Negative pressure water suction device and automatic water collection tank

Abstract

The invention discloses a negative pressure water suction device and an automatic water collection tank, and relates to the technical field of water collection tanks, the negative pressure water suction device comprises a tank body, a water suction pipe arranged in the tank body, a water pump arranged outside the tank body, and a condenser arranged at one end, extending out of the tank body, of the water suction pipe; the water suction pipe recycles a water source in the box body through the condenser, and the water pumping pump can pump recycled water into the condenser through the water suction pipe. By arranging the condenser, the water source in the box body is recycled through the condenser by utilizing the water suction pipe, the recycled water can be pumped into the condenser by the water pumping pump through the water suction pipe, the automatic recycling of the discharged qualified water source can be realized by the negative pressure generated by the condenser, and an additional power source is not needed; the water sources are gathered in the unified pipeline and then flow into the box body, the water source collection and temporary storage efficiency can be improved through the box body, the water quality of the recycled water sources can be ensured through the discharging assembly, and technical support is provided for sustainable development of a power plant.

Description

Technical Field

[0001] The present invention relates to the technical field of water collecting tanks, and more particularly to a negative pressure water suction device and an automatic water collecting tank. Background Art

[0002] In the process of modern power production, especially in thermal power plants, the utilization and recycling of water resources is an important link. During the operation of the direct air-cooled units in the power plant, some auxiliary machines on the machine side will discharge a large amount of qualified water sources (such as closed-circuit water and condensate). If these water sources are not recycled, it will cause considerable waste and also reduce the economy of the unit.

[0003] The existing water source recycling methods usually rely on pumps to provide kinetic energy to send the discharged water sources back into the system for reuse. However, the pumps cannot efficiently recycle all the discharged water sources, resulting in waste of some water resources. Especially in the case of low water pressure or unreasonable pipeline layout, the recycling efficiency of the pumps may be further reduced, and the recycling efficiency is not high. Some of the discharged qualified water sources cannot be effectively recycled and are directly discharged into the environment, causing waste of water resources.

[0004] Based on the above problems, we propose a negative pressure water suction device and an automatic water collecting tank. Summary of the Invention

[0005] Therefore, the technical problems to be solved by the present invention are: how to efficiently collect and temporarily store the discharged water sources for subsequent treatment and reuse, and how to ensure the water quality of the recycled water sources to provide technical support for the sustainable development of the power plant.

[0006] The above technical problems are solved by the following technical solutions: a recycling component, including a box body, a water suction pipe arranged inside the box body, a water pumping pump arranged outside the box body, and a condenser arranged at one end of the water suction pipe extending outside the box body; the water suction pipe recycles the water source inside the box body through the condenser, and the water pumping pump can pump the recycled water into the condenser through the water suction pipe.

[0007] In a preferred embodiment of the negative pressure water suction device of the present invention: a liquid level gauge is arranged on the outer wall of the box body, and a check valve at the water pump outlet is arranged between the water pumping pump and the condenser.

[0008] In a preferred embodiment of the negative pressure water suction device of the present invention: a primary stop valve and a secondary stop valve are respectively arranged on the outer wall of the water suction pipe.

[0009] In a preferred embodiment of the negative pressure water suction device of the present invention: a first water seal is arranged between the primary stop valve and the secondary stop valve.

[0010] The beneficial effects of the present invention are as follows: By providing a condenser, the water source in the box body is recycled through the water suction pipe passing through the condenser. The water pump can pump the recycled water into the condenser through the water suction pipe. The negative pressure generated by the condenser can achieve the automatic recycling of the qualified water source for external discharge, without the need for an additional power source, thereby reducing energy consumption, improving the recycling rate of water resources, and achieving energy conservation and environmental protection.

[0011] The present invention also provides an automatic water collection tank, which includes a collection component, including a first pipe connected to the outer wall of the tank body, a second pipe and a third pipe provided on the outer wall of the first pipe; a discharge component, including an overflow pipe and a drain pipe provided on the outer wall of the tank body.

[0012] In a preferred embodiment of the automatic water collection tank of the present invention: A first valve is provided on the outer wall of the first pipe, a second valve is provided on the outer wall of the second pipe, and a third valve is provided on the outer wall of the third pipe.

