Multi-flow-path water cooling machine

Abstract

The invention relates to a multi-flow-path water cooling machine, which relates to the technical field of detection sample pretreatment, and comprises a refrigeration device, a cooling box and a plurality of sample heat exchange flow paths, the refrigeration device comprises a refrigerant evaporation pipe, the refrigerant evaporation pipe is arranged in the cooling box so as to cool an energy storage agent filled in the cooling box, and the sample heat exchange flow path comprises a sample input pipe, a sample heat exchange pipe and a sample output pipe which are sequentially connected with one another; a flow equalizing sleeve is arranged at the inlet end of the sample input pipe, and the sample heat exchange pipes are dispersedly arranged in the cooling box, so that samples in the sample heat exchange pipes can be cooled by utilizing an energy storage agent in the cooling box, and the consistency and the stability of sample gas cooling effects in different flow paths can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of sample pretreatment for detection, and in particular to a multi-channel water cooler. Background Art

[0002] Resins are usually polymerized from monomer materials at high temperatures. During the resin synthesis process, the polymerization reaction of the monomer materials usually produces certain reaction gases. The composition of the reaction gas can usually reflect the reaction state of the resin synthesis. Therefore, during the resin synthesis process, samples of the reaction gas are usually extracted from different sections of the resin synthesis equipment for real-time detection. The reaction conditions of different sections of the resin synthesis equipment are controlled according to the composition of the sample gas, which helps to control the reaction process of different stages of the resin synthesis and ensure the quality of the obtained resin.

[0003] The sample gas extracted from the resin synthesis equipment usually has a very high temperature. Direct detection of the components is likely to damage the analytical instrument and affect the accuracy of the test results. Therefore, before testing the sample gas, it is usually necessary to quickly cool the sample gas to a set temperature. The cooling of the sample gas is usually carried out using a water chiller, which can quickly cool the sample gas through water and use the high specific heat capacity of water to ensure the stability of the sample gas temperature.

[0004] Existing water coolers are usually only equipped with one sample gas cooling flow path, while in the resin synthesis process, it is usually necessary to perform real-time detection of the gases generated by multiple different sections of the resin synthesis equipment. In this case, multiple water coolers need to be set up at the same time, which not only occupies a large space, but also makes it difficult to uniformly control the temperature of multiple sample gases from different sections. Some water coolers are also equipped with multiple sample gas flow paths, each of which is connected to a different section of the resin synthesis equipment through a pipeline. The pressure of sample gases from different sections will be affected by different factors and will be different. The flow rate of sample gases passing through different flow paths is also different, which affects the consistency and stability of the cooling effect of sample gases in different flow paths. Summary of the invention

[0005] In order to improve the consistency and stability of the cooling effect of sample gas in different flow paths, the present application provides a multi-flow path water chiller.

[0006] The multi-channel water chiller provided in this application adopts the following technical solution: A multi-channel water chiller comprises a refrigeration device, a cooling box and a plurality of sample heat exchange channels; the refrigeration device comprises a refrigerant evaporation tube, the refrigerant evaporation tube is arranged in the cooling box so as to be able to cool an energy storage agent filled in the cooling box; the sample heat exchange channel comprises a sample input tube, a sample heat exchange tube and a sample output tube which are sequentially connected to each other; a flow equalizing sleeve is arranged at the inlet end of the sample input tube; the sample heat exchange tubes are dispersedly arranged in the cooling box so as to be able to use the energy storage agent in the cooling box to cool the samples in the sample heat exchange tubes.

[0007] By adopting the above technical scheme, by using the refrigerant evaporation tube and the sample heat exchange tube arranged in the cooling box, the evaporation of the refrigerant in the refrigerant evaporation tube can be used to cool the energy storage agent filled in the cooling box, and the energy storage agent can be cooled to a set temperature. The energy storage agent with large capacity and high specific heat capacity is used to ensure the stability of the temperature of the energy storage agent, and the energy storage agent is used to cool the samples in different flow paths in multiple sample heat exchange tubes, which is beneficial to improve the consistency of the cooling temperature of the samples in different flow paths; by using the flow equalizing sleeves respectively arranged at the inlet ends of the sample input pipes, the influence of the pressure of the sample gas input in different flow paths on the sample flow rate can be reduced, and the consistency and stability of the flow rates of different flow paths and the same flow path at different time periods are improved, thereby improving the consistency and stability of the cooling effect of the sample gas in different flow paths.

[0008] In a specific feasible implementation scheme, a plurality of flow path supports are arranged at intervals in the cooling box, an upper crossbeam is arranged on the upper part of the flow path support, a plurality of input pipe holes are arranged on the top wall of the cooling box, and the plurality of input pipe holes are grouped and arranged above the upper crossbeam, the sample input pipe passes through the input pipe hole to enter the cooling box and is fixed on the upper crossbeam, the sample heat exchange tube is arranged in a spiral shape and is connected below the sample input pipe, a plurality of output pipe holes corresponding to the input pipe holes are arranged on the bottom wall of the cooling box, the sample output pipe is arranged below the sample heat exchange tube and extends through the output pipe hole to the outside of the cooling box, and a sealing ring is arranged between the sample output pipe and the output pipe hole.

[0009] By adopting the above technical solution, the sample input tube is fixed on the upper crossbeam, and the sample heat exchange tube is arranged in a spiral shape. The thermal expansion of the sample input tube and the sample output tube can be buffered by the expansion and contraction of the spiral sample heat exchange tube, thereby ensuring the stability of the connection between each sample heat exchange flow path and the cooling box, and improving the heat exchange effect between the sample heat exchange tube and the energy storage agent in the cooling box.

