CN204574587U - Nuclear-magnetism establishes the air-cooled water-cooled of trim set in the heat-exchanger of one - Google Patents

Abstract

The utility model proposes a heat exchange unit for nuclear magnetic equipment that integrates air cooling and water cooling. The heat exchange unit has a shell, and a secondary water circulation system for cooling the electric control part of the nuclear magnetic equipment is provided in the shell. A primary water circulation system for exchanging heat with the secondary water circulation system is provided in the installation site of the nuclear magnetic equipment. The nuclear magnetic equipment is internally connected, and a return air chamber, a heat exchange chamber, and an air supply chamber that are connected in sequence are formed on the side close to the nuclear magnetic equipment in the shell, and the return air chamber and the air supply chamber are respectively connected with the nuclear magnetic equipment. A heat exchange device that constitutes one of the heat exchange branches of the secondary water circulation system is provided, and a blower is arranged at the opening where the heat exchange chamber communicates with the air supply chamber. The heat exchange group can not only realize the water-water heat exchange mode, but also can realize the air-cooled heat exchange mode, which is beneficial to improve the heat exchange efficiency.

Description

Air-cooled and water-cooled heat exchange unit for nuclear magnetic equipment

technical field

The utility model relates to a heat exchange unit integrating air cooling and water cooling for nuclear magnetic equipment.

Background technique

Nuclear magnetic equipment is usually equipped with two major heat exchange systems, one of which is a water chiller, which mainly uses its own compression refrigeration system to provide a cold source. The other type is the heat exchange group, which mainly uses the cold water provided by the installation site of the nuclear magnetic equipment and the circulating water circuit of the nuclear magnetic equipment itself to complete heat exchange and supply the nuclear magnetic equipment. However, at present, this type of heat exchange unit can only provide the water-water heat exchange mode commonly used in nuclear magnetic equipment, and cannot provide the air-cooled heat exchange mode, which limits the heat exchange efficiency of nuclear magnetic equipment.

Utility model content

In view of this, the main purpose of the present utility model is to provide a heat exchange group integrating air cooling and water cooling for nuclear magnetic equipment which is beneficial to improve heat exchange efficiency. In the utility model, for convenience of description, the water flowing through the secondary water circulation system is defined as secondary water, and the water flowing through the primary water circulation system is defined as primary water.

In order to achieve the above object, the utility model proposes a heat exchange group for nuclear magnetic equipment that integrates air cooling and water cooling. A secondary water circulation system for cooling, a primary water circulation system for exchanging heat with the secondary water circulation system is provided in the installation site of the nuclear magnetic equipment, and the housing and the nuclear magnetic equipment are arranged side by side and closely attached to each other. The sides close to each other are open so that the housing communicates with the inside of the nuclear magnetic equipment, and a return air chamber, a heat exchange chamber and an air supply chamber that are connected in sequence are formed in the housing on a side close to the nuclear magnetic equipment, And the air return cavity and the air supply cavity are respectively communicated with the nuclear magnetic equipment, and a heat exchange device constituting one of the heat exchange branches of the secondary water circulation system is arranged in the heat exchange cavity. A blower is arranged at the opening where the heat exchange chamber communicates with the air supply chamber.

With the above-mentioned structure, the air with a lower temperature in the heat exchange chamber is sent into the air supply chamber under the action of the blower, and then this part of the air with a lower temperature is sent into the nuclear magnetic equipment and is discharged in the nuclear magnetic equipment. The relevant components are cooled or exchanged internally, and the air with a higher temperature after heat exchange enters the return air cavity, enters the heat exchange cavity through the return air cavity, and the temperature in the heat exchange cavity The higher air exchanges heat with the cooling capacity carried by the heat exchange equipment in the heat exchange chamber, so that this part of the air becomes a low-temperature gas, and this part of the low-temperature gas enters the next air circulation process under the action of the blower.

From the above, the heat exchange unit described in the utility model can realize not only the water-water heat exchange mode, but also the air-cooled heat exchange mode, which solves the air-cooled heat exchange problem of nuclear magnetic equipment, and is beneficial to improve the heat exchange efficiency. In addition, since the air flow only circulates sequentially between the return air chamber, heat exchange chamber, air supply chamber and nuclear magnetic equipment, these parts together form a closed space, so that no external air flow is introduced, so that the electromagnetic in the nuclear magnetic equipment can be released. The circuit is separated from the outside dust to prevent the electromagnetic circuit in the nuclear magnetic equipment from being polluted by the external dust, so as to maintain a clean environment inside the nuclear magnetic equipment, which is conducive to improving the service life of the nuclear magnetic equipment.

