Injection water heating and cooling system capable of replacing steam and cooling water tower

Abstract

The utility model discloses an injection water heating and cooling system capable of replacing steam and a cooling water tower. The injection water heating and cooling system mainly comprises an air-cooled heat pump type module unit, a cold and hot water supply pump set, a differential pressure bypass automatic valve set, a double-tube-plate heat exchanger set, an injection water circulation pipeline and a PLC integrated automatic control system. According to the system, cold and heat sources are provided through the air-cooled heat pump type module unit, pipeline pressure is adjusted through the cold and hot water supply water pump set, and cold and heat exchange is achieved through the double-tube-plate heat exchanger. The PLC integrated automatic control system monitors temperature, pressure and flow parameters in real time, and controls circulation of water for injection through an automatic switching valve and an automatic regulating valve, so that accurate regulation of different temperature requirements is realized. The system can automatically switch a refrigerating mode and a heating mode, supports adjustment of different temperatures of local water consumption points and the whole pipe network, and optimizes energy utilization. Through integrated control and automatic operation, the operation stability and flexibility of the system are improved, and the system is suitable for the industries of medicines and foods requiring strict control of the water temperature.

Description

Technical Field

[0001] This utility model relates to a heating and cooling system for injection water that can replace steam and cooling water towers, and belongs to the field of cooling water tower cooling systems. Background Technology

[0002] Compared with traditional injection water circulation networks, traditional refrigeration and heating circulation systems, traditional large-volume infusion preparation systems, traditional process water circulation systems for research and development trials, and traditional steam and cooling tower-type heating and cooling systems, this invention has breakthroughs in the following functions.

[0003] The above traditional systems use steam heating, cooling tower cooling, and the entire injection water circulation network has the same temperature value. They cannot achieve different operating temperatures at local usage points compared to the entire injection water network, nor can they achieve the six operating modes. Utility Model Content

[0004] The purpose of this invention is to provide a heating and cooling system for injection water that can replace steam and cooling water towers, effectively solving the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] Including air-cooled heat pump modular units, which are used to provide a cold source or a heat source, including multiple air-cooled heat pump modules, each of which includes at least a compressor, a four-way valve, an evaporator, a condenser, a heating system, a flow control module, and a temperature and pressure control component;

[0007] A hot and cold water supply pump set, which includes at least two pumps, a pressure gauge, a check valve, and a Y-type filter, is used to provide pressure to the cooling and heating heat exchange circulation area and to operate at variable frequency according to the requirements of the cold and heat source by receiving instructions from the PLC control system.

[0008] The differential pressure bypass automatic valve assembly includes a differential pressure bypass automatic valve, a manual valve assembly, and a differential pressure gauge. It is used to ensure the pressure balance of the cold and heat source circulation system and prevent overpressure from occurring.

[0009] The dual tube sheet heat exchanger assembly is used to exchange heat between the cooling and heating heat exchange circulation zone and the injection water circulation zone to realize energy conversion and transfer;

[0010] The water-to-injection circulation pipeline includes automatic regulating valves, automatic on / off valves, and manual on / off valves, which are used to control the circulation, temperature regulation, and flow direction of the water-to-injection pipeline into and out of the heat exchanger.

[0011] The PLC integrated automatic control system is used to collect temperature, pressure, and flow data, and control air-cooled heat pump modules, water pumps, heat exchangers, and valve components to achieve automatic adjustment and stable operation of the system.

[0012] Furthermore, the PLC integrated automatic control system monitors the temperature and pressure in the pipeline in real time through temperature and pressure sensors, and performs PID adjustment according to the set values ​​to achieve variable frequency and stable voltage operation.

[0013] Furthermore, the system can be automatically controlled by a PLC to start and stop the air-cooled heat pump modules in stages, and dynamically adjust the number of modules to be turned on according to the cooling and heating load requirements.

[0014] Furthermore, the system uses a pressure sensor to detect the pressure data in the pipeline in real time, and uses a PLC for PID regulation to enable the water pump to operate with variable frequency and stable pressure.

[0015] Furthermore, the system uses a dual tube sheet heat exchanger group as the core heat exchange device to realize the switching between cooling and heating functions, and only one set of cold and heat source circulation pipe network is needed to complete the cold and heat exchange.

