CN117189697A - Steam jet vacuum pump device using pressure regulating valve - Google Patents
Steam jet vacuum pump device using pressure regulating valve Download PDFInfo
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- CN117189697A CN117189697A CN202311210251.8A CN202311210251A CN117189697A CN 117189697 A CN117189697 A CN 117189697A CN 202311210251 A CN202311210251 A CN 202311210251A CN 117189697 A CN117189697 A CN 117189697A
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- vacuum pump
- condenser
- steam
- regulating valve
- pressure regulating
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000203 mixture Substances 0.000 claims description 14
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 33
- 238000011161 development Methods 0.000 abstract description 16
- 238000012423 maintenance Methods 0.000 description 7
- 238000010793 Steam injection (oil industry) Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Jet Pumps And Other Pumps (AREA)
Abstract
The invention relates to a steam jet vacuum pump device applying a pressure regulating valve, which comprises a steam ejector, a condenser and a low-power water ring vacuum pump, wherein an inlet of the steam ejector is connected with a steam inlet pipeline and receives power steam through the regulating valve, a suction port of the steam ejector is connected with a vacuumizing main pipe, an outlet of the steam ejector is connected with the condenser, an outlet of non-condensable gas of the condenser is connected with an inlet of the low-power water ring vacuum pump of the last stage, and a drainage outlet of the condenser is connected with a hot well. The steam jet vacuum pump device using the pressure regulating valve, disclosed by the invention, is subjected to novel development and design by utilizing the working principle of the pressure regulating valve, and the device can further improve the operation efficiency, greatly simplify the operation mode and maintain, and is more excellent in performance. The invention makes the application range of the steam jet vacuum pump device wider and overcomes the limitation of the prior art.
Description
Technical Field
The invention relates to the technical field of steam injection, in particular to the field of vacuum pumping equipment of condensers of turbo generator sets, and specifically relates to a steam injection vacuum pump device applying a pressure regulating valve.
Background
The steam jet technology uses superheated steam with a certain pressure as a power source to convert pressure energy into speed energy, so that the pressure of a suction area is reduced to generate vacuum.
The existing vacuum equipment widely applied to the condenser of the turbo generator set mainly comprises a water ring vacuum pump and a water jet air extractor.
However, both devices have common disadvantages:
1. the device has high running power consumption and does not save energy.
2. Cavitation affects the pumping performance and safety.
3. The effect of environmental temperature is great, and the efficiency is not high.
4. Limited by the saturation pressure of water, the ultimate vacuum is low.
5. And a great deal of exhaust steam in the sucked steam-gas mixture is discharged, and water resources are wasted.
6. The mechanical abrasion, scaling and erosion are easy to occur, the descaling, repair welding and the like are required, and the maintenance cost is high.
7. The matched motor is a fixed-frequency motor, the matched voltage is high, the matched current is large, and potential safety hazards exist when the matched motor is in an operation state for a long time.
These drawbacks of the above-mentioned existence are inherent and unavoidable in both types of vacuum-pumping equipment.
Therefore, in order to thoroughly solve the defects, a mature steam injection technology which is widely applied in practice is adopted to upgrade and reform the original vacuumizing equipment of the condenser of the turbo generator set by the users of a plurality of turbo generator sets from the aspects of economy, zero emission, maintenance amount, safety and the like.
In order to obtain a higher vacuum degree and a higher flow rate, the suction volume is increased according to the principle that the pressure energy is converted into the speed energy and the pressure in the suction area is reduced to generate vacuum. The method for achieving the aim mainly comprises the following steps: an atmospheric ejector+vacuum pump combination, or a Roots pump+vacuum pump combination, or an ejector+vacuum pump combination, or the like.
Vapor injection techniques and applications have long been developed and have not been developed to a great extent due to the limitations of design conditions.
