Cooling device for dissolved oxygen tester

Abstract

The utility model discloses a cooling device for a dissolved oxygen tester, and belongs to the technical field of dissolved oxygen concentration determination. Comprising a storage part, a cooling part, a detection part and a conveying part, the storage part comprises a storage box for storing an aqueous solution; the detection part is used for detecting the oxygen concentration of the aqueous solution in the storage box; the cooling part comprises a fixing box, an electronic cooler is installed in the fixing box and used for cooling the water solution, the conveying part conveys the cooled water solution into the storage box, a fixing cavity is formed in the fixing box, and the electronic cooler comprises a heat absorption plate installed at the bottom of the fixing cavity and a heat dissipation plate suspended in the fixing cavity. A P-type semiconductor and an N-type semiconductor are arranged between the heat absorption plate and the heat dissipation plate, copper plates are installed between the P-type semiconductor and the heat dissipation plate, between the N-type semiconductor and the heat dissipation plate and between the P-type semiconductor, the N-type semiconductor and the heat absorption plate, and U-shaped grooves which are connected with one another are formed in the heat absorption plate.

Description

Technical Field

[0001] This utility model relates to the field of dissolved oxygen concentration measurement technology, specifically a cooling device for a dissolved oxygen meter. Background Technology

[0002] Currently, oxygen concentration measurement is partially achieved using polarographic sensors. These sensors use gold and silver as the cathode and anode, respectively, with an electrolyte inside the electrodes. The outer surface of the cathode is covered with an oxygen-permeable membrane. A polarization voltage is applied between the anode and cathode. When dissolved oxygen permeates through the membrane to the surface of the gold cathode, a redox reaction occurs on the electrode. The electron flow from the anode to the cathode is then used to represent the measurement signal, i.e., the partial pressure of oxygen in the solution being measured, and thus the oxygen concentration is obtained.

[0003] Temperature has a significant impact on this measurement process. Portable dissolved oxygen analyzers are mostly used to determine the oxygen content in deoxygenated water of boilers in thermal power plants and chemical enterprises. Since the boiler requires a temperature of around 200℃, the condenser should not be turned on for a long time. The HK-258 portable dissolved oxygen analyzer is suitable for a temperature of 45℃, while the temperature of deoxygenated water at normal sampling points is usually above 60℃. Therefore, it affects the accuracy of dissolved oxygen measurement and the balance of measurement time.

[0004] The dissolved oxygen analyzers currently in use measure dissolved oxygen by passing it through a flow cell via an injection tube. Without a cooling device, the measured values ​​are extremely slow to stabilize, the electrodes exhibit sluggish response at high temperatures, the data stabilization time is prolonged, and the electrodes are easily damaged, resulting in passive analytical work. Utility Model Content

[0005] The purpose of this invention is to provide a cooling device for a dissolved oxygen analyzer to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A cooling device for a dissolved oxygen meter includes a storage component, a cooling component, a detection component, and a conveying component.

[0008] Furthermore, the cooling component includes a fixed housing, inside which an electronic cooler is installed for cooling the aqueous solution. The fixed housing has a fixed cavity. The electronic cooler includes a heat-absorbing plate installed at the bottom of the fixed cavity and a heat-dissipating plate suspended inside the fixed cavity. A P-type semiconductor and an N-type semiconductor are disposed between the heat-absorbing plate and the heat-dissipating plate. Copper plates are installed between the P-type semiconductor and the heat-dissipating plate, between the N-type semiconductor and the heat-dissipating plate, and between the P-type semiconductor, the N-type semiconductor, and the heat-absorbing plate. The copper plates connecting the P-type semiconductor, the N-type semiconductor, and the heat-dissipating plate are separately installed, while the P-type semiconductor and the N-type semiconductor... The copper plate connecting the semiconductor and the heat absorber is a single piece. Two separately set copper plates are connected to the power supply to form a circuit. When DC power passes through the P-type semiconductor and the N-type semiconductor, a temperature difference is generated at both ends, i.e., the heat absorber cools and the heat sink heats. The heat absorber has interconnected U-shaped grooves inside. When the aqueous solution is transported into the U-shaped grooves, the heat absorber can absorb heat from the water, thereby completing the cooling of the aqueous solution. At the same time, the U-shaped grooves increase the flow time of the aqueous solution, thereby improving the cooling effect. A temperature sensor is installed in the U-shaped grooves to monitor the temperature of the aqueous solution. The analog signal is converted into a digital signal by the corresponding controller and displayed digitally.

