External rotating speed measuring device of primary helium fan
A main helium fan, rotational speed measurement technology, applied in the direction of the device using the electric/magnetic method, can solve the problems of unsteady operation, distortion or deviation of the main helium fan, shutdown, etc., to improve the stable operation ability and anti-interference The effect of strong ability and large measuring range
Pending Publication Date: 2022-01-04
HUANENG SHANDONG SHIDAO BAY NUCLEAR POWER CO LTD
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Problems solved by technology
[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the main helium fan is easily shut down and unable to run stably due to the distortion or deviation of the speed signal, so as to provide an external type of main helium fan Speed measuring device
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[0033] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention belongs to the technical field of high-temperature reactor primary helium fans and relates to an external rotating speed measuring device of a primary helium fan. The device comprises a gear disc which sleeves a rotor of an impeller and rotates synchronously with the rotor, a supporting seat which is fixed on an impeller case, and is located at the same height as the gear disc, and a detection element which is fixed on the supporting seat, is arranged opposite to the gear disc and is used for detecting the rotating speed of the gear disc and sending a rotating speed signal of the gear disc to the outside. According to the above arrangement, when the original rotating speed sensor of the primary helium fan is abnormal, whether the rotor of the impeller rotates normally or not can be measured through the external rotating speed measuring device, so that stable operation of the primary helium fan equipment under the abnormal working condition is guaranteed.
Description
technical field [0001] The invention relates to the technical field of a main helium blower for a high temperature reactor, in particular to an external rotation speed measuring device for a main helium blower. Background technique [0002] The main helium fan equipment of the high-temperature reactor is an important equipment for the primary circuit of the nuclear island. It is a vertical centrifugal fan with high power, high temperature thermal state, and supported by an electromagnetic bearing structure. It boosts the primary circuit coolant (helium) and drives it. Circulating in the primary circuit, the heat generated by the reactor core is taken out, and the heat is exchanged through the steam generator to generate steam to drive the turbogenerator to generate electricity. [0003] The existing main helium blower is equipped with electromagnetic bearings, and the electromagnetic bearings are equipped with integrated position sensors and speed sensors. The relevant posit...
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Login to View More IPC IPC(8): G01P3/44
CPCG01P3/44
Inventor 于帆张喜林张亚朴刘从敏
Owner HUANENG SHANDONG SHIDAO BAY NUCLEAR POWER CO LTD