Dynamic balance screw plug mounting method

Abstract

The invention discloses a dynamic balance plug screw mounting method. When a rotor is subjected to online dynamic balance, a dynamic balance screw plug is often required to be mounted on the rotor through a manhole or a corresponding window after a unit is cooled; a conventional installation method wastes time and labor, consumes manpower and seriously affects the working efficiency. The method comprises the following steps; when the screw plug needs to be installed, the end portion of the supporting rod is inserted into the assembling groove of the screw plug, and then the sliding sleeve slides to enable the end portion of the connecting rod set to be located at the position of the screw plug. Then each fixing nut is unscrewed, then the connecting rod group slides to enable the pull rod to abut against the outer ring surface of the screw plug, and then the fixing nuts are screwed; the whole device penetrates through the window to be installed on the rotor, then the handle rod is held by hand to rotate the supporting rod, and the screw plug can be installed. The method is used for installing the dynamic balance screw plug.

Description

Technical Field

[0001] The invention relates to a method for installing a dynamic balancing screw plug. Background Art

[0002] The gas turbine is the core component of the unit. During the operation of the unit, the unstable center of gravity of the rotor will cause abnormal vibration, which will lead to rotor damage. In order to avoid abnormal vibration of the rotor, it is usually necessary to conduct an off-table or online dynamic balancing test on the rotor. By measuring the rotor speed, phase and amplitude, the weight and angle of the required additional counterweight are calculated, so that the rotor can reach a relatively ideal balance state to ensure that no abnormal vibration occurs.

[0003] When performing online dynamic balancing on the rotor, it is often necessary to wait until the unit has cooled down before installing the dynamic balancing plug on the rotor through a manhole or corresponding window. Conventional installation methods are time-consuming and labor-intensive, consuming manpower and seriously affecting work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a method for installing a dynamic balancing screw plug.

[0005] The above purpose is achieved through the following technical solutions: A method for installing a dynamic balancing screw plug, comprising a support rod and a sliding sleeve, wherein the sliding sleeve is in sliding engagement with the support rod, and two connecting rod groups pass through the sliding sleeve and are connected to the sliding sleeve by bolts; The sliding sleeve comprises a square ring sleeve, and fixing plates are respectively fixed on both sides of the square ring sleeve. Notches for the connecting rod group to pass through are respectively opened on the upper and lower sides of the fixing plates.

[0006] In the dynamic balancing screw plug installation method, the connecting rod group includes two cylindrical pull rods, and the two cylindrical pull rods are fixed by a connecting plate.

[0007] In the dynamic balancing screw plug installation method, a handlebar is fixed to the end of the support rod. Beneficial effects

[0008] 1. When using the present invention, the end of the support rod is inserted into the assembly groove of the screw plug, and then the sliding sleeve is slid so that the end of the connecting rod group is at the screw plug, and then each fixing nut is loosened, and then the connecting rod group is slid so that the pull rod is against the outer ring surface of the screw plug, and then the fixing nut is tightened. In this way, the connecting rod group can effectively support the screw plug, and the device is installed on the rotor through the window. Then, the handle rod is manually held to rotate the support rod, and the screw plug will be installed. There is no need to manually drill into the manhole for installation, which ensures safety.

[0009] 2. The present invention has a simple structure, and the position of the connecting rod group can be adjusted, making it suitable for screw plugs of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 yes Figure 1 A magnified view of part A; Figure 3 It is a structural diagram of the connecting rod group; Figure 4 It is a front view of the present invention; Figure 5 It is a structural diagram of the sliding sleeve; Figure 6 It is a structural schematic diagram of the present invention and the screw plug when installed; Figure 7 This is a schematic diagram of the structure of the present invention after the screw plug is installed; Figure 8 It is a schematic diagram of the structure after the connecting rod group slides; In the figure: 2, baffle; 3, connecting rod assembly; 4, support rod; 5, sliding sleeve; 6, handlebar; 7, fixing nut; 8, connecting plate; 9, cylindrical pull rod; 10, notch; 11, square ring sleeve; 12, fixing plate; 13, screw plug; 14, assembly groove. DETAILED DESCRIPTION

[0011] like Figure 1-5 As shown, a method for installing a dynamic balancing screw plug includes the following steps: (1) When the screw plug needs to be installed, first insert the end of the support rod into the assembly groove of the screw plug, and then slide the sleeve so that the end of the connecting rod group is at the screw plug; (2) Then loosen each fixing nut, slide the connecting rod assembly so that its pull rod rests against the outer ring surface of the screw plug, and then tighten the fixing nut so that the connecting rod assembly can effectively support the screw plug; (3) Install the entire device onto the rotor through the window, then manually hold the handlebar to rotate the support rod to install the screw plug. There is no need to manually drill into the manhole for installation to ensure safety. After the screw plug is threaded onto the rotor, slide the sleeve to disengage the cylindrical pull rod from the screw plug. Continuing to rotate the entire device will allow the screw plug to continue to be installed without affecting the installation of the screw plug. After installation, unplug the device.

