Built-electrode sensor for water level in steam drum

Abstract

The present invention discloses a drum level built-in electrode sensor. It is a boiler drum level measuring device. Its structure is characterized by that the electrode can be fixed and mounted on the position in the drum interior which is required for measurement, on the leading-out box mounted outside of drum the electrode cable can be sealed by means of fixing seat, gasket ring or ring seal and pressure cap, led out and connected to secondary meter. Said device can make the drum level be accurately positioned between two electrodes, so that it can fully monitor the drum level in the process of boiler operation.

Description

Technical field: [0001] The invention relates to a built-in electrode sensor for the water level of a steam drum, which is a device for measuring the water level of a steam drum of a boiler, and belongs to a boiler accessory product. Background technique: [0002] Existing drum water level electrode sensors such as figure 1 , figure 2 As shown, its structure is to connect the cable (7) to the secondary instrument (6) by the electrode core (3-1), the welding cap (3-2), the insulating material (3-3), the porcelain tube ( 3-4) The electrode (3) composed of the fastening cap (3-5) (the number of electrodes is determined by the number of measuring points) is welded to the fixed seat (8) and the gasket on the electric contact water level gauge cylinder (5) (9) It is sealed and installed on the electric contact water level gauge cylinder (5) drawn from the steam side sampling pipe (2) and the water side sampling pipe (4) of the steam drum (1). Measure the water level in the ste...

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Problems solved by technology

Its disadvantages: First, the environment of the electric contact water level gauge cylinder (5) is much different from the environment in the steam drum (1), and is affected by uncertain factors such as ambient temperature and wind direction, so that the electric contact water level gauge cylinder (5) The density of the water inside is uncertain, and its water level is also difficult to keep consistent with the water level in the steam drum (1). There is a large uncertainty, and it is difficult to ensure the accuracy of the measurement. It is not suitable to be installed inside the steam drum (1) because it is installed on the electric contact water level gauge cylinder (5). Third, the sealing installation method of the electrode (3) is unreliable and easy to leak

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