Electrode high-temperature protection detector

Abstract

The utility model discloses an electrode high-temperature protection detector, relates to the field of normal-temperature electrode high-temperature protection, aims to solve the problem that a blocking structure is complicated and not easy to clean in the prior art, and adopts the technical scheme that an inner protection tube is connected in an outer protection tube in a sliding manner, and a sensor electrode is mounted on a sensor seat in the inner protection tube; the front end of the sensor seat is connected with a flow cell, and a flow opening is formed in the flow cell and used for allowing a detected object, calibration liquid, purified water and disinfectant to enter the flow cell to be in contact with the sensitive measuring head of the sensor electrode. The front end of the flow cell is connected with a heat insulation bin for isolating heat transfer. According to the technical scheme, the blocking effect is good, the structure is simple, the situation that the content in the tank body leaks before, after and in the process of moving the sensor electrode is avoided, and when the content needs to be changed, due to the fact that the content is only in contact with the heat insulation bin and the flow cell, cleaning is convenient, and pollution is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature protection of normal-temperature electrodes, and particularly relates to a detector for high-temperature protection of electrodes. Background Art

[0002] In order to obtain information such as pH and DO in a biochemical reaction kettle (tank) or a fermenter, detection electrodes need to be used. Although some detection electrodes have the ability to withstand high temperatures, for normal-temperature electrodes, they cannot withstand excessively high temperatures. However, in some special environments, such as a fermenter, which needs to maintain a sterile environment. When the tank body is subjected to CIP cleaning and sterilization, the temperature of the injection water is as high as 80 °C. During the sterilization process, the temperature of the tank body needs to be maintained above 121 °C for at least 20 minutes. At this time, the detection electrodes need to be protected at normal temperature.

[0003] Chinese Patent No. 202410731905.X discloses an electrode high-temperature protection sleeve. The technical solution adopted is that it includes a cooling and cleaning member. The cooling and cleaning member includes a connecting support. An annular cooling cavity is provided inside the connecting support. An out-liquid column and an in-liquid column are respectively provided at the upper end and the lower end of the cooling cavity. An annular cleaning cavity is provided inside the connecting support. A cleaning liquid outlet and a cleaning liquid inlet are respectively provided at the upper end and the lower end of the annular cleaning cavity. An electrode sheath is slidably connected inside the connecting support. The left end of the connecting support is connected with a ball valve by a threaded connection. A through hole corresponding to the outer side of the electrode sheath is provided in the middle of the rotating ball of the ball valve. A seat cover is provided at the left end of the ball valve. An electrode is provided inside the electrode sheath.

[0004] This existing patent uses a ball valve to achieve the connection and blockage between the content in the tank and the electrode sheath. This method not only has a complex structure, but also during the process of rotating the valve core to connect the moving path of the sensor electrode, there will be a situation where the content flow port appears, but the sensor electrode has not been pushed out, and the content in the tank passes through the ball valve, resulting in the pollution of the electrode sheath by the content in the tank and the problem of cumbersome cleaning during the later replacement of the content. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a detector for high-temperature protection of electrodes, which can effectively solve the problems in the background art.

[0006] To achieve the above object, the present utility model discloses an electrode high-temperature protection detector. The technical solution adopted is as follows: It includes an outer protection tube, and there is an inner protection tube inside the outer protection tube. A sensor electrode is connected inside the inner protection tube. The inner protection tube is connected with an electric cylinder. The front end of the outer protection tube is connected with a front protection tube. There is a cooling unit and a disinfection unit on the front protection tube. There is a first sealing ring between the front protection tube and the inner protection tube. The inner protection tube further includes a sensor seat. The sensor electrode is installed in the sensor seat. There is a second sealing ring between the sensor electrode and the sensor seat to prevent the coolant from entering the joint. The front end of the sensor seat is connected with a flow-through cell. The sensor electrode extends into the flow-through cell. A flow-through port is opened on the flow-through cell. The content in the tank can enter the flow-through cell through the flow-through port and contact the sensor electrode to facilitate the detection of the state of the content. There is a heat insulation chamber at the front end of the flow-through cell. The interior of the heat insulation chamber is a closed space. Through the heat insulation chamber, the content in the tank and the flow-through cell are isolated in the non-detection state. The structure is simple, and the situation where the content in the tank enters the outer protection tube will not occur. The rear end of the sensor seat is connected with a rear section. The rear section is of a T-shaped structure. The cable of the sensor electrode passes through the rear section. A controller is also installed on the outer protection tube. The cable and the controller are electrically connected. The detection value and the electrode state can be viewed through the controller, and the electrode can be controlled.

