CN106547982B - Compressor unit basic load calculation method and device - Google Patents
Compressor unit basic load calculation method and device Download PDFInfo
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Abstract
The invention relates to the field of compressor manufacturing, and discloses a method and a device for calculating the basic load of a compressor unit, wherein the basic load of all equipment and bases on the compressor unit is calculated, wherein the basic load comprises a static load, a dynamic load, a static equivalent load and an earthquake load; according to the calculated foundation load, carrying out distribution calculation on the foundation load so as to obtain a foundation load numerical value on each foundation bolt; and (4) taking absolute values of distribution results of the basic load numerical values on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction, and then carrying out algebraic sum calculation. The invention improves the calculation efficiency of the basic load in the product design process and shortens the product design period to a certain extent.
Description
Technical Field
The invention relates to the field of compressor manufacturing, in particular to a method and a device for calculating a basic load of a compressor unit.
Background
The calculation of the base load of the centrifugal compressor assembly is the data that must be provided during the design of the centrifugal compressor, this data being used to carry out the design of the infrastructure, this data generally including static loads, dynamic loads, seismic loads, etc. In the prior art, basic load calculation is required in the product design process every time, the basic load calculation repeatability is high, the efficiency is low, and the labor cost is high.
Disclosure of Invention
The invention provides a compressor unit basic load calculation method and device, and solves the technical problems that basic load calculation is needed in each product design process in the prior art, the basic load calculation repeatability is high, the efficiency is low, and the labor cost is high.
The purpose of the invention is realized by the following technical scheme:
a compressor unit base load calculation method comprises the following steps:
calculating the basic loads of all equipment and bases on the compressor unit, wherein the basic loads comprise static loads, dynamic loads, static equivalent loads and seismic loads;
according to the calculated foundation load, carrying out distribution calculation on the foundation load so as to obtain a foundation load numerical value on each foundation bolt;
and (4) taking absolute values of distribution results of the basic load numerical values on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction, and then carrying out algebraic sum calculation.
A compressor assembly baseload calculating device comprising:
the load calculation module is used for calculating basic loads of all equipment and bases on the compressor unit, wherein the basic loads comprise static loads, dynamic loads, static equivalent loads and seismic loads;
the distribution calculation module is used for performing distribution calculation on the foundation load according to the calculated foundation load so as to obtain a foundation load numerical value on each foundation bolt;
and the summarizing and calculating module is used for taking absolute values of distribution results of the basic load numerical values on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction and then carrying out algebraic sum calculation.
The invention provides a method and a device for calculating the basic load of a compressor unit, which are characterized in that the basic load of all equipment and bases on the compressor unit is calculated, wherein the basic load comprises a static load, a dynamic load, a static equivalent load and an earthquake load; according to the calculated foundation load, carrying out distribution calculation on the foundation load so as to obtain a foundation load numerical value on each foundation bolt; and (4) taking absolute values of distribution results of the basic load numerical values on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction, and then carrying out algebraic sum calculation. The invention improves the calculation efficiency of the basic load in the product design process and shortens the product design period to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a flowchart of a basic load calculation method of a compressor unit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a basic load calculation device of a compressor unit according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, a flowchart of a method for calculating a base load of a compressor unit is shown, which includes:
102, according to the calculated foundation load, carrying out distribution calculation on the foundation load to obtain a foundation load numerical value on each foundation bolt;
and 103, taking absolute values of distribution results of the basic load numerical values on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction, and then carrying out algebraic sum calculation.
Wherein, step 101 may specifically include:
step 101-1, multiplying the weight of all equipment and bases on the compressor unit by a mass amplification factor α to obtain the input of a static load;
step 101-2, calculating vertical dynamic loads P of all equipment on the compressor unityiHorizontal transverse dynamic load PziAnd horizontal longitudinal dynamic load PxiWherein, in the step (A),
wherein, Pzi＝Pyi，Pxi＝0.5Pyi，WgIs the dead weight of the rotor, NmcsIs the maximum continuous rotational speed;
101-3, calculating vertical static equivalent loads F of all equipment on the compressor unityiHorizontal transverse static equivalent load FziAnd horizontal longitudinal static equivalent load FxiWherein F isyi＝5Wg，
Step 101-4, calculating vertical seismic loads S of all equipment on compressor unityiHorizontal transverse seismic load SziAnd horizontal longitudinal seismic loads SxiWherein S isyi＝ayiW，Szi＝aziW，Sxi＝axiW，ayiIn order to be the vertical seismic load coefficient,
aziis a horizontal transverse seismic load coefficient, axiFor horizontal longitudinal seismic load factor, axi＝aziAnd W is the self weight of the equipment.
