CN214698331U - Water ring vacuum pump efficiency improving device - Google Patents
Water ring vacuum pump efficiency improving device Download PDFInfo
- Publication number
- CN214698331U CN214698331U CN202120917065.8U CN202120917065U CN214698331U CN 214698331 U CN214698331 U CN 214698331U CN 202120917065 U CN202120917065 U CN 202120917065U CN 214698331 U CN214698331 U CN 214698331U
- Authority
- CN
- China
- Prior art keywords
- water
- vacuum pump
- ring vacuum
- cold water
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a water ring vacuum pump carries and imitates device, concretely relates to industrial machine field, including water ring vacuum pump and DCS control system, fixed cold water moisturizing pipe on the back pipeline of water ring vacuum pump's sealed water cooler, utilize cold water moisturizing pipe to introduce sealed water cold water moisturizing water source, be fixed with the pneumatic normal moisturizing valve of sealed water on the cold water moisturizing pipe, install temperature sensor behind the pneumatic normal moisturizing valve of sealed water, be fixed with pneumatic cold water moisturizing valve on the cold water moisturizing pipe, install manual stop valve behind the pneumatic cold water moisturizing valve, install pressure sensor before the pneumatic cold water moisturizing valve on the pipeline. The utility model discloses can synthesize effective operating condition who judges water ring vacuum pump, in case the system breaks down, can fast switch over to normal operating mode, perhaps interlock stoppage water ring vacuum pump guarantees the operation safety of whole unit.
Description
Technical Field
The embodiment of the utility model provides a relate to industrial machine field, concretely relates to water ring vacuum pump carries and imitates device is applicable to the thermal power enterprise who installs water ring vacuum pump as the suction instrument of negative pressure system, also is suitable for trades such as electric power, metallurgy, steel, petrochemical industry, the oil refining of installing water ring vacuum pump.
Background
In the thermal power generation industry, a water ring vacuum pump is widely applied as a suction tool for vacuum establishment before a negative pressure system is started, non-condensable gas in the negative pressure system in the operation process is continuously pumped out, high vacuum of the negative pressure system is maintained, the overall thermodynamic cycle efficiency is improved, and the power generation coal consumption is reduced. The negative pressure system of the unit is huge, particularly in a low-load stage, after the system leaks, due to on-site noise and uncertainty of the leakage position of the negative pressure system, the leakage position is difficult to find in time, and therefore the water ring vacuum pump serving as a suction tool is required to improve output power, suck leaked gas out and maintain high vacuum of the negative pressure system. However, due to the limitation of the design conditions and the field conditions of the water-ring vacuum pump, when the temperature of sealing water in the vacuum pump body rises due to mechanical work, friction, heat transfer and the like, sealing water at the air suction end face and the air exhaust end face of the pump body is vaporized, the efficiency of the vacuum pump is seriously reduced, closed cooling water or open cooling water serving as sealing water cooling water of the vacuum pump is limited by environmental conditions, the temperature in summer is high, for example, a certain power plant in a Bohai Bay, the temperature of seawater in summer reaches 30 ℃, and the temperature of the closed cooling water serving as working fluid cooling water of the vacuum pump reaches 33 ℃, so that the sealing water of the vacuum pump cannot be effectively cooled, the efficiency of the vacuum pump is reduced, and the negative pressure of a unit is further influenced. And the fresh water moisturizing of thermal power factory often gets to large-scale reservoir bottom and draws water or underground deep well water, these water sources are very low in temperature when summer, keep between 12 ℃ -20 ℃ always, this cold source can be utilized by water ring vacuum pump completely, as the sealed water of vacuum pump, improve vacuum pump suction efficiency, even do not have the power plant of deep well groundwater or reservoir deep water source, equally can utilize central air conditioning refrigerated water as the sealed water of vacuum pump, and utilize these cold water as the sealed water source of vacuum pump and how can high-efficiently utilize this low temperature water source, guarantee the security and the stability of vacuum pump operation simultaneously and be the key point of the utility model.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a device is imitated to water ring vacuum pump lift to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: a water ring vacuum pump efficiency improving device comprises a water ring vacuum pump and a DCS control system, wherein a cold water replenishing pipe is fixed on a rear pipeline of a sealing water cooler of the water ring vacuum pump, a sealing water cold water replenishing water source is introduced by the cold water replenishing pipe, a sealing water pneumatic normal water replenishing valve is fixed on the cold water replenishing pipe, a temperature sensor is installed behind the sealing water pneumatic normal water replenishing valve and connected with the DCS control system, a pneumatic cold water replenishing valve is fixed on the cold water replenishing pipe, a manual stop valve is installed behind the pneumatic cold water replenishing valve, a pressure sensor is installed on a front pipeline of the pneumatic cold water replenishing valve, and the pressure sensor is connected with the DCS control system;
the outlet of the water ring vacuum pump is provided with a gas-water separator through a pipeline, the gas-water separator and the horizontal center line position height position of the water ring vacuum pump body are provided with an overflow pipe, an open overflow observer is fixed on the overflow pipe, a water level sensor is fixed inside the gas-water separator, and the water level sensor is connected with a DCS control system.
