CN113589859A - Cooling tower water temperature control device - Google Patents
Cooling tower water temperature control device Download PDFInfo
- Publication number
- CN113589859A CN113589859A CN202110820153.0A CN202110820153A CN113589859A CN 113589859 A CN113589859 A CN 113589859A CN 202110820153 A CN202110820153 A CN 202110820153A CN 113589859 A CN113589859 A CN 113589859A
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- Prior art keywords
- fan
- alternating current
- current contactor
- relay
- switch
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
- G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
Abstract
The invention discloses a cooling tower water temperature control device which comprises a first fan and a second fan, wherein the first fan and the second fan are both connected with a main power supply leakage switch MFB, the main power supply leakage switch MFB is connected with a fuse FU, the fuse FU is connected with a power switch S1, the power switch S1 is respectively connected with a power indicator HL green, a second-gear instruction change-over switch S2, a first eight-pin small relay K11 and a first eight-pin small relay K12, the automatic end of the second-gear instruction change-over switch S2 is connected with a temperature controller KC, the constant end of the second-gear instruction change-over switch S2 is connected with an eight-pin small relay K1, and a switch KC is connected between the automatic end of the second-gear instruction change-over switch S2 and the eight-pin small relay K1. According to the invention, the cooling tower water temperature controller can accurately control the cooling tower water temperature, no matter the day or the night, no matter the spring, the summer, the autumn and the winter, the set temperature is about how many degrees; can play the role of saving electricity and energy.
Description
Technical Field
The invention relates to the technical field of cooling tower water temperature control, in particular to a cooling tower water temperature control device.
Background
The temperature of the water in the cooling tower is not convenient to control, and the water temperature can not be adjusted in the daytime, at night, in spring, summer, autumn and winter.
Disclosure of Invention
The invention aims to provide a cooling tower water temperature control device to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a cooling tower water temperature control device, includes first fan and second fan, first fan and second fan all are connected with total mains leakage switch MFB, total mains leakage switch MFB is connected with fuse FU, fuse FU is connected with switch S1, switch S1 is connected with power indicator HL green, second gear instruction change over switch S2, first eight foot miniaturely relay K11 and first eight foot miniaturely relay K12 respectively, the automatic end of second gear instruction change over switch S2 is connected with temperature controller KC, the constant end of second gear instruction change over switch S2 is connected with eight foot miniaturely relay K1, be connected with KC between the automatic end of second gear instruction change over switch S2 and the eight foot miniaturely relay K1, it has first thermorelay FR11 and fan AC contactor KM1 to establish ties on the first eight foot miniaturely relay K11, it has first 12 to connect in parallel on first thermorelay FR11 and the fan AC contactor KM1, The intelligent air conditioner comprises a first fan alternating current contactor KM12 and a first fan operation indicator lamp HL red, a first fan alternating current contactor KM11 and a first fan operation indicator lamp HL green are connected to the fan alternating current contactor KM1 in parallel, a second thermal relay FR22 and a fan alternating current contactor KM2 are connected to the second eight-pin miniature relay K12 in series, a second thermal relay FR21, a second fan alternating current contactor KM21 and a second fan operation indicator lamp HL red are connected to the second thermal relay FR21 and the fan alternating current contactor KM2 in parallel, a second fan alternating current contactor KM22 and a second fan operation indicator lamp HL green are connected to the fan alternating current contactor KM2 in parallel, an audible and visual alarm BL is connected to the first fan operation indicator lamp HL red in parallel, and the audible and visual alarm BL is further connected to the second fan alternating current contactor KM21 and the second fan operation indicator lamp HL red in parallel.
Preferably, the water tank is further included, a stainless steel water temperature probe is arranged in the water tank, and a shielding sensing wire is connected to the stainless steel water temperature probe.
Preferably, the temperature controller KC adopts an EW-181 temperature controller.
Compared with the prior art, the invention has the beneficial effects that: the cooling tower water temperature controller can accurately control the water temperature of the cooling tower, no matter the day or the night, no matter the spring, the summer, the autumn and the winter, and the set temperature is about how many degrees; the water temperature is reduced in summer, and the ice cannot be frozen in winter, so that the effects of saving electricity and energy can be achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of the present invention.
FIG. 2 is a schematic diagram of a structure of a stainless steel water temperature probe according to the present invention for sensing water temperature.
