CN114151179B - Diameter reduction precision improving method of post-treatment catalytic unit, diameter reduction system and main control device - Google Patents
Diameter reduction precision improving method of post-treatment catalytic unit, diameter reduction system and main control device Download PDFInfo
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- CN114151179B CN114151179B CN202111295697.6A CN202111295697A CN114151179B CN 114151179 B CN114151179 B CN 114151179B CN 202111295697 A CN202111295697 A CN 202111295697A CN 114151179 B CN114151179 B CN 114151179B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The application relates to a post-treatment catalytic unit reducing precision improving method, a reducing system and a main control device, wherein the post-treatment catalytic unit comprises a catalyst carrier, a gasket and a cylinder body, and the post-treatment catalytic unit comprises the following steps: acquiring a diameter reducing compensation diameter value; measuring the catalyst carrier, the gasket and the cylinder, and calculating the diameter-reduced theoretical diameter value of the post-treatment catalytic unit; summing the diameter-reducing theoretical diameter value of the post-treatment catalytic unit and the diameter-reducing compensation diameter value to obtain a diameter-reducing target diameter value of the post-treatment catalytic unit; and carrying out diameter reduction treatment on the catalyst carrier, the gasket and the cylinder body according to the diameter reduction target diameter value of the post-treatment catalytic unit to obtain the post-treatment catalytic unit. This application can promote aftertreatment catalytic unit's undergauge precision, improves the product percent of pass.
Description
Technical Field
The application relates to the technical field of post-treatment, in particular to a method for improving the diameter reduction precision of a post-treatment catalytic unit, a diameter reduction system and a main control device.
Background
The diameter reducing process of the post-treatment catalytic unit is commonly used for manufacturing a sub-assembly of the post-treatment catalytic unit of an engine, horizontal pressure pointing to the circle center can be generated through a wedge-shaped structure of an outer die and an inner die, the horizontal pressure drives a diameter reducing die clack to move and surround, pressure is applied to a catalytic unit cylinder, the diameter area of the cylinder plastically deforms the diameter of a stainless steel cylinder to the range of the required diameter size of a product under the action of applied external force, and therefore three different parts, namely a catalyst carrier, a gasket and the stainless steel cylinder, are combined into a whole.
In some related technical schemes, the manufactured post-treatment catalytic unit has the condition that the diameter reduction size does not meet the quality requirement, so that potential defective products are formed, and the function and the mechanical property of the assembly for treating the tail gas of the engine are influenced.
Disclosure of Invention
The embodiment of the application provides a diameter-reducing precision improving method, a diameter-reducing system and a main control device for an aftertreatment catalytic unit, which can improve the diameter-reducing precision of the aftertreatment catalytic unit and improve the product percent of pass.
In a first aspect, a method for improving the diameter reduction precision of a post-treatment catalytic unit is provided, wherein the post-treatment catalytic unit comprises a catalyst carrier, a gasket and a cylinder body, and the method comprises the following steps:
acquiring a diameter reducing compensation diameter value;
measuring the catalyst carrier, the gasket and the cylinder, and calculating the diameter-reduced theoretical diameter value of the post-treatment catalytic unit;
summing the diameter-reducing theoretical diameter value of the post-treatment catalytic unit and the diameter-reducing compensation diameter value to obtain a diameter-reducing target diameter value of the post-treatment catalytic unit;
and carrying out diameter reduction treatment on the catalyst carrier, the gasket and the cylinder body according to the diameter reduction target diameter value of the post-treatment catalytic unit to obtain the post-treatment catalytic unit.
In some embodiments, when the aftertreatment catalytic unit is an nth piece and n =1, the reduced diameter compensation diameter value is empirically given by the equipment commissioning measurement based on manufacturing errors of the reduced diameter equipment, measurement errors of the retesting equipment, and deviations from elastic deformation of the aftertreatment catalytic unit.
In some embodiments, when the aftertreatment catalytic unit is an nth piece and n =1, the reduced diameter compensation diameter value ranges from 0.4mm to 0.8mm.
In some embodiments, when the aftertreatment catalytic unit is an nth piece and n =1, the reduced diameter compensation diameter value is 0.6mm.
