CN219974574U - Multistage U-shaped water seal system - Google Patents
Multistage U-shaped water seal system Download PDFInfo
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- CN219974574U CN219974574U CN202321443701.3U CN202321443701U CN219974574U CN 219974574 U CN219974574 U CN 219974574U CN 202321443701 U CN202321443701 U CN 202321443701U CN 219974574 U CN219974574 U CN 219974574U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 306
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model discloses a multi-stage U-shaped water seal system, which comprises multi-stage water seals connected in series in sequence, wherein any one stage of water seal comprises: sealing the barrel; one end of the water inlet pipe extends into the water sealed barrel, and the other end of the water inlet pipe is positioned outside the water sealed barrel; the water outlet pipe is arranged on the water sealing barrel and is provided with an outlet valve; one end of the bypass valve is communicated with a water inlet pipe positioned outside the water seal barrel, and the other end of the bypass valve is communicated with a water inlet pipe of the next-stage water seal; the water inlet pipe of the first-stage water seal is communicated with the water outlet pipeline of the shaft seal heater, the water outlet pipe of the last-stage water seal is communicated with the water inlet pipeline of the condenser, and the water outlet pipe except the last-stage water seal is also communicated with the water inlet pipe of the next-stage water seal to form a multistage serial water seal system. By adopting the mode, the on-line regulation effect on the water resistance of the water seal can be realized, the pressure difference change before and after the water seal is adapted, the purpose of balancing the water inlet and outlet of the multi-stage U-shaped water seal is achieved, and meanwhile, the economic loss caused by shutdown treatment of the multi-stage U-shaped water seal is avoided.
Description
Technical Field
The utility model relates to the technical field of water seals, in particular to a multi-stage U-shaped water seal system.
Background
In thermal power enterprises, the multi-stage U-shaped water seal is widely utilized and is commonly used for draining and recycling the shaft seal heater to the condenser, recycling the sealing water of the water supply pump to the condenser and the like. At present, two water seals exist, namely a single-stage U-shaped water seal and a multi-stage U-shaped water seal. The multi-stage U-shaped water seal has the advantages of low investment, no jamming, no corrosion, low maintenance and repair cost and the like, so that the multi-stage U-shaped water seal is more commonly used.
The current structure type of the multi-stage U-shaped water seal is composed of a water seal inlet manual door, a water seal barrel and a connecting pipe section, wherein a plurality of sections of independent water seal barrels are connected in series to form a fixed water resistance, so that the pressure difference between a drainage container and a condenser is resisted, the drainage of the drainage container is prevented from leaking vacuum, and the drainage of the drainage container is smoothly recycled into the condenser. The problems existing in the prior multi-stage U-shaped water seal are mainly reflected in that the water inlet and outlet of the water seal cannot achieve dynamic balance, because the side vacuum of a condenser at an outlet of the water seal is changed due to load change and seasonal influence, the fixed water resistance formed by the multi-stage U-shaped water seal cannot be adjusted, the pressure difference requirement before and after the water seal cannot be met, the water seal is not smooth in water drainage, and the safety production of a unit is influenced or the vacuum of the condenser and the economy of the unit are influenced due to the disappearance of the water seal.
Therefore, how to design an independently adjustable multi-stage U-shaped water seal system is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to provide a multi-stage U-shaped water seal system, wherein each stage of U-shaped water seal of the system can be independently thrown and retreated, so that the on-line regulation effect on water resistance of the water seal is realized, the pressure difference change before and after the water seal is adapted, the purpose of balancing water inlet and outlet of the multi-stage U-shaped water seal is achieved, the safety production and economy of a unit are ensured, and meanwhile, the economic loss caused by shutdown treatment of the multi-stage U-shaped water seal is avoided.
In order to achieve the above purpose, the utility model provides a multi-stage U-shaped water seal system, comprising multi-stage water seals connected in series in sequence, wherein any stage of water seal comprises:
sealing the barrel;
one end of the water inlet pipe extends into the water seal barrel, and the other end of the water inlet pipe is positioned outside the water seal barrel;
the water outlet pipe is arranged on the water sealing barrel and is provided with an outlet valve;
one end of the bypass valve is communicated with the water inlet pipe positioned outside the water seal barrel, and the other end of the bypass valve is communicated with the water inlet pipe of the water seal of the next stage;
the water inlet pipe of the water seal at the first stage is communicated with the water outlet pipeline of the shaft seal heater, the water outlet pipe of the water seal at the last stage is communicated with the water inlet pipeline of the condenser, and the water outlet pipe except for the water seal at the last stage is also communicated with the water inlet pipe of the water seal at the next stage to form a multistage series water seal system.
