CN-121976151-A - Pressure regulating system of gas permeation device applied to turbine blade

CN121976151ACN 121976151 ACN121976151 ACN 121976151ACN-121976151-A

Abstract

Embodiments of the present disclosure disclose a vapor infiltration device pressure regulation system applied to turbine blades. The system comprises a laminated gas-phase infiltration reaction furnace, wherein a gas inlet is formed in the bottom of the laminated gas-phase infiltration reaction furnace, a gas outlet is formed in the top of the laminated gas-phase infiltration reaction furnace, the laminated gas-phase infiltration reaction furnace comprises a plurality of vertically laminated reaction chambers, adjacent reaction chambers are separated by pressure-equalizing partition plates, the pressure-equalizing partition plates are provided with main flow through holes and self-adaptive pressure relief assemblies, gas passes through the main flow through holes of the pressure-equalizing partition plates to enter the reaction chambers, the self-adaptive pressure relief assemblies can open pressure relief channels when the gas pressure of the reaction chambers below exceeds a target threshold value, a heating cover is coaxially sleeved outside the laminated gas-phase infiltration reaction furnace, an intra-cavity pressure sensor can detect intra-cavity pressure data, a regulating valve is arranged inside an air inlet pipe, the regulating valve and the intra-cavity pressure sensor are in communication connection with a control assembly, and the control assembly can regulate the opening degree of the regulating valve based on the intra-cavity pressure data. This embodiment can improve the coating quality.

Inventors

QIAN YUANJI
ZHENG JIANLIN
JIN HAOTIAN
TANG KAI
NIU XINLEI

Assignees

江苏源清动力技术有限公司

Dates

Publication Date: 20260505
Application Date: 20260409

Claims (7)

1. The pressure regulating system of the gas phase infiltration device applied to the turbine blade is characterized by comprising a laminated gas phase infiltration reaction furnace, a heating cover, an intra-cavity pressure sensor and a control component; The bottom of the laminated gas-phase infiltration reaction furnace is provided with a gas inlet, and the top of the laminated gas-phase infiltration reaction furnace is provided with a gas outlet, so that a bottom-up gas flow channel is formed; the laminated gas-phase infiltration reaction furnace comprises a plurality of vertically laminated reaction chambers, wherein adjacent reaction chambers are separated by pressure-equalizing partition plates, the pressure-equalizing partition plates are provided with main flow through holes and self-adaptive pressure relief assemblies, and gas can enter each reaction chamber through the main flow through holes of each pressure-equalizing partition plate; The self-adaptive pressure relief assembly comprises a pressure relief through hole and a self-weight sealing pressing block, the self-weight sealing pressing block is arranged on the upper surface of the pressure equalizing partition plate and covers the pressure relief through hole, the self-weight sealing pressing block seals the pressure relief through hole through self weight, and when the air pressure of the reaction chamber below exceeds a target threshold value, the self-weight sealing pressing block is jacked by the air pressure to open a pressure relief channel; The heating cover is coaxially sleeved outside the laminated gas-phase infiltration reaction furnace, and a heating cavity is formed between the heating cover and the gas-phase infiltration device; The heating cavity is internally provided with an exhaust port, the exhaust port is communicated with an exhaust pipe, the intra-cavity pressure sensor is communicated with the heating cavity through a pressure measuring bent pipe, and the intra-cavity pressure sensor can detect intra-cavity pressure data; The gas inlet is communicated with the gas inlet pipe, a regulating valve is arranged in the gas inlet pipe, the regulating valve and the intra-cavity pressure sensor are in communication connection with the control assembly, and the control assembly can regulate the opening of the regulating valve based on intra-cavity pressure data.
2. The gas permeation device pressure regulating system for a turbine blade according to claim 1, wherein the adaptive pressure relief assembly further comprises a guide structure by which the deadweight sealing press block is movable in a direction perpendicular to the pressure equalizing partition.
3. The pressure regulating system of a vapor infiltration device for turbine blades according to claim 1, wherein the lowest reaction chamber of the laminated vapor infiltration reaction furnace is an infiltration agent chamber, and an infiltration agent material is placed in the infiltration agent chamber.
4. A gas infiltration device pressure adjustment system for turbine blades according to claim 3, wherein at least one reaction chamber above the infiltration agent chamber is a workpiece reaction chamber, inside which at least one turbine blade is placed.
5. The gas permeation device pressure regulating system applied to a turbine blade according to claim 1, wherein a gas filtering device is arranged at the gas outlet.
6. The pressure regulating system of a vapor infiltration device for turbine blades according to claim 1, wherein an air flow buffer structure is further provided inside the air inlet pipe, the air flow buffer structure being located between the regulating valve and the air inlet.
7. The pressure regulating system of a vapor infiltration device for turbine blades according to claim 1, wherein the air inlet pipe is communicated with an air inlet pressure sensor through a pressure measuring elbow, the air inlet pressure sensor being capable of detecting air inlet pressure data; The exhaust pipe is communicated with an exhaust pressure sensor through a pressure measuring bent pipe, and the exhaust pressure sensor can detect exhaust pressure data; The intake pressure sensor and the exhaust pressure sensor are both communicatively connected to the control assembly, the control assembly being further configured to perform the steps of: comparing the intra-cavity pressure data with a target intra-cavity pressure range to generate a first comparison result; comparing the air inlet pressure data with a target air inlet pressure range to generate a second comparison result; Comparing the exhaust pressure data with a target exhaust pressure range to generate a third comparison result; and executing graded linkage regulation and control on the regulating valve based on the first comparison result, the second comparison result and the third comparison result.