[0016] Furthermore, the system includes multiple automatic on / off valves and automatic regulating valves, and works in conjunction with temperature sensors to enable different temperatures for local water points and the overall pipe network.

[0017] Furthermore, the system can simultaneously provide injection water at different temperatures to multiple water points and coordinate the operation of various valves and heat exchangers through a PLC control system.

[0018] Furthermore, the system can store operational data, including temperature, pressure, and flow information, for users to query and adjust.

[0019] Furthermore, the system is equipped with a buzzer alarm, which will issue an alarm signal and prompt maintenance operations when the system malfunctions.

[0020] Furthermore, the system can achieve 6 operating modes, supporting automatic operation adjustment and PLC manual segmented control operation to meet the heating and cooling needs of different scenarios.

[0021] Mode 1: When the required temperature at a local water point is lower than the normal temperature, the system operates in cooling mode and cools the injection water through a heat exchanger.

[0022] Mode 2: When the required temperature at a local water point is higher than the normal temperature, the system operates in heating mode, heating the injection water through a heat exchanger.

[0023] Mode 3: When the required temperature at a local water point is equal to the normal temperature, the system stops supplying cold and heat sources and directly recycles the injection water in the pipeline network;

[0024] Mode 4: When the temperature of the entire injection water circulation network is lower than the normal temperature, the system operates in cooling mode, cooling the water in the network through a heat exchanger.

[0025] Mode 5: When the temperature of the entire injection water circulation network is higher than the normal temperature, the system operates in heating mode, and the water in the network is heated through the heat exchanger.

[0026] Mode 6: When the temperature of the entire injection water circulation network is equal to the normal temperature, stop the supply of cold and heat sources and only circulate the water.

[0027] Furthermore, the system has energy conversion and transmission functions, and through the coordinated work of each module, it maximizes the energy utilization of the cold and heat source and the injection water system.

[0028] Furthermore, this electrical control system is equipped with an air-cooled heat pump modular unit control system, a refrigeration and heating heat exchange circulation zone control system, an injection water circulation zone control system, one set of automatic regulating valve control, four sets of automatic on / off valve control, two sets of temperature sensor control, one set of pressure sensor control, a PLC integrated automatic control system, and an alarm controller system.

[0029] Furthermore, the air-cooled heat pump modular unit control system automatically reads data such as temperature, pressure, and flow rate within the system area, exchanges this data with the PLC integrated self-control system, and receives PLC commands to operate, sequentially turning on or off air-cooled heat pump modules 1-4. This achieves a logical operation of "more use, more operation; less use, less operation; no use, no operation" for cooling and heating capacity.

[0030] Furthermore, the hot and cold water supply pump sets and the refrigeration and heating heat exchange circulation zone control system automatically read data such as temperature, pressure, and flow rate within the zone system and exchange this data with the PLC integrated automatic control system. Upon receiving commands from the PLC, the system operates to start / stop the hot and cold water supply pump sets, activating one or two pumps to supply power to the refrigeration and heating heat exchange circulation zone control system.

[0031] Further, the injection water circulation zone control system consists of automatic regulating valves, automatic on / off valves, temperature sensors, flow sensors, etc. It automatically reads data such as temperature, pressure, and flow rate within the system zone and exchanges this data with the PLC-integrated automatic control system. Its function is to circulate injection water within the system and provide injection water at 40-90℃ to the water usage points, with the temperature being settable. The water can enter the double tube sheet heat exchanger through the automatic regulating valves and automatic on / off valves.

[0032] Furthermore, the PLC control system is responsible for collecting data and status information from various areas within the system and influencing automatic regulating valves, automatic switches, differential pressure bypass valve groups, dual-tube sheet heat exchanger groups, cold and heat source return circulation pipelines, and injection water circulation pipelines. This ensures the entire control system operates in automatic control mode, achieving its seven functional states. It also records, displays, and alarms related to running time, parameter adjustments, and equipment malfunctions.

[0033] Furthermore: a buzzer alarm is used to alert staff when abnormalities occur at each workstation.

[0034] Further: a pressure sensor is responsible for detecting pressure data within the circulation pipeline.