102-1, calculating a first vertical support reaction force under the action of a vertical external force, wherein a vertical support reaction force matrix Fy＝L-1P1，P1Is a vertical external force matrix, and L is a coefficient matrix;
102-2, calculating a second vertical support reaction force and a first longitudinal support reaction force under the action of the longitudinal external force, wherein the first longitudinal support reaction force Fx1＝Fx2＝…＝FxnP/n, n is the total number of bolts, and the second vertical support reaction force F is L-1P2，P2Is a longitudinal outward force matrix, and L is a coefficient matrix;
102-3, calculating a first transverse direction under the action of a transverse external forceA support reaction force and a third vertical support reaction force, wherein the first transverse support reaction force FZ＝L-1P3，P3Is a transverse external force matrix, L is a coefficient matrix, a third vertical support force, Fy1＝Fy2＝…＝Fyn＝P/n。
103-1, performing algebraic sum calculation on the transverse static load, the longitudinal static load and the vertical static load on each foundation bolt after taking absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction;
103-2, performing algebraic sum calculation on the transverse dynamic load, the longitudinal dynamic load and the vertical dynamic load on each foundation bolt after taking absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction;
103-3, performing algebraic sum calculation on the transverse static equivalent load, the longitudinal static equivalent load and the vertical static equivalent load on each foundation bolt after taking absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction;
and 103-4, performing algebraic sum calculation on the transverse seismic load, the longitudinal seismic load and the vertical seismic load on each foundation bolt after the absolute values of the distribution results in the transverse direction, the longitudinal direction and the vertical direction are obtained.
The invention provides a compressor unit basic load calculation method, which is characterized in that basic loads of all equipment and bases on a compressor unit are calculated, wherein the basic loads comprise static loads, dynamic loads, static equivalent loads and seismic loads; according to the calculated foundation load, carrying out distribution calculation on the foundation load so as to obtain a foundation load numerical value on each foundation bolt; and (4) taking absolute values of distribution results of the basic load numerical values on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction, and then carrying out algebraic sum calculation. The invention is based on the rigid hypothesis, and integrally encapsulates the basic load calculation and distribution method, thereby realizing the automation of the calculation process. The calculation efficiency of the basic load in the product design process is improved, and the product design period is shortened to a certain extent.
As shown in fig. 2, a schematic structural diagram of a basic load calculating device of a compressor unit is shown, which includes:
the load calculation module 210 is configured to calculate basic loads of all devices and bases on the compressor unit, where the basic loads include a static load, a dynamic load, a static equivalent load, and a seismic load;
the distribution calculation module 220 is configured to perform distribution calculation on the foundation load according to the calculated foundation load, so as to obtain a foundation load value on each foundation bolt;
and the summary calculation module 230 is configured to perform algebraic sum calculation after taking absolute values of distribution results of the basic load numerical values on each anchor bolt in the transverse direction, the longitudinal direction and the vertical direction.
Wherein the load calculating module 210 includes:
the static load calculation unit 211 is configured to multiply the weight of all the devices and the base on the compressor unit by a mass amplification factor α to obtain an input of the static load;
a dynamic load calculating unit 212 for calculating the vertical dynamic loads P of all the devices on the compressor unityiHorizontal transverse dynamic load PziAnd horizontal longitudinal dynamic load PxiWherein, in the step (A),
wherein, Pzi＝Pyi，Pxi＝0.5Pyi，WgIs the dead weight of the rotor, NmcsIs the maximum continuous rotational speed;
a static equivalent load calculation unit 213 for calculating the vertical static equivalent loads F of all the devices on the compressor unityiHorizontal transverse static equivalent load FziAnd horizontal longitudinal static equivalent load FxiWherein F isyi＝5Wg，
Seismic load calculation unit 214 for calculating the vertical seismic loads of all equipment on the compressor rackSyi, horizontal transverse seismic loads Szi and horizontal longitudinal seismic loads Sxi, wherein Syi is ayiW, Szi is aziW, Sxi is axiW, ayi is a vertical seismic load coefficient,
aziis a horizontal transverse seismic load coefficient, axiFor horizontal longitudinal seismic load factor, axi＝aziAnd W is the self weight of the equipment.
