Shock absorber and steam turbine

Abstract

The invention provides a shock absorber and a steam turbine. The shock absorber comprises a first cylinder barrel and a second cylinder barrel, the first cylinder barrel and the second cylinder barrel are connected in a sliding mode in the first direction, a first cavity is defined by the first cylinder barrel and the second cylinder barrel, and oil is contained in the first cavity; annular reinforced supporting pieces are arranged on the peripheral surface of the first cylinder barrel and the peripheral surface of the second cylinder barrel; the built-in cylinder barrel group is arranged in the first cavity, the built-in cylinder barrel group is provided with a built-in cavity, the built-in cavity is provided with a spring, the spring can generate elastic deformation in the first direction, the built-in cylinder barrel group can stretch out and draw back in the first direction, and the built-in cylinder barrel group is provided with a built-in cavity. The two ends, in the first direction, of the built-in cylinder barrel set are connected with the first cylinder barrel and the second cylinder barrel correspondingly. Therefore, the shock absorber has the advantages of being stable in structure and long in service life.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorption, and in particular to a shock absorber and a steam turbine. Background Art

[0002] The shock absorbing device, also known as the shock absorber, is mainly used to suppress the shock when the spring rebounds after absorbing the shock and the impact from the road. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road, the spring itself will still have reciprocating motion, and the shock absorber is used to suppress this spring jumping. If the shock absorber is too soft, the car body will jump up and down. If the shock absorber is too hard, it will bring too much resistance and hinder the normal operation of the spring. In the process of modifying the suspension system, a hard shock absorber must be matched with a hard spring, and the hardness of the spring is closely related to the weight of the car. Therefore, heavier cars generally use harder shock absorbers. The device connected to the shock-inducing crankshaft is used to counteract the torsional vibration of the crankshaft (that is, the phenomenon that the crankshaft twists due to the impact force of the cylinder ignition). In the related technology, when subjected to reciprocating vibration shock, the components are prone to metal fatigue under long-term stress, resulting in metal deformation or even structural fracture. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a shock absorber and a steam turbine.

[0004] The shock absorber according to the embodiment of the present invention comprises:

[0005] A first cylinder and a second cylinder, wherein the first cylinder and the second cylinder are connected by sliding in a first direction, the first cylinder and the second cylinder define a first cavity, the first cavity contains oil, and the outer circumferential surfaces of the first cylinder and the second cylinder are both provided with an annular reinforcing support member;

[0006] A built-in cylinder group, wherein the built-in cylinder group is arranged in the first cavity, the built-in cylinder group has a built-in cavity, the built-in cavity has a spring, the spring can be elastically deformed in the first direction, the built-in cylinder group can be extended and retracted in the first direction, and the two ends of the built-in cylinder group in the first direction are respectively connected to the first cylinder and the second cylinder.

[0007] Therefore, the shock absorber according to the embodiment of the present invention has the advantages of stable structure and long service life.

[0008] In some embodiments, the first cylinder includes a first sleeve and a sleeve connected in sequence in the first direction;

[0009] The second cylinder comprises a second sleeve and an embedded sleeve which are sequentially connected in the first direction, at least a portion of the embedded sleeve is located in the sleeve, and the sleeve is slidably connected to the embedded sleeve in the first direction;

[0010] The reinforcing support member is arranged on the outer sides of the first sleeve and the second sleeve.

[0011] In some embodiments, the outer sides of the first sleeve and the second sleeve are each provided with a plurality of reinforcing support members sequentially arranged in the first direction;

[0012] The reinforcing support member includes a plurality of reinforcing support rings in the inner and outer directions.

[0013] In some embodiments, a first reinforcing support member and a second reinforcing support member are disposed on the outer side of the first sleeve, and the thickness of the second reinforcing support member is greater than the thickness of the first reinforcing support member;

[0014] A third reinforcement support member and a fourth reinforcement support member are provided on the outer side of the second sleeve, and the thickness of the fourth reinforcement support member is greater than the thickness of the third reinforcement support member;

[0015] The second reinforcing support member and the fourth reinforcing support member are located between the first reinforcing support member and the third reinforcing support member in the first direction.

[0016] In some embodiments, a first lifting ring group is provided on the outer side of the first cylinder, the first lifting ring group includes a first fixing pile, a first connecting pile and a first connecting shaft ring connected in sequence, and the first fixing pile is connected to the outer end surface of the first sleeve;

[0017] A second lifting ring group is disposed on the outer side of the second cylinder. The second lifting ring group includes a second fixing pile, a second connecting pile and a second connecting shaft ring which are connected in sequence. The second fixing pile is connected to the outer end surface of the second sleeve.

