阅读说明：本技术 一种发电机定冷水系统 (Generator is decided cooling water system ) 是由 卫翔 任全在 牛云刚 白惠芬 卫喆 杨兴宇 陈小凤 卫军涛 于 2021-07-15 设计创作，主要内容包括：本发明公开了一种发电机定冷水系统,包括第一供液装置、第二供液装置、混合器、定冷水箱和控制装置；第一供液装置通过第一管路与混合器连接,第二供液装置通过第二管路与混合器连接,混合器通过第三管路与定冷水箱连接,第三管路上设置有能够打开和关闭的调控阀；控制装置包括用于检测液体性质的检测器和能够控制调控阀开闭的控制器,检测器与控制器通信连接；混合器和定冷水箱分别与检测器连接；控制器与调控阀通信连接。该发电机定冷水系统方便工作人员操作减轻了工作疲劳,其通过控制装置控制调控阀开闭,使混合器自动为定冷水箱提供符合标准的液体,提高了自动化程度。(The invention discloses a generator constant cooling water system, which comprises a first liquid supply device, a second liquid supply device, a mixer, a constant cooling water tank and a control device, wherein the first liquid supply device is connected with the first liquid supply device; the first liquid supply device is connected with the mixer through a first pipeline, the second liquid supply device is connected with the mixer through a second pipeline, the mixer is connected with the fixed cold water tank through a third pipeline, and a regulating valve capable of being opened and closed is arranged on the third pipeline; the control device comprises a detector for detecting the property of the liquid and a controller capable of controlling the opening and closing of the regulating valve, and the detector is in communication connection with the controller; the mixer and the fixed cold water tank are respectively connected with the detector; the controller is connected with the regulating valve in a communication mode. The generator water cooling system is convenient for workers to operate, working fatigue is reduced, the control device controls the regulating valve to be opened and closed, the mixer automatically provides liquid meeting the standard for the water cooling tank, and the automation degree is improved.)

1. A generator constant cooling water system (10) is characterized by comprising a first liquid supply device (1), a second liquid supply device (2), a mixer (3), a constant cooling water tank (4) and a control device (5);

the first liquid supply device (1) is connected with the mixer (3) through a first pipeline (11), the second liquid supply device (2) is connected with the mixer (3) through a second pipeline (21), the mixer (3) is connected with the fixed cooling water tank (4) through a third pipeline (31), and a regulating valve (311) capable of being opened and closed is arranged on the third pipeline (31);

the control device (5) comprises a detector (51) for detecting the property of the liquid and a controller (52) capable of controlling the regulation valve (311) to open and close, and the detector (51) is in communication connection with the controller (52);

the mixer (3) and the fixed cooling water tank (4) are respectively connected with the detector (51);

the controller (52) is in communication with the regulating valve (311).

2. The generator chilled water system (10) according to claim 1, wherein the first pipeline (11) is provided with a first regulating valve (111) capable of opening and closing, and the second pipeline (21) is provided with a second regulating valve (211) capable of opening and closing;

the first regulating valve (111) and the second regulating valve (211) are respectively in communication connection with the controller (52), and the controller (52) can control the first regulating valve (111) and the second regulating valve (211) to open and close.

3. Generator chilled water system (10) according to claim 1, characterized in that the detector (51) is connected to the chilled water tank (4) by a first sampling mechanism (6), the detector (51) being connected to the mixer (3) by a second sampling mechanism (7);

the first sampling mechanism (6) comprises a first connecting pipe (61) and a first sampler (62) connected to the first connecting pipe (61), the first connecting pipe (61) is connected between the control device (5) and the fixed cold water tank (4), and the detector (51) is connected with the first sampler (62);

the second sampling mechanism (7) comprises a second connecting pipe (71) and a second sampler (72) connected to the second connecting pipe (71), the second connecting pipe (71) is connected between the control device (5) and the mixer (3), and the detector (51) is connected to the second sampler (72).

4. Generator chilled water system (10) according to claim 1, characterized in that an ion exchanger (312) is arranged on the third line (31), said ion exchanger (312) being located between the regulating valve (311) and the chilled water tank (4).

