Method for arranging pipeline and support

Abstract

The invention provides a pipeline and support arranging method, the maximum allowable span of a pipeline (1) is Lmax, when an accessory (2) is arranged on the pipeline (1), if the weight MA of the accessory (2) is smaller than or equal to two times of the weight MB of the pipeline (1) with the length being the maximum allowable span, the maximum allowable span La of the pipeline (1) provided with the accessory (2) is La = K.Lmax, and K is larger than or equal to 0.7 and smaller than or equal to 0.9. Through the scheme, calculation parameters such as material characteristics, temperature changes and various loads do not need to be considered, calculation of the span of the pipeline is simplified, and the installation efficiency of the pipeline is improved under the condition that the anti-loading capacity and reliability of the pipeline under the action of static loads and dynamic loads are guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of supports and hangers, and in particular to a method for installing a pipeline and a support. Background Art

[0002] The installation of supports and hangers for thermal pipes is extremely critical to ensure the safe and stable operation of the pipeline system. On the one hand, the temperature changes during the operation of thermal pipes cause them to expand and contract. The supports and hangers provide reasonable constraints and guidance, allowing the pipes to expand and contract within a certain range, preventing deformation and rupture caused by excessive accumulation of thermal stress, and ensuring the integrity of the pipe structure; and the medium in the pipe is high temperature and high pressure, and the supports and hangers bear a variety of loads, firmly supporting the pipes, avoiding accidents such as leakage caused by pressure overload, and ensuring the safety of personnel and equipment. On the other hand, the supports and hangers can reduce the vibration of the pipes caused by factors such as medium flow, reduce the risk of pipe damage and noise, improve operational stability and reliability, ensure the normal supply of heat, and at the same time bear weight and limit displacement to prevent excessive deformation and stress concentration, protect the pipes, extend their life, and ensure the efficiency and safety of the heating system.

[0003] At present, computer programs are generally used to perform stress analysis on the support and hanger settings of thermal pipes, so as to obtain the best setting position. There are many disadvantages in using computer stress calculations for traditional thermal pipes. Stress calculations are highly complex. The construction of the calculation model needs to consider the precise geometric shape of the pipe, various connecting components and support forms, which requires a large number of input parameters. In addition, the process of describing the direction of the pipe and setting the characteristics of the components is cumbersome and error-prone. At the same time, it is necessary to take into account a variety of calculation parameters such as material properties, temperature changes, and various loads. The parameters are closely related, and it is difficult to determine their accurate values. A small deviation may cause the result to be inaccurate. Summary of the invention

[0004] A technical problem to be solved by the present disclosure is: how to simplify the setting method of pipelines and brackets.

[0005] To solve the above technical problems, an embodiment of the present disclosure provides a method for setting up a pipeline and a bracket, wherein the maximum allowable span of the pipeline is Lmax. When accessories are provided on the pipeline, if the weight MA of the accessories is less than or equal to twice the weight MB of the pipeline with a length of the maximum allowable span, then the maximum allowable span La of the pipeline provided with the accessories is: La=K·Lmax, 0.7≤K≤0.9.

[0006] In some embodiments, if the weight MA of the accessory is less than or equal to 2 times the weight MB of the pipe with a length of the maximum allowable span and greater than 0.5 times the weight MB of the pipe with a length of the maximum allowable span, a bracket is arranged near one side of the accessory, and the distance between the bracket and the accessory is less than the nominal diameter DN of the pipe.

[0007] In some embodiments, the bracket is a first guide bracket.

[0008] In some embodiments, when accessories are provided on the pipeline, if the weight MA of the accessories is greater than twice the weight MB of the pipeline having a length of the maximum allowable span, brackets are respectively provided near both sides of the accessories, and the distance between the brackets and the accessories is less than the nominal diameter DN of the pipeline.

[0009] In some embodiments, the two brackets are respectively a first fixed bracket and a second guide bracket.

[0010] In some embodiments, when the next span unit adjacent to the second guide bracket is a straight pipe, the next span unit is supported by a third guide bracket.