In some embodiments, when the aftertreatment catalytic unit is the nth part and n is greater than or equal to 2, the step of obtaining the value of the reduced diameter compensation diameter comprises the following steps:
retesting the n-1 th post-treatment catalytic unit, and calculating a retested actual diameter value of the n-1 th post-treatment catalytic unit;
subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value;
summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error;
and (4) carrying out quotient on the nth accumulated error and n-1 to obtain the diameter reducing compensation value of the nth post-treatment catalytic unit.
In some embodiments, when n =2, the first accumulated error is set to 0.
In a second aspect, a diameter reduction system for an aftertreatment catalytic unit including a catalyst support, a mat, and a cartridge is provided, comprising:
the control equipment is used for acquiring a diameter reducing compensation diameter value;
retesting equipment for measuring the catalyst support, the gasket, and the cylinder prior to diameter reduction; and (c) a second step of,
the control equipment is also used for calculating data obtained by measuring the catalyst carrier, the gasket and the cylinder body before diameter reduction by the retesting equipment to obtain a diameter reduction theoretical diameter value of the post-treatment catalytic unit, and summing the diameter reduction theoretical diameter value of the post-treatment catalytic unit and the diameter reduction compensation diameter value to obtain a diameter reduction target diameter value of the post-treatment catalytic unit;
and the diameter reducing device is used for reducing the diameter of the catalyst carrier, the gasket and the cylinder according to the diameter reducing target value of the post-treatment catalytic unit to obtain the post-treatment catalytic unit.
In some embodiments, the retest device is further configured to retest the resulting post-treatment catalytic unit after completion of the diameter reduction;
the control device has a pre-stored diameter reduction compensation diameter value for the first aftertreatment catalytic unit, the control device further configured to:
recording the ordinal number n of the post-treatment catalytic unit corresponding to the catalyst carrier, the gasket and the cylinder measured by the retesting equipment;
reading the recorded ordinal number n;
when n =1, calling a pre-stored diameter shrinkage compensation diameter value of the first post-treatment catalytic unit, and summing the diameter shrinkage compensation diameter value with a diameter shrinkage theoretical diameter value of the post-treatment catalytic unit to obtain a diameter shrinkage target diameter value of the post-treatment catalytic unit;
when n is larger than or equal to 2, calling retest equipment to retest data of the (n-1) th post-treatment catalytic unit obtained after the diameter reduction is finished, and calculating to obtain a retest actual diameter value of the (n-1) th post-treatment catalytic unit; subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value; summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error; carrying out quotient on the nth accumulated error and n-1 to obtain a diameter reducing compensation diameter value of the nth post-treatment catalytic unit; and summing the diameter-reducing compensation diameter value of the nth post-treatment catalytic unit and the diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain the diameter-reducing target diameter value of the nth post-treatment catalytic unit.
In some embodiments, when n =1, the reduced diameter compensation diameter value ranges from 0.4mm to 0.8mm;
when n =2, the first cumulative error value is set to 0.
In a third aspect, there is provided a main control device of the diameter reducing system of the post-treatment catalytic unit, which runs on the control device, and includes:
the storage module is prestored with the diameter reducing compensation diameter value of the first post-treatment catalytic unit;
the counting module is used for recording the ordinal number n of the post-treatment catalytic unit corresponding to the catalyst carrier, the gasket and the cylinder which are measured by the retesting equipment;
a calculation module to:
calculating data obtained by measuring the catalyst carrier, the gasket and the cylinder body before diameter reduction by the re-measuring equipment to obtain a diameter reduction theoretical diameter value of the post-treatment catalytic unit;
-reading the ordinal number n recorded by the counting module;
when n =1, calling a diameter-reducing compensation diameter value of the first post-treatment catalytic unit prestored in a storage module, and summing the diameter-reducing compensation diameter value and a diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain a diameter-reducing target diameter value of the post-treatment catalytic unit;
when n is larger than or equal to 2, calling retest equipment to retest data of the (n-1) th post-treatment catalytic unit obtained after the diameter reduction is finished, and calculating to obtain a retest actual diameter value of the (n-1) th post-treatment catalytic unit; subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value; summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error; carrying out quotient on the nth accumulated error and n-1 to obtain a diameter reducing compensation diameter value of the nth post-treatment catalytic unit; and summing the diameter-reducing compensation diameter value of the nth post-treatment catalytic unit and the diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain the diameter-reducing target diameter value of the nth post-treatment catalytic unit.
