CN114263612B - Pump jump preventing device and method for vacuum pump - Google Patents
Pump jump preventing device and method for vacuum pump Download PDFInfo
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- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000004044 response Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000009191 jumping Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
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Abstract
The disclosure provides a vacuum pump anti-jump pump device and a method, wherein the device comprises: the pressure detection equipment is arranged on a pipeline between the equipment to be vacuumized and the air inlet of the vacuum pump and is configured to detect an air pressure signal of the pipeline; the gas flow regulating valve is arranged on the pipeline and is configured to regulate the gas flow of the equipment to be vacuumized to the vacuum pump; the valve position detector is arranged in the gas flow regulating valve and is used for detecting a position signal of a valve clack in the gas flow regulating valve; and the processor is connected with the pressure detection equipment and the valve position detector, is configured to send an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the gas pressure signal and the position signal, can effectively solve the common technical problem of pump jump caused by overlarge load when the pump is started, has simple structure and obvious effect, is relatively low in cost, is easy to realize and has wide application value.
Description
Technical Field
The disclosure relates to the technical field of nuclear power plant equipment, in particular to a vacuum pump anti-jump pump device and method.
Background
Liquid ring vacuum pumps are widely used in nuclear power plants, such as condenser evacuation for related stacks (including high temperature gas cooled stacks), vacuum in the coolant storage and handling systems of the Hualong 1 and CPR1000 nuclear power plants, vacuum in the radioactive liquid waste systems of the AP1000 nuclear power plants, and the like.
The stable and reliable operation of the liquid ring vacuum pump is affected by the pump and the motor, and the inlet pressure, outlet pressure, water level and other environmental parameters of the liquid ring vacuum pump affect the reliability. The data show that common faults of the liquid ring vacuum pump include reduced vacuum degree, overlarge vibration, pump jumping and the like. The pump jump event frequency is high, and the main reasons are overload, motor failure and the like. When the problem of pump jump is solved in the related art, a branch is generally added at the exhaust port of the equipment to be exhausted, the extracted gas is exhausted to the atmosphere from the branch and is not treated so as to reduce the operation load of the pump, but the more serious problem is that radioactive gas is exhausted to the environment, the risk of unnecessary irradiation received by power plant personnel and surrounding residents is increased, and manual intervention is also required. Therefore, there is a lack of effective measures to prevent pump jump in the prior art.
Disclosure of Invention
The application provides a vacuum pump anti-jump method, a device and a storage medium, which aim to solve one of the technical problems in the related technology at least to a certain extent.
An embodiment of a first aspect of the present application provides a pump anti-skip device of a vacuum pump, including: the pressure detection equipment is arranged on a pipeline between the equipment to be vacuumized and the air inlet of the vacuum pump and is configured to detect an air pressure signal of the pipeline; the gas flow regulating valve is arranged on the pipeline and is configured to regulate the gas flow of the equipment to be vacuumized to the vacuum pump; the valve position detector is arranged in the gas flow regulating valve and is used for detecting a position signal of a valve clack in the gas flow regulating valve; and the processor is connected with the pressure detection equipment and the valve position detector and is configured to send an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the air pressure signal and the position signal.
In some embodiments, the pressure sensing device is disposed in a conduit between the gas flow regulating valve and the vacuum pump inlet.
In some embodiments, sending instructions for controlling the opening of the valve flap to the gas flow regulator valve based on the gas pressure signal and the position signal comprises: comparing a pressure value corresponding to the air pressure signal with a preset setting value; and sending an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the comparison result and the position signal.
In some embodiments, sending an instruction for controlling the opening of the valve flap to the gas flow regulating valve according to the comparison result in combination with the position signal comprises: and sending a first instruction for controlling the opening degree of the enlarged valve clack under the condition that the pressure value is smaller than the setting value and the position signal indicates that the valve clack is in the middle position or the closing position.
In some embodiments, sending an instruction for controlling the opening of the valve flap to the gas flow regulating valve according to the comparison result in combination with the position signal comprises: and sending a second instruction for controlling to reduce the opening degree of the valve clack under the condition that the pressure value is larger than the setting value and the position signal indicates that the valve clack is in the middle position or the full-opening position.
In some embodiments, the processor is further configured to: and sending a driving stopping instruction when the difference value between the pressure value and the setting value is in a preset range.
