Ion rod for flame detection

Abstract

The utility model relates to an ion rod for flame detection, which comprises an ion probe, a ceramic rod and a tail joint, the interior of the ceramic rod is hollow and is used for inserting the ion probe, the tail joint is arranged at the tail of the ceramic rod, the tail of the ion probe is provided with a thread part, the thread part is screwed and fixed with the tail joint, and the tail joint is connected with the ceramic rod. The whole ion probe is installed in a ceramic rod, a clamping sleeve connector is installed on the ceramic rod and can move on the ceramic rod to control the length of the ion rod entering a burner, a ceramic sleeve is further arranged in front of the ceramic rod and located on the ion probe in a sleeved mode, and a blocking piece is arranged in front of the ceramic sleeve and located on the ion probe. And the ceramic sleeve can be limited between the ceramic rod and the separation blade. The flame detector is simple and reasonable in structure, practical, safe and reliable, and can stably detect flame for a long time.

Description

Technical Field

[0001] The utility model belongs to the field of flame detection and relates to an ion rod for flame detection. Background Art

[0002] Boilers are important industrial equipment, widely used in power generation, heating, chemical industry and other fields. Generally, these boilers work continuously for a long time. Whether the boiler burns and the stable combustion state directly affect its safety and efficiency. Therefore, it is extremely important to have a stable flame detection device. The flame detection technologies currently used for boiler burners include:

[0003] 1. Flame detection sensor: This is a type of sensor that mainly monitors the wavelength emitted by the flame to determine whether there is a flame. Common ones are ultraviolet flame detectors, infrared flame detectors and multi-spectrum flame detectors.

[0004] 2. Ordinary flame ionization probe: This mainly uses flame to burn the probe to ionize it and generate a weak current, and then transmits the signal to the controller through the detector to detect the flame.

[0005] Flame detectors: Because they detect flame light, when there are multiple combustion zones, it is difficult to determine which zone is burning or whether all are burning. As long as there is a flame in one zone, it will be detected. Another point is that flame detectors are relatively expensive compared to ion rods.

[0006] Flame ionization probes: When there are multiple combustion zones, ionization probes can be placed in different zones to determine which zone is burning and which is not. However, since they need to be exposed to fire for a long time, existing metal materials are difficult to maintain for such a long time. Under heavy combustion loads, the ionization probes may bend and deform in a short period of time, making it impossible to detect whether a combustion is occurring. Simply shortening the ionization probe length can significantly extend the probe bending time, but the flame detection capability will be limited and the scope of application will be narrowed.

[0007] Therefore, an ion rod for flame detection is designed to overcome the above problems. Utility Model Content

[0008] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide an ion rod for flame detection which has a simple and reasonable structure, is practical, safe and reliable, and can stably detect flames over a long period of time.

[0009] The utility model is realized through the following technical solutions: an ion rod for flame detection, which includes an ion probe, a ceramic rod, and a tail joint. The interior of the ceramic rod is hollow for inserting the ion probe, and a tail joint is arranged at the tail of the ceramic rod. The tail of the ion probe is provided with a threaded portion, and the threaded portion is screwed and fixed with the tail connector so that the entire ion probe is installed in the ceramic rod. A ferrule joint is installed on the ceramic rod, and the ferrule joint can be moved on the ceramic rod to control the length of the ion rod entering the burner. A ceramic sleeve is also sleeved on the front of the ceramic rod and located on the ion probe. A baffle is arranged on the front of the ceramic sleeve and located on the ion probe, which can limit the ceramic sleeve between the ceramic rod and the baffle.

[0010] Preferably, a threaded head is provided at the front end of the ferrule joint, and an annular baffle is provided on the threaded head. After the length of the ferrule joint entering the burner is adjusted, the ferrule joint is fixed by screwing on the annular baffle.

[0011] Preferably, the ceramic sleeve is provided with a plurality of equidistant through holes.

