An oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace.

Abstract

This utility model relates to an oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace. The structure consists of a ceramic protective sleeve and an integrated long tubular zirconia oxygen sensor, concentrically mounted and of the same length, fixed to a piston seat. Mounting seats and a rear cover are fixed to both ends of a metal housing. A piston seat and a spring are sequentially installed inside the metal housing. One end of the spring presses against the piston seat, and the other end presses against the rear cover. The piston seat drives the ceramic protective sleeve and the integrated long tubular zirconia oxygen sensor, which pass through the mounting seat, to slide together along the metal housing. This zirconia oxygen probe can be directly inserted into the high-temperature zone of a glass furnace to accurately measure the residual oxygen concentration within the furnace. The design of the integrated long tubular zirconia sensor and ceramic protective sleeve ensures the stability and durability of the sensor under high-temperature conditions. The spring structure within the metal housing effectively eliminates the influence of thermal expansion and contraction on the oxygen probe structure, further improving the reliability and service life of the oxygen probe.

Description

Technical Field

[0001] This utility model relates to the technical field of glass furnace measuring equipment, specifically to an oxygen probe that can be inserted into the high-temperature zone of a glass furnace to measure the oxygen concentration inside the furnace online. Background Technology

[0002] In the glass furnace production process, accurately measuring the residual oxygen concentration within the furnace is crucial for ensuring glass product quality and optimizing production processes. Currently, existing oxygen probes, limited by sensor materials and probe structure, can only measure residual oxygen content in low-temperature zones or even within the flue, presenting several problems. For example, they cannot penetrate deep into high-temperature zones for accurate measurements, resulting in significant discrepancies between measured data and actual values. Some sensors have flawed designs, making them susceptible to damage due to thermal expansion and contraction at high temperatures, leading to decreased measurement accuracy and shortened lifespan. Furthermore, existing oxygen probe protection measures are inadequate, making the sensors vulnerable to the harsh furnace environment, further impacting measurement accuracy and stability. Therefore, developing a high-temperature oxygen probe that can be directly inserted into the high-temperature zone of a glass furnace, possesses excellent high-temperature resistance, structural stability, and accurate measurement capabilities, is essential. Summary of the Invention

[0003] This invention aims to solve the problem that existing oxygen probes cannot stably and accurately measure residual oxygen concentration in the high-temperature zone of glass furnaces, including defects such as insufficient sensor length, susceptibility to high-temperature damage, and inadequate protection measures. Therefore, this invention provides an oxygen probe that can be inserted directly into the high-temperature zone of a glass furnace to measure the oxygen concentration in the furnace chamber online.

[0004] The present invention adopts the following technical solution:

[0005] An oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace is characterized by comprising an integrated long tubular zirconia oxygen sensor, a ceramic protective sleeve, a metal shell, a piston seat, a spring, a mounting base, a rear cover, and a porous ceramic support filter block.

[0006] The integrated long tubular zirconia oxygen sensor is a long tubular structure sintered from a front zirconia tube and a rear 99% ceramic corundum high-temperature ceramic tube, with the front end closed and the rear end open.

[0007] The ceramic protective sleeve is concentrically installed with the integrated long tubular zirconia oxygen sensor and has the same length. The top of the head is closed, and a porous ceramic support filter block and several vent holes are installed on the inner wall. The rear end is fixed on the piston seat together with the integrated long tubular zirconia oxygen sensor 1.

[0008] The metal housing is a hollow structure with a mounting base fixed at one end and a rear cover fixed at the other end. A piston seat and a spring are installed inside the metal housing in sequence. One end of the spring presses against the piston seat and the other end presses against the rear cover. The piston seat drives the ceramic protective sleeve passing through the mounting base and the integrated long tubular zirconia oxygen sensor to slide together along the metal housing.

[0009] The mounting base is provided with a mounting flange or threaded joint for fixing the oxygen probe of this utility model to the outer wall of the kiln.

[0010] The integrated long tubular zirconia oxygen sensor has a length of 1000-1600 mm.

[0011] The front end of the integrated long tubular zirconia oxygen sensor rests against one side of the porous ceramic support filter block.

[0012] The vent is located at an appropriate position at the head of the ceramic protective sleeve, ensuring that the furnace gas comes into contact with the integrated long tubular zirconia oxygen sensor to measure the oxygen content.

[0013] The beneficial effects of this invention are as follows: The zirconia oxygen probe of this invention can be directly inserted into the high-temperature zone of a glass furnace to accurately measure the residual oxygen concentration inside the furnace. The integrated long tubular zirconia sensor and ceramic protective sleeve design ensure the stability and durability of the sensor under high-temperature conditions. The spring structure inside the metal housing effectively eliminates the influence of thermal expansion and contraction on the oxygen probe structure, further improving the reliability and service life of the oxygen probe. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the installation of this utility model in a glass kiln. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments.

