CN203342803U - Non-contact liquid nitrogen cooling system - Google Patents
Non-contact liquid nitrogen cooling system Download PDFInfo
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- CN203342803U CN203342803U CN 201320420232 CN201320420232U CN203342803U CN 203342803 U CN203342803 U CN 203342803U CN 201320420232 CN201320420232 CN 201320420232 CN 201320420232 U CN201320420232 U CN 201320420232U CN 203342803 U CN203342803 U CN 203342803U
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- heat exchanger
- liquid nitrogen
- magnetic valve
- storage tank
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Abstract
The utility model provides a non-contact liquid nitrogen cooling system which comprises a low-temperature liquid nitrogen storage tank, a heat exchanger set, a circulating pump, a temperature transmitter and a programmable controller, wherein the low-temperature liquid nitrogen storage tank is provided with a filling port, a taking port and a control valve; a filter and a first electromagnetic valve are arranged in a taking port output pipeline; the heat exchanger set comprises a first heat exchanger and a second heat exchanger which are connected with each other through respective one shell pass interface, and one pipe pass interfaces of the first heat exchanger and the second heat exchanger are connected to a low-temperature liquid nitrogen output pipeline, the other pipe pass interfaces of the first heat exchanger and the second heat exchanger are emptied through pipelines, and the another shell pass interface of the first heat exchanger is connected to a refrigerant storage tank; the circulating pump is arranged in an outlet pipeline of the refrigerant storage tank, an outlet pipeline of the circulating pump is connected to two pipelines, one pipeline is connected to a reaction kettle, the other pipeline is a backflow pipeline which is connected to the other shell pass interface of the second heat exchanger, and a second electromagnetic valve is arranged in the backflow pipeline; the temperature transmitter is arranged on an outlet pipeline of the circulating pump; a third electromagnetic valve and a fourth electromagnetic valve are arranged in the inlet pipeline and outlet pipeline of the reaction kettle; the outlet pipeline of the reaction kettle is connected to the backflow pipeline; the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the temperature transmitter are respectively and electrically connected to the programmable controller.
Description
Technical field
The utility model relates to cooling system, and particularly noncontact liquid nitrogen cooling system, be applicable to the occasions such as medicine production.
Background technology
In the production of medicinal chemicals and medicine intermediate, many synthetic reactions need to be carried out at low temperatures, reaction mass are cooled to the specific low temperature of requirement, and the cool-down method usually adopted is the liquid nitrogen cooling method.
As shown in Figure 1, it comprises heat exchanger 10, ethanol storage tank 20, circulating pump 30 and reactor 40 to existing noncontact liquid nitrogen cooling system; Liquid nitrogen to ethanol storage tank 20, then is sent into reactor 40 by circulating pump 30 through heat exchanger 10, through reaction, is back to heat exchanger 10.
Above-mentioned existing liquid nitrogen cooling system is all to control manually, and pipe-line layout is unreasonable, causes the liquid nitrogen large usage quantity, and control accuracy is not high, and has wasted manpower.
Summary of the invention
The purpose of this utility model is to design a kind of noncontact liquid nitrogen cooling system, can improve the control accuracy of liquid nitrogen cooling system, improves the liquid nitrogen utilization rate, saves manpower.
For achieving the above object, the technical solution of the utility model is:
Noncontact liquid nitrogen cooling system, be connected to reactor by pipeline; It comprises, mouth and corresponding control valve are established and fill mouth, taken to the low temperature liquid nitrogen storage tank on it; Take mouthful connection one output pipe, establish filter and the first magnetic valve in this pipeline, in the two ends pipeline of the first magnetic valve, also establish hand-operated valve; Heat exchanger package, comprise first, second heat exchanger, by a shell side interface of a side separately, is connected; One tube side interface of these two heat exchanger opposite sides connects respectively the output pipe of low temperature liquid nitrogen storage tank, and another tube side interface is by pipeline emptying; Another shell side interface of described First Heat Exchanger is connected to coolant storage tank by pipeline; Circulating pump, be arranged in the export pipeline of described coolant storage tank; The export pipeline of circulating pump connects two pipelines, wherein a pipeline is connected to reactor, and another root is return line, and it is connected to another shell side interface of the second heat exchanger, be provided with the second magnetic valve in this return line, in the two ends pipeline of the second magnetic valve, also establish hand-operated valve; Temperature transmitter, be arranged at the export pipeline of circulating pump; Establish respectively the 3rd, the 4th magnetic valve in the import and export pipeline of described reactor, in the two ends pipeline of the 3rd, the 4th magnetic valve, establish hand-operated valve; The export pipeline of described reactor is connected to described return line; Programmable controller, described the first～four magnetic valve and temperature transmitter are electrically connected respectively programmable controller.
