a liquid level sensor is provided on the intermediate water tank 8, and the liquid level sensor transmits a liquid level signal to a controller, and the controller controls the operation of the drain pump 9. The controller may be a separately added on-site PLC controller or may be integrated into the control system of the overall desalinated water supply system.

By sealing the intermediate water tank 8, the condensate water temporarily stored in the intermediate water tank 8 is prevented from being polluted by the external environment, and recycling is ensured; through the setting of breather valve 801, be convenient for freely intaking and go out water. Through the setting of the liquid level sensor, when reaching the setting liquid level, start the drainage pump 9 and drain to the deaerator 2, drainage pump 9 is intermittent type mode of operation.

In one embodiment of the present utility model, as shown in fig. 2, the drainage structure of the desalination water heater of the present utility model further comprises a drainage pipe 11 and a first electrically controlled valve 7, wherein the drainage pipe 11 is communicated with the drainage pipe 3 through a three-way pipe fitting, the drainage pipe 11 drains to a whole plant drainage tank 12, and the first electrically controlled valve 7 is arranged on the drainage pipe 11.

Specifically, as shown in fig. 2, the dewatering structure of the demineralized water heater of the present utility model further includes a second electrically controlled valve 10, the second electrically controlled valve 10 is disposed on the dewatering pipe 3 and located between the three-way pipe fitting and the intermediate water tank 8, and both the first electrically controlled valve 7 and the second electrically controlled valve 10 are electrically connected to the controller.

The drain pipe 11 and the first electric control valve 7 are communicated between the drain pipe 3 and the whole-plant drain tank 12, the first electric control valve 7 can be opened when the middle water tank 8 fails, the drain pipe 11 smoothly drains to the whole-plant drain tank 12, and normal operation of the desalination water heater is guaranteed.

The working principle of the dewatering structure of the desalination water heater in the embodiment is as follows: condensed water generated by the steam coil of the low-temperature heater 1 is discharged through a drain valve and a drain pipe joint, flows into the intermediate water tank 8 at a low position through the drain pipe 3, and is temporarily collected and stored in the intermediate water tank 8. When the water level of the condensed water in the intermediate water tank 8 reaches the set range, the controller controls the drain pump 9 to work, and the condensed water in the intermediate water tank 8 is pressurized and then conveyed to the deaerator 2 for recycling. When the intermediate water tank 8 or the drain pump 9 fails, the second electric control valve 10 is closed, the first electric control valve 7 is opened, and condensed water is smoothly drained to the whole-plant drain tank 12 through the drain pipe 11.

According to the dewatering structure of the desalination water heater, condensed water generated by the low-temperature heater 1 can be temporarily stored and collected through the arrangement of the intermediate water tank 8, and the condensed water can be output to the deaerator 2 after being pressurized through the arrangement of the dewatering pump 9, so that the dewatering structure is dewatering in a self-flowing mode of a pipeline in the prior art, has strong air resistance and improves the smoothness of dewatering. In addition, by sealing the intermediate water tank 8, the condensate water temporarily stored in the intermediate water tank 8 is prevented from being polluted by the external environment, and recycling is ensured; through the setting of breather valve 801, be convenient for freely intaking and go out water. Through the setting of the liquid level sensor, when reaching the setting liquid level, start the drainage pump 9 and drain to the deaerator 2, drainage pump 9 is intermittent type mode of operation. The drain pipe 11 and the first electric control valve 7 are communicated between the drain pipe 3 and the whole-plant drain tank 12, the first electric control valve 7 can be opened when the middle water tank 8 fails, the drain pipe 11 smoothly drains to the whole-plant drain tank 12, and normal operation of the desalination water heater is guaranteed.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. The utility model provides a desalination water heater drainage structure for the drainage of low temperature heater (1), its characterized in that includes intermediate water tank (8) and drainage pump (9), the water inlet of intermediate water tank (8) is linked together through hydrophobic pipe (3) on the hydrophobic pipe joint of low temperature heater (1), intermediate water tank (8) delivery port intercommunication drainage pump (9), the inlet tube joint to deaerator (2) is linked together to drainage pump (9) outlet pipe.

2. The demineralized water heater drainage structure of claim 1, wherein: the top of the middle water tank (8) is closed and is provided with a breather valve (801).

3. The demineralized water heater drainage structure of claim 1, wherein: the intermediate water tank (8) is provided with a liquid level sensor, the liquid level sensor transmits a liquid level signal to a controller, and the controller controls the drainage pump (9) to work.

4. A desalination water heater hydrophobic structure as claimed in any one of claims 1 to 3 wherein: still include drain pipe (11) and first automatically controlled valve (7), drain pipe (11) are in through tee bend pipe fitting intercommunication on drain pipe (3), drain pipe (11) drain to whole factory drain box (12), first automatically controlled valve (7) set up on drain pipe (11).

5. The demineralized water heater drainage structure of claim 4, wherein: the water draining device further comprises a second electric control valve (10), wherein the second electric control valve (10) is arranged on the water draining pipe (3) and located between the three-way pipe fitting and the middle water tank (8), and the first electric control valve (7) and the second electric control valve (10) are electrically connected to the controller.