[0010] In a specific feasible implementation scheme, an evaporator tube hole is provided on one side of the cooling box, the refrigerant evaporator tube enters the cooling box through the evaporator tube hole, and is coiled between each group of the sample heat exchange tubes. An evaporator tube bracket is provided in the cooling box, the evaporator tube bracket is provided between the flow path brackets, a lower cross beam is provided at the lower part of the evaporator tube bracket, and the refrigerant evaporator tube is fixed to the lower cross beam by a fixing clip.

[0011] By adopting the above technical scheme, the refrigerant evaporator tubes are coiled between each group of sample heat exchange tubes to cool the energy storage agent around different sample heat exchange tubes, thereby improving the temperature consistency of the energy storage agent around different sample heat exchange tubes; the refrigerant evaporator tubes are fixed to the lower cross beam by fixing clips, thereby improving the position stability of the refrigerant evaporator tubes in the cooling box, while reducing the influence of the lower cross beam on the heat exchange between the refrigerant evaporator tubes and the energy storage agent.

[0012] In a specific possible implementation scheme, a three-way connector is provided at the lower end of the sample output tube, a sample output interface is connected to the side of the three-way connector, and an automatic drainer is connected to the bottom.

[0013] By adopting the above technical solution, using a three-way connector connected between the sample output tube, the sample output interface and the automatic drainer, it is possible to collect and discharge condensed water in the sample gas through the automatic drainer while outputting the cooled sample gas to the sample output interface, thereby ensuring the stable output of the sample gas and preventing condensed water from affecting the detection results of the sample gas composition.

[0014] In a specific possible implementation scheme, an energy storage agent injection port is provided on one side of the cooling box, an energy storage agent discharge port is provided on the bottom wall of the cooling box, a drain pipe is provided below the cooling box, the discharge port of the automatic drainer is connected to the drain pipe, and a discharge control valve is connected between the energy storage agent discharge port and the drain pipe.

[0015] By adopting the above technical scheme, by utilizing the energy storage agent discharge port arranged on the bottom wall of the cooling box and the discharge control valve arranged at the energy storage agent discharge port, the energy storage agent in the cooling box can be discharged after the work is completed, so as to prevent the energy storage agent from causing corrosion of the cooling box; by utilizing the drain pipe arranged under the cooling box, the condensed water generated during the operation of the water cooler and the energy storage agent after the work is completed can be discharged conveniently.

[0016] In a specific possible implementation mode, an energy storage agent heat equalizing device is further provided in the cooling box, and the energy storage agent heat equalizing device is provided at the bottom of the cooling box.

[0017] By adopting the above technical solution and utilizing the energy storage agent heat equalizing device arranged at the bottom of the cooling box, the uniform flow of the energy storage agent in the cooling box can be promoted, the uniformity of the temperature of the energy storage agent in different parts of the cooling box can be ensured, and the heat exchange effect between the energy storage agent and the refrigerant evaporator tube and the sample heat exchange tube can be improved.

[0018] In a specific possible implementation scheme, the energy storage agent heat equalizing device includes a heat equalizing air pipe and an airflow connecting pipe. The heat equalizing air pipe is fixed on the bottom wall of the cooling box, and a plurality of air escape ports are arranged at intervals on the pipe wall. One end of the airflow connecting pipe is connected to the heat equalizing air pipe, and the other end passes through the cooling box and is connected to a heat equalizing air valve arranged on the cooling box.

[0019] By adopting the above technical solution, multiple air escape ports spaced apart on the wall of the heat-averaging air pipe can be used to release bubbles from different positions at the bottom of the cooling box, drive the energy storage agent to flow, and improve the uniformity of the temperature at different positions of the energy storage agent. The heat-averaging air valve connected to the airflow connecting pipe can control the flow rate and on-off of the airflow flowing into the airflow connecting pipe, thereby achieving a good heat-averaging effect for the energy storage agent and saving airflow consumption.

[0020] In a specific feasible implementation scheme, the gas escape port on the heat-averaging gas pipe is connected to an gas escape nozzle, and the gas escape nozzle includes a gas nozzle body, a sliding blocking rod and a compression spring. One end of the gas nozzle body is provided with a blocking rod hole and an air outlet hole, and the other end is provided with a throttling hole. One end of the sliding blocking rod is provided with an air outlet pressure plate, and the other end is provided with a compression spring seat. The sliding blocking rod is arranged through the blocking rod hole so that the compression spring seat is located in the gas nozzle body. The compression spring is sleeved on the sliding blocking rod and is located between the compression spring seat and the gas nozzle body, so that the air outlet pressure plate closes the air outlet hole.

[0021] By adopting the above technical scheme, a sliding blocking rod arranged through the blocking rod hole at the end of the air nozzle body can slide under the push of a compression spring, thereby driving an air outlet pressure plate to close the air outlet hole; and when the air flow continuously enters the air nozzle body through the throttle hole, the air pressure in the air nozzle body increases, pushing the sliding blocking rod to move and driving the air outlet pressure plate to leave the air outlet hole, and the gas in the air nozzle body escapes through the air outlet hole, thereby making the air outlet hole intermittently closed and opened, thereby forming a heat equalization effect of the energy storage agent and reducing the adhesion of bubbles on the surface of the refrigerant evaporator tube and the sample heat exchange tube, thereby interfering with the heat exchange effect.

[0022] In a specific feasible implementation scheme, the multi-channel water-cooling machine of the present application further includes a frame, the refrigeration device further includes a refrigeration device body, the cooling box and the refrigeration device body are both arranged on the frame, the refrigeration device body is arranged on one side of the cooling box, and the refrigerant evaporation tube is connected to the refrigeration device body; a controller is arranged on the cooling box, a temperature sensor is arranged in the cooling box, and the controller is connected to the temperature sensor and the refrigeration device body.

