Oxygen determination probe

Abstract

This utility model discloses an oxygen determination probe, including an upper paper tube, a support fixed inside the upper paper tube, a positive compensation wire and a negative compensation wire embedded in the support, a quartz tube inside the upper paper tube, a positive dipole wire and a negative dipole wire inserted into the quartz tube, the positive dipole wire and the negative dipole wire being connected, the positive dipole wire being connected to the positive compensation wire, and the negative dipole wire being connected to the negative compensation wire, an oxygen cell mounted on the support, the molybdenum needle of the oxygen cell being connected to the negative compensation wire as the negative electrode of the oxygen cell, a positive electrode metal plate of the oxygen cell being connected to the support, the positive electrode metal plate of the oxygen cell contacting the inner wall of the upper paper tube, a metal ring inserted into the upper paper tube and contacting the positive electrode metal plate of the oxygen cell, refractory material being cast inside the upper paper tube, the refractory material covering the lower half of the metal ring, and the quartz tube and the top of the oxygen cell being located above the refractory material. This structure can reduce production costs, reduce resistance during the measurement process, and improve measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of probe technology, specifically to an oxygen determination probe. Background Technology

[0002] An oxygen analyzer is an instrument that uses a matching oxygen probe to perform online measurements on molten iron, molten steel, and other metallic melts. The oxygen analyzer can automatically read the oxygen potential signal, analyze and calculate the content of active oxygen, and can also calculate the content of various equilibrium components through simple operations, and check the measurement records. Measurement results can be obtained quickly on-site.

[0003] Oxygen-concentrated probes are mainly used in the steelmaking process to measure the temperature and oxygen content of molten steel. Currently, oxygen-concentrated probes use a steel tube cast in sand as the outer shell to protect the internal components. The steel tube also serves as the positive electrode of the oxygen cell in the probe. However, the casting process, along with the excessive length of the steel tube and compensating wire, is costly during production. The high-temperature heating required for casting can cause deformation of the internal support and oxidation of metal components, leading to poor contact during measurement. Furthermore, the steel tube, as the positive electrode of the oxygen cell, has high thermal conductivity and high resistance during measurement, resulting in lower measurement accuracy. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a constant oxygen probe. This structure can reduce production costs, decrease resistance during the measurement process, and improve measurement accuracy.

[0005] An oxygen-determining probe includes an upper paper tube, a support fixed inside the upper paper tube, a positive compensation wire and a negative compensation wire embedded in the support, a quartz tube inside the upper paper tube, a positive dipole wire and a negative dipole wire inserted into the quartz tube, the positive dipole wire and the negative dipole wire being connected, the positive dipole wire being connected to the positive compensation wire, and the negative dipole wire being connected to the negative compensation wire, an oxygen cell mounted on the support, the molybdenum needle of the oxygen cell being connected to the negative compensation wire as the negative electrode of the oxygen cell, a positive electrode metal sheet of the oxygen cell being connected to the support, the positive electrode metal sheet of the oxygen cell being in contact with the inner wall of the upper paper tube, a metal ring being inserted into the upper paper tube and in contact with the positive electrode metal sheet of the oxygen cell, a refractory material being cast inside the upper paper tube, the refractory material covering the lower part of the metal ring, and the quartz tube and the top of the oxygen cell being located above the refractory material.

[0006] Preferably, an installation plate is provided inside the upper paper tube, and both the positive and negative compensation wires pass through the installation plate and are fixedly connected to it. A fixing frame is connected to the installation plate, and the quartz tube is fixed to the fixing frame.

[0007] Preferably, the bottom wall of the bracket has a groove, and the bottom ends of both the positive and negative compensation wires enter the groove.

[0008] Preferably, one end of the oxygen battery positive electrode metal sheet is connected to the side wall of the groove, the oxygen battery positive electrode metal sheet passes around the bottom wall of the support and is attached to the side wall of the support and the inner wall of the upper paper tube, and then passes around the top wall of the upper paper tube and is attached to the outer wall of the upper paper tube.

[0009] Preferably, both the positive and negative compensating wires have notches, which can reduce thermal conductivity and make the thermoelectric potential more stable.

[0010] Preferably, the positive electrode metal sheet of the oxygen battery has a wide diameter section in the middle.

[0011] Preferably, a metal protective sleeve is installed on the metal ring, and the top wall of the metal protective sleeve has a through hole.

[0012] Preferably, it also includes a lower paper tube and an outer paper tube, the bottom wall of the upper paper tube contacts the top wall of the lower paper tube, the bottom end of the support enters the lower paper tube, and the outer paper tube is simultaneously fitted onto the upper paper tube and the lower paper tube.