[0018] In some embodiments, the first connecting collar and the second connecting collar each include an inner ring and an outer ring that are relatively rotatable;

[0019] At least part of the first fixing pile is erected on both sides of the first connecting pile;

[0020] At least part of the second fixing pile is erected on both sides of the second connecting pile.

[0021] In some embodiments, the built-in cylinder group includes a telescopic rod, a spring and a guide tube arranged in sequence from the inside to the outside, the length directions of the telescopic rod and the guide tube are both the first direction, and the telescopic rod and the guide tube can be telescoped in the first direction.

[0022] In some embodiments, the guide tube contains oil, the guide tube defines the built-in cavity, the first end of the guide tube is provided with a first circulation valve, the second end of the guide tube is provided with a second circulation valve, and the built-in cavity is connected to the first cavity through the first circulation valve and the second circulation valve.

[0023] In some embodiments, the built-in cylinder assembly includes

[0024] A first piston assembly, the first piston assembly comprising a first pressing seat, a first supporting seat and a first piston column connected in sequence, the first pressing seat being connected to the first sleeve, the first piston column being connected to the first end of the telescopic rod and the first end of the guide tube, and the first pressing seat covering the outside of a portion of the first supporting seat;

[0025] A second piston assembly, the second piston assembly comprising a second pressing seat, a second supporting seat and a second piston column connected in sequence, the second pressing seat being connected to the second sleeve, the second piston column being connected to the second end of the telescopic rod and the second end of the guide tube, and the second pressing seat covering the outside of a portion of the second supporting seat;

[0026] The first piston column and the second piston column both extend into the guide tube, and two ends of the spring abut against the first piston column and the second piston column respectively.

[0027] The present invention also provides a steam turbine, comprising the above-mentioned shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a shock absorber according to an embodiment of the present invention.

[0029] Figure 2 is a schematic diagram of a built-in cylinder group according to an embodiment of the present invention.

[0030] Figure 3 is a schematic diagram of a first suspension ring group according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] 1. first lifting ring set, 101. first connecting shaft ring, 102. first connecting pile, 103. first fixing pile;

[0033] 2. first cylinder, 201. first sleeve, 202. first reinforcing support member, 203. second reinforcing support member, 204. sleeve;

[0034] 3. second cylinder barrel, 301. second sleeve, 302. third reinforcing support member, 303. fourth reinforcing support member, 304. embedded cylinder;

[0035] 4. second lifting ring set, 401. second connecting shaft ring, 402. second connecting pile, 403. second fixing pile;

[0036] 5. Second piston assembly, 501. Second pressing seat, 502. Second supporting seat, 503. Second piston rod, 504. Second flow valve;

[0037] 6. built-in cylinder group, 601, guide tube, 602, telescopic rod, 603, spring;

[0038] 7. The first piston assembly, 701. The first clamping seat, 702. The first supporting seat, 703. The first piston rod, 704. The first circulation valve. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] The shock absorber according to the embodiment of the present invention is described below with reference to the accompanying drawings. Figures 1 to 3 As shown, the shock absorber according to the embodiment of the present invention includes an internal cylinder group 6 , a first cylinder 2 and a second cylinder 3 .

[0041] The first cylinder 2 and the second cylinder 3 are connected in a sliding manner in a first direction, and the first cylinder 2 and the second cylinder 3 define a first cavity, and the first cavity contains oil. The outer circumferential surfaces of the first cylinder 2 and the second cylinder 3 are both provided with an annular reinforcing support member, and the reinforcing support member can improve the structural strength of the first cylinder 2 and the second cylinder 3 in the circumferential direction. For example, the first cylinder 2 and the second cylinder 3 are connected in a sliding manner in the up-down direction.

[0042] In some embodiments, the first cylinder 2 includes a first sleeve 201 and a sleeve 204 connected in sequence in the first direction. The second cylinder 3 includes a second sleeve 301 and an insert 304 connected in sequence in the first direction, at least a portion of the insert 304 is located in the sleeve 204, and the sleeve 204 is slidably connected to the insert 304 in the first direction, so that the first cylinder 2 and the second cylinder 3 can be slidably connected in the first direction.

[0043] The reinforcing support members are arranged outside the first sleeve 201 and the second sleeve 301. Specifically, the outsides of the first sleeve 201 and the second sleeve 301 are each provided with a plurality of reinforcing support members arranged in sequence in the first direction. Thus, multiple positions of the first sleeve 201 and the second sleeve 301 can be reinforced in the first direction.