[0023] By adopting the above technical solution, by utilizing the arrangement of the cooling box and the refrigeration device body on the frame, a fixed position between the cooling box and the refrigeration device body can be formed, which facilitates the movement of the multi-channel water chiller of the present application; by utilizing a controller connected to the refrigeration device body and the temperature sensor, the cooling temperature of the energy storage agent can be accurately controlled, which is beneficial to reducing the energy consumption of the refrigeration device.

[0024] In a specific possible implementation scheme, the flow equalizing sleeve includes a sleeve shell, a sliding orifice plate, a flow equalizing conical plug, a flow equalizing spring, a flow equalizing spring seat, a fixed orifice plate and a spring seat top rod, the sliding orifice plate is slidably arranged at the inlet end of the sleeve shell, the sliding orifice plate is provided with a conical flow opening, the flow equalizing conical plug is arranged opposite to the conical flow opening and is fixed on the fixed orifice plate, the flow equalizing spring seat is arranged between the sliding orifice plate and the fixed orifice plate, and is arranged along the inner side wall of the sleeve shell, the flow equalizing spring is arranged between the sliding orifice plate and the flow equalizing spring seat, the fixed orifice plate is provided with a sample flow outlet and a plurality of top rod holes, and the plurality of top rod holes are evenly arranged in the peripheral area of ​​the fixed orifice plate, one end of the spring seat top rod is abutted against the flow equalizing spring seat, and the other end extends to the other side of the fixed orifice plate through the top rod hole, a connecting thread is arranged on the inner side wall of the sleeve shell outlet end, and is connected to the sample input tube through the connecting thread, so that the other end of the spring seat top rod abuts against the end of the sample input tube.

[0025] By adopting the above technical scheme, a sliding orifice plate slidably arranged at the inlet end of the casing can slide in the casing according to the size of the sample pressure, thereby changing the size of the valve port between the tapered flow port and the equalizing tapered plug, thereby reducing the influence of the pressure on the sample flow rate, so that the sample flow rate through the flow path remains stable; by using a spring seat push rod that passes through the push rod hole on the fixed orifice plate and abuts against the equalizing spring seat, the depth of the threaded connection between the casing and the sample input pipe can be adjusted to adjust the elastic force of the equalizing spring, thereby adjusting the flow rate of the sample through the equalizing sleeve.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: The energy storage agent in the cooling box is cooled by the refrigeration device, and then the samples in the multiple sample heat exchange flow paths are cooled by the energy storage agent, so that efficient heat exchange can be formed between the multiple sample heat exchange flow paths and the refrigeration device, and the stability and consistency of the cooling effect of the samples in the multiple sample heat exchange flow paths can be improved by the large heat capacity of the energy storage agent; By arranging a flow equalizing sleeve at the inlet end of the sample input pipe, the influence of the supply pressure of the sample gas on the supply gas flow path can be reduced, the stability of the sample gas flow through the cooling box and the consistency of the sample gas flow through different flow paths can be ensured, and the stability and consistency of the cooling effect of the sample gas in multiple flow paths can be improved; By arranging a heat-averaging gas pipe at the bottom of the cooling box and arranging a gas escape nozzle at the gas escape port of the heat-averaging gas pipe, the gas can slowly enter the gas nozzle body through the throttling hole. When the pressure is sufficient, the sliding blocking rod is pushed to make the gas escape intermittently through the gas outlet to promote the flow of the energy storage agent. While ensuring the temperature uniformity of the energy storage agent, the influence of bubble attachment on the heat transfer effect between the refrigerant evaporator tube and the sample heat exchange tube and the energy storage agent can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of an embodiment of the present application.

[0028] Figure 2 This is a schematic diagram of the internal structure of a cooling box in one embodiment of the present application.

[0029] Figure 3 This is a schematic diagram of another perspective of the interior of the cooling box in one embodiment of the present application.

[0030] Figure 4 This is a schematic diagram of the structure below the cooling box in one embodiment of the present application.

[0031] Figure 5 This is a schematic diagram of the structure of the air escape nozzle in one embodiment of the present application.

[0032] Figure 6 This is a schematic diagram of the structure of a flow equalizing sleeve in one embodiment of the present application.

[0033] Figure 7 This is a control principle diagram of an embodiment of the present application.

[0034] Explanation of the reference numerals: 1. Refrigeration device; 11. Refrigerant evaporation tube; 12. Refrigeration device body; 2. Cooling box; 21. Flow path bracket; 211. Upper crossbeam; 22. Evaporation tube bracket; 221. Lower crossbeam; 23. Input pipe hole; 24. Output pipe hole; 25. Evaporation tube hole; 26. Energy storage agent injection port; 27. Energy storage agent discharge port; 28. Heat equalization gas valve; 29. ​​Liquid level sight glass; 3. Sample heat exchange flow path; 31. Sample input pipe; 32. Sample heat exchange tube; 33. Sample output pipe; 34. Flow equalization sleeve; 341. Sleeve shell; 342. Sliding orifice plate; 3421. Conical flow port; 343. Flow equalization conical plug; 344. Flow equalization spring; 345. Flow equalization spring seat; 346. Fixed orifice plate; 3461. Sample outflow port ; 3462, push rod hole; 347, spring seat push rod; 35, three-way connector; 36, sample output interface; 37, automatic drain; 4, drain pipe; 41, discharge control valve; 5, energy storage agent heat equalization device; 51, heat equalization air pipe; 52, air flow connecting pipe; 53, air escape nozzle; 531, air nozzle body; 5311, blocking rod hole; 5312, air outlet; 5313, throttle hole; 532, sliding blocking rod; 5321, air outlet pressure plate; 5322, compression spring seat; 533, compression spring; 6, rack; 7, controller; 71, temperature sensor. DETAILED DESCRIPTION

