Constant-force spring hanger type selection method and system based on actual load

Abstract

The invention discloses a constant-force spring hanger type selection method and system based on an actual load. The method comprises the following steps: obtaining an originally designed working load; calculating the weights of a pipe clamp and a middle connecting piece of the constant-force spring hanger according to a hanger installation drawing; judging whether a damper, a horizontal limiting pull support rod and a vertical guide device exist between the constant-force spring hanger and the adjacent bearing hanger or not; calculating to obtain the weight of the pipe clamps of the damper, the horizontal limiting pulling and supporting rod and the vertical guiding device; calculating to obtain the actual load of the constant-force spring hanger; and according to the actual load and the designed thermal displacement of the constant-force spring hanger, selecting the model of the constant-force spring hanger according to the standard, and determining the specification parameters of the constant-force spring hanger. The system comprises a query module, a calculation module, a judgment module and a model selection module. According to the method, the model selection of the constant-force spring hanger is realized through the calculation of the actual load.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline structural dynamics analysis, and particularly relates to a method and system for selecting a constant force spring hanger based on actual loads. Background Art

[0002] As an important component of the power industry, pipelines are an integral part of the national energy industry. Pipe supports and hangers are an important part of pipeline accessories. The functions of pipe supports and hangers for pipelines include three aspects. One is to bear the weight of the pipeline and other auxiliary components; the second is to control the thermal displacement of the pipeline; the third is to control the vibration of the pipeline. The constant force spring hanger belongs to one type of pipe support and hanger, and its function is to bear the weight of the pipeline. The bearing capacity at the suspension point remains constant during the vertical thermal displacement of the pipeline, and it is generally set at places with large thermal displacement of the pipeline. Through on-site inspection of the hot and cold states of pipe supports and hangers for high-temperature and high-pressure steam pipelines in thermal power units, it is found that due to insufficient bearing capacity of the constant force spring hangers in some power plants, the vertical upward thermal displacement of the pipeline is seriously insufficient, resulting in serious insufficient expansion of the pipeline, increased secondary stress of the pipeline, and seriously affecting the service life and operation safety of the pipeline. The main reasons for the insufficient bearing capacity of the constant force spring hanger include two aspects. One is poor constant force, and the main reason for the poor constant force is that the manufacturing quality and processing accuracy are lower than the standard requirements; the other is that the load selection during the selection of the constant force spring hanger does not match the actual pipeline load. Therefore, the actual load of the pipeline needs to be considered when selecting a constant force spring hanger. Summary of the Invention

[0003] The purpose of the present invention is to provide a method and system for selecting a constant force spring hanger based on actual loads, and select a constant force spring hanger through the calculation of actual loads.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: The present invention provides a method for selecting a constant force spring hanger based on actual loads, including: Step 1, query the original design parameters of the constant force spring hanger to obtain the working load of the original design; Step 2, calculate the weights of the pipe clamp and the intermediate connecting piece of the constant force spring hanger according to the installation drawing of the hanger; Step 3, determine whether there are dampers, horizontal limit stay rods, and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hangers; Step 4, calculate the pipe clamp weights of the damper, horizontal limit stay rod, and vertical guiding device according to the result of Step 3; Step 5, calculate the actual load of the constant force spring hanger based on the working load of the original design, the weights of the pipe clamp and the intermediate connecting piece of the constant force spring hanger, and the pipe clamp weights of the damper, horizontal limit stay rod, and vertical guiding device; Step 6: According to the actual load and design thermal displacement of the constant force spring hanger obtained in Step 5, select the constant force spring hanger according to the standard to determine the specification parameters of the constant force spring hanger.

[0005] A further improvement of the present invention is to query the original design parameters of the constant force spring hanger to obtain the working load P1 of the original design, including: The design parameters of the constant force spring hanger include pipeline thermal displacement, cold displacement, installation load, and working load. For the constant force spring hanger, the installation load is the same as the working load; the parameters of the constant force spring hanger in the high-temperature and high-pressure steam pipelines of power station boilers are all obtained by the electric power design institute through stress calculation of the pipeline using the finite element method.