[0007] As a preferred technical solution of the present utility model, the cooling unit further includes a cooling chamber, which is communicated with the interior of the outer protection tube. A coolant inlet and a coolant outlet are connected to the cooling chamber. The coolant can enter the cooling chamber and then enter the outer protection tube to cool the sensor electrode to prevent overheating.

[0008] As a preferred technical solution of the present utility model, the disinfection unit further includes a dynamic disinfection chamber, which is a circular groove opened on the inner wall of the front protection tube and corresponding to the position of the flow-through port. There are also a disinfectant inlet and a disinfectant outlet on the front protection tube, and both are communicated with the dynamic disinfection chamber. When the flow-through port is located at the dynamic disinfection chamber, the disinfectant enters the flow-through cell to disinfect the sensor electrode.

[0009] As a preferred technical solution of the present utility model, a disinfection cotton is installed on the inner wall of the rear end of the front protection tube, and the disinfection cotton is slidably connected with the inner protection tube. It can wipe the inner protection tube.

[0010] As a preferred technical solution of the present utility model, a soft protection tube is installed between the front protection tube and the rear section to prevent the mixing of the refrigerant and the disinfectant.

[0011] Compared with the prior art, the utility model has the following beneficial effects: by arranging a heat-insulating bin at the front end of the circulation pool and arranging a first sealing ring between the front protective tube and the inner protective tube, the utility model can, when the sensor electrode needs to be processed, move the circulation pool away from the tank body, separate the tank body contents from the circulation pool through the heat-insulating bin, and isolate the heat, so as to continue to keep the tank body warm, thereby enabling online processing of the sensor electrode. The heat-insulating bin and the first sealing ring have good blocking effects and a simple structure, and there will be no leakage of the tank body contents before, after, and during the movement of the sensor electrode. When the contents need to be changed, since the contents only contact the heat-insulating bin and the circulation pool, it is easy to clean and prevent contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0013] Figure 2 This is a left-side structural schematic diagram of the utility model;

[0014] Figure 3 This is a schematic diagram of the top view structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of the inner protective tube of the utility model;

[0016] Figure 5 This is a schematic diagram of the post-processing state of the utility model after online use.

[0017] In the figure: 1. inner protective tube; 2. connecting head; 3. front protective tube; 4. outer protective tube; 401, positioning screw; 5. manipulator; 6. soft protective tube; 7. electric cylinder; 8. linkage rod; 9. insulation chamber; 10. circulation pool; 11. circulation port; 12. sensor electrode; 13. sensor seat; 14. rear section; 15. tank wall; 1501, detection pipe mouth; 16. connecting nut; 17. cooling chamber; 1701, coolant inlet; 1702, coolant outlet; 18. disinfectant inlet; 19. disinfectant outlet; 20, pipe plug; 21. dynamic disinfection chamber; 22. disinfection cotton; 23. pipe clamp. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0019] like Figures 1 to 4As shown, the utility model discloses a high-temperature protection detector for electrodes. The adopted technical solution is that it includes an inner protection tube 1 and an outer protection tube 4. As Figure 3 shown, the inner protection tube 1 further includes a sensor base 13. A sensor electrode 12 is installed inside the sensor base 13. The sensor base 13 is in the shape of a sleeve and is sleeved on the sensor electrode 12. A second sealing ring is installed on the inner ring wall of one side of the sensor base 13 close to the front end of the sensor electrode 12. The second sealing ring is a first fluororubber ring. The first fluororubber ring is in contact with the sensor electrode 12 to seal the joint. The front end of the sensor base 13 is connected to a flow-through cell 10, and the rear end is connected to a rear section 14. The rear section 14 is a tubular structure with one end open and the other end having a sealing plate. The sealing plate and the tubular structure together form a T-shaped structure. The cable at the rear end of the sensor electrode 12 passes through the sealing plate, and the open end is sleeved on the sensor base 13. There is a second fluororubber ring between the rear section 14 and the sensor base 13.