Further, described the first～four magnetic valve is equipped with bypass line and by-passing valve.
When refrigerant does not reach the temperature of a setting in temperature, do not enter reactor, just between refrigerant storage tank and heat exchanger, carry out circulating cooling, just enter reactor when reaching design temperature, at reactor, circulate between refrigerant storage tank and heat exchanger package.
The utility model has the advantage of:
1, by refrigerant storage tank export pipeline set temperature transmitter and magnetic valve being set in conjunction with the PLC control system, realize automation control, reduce the existing manually operated human input that relies on fully, particularly increased the accuracy of controlling, so also just increased the utilization rate of liquid nitrogen;
2, heat exchanger package adopts the mode of two heat exchanger series connection, by having increased a heat exchanger, has also just increased the efficiency of heat exchange, has reduced the cool time that starts refrigerant, has increased the efficiency of producing; And, when having entered the state of producing, when the temperature of refrigerant has surpassed the temperature of setting, liquid nitrogen supply that can a manual-lock heat exchanger, reduced the waste of liquid nitrogen.
The accompanying drawing explanation
Fig. 1 is the structural representation of existing noncontact liquid nitrogen cooling system.
The structural representation that Fig. 2 is the utility model noncontact liquid nitrogen cooling system.
The specific embodiment
Referring to Fig. 2, noncontact liquid nitrogen cooling system of the present utility model, be connected to reactor 8 by pipeline; It comprises, mouth 102 and corresponding control valve are established and fill mouth 101, taken to low temperature liquid nitrogen storage tank 1 on it; Take mouthful 102 connection one output pipes, establish filter 2 and the first magnetic valve FV110 in this pipeline, in the two ends pipeline of the first magnetic valve FV110, also establish hand-operated valve HV11, HV12; Heat exchanger package 3, comprise first, second heat exchanger 31,32, by a shell side interface 311,321 of a side separately, is connected; One tube side interface 312,322 of these two heat exchangers, 31,32 opposite sides connects respectively the output pipe of low temperature liquid nitrogen storage tank 1, and another tube side interface 312 ', 322 ' passes through pipeline emptying; Another shell side interface 311 ' of described First Heat Exchanger 31 is connected to coolant storage tank 4 by pipeline; Circulating pump 5, be arranged in the export pipeline of described coolant storage tank 4; The export pipeline of circulating pump 5 connects two pipelines, wherein a pipeline 51 is connected to reactor 8, another root is return line 52, it is connected to another shell side interface 321 ' of the second heat exchanger 32, be provided with the second magnetic valve FV210 in this return line 52, in the two ends pipeline of the second magnetic valve FV210, also establish hand-operated valve HV24, HV25; Temperature transmitter 6, be arranged at the export pipeline of circulating pump 5; Establish respectively the 3rd, the 4th magnetic valve FV310, FV311 in the import and export pipeline of described reactor 8, in the two ends pipeline of the 3rd, the 4th magnetic valve FV310, FV311, establish hand-operated valve HV27, HV28, HV30, HV31; The export pipeline of described reactor 8 is connected to described return line 52; Programmable controller 7, described the first～four magnetic valve FV110, FV210, FV310, FV311 and temperature transmitter 6 are electrically connected respectively programmable controller 7.
Further, described the first～four magnetic valve FV110, FV210, FV310, FV311 are equipped with bypass line and by-passing valve HV13, HV26, HV29, HV32.
The liquid nitrogen of low temperature liquid nitrogen storage tank 1 output enters refrigerant storage tank 4 after heat exchanger package 3 heat exchange, the refrigerant of exporting from refrigerant storage tank 4 is through temperature transmitter 6 detected temperatures, while as temperature, not reaching the temperature of a setting, close the 3rd, the 4th magnetic valve FV310, FV311 in the import and export pipeline that is connected to reactor 8, refrigerant does not enter reactor 8, open the second magnetic valve FV210 in return line 52, make refrigerant carry out circulating cooling between refrigerant storage tank 4 and heat exchanger package 3; When reaching design temperature, open the 3rd, the 4th magnetic valve FV310, FV311, the second magnetic valve FV210 in closing volume pipeline 52, make refrigerant enter reactor 8, and circulation between reactor 8, refrigerant storage tank 4 and heat exchanger package 5.