[0006] A further improvement of the present invention is to calculate the weight P2 of the pipe clamp and intermediate connecting piece of the constant force spring hanger according to the hanger installation drawing, including: The constant force spring hanger bears the design working load and also bears the weight of the components in the middle part between the pipeline and the hanger, that is, the weight of the pipe clamp and intermediate connecting piece.

[0007] A further improvement of the present invention is to determine whether there are dampers, horizontal limit stay rods, and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hangers, including: The weight of the pipe clamps of the dampers, horizontal limit stay rods, and vertical guiding devices is distributed to the adjacent load-bearing hangers as part of the pipeline weight.

[0008] A further improvement of the present invention is to calculate the weight P3 of the pipe clamps of the dampers, horizontal limit stay rods, and vertical guiding devices according to the result of Step 3, including two cases: One is that there are no dampers, horizontal limit stay rods, and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hangers, and P3 = 0; The other is that there are dampers, horizontal limit stay rods, and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hangers. Obtain the pipe clamp specifications and weights according to the installation drawings of the supports and hangers of the dampers, horizontal limit stay rods, and vertical guiding devices, and calculate the weights of the pipe clamps of the dampers, horizontal limit stay rods, and vertical guiding devices.

[0009] A further improvement of the present invention is to calculate the actual load of the constant force spring hanger based on the working load of the original design, the weight of the pipe clamp and intermediate connecting piece of the constant force spring hanger, and the weight of the pipe clamps of the dampers, horizontal limit stay rods, and vertical guiding devices, as follows: P = P1 + P2 + P3 Where: P is the actual load of the constant force spring hanger; P1 is the working load of the original design; P2 is the weight of the pipe clamp and intermediate connecting parts of the constant force spring hanger; P3 is the weight of the pipe clamp of the damper, horizontal limit stay rod and vertical guiding device.

[0010] The present invention also provides a constant force spring hanger selection system based on the actual load, including: A query module that queries the original design parameters of the constant force spring hanger to obtain the working load of the original design; A first calculation module that calculates the weight of the pipe clamp and intermediate connecting parts of the constant force spring hanger according to the hanger installation drawing; A judgment module that judges whether there are dampers, horizontal limit stay rods and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hangers; A second calculation module that calculates the weight of the pipe clamp of the damper, horizontal limit stay rod and vertical guiding device according to the result of the judgment module; A third calculation module that calculates the actual load of the constant force spring hanger based on the working load of the original design, the weight of the pipe clamp and intermediate connecting parts of the constant force spring hanger, and the weight of the pipe clamp of the damper, horizontal limit stay rod and vertical guiding device; A selection module that selects the constant force spring hanger according to the actual load and design thermal displacement of the constant force spring hanger obtained by the first calculation module, and determines the specification parameters of the constant force spring hanger according to the standard.

[0011] A further improvement of the present invention lies in that in the query module, when querying the original design parameters of the constant force spring hanger to obtain the working load P1 of the original design, it includes: The design parameters of the constant force spring hanger include pipeline thermal displacement, cold displacement, installation load and working load. For the constant force spring hanger, the installation load is the same as the working load; the parameters of the constant force spring hanger in the high-temperature and high-pressure steam pipeline of the power station boiler are all obtained by the electric power design institute through stress calculation of the pipeline by the finite element method.

[0012] A further improvement of the present invention lies in that in the first calculation module, when calculating the weight P2 of the pipe clamp and intermediate connecting parts of the constant force spring hanger according to the hanger installation drawing, it includes: The constant force spring hanger bears the design working load and also bears the weight of the components in the middle part of the pipeline and the hanger, that is, the weight of the pipe clamp and intermediate connecting parts.

[0013] A further improvement of the present invention lies in that the judgment module judges whether there are dampers, horizontal limit stay rods and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hangers, including: The weight of the pipe clamp of the damper, the horizontal limit stay bar and the vertical guiding device is distributed to the adjacent load-bearing hangers as part of the pipe weight.