[0035] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0036] In the present application, unless otherwise stated, the directions or positional relationships indicated by the directional words such as "up" and "down" used are based on the directions or positional relationships of the near-ground different-angle wind field laser wind measurement radar antenna of the present application during actual use, and the description of the directions and positional relationships of the components in the present application is the same.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] An embodiment of the multi-channel water cooler of the present application is as follows Figures 1 to 7As shown, it includes a refrigeration device 1, a cooling box 2 and a plurality of sample heat exchange flow paths 3. The refrigeration device 1 can be any device that utilizes the evaporation and liquefaction of a refrigerant for refrigeration. A refrigerant evaporator tube 11 is provided in the refrigeration device 1. The refrigerant evaporator tube 11 is provided in the cooling box 2. Driven by the refrigeration device 1, the refrigerant evaporates in the refrigerant evaporator tube 11 and absorbs the heat on the refrigerant evaporator tube to form a refrigeration effect. Before the multi-channel water chiller of the present application works, a certain amount of energy storage agent needs to be injected into the cooling box 2 so that the refrigerant evaporator tube 11 is immersed in the energy storage agent. The energy storage agent can use various suitable liquid materials with large specific heat capacity, such as water, ethylene glycol, etc. When the refrigeration device 1 is working, the refrigerant evaporator tube 11 exchanges heat with the energy storage agent to reduce the temperature of the energy storage agent to a suitable temperature value.

[0039] Each sample heat exchange flow path 3 includes a sample input pipe 31, a sample heat exchange pipe 32 and a sample output pipe 33. The sample input pipe 31 and the sample output pipe 33 are respectively arranged through the wall of the cooling box 2, and a flow equalizing sleeve 34 is arranged at the inlet end of the sample input pipe 31. The sample heat exchange pipe 32 is usually made of a material with good thermal conductivity such as copper. The sample heat exchange pipe 32 is connected between the sample input pipe 31 and the sample output pipe 33. A plurality of sample heat exchange pipes 32 are dispersedly arranged in the cooling box 2. After the energy storage agent is injected into the cooling box 2, the plurality of sample heat exchange pipes 32 are immersed in the energy storage agent.

[0040] The high-temperature sample gas from different sections of the resin synthesis equipment flows into the sample input pipe 31 through one or a group of equalizing sleeves 34 on different flow paths. When flowing through the corresponding sample heat exchange tube 32, the sample heat exchange tube 32 performs heat exchange with the energy storage agent, so that the temperature of the sample gas is quickly reduced to a temperature close to that of the energy storage agent. The cooled sample gas flows out of the cooling box 2 through the sample output pipe 33 and is transported to the analytical instrument for component detection. The equalizing sleeve 34 can reduce the change in the sample gas flow rate caused by the different pressures flowing into the sample input pipe 31 due to the sample gas extraction pressure or the bending of the transport pipeline, and ensure the stability of the cooling effect of the sample gas in the sample heat exchange tube 32 and the consistency of the cooling effect of the sample gas in different sample heat exchange tubes 32. The setting of using a large amount of energy storage agent in the cooling box 2 to absorb the cold energy on the refrigerant evaporation tube 11 and cooling the sample gas in the sample heat exchange tube 32 can reduce the influence of the temperature change of the refrigerant evaporation tube 11 and the sample heat exchange tube 32 on the cooling effect of the sample gas, and improve the stability of the cooling effect of the sample gas.

[0041] In some embodiments of the multi-channel water chiller of the present application, Figure 2 and Figure 3As shown, a plurality of flow path supports 21 are arranged inside the cooling box 2, and the plurality of flow path supports 21 extend to opposite sides of the cooling box 2 in the same direction and are evenly distributed in the cooling box 2. An upper crossbeam 211 is arranged on the upper part of each flow path support 21, and both ends of the upper crossbeam 211 are respectively fixed to the columns at both ends of the flow path support 21.

[0042] A plurality of input pipe holes 23 are arranged on the top wall of the cooling box 2, and the plurality of input pipe holes 23 are divided into a plurality of groups, and each group of input pipe holes 23 is arranged above an upper crossbeam 211. The sample input pipe 31 passes through the input pipe hole 23 and enters the cooling box 2, and is fixed on the corresponding upper crossbeam 211, respectively, to ensure the uniformity of the distribution of the plurality of sample heat exchange pipes 32 in the cooling box 2 and the stability of the position of each sample heat exchange pipe 32.

[0043] Each sample heat exchange tube 32 is fixedly connected to the bottom of a corresponding sample input tube 31, and extends in a spiral shape toward the bottom of the cooling box 2. The spiral structure can increase the flow time of the sample gas in the sample heat exchange tube 32, increase the heat exchange area between the sample gas and the energy storage agent, and improve the cooling effect of the sample gas.

[0044] A plurality of output tube holes 24 are arranged on the bottom wall of the cooling box 2, and each output tube hole 24 is arranged corresponding to an input tube hole 23. The sample output tube 33 is fixedly connected to the bottom of the sample heat exchange tube 32, and one end thereof passes through the output tube hole 24 and extends to the outside of the cooling box 2 to transport the cooled sample gas out. A sealing ring is arranged between the sample output tube 33 and the hole wall of the output tube hole 24, and the sealing ring can prevent the energy storage agent from leaking through the output tube hole 24 outside the sample output tube 33 while limiting the position of the sample output tube 33. The relative arrangement of the output tube hole 24 and the input tube hole 23 on the upper and lower walls of the cooling box 2 can enable the sample heat exchange tube 32 to be arranged vertically in the cooling box 2, so that the sample gas is gradually cooled from the upper part to the lower part of the cooling box. The spirally arranged sample heat exchange tube 32 can buffer the length change of the sample heat exchange flow path caused by thermal expansion and contraction, and ensure the stability of the fixed structure of the sample input tube 31 and the sample output tube 33.