The beneficial effect that technical scheme that this application provided brought includes:
(1) The method comprises the steps of measuring a catalyst carrier, a gasket and a cylinder body through retesting equipment, further calculating a diameter-reducing theoretical diameter value of a post-treatment catalytic unit corresponding to the catalyst carrier, the gasket and the cylinder body, further giving a diameter-reducing compensation diameter value, and compensating and calibrating the diameter-reducing theoretical diameter value, so that the influences caused by manufacturing errors of the diameter-reducing equipment, measuring errors of the retesting equipment and deviation generated by elastic deformation of the post-treatment catalytic unit in the manufacturing process of the post-treatment catalytic unit are eliminated, a diameter-reducing target diameter value of the post-treatment catalytic unit is obtained, and the catalyst carrier, the gasket and the cylinder body are subjected to diameter-reducing treatment according to the diameter-reducing target diameter value, so that the post-treatment catalytic unit with higher diameter-reducing precision can be obtained.
(2) Before the diameter of the catalyst carrier, the gasket and the cylinder body is reduced by using diameter reducing equipment, measuring the catalyst carrier, the gasket and the cylinder body by using retesting equipment, and calculating to obtain a diameter reducing theoretical diameter value of the post-treatment catalytic unit; and after the diameter reduction is finished, measuring the obtained post-treatment catalytic unit by using retesting equipment, and calculating to obtain a retested actual diameter value of the post-treatment catalytic unit.
For the first piece of post-treatment catalytic unit, the diameter-reducing compensation diameter value is a given value, and the sum of the diameter-reducing theoretical diameter value of the post-treatment catalytic unit and the given value is the diameter-reducing target diameter value of the post-treatment catalytic unit.
For post-treatment catalytic units manufactured subsequently, diameter shrinkage compensation diameter values are dynamically calculated instead of given values, when the diameter shrinkage compensation diameter value of the nth post-treatment catalytic unit is calculated, the nth post-treatment catalytic unit is retested, the retested actual diameter value of the nth post-treatment catalytic unit is calculated, and then the retested actual diameter value of the nth post-treatment catalytic unit is subtracted from the diameter shrinkage target diameter value of the nth post-treatment catalytic unit to obtain an n-1 deviation value; then summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an updated accumulated error, namely the nth accumulated error; and finally, carrying out quotient on the nth accumulated error and n-1 to obtain the diameter reducing compensation value of the nth post-treatment catalytic unit. And adding the diameter-reducing theoretical diameter value of the nth post-treatment catalytic unit to the diameter-reducing compensation diameter value to obtain the diameter-reducing target diameter value of the nth post-treatment catalytic unit.
By adopting the method, because the accumulated errors formed by each post-treatment catalytic unit manufactured previously are considered when the diameter-reducing compensation diameter values of the current post-treatment catalytic units are calculated, the calculated diameter-reducing compensation diameter value of the current post-treatment catalytic unit tends to an ideal state, and the finally calculated diameter-reducing target diameter value of the current post-treatment catalytic unit also tends to an ideal state, the influence caused by the manufacturing error of diameter-reducing equipment, the measuring error of retesting equipment and the deviation generated by the elastic deformation of the post-treatment catalytic unit when each post-treatment catalytic unit is manufactured can be further eliminated by adopting a dynamic adjustment method, the diameter-reducing precision of the post-treatment catalytic units is further improved, and the product yield is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flowchart of a diameter reduction precision improving method for a post-treatment catalytic unit according to an embodiment of the present disclosure;
FIG. 2 is a block diagram of a diameter reduction system for an aftertreatment catalytic unit according to an embodiment of the disclosure;
fig. 3 is a block diagram of a master control device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, an embodiment of the present application provides a method for improving diameter reduction precision of an aftertreatment catalytic unit, where the aftertreatment catalytic unit includes a catalyst carrier, a gasket, and a cylinder, and the method includes the following steps:
101: acquiring a diameter reducing compensation diameter value;
102: measuring the catalyst carrier, the gasket and the cylinder, and calculating the diameter reduction theoretical diameter value of the post-treatment catalytic unit;
103: summing the diameter-reducing theoretical diameter value and the diameter-reducing compensation diameter value of the post-treatment catalytic unit to obtain a diameter-reducing target diameter value of the post-treatment catalytic unit;
104: and (4) reducing the diameter of the catalyst carrier, the gasket and the cylinder according to the diameter reduction target diameter value of the post-treatment catalytic unit to obtain the post-treatment catalytic unit.