[0014] Compared with the prior art, the present invention has at least the following beneficial technical effects: The method and system for selecting a constant force spring hanger based on actual load provided by the present invention can obtain the pipe weight more accurately. Compared with the working load in the design parameters of the constant force spring hanger, the constant force spring hanger selected based on the actual load by this method can better match the pipe weight. On the premise of ensuring the manufacturing quality and processing accuracy of the constant force spring hanger, the constant force spring hanger selected based on the actual load can ensure that the pipe has sufficient thermal vertical upward displacement, effectively reduce the secondary stress of the pipe, and ensure the safe operation of the pipe. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0016] Figure 1 It is a flowchart of a method for selecting a constant force spring hanger based on actual load according to the present invention.

[0017] Figure 2 It is a structural block diagram of a system for selecting a constant force spring hanger based on actual load according to the present invention. Detailed Embodiments

[0018] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0019] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0020] It should also be understood that the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0021] It should be further understood that the term "and / or" used in the specification and appended claims of the present invention refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0022] Schematic diagrams of various structures according to the disclosed embodiments of the present invention are shown in the drawings. These figures are not drawn to scale, where for the purpose of clear expression, certain details are enlarged and certain details may be omitted. The shapes of various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art can additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0023] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0024] Embodiment 1 A method for selecting a constant force spring hanger based on actual load provided by the present invention includes: Step 1: Query the original design parameters of the constant force spring hanger to obtain the working load of the original design; Step 2: Calculate the weights of the pipe clamp and the intermediate connecting piece of the constant force spring hanger according to the installation drawing of the hanger; Step 3: Determine whether there are dampers, horizontal limit stay rods, and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hangers; Step 4: Calculate the pipe clamp weights of the damper, horizontal limit stay rod, and vertical guiding device according to the result of Step 3; Step 5: Calculate the actual load of the constant force spring hanger based on the working load of the original design, the weights of the pipe clamp and the intermediate connecting piece of the constant force spring hanger, and the pipe clamp weights of the damper, horizontal limit stay rod, and vertical guiding device; Step 6: Select the constant force spring hanger according to the standard based on the actual load and design thermal displacement of the constant force spring hanger obtained in Step 5 to determine the specification parameters of the constant force spring hanger.

[0025] Embodiment 2 Reference Figure 1 , a method for selecting a constant force spring hanger based on actual load provided by the present invention includes the following steps: Step 1: Query the original design parameters of the constant force spring hanger to obtain the working load P1 of the original design. The design parameters of the constant force spring hanger include the thermal displacement, cold displacement, installation load, and working load of the pipeline. For the constant force spring hanger, the installation load is the same as the working load. The parameters of the constant force spring hangers in the high-temperature and high-pressure steam pipelines of power station boilers, especially the four major pipelines (main steam pipeline, high-temperature reheater steam pipeline, low-temperature reheater steam pipeline, high-pressure feedwater pipeline, high-pressure bypass pipeline, low-pressure bypass pipeline), are obtained by the electric power design institute through stress calculation of the pipeline using the finite element method. Some design institutes only consider the self-weight of the pipeline, steam weight, insulation weight, and the weight of accessories such as valves when matching the loads of the constant force spring hanger, but do not consider the weight of the hanger assembly pipe clamp and intermediate connector.

[0026] Step 2: Calculate the weight P2 of the pipe clamp and intermediate connector of the constant force spring hanger according to the hanger installation drawing. The constant force spring hangers configured on the important high-temperature and high-pressure steam pipelines of thermal power units are basically equipped with hanger installation drawings, which detail the specifications, materials, quantities, and weights of each component of the hanger. In fact, the constant force spring hanger not only bears the designed working load but also the weight of the intermediate components between the pipeline and the hanger, that is, the weight of the pipe clamp and intermediate connector.

