Intermediate water storage device and condenser vacuumizing system
By designing the sliding structure of the intermediate water storage device to block the negative pressure transmission of the condenser, the problem of intermittent drainage of the gas-liquid separator causing air to enter the condenser, and the vacuum environment of the condenser is maintained.
Patent Information
- Application Number
- CN202411631343.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-02-14
AI Technical Summary
In the existing condenser vacuum system, the intermittent drainage of the gas-liquid separator causes air to enter the condenser, destroying its vacuum environment.
Design an intermediate water storage device, including a shell, outlet pipe, casing and floating box, through the sliding structure of the floating box and casing, control the connection state between the outlet pipe and the casing, and block the negative pressure transmission of the condenser. Prevent air from entering.
It effectively blocks the negative pressure of the condenser and transfers to the gas-liquid separator to prevent air from entering the condenser, maintains the vacuum environment of the condenser and ensures its normal use.
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Figure CN119436886A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present disclosure belong to the technical field of condenser vacuum equipment, and specifically relate to an intermediate water storage tank and a condenser vacuum system. Background Art
[0002] In order to recover condensed water, the gas-liquid separator in the condenser vacuum system is directly connected to the condenser so that the water coming out of the gas-liquid separator is directly connected to the condenser, and finally participates in the water-steam cycle of the boiler and turbine.
[0003] However, there are problems with this method. Since the negative pressure of the condenser is very high and continuous, and the drainage of the gas-liquid separator is intermittent, when the outlet of the gas-liquid separator is connected to the outlet pipeline of the condenser, the negative pressure of the condenser is directly transmitted to the gas-liquid separator. Since the gas-liquid separator needs overflow drainage, that is, the gas-liquid separator is intermittently drained, it cannot be completely sealed in structure. After the drainage pipeline of the gas-liquid separator is connected to the condenser, air will be sucked into the pipeline into the condenser under the action of strong negative pressure, destroying the vacuum environment of the condenser. Summary of the invention
[0004] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide an intermediate water storage tank and a condenser vacuum pumping system.
[0005] A first aspect of the present disclosure provides an intermediate water storage device, the intermediate water storage device comprising:
[0006] A shell, the shell having a closed accommodating space, a water inlet being provided at the bottom of the shell, the water inlet being communicated with the accommodating space, and the water inlet being used to communicate with the gas-liquid separator;
[0007] a water outlet pipe, extending from the bottom of the shell to the accommodating space along the height direction of the shell, and used to communicate with the condenser;
[0008] a sleeve, the sleeve being slidably sleeved on the water outlet pipe, the sleeve being provided with a water leakage portion at one end away from the water outlet pipe, the water outlet pipe sealing the water leakage portion when the water outlet pipe and the sleeve are in a first state, and the water outlet pipe communicating with the accommodation space through the water leakage portion when the water outlet pipe and the sleeve are in a second state;
[0009] A buoyancy box is arranged in the accommodating space, and the buoyancy box blocks the end of the sleeve.
[0010] In some embodiments of the present disclosure, the water leakage portion is a water leakage hole.
[0011] In some embodiments of the present disclosure, the plurality of water leakage holes are spaced and evenly arranged along the circumference of the casing.
[0012] In some embodiments of the present disclosure, the plurality of water leakage holes are spaced apart and evenly arranged along the length direction of the casing.
[0013] In some embodiments of the present disclosure, the intermediate water storage further comprises:
[0014] A limiting member is arranged in the accommodating space, and along the height direction of the shell, the limiting member is located above the buoyancy box.
[0015] In some embodiments of the present disclosure, on a cross section perpendicular to the height direction of the shell, the limiting member passes through the center of the cross section, and both ends of the limiting member are respectively connected to the side walls of the shell.
[0016] In some embodiments of the present disclosure, the intermediate water storage further comprises:
[0017] An overflow pipe connects the accommodating space with the outside, and along the height direction of the shell, an inlet of the overflow pipe is close to the top of the shell.
[0018] In some embodiments of the present disclosure, the intermediate water storage further comprises:
[0019] A processing tank is located outside the shell and is connected to the outlet of the overflow pipe.