Preferably, the water outlet pipeline is further provided with a master valve, and the master valve is used for controlling the drainage flow in the shaft seal heater to flow into the water seal barrel of each stage.
Preferably, the main valve, the outlet valve and the bypass valve are all vacuum stop valves.
Preferably, the length of the water inlet pipe extending into the water sealed barrel is smaller than the length of the water sealed barrel.
Preferably, the lengths of the water inlet pipes of each stage extending into the water sealed barrel are the same, and the lengths of the water sealed barrels of each stage are also the same.
Preferably, the diameters of the water outlet pipeline, the water inlet pipes of each stage and the water outlet pipes of each stage are the same.
Preferably, the installation heights of the water inlet pipe and the water outlet pipe of the water seal of each stage are the same.
Preferably, the shaft seal heater is higher than the condenser.
Preferably, the multi-stage water seal is a four-stage water seal.
Compared with the background technology, the utility model is an independently-adjusted multi-stage U-shaped water seal system, realizes the independent switching of each stage of water seal by adding corresponding valves, realizes the on-line adjustment of water resistance of the water seal, adapts to the pressure difference change before and after the water seal, achieves the purpose of balancing water inlet and outlet of the multi-stage U-shaped water seal, ensures the safe production and economy of a unit, simultaneously avoids the economic loss caused by shutdown treatment of the multi-stage U-shaped water seal, and is easy to operate and simple in structure.
Specifically, the utility model comprises a multi-stage water seal which is sequentially connected in series, wherein any one stage of water seal comprises a water seal barrel, a water inlet pipe, a water outlet pipe and a bypass valve, one end of the water inlet pipe extends into the water seal barrel, the other end of the water inlet pipe is positioned outside the water seal barrel, the water outlet pipe is arranged on the water seal barrel, and an outlet valve is arranged for controlling the on-off of the water outlet pipe. One end of the bypass valve is communicated with the water inlet pipe, and the other end of the bypass valve is communicated with the water inlet pipe of the next stage. The outlet valve is closed by opening the bypass valve, so that the discharged water of the shaft seal heater can directly enter the next-stage water seal through the bypass valve, the independent throwing and retreating of the stage water seal are realized, the on-line adjusting effect on the water seal water resistance is realized, the pressure difference change before and after the water seal is adapted, and the water resistance that the multistage U-shaped water seal can be adjusted by stopping is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a multi-stage U-shaped water seal system according to an embodiment of the present utility model;
in the figure: 1. the device comprises a shaft seal heater 2, a condenser 3, a main valve 4, a water seal barrel 5, a water inlet pipe 6, a water outlet pipe 7, an outlet valve 8 and a bypass valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the present embodiment, the orientation or positional relationship indicated by "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.
As shown in fig. 1, in this embodiment, a multi-stage U-shaped water seal system is provided, the system includes a plurality of stages of water seals connected in series in sequence, and any stage of water seal includes a water seal tank 4, a water inlet pipe 5, a water outlet pipe 6, and a bypass valve 8. The drain adopts step-by-step overflow, and the steam in the shaft seal heater 1 is sealed by the water column in the multi-stage water seal barrel 4 and cannot leak to the condenser 2. One end of a water inlet pipe 5 extends into the water sealing barrel 4 and is used for draining water into the water sealing barrel 4, and the other end of the water inlet pipe is arranged outside the water sealing barrel 4 and is used for externally connecting a water draining channel.
The water outlet pipe 6 is arranged on the water sealed barrel 4 and is used as a drainage channel for draining water, and when the water column in the water sealed barrel 4 is increased to a certain height, the water is discharged out of the water sealed barrel 4 through the water outlet pipe 6. In addition, an outlet valve 7 for controlling the on-off state of the water outlet pipe 6 is also arranged on the water outlet pipe.