[0027] Step 3: Determine whether there are dampers, horizontal limit stay rods, and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hanger. The damper has little damping effect on the slow thermal expansion and contraction of the pipeline, and the damper does not bear the weight of the pipeline. The functions of the horizontal limit stay rod and vertical guiding device are to limit the thermal displacement of the pipeline and also do not bear the weight of the pipeline. The weight of the pipe clamps of the damper, horizontal limit stay rod, and vertical guiding device is distributed to the adjacent load-bearing hangers as part of the pipeline weight, but this part of the weight is not considered when selecting the load of the constant force spring hanger.

[0028] Step 4: Calculate the weight P3 of the pipe clamps of the damper, horizontal limit stay rod, and vertical guiding device according to the result of Step 3. There are two situations in Step 4. One is that there are no dampers, horizontal limit stay rods, and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hanger, and P3 = 0. The other is that there are dampers, horizontal limit stay rods, and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hanger. Obtain the pipe clamp specifications and weights according to the support and hanger installation drawings of the damper, horizontal limit stay rod, and vertical guiding device, and calculate the weight of the pipe clamps of the damper, horizontal limit stay rod, and vertical guiding device.

[0029] Step 5: Calculate the actual load of the constant force spring hanger P = P1 + P2 + P3 Where: P is the actual load of the constant force spring hanger; P1 is the working load of the original design; P2 is the weight of the pipe clamp and intermediate connecting parts of the constant force spring hanger; P3 is the weight of the pipe clamp of the damper, horizontal limit stay bar, and vertical guiding device.

[0030] P1 is obtained through Step 1, P2 is obtained through Step 2, and P3 is obtained through Step 4.

[0031] Step 6: According to the actual load and design thermal displacement of the constant force spring hanger obtained in Step 5, select the constant force spring hanger according to the corresponding standard to determine its specification parameters.

[0032] Example 3 A horizontal pipe section of a steam pipeline in a thermal power plant is equipped with a group of constant force spring hangers. For the convenience of description, it is set that the direction from the fixed end to the expansion end is the positive direction of the X direction, the direction from the front of the furnace to the back of the furnace is the positive direction of the X direction, and the vertically upward direction is the positive direction of the Z direction. The horizontal pipe section is in the X direction. On the -X side of the constant force spring hanger, 4 groups of hydraulically damped devices installed in the Z direction are configured to control the pipeline vibration, and on the +X side, a set of horizontal limit stay bars are configured to limit the horizontal thermal displacement of the pipeline. By querying the original design data, the design parameters at the hanger point of the constant force spring hanger are: the designed working load P1 = 45379 N, and the design thermal displacement Δ = (-21 mm, 112 mm, 82 mm); the mass of the pipe clamp and intermediate connecting parts P2 = 1587 N can be obtained through the installation drawing of the constant force spring hanger; there are 4 groups of hydraulically damped devices on the -X side of the constant force spring hanger, and the weight of the pipe clamp of a single damper is 870 N, which can be obtained through the installation drawing of the damper, so the total weight of 4 dampers is 3480 N. On the +X side, a set of horizontal limit stay bars are configured, and the weight of the pipe clamp is 870 N, which can be obtained through the installation drawing of the limit stay bar. Therefore, the total weight of the pipe clamps of the damper and horizontal limit stay bar P3 = 3350 N. Through the method of the present invention, the actual load of the constant force spring hanger P = P1 + P2 + P3 = 51316 N can be calculated, which is 5937 N larger than the designed working load. Finally, according to the actual load P and design displacement of the constant force spring hanger, the specification parameters of the constant force spring hanger are determined with reference to relevant industry standards. The constant force spring hanger selected by this method can ensure that the pipeline is subjected to a more accurate tensile force. On the premise of ensuring the manufacturing quality and processing accuracy of the constant force spring hanger, it can ensure that the pipeline has sufficient vertical upward thermal displacement, effectively reduce the secondary stress of the pipeline, and ensure the safe operation of the pipeline.