Preferably, the housing as a whole is a cuboid-shaped component with an open left side and is erected, and the air return cavity, heat exchange cavity and air supply cavity are formed on the left side of the cuboid-shaped component, and the three are aligned in the front-rear direction. Set up in order from back to front.

Preferably, the air return cavity, the heat exchange cavity and the air supply cavity are formed in the entire up-down direction of the cuboid-shaped component, and there are multiple blowers arranged at intervals along the above-mentioned up-down direction.

Adopting the above-mentioned structure can ensure that the air flow circulates more smoothly among the return air chamber, the heat exchange chamber, the air supply chamber and the nuclear magnetic equipment, and at the same time can ensure that the air flow is sent into the nuclear magnetic equipment more uniformly.

Preferably, the heat exchange device is a finned tube radiator or a coil radiator.

Preferably, the secondary water circulation system includes a circulating water pump arranged in sequence along the circulating flow direction of the water flow, five heat exchange branch pipes connected to the water outlet of the circulating water pump, and five heat exchange branch pipes communicated with the water return ports of the five heat exchange branch pipes. A plate heat exchanger, and an expansion tank located between the plate heat exchanger and the circulating water pump, the heat exchange equipment constitutes a part of the heat exchange branch pipeline placed in the heat exchange chamber.

With the above structure, the secondary water with lower temperature flows out from the water outlet of the circulating water pump and then enters the five heat exchange branch pipes respectively, and the secondary water in the five heat exchange branch pipes becomes Secondary water with a higher temperature, this part of the secondary water with a higher temperature is uniformly collected into the secondary water circulation pipe in the plate heat exchanger. The secondary water with a higher temperature exchanges heat with the primary water circulation system in the plate heat exchanger, and the secondary water with a lower temperature after the heat exchange is adjusted and controlled to enter the circulating water pump, thereby completing The entire secondary water cycle, repeating the above process in this way, is the water-water heat exchange mode of the heat exchange unit described in the present invention. Wherein, the heat exchange equipment placed in the heat exchange chamber constitutes a part of the aforementioned heat exchange branch pipeline, and the high-temperature air that completes the heat exchange in the nuclear magnetic equipment enters the heat exchange chamber through the return air chamber. The air with a higher temperature in the hot chamber exchanges heat with the cold energy carried by the heat exchange equipment, so that this part of the air becomes a low-temperature gas, thereby realizing the provision of cold air for the nuclear magnetic equipment.

From the above, the heat exchange unit described in the utility model can realize not only the water-water heat exchange mode, but also the air-cooled heat exchange mode, which solves the air-cooled heat exchange problem of nuclear magnetic equipment, and is beneficial to improve the heat exchange efficiency.

Preferably, the secondary water circulation system further includes an electric three-way valve, a water pressure switch, and a pressure gauge arranged between the plate heat exchanger and the expansion water tank, The automatic exhaust valve and pressure sensor between, and the pressure gauge and temperature sensor that are arranged between the circulating water pump and the water inlets of the five heat exchange branch pipelines.

Preferably, the primary water circulation system performs heat exchange with the secondary water circulation system in the plate heat exchanger, and the primary water circulation system includes a field chiller installed in the installation site of the nuclear magnetic equipment, and communicates with the The site chiller and the primary water inlet pipe of the plate heat exchanger and the primary water drain pipe used to discharge the primary water flowing through the plate heat exchanger.

Preferably, a Y-shaped filter is arranged on the primary water inlet pipe, and a flow switch is arranged on the primary water discharge pipe.

Preferably, a radio frequency amplifier is provided near the side of the nuclear magnetic equipment that is placed close to the housing of the heat exchange unit, and a gradient amplifier is provided near the bottom thereof.

Description of drawings

Figure 1 is a schematic diagram of the configuration of the heat exchange group and the nuclear magnetic equipment, and a schematic diagram of the air-cooled and water-cooled circulation path;

Fig. 2 is a schematic diagram of the working principle of the heat exchange group;

Fig. 3 is a left oblique view of the heat exchange unit;

Fig. 4 is a left view of the heat exchange group shown in Fig. 3;

Fig. 5 is a schematic structural view of the airflow circulation cavity of the heat exchange unit.

Detailed ways

The specific implementation of the air-cooled and water-cooled heat exchange unit for nuclear magnetic equipment described in the utility model will be described in detail below with reference to FIGS. 1 to 5 . In the following description, the circulating water flowing in the secondary water circulation system 2 is defined as secondary water, and the water flowing through the primary water circulation system is defined as primary water.