[0013] In a preferred embodiment of the automatic water collection tank of the present invention: A first branch pipe, a second branch pipe, a third branch pipe, a fourth branch pipe, and a fifth branch pipe are sequentially connected and provided on the outer wall of the second pipe.

[0014] In a preferred embodiment of the automatic water collection tank of the present invention: Both the second pipe and the third pipe are connected to the outer wall of the first pipe between the first valve and the tank body.

[0015] In a preferred embodiment of the automatic water collection tank of the present invention: A second water seal is provided on the outer wall of the overflow pipe. One end of the overflow pipe is connected to the tank body, and the other end is connected to the outer wall of the drain pipe.

[0016] In a preferred embodiment of the automatic water collection tank of the present invention: A drain valve is provided on the outer wall of the drain pipe, and a sampling valve is provided on the outer wall of the drain pipe between the drain valve and the tank body.

[0017] Another beneficial effect of the present invention is that by providing the first pipe, various water sources are converged in a unified pipe and then flow into the interior of the tank body. The setting of the tank body can improve the efficiency of water source collection and temporary storage, and the setting of the discharge component can ensure the water quality of the recycled water source, providing technical support for the sustainable development of the power plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention, rather than limiting the present invention. Among them:

[0019] Figure 1 Shows a schematic diagram of the overall connection of the negative pressure water suction device and the automatic water collection tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with specific embodiments and the accompanying drawings.

[0021] The terms used in the present invention are those general terms currently widely used in the art in consideration of the functions of the present invention. However, these terms may vary according to the intentions of those of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but based on the meanings of the terms and the overall description of the present invention.

[0022] Referring to Figure 1 , this embodiment provides a negative pressure water absorption device, including a recovery assembly 1, which includes a box body 11, a water suction pipe 12 arranged inside the box body 11, a water pump 13 arranged outside the box body 11, and a condenser 14 arranged at one end of the water suction pipe 12 extending outside the box body 11; the water suction pipe 12 recovers the water source inside the box body 11 through the condenser 14, and the water pump 13 can pump the recovered water into the condenser 14 through the water suction pipe 12.

[0023] The box body 11 is a convergence point for water source recovery, and the automatic recovery of the water source can be realized by using the negative pressure of the condenser 14 without an additional power source; one end of the water suction pipe 12 extends into the bottom of the box body 11, and the other end extends outside the box body 11 and is connected to the condenser 14. The negative pressure sucks the water in the box body 11 into the condenser 14 through the water suction pipe 12; the water pump 13 is connected to the water suction pipe 12 extending outside the box body 11. When the unit is operating normally, since the negative pressure is sufficient to drive the water flow, the water pump 13 will not operate at this time; when the unit is shut down and the negative pressure is insufficient, the water pump 13 will operate as an auxiliary device to ensure that the water source smoothly enters the condenser 14.

[0024] As an alternative embodiment, a liquid level gauge 111 is provided on the outer wall of the box body 11, and a check valve 131 is provided between the water pump 13 and the condenser 14.

[0025] The liquid level gauge 111 is installed on the outer wall of the box body 11 and is used to monitor the height of the water level in the box body 11; the check valve 131 at the water pump outlet is connected to the water suction pipe 12, which can prevent the backflow of the water source when the water pump 13 stops working, and at the same time ensure that the water flow can flow unidirectionally into the condenser 14.

[0026] As an alternative embodiment, a primary stop valve 121 and a secondary stop valve 122 are respectively provided on the outer wall of the water suction pipe 12.

[0027] The primary stop valve 121 and the secondary stop valve 122 are both connected to the suction pipe 12. The primary stop valve 121 and the secondary stop valve 122 are arranged between the check valve 131 at the pump outlet and the condenser 14. The primary stop valve 121 and the secondary stop valve 122 are used to control the opening or closing of the suction pipe 12, which can prevent air from entering the condenser 14 to ensure the effect of negative pressure water absorption.

[0028] As an alternative embodiment, a first water seal 123 is provided between the primary stop valve 121 and the secondary stop valve 122.

[0029] The first water seal 123 is arranged on the suction pipe 12 to prevent air from entering the condenser 14 through the suction pipe 12, but allows water flow through, ensuring the negative pressure environment inside the condenser 14.