5. Generator chilled water system (10) according to claim 4, characterized in that a flow meter (313) is provided on the third pipe (31), said flow meter (313) being located between the regulating valve (311) and the ion exchanger (312).

6. Generator chilled water system (10) according to claim 4, characterized in that a filter screen (314) is arranged on the third pipe (31), said filter screen (314) being located between the ion exchanger (312) and the chilled water tank (4).

7. The generator chilled water system (10) according to claim 6, wherein two connection valves (315) are provided at intervals on the third pipeline (31), and the filter screen (314) is located between the two connection valves (315).

8. The generator chilled water system (10) according to claim 1, further comprising a drain tank (8), wherein the chilled water tank (4) is communicated with the drain tank (8) through a fourth pipeline (41), and a drain valve (411) is disposed on the fourth pipeline (41).

9. Generator chilled water system (10) according to claim 8, characterized in that the fourth line (41) comprises a connection pipe (412) connected to the chilled water tank (4) and a U-shaped pipe (413) connected to the drainage tank (8), the drainage valve (411) being connected to the connection pipe (412);

the opening of the U-shaped pipe (413) faces downwards, the upper end of the U-shaped pipe (413) is connected with a communicating pipe (414) communicated with the U-shaped pipe (413), and the communicating pipe (414) is communicated with the outside of the U-shaped pipe (413);

a first connecting part (4131) is arranged between the U-shaped pipe (413) and the communicating pipe (414), a second connecting part (4121) is arranged between the connecting pipe (412) and the fixed cold water tank (4), and the first connecting part (4131) is positioned above the second connecting part (4121).

10. Generator chilled water system (10) according to claim 8, characterized in that a float valve (81) is provided inside the drainage tank (8).

Technical Field

The invention relates to power generation equipment, in particular to a generator fixed cooling water system.

Background

For the generator with stator windings adopting an 'internal water cooling' cooling mode, the stator cooling water is required to be clean and pure, so that the corrosion of a winding copper wire rod is reduced, and the corrosion deposition is avoided.

At present, a series of ways are adopted to adjust the quality of the generator cooling water, including: a copper corrosion inhibitor adding method, an alkalizer adding method, a small mixed bed treatment method, a frequent water changing method and the like. However, the modes can not automatically replenish water and control water quality, have low automation degree and inconvenient operation, and increase the workload of workers.

Based on the above technical problems, improvements thereof are required.

Disclosure of Invention

The technical scheme of the invention aims to provide the generator water cooling system which is convenient to operate and improves the automation degree.

The technical scheme of the invention provides a generator constant cooling water system, which comprises a first liquid supply device, a second liquid supply device, a mixer, a constant cooling water tank and a control device, wherein the first liquid supply device is connected with the second liquid supply device; the first liquid supply device is connected with the mixer through a first pipeline, the second liquid supply device is connected with the mixer through a second pipeline, the mixer is connected with the fixed cold water tank through a third pipeline, and a regulating valve capable of being opened and closed is arranged on the third pipeline; the control device comprises a detector for detecting the property of the liquid and a controller capable of controlling the regulation valve to open and close, and the detector is in communication connection with the controller; the mixer and the fixed cold water tank are respectively connected with the detector; the controller is in communication connection with the regulating valve.

Furthermore, a first regulating valve capable of being opened and closed is arranged on the first pipeline, and a second regulating valve capable of being opened and closed is arranged on the second pipeline; the first regulating valve and the second regulating valve are respectively in communication connection with the controller, and the controller can control the opening and closing of the first regulating valve and the second regulating valve.

Further, the detector is connected with the fixed cold water tank through a first sampling mechanism, and the detector is connected with the mixer through a second sampling mechanism; the first sampling mechanism comprises a first connecting pipe and a first sampler connected to the first connecting pipe, the first connecting pipe is connected between the control device and the constant-temperature water tank, and the detector is connected with the first sampler; the second sampling mechanism comprises a second connecting pipe and a second sampler connected to the second connecting pipe, the second connecting pipe is connected between the control device and the mixer, and the detector is connected to the second sampler.

Furthermore, an ion exchanger is arranged on the third pipeline and is positioned between the regulating valve and the fixed cold water tank.

