A pump group mounting method with double-layer vibration isolation structure

Abstract

The application discloses a pump group installation method with a double-layer vibration isolation structure, which comprises the following steps: installing a ship body installation base according to a vertical pump group or a horizontal pump group; pre-installing a transfer base on the ship body installation base after the installation of the ship body installation base is completed; installing a lower layer vibration isolator on each transfer base; installing an intermediate base on the lower layer vibration isolator; connecting and fixing the intermediate base with the lower layer vibration isolator; installing an upper layer vibration isolator on the corresponding position of the intermediate base according to the connecting position of the pump group and the upper layer vibration isolator; hoisting the pump group on the upper layer vibration isolator to complete the installation of the pump group; and installing a pipe system and a fixing support according to the measured reserved pipe system settlement to complete the installation of the pump group. The application avoids the dislocation of the installation height of the pipe system due to the settlement of the pump group in the subsequent use process after the installation of the pipe system, thereby preventing the pipe system from being broken and prolonging the service life of the pump group.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, specifically relating to a pump set installation method with a double-layer vibration isolation structure. Background Technology

[0002] Pump sets are widely used in industrial production, primarily for transporting various fluids such as liquids and gases. During operation, pump sets generate vibrations and noise, which not only disturb the surrounding environment but also cause damage to the pump set itself. To reduce vibration and noise during pump operation, various vibration isolation devices are typically employed. However, current pump installation methods lack optimized solutions for the installation and use of double-layer vibration isolation devices, resulting in ineffective vibration and noise control. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pump set installation method with a double-layer vibration isolation structure. The method of this invention, by reserving the measurement of pipeline settlement, avoids the pipeline installation height from being misaligned due to pump settling during subsequent use, which could lead to pipeline rupture and improve the service life of the pump set.

[0004] To achieve the above-mentioned objectives, the technical solution provided by this invention patent is as follows:

[0005] A method for installing a pump unit with a double-layer vibration isolation structure, the method specifically includes the following steps:

[0006] S1, Vertical pump unit installation: First, install the hull mounting base at the vertical pump unit installation location. After the hull mounting base is installed, pre-install the adapter base at the four corners of the hull mounting base.

[0007] S2, install a lower vibration isolator on each adapter base, install an intermediate base on the lower vibration isolator, and connect and fix the support plates at the four corners of the intermediate base to the lower vibration isolator respectively. According to the connection position between the vertical pump group and the upper vibration isolator, install the upper vibration isolator in the corresponding position of the intermediate base.

[0008] S3. After the upper vibration isolator is installed, the vertical pump unit is hoisted to connect and fix the vertical pump unit to the upper vibration isolator. After the vertical pump unit is installed, the adapter base is fixedly connected to the mounting base.

[0009] S4. After the vertical pump unit is installed, install the rubber expansion joints at the pump unit inlet and outlet, measure the settlement of the reserved piping system, and install the piping system according to the measured settlement of the reserved piping system.

[0010] S5. After the vertical pump set piping system is installed, a fixed bracket is installed at the rubber expansion joint flange to support the piping system.

[0011] S6; Horizontal pump unit installation: First, install the hull mounting base at the horizontal pump unit installation location. After the hull mounting base is installed, pre-install the adapter base on both sides of the hull mounting base.

[0012] S7, install a lower vibration isolator on each adapter base, install a horizontal intermediate base 6 on the lower vibration isolator, and connect and fix the lower vibration isolator to both sides of the lower end of the horizontal intermediate base 6 respectively. According to the connection position between the horizontal pump group and the upper vibration isolator, install the upper vibration isolator at the corresponding position on both sides of the upper end of the horizontal intermediate base 6.

[0013] S8. After the upper vibration isolator is installed, the horizontal pump unit is hoisted to connect and fix the horizontal pump unit to the upper vibration isolator. After the horizontal pump unit is installed, the adapter base is fixedly connected to the mounting base.

[0014] S9. After the horizontal pump unit is installed, install the rubber expansion joints at the pump unit inlet and outlet, measure the settlement of the reserved piping system, install the piping system according to the measured settlement, and install fixed brackets at the rubber expansion joint flanges to support the piping system; the installation of the pump unit is completed.