[0009] Furthermore, the conveying component transports the cooled aqueous solution to the storage tank. The conveying component includes a pump installed on the side of the fixed tank. The input end of the pump is connected to the U-shaped groove, and the output end of the pump is connected to the storage tank by a pipe. When the pump is started, it can transport the cooled aqueous solution to the storage tank.

[0010] Furthermore, the storage device includes a storage tank for storing an aqueous solution. The storage tank has a storage cavity and a conical cavity inside. The conical cavity is located below the storage cavity and communicates with the storage cavity. The storage tank has an empty cavity inside. A valve body is installed inside the empty cavity. The input end of the valve body is communicated with the conical cavity. The output end of the valve body is connected to a water outlet pipe. When the valve body is opened, the aqueous solution can flow out of the storage tank through the water outlet pipe using the conical cavity.

[0011] Furthermore, the detection device is used to detect the oxygen concentration of the aqueous solution in the storage tank. The detection device includes an electrode installed in the storage cavity and a dissolved oxygen analyzer located outside the storage tank. The dissolved oxygen analyzer is equipped with a polarographic sensor and is connected to the electrode via a circuit.

[0012] Furthermore, the heat-absorbing plate and the heat-dissipating plate are both ceramic plates.

[0013] Furthermore, a heat insulation plate is installed inside the fixed cavity, and the heat absorption plate and heat dissipation plate are located on both sides of the heat insulation plate. The heat insulation plate separates the heat absorption plate and the heat dissipation plate, preventing the heat dissipation plate from affecting the heat absorption effect of the heat absorption plate.

[0014] Furthermore, a radiator is installed on the top of the fixed cavity, and several air holes are opened on the top surface of the fixed box. The driving end of the radiator can drive the fan blades to rotate, so that the internal air flows out from some of the air holes and the external air enters from other air holes, thereby improving the heat dissipation of the heat sink.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the cooling device for dissolved oxygen analyzers pre-cools the aqueous solution through an electronic cooler, which can effectively reduce the aging rate of the dissolved oxygen analyzer's electrodes, extend the service life of the electrodes, and save production costs. Attached Figure Description

[0016] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0017] Figure 1 This is a three-dimensional structural diagram of a cooling device for a dissolved oxygen analyzer disclosed in an embodiment of the present invention;

[0018] Figure 2 This is a side view of the cooling device for a dissolved oxygen meter disclosed in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the first cross-sectional structure of the cooling device for a dissolved oxygen meter disclosed in an embodiment of the present invention;

[0020] Figure 4 This is a second cross-sectional structural diagram of the cooling device for a dissolved oxygen analyzer disclosed in an embodiment of the present invention;

[0021] Figure 5 This is a third cross-sectional structural diagram of the cooling device for a dissolved oxygen meter disclosed in an embodiment of this utility model.

[0022] In the diagram: 100, storage component; 1001, storage box; 1002, storage cavity; 1003, conical cavity; 1004, cavity; 1005, valve body; 1006, water outlet pipe; 200, cooling component; 2001, fixed box; 2002, fixed cavity; 2003, heat insulation plate; 2004, heat absorption plate; 2005, heat dissipation plate; 2006, P-type semiconductor; 2007, N-type semiconductor; 2008, radiator; 2009, vent; 2010, U-shaped groove; 300, detection component; 3001, electrode; 3002, dissolved oxygen analyzer; 400, conveying component; 4001, pipeline; 4002, pump. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a cooling device for a dissolved oxygen analyzer, comprising a storage component 100, a cooling component 200, a detection component 300, and a conveying component 400.