According to the diameter-reducing precision improving method for the post-treatment catalytic unit, the catalyst carrier, the gasket and the cylinder are measured through the re-measurement equipment, the diameter-reducing theoretical diameter value of the post-treatment catalytic unit corresponding to the catalyst carrier, the gasket and the cylinder is calculated, a diameter-reducing compensation diameter value is given, the diameter-reducing theoretical diameter value is compensated and calibrated, the influences caused by the manufacturing error of the diameter-reducing equipment, the measuring error of the re-measurement equipment and the deviation generated by elastic deformation of the post-treatment catalytic unit in the manufacturing process of the post-treatment catalytic unit are eliminated, the diameter-reducing target diameter value of the post-treatment catalytic unit is obtained, the diameter-reducing processing is conducted on the catalyst carrier, the gasket and the cylinder according to the diameter-reducing target diameter value, the post-treatment catalytic unit with higher diameter-reducing precision can be obtained, and therefore the diameter-reducing precision of the post-treatment catalytic unit can be improved, and the product qualification rate is improved.
When different post-treatment catalytic units are manufactured, the influence caused by the manufacturing error of the diameter reducing equipment, the measuring error of the retesting equipment and the deviation generated by the elastic deformation of the post-treatment catalytic unit is different in size. In order to be able to adaptively eliminate the influence of errors for each aftertreatment catalytic unit, in some preferred embodiments, the present application uses a dynamic tuning method for tuning.
Dynamically adjusting to meet the quality requirement of each aftertreatment catalytic unit, and specifically operating as follows:
(1) When the post-treatment catalytic unit is the nth piece and n =1, the diameter reduction compensation diameter value is given as a fixed value, that is, when the first piece of post-treatment catalytic unit is manufactured, the diameter reduction compensation diameter value is given based on a manufacturing error of the diameter reduction device, a measurement error of the retesting device, and a deviation caused by elastic deformation of the post-treatment catalytic unit, and is given by a device commissioning measurement experience, that is, the diameter reduction compensation diameter value of the first piece of post-treatment catalytic unit is an empirical value, which may be obtained from a device manufacturer during commissioning of the device or may be obtained from past manufacturing experience of the post-treatment catalytic unit manufacturer.
For example, the range of the diameter-reduction compensation diameter value of the first aftertreatment catalytic unit may be set to 0.4mm to 0.8mm, and the value of the diameter-reduction compensation diameter value of the first aftertreatment catalytic unit may be set to 0.6mm.
(2) When the post-treatment catalytic unit is the nth part and n is more than or equal to 2, the step of obtaining the diameter shrinkage compensation diameter value of the nth part of post-treatment catalytic unit comprises the following steps:
retesting the n-1 th post-treatment catalytic unit, and calculating a retested actual diameter value of the n-1 th post-treatment catalytic unit;
subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value;
summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error;
and (4) carrying out quotient on the nth accumulated error and n-1 to obtain the diameter reduction compensation value of the nth post-treatment catalytic unit.
The principle of the embodiment is as follows:
before the diameter of the catalyst carrier, the gasket and the cylinder body is reduced by using diameter reducing equipment, measuring the catalyst carrier, the gasket and the cylinder body by using retesting equipment, and calculating to obtain a diameter reducing theoretical diameter value of the post-treatment catalytic unit; and after the diameter reduction is finished, measuring the obtained post-treatment catalytic unit by using retesting equipment, and calculating to obtain a retested actual diameter value of the post-treatment catalytic unit.
For the first piece of post-treatment catalytic unit, the diameter-reducing compensation diameter value is a given value, and the sum of the diameter-reducing theoretical diameter value of the post-treatment catalytic unit and the given value is the diameter-reducing target diameter value of the post-treatment catalytic unit.
For post-treatment catalytic units manufactured subsequently, diameter shrinkage compensation diameter values are dynamically calculated instead of given values, when the diameter shrinkage compensation diameter value of the nth post-treatment catalytic unit is calculated, the nth post-treatment catalytic unit is retested, the retested actual diameter value of the nth post-treatment catalytic unit is calculated, and then the retested actual diameter value of the nth post-treatment catalytic unit is subtracted from the diameter shrinkage target diameter value of the nth post-treatment catalytic unit to obtain an n-1 deviation value; then summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an updated accumulated error, namely the nth accumulated error; and finally, carrying out quotient on the nth accumulated error and n-1 to obtain the diameter reducing compensation value of the nth post-treatment catalytic unit. And adding the diameter-reducing theoretical diameter value of the nth post-treatment catalytic unit to the diameter-reducing compensation diameter value to obtain the diameter-reducing target diameter value of the nth post-treatment catalytic unit.