[0015] Furthermore, the adapter base is a square gasket, which is welded and fixed to the hull mounting base. The flatness of the adapter base is no more than 1mm. The adapter base is drilled and connected to the external interface of the lower vibration isolator according to the installation position of the lower vibration isolator.

[0016] Furthermore, for 48 hours after the upper vibration isolator of the vertical pump unit is installed, the rubber expansion joints of the pump unit inlet and outlet are installed; for 48 hours after the upper vibration isolator of the horizontal pump unit is installed, the rubber expansion joints of the pump unit inlet and outlet are installed.

[0017] Furthermore, the measurement of the settlement of the reserved piping system includes the deformation of the upper vibration isolator and the deformation of the lower vibration isolator. Specifically, the measurement of the settlement of the reserved piping system is as follows: after the vertical or horizontal pump unit is installed, the vertical or horizontal pump unit is left to stand for 48 hours, and the deformation of the upper and lower vibration isolators is measured respectively; based on the measured deformation of the upper and lower vibration isolators and the settlement, an allowance is added, and the connection and installation of the connecting flange of the rubber expansion joint of the piping system and the pump unit are adjusted.

[0018] Furthermore, the deformation of the upper vibration isolator in the vertical and horizontal pump sets after 48 hours of static setting is 3-5 mm, the deformation of the lower vibration isolator in the vertical and horizontal pump sets after 48 hours of static setting is 5-8 mm, and the allowance for the subsidence is 3-5 mm.

[0019] Furthermore, when the piping system and the pump unit's rubber expansion joint are connected and installed together, the allowable crack width between the flanges at the connection point is no greater than 4.5 mm, the displacement is no greater than 5.4 mm, and the deviation of the connection installation spacing is less than 2% of the nominal length of the rubber expansion joint.

[0020] Furthermore, the fixed support includes a flange bracket and a fixed support. The flange bracket is bolted to the side of the rubber expansion joint flange. The upper end of the fixed support is connected to the flange bracket, and the lower end of the fixed support is connected and fixed to the hull deck. The upper end of the flange bracket is an arc-shaped plate with bolt holes. The bolt holes on the arc-shaped plate are aligned with the flange holes at the lower end of the side of the rubber expansion joint flange and fixed with bolts. A reinforcing rib is provided at the rear end of the flange bracket. The upper end of the fixed support supports the flange bracket, and a support reinforcing rib is provided at the rear end of the fixed support.

[0021] Based on the above technical solution, the pump set installation method with a double-layer vibration isolation structure of this invention has achieved the following technical advantages through practical application:

[0022] 1. This invention provides a pump unit installation method with a double-layer vibration isolation structure, enabling the installation of pump units equipped with double-layer vibration isolation devices. This effectively reduces pump unit vibration and noise interference, improves pump unit stability, and extends its service life. Compared with existing technologies, this invention has the advantages of simple operation, high adjustment precision, and good stability. Furthermore, the implementation of this invention effectively reduces the user's operational difficulty, reduces adjustment time and costs, and improves efficiency.

[0023] 2. The pump set installation method with a double-layer vibration isolation structure of the present invention, by pre-reserving the measurement of the settlement of the pipeline system, avoids the pipeline system from being misaligned due to the settlement of the pump set during subsequent use, which could lead to pipeline system rupture and improve the service life of the pump set.

[0024] 3. The pump set installation method with a double-layer vibration isolation structure of the present invention, through the use of fixed brackets, prevents the displacement generated when the pump set starts from being transmitted to the piping system connected to the pump set. The displacement when the pump set starts is compensated by the setting of rubber expansion joints and vibration isolators. The placement of fixed brackets transmits the vibration to the adjacent piping system, thereby improving the safety of the piping system. Attached Figure Description

[0025] Figure 1 This is a front view of the vertical pump unit installation method according to the present invention, which is a pump unit installation method with a double-layer vibration isolation structure.

[0026] Figure 2 This is a side view of the vertical pump unit installation method according to the present invention, which is a pump unit installation method with a double-layer vibration isolation structure.

[0027] Figure 3 This is a front view of the horizontal pump unit installation method according to the present invention, which is a pump unit installation method with a double-layer vibration isolation structure.