[0013] The beneficial effects of this utility model are reflected in the following: The upper paper tube in this technical solution accommodates the support, making assembly convenient, labor-saving, and energy-saving, and the process is simpler. The paper tube is lower in cost than traditional steel pipes. Interconnected positive and negative dipole wires are inserted into the quartz tube. Positive and negative compensating wires are embedded in the support, forming a thermocouple. An oxygen cell and a positive electrode metal plate are set on the support. The molybdenum needle of the oxygen cell is connected to the negative compensating wire as the negative electrode, and the positive electrode metal plate serves as the positive electrode. In use, the positive electrode metal plate... Both the positive and negative compensation leads are connected to the oxygen analyzer. The positive electrode metal sheet of this oxygen cell replaces the traditional steel pipe as the positive electrode. The positive electrode metal sheet is designed to be small in size, low in cost, and has low resistance, reducing resistance during measurement. The upper paper tube and outer paper tube replace the steel pipe, eliminating the need for a sand casting process. The upper paper tube and outer paper tube also effectively protect the internal components from the thermal conductivity of the molten metal, improving measurement accuracy. Furthermore, by integrating all the structures onto a support, the product size is greatly reduced, minimizing the space required for transportation. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a front sectional view of the present invention.

[0016] In the attached diagram, 1-lower paper tube, 2-upper paper tube, 3-outer paper tube, 4-bracket, 5-positive compensating wire, 6-negative compensating wire, 7-quartz tube, 8-oxygen cell, 9-oxygen cell positive electrode metal sheet, 10-metal ring, 11-metal protective sleeve, 12-mounting plate, 13-fixed bracket, 14-refractory material. Detailed Implementation

[0017] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0018] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0019] Example 1

[0020] like Figure 1 As shown, this embodiment provides an oxygen determination probe, including an upper paper tube 2. A bracket 4 is fixed inside the upper paper tube 2. A positive compensation wire 5 and a negative compensation wire 6 are embedded in the bracket 4. A quartz tube 7 is disposed inside the upper paper tube 2. A positive dipole wire and a negative dipole wire are inserted into the quartz tube 7. The positive dipole wire and the negative dipole wire are connected. The positive dipole wire is connected to the positive compensation wire 5, and the negative dipole wire is connected to the negative compensation wire 6. An oxygen cell 8 is installed on the bracket 4. The molybdenum needle of the oxygen cell 8 is connected to the negative compensation wire 6 as the negative electrode of the oxygen cell. A positive electrode metal sheet 9 of the oxygen cell is connected to the bracket 4. The positive electrode metal sheet 9 of the oxygen cell is in contact with the inner wall of the upper paper tube 2. A metal ring 10 is inserted into the upper paper tube 2 and is in contact with the positive electrode metal sheet 9 of the oxygen cell. A refractory material 14 is cast inside the upper paper tube 2. The refractory material 14 covers the lower part of the metal ring 10. The top of the quartz tube 7 and the oxygen cell 8 are located above the refractory material 14.

[0021] In this embodiment, an upper paper tube 2 is used to house the support 4. The paper tube is less expensive than traditional steel pipes. A quartz tube 7 is used, containing a positive and a negative dipole wire. A positive compensation wire 5 and a negative compensation wire 6 are embedded in the support 4 to form a thermocouple. An oxygen cell 8 and a positive electrode metal sheet 9 are placed on the support 4. The molybdenum needle of the oxygen cell 8 is connected to the negative compensation wire 6 as the negative electrode of the oxygen cell, and the positive electrode metal sheet 9 serves as the positive electrode. In use, the positive electrode metal sheet 9, the positive compensation wire 5, and the negative compensation wire 6 are all connected to the oxygen analyzer. In this way, the positive electrode metal sheet 9 replaces the traditional steel pipe as the positive electrode of the oxygen cell. The positive electrode metal sheet 9 is designed to be small in size, low in cost, and low in resistance, which can reduce resistance and improve measurement accuracy during the measurement process. Furthermore, by integrating all the structures on the support 4, the product size can be greatly reduced, thus reducing the transportation space occupied.

[0022] In this embodiment, a metal ring 10 is arranged to contact the positive electrode metal sheet 9 of the oxygen battery, and together with the positive electrode metal sheet 9, it serves as the positive electrode of the oxygen battery, thereby increasing the contact area between the positive electrode of the oxygen battery and the molten steel and improving the measurement effect of the positive electrode of the oxygen battery.

[0023] In this embodiment, the molybdenum needle of the oxygen cell 8 is welded to the negative electrode compensation wire 6 by means of a metal wire or sheet.

[0024] In this embodiment, an mounting plate 12 is provided inside the upper paper tube 2. The positive compensation wire 5 and the negative compensation wire 6 both pass through the mounting plate 12 and are fixedly connected to the mounting plate 12. A fixing bracket 13 is connected to the mounting plate 12, and the quartz tube 7 is fixed to the fixing bracket 13. In this embodiment, the quartz tube 7 is fixed by the mounting plate 12 and the fixing bracket 13.

[0025] In this embodiment, the bottom wall of the bracket 4 has a groove, and the bottom ends of the positive compensation wire 5 and the negative compensation wire 6 both enter the groove.