[0045] In a preferred embodiment of the multi-channel water chiller of the present application, Figure 1 and Figure 3 As shown, two evaporation tube holes 25 are provided on one side wall of the cooling box 2, and the refrigerant evaporation tube 11 is arranged in the cooling box 2, winding between each pair of adjacent groups of sample heat exchange tubes 32, and both ends extend out of the cooling box 2 through the evaporation tube holes 25, and are respectively connected to the throttle valve and the inlet of the compressor in the refrigeration device 1.

[0046] Two evaporation tube brackets 22 are arranged in the cooling box 2, and the two evaporation tube brackets 22 are respectively arranged between the two flow path brackets 21 on both sides of the cooling box 2. A lower crossbeam 221 is arranged at the lower part of the evaporation tube bracket 22, and the two side parts of the refrigerant evaporation tube 11 are respectively fixed on the lower crossbeam 221 by fixing clips. The fixing clip has a certain thickness, so that the refrigerant evaporation tube 11 is at a certain distance from the lower crossbeam 221, ensuring that the refrigerant evaporation tube 11 can fully contact with the energy storage agent, thereby improving the heat exchange effect between the refrigerant evaporation tube 11 and the energy storage agent.

[0047] In some embodiments of the multi-channel water chiller of the present application, Figure 4 As shown, a three-way connector 35 is provided at the lower end of the sample output tube 33. The three-way connector 35 is provided at the outer side of the bottom of the cooling box 2, the upper end interface of the three-way connector 35 is connected to the sample output tube 33, the side interface is connected to the sample output interface 36, and the lower end interface is connected to the automatic drainer 37. The cooled sample gas output through the sample output tube 33 is turned in the three-way connector 35 and output to the analysis instrument through the sample output interface 36 for component detection; the condensed water formed by cooling in the sample gas enters the automatic drainer 37 below for collection and discharge, so as to prevent the condensed water from clogging the sample gas delivery pipeline or entering the analysis instrument with the sample gas.

[0048] In a preferred embodiment of the multi-channel water chiller of the present application, Figure 4 As shown, an energy storage agent injection port 26 is provided on one side of the cooling box 2, through which the energy storage agent can be injected into the cooling box 2 as a heat exchange medium for heat transfer between the refrigerant evaporation tube 11 and the sample heat exchange tube 32. A liquid level sight glass 29 is also provided on the upper part of the side wall of the cooling box 2, through which the liquid level height of the energy storage agent added to the cooling box 2 can be observed.

[0049] A drain pipe 4 is provided below the cooling box 2 , and the drain port of each automatic drainer 37 is connected to the drain pipe 4 through a pipeline. The energy storage agent discharged through the automatic drainer 37 flows into the drain pipe 4 and is collected and discharged through the drain pipe 4 .

[0050] An energy storage agent discharge port 27 is also provided on the bottom wall of the cooling box 2. The energy storage agent discharge port 27 is connected to the drain pipe 4 through a pipeline. A discharge control valve 41 is provided on the pipeline connecting the energy storage agent discharge port 27 and the drain pipe 4. The discharge control valve 41 can control the on-off of the pipeline between the energy storage agent discharge port 27 and the drain pipe 4, so that the discharge control valve 41 can be opened after the multi-channel water cooler of the present application stops working to discharge the energy storage agent in the cooling box 2, thereby preventing the energy storage agent from being retained in the cooling box 2 for a long time and accelerating the corrosion of the cooling box 2.

[0051] In some embodiments of the multi-channel water chiller of the present application, Figure 2 As shown, an energy storage agent heat equalizing device 5 is also provided in the cooling box 2. The energy storage agent heat equalizing device 5 can be any device that can promote the flow of the energy storage agent and improve the temperature uniformity of the energy storage agent. The energy storage agent heat equalizing device 5 is provided at the bottom of the cooling box 2, and can drive the energy storage agent to flow from multiple positions of the bottom plate of the cooling box 2, so that the temperature of the energy storage agent at different positions in the cooling box 2 is more uniform.

[0052] In a preferred embodiment of the multi-channel water chiller of the present application, Figure 2 As shown, the energy storage agent heat equalization device 5 includes a heat equalization air pipe 51 and an airflow connecting pipe 52. The heat equalization air pipe 51 is fixed on the bottom wall of the cooling box 2 in a "U" shape, and is arranged between multiple sample output pipes 33. Multiple air escape ports are arranged at intervals on the tube wall of the heat equalization air pipe 51. One end of the airflow connecting pipe 52 is connected to the heat equalization air pipe 51, and the other end passes through the cooling box 2 and is connected to the heat equalization air valve 28 fixed on the side wall of the cooling box 2. The other end of the heat equalization air valve 28 is connected to the high-pressure air source. Under the control of the heat equalization air valve 28, the compressed air in the high-pressure air source enters the heat equalization air pipe 51 through the airflow connecting pipe 52, and escapes through multiple air escape ports, forming bubbles that rise from the bottom of the energy storage agent, stirring the energy storage agent, and improving the uniformity of the temperature of the energy storage agent in the unconnected parts of the cooling box 2.