In some embodiments, the processor is further configured to switch the adjustment of the gas flow regulating valve to a manual mode or an automatic mode in response to a user-triggered operation.
In some embodiments, the pressure detection device comprises a first pressure detection device and a second pressure detection device.
In some embodiments, the valve position detectors include a first valve position detector and a second valve position detector.
An embodiment of a second aspect of the present application provides a pump jump preventing method for a vacuum pump, including: acquiring an air pressure signal of a pipeline between equipment to be vacuumized and an air inlet of a vacuum pump; detecting a position signal of a valve clack in a gas flow regulating valve arranged in a pipeline; and sending an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the gas pressure signal and the position signal.
An embodiment of a third aspect of the present application provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the vacuum pump anti-skip pump method in the embodiment of the application.
In a fourth aspect, embodiments of the present application provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute a vacuum pump anti-skip method disclosed in the embodiments of the present application.
In this embodiment, a pressure detection device is used to detect an air pressure signal between the device to be vacuumized and an air inlet of the vacuum pump, a valve position detector arranged inside the air flow regulating valve is used to detect a position signal of a valve clack in the air flow regulating valve, and a processor sends an instruction for controlling the opening of the valve clack to the air flow regulating valve according to the air pressure signal and the position signal, and the air flow regulating valve regulates the air flow of the device to be vacuumized to the vacuum pump according to the instruction. Therefore, through adjusting the air inlet pressure, the load of the vacuum pump during starting can be reduced, the technical problem of pump jumping commonality caused by overlarge load during starting is effectively solved, and the scheme has the advantages of simple structure, obvious effect, low cost, easy realization and wide application value.
Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a vacuum pump anti-skip pump system provided in accordance with an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of anti-skip pump processing logic provided in accordance with an embodiment of the present disclosure;
fig. 3 is a flow chart of a method for preventing pump jump of a vacuum pump according to another embodiment of the present disclosure.
Detailed Description
Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present disclosure and are not to be construed as limiting the present disclosure. On the contrary, the embodiments of the disclosure include all alternatives, modifications, and equivalents as may be included within the spirit and scope of the appended claims.
Aiming at the technical problem that the vacuum pump in the background art can generate pump jump under the condition of overlarge load, the technical scheme of the embodiment provides a pump jump preventing device of the vacuum pump, and the method is described below with reference to specific embodiments.
Fig. 1 is a schematic structural diagram of a vacuum pump anti-skip pump system according to an embodiment of the present disclosure, and as shown in fig. 1, a vacuum pump anti-skip pump apparatus according to an embodiment of the present disclosure may include a pressure detection device 60, a gas flow rate adjustment valve 30, a valve position detector 40, and a processor 50.
Wherein the pressure detecting device 60, a pipe 70 provided between the device to be evacuated 10 and the air inlet of the vacuum pump 20, is configured to detect an air pressure signal of the pipe 70.
For example, the device to be vacuumized 10 may be a device in a nuclear power plant that needs vacuumized, for example: a condenser, a radioactive liquid waste system, etc., and the vacuum pump 20 may be, for example, a liquid ring vacuum pump or any other type of vacuum pump, without limitation. In practical application, the device to be vacuumized 10 and the vacuum pump 20 are connected through a pipeline 70, the vacuum pump 20 can vacuumize the device to be vacuumized 10, and the pressure detection device 60 can be arranged at the pipeline 70, and the pressure detection device 60 detects the air pressure signal of the pipeline 70, that is, the air pressure of the air inlet of the vacuum pump 20. Preferably, the line 70 is as short as possible to increase the response speed, which is advantageous for rapid pressure regulation.
In some embodiments, as shown in fig. 1, the pressure detection device 60 of an embodiment of the present disclosure may include, for example, a pressure sensor 601 and a pressure transmitter 602, the pressure sensor 601 may measure a pressure signal of a gas of a pipeline, and the pressure transmitter 602 may convert the pressure signal into an electrical signal.
In other embodiments, pressure sensing device 60 may include a first pressure sensing device and a second pressure sensing device, i.e., two or more sets of pressure sensors 601 and pressure transmitters 602 are configured to sense pressure signals and select a valid pressure signal therefrom.
The gas flow regulating valve 30 is disposed at the pipeline 70, an inlet of the gas flow regulating valve 30 is connected to an outlet of the vacuum pump 20, and an outlet of the gas flow regulating valve 30 is connected to an air inlet of the vacuum pump 20, and the opening of the valve clack is controlled to regulate the gas flow rate of the vacuum pump 20 conveyed by the vacuum pump 10, so as to regulate the load of the vacuum pump 20. The gas flow rate control valve 30 may be any type of control valve, and is not limited thereto.
