CN211345454U - Automatic temperature control device of heat exchange unit - Google Patents
Automatic temperature control device of heat exchange unit Download PDFInfo
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- CN211345454U CN211345454U CN201922472951.XU CN201922472951U CN211345454U CN 211345454 U CN211345454 U CN 211345454U CN 201922472951 U CN201922472951 U CN 201922472951U CN 211345454 U CN211345454 U CN 211345454U
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Abstract
The utility model discloses an automatic temperature control device of a heat exchanger unit, which comprises the heat exchanger unit, a PLC control box electrically connected with the heat exchanger unit, and a temperature control device in communication connection with the PLC control box; a secondary water supply pipeline of the secondary network circulating pipeline is connected with a secondary water return pipeline through a high-temperature water supply branch pipe and a low-temperature water supply branch pipe; the primary water supply pipeline is connected with the high-temperature water supply branch pipe through a primary water supply branch pipe connected with a high-temperature water supply pump with a frequency converter; the water outlet end of the water storage tank is connected with the low-temperature water supply branch pipe through a water replenishing branch pipeline connected with a low-temperature water supply pump with a frequency converter; the temperature control device comprises a heat supply quantity adjusting unit arranged on a primary network circulating pipeline and a heat outlet quantity adjusting unit arranged on a secondary network circulating pipeline; the utility model discloses a heat exchanger unit automatic temperature control device can realize the circulation heat supply of high temperature with the thermal equipment and low temperature with the thermal equipment respectively.
Description
Technical Field
The utility model relates to a heat exchanger unit temperature regulating device, concretely relates to heat exchanger unit automatic temperature regulating device belongs to heat exchanger technical field.
Background
The heat exchange unit is an important device in a heat supply system, is usually arranged in a heat exchange station and is responsible for exchanging heat of primary network circulation to secondary network circulation water to supply heat for users. The intelligent heat exchanger set in the prior art is mostly composed of a heat exchanger, a circulating pump, a water replenishing pump, a set pipeline, a valve, a temperature transmitter, a pressure transmitter, an intelligent controller, a primary network water supply electric regulating valve and the like, and the heat exchanger set can be used as equipment for providing heat (cold) required by heat (cold) loads of various buildings, such as heat supply, ventilation, air conditioning, production, life and the like.
When in heat supply, the circulating hot water is driven by the circulating pump to enter the heat utilization equipment or the heat utilization facility through the pipeline, and the heat exchange and the heat transfer are generated in the heat utilization equipment or the heat utilization facility in a circulating mode. For a long time, the temperature adjustment of a heating system is manually operated by experienced workers by means of a traditional temperature meter and a steam valve. The heat supply system is a multivariable system, the circulating hot water is consumed by heat in heat equipment or heat utilization facilities, heat loss in a conveying pipeline exists, the heat supply temperature is influenced by the temperature of the circulating hot water and the temperature of the external environment, manual operation has great uncertainty, the heat supply temperature of the heat supply system is difficult to effectively control, and particularly, different heat supply cannot be carried out according to the daily work and life law of residents or the temperature required by the heat equipment; these factors cause the heating system to be in the operation state of large heating temperature error, high consumption of high-temperature hot water/heating steam or circulating hot water and low thermal efficiency for a long time, which wastes energy and causes many adverse effects on the life of residents. Therefore, in order to solve the above problems, it is necessary to design an automatic temperature control device for a heat exchanger unit.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a heat exchanger unit automatic temperature control device not only can satisfy the user demand, still can carry out flow control according to the time quantum, suitably reduces the heat source supply at the time of with hot peak for heat exchanger unit is more energy-conserving when the heat supply.