[0030] When the unit is operating normally, the inside of the condenser 14 is in a negative pressure state. When operating normally, the back pressure of the unit is 10 kPa to 13.5 kPa. Calculated based on the local atmospheric pressure of 84.7 kPa in Jingtai County, Gansu Province, the negative pressure of the condenser is -74.7 kPa to -71.2 kPa. At this time, due to the negative pressure, the recycled water in the box 11 will enter the condenser 14 through the suction pipe 12. After the unit is shut down, the vacuum inside the condenser 14 disappears, and the recycled water in the box 11 can be pumped into the condenser 14 for recycling through the water pump 13 connected to the suction pipe 12.

[0031] Refer to Figure 1 , this embodiment provides an automatic water collection tank, including a collection component 2, including a first pipe 21 connected to the outer wall of the box 11, a second pipe 22 and a third pipe 23 arranged on the outer wall of the first pipe 21; a discharge component 3, including an overflow pipe 31 and a drain pipe 32 arranged on the outer wall of the box 11.

[0032] The collection component 2 is connected to the side wall of the box 11, which can collect the water sources discharged from auxiliary equipment into the box 11. One end of the overflow pipe 31 is connected to the side wall of the box 11, and the other end is connected to the outer wall of the drain pipe 32. The overflow pipe 31 can directly guide the overflow water to the drainage system when the water level in the box 11 reaches a certain height, ensuring that the water is safely discharged into the sump or other drainage facilities, preventing the box 11 from overflowing and protecting the system from damage.

[0033] As an alternative embodiment, a first valve 211 is arranged on the outer wall of the first pipe 21, a second valve 221 is arranged on the outer wall of the second pipe 22, and a third valve 231 is arranged on the outer wall of the third pipe 23.

[0034] During the operation of the main vacuum pump, the steam-water mixture generated is separated, and the separated water is discharged into the box body 11 through the first pipeline 21; during the operation of the condensate pump, sealing water is required to prevent leakage, and this part of the sealing water will ultimately be discharged into the box body 11 through the third pipeline 23; corresponding valves are provided on the outer walls of the first pipeline 21, the second pipeline 22, and the third pipeline 23, which can control the opening and closing of the water flow, thereby regulating the flow rates of each water source.

[0035] As an alternative embodiment, the outer wall of the second pipeline 22 is successively connected with a first branch pipe 222, a second branch pipe 223, a third branch pipe 224, a fourth branch pipe 225, and a fifth branch pipe 226.

[0036] The water in the ammonia water separation funnel generated during the operation of the hydrogen dryer is guided into the box body 11 through the first branch pipe 222; the bottom drain water generated during the filtration of the filter screen at the condensate pump inlet is guided into the box body 11 through the second branch pipe 223; the overflow water generated during the operation of the steam-water separator of the main vacuum pump is guided into the box body 11 through the third branch pipe 224; the excess water generated during the operation of the stator cooling water pump and the leakage water of the water collecting tray are guided into the box body 11 through the fourth branch pipe 225; the water in the drain funnel generated during the cooling of the oil sealing cooling water pipe is guided into the box body 11 through the fifth branch pipe 226; the settings of the first branch pipe 222, the second branch pipe 223, the third branch pipe 224, the fourth branch pipe 225, and the fifth branch pipe 226 can collect water sources from different points, increasing the flexibility and coverage of the system.

[0037] As an alternative embodiment, both the second pipeline 22 and the third pipeline 23 are connected to the outer wall of the first pipeline 21 between the first valve 211 and the box body 11.

[0038] All the externally discharged water sources are collected into the first pipeline 21 through their respective connected pipelines and are then collected into the box body 11 through the first pipeline 21.

[0039] As an alternative embodiment, a second water seal 311 is provided on the outer wall of the overflow pipe 31. One end of the overflow pipe 31 is connected to the box body 11, and the other end is connected to the outer wall of the drain pipe 32.

[0040] When the water level in the water tank 11 rises and reaches the opening of the overflow pipe 31, the water will flow out through the overflow pipe 31; the design of the second water seal 311 can prevent air and water from flowing back into the box body 11, avoiding pollution to the water sources inside the box body 11 and maintaining the cleanliness of the water quality and the tightness of the system.