[0011] In some embodiments, when the next span unit adjacent to the second guide bracket is a curved pipe, the next span unit is supported by a second fixed bracket.

[0012] In some embodiments, the next span unit includes a first straight pipe section adjacent to the second fixed bracket and a second straight pipe section adjacent to the second guide bracket, and a length ratio of the first straight pipe section to the second straight pipe section is: l1 / l2≤1.5.

[0013] In some embodiments, the accessory is a valve including a joystick. If the eccentric mass of the valve satisfies: h·MA>5.7I / D0, a support frame is added to the joystick, wherein h is the distance from the central axis of the pipeline to the center of gravity of the valve, MA is the valve weight, D0 is the outer diameter of the pipeline, and I is the moment of inertia of the pipeline.

[0014] In some embodiments, the accessories are valves, flanges, and measuring instruments.

[0015] Through the above technical solution, there is no need to consider calculation parameters such as material properties, temperature changes, and various loads, which simplifies the calculation of pipeline span, ensures the load-bearing capacity and reliability of the pipeline under static and dynamic loads, and improves the installation efficiency of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1It is a structural schematic diagram of a pipeline and a bracket disclosed in an embodiment of the present disclosure;

[0018] Figure 2 It is a schematic diagram of the structure of the pipeline and the bracket disclosed in the embodiment of the present disclosure;

[0019] Figure 3 It is a schematic diagram of the structure of the pipeline and the bracket disclosed in the embodiment of the present disclosure;

[0020] Figure 4 It is a schematic diagram of the structure of the pipeline and the bracket disclosed in the embodiment of the present disclosure;

[0021] Figure 5 It is a schematic diagram of the structure of the pipeline and the bracket disclosed in the embodiment of the present disclosure.

[0022] Description of reference numerals:

[0023] 1-pipeline, 2-accessory, 3-first guide bracket, 4-first fixed bracket, 5-second guide bracket, 6-third guide bracket, 7-second fixed bracket, 8-first section of straight pipe, 9-second section of straight pipe. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0025] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0026] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0027] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0028] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0029] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0031] The present solution provides a method for setting up a pipeline and a bracket, wherein the maximum allowable span of the pipeline 1 is Lmax. When an accessory 2 is provided on the pipeline 1, if the weight MA of the accessory 2 is less than or equal to twice the weight MB of the pipeline 1 having a length of the maximum allowable span, then the maximum allowable span La of the pipeline 1 provided with the accessory 2 is: La=K·Lmax, 0.7≤K≤0.9.

[0032] Among them, the span refers to the length of the pipeline between two supports (or other supports), the maximum allowable span Lmax is the maximum allowable length of the pipeline 1 between the two supports, and the maximum allowable span La is the maximum allowable length when the accessory 2 is installed on the pipeline 1.

[0033] When other accessories 2 are installed on the pipeline 1, the overall weight of the pipeline 1 increases because the weight of the accessories 2 is greater at the same length. Therefore, the span of the pipeline 1 needs to be adjusted accordingly.

[0034] Among them, reference Figure 1 As shown, when the weight MA of the accessory 2 is less than or equal to twice the weight MB of the pipeline 1 with the maximum allowable span, the maximum allowable span of the pipeline 1 installed with the accessory 2 is La=K·Lmax, where 0<MA≤2MB, 0.7≤K≤0.9.

[0035] Wherein, the pipeline 1 can be a thermal pipeline.

[0036] There are two methods to determine the maximum allowable span: calculation method and table lookup method. The more commonly used method is the table lookup method, see the table below.

[0037] Recommended maximum allowable span of pipeline

[0038]

[0039]

[0040] In this solution, there is no need to consider calculation parameters such as material properties, temperature changes, and multiple loads, which simplifies the calculation of pipeline span, ensures the load-bearing capacity and reliability of the pipeline under static and dynamic loads, and improves the installation efficiency of the pipeline.

