Construction method of full-life-cycle management platform for sealing element of large-scale water-turbine generator set

Abstract

The invention relates to a construction method for a full-life-cycle management platform of a sealing element of a large water-turbine generator set, and the method comprises the steps: building a full-life-cycle quality control platform of the sealing element of the water-turbine generator set; the water-turbine generator set sealing element full life cycle quality management and control platform manages data from model selection, purchase, storage, installation, operation, maintenance, scrapping and replacement of sealing elements, and records, stores and evaluates information data in the full life cycle of the sealing elements. Full-life-cycle management platform development is carried out on the sealing elements from seven links of model selection, purchasing, storage, installation, operation, maintenance, scrap replacement and the like so as to comprehensively, systematically and visually monitor and manage the health states of all in-service key sealing elements in real time, and the purposes of improving the sealing quality, reducing the sealing failure rate and prolonging the sealing service cycle are achieved. Therefore, the sealing reliability of the water-turbine generator set is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of hydro-generator set maintenance software, and in particular to a method for constructing a full life cycle management platform for seals of large hydro-generator sets. Background Art

[0002] The sealing status of key parts of a hydro-turbine generator set directly affects the safe and stable operation of the unit and is one of the important guarantees for the safe operation of the unit. Due to the complex service environment, under the influence of stresses such as heat, river water, oil, mechanical load, and hot and cold cycles, aging behaviors such as degradation and cross-linking are inevitable, which may cause cracking, deformation and other sealing failures of the sealing block. At present, the rubber sealing products of river basin power stations have various structural types, a wide variety of specifications, and different performance parameters. There is a lack of sealing performance and remaining life assessment of each seal in the initial state, storage state, installation state, and service state. The sealing status of key parts of a hydro-turbine generator set depends largely on planned maintenance and fault maintenance, and the leakage failure of key seals has a certain degree of randomness and uncontrollability. Therefore, it is necessary to develop a full life cycle management platform to monitor and manage the health status of key seals to ensure the sealing reliability of hydro-turbine generator sets. Summary of the invention

[0003] The present invention provides a method for constructing a full life cycle management platform for seals of large-scale hydro-turbine generator sets, so as to comprehensively, systematically, in real time and visually monitor and manage the health status of all key seals in service, so as to improve the sealing quality, reduce the sealing failure rate, and extend the sealing service cycle, so as to ensure the sealing reliability of the hydro-turbine generator sets.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A method for constructing a full life cycle management platform for seals of large-scale hydro-turbine generator sets, establishing a full life cycle quality control platform for seals of hydro-turbine generator sets, the full life cycle quality control platform for seals of hydro-turbine generator sets manages data from seal selection, procurement, warehousing, installation, operation, maintenance, to scrapping and replacement, and records, stores and evaluates information data throughout the full life cycle of seals.

[0005] The construction of the above-mentioned full life cycle quality control platform for turbine generator set seals is carried out in sequence from five technical support frameworks: background technology research, performance indicator system construction, document system construction, management platform construction and database construction.

[0006] The above-mentioned background technology research technical support framework is based on the functional and reliability requirements of the sealing structure of various parts of the hydro-turbine generator set. It investigates and analyzes the composition and working principle of the sealing structure, the tasks undertaken by the sealing structure, the service environment of the sealing material, and historical failure / maintenance data, and obtains the functional performance and life requirements of the seals in various parts, the mission load profile, the environmental stress profile, and the failure risks and failure characteristics faced by the product during service.

[0007] The data information included in the above-mentioned background technology research technical support framework includes: The composition of each sealing structure of the hydro-turbine generator set and the function of each part, the technical specifications of each seal, the production time and installation time of the seal, the installation environment information of the seal, the mechanical stress data of the seal, and the historical failure / maintenance data of the seal.

[0008] The above-mentioned technical support framework for the construction of the performance indicator system is based on the functional performance and life requirements of the seals in various parts, and decomposes the application requirements of each seal to obtain the performance that needs to be evaluated, including compression performance, tensile performance, liquid resistance, fatigue resistance, process adaptability and environmental adaptability. Then, based on product characteristics and actual needs, test items and test methods are designed to determine the indicator parameters of each item.