[0033] Example 4 Reference Figure 2 , a constant force spring hanger selection system based on actual load provided by the present invention includes: A query module, which queries the original design parameters of the constant force spring hanger to obtain the working load of the original design; The first calculation module calculates the weights of the pipe clamp and the intermediate connecting piece of the constant force spring hanger according to the hanger installation drawing; The judgment module judges whether there are dampers, horizontal limit stay rods and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hanger; The second calculation module calculates the weights of the pipe clamps of the damper, the horizontal limit stay rod and the vertical guiding device according to the result of the judgment module; The third calculation module calculates the actual load of the constant force spring hanger based on the working load of the original design, the weights of the pipe clamp and the intermediate connecting piece of the constant force spring hanger, and the weights of the pipe clamps of the damper, the horizontal limit stay rod and the vertical guiding device; The selection module selects the constant force spring hanger according to the actual load and design thermal displacement of the constant force spring hanger obtained by the first calculation module, and determines the specification parameters of the constant force spring hanger according to the standard.

[0034] In this embodiment, in the query module, the original design parameters of the constant force spring hanger are queried to obtain the working load P1 of the original design, including: The design parameters of the constant force spring hanger include pipeline thermal displacement, cold displacement, installation load and working load. For the constant force spring hanger, the installation load is the same as the working load; the parameters of the constant force spring hanger in the high-temperature and high-pressure steam pipeline of the power station boiler are all obtained by the electric power design institute through stress calculation of the pipeline using the finite element method.

[0035] In this embodiment, in the first calculation module, the weights P2 of the pipe clamp and the intermediate connecting piece of the constant force spring hanger are calculated according to the hanger installation drawing, including: The constant force spring hanger bears the design working load and the weight of the intermediate components between the pipeline and the hanger, that is, the weights of the pipe clamp and the intermediate connecting piece.

[0036] In this embodiment, the judgment module judges whether there are dampers, horizontal limit stay rods and vertical guiding devices between the constant force spring hanger and its adjacent load-bearing hanger, including: The weights of the pipe clamps of the damper, the horizontal limit stay rod and the vertical guiding device are distributed to the adjacent load-bearing hangers as part of the pipeline weight.

[0037] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0038] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. A person skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art. The above content is only to illustrate the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A method for selecting a constant force spring hanger based on actual load, characterized in that: include: Step 1, query the original design parameters of the constant force spring hanger to obtain the original designed working load; Step 2: Calculate the weight of the pipe clamp and the intermediate connector of the constant force spring hanger according to the hanger installation drawing; Step 3, determine whether there is a damper, a horizontal limit brace rod and a vertical guide device between the constant force spring hanger and its adjacent load-bearing hanger; Step 4: Calculate the weight of the damper, the horizontal limit brace and the pipe clamp of the vertical guide device according to the result of step 3; Step 5: Based on the original designed working load, the weight of the pipe clamp and the intermediate connector of the constant force spring hanger, and the weight of the pipe clamp of the damper, the horizontal limit brace rod, and the vertical guide device, the actual load of the constant force spring hanger is calculated; Step 6: Based on the actual load and design thermal displacement of the constant force spring hanger obtained in step 5, select the constant force spring hanger according to the standard and determine the specification parameters of the constant force spring hanger.

2. A method for selecting a constant force spring hanger based on actual load according to claim 1, characterized in that: Query the original design parameters of the constant force spring hanger and obtain the original design working load P1, including: The design parameters of constant force spring hangers include pipeline thermal displacement, cold displacement, installation load and working load. For constant force spring hangers, the installation load is the same as the working load. The parameters of constant force spring hangers in high-temperature and high-pressure steam pipelines of power station boilers are obtained by the Electric Power Design Institute using the finite element method to calculate the stress of the pipeline.

3. The method for selecting a constant force spring hanger based on actual load according to claim 1, characterized in that: Calculate the weight P2 of the pipe clamp and intermediate connector of the constant force spring hanger according to the hanger installation drawing, including: The constant force spring hanger bears the designed working load and the weight of the intermediate components between the pipe and the hanger, that is, the weight of the pipe clamp and the intermediate connector.

