Installation method of TXZDC type elastic support

Abstract

The invention provides an installation method of a TXZDC type elastic support hanger in the field of ships. By measuring and calculating the static rigidity of the TXZDC type elastic support hanger or judging the installation sequence and principle of the TXZDC type elastic support hanger under equipment according to the deformation of the TXZDC type elastic support hanger under the rated load, and quantitatively evaluating the installation quality of the TXZDC type elastic support hanger, the vibration reduction effect of the TXZDC type elastic support hanger can be fully exerted by selecting the TXZDC type elastic support hanger; the problem that the installation sequence of the TXZDC type elastic support hanger is disordered when an equipment system pipeline is installed is solved, a method and a basis are provided for smooth installation of the elastic support hanger, and meanwhile the vibration reduction effect of the TXZDC type elastic support hanger is achieved and guaranteed. The installation method of the TXZDC type elastic support hanger is suitable for being applied to the installation method of the TXZDC type elastic support hanger.

Description

Technical Field

[0001] The invention relates to elastic supports in the field of ship pipelines, and in particular to an installation method of a TXZDC type elastic support. Background Art

[0002] The acoustic stealth performance of a ship is an important performance indicator of the ship. Various new vibration and noise reduction measures have been taken to achieve this indicator. The most common way is to use a large number of vibration reduction components in the main noise source system. At present, the research and development of elastic supports in my country is relatively fast. A series of TXZDC elastic supports with good vibration reduction effect and good impact resistance have been developed, which have played a significant role in improving the acoustic stealth performance of ships. The correct method of installing TXZDC elastic supports on pipelines will greatly affect their vibration isolation effect.

[0003] However, the inventors of this application found that the above technology has at least the following technical problems in the process of implementing the technical solution of the invention in the embodiment of this application:

[0004] The traditional installation method is to select TXZDC elastic supports that meet the technical requirements and randomly install them on the system pipeline, which cannot maximize its vibration isolation effect. It is impossible to conduct quantitative inspection on the tightness of its installation on the pipeline. In order to achieve high-quality installation of TXZDC elastic supports, it is urgent to study a scientific and reliable TXZDC elastic support installation method to achieve true acoustic stealth performance. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the embodiment of the present application provides a method for installing a TXZDC type elastic support for the quantitative evaluation of the installation quality of the TXZDC type elastic support and the problem of ensuring that the selection of the TXZDC type elastic support can give full play to its vibration reduction effect. The method measures the gap between the lower contact surface of the elastic support and the mounting surface of the bracket, solves the problem of the disordered installation order of the TXZDC type elastic support and the inability to verify the degree of tightening during equipment installation, provides a method and basis for the smooth installation of the TXZDC type elastic support, and also realizes and guarantees the vibration reduction effect of the TXZDC type elastic support, solving the technical problems of the TXZDC type elastic support.

[0006] The solution adopted by the embodiment of the present application to solve the technical problem is:

[0007] A method for installing a TXZDC type elastic support comprises the following steps:

[0008] Step 1: Observe the appearance of the TXZDC elastic support and check if there are any problems that affect its performance and safety, and whether it meets the installation and use requirements;

[0009] Step 2: Fasten the TXZDC elastic support to the test platform, and use the static stiffness test device of the vibration reduction element to preload the TXZDC elastic support to 1.25 times the rated load, unit: Newton N;

[0010] Step 3: TXZDC elastic support gradually loads from 0 to 0.9 times the rated load, that is, 0.9P 0 , record the static deformation value X of TXZDC elastic support under the corresponding load 0.9 , unit: meter m, then add 1.1 times the rated load, that is, 1.1P 0 , record the static deformation value X of TXZDC elastic support under the corresponding load 1.1 , unit: meter m;

[0011] Step 4: According to the X recorded in step 3 0.9 and X 1.1 The result is put into the following formula to calculate the static stiffness of the TXZDC elastic support:

[0012]

[0013] Step 5: The TXZDC elastic supports to be installed on the pipeline are tested and calculated according to steps 2 to 4. The static stiffness of the TXZDC elastic supports is: K 1 , K 2 , K 3 , K 4 , ... K n The above calculation process is calculated by the system of the static stiffness test device of the vibration reduction element, and no manual calculation is required;