By adopting the method, because the accumulated errors formed by each post-treatment catalytic unit manufactured previously are considered when the diameter-reducing compensation diameter values of the current post-treatment catalytic units are calculated, the calculated diameter-reducing compensation diameter value of the current post-treatment catalytic unit tends to an ideal state, and the finally calculated diameter-reducing target diameter value of the current post-treatment catalytic unit also tends to an ideal state, the influence caused by the manufacturing error of diameter-reducing equipment, the measuring error of retesting equipment and the deviation generated by the elastic deformation of the post-treatment catalytic unit when each post-treatment catalytic unit is manufactured can be further eliminated by adopting a dynamic adjustment method, the diameter-reducing precision of the post-treatment catalytic units is further improved, and the product yield is improved.
When n =2, the first cumulative error is set to 0.
Referring to fig. 2, an embodiment of the present application further provides a diameter reducing system for an aftertreatment catalytic unit, where the aftertreatment catalytic unit includes a catalyst carrier, a gasket, and a cylinder, and includes a control device, a retesting device, and a diameter reducing device, where:
the control equipment is used for acquiring a reducing compensation diameter value;
the retesting equipment is used for measuring the catalyst carrier, the gasket and the cylinder body before reducing the diameter; and the number of the first and second groups,
the control equipment is also used for calculating data obtained by measuring the catalyst carrier, the gasket and the cylinder body before diameter reduction of the retesting equipment to obtain a diameter-reduced theoretical diameter value of the post-treatment catalytic unit, and summing the diameter-reduced theoretical diameter value and the diameter-reduced compensation diameter value of the post-treatment catalytic unit to obtain a diameter-reduced target diameter value of the post-treatment catalytic unit;
and the diameter reducing device is used for carrying out diameter reducing treatment on the catalyst carrier, the gasket and the cylinder body according to the diameter reducing target diameter value of the post-treatment catalytic unit to obtain the post-treatment catalytic unit.
The diameter-reducing system provided by the embodiment of the application measures the catalyst carrier, the gasket and the cylinder through the retesting device, sends measurement data to the control device, the control device calculates the diameter-reducing theoretical diameter values of the post-treatment catalytic units corresponding to the catalyst carrier, the gasket and the cylinder according to the measurement data, then gives a diameter-reducing compensation diameter value, and performs compensation calibration on the diameter-reducing theoretical diameter value, so as to eliminate the manufacturing error of the diameter-reducing device in the manufacturing process of the post-treatment catalytic units, the measurement error of the retesting device and the influence caused by the deviation generated by the elastic deformation of the post-treatment catalytic units, thereby obtaining the diameter-reducing target diameter value of the post-treatment catalytic units, and according to the diameter-reducing target diameter value, the diameter-reducing device is controlled to perform diameter-reducing treatment on the catalyst carrier, the gasket and the cylinder, so that the post-treatment catalytic units with higher diameter-reducing precision can be obtained.
In some preferred embodiments, in order to adaptively eliminate the influence of errors on each post-treatment catalytic unit, the retesting device is further configured to retest the obtained post-treatment catalytic unit after the diameter reduction is completed;
the control device has a reduced diameter compensation diameter value of the first aftertreatment catalytic unit in advance, and the control device is further configured to:
recording the ordinal number n of the post-treatment catalytic unit corresponding to the catalyst carrier, the gasket and the cylinder measured by the retesting equipment;
reading the recorded ordinal number n;
when n =1, calling a pre-stored diameter shrinkage compensation diameter value of the first post-treatment catalytic unit, and summing the diameter shrinkage compensation diameter value with a diameter shrinkage theoretical diameter value of the post-treatment catalytic unit to obtain a diameter shrinkage target diameter value of the post-treatment catalytic unit;
when n is larger than or equal to 2, calling retest equipment to retest data of the (n-1) th post-treatment catalytic unit obtained after the diameter reduction is finished, and calculating to obtain a retest actual diameter value of the (n-1) th post-treatment catalytic unit; subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value; summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error; carrying out quotient on the nth accumulated error and n-1 to obtain a diameter reducing compensation diameter value of the nth post-treatment catalytic unit; and summing the diameter-reducing compensation diameter value of the n-th post-treatment catalytic unit and the diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain the diameter-reducing target diameter value of the n-th post-treatment catalytic unit.