[0009] The above-mentioned technical support framework for document system construction is based on the technical support framework for performance indicator system construction. It selects the performance of seals according to performance grading, which is used to formulate the inspection procedures for incoming sealing materials to ensure that the performance of incoming materials meets the requirements; formulates the installation operation guide for sealing materials based on the process adaptability test results and the risks and experience of installation; investigates and verifies the sealing inspection methods, and determines the sealing status inspection specifications; sorts out the failure modes of each sealing structure and the corresponding maintenance processes and methods, and formulates maintenance guidelines corresponding to the failure modes; and masters the analysis methods of failure or degradation of sealing materials through training and practical operation.

[0010] The above-mentioned technical support framework for the construction of the management platform builds service modules from selection, procurement, warehousing, installation, operation, maintenance, to scrapping and replacement, so as to record, store and evaluate the basic information, warehousing history, outbound status, installation location, installation parameters, operating status, remaining life, maintenance data, scrapping information and analysis data of the seals. The management operations of the platform are connected to mobile devices or embedded in other systems.

[0011] The database of the above-mentioned database construction technology support framework includes a database of in-use sealing materials, a database of retired sealing materials, a management document library and an algorithm library; the database is driven by the service life and failure / degradation mechanism of retired sealing materials, continuously optimizes the management document library, and continuously iterates the storage life and service life algorithms to continuously improve the full life cycle management of in-use sealing materials.

[0012] The construction of the above-mentioned quality control platform for the whole life cycle of the turbine generator set seal also includes a technical support framework for the construction of the life model. The technical support framework for the construction of the life model is based on environmental stress factors, combined with the aging behavior and performance indicators of the sealing material, and focuses on the degradation mode and degradation mechanism of the sealing material to establish a failure physical model of the sealing material. The failure physical model includes: a. Arrhenius model, that is, thermal oxidative aging mechanism: ; Where, TTF: working time before failure; K: Boltzmann constant, 1.380469*10-23J / K; Eaa: activation energy; T: Kelvin temperature (Kelvin); b. Hallberg-Peck model, i.e., the mechanism of hygrothermal aging: ; Where, TTF: working time before failure; K: Boltzmann constant 1.380469*1023J / K; Eaa: activation energy; T: Kelvin temperature; n: humidity factor; c. Vibration stress model: ; Where, L is characteristic life; G is the mean square root of acceleration Grms (g); A and B are constants related to factors such as material properties, product design, and failure criteria.

[0013] The present invention provides a device and method for measuring characteristic parameters of a hydro-generator rotor, which can realize real-time and visual monitoring and management of the health status of all key seals in service, so as to improve the sealing quality, reduce the sealing failure rate and extend the sealing service period. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the quality control platform for the entire life cycle of the seal of the hydro-generator set of the present invention; Figure 2 Schematic diagram of the technical support framework for the platform construction of the present invention Figure 1 ; Figure 3Schematic diagram of the technical support framework for the platform construction of the present invention Figure 2 . DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following content will systematically and completely describe the specific technical solutions of the present invention in combination with the drawings provided according to the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] Example: A quality control platform for the entire life cycle of seals for hydro-turbine generator sets. Starting from seven links, including seal selection, procurement, warehousing, installation, operation, maintenance, and scrapping and replacement, it records, stores and evaluates the basic information, initial performance, storage history, installation location, installation parameters, operating status, remaining life, maintenance information, scrapping information, analytical data, etc. of seals, aiming to control the quality and manage the status of each link in the entire life cycle of seals.

[0017] Basic information includes model, specification, supplier, batch number, etc.

[0018] like Figure 1 The following is a schematic diagram of the platform construction framework.

[0019] like Figure 2 As shown in the figure, it is the technical support framework for platform construction; data analysis and utilization are the key to the platform's core value. The effective operation of the platform requires the support of underlying technologies, including sealing material performance index system, incoming material inspection procedures, storage life model, installation operation guide, service status inspection specifications, service life model, failure mode and maintenance guide, failure / retirement workpiece analysis method, etc.

[0020] (1) Background information research Based on the functional and reliability requirements of the sealing structure at key parts of the hydro-turbine generator set, the composition and working principle of the sealing structure, the tasks undertaken by the sealing structure, the service environment of the sealing material, and the historical failure / maintenance data are investigated and analyzed to obtain the functional performance and life requirements of the seals in each part, the typical mission load profile, the environmental stress profile, and the failure risks and failure characteristics faced by the product during service.