The utility model discloses an automatic temperature control device of a heat exchange unit, which comprises the heat exchange unit, a PLC control box electrically connected with the heat exchange unit, and a temperature control device in communication connection with the PLC control box; the heat exchange unit is arranged between the primary network circulation pipeline and the secondary network circulation pipeline and is respectively connected with a primary water supply pipeline and a primary water return pipeline of the primary network circulation pipeline and a secondary water supply pipeline and a secondary water return pipeline of the secondary network circulation pipeline; a secondary water return pipeline of the secondary network circulating pipeline is connected with a water replenishing pipeline; the other end of the water supplementing pipeline is connected with a water storage tank provided with a water level transmitter; a circulating pump with a frequency converter is arranged on the secondary water return pipeline; a water replenishing pump with a frequency converter is arranged on the water replenishing pipeline; the signal input ends of the frequency converter of the circulating pump and the frequency converter of the water replenishing pump are respectively and electrically connected with the PLC control box;
a secondary water supply pipeline of the secondary network circulating pipeline is connected with a secondary water return pipeline through a high-temperature water supply branch pipe and a low-temperature water supply branch pipe, and the high-temperature water supply branch pipe and the low-temperature water supply branch pipe are arranged between the secondary water supply pipeline and the secondary water return pipeline in parallel; the primary water supply pipeline is connected with the high-temperature water supply branch pipe through a primary water supply branch pipe connected with a high-temperature water supply pump with a frequency converter; the water outlet end of the water storage tank is connected with the low-temperature water supply branch pipe through a water replenishing branch pipeline connected with a low-temperature water supply pump with a frequency converter; the signal input ends of the frequency converter of the high-temperature water supply pump and the frequency converter of the low-temperature water supply pump are respectively and electrically connected with the PLC control box;
the temperature control device comprises a heat supply quantity adjusting unit arranged on a primary network circulating pipeline and a heat outlet quantity adjusting unit arranged on a secondary network circulating pipeline; the heating load adjusting unit and the heat output adjusting unit are respectively connected with the PLC control box in an electric control way;
the heat supply regulating unit consists of a primary temperature transmitter and an electromagnetic regulating valve which are arranged on a primary water supply pipeline; the heat output adjusting unit comprises a secondary temperature transmitter arranged on a secondary water supply pipeline, a high-temperature transmitter and a high-temperature electromagnetic adjusting valve which are arranged on a high-temperature water supply branch pipe, and a low-temperature transmitter and a low-temperature electromagnetic adjusting valve which are arranged on a low-temperature water supply branch pipe.
Furthermore, the water inlet end and the water outlet end of the water replenishing pump are respectively connected with the water storage tank and the secondary water return pipeline through water replenishing pipelines, and a first switch valve is arranged on the water replenishing pipeline connected with the water inlet end of the water replenishing pump; the water inlet end and the water outlet end of the high-temperature water supply pump are respectively connected with the primary water supply pipeline and the high-temperature water supply branch pipe through a primary water supply branch pipe, and a second switch valve is arranged on the primary water supply branch pipe connected with the water inlet end of the high-temperature water supply pump; the water inlet end and the water outlet end of the low-temperature water supply pump are respectively connected with the water storage tank and the low-temperature water supply branch pipe through water replenishing branch pipes, and a third switch valve is arranged on the water replenishing branch pipe connected with the water inlet end of the low-temperature water supply pump; the first switch valve, the second switch valve and the third switch valve are respectively electrically connected with the PLC control box.
Furthermore, the heat exchanger unit is also connected with an outdoor temperature transmitter for detecting the outdoor temperature; outdoor temperature transmitter and PLC control the automatically controlled connection of case, outdoor temperature transmitter is used for measuring outdoor temperature to convert the temperature signal who detects into digital signal transmission and carry out analysis and processing in PLC controls the case, thereby in time adjust the water supply temperature according to outdoor temperature change, ensure that the water supply temperature is suitable, effectively avoid the energy extravagant moreover.
As a preferred embodiment, the device also comprises an audible and visual alarm for alarming the abnormal heat temperature; audible-visual annunciator passes through PLC control box and goes out the heat regulating unit communication and be connected, when going out the hot temperature appearance unusual, when the temperature that secondary temperature derailleur A, high temperature transmitter or low temperature transmitter detected appears unusual promptly, audible-visual annunciator sent out the police dispatch newspaper, reminds operating personnel to overhaul.
Furthermore, the PLC control box is in communication connection with an upper computer through a wireless module, the PLC control box is in communication connection with the upper computer through the wireless module, and detection data are transmitted to the upper computer through the wireless module to be stored, so that the detection data are convenient for an operator to check; the upper computer can be an industrial control computer in the prior art.