In some embodiments, the pressure detecting device 60 is disposed in a pipeline between the gas flow rate adjusting valve 30 and the air inlet of the vacuum pump 20, that is, the gas flow in the vacuum apparatus 10 to be pumped sequentially passes through the gas flow rate adjusting valve 30 and the pressure detecting device 60 to reach the air inlet of the vacuum pump 20, and the pressure detecting device 60 is preferably disposed near the air inlet of the vacuum pump 20. Therefore, the pressure detection device 60 can accurately measure the pressure from the outlet of the gas flow rate regulating valve 30 to the inlet of the vacuum pump 20, so that the measured pressure signal can be more accurate, and the gas flow rate regulating valve 30 can be accurately controlled later.
The valve position detector 40 is disposed inside the gas flow rate adjusting valve 30, and is configured to detect a position signal of a valve clack in the gas flow rate adjusting valve 30, namely: the opening of the valve flap is detected and a position signal is fed back to the processor 50.
In some embodiments, the valve position detector 40 includes a first valve position detector and a second valve position detector, the valid position signal of which may be selected.
The processor 50 may be, for example, a logic calculator, which is connected to the valve position detector 40 and the pressure detection device 60 (in particular, the pressure transmitter 602), for example: the connection may be by cable, or may be by wireless, without limitation.
In practical applications, the logic calculator may receive the air pressure signal and the position signal detected by the valve position detector 40 and the pressure transmitter 602, perform logic operation according to the air pressure signal and the position signal, generate an instruction for controlling the opening of the valve clack, and further send the instruction to the air flow regulating valve 30, that is, the instruction may drive the air flow regulating valve 30. The gas flow regulating valve 30 can control the opening degree of the valve clack according to the instruction, thereby realizing the control of the load of the vacuum pump 20.
In some embodiments, the setting value of the pressure may be preset, and in the operation of sending the instruction for controlling the opening of the valve clack to the gas flow rate adjustment valve according to the gas pressure signal and the position signal, the logic calculator first compares the pressure value corresponding to the gas pressure signal with the preset setting value, and further sends the instruction for controlling the opening of the valve clack to the gas flow rate adjustment valve 30 according to the comparison result in combination with the position signal. The setting value may be set according to an actual application scenario, which is not limited.
In this embodiment, a pressure detection device is used to detect an air pressure signal between the device to be vacuumized and an air inlet of the vacuum pump, a valve position detector arranged inside the air flow regulating valve is used to detect a position signal of a valve clack in the air flow regulating valve, and a processor sends an instruction for controlling the opening of the valve clack to the air flow regulating valve according to the air pressure signal and the position signal, and the air flow regulating valve regulates the air flow of the device to be vacuumized to the vacuum pump according to the instruction. Therefore, through adjusting the air inlet pressure, the load of the vacuum pump during starting can be reduced, the technical problem of pump jumping commonality caused by overlarge load during starting is effectively solved, and the scheme has the advantages of simple structure, obvious effect, low cost and easy realization, and therefore, the method has wide application value.
In some embodiments, fig. 2 is a schematic diagram of anti-skip pump processing logic provided according to an embodiment of the present disclosure, as shown in fig. 2, the logic calculator sends a first instruction for controlling to enlarge the opening degree of the valve flap if it is determined that the pressure value is less than the setting value and the position signal indicates that the valve flap is in the intermediate position or the closed position.
Specifically, in practical application, as the gas is continuously pumped out, the gas in the vacuum apparatus 10 to be pumped out is less and the gas pressure is lower, and the pressure value received by the logic calculator is smaller than the setting value, namely: the load of the liquid ring vacuum pump 20 is too low and can be increased to reach the desired vacuum level as soon as possible. And the logic calculator can judge that the valve clack is in the middle position or the closing position through the position signal. In this case, the logic calculator may generate and send a first command (which may be, for example, a "low" signal) to the gas flow regulating valve 30, the first command being for controlling the expansion of the valve flap opening, so that the gas flow regulating valve 30 may expand the valve flap opening in response to the first command. And when the valve position is at the maximum opening position, the valve clack is forbidden to be driven to move.
