CN214199284U - Novel oil level control device and system for refrigerating system for nuclear power station - Google Patents
Novel oil level control device and system for refrigerating system for nuclear power station Download PDFInfo
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- CN214199284U CN214199284U CN202022787748.4U CN202022787748U CN214199284U CN 214199284 U CN214199284 U CN 214199284U CN 202022787748 U CN202022787748 U CN 202022787748U CN 214199284 U CN214199284 U CN 214199284U
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Abstract
The utility model discloses a refrigerating system's for nuclear power station novel oil level controlling means and system, the device includes: the lubricating oil circuit includes: the first pipeline, the check valve, the first sight glass, the oil storage type oil separator and the second pipeline which are arranged on the first pipeline, and the oil filter, the buffer oil groove and the oil supply electromagnetic valve which are sequentially arranged on the second pipeline, wherein the first end of the first pipeline is connected with the oil outlet of the compressor at the upstream of the first pipeline, the second end of the first pipeline is connected with the pipeline between the oil storage type oil separator and the oil filter, or the second end of the first pipeline is connected with the inlet of the oil storage type oil separator, or the second end of the first pipeline is connected with the pipeline between the oil filter and the buffer oil groove; the refrigerant circuit includes: the third pipeline, condenser, reservoir, expansion valve, evaporimeter that set gradually at the third pipeline. The utility model discloses a guarantee refrigerating system and maintain refrigerating system's continuous reliable operation when earthquake or other acutely rock, reduce compressor and refrigerating system's unnecessary outage.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power station refrigerating system, concretely relates to refrigerating system's for nuclear power station novel oil level control device and system.
Background
In the prior art, a refrigeration system adopting an open-type compressor and an external oil separator comprises a lubricating oil loop and a refrigerant loop, lubricating oil contained in the refrigerant loop and lubricating oil in the lubricating oil loop are converged in the oil separator and then flow back to the compressor, continuous circulation of the lubricating oil can ensure continuous and reliable operation of the compressor, the refrigeration system generally adopts the oil separator to take account of the oil storage function, oil is stored by utilizing the lower part of the oil separator, if the oil level control technology of the oil separator is improper, the lubricating oil in the oil separator cannot normally flow back to the compressor, and the compressor is stopped or even damaged.
In the aspect of oil level control of an oil separator, an oil heater, an oil temperature sensor and an oil level switch are arranged in the oil separator at present, wherein the oil level switch can realize oil level over-low protection, and due to the fact that the internal space of the oil separator is large, the oil level can fluctuate greatly in an earthquake, the oil level switch is prone to malfunction and shutdown of a compressor and a refrigeration system can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned not enough that exists among the prior art, provide a refrigerating system's for nuclear power station novel oil level controlling means and system, economical and easy is feasible, can effectively prevent compressor and refrigerating system's shut down under the earthquake condition to avoid the unusual shut down of nuclear power station.
Solve the utility model discloses technical scheme that technical problem adopted provides a refrigerating system's for nuclear power station novel oil level controlling means, and refrigerating system's compressor includes: compressor body, set up compressor oil-out, compressor gas vent, compressor oil feed mouth, compressor induction port on the compressor body, refrigerating system's novel oil level controlling means for nuclear power station includes:
a lube circuit comprising: the oil-saving type oil separator comprises a first pipeline, a one-way valve, a first liquid sight glass, an oil-storing type oil separator, a second pipeline, an oil filter, a buffer oil groove and an oil supply electromagnetic valve, wherein the one-way valve, the first liquid sight glass, the oil-storing type oil separator, the second pipeline, the oil filter, the buffer oil groove and the oil supply electromagnetic valve are sequentially arranged on the first pipeline along the direction from the first end to the second end of the first pipeline; the oil-storing oil separator includes: the oil-storing type oil separator comprises an oil-storing type oil separator body, a first oil-storing type oil separator outlet, a second oil-storing type oil separator outlet and an oil-storing type oil separator inlet, wherein the first oil-storing type oil separator outlet, the second oil-storing type oil separator outlet and the oil-storing type oil separator inlet are arranged on the oil-storing type oil separator body; the first end of the second pipeline is connected with an outlet of the first oil-storage oil separator at the upstream, the second end of the second pipeline is connected with an oil supply port of a compressor at the downstream, the first end of the first pipeline is connected with an oil outlet of the compressor at the upstream, and the second end of the first pipeline is connected with a pipeline between the oil-storage oil separator and the oil filter, or the second end of the first pipeline is connected with an inlet of the oil-storage oil separator, or the second end of the first pipeline is connected with a pipeline between the oil filter and the buffer oil tank;
a refrigerant circuit, comprising: the first end of the third pipeline is connected with the outlet of the second oil-storage type oil separator at the upstream of the third pipeline, the inlet of the oil-storage type oil separator is connected with the exhaust port of the compressor at the upstream of the oil-storage type oil separator, and the second end of the third pipeline is connected with the air suction port of the compressor at the downstream of the third pipeline.
The novel oil level control device of the refrigeration system for the nuclear power station is additionally provided with the buffer oil groove on the basis of the existing oil level control technology, and the refrigeration system caused by oil level fluctuation under the earthquake condition can be effectively prevented from being stopped.
Preferably, the oil storage volume of the buffer oil groove is 1/4-1/2 of the oil storage volume of the oil storage type oil separator. The oil storage volume of the buffer oil groove is 6-20L.
Preferably, the novel oil level control device of the refrigeration system for the nuclear power plant further comprises a second liquid level indicator arranged on the buffer oil tank.
Preferably, the novel oil level control device of the refrigeration system for the nuclear power station further comprises an oil level switch arranged on the buffer oil groove, the oil level switch is connected with a power supply of the nuclear power unit, and the oil level switch is used for controlling the nuclear power unit to stop when the low oil level of the buffer oil groove is monitored.
Preferably, the novel oil level control device for a refrigeration system for a nuclear power plant further includes: the exhaust solenoid valve, the buffer oil groove includes: the buffer oil groove comprises a buffer oil groove body, a buffer oil groove oil inlet, a buffer oil groove oil outlet and a buffer oil groove air exhaust port, wherein the buffer oil groove oil inlet is connected with an oil filter, the buffer oil groove oil outlet is connected with an oil supply electromagnetic valve, the exhaust electromagnetic valve is respectively connected with the buffer oil groove air exhaust port and a compressor air suction port through pipelines, and under the action of pressure difference of the buffer oil groove and the compressor, the exhaust electromagnetic valve is used for discharging redundant gaseous refrigerant in the buffer oil groove to the compressor.
Preferably, the novel oil level control device for a refrigeration system for a nuclear power plant further includes: one end of the pressure difference controller is connected with a pipeline between the oil storage type oil separator and the oil filter through a pipeline, the other end of the pressure difference controller is connected with a pipeline between the oil supply electromagnetic valve and an oil supply port of the compressor through a pipeline, and when the pressure difference monitored by the pressure difference controller is larger than a set value, the pressure difference controller is used for prompting a user to block the filter and replace the oil filter.
Preferably, the pressure difference controller is further connected with a power supply of the nuclear power unit, and when the pressure difference monitored by the pressure difference controller is a fixed value, the pressure difference controller is used for judging that the oil supply electromagnetic valve fails to be communicated and controlling the nuclear power unit to stop.
The utility model also provides a refrigerating system's novel oil level control system for nuclear power station, include: the novel oil level control device of the refrigerating system for the nuclear power station, the compressor connected with the novel oil level control device and the compressor motor connected with the compressor and used for driving the compressor.
The utility model provides a novel oil level control device and system of refrigerating system for nuclear power station, lubricating oil in the refrigerating system is discharged from the compressor oil outlet all the way, after the first oil storage type oil separator outlet of oil separator bottom converges, through the buffer oil groove, inserts the compressor oil feed mouth again; an oil heater and an oil temperature sensor are only arranged in the oil storage type oil separator, an oil level switch is not arranged, the oil level switch is arranged in the buffer oil tank, and when the oil level is lower than a set oil level value, the nuclear power unit is promoted to be protected and shut down, so that the compressor is prevented from being starved of oil; because the buffer oil groove has small oil storage volume and the exhaust electromagnetic valve is arranged, the buffer oil groove is in an oil filling state for a long time, when an earthquake or other severe vibration occurs, the refrigerating system is promoted to shake violently, the fluctuation range of the oil level in the buffer oil groove is not large, the accidental shutdown of the refrigerating system is not easy to be promoted, and the refrigerating system can still run normally under the earthquake condition.
In the nuclear power station is used, the utility model provides a refrigerating system for nuclear power station's novel oil level controlling means and system can guarantee that refrigerating system maintains refrigerating system's continuous reliable operation when earthquake or other acutely rock, reduce compressor and refrigerating system's unnecessary shutdown (refrigerating system's abnormal shutdown very probably causes the abnormal shutdown of nuclear power station, can influence the nuclear power station security even) to reduce the economic loss that the abnormal shutdown of nuclear power station brought, improved the security of nuclear power station.
Drawings
FIG. 1: the utility model discloses embodiment 2 provides a structure sketch map of a novel oil level control device of a refrigeration system for a nuclear power station;
FIG. 2: the utility model discloses the buffer oil groove structure sketch map that embodiment 2 provided;
FIG. 3: the utility model discloses embodiment 3 provides a structure sketch map of a novel oil level control device of a refrigeration system for a nuclear power station;
FIG. 4: the utility model discloses embodiment 4 provides a structure sketch map of a novel oil level control device of a refrigeration system for a nuclear power station;
in the figure: 1. the compressor comprises a compressor, 2, a compressor motor, 3, an oil storage type oil separator, 4, a buffer oil tank, 5, an oil filter, 6, an oil supply electromagnetic valve, 7, an exhaust electromagnetic valve, 8, a pressure difference controller, 9, a first liquid observation mirror, 10, a one-way valve, 11, a condenser, 12, an evaporator, 13, an expansion valve, 14, a liquid storage device, 15, a compressor oil outlet, 16, a compressor exhaust port, 17, a compressor oil supply port, 18, a compressor air suction port, 19, a first pipeline, 20, a second pipeline, 21, a first oil storage type oil separator outlet, 22, a second oil storage type oil separator outlet, 23.23a.23b, an oil storage type oil separator inlet, 24, a third pipeline, 25, a second liquid observation mirror, 26, an oil level switch, 27, a buffer oil inlet, 28, a buffer oil outlet, 29 and a buffer oil tank exhaust port.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
This embodiment provides a novel oil level controlling means of refrigerating system for nuclear power station, refrigerating system's compressor includes: compressor body, set up compressor oil-out, compressor gas vent, compressor oil feed mouth, compressor induction port on the compressor body, refrigerating system's novel oil level controlling means for nuclear power station includes:
a lube circuit comprising: the oil-saving type oil separator comprises a first pipeline, a one-way valve, a first liquid sight glass, an oil-storing type oil separator, a second pipeline, an oil filter, a buffer oil groove and an oil supply electromagnetic valve, wherein the one-way valve, the first liquid sight glass, the oil-storing type oil separator, the second pipeline, the oil filter, the buffer oil groove and the oil supply electromagnetic valve are sequentially arranged on the first pipeline along the direction from the first end to the second end of the first pipeline; the oil-storing oil separator includes: the oil-storing type oil separator comprises an oil-storing type oil separator body, a first oil-storing type oil separator outlet, a second oil-storing type oil separator outlet and an oil-storing type oil separator inlet, wherein the first oil-storing type oil separator outlet, the second oil-storing type oil separator outlet and the oil-storing type oil separator inlet are arranged on the oil-storing type oil separator body; the first end of the second pipeline is connected with an outlet of the first oil-storage oil separator at the upstream, the second end of the second pipeline is connected with an oil supply port of a compressor at the downstream, the first end of the first pipeline is connected with an oil outlet of the compressor at the upstream, and the second end of the first pipeline is connected with a pipeline between the oil-storage oil separator and the oil filter, or the second end of the first pipeline is connected with an inlet of the oil-storage oil separator, or the second end of the first pipeline is connected with a pipeline between the oil filter and the buffer oil tank;
a refrigerant circuit, comprising: the first end of the third pipeline is connected with the outlet of the second oil-storage type oil separator at the upstream of the third pipeline, the inlet of the oil-storage type oil separator is connected with the exhaust port of the compressor at the upstream of the oil-storage type oil separator, and the second end of the third pipeline is connected with the air suction port of the compressor at the downstream of the third pipeline.
In the application of the nuclear power station, the novel oil level control device and the novel oil level control system for the refrigeration system for the nuclear power station in the embodiment can ensure that the refrigeration system can maintain continuous and reliable operation when an earthquake or other violent shaking occurs, and unnecessary shutdown of the compressor and the refrigeration system is reduced (abnormal shutdown of the refrigeration system is likely to cause abnormal shutdown of the nuclear power station, and even the safety of the nuclear power station is affected), so that economic loss caused by abnormal shutdown of the nuclear power station is reduced, and the safety of the nuclear power station is improved.
Example 2
As shown in fig. 1 and 2, the present embodiment provides a novel oil level control device for a refrigeration system for a nuclear power station, in which a compressor 1 of the refrigeration system includes: compressor body, set up compressor oil-out 15, compressor gas vent 16, compressor oil feed mouth 17, compressor suction port 18 on the compressor body, nuclear power station is with refrigerating system's novel oil level controlling means includes:
a lube circuit comprising: a first pipe 19, a check valve 10, a first sight glass 9, an oil-storing oil separator 3, a second pipe 20, an oil filter 5, a buffer oil tank 4, and an oil supply solenoid valve 6, which are sequentially provided on the first pipe 19 in a direction from a first end to a second end of the first pipe 19, and a second pipe 20, and are sequentially provided on the second pipe 20 in a direction from the first end to the second end of the second pipe 20; the oil-storing oil separator 3 includes: an oil-storing oil separator body, a first oil-storing oil separator outlet 21, a second oil-storing oil separator outlet 22 and an oil-storing oil separator inlet 23 which are arranged on the oil-storing oil separator body; the first end of a second pipeline 20 is connected with the upstream outlet 21 of the first oil-storage oil separator, the second end of the second pipeline 20 is connected with the downstream compressor oil supply port 17, the first end of a first pipeline 19 is connected with the upstream compressor oil outlet 15, and the second end of the first pipeline 19 is connected with a pipeline between the oil-storage oil separator 3 and the oil filter 5;
a refrigerant circuit, comprising: a third pipe 24, a condenser 11, an accumulator 14, an expansion valve 13, and an evaporator 12 provided in this order on the third pipe 24 in a direction from a first end to a second end of the third pipe 24, the first end of the third pipe 24 being connected to the second oil-storing oil separator outlet 22 upstream thereof, the oil-storing oil separator inlet 23 being connected to the compressor discharge port 16 upstream thereof via a pipe, and the second end of the third pipe 24 being connected to the compressor suction port 18 downstream thereof.
Preferably, the oil storage volume of the buffer oil tank 4 is 1/4-1/2 of the oil storage volume of the oil-storage type oil separator 3. The oil storage volume of the buffer oil groove 4 is 6-20L. Specifically, the volume of the buffer oil groove 4 in this embodiment is smaller, and the volume of the buffer oil groove 4 is about 1/4 of the oil storage volume of the oil storage type oil separator 3, so that the buffer oil groove 4 is in an oil filled state for a long time, and the fluctuation range of the oil level in the buffer oil groove 4 is not large under the condition that the refrigeration system shakes violently when an earthquake occurs.
As shown in fig. 2, the novel oil level control device for a refrigeration system for a nuclear power plant preferably further includes a second fluid level indicator 25 disposed on the buffer oil tank 4.
Preferably, the novel oil level control device of the refrigeration system for the nuclear power station further comprises an oil level switch 26 arranged on the buffer oil tank 4, the oil level switch 26 is connected with a power supply of the nuclear power unit, and the oil level switch 26 is used for controlling the nuclear power unit to stop when the low oil level of the buffer oil tank 4 is monitored, so that the compressor 1 is prevented from being lack of oil.
Preferably, the novel oil level control device for a refrigeration system for a nuclear power plant further includes: the exhaust solenoid valve 7 and the buffer oil tank 4 include: the buffer oil groove body, set up buffer oil groove oil inlet 27 on the buffer oil groove body, buffer oil groove oil-out 28, buffer oil groove gas vent 29, buffer oil groove oil inlet 27 is connected with oil filter 5, buffer oil groove oil-out 28 is connected with fuel feeding solenoid valve 6, exhaust solenoid valve 7 is respectively through pipeline and buffer oil groove gas vent 29, compressor suction port 18 is connected, under the pressure differential effect of buffer oil groove 4 (high-pressure end) and compressor 1 (low-pressure end), exhaust solenoid valve 7 is arranged in discharging unnecessary gaseous state refrigerant in the buffer oil groove 4 to compressor 1, guarantee to be in the full oil state in the buffer oil groove 4 for a long time.
Preferably, the novel oil level control device for a refrigeration system for a nuclear power plant further includes: and one end of the pressure difference controller 8 is connected with a pipeline between the oil storage type oil separator 3 and the oil filter 5 through a pipeline, the other end of the pressure difference controller 8 is connected with a pipeline between the oil supply electromagnetic valve 6 and the oil supply port 17 of the compressor through a pipeline, and when the pressure difference monitored by the pressure difference controller 8 is greater than a set value, the pressure difference controller 8 is used for prompting a user to block the filter and replace the oil filter 5.
Preferably, the pressure difference controller 8 is further connected with a power supply of the nuclear power unit, and when the pressure difference monitored by the pressure difference controller 8 is a fixed value, the pressure difference controller 8 is used for judging that the oil supply electromagnetic valve 6 is not communicated in a fault and controlling the nuclear power unit to stop.
The arrangement position of the buffer oil groove 4 is positioned at the downstream of the oil storage type oil separator 3 and the upstream of the compressor oil supply port 17, after the oil discharged by the compressor 1 is converged with the oil discharged from the bottom of the oil storage type oil separator 3, the oil passes through the oil filter 5, the buffer oil groove 4 and the oil supply electromagnetic valve 6 and enters the compressor oil supply port 17 (low pressure port) under the pressure difference action of the high-pressure side oil storage type oil separator 3 and the low-pressure side compressor oil supply port 17, and a set of complete oil circuit circulation loop is formed. The oil-storing oil separator 3 in the oil circuit circulation circuit is provided with only an oil heater, an oil temperature sensor, and the like, and is not provided with an oil level switch. The oil supply electromagnetic valve 6 of the oil circuit circulation loop is arranged at the outlet of the buffer oil groove 4, when the nuclear power unit stops, the oil supply electromagnetic valve 6 is powered off, the oil supply pipeline is disconnected, and the situation that the oil in the buffer oil groove 4 is discharged into the compressor 1 under the action of high pressure and low pressure to cause low oil level alarm of the buffer oil groove 4 and the nuclear power unit cannot be started again is prevented.
This embodiment still provides a novel oil level control system of refrigerating system for nuclear power station, includes: the novel oil level control device of the refrigerating system for the nuclear power station, the compressor 1 connected with the novel oil level control device, and the compressor motor 2 connected with the compressor 1 and used for driving the compressor 1.
In the novel oil level control device and system for the refrigeration system for the nuclear power station, one path of lubricating oil in the refrigeration system is discharged from the oil outlet 15 of the compressor, and is converged with the outlet 21 of the first oil-storage type oil separator at the bottom of the oil-storage type oil separator 3, passes through the buffer oil tank 4, and is then connected to the oil supply port 17 of the compressor; only an oil heater and an oil temperature sensor are arranged in the oil storage type oil separator 3, an oil level switch is not arranged any more, an oil level switch 26 is arranged in the buffer oil tank 4, and when the oil level in the buffer oil tank 4 is lower than a set oil level value, the refrigeration system can be interlocked to protect the shutdown, so that the compressor 1 is prevented from being starved of oil; because the oil storage volume of the buffer oil groove 4 is small (specifically about 1/4 of the volume of the oil storage type oil separator 3) and the exhaust solenoid valve 7 is arranged, and the exhaust action of the exhaust solenoid valve 7 is added, the buffer oil groove 4 is in an oil filling state for a long time, when an earthquake or other violent vibration occurs, the refrigeration system is promoted to shake violently, the fluctuation range of the oil level in the buffer oil groove 4 is not large, the accidental shutdown of the refrigeration system is not easy to be promoted, and the refrigeration system can still run normally under the earthquake condition.
The novel oil level control device and system of the refrigeration system for the nuclear power station in the embodiment have the following functions:
1. the buffer oil groove 4 is added, the buffer oil groove 4 is arranged at the downstream of the oil storage type oil separator 3 and at the upstream of the oil supply port 17 of the compressor, and the path of a lubricating oil loop is not changed;
2. because the internal space of the oil-storage type oil separator 3 is large, the oil level fluctuation in the oil-storage type oil separator 3 is large under the earthquake condition, an oil level switch 26 is not arranged in the oil-storage type oil separator 3 any more, and the unnecessary stop of a refrigeration system is avoided; an oil level switch 26 is provided in the buffer oil sump 4, and the automatic interlocking refrigeration system protects the shutdown when the oil level in the buffer oil sump 4 is lower than a set value.