Further, the pipe diameter of the cold water replenishing pipe is 50mm, and the measuring range of the temperature sensor is between 10 ℃ and 50 ℃.
Further, the pressure sensor measures in the range of 0-1 MPa.
Further, the overflow pipe diameter is 75mm, the shape of overflow viewer is funnel-shaped.
Further, the cold water source of the water ring vacuum pump can utilize underground water of a water source place of a power plant or cold water at the bottom of a reservoir.
The embodiment of the utility model provides a have following advantage:
1. the utility model can comprehensively and effectively judge the running state of the water ring vacuum pump through the pressure sensor, the temperature sensor and the water level sensor which are arranged in the system, and once the system breaks down, the system can be quickly switched to a normal running mode or the water ring vacuum pump is stopped in an interlocking way, thereby ensuring the running safety of the whole unit;
2. the overflow observer arranged on the overflow pipeline can ensure that the operator on duty can visually judge the running state of the pump when checking the water-ring vacuum pump;
3. the utility model discloses a cold water source of water ring vacuum pump can utilize the water source ground groundwater of power plant or cold water in reservoir bottom, 7-8 months in summer, the temperature is all around 12 ℃ -20 ℃, because the sealed water volume of trading of water ring vacuum pump is little, even there is not the power plant of groundwater or reservoir bottom water, for example utilize city normal water to handle as the power plant of water source, or utilize sea water desalination as the power plant of water source, can utilize the refrigerated water of central air conditioning as the sealed water cold water moisturizing water source of water ring vacuum pump equally, can not increase the refrigeration burden of central air conditioning by a wide margin, but can make the unit improve apparent operating efficiency;
4. the utility model discloses a fire-fighting water pool or industrial water pool recycle can be introduced to water ring vacuum pump export gas-water separator's overflow water, do not cause the waste of water resource.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is an overall schematic diagram provided by the present invention;
FIG. 2 is a diagram showing the installation position and the equipment layout of a newly introduced cold water replenishing pipe provided by the present invention;
FIG. 3 is a schematic view of the installation of the gas-water separator and the overflow pipe at the outlet of the water ring vacuum pump according to the present invention;
in the figure: the system comprises a water ring vacuum pump 1, a DCS control system 2, a sealed water cooler 3, a sealed water pneumatic normal water replenishing valve 4, a pneumatic cold water replenishing valve 5, a manual stop valve 6, a gas-water separator 7, an overflow pipe 8, an overflow observer 9 and a water level sensor 10.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical scheme takes the example that a certain thermal power plant utilizes reservoir deep water as a vacuum pump cold water replenishing water source as an example: referring to the attached drawings 1-3 of the specification, the utility model provides a water ring vacuum pump effect-lifting device, which comprises a water ring vacuum pump 1 and a DCS control system 2, a cold water replenishing pipe is fixed on the rear pipeline of a sealing water cooler 3 of the water ring vacuum pump 1, a sealing water cold water replenishing water source is introduced by the cold water replenishing pipe, a sealed water pneumatic normal water replenishing valve 4 is fixed on the cold water replenishing pipe, a temperature sensor is arranged behind the sealed water pneumatic normal water replenishing valve 4, the temperature sensor is connected with a DCS control system 2, a pneumatic cold water replenishing valve 5 is fixed on the cold water replenishing pipe, a manual stop valve 6 is arranged behind the pneumatic cold water replenishing valve 5 and used for water quantity regulation and isolated maintenance, and a pressure sensor is arranged on a pipeline in front of the pneumatic cold water replenishing valve 5 and is connected with the DCS control system 2.