[0028] Figure 4 This is a side view of the horizontal pump unit installation method in the present invention, which is a method for installing a pump unit with a double-layer vibration isolation structure.

[0029] Figure 5 This is a front view of the fixed bracket installation in a pump group installation method with a double-layer vibration isolation structure according to the present invention.

[0030] Figure 6 This is a side view of the fixed bracket installation in a pump group installation method with a double-layer vibration isolation structure according to the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific examples shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0032] like Figure 1-6 The present invention pertains to a pump assembly installation method with a double-layer vibration isolation structure, which specifically includes the following steps:

[0033] S1, Vertical pump unit installation: First, install the hull mounting base at the vertical pump unit installation location. After the hull mounting base is installed, pre-install the adapter base 5 at the four corners of the hull mounting base.

[0034] S2, install a lower vibration isolator 3 on each adapter base 5, install an intermediate base 4 on the lower vibration isolator 3, and connect and fix the support plates at the four corners of the intermediate base 4 to the lower vibration isolator 3 respectively. According to the connection position between the vertical pump group and the upper vibration isolator 2, install the upper vibration isolator 2 at the corresponding position of the intermediate base 4.

[0035] S3, After the upper vibration isolator 2 is installed, the vertical pump unit is hoisted to connect and fix the vertical pump unit to the upper vibration isolator 2. After the vertical pump unit is installed, the adapter base 5 is fixedly connected to the mounting base.

[0036] S4. After the vertical pump unit is installed, install the rubber expansion joint 1 at the pump unit inlet and outlet, measure the settlement of the reserved piping system, and install the piping system according to the measured settlement of the reserved piping system.

[0037] S5. After the vertical pump set piping system is installed, a fixed bracket is installed at the rubber expansion joint 1 flange to support the piping system.

[0038] S6; Horizontal pump unit installation: First, install the hull mounting base at the horizontal pump unit installation position. After the hull mounting base is installed, pre-install the adapter base 5 on both sides of the hull mounting base.

[0039] S7, install a lower vibration isolator 3 on each adapter base 5, install a horizontal intermediate base 6 on the lower vibration isolator 3, and connect and fix the lower vibration isolator 3 on both sides of the lower end of the horizontal intermediate base 6. According to the connection position between the horizontal pump group and the upper vibration isolator 2, install the upper vibration isolator 2 at the corresponding positions on both sides of the upper end of the horizontal intermediate base 6.

[0040] S8. After the upper vibration isolator 2 is installed, the horizontal pump unit is hoisted to connect and fix the horizontal pump unit to the upper vibration isolator 2. After the horizontal pump unit is installed, the adapter base 5 is fixedly connected to the mounting base.

[0041] S9. After the horizontal pump unit is installed, install the rubber expansion joint 1 at the pump unit inlet and outlet, measure the settlement of the reserved piping system, install the piping system according to the measured settlement of the reserved piping system, and install a fixed bracket at the flange of the rubber expansion joint 1 to support the piping system; the installation of the pump unit is completed.

[0042] The adapter base is a square gasket. The adapter base is welded and fixed to the hull mounting base. The flatness of the adapter base is no more than 1mm. The adapter base is drilled according to the installation position of the lower vibration isolator 3 and connected to the external interface of the lower vibration isolator 3.

[0043] Forty-eight hours after the upper vibration isolator 2 of the vertical pump set is installed, the rubber expansion joint 1 is installed at the pump set inlet and outlet. Forty-eight hours after the upper vibration isolator 2 of the horizontal pump set is installed, the rubber expansion joint 1 is installed at the pump set inlet and outlet.

[0044] like Figure 1 and 2 As shown, the vertical pump unit's double-layer vibration isolation device consists of an upper vibration isolator 2, an intermediate base 4, and a lower vibration isolator 3. The weight of the entire pump unit is transmitted to the intermediate base 4 via the upper vibration isolator, and the intermediate base 4 is installed on the shipyard base via the lower vibration isolator 3. Pump unit vibration is eliminated through the upper and lower vibration isolators and the rubber expansion joint 1, reducing the transmission of pump unit vibration to the piping system and hull structure.