[0041] In addition, in some embodiments, if the weight MA of the accessory 2 is less than or equal to 2 times the weight MB of the pipe 1 with a length of the maximum allowable span and greater than 0.5 times the weight MB of the pipe 1 with a length of the maximum allowable span, a bracket is provided near one side of the accessory 2, and the distance between the bracket and the accessory 2 is less than the nominal diameter DN of the pipe 1. Figure 2 As shown, if the weight MA of accessory 2 is greater than 0.5 times the weight MB of the maximum allowable span of pipeline 1, that is, the weight of accessory 2 is relatively large, it is necessary to set a bracket at a closer distance to accessory 2 to support accessory 2 and pipeline 1, wherein the distance between the bracket used and accessory 2 is less than the nominal diameter DN of pipeline 1.

[0042] In some embodiments, the support is a first guide support 3. Figure 2 As shown, the bracket close to the accessory 2 is a guide bracket, namely, a first guide bracket 3 . The pipeline 1 is supported by the first guide bracket 3 and can move axially relative to the first guide bracket 3 to allow telescopic deformation of the pipeline 1 and the accessory 2 .

[0043] In addition, in some embodiments, when the accessory 2 is provided on the pipeline 1, if the weight MA of the accessory 2 is greater than 2 times the weight MB of the pipeline 1 having a maximum allowable span, brackets are respectively provided near both sides of the accessory 2, and the distance between the brackets and the accessory 2 is less than the nominal diameter DN of the pipeline 1. That is, when the weight of the accessory 2 exceeds 2 times the weight MB of the pipeline 1 having a maximum allowable span, the weight of the accessory 2 is relatively large, and therefore brackets are respectively provided on both sides thereof to support it, and the distance between the two brackets and the accessory 2 is less than the nominal diameter DN of the pipeline 1.

[0044] Further, in some embodiments, the two brackets are respectively a first fixed bracket 4 and a second guide bracket 5. Figure 3 As shown, the two brackets are a fixed bracket and a guide bracket, wherein the pipe 1 is relatively fixed to the first fixed bracket 4, and the pipe 1 cannot move axially relative to the first fixed bracket 4. The pipe 1 is supported on the second guide bracket 5 and can move axially relative to the second guide bracket 5. There is a certain degree of expansion and contraction deformation between the pipe 1 and the accessory 2. One of the brackets is relatively fixed to the pipe 1, and the accessory 2 can be limited within a certain range to provide stable support for the accessory 2 and the pipe 1. The other bracket can allow the expansion and contraction deformation of the accessory 2 and the pipe 1, such as Figure 3 shown.

[0045] In addition, in some embodiments, when the next span unit adjacent to the second guide bracket 5 is a straight pipe, the next span unit is supported by the third guide bracket 6. The next span unit refers to another section of the pipe located between the two brackets and adjacent to a section of the pipe between the two brackets. For example, the next span unit adjacent to the second guide bracket 5 is the pipe 1 between the second guide bracket 5 and the third guide bracket 6. Since this section of the pipe 1 is a straight pipe, a guide bracket can be used to support it to allow the pipe 1 to be stretched and deformed, such as Figure 4 shown.

[0046] On the other hand, in some other embodiments, when the next span unit adjacent to the second guide bracket 5 is a curved pipe, the next span unit is supported by the second fixed bracket 7. The next span unit as a curved pipe is supported by the second guide bracket 5 and the second fixed bracket 7. Since the extension direction of the pipeline 1 changes, that is, it is formed into a curved pipe, it needs to be supported by a fixed bracket to limit its relative movement in all directions and ensure the stability of the pipeline 1.

[0047] Specifically, in some embodiments, the next span unit includes a first straight pipe section 8 adjacent to the second fixed support 7 and a second straight pipe section 9 adjacent to the second guide support 5, and the length ratio of the first straight pipe section 8 to the second straight pipe section 9 is: l1 / l2≤1.5. Figure 4 As shown, the distance between the turning point of the curved pipe and the attachment 2 (and the second guide bracket 5) is basically determined. Due to the existence of the turn, the position of the second fixed bracket 7 needs to be designed accordingly, that is, the ratio of the distance between the second fixed bracket 7 and the turning point (the length of the first section of the straight pipe 8) and the distance between the second guide bracket 5 and the turning point (the length of the second section of the straight pipe 9) is less than or equal to 1.5, l1 / l2≤1.5, that is, the distance between the second fixed bracket 7 and the turning point should not be too large.