[0020] The front end of the sensor base 13 is sleeved with a flow-through cell 10. Flow-through openings 11 are provided on both sides of the flow-through cell 10. The sensitive measurement head of the sensor electrode 12 extends into the flow-through cell 10. The fluid entering the flow-through cell 10 from the flow-through openings 11 can come into contact with the sensor electrode 12. The front end of the flow-through cell 10 is connected to a heat insulation chamber 9 to isolate the heat of the contents in the tank and maintain the heat preservation state of the tank when processing the sensor electrode 12.

[0021] As Figure 4 shown, the inner protection tube 1 is located inside the outer protection tube 4. One end of the outer protection tube 4 close to the front end of the sensor electrode 12 is connected to a front protection tube 3. The outer protection tube 4 is sleeved on the front protection tube 3 and the two are connected by screws. The front protection tube 3 is in sliding contact with the inner protection tube 1. The front end of the front protection tube 3 is an internal thread connection end. There is a first sealing ring on the smooth section of the front protection tube 3 close to the internal thread connection end. The first sealing ring is a third fluororubber ring. The third fluororubber ring is in sliding contact with the inner protection tube 1 to seal the joint. There is a cooling chamber 17 on the side of the front protection tube 3. The cooling chamber 17 is connected to the outer protection tube 4. In order to facilitate the introduction of refrigerant into the cooling chamber 17, a coolant inlet 1701 and a coolant outlet 1702 are also installed on the cooling chamber 17. The coolant inlet 1701 and the coolant outlet 1702 are respectively connected to a refrigerant tank through a refrigerant inlet pipe and a refrigerant outlet pipe. A delivery pump is connected to the refrigerant inlet pipe.

[0022] For the convenience of calibrating and disinfecting the sensor electrode 12, a dynamic disinfection chamber 21 is opened on the inner wall of the front protection tube 3 on the side far from the internal thread connection end. The dynamic disinfection chamber 21 is an annular groove, which corresponds to the position of the circulation port 11. Fourth fluororubber rings are provided on both sides of the dynamic disinfection chamber 21 to prevent leakage. The two sides of the dynamic disinfection chamber 21 are respectively connected to a disinfectant inlet 18 and a disinfectant outlet 19. The disinfectant inlet 18 can be connected to a port of a four-way valve through a liquid inlet pipe. The other three ports of the four-way valve are respectively connected to a disinfectant tank, a calibration liquid tank, and a purified water tank. Valves are connected to the fronts of the disinfectant tank, the calibration liquid tank, and the purified water tank. The disinfectant outlet 19 is connected to a waste liquid tank through a liquid outlet pipe. A peristaltic pump is connected to the liquid inlet pipe. When no pipes are connected to the disinfectant inlet 18 and the disinfectant outlet 19, pipe plugs 20 can be used for plugging first.

[0023] To prevent cross-contamination between the disinfectant and the refrigerant, and considering that the inner protection tube 1 needs to be moved for state switching, a soft protection tube 6 is installed between the inner protection tube 1 and the outer protection tube 4. The two ends of the soft protection tube 6 are respectively fixed to the front protection tube 3 and the rear section 14 by pipe clamps 23. To facilitate wiping the disinfectant adhering to the outer wall of the inner protection tube 1 when it is moved, a disinfection cotton 22 is installed inside the rear end of the front protection tube 3 to wipe the outer surface of the inner protection tube 1.

[0024] For the convenience of controlling the movement of the inner protection tube 1, as Figures 1 to 3 shown, an electric cylinder 7 is installed on the outer wall of the outer protection tube 4. The telescopic end of the electric cylinder 7 is connected to the rear section 14 through a linkage rod 8. The linkage rod 8 is L-shaped to prevent interference with the outer protection tube 4, and the movement of the inner protection tube 1 is controlled by the electric cylinder 7.

[0025] Considering that the relative positions of the inner protection tube 1 and the outer protection tube 4 are relatively fixed most of the time, that is, in the working state or in the post-treatment state. Therefore, in order to enable the inner protection tube 1 to stably stay in the current state, a first threaded hole is opened on the rear section 14, and a second threaded hole and a third threaded hole are opened on the outer protection tube 4. The outer protection tube 4 and the rear section 14 are connected and positioned by using a positioning screw 401. When the inner protection tube 1 extends to the detection state, the second threaded hole corresponds to the first threaded hole. When the inner protection tube 1 retracts to the post-treatment state, the third threaded hole corresponds to the first threaded hole. To prevent refrigerant leakage, plugging bolts can be used to plug the idle threaded holes. The gap between the outer protection tube 4 and the rear section 14 is less than 1 mm to ensure that the rear section 14 can slide inside the outer protection tube 4 while having good sealing performance at the joint, and cooperate with the surface tension of the refrigerant to achieve the sealing of the joint.

