CN207501328U - A kind of heat-exchange unit system - Google Patents
A kind of heat-exchange unit system Download PDFInfo
- Publication number
- CN207501328U CN207501328U CN201721584120.6U CN201721584120U CN207501328U CN 207501328 U CN207501328 U CN 207501328U CN 201721584120 U CN201721584120 U CN 201721584120U CN 207501328 U CN207501328 U CN 207501328U
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- China
- Prior art keywords
- refrigerator
- heat
- heat exchanger
- entrance
- tower
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- Expired - Fee Related
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Abstract
The utility model is related to a kind of heat-exchange unit systems, exit and entrance of the inlet and outlet of the refrigerator heat source tube respectively with workshop appliance coolant is connect, the inlet and outlet of the low-temperature receiver pipe of the refrigerator is connect respectively with the export and import of cooling tower, it is characterized in that, the import of the heat source tube of at least one refrigerator is connected with pre-cooling unit to be opened/closed.Compared with prior art, the utility model utilizes original system refrigerator, using natural cold source, reduces refrigerator load, reduces power consumption；And control the refrigerator quantity for participating in heat exchange or plate heat exchanger quantity, high degree of automation, and cold that can be fully used by PLC controller.
Description
Technical field
The utility model is related to cooling technology fields, and in particular to a kind of heat-exchange unit system.
Background technology
In fields such as oil, chemical industry, metallurgy, electric power, heat exchanger can be often used, the heat generated in production process is timely
It removes, in case accumulation of heat is caused danger.When the flow that exchanges heat is larger, commonly uses more heat exchangers and complete to exchange heat jointly, such as Fig. 1 institutes
Show：The more refrigerators being arranged in parallel are equipped in workshop, every refrigerator is equivalent to a heat exchanger, is cooled down for workshop appliance
Coolant when flowing out equipment temperature it is higher, be divided into multiply and respectively enter in each refrigerator, in refrigerator with come
Heat exchange is carried out from the coolant of cooling tower, then collects again and cools down to workshop appliance.This set heat-exchange unit is maximum to be lacked
It is exactly to adjust underaction to fall into, and can not adapt to the change of environment temperature and come from the change of equipment coolant rate, cause
The waste of energy can not meet heat exchange demand.
Utility model content
The purpose of this utility model is exactly to provide that a kind of low energy consumption to overcome the problems of the above-mentioned prior art
Heat-exchange unit system.
The purpose of this utility model can be achieved through the following technical solutions：The import of the refrigerator heat source tube and go out
Exit and entrance mouthful respectively with workshop appliance coolant is connect, the inlet and outlet of the low-temperature receiver pipe of the refrigerator respectively with it is cold
But the export and import connection of tower, the import of the heat source tube of at least one refrigerator are connected with pre-cooling unit to be opened/closed.
The utility model realizes the switching between precooling and refrigerator direct heat transfer, Er Qiegen by setting pre-cooling unit to be opened/closed
According to needs, pre-cooling unit is set on one or more even all of refrigerators, opens the precooling of respective numbers as needed
Unit so that whole system can meet the needs of freezing and cause the waste of cold.
The pre-cooling unit is plate heat exchanger, and the entrance and exit of the plate heat exchanger A sides is freezed with entering
The chilled water return pipe connection of machine A side-entrances, and the entrance pipe, export pipeline and chilled water in plate heat exchanger A sides return
Motor-driven valve is equipped on the pipeline of part between the entrance pipe and export pipeline of plate heat exchanger A sides on water pipe, it is described
The entrance and exit of plate heat exchanger B sides is connect respectively with the export and import of cooling tower.
With the cooling tower and identical with the cooling tower structure that the refrigerator B sides are connected of plate heat exchanger B sides connection,
Including a Fans and a packed tower, the coolant for carrying out heat exchange enters from the tower top of packed tower, declines in fan action
Temperature.It is at low cost by the air-cooled heat dissipation for carrying out cooling water, it is then to increase the heat exchange area of cooling water, carry by packed tower
High cooling efficiency.