[0035] Further: a temperature sensor is responsible for detecting temperature data within the circulation pipeline.

[0036] Furthermore: Automatic regulating valve, responsible for realizing the valve state from 0-100% opening (realizing the valve opening size and thus controlling the flow rate of hot and cold water and injection water when passing through this valve).

[0037] Furthermore: an automatic on / off valve is responsible for opening and closing the valve, thereby controlling the flow of hot and cold water and injection water through this valve.

[0038] The beneficial effects are:

[0039] Compared with traditional injection water circulation networks, traditional refrigeration and heating circulation systems, traditional large-volume infusion preparation systems, traditional process water circulation systems for research and development trials, and traditional steam and cooling tower-type heating and cooling systems, this invention has breakthroughs in the following functions.

[0040] 1. This system can use water for injection with a wide temperature range of 40-90℃. This breaks through the limitations of traditional water for injection pipelines, which can only maintain a temperature of 70-80℃. The system allows for customization of the temperature to meet specific usage requirements.

[0041] 2. The heating and cooling system can maintain the injection water temperature in local injection water networks or local usage points within the entire injection water system at a customizable range of 40-90℃. This breaks through the traditional limitation where the water temperature in the entire injection water pipeline (at all usage points) is the same. It achieves a different water temperature in local networks or local water usage points compared to the overall network temperature (because traditional injection water circulation systems use a series supply and return water network with the same water temperature).

[0042] 3. This device enables the entire injection water network system to be heated and cooled simultaneously. This breaks through the limitations of traditional injection water network circulation systems, which can only function as heating or cooling systems. This device achieves integrated heating and cooling of the entire injection water circulation system, and can be customized according to water usage requirements. Furthermore, it enables precise temperature control via PLC automation.

[0043] 4. It can simultaneously provide localized heating and cooling to two or more water-using points within the entire injection water circulation system. This overcomes the limitations of traditional injection water pipeline circulation systems, which can only provide heating and cooling to one water-using point at a time. It enables the simultaneous supply of injection water at a specific temperature to two water-using points (this water temperature differs from the overall injection water circulation pipeline temperature).

[0044] 5. In terms of heat exchange, this system can switch between cooling and heating functions, and only one set of cold and heat source circulation pipe network is needed for the dual tube sheet heat exchanger group to use both cold and heat sources. This breaks through the traditional heat exchange mode, which requires two sets of equipment for preparing the cold source and two sets of heat exchange circulation pipe network (cold source circulation pipe network and heat source circulation pipe network). This device only requires one set of cold and heat source equipment (air-cooled / heat pump type modular unit) and one set of heat exchange circulation pipe network, saving one set of equipment and one set of heat exchange circulation pipe network compared to the traditional mode.

[0045] 6. Based on the set temperature of the water for injection, the entire system control system automatically determines and applies this control to the air-cooled / heat pump modular unit to automatically perform refrigeration or heating preparation, thereby providing a cold or heat source for the dual-tube sheet heat exchanger group to heat or cool the water for injection. This breaks through the traditional model, where boiler steam is needed for heating the water for injection and process cooling water is needed for cooling. This integrated unit achieves a "dual-purpose" function; the same device can both cool (replacing a cooling tower) and heat (replacing boiler steam). It can also be used in environments where steam or cooling water is unavailable at the water for injection application location.

[0046] 7. This device is an integrated control system. It can automatically adjust the pressure and temperature of the circulating system piping within the refrigeration and heating heat exchange circulation zone. This breaks through the traditional method of fixing temperature and pressure within the heat exchange circulation network, which results in the refrigeration and heating systems always being in a standby state, leading to waste of cold and heat energy. This system integrates the control of the "refrigeration and heating heat exchange circulation zone" and the "injection water circulation zone," monitoring and simultaneously controlling the operation of both zones to avoid energy waste caused by changes or deviations in the usage or operating data of one system. Attached Figure Description

[0047] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0048] Figure 1 This is a flowchart of the present invention; Detailed Implementation

[0049] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0050] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] Furthermore, the terms “first,” “second,” “third,” etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0052] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] See Figure 1 This invention provides an embodiment of a heating and cooling system for injectable water that can replace steam and cooling towers. The device comprises an air-cooled heat pump modular unit and a hot and cold water supply pump unit. The system includes a differential pressure bypass automatic valve group, a double tube sheet heat exchanger group, a cold / heat source return circulation pipeline, an automatic on / off valve, an automatic regulating valve, a Y-type filter, a pressure gauge, and a check valve, forming a refrigeration / heating heat exchange circulation zone system. The automatic regulating valve, automatic on / off valve, manual on / off valve, and injectable water circulation pipeline form the injectable water circulation zone system.