There is deareator 7 in the export of water ring vacuum pump 1 through the pipe mounting, deareator 7 is installed with the horizontal center line position high position of the 1 pump body of water ring vacuum pump with water ring vacuum pump, guarantees that the water moisturizing of the 1 pump body seal water of water ring vacuum pump can fully discharge, and the overflow mouth is installed and can be guaranteed to have sufficient sealed liquid in the 1 pump body horizontal center line position of water ring vacuum pump, guarantees the formation of water ring, be fixed with open overflow viewer 9 on the overflow pipe 8 for observe separator overflow water volume in the operation, deareator 7 inside is fixed with level sensor 10, level sensor 10 is connected with DCS control system 2, fire-fighting water pond or industrial water pond recycle can be introduced to deareator not cause the waste of water resource to the overflow water of deareator 7.
Further, the pipe diameter of the cold water replenishing pipe is 50mm, and the measuring range of the temperature sensor is between 10 ℃ and 50 ℃.
Further, the pressure sensor measures in the range of 0-1 MPa.
Further, the tube diameter of the overflow tube 8 is 75mm, and the overflow viewer 9 is funnel-shaped.
Furthermore, the cold water source of the water ring vacuum pump 1 can utilize underground water of a water source place of a power plant or cold water at the bottom of a reservoir, and the water temperature is about 12-20 ℃ in 7-8 months in summer, and because the sealed water exchange amount of the water ring vacuum pump 1 is small, even if the power plant without underground water or water at the bottom of the reservoir, such as a power plant using urban reclaimed water as a water source or a power plant using seawater desalination as a water source, the refrigerated water of a central air conditioner can be used as the sealed water cold water replenishing water source of the water ring vacuum pump 1, so that the refrigeration burden of the central air conditioner cannot be greatly increased, and the operation efficiency of the unit can be obviously improved.
The working principle is as follows:
the method comprises the following steps: before the water ring vacuum pump 1 is started, the original sealing water pneumatic normal water replenishing valve 4 is closed, the pneumatic cold water replenishing valve 5 is opened, the overflow of the gas-water separator 7 is checked to be normal through the overflow observer 9, the ring vacuum pump 1 is started, the manual stop valve 6 is adjusted, the overflow quantity of the gas-water separator 7 is kept at 1.5t/h-2t/h, through the continuous water change, the sealing water temperature in the pump body of the water ring vacuum pump 1 is kept between 20 and 25 ℃, the sealing water temperature is lower than the saturation temperature of the water ring vacuum pump 1 under the inlet pressure by about 10 ℃, and the efficient operation of the water ring vacuum pump 1 is ensured.
Step two: a pressure sensor is arranged in front of the cold water replenishing valve 5, in normal operation, the cold water pressure display value is between 0.3MPa and 0.5MPa, the original sealed water cooler 3 is still put into a standby state, once the cold water pressure is displayed to be reduced to be below 0.1MPa, the DCS control system 2 is used for automatically controlling, the sealed water pneumatic normal water replenishing valve 4 is opened in an interlocking way, and meanwhile, the cold water replenishing valve 5 is closed, so that the water ring vacuum pump 1 is recovered to the original operation mode;
step three: a temperature sensor is arranged behind the cold water replenishing valve 5 and used for monitoring the water temperature of the sealing water of the water ring vacuum pump 1 in operation, when the water temperature is close to the saturation temperature corresponding to the inlet pressure of the water ring vacuum pump 1, the sealing water is close to the vaporization edge, the output of the water ring vacuum pump 1 is about to drop, and whether the efficiency of a cold water source or a heat exchanger is reduced or not is checked in time;
step four: a water level sensor 10 is arranged on a gas-water separator 7 at the outlet of a water ring vacuum pump 1, liquid level data is transmitted to a DCS control system 2 for monitoring, in normal operation, the liquid level of the gas-water separator 7 is 20mm higher than the horizontal center line of the water ring vacuum pump 1, once the liquid level is reduced to be lower than the horizontal center line of the water ring vacuum pump 1, the internal sealing water quantity of the water ring vacuum pump 1 is insufficient, at the moment, the DCS control system 2 automatically controls, the sealing water pneumatic normal water replenishing valve 4 is opened in an interlocking mode, the cold water replenishing valve 5 is closed, the sealing water of the water ring vacuum pump 1 is cut to the original operation mode, and once the liquid level continues to be reduced to the liquid level 1/4 of the pump body of the water ring vacuum pump 1, the water ring vacuum pump 1 is automatically stopped in an interlocking mode.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (5)
1. The utility model provides a device is imitated to water ring vacuum pump, includes water ring vacuum pump (1) and DCS control system (2), its characterized in that: a cold water replenishing pipe is fixed on a rear pipeline of a sealed water cooler (3) of a water ring vacuum pump (1), a sealed water cold water replenishing water source is introduced by the cold water replenishing pipe, a sealed water pneumatic normal water replenishing valve (4) is fixed on the cold water replenishing pipe, a temperature sensor is installed behind the sealed water pneumatic normal water replenishing valve (4), the temperature sensor is connected with a DCS control system (2), a pneumatic cold water replenishing valve (5) is fixed on the cold water replenishing pipe, a manual stop valve (6) is installed behind the pneumatic cold water replenishing valve (5), a pressure sensor is installed on a front pipeline of the pneumatic cold water replenishing valve (5), and the pressure sensor is connected with the DCS control system (2);
the utility model discloses a water ring vacuum pump, including water ring vacuum pump (1), the export of water ring vacuum pump (1) has gas-water separator (7) through the pipe mounting, overflow pipe (8) are installed with the horizontal center line position high position of the water ring vacuum pump (1) pump body in gas-water separator (7), be fixed with open overflow viewer (9) on overflow pipe (8), gas-water separator (7) inside is fixed with level sensor (10), level sensor (10) are connected with DCS control system (2).