The connecting line of the packed tower and plate heat exchanger B side entrances or refrigerator B side entrances be equipped with frequency conversion type from
Heart booster pump.Centrifugal blower-pump is set so that cooling water can be completed to recycle.
Each refrigerator A side entrances are equipped with motor-driven valve and frequency conversion type centrifugal blower-pump.Motor-driven valve, Ke Yigen are set
According to the work number of units of demand selection refrigerator, the utilization rate of cold is further improved；Centrifugal blower-pump is set so that chilled water has
Enough power completes cycle.
The system comprises one for the PLC controller that motor-driven valve is controlled to be opened and closed, it is connect with the refrigerator A side outlets
Chilled water feed pipe be equipped with temperature sensor, the temperature sensor connect with PLC controller.By temperature controller come
Sense cold demand, and by PLC controller control motor-driven valve opening and closing, so as to control participate in exchange heat refrigerator quantity or
Plate heat exchanger quantity, high degree of automation.
Compared with prior art, the beneficial effects of the utility model are embodied in following several respects：
(1) using original system refrigerator, using natural cold source, refrigerator load is reduced, reduces power consumption；
(2) it is controlled by PLC controller and participates in the refrigerator quantity of heat exchange or plate heat exchanger quantity, the degree of automation
Height, and cold can be fully used.
Description of the drawings
Fig. 1 is the connection diagram of existing heat-exchange unit system；
Fig. 2 is the connection diagram of the utility model heat-exchange unit system.
Wherein, 1 is refrigerator, and 2 be plate heat exchanger, and 3 be cooling tower, and 4 be centrifugal blower-pump, and 5 be motor-driven valve, and 6 be temperature
Sensor is spent, LDS is chilled water feed pipe, and LDH is chilled water return pipe, and LQS is cooling water pipeline.
Specific embodiment
Elaborate below to the embodiment of the utility model, the present embodiment using technical solutions of the utility model before
It puts and is implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited
In following embodiments.
Embodiment 1
A kind of heat-exchange unit system, structure is as shown in Fig. 2, including four refrigerators 1 in parallel, the heat source of refrigerator 1
The import of pipe is connect with the outlet of workshop appliance coolant by chilled water feed pipe LDH, the outlet of the heat source tube of refrigerator 1 with
Workshop appliance coolant inlet by the LDS connections of chilled water return pipe, the inlet and outlet of the low-temperature receiver pipe of refrigerator 1 respectively with it is cold
But the export and import of tower 3 is connected by cooling water pipeline LQS, wherein, there are one the import of heat source tube of refrigerator 1, be connected with can
The pre-cooling unit of opening and closing.
Pre-cooling unit is plate heat exchanger 2, and the entrance and exit of 2 tube side of plate heat exchanger is with entering 1 tube side of refrigerator
The chilled water return pipe LDH connections of import, and returned in the entrance pipe, export pipeline and chilled water of 2 tube side of plate heat exchanger
On water pipe LDH motor-driven valve is equipped on the pipeline of part between the entrance pipe and export pipeline of 2 tube side of plate heat exchanger
5, the export and import of the entrance and exit of 2 shell side of plate heat exchanger respectively with cooling tower 3 is connect.
The cooling tower 3 that is connected with the B sides of plate heat exchanger 2 and identical with 3 structure of cooling tower that the B sides of refrigerator 1 are connected,
Including a Fans and a packed tower, the coolant for carrying out heat exchange enters from the tower top of packed tower, declines in fan action
Temperature.Packed tower is equipped with frequency conversion type centrifugation with the connecting line of the B side entrances of plate heat exchanger 2 or the B side entrances of refrigerator 1 and increases
Press pump 4.
The A side entrances of each refrigerator 1 are equipped with motor-driven valve 5 and frequency conversion type centrifugal blower-pump 4.System is used for including one
The PLC controller that motor-driven valve 5 is controlled to be opened and closed, the chilled water feed pipe being connect with the A side outlets of refrigerator 1 are equipped with temperature sensing
Device 6, temperature sensor 6 are connect with PLC controller, and PLC controller is not drawn into Fig. 2.