[0026] In order to be able to view the detection results and current status of the sensor electrode 12, a controller 5 is also installed on the outer wall of the outer protection tube 4. The controller 5 is a touch screen and contains a microprocessor. The cable of the sensor electrode 12 and the electric cylinder 7 are both electrically connected to the microprocessor of the controller 5.

[0027] In order to be able to connect the front protection tube 3 to the cylinder block, an external thread is provided on the outer wall of the detection pipe orifice 1501 on the tank wall 15, and the joint 2 and the coupling nut 16 are used. The joint 2 is tubular, and its inner diameter is larger than the outer diameters of the heat insulation chamber 9 and the flow cell 10. One end of the joint 2 is provided with an external thread, and the other end is provided with an outer edge. One end of the coupling nut 16 is provided with an internal thread that matches the external thread of the detection pipe orifice 1501, and the other end is provided with an inner edge that matches the outer edge of the joint 2. The external thread of the joint 2 meshes with the internal thread connection end of the front protection tube 3. Sealing grooves are provided at both ends of the joint 2, and a fifth fluororubber ring and a sixth fluororubber ring are installed in the sealing grooves.

[0028] The working principle of the present utility model:

[0029] Install the fifth fluororubber ring and the sixth fluororubber ring in the sealing grooves at both ends of the joint 2, put the coupling nut 16 on the joint 2, so that the inner edge of the coupling nut 16 presses the outer edge of the joint 2, screw the internal thread connection end of the front protection tube 3 onto the joint 2, and press the end face of the end of the joint 2 with the outer edge against the end face of the detection pipe orifice 1501. Rotate the electrode high-temperature protection detector so that the controller 5 faces the appropriate direction. At this time, the coolant inlet 1701 and the disinfectant inlet 18 are at the bottom, and the coolant outlet 1702 and the disinfectant outlet 19 are at the top, ensuring bottom-in and top-out. Screw the coupling nut 16 onto the external thread of the detection pipe orifice 1501 and lock it. Connect the refrigerant inlet pipe to the coolant inlet 1701, connect the refrigerant outlet pipe to the coolant outlet 1702, open the pipe plug 20, connect the liquid inlet pipe to the disinfectant inlet 18, and connect the liquid outlet pipe to the disinfectant outlet 19.

[0030] Operate the controller 5 to start the electric cylinder 7. The electric cylinder 7 contracts and pushes the inner protection tube 1 into the tank wall 15 through the linkage rod 8. After moving a set distance, at this time, the flow port 11 of the flow cell 10 enters the tank through the detection pipe orifice 1501. The first threaded hole on the rear section 14 is opposite to the second threaded hole of the outer protection tube 4, and use the positioning screw 401 to connect the first threaded hole and the second threaded hole to fix the position of the inner protection tube 1. The contents in the tank enter the flow cell 10 through the flow port 11 and come into contact with the sensitive measurement head of the sensor electrode 12 to detect the contents in the tank.

[0031] When the inside of the tank needs to be cleaned and sterilized, during the initial cleaning by introducing purified water, the sensitive detection head of the sensor electrode 12 is maintained inside the tank for the initial cleaning. Before cleaning and sterilizing with injection water, operate the controller 5 to extend the electric cylinder 7 by a set distance, completely retract the inner protection tube 1 into the outer protection tube 4, isolate the contents of the tank and the flow cell 10 through the heat insulation chamber 9. At this time, the first threaded hole on the rear section 14 is opposite to the third threaded hole of the outer protection tube 4, and the circulation port 11 is opposite to the dynamic disinfection chamber 21. Use the positioning screw 401 to connect the first threaded hole and the third threaded hole, and use the plugging bolt to plug the second threaded hole. Then carry out the injection water cleaning and sterilization operation of the tank.

[0032] Start the transfer pump, pump the refrigerant through the refrigerant inlet pipe from the coolant inlet 1701 into the cooling chamber 17. The refrigerant enters between the outer protection tube 4 and the soft protection tube 6 from the cooling chamber 17 to cool down the sensor electrode 12. The refrigerant leaves through the coolant outlet 1702 via the refrigerant outlet pipe.