Still further, the PLC control box is composed of a PLC controller and a minimum control unit thereof.
Compared with the prior art, the automatic temperature control device of the heat exchange unit can respectively realize the circulating heat supply of high-temperature heat equipment and low-temperature heat equipment; the heat exchanger unit not only can meet different requirements of users, but also can adjust the flow according to time periods, and properly reduces heat source supply in the heat consumption peak period, so that the heat exchanger unit is more energy-saving in heat supply.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of the overall control structure of embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of the overall control structure of embodiment 2 of the present invention.
The components in the drawings are labeled as: 1-a heat exchanger unit, 2-a PLC control box, 3-a primary water supply line, 4-a primary water return line, 5-a secondary water supply line, 6-a secondary water return line, 7-a water replenishing line, 8-a circulating pump, 9-a water replenishing pump, 10-a high-temperature water supply branch pipe, 11-a low-temperature water supply branch pipe, 12-a high-temperature water supply pump, 13-a primary water supply branch pipe, 14-a low-temperature water supply pump, 15-a water replenishing branch line, 16-a primary temperature transmitter, 17-an electromagnetic regulating valve, 18-a secondary temperature transmitter, 19-a high-temperature transmitter, 20-a high-temperature electromagnetic regulating valve, 21-a low-temperature transmitter, 22-a low-temperature electromagnetic regulating valve, 23-a first switching valve, 24-a second switching valve, 25-a third switching, 26-outdoor temperature transmitter, 27-audible and visual alarm, 28-upper computer, 29-high temperature heat equipment and 30-low temperature heat equipment.
Detailed Description
Example 1:
as shown in fig. 1 and 2, the automatic temperature control device for a heat exchanger unit of the present invention comprises a heat exchanger unit 1, a PLC control box 2 electrically connected to the heat exchanger unit 1, and a temperature control device communicatively connected to the PLC control box 2; the heat exchange unit 1 is arranged between a primary network circulation pipeline and a secondary network circulation pipeline, and the heat exchange unit 1 is respectively connected with a primary water supply pipeline 3 and a primary water return pipeline 4 of the primary network circulation pipeline and a secondary water supply pipeline 5 and a secondary water return pipeline 6 of the secondary network circulation pipeline; a secondary water return pipeline 6 of the secondary network circulating pipeline is connected with a water replenishing pipeline 7; the other end of the water replenishing pipeline 7 is connected with a water storage tank (not shown) provided with a water level transmitter; a circulating pump 8 with a frequency converter is arranged on the secondary water return pipeline 6; a water replenishing pump 9 with a frequency converter is arranged on the water replenishing pipeline 7; the signal input ends of the frequency converter of the circulating pump 9 and the frequency converter of the water replenishing pump 9 are respectively electrically connected with the PLC control box 2;
a secondary water supply pipeline 5 of the secondary network circulating pipeline is connected with a secondary water return pipeline 6 through a high-temperature water supply branch pipe 10 and a low-temperature water supply branch pipe 11, and the high-temperature water supply branch pipe 10 and the low-temperature water supply branch pipe 11 are arranged between the secondary water supply pipeline 5 and the secondary water return pipeline 6 in parallel; the primary water supply pipeline 3 is connected with a high-temperature water supply branch pipe 10 through a primary water supply branch pipe 13 connected with a high-temperature water supply pump 12 with a frequency converter; the water outlet end of the water storage tank is connected with the low-temperature water supply branch pipe 11 through a water replenishing branch pipeline 15 connected with a low-temperature water supply pump 14 with a frequency converter; the signal input ends of the frequency converter of the high-temperature water supply pump 12 and the frequency converter of the low-temperature water supply pump 14 are respectively and electrically connected with the PLC control box 2;
the temperature control device comprises a heat supply quantity adjusting unit arranged on a primary network circulating pipeline and a heat outlet quantity adjusting unit arranged on a secondary network circulating pipeline; the heating load adjusting unit and the heat output adjusting unit are respectively connected with the PLC control box 2 in an electric control way;
the heating load adjusting unit consists of a primary temperature transmitter 16 and an electromagnetic adjusting valve 17 which are arranged on the primary water supply pipeline 3; the heat output adjusting unit comprises a secondary temperature transmitter 18 arranged on the secondary water supply pipeline 5, a high temperature transmitter 19 and a high temperature electromagnetic adjusting valve 20 arranged on the high temperature water supply branch pipe 10, and a low temperature transmitter 21 and a low temperature electromagnetic adjusting valve 22 arranged on the low temperature water supply branch pipe 11.
