CN216522599U - Year-round refrigeration type cooling water system for water-cooling integrated unit - Google Patents
Year-round refrigeration type cooling water system for water-cooling integrated unit Download PDFInfo
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- CN216522599U CN216522599U CN202123186157.2U CN202123186157U CN216522599U CN 216522599 U CN216522599 U CN 216522599U CN 202123186157 U CN202123186157 U CN 202123186157U CN 216522599 U CN216522599 U CN 216522599U
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Abstract
The utility model provides an all-year refrigeration type cooling water system for a water-cooling integrated unit, which comprises a unit condenser, a cooling tower and a cooling water pipeline for connecting the unit condenser and the cooling tower, wherein the cooling water pipeline comprises a cooling water outlet pipeline for connecting a condenser water outlet and a cooling tower water inlet and a cooling water inlet pipeline for connecting the condenser water inlet and the cooling tower water outlet, and an adjusting device for adjusting the amount of cold water entering the condenser water inlet is arranged on the cooling water outlet pipeline and the cooling water inlet pipeline in a matched manner. The annual refrigeration type cooling water system for the water-cooling integrated unit is provided with the adjusting device, and the amount of cold water entering a water inlet of the condenser is adjusted, so that a normal loading pressure difference is established for the screw compressor, and the compressor can be started normally.
Description
Technical Field
The utility model belongs to the field of water cooling units, and particularly relates to an all-year refrigeration type cooling water system for a water cooling integrated unit.
Background
The current water-cooling screw type water chilling unit is developing towards integration, integration direction, has both solved the installation problem that traditional water chilling unit relies on the computer lab, provides convenience for the engineering implementation simultaneously. However, when the integrated unit is applied to an annual refrigeration type use occasion, the integrated unit can face lower use environment temperature in winter, and when the environment temperature is less than or equal to 15 ℃, the screw compressor cannot establish normal loading pressure difference, the unit is difficult to start and easy to lack oil, the compressor can be damaged after long-term operation, and the service life of the unit is influenced; when the ambient temperature is less than or equal to 2 ℃, the condenser, the cooling tower and the cooling water pipeline of the unit are at risk of freezing. The integrated unit is more compact than the traditional engineering system, the water capacity of cooling water is smaller, the temperature of the same shutdown time is reduced more quickly, and meanwhile, the integrated unit faces lower environmental temperature, and the problems are particularly highlighted.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model aims to provide an all-year refrigeration type cooling water system for a water-cooling integrated unit, so as to solve the problems that the existing integrated unit is difficult to start in winter due to lower environmental temperature, is easy to lack oil, damages a compressor after long-term operation, and affects the service life of the unit.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
an all-year refrigeration type cooling water system for a water-cooling integrated unit comprises a unit condenser, a cooling tower and a cooling water pipeline connecting the unit condenser and the cooling tower, wherein the cooling water pipeline comprises a cooling water outlet pipeline connecting a water outlet of the unit condenser and a water inlet of the cooling tower and a cooling water inlet pipeline connecting a water inlet of the unit condenser and a water outlet of the cooling tower, and an adjusting device for adjusting the amount of cold water entering the water inlet of the condenser is arranged on the cooling water outlet pipeline in a matched manner with the cooling water inlet pipeline;
the cooling water inlet pipeline is sequentially provided with an anti-freezing electric heating device and a water pump from one side of the cooling tower to one side of the unit condenser; and a cooling water flow switch is arranged on the cooling water outlet pipeline.
Furthermore, the adjusting device comprises a shunting type proportional three-way valve, a first temperature sensor arranged at the water outlet of the condenser, and a controller for controlling the opening degree of the shunting type proportional three-way valve according to a temperature signal of the first temperature sensor;
the flow-dividing type proportional three-way valve is provided with a water inlet valve port, a straight-through water outlet valve port and a bypass water outlet valve port, the water inlet valve port is connected with a water pump discharge port, the straight-through water outlet valve port is connected with a condenser water inlet, and the bypass water outlet valve port is connected with a cooling water outlet pipeline.