In other embodiments, as shown in fig. 2, the logic calculator sends a second instruction for controlling the valve flap opening to decrease if the pressure value is determined to be greater than the setting value and the position signal indicates that the valve flap is in the intermediate position or the fully open position.
For example, when the liquid ring vacuum pump 20 is just started, generally, more gas is in the vacuum apparatus 10 to be evacuated, and the air pressure is larger, namely: since the pressure value is larger than the setting value, the load of the liquid ring vacuum pump 20 is large, and the load needs to be reduced. And the logic calculator judges that the valve clack is in the middle position or the full open position through the position signal. In this case, the logic calculator may generate and send a second instruction (which may be, for example, a "high" signal) for controlling the reduction of the flap opening to the gas flow rate adjustment valve 30, so that the gas flow rate adjustment valve 30 may reduce the flap opening in response to the second instruction.
In some embodiments, the logic calculator may compare the real-time pressure value with the setting value during the expansion or reduction of the valve flap, and send a stop driving instruction to control the valve flap to stop moving when the difference between the pressure value and the setting value is within a preset range.
Thus, the embodiments of the present disclosure may control the gas flow regulating valve 30 in real time in combination with the position of the valve flap and the pressure value, so that the vacuum pump is in a suitable load range, and pump jump is avoided.
In some embodiments, the gas flow regulating valve 30 may be configured with both manual and automatic control modes, and the processor 50 may switch the gas flow regulating valve to either the manual mode or the automatic mode in response to a user-activated operation (e.g., activating a manual-automatic switch button or gear, etc.).
Specifically, when it is necessary to manually close the opening of the flap of the gas flow rate adjustment valve 30, the control mode is set to "manual" blocking, the "stop" button is manually pressed, and when the flap of the adjustment valve 10 is in the intermediate opening position or the maximum opening position, the logic calculator will input a command for decreasing the flap opening to the gas flow rate adjustment valve 30, and the flap opening is closed down until the manual "stop" signal disappears or the flap is in the minimum opening position.
When the opening of the valve clack of the gas flow regulating valve 30 needs to be manually increased, the control mode is set at a manual gear, the start button is manually pressed, and when the valve position is at the middle opening position or the minimum opening position, the logic calculator inputs a command of increasing the opening of the valve clack to the gas flow regulating valve 30, and the opening of the valve clack is increased until the manual start signal disappears or the valve clack is at the maximum opening position. Therefore, the embodiment can also control the gas flow regulating valve manually, and can meet the requirements of different scenes.
Fig. 3 is a schematic flow chart of a method for preventing pump jump of a vacuum pump according to another embodiment of the disclosure, as shown in fig. 3, including:
s301: and acquiring an air pressure signal of a pipeline between the equipment to be vacuumized and an air inlet of the vacuum pump.
S302: a position signal of a valve flap in a gas flow regulating valve disposed in a pipeline is detected.
S303: and sending an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the gas pressure signal and the position signal.
In this embodiment, through obtaining the atmospheric pressure signal of waiting to take out the vacuum equipment and the pipeline between vacuum pump air inlet, and the position signal of valve clack in the gas flow control valve of detecting setting up in the pipeline, and according to atmospheric pressure signal and position signal, send the instruction that is used for controlling valve clack aperture to the gas flow control valve, can lead to reducing the load when the vacuum pump starts, effectively solved and because the load is too big causes the commonality technical problem of jumping the pump when starting, and this scheme simple structure, the effect is obvious, and become comparatively low easily realization, have wide application value.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
It should be noted that in the description of the present application, 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 application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
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 application. 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.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (6)
1. A vacuum pump anti-skip device, comprising:
the pressure detection device is arranged on a pipeline between the equipment to be vacuumized and the air inlet of the vacuum pump and is configured to detect an air pressure signal of the pipeline;
the gas flow regulating valve is arranged on the pipeline and is configured to regulate the gas flow of the equipment to be vacuumized to the vacuum pump;
the valve position detector is arranged in the gas flow regulating valve and is used for detecting a position signal of a valve clack in the gas flow regulating valve; and
the processor is connected with the pressure detection equipment and the valve position detector and is configured to send an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the air pressure signal and the position signal;
the pressure detection equipment is arranged on a pipeline between the gas flow regulating valve and the vacuum pump air inlet;
according to the air pressure signal and the position signal, sending an instruction for controlling the opening degree of the valve clack to the air flow regulating valve, comprising:
comparing the pressure value corresponding to the air pressure signal with a preset setting value; and
transmitting an instruction for controlling the opening of the valve clack to the gas flow regulating valve according to the comparison result and the position signal;
and sending an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the comparison result and the position signal, wherein the instruction comprises the following steps:
transmitting a first instruction for controlling the opening degree of the enlarged valve flap in the case that the pressure value is smaller than the setting value and the position signal indicates that the valve flap is in the intermediate position or the closed position;
and sending an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the comparison result and the position signal, wherein the instruction comprises the following steps:
and sending a second instruction for controlling to reduce the opening degree of the valve clack under the condition that the pressure value is larger than the setting value and the position signal indicates that the valve clack is in the middle position or the full-opening position.