For the bypass valve 8, one end of the bypass valve is communicated with the water inlet pipe 5 positioned outside the water seal barrel 4, the other end of the bypass valve is communicated with the water inlet pipe 5 of the next-stage water seal, and as shown in fig. 1, each stage of water seal corresponds to one bypass valve 8, and the bypass valve 8 can change the hydrophobic circulation path, so that the independent switching of the corresponding water seal is realized, the on-line regulation effect of the water resistance of the water seal is realized, the pressure difference change before and after the water seal is adapted, and the purpose of balancing the water inlet and outlet of the multi-stage U-shaped water seal is achieved.
It should be noted that the water sealed barrel 4, the water inlet pipe 5, the water outlet pipe 6 and the bypass valve 8 in the above embodiment are described for any stage of water seal. On the basis, the water inlet pipe 5 serving as the first-stage water seal is also communicated with the water outlet pipeline of the shaft seal heater 1, so that the water can be drained for the first-stage water seal and the subsequent multi-stage water seal; the water outlet pipe 6 of the final-stage water seal is communicated with the water inlet pipeline of the condenser 2, so that the water drainage can be ensured to enter the condenser 2 finally.
In addition, the above indicates that the multi-stage water seals are arranged in series, wherein the series refers to that the water outlet pipe 6 except the last stage of water seal is also communicated with the water inlet pipe 5 of the next stage of water seal, so that the multi-stage water seal is formed in series.
As can be seen from the above embodiments, the present utility model is an independently adjustable multi-stage U-shaped water seal system, in which the bypass valve 8 is opened to close the outlet valve 7, so that the drain water discharged from the shaft seal heater 1 can directly enter the next stage of water seal through the bypass valve 8, thereby realizing independent switching of the stage of water seal, realizing on-line adjustment of water resistance of the water seal, adapting to pressure difference change before and after water seal, and avoiding the need of stopping to adjust the water resistance of the multi-stage U-shaped water seal.
The water outlet pipeline of the shaft seal heater 1 is also provided with a main valve 3, and the main valve 3 is used for controlling the drainage flow in the shaft seal heater 1 to flow into each stage of water seal barrels 4. Meanwhile, the main valve 3, the outlet valve 7 and the bypass valve 8 are all vacuum stop valves, so that the whole online independently-regulated multistage U-shaped water seal system is prevented from leaking vacuum, and the economic efficiency of the unit is prevented from being influenced. Of course, other valve forms can be adopted, and the water resistance of the multi-stage U-shaped water seal can be adjusted on line by other adjusting modes. On the premise of adopting the vacuum stop valve, various driving modes of the vacuum stop valve can be adopted, such as manual operation, pneumatic operation, electric operation, hydraulic operation and the like, and the details are not described here.
In addition, the length of the water inlet pipe 5 extending into the water sealing barrel 4 is smaller than the length of the water sealing barrel 4. Generally, the length of the water seal barrel 4 is slightly smaller than that of the water seal barrel, so that the water is smoothly injected, and excessive bubbles generated due to the overlarge length difference between the water inlet pipe 5 and the water seal barrel 4 in the injection process are prevented from influencing the provided pressure difference.
Meanwhile, the lengths of the water inlet pipes 5 at all levels extending into the water seal barrels 4 are the same, the lengths of the water seal barrels 4 at all levels are the same, the contained water drainage amount is guaranteed to be the same, and the pressure difference of each level of water seal is guaranteed not to be changed due to the adjustment of the multistage water seal stages.
Secondly, the installation heights of the water inlet pipe 5 and the water outlet pipe 6 of each level of water seal are the same, so that the purpose of installation is to ensure that the water repellent can realize water inlet and outlet of each level of water seal at the same height, and the pressure difference is maintained to be stable.
Finally, the diameters of the water outlet pipeline, the water inlet pipes 5 at all levels and the water outlet pipes 6 at all levels are the same, so that the design is that the drainage water amount is not changed in the whole process, and stable conveying is performed.
It should be noted that, the lengths and the installation positions of the water inlet pipe 5 and the water outlet pipe 6 are only the preferred schemes of the embodiment, and other arrangement modes and dimensions can be adopted for limiting, so that excessive limitation is not required, and the purpose that each stage of the U-shaped water seal can be independently thrown and retracted is ensured, which falls into the protection scope of the utility model.
As shown in fig. 1, the multi-stage water seal in this embodiment is a four-stage water seal, and of course, the multi-stage water seal may be selected according to practical situations, including but not limited to a four-stage water seal, which is not described herein.