[0045] like Figure 3 and 4As shown, the horizontal pump double-layer vibration isolation device consists of an upper vibration isolator 2, a horizontal intermediate base 6, and a lower vibration isolator 3. The horizontal intermediate base 6 is usually a rectangular frame. The weight of the entire pump unit is transmitted to the horizontal intermediate base 6 through the upper vibration isolator. The horizontal intermediate base 6 is installed on the shipyard base through the lower vibration isolator 3. The vibration of the pump unit is eliminated through the upper and lower vibration isolators and the rubber expansion joint 1, reducing the transmission of pump unit vibration to the piping system and hull structure.

[0046] The measurement of settlement of the reserved piping system includes the deformation of the upper vibration isolator 2 and the lower vibration isolator 3. Specifically, after the vertical or horizontal pump unit is installed, it is left to stand for 48 hours, and the deformation of the upper vibration isolator 2 and the lower vibration isolator 3 is measured respectively. Based on the measured deformation of the upper vibration isolator 2 and the lower vibration isolator 3 and the settlement allowance, the connection and installation of the connecting flange of the rubber expansion joint 1 of the piping system and the pump unit are adjusted. By measuring the settlement of the reserved piping system, the installation height of the piping system is misaligned due to the settlement of the pump unit during subsequent use, which could lead to pipe breakage and improve the service life of the pump unit.

[0047] The deformation of the upper vibration isolator 2 in the vertical and horizontal pump sets after 48 hours of static setting is 3-5 mm, the deformation of the lower vibration isolator 3 in the vertical and horizontal pump sets after 48 hours of static setting is 5-8 mm, and the subsidence allowance is 3-5 mm.

[0048] When the piping system and the rubber expansion joint 1 of the pump unit are connected and installed together, the allowable crack between the flanges at the connection point is no more than 4.5 mm, the displacement is no more than 5.4 mm, and the deviation of the connection installation distance is less than 2% of the nominal length of the rubber expansion joint 1.

[0049] The fixed support includes a flange bracket 81 and a fixed support 82. The flange bracket 81 is bolted to the side of the flange 7 of the rubber expansion joint 1. The upper end of the fixed support 82 is connected to the flange bracket 81, and the lower end of the fixed support 82 is fixed to the hull deck. The upper end of the flange bracket 81 is an arc-shaped plate with bolt holes. The bolt holes on the arc-shaped plate are aligned with the flange holes at the lower end of the side of the flange of the rubber expansion joint 1 and fixed with bolts. A reinforcing rib 83 is provided at the rear end of the flange bracket 81. The upper end of the fixed support 82 supports the flange bracket 81, and a support reinforcing rib 84 is provided at the rear end of the fixed support 82. By using the fixed support 82, the displacement generated when the pump unit starts is not transmitted to the piping system connected to the pump unit. The displacement when the pump unit starts is compensated by the rubber expansion joint 1 and the vibration isolator. The placement of the fixed support 82 transmits the vibration to the adjacent piping system, improving the safety of the piping system.

[0050] Allow for cable connection slack

[0051] Pump sets equipped with double-layer vibration isolation devices have a large displacement at the moment of startup. The motor cable and grounding cable of the pump set need to have a certain margin to prevent the cables from being pulled and damaged during startup.