When n =1, the value range of the diameter reducing compensation diameter value is 0.4 mm-0.8 mm.
When n =2, the first cumulative error is set to 0.
Referring to fig. 3, an embodiment of the present application further provides a main control device of a diameter reducing system of a post-treatment catalytic unit, where the main control device runs on a control device, the main control device includes a storage module, a counting module, and a calculation module, where:
the storage module is prestored with the diameter reducing compensation diameter value of the first post-treatment catalytic unit;
the counting module is used for recording the ordinal number n of the post-treatment catalytic unit corresponding to the catalyst carrier, the gasket and the cylinder which are measured by the retesting equipment;
the calculation module is used for:
calculating data obtained by measuring the catalyst carrier, the gasket and the cylinder body before diameter reduction by retesting equipment to obtain a diameter reduction theoretical diameter value of the post-treatment catalytic unit;
reading the ordinal number n recorded by the counting module;
when n =1, calling a diameter-reducing compensation diameter value of the first post-treatment catalytic unit prestored in the storage module, and summing the diameter-reducing compensation diameter value and a diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain a diameter-reducing target diameter value of the post-treatment catalytic unit;
when n is larger than or equal to 2, calling retest equipment to retest data of the (n-1) th post-treatment catalytic unit obtained after the diameter reduction is finished, and calculating to obtain a retest actual diameter value of the (n-1) th post-treatment catalytic unit; subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value; summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error; carrying out quotient on the nth accumulated error and n-1 to obtain a diameter reducing compensation diameter value of the nth post-treatment catalytic unit; and summing the diameter-reducing compensation diameter value of the nth post-treatment catalytic unit and the diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain the diameter-reducing target diameter value of the nth post-treatment catalytic unit.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A diameter reduction precision improving method for an after-treatment catalytic unit comprises a catalyst carrier, a gasket and a cylinder body, and is characterized by comprising the following steps:
acquiring a diameter reducing compensation diameter value;
measuring the catalyst carrier, the gasket and the cylinder, and calculating the diameter-reduced theoretical diameter value of the post-treatment catalytic unit;
summing the diameter-reducing theoretical diameter value of the post-treatment catalytic unit and the diameter-reducing compensation diameter value to obtain a diameter-reducing target diameter value of the post-treatment catalytic unit;
reducing the diameter of the catalyst carrier, the gasket and the cylinder according to the diameter reduction target diameter value of the post-treatment catalytic unit to obtain a post-treatment catalytic unit;
when the post-treatment catalytic unit is the nth piece and n =1, the diameter reducing compensation diameter value is given by equipment debugging and measuring experience based on manufacturing errors of a diameter reducing device, measuring errors of a retesting device and deviation generated by elastic deformation of the post-treatment catalytic unit;
when the aftertreatment catalytic unit is the nth part and n is more than or equal to 2, the step of acquiring the diameter reducing compensation value comprises the following steps:
retesting the n-1 th post-treatment catalytic unit, and calculating a retested actual diameter value of the n-1 th post-treatment catalytic unit;
subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value;
summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error;
and (4) carrying out quotient on the nth accumulated error and n-1 to obtain the diameter reducing compensation value of the nth post-treatment catalytic unit.
2. The method for improving the diameter reduction precision of the aftertreatment catalytic unit according to claim 1, wherein the method comprises the following steps:
when the post-treatment catalytic unit is the nth part and n =1, the reducing compensation diameter value ranges from 0.4mm to 0.8mm.
3. The method for improving the diameter reduction precision of the aftertreatment catalytic unit according to claim 2, wherein:
when the aftertreatment catalytic unit is the nth part and n =1, the value of the diameter reducing compensation diameter value is 0.6mm.
4. The method for improving the diameter reduction precision of the aftertreatment catalytic unit according to claim 1, wherein the method comprises the following steps:
when n =2, the first cumulative error is set to 0.