2. The water ring vacuum pump efficiency improving apparatus as claimed in claim 1, wherein: the pipe diameter of the cold water replenishing pipe is 50mm, and the measuring range of the temperature sensor is 10-50 ℃.
3. The water ring vacuum pump efficiency improving apparatus as claimed in claim 1, wherein: the measuring range of the pressure sensor is between 0 and 1 MPa.
4. The water ring vacuum pump efficiency improving apparatus as claimed in claim 1, wherein: the pipe diameter of the overflow pipe (8) is 75mm, and the overflow observer (9) is funnel-shaped.
5. The water ring vacuum pump efficiency improving apparatus as claimed in claim 1, wherein: the cold water source of the water ring vacuum pump (1) can utilize underground water of a water source place of a power plant or cold water at the bottom of a reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120917065.8U CN214698331U (en) | 2021-04-29 | 2021-04-29 | Water ring vacuum pump efficiency improving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120917065.8U CN214698331U (en) | 2021-04-29 | 2021-04-29 | Water ring vacuum pump efficiency improving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214698331U true CN214698331U (en) | 2021-11-12 |
Family
ID=78534934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120917065.8U Active CN214698331U (en) | 2021-04-29 | 2021-04-29 | Water ring vacuum pump efficiency improving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214698331U (en) |
-
2021
- 2021-04-29 CN CN202120917065.8U patent/CN214698331U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209129693U (en) | A kind of novel lubricating petrol station system | |
| CN214698331U (en) | Water ring vacuum pump efficiency improving device | |
| CN202954970U (en) | Efficient water ring vacuum pump complete device with oversized sucking rate | |
| CN203023070U (en) | XBZ vehicle-mounted fire pump sledge | |
| CN201568738U (en) | Seal gas recycling device of expansion machine | |
| CN201437457U (en) | Online automatic recovery device for oil tank volatile gas | |
| CN107165854B (en) | Automatic control and recovery device for sealing water of water supply pump | |
| CN208778054U (en) | Exhaust steam residual heat and condensate recovery device after the matched injector work done of steam turbine | |
| CN113074113A (en) | Efficiency improving device of water-ring vacuum pump and control method | |
| CN202770089U (en) | Heat pump drain recovering device | |
| CN205805990U (en) | A kind of equipment of recycling machine sealing liquid | |
| CN204532443U (en) | The circulatory system of the obstruct liquid of mechanical seal component | |
| CN207033819U (en) | Sealing Water for Feedwater Pump automatically controls and retracting device | |
| WO2013157989A1 (en) | System of leakage drains for a main circulating pump assembly | |
| CN208587989U (en) | A kind of Optimization-type heat-exchange unit pressure relief device | |
| CN206259807U (en) | A kind of Generator Stator Cooling water changes water overflow mechanism | |
| CN205858976U (en) | With the bearing block of reducing temperature for preventing leak fuel system on cement producing line | |
| CN206206327U (en) | A kind of automation hydraulic oil cooling device of column type hydraulic rotary drilling rig | |
| CN104930909A (en) | Cooling water circulating system | |
| CN212752053U (en) | Water-cooling closed circulation water supply system for pump station | |
| CN206174045U (en) | Frequency conversion deep -well pump | |
| CN111795587B (en) | Water circulation system and working method thereof | |
| CN217053592U (en) | Nuclear power plant is with interim water intake device of sea water | |
| CN205446495U (en) | Recirculated cooling water device suitable for oil -well rig braking system | |
| CN220302751U (en) | Sealing oil supplementing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |