CN114308419B - Double-loop single-loop operation system and method for centrifugal machine cooling system - Google Patents
Double-loop single-loop operation system and method for centrifugal machine cooling system Download PDFInfo
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- CN114308419B CN114308419B CN202011074102.XA CN202011074102A CN114308419B CN 114308419 B CN114308419 B CN 114308419B CN 202011074102 A CN202011074102 A CN 202011074102A CN 114308419 B CN114308419 B CN 114308419B
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- cooling water
- centrifugal machine
- cooling
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 title claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 239000000498 cooling water Substances 0.000 claims abstract description 80
- 230000009351 contact transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Abstract
The non-contact transmission method of the local exhaust fan for nuclear feeding and taking comprises a centrifugal machine, and comprises the following steps of: s1: opening a cooling water backwater communication valve, closing a cooling water inlet valve, opening a bypass valve of the chilled water circulating pump, stopping the running of the chilled water circulating pump, closing the chilled water inlet valve, and enabling the cooling water backwater of the centrifugal machine to flow from the centrifugal machine to the evaporator of the refrigerating machine; s2: and opening a cooling water supply communication valve, closing a chilled water outlet valve and a cooling water outlet valve, and enabling the cooling water supply of the centrifugal machine to flow to the centrifugal machine from the evaporator of the refrigerating machine. S3: and adjusting the outlet water temperature of the evaporator of the refrigerator.
Description
Technical Field
The invention belongs to the technical field of uranium enrichment production cooling, and particularly relates to a pipeline connection and an operation method for changing two loop operation into one loop operation of a centrifugal machine cooling system.
Background
The existing centrifugal machine cooling system is a double-loop system and consists of an inner loop and an outer loop, wherein the inner loop is a cooling water circulation loop, the outer loop is a chilled water circulation loop, and chilled water exchanges heat with cooling water through a heat exchanger to indirectly take away heat generated during the operation of the centrifugal machine. Because the heat transfer is indirectly carried out through the heat exchanger, the cooling loss is large, the load rate of the refrigeration equipment is high, and the power consumption is high. In order to save energy and reduce consumption, the double loops of the cooling system of the centrifugal machine are changed into single loops, one heat exchange link is reduced, and the cooling water is directly provided for the centrifugal machine by the refrigerator.
When the double loops are changed into single loops, the cooling system of the conventional centrifugal machine is changed into single-tube operation to ensure continuous supply of cooling water, and the water supply valve and the water return valve of each section of the centrifugal machine are required to be operated and then welded and connected. The operation process is complex, the number of the valves is large, the tightness of the valves is uncertain, the quality of cooling water is polluted by welding slag, the safe and stable operation of the centrifugal machine is directly affected, and the risk is high. Therefore, the invention provides a pipeline connecting method which can realize direct supply of the cooling water of the centrifugal machine without operating a valve of the cooling water section of the centrifugal machine and welding operation of an inner loop pipeline.
Disclosure of Invention
The invention aims to provide a circuit connection method for changing double-circuit operation into single-circuit operation under the condition that a centrifugal machine cooling system runs uninterruptedly, and the connection is simple and reliable.
The technical scheme of the invention is as follows: the double-loop single-loop operation system for the centrifugal machine cooling system comprises a centrifugal machine, wherein the centrifugal machine is connected with a circulating water pump, the circulating water pump is connected with a water pump outlet pipeline port and a cooling water inlet valve, the cooling water inlet valve is connected with a heat exchanger, the water pump outlet pipeline port is connected with a cooling water return water communication valve, the cooling water return water communication valve is respectively connected with a chilled water circulating water pump and a chilled water circulating water pump bypass valve, and the chilled water circulating water pump bypass valve are both connected with a refrigerator evaporator;
the centrifugal machine is also connected with a cooling water outlet valve and a cooling water drain port, the cooling water outlet valve is connected with the heat exchanger, the cooling water drain port is connected with a cooling water supply communication valve, the cooling water supply communication valve is connected with a chilled water drain port, and the chilled water drain port is respectively connected with a chilled water outlet valve 8 and a refrigerator evaporator;
the heat exchanger is connected with a chilled water inlet valve and a chilled water outlet valve, the chilled water inlet valve is connected with a chilled water circulating pump, a chilled water circulating pump bypass valve and a cooling water return water communication valve, and the chilled water outlet valve is connected with a refrigerator evaporator.
A non-contact transmission method of a local exhaust fan for nuclear feeding and taking materials comprises the following steps:
s1: opening a cooling water backwater communication valve, closing a cooling water inlet valve, opening a bypass valve of the chilled water circulating pump, stopping the running of the chilled water circulating pump, closing the chilled water inlet valve, and enabling the cooling water backwater of the centrifugal machine to flow from the centrifugal machine to the evaporator of the refrigerating machine;
s2: and opening a cooling water supply communication valve, closing a chilled water outlet valve and a cooling water outlet valve, and enabling the cooling water supply of the centrifugal machine to flow to the centrifugal machine from the evaporator of the refrigerating machine.