Furthermore, the adjusting device comprises a shunting type proportional three-way valve, a first temperature sensor arranged at the water outlet of the condenser, and a controller for controlling the opening degree of the shunting type proportional three-way valve according to a temperature signal of the first temperature sensor;
the flow-dividing type proportional three-way valve is provided with a water inlet valve port, a straight-through water outlet valve port and a bypass water outlet valve port, the water inlet valve port is connected with a water outlet of the condenser, the straight-through water outlet valve port is connected with a water inlet of the cooling tower, and the bypass water outlet valve port is connected with a water pump suction inlet.
The controller is connected with one output end of the temperature sensor and used for obtaining a temperature signal of a water outlet of the condenser, the controller is also connected with a control end of the split-flow type proportional three-way valve and used for controlling the opening degree of the split-flow type proportional three-way valve, the controller adopts the existing PID control technology, and the controller can be of a type which can be, but is not limited to Siemens RWD 68.
Furthermore, a check valve is arranged between the water inlet of the cooling water tower and the through water outlet valve port.
Furthermore, the anti-freezing electric heating device comprises an anti-freezing electric heater, an electric heating bypass branch, a second temperature sensor arranged at the water inlet of the condenser and a third temperature sensor arranged at the water outlet of the cooling tower, wherein a first stop valve is arranged at one end of the anti-freezing electric heater close to the water pump, and a second stop valve is arranged at one end of the anti-freezing electric heater close to the water outlet of the cooling tower;
one end of the electric heating bypass branch is connected with one end, close to the water pump, of the first stop valve, the other end of the electric heating bypass branch is connected with one end, close to the cooling tower, of the second stop valve, and the third stop valve is arranged on the electric heating bypass branch.
Compared with the prior art, the all-year refrigeration type cooling water system for the water-cooling integrated unit has the following beneficial effects:
(1) the annual refrigeration type cooling water system for the water-cooling integrated unit is provided with the adjusting device, and the amount of cold water entering a water inlet of the condenser is adjusted, so that a normal loading pressure difference is established for the screw compressor, and the compressor can be normally started; the anti-freezing protection of the whole cooling water system is realized by increasing anti-freezing electric heating, and compared with the traditional method of starting a compressor to increase the temperature of cooling water, the method reduces energy consumption.
(2) The annual refrigeration type cooling water system for the water-cooling integrated unit adopts the shunting type proportional three-way valve, the bypass range is 0-100%, higher stability is obtained, and the system can be applied to the environment with lower temperature.
(3) According to the year-round refrigeration type cooling water system for the water-cooling integrated unit, the anti-freezing electric heating bypass branch is added, the system can be opened for use in summer and in transition seasons, the anti-freezing electric heating pipeline is cut off, the mechanical service life of electric heating can be greatly prolonged, damage of an electric heating pipe due to mechanical shock under long-time flushing can be avoided, and potential safety hazards of electric leakage are eliminated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic diagram of a small-flow large-temperature-difference principle of an annual refrigeration type cooling water system for a water-cooling integrated unit according to an embodiment of the utility model;
fig. 2 is a schematic diagram of a circulating temperature rise principle of an annual refrigeration type cooling water system for a water-cooling integrated unit according to an embodiment of the utility model.
Description of reference numerals:
1-a unit condenser; 11-water outlet of condenser; 12-condenser water inlet; 2-a cooling tower; 21-cooling tower water inlet; 22-a cooling tower water outlet; 3-a regulating device; 31-a first temperature sensor; 32-split ratio three-way valve; 33-a controller; 4-cooling water flow switch; 5-anti-freezing electric heating device; 51-antifreezing electric heating; 52-temperature sensor two; 53-temperature sensor three; 54-stop valve one; 55-a second stop valve; 56-electrically heating the bypass branch; 57-stop valve III; 6, a water pump; 7-a check valve; 8-cooling water outlet pipeline; 9-cooling water inlet pipeline.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The first embodiment is as follows:
as shown in fig. 1, the operation of the split proportional three-way valve 32 of the present application is performed by the controller 33 according to the condenser outlet water temperature T1 obtained by the first temperature sensor 31;
when the measured temperature T1 is less than the target temperature T0 (20 ℃ is set in the example), the diversion type proportional three-way valve 32 is opened to the direction of a bypass water outlet valve port c, the bypass water quantity is increased, less water enters the unit condenser 1 through a straight water outlet valve port b, the unit can obtain larger water inlet and outlet temperature difference under the same heat exhaust quantity, and therefore the water outlet temperature of the condenser is quickly increased and approaches to the target temperature T0.