In the figure: 1. a water tank; 2. a stainless steel water temperature probe; 3. the sensing line is shielded.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1-2, in the embodiment of the present invention, a cooling tower water temperature control apparatus includes a first fan and a second fan, both the first fan and the second fan are connected to a main power leakage switch MFB, the main power leakage switch MFB is connected to a fuse FU, the fuse FU is connected to a power switch S1, the power switch S1 is connected to a power indicator HL green, a second-gear instruction switch S2, a first eight-pin mini-relay K11 and a first eight-pin mini-relay K12, an automatic end of the second-gear instruction switch S2 is connected to a temperature controller KC, a constant end of the second-gear instruction switch S2 is connected to an eight-pin mini-relay K1, a switch KC is connected between the automatic end of the second-gear instruction switch S2 and the eight-pin mini-relay K1, the first eight-pin mini-relay K11 is connected in series to a first thermal FR11 and a fan ac contactor KM1, the first thermal relay FR11 and the fan alternating current contactor KM1 are connected in parallel with a first thermal relay FR12, a first fan alternating current contactor KM12 and a first fan operation indicator lamp HL red, the fan alternating current contactor KM1 is connected in parallel with a first fan alternating current contactor KM11 and a first fan operation indicator lamp HL green, a second thermal relay FR22 and a fan AC contactor KM2 are connected in series on the second eight-pin miniature relay K12, a second thermal relay FR21, a second fan alternating current contactor KM21 and a second fan operation indicator HL red are connected in parallel on the second thermal relay FR21 and the fan alternating current contactor KM2, a second fan alternating current contactor KM22 and a second fan operation indicator HL green are connected in parallel on the fan alternating current contactor KM2, an audible and visual alarm BL is connected in parallel on the first fan alternating current contactor KM12 and the first fan operation indicator HL in red, and the audible and visual alarm BL is connected in parallel with a second fan alternating current contactor KM21 and a second fan operation indicator HL red.
Preferably, still include water tank 1, be provided with stainless steel temperature probe 3 in the water tank 1, be connected with shielding sensing wire 2 on the stainless steel temperature probe 3.
Preferably, the temperature controller KC adopts an EW-181 temperature controller.
The second gear instruction change-over switch S2 rotates to be automatic, the temperature controller KC is electrified to work and displays the current actual water temperature, when the water temperature is 1 ℃ higher than the set temperature of the temperature controller KC, the normally open output point of the switch KC is closed and conducted, and the eight-pin small relay K1 is controlled to be electrified and attracted; two groups of normally-on points (respectively controlling a first fan and a second fan) of a first eight-pin miniature relay K11 and a second eight-pin miniature relay K12 are switched on and off, power is transmitted to 1 through a normally-off point of a first thermal relay FR11 of the first fan, a second thermal relay FR21 of the first thermal relay FR12 and a normally-off point of a second thermal relay FR22, and the power is transmitted to a fan alternating current contactor KM1 of the first fan and a fan alternating current contactor KM2 of the second fan, the first fan alternating current contactor KM11, the first fan alternating current contactor KM12, the second fan alternating current contactor KM21 and the second fan alternating current contactor KM22 to be powered and sucked, the first fan and the second fan work, and meanwhile, two green indicator lamps (a first fan operation indicator lamp HL green and a second fan operation indicator lamp HL green in a circuit principle diagram) on a panel of the control box are turned on to represent normal operation, and are in a cooling state at present; when the temperature is reduced to a set temperature, the output point of the temperature controller KC is released and disconnected, the power supply relay is controlled to lose power, two groups of normally open points of the relay are restored, the first fan alternating current contactor KM11, the first fan alternating current contactor KM12, the second fan alternating current contactor KM21 and the second fan alternating current contactor KM22 lose power, the first fan and the second fan stop working, and a first fan operation indicator lamp HL green and a second fan operation indicator lamp HL green on a panel of the control box are turned off; when one fan is in phase failure or overload in the running process of the fan, a thermal relay of the fan works to force the fan to stop running and send out acousto-optic alarm; for example, when the first fan has a fault, the first thermal relay FR11 and the first thermal relay FR12 which are responsible for protecting the first fan disconnect the original normally closed point on one hand, the first fan contactor loses power, the fan stops working to play a role of protecting the motor, and the first fan operation indicator lamp HL on the panel of the control box turns off in a green mode; on the other hand, the original normally open point is closed and conducted to the normally closed point of the contactor KM1 to send red power to the first fan operation indicator lamp HL for lighting, and meanwhile, the audible and visual alarm BL works to send out a flood alarm sound;
the second-gear instruction change-over switch S2 rotates to be in a normal state, the control power supply relay K1 is always electrified and attracted under the normal-state instruction of the second-gear instruction change-over switch S2, two groups of normal opening points of the control power supply relay are conducted to supply power to the first fan alternating current contactor KM11, the first fan alternating current contactor KM12, the second fan alternating current contactor KM21 and the second fan alternating current contactor KM22, and the two fans are not controlled by the temperature controller, so that the two fans cannot work because the temperature controller does not obtain power supply; the indication of the steady state is generally used in the case that the temperature controller is abnormal and the production task is urgent.