The most common use is also the combination of ejector and vacuum pump, namely the traditional design mode: steam ejector + condenser + low power water ring vacuum pump. The device (driving) power steam enters the steam injector through the pneumatic regulating valve, the design of the scheme has a certain limitation in use, and because the turbo generator set is greatly influenced by load, the fluctuation of the power steam parameters can be greatly caused, and the normal operation of the steam injection vacuum pump is seriously hindered.
The application of the introduced pressure regulating valve in the steam jet vacuum pump device can better overcome the limitation, can improve the operation efficiency, greatly simplify the operation mode and maintenance, but the device has more throttling loss on the power steam, which is a disadvantageous side.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the steam jet vacuum pump device which is provided with the pressure regulating valve and has the advantages of excellent performance, less limitation, simple operation mode and wider application range.
In order to achieve the above object, a vapor jet vacuum pump apparatus of the present invention employing a pressure regulating valve is as follows:
the steam jet vacuum pump device using the pressure regulating valve is mainly characterized by comprising a steam jet device, a condenser and a low-power water ring vacuum pump, wherein an inlet of the steam jet device is connected with a steam inlet pipeline and receives power steam through the regulating valve, a suction port of the steam jet device is connected with a vacuumizing main pipe, an outlet of the steam jet device is connected with the condenser, an outlet of non-condensable gas of the condenser is connected with an inlet of the low-power water ring vacuum pump of the last stage, a drainage outlet of the condenser is connected with a hot well, the steam jet device transmits a steam-gas mixture to the condenser, the condenser condenses the steam in the steam-gas mixture into water and transmits the water to the hot well, and the condenser transmits non-condensable dry air in the steam-gas mixture to the low-power water ring vacuum pump.
Preferably, the device further comprises a pressure regulating valve, wherein the pressure regulating valve is arranged on the steam inlet pipeline and is positioned at the inlet of the steam injector.
Preferably, the device further comprises a flowmeter, wherein the flowmeter is arranged on the steam inlet pipeline and is positioned at the inlet of the pressure regulating valve.
Preferably, the device further comprises a manual valve and a thermal measuring point, wherein the manual valve and the thermal measuring point are respectively arranged at the suction pipeline and the steam inlet pipeline of the steam injector.
Preferably, the device further comprises a pneumatic butterfly valve mounted at the suction duct of the steam injector and located between the steam injector and the manual valve.
Preferably, the inlet of the thermal well is connected to a condenser.
Preferably, the device further comprises a pneumatic ball valve, and the pneumatic ball valve is arranged between the condenser and the hot well.
Preferably, the condenser comprises a shell, a tube sheet and a tube bundle, the tube sheet and the tube bundle passing through the shell of the condenser.
The steam jet vacuum pump device using the pressure regulating valve, disclosed by the invention, is subjected to novel development and design by utilizing the working principle of the pressure regulating valve, and the device can further improve the operation efficiency, greatly simplify the operation mode and maintain, and is more excellent in performance. The invention makes the application range of the steam jet vacuum pump device wider and overcomes the limitation of the prior art.
Drawings
Fig. 1 is a schematic structural view of a prior art vapor jet vacuum pump apparatus.
Fig. 2 is a schematic structural view of a vapor jet vacuum pump apparatus employing a pressure regulating valve according to the present invention.
Reference numerals:
1. steam ejector
2. Condenser
3. Small-power water ring vacuum pump
4. Pressure regulating valve
5. Flowmeter for measuring flow rate
6. Manual valve
7. Pneumatic butterfly valve
8. Pneumatic ball valve
9. Pneumatic regulating valve
Detailed Description
In order to more clearly describe the technical contents of the present invention, a further description will be made below in connection with specific embodiments.
The steam jet vacuum pump device using the pressure regulating valve comprises a steam jet device, a condenser and a low-power water ring vacuum pump, wherein an inlet of the steam jet device is connected with a steam inlet pipeline and receives power steam through the regulating valve, a suction port of the steam jet device is connected with a vacuumizing main pipe, an outlet of the steam jet device is connected with the condenser, an outlet of non-condensable gas of the condenser is connected with an inlet of the low-power water ring vacuum pump of the last stage, a drainage outlet of the condenser is connected with a hot well, the steam jet device transmits a steam-gas mixture to the condenser, the condenser condenses the water steam in the steam-gas mixture into water and transmits the water steam to the hot well, and the condenser transmits non-condensable dry air in the steam-gas mixture to the low-power water ring vacuum pump.