[0054] The air-cooled heat pump modular unit consists of four air-cooled heat pump modules. Each module comprises a compressor, a four-way valve, an evaporator, a condenser, a heating system, a flow control module, and temperature and pressure control components. Its function is to provide cold and heat sources to the cooling and heating heat exchange circulation zones. It receives commands from the centralized control system's PLC to switch between producing chilled and hot water. Furthermore, it automatically turns 1-4 air-cooled heat pump modules on or off depending on the required amount of cold and heat.

[0055] The hot and cold water supply pump set consists of two pumps, two pressure gauges, two check valves, and two Y-type filters. Its function is to provide pressure to the circulating pipelines in the cooling and heating heat exchange areas. It simultaneously receives commands from the centralized control system's PLC to operate at variable frequency, acting on pressure sensor 1. The pressure data is then used by the PLC for PID regulation to achieve variable frequency pressure stabilization. It can operate in a 1-on-1 standby mode or with both pumps running simultaneously (depending on the automatically controlled pipeline pressure), ensuring stable operation.

[0056] The differential pressure bypass automatic valve group consists of a differential pressure bypass automatic valve, a manual valve group, and a differential pressure gauge. Its function is to ensure that the pressure value of the circulating pipeline in the cooling and heating heat exchange circulation area is within the control range in the double tube sheet heat exchanger group, the air-cooled heat pump type modular unit pump, and the circulating pipeline. When either the supply water pipeline or the return water pipeline is overpressurized, it will automatically release its pressure to balance the pressure of the two pipelines.

[0057] The system consists of a double-tube sheet heat exchanger assembly, a cold / heat source return circulation pipeline, an automatic regulating valve, and an automatic on / off valve. This device transfers heat from the cold and heat sources in the refrigeration / heating heat exchange circulation zone to the injection water circulation zone, thus achieving energy conversion and transmission.

[0058] The water-to-injection circulation system consists of automatic regulating valves, automatic on / off valves, manual on / off valves, and water-to-injection circulation pipelines. Its function is to circulate water for injection within the system and provide water for injection at temperatures ranging from 40-90°C to the points of use; the temperature can be set.

[0059] Automatic regulating valves 1 / 2, automatic switching valves 1 / 2 / 4, and manual switching valve 1 at the water point enable the injection water in the pipeline to enter and exit the double tube sheet heat exchanger group, thereby heating or cooling the injection water in the pipeline network, or allowing it to enter the point of use, return to the injection water circulation network, or discharge the injection water.

[0060] The entire system is compatible with and supports functions in six modes (see function description).

[0061] Furthermore, these six modes allow for automatic operation and adjustment, or manual segmented control via PLC.

[0062] Electrical system components of this device:

[0063] 1. Composition: This set of equipment is equipped with an air-cooled heat pump modular unit control system, a cold and hot water supply pump set, a cooling and heating heat exchange circulation zone control system, an injection water circulation zone control system, 3 sets of automatic regulating valve control, 4 sets of automatic on / off valve control, 2 sets of temperature sensor control, 1 set of pressure sensor control, a PLC integrated automatic control system, and an alarm controller system.

[0064] 2. The air-cooled heat pump modular unit control system automatically reads data such as temperature, pressure, and flow rate within the system area, exchanges this data with the PLC integrated self-control system, and receives PLC commands to operate, sequentially turning on or off air-cooled heat pump modules 1-4. This achieves a logical operation of "more use, more operation; less use, less operation; no use, no operation" for cooling and heating capacity.

[0065] 3. The hot and cold water supply pump sets and the refrigeration and heating heat exchange circulation zone control system automatically read data such as temperature, pressure, and flow rate within the zone system and exchange this data with the PLC integrated automatic control system. Upon receiving commands from the PLC, the system will start / stop the hot and cold water supply pump sets, activating one or two pumps to supply power to the refrigeration and heating heat exchange circulation zone control system.