[0026] In this embodiment, one end of the oxygen cell positive electrode metal sheet 9 is connected to the side wall of the groove. The oxygen cell positive electrode metal sheet 9 bypasses the bottom wall of the bracket 4 and adheres to the side wall of the bracket 4 and the inner wall of the upper paper tube 2, then bypasses the top wall of the upper paper tube 2 and adheres to the outer wall of the upper paper tube 2. This completes the installation of the oxygen cell positive electrode metal sheet 9. The positive electrode compensation wire 5, the negative electrode compensation wire 6, and the oxygen cell positive electrode metal sheet 9 all enter the groove, facilitating electrical connection with the oxygen analyzer. In this embodiment, two oxygen cell positive electrode metal sheets 9 can be used to further improve the measurement effect of the oxygen cell positive electrode.

[0027] In this embodiment, both the positive compensation conductor 5 and the negative compensation conductor 6 have notches.

[0028] In this embodiment, the positive electrode metal sheet 9 of the oxygen battery has a wide diameter section in the middle.

[0029] In this embodiment, a notch is made in the compensation wire, and the positive electrode metal sheet 9 of the oxygen battery is wide in the middle and narrow on both sides, which can extend the heat conduction path, make the heat conduction slower, and make the thermoelectric potential more stable.

[0030] In this embodiment, a metal protective sleeve 11 is installed on the metal ring 10, and the top wall of the metal protective sleeve 11 has a through hole. The metal protective sleeve 11 is provided in this embodiment to protect the components inside the upper paper tube 2 under normal conditions. The metal protective sleeve 11 will melt during the molten steel measurement process. The through hole in the top wall of the metal protective sleeve 11 allows molten steel to quickly enter the protective cap 2 and contact the measuring components when the metal protective sleeve 11 has not melted during the measurement process.

[0031] The portion of the positive electrode metal sheet 9 and metal ring 10 of the oxygen battery that is cast by the refractory material 14 is protected by the refractory material 14 and will not melt, thus serving as the positive electrode of the oxygen battery.

[0032] This embodiment also includes a lower paper tube 1 and an outer paper tube 3. The bottom wall of the upper paper tube 2 contacts the top wall of the lower paper tube 1, and the bottom end of the bracket 4 enters the lower paper tube 1. The outer paper tube 3 is simultaneously fitted onto both the upper paper tube 2 and the lower paper tube 1. This embodiment provides a lower paper tube 1, an upper paper tube 2, and an outer paper tube 3 to achieve overall installation of the device.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An oxygen determination probe, characterized by The system includes an upper paper tube (2), inside which a bracket (4) is fixed. A positive compensation wire (5) and a negative compensation wire (6) are threaded onto the bracket (4). A quartz tube (7) is installed inside the upper paper tube (2), and a positive dipole wire and a negative dipole wire are threaded into the quartz tube (7). The positive dipole wire is connected to the negative dipole wire, and the positive dipole wire is connected to the positive compensation wire (5). The negative dipole wire is connected to the negative compensation wire (6). An oxygen cell (8) is mounted on the bracket (4). The molybdenum needle is connected to the negative electrode compensation wire (6) as the negative electrode of the oxygen battery. The positive electrode metal sheet (9) of the oxygen battery is connected to the bracket (4). The positive electrode metal sheet (9) of the oxygen battery is in contact with the inner wall of the upper paper tube (2). The metal ring (10) is inserted into the upper paper tube (2) and is in contact with the positive electrode metal sheet (9) of the oxygen battery. The upper paper tube (2) is filled with refractory material (14). The refractory material (14) covers the lower part of the metal ring (10). The top of the quartz tube (7) and the oxygen battery (8) are located above the refractory material (14).

2. The oxygen probe of claim 1, wherein An installation plate (12) is provided inside the upper paper tube (2). The positive compensation wire (5) and the negative compensation wire (6) pass through the installation plate (12) and are fixedly connected to the installation plate (12). A fixing frame (13) is connected to the installation plate (12), and the quartz tube (7) is fixed on the fixing frame (13).

3. The oxygen specific probe of claim 1, wherein, The bottom wall of the bracket (4) has a groove, and the bottom ends of the positive compensation wire (5) and the negative compensation wire (6) both enter the groove.

4. The oxygen-specific probe according to claim 3, wherein One end of the oxygen battery positive electrode metal sheet (9) is connected to the side wall of the groove. The oxygen battery positive electrode metal sheet (9) passes around the bottom wall of the bracket (4) and attaches to the side wall of the bracket (4) and the inner wall of the upper paper tube (2). Then it passes around the top wall of the upper paper tube (2) and attaches to the outer wall of the upper paper tube (2).

5. The oxygen specific probe of claim 1, wherein, Both the positive compensation conductor (5) and the negative compensation conductor (6) have notches.

6. The oxygen specific probe of claim 1, wherein, The positive electrode metal sheet (9) of the oxygen battery has a wide diameter section in the middle.

7. The oxygen specific probe of claim 1, wherein, A metal protective sleeve (11) is installed on the metal ring (10), and a through hole is opened on the top wall of the metal protective sleeve (11).

8. The oxygen specific probe of claim 1, wherein, It also includes a lower paper tube (1) and an outer paper tube (3). The bottom wall of the upper paper tube (2) contacts the top wall of the lower paper tube (1), and the bottom end of the bracket (4) enters the lower paper tube (1). The outer paper tube (3) is simultaneously fitted on the upper paper tube (2) and the lower paper tube (1).

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