S3: and adjusting the outlet water temperature of the evaporator of the refrigerator.
In the step S3, the outlet water temperature of the evaporator of the refrigerator is adjusted according to the requirement of the process on the temperature of the cooling water of the centrifugal machine.
The invention has the remarkable effects that:
(1) The centrifugal machine cooling system can be changed from double-loop operation to single-loop operation without operating the section valves of the centrifugal machine closely related to safe and stable operation of the centrifugal machine, and the number of the operated valves is small, so that the connection is simple and reliable.
(2) During the pipe and valve connection process, the continuity and stability of the running centrifuge cooling system is not affected.
(3) The pipeline and the valve of the inner loop of the centrifugal machine cooling system are connected through the original blind end flange of the pipeline, no welding operation is performed, and the quality of cooling water is not affected.
(4) By the method, a heat exchange link of the centrifugal machine cooling system is reduced, the refrigerating machine directly provides cooling water for the centrifugal machine, the outlet water temperature of refrigerating water of the refrigerating machine is improved, the load rate is reduced, and the energy-saving effect is obvious.
Drawings
FIG. 1 is a diagram of a centrifuge cooling water circulation system;
FIG. 2 is a chilled water circulation system diagram;
FIG. 3 is a diagram of a single loop circulation system for cooling water of a centrifuge;
in the figure: 1, a cooling water circulating pump; 2, an outlet pipeline port of the water pump; 3 a cooling water inlet valve; 4 a cooling water outlet valve; 5 a cooling water drain port; 6 a heat exchanger; 7 a chilled water inlet valve; 8 a chilled water outlet valve; 9, a chilled water drain port; 10, a chilled water circulating water pump; 11 a refrigerator evaporator; 12 a cooling water return communication valve; 13 a cooling water supply communication valve; 14 a chilled water circulation water pump bypass valve; 15 centrifuges.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
Fig. 1 and 2 are schematic illustrations of the dual circuit operation of the pre-retrofit centrifuge cooling system, respectively, and fig. 3 is a schematic illustration of the change of fig. 1 and 2 to a single circuit.
As shown in fig. 1, the cooling water of the centrifugal machine is provided with power by a circulating water pump 1, enters a heat exchanger 6 through a cooling water inlet valve 3, exchanges heat with chilled water, and is provided for the centrifugal machine through a cooling water outlet valve 4 after the temperature meets the operation requirement of the centrifugal machine, and the heat generated by the operation of the centrifugal machine is continuously taken away by the reciprocating circulation.
As shown in fig. 2, the chilled water is powered by a circulating water pump 10, enters a heat exchanger 6 through a chilled water inlet valve 7 to exchange heat with cooling water, enters a refrigerator evaporator 11 through a chilled water outlet valve 8 to cool, and the reciprocating circulation indirectly takes away heat generated by the operation of the centrifugal machine. Because the heat transfer is indirectly carried out through the heat exchanger, the cooling loss is large, the load rate of the refrigeration equipment is high, and the power consumption is high.
As shown in fig. 3, the double-loop single-loop operation system of the centrifugal machine cooling system comprises a centrifugal machine 15, wherein the centrifugal machine 15 is connected with a circulating water pump 1, the circulating water pump 1 is connected with a water pump outlet pipeline port 2 and a cooling water inlet valve 3, the cooling water inlet valve 3 is connected with a heat exchanger 6, the water pump outlet pipeline port 2 is connected with a cooling water return water communication valve 12, the cooling water return water communication valve 12 is respectively connected with a chilled water circulating water pump 10 and a chilled water circulating water pump bypass valve 14, and the chilled water circulating water pump 10 and the chilled water circulating water pump bypass valve 14 are both connected with a refrigerator evaporator 11;
the centrifugal machine 15 is also connected with a cooling water outlet valve 4 and a cooling water drain port 5, the cooling water outlet valve 4 is connected with the heat exchanger 6, the cooling water drain port 5 is connected with a cooling water supply communication valve 13, the cooling water supply communication valve 13 is connected with a chilled water drain port 9, and the chilled water drain port 9 is respectively connected with a chilled water outlet valve 8 and a refrigerator evaporator 11;
the heat exchanger 6 is connected with a chilled water inlet valve 7 and a chilled water outlet valve 8, the chilled water inlet valve 7 is connected with a chilled water circulating water pump 10, a chilled water circulating water pump bypass valve 14 and a chilled water return water communication valve 12, and the chilled water outlet valve 8 is connected with a refrigerator evaporator 11;
a method for changing double-loop to single-loop operation of a centrifugal machine cooling system, comprising the following steps:
s1: opening a cooling water return water communication valve 12, closing a cooling water inlet valve 3, opening a chilled water circulating water pump bypass valve 14, stopping the chilled water circulating water pump 10, closing the chilled water inlet valve 7, and enabling the cooling water return water of a centrifuge 15 to flow from the centrifuge 15 to the refrigerator evaporator 11;
s2: the cooling water supply communication valve 13 is opened, the chilled water outlet valve 8 and the cooling water outlet valve 4 are closed, and the cooling water supply of the centrifuge 15 flows from the refrigerator evaporator 11 to the centrifuge 15.