Further, a flow meter is arranged on the third pipeline and located between the regulating valve and the ion exchanger.

Furthermore, a filter screen is arranged on the third pipeline, and the filter screen is positioned between the ion exchanger and the fixed cold water tank.

Furthermore, two connecting valves are arranged on the third pipeline at intervals, and the filter screen is positioned between the two connecting valves.

Further, the generator water cooling system further comprises a water drainage tank, the water cooling tank is communicated with the water drainage tank through a fourth pipeline, and a water drainage valve is arranged on the fourth pipeline.

Further, the fourth pipeline comprises a connecting pipe connected with the fixed cold water tank and a U-shaped pipe connected with the drainage tank, and the drainage valve is connected to the connecting pipe;

the opening of the U-shaped pipe faces downwards, the upper end of the U-shaped pipe is connected with a communicating pipe communicated with the U-shaped pipe, and the communicating pipe is communicated with the outside of the U-shaped pipe; a first connecting position is arranged between the U-shaped pipe and the communicating pipe, a second connecting position is arranged between the connecting pipe and the fixed cold water tank, and the first connecting position is located above the second connecting position.

Further, a float valve is arranged in the drainage tank.

By adopting the technical scheme, the method has the following beneficial effects:

the technical scheme of the invention provides a generator constant cooling water system which comprises a first liquid supply device, a second liquid supply device, a mixer, a constant cooling water tank and a control device. The first liquid supply device is connected with the mixer through a first pipeline, the second liquid supply device is connected with the mixer through a second pipeline, the mixer is connected with the fixed cold water tank through a third pipeline, and a regulating valve capable of being opened and closed is arranged on the third pipeline. The control device comprises a detector for detecting the property of the liquid and a controller capable of controlling the opening and closing of the regulating valve, and the detector is in communication connection with the controller. The mixer and the fixed cold water tank are respectively connected with the detector. The controller is connected with the regulating valve in a communication mode. The generator water cooling system is convenient for workers to operate, working fatigue is reduced, the control device controls the regulating valve to be opened and closed, the mixer automatically provides liquid meeting the standard for the water cooling tank, and the automation degree is improved.

Drawings

Fig. 1 is a schematic diagram of a generator stator cooling water system according to an embodiment of the invention.

FIG. 2 is a schematic view of a first liquid supply device, a second liquid supply device, and a mixer in an embodiment of the invention.

FIG. 3 is a schematic diagram of a mixer and a regulator valve in accordance with an embodiment of the present invention.

Fig. 4 is a schematic diagram of a control device according to an embodiment of the invention.

Fig. 5 is a schematic diagram of a fixed cold water tank and a fourth pipeline according to an embodiment of the present invention.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings.

It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

As shown in fig. 1 to 4, a generator chilled water system 10 according to an embodiment of the present invention includes a first liquid supply device 1, a second liquid supply device 2, a mixer 3, a chilled water tank 4, and a control device 5.

The first liquid supply device 1 is connected with the mixer 3 through a first pipeline 11, the second liquid supply device 2 is connected with the mixer 3 through a second pipeline 21, the mixer 3 is connected with the fixed cold water tank 4 through a third pipeline 31, and the third pipeline 31 is provided with a regulating valve 311 capable of being opened and closed.

The control device 5 comprises a detector 51 for detecting the property of the liquid and a controller 52 capable of controlling the opening and closing of the regulating valve 311, and the detector 51 is in communication connection with the controller 52. The mixer 3 and the chilled water tank 4 are connected to the detector 51, respectively. Controller 52 is communicatively coupled to regulating valve 311.

The generator stator cooling water system 10 is used for generator stator cooling. For the generator adopting the 'internal water cooling' cooling mode, the cooling water is required to be pure water, namely the pH value of the cooling water is 8-9, the conductivity is less than 2.0 mu S/cm, and the Cu content is less than 20 mu g/L, so that the corrosion of a copper wire rod is slowed down. The generator stator cooling water system 10 can automatically supplement water, so that cooling water meets requirements, and the use is convenient.

The generator constant cooling water system 10 comprises a first liquid supply device 1, a second liquid supply device 2, a mixer 3, a constant cooling water tank 4 and a control device 5.