[0025] In one embodiment of this utility model, the cooling component 200 further includes a fixed box 2001, inside which an electronic cooler is installed for cooling the aqueous solution. A fixed cavity 2002 is formed inside the fixed box 2001. The electronic cooler includes a heat-absorbing plate 2004 installed at the bottom of the fixed cavity 2002 and a heat-dissipating plate 2005 suspended inside the fixed cavity 2002. A P-type semiconductor 2006 and an N-type semiconductor 2007 are disposed between the heat-absorbing plate 2004 and the heat-dissipating plate 2005. Copper plates are installed between the P-type semiconductor 2006 and the heat-dissipating plate 2005, between the N-type semiconductor 2007 and the heat-dissipating plate 2005, and between the P-type semiconductor 2006, the N-type semiconductor 2007, and the heat-absorbing plate 2004. Copper plates are connected between the P-type semiconductor 2006, the N-type semiconductor 2007, and the heat-dissipating plate 2005. The plate is set up separately, while the copper plate connecting the P-type semiconductor 2006, N-type semiconductor 2007, and heat absorber plate 2004 is a whole piece. The two separately set copper plates are connected to the power supply to form a circuit. When DC power passes through the P-type semiconductor 2006 and N-type semiconductor 2007, a temperature difference will be generated at the two ends, that is, the heat absorber plate 2004 cools and the heat dissipation plate 2005 heats. The heat absorber plate 2004 has interconnected U-shaped grooves 2010 inside. When the aqueous solution is transported into the U-shaped grooves 2010, the heat absorber plate 2004 can absorb heat from the water, thereby completing the cooling of the aqueous solution. At the same time, the U-shaped grooves 2010 increase the flow time of the aqueous solution, thereby improving the cooling effect. A temperature sensor is installed in the U-shaped grooves 2010 to monitor the temperature of the aqueous solution. The analog signal is converted into a digital signal by the corresponding controller and displayed digitally.

[0026] As an embodiment of this utility model, the conveying member 400 further conveys the cooled aqueous solution to the storage tank 1001. The conveying member 400 includes a pump 4002 installed on the side of the fixed box 2001. The input end of the pump 4002 is connected to the U-shaped groove 2010, and the output end of the pump 4002 is connected to the storage tank 1001 by a pipe 4001. When the pump 4002 is started, it can convey the cooled aqueous solution to the storage tank 1001.

[0027] As an embodiment of this utility model, the storage component 100 further includes a storage tank 1001 for storing an aqueous solution. The storage tank 1001 has a storage cavity 1002 and a conical cavity 1003 inside. The conical cavity 1003 is located below the storage cavity 1002 and communicates with the storage cavity 1002. The storage tank 1001 has a cavity 1004 inside. A valve body 1005 is installed inside the cavity 1004. The input end of the valve body 1005 communicates with the conical cavity 1003. The output end of the valve body 1005 is connected to a water outlet pipe 1006. After the valve body 1005 is opened, the aqueous solution can flow out of the storage tank 1001 through the water outlet pipe 1006 using the conical cavity 1003.

[0028] As an embodiment of the present invention, the detection element 300 is further used to detect the oxygen concentration of the aqueous solution in the storage tank 1001. The detection element 300 includes an electrode 3001 installed in the storage cavity 1002 and a dissolved oxygen analyzer 3002 located outside the storage tank 1001. The dissolved oxygen analyzer 3002 is equipped with a polarographic sensor and is connected to the electrode 3001 through a line.

[0029] In one embodiment of this utility model, the heat-absorbing plate 2004 and the heat-dissipating plate 2005 are ceramic plates.

