Damping device for steam turbine generator unit

Abstract

The damping device comprises a bottom plate, supporting plates, a top plate, a connecting plate, a buffering mechanism, an adjusting mechanism, a recoil type exhaust shell, an exhaust hole and a pressurizing mechanism, the buffering mechanism is arranged on the upper portion of the bottom plate, the buffering mechanism is located between the supporting plates, the buffering mechanism is connected with the connecting plate, and the top plate is connected with the connecting plate. The adjusting mechanism is arranged on the upper portion of the connecting plate and makes contact with the top plate and the supporting plates, and the recoil type exhaust shell is arranged between the supporting plates. Through cooperation of the recoil type exhaust shell, the exhaust hole and the pressurizing mechanism, the function of reducing the compression speed of the spring in the buffer mechanism can be achieved, the energy absorption and release time can be prolonged, impact energy can be more evenly dispersed in the whole damping process, and then the reliability and durability of equipment operation can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbing equipment, in particular to a shock absorbing device for a steam turbine generator set. Background Art

[0002] A steam turbine generator set is a generator driven by a steam turbine. It is usually composed of a steam turbine, a generator, an exciter and other supporting components that operate coaxially. It can convert mechanical energy into electrical energy and is widely used in power plants, chemical industry, metallurgy and other fields. When a steam turbine generator set is used, a spring shock absorber is usually installed to buffer and reduce vibration of the running steam turbine generator set.

[0003] Although some existing spring shock absorbers can effectively achieve the function of buffering and shock absorption through the cooperation of springs and dampers when applied to steam turbine generator sets, when facing abnormal operating conditions of the steam turbine generator set such as sudden shutdown or restart caused by power grid failure, there is a possibility that the spring compression and reset speed will be too fast, resulting in excessive instantaneous impact force, which may easily have an adverse effect on the stability and service life of the equipment. Therefore, a shock absorption device for steam turbine generator sets is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a shock absorbing device for a steam turbine generator set, which can solve the problem that some existing spring shock absorbers, when applied to the steam turbine generator set, can effectively realize the function of buffering and shock absorption through the cooperation of the spring and the damper. However, when facing abnormal operating conditions of the steam turbine generator set such as sudden shutdown or restart caused by power grid failure, there is a possibility that the spring compression and reset speed are too fast, resulting in excessive instantaneous impact force, which in turn easily has an adverse effect on the stability and service life of the equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a shock absorbing device for a steam turbine generator set, comprising a bottom plate, a support plate, a top plate and a connecting plate, and further comprising:

[0006] A buffer mechanism, the buffer mechanism is arranged on the upper part of the bottom plate, the buffer mechanism is located between the support plates, and the buffer mechanism is connected to the connecting plate;

[0007] An adjusting mechanism, the adjusting mechanism being arranged on the upper portion of the connecting plate, the adjusting mechanism being in contact with the top plate, and the adjusting mechanism being in contact with the supporting plate;

[0008] a recoil exhaust casing, the recoil exhaust casing being disposed between the support plates;

[0009] an exhaust hole, the exhaust hole being provided at the lower portion of the recoil exhaust shell;

[0010] The pressurizing mechanism is slidably arranged on the inner wall of the recoil exhaust shell and is fixedly connected to the connecting plate.

[0011] Preferably, a rubber pad is provided at the lower portion of the bottom plate.

[0012] Preferably, the buffer mechanism includes a damper arranged on the upper part of the bottom plate, and two springs are arranged on the upper part of the damper, and the two springs are both connected to the connecting plate.

[0013] Preferably, the adjustment mechanism includes a bolt 1 arranged on the upper part of the connecting plate, a nut 1 is arranged on the outside of the bolt 1, and the nut 1 is in contact with the top plate; a bolt 2 is arranged on the lower part of the top plate, a nut 2 is arranged on the outside of the bolt 2, and the nut 2 is in contact with the support plate.

[0014] Preferably, the pressurizing mechanism includes a pressurizing plate slidably arranged on the inner wall of the recoil exhaust shell, and two connecting rods are provided on the upper part of the pressurizing plate. Both of the connecting rods are slidably connected to the recoil exhaust shell, and the two connecting rods are fixedly connected to the connecting plate.

[0015] Preferably, the pressure plates and connecting rods are provided in two groups, each group including one pressure plate and two connecting rods.

