Drainage device

Abstract

The utility model relates to the technical field of steam turbine drainage, in particular to a drainage device. The device comprises a hydrophobic container and a vacuum device. Wherein the drainage container is provided with a water inlet and a water outlet, and the water inlet is communicated with the drainage pipeline; and the vacuum device is communicated with the drainage container through an air extraction pipeline and is used for extracting air in the drainage container and the drainage pipeline. The drainage pipeline is communicated with the water inlet of the drainage container, the vacuum device extracts air from the drainage container and the drainage pipeline through the air extraction pipeline, the pressure in the drainage container and the drainage pipeline is reduced, and then the negative pressure state is achieved. The stored water in the drainage pipeline is driven by the pressure potential energy to flow into the drainage container, and the drainage pipeline recovers normal drainage. The drainage device can assist in drainage of the drainage pipeline, the risk that the condensed water in the drainage container enters the steam turbine due to the too high liquid level is avoided, and normal operation of the steam turbine is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine drainage technical field especially, relate to a drainage device. BACKGROUND

[0002] Steam turbine mainly functions is steam heat energy conversion into mechanical energy, and drives various mechanical equipment, occupies the pivotal position in the industrial field. Steam turbine in starting, shutdown and variable load operating condition, steam and steam turbine body and steam pipeline's inner wall contact, when steam temperature is lower than the saturation temperature corresponding to steam pressure, part steam will condense into water. If the condensate is not discharged in time, can enter the steam turbine inside, produce greater impact force to steam turbine blade, lead to steam turbine speed rises rapidly, influence steam turbine's normal operation.

[0003] At present, steam turbine drainage system has two drainage paths, one is through gravity self-flow drainage to waste water pool, one is drained to condenser. However, when the upstream and downstream pressure of drainage pipeline is consistent, the water in the drain trap will not be discharged normally, and the condensate gradually accumulates to cause the liquid level of the drain trap to increase. The continuous increase of the liquid level of the drain trap poses a risk of condensate entering the steam turbine interior. Therefore, there is an urgent need for a drainage device. SUMMARY

[0004] The utility model discloses a kind of drainage devices, which can assist steam turbine drainage pipeline drainage, avoid the risk of condensate entering steam turbine interior to cause steam turbine overspeed, and then ensure the normal operation of steam turbine.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The drainage device comprises:

[0007] A drainage container is provided with a water inlet and a water outlet, and the water inlet is communicated with the drainage pipeline.

[0008] A vacuum device is communicated with the drainage container through a suction pipeline, and the vacuum device can extract the gas in the drainage container and the drainage pipeline.

[0009] As an optional technical solution, the water inlet and the water outlet are spaced apart in the vertical direction on both sides of the drainage container.

[0010] As an optional technical solution, a water inlet pipeline is provided on the drainage container, one end of the water inlet pipeline is communicated with the drainage pipeline, the other end is communicated with the water inlet, and a isolation valve is provided on the water inlet pipeline.

[0011] As an optional technical scheme, the hydrophobic container is further provided with a water outlet pipeline, one end of the water outlet pipeline is communicated with the water outlet, and the other end is communicated with the outside, and a hydrophobic valve is arranged on the water outlet pipeline.

[0012] As an optional technical scheme, the hydrophobic device further comprises a liquid level meter, the liquid level meter is arranged on the hydrophobic container, and the liquid level meter is used for measuring the liquid level of water in the hydrophobic container.

[0013] As an optional technical scheme, the hydrophobic device further comprises an exhaust pipeline, the exhaust pipeline is communicated with the inside of the hydrophobic container, the exhaust pipeline is arranged on the top of the hydrophobic container, and an exhaust valve is arranged on the exhaust pipeline.

[0014] As an optional technical scheme, the hydrophobic device further comprises a vacuum gauge, and the vacuum gauge is used for measuring the air pressure in the hydrophobic container.

[0015] As an optional technical scheme, the vacuum device is a vacuum pump.

[0016] As an optional technical scheme, the hydrophobic device further comprises a support frame, and the hydrophobic container is arranged on the support frame.

[0017] As an optional technical scheme, the support frame comprises a first support part and a second support part, the hydrophobic device is arranged at one end of the first support part, the other end of the first support part is connected to the second support part, the first support part and the second support part are arranged vertically, a notch is arranged on the first support part, and the outer wall of the hydrophobic container abuts against the bottom wall of the notch.