[0041] As an alternative embodiment, a drain valve 321 is provided on the outer wall of the drain pipe 32, and a sampling valve 322 is provided on the outer wall of the drain pipe 32 between the drain valve 321 and the box body 11.

[0042] The drain valve 321 is arranged between the junction of the overflow pipe 31 and the drain pipe 32 and the box body 11; the drain pipe 32 is used to discharge the water inside the box body 11, and the drain valve 321 can control the opening and closing of the drain pipe 32. When the water quality is unqualified, the water can be discharged into the sump of the exhaust device or other drainage facilities through the drain valve 321; the sampling valve 322 is arranged between the box body 11 and the sampling valve 322, and a water sample can be taken from the box body 11 for water quality detection to determine whether to discharge.

[0043] The collection assembly 2 is used to collect the recyclable water of the auxiliary plant equipment, collect the high-quality qualified water source discharged externally and recycle it to the thermal system for utilization. At present, during the long-term operation of the unit, without the need for a power source, the high-quality externally discharged water can be recycled through the negative pressure generated by the condenser 14, so as to achieve the purpose of energy conservation and consumption reduction. The sampling valve 322 can take out the water sample in the box body 11 for detection. If the water quality is unqualified, the primary stop valve 121 and the secondary stop valve 122 on the suction pipe 12 are closed, and the water stored in the box body 11 is discharged into the sump of the exhaust device or other drainage facilities through the drain valve 321.

[0044] Finally, it should be pointed out that the methods and devices described in detail above are only examples, and those skilled in the art can modify these examples in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A negative pressure water absorption device, characterized in that: include, A recovery assembly (1) comprises a housing (11), a water suction pipe (12) arranged inside the housing (11), a water pump (13) arranged outside the housing (11), and a condenser (14) arranged at one end of the water suction pipe (12) extending outside the housing (11); The water suction pipe (12) recovers the water source inside the box (11) through the condenser (14), and the water pump (13) can pump the recovered water into the condenser (14) through the water suction pipe (12).

2. The negative pressure water absorption device according to claim 1, characterized in that: A liquid level gauge (111) is provided on the outer wall of the box body (11), and a water pump outlet check valve (131) is provided between the water pump (13) and the condenser (14).

3. The negative pressure water absorption device according to claim 2, characterized in that: The outer wall of the water suction pipe (12) is respectively provided with a primary stop valve (121) and a secondary stop valve (122).

4. The negative pressure water absorption device according to claim 3, characterized in that: A first water seal (123) is provided between the primary stop valve (121) and the secondary stop valve (122).

5. An automatic water collecting tank, characterized in that: The negative pressure water absorption device according to any one of claims 1 to 4 further comprises: A collecting assembly (2) comprising a first pipe (21) connected to the outer wall of the box body (11), a second pipe (22) and a third pipe (23) arranged on the outer wall of the first pipe (21); The discharge assembly (3) comprises an overflow pipe (31) and a drain pipe (32) which are arranged on the outer wall of the box body (11).

6. The automatic water collecting tank according to claim 5, characterized in that: A first valve (211) is provided on the outer wall of the first pipeline (21), a second valve (221) is provided on the outer wall of the second pipeline (22), and a third valve (231) is provided on the outer wall of the third pipeline (23).

7. The automatic water collecting tank according to claim 5 or 6, characterized in that: The outer wall of the second pipe (22) is sequentially connected with a first branch pipe (222), a second branch pipe (223), a third branch pipe (224), a fourth branch pipe (225) and a fifth branch pipe (226).

8. The automatic water collecting tank according to claim 7, characterized in that: The second pipeline (22) and the third pipeline (23) are both connected to the outer wall of the first pipeline (21) between the first valve (211) and the box body (11).

9. The automatic water collecting tank according to claim 8, characterized in that: The outer wall of the overflow pipe (31) is provided with a second water seal (311); one end of the overflow pipe (31) is connected to the box body (11), and the other end is connected to the outer wall of the drain pipe (32).

10. The automatic water collecting tank according to claim 9, characterized in that: The outer wall of the drainage pipe (32) is provided with a drain valve (321), and the outer wall of the drainage pipe (32) between the drain valve (321) and the box body (11) is provided with a sampling valve (322).

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