When the measured temperature T1 is higher than the target temperature T0 (20 ℃ is set in the example), the diversion type proportional three-way valve 32 is opened to the direction of the direct water outlet valve port b, the direct water quantity is increased, more water quantity normally enters the unit condenser 1 and enters the cooling tower 2 through the condenser water outlet pipe 10, and the unit recovers normal heat dissipation.
The essence of the process is that the outlet water temperature of the condenser is improved in a mode of small flow and large temperature difference, and the mode has quick response; meanwhile, the PID parameters of the controller 33 are adjusted according to actual conditions, the bypass upper limit of the proportional three-way valve is set to 70% in the example, and unit protection caused by depth adjustment is avoided.
Example two:
as shown in fig. 2, the operation of the split proportional three-way valve 32 of the present application is performed by the controller 33 according to the condenser outlet water temperature T1 obtained by the first temperature sensor 31;
when the measured temperature T1 is less than the target temperature T0 (20 ℃ is set in the example), the diversion type proportional three-way valve 32 is opened to the direction of a bypass water outlet valve port c to increase the bypass water quantity, so that more water enters the condenser after entering a water pump 6 suction port f through the bypass water outlet valve port c, and then the water actually entering the unit condenser 1 performs short circulation, so that the outlet water temperature of the condenser is quickly increased and approaches the target temperature T0.
When the measured temperature T1 is higher than the target temperature T0 (20 ℃ is set in the example), the diversion type proportional three-way valve 32 is opened to the direction of the direct water outlet valve port b, the direct water quantity is increased, more water quantity normally enters the cooling tower 2, and the unit recovers normal heat dissipation.
The process is essentially realized by improving the outlet water temperature of the condenser in a circulating temperature rise mode, the mode can ensure the water capacity of the condenser 1, and the water temperature oscillation is not easy to occur; however, when the unit is stopped, because there is a height difference H between the suction inlet f of the water pump 6 and the water inlet of the cooling tower 2, when the unit is restarted, the water pump 6 is easy to suck air to cause cavitation, and the unit cannot be normally started at the same time, therefore, the check valve 7 is added in the application, so that the air can be isolated when the unit is stopped, the water pump 6 can normally suck water when the unit is restarted, and the normal start of the unit is protected.
As shown in fig. 1 and fig. 2, in both the first embodiment and the second embodiment, the anti-freezing electric heater 51 is disposed on the cooling water inlet pipeline 9, and the specific implementation method is as follows:
when refrigerating in summer and transition seasons, the first stop valve 54 and the second stop valve 55 can be closed, and the third stop valve 57 on the electric heating bypass branch 56 is opened at the same time, so that cooling water enters the suction port f of the water pump 6 through the electric heating bypass branch 56, impact and vibration of an electric heating pipe in the time period can be effectively avoided, and the service life of the electric heater is prolonged;
namely, the second temperature sensor 52 detects the measured temperature T2 of the water inlet 12 of the condenser, the third temperature sensor 53 detects the measured temperature T3 of the water outlet 22 of the cooling tower, and when the measured temperature Min < T2, T3> (smaller of T2, T3) is not less than the cooling water anti-freezing heating closing temperature Tg (12 ℃ is set in the example), the anti-freezing electric heating 51 is powered off, and the next heating period is waited.