[0048] Wherein, in some embodiments, reference Figure 5 , the accessory 2 is a valve including an operating lever. If the eccentric mass of the valve satisfies: h·MA>5.7I / D0, a support frame is added to the operating lever, wherein h is the distance from the central axis of the pipeline 1 to the center of gravity of the valve, MA is the weight of the valve, D0 is the outer diameter of the pipeline 1, and I is the moment of inertia of the pipeline 1. When the eccentric moment of the valve is large, an additional support frame can be added. Among them, when the operating lever is extended vertically, the support force provided by the support frame is perpendicular to the plane defined by the extension direction of the operating lever and the extension direction of the pipeline 1, and when the operating lever is extended horizontally, the support force provided by the support frame is perpendicular to the plane defined by the extension direction of the operating lever and the extension direction of the pipeline 1, or the support frame provides horizontal support force.

[0049] In some embodiments, the accessory 2 is a valve, a flange, or a measuring instrument.

[0050] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0051] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A method for setting a pipeline and a bracket, characterized in that: The maximum permissible span of the pipeline (1) is Lmax. When an accessory (2) is provided on the pipeline (1), if the weight MA of the accessory (2) is less than or equal to twice the weight MB of the pipeline (1) having a length equal to the maximum permissible span, the maximum permissible span La of the pipeline (1) provided with the accessory (2) is: La=K·Lmax, 0.7≤K≤0.

9.

2. The method for installing a pipeline and a bracket according to claim 1, characterized in that: If the weight MA of the accessory (2) is less than or equal to twice the weight MB of the pipeline (1) with a length equal to the maximum allowable span and is greater than 0.5 times the weight MB of the pipeline (1) with a length equal to the maximum allowable span, a bracket is provided near one side of the accessory (2), and the distance between the bracket and the accessory (2) is less than the nominal diameter DN of the pipeline (1).

3. The method for installing a pipeline and a bracket according to claim 2, characterized in that: The bracket is a first guide bracket (3).

4. The method for installing a pipeline and a bracket according to claim 1, characterized in that: When an accessory (2) is provided on the pipeline (1), if the weight MA of the accessory (2) is greater than twice the weight MB of the pipeline (1) having a length equal to the maximum allowable span, brackets are respectively provided near both sides of the accessory (2), and the distance between the brackets and the accessory (2) is less than the nominal diameter DN of the pipeline (1).

5. The method for installing a pipeline and a bracket according to claim 4, characterized in that: The two brackets are respectively a first fixed bracket (4) and a second guide bracket (5).

6. The method for installing a pipeline and a bracket according to claim 5, characterized in that: When the next span unit adjacent to the second guide bracket (5) is a straight pipe, the next span unit is supported by the third guide bracket (6).

7. The method for installing a pipeline and a bracket according to claim 5, characterized in that: When the next span unit adjacent to the second guide bracket (5) is a curved pipe, the next span unit is supported by the second fixed bracket (7).

8. The method for installing a pipeline and a bracket according to claim 7, characterized in that: The next span unit comprises a first section of straight pipe (8) adjacent to the second fixed bracket (7) and a second section of straight pipe (9) adjacent to the second guide bracket (5), and a length ratio of the first section of straight pipe (8) to the second section of straight pipe (9) is: l1 / l2≤1.

5.

9. The method for installing a pipeline and a bracket according to claim 1, characterized in that: The accessory (2) is a valve including an operating lever. If the eccentric mass of the valve satisfies: h·MA>5.7I / D0, a support frame is added to the operating lever, wherein h is the distance from the central axis of the pipeline (1) to the center of gravity of the valve, MA is the weight of the valve, D0 is the outer diameter of the pipeline (1), and I is the moment of inertia of the pipeline (1).

10. The method for installing a pipeline and a bracket according to claim 1, characterized in that: The accessories (2) are valves, flanges and measuring instruments.

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