Claims (2)
1. noncontact liquid nitrogen cooling system, be connected to reactor by pipeline; It is characterized in that, comprise,
The low temperature liquid nitrogen storage tank, establish and fill mouth, take mouth and corresponding control valve on it; Take mouthful connection one output pipe, establish filter and the first magnetic valve in this pipeline, in the two ends pipeline of the first magnetic valve, also establish hand-operated valve;
Heat exchanger package, comprise first, second heat exchanger, by a shell side interface of a side separately, is connected; One tube side interface of these two heat exchanger opposite sides connects respectively the output pipe of low temperature liquid nitrogen storage tank, and another tube side interface is by pipeline emptying; Another shell side interface of described First Heat Exchanger is connected to coolant storage tank by pipeline;
Circulating pump, be arranged in the export pipeline of described coolant storage tank; The export pipeline of circulating pump connects two pipelines, wherein a pipeline is connected to reactor, and another root is return line, and it is connected to another shell side interface of the second heat exchanger, be provided with the second magnetic valve in this return line, in the two ends pipeline of the second magnetic valve, also establish hand-operated valve;
Temperature transmitter, be arranged at the export pipeline of circulating pump;
Establish respectively the 3rd, the 4th magnetic valve in the import and export pipeline of described reactor, in the two ends pipeline of the 3rd, the 4th magnetic valve, establish hand-operated valve; The export pipeline of described reactor is connected to described return line;
Programmable controller, described the first～four magnetic valve and temperature transmitter are electrically connected respectively programmable controller.
2. noncontact liquid nitrogen cooling system as claimed in claim 1, is characterized in that, described the first～four magnetic valve is equipped with bypass line and by-passing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320420232 CN203342803U (en) | 2013-07-15 | 2013-07-15 | Non-contact liquid nitrogen cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320420232 CN203342803U (en) | 2013-07-15 | 2013-07-15 | Non-contact liquid nitrogen cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203342803U true CN203342803U (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320420232 Expired - Fee Related CN203342803U (en) | 2013-07-15 | 2013-07-15 | Non-contact liquid nitrogen cooling system |
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| CN (1) | CN203342803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152967A (en) * | 2014-07-16 | 2014-11-19 | 常州大学 | Aluminum alloy anode oxidation device |
-
2013
- 2013-07-15 CN CN 201320420232 patent/CN203342803U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152967A (en) * | 2014-07-16 | 2014-11-19 | 常州大学 | Aluminum alloy anode oxidation device |
| CN104152967B (en) * | 2014-07-16 | 2017-02-01 | 常州大学 | Aluminum alloy anode oxidation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI BAOMIN INDUSTRIAL GASES CO., LTD. Free format text: FORMER OWNER: SHANGHAI BAOSTEEL GAS CO., LTD. Effective date: 20140307 |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201204 PUDONG NEW AREA, SHANGHAI TO: 200241 MINHANG, SHANGHAI |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140307 Address after: 200241 Shanghai, Wu Long Road, No. 4400, room 257, building 405 Patentee after: Shanghai Baomin Industrial Gases Co., Ltd. Address before: 201204 Shanghai city Pudong New Area No. 2277 Longyang Road Yongda International Building room 902 Patentee before: Shanghai Baosteel Gas Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI BAOSTEEL GAS CO., LTD. Free format text: FORMER OWNER: SHANGHAI BAOMIN INDUSTRIAL GASES CO., LTD. Effective date: 20150106 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200241 MINHANG, SHANGHAI TO: 200241 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150106 Address after: 200241 Shanghai Guo Shou Jing Road, Zhangjiang High Tech Park of Pudong New Area No. 515 North Building 3 floor Patentee after: Shanghai Baosteel Gas Co., Ltd. Address before: 200241 Shanghai, Wu Long Road, No. 4400, room 257, building 405 Patentee before: Shanghai Baomin Industrial Gases Co., Ltd. |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Baosteel Gas Co., Ltd. Assignor: Shanghai Baomin Industrial Gases Co., Ltd. Contract record no.: 2014310000196 Denomination of utility model: Non-contact liquid nitrogen cooling system Granted publication date: 20131218 License type: Exclusive License Record date: 20141224 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20180715 |
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| CF01 | Termination of patent right due to non-payment of annual fee |