[0066] 4. The injection water circulation zone control system consists of automatic regulating valves, automatic on / off valves, temperature sensors, flow sensors, etc. It automatically reads data such as temperature, pressure, and flow rate within the system zone and exchanges this data with the PLC-integrated automatic control system. Its function is to circulate injection water within the system and provide injection water at 40-90℃ to the water usage points; the temperature can be set. The water can enter the double tube sheet heat exchanger through the automatic regulating valves and automatic on / off valves.

[0067] 5. The PLC control system is responsible for collecting data and status information from various areas within the system and influencing automatic regulating valves, automatic switches, differential pressure bypass valve groups, dual-tube sheet heat exchanger groups, cold and heat source return circulation pipelines, and injection water circulation pipelines. This ensures the entire control system operates in automatic mode, achieving its seven functional states. It also records, displays, and alarms related to running time, parameter adjustments, and equipment malfunctions.

[0068] 6. A buzzer alarm is used to alert staff when any abnormalities occur at any workstation.

[0069] The pressure sensor is responsible for detecting pressure data within the circulation pipeline.

[0070] Temperature sensors are responsible for detecting temperature data within the circulation pipeline.

[0071] Automatic regulating valves are responsible for controlling the valve's opening degree from 0% to 100% (thus controlling the flow rate of hot and cold water, and water for injection, as they pass through the valve).

[0072] An automatic on / off valve is responsible for opening and closing the valve, thereby controlling the flow of hot and cold water and injection water through this valve.

[0073] Description of the working process of this device:

[0074] The injection water temperature in the pipeline network within the water-to-injection circulation area is 76℃ (this temperature is considered the normal temperature for injection water).

[0075] Mode 1: Localized water point temperature requirement. When the required temperature of the localized water for injection is lower than the normal temperature, the air-cooled / heat pump modular units in the cooling and heating heat exchange circulation area operate in cooling mode (1-4 units are turned on or off sequentially according to the required cooling capacity). The hot and cold water supply pumps are PID-regulated and frequency-controlled according to pressure sensor 1 (maintaining the pressure set value of the circulation pipeline in the cooling and heating heat exchange circulation area). Automatic on / off valve 3 and automatic regulating valve 3 are opened (and the opening degree is automatically adjusted from 0-100% according to the cooling and heat exchange capacity). The cold water in the pipeline enters the double tube sheet heat exchanger group to cool down the water for injection.

[0076] In the water-to-injection circulation zone, automatic valve 4 opens, automatic regulating valve 1 / 2 closes, automatic valve 2 opens, and automatic valve 4 closes. The water-to-injection sequentially enters the dual-tube sheet heat exchanger assembly and then flows through the water-to-injection pipeline to the discharge port (because the water-to-injection is just beginning to cool down and the temperature has not yet reached the required set temperature). When the water-to-injection temperature (determined by the value detected by temperature sensor 1 / 2) reaches the set value (when both temperature sensors 1 and 2 reach their set values, the system determines that the water-to-injection temperature has reached the required value), automatic valve 2 closes to stop the discharge of water-to-injection. At this point, the water-to-injection temperature has reached the set value and can be used at the point of use. When point 1 / 2 is in use, the corresponding automatic regulating valve 1 / 2 automatically opens (and automatically adjusts the valve opening from 0-100% according to the amount of water used).

[0077] Mode 2: Localized water point temperature requirement. When the required temperature of the localized water injection point is higher than the normal temperature, the air-cooled / heat pump type modular units in the cooling and heating heat exchange circulation area will operate in heating mode (1-4 units will be turned on or off sequentially according to the required cooling capacity). The hot and cold water supply pumps will operate in PID-regulated variable frequency mode according to the pressure sensor 1 (maintaining the pressure set value of the circulation pipeline in the cooling and heating heat exchange circulation area). Automatic on / off valve 3 and automatic regulating valve 3 will be opened (and the opening degree will be automatically adjusted from 0-100% according to the cooling and heat exchange capacity). The cold water in the pipeline will enter the double tube sheet heat exchanger group to heat up the water for injection.