[0053] As a specific implementation of the multi-channel water cooler of the present application, Figure 2 and Figure 5As shown, an air escape nozzle 53 is provided at each air escape port on the side wall of the heat-averaging air pipe 51, and the air escape nozzle 53 includes an air nozzle body 531, a sliding blocking rod 532 and a compression spring 533. The air nozzle body 531 is in the shape of a hollow cylinder as a whole, and one end of the air nozzle body 531 is provided with a blocking rod hole 5311 and at least one air outlet hole 5312, and the other end is provided with a throttle hole 5313. The end of the air nozzle body 531 where the throttle hole 5313 is located is connected to the heat-averaging air pipe 51, so that the air nozzle body 531 is connected to the heat-averaging air pipe 51 through the throttle hole 5313. One end of the sliding blocking rod 532 is provided with an air outlet pressure plate 5321, and the other end is provided with a compression spring seat 5322. One end of the rod body of the sliding blocking rod 532 passes through the blocking rod hole 5311 and enters the air nozzle body 531, and can slide in the blocking rod hole 5311. The compression spring seat 5322 is fixed to the end of the sliding blocking rod 532 located at one end of the nozzle body 531, and the air outlet pressure plate 5321 is located outside the end of the nozzle body 531. The compression spring 533 is sleeved on the sliding blocking rod 532, one end of the compression spring 533 abuts against the compression spring seat 5322, and the other end abuts against the inner wall of the end of the nozzle body 531. Under the elastic force of the compression spring 533, the air outlet pressure plate 5321 is pressed against the end of the nozzle body 531 to close the air outlet hole 5312. An elastic sealing layer such as rubber can also be provided on one side of the air outlet pressure plate 5321 adjacent to the nozzle body 531 to improve the sealing performance of the air outlet hole 5312 and prevent the energy storage agent from penetrating into the nozzle body through the air outlet hole 5312.

[0054] After opening the equalizing air valve 28, compressed air enters the equalizing air pipe 51 through the air flow connecting pipe 52, and gradually enters the air nozzle body 531 through the throttle hole 5313, so that the air pressure in the air nozzle body 531 gradually increases, and the gas pressure acts on the air outlet pressure plate 5321 through the air outlet hole 5312. When the pressure is greater than the elastic force of the compression spring 533, it can push the sliding blocking rod 532 to slide in the blocking rod hole 5311, so that the air outlet pressure plate 5321 leaves the air outlet hole 5312. At this time, the gas in the nozzle body 531 escapes through the air outlet 5312, forming bubbles that stir the energy storage agent; at the same time, the escape of gas causes the air pressure in the nozzle body 531 to drop at a faster speed, so that the pressure of the gas on the air outlet pressure plate 5321 is less than the elastic force of the compression spring 533, and the sliding blocking rod 532 slides into the nozzle body 531 under the elastic force of the compression spring 533, and the air outlet pressure plate 5321 re-closes the air outlet 5312, and the gas stops escaping. In this way, bubbles can be periodically escaped through the air escape nozzle 53, while stirring the energy storage agent to ensure the uniformity of the energy storage agent temperature, preventing excessive bubbles from hindering the heat exchange between the energy storage agent and the refrigerant evaporation tube 11 and the sample heat exchange tube 32, and can also reduce the energy consumption of compressed air and the energy loss caused by the bubbles taking away the cold energy in the energy storage agent.

[0055] In some embodiments of the multi-channel water chiller of the present application, Figure 1As shown, the multi-channel water chiller of the present application is further provided with a rack 6, and the cooling box 2 is fixed above the rack 6. The rack 6 forms an installation space of a certain size below the cooling box 2, which is convenient for the installation and arrangement of the lower end of the sample output tube 33, the three-way connector 35, the automatic drain 37 and the drain pipe 4 below the cooling box 2.

[0056] The refrigeration device 1 also includes a refrigeration device body 12, in which a compressor, a refrigerant condenser, a throttle valve and a radiator are arranged. The two ends of the refrigerant evaporation tube 11 are respectively connected to the inlet of the compressor and the outlet of the throttle valve, the outlet of the compressor is connected to the refrigerant condenser, and the other end of the refrigerant condenser is connected to the inlet of the throttle valve. The compressor extracts the gaseous refrigerant in the refrigerant evaporation tube 11 and outputs it to the refrigerant condenser for compression. The refrigerant liquefies and releases heat under the high pressure condition in the refrigerant condenser. The radiator is arranged in the refrigerant condenser to dissipate the heat released by the liquefaction of the refrigerant. The liquid refrigerant enters the refrigerant evaporation tube 11 through the throttle valve. After passing through the throttle valve, the pressure in the refrigerant evaporation tube 11 is greatly reduced. The refrigerant vaporizes and absorbs heat under low pressure conditions, so that the temperature of the energy storage agent in the cooling box 2 is reduced.

[0057] The refrigeration device body 12 is fixed on the frame 6 and is located on one side of the cooling box 2. Usually, the refrigeration device body 12 is fixed at a relatively low height to ensure the stability of the position of the frame 6. Universal wheels can also be provided at the bottom of the frame 6 to facilitate moving the multi-channel water chiller of the present application to different analytical instruments for use.

[0058] A controller 7 may also be provided on the cooling box 2. The controller 7 may use any suitable controller such as a PLC or a single chip microcomputer. A temperature sensor 71 is provided in the cooling box 2. The temperature sensor 71 can detect the real-time temperature of the energy storage agent and transmit the detection signal to the controller 7 through a wire. The controller 7 controls the working state of the compressor according to the real-time temperature of the energy storage agent, maintains the temperature of the energy storage agent at a set temperature, and can reduce the energy consumption of the compressor.

[0059] In some embodiments of the multi-channel water chiller of the present application, Figure 6 As shown, the flow balancing sleeve 34 includes a sleeve shell 341, a sliding orifice plate 342, a flow balancing conical plug 343, a flow balancing spring 344, a flow balancing spring seat 345, a fixed orifice plate 346 and a spring seat top rod 347. The sleeve shell 341 is set to be cylindrical, one end of the sleeve shell 341 is connected to the sample input tube 31, and the other end is provided with an input connection port.