As a preferred embodiment of the invention, the device further comprises a pressure regulating valve, which is arranged on the steam inlet pipeline and is positioned at the inlet of the steam injector.
As a preferred embodiment of the invention, the device further comprises a flowmeter, wherein the flowmeter is arranged on the steam inlet pipeline and is positioned at the inlet of the pressure regulating valve.
As a preferred embodiment of the invention, the device further comprises a manual valve and a thermal measuring point, wherein the manual valve and the thermal measuring point are respectively arranged at the suction pipeline and the steam inlet pipeline of the steam injector.
As a preferred embodiment of the invention, the device further comprises a pneumatic butterfly valve mounted at the suction line of the steam injector and located between the steam injector and the manual valve.
As a preferred embodiment of the invention, the inlet of the thermal well is connected to a condenser.
As a preferred embodiment of the invention, the device further comprises a pneumatic ball valve, which is mounted between the condenser and the hot well.
As a preferred embodiment of the invention, the condenser comprises a shell, a tube sheet and a tube bundle, which pass through the shell of the condenser.
In the specific embodiment of the invention, the limitation of the prior art is overcome, so that the steam injector is under relatively stable working pressure for a long time, and a novel development design which can further improve the operation efficiency, greatly simplify the operation mode and maintenance and has more excellent performance is provided. Compared with the existing pneumatic regulating valve scheme, the cited pressure regulating valve scheme has the advantages of more excellent cost performance, wider application range and less change of steam consumption generated by the running of the device, both in running mode and maintenance and in installation and cost. The comprehensive use performance of the existing pneumatic regulating valve scheme can be embodied in the cited pressure regulating valve scheme, and the resetting can be carried out only by carrying out on-site resetting on a secondary instrument. The invention makes the use (working) environment of the steam jet vacuum pump device wider, and overcomes the limitation that the steam turbine generator unit is greatly influenced by load, and the normal operation of the steam jet vacuum pump is hindered due to fluctuation and change of power steam parameters.
The novel development design is developed and designed into a pressure regulating valve scheme by the existing pneumatic regulating valve scheme. The novel development design comprises a steam ejector, a condenser, a low-power water ring vacuum pump and the like. The utility model provides a steam ejector, the suction mouth of steam ejector link to each other with the evacuation female pipe through the governing valve, the export of steam ejector link to each other with the condenser, the non-condensable gas export of condenser link to each other with last level miniwatt water ring vacuum pump entry, the hydrophobic export of condenser link to each other with the hot well, steam ejector transmit vapour gas mixture to the condenser, the condenser condense vapour gas mixture in the water and transmit to the hot well, the condenser transmit non-condensable dry air in the vapour gas mixture to miniwatt water ring vacuum pump.
The novel development design is characterized in that the operation efficiency is further improved, and the operation mode is greatly and simply operated, so that the operation is safer and more worry-saving.
The novel development design has the advantages that the design of the structural device is simpler, the application range of the power steam pressure is wider, and the application range is wider.
The design of the control device is simplified in the novel development design, so that the operation requirement is reduced, and the operation error rate disappears.
The novel development and design pressure regulating valve scheme can be changed into a pneumatic regulating valve scheme as required.
The invention relates to a novel development design of application of a pressure regulating valve in a steam jet vacuum pump device, wherein the design (device) is connected with an original vacuumizing master pipe of a vacuumizing device, a power steam master pipe is arranged in front of a two-dot chain line block diagram of the vacuumizing device in the figure, and enters a steam injector after passing through the pressure regulating valve.
The condenser in the design (device) comprises a shell, a tube plate and a tube bundle, wherein the tube plate and the tube bundle penetrate through the shell of the condenser. The condenser is of a tube type structure.