The working principle of the invention is as follows: the second gear instruction change-over switch S2 rotates to be automatic, the temperature controller KC is electrified to work and displays the current actual water temperature, when the water temperature is 1 ℃ higher than the set temperature of the temperature controller KC, the normally open output point of the switch KC is closed and conducted, and the eight-pin small relay K1 is controlled to be electrified and attracted; two groups of normally-on points (respectively controlling a first fan and a second fan) of a first eight-pin miniature relay K11 and a second eight-pin miniature relay K12 are switched on and off, power is transmitted to 1 through a normally-off point of a first thermal relay FR11 of the first fan, a second thermal relay FR21 of the first thermal relay FR12 and a normally-off point of a second thermal relay FR22, and the power is transmitted to a fan alternating current contactor KM1 of the first fan and a fan alternating current contactor KM2 of the second fan, the first fan alternating current contactor KM11, the first fan alternating current contactor KM12, the second fan alternating current contactor KM21 and the second fan alternating current contactor KM22 to be powered and sucked, the first fan and the second fan work, and meanwhile, two green indicator lamps (a first fan operation indicator lamp HL green and a second fan operation indicator lamp HL green in a circuit principle diagram) on a panel of the control box are turned on to represent normal operation, and are in a cooling state at present; when the temperature is reduced to a set temperature, the output point of the temperature controller KC is released and disconnected, the power supply relay is controlled to lose power, two groups of normally open points of the relay are restored, the first fan alternating current contactor KM11, the first fan alternating current contactor KM12, the second fan alternating current contactor KM21 and the second fan alternating current contactor KM22 lose power, the first fan and the second fan stop working, and a first fan operation indicator lamp HL green and a second fan operation indicator lamp HL green on a panel of the control box are turned off; when one fan is in phase failure or overload in the running process of the fan, a thermal relay of the fan works to force the fan to stop running and send out acousto-optic alarm; for example, when the first fan has a fault, the first thermal relay FR11 and the first thermal relay FR12 which are responsible for protecting the first fan disconnect the original normally closed point on one hand, the first fan contactor loses power, the fan stops working to play a role of protecting the motor, and the first fan operation indicator lamp HL on the panel of the control box turns off in a green mode; on the other hand, the original normally open point is closed and conducted to the normally closed point of the contactor KM1 to send red power to the first fan operation indicator lamp HL for lighting, and meanwhile, the audible and visual alarm BL works to send out a flood alarm sound;
the second-gear instruction change-over switch S2 rotates to be in a normal state, the control power supply relay K1 is always electrified and attracted under the normal-state instruction of the second-gear instruction change-over switch S2, two groups of normal opening points of the control power supply relay are conducted to supply power to the first fan alternating current contactor KM11, the first fan alternating current contactor KM12, the second fan alternating current contactor KM21 and the second fan alternating current contactor KM22, and the two fans are not controlled by the temperature controller, so that the two fans cannot work because the temperature controller does not obtain power supply; the indication of the steady state is generally used in the case that the temperature controller is abnormal and the production task is urgent.