[0012] A method for installing a dynamic balancing screw plug, comprising a support rod 4 and a sliding sleeve 5, wherein the sliding sleeve is in sliding engagement with the support rod, the support rod being a square rod, and two connecting rod groups 3 passing through the sliding sleeve and being connected to the sliding sleeve by bolts; The sliding sleeve includes a square ring sleeve 11, and fixed plates 12 are fixed on both sides of the square ring sleeve. The fixed plates are square plates, and notches 10 for the connecting rod group to pass through are respectively opened on the upper and lower sides of the fixed plates.

[0013] In the method for installing a dynamic balancing screw plug, the connecting rod group includes two cylindrical pull rods 9, and the two cylindrical pull rods are fixed by a connecting plate 8.

[0014] During installation, the sliding sleeve is sleeved on the support rod, and the square ring sleeve of the sliding sleeve slides with the support rod. Each fixing plate of the sliding sleeve is provided with four notches, two on the upper side and two on the lower side, and the notches are opened vertically. Each cylindrical pull rod of the connecting rod group passes through its notch. One side of the cylindrical pull rod connected to the connecting plate is a screw. The two cylindrical pull rods of the connecting rod group are fixed by two connecting plates. Two fixing nuts are threaded on each cylindrical pull rod. The connecting plate and the cylindrical pull rod are welded and fixed. After installation, the position of the connecting rod group can be fixed by tightening the fixing nuts. In the method for installing a dynamic balancing screw plug, a handlebar 6 is fixed to the end of the support rod.

[0015] When the screw plug 13 needs to be installed, first insert the end of the support rod into the assembly groove 14 of the screw plug, then slide the sleeve so that the end of the connecting rod group is at the screw plug, then loosen each fixing nut, and then slide the connecting rod group so that the pull rod rests on the outer ring surface of the screw plug, and then tighten the fixing nut. In this way, the connecting rod group can effectively support the screw plug, and the entire device is installed on the rotor through the window. Then, hold the handle rod by hand to rotate the support rod to install the screw plug. There is no need to manually drill into the manhole for installation, which ensures safety. After the screw plug is threadedly connected to the rotor, slide the sleeve to disengage its cylindrical pull rod from the screw plug. Continuing to rotate the entire device can achieve the continued installation of the screw plug without affecting the installation of the screw plug. After installation, the device can be unplugged.

Claims

1. A method for installing a dynamic balancing screw plug, characterized by: The method comprises the following steps: (1) When the screw plug needs to be installed, first insert the end of the support rod into the assembly groove of the screw plug, and then slide the sleeve so that the end of the connecting rod group is at the screw plug; (2) Then loosen each fixing nut, slide the connecting rod assembly so that its pull rod rests against the outer ring surface of the screw plug, and then tighten the fixing nut, so that the connecting rod assembly can effectively support the screw plug; (3) Install the entire device onto the rotor through the window, then manually hold the handlebar to rotate the support rod to install the screw plug. There is no need to manually drill into the manhole for installation to ensure safety. After the screw plug is threaded onto the rotor, slide the sleeve to disengage the cylindrical pull rod from the screw plug. Continuing to rotate the entire device will allow the screw plug to continue to be installed without affecting the installation of the screw plug. After installation, unplug the device.

2. A method for installing a dynamic balancing screw plug according to claim 1, characterized in that: The sliding sleeve is in sliding engagement with the support rod, and the two connecting rod groups pass through the sliding sleeve and are connected to the sliding sleeve by bolts; The sliding sleeve comprises a square ring sleeve, and fixing plates are respectively fixed on both sides of the square ring sleeve. Notches for the connecting rod group to pass through are respectively opened on the upper and lower sides of the fixing plates.

3. A method for installing a dynamic balancing screw plug according to claim 2, characterized in that: The connecting rod assembly includes two cylindrical pull rods, and the two cylindrical pull rods are fixed by a connecting plate.

4. A method for installing a dynamic balancing screw plug according to claim 3, characterized in that: A handlebar is fixed to the end of the support rod.

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