[0060] The sliding orifice plate 342 and the fixed orifice plate 346 are respectively arranged at the two end positions in the casing 341, wherein the fixed orifice plate 346 is fixed at the outlet end of the casing 341, and the sliding orifice plate 342 is located at the inlet side of the fixed orifice plate 346, and can slide between the fixed orifice plate 346 and the input connection port. A conical flow opening 3421 is arranged in the middle of the sliding orifice plate 342, and the small end of the conical flow opening 3421 faces the inlet end of the casing 341. The flow-equalizing conical plug 343 is arranged in a truncated cone shape, and the large end of the flow-equalizing conical plug 343 is fixed to the middle of the fixed orifice plate 346 by a fixing rod, so that the small end of the flow-equalizing conical plug 343 passes through the conical flow opening 3421 and is arranged in the conical flow opening 3421.

[0061] The flow-equalizing spring seat 345 is set in a circular ring shape, and is installed between the sliding orifice plate 342 and the fixed orifice plate 346, and the outer wall is set close to the inner wall of the casing 341, so that the flow-equalizing spring seat 345 can slide axially in the casing 341. The flow-equalizing spring 344 is set between the sliding orifice plate 342 and the flow-equalizing spring seat 345, and can simultaneously push the sliding orifice plate 342 to slide toward the input connection port, and push the flow-equalizing spring seat 345 to slide toward the fixed orifice plate 346.

[0062] Several sample flow outlets 3461 and multiple push rod holes 3462 are arranged on the fixed orifice plate 346. The multiple push rod holes 3462 are evenly arranged in the peripheral area of ​​the fixed orifice plate 346 opposite to the end surface of the sample input tube 31. There are multiple spring seat push rods 347, each of which is inserted into a push rod hole 3462 and can slide in the push rod hole 3462. One end of the spring seat push rod 347 abuts against the flow-equalizing spring seat 345, and the other end passes through the fixed orifice plate 346 and abuts against the end surface of the sample input tube 31. A connecting thread is arranged on the inner side wall of the outlet end of the casing 341, and is connected to the sample input tube 31 through the connecting thread. The length of the end of the sample input tube 31 extending into the casing 341 can be adjusted by rotating the casing 341, thereby adjusting the position of the spring seat push rod 347 in the casing 341.

[0063] The sample gas delivered to the input connection port enters the casing 341 through the regulating port formed by the conical flow port 3421 around the flow-equalizing conical plug 343, and flows into the sample input tube 31 through the sample flow port 3461. Since the total flow area of ​​the several sample flow ports 3461 is much larger than the flow area of ​​the regulating port, the pressure of the sample gas in the input connection port is also greater than the pressure in the casing 341, and the pressure pushes the sliding orifice plate 342 to move toward the fixed orifice plate 346, and the movement of the fixed orifice plate 346 compresses the flow-equalizing spring 344, so that the thrust of the flow-equalizing spring 344 on the sliding orifice plate 342 increases and balances with the pressure of the sample gas. At the same time, the movement of the sliding orifice plate 342 toward the fixed orifice plate 346 will reduce the flow area of ​​the regulating port, and reach a stable state after the position of the sliding orifice plate 342 stabilizes.

[0064] When the pressure of the sample gas delivered to the input connection port increases, the sliding orifice plate 342 is pushed to move toward the fixed orifice plate 346, and the flow area of ​​the regulating port is reduced, so that the flow entering the casing 341 through the regulating port remains stable; and when the pressure of the sample gas delivered to the input connection port increases or decreases, the sliding orifice plate 342 moves toward the input connection port under the push of the equalizing spring 344, and the flow area of ​​the regulating port is increased, so that the flow entering the casing 341 through the regulating port remains stable. In this way, the influence of the sample gas supply pressure on the gas supply flow can be reduced, so that the sample gas flow through the sample heat exchange tube 32 remains stable, thereby maintaining the stability of the sample gas cooling effect. The equalizing sleeve 34 is provided on the sample input tube 31 of each sample heat exchange flow path 3, so that the influence of the pressure of the sample gas input into different sample heat exchange flow paths 3 on the flow rate can be reduced, and the balance of the sample gas flow input into different sample heat exchange flow paths 3 can be improved.

[0065] The multi-channel water chiller of the present application can also be used to cool multi-channel liquid samples, or even partial gas samples and partial liquid samples, and also has the above-mentioned effects.

[0066] In the description of the present invention, the description with reference to the terms "one embodiment", "specific embodiment", "preferred embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-channel water cooler, characterized in that: It comprises a refrigeration device (1), a cooling box (2) and a plurality of sample heat exchange flow paths (3); The refrigeration device (1) comprises a refrigerant evaporation tube (11), the refrigerant evaporation tube (11) being arranged in the cooling box (2) so as to cool an energy storage agent filled in the cooling box (2), the sample heat exchange flow path (3) comprising a sample input tube (31), a sample heat exchange tube (32) and a sample output tube (33) which are sequentially connected to each other, a flow equalizing sleeve (34) being arranged at the inlet end of the sample input tube (31), and the sample heat exchange tubes (32) being dispersedly arranged in the cooling box (2) so as to utilize the energy storage agent in the cooling box (2) to cool the sample in the sample heat exchange tubes (32).