5. A diameter reduction system for an aftertreatment catalytic unit comprising a catalyst carrier, a liner, and a cartridge, comprising:
a control device for obtaining a reduced diameter compensated diameter value;
retesting equipment for measuring the catalyst support, the gasket, and the cylinder prior to diameter reduction; and the number of the first and second groups,
the control equipment is also used for calculating data obtained by measuring the catalyst carrier, the gasket and the cylinder body before diameter reduction of the retesting equipment to obtain a diameter-reduced theoretical diameter value of the post-treatment catalytic unit, and summing the diameter-reduced theoretical diameter value of the post-treatment catalytic unit and the diameter-reduced compensation diameter value to obtain a diameter-reduced target diameter value of the post-treatment catalytic unit;
the diameter reducing device is used for reducing the diameter of the catalyst carrier, the gasket and the cylinder according to the diameter reducing target value of the post-treatment catalytic unit to obtain the post-treatment catalytic unit;
the retest equipment is also used for retesting the obtained post-treatment catalytic unit after the diameter reduction is finished;
the control device has a pre-stored diameter reduction compensation diameter value for the first aftertreatment catalytic unit, the control device further configured to:
recording the ordinal number n of the post-treatment catalytic unit corresponding to the catalyst carrier, the gasket and the cylinder measured by the retesting equipment;
reading the recorded ordinal number n;
when n =1, calling a pre-stored diameter-reducing compensation diameter value of the first post-treatment catalytic unit, and summing the diameter-reducing compensation diameter value with a diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain a diameter-reducing target diameter value of the post-treatment catalytic unit, wherein the diameter-reducing compensation diameter value is given by equipment debugging and measuring experience based on manufacturing errors of diameter-reducing equipment, measuring errors of retesting equipment and deviation generated by elastic deformation of the post-treatment catalytic unit;
when n is more than or equal to 2, calling retesting equipment to retest data of the (n-1) th post-treatment catalytic unit obtained after reducing, and calculating to obtain a retest actual diameter value of the (n-1) th post-treatment catalytic unit; subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value; summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error; quotient is carried out on the nth accumulated error and the n-1 to obtain the diameter reducing compensation value of the nth post-processing catalytic unit; and summing the diameter-reducing compensation diameter value of the nth post-treatment catalytic unit and the diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain the diameter-reducing target diameter value of the nth post-treatment catalytic unit.
6. A diameter reduction system for an aftertreatment catalytic unit in accordance with claim 5 wherein:
when n =1, the value range of the reducing compensation diameter value is 0.4 mm-0.8 mm;
when n =2, the first cumulative error is set to 0.
7. A device for the master control of a diameter reduction system of a post-treatment catalytic unit according to claim 5 or 6, operating on said control means, characterized in that it comprises:
the storage module is prestored with the diameter reducing compensation diameter value of the first post-treatment catalytic unit;
the counting module is used for recording the ordinal number n of the post-treatment catalytic unit corresponding to the catalyst carrier, the gasket and the cylinder which are measured by the retesting equipment;
a computing module to:
calculating data obtained by measuring the catalyst carrier, the gasket and the cylinder body before diameter reduction by the re-measuring equipment to obtain a diameter reduction theoretical diameter value of the post-treatment catalytic unit;
-reading the ordinal number n recorded by said counting module;
when n =1, calling a diameter-reducing compensation diameter value of the first piece of post-treatment catalytic unit prestored in the storage module, and summing the diameter-reducing compensation diameter value and a diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain a diameter-reducing target diameter value of the post-treatment catalytic unit;
when n is larger than or equal to 2, calling retest equipment to retest data of the (n-1) th post-treatment catalytic unit obtained after the diameter reduction is finished, and calculating to obtain a retest actual diameter value of the (n-1) th post-treatment catalytic unit; subtracting the re-measured actual diameter value of the (n-1) th post-treatment catalytic unit from the diameter-shrinkage target diameter value of the (n-1) th post-treatment catalytic unit to obtain an (n-1) th deviation value; summing the (n-1) th deviation value and the (n-1) th accumulated error to obtain an nth accumulated error; quotient is carried out on the nth accumulated error and the n-1 to obtain the diameter reducing compensation value of the nth post-processing catalytic unit; and summing the diameter-reducing compensation diameter value of the nth post-treatment catalytic unit and the diameter-reducing theoretical diameter value of the post-treatment catalytic unit to obtain the diameter-reducing target diameter value of the nth post-treatment catalytic unit.
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| CA2256153A1 (en) * | 1998-12-15 | 2000-06-15 | Vince Harold | Tube end-forming method and apparatus |
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