A first pipeline 11 is connected between the first liquid supply device 1 and the mixer 3, a second pipeline 21 is connected between the second liquid supply device 2 and the mixer 3, and a third pipeline 31 is connected between the mixer 3 and the fixed cold water tank 4.

The first liquid supply device 1 supplies the mixer 3 with the first liquid, and the second liquid supply device 2 supplies the mixer 3 with the second liquid, and the first liquid and the second liquid are mixed in the mixer 3. Wherein the first liquid is condensed water after ammonia addition, and the pH value of the first liquid is 8.5-9. The second liquid was demineralized water with a pH of 7.

Optionally, the first liquid supply device 1 includes a first liquid supply part and a second liquid supply part, wherein the first liquid supply part is arranged in the generator set, and the second liquid supply part is arranged in another adjacent generator set. The first liquid supply part and the second liquid supply part are respectively connected with the first pipeline 11 through a liquid supply pipe. Each liquid supply pipe is provided with a manual valve and a one-way valve.

Optionally, a manual valve and a one-way valve are also provided on the second line 21.

The third pipeline 31 is provided with a regulating valve 311, when the regulating valve 311 is in an open state, the third pipeline 31 is unblocked, the cooling liquid in the mixer 3 enters the fixed cooling water tank 4 through the third pipeline 31, and then the fixed cooling water tank 4 cools the stator of the generator. When the control valve 311 is in the closed state, the third pipe 31 is blocked, and the coolant in the mixer 3 is blocked by the control valve 311 and cannot enter the cooling water tank 4. The regulating valve 311 is an electric regulating valve which is assembled by connecting and combining an electric actuator and a regulating valve through mechanical connection and can be opened and closed by remote control.

Optionally, the regulating valve 311 is a solenoid valve.

The control means 5 comprises a detector 51 and a controller 52, the detector 51 being capable of detecting properties of the liquid, such as pH and conductivity. Optionally, the detector 51 is a water quality detector. The detector 51 has two detection ends, one of which is connected to the stationary cold water tank 4 for detecting the properties of the cooling liquid in the cold water tank 4. The other detection end is connected to the mixer 3 for detecting the properties of the cooling liquid in the mixer 3. The detector 51 is connected with the controller 52 in communication, and the data obtained by the detection of the detector 51 is transmitted to the controller 52.

The controller 52 is internally provided with a storage unit, a judgment unit and a control unit, the judgment unit is in communication connection with the detector 51, and the control unit is in communication connection with the regulating valve 311. The data detected by the detector 51 is transmitted to the judging unit, which judges the detected data and makes the control unit control the regulating valve 311 to operate according to the judgment result.

For example, when the determination unit determines that the pH of the coolant in the cold water tank 4 is greater than or less than the pH of the coolant in the mixer 3, the control unit controls the regulator valve 311 to be opened, and the coolant in the mixer 3 enters the cold water tank 4. When the judging unit judges that the pH of the coolant in the cold water tank 4 is equal to the pH of the coolant in the mixer 3, the control unit controls the regulating valve 311 to close.

It should be noted that the communication connection may be a wired connection or a wireless connection, where the wired connection may be implemented by a wired connection, and the wireless connection may be implemented by WiFi, infrared, or the like. As long as information can be transferred between the two.

The generator is decided cold water system 10 that so sets up can examine the condition of survey cold water tank 4 internal cooling liquid in real time, under the condition that the coolant liquid in deciding cold water tank 4 is unsatisfactory, can supply the coolant liquid that meets the requirements to deciding cold water tank 4, has improved degree of automation, makes things convenient for people to use, has also prolonged the life of stator.

Optionally, pressure reducing valves are disposed on both the first and second pipelines 11 and 21 to reduce the pressure in the first and second pipelines 11 and 21, so that the first and second pipelines 11 and 21 are not easily damaged.

In one embodiment, as shown in fig. 1-2, a first adjustable valve 111 is disposed on the first pipeline 11 and a second adjustable valve 211 is disposed on the second pipeline 21. The first regulating valve 111 and the second regulating valve 211 are respectively connected with the controller 52 in a communication way, and the controller 52 can control the first regulating valve 111 and the second regulating valve 211 to open and close.