[0012] As a preference, the inner diameter of the ceramic sleeve is slightly larger than the diameter of the ion probe, so that the ion probe can rotate and move in a small range in the ceramic sleeve.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model is equipped with a ceramic sleeve to limit the bending of the ion probe.

[0015] 2. The utility model opens a plurality of small holes around the ceramic sleeve, thereby reducing the original flame intensity of the burning ion probe while maintaining the original flame detection capability.

[0016] 3. The ceramic sleeve of the present invention can move and rotate within a certain range, ensuring that the device still has margin adjustment under various stresses, so as not to cause the ceramic sleeve to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a diagram of the usage state of the utility model. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to more clearly understand the purpose, technical solutions and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "horizontal", and "vertical" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or original referred to must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0021] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1-2 As shown, an ion rod for flame detection includes an ion probe 1, a ceramic rod 2, and a tail joint 3. The ceramic rod 2 is hollow inside for inserting into the ion probe 1, and a tail joint 3 is arranged at the tail of the ceramic rod 2. The tail of the ion probe 1 is provided with a threaded portion (not shown in the figure), which is screwed and fixed with the tail connector 3 so that the entire ion probe 1 is installed in the ceramic rod 2. A ferrule joint 5 is installed on the ceramic rod 2, and the ferrule joint 5 can be moved on the ceramic rod 2 to control the length of the ion rod entering the burner. A ceramic sleeve 6 is also sleeved on the ion probe 1 in front of the ceramic rod 2, and a baffle 7 is arranged on the ion probe 1 in front of the ceramic sleeve 6, which can confine the ceramic sleeve 6 between the ceramic rod 2 and the baffle 7.

[0022] The front end of the ferrule connector 5 is provided with a threaded head 8, which is equipped with an annular baffle 9. After adjusting the length of the ferrule connector for entry into the burner, the annular baffle 9 is screwed on to secure the ferrule connector 5. The ceramic sleeve 6 is provided with multiple equidistant through-holes 4. The inner diameter of the ceramic sleeve 6 is slightly larger than that of the ion probe 1, allowing the ion probe 1 to rotate and move within a small range within the ceramic sleeve 6.

[0023] The working process and working characteristics of this utility model are as follows:

[0024] This utility model uses a ferrule connector to secure the ion probe to the flange, which is then connected to the burner. The tail connector requires a wire to connect to the receiver. When the burner is burning, the flame burns the ion probe, which ionizes and generates a weak current. The receiver amplifies the signal and transmits it to the controller to determine whether the combustion is successful.

[0025] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this utility model shall be covered by the claims of this utility model.

Claims

1. An ionization rod for flame detection, comprising an ionization probe, a ceramic rod, and a tail connector, characterized in that: The interior of the ceramic rod is hollow for inserting into the ion probe, and a tail joint is arranged at the tail of the ceramic rod. The tail of the ion probe is provided with a threaded portion, which is screwed and fixed with the tail connector so that the entire ion probe is installed in the ceramic rod. A ferrule joint is installed on the ceramic rod, and the ferrule joint can be moved on the ceramic rod to control the length of the ion rod entering the burner. A ceramic sleeve is also sleeved on the ion probe in front of the ceramic rod, and a baffle is arranged on the ion probe in front of the ceramic sleeve to confine the ceramic sleeve between the ceramic rod and the baffle.

2. The ionization rod for flame detection according to claim 1, characterized in that: A threaded head is provided at the front end of the ferrule joint, and an annular baffle is provided on the threaded head. After the length of the ferrule joint entering the burner is adjusted, the ferrule joint is fixed by screwing the annular baffle.

3. The ionization rod for flame detection according to claim 1, characterized in that: The ceramic sleeve is provided with a plurality of equidistant through holes.

4. The ionization rod for flame detection according to claim 1, characterized in that: The inner diameter of the ceramic sleeve is slightly larger than the diameter of the ion probe, so that the ion probe can rotate and move in a small range in the ceramic sleeve.

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