[0020] In some embodiments of the present disclosure, the overflow pipe includes a first pipe segment and a second pipe segment, the axis of the first pipe segment is perpendicular to the height direction of the shell, the first pipe segment has two inlets, the first pipe segment is connected to the second pipe segment, the second pipe segment is connected to the middle part of the first pipe segment, and the second pipe segment extends from the accommodating space to the outside of the shell.
[0021] The second aspect of the present disclosure proposes a condenser vacuum system, which includes: a gas-liquid separator, an intermediate water tank and a condenser, wherein the outlet of the gas-liquid separator is connected to the water inlet of the intermediate water tank, and the inlet of the condenser is connected to the water outlet pipe of the intermediate water tank, and the intermediate water tank is the intermediate water tank described in any of the above embodiments.
[0022] The intermediate water storage and condenser vacuum system of the disclosed embodiment is that when the gas-liquid separator is not drained, the negative pressure of the condenser generates suction on the float box through the outlet pipe. Under the combined effect of the gravity of the float box and the suction exerted on the float box, the float box is in the lowest position, and the sleeve and the outlet pipe are in the first state, and the leaking part of the sleeve is sealed by the outlet pipe; when the gas-liquid separator is drained, the drain water enters the accommodating space through the water inlet at the bottom of the shell. As the drain water continues to enter the accommodating space, the water level in the accommodating space gradually rises, and the buoyancy of the float box gradually increases. When the sum of the suction force of the negative pressure on the float box and the gravity of the float box is less than the buoyancy of the float box, the float box moves upward, thereby driving the sleeve to move upward relative to the outlet pipe. Continuously moving upward, the leaking part of the sleeve near one end of the buoyancy box is separated from the outlet pipe, the outlet pipe and the sleeve are in the second state, the outlet pipe no longer blocks the leaking part, the leaking part connects the accommodating space with the outlet pipe, the water in the accommodating space enters the sleeve through the leaking part, and enters the outlet pipe through the sleeve, and is finally discharged from the shell through the outlet pipe; as the water in the accommodating space is continuously discharged, the water level in the accommodating space continues to drop, the sleeve gradually moves downward along the outlet pipe, when the sum of the suction force of the negative pressure on the buoyancy box and the gravity of the buoyancy box is greater than the buoyancy of the buoyancy box, the sleeve and the outlet pipe are in the first state, the leaking part of the sleeve is blocked by the outlet pipe, the water in the accommodating space is no longer discharged by the outlet pipe, and is temporarily stored in the accommodating space. The water intermittently discharged from the gas-liquid separator is temporarily stored in the intermediate water storage tank. When the water in the intermediate water storage tank exceeds the temporary storage amount, it will enter the condenser through the drain pipe, thereby transporting the drainage from the gas-liquid separator to the condenser; at the same time, the intermediate water storage tank blocks the transmission of the negative pressure of the condenser to the gas-liquid separator, blocks the air in the gas-liquid separator from entering the condenser, prevents the air in the gas-liquid separator from destroying the vacuum of the condenser, and ensures the vacuum degree of the condenser so that the condenser can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a structural schematic diagram of a condenser vacuum system according to an embodiment of the present disclosure;
[0024] Figure 2 for Figure 1 A schematic diagram of the first part of the structure of the intermediate water storage tank shown;
[0025] Figure 3 for Figure 1 A schematic diagram of the second part of the structure of the intermediate water storage tank shown;
[0026] Figure 4 for Figure 2 A front view of the intermediate water storage tank;
[0027] Figure 5 for Figure 4 The BB section is shown;
[0028] Figure 6for Figure 5 The schematic diagram of the structure of the buoyancy box and the casing shown;
[0029] Figure 7 for Figure 1 The schematic diagram of the structure of the third part of the intermediate water storage tank is shown.
[0030] The reference numerals in the accompanying drawings represent the following:
[0031] 100. Intermediate water storage tank;
[0032] 1. Shell; 2. Water inlet; 3. Water outlet pipe; 4. Float box; 5. Casing; 51. Leaking part; 6. Overflow pipe; 61. First pipe section; 62. Second pipe section; 7. Stopper; 8. Processing tank;
[0033] 200. Gas-liquid separator;
[0034] 300. Condenser. DETAILED DESCRIPTION
[0035] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0036] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0037] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0038] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.