Specifically, the first and second regulating valves 111 and 211 are also electric regulating valves. The first and second regulating valves 111, 211 are each connected in communication with a control unit of the controller 52. When the first regulating valve 111 is opened, the first pipeline 11 is unblocked, and the first liquid in the first liquid supply device 1 enters the mixer 3 through the first pipeline 11. When the first regulating valve 111 is closed, the first line 11 is blocked. When the second regulating valve 211 is opened, the second pipe 21 is opened, and the second liquid in the second liquid supply device 2 enters the mixer 3 through the second pipe 21. When the second regulator valve 211 is closed, the second line 21 is blocked. So configured, the ratio of the first liquid to the second liquid in the mixer 3 can be controlled to obtain cooling fluids of different pH or conductivity. So as to be conveniently mixed with the cooling liquid in the cooling water tank 4, and the cooling liquid meeting the requirements can be quickly obtained.

Alternatively, a manual regulating valve is disposed on each side of the first regulating valve 111, and when the first regulating valve 111 is damaged, the manual regulating valve may be closed to block the first pipeline 11, so as to facilitate replacement of the first regulating valve 111. Similarly, a manual regulating valve is respectively arranged on both sides of the second regulating valve 211, so that the second regulating valve 211 can be conveniently replaced.

In one embodiment, as shown in fig. 1 and 3-4, the detector 51 is connected to the chilled water tank 4 by a first sampling mechanism 6, and the detector 51 is connected to the mixer 3 by a second sampling mechanism 7. The first sampling mechanism 6 includes a first connection pipe 61 and a first sampler 62 connected to the first connection pipe 61, the first connection pipe 61 is connected between the control device 5 and the stationary cold water tank 4, and the detector 51 is connected to the first sampler 62. The second sampling mechanism 7 includes a second connection pipe 71 and a second sampler 72 connected to the second connection pipe 71, the second connection pipe 71 is connected between the control device 5 and the mixer 3, and the detector 51 is connected to the second sampler 72.

Specifically, a first sampling mechanism 6 is connected between the detector 51 and the stationary cold water tank 4, the first sampling mechanism 6 includes a first connecting pipe 61 and a first sampler 62, one end of the first connecting pipe 61 is connected with the stationary cold water tank 4, the other end is connected with the control device 5, the first sampler 62 is connected on the first connecting pipe 61, and the detector 51 is connected with the first sampler 62. The cooling liquid in the cooling water tank 4 can flow into the first connecting pipe 61 to contact with the first sampler 62, so that the first sampler 62 can sample conveniently, and the detector 51 can obtain the water quality condition of the cooling liquid in the cooling water tank 4 in real time.

Similarly, a second sampling mechanism 7 is connected between the detector 51 and the mixer 3, the second sampling mechanism 7 includes a second connection pipe 71 and a second sampler 72, one end of the second connection pipe 71 is connected to the cooling water tank 4, the other end is connected to the control device 5, the second sampler 72 is connected to the second connection pipe 71, and the detector 51 is connected to the second sampler 72. The cooling liquid in the cooling water tank 4 can flow into the first connecting pipe 61 to contact with the second sampler 72, so that the second sampler 72 can sample conveniently, and the detector 51 can obtain the water quality condition of the cooling liquid in the mixer 3 in real time

In one embodiment, as shown in fig. 1 and 3, an ion exchanger 312 is disposed on the third pipeline 31, and the ion exchanger 312 is located between the regulating valve 311 and the cooling water tank 4.

The ion exchanger 312 is capable of exchanging a part of ions in the coolant, and an ion exchanger is provided in the ion exchanger 312. The ion exchanger 312 has the functions of adjusting the pH value and the conductivity of the cooling liquid on line and reducing the copper content in the chilled water system, so that the cooling liquid entering the chilled water tank 4 is closer to the qualified requirement.

Optionally, two manual valves are provided on the third line 31, and the ion exchanger 312 is located between the two manual valves, so that the ion exchanger 312 is conveniently serviced.