[0078] In the water-to-injection circulation zone, automatic valve 4 opens, automatic regulating valve 1 / 2 closes, automatic valve 2 opens, and automatic valve 4 closes. The water-to-injection sequentially enters the dual-tube sheet heat exchanger assembly and then flows through the water-to-injection pipeline to the discharge port (because the water-to-injection is just beginning to heat up and the temperature has not yet reached the required set temperature). When the water-to-injection temperature (determined by the value detected by temperature sensor 1 / 2) reaches the set value (when both temperature sensors 1 and 2 reach their set values, the system determines that the water-to-injection temperature has reached the required value), automatic valve 2 closes to stop the discharge of water-to-injection. At this point, the water-to-injection temperature has reached the set value and can be used at the point of use. When point 1 / 2 is in use, the corresponding automatic regulating valve 1 / 2 automatically opens (and automatically adjusts the valve opening from 0-100% according to the amount of water used).

[0079] Mode 3: Localized Water Use Point Temperature Requirements. When the required temperature at a localized water injection point is equal to the normal temperature, the air-cooled / heat pump modular units and hot / cold water supply pumps in the cooling / heating heat exchange circulation area stop operating. Automatic switch valve 3 and automatic regulating valve 3 close, and the circulation pipeline in the cooling / heating heat exchange circulation area stops operating. Automatic switch valve 4 in the water injection circulation area remains open, automatic switch valve 2 remains closed, and automatic switch valve 4 remains open. At this time, the water injection circulation in the usage point area operates in conjunction with the entire water injection circulation network for supply and return water. This ensures no waste of cooling and heating energy within the cooling / heating heat exchange circulation area.

[0080] Mode 4: When the temperature of the entire injection water circulation network is required to be lower than the normal temperature, the air-cooled / heat pump type modular units in the cooling and heating heat exchange circulation area will operate in cooling mode (1-4 units will be turned on or off sequentially according to the required cooling capacity). The hot and cold water supply pumps will be adjusted by PID variable frequency operation according to pressure sensor 1 (to maintain the pressure set value of the circulation pipeline in the cooling and heating heat exchange circulation area). Automatic switch valve 3 and automatic regulating valve 3 will be opened (and the opening degree will be automatically adjusted from 0-100% according to the cooling and heat exchange capacity). The cold water in the pipeline will enter the double tube sheet heat exchanger group to cool down its injection water.

[0081] In the water-to-injection circulation area, automatic valve 4 opens, automatic regulating valve 1 / 2 closes, automatic valve 2 closes, and automatic valve 4 opens again. The injection water sequentially enters the dual-tube sheet heat exchanger assembly and flows back to the entire water-to-injection circulation network. Once the injection water temperature (determined by the value detected by temperature sensor 1 / 2) reaches the set value (when both temperature sensors 1 and 2 reach their set values, the system determines that the injection water temperature has reached the set requirement), each point of use within the entire water-to-injection circulation network uses injection water at the set required temperature.

[0082] Mode 5: When the temperature of the entire injection water circulation network is required to be higher than the normal temperature, the air-cooled / heat pump type modular units in the cooling and heating heat exchange circulation area will operate in heating mode (1-4 units will be turned on or off sequentially according to the required cooling capacity). The hot and cold water supply pumps will be operated by PID regulation and frequency conversion according to the pressure sensor 1 (to maintain the pressure set value of the circulation pipeline in the cooling and heating heat exchange circulation area). Automatic switch valve 3 will be opened, and automatic regulating valve 3 will be opened (and the opening degree will be automatically adjusted from 0-100% according to the cooling and heat exchange capacity). The cold water in the pipeline will enter the double tube sheet heat exchanger group to heat up its injection water.

[0083] In the water-to-injection circulation area, automatic valve 4 opens, automatic regulating valve 1 / 2 closes, automatic valve 2 closes, and automatic valve 4 opens again. The injection water sequentially enters the dual-tube sheet heat exchanger assembly and flows back to the entire water-to-injection circulation network. Once the injection water temperature (determined by the value detected by temperature sensor 1 / 2) reaches the set value (when both temperature sensors 1 and 2 reach their set values, the system determines that the injection water temperature has reached the set requirement), each point of use within the entire water-to-injection circulation network uses injection water at the set required temperature.