[0039] like Figures 1 to 7 As shown, an embodiment of the first aspect of the present disclosure provides an intermediate water storage tank, which includes: a shell, a water outlet pipe, a sleeve and a float. The shell has a closed accommodation space, and a water inlet is provided at the bottom of the shell. The water inlet is connected to the accommodation space, and the water inlet is used to connect to the gas-liquid separator. Along the height direction of the shell, the water outlet pipe extends from the bottom of the shell to the accommodation space, and the water outlet pipe is used to connect to the condenser. The sleeve is slidably mounted on the water outlet pipe, and a water leakage portion is provided at one end of the sleeve away from the water outlet pipe. When the water outlet pipe and the sleeve are in a first state, the water outlet pipe closes the water leakage portion. When the water outlet pipe and the sleeve are in a second state, the water outlet pipe is connected to the accommodation space through the water leakage portion. The float is arranged in the accommodation space, and the float blocks the end of the sleeve.
[0040] The intermediate water storage tank of the disclosed embodiment includes: a shell, a water outlet pipe, a sleeve and a float, the shell has a accommodating space, the sleeve and the float are both located in the accommodating space, the water outlet pipe extends from the accommodating space to the bottom of the shell, and the sleeve is slidably mounted on the water outlet pipe so that the sleeve and the water outlet pipe can switch between a first state and a second state. When the gas-liquid separator is not drained, the negative pressure of the condenser generates suction on the buoyancy box through the outlet pipe. Under the combined effect of the gravity of the buoyancy box and the suction exerted on the buoyancy box, the buoyancy box is in the lowest position, and the sleeve and the outlet pipe are in the first state, and the leaking part of the sleeve is sealed by the outlet pipe; when the gas-liquid separator is drained, the drainage water enters the accommodating space through the water inlet at the bottom of the shell. As the drainage water continues to enter the accommodating space, the water level in the accommodating space gradually rises, and the buoyancy of the buoyancy box gradually increases. When the sum of the suction force of the negative pressure on the buoyancy box and the gravity of the buoyancy box is less than the buoyancy of the buoyancy box, the buoyancy box moves upward, thereby driving the sleeve to move upward relative to the outlet pipe. As the sleeve continues to move upward, the sleeve approaches The leaking part at one end of the buoyancy box is separated from the outlet pipe, and the outlet pipe and the sleeve are in the second state. The outlet pipe no longer blocks the leaking part, and the leaking part connects the accommodating space with the outlet pipe. The water in the accommodating space enters the sleeve through the leaking part, and enters the outlet pipe through the sleeve, and is finally discharged from the shell through the outlet pipe. As the water in the accommodating space is continuously discharged, the water level in the accommodating space continues to drop, and the sleeve gradually moves downward along the outlet pipe. When the sum of the suction force of the negative pressure on the buoyancy box and the gravity of the buoyancy box is greater than the buoyancy of the buoyancy box, the sleeve and the outlet pipe are in the first state, the leaking part of the sleeve is blocked by the outlet pipe, and the water in the accommodating space is no longer discharged by the outlet pipe and is temporarily stored in the accommodating space.
[0041] The water intermittently discharged from the gas-liquid separator is temporarily stored by the intermediate water storage tank disclosed in the present invention. When the water in the intermediate water storage tank exceeds the temporary storage amount, the water will enter the condenser through the drain pipe, thereby transporting the drainage of the gas-liquid separator to the condenser; at the same time, the intermediate water storage tank blocks the transmission of the negative pressure of the condenser to the gas-liquid separator, blocks the air in the gas-liquid separator from entering the condenser, prevents the air in the gas-liquid separator from destroying the vacuum of the condenser, and ensures the vacuum degree of the condenser so that the condenser can be used normally.