The operation principle of this system is as follows：According to the chilled water demand of present plant, in the relatively low feelings of outdoor environment temperature
Under condition (be less than 15 DEG C), it is board-like with again flowing through that cooling water in cooling tower by frequency conversion centrifugal blower-pump flows through plate heat exchanger
The chilled water return water of heat exchanger exchanges heat, and cooling water takes away chilled water heat and achievees the purpose that reduce chilled water temperature.Then
The cooling water for carrying amount of heat flow to packed tower, and under the action of wind turbine, compulsory latent heat and sensible heat convection current are carried out with air
It exchanges, air takes away a large amount of cooling water heats, reaches cooling water temperature purpose.The cooling water circulation to have been cooled down flows into board-like change
Hot device.
From workshop with can end flow back chilled water in plate heat exchanger at be cooled water cooling after be back to freezing unit
Secondary refrigeration is carried out, forms closed cycle into workshop energy end herein.
Claims (6)
1. a kind of heat-exchange unit system, which includes the refrigerator of multiple parallel connections, the import of the refrigerator heat source tube and goes out
Exit and entrance mouthful respectively with workshop appliance coolant is connect, the inlet and outlet of the low-temperature receiver pipe of the refrigerator respectively with it is cold
But the export and import connection of tower, which is characterized in that the import of the heat source tube of at least one refrigerator, which is connected with, to be opened and closed
Pre-cooling unit.
2. a kind of heat-exchange unit system according to claim 1, which is characterized in that the pre-cooling unit is plate-type heat-exchange
Device, the entrance and exit of the plate heat exchanger A sides are connect with entering the chilled water return pipe of refrigerator tube side import, and
It is located at the entrance pipe of plate heat exchanger A sides on the entrance pipes of plate heat exchanger A sides, export pipeline and chilled water return pipe
Be equipped with motor-driven valve on the pipeline of part between export pipeline, the entrance and exits of the plate heat exchanger B sides respectively with it is cold
But the export and import connection of tower.
3. a kind of heat-exchange unit system according to claim 2, which is characterized in that connect with the plate heat exchanger B sides
Cooling tower and identical with the cooling tower structure that the refrigerator shell side is connected, including a Fans and a packed tower, carry out
The coolant of heat exchange enters from the tower top of packed tower, cools down under fan action.
4. a kind of heat-exchange unit system according to claim 3, which is characterized in that the packed tower and plate heat exchanger B
Side entrance is equipped with frequency conversion type centrifugal blower-pump.
5. a kind of heat-exchange unit system according to claim 1, which is characterized in that each refrigerator tube-side inlet is equal
Equipped with motor-driven valve and frequency conversion type centrifugal blower-pump.
6. a kind of heat-exchange unit system according to claim 2 or 5, which is characterized in that the system comprises one to be used for
The PLC controller of motor-driven valve opening and closing is controlled, is passed with the chilled water feed pipe of refrigerator tube side outlet connection equipped with temperature
Sensor, the temperature sensor are connect with PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721584120.6U CN207501328U (en) | 2017-11-23 | 2017-11-23 | A kind of heat-exchange unit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721584120.6U CN207501328U (en) | 2017-11-23 | 2017-11-23 | A kind of heat-exchange unit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207501328U true CN207501328U (en) | 2018-06-15 |
Family
ID=62506006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721584120.6U Expired - Fee Related CN207501328U (en) | 2017-11-23 | 2017-11-23 | A kind of heat-exchange unit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207501328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990456A (en) * | 2017-11-23 | 2018-05-04 | 宁波杭州湾新区祥源动力供应有限公司 | A kind of heat-exchange unit system |
-
2017
- 2017-11-23 CN CN201721584120.6U patent/CN207501328U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990456A (en) * | 2017-11-23 | 2018-05-04 | 宁波杭州湾新区祥源动力供应有限公司 | A kind of heat-exchange unit system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180615 Termination date: 20191123 |