The allocation calculation module 220 includes:
a vertical external force distribution unit 221 for calculating a first vertical support force under the action of the vertical external force, wherein the vertical support force matrix Fy＝L-1P1，P1Is a vertical external force matrix, and L is a coefficient matrix;
a longitudinal external force distribution unit 222 for calculating a second vertical support force and a first longitudinal support force under the action of the longitudinal external force, wherein the first longitudinal support force Fx1＝Fx2＝…＝FxnP/n, n is the total number of bolts, and the second vertical support reaction force F is L-1P2，P2Is a longitudinal outward force matrix, and L is a coefficient matrix;
a lateral external force distribution means 223 for calculating a first lateral reaction force and a third vertical reaction force under the action of the lateral external force, wherein the first lateral reaction force FZ is L-1P3，P3Is a transverse external force matrix, L is a coefficient matrix, a third vertical support force, Fy1＝Fy2＝…＝Fyn＝P/n。
The summary calculating module 230 includes:
the first summary calculation unit 231 is used for performing algebraic sum calculation on the transverse static load, the longitudinal static load and the vertical static load of each foundation bolt after taking absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction;
the second summary calculation unit 232 is configured to perform algebraic sum calculation after taking absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction for the transverse dynamic load, the longitudinal dynamic load and the vertical dynamic load on each anchor bolt;
the third summary calculation unit 233 is configured to perform algebraic sum calculation after taking absolute values of distribution results in the transverse direction, the longitudinal direction, and the vertical direction from the transverse static equivalent load, the longitudinal static equivalent load, and the vertical static equivalent load on each anchor bolt;
and the fourth summary calculation unit 234 is configured to perform algebraic sum calculation after taking absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction for the transverse seismic load, the longitudinal seismic load and the vertical seismic load on each anchor bolt.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary hardware platform, and certainly may be implemented by hardware, but in many cases, the former is a better embodiment. With this understanding in mind, all or part of the technical solutions of the present invention that contribute to the background can be embodied in the form of a software product, which can be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments or some parts of the embodiments of the present invention.
The present invention has been described in detail, and the principle and embodiments of the present invention are explained herein by using specific examples, which are only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (6)
1. A compressor unit base load calculation method is characterized by comprising the following steps:
calculating the basic load of all equipment and bases on the compressor unit, wherein the basic load comprises static load, dynamic load and static equivalentThe method comprises the steps of multiplying the weight of all equipment and bases on the compressor unit by a mass amplification factor α to obtain the input of a static load, and calculating the vertical dynamic load P of all the equipment on the compressor unityiHorizontal transverse dynamic load PziAnd horizontal longitudinal dynamic load PxiWherein, in the step (A),
wherein, Pzi＝Pyi，Pxi＝0.5Pyi，WgIs the dead weight of the rotor, NmcsIs the maximum continuous rotational speed; calculating vertical static equivalent load F of all equipment on compressor unityiHorizontal transverse static equivalent load FziAnd horizontal longitudinal static equivalent load FxiWherein F isyi＝5Wg，
Calculating the vertical seismic load S of all equipment on the compressor unityiHorizontal transverse seismic load SziAnd horizontal longitudinal seismic loads SxiWherein S isyi＝ayiW，Szi＝aziW，Sxi＝axiW，ayiIn order to be the vertical seismic load coefficient,
aziis a horizontal transverse seismic load coefficient, axiFor horizontal longitudinal seismic load factor, axi＝aziW is the equipment dead weight;
according to the calculated foundation load, carrying out distribution calculation on the foundation load so as to obtain a foundation load numerical value on each foundation bolt; the step of performing distribution calculation on the base load according to the calculated base load includes:
calculating the second under the action of vertical external forceA vertical thrust force matrix Fy＝L-1P1，P1Is a vertical external force matrix, and L is a coefficient matrix;
calculating a second vertical support reaction force and a first longitudinal support reaction force under the action of the longitudinal external force, wherein the first longitudinal support reaction force Fx1＝Fx2＝…＝FxnP/n, n is the total number of bolts, and the second vertical support reaction force F is L-1P2，P2Is a longitudinal outward force matrix, and L is a coefficient matrix;
calculating a first transverse supporting reaction force and a third vertical supporting reaction force under the action of the transverse external force, wherein the first transverse supporting reaction force Fz＝L-1P3，P3Is a transverse external force matrix, L is a coefficient matrix, and a third vertical support reaction force Fy1＝Fy2＝…＝Fyn＝P’/n；
And (4) taking absolute values of distribution results of the basic load numerical values on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction, and then carrying out algebraic sum calculation.