[0033] Open the valve of the calibration liquid tank, start the peristaltic pump, pump the calibration liquid from the disinfectant inlet 18 into the dynamic disinfection chamber 21. The calibration liquid in the dynamic disinfection chamber 21 enters the flow cell 10 through the circulation port 11, contacts the sensitive measuring head of the sensor electrode 12, and leaves through the disinfectant outlet 19, entering the waste liquid tank through the liquid outlet pipe. Use the flowing calibration liquid to calibrate the sensor electrode 12. After calibration is completed, stop the peristaltic pump.

[0034] Close the valve of the calibration liquid tank, open the valve of the purified water tank, start the peristaltic pump, pump the purified water into the flow cell 10. After contacting the sensitive measuring head of the sensor electrode 12, it enters the waste liquid tank. Use the flowing purified water to clean the flow cell 10 and the sensor electrode 12. After cleaning is completed, stop the peristaltic pump.

[0035] Close the valve of the purified water tank, open the valve of the disinfectant tank, pump the disinfectant into the flow cell 10 to disinfect the circulation port 11, the flow cell 10, and the sensitive measuring head of the sensor electrode 12. The disinfectant is discarded into the waste liquid tank after use. After disinfection is completed, use purified water to clean the flow cell 10 and the sensitive measuring head of the sensor electrode 12 again. After cleaning, close the valve of the purified water tank.

[0036] After the temperature inside the tank drops to normal temperature, extend the inner protection tube 1 into the tank, drain the remaining purified water in the flow cell 10, and conduct a simple rinse of the tank with purified water again to complete the cleaning and disinfection operations of the tank and the high-temperature protection detector of the electrode.

[0037] The circuit and mechanical connections involved in the present utility model are common means adopted by those skilled in the art and can obtain technical inspiration through a limited number of experiments, belonging to common general knowledge.

[0038] Components not described in detail in this article are prior art.

[0039] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrode high-temperature protection detector, comprising an outer protection tube (4), an inner protection tube (1) is arranged inside the outer protection tube (4), a sensor electrode (12) is connected inside the inner protection tube (1), the inner protection tube (1) is connected with an electric cylinder (7), the front end of the outer protection tube (4) is connected with a front protection tube (3), a temperature reduction unit and a disinfection unit are arranged on the front protection tube (3), and a first sealing ring is arranged between the front protection tube (3) and the inner protection tube (1), characterized in that: The inner protection tube (1) further includes a sensor seat (13). The sensor electrode (12) is installed in the sensor seat (13). There is a second sealing ring between the sensor electrode (12) and the sensor seat (13). The front end of the sensor seat (13) is connected to a flow cell (10). The sensor electrode (12) extends into the flow cell (10). A flow port (11) is provided on the flow cell (10). There is a heat insulation chamber (9) at the front end of the flow cell (10). The interior of the heat insulation chamber (9) is a closed space. The rear end of the sensor seat (13) is connected to a rear section (14). The rear section (14) has a T-shaped structure. The cable of the sensor electrode (12) passes through the rear section (14). A controller (5) is also installed on the outer protection tube (4). The cable is electrically connected to the controller (5).

2. The electrode high-temperature protection detector according to claim 1, characterized in that: The temperature reduction unit further includes a temperature reduction chamber (17). The temperature reduction chamber (17) is in internal communication with the outer protection tube (4). A coolant inlet (1701) and a coolant outlet (1702) are connected to the temperature reduction chamber (17).

3. The electrode high-temperature protection detector according to claim 1 or 2, characterized in that: The disinfection unit further includes a dynamic disinfection chamber (21). The dynamic disinfection chamber (21) is an annular groove opened on the inner wall of the front protection tube (3) and corresponding to the position of the flow port (11). There are also a disinfectant inlet (18) and a disinfectant outlet (19) on the front protection tube (3). Both are connected to the dynamic disinfection chamber (21).

4. The electrode high-temperature protection detector according to claim 3, characterized in that: A disinfection cotton (22) is installed on the inner wall of the rear end of the front protection tube (3). The disinfection cotton (22) is slidably connected to the inner protection tube (1).

5. The electrode high-temperature protection detector according to claim 2, characterized in that: A soft protection tube (6) is installed between the front protection tube (3) and the rear section (14).

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