S3: and adjusting the outlet water temperature of the evaporator of the refrigerator according to the requirements of the process on the temperature of the cooling water of the centrifugal machine 15.
Through the steps, the double-loop operation of the cooling system of the centrifugal machine can be changed into single-loop operation, and the refrigerating machine directly provides cooling water meeting the operation requirement for the centrifugal machine.
Claims (3)
1. A centrifugal machine cooling system double-circuit changes single-circuit operation system which is characterized in that: the system comprises a centrifugal machine (15), wherein the centrifugal machine (15) is connected with a circulating water pump (1), the circulating water pump (1) is connected with a water pump outlet pipeline port (2) and a cooling water inlet valve (3), the cooling water inlet valve (3) is connected with a heat exchanger (6), the water pump outlet pipeline port (2) is connected with a cooling water return water communication valve (12), the cooling water return water communication valve (12) is respectively connected with a chilled water circulating water pump (10) and a chilled water circulating water pump bypass valve (14), and the chilled water circulating water pump (10) and the chilled water circulating water pump bypass valve (14) are both connected with a refrigerator evaporator (11);
the centrifugal machine (15) is also connected with a cooling water outlet valve (4) and a cooling water drain port (5), the cooling water outlet valve (4) is connected with the heat exchanger (6), the cooling water drain port (5) is connected with a cooling water supply communication valve (13), the cooling water supply communication valve (13) is connected with a chilled water drain port (9), and the chilled water drain port (9) is respectively connected with a chilled water outlet valve (8) and a refrigerator evaporator (11);
the heat exchanger (6) is connected with a chilled water inlet valve (7) and a chilled water outlet valve (8), the chilled water inlet valve (7) is connected with a chilled water circulating water pump (10), a chilled water circulating water pump bypass valve (14) and a chilled water return water communication valve (12), and the chilled water outlet valve (8) is connected with a refrigerator evaporator (11).
2. A method of using the dual-circuit to single-circuit operating system of the centrifuge cooling system of claim 1, comprising: the method comprises the following steps:
s1: opening a cooling water return water communication valve (12), closing a cooling water inlet valve (3), opening a chilled water circulating water pump bypass valve (14), stopping the chilled water circulating water pump (10), closing a chilled water inlet valve (7), and enabling the cooling water return water of a centrifugal machine (15) to flow from the centrifugal machine (15) to a refrigerator evaporator (11);
s2: opening a cooling water supply communication valve (13), closing a chilled water outlet valve (8) and a cooling water outlet valve (4), and enabling cooling water supply of a centrifugal machine (15) to flow from a refrigerator evaporator (11) to the centrifugal machine (15);
s3: and adjusting the outlet water temperature of the evaporator of the refrigerator.
3. The method for changing a double loop to a single loop operation of a cooling system of a centrifugal machine according to claim 2, wherein: in the step S3, the outlet water temperature of the evaporator of the refrigerator is adjusted according to the requirement of the process on the temperature of cooling water of the centrifugal machine (15).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011074102.XA CN114308419B (en) | 2020-09-30 | 2020-09-30 | Double-loop single-loop operation system and method for centrifugal machine cooling system |
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| CN202011074102.XA CN114308419B (en) | 2020-09-30 | 2020-09-30 | Double-loop single-loop operation system and method for centrifugal machine cooling system |
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| CN114308419A CN114308419A (en) | 2022-04-12 |
| CN114308419B true CN114308419B (en) | 2024-01-05 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203051143U (en) * | 2012-11-30 | 2013-07-10 | 保定市普朗特能源科技有限公司 | Cooling system capable of improving capacity of water ring vacuum pump |
| CN208082715U (en) * | 2018-01-24 | 2018-11-13 | 珠海润都制药股份有限公司 | A kind of centrifugal device |
| CN109539636A (en) * | 2018-10-10 | 2019-03-29 | 中核兰州铀浓缩有限公司 | A method of taking away air cooled box condenser heat |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3883061B2 (en) * | 2002-08-12 | 2007-02-21 | 三洋電機株式会社 | Stirling cold supply system |
| JP4023415B2 (en) * | 2003-08-06 | 2007-12-19 | 株式会社デンソー | Vapor compression refrigerator |
-
2020
- 2020-09-30 CN CN202011074102.XA patent/CN114308419B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203051143U (en) * | 2012-11-30 | 2013-07-10 | 保定市普朗特能源科技有限公司 | Cooling system capable of improving capacity of water ring vacuum pump |
| CN208082715U (en) * | 2018-01-24 | 2018-11-13 | 珠海润都制药股份有限公司 | A kind of centrifugal device |
| CN109539636A (en) * | 2018-10-10 | 2019-03-29 | 中核兰州铀浓缩有限公司 | A method of taking away air cooled box condenser heat |
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| CN114308419A (en) | 2022-04-12 |
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