[0018] The hydrophobic device has the following beneficial effects:

[0019] The utility model provides a kind of hydrophobic device, which comprises a hydrophobic container and a vacuum device. The hydrophobic container is provided with a water inlet and a water outlet, and the water inlet is communicated with a hydrophobic pipeline. The vacuum device is communicated with the hydrophobic container through an air extraction pipeline, and the vacuum device can extract the gas in the hydrophobic container and the hydrophobic pipeline. The hydrophobic pipeline is communicated with the water inlet of the hydrophobic container, and the vacuum device extracts air from the hydrophobic container and the hydrophobic pipeline through the air extraction pipeline. The internal pressure of the hydrophobic container and the hydrophobic pipeline decreases, and a negative pressure state is achieved. The stored water in the hydrophobic pipeline flows into the hydrophobic container under the driving of pressure potential energy, and the hydrophobic pipeline returns to normal drainage. The hydrophobic device can assist the hydrophobic pipeline in draining water, avoiding the risk of excessive condensation water level in the hydrophobic container entering the internal turbine, and ensuring the normal operation of the turbine. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the structure diagram of the hydrophobic device provided by the utility model embodiment.

[0021] In the drawings:

[0022] 1. Hydrophobic container; 11. Water inlet; 12. Water outlet;

[0023] 2. Vacuum device; 3. Evacuation pipe; 4. Isolation valve; 5. Hydrophobic valve; 6. Liquid level gauge; 7. Exhaust valve; 8. Vacuum gauge; 9. Support frame; 91. First support part; 92. Second support part; 93. Reinforcing part. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0026] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms “first”, “second”, “third” and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In the description of the present application, unless otherwise specified, the meaning of “multiple” is two or more.

[0028] In the description of the utility model, need explaining further, unless another explicit provision and limitation, term "arrangement", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electric connection. For ordinary skilled in the art, can understand the concrete meaning of the above terms in the utility model according to specific circumstances.

[0029] In the utility model, unless another explicit provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but are in contact through another feature between them. Moreover, first feature is "on", "above" and "on" second feature includes that first feature is directly above and obliquely above second feature, or just indicates that the horizontal height of first feature is higher than that of second feature. First feature is "under", "below" and "under" second feature includes that first feature is directly below and obliquely below second feature, or just indicates that the horizontal height of first feature is less than that of second feature.

[0030] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0031] The technical scheme of the utility model is further illustrated by the specific embodiments below. Figure 1

[0032] ​Condensate water is produced in the process of steam turbine operation, and the condensate water needs to be discharged in time through a drainage system to ensure the normal operation of the steam turbine. In order to ensure the normal discharge of the condensate water in the drainage pipeline, the utility model provides a drainage device, which comprises a drainage container 1 and a vacuum device 2. The drainage container 1 is provided with a water inlet 11 and a water outlet 12, and the water inlet 11 is communicated with the drainage pipeline. The vacuum device 2 is communicated with the drainage container 1 through an air extraction pipeline 3, and the vacuum device 2 can extract the gas in the drainage container 1 and the drainage pipeline. In detail, when the condensate water cannot be normally discharged through the steam turbine drainage pipeline, the drainage pipeline is communicated with the water inlet 11 of the drainage container 1, one end of the air extraction pipeline 3 is communicated with the drainage container 1, and the other end is communicated with the vacuum device 2. The vacuum device 2 extracts the air in the drainage container 1 and the drainage pipeline through the air extraction pipeline 3, the internal pressure of the drainage container 1 and the drainage pipeline is reduced, and then a negative pressure state is reached. The stored water in the drainage pipeline flows into the drainage container 1 under the driving of the pressure potential energy, and the drainage pipeline restores normal drainage. When the drainage container 1 is full of water, the water in the drainage container 1 is discharged to the outside by opening the water outlet 12. The drainage device can assist the drainage pipeline in draining water, avoids the risk that the condensate water in the drainage container 1 is too high to enter the inside of the steam turbine, and then ensures the normal operation of the steam turbine.

[0033] In the embodiment, the vacuum device 2 is a vacuum pump, which can extract the inside of the drainage container 1 and the drainage pipeline to a negative pressure state. The vacuum pump is small in size, convenient to carry and install, saves the occupied space, and is stable and reliable in operation, and can be operated for a long time, thereby ensuring the stability of the operation of the drainage device.