As shown in Figure 3, the main body of the heat exchange unit is in the shape of an upright rectangular parallelepiped as a whole, and has a rectangular parallelepiped casing 1 with an open left side and erected vertically. The casing 1 adopts a frame structure as a whole, as shown in Figure 3 Shown, upper and lower panels, rear panel and right panel are installed on the frame structure, wherein the front panel is omitted. A first partition 41 is installed near the left side of the casing 1, and the first partition 41 is arranged on the entire front and back direction of the casing 1, that is, arranged in parallel with the right panel of the casing 1, and its upper and lower sides It abuts against the upper and lower panels of the housing 1 , and its rear side abuts against the rear panel of the housing 1 .

As shown in Figures 1 to 5, the entire space of the housing 1 is divided into two parts by the first partition 41, and a secondary water circulation system is installed near the upper part of the housing space on the right side of the first partition 41. 2. The secondary water circulation system 2 is used to cool down the electronic control part of the nuclear magnetic equipment. It usually includes a circulating water pump 21, a plate heat exchanger 22, an expansion tank 23, an electric control box, and a chilled water coil 24 (coil type A kind of radiator, constituting the heat exchange equipment described in the present utility model), and other associated pipe fittings and detection components, the aforementioned components are mainly integrated together to form a module. In addition, the secondary water circulation system 2 also includes five heat exchange branches interspersed in the aforementioned shell space and inside the nuclear magnetic equipment. The nozzles communicate with the plate heat exchanger 22 respectively. Specifically, as shown in Figure 2, the circulating water pump 21, the five heat exchange branch pipes communicated with the water outlet of the circulating water pump 21, and the plate heat exchanger 22 communicated with the water return ports of the five heat exchange branch pipes are along the water flow. The flow direction is arranged in sequence, and the expansion tank 23 is located between the plate heat exchanger 22 and the circulating water pump 21 . In addition, an electric three-way valve, a water pressure switch, a pressure gauge, etc. are provided between the plate heat exchanger 22 and the expansion water tank 23, and an automatic exhaust valve and a pressure sensor are also provided between the expansion water tank 23 and the circulating water pump 21. etc., pressure gauges and temperature sensors etc. are also arranged between the circulating water pump 21 and the water inlets of the five heat exchange branch pipelines. Among them, the corresponding English abbreviations of the above-mentioned valve body and other components in Figure 2 are: electric three-way valve-TV, water pressure switch-WPS, pressure gauge-WPo, automatic exhaust valve-AV, pressure sensor-SP, pressure gauge- WPi, temperature sensor-to.

As shown in Figure 1, a helium compressor 3 is installed near its lower part in the shell space on the right side of the first dividing plate 41, and the helium compressor 3 is located directly below the secondary water circulation system 2, and the helium compressor 3 is A part of the nuclear magnetic equipment, in order to facilitate maintenance and ensure timely heat dissipation, the helium compressor 3 is usually installed in the shell 1 of the heat exchange unit provided with the nuclear magnetic equipment 10 .

As shown in Figures 3 to 5, a plurality of partitions are arranged in the housing space located on the left side of the first partition 41 near the middle of the front and back directions, and these partitions are almost arranged on the entire upper and lower sides of the housing 1. direction, a closed chamber is jointly surrounded by the plurality of partitions and the first partition 41. In the present utility model, the closed chamber is defined as a heat exchange chamber, and the shell located at the front side of the heat exchange chamber The space is defined as the air supply cavity 42, and the shell space located at the rear side of the heat exchange cavity is defined as the return air cavity 43, and the three are arranged in sequence from back to front in the front and rear direction as the return air cavity 43, the heat exchange cavity and the air supply cavity. cavity 42 and these three are connected in turn, in the utility model, the air circulation cavity is composed of the return air cavity 43, the heat exchange cavity and the air supply cavity 42 together. A plurality of openings are provided on the second partition plate 44 between the heat exchange chamber and the air supply chamber 42, and the plurality of openings are arranged in a row at intervals in the vertical direction, and a blower 5 is installed at each opening. The aforementioned chilled water coil 24 is accommodated in the heat exchange chamber, and the chilled water coil 24 together with related pipe fittings constitutes one of the five heat exchange branches of the secondary water circulation system 2 .

In addition, a primary water circulation system is also provided in the installation site of the nuclear magnetic equipment 10 , and the primary water circulation system is used for exchanging heat with the aforementioned secondary water circulation system 2 . As shown in Figures 1 to 2, it usually includes a field chiller 6 set in the installation site of the nuclear magnetic equipment 10, a primary water inlet pipe 61 connecting the site chiller 6 and the plate heat exchanger 22, and a The primary water return pipe 62 from which the primary water of the plate heat exchanger 22 is discharged. A Y-shaped filter for filtering the water flowing into the plate heat exchanger 22 is usually arranged on the primary water inlet pipe 61, and a flow switch is arranged on the primary water return pipe 62, wherein the Y-shaped filter and the flow switch are in the The corresponding English abbreviations in Fig. 2 are WF and FS.