4. The method for selecting a constant force spring hanger based on actual load according to claim 1, characterized in that: Determine whether there are dampers, horizontal limit bracing rods and vertical guide devices between the constant force spring hanger and its adjacent load-bearing hanger, including: The weight of the dampers, horizontal limit stays and pipe clamps of the vertical guides is distributed to the adjacent load-bearing hangers as part of the pipe weight.

5. The method for selecting a constant force spring hanger based on actual load according to claim 1, characterized in that: According to the result of step 3, calculate the weight P3 of the pipe clamp of the damper, horizontal limit brace and vertical guide device, including two cases: First, there is no damper, horizontal limit brace rod, or vertical guide device between the constant force spring hanger and its adjacent load-bearing hanger, and P3=0; Second, there are dampers, horizontal limit bracing rods and vertical guide devices between the constant force spring hanger and its adjacent load-bearing hanger. The specifications and weights of the pipe clamps are obtained based on the support and hanger installation drawings of the dampers, horizontal limit bracing rods and vertical guide devices, and the weights of the pipe clamps of the dampers, horizontal limit bracing rods and vertical guide devices are calculated.

6. The method for selecting a constant force spring hanger based on actual load according to claim 1, characterized in that: Based on the original design working load, the weight of the pipe clamps and intermediate connectors of the constant force spring hanger, and the weight of the pipe clamps of the damper, horizontal limit brace rod, and vertical guide device, the actual load of the constant force spring hanger is calculated as follows: P=P1+P2+P3 Where: P is the actual load of the constant force spring hanger; P1 is the original designed working load; P2 is the weight of the pipe clamp and the intermediate connector of the constant force spring hanger; P3 is the weight of the pipe clamp of the damper, horizontal limit brace rod, and vertical guide device.

7. A constant force spring hanger selection system based on actual load, characterized in that: include: A query module is used to query the original design parameters of the constant force spring hanger and obtain the original designed working load; The first calculation module calculates the weight of the pipe clamp and the intermediate connecting piece of the constant force spring hanger according to the hanger installation drawing; A judgment module is used to judge whether there is a damper, a horizontal limit bracing rod and a vertical guide device between the constant force spring hanger and its adjacent load-bearing hanger; The second calculation module calculates the weight of the pipe clamp of the damper, the horizontal limit brace rod and the vertical guide device according to the result of the judgment module; The third calculation module calculates the actual load of the constant force spring hanger based on the original designed working load, the weight of the pipe clamp and the intermediate connector of the constant force spring hanger, and the weight of the pipe clamp of the damper, the horizontal limit brace rod, and the vertical guide device; The selection module selects the constant force spring hanger according to the actual load and design thermal displacement of the constant force spring hanger obtained by the first calculation module, selects the constant force spring hanger according to the standard, and determines the specification parameters of the constant force spring hanger.

8. The constant force spring hanger selection system based on actual load according to claim 7, characterized in that: In the query module, query the original design parameters of the constant force spring hanger to obtain the original design working load P1, including: The design parameters of constant force spring hangers include pipeline thermal displacement, cold displacement, installation load and working load. For constant force spring hangers, the installation load is the same as the working load. The parameters of constant force spring hangers in high-temperature and high-pressure steam pipelines of power station boilers are obtained by the Electric Power Design Institute using the finite element method to calculate the stress of the pipeline.

9. A constant force spring hanger selection system based on actual load according to claim 8, characterized in that: In the first calculation module, the weight P2 of the pipe clamp and the intermediate connector of the constant force spring hanger is calculated according to the hanger installation drawing, including: The constant force spring hanger bears the designed working load and the weight of the intermediate components between the pipe and the hanger, that is, the weight of the pipe clamp and the intermediate connector.

10. A constant force spring hanger selection system based on actual load according to claim 9, characterized in that: A judgment module is used to judge whether there is a damper, a horizontal limit brace and a vertical guide device between the constant force spring hanger and its adjacent load-bearing hanger, including: The weight of the dampers, horizontal limit stays and pipe clamps of the vertical guides is distributed to the adjacent load-bearing hangers as part of the pipe weight.

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