[0052] Reserved slat allowance

[0053] Since pump sets equipped with double-layer vibration isolation devices undergo significant displacement during startup or operation, a certain distance must be reserved around the pump set's surrounding grid. It is recommended that the distance between the grid and the pump set be greater than 50mm.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A method for installing a pump set with a double-layer vibration isolation structure, characterized in that, The method specifically includes the following steps: S1, Vertical pump unit installation: First, install the hull mounting base at the vertical pump unit installation location. After the hull mounting base is installed, pre-install the adapter base at the four corners of the hull mounting base. S2, install a lower vibration isolator on each adapter base, install an intermediate base on the lower vibration isolator, and connect and fix the support plates at the four corners of the intermediate base to the lower vibration isolator respectively. According to the connection position between the vertical pump group and the upper vibration isolator, install the upper vibration isolator in the corresponding position of the intermediate base. S3. After the upper vibration isolator is installed, the vertical pump unit is hoisted to connect and fix the vertical pump unit to the upper vibration isolator. After the vertical pump unit is installed, the adapter base is fixedly connected to the mounting base. S4. After the vertical pump unit is installed, install the rubber expansion joints at the pump unit inlet and outlet, measure the settlement of the reserved piping system, and install the piping system according to the measured settlement of the reserved piping system. The measurement of settlement of the reserved piping system includes the deformation of the upper vibration isolator and the lower vibration isolator. Specifically, after the vertical or horizontal pump unit is installed, it is left to stand for 48 hours, and the deformation of the upper and lower vibration isolators is measured respectively. Based on the measured deformation and settlement of the upper and lower vibration isolators, an allowance is added, and the connection and installation of the connecting flange of the rubber expansion joint between the piping system and the pump unit are adjusted. S5. After the vertical pump set piping system is installed, a fixed bracket is installed at the rubber expansion joint flange to support the piping system. S6, horizontal pump unit installation: First, install the hull mounting base at the horizontal pump unit installation location. After the hull mounting base is installed, pre-install the adapter base on both sides of the hull mounting base. S7, install a lower vibration isolator on each adapter base, install a horizontal intermediate base on the lower vibration isolator, and connect and fix the lower vibration isolator to both sides of the lower end of the horizontal intermediate base respectively. According to the connection position between the horizontal pump group and the upper vibration isolator, install the upper vibration isolator at the corresponding position on both sides of the upper end of the horizontal intermediate base. S8. After the upper vibration isolator is installed, the horizontal pump unit is hoisted to connect and fix the horizontal pump unit to the upper vibration isolator. After the horizontal pump unit is installed, the adapter base is fixedly connected to the mounting base. S9. After the horizontal pump unit is installed, install the rubber expansion joints at the pump unit inlet and outlet, measure the settlement of the reserved piping system, install the piping system according to the measured settlement, and install fixed brackets at the rubber expansion joint flanges to support the piping system; the installation of the pump unit is completed.

2. The pump set installation method with a double-layer vibration isolation structure according to claim 1, characterized in that, The adapter base is a square gasket. The adapter base is welded and fixed to the hull mounting base. The flatness of the adapter base is no more than 1mm. The adapter base is drilled according to the installation position of the lower vibration isolator and connected to the external interface of the lower vibration isolator.

3. The pump set installation method with a double-layer vibration isolation structure according to claim 1, characterized in that, For the vertical pump set, the upper vibration isolator is installed 48 hours after installation, and the rubber expansion joints are installed at the pump set inlet and outlet. For the horizontal pump set, the upper vibration isolator is installed 48 hours after installation, and the rubber expansion joints are installed at the pump set inlet and outlet.

4. The pump set installation method with a double-layer vibration isolation structure according to claim 1, characterized in that, The deformation of the upper vibration isolator in the vertical and horizontal pump sets after 48 hours of static setting is 3-5 mm, the deformation of the lower vibration isolator in the vertical and horizontal pump sets after 48 hours of static setting is 5-8 mm, and the subsidence allowance is 3-5 mm.

5. The pump set installation method with a double-layer vibration isolation structure according to claim 1, characterized in that, When the piping system and the pump unit's rubber expansion joint are connected and installed together, the allowable crack width between the flanges at the connection point is no more than 4.5 mm, the displacement is no more than 5.4 mm, and the deviation of the connection installation spacing is less than 2% of the nominal length of the rubber expansion joint.

6. The pump set installation method with a double-layer vibration isolation structure according to claim 1, characterized in that, The fixed support includes a flange bracket and a fixed support. The flange bracket is bolted to the side of the rubber expansion joint flange. The upper end of the fixed support is connected to the flange bracket, and the lower end of the fixed support is connected and fixed to the hull deck. The upper end of the flange bracket is an arc-shaped plate with bolt holes. The bolt holes on the arc-shaped plate are aligned with the flange holes at the lower end of the side of the rubber expansion joint flange and fixed with bolts. The rear end of the flange bracket is provided with a reinforcing rib. The upper end of the fixed support supports the flange bracket, and the rear end of the fixed support is provided with a support reinforcing rib.

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