[0014] Step 6: Sort by the static stiffness values ​​of the TXZDC elastic supports output by the static stiffness test device for vibration reduction elements:

[0015] Example: K 1 <K 2 <K 3 <K 4 ;

[0016] Step 7: According to the arrangement principle of pipeline supports and hangers, elastic supports with large static stiffness are placed at the inlet and outlet of the equipment, elastic supports with large static stiffness are placed near valves, filters and other pipe accessories, and elastic supports with small stiffness are placed at locations with small pipeline vibrations;

[0017] Step 8: The TXZDC elastic supports installed in the same main noise source system pipeline must meet the following requirements: The deviation between the static stiffness of the same type of TXZDC elastic supports shall not exceed 20% of the rated static stiffness;

[0018] |K4 -K 1 |≤20%K;

[0019] Step 9: Use stainless steel fasteners to tighten the upper and lower clamps of the TXZDC elastic support. Use a torque wrench to tighten. The tightening torque of TXZDC type 090 is 25N / M, the tightening torque of TXZDC type 140 is 60N / M, the tightening torque of TXZDC type 160 is 60N / M, and the tightening torque of TXZDC type 220 is 60N / M.

[0020] Step 10: The clearance limit between the elastic support and the support bracket installation surface is: a 0.05mm feeler gauge should not be inserted into 2 / 3 of the circumference of the contact surface, the part that can be inserted should be dispersed, and the insertion depth should not exceed 15mm.

[0021] Positive effect: the present invention measures and calculates the static stiffness of TXZDC elastic supports or determines the order and principle of installing TXZDC elastic supports under equipment according to the deformation under the rated load of TXZDC elastic supports, and quantitatively evaluates the installation quality of TXZDC elastic supports, thereby ensuring that the selection of TXZDC elastic supports can give full play to their vibration reduction effects, solving the problem of chaotic installation order of TXZDC elastic supports during equipment system pipeline installation, providing a method and basis for the smooth installation of elastic supports, and also realizing and ensuring the vibration reduction effect of TXZDC elastic supports.

[0022] It is suitable for use as an installation method for TXZDC type elastic supports. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 This is a schematic diagram of the structure of this embodiment. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Although the embodiments of the present invention have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention.

[0026] As shown in the figure, a method for installing a TXZDC type elastic support includes the following steps:

[0027] Step 1: Take out the TXZDC elastic support installed on the seawater system pipeline and observe whether there is any external damage such as debonding, cracking, paint, scratches, etc.

[0028] Step 2: Check whether its flatness meets the installation surface flatness limit of 0.05mm;

[0029] Step 3: Fasten the TXZDC elastic support on the test platform, use the vibration reduction element static stiffness test device to start preloading the TXZDC elastic support, gradually load it to 0.9 times the rated load, and then add it to 1.1 times the rated load, and record the static deformation value of the TXZDC elastic support under the corresponding load, unit: m;

[0030] Step 4: According to the following formula, the static stiffness test device of the vibration reduction element calculates the static stiffness of the TXZDC elastic support:

[0031]

[0032] Step 5: The static stiffness of the TXZDC elastic supports to be installed under the equipment are: K 1 =539, K 2 =939, K 3 =716, K 4 =665;

[0033] Step 6: Sort by calculated TXZDC elastic support static stiffness values:

[0034] K 1 <K 4 <K 3 <K 2

[0035] Step 6: According to the same system and the same type of TXZDC elastic support static stiffness deviation between shall not be greater than 20% of the rated static stiffness, the K value can be obtained by consulting the type spectrum;

[0036] Operation: |K 2 -K 1 |≤20%K979-519=460≥20%*900

[0037] The static stiffness deviation of the above TXZDC elastic support is large, so it is necessary to reselect TXZDC elastic support and complete the static stiffness test. After the static stiffness of the newly selected 400TXZDC elastic support is tested by the static stiffness test device of the vibration reduction element, the static stiffness is: K 5 =673;

[0038] Step 7: K 5 Alternative K 2 , after reordering, K 1 =636, K 5 =673, K 3 =716, K 4 =665,K 1 <K 4 <K 5 <K 3 ;

[0039] Step 8: According to the following requirements

[0040] Operation: |K 2 -K 1 |≤20%K716-636=86<20%*900

[0041] Step 9: After screening, determine that the TXZDC elastic support installed under the sampling vacuum pump is K 1 , K 4 , K 5 , K 3 Corresponding TXZDC elastic support;