As shown in Figures 1 and 2, the left side of the housing 1 of the heat exchange unit is open (that is, the left panel is not configured), and the nuclear magnetic equipment 10 is in the shape of a rectangular parallelepiped as a whole, and the right side of the nuclear magnetic equipment 10 is also open. set, and the heat exchange group and the side of the nuclear magnetic equipment 10 that are close to each other (ie the left side of the shell 1 of the heat exchange group and the right side of the nuclear magnetic equipment 10) are the same in size. In actual application, the heat exchange group and the nuclear magnetic equipment 10 are arranged side by side, and the left end surface of the former is in contact with the right end surface of the latter so that the heat exchange group communicates with the nuclear magnetic equipment 10 . A sealing strip is provided at the joint between the left end face of the housing 1 of the heat exchange unit and the right end face of the nuclear magnetic equipment 10. The sealing strip is compacted by the aforementioned two end faces that are closely attached to each other, and the heat exchange unit is formed by the sealing strip. A sealed connection is formed at the junction with the nuclear magnetic equipment 10 to prevent airflow from leaking out.

The working mode of the air-cooled and water-cooled heat exchange unit for nuclear magnetic equipment according to the present invention will be briefly described below with reference to FIGS. 1-2 in conjunction with the above-mentioned structural description.

The secondary water with lower temperature in the secondary water circulation system 2 flows out from the water outlet of the circulating water pump 21 and enters five heat exchange branch pipelines respectively, and these five heat exchange branch pipelines are respectively supplied to the gradient amplifier 8, the gradient coil 9, the radio frequency Amplifier 7, helium compressor 3, and the aforementioned chilled water coil 24 housed in the heat exchange chamber, wherein the radio frequency amplifier 7 is arranged above the side of the nuclear magnetic equipment 10 that is close to the heat exchange unit housing 1, The gradient amplifier 8 is arranged below the same side; the secondary water in the aforementioned five heat exchange branch pipelines completes the heat exchange and becomes secondary water with a higher temperature. The ends of the pipelines are unified into the secondary water circulation pipeline in the plate heat exchanger 22. At the same time, in the primary water circulation system, the site chiller 6 provides cold water at 6° to 12° as the cold source, and the primary water with a lower temperature in the site chiller 6 flows into the primary water in the plate heat exchanger 22 through the primary water inlet pipe 61 in the circulation pipeline. The higher-temperature secondary water and the lower-temperature primary water exchange heat in the plate heat exchanger 22, and the lower-temperature secondary water after the heat exchange is regulated and controlled to enter the circulating water pump 21, thereby completing the entire process. Secondary water cycle; the primary water with higher temperature after heat exchange is discharged from the plate heat exchanger 22 through the primary water return pipe 62 . The above-mentioned process is repeated in this way and circulated in sequence, which is the water-to-water heat exchange mode of the heat exchange unit described in the present invention, and its circulation path is indicated by a dotted line in FIG. 2 . In addition, the temperature of the water in the secondary water circulation loop can be adjusted steplessly through the electric three-way regulating valve installed between the water inlet and outlet of the plate heat exchanger 22, thereby accurately controlling the temperature of the circulating water in the nuclear magnetic equipment.

One of the heat exchange branch pipes in the secondary water circulation system 2 includes the aforementioned chilled water coil 24, in other words, the chilled water coil 24 constitutes a part of the heat exchange branch pipe, and the two chilled water coils 24 The ends communicate with the circulating water pump 21 and the plate heat exchanger 22 respectively through pipe fittings, and the cold source is provided by the chilled water coil 24 . The air with a lower temperature in the heat exchange chamber is sent into the air supply chamber 42 under the action of a plurality of blowers 5, and then this part of the air with a lower temperature is sent into the air supply chamber 42, the nuclear magnetic equipment 10 in sequence The relevant components in the equipment (the control cabinet in the nuclear magnetic equipment, the gradient amplifier 8, the radio frequency amplifier 7, etc.) are cooled or exchanged. After the heat exchange is completed, the air with a higher temperature flows into the return air chamber 43 and passes through the return air chamber 43. Entering the heat exchange chamber and flowing through the chilled water coil 24, the air with a higher temperature in the heat exchange chamber exchanges heat with the cooling capacity carried by the chilled water coil 24, so that this part of the air becomes a low-temperature gas, and this part The low-temperature gas enters the next air circulation process under the action of a plurality of air blowers 5, and repeats this, which is the air-cooled heat exchange mode of the heat exchange unit described in the present invention, and its circulation path is represented by "a dot-dash line" in Fig. 2 express.