[0017] like Figure 1 As shown, an oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace is characterized by comprising an integrated long tubular zirconia oxygen sensor 1, a ceramic protective sleeve 2, a metal shell 3, a piston seat 4, a spring 5, a mounting base 6, a rear cover 7, and a porous ceramic support filter block 13.

[0018] The integrated long tubular zirconia oxygen sensor 1 is formed by sintering a front zirconia tube 11 and a rear 99% ceramic corundum high-temperature ceramic tube 12 into an integrated long tubular structure, with the front end closed and the rear end open; the length of the integrated long tubular zirconia oxygen sensor 1 in this specific embodiment of the utility model is 1200mm.

[0019] The ceramic protective sleeve 2 is concentrically installed with the integrated long tubular zirconia oxygen sensor 1 and has the same length. The top of the sleeve is closed, and a porous ceramic support filter block 13 and several vent holes 21 are installed on the inner wall. The rear end is fixed to the piston seat 4 together with the integrated long tubular zirconia oxygen sensor 1. The front end of the integrated long tubular zirconia oxygen sensor 1 rests against one side of the porous ceramic support filter block 13. The vent holes 21 are located at an appropriate position at the head of the ceramic protective sleeve 2 to ensure that the furnace gas contacts the integrated long tubular zirconia oxygen sensor 1 to measure the oxygen content.

[0020] The metal housing 3 is a hollow structure, with a mounting base 6 fixed at one end and a rear cover 7 fixed at the other end. A piston seat 4 and a spring 5 are sequentially installed inside the metal housing 3. One end of the spring 5 presses against the piston seat 4 and the other end presses against the rear cover 7. The piston seat 4 drives the ceramic protective sleeve 2 that passes through the mounting base 6 and the integrated long tubular zirconia oxygen sensor 1 to slide together along the metal housing 3.

[0021] The mounting base 6 is provided with a mounting flange or threaded joint (not shown in the figure) for fixing the oxygen probe of this utility model to the outer wall of the kiln.

[0022] like Figure 2 As shown, when using the oxygen probe of this utility model, the oxygen probe is inserted into the furnace through the opening in the furnace wall, so that the integrated long tubular zirconia oxygen sensor 1 and the ceramic protective sleeve 2 at the front end are placed in the high temperature zone. The integrated long tubular zirconia oxygen sensor 1 is in direct contact with the furnace gas to measure the oxygen content; the metal shell 3 at the rear end of the oxygen probe remains outside the furnace and is fixed to the furnace wall by the mounting flange or threaded joint on the mounting base 6.

[0023] When the furnace temperature rises, the integrated long tubular zirconia oxygen sensor 1 and the ceramic protective sleeve 2 will undergo thermal expansion. At this time, the spring 5 inside the metal housing 3 pushes the piston 4 forward, which in turn pushes the integrated long tubular zirconia oxygen sensor 1 and the ceramic protective sleeve 2 forward, effectively eliminating the influence of thermal expansion on the oxygen probe structure and ensuring the structural integrity of the oxygen probe and the accuracy of the measurement.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace, characterized in that: It includes an integrated long tubular zirconia oxygen sensor (1), a ceramic protective sleeve (2), a metal housing (3), a piston seat (4), a spring (5), a mounting base (6), a rear cover (7), and a porous ceramic support filter block (13). The integrated long tubular zirconia oxygen sensor (1) is an integrated long tubular structure sintered from a front zirconia tube (11) and a rear 99% ceramic corundum high-temperature ceramic tube (12), with the front end closed and the rear end open. The ceramic protective sleeve (2) is installed concentrically with the integrated long tubular zirconia oxygen sensor (1) and has the same length. The top of the head is closed, and a porous ceramic support filter block (13) and several vent holes (21) are installed on the inner wall. The rear end is fixed together with the integrated long tubular zirconia oxygen sensor (1) on the piston seat (4). The metal housing (3) is a hollow structure. One end is fixed to the mounting base (6), and the other end is fixed to the rear cover (7). The piston seat (4) and spring (5) are installed in sequence inside the metal housing (3). One end of the spring (5) presses against the piston seat (4), and the other end presses against the rear cover (7). The piston seat (4) drives the ceramic protective sleeve (2) passing through the mounting base (6) and the integrated long tubular zirconia oxygen sensor (1) to slide together along the metal housing (3).

2. The oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace according to claim 1, characterized in that: The mounting base (6) is provided with a mounting flange or threaded joint.

3. The oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace according to claim 1, characterized in that: The integrated long tubular zirconia oxygen sensor (1) has a length of 1000-1600mm.

4. The oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace according to claim 1, characterized in that: The front end of the integrated long tubular zirconia oxygen sensor (1) rests against one side of the porous ceramic support filter block (13).

5. The oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace according to claim 1, characterized in that: The vent (21) is located at an appropriate position at the head of the ceramic protective sleeve (2).

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