Based on the above embodiment, it can be seen that the vacuum stop main valve behind the shaft seal heater 1 is used for transporting the multi-stage U-shaped water seal device, the shaft seal heater 1 is conducted to drain water and enter the multi-stage water seal, the water seal barrels 4 at each stage are connected with the bypass vacuum stop valve of the water seal barrel 4 through the vacuum stop valve at the outlet of the water seal barrel 4 at each stage, the drain water of the shaft seal heater 1 is recycled to the condenser 2 through the multi-stage water seal device, drain water recycling is achieved, and water balance is met. Of course, the shaft seal heater 1 and the condenser 2 are original equipment outside the system, and the condition that the height of the existing shaft seal heater 1 is higher than that of the condenser 2 is met.
When the system is used, taking a first-stage water seal as an example, the outlet valve 7 is closed to open the bypass valve 8, and at the moment, as the outlet end of the water seal barrel 4 is closed, the channel where the bypass valve 8 is positioned is selected as a circulating channel for drainage, and the drainage directly enters the water inlet pipe 5 of the next stage after passing through the bypass valve 8, so that the stage of water seal barrel 4 is independently thrown and retracted. Similarly, for any stage of water seal, the independent switching of the stage of water seal barrel 4 can be realized through the mode, so that the on-line regulation effect on water resistance of the water seal is realized, the pressure difference change before and after the water seal is adapted, the purpose of balancing water inlet and outlet of the multi-stage U-shaped water seal is achieved, the safety production and economy of a unit are ensured, meanwhile, the economic loss caused by shutdown treatment of the multi-stage U-shaped water seal is avoided, the operation is easy, and the structure is simple.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (9)
1. The utility model provides a multistage U type water seal system which characterized in that, including the multistage water seal of establishing ties in proper order, arbitrary one level the water seal includes:
sealing the barrel;
one end of the water inlet pipe extends into the water seal barrel, and the other end of the water inlet pipe is positioned outside the water seal barrel;
the water outlet pipe is arranged on the water sealing barrel and is provided with an outlet valve;
one end of the bypass valve is communicated with the water inlet pipe positioned outside the water seal barrel, and the other end of the bypass valve is communicated with the water inlet pipe of the water seal of the next stage;
the water inlet pipe of the water seal at the first stage is communicated with the water outlet pipeline of the shaft seal heater, the water outlet pipe of the water seal at the last stage is communicated with the water inlet pipeline of the condenser, and the water outlet pipe except for the water seal at the last stage is also communicated with the water inlet pipe of the water seal at the next stage to form a multistage series water seal system.
2. The multi-stage U-shaped water seal system of claim 1 wherein the outlet line is further provided with a master valve for controlling the flow of the water drain from the seal heater to the water seal barrels of each stage.
3. The multi-stage U-shaped water seal system of claim 2 wherein the main valve, the outlet valve, and the bypass valve are all vacuum shut-off valves.
4. The multi-stage U-shaped water seal system of claim 1 wherein the length of said inlet tube extending into said water seal barrel is less than the length of said water seal barrel.
5. The multi-stage U-shaped water seal system of claim 1 wherein the lengths of the inlet pipes of each stage extending into the water seal barrels are the same and the lengths of the water seal barrels of each stage are the same.
6. The multi-stage U-shaped water seal system of claim 1 wherein the diameters of the water outlet pipe, the water inlet pipe of each stage, and the water outlet pipe of each stage are the same.
7. The multi-stage U-shaped water seal system of claim 1 wherein the mounting heights of the inlet and outlet pipes of each stage of the water seal are the same.
8. The multi-stage U-shaped water seal system of claim 1 wherein the shaft seal heater is higher than the condenser.
9. The multi-stage U-shaped water seal system of claim 1 wherein the multi-stage water seal is a four-stage water seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321443701.3U CN219974574U (en) | 2023-06-07 | 2023-06-07 | Multistage U-shaped water seal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321443701.3U CN219974574U (en) | 2023-06-07 | 2023-06-07 | Multistage U-shaped water seal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219974574U true CN219974574U (en) | 2023-11-07 |
Family
ID=88580345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321443701.3U Active CN219974574U (en) | 2023-06-07 | 2023-06-07 | Multistage U-shaped water seal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219974574U (en) |
-
2023
- 2023-06-07 CN CN202321443701.3U patent/CN219974574U/en active Active
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