Description

Pressure regulating system of gas permeation device applied to turbine blade Technical Field The embodiment of the disclosure relates to the technical field of vapor infiltration, in particular to a pressure regulating system of a vapor infiltration device applied to turbine blades. Background In the gas phase infiltration (e.g., aluminizing) coating process of turbine blades, in order to ensure coating uniformity and component performance, it is generally necessary to monitor and stably control the working gas pressure inside the reactor during the process. For this purpose, the general method is to install pressure sensors on an intake pipe for feeding process gas to a reaction furnace and an exhaust pipe for discharging exhaust gas, respectively, and to control the overall pressure level in the furnace by monitoring the pressures at these two points and adjusting the opening of an intake valve. However, in practice, it is found that when the pressure in the furnace is controlled by the above method, because the internal space of the reaction furnace is large, pressure gradients are formed at different spatial positions (especially at vertical heights) in the furnace, and particularly in the stacked reaction furnace, when gas enters each layer of chambers through holes in a partition plate between each layer of chambers, significant deviation of the air pressure of each layer of chambers is caused due to flow restriction of the through holes, so that large differences exist in coating thicknesses of workpieces at different heights in the reaction furnace, and the technical problems of low stability and consistency of coating quality are caused. The above information disclosed in this background section is only for enhancement of understanding of the background of the inventive concept and, therefore, may contain information that does not form the prior art that is already known to those of ordinary skill in the art in this country. Disclosure of Invention The disclosure is in part intended to introduce concepts in a simplified form that are further described below in the detailed description. The disclosure is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Some embodiments of the present disclosure propose a gas permeation device pressure regulation system applied to turbine blades to address one or more of the technical problems mentioned in the background section above. Some embodiments of the disclosure provide a pressure regulating system of a gas permeation device applied to turbine blades, the pressure regulating system comprising a laminated gas permeation reaction furnace, a heating cover, a pressure sensor in a cavity and a control component, wherein the bottom of the laminated gas permeation reaction furnace is provided with a gas inlet, the top of the laminated gas permeation reaction furnace is provided with a gas outlet to form a bottom-up gas flow channel, the laminated gas permeation reaction furnace comprises a plurality of vertically laminated reaction chambers, adjacent reaction chambers are separated by pressure equalizing baffles, the pressure equalizing baffles are provided with main flow through holes and self-adaptive pressure relief components, gas can enter the reaction chambers through the main flow through holes of the pressure equalizing baffles, the self-adaptive pressure relief components comprise pressure relief through holes and self-weight sealing press blocks, the self-weight sealing press blocks are arranged on the upper surface of the pressure equalizing baffles and cover the pressure relief through self-weight sealing press blocks, when the gas pressure in the reaction chamber below exceeds a target threshold, the pressure sealing press blocks are jacked by the gas pressure to open the pressure relief channel, the heating cover is coaxially sleeved on the reaction chamber, the heating cover is provided with main flow through the main flow through holes and the pressure equalizing baffles, the pressure sensor is arranged between the pressure equalizing pressure sensor and the pressure regulating component and the pressure sensor is communicated with the pressure regulating component, the pressure sensor can be communicated with the pressure regulating component, the pressure sensor is communicated with the pressure regulating component is formed inside the pressure regulating cavity, the pressure regulating component is communicated with the pressure regulating cavity through the pressure sensor, and adjusting the opening degree of the adjusting valve. Optionally, the self-adaptive pressure relief assembly further comprises a guide structure, and the self-weight sealing pressing block can move along a direction perpendicular to the pressure equalizing partition plate through the guide structure. Optionally, the lowest layer reaction chamber of the