[0034] Further, the water inlet 11 and the water outlet 12 are arranged on the two sides of the drainage container 1 along the vertical direction. Specifically, the water inlet 11 is located at the top of the drainage container 1, which facilitates the communication between the drainage container 1 and the drainage pipeline. The water outlet 12 is located at the bottom of the drainage container 1, and when the drainage container 1 is full of water, the water can be discharged more conveniently by using the gravity of the condensate water.

[0035] Further, the drainage container 1 is provided with an inlet pipeline, one end of the inlet pipeline is communicated with the drainage pipeline, and the other end is communicated with the water inlet 11. The inlet pipeline is provided with an isolation valve 4. The isolation valve 4 is arranged on the inlet pipeline, and the opening and closing of the isolation valve 4 makes the communication and isolation operation of the drainage container 1 and the drainage pipeline more convenient.

[0036] Further, the water draining device further comprises a water outlet pipeline, one end of the water outlet pipeline is communicated with the water outlet 12, and the other end is communicated with the outside, and a water draining valve 5 is arranged on the water outlet pipeline. When the water draining pipeline is dredged by using the device, the water draining valve 5 is closed, so that the sealing of the water draining container 1 is ensured, and the vacuum device 2 can better drain the water draining container 1 and the water draining pipeline; when the water draining container 1 is full of water, the water draining valve 5 is opened, so that the water in the water draining container 1 can be conveniently drained.

[0037] In the embodiment, the water draining device further comprises a liquid level meter 6, which is arranged on the water draining container 1 and is used for measuring the liquid level of the water in the water draining container 1. Specifically, the liquid level meter 6 is arranged at one end of the water draining container 1, and the dredging state of the water draining pipeline can be grasped through the liquid level meter 6, that is, when the water draining pipeline is dredged, the water flows to the water draining container 1, and the liquid level meter 6 displays the liquid level of the water in the water draining container 1; and the liquid level of the water in the water draining container 1 can be observed in real time through the liquid level meter 6, so that the water in the water draining container 1 can be treated in time when the water draining container 1 is full of water.

[0038] Further, the water draining device further comprises an exhaust pipeline, which is communicated with the inside of the water draining container, and is arranged at the top of the water draining container 1, and an exhaust valve 7 is arranged on the exhaust pipeline. The inside of the water draining container 1 and the water draining pipeline is drained to a negative pressure state by using the vacuum device 2, the water in the water draining pipeline flows to the water draining container 1 after the water draining pipeline is dredged, and the inside of the water draining container 1 and the water draining pipeline is still in a negative pressure state in this process; when the water draining container 1 is full of water, the exhaust valve 7 on the exhaust pipeline is opened, the negative pressure state in the water draining container 1 is destroyed, and the water draining valve 5 is opened, so that the condensed water in the water draining container 1 can be emptied faster. The arrangement is beneficial to improving the water draining efficiency of the water draining device.

[0039] The water draining device further comprises a vacuum gauge 8, which is used for measuring the air pressure in the water draining container 1. In the embodiment, the vacuum gauge 8 is arranged at the top of the water draining container 1, and the vacuum gauge 8 measures the relative value of the air pressure in the water draining container 1 and the atmospheric pressure, so that the air pressure in the water draining container 1 can be observed in real time through the vacuum gauge 8, and the vacuum state in the water draining container 1 is determined.

[0040] In order to support the hydrophobic container 1, in the embodiment, the hydrophobic device further comprises a support frame 9, and the hydrophobic container 1 is arranged on the support frame 9. Further, the support frame 9 comprises a first support part 91 and a second support part 92, the hydrophobic device is arranged at one end of the first support part 91, the other end of the first support part 91 is connected to the second support part 92, the first support part 91 and the second support part 92 are arranged vertically, and the first support part 91 is provided with a notch, and the outer wall of the hydrophobic container 1 abuts against the bottom wall of the notch. Specifically, in the embodiment, the second support part 92 is placed along the horizontal direction, the first support part 91 and the second support part 92 are arranged vertically, and the first support part 91 is used for supporting the hydrophobic container 1. The top end of the first support part 91 is provided with a notch, the shape of the notch is consistent with the shape of the hydrophobic container 1, the hydrophobic container 1 is placed in the notch, and the outer wall of the hydrophobic container 1 abuts against the bottom wall of the notch. This arrangement can improve the stability of the connection between the first support part 91 and the hydrophobic container 1.