The water inlet end and the water outlet end of the water replenishing pump 9 are respectively connected with the water storage tank and the secondary water return pipeline 6 through a water replenishing pipeline 7, and a first switch valve 23 is arranged on the water replenishing pipeline 7 connected with the water inlet end of the water replenishing pump 9;
the water inlet end and the water outlet end of the high-temperature water supply pump 12 are respectively connected with the primary water supply pipeline 3 and the high-temperature water supply branch pipe 10 through a primary water supply branch pipe 13, and the primary water supply branch pipe 13 connected with the water inlet end of the high-temperature water supply pump 12 is provided with a second switch valve 24;
the water inlet end and the water outlet end of the low-temperature water supply pump 14 are respectively connected with the water storage tank and the low-temperature water supply branch pipe 11 through a water replenishing branch pipe 15, and a third switch valve 25 is arranged on the water replenishing branch pipe 15 connected with the water inlet end of the low-temperature water supply pump;
the first switch valve 23, the second switch valve 24 and the third switch valve 25 are electrically connected to the PLC control box 2, respectively.
The heat exchanger unit 1 is also connected with an outdoor temperature transmitter 26 for detecting outdoor temperature; the outdoor temperature transmitter 26 is electrically controlled and connected with the PLC control box 2.
The PLC control box 2 is composed of a PLC controller and a minimum control unit thereof.
Example 2:
as shown in fig. 3, the structure of the automatic temperature control device of the heat exchanger unit of the present invention is basically the same as that of embodiment 1, wherein the device further comprises an audible and visual alarm 27 for alarming abnormal heat output temperature; and the audible and visual alarm 27 is in communication connection with the heat output adjusting unit through the PLC control box 2. The PLC control box 2 is in communication connection with an upper computer 28 through a wireless module.
The utility model discloses an automatic temperature control device of heat exchanger group, during the heat supply, high temperature hot water or heating steam pass through heat exchanger group heating circulating water, the circulating hot water after the heat exchange of heat exchanger group is carried to high temperature water supply branch pipe and low temperature water supply branch pipe respectively through the secondary water supply line under the drive of circulating pump, get into corresponding high temperature with heat equipment 29 and low temperature with heat equipment 30 by high temperature water supply branch pipe and low temperature water supply branch pipe and produce heat exchange and heat transfer, and carry back to the heat exchanger group under the drive of secondary return water line and circulating pump, realize the circulation heat supply of high temperature with heat equipment and low temperature with heat equipment;
specifically, high-temperature hot water is conveyed into the heat exchange unit through a primary water supply pipeline of a primary network circulation pipeline, an electromagnetic regulating valve for regulating the supply amount of the high-temperature hot water is arranged on the primary water supply pipeline, and the opening degree of the electromagnetic regulating valve can be regulated according to the heat supply requirement of a secondary network circulation pipeline; the high-temperature hot water heats circulating water through the heat exchange unit, a secondary temperature transmitter is arranged on a secondary water supply pipeline of a secondary network circulating pipeline and used for detecting the temperature of the circulating hot water entering the secondary water supply pipeline after heat exchange, converting a detected temperature signal into a digital signal and transmitting the digital signal to a PLC control box for analysis and processing, comparing the digital signal with a preset average temperature, and if the detected temperature is higher than the set average temperature, controlling and adjusting the opening degree of an electromagnetic regulating valve by the PLC control box to reduce the opening degree of the electromagnetic regulating valve; if the detected temperature is lower than the set average temperature, the opening of the electromagnetic regulating valve is controlled and adjusted by the PLC control box, and the opening of the electromagnetic regulating valve is increased;