2. The apparatus of claim 1, wherein the processor is further configured to:
and sending a driving stopping instruction when the difference value between the pressure value and the setting value is in a preset range.
3. The apparatus of claim 1, wherein the processor is further configured to switch the manner of adjustment of the gas flow regulator valve to a manual mode or an automatic mode in response to a user-activated operation.
4. The apparatus of claim 1, wherein the pressure detection device comprises a first pressure detection device and a second pressure detection device.
5. An apparatus as defined in claim 1, wherein the valve position detectors comprise a first valve position detector and a second valve position detector.
6. A vacuum pump anti-skip method using the vacuum pump anti-skip device according to any of claims 1-5, characterized by comprising:
acquiring an air pressure signal of a pipeline between equipment to be vacuumized and an air inlet of a vacuum pump;
detecting a position signal of a valve clack in a gas flow regulating valve arranged on the pipeline; and
and sending an instruction for controlling the opening degree of the valve clack to the gas flow regulating valve according to the gas pressure signal and the position signal.
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| CN202111372325.9A CN114263612B (en) | 2021-11-18 | 2021-11-18 | Pump jump preventing device and method for vacuum pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111372325.9A CN114263612B (en) | 2021-11-18 | 2021-11-18 | Pump jump preventing device and method for vacuum pump |
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| CN114263612A CN114263612A (en) | 2022-04-01 |
| CN114263612B true CN114263612B (en) | 2024-02-06 |
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| JPH10141013A (en) * | 1996-11-14 | 1998-05-26 | Mitsubishi Heavy Ind Ltd | Extra steam collecting device |
| CN103398009A (en) * | 2013-07-16 | 2013-11-20 | 深圳寿力亚洲实业有限公司 | Vacuum pump and air pumping adjustment system thereof |
| CN106014999A (en) * | 2016-06-09 | 2016-10-12 | 中国石油大学(华东) | Efficient running control method for water ring vacuum pump unit and control system |
| CN107559200A (en) * | 2017-11-01 | 2018-01-09 | 广东肯富来泵业股份有限公司 | Balanced type Roots vacuum pumping system and its control method |
| CN209856030U (en) * | 2019-04-26 | 2019-12-27 | 中山凯旋真空科技股份有限公司 | Vacuum drying equipment, vacuumizing device and control device thereof |
| CN112343789A (en) * | 2020-10-14 | 2021-02-09 | 中广核工程有限公司 | Spent fuel storage tank vacuumizing method and system |
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2021
- 2021-11-18 CN CN202111372325.9A patent/CN114263612B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10141013A (en) * | 1996-11-14 | 1998-05-26 | Mitsubishi Heavy Ind Ltd | Extra steam collecting device |
| CN103398009A (en) * | 2013-07-16 | 2013-11-20 | 深圳寿力亚洲实业有限公司 | Vacuum pump and air pumping adjustment system thereof |
| CN106014999A (en) * | 2016-06-09 | 2016-10-12 | 中国石油大学(华东) | Efficient running control method for water ring vacuum pump unit and control system |
| CN107559200A (en) * | 2017-11-01 | 2018-01-09 | 广东肯富来泵业股份有限公司 | Balanced type Roots vacuum pumping system and its control method |
| CN209856030U (en) * | 2019-04-26 | 2019-12-27 | 中山凯旋真空科技股份有限公司 | Vacuum drying equipment, vacuumizing device and control device thereof |
| CN112343789A (en) * | 2020-10-14 | 2021-02-09 | 中广核工程有限公司 | Spent fuel storage tank vacuumizing method and system |
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| CN114263612A (en) | 2022-04-01 |
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