[0084] Mode 6: When the temperature requirement of the entire injection water circulation network is met, and the required temperature at the injection water usage point is equal to the normal temperature, the air-cooled / heat pump type modular units and cold / hot water supply pumps in the cooling / heating heat exchange circulation area stop operating. Automatic switch valve 3 and automatic regulating valve 3 close, and the circulation pipeline in the cooling / heating heat exchange circulation area stops operating. Automatic switch valve 4 in the injection water circulation area remains open, automatic switch valve 2 remains closed, and automatic switch valve 4 remains open. At this time, the injection water circulation in the usage point area and the entire injection water circulation network operate in a supply and return water path. This avoids wasting the cooling and heating energy in the cooling / heating heat exchange circulation area.

[0085] The above six modes are applicable. Regarding heat exchange, this system allows for switching between cooling and heating functions, using only one cold / heat source circulation network for the dual-tube sheet heat exchanger group. Based on the set temperature of the water for injection, the entire system's control system automatically determines and applies this to the air-cooled / heat pump modular unit to automatically execute cooling or heating preparation, thereby providing a cold or heat source for the dual-tube sheet heat exchanger group and heating or cooling the water for injection. This integrated control system automatically determines whether the temperature of the entire network reaches the required set value. The system can automatically adjust the pressure and temperature of the circulation network within the cooling / heating heat exchange circulation area.

[0086] The structure, shape, materials, and connection relationships of the device in the technical solution, or the process conditions and production process of the method in the technical solution, are analyzed to illustrate the beneficial effects achieved by the present invention compared with the prior art.

[0087] It can replace traditional water-for-injection circulation networks, traditional refrigeration and heating circulation systems, traditional large-volume infusion preparation systems, traditional process water circulation systems for research and development trials, and traditional steam and cooling tower-type heating and cooling systems.

[0088] The traditional system replaces steam heating, cooling tower cooling, and the entire injection water circulation network has the same temperature value, which cannot achieve different temperature operation at local usage points and the entire injection water network.

[0089] The following specific breakthroughs were achieved:

[0090] 1. It breaks through the traditional limitation that the temperature of water for injection in injection pipelines can only be 70-80℃, and the temperature can be customized according to usage requirements.

[0091] 2. It breaks through the traditional limitation that the water temperature of the entire set of water for injection pipelines (at all points of use) is the same. It achieves that the local pipeline network and the local water temperature are different from the water temperature of the entire pipeline network (because the traditional water for injection circulation system is a series supply and return water network with the same water temperature).

[0092] 3. This device breaks through the limitations of traditional injection water circulation systems, which can only function as heating or cooling systems. It integrates heating and cooling of the entire injection water circulation system, allowing for customized settings based on water usage requirements and enabling precise temperature control via PLC automation.

[0093] 4. This breakthrough overcomes the limitations of traditional injection water circulation systems, which can only provide heating and cooling to one user point. It enables the simultaneous supply of injection water at a specific temperature to two user points (the temperature of this water differs from the overall temperature of the injection water circulation pipeline).

[0094] 5. Breaking through the traditional heat exchange mode, which requires two sets of equipment for preparing cold source and heat source, and two sets of heat exchange circulation networks (cold source circulation network and heat source circulation network), this device only requires one set of equipment for preparing cold and heat sources (air-cooled / heat pump type modular unit) and one set of heat exchange circulation network, saving one set of equipment and one set of heat exchange circulation network compared with the traditional mode.

[0095] 6. Breaking away from the traditional model, where boiler steam is needed for heating of the injection water and process cooling water is needed for cooling, this integrated device achieves a "dual-purpose" function. The same unit can both cool (replacing a cooling tower) and heat (replacing boiler steam). It can also be used in environments where steam or cooling water is unavailable at the injection water usage location.

[0096] 7. Breaking away from the traditional fixed-value temperature and pressure control within heat exchange circulation networks, which results in cooling and heating always being in a standby state under any circumstances, leading to the waste of cold and heat energy, this system integrates a "cooling and heating heat exchange circulation zone" and a "water for injection circulation zone" for unified control. It monitors and simultaneously controls the operation of both zones, preventing energy waste caused by changes or deviations in the usage or operating data of one system.