[0021] The relevant basic information includes but is not limited to the following: The composition of each sealing structure of the hydro-generator set and the function of each part; Technical specifications of each seal; Production time and installation time of seals; Installation environment information of the seal; Mechanical stress data of seals; Historical failure / repair data of seals.

[0022] (2) Construction of performance indicator system Based on the functional performance and life requirements of seals in various parts, the application requirements of each seal are decomposed to obtain the performance that needs to be evaluated, such as compression performance, tensile performance, liquid resistance, fatigue resistance, process adaptability, environmental adaptability, etc. Then, based on product characteristics and actual needs, specific test items and test methods are designed to determine the index parameters of each item. The performance index system of seals may include the following: Table 1 Sealing material performance system

[0023] (3) Document system construction Based on the sealing material performance system, key performances are screened out according to performance grading, and used to formulate sealing material incoming material inspection procedures to ensure that the incoming material performance meets the requirements; based on the process adaptability test results, combined with the installation risks and experience, a sealing material installation operation guide is formulated; the sealing inspection method is investigated and verified, and the sealing status inspection specification is determined; the failure modes of each sealing structure and the corresponding maintenance processes and methods are sorted out, and maintenance guidelines corresponding to the failure modes are formulated; through training and practical operation, the analysis methods of sealing material failure or degradation are mastered.

[0024] (4) Construction of management platform Focusing on the construction needs of the full life cycle platform, based on the embedded algorithms of various technical systems, we build service modules from selection, procurement, warehousing, installation, operation, maintenance, to scrapping and replacement, so as to record, store and evaluate the basic information, warehousing experience, outbound status, installation location, installation parameters, operating status, remaining life, maintenance data, scrapping information and analysis data of seals. The management operation of the platform can be connected to mobile devices and can also be embedded in other systems.

[0025] (5) Database construction The database includes a database of in-use sealing materials, a database of retired sealing materials, a management document library and an algorithm library; this database is driven by the service life and failure / degradation mechanism of retired sealing materials, continuously optimizes the management document library, and continuously iterates the storage life and service life algorithms to continuously improve the full life cycle management of in-use sealing materials.

[0026] (6) Lifespan model construction Based on sensitive environmental stress factors, combined with the aging behavior and key performance indicators of sealing materials, a failure physical model of sealing materials is established around the degradation mode and degradation mechanism of sealing materials. Typical failure physical models include: a. Arrhenius model, that is, thermal oxidative aging mechanism: ; Where, TTF: working time before failure; K: Boltzmann constant, 1.380469*10-23J / K; Eaa: activation energy; T: Kelvin temperature (Kelvin); b. Hallberg-Peck model, i.e., the mechanism of hygrothermal aging: ; Where, TTF: working time before failure; K: Boltzmann constant 1.380469*1023J / K; Eaa: activation energy; T: Kelvin temperature; n: humidity factor; c. Vibration stress model: ; Where, L is characteristic life; G is the mean square root of acceleration Grms (g); A and B are constants related to factors such as material properties, product design, and failure criteria.

[0027] The accelerated life test design is carried out based on the failure physics model, including the setting of conditions such as the type, number of groups, intensity, sampling interval, etc. of the accelerated environmental test, and the preparation of specimens around key parameters. Then, the accelerated life test is carried out according to the test design, and sampling is carried out at regular intervals to obtain the degradation data of key parameters.

[0028] Based on the failure physics model, a life model with key parameter degradation as an indicator is established. By substituting typical service condition parameters, the storage life and service life algorithm of the sealing material are obtained.

Claims

1. A method for constructing a full life cycle management platform for seals of large hydro-generator sets, characterized in that: Establish a quality control platform for the entire life cycle of hydro-turbine generator set seals. The quality control platform for the entire life cycle of hydro-turbine generator set seals manages data from seal selection, procurement, warehousing, installation, operation, maintenance, to scrapping and replacement, and records, stores and evaluates information data throughout the entire life cycle of seals.

2. According to the method for constructing a full life cycle management platform for seals of large-scale hydro-generator sets as described in claim 1, it is characterized in that: The construction of the full life cycle quality control platform for hydro-turbine generator set seals is carried out in sequence from five technical support frameworks: background technology research, performance indicator system construction, document system construction, management platform construction and database construction.