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a cooling tower temperature control device, includes first fan and second fan, its characterized in that: the first fan and the second fan are both connected with a main power supply leakage switch MFB, the main power supply leakage switch MFB is connected with a fuse FU, the fuse FU is connected with a power supply switch S1, the power supply switch S1 is respectively connected with a power supply indicator lamp HL green, a second-gear instruction change-over switch S2, a first eight-pin small relay K11 and a first eight-pin small relay K12, the automatic end of the second-gear instruction change-over switch S2 is connected with a temperature controller KC, the normal end of the second-gear instruction change-over switch S2 is connected with an eight-pin small relay K1, a switch KC is connected between the automatic end of the second-gear instruction change-over switch S2 and the eight-pin small relay K1, the first eight-pin small relay K11 is connected with a first thermal relay FR11 and a fan alternating current contactor KM1 in series, the first thermal relay FR11 and the fan alternating current contactor KM1 are connected with a first thermal relay FR12, a first fan alternating current contactor KM12 and a first fan operation indicator lamp HL 12 in parallel, a first fan alternating current contactor KM11 and a first fan operation indicator lamp HL green are connected in parallel on the fan alternating current contactor KM1, a second heat relay FR22 and a fan alternating current contactor KM2 are connected in series on the second eight-pin miniature relay K12, a second heat relay FR21, a second fan alternating current contactor KM21 and a second fan operation indicator lamp HL red are connected in parallel on the second heat relay FR21 and the fan alternating current contactor KM2, a second fan alternating current contactor KM22 and a second fan operation indicator lamp HL green are connected in parallel on the fan alternating current contactor KM2, an audible and visual alarm BL is connected in parallel on the first fan alternating current contactor KM12 and the first fan operation indicator lamp HL red, and the audible and visual alarm BL is also connected in parallel with the second fan alternating current contactor KM21 and the second fan operation indicator lamp HL red.
2. A cooling tower water temperature control apparatus as claimed in claim 1, wherein: the water tank is characterized by further comprising a water tank (1), wherein a stainless steel water temperature probe (3) is arranged in the water tank (1), and a shielding sensing wire (2) is connected to the stainless steel water temperature probe (3).
3. A cooling tower water temperature control apparatus as claimed in claim 1, wherein: the temperature controller KC adopts an EW-181 temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110820153.0A CN113589859B (en) | 2021-07-20 | 2021-07-20 | Cooling tower water temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110820153.0A CN113589859B (en) | 2021-07-20 | 2021-07-20 | Cooling tower water temperature control device |
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| Publication Number | Publication Date |
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| CN113589859A true CN113589859A (en) | 2021-11-02 |
| CN113589859B CN113589859B (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110820153.0A Active CN113589859B (en) | 2021-07-20 | 2021-07-20 | Cooling tower water temperature control device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201991755U (en) * | 2011-03-18 | 2011-09-28 | 长乐恒申合纤科技有限公司 | Temperature controlling device for cooling water of air compressor |
| CN202326333U (en) * | 2011-11-15 | 2012-07-11 | 深圳市紫衡技术有限公司 | Fan control circuit for central air-conditioning cooling tower |
| CN205377443U (en) * | 2016-01-13 | 2016-07-06 | 国家电网公司 | Cooling tower fan electrical power generating system |
| CN207715419U (en) * | 2017-09-08 | 2018-08-10 | 长沙申大科技集团股份有限公司 | A kind of control device of water tower cooling blower |
| CN212778842U (en) * | 2020-06-24 | 2021-03-23 | 河南豫光锌业有限公司 | Electric control system for interlocking liquid delivery pump and cooling tower fan |
-
2021
- 2021-07-20 CN CN202110820153.0A patent/CN113589859B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201991755U (en) * | 2011-03-18 | 2011-09-28 | 长乐恒申合纤科技有限公司 | Temperature controlling device for cooling water of air compressor |
| CN202326333U (en) * | 2011-11-15 | 2012-07-11 | 深圳市紫衡技术有限公司 | Fan control circuit for central air-conditioning cooling tower |
| CN205377443U (en) * | 2016-01-13 | 2016-07-06 | 国家电网公司 | Cooling tower fan electrical power generating system |
| CN207715419U (en) * | 2017-09-08 | 2018-08-10 | 长沙申大科技集团股份有限公司 | A kind of control device of water tower cooling blower |
| CN212778842U (en) * | 2020-06-24 | 2021-03-23 | 河南豫光锌业有限公司 | Electric control system for interlocking liquid delivery pump and cooling tower fan |
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| Publication number | Publication date |
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| CN113589859B (en) | 2022-08-09 |
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