Optionally, a bypass pipeline is connected to the third pipeline 31, two ends of the bypass pipeline are respectively connected to the third pipeline 31, and the ion exchanger 312 is located between two ends of the bypass pipeline. The coolant can continue to flow through the bypass line while servicing the ion exchanger 312.

In one embodiment, as shown in fig. 1 and 3, a flow meter 313 is disposed on the third pipeline 31, and the flow meter 313 is located between the regulating valve 311 and the ion exchanger 312.

The flow meter 313 is connected to the third line 31, and the measuring end of the flow meter 313 extends into the third line 31. The flow meter 313 is located between the regulating valve 311 and the ion exchanger 312, and can detect the flow of the cooling liquid in the third pipeline 31, so that the observation and the daily maintenance of workers are facilitated.

Optionally, two service valves are provided on the third line 31, with the flow meter 313 located between the two service valves, thus facilitating service of the flow meter 313.

Optionally, a service pipe is connected to the third pipeline 31, two ends of the service pipe are respectively connected to the third pipeline 31, and the flow meter 313 is located between the two ends of the service pipe. When the flow meter 313 is serviced, the coolant can continue to flow through the service pipe.

In one embodiment, as shown in fig. 1 and 3, a filter screen 314 is disposed on the third pipeline 31, and the filter screen 314 is located between the ion exchanger 312 and the cooling water tank 4.

Specifically, the filter screen 314 is disposed in the third pipeline 31 and is used for filtering the coolant in the third pipeline 31 to remove impurities in the coolant.

In one embodiment, as shown in fig. 1 and 3, two connection valves 315 are spaced apart from each other on the third pipeline 31, and the filter screen 314 is located between the two connection valves 315.

The connection valves 315 can be opened and closed, and when the filter screen 314 needs to be replaced, two connection valves 315 are closed and the third line 31 is blocked. Thus, the filter screen 314 is convenient to replace.

Optionally, a connecting branch is provided on the third pipeline 31, the connecting branch having a first branch end and a second branch end connected to the third pipeline 31, and the filter screen 314 is located between the first branch end and the second branch end. Thus, when the connection valve 315 is closed, the coolant can flow into the cooling water tank 4 through the connection branch, and normal operation is not affected.

In one embodiment, as shown in fig. 1 and 5, the generator chilled water system 10 further includes a drain tank 8, the chilled water tank 4 is communicated with the drain tank 8 through a fourth pipeline 41, and a drain valve 411 is disposed on the fourth pipeline 41.

In particular, the drain tank 8 is used to store the cooling liquid that is not satisfactory after use. When the cooling water tank 4 is filled with the cooling liquid and the cooling liquid is not satisfactory, the drain valve 411 is opened, and the cooling liquid in the cooling water tank 4 enters the drain tank 8 through the fourth pipeline 41 to be stored. Thus, the random discharge of the cooling liquid is avoided. The cooling liquid in the drainage box 8 can be recovered and reused after being treated, so that the waste is reduced.

In one embodiment, as shown in fig. 1 and 5, the fourth pipeline 41 includes an adapter pipe 412 connected to the stationary cold water tank 4 and a U-shaped pipe 413 connected to the drain tank 8, and a drain valve 411 is connected to the adapter pipe 412. The U-shaped pipe 413 has a downward opening, a communication pipe 414 communicating with the U-shaped pipe 413 is connected to an upper end of the U-shaped pipe 413, and the communication pipe 414 communicates with the outside of the U-shaped pipe 413. A first connection part 4131 is arranged between the U-shaped pipe 413 and the communication pipe 414, a second connection part 4121 is arranged between the connecting pipe 412 and the fixed cold water tank 4, and the first connection part 4131 is positioned above the second connection part 4121.

Specifically, the fourth pipeline 41 is formed by connecting an adapter pipe 412 and a U-shaped pipe 413, an opening of the U-shaped pipe 413 faces downward, one end of the adapter pipe 412 is connected with the constant-cooling water tank 4, the other end of the adapter pipe is connected with one end of the U-shaped pipe 413, and the other end of the U-shaped pipe 413 is connected with the drain tank 8. The U-shaped pipe 413 has a first arc section and a second arc end which are symmetrical, and the top end of the U-shaped pipe 413 is the position where the first arc section and the second arc section are connected. A communication pipe 414 is connected to the tip of the U-shaped pipe 413, and the communication pipe 414 communicates the U-shaped pipe 413 with the outside atmosphere.