3. According to the method for constructing a full life cycle management platform for large-scale hydro-generator seals as described in claim 2, it is characterized in that: The background technology research technology support framework is based on the functional and reliability requirements of the sealing structure in various parts of the hydro-turbine generator set. It investigates and analyzes the composition and working principle of the sealing structure, the tasks undertaken by the sealing structure, the service environment of the sealing material, and historical failure / maintenance data to obtain the functional performance and life requirements of the seals in various parts, the mission load profile, the environmental stress profile, and the failure risks and failure characteristics faced by the product during service.

4. According to the method for constructing a full life cycle management platform for large-scale hydro-generator seals as described in claim 3, it is characterized in that: The data information included in the background technology research technical support framework includes: The composition of each sealing structure of the hydro-turbine generator set and the function of each part, the technical specifications of each seal, the production time and installation time of the seal, the installation environment information of the seal, the mechanical stress data of the seal, and the historical failure / maintenance data of the seal.

5. According to the method for constructing a full life cycle management platform for seals of large hydro-generator sets as described in claim 4, it is characterized in that: The technical support framework for the construction of the performance indicator system is based on the functional performance and life requirements of the seals in various parts, and decomposes the application requirements of each seal to obtain the performance that needs to be evaluated, including compression performance, tensile performance, liquid resistance, fatigue resistance, process adaptability and environmental adaptability. Then, based on product characteristics and actual needs, test items and test methods are designed to determine the indicator parameters of each item.

6. According to the method for constructing a full life cycle management platform for large-scale hydro-generator seals as described in claim 5, it is characterized in that: The document system construction technical support framework is based on the performance indicator system construction technical support framework, and the seal performance is screened according to the performance classification, which is used to formulate the sealing material incoming material inspection procedures to ensure that the incoming material performance meets the requirements and formulate the sealing material installation operation guide; Investigate and verify the sealing inspection method to determine the sealing status inspection specifications; sort out the failure modes of each sealing structure and the corresponding maintenance processes and methods, and formulate maintenance guidelines corresponding to the failure modes; through training and practical operations, master the analysis methods of sealing material failure or degradation.

7. According to the method for constructing a full life cycle management platform for large-scale hydro-generator seals as described in claim 6, it is characterized in that: The technical support framework for the construction of the management platform builds service modules from selection, procurement, warehousing, installation, operation, maintenance, to scrapping and replacement, so as to record, store and evaluate the basic information, warehousing experience, outbound status, installation location, installation parameters, operating status, remaining life, maintenance data, scrapping information and analysis data of the seals. The management operations of the platform are connected to mobile devices or embedded in other systems.

8. According to the method for constructing a full life cycle management platform for large-scale hydro-generator seals as described in claim 7, it is characterized in that: The database of the database construction technology support framework includes a database of in-use sealing materials, a database of retired sealing materials, a management document library and an algorithm library; the database is driven by the service life and failure / degradation mechanism of retired sealing materials, continuously optimizes the management document library, and continuously iterates the storage life and service life algorithms to continuously improve the full life cycle management of in-use sealing materials.

9. According to the method for constructing a full life cycle management platform for seals of large hydro-generator sets as described in claim 2, it is characterized in that: The construction of the full life cycle quality control platform for the turbine generator set seals also includes a life model construction technology support framework. The life model construction technology support framework is based on environmental stress factors, combined with the aging behavior and performance indicators of the sealing material, and focuses on the degradation mode and degradation mechanism of the sealing material to establish a failure physical model of the sealing material. The failure physical model includes: a. Arrhenius model, that is, thermal oxidative aging mechanism: ； Where, TTF: working time before failure; K: Boltzmann constant, 1.380469*10-23J / K; Eaa: activation energy; T: Kelvin temperature (Kelvin); b. Hallberg-Peck model, i.e., the mechanism of hygrothermal aging: ； Where, TTF: working time before failure; K: Boltzmann constant 1.380469*1023J / K; Eaa: activation energy; T: Kelvin temperature; n: humidity factor; c. Vibration stress model: ； Where, L is characteristic life; G is the mean square root of acceleration Grms (g); A and B are constants related to factors such as material properties, product design, and failure criteria.

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