[0030] In one embodiment of this utility model, a heat insulation plate 2003 is further installed inside the fixing cavity 2002, and the heat absorption plate 2004 and the heat dissipation plate 2005 are respectively located on both sides of the heat insulation plate 2003. The heat insulation plate 2004 separates the heat absorption plate 2004 and the heat dissipation plate 2005 to prevent the heat dissipation plate 2005 from affecting the heat absorption effect of the heat absorption plate 2004.

[0031] As an embodiment of this utility model, a radiator 2008 is further installed on the top of the fixed cavity 2002, and a plurality of air holes 2009 are opened on the top surface of the fixed box 2001. The driving end of the radiator 2008 can drive the fan blades to rotate, so that the internal air flows out from some of the air holes 2009 and the external air enters from other air holes 2009, thereby improving the heat dissipation of the heat sink 2005.

[0032] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuits of the controller, temperature sensor, pump, valve body and electronic cooler can be implemented by simple programming by those skilled in the art, which are common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

Claims

1. A cooling device for a dissolved oxygen meter, characterized in that, The application relates to a water solution storage and cooling device. The storage part (100) comprises a storage tank (1001) for storing water solution, and the detection part (300) is used for detecting the oxygen concentration of the water solution in the storage tank (1001). The cooling part (200) comprises a fixed tank (2001), the inside of the fixed tank (2001) is provided with an electronic cooler, the electronic cooler is used for cooling the water solution, and the conveying part (400) conveys the cooled water solution into the storage tank (1001).

2. The cooling device for the dissolved oxygen meter according to claim 1, wherein The inside of the fixed tank (2001) is provided with a fixed cavity (2002), the electronic cooler comprises a heat absorbing plate (2004) arranged at the bottom of the fixed cavity (2002) and a heat radiating plate (2005) suspended in the fixed cavity (2002), a P-type semiconductor (2006) and an N-type semiconductor (2007) are arranged between the heat absorbing plate (2004) and the heat radiating plate (2005), copper plates are arranged between the P-type semiconductor (2006) and the heat radiating plate (2005), between the N-type semiconductor (2007) and the heat radiating plate (2005), and between the P-type semiconductor (2006), the N-type semiconductor (2007) and the heat absorbing plate (2004), and the inside of the heat absorbing plate (2004) is provided with U-shaped grooves (2010) connected with each other.

3. The cooling device for the dissolved oxygen meter according to claim 2, characterized in that, The heat absorbing plate (2004) and the heat radiating plate (2005) are ceramic plates.

4. The cooling device for a dissolved oxygen meter according to claim 2, wherein The fixed cavity (2002) is provided with a heat insulation plate (2003), and the heat absorbing plate (2004) and the heat radiating plate (2005) are arranged on the two sides of the heat insulation plate (2003).

5. The cooling device for the dissolved oxygen meter according to claim 2, characterized in that, The top of the fixed cavity (2002) is provided with a heat radiator (2008), and the top surface of the fixed tank (2001) is provided with a plurality of air holes (2009).

6. The cooling device for a dissolved oxygen meter according to claim 2, wherein The conveying part (400) comprises a pump (4002) arranged on the side of the fixed tank (2001), the input end of the pump (4002) is communicated with the U-shaped grooves (2010), and a pipeline (4001) is arranged between the output end of the pump (4002) and the storage tank (1001).

7. The cooling device for a dissolved oxygen meter according to claim 1, wherein The inside of the storage tank (1001) is provided with a storage cavity (1002) and a conical cavity (1003), the conical cavity (1003) is arranged below the storage cavity (1002) and is communicated with the storage cavity (1002), the inside of the storage tank (1001) is provided with a cavity (1004), the inside of the cavity (1004) is arranged with a valve body (1005), the input end of the valve body (1005) is communicated with the conical cavity (1003), and the output end of the valve body (1005) is connected with a water outlet pipe (1006).

8. The cooling device for a dissolved oxygen meter according to claim 7, wherein The detection part (300) comprises an electrode (3001) arranged in the storage cavity (1002) and a dissolved oxygen analyzer (3002) arranged outside the storage tank (1001).

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