The inlet of the hot well in the described design (device) is connected to the condenser.
The novel development design of the steam ejector, the condenser, the low-power water ring vacuum pump and the like in the design (device) can be designed according to the integrated process.
The design (device) also comprises a pneumatic ball valve, and the pneumatic ball valve is arranged between the condenser and the hot well.
The design (device) also comprises a manual valve, a pressure regulating valve and a thermal measuring point, wherein the manual valve, the pressure regulating valve and the thermal measuring point are all arranged at the steam inlet pipeline.
The design (device) also comprises a flowmeter which is arranged at the position of the steam inlet pipeline.
The design (device) also comprises a manual valve, a pneumatic butterfly valve and a thermal measuring point, wherein the manual valve, the pneumatic butterfly valve and the thermal measuring point are arranged at the suction pipeline of the steam injector.
The signal transmission directions of the pressure measuring points of the pressure regulating valve and the pneumatic regulating valve are different, a pressure signal after the pressure regulating valve is fed back to the pressure regulating valve executing structure to balance the valve opening, and a pressure signal after the pneumatic regulating valve is fed back to the DCS to control the valve opening.
The problems of economy, zero emission, maintenance and safety related to common condenser vacuumizing equipment (a water ring vacuum pump and a water jet air extractor) can be solved by upgrading and reforming a mature steam jet vacuum pump device which is widely applied in practice.
The energy saving function of the steam ejector, which is a core component in the steam jet vacuum pump apparatus, is not extremely exhibited.
The novel development design of the application of the pressure regulating valve in the steam jet vacuum pump device is that the pressure regulating valve is introduced, the valve inlet is connected with the power steam main pipe, and the valve outlet is connected with the steam injector, as shown in figure 1.
In the specific implementation mode of the invention, the invention aims to further develop the existing design by a new technical means, so that the application range of the steam jet vacuum pump device is wider, and the limitation of the steam jet vacuum pump device in use is overcome; the key difficulty of the novel development design is the knowledge of the pressure regulating valve and the safety protection of the device.
The invention relates to a valve opening degree self-balancing valve executing structure (spring) by utilizing power steam pressure energy, which forms a device with relatively constant pressure after valve, and is used in a use (working) environment with large power steam pressure fluctuation; especially the use (working) environment of the turbogenerator greatly influenced by the load; through the novel development design of the application of the pressure regulating valve in the steam jet vacuum pump device, the novel device can further improve the operation efficiency, and the performance is more excellent besides the novel device, the operation mode and the maintenance are greatly simple and convenient.
According to the invention, a set of steam jet vacuum pump device is additionally arranged on the original vacuumizing main pipe of the condenser in parallel, original vacuumizing equipment is kept unchanged, and the vacuum is rapidly established and reserved when a unit is started.
The steam ejector uses superheated steam as a power source, and vacuum is formed in the ejector through continuous compression and expansion of high-speed jet flow combined with medium.
The condenser condenses the superheated steam of the steam ejector and the water steam in the steam-gas mixture of the condenser into water, and the water enters the condensed water device again for recovery.
The low-power water ring vacuum pump of the last stage is continuously pressurized to be above the atmospheric pressure, and the non-condensable gas is directly emptied.
The suction side takes the lowest pressure (dry air partial pressure) of the condenser as a design reference point, and the suction quantity and the steam consumption matched with the steam ejector are calculated on the premise of fully considering the maximum allowable air leakage of the vacuumizing device. The pipeline that steam injector and former evacuation female pipe link to each other is the suction side, and the pipeline that steam injector received power steam is the admission side, and the pipeline that steam injector and condenser link to each other is the discharge side.
The invention relates to an application of a pressure regulating valve in a steam jet vacuum pump device, wherein power steam is input into a manual valve, the pressure regulating valve and a thermal measuring point through a pipeline and a flowmeter; a steam injector is arranged behind the pressure regulating valve; the suction side of the steam injector is provided with a manual valve, a pneumatic butterfly valve and a thermal measuring point; the condenser is provided with a pneumatic ball valve (drain heat inlet well recovery), a low-power water ring vacuum pump and the like.