[0042] In some embodiments of the present disclosure, Figure 5 , Figure 6 As shown, the leaking part is a leaking hole. When the sleeve and the water outlet pipe are in a first state, the water outlet pipe blocks the leaking hole of the sleeve, and the space in the water outlet pipe is isolated from the accommodation space; when the sleeve and the water outlet pipe are in a second state, the leaking hole connects the sleeve and the accommodation space, and the water outlet pipe is connected to the accommodation space, so that the water in the accommodation space enters the sleeve through the leaking hole, and enters the water outlet pipe through the sleeve, and finally exits the shell. Processing the leaking hole on the sleeve can reduce the difficulty of processing the leaking part and improve the production efficiency of the sleeve.
[0043] In some embodiments of the present disclosure, multiple water leakage holes are spaced and evenly arranged along the circumference of the casing, so that water around the casing enters the casing through the multiple water leakage holes. Multiple water leakage holes are spaced and evenly arranged along the circumference of the casing, so that the circumferential force of the casing is more uniform, preventing the concentration of force at a certain position of the casing, avoiding premature fatigue of the casing, and improving the service life of the casing.
[0044] In some embodiments of the present disclosure, a plurality of leakage holes are spaced and evenly arranged along the length direction of the casing to increase the leakage area of the leakage part, increase the rate of the leakage part, and reduce the amount of water overflowing from the intermediate water storage tank.
[0045] In some embodiments of the present disclosure, Figure 3 , Figure 5 As shown, the intermediate water storage device further includes: a limiter, which is arranged in the accommodation space and is located above the buoyancy box along the height direction of the shell. When the buoyancy box gradually moves upward, the limiter can limit the upward movement height of the buoyancy box to prevent the buoyancy box from contacting the top of the shell, avoiding premature fatigue of the shell due to the large buoyancy of the buoyancy box, and improving the service life of the shell.
[0046] In some embodiments of the present disclosure, in a cross section perpendicular to the height direction of the shell, the stopper passes through the center of the cross section, and both ends of the stopper are respectively connected to the side walls of the shell. In the cross section along the height direction of the shell, the cross-sectional area of the pontoon is greater than half of the cross-sectional area of the shell, that is, in the cross section along the height direction of the shell, the pontoon always passes through the center of the cross section of the shell, so as to ensure that the stopper can prevent the pontoon from continuing to move upward and limit the height of the pontoon.
[0047] In some embodiments of the present disclosure, Figures 2 to 5 As shown, the intermediate water storage tank further includes: an overflow pipe, the overflow pipe connects the accommodation space with the outside, and along the height direction of the shell, the inlet of the overflow pipe is close to the top of the shell. When the water in the accommodation space approaches the top of the shell, the water enters the overflow pipe from the inlet of the overflow pipe and is discharged from the accommodation space through the overflow pipe.
[0048] In some embodiments of the present disclosure, the overflow pipe includes a first pipe section and a second pipe section, the first pipe section has two inlets, the first pipe section is connected to the second pipe section, the second pipe section is connected to the middle of the first pipe section, and the second pipe section extends from the accommodation space to the outside of the shell. Water rising to the top of the accommodation space enters the first pipe section through the two inlets at both ends of the first pipe section, then enters the second pipe section through the middle of the first pipe section, and is discharged from the shell through the second pipe section.
[0049] Specifically, the axis of the first pipe section is perpendicular to the height direction of the shell to ensure that the two inlets are at the same horizontal position, to ensure that water enters the two inlets at the same time, and to increase the overflow rate of the overflow pipe. The axis of the second pipe section is parallel to the height direction of the shell to ensure that the overflow pipe saves installation space in the shell.
[0050] In some embodiments of the present disclosure, Figure 7 As shown, the intermediate water storage device also includes: a treatment tank, which is located outside the shell and connected to the outlet of the overflow pipe. Specifically, the outlet of the second pipe section of the overflow pipe is connected to the treatment tank. The water in the storage space enters the treatment tank through the overflow pipe, and the water discharged from the overflow pipe is treated to remove ammonia by chemical precipitation in the treatment tank before being discharged. Specifically, magnesium compounds and phosphoric acid or hydrogen phosphate are added to the water in the treatment tank to make NH4+ in the wastewater react with Mg2+ and PO4 3 - It reacts in aqueous solution to form magnesium ammonium phosphate precipitate with the molecular formula MgNH4P04.6H20, thereby achieving the purpose of removing ammonia.
[0051] The second aspect of the present disclosure provides a condenser vacuum system, such as Figure 1 As shown, the condenser vacuum system includes: a gas-liquid separator, an intermediate water storage tank and a condenser. The outlet of the gas-liquid separator is connected to the water inlet of the intermediate water storage tank, and the inlet of the condenser is connected to the water outlet pipe of the intermediate water storage tank. The intermediate water storage tank is the intermediate water storage tank described in any of the above embodiments.
[0052] The water intermittently discharged from the gas-liquid separator is temporarily stored in the intermediate water storage tank of the condenser vacuum system. When the water in the intermediate water storage tank exceeds the temporary storage volume, the water will enter the condenser through the drain pipe, thereby transporting the drainage of the gas-liquid separator to the condenser; at the same time, the intermediate water storage tank blocks the transmission of the negative pressure of the condenser to the gas-liquid separator, blocks the air in the gas-liquid separator from entering the condenser, prevents the air in the gas-liquid separator from destroying the vacuum of the condenser, and ensures the vacuum degree of the condenser so that the condenser can be used normally.
[0053] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.
Claims
1. An intermediate water storage tank, which is used to connect the gas-liquid separator and the condenser, characterized in that: The intermediate water storage tank comprises: A shell, the shell having a closed accommodating space, a water inlet being provided at the bottom of the shell, the water inlet being communicated with the accommodating space, and the water inlet being used to communicate with the gas-liquid separator; a water outlet pipe, extending from the bottom of the shell to the accommodating space along the height direction of the shell, and used to connect to the condenser; a sleeve, the sleeve being slidably sleeved on the water outlet pipe, the sleeve being provided with a water leakage portion at one end away from the water outlet pipe, the water outlet pipe sealing the water leakage portion when the water outlet pipe and the sleeve are in a first state, and the water outlet pipe communicating with the accommodation space through the water leakage portion when the water outlet pipe and the sleeve are in a second state; A buoyancy box is arranged in the accommodating space, and the buoyancy box blocks the end of the sleeve.
2. The intermediate water storage tank according to claim 1, characterized in that: The water leakage part is a water leakage hole.
3. The intermediate water storage tank according to claim 2, characterized in that: The plurality of water leakage holes are spaced and evenly arranged along the circumference of the sleeve.
4. The intermediate water storage tank according to claim 3, characterized in that: The plurality of water leakage holes are spaced and evenly arranged along the length direction of the sleeve.
5. The intermediate water storage tank according to claim 1, characterized in that: The intermediate water storage tank also includes: A limiting member is arranged in the accommodating space, and along the height direction of the shell, the limiting member is located above the buoyancy box.
6. The intermediate water storage tank according to claim 1, characterized in that: On a cross section perpendicular to the height direction of the shell, the limiting member passes through the center of the cross section, and two ends of the limiting member are respectively connected to the side walls of the shell.
7. The intermediate water storage tank according to claim 1, characterized in that: The intermediate water storage tank also includes: An overflow pipe connects the accommodating space with the outside, and along the height direction of the shell, an inlet of the overflow pipe is close to the top of the shell.
8. The intermediate water storage tank according to claim 7, characterized in that: The intermediate water storage tank also includes: A processing tank is located outside the shell and is connected to the outlet of the overflow pipe.
9. The intermediate water storage tank according to claim 7, characterized in that: The overflow pipe includes a first pipe section and a second pipe section, the axis of the first pipe section is perpendicular to the height direction of the shell, the first pipe section has two inlets, the first pipe section is connected to the second pipe section, the second pipe section is connected to the middle of the first pipe section, and the second pipe section extends from the accommodating space to the outside of the shell.
10. A condenser vacuum system, characterized in that: The condenser vacuum system includes: a gas-liquid separator, an intermediate water tank and a condenser, the outlet of the gas-liquid separator is connected to the water inlet of the intermediate water tank, the inlet of the condenser is connected to the water outlet pipe of the intermediate water tank, and the intermediate water tank is the intermediate water tank according to any one of claims 1 to 9.