[0042] Step 10: According to the bracket layout principle, determine the installation position of the pipe bracket, and conduct on-site sampling and production. After processing, weld at the corresponding position of the pipeline;

[0043] Step 11: Set the static stiffness to K 3 The TXZDC elastic support is placed at the inlet and outlet of the pipeline connecting the heavy end of the equipment, and the static stiffness is K 5 The TXZDC elastic support is placed at the pipe inlet and outlet at the far end of the equipment, with a static stiffness of K 4 The TXZDC elastic support is placed near the valve filter of the inlet and outlet pipelines;

[0044] Step 12: Assemble and install the TXZDC elastic support and the corresponding support bracket, and preliminarily tighten the support bracket installation surface and the contact surface of the elastic support lower clamp;

[0045] Step 13: Place the gasket on the mounting surface of the lower clamp, and fasten the upper clamp, the gasket and the lower clamp with the hexagon socket bolts. Use a torque wrench to tighten. When the torque reaches 25N / M, stop tightening.

[0046] Step 14: After tightening the upper and lower clamps, tighten the bolts between the contact surface of the lower clamp and the mounting surface of the support bracket to ensure that the elastic support and the support bracket are firmly installed.

[0047] Step 15: When the elastic supports and support brackets are fully installed, use a feeler gauge to measure the gap between the contact surface of the lower clamp and the support bracket. The gap measurement should meet the requirement that a 0.05mm feeler gauge should not be inserted into 2 / 3 of the circumference of the contact surface, and the part that can be inserted should be dispersed, and the insertion depth should not exceed 15mm. The installation is effective and tight.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for installing a TXZDC type elastic support, characterized by: The steps include: Step 1: Observe the appearance of the TXZDC elastic support and check if there are any problems that affect its performance and safety, and whether it meets the installation and use requirements; Step 2: Fasten the TXZDC elastic support to the test platform, and use the static stiffness test device of the vibration reduction element to preload the TXZDC elastic support to 1.25 times the rated load, unit: Newton N; Step 3: Load the TXZDC elastic support gradually from 0 to 0.9 times the rated load, that is, 0.9P0, and record the static deformation value X of the TXZDC elastic support under this load. 0.9 , unit: m, then add to 1.1 times the rated load, that is, 1.1P0, record the static deformation value X of the TXZDC elastic support under this load 1.1 , unit: meter m; Step 4: According to the X recorded in step 3 0.9 and X 1.1 The result is put into the following formula to calculate the static stiffness of the TXZDC elastic support: Step 5: The TXZDC elastic supports to be installed on the pipeline are tested and calculated according to steps 2 to 4. The static stiffness of the TXZDC elastic supports are: K1, K2, K3, K4, ... K n The above calculation process is calculated by the system of the static stiffness test device of the vibration reduction element, and no manual calculation is required; Step 6: Sort by the static stiffness values ​​of the TXZDC elastic supports output by the static stiffness test device for vibration reduction elements: Example: K1<K2<K3<K4; Step 7: According to the arrangement principle of pipeline supports and hangers, elastic supports with large static stiffness are placed at the inlet and outlet of the equipment, elastic supports with large static stiffness are placed near valves, filters and other pipe accessories, and elastic supports with small stiffness are placed at locations with small pipeline vibrations; Step 8: The TXZDC elastic supports installed in the same main noise source system pipeline must meet the following requirements: The deviation between the static stiffness of the same type of TXZDC elastic supports shall not exceed 20% of the rated static stiffness; |K4-K1|≤20%K; Step 9: Use stainless steel fasteners to tighten the upper and lower clamps of the TXZDC elastic support. Use a torque wrench to tighten. The tightening torque of TXZDC type 090 is 25N / M, the tightening torque of TXZDC type 140 is 60N / M, the tightening torque of TXZDC type 160 is 60N / M, and the tightening torque of TXZDC type 220 is 60N / M. Step 10: The clearance limit between the elastic support and the support bracket installation surface is: a 0.05mm feeler gauge should not be inserted into 2 / 3 of the circumference of the contact surface, the part that can be inserted should be dispersed, and the insertion depth should not exceed 15mm.

Images