when the hot water required by the high-temperature heat equipment 29 is supplied, the PLC control box controls and opens the second switch valve and the high-temperature water supply pump on the primary water supply branch pipe, so that the high-temperature hot water can be conveyed to the high-temperature water supply branch pipe through the primary water supply branch pipe under the pumping action of the high-temperature water supply pump and conveyed to the high-temperature heat equipment for use through the high-temperature water supply branch pipe; meanwhile, the high-temperature transmitter detects the temperature of circulating hot water in the high-temperature water supply branch pipe, converts a detected temperature signal into a digital signal and transmits the digital signal to the PLC control box for analysis and processing, the digital signal is compared with a preset high-temperature, and if the detected temperature is higher than the set high-temperature, the PLC control box controls and adjusts a frequency converter of the high-temperature water supply pump to reduce the supply amount of the high-temperature hot water; if the detected temperature is lower than the set high-temperature, the PLC control box controls and adjusts a frequency converter of the high-temperature water supply pump to increase the supply amount of high-temperature hot water;
when hot water required by the low-temperature heat utilization equipment 30 is supplied, the PLC control box controls to open the third switch valve and the low-temperature water supply pump on the water supply branch pipeline, so that the low-temperature cold water in the water storage tank can be conveyed to the low-temperature water supply branch pipeline through the water supply branch pipeline under the pumping action of the low-temperature water supply pump and is conveyed to the low-temperature heat utilization equipment through the low-temperature water supply branch pipeline for use; meanwhile, a low-temperature transmitter detects the temperature of circulating hot water in the low-temperature water supply branch pipe, converts a detected temperature signal into a digital signal, transmits the digital signal to a PLC control box for analysis and processing, compares the digital signal with a preset low-temperature, and controls and adjusts a frequency converter of a low-temperature water supply pump by the PLC control box to increase the supply amount of low-temperature cold water if the detected temperature is higher than the set high-temperature; if the detected temperature is lower than the set low-temperature, the PLC control box controls and adjusts a frequency converter of the low-temperature water supply pump to reduce the supply amount of low-temperature cold water;
in addition, the high-temperature electromagnetic regulating valve and the low-temperature electromagnetic regulating valve are respectively arranged on the high-temperature water supply branch pipe and the low-temperature water supply branch pipe, and the opening degrees of the high-temperature electromagnetic regulating valve and the low-temperature electromagnetic regulating valve can be respectively regulated according to the heat consumption peak period and the heat consumption peak period so as to meet different heat supply requirements in different time periods; the heat exchanger unit not only can meet the requirements of users, but also can adjust the flow according to the time period, and properly reduces the heat source supply in the heat consumption peak period, so that the heat exchanger unit is more energy-saving in heat supply.
Still respectively install a flow transmitter and pressure transmitter that are connected with the PLC control box electricity on primary water supply pipeline, secondary return water pipeline, high temperature water supply branch pipe, low temperature water supply branch pipe, moisturizing pipeline, primary water supply branch pipe and the moisturizing branch pipe for detect the liquid flow and the pipeline internal pressure in each pipeline, guarantee that the liquid in the pipeline can carry safely.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (6)
1. An automatic temperature control device of a heat exchange unit comprises the heat exchange unit, a PLC control box electrically connected with the heat exchange unit, and a temperature control device in communication connection with the PLC control box; the heat exchange unit is arranged between the primary network circulation pipeline and the secondary network circulation pipeline and is respectively connected with a primary water supply pipeline and a primary water return pipeline of the primary network circulation pipeline and a secondary water supply pipeline and a secondary water return pipeline of the secondary network circulation pipeline; a secondary water return pipeline of the secondary network circulating pipeline is connected with a water replenishing pipeline; the other end of the water supplementing pipeline is connected with a water storage tank provided with a water level transmitter; a circulating pump with a frequency converter is arranged on the secondary water return pipeline; a water replenishing pump with a frequency converter is arranged on the water replenishing pipeline; the signal input ends of the frequency converter of the circulating pump and the frequency converter of the water replenishing pump are respectively and electrically connected with the PLC control box; the method is characterized in that:
a secondary water supply pipeline of the secondary network circulating pipeline is connected with a secondary water return pipeline through a high-temperature water supply branch pipe and a low-temperature water supply branch pipe, and the high-temperature water supply branch pipe and the low-temperature water supply branch pipe are arranged between the secondary water supply pipeline and the secondary water return pipeline in parallel; the primary water supply pipeline is connected with the high-temperature water supply branch pipe through a primary water supply branch pipe connected with a high-temperature water supply pump with a frequency converter; the water outlet end of the water storage tank is connected with the low-temperature water supply branch pipe through a water replenishing branch pipeline connected with a low-temperature water supply pump with a frequency converter; the signal input ends of the frequency converter of the high-temperature water supply pump and the frequency converter of the low-temperature water supply pump are respectively and electrically connected with the PLC control box;
the temperature control device comprises a heat supply quantity adjusting unit arranged on a primary network circulating pipeline and a heat outlet quantity adjusting unit arranged on a secondary network circulating pipeline; the heating load adjusting unit and the heat output adjusting unit are respectively connected with the PLC control box in an electric control way;
the heat supply regulating unit consists of a primary temperature transmitter and an electromagnetic regulating valve which are arranged on a primary water supply pipeline; the heat output adjusting unit comprises a secondary temperature transmitter arranged on a secondary water supply pipeline, a high-temperature transmitter and a high-temperature electromagnetic adjusting valve which are arranged on a high-temperature water supply branch pipe, and a low-temperature transmitter and a low-temperature electromagnetic adjusting valve which are arranged on a low-temperature water supply branch pipe.
2. The automatic temperature control device of the heat exchanger unit according to claim 1, characterized in that: the water inlet end and the water outlet end of the water replenishing pump are respectively connected with the water storage tank and the secondary water return pipeline through water replenishing pipelines, and a first switch valve is arranged on the water replenishing pipeline connected with the water inlet end of the water replenishing pump;
the water inlet end and the water outlet end of the high-temperature water supply pump are respectively connected with the primary water supply pipeline and the high-temperature water supply branch pipe through a primary water supply branch pipe, and a second switch valve is arranged on the primary water supply branch pipe connected with the water inlet end of the high-temperature water supply pump;
the water inlet end and the water outlet end of the low-temperature water supply pump are respectively connected with the water storage tank and the low-temperature water supply branch pipe through water replenishing branch pipes, and a third switch valve is arranged on the water replenishing branch pipe connected with the water inlet end of the low-temperature water supply pump;
the first switch valve, the second switch valve and the third switch valve are respectively electrically connected with the PLC control box.
3. The automatic temperature control device of the heat exchanger unit according to claim 1, characterized in that: the heat exchanger unit is also connected with an outdoor temperature transmitter for detecting outdoor temperature; and the outdoor temperature transmitter is electrically connected with the PLC control box.
4. The automatic temperature control device of the heat exchanger unit according to claim 1, characterized in that: the alarm also comprises an audible and visual alarm for alarming abnormal heat output temperature; and the audible and visual alarm is in communication connection with the heat output adjusting unit through the PLC control box.
5. The automatic temperature control device of the heat exchanger unit according to claim 1, characterized in that: the PLC control box is in communication connection with the upper computer through a wireless module.
6. The automatic temperature control device of the heat exchanger unit according to any one of claims 1 to 5, characterized in that: the PLC control box is composed of a PLC controller and a minimum control unit thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922472951.XU CN211345454U (en) | 2019-12-31 | 2019-12-31 | Automatic temperature control device of heat exchange unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922472951.XU CN211345454U (en) | 2019-12-31 | 2019-12-31 | Automatic temperature control device of heat exchange unit |
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| Publication Number | Publication Date |
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| CN211345454U true CN211345454U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922472951.XU Active CN211345454U (en) | 2019-12-31 | 2019-12-31 | Automatic temperature control device of heat exchange unit |
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| Country | Link |
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| CN (1) | CN211345454U (en) |
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2019
- 2019-12-31 CN CN201922472951.XU patent/CN211345454U/en active Active
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