It is worth noting that the air-cooled heat exchange mode is the circulation of air in the confined space composed of the nuclear magnetic equipment and the heat exchange unit. The airflow outside the two devices does not participate in the heat exchange cycle, so that the electromagnetic circuit in the nuclear magnetic equipment can Separated from external dust, avoiding external dust from contaminating the electromagnetic circuit in the nuclear magnetic equipment, keeping a clean environment inside the nuclear magnetic equipment, and improving the service life of the nuclear magnetic equipment.

From the above, the heat exchange unit described in the utility model can realize not only the water-water heat exchange mode, but also the air-cooled heat exchange mode, which solves the air-cooled heat exchange problem of nuclear magnetic equipment, and is beneficial to improve the heat exchange efficiency.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (9)

1. a nuclear-magnetism establishes the air-cooled water-cooled of trim set in the heat-exchanger of one, described heat-exchanger has a housing, be provided with in order to divide the Secondary water circulation of lowering the temperature system to the electric control part of nuclear-magnetism equipment in this housing, be provided with in order to carry out a water circulation system of heat exchange with this Secondary water circulation system in the fabricating yard of described nuclear-magnetism equipment, it is characterized in that

Described housing and described nuclear-magnetism equipment are close to side by side and are arranged and both recording quantity be close to each other arrange that described housing is communicated with nuclear-magnetism device interior,

In described housing in formed near the side of described nuclear-magnetism equipment be communicated with successively return air chamber, heat exchanging chamber and wind pushing cavity, and described return air chamber and wind pushing cavity are communicated with described nuclear-magnetism equipment respectively, in described heat exchanging chamber, be provided with the heat transmission equipment of a wherein heat exchange branch road forming described Secondary water circulation system, be configured with pressure fan realizing the opening part that described heat exchanging chamber is connected with wind pushing cavity.

2. heat-exchanger according to claim 1, it is characterized in that, described housing entirety is that left side is uncovered and erect the rectangular-shaped parts arranged, described return air chamber, heat exchanging chamber and wind pushing cavity be formed in the left side of these rectangular-shaped parts and this three in the longitudinal direction by rear to front setting gradually.

3. heat-exchanger according to claim 2, is characterized in that, described return air chamber, heat exchanging chamber and wind pushing cavity are formed on the whole above-below direction of described rectangular-shaped parts, and described pressure fan is multiple and arranges along aforementioned above-below direction interval.

4. heat-exchanger according to claim 1, is characterized in that, described heat transmission equipment is finned tube radiator or coil radiator.

5. heat-exchanger according to claim 1, it is characterized in that, described Secondary water circulation system comprises and circulates the water circulating pump that direction sets gradually, five the heat exchange bypass line be communicated with the delivery port of this water circulating pump, the plate type heat exchanger that is communicated with the water return outlet of these five heat exchange bypass line along current, and the expansion tank between this plate type heat exchanger and described water circulating pump

Described heat transmission equipment forms a part for the heat exchange bypass line be placed in described heat exchanging chamber.

6. heat-exchanger according to claim 5, it is characterized in that, described Secondary water circulation system also comprises the electric T-shaped valve, hydraulic pressure switch, the Pressure gauge that are arranged between described plate type heat exchanger and described expansion tank, be arranged on the automatic exhaust steam valve between described expansion tank and described water circulating pump and pressure sensor, and Pressure gauge between the water inlet being arranged on described water circulating pump and described five heat exchange bypass line and temperature sensor.

7. heat-exchanger according to claim 5, it is characterized in that, a described water circulation system carries out heat exchange with described Secondary water circulation system in described plate type heat exchanger, the place cooling-water machine arranged, is communicated with a water water inlet pipe of this place cooling-water machine and described plate type heat exchanger and a water drainpipe in order to be discharged by the water flowing through described plate type heat exchanger in the fabricating yard that a described water circulation system is included in described nuclear-magnetism equipment.

8. heat-exchanger according to claim 7, is characterized in that, a described water water inlet pipe is configured with y-type filter, and a described water drainpipe is configured with flow switch.

9. heat-exchanger according to claim 1, is characterized in that, is provided with radio frequency amplifier, below it, is provided with gradient amplifier in the side being close to setting with described heat-exchanger housing of described nuclear-magnetism equipment above it.