[0097] 8. Achieve automatic operation and precise control, avoiding operational deviations caused by human intervention.

[0098] 9. Reduce manual input, eliminate manual operation, and eliminate deviations in production operation data and operational results.

[0099] 10. Save on system operating energy costs and reduce production costs.

[0100] 11. To address the impact of fatigue caused by prolonged manual observation on operational performance and production deviations.

[0101] 12. Remind operators of the daily volume, pressure, and temperature of water for injection at different temperatures, so as to facilitate operators in statistics and classification.

[0102] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A heating and cooling system for injection water that replaces steam and cooling towers, characterized in that: The system includes: air-cooled heat pump modular units, which provide a cold or heat source; multiple air-cooled heat pump modules, each including at least a compressor, a four-way valve, an evaporator, a condenser, a heating system, a flow control module, and temperature and pressure control components; a hot and cold water supply pump set, including at least two pumps, a pressure gauge, a check valve, and a Y-type filter, used to provide pressure to the cooling and heating heat exchange circulation zone and to operate at variable frequency according to the cold and heat source requirements via PLC control system commands; a differential pressure bypass automatic valve set, including a differential pressure bypass automatic valve, a manual valve set, and a differential pressure gauge, used to ensure pressure balance in the cold and heat source circulation system and prevent overpressure; a dual tube sheet heat exchanger set, used to exchange heat between the cooling and heating heat exchange circulation zone and the injection water circulation zone, realizing energy conversion and transfer; and an injection water circulation pipeline, including automatic regulating valves, automatic on / off valves, and manual on / off valves, used to control the circulation, temperature regulation, and flow direction of the injection water into and out of the heat exchanger. The PLC integrated automatic control system is used to collect temperature, pressure, and flow data, and control air-cooled heat pump modules, water pumps, heat exchangers, and valve components to achieve automatic adjustment and stable operation of the system.

2. The alternative steam and cooling tower type injection water heating and cooling system according to claim 1, characterized in that: The PLC integrated automatic control system monitors the temperature and pressure in the pipeline in real time through temperature and pressure sensors, and performs PID adjustment according to the set values ​​to achieve variable frequency and stable voltage operation.

3. The alternative steam and cooling tower type injection water heating and cooling system according to claim 2, characterized in that: The heating and cooling system for water for injection can be automatically controlled by a PLC, which can start and stop the air-cooled heat pump modules in stages and dynamically adjust the number of modules to be turned on according to the heating and cooling load requirements.

4. The alternative steam and cooling tower type injection water heating and cooling system according to claim 3, characterized in that: The water for injection heating and cooling system uses a pressure sensor to detect the pressure data in the pipeline in real time, and uses a PLC for PID regulation to enable the water pump to operate with variable frequency and stable pressure.

5. The alternative steam and cooling tower type injection water heating and cooling system according to claim 4, characterized in that: The heating and cooling system for water for injection uses a dual tube sheet heat exchanger assembly as the core heat exchange device to achieve switching between cooling and heating functions, and only one set of cold and heat source circulation pipe network is needed to complete the cold and heat exchange.

6. The alternative steam and cooling tower type injection water heating and cooling system according to claim 5, characterized in that: The water-to-injection heating and cooling system includes multiple automatic on / off valves and automatic regulating valves, along with temperature sensors, to enable different temperatures for local water points and the overall pipeline network.

7. The alternative steam and cooling tower type injection water heating and cooling system according to claim 6, characterized in that: The water-to-injection heating and cooling system can simultaneously provide water-to-injection at different temperatures to multiple water points and coordinate the operation of various valves and heat exchangers through a PLC control system.

8. The alternative steam and cooling tower type injection water heating and cooling system according to claim 7, characterized in that: The water-to-injection heating and cooling system can store operating data, including temperature, pressure, and flow rate information, for users to query and adjust.

9. The alternative steam and cooling tower type injection water heating and cooling system according to claim 8, characterized in that: The heating and cooling system for water for injection is equipped with a buzzer alarm. When the heating and cooling system malfunctions, it will issue an alarm signal to prompt maintenance.

Images