2. The method for calculating the base load of the compressor unit according to claim 1, wherein the step of calculating the base load of all the devices and bases on the compressor unit comprises:
multiplying the weight of all equipment and bases on the compressor unit by a mass amplification factor α to obtain the input of the static load;
calculating the vertical dynamic load P of all equipment on the compressor unityiHorizontal transverse dynamic load PziAnd horizontal longitudinal dynamic load PxiWherein, in the step (A),
wherein, Pzi＝Pyi，Pxi＝0.5Pyi，WgIs the dead weight of the rotor, NmcsIs the maximum continuous rotational speed;
calculating vertical static equivalent load F of all equipment on compressor unityiHorizontal transverse static equivalent load FziAnd levelLongitudinal static equivalent load FxiWherein F isyi＝5Wg，
Calculating the vertical seismic load S of all equipment on the compressor unityiHorizontal transverse seismic load SziAnd horizontal longitudinal seismic loads SxiWherein S isyi＝ayiW，Szi＝aziW，Sxi＝axiW，ayiIn order to be the vertical seismic load coefficient,
aziis a horizontal transverse seismic load coefficient, axiFor horizontal longitudinal seismic load factor, axi＝aziAnd W is the self weight of the equipment.
3. The method for calculating the foundation load of the compressor unit according to claim 1, wherein the step of performing algebraic sum calculation after taking absolute values of the distribution results of the foundation load values on each anchor bolt in the transverse direction, the longitudinal direction and the vertical direction comprises the steps of:
taking absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction of the transverse static load, the longitudinal static load and the vertical static load on each foundation bolt, and then carrying out algebraic sum calculation;
performing algebraic sum calculation on the distribution results of the transverse dynamic load, the longitudinal dynamic load and the vertical dynamic load on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction after taking absolute values;
performing algebraic sum calculation on distribution results in the transverse direction, the longitudinal direction and the vertical direction of the transverse static equivalent load, the longitudinal static equivalent load and the vertical static equivalent load on each foundation bolt after taking absolute values;
and performing algebraic sum calculation after absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction are obtained for the transverse seismic load, the longitudinal seismic load and the vertical seismic load on each foundation bolt.