3. The buffer oil groove 4 is provided with a small volume (about 1/4 of the volume of the oil-storage type oil separator 3) and is positioned at the downstream of the oil-storage type oil separator 3, so that the buffer oil groove 4 is in an oil filling state for a long time, and the oil level cannot fluctuate greatly in the buffer oil groove 4 under the condition that a refrigerating system shakes violently when an earthquake occurs.
4. The surplus gaseous refrigerant above the buffer oil groove 4 can be discharged into the suction port of the compressor 1 through the exhaust electromagnetic valve 7, and the buffer oil groove 4 is ensured to be filled with oil.
5. When the oil filter 5 is dirty and blocked, the user is prompted to replace the oil filter when the front and back pressure difference of the pressure difference controller 8 is larger than a set value; when the oil supply electromagnetic valve 6 fails and is blocked, the differential pressure controller 8 controls the nuclear power unit to stop, so that the compressor 1 is prevented from being lack of oil.
Therefore, even if an earthquake or other strong vibration occurs after the nuclear power station is operated, the refrigeration system cannot be stopped due to the increase of the buffer oil groove 4 and the small volume characteristic of the buffer oil groove. The safe and efficient operation of the nuclear power plant is ensured through the preventive improvement measures.
Meanwhile, the oil storage type refrigeration system is also suitable for similar refrigeration systems with continuous operation requirements in other fields under earthquake or strong vibration environments.
In the application of the nuclear power station, the novel oil level control device and the novel oil level control system for the refrigeration system for the nuclear power station in the embodiment can ensure that the refrigeration system can maintain continuous and reliable operation when an earthquake or other violent shaking occurs, and unnecessary shutdown of the compressor 1 and the refrigeration system is reduced (abnormal shutdown of the refrigeration system is likely to cause abnormal shutdown of the nuclear power station, and even the safety of the nuclear power station is affected), so that economic loss caused by abnormal shutdown of the nuclear power station is reduced, and the safety of the nuclear power station is improved.
Example 3
As shown in fig. 3, the present embodiment provides a novel oil level control device for a refrigeration system for a nuclear power plant, which is different from embodiment 2 in that:
the second end of the first pipe 19 is connected to the oil-storing oil separator inlet 23a, and the oil-storing oil separator inlet 23b is connected to the compressor discharge port 16. The oil-storing oil separator inlet 23a is provided at the bottom of the oil-storing oil separator body, and the oil-storing oil separator inlet 23b is provided at the upper part of the oil separator body.
This embodiment still provides a novel oil level control system of refrigerating system for nuclear power station, includes: the novel oil level control device of the refrigerating system for the nuclear power station, the compressor 1 connected with the novel oil level control device, and the compressor motor 2 connected with the compressor 1 and used for driving the compressor 1.
Example 4
As shown in fig. 4, the present embodiment provides a novel oil level control device for a refrigeration system for a nuclear power plant, which is different from embodiment 2 in that:
a second end of the first conduit 19 is connected to a conduit between the oil filter 5 and the buffer reservoir 4.