[0041] Further, the support frame 9 further comprises a reinforcing part 93, and the two sides of the reinforcing part 93 are connected to the first support part 91 and the second support part 92 respectively. The arrangement of the reinforcing part 93 further improves the stability of the structure of the support frame 9. In the embodiment, two reinforcing parts 93 are arranged on one support frame 9, and the two reinforcing parts 93 are arranged in the horizontal direction.

[0042] In the embodiment, two support frames 9 are arranged, and the two support frames 9 are arranged in the extension direction of the hydrophobic container 1. The arrangement of the two support frames 9 improves the stability of the support of the hydrophobic container 1. In other embodiments, the number of support frames 9 can also be three, four, etc., which can be set according to the use requirements, and is not limited here.

[0043] The specific process of the hydrophobic device provided in the embodiment of the utility model for dredging the steam turbine hydrophobic pipeline is described in detail as follows: first, the hydrophobic pipeline which is not dredged is communicated with the water inlet pipeline on the hydrophobic container 1, the isolation valve 4 is opened, the hydrophobic valve 5 and the exhaust valve 7 are closed, and the vacuum pump is started; the vacuum pump draws air through the air exhaust pipeline 3 to the hydrophobic container 1 and the hydrophobic pipeline, the pressure in the hydrophobic container 1 is observed in real time through the vacuum gauge 8, and then it is determined whether the hydrophobic container 1 reaches the negative pressure state; after the inside of the hydrophobic container 1 is drawn to the negative pressure state, the stored water in the hydrophobic pipeline flows into the hydrophobic container 1 under the driving of the pressure potential energy, and the liquid level in the hydrophobic container 1 is observed through the liquid level gauge 6; when the liquid level gauge 6 shows that the liquid level in the hydrophobic container 1 is high, the vacuum pump is stopped, the exhaust valve 7 is opened to destroy the vacuum in the hydrophobic container 1, and then the hydrophobic valve 5 is opened, so that the water in the hydrophobic container 1 is gradually emptied, and then the dredging of the hydrophobic pipeline is completed.

[0044] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A hydrophobic device, characterized by, The application relates to a hydrophobic device. The hydrophobic device comprises: a hydrophobic container (1) provided with a water inlet (11) and a water outlet (12), the water inlet (11) being in communication with a hydrophobic pipeline; 2. The hydrophobic device of claim 1, wherein, a vacuum device (2) in communication with the hydrophobic container (1) through an air extraction pipeline (3), the vacuum device (2) being capable of extracting air in the hydrophobic container (1) and the hydrophobic pipeline.

3. The hydrophobic device of claim 1, wherein, The water inlet (11) and the water outlet (12) are arranged on two sides of the hydrophobic container (1) in a vertical direction.

4. The hydrophobic device of claim 3, wherein, The hydrophobic container (1) is provided with a water inlet pipeline, one end of the water inlet pipeline being in communication with the hydrophobic pipeline, and the other end being in communication with the water inlet (11), and the water inlet pipeline is provided with a separation valve (4).

5. The hydrophobic device of claim 1, wherein, The hydrophobic container (1) is further provided with a water outlet pipeline, one end of the water outlet pipeline being in communication with the water outlet (12), and the other end being in communication with the outside, and the water outlet pipeline is provided with a hydrophobic valve (5).

6. The hydrophobic device of claim 1, wherein, The hydrophobic device further comprises a liquid level meter (6) arranged on the hydrophobic container (1), and the liquid level meter (6) is used for measuring the liquid level of water in the hydrophobic container (1).

7. The hydrophobic device of claim 1, wherein, The hydrophobic device further comprises an exhaust pipeline arranged on the top of the hydrophobic container (1), the exhaust pipeline being in communication with the inside of the hydrophobic container (1), and the exhaust pipeline is provided with an exhaust valve (7).

8. The hydrophobic device of claim 1, wherein, The hydrophobic device further comprises a vacuum gauge (8) used for measuring the air pressure in the hydrophobic container (1).

9. The hydrophobic device of claim 1, wherein, The vacuum device (2) is a vacuum pump.

10. The hydrophobic device of claim 9, wherein, The hydrophobic device further comprises a support frame (9), and the hydrophobic container (1) is arranged on the support frame (9). The support frame (9) comprises a first support part (91) and a second support part (92), the hydrophobic device is arranged at one end of the first support part (91), the other end of the first support part (91) is connected to the second support part (92), the first support part (91) and the second support part (92) are arranged vertically, the first support part (91) is provided with a notch, and the outer wall of the hydrophobic container (1) abuts against the bottom wall of the notch.

Images