When in winter refrigeration, the first stop valve 54 and the second stop valve 55 can be opened, and the third stop valve 57 on the electric heating bypass branch 56 is closed, so that cooling water flows into the suction port f of the water pump 6 after passing through the anti-freezing electric heating 51;
that is, when the measured temperature Min < T2, T3> (smaller of T2, T3) < the cooling water anti-freezing heating temperature Te (2 ℃ C. is set in this example), the anti-freezing electric heater 51 is energized while the heat is radiated to the entire system by the water pump 6.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides an integrative unit of water-cooling is with annual refrigeration type cooling water system which characterized in that: the cooling water system comprises a unit condenser (1), a cooling tower (2) and a cooling water pipeline connecting the unit condenser (1) and the cooling tower (2), wherein the cooling water pipeline comprises a cooling water outlet pipeline (8) connecting a condenser water outlet (11) and a cooling tower water inlet (21), and a cooling water inlet pipeline (9) connecting a condenser water inlet (12) and a cooling tower water outlet (22), and the cooling water outlet pipeline (8) and the cooling water inlet pipeline (9) are matched with each other to be provided with an adjusting device (3) for adjusting the amount of cold water entering the condenser water inlet (12);
the anti-freezing electric heating device (5) and the water pump (6) are sequentially arranged on the cooling water inlet pipeline (9) from one side of the cooling tower (2) to one side of the unit condenser (1); and a cooling water flow switch (4) is arranged on the cooling water outlet pipeline (8).
2. The all-year refrigeration type cooling water system for the water-cooled integrated unit as claimed in claim 1, wherein: the adjusting device (3) comprises a shunting type proportional three-way valve (32), a first temperature sensor (31) arranged at a water outlet of the unit condenser (1), and a controller (33) for controlling the opening degree of the shunting type proportional three-way valve (32) according to a temperature signal of the first temperature sensor (31);
the flow-dividing type proportional three-way valve (32) is provided with a water inlet valve port, a straight-through water outlet valve port and a bypass water outlet valve port, the water inlet valve port is connected with a water outlet of the water pump (6), the straight-through water outlet valve port is connected with a water inlet of the condenser, and the bypass water outlet valve port is connected with a cooling water outlet pipeline (8).
3. The all-year-round refrigeration type cooling water system for the water-cooled integrated unit as claimed in claim 1, characterized in that: the adjusting device (3) comprises a shunting type proportional three-way valve (32), a first temperature sensor (31) arranged at a water outlet of the unit condenser (1), and a controller (33) for controlling the opening degree of the shunting type proportional three-way valve (32) according to a temperature signal of the first temperature sensor (31);
the flow-dividing type proportional three-way valve (32) is provided with a water inlet valve port, a straight-through water outlet valve port and a bypass water outlet valve port, the water inlet valve port is connected with a water outlet (11) of the condenser, the straight-through water outlet valve port is connected with a water inlet of the cooling tower (2), and the bypass water outlet valve port is connected with a suction inlet of the water pump (6).
4. The all-year refrigeration type cooling water system for the water-cooled integrated unit as claimed in claim 3, wherein: and a check valve (7) is arranged between the water inlet of the cooling tower and the straight-through water outlet valve port.
5. The all-year refrigeration type cooling water system for the water-cooled integrated unit as claimed in claim 1, wherein: the anti-freezing electric heating device (5) comprises an anti-freezing electric heater (51), an electric heating bypass branch (56), a second temperature sensor (52) arranged at the water inlet of the condenser and a third temperature sensor (53) arranged at the water outlet of the cooling tower (2), wherein a first stop valve (54) is arranged at one end of the anti-freezing electric heater (51) close to the water pump (6), and a second stop valve (55) is arranged at one end of the anti-freezing electric heater (51) close to the water outlet of the cooling tower (2);
one end of the electric heating bypass branch (56) is connected with one end of the first stop valve (54) close to the water pump (6), the other end of the electric heating bypass branch is connected with one end of the second stop valve (55) close to the cooling tower (2), and the third stop valve (57) is arranged on the electric heating bypass branch (56).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123186157.2U CN216522599U (en) | 2021-12-17 | 2021-12-17 | Year-round refrigeration type cooling water system for water-cooling integrated unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123186157.2U CN216522599U (en) | 2021-12-17 | 2021-12-17 | Year-round refrigeration type cooling water system for water-cooling integrated unit |
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| Publication Number | Publication Date |
|---|---|
| CN216522599U true CN216522599U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123186157.2U Active CN216522599U (en) | 2021-12-17 | 2021-12-17 | Year-round refrigeration type cooling water system for water-cooling integrated unit |
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| CN (1) | CN216522599U (en) |
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2021
- 2021-12-17 CN CN202123186157.2U patent/CN216522599U/en active Active
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