This embodiment still provides a novel oil level control system of refrigerating system for nuclear power station, includes: the novel oil level control device of the refrigerating system for the nuclear power station, the compressor 1 connected with the novel oil level control device, and the compressor motor 2 connected with the compressor 1 and used for driving the compressor 1.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A novel oil level control device of a refrigeration system for a nuclear power station, a compressor of the refrigeration system comprising: compressor body, set up compressor oil-out, compressor gas vent, compressor oil feed mouth, compressor induction port on the compressor body, its characterized in that, refrigerating system's for nuclear power station novel oil level controlling means includes:
a lube circuit comprising: the oil-saving type oil separator comprises a first pipeline, a one-way valve, a first liquid sight glass, an oil-storing type oil separator, a second pipeline, an oil filter, a buffer oil groove and an oil supply electromagnetic valve, wherein the one-way valve, the first liquid sight glass, the oil-storing type oil separator, the second pipeline, the oil filter, the buffer oil groove and the oil supply electromagnetic valve are sequentially arranged on the first pipeline along the direction from the first end to the second end of the first pipeline; the oil-storing oil separator includes: the oil-storing type oil separator comprises an oil-storing type oil separator body, a first oil-storing type oil separator outlet, a second oil-storing type oil separator outlet and an oil-storing type oil separator inlet, wherein the first oil-storing type oil separator outlet, the second oil-storing type oil separator outlet and the oil-storing type oil separator inlet are arranged on the oil-storing type oil separator body; the first end of the second pipeline is connected with an outlet of the first oil-storage oil separator at the upstream, the second end of the second pipeline is connected with an oil supply port of a compressor at the downstream, the first end of the first pipeline is connected with an oil outlet of the compressor at the upstream, and the second end of the first pipeline is connected with a pipeline between the oil-storage oil separator and the oil filter, or the second end of the first pipeline is connected with an inlet of the oil-storage oil separator, or the second end of the first pipeline is connected with a pipeline between the oil filter and the buffer oil tank;
a refrigerant circuit, comprising: the first end of the third pipeline is connected with the outlet of the second oil-storage type oil separator at the upstream of the third pipeline, the inlet of the oil-storage type oil separator is connected with the exhaust port of the compressor at the upstream of the oil-storage type oil separator, and the second end of the third pipeline is connected with the air suction port of the compressor at the downstream of the third pipeline.
2. The novel oil level control device for a refrigeration system for a nuclear power plant as claimed in claim 1, wherein the oil storage volume of the buffer oil tank is 1/4 to 1/2 of the oil storage volume of the oil-storage-type oil separator.
3. The novel oil level control device for a refrigeration system for a nuclear power plant as recited in claim 1, further comprising a second sight glass disposed on the buffer oil sump.
4. The novel oil level control device for the refrigeration system of the nuclear power station as recited in claim 1, further comprising an oil level switch disposed on the buffer oil tank, wherein the oil level switch is connected to a power supply of the nuclear power unit, and the oil level switch is configured to control the nuclear power unit to stop when a low oil level of the buffer oil tank is monitored.
5. The novel oil level control device for a refrigeration system for a nuclear power plant as recited in any one of claims 1 to 4, further comprising: the exhaust solenoid valve, the buffer oil groove includes: the buffer oil groove comprises a buffer oil groove body, a buffer oil groove oil inlet, a buffer oil groove oil outlet and a buffer oil groove air exhaust port, wherein the buffer oil groove oil inlet is connected with an oil filter, the buffer oil groove oil outlet is connected with an oil supply electromagnetic valve, the exhaust electromagnetic valve is respectively connected with the buffer oil groove air exhaust port and a compressor air suction port through pipelines, and under the action of pressure difference of the buffer oil groove and the compressor, the exhaust electromagnetic valve is used for discharging redundant gaseous refrigerant in the buffer oil groove to the compressor.
6. The novel oil level control device for a refrigeration system for a nuclear power plant as recited in any one of claims 1 to 4, further comprising: one end of the pressure difference controller is connected with a pipeline between the oil storage type oil separator and the oil filter through a pipeline, the other end of the pressure difference controller is connected with a pipeline between the oil supply electromagnetic valve and an oil supply port of the compressor through a pipeline, and when the pressure difference monitored by the pressure difference controller is larger than a set value, the pressure difference controller is used for prompting a user to block the filter and replace the oil filter.
7. The novel oil level control device of the refrigeration system for the nuclear power station as claimed in claim 6, wherein the pressure difference controller is further connected with a power supply of the nuclear power unit, and when the pressure difference monitored by the pressure difference controller is a fixed value, the pressure difference controller is used for judging that the oil supply electromagnetic valve fails and is not communicated, and controlling the nuclear power unit to stop.
8. A novel oil level control system of a refrigeration system for a nuclear power station, comprising: the novel oil level control device for a nuclear power plant refrigeration system as claimed in any one of claims 1 to 7, a compressor connected to the novel oil level control device, and a compressor motor connected to the compressor for driving the compressor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022787748.4U CN214199284U (en) | 2020-11-26 | 2020-11-26 | Novel oil level control device and system for refrigerating system for nuclear power station |
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| CN202022787748.4U CN214199284U (en) | 2020-11-26 | 2020-11-26 | Novel oil level control device and system for refrigerating system for nuclear power station |
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| CN202022787748.4U Active CN214199284U (en) | 2020-11-26 | 2020-11-26 | Novel oil level control device and system for refrigerating system for nuclear power station |
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