[0016] Preferably, the recoil exhaust casing and the connecting rod are both made of polypropylene plastic.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present application realizes the function of slowing down the compression speed of the spring through the setting of the recoil exhaust shell, exhaust hole and pressurizing mechanism. During the use of the device, when the connecting plate moves downward due to vibration, the spring will be gradually compressed. At the same time, the downward movement of the connecting plate will drive the connecting rod and the pressurizing plate in the pressurizing mechanism to move downward. This process will prompt the gas inside the recoil exhaust shell to be discharged through the exhaust hole. At this time, the pressurizing plate, the connecting rod and the connecting plate will be subjected to a reverse thrust force generated by the gas discharge. This force helps to slow down the speed at which the spring is compressed, thereby prolonging the time for energy absorption and release, so that the impact energy can be more evenly distributed throughout the shock absorption process, thereby improving the reliability and durability of the equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is the overall structural view of the utility model;

[0021] Figure 2 For this utility model Figure 1 The main structure view of the base plate in the

[0022] Figure 3 For this utility model Figure 2 The cross-sectional structural view of the support plate;

[0023] Figure 4 For this utility model Figure 1 Cross-sectional structural view of the recoil exhaust casing.

[0024] Description of reference numerals:

[0025] 1. Bottom plate; 2. Support plate; 3. Top plate; 4. Connecting plate; 5. Buffer mechanism; 51. Damper; 52. Spring; 6. Adjusting mechanism; 61. Bolt 1; 62. Nut 1; 63. Bolt 2; 64. Nut 2; 7. Recoil exhaust casing; 8. Exhaust hole; 9. Pressurizing mechanism; 91. Pressurizing plate; 92. Connecting rod; 10. Rubber pad. DETAILED DESCRIPTION

[0026] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1 to 4 , the utility model provides a technical solution:

[0028] A shock absorbing device for a steam turbine generator set comprises a bottom plate 1, a support plate 2, a top plate 3 and a connecting plate 4, and further comprises:

[0029] The buffer mechanism 5 is provided on the upper portion of the base plate 1 and is located between the support plates 2. The buffer mechanism 5 is connected to the connecting plate 4.

[0030] The adjusting mechanism 6 is provided on the upper portion of the connecting plate 4 , the adjusting mechanism 6 is in contact with the top plate 3 , and the adjusting mechanism 6 is in contact with the supporting plate 2 ;

[0031] A recoil exhaust shell 7 is provided between the support plates 2;

[0032] The exhaust hole 8 is provided at the lower portion of the recoil exhaust shell 7;

[0033] The pressurizing mechanism 9 is slidably arranged on the inner wall of the recoil exhaust casing 7 , and the pressurizing mechanism 9 is fixedly connected to the connecting plate 4 .

[0034] The support plate 2 is arranged on the upper part of the bottom plate 1 , and there are two support plates 2 . The top plate 3 is arranged above the support plates 2 . The connecting plate 4 is arranged below the top plate 3 and is located between the two support plates 2 .

[0035] Specifically, such as Figure 1 As shown, a rubber pad 10 is provided at the lower part of the base plate 1 to adapt to uneven ground.

[0036] Specifically, such as Figure 1 and Figure 2 As shown, the buffer mechanism 5 includes a damper 51 provided on the upper portion of the base plate 1 , and two springs 52 are provided on the upper portion of the damper 51 . Both springs 52 are connected to the connecting plate 4 .

[0037] Specifically, such as Figure 1 、 Figure 2 and Figure 3 As shown, the adjustment mechanism 6 includes a bolt 61 arranged on the upper part of the connecting plate 4, a nut 62 is arranged on the outside of the bolt 61, and the nut 62 is in contact with the top plate 3. A bolt 63 is arranged on the lower part of the top plate 3, a nut 64 is arranged on the outside of the bolt 63, and the nut 64 is in contact with the support plate 2.

[0038] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the pressurizing mechanism 9 includes a pressurizing plate 91 slidably arranged on the inner wall of the recoil exhaust shell 7, and two connecting rods 92 are provided on the upper part of the pressurizing plate 91. The two connecting rods 92 are both slidably connected to the recoil exhaust shell 7, and the two connecting rods 92 are fixedly connected to the connecting plate 4.

[0039] Specifically, such as Figure 1 and Figure 4 As shown, two groups of pressure plates 91 and connecting rods 92 are provided, each group includes one pressure plate 91 and two connecting rods 92 , which can provide sufficient reverse thrust force for the connecting plate 4 .