The whole set of device design can adopt an integrated process design (integral mechanical and integrated thermal control arrangement).
The sight glass is arranged on the drainage pipeline of the tubular heat exchanger, so that the observation is convenient.
In practical application, the novel development and design site of the steam jet vacuum pump must be provided with a striking mark to prevent the nonstandard operation. If the space is limited on site, the whole lifting arrangement of the platform can be built.
The specific implementation manner of this embodiment may be referred to the related description in the foregoing embodiment, which is not repeated herein.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The steam jet vacuum pump device using the pressure regulating valve, disclosed by the invention, is subjected to novel development and design by utilizing the working principle of the pressure regulating valve, and the device can further improve the operation efficiency, greatly simplify the operation mode and maintain, and is more excellent in performance. The invention makes the application range of the steam jet vacuum pump device wider and overcomes the limitation of the prior art.
In this specification, the invention has been described with reference to specific embodiments thereof. It will be apparent, however, that various modifications and changes may be made without departing from the spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (8)
1. The utility model provides an use pressure control valve's steam jet vacuum pump device, its characterized in that, the device include steam ejector, condenser and low-power water ring vacuum pump, steam ejector's entry link to each other with the admission line to receive power steam through the governing valve, steam ejector's suction port link to each other with the evacuation female pipe, steam ejector's export links to each other with the condenser, the export of the non-condensable gas of condenser link to each other with the entry of low-power water ring vacuum pump of last level, the hydrophobic export of condenser link to each other with the hot well, steam ejector transmit vapour gas mixture to the condenser, the condenser condense water vapor in the vapour gas mixture into water and transmit to the hot well, the condenser transmit non-condensable dry air in the vapour gas mixture to low-power water ring vacuum pump.
2. The vapor jet vacuum pump apparatus employing a pressure regulating valve as recited in claim 1, further comprising a pressure regulating valve mounted on the vapor inlet conduit at the inlet of the vapor jet.
3. The vapor jet vacuum pump apparatus employing a pressure regulating valve as recited in claim 2, further comprising a flow meter mounted to the vapor inlet conduit at the inlet of the pressure regulating valve.
4. The vapor jet vacuum pump apparatus employing a pressure regulating valve as recited in claim 1, further comprising a manual valve and a thermal station, said manual valve and thermal station being mounted at a suction line and a vapor intake line of the vapor jet, respectively.
5. The vapor jet vacuum pump apparatus employing a pressure regulating valve as recited in claim 4 further comprising a pneumatic butterfly valve mounted at the suction line of the vapor jet between the vapor jet and the manual valve.
6. A vapor jet vacuum pump apparatus employing a pressure regulating valve as defined in claim 1, wherein said hot well inlet is connected to a condenser.
7. The vapor jet vacuum pump apparatus employing a pressure regulating valve as recited in claim 1, further comprising a pneumatic ball valve, said pneumatic ball valve being mounted between the condenser and the thermal well.
8. The vapor jet vacuum pump apparatus employing a pressure regulating valve as recited in claim 1 wherein said condenser comprises a housing, a tube sheet and a tube bundle, said tube sheet and tube bundle passing through the housing of the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311210251.8A CN117189697A (en) | 2023-09-19 | 2023-09-19 | Steam jet vacuum pump device using pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311210251.8A CN117189697A (en) | 2023-09-19 | 2023-09-19 | Steam jet vacuum pump device using pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117189697A true CN117189697A (en) | 2023-12-08 |
Family
ID=89001401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311210251.8A Pending CN117189697A (en) | 2023-09-19 | 2023-09-19 | Steam jet vacuum pump device using pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117189697A (en) |
-
2023
- 2023-09-19 CN CN202311210251.8A patent/CN117189697A/en active Pending
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