When the cooling liquid is discharged from the cooling water tank 4, the cooling liquid enters the U-shaped pipe 413 through the connecting pipe 412, the cooling liquid gradually fills the first arc-shaped section, and after the first arc-shaped section is filled, the cooling liquid enters the second arc-shaped section and then enters the water discharge tank 8. When the coolant in the chilled water tank 4 is insufficient to fill the first arc, the coolant cannot enter the second arc. Therefore, the cooling liquid in the cooling water tank 4 is not completely emptied.

The joint of the connecting pipe 412 and the fixed cold water tank 4 is a first joint 4131, the joint of the U-shaped pipe 413 and the communicating pipe 414 is a second joint 4121, and the second joint 4121 is located above the first joint 4131. The communication pipe 414 communicates the U-shaped pipe 413 with the outside, and according to the principle of the communicating vessel, the liquid level of the cooling liquid in the fixed cold water tank 4 is as high as the liquid level of the cooling liquid in the first arc-shaped section. Therefore, when the level of the coolant in the stationary cold water tank 4 is higher than the second junction 4121, the coolant in the stationary cold water tank 4 can enter the connection pipe 412 and push the coolant in the first arc-shaped section into the second arc-shaped section. When the liquid level of the coolant in the stationary cooling water tank 4 is at the same height as the second junction 4121, the coolant in the stationary cooling water tank 4 does not flow into the adapter 412 while maintaining balance. So set up, realize deciding the regulation of liquid level in the cold water storage cistern 4, also make and decide and remain throughout in the cold water storage cistern 4 and hold the coolant liquid.

Optionally, a standard liquid level is arranged in the fixed cold water tank 4, and the standard liquid level is equal to the height of the second connecting part 4121.

In one embodiment, as shown in fig. 1, a float valve 81 is provided in the drain tank 8.

In particular, the drainage tank 8 has a connection to the hot well through a fifth pipe 82. The fifth pipe 82 communicates with the drain port of the drain tank 8. The hot well is an upright cylindrical component arranged at the bottom of the condenser. To collect the main condensed water generated by the continuous condensation of a large amount of dead steam. The cooling fluid in the drain tank 8 enters the hot well through a fifth pipe 82.

A float valve 81 is provided in the drain tank 8, and when the liquid level in the drain tank 8 is higher than the float valve 81, the float valve 81 is lifted up by buoyancy, a drain port is opened, and the coolant can enter the fifth pipe 82 through the drain port. When the liquid level in the drain tank 8 is against the float valve 81, the buoyancy is insufficient to float the float valve 81, the float valve 81 blocks the drain port, and the coolant cannot enter the fifth pipe 82. Thus, the automatic drainage function is realized.

Optionally, a drain valve 821 is provided on the fifth line 82.

In summary, the invention discloses a generator constant cooling water system, which comprises a first liquid supply device, a second liquid supply device, a mixer, a constant cooling water tank and a control device. The first liquid supply device is connected with the mixer through a first pipeline, the second liquid supply device is connected with the mixer through a second pipeline, the mixer is connected with the fixed cold water tank through a third pipeline, and a regulating valve capable of being opened and closed is arranged on the third pipeline. The control device comprises a detector for detecting the property of the liquid and a controller capable of controlling the opening and closing of the regulating valve, and the detector is in communication connection with the controller. The mixer and the fixed cold water tank are respectively connected with the detector. The controller is connected with the regulating valve in a communication mode. This cold water system is decided to generator passes through controlling means control regulation and control valve switching for the blender can be for deciding cold water tank replenishment coolant liquid, has improved degree of automation, and it is more convenient to use. The control device can also detect the properties of the cooling liquid in the mixer and the fixed cold water tank, and when the mixer is controlled to supplement the cooling liquid to the fixed cold water tank, the cooling liquid in the fixed cold water tank is kept in accordance with the requirement.

According to the needs, the above technical schemes can be combined to achieve the best technical effect.

The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.