[0040] Specifically, such as Figure 1 and Figure 4 As shown, the recoil exhaust casing 7 and the connecting rod 92 are both made of polypropylene plastic, which has the characteristics of high hardness, light weight, and corrosion resistance, and can reduce the overall weight of the device.

[0041] Working Principle: When in use, fix the bottom plate 1 to the ground. Then, according to actual needs, adjust the top plate 3 to a suitable height through the coordination of bolt 1 61, nut 1 62, bolt 2 63 and nut 2 64. Then, fix the steam turbine generator set to the top plate 3 (the device is provided with multiple top plates 3, and multiple top plates 3 are fixedly connected to the steam turbine generator set);

[0042] When the steam turbine generator set is running, the vibration generated will be transmitted to the top plate 3, and then transmitted to the connecting plate 4 through the bolt 61. During this process, the synergistic effect of the damper 51 and the spring 52 can effectively disperse the vibration energy and achieve the effect of buffering and shock absorption. As the connecting plate 4 moves downward, the spring 52 will be gradually compressed. At the same time, the movement of the connecting plate 4 will also drive the connecting rod 92 to move downward synchronously. The downward movement of the connecting rod 92 will push the pressure plate 91 downward. This process prompts the gas inside the recoil exhaust shell 7 to be discharged through the exhaust hole 8. At this time, the pressure plate 91, the connecting rod 92 and the connecting plate 4 will be subjected to a reverse thrust force generated by the gas discharge. This force helps to slow down the speed at which the spring 52 is compressed, thereby extending the time for energy absorption and release, so that the impact energy can be more evenly distributed throughout the entire shock absorption process.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shock absorbing device for a steam turbine generator set, comprising a bottom plate (1), a support plate (2), a top plate (3) and a connecting plate (4), characterized in that: Also included are: A buffer mechanism (5), the buffer mechanism (5) being arranged on the upper portion of the bottom plate (1), the buffer mechanism (5) being located between the support plates (2), and the buffer mechanism (5) being connected to the connecting plate (4); An adjusting mechanism (6), the adjusting mechanism (6) being arranged on an upper portion of the connecting plate (4), the adjusting mechanism (6) being in contact with the top plate (3), and the adjusting mechanism (6) being in contact with the supporting plate (2); A recoil exhaust shell (7), the recoil exhaust shell (7) being arranged between the support plates (2); An exhaust hole (8), the exhaust hole (8) being provided at the lower portion of the recoil exhaust shell (7); A pressurizing mechanism (9) is slidably arranged on the inner wall of the recoil exhaust casing (7), and the pressurizing mechanism (9) is fixedly connected to the connecting plate (4).

2. The vibration damping device for a steam turbine generator set according to claim 1, characterized in that: A rubber pad (10) is provided at the lower part of the bottom plate (1).

3. The vibration damping device for a steam turbine generator set according to claim 2, characterized in that: The buffer mechanism (5) comprises a damper (51) arranged on the upper part of the base plate (1), two springs (52) are arranged on the upper part of the damper (51), and both of the two springs (52) are connected to the connecting plate (4).

4. The vibration damping device for a steam turbine generator set according to claim 3, characterized in that: The adjustment mechanism (6) includes a bolt (61) provided on the upper portion of the connecting plate (4), a nut (62) provided on the outside of the bolt (61), the nut (62) being in contact with the top plate (3), a bolt (63) provided on the lower portion of the top plate (3), a nut (64) provided on the outside of the bolt (63), the nut (64) being in contact with the support plate (2).

5. The vibration damping device for a steam turbine generator set according to claim 4, characterized in that: The pressurizing mechanism (9) includes a pressurizing plate (91) slidably arranged on the inner wall of the recoil exhaust shell (7), and two connecting rods (92) are arranged on the upper part of the pressurizing plate (91). The two connecting rods (92) are both slidably connected to the recoil exhaust shell (7), and the two connecting rods (92) are fixedly connected to the connecting plate (4).

6. The vibration damping device for a steam turbine generator set according to claim 5, characterized in that: The pressure plates (91) and connecting rods (92) are provided in two groups, each group including a pressure plate (91) and two connecting rods (92).

7. The vibration damping device for a steam turbine generator set according to claim 6, characterized in that: The recoil exhaust casing (7) and the connecting rod (92) are both made of polypropylene plastic.

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