4. A compressor assembly baseload calculating apparatus, comprising:
the load calculation module is used for calculating basic loads of all equipment and bases on the compressor unit, wherein the basic loads comprise static loads, dynamic loads, static equivalent loads and seismic loads, specifically comprises the steps of multiplying the weights of all the equipment and the bases on the compressor unit by a mass amplification factor α to obtain the input of the static loads, and calculating the vertical dynamic loads P of all the equipment on the compressor unityiHorizontal transverse dynamic load PziAnd horizontal longitudinal dynamic load PxiWherein, in the step (A),
wherein, Pzi＝Pyi，Pxi＝0.5Pyi，WgIs the dead weight of the rotor, NmcsIs the maximum continuous rotational speed; calculating vertical static equivalent load F of all equipment on compressor unityiHorizontal transverse static equivalent load FziAnd horizontal longitudinal static equivalent load FxiWherein F isyi＝5Wg，
Calculating the vertical seismic load S of all equipment on the compressor unityiHorizontal transverse seismic load SziAnd horizontal longitudinal seismic loads SxiWherein S isyi＝ayiW，Szi＝aziW，Sxi＝axiW，ayiIn order to be the vertical seismic load coefficient,
aziis a horizontal transverse seismic load coefficient, axiFor horizontal longitudinal seismic load factor, axi＝aziW is the equipment dead weight;
the distribution calculation module is used for performing distribution calculation on the foundation load according to the calculated foundation load so as to obtain a foundation load numerical value on each foundation bolt; the allocation calculation module includes:
a vertical external force distribution unit for calculating a first vertical support force under the action of a vertical external force, wherein a vertical support force matrix Fy＝L-1P1，P1Is a vertical external force matrix, and L is a coefficient matrix;
a longitudinal external force distribution unit for calculating a second vertical support force and a first longitudinal support force under the action of the longitudinal external force, wherein the first longitudinal support force Fx1＝Fx2＝…＝FxnP/n, n is the total number of bolts, and the second vertical support reaction force F is L-1P2，P2Is a longitudinal outward force matrix, and L is a coefficient matrix;
a transverse external force distribution unit for calculating a first transverse reaction force and a third vertical reaction force under the action of the transverse external force, wherein the first transverse reaction force Fz is L-1P3，P3Is a transverse external force matrix, L is a coefficient matrix, a third vertical support force, Fy1＝Fy2＝…＝Fyn＝P’/n；
And the summarizing and calculating module is used for taking absolute values of distribution results of the basic load numerical values on each foundation bolt in the transverse direction, the longitudinal direction and the vertical direction and then carrying out algebraic sum calculation.
5. The compressor rack base load calculation device of claim 4, wherein the load calculation module comprises:
the static load calculation unit is used for multiplying the weight of all equipment and bases on the compressor unit by a mass amplification factor α to obtain the input of the static load;
a dynamic load calculating unit for calculating vertical dynamic loads P of all devices on the compressor unityiHorizontal transverse dynamic load PziAnd horizontal longitudinal dynamic load PxiWherein, in the step (A),
wherein, Pzi＝Pyi，Pxi＝0.5Pyi，WgIs the dead weight of the rotor, NmcsIs the maximum continuous rotational speed;
the static equivalent load calculation unit is used for calculating the vertical static equivalent loads F of all equipment on the compressor unityiHorizontal transverse static equivalent load FziAnd horizontal longitudinal static equivalent load FxiWherein F isyi＝5Wg，
The earthquake load calculation unit is used for calculating vertical earthquake loads Syi, horizontal transverse earthquake loads Szi and horizontal longitudinal earthquake loads Sxi of all equipment on the compressor unit, wherein Syi is ayiW, Szi is aziW, Sxi is axiW, ayi is a vertical earthquake load coefficient,
aziis a horizontal transverse seismic load coefficient, axiFor horizontal longitudinal seismic load factor, axi＝aziAnd W is the self weight of the equipment.
6. The compressor rack base load calculation device of claim 4, wherein the summary calculation module comprises:
the first collecting and calculating unit is used for performing algebraic sum calculation on the transverse static load, the longitudinal static load and the vertical static load on each foundation bolt after the absolute values of the distribution results in the transverse direction, the longitudinal direction and the vertical direction are obtained;
the second collecting and calculating unit is used for performing algebraic sum calculation on the transverse dynamic load, the longitudinal dynamic load and the vertical dynamic load on each foundation bolt after the absolute values of the distribution results in the transverse direction, the longitudinal direction and the vertical direction are obtained;
the third collecting and calculating unit is used for performing algebraic sum calculation on the transverse static equivalent load, the longitudinal static equivalent load and the vertical static equivalent load on each foundation bolt after taking absolute values of distribution results in the transverse direction, the longitudinal direction and the vertical direction;
and the fourth collecting and calculating unit is used for performing algebraic sum calculation on the transverse seismic load, the longitudinal seismic load and the vertical seismic load on each foundation bolt after the absolute values of the distribution results in the transverse direction, the longitudinal direction and the vertical direction are obtained.
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