2. The multi-channel water chiller according to claim 1, characterized in that: A plurality of flow path supports (21) are arranged at intervals in the cooling box (2), an upper crossbeam (211) is arranged on the upper part of the flow path support (21), a plurality of input pipe holes (23) are arranged on the top wall of the cooling box (2), and the plurality of input pipe holes (23) are arranged in groups above the upper crossbeam (211), the sample input pipe (31) passes through the input pipe hole (23) to enter the cooling box (2) and is fixed on the upper crossbeam (211), the sample heat exchange pipe (32) is arranged in a spiral shape and is connected below the sample input pipe (31), a plurality of output pipe holes (24) corresponding to the input pipe holes (23) are arranged on the bottom wall of the cooling box (2), the sample output pipe (33) is arranged below the sample heat exchange pipe (32) and passes through the output pipe hole (24) to extend outside the cooling box (2), and a sealing ring is arranged between the sample output pipe (33) and the output pipe hole (24).

3. The multi-channel water chiller according to claim 2, characterized in that: An evaporation tube hole (25) is provided on one side of the cooling box (2), and the refrigerant evaporation tube (11) enters the cooling box (2) through the evaporation tube hole (25) and is coiled between each group of sample heat exchange tubes (32). An evaporation tube bracket (22) is provided in the cooling box (2), and the evaporation tube bracket (22) is arranged between the flow path brackets (21). A lower cross beam (221) is provided at the lower part of the evaporation tube bracket (22), and the refrigerant evaporation tube (11) is fixed to the lower cross beam (221) by a fixing clamp.

4. The multi-channel water chiller according to claim 2, characterized in that: A three-way connector (35) is provided at the lower end of the sample output tube (33), a sample output interface (36) is connected to the side of the three-way connector (35), and an automatic liquid drainer (37) is connected to the bottom.

5. The multi-channel water chiller according to claim 4, characterized in that: An energy storage agent injection port (26) is provided on one side of the cooling box (2), an energy storage agent discharge port (27) is provided on the bottom wall of the cooling box (2), a liquid discharge pipe (4) is provided below the cooling box (2), a liquid discharge port of the automatic liquid discharger (37) is connected to the liquid discharge pipe (4), and a discharge control valve (41) is connected between the energy storage agent discharge port (27) and the liquid discharge pipe (4).

6. The multi-channel water chiller according to claim 1, characterized in that: An energy storage agent heat equalizing device (5) is also provided in the cooling box (2), and the energy storage agent heat equalizing device (5) is arranged at the bottom of the cooling box (2).

7. The multi-channel water chiller according to claim 6, characterized in that: The energy storage agent heat equalizing device (5) comprises a heat equalizing air pipe (51) and an airflow connecting pipe (52); the heat equalizing air pipe (51) is fixed to the bottom wall of the cooling box (2), and a plurality of air escape ports are arranged at intervals on the pipe wall; one end of the airflow connecting pipe (52) is connected to the heat equalizing air pipe (51), and the other end passes through the cooling box (2) and is connected to a heat equalizing air valve (28) arranged on the cooling box (2).

8. The multi-channel water chiller according to claim 7, characterized in that: The gas escape port on the heat-averaging gas pipe (51) is connected to a gas escape nozzle (53), the gas escape nozzle (53) comprising a gas nozzle body (531), a sliding blocking rod (532) and a compression spring (533), one end of the gas nozzle body (531) is provided with a blocking rod hole (5311) and a gas outlet hole (5312), and the other end is provided with a throttling hole (5313), one end of the sliding blocking rod (532) is provided with a gas outlet pressure plate (5321), and the other end is provided with a throttling hole (5313). A compression spring seat (5322) is provided at the end, and the sliding blocking rod (532) is arranged through the blocking rod hole (5311), so that the compression spring seat (5322) is located in the air nozzle body (531), and the compression spring (533) is sleeved on the sliding blocking rod (532) and is located between the compression spring seat (5322) and the air nozzle body (531), so that the air outlet pressure plate (5321) closes the air outlet hole (5312).

9. The multi-channel water chiller according to any one of claims 1 to 8, characterized in that: The refrigeration device (1) further comprises a frame (6), wherein the refrigeration device (1) further comprises a refrigeration device body (12), wherein the cooling box (2) and the refrigeration device body (12) are both arranged on the frame (6), wherein the refrigeration device body (12) is arranged on one side of the cooling box (2), and the refrigerant evaporation pipe (11) is connected to the refrigeration device body (12); a controller (7) is arranged on the cooling box (2), a temperature sensor (71) is arranged in the cooling box (2), and the controller (7) is connected to the temperature sensor (71) and the refrigeration device body (12).

10. The multi-channel water chiller according to any one of claims 1 to 8, characterized in that: The flow balancing sleeve (34) comprises a sleeve shell (341), a sliding orifice plate (342), a flow balancing conical plug (343), a flow balancing spring (344), a flow balancing spring seat (345), a fixed orifice plate (346) and a spring seat top rod (347); the sliding orifice plate (342) is slidably arranged at the inlet end of the sleeve shell (341); the sliding orifice plate (342) is provided with a conical flow opening (3421); the flow balancing conical plug (343) is arranged opposite to the conical flow opening (3421) and is fixed to the fixed orifice plate (346); the flow balancing spring seat (345) is arranged between the sliding orifice plate (342) and the fixed orifice plate (346) and is arranged along the inner side wall of the sleeve shell (341); the flow balancing spring (345) is provided with a spring seat top rod (347); 4) is arranged between the sliding orifice plate (342) and the flow-equalizing spring seat (345), the fixed orifice plate (346) is provided with a sample flow outlet (3461) and a plurality of push rod holes (3462), the plurality of push rod holes (3462) are evenly arranged in the peripheral area of ​​the fixed orifice plate (346), one end of the spring seat push rod (347) is in contact with the flow-equalizing spring seat (345), and the other end extends to the other side of the fixed orifice plate (346) through the push rod hole (3462), and a connecting thread is arranged on the inner side wall of the outlet end of the housing (341), and is connected to the sample input tube (31) through the connecting thread, so that the other end of the spring seat push rod (347) is in contact with the end of the sample input tube (31).

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