[0044] The reinforcing support member includes a plurality of reinforcing support rings in the inner and outer directions. The plurality of reinforcing support rings can be arranged sequentially in the inner and outer directions. The thickness of the reinforcing support member can be changed by setting the number of reinforcing support rings.

[0045] In some embodiments, the first sleeve 201 is provided with a first reinforcing support member 202 and a second reinforcing support member 203 on the outside, and the thickness of the second reinforcing support member 203 is greater than the thickness of the first reinforcing support member 202. The second sleeve 301 is provided with a third reinforcing support member 302 and a fourth reinforcing support member 303 on the outside, and the thickness of the fourth reinforcing support member 303 is greater than the thickness of the third reinforcing support member 302. The second reinforcing support member 203 and the fourth reinforcing support member 303 are located between the first reinforcing support member 202 and the third reinforcing support member 302 in the first direction. Thus, the thickness of the reinforcing support member located in the middle position in the first direction can be larger.

[0046] In some embodiments, a first lifting ring group 1 is provided on the outer side of the first cylinder 2, and the first lifting ring group 1 includes a first fixing pile 103, a first connecting pile 102 and a first connecting shaft ring 101 which are connected in sequence, and the first fixing pile 103 is connected to the outer end surface of the first sleeve 201. At least part of the first fixing pile 103 is set on both sides of the first connecting pile 102, so that the connection can be more stable.

[0047] A second lifting ring group 4 is provided on the outer side of the second cylinder 3. The second lifting ring group 4 includes a second fixing pile 403, a second connecting pile 402 and a second connecting shaft ring 401 connected in sequence. The second fixing pile 403 is connected to the outer end surface of the second sleeve 301. At least part of the second fixing pile 403 is arranged on both sides of the second connecting pile 402, so that the connection can be more stable.

[0048] The first connecting shaft ring 101 and the second connecting shaft ring 401 both include an inner ring and an outer ring that can rotate relative to each other. For example, the first connecting shaft ring 101 and the second connecting shaft ring 401 are bearing structures.

[0049] Elastic materials are provided inside the first fixing pile 103 and the second fixing pile 403 so that the first lifting ring group 1 and the second lifting ring group 4 can withstand stress conduction at both ends of the first direction, provide effective support and protection for other structures, and enhance the structural stability of the entire device.

[0050] The built-in cylinder group 6 is arranged in the first cavity, the built-in cylinder group 6 has a built-in cavity, the built-in cavity has a spring 603, the spring 603 can be elastically deformed in the first direction, the built-in cylinder group 6 can be extended in the first direction, and the two ends of the built-in cylinder group 6 in the first direction are respectively connected to the first cylinder 2 and the second cylinder 3. Specifically, the ends of the two relatively retractable parts of the built-in cylinder group 6 are respectively connected to the first cylinder 2 and the second cylinder 3, and when the first cylinder 2 and the second cylinder 3 are relatively contracted, the built-in cylinder group 6 can be driven to contract and the spring 603 can be driven to compress.

[0051] In some embodiments, the built-in cylinder group 6 includes a telescopic rod 602, a spring 603 and a guide tube 601 arranged in sequence from the inside to the outside, the length direction of the telescopic rod 602 and the guide tube 601 are both in the first direction, and the telescopic rod 602 and the guide tube 601 can be telescoped in the first direction. The guide tube 601 contains oil, and the guide tube 601 defines a built-in cavity. The first end of the guide tube 601 is provided with a first circulation valve 704, and the second end of the guide tube 601 is provided with a second circulation valve 504. The built-in cavity is connected to the first cavity through the first circulation valve 704 and the second circulation valve 504.

[0052] In some embodiments, the inner cylinder group 6 includes a first piston assembly 7 and a second piston assembly 5 .

[0053] The first piston assembly 7 includes a first clamping seat 701, a first supporting seat 702 and a first piston column 703 which are connected in sequence. The first clamping seat 701 is connected to the first sleeve 201 (inner wall surface), the first piston column 703 is connected to the first end portion (telescopic portion) of the telescopic rod 602 and the first end portion (telescopic portion) of the guide tube 601, and the first clamping seat 701 is covered on the outside of a portion of the first supporting seat 702.

[0054] The second piston assembly 5 includes a second clamping seat 501, a second supporting seat 502 and a second piston column 503 which are connected in sequence. The second clamping seat 501 is connected to the second sleeve 301 (inner wall surface), the second piston column 503 is connected to the second end portion (fixed portion) of the telescopic rod 602 and the second end portion (fixed portion) of the guide tube 601, and the second clamping seat 501 is covered on the outside of a portion of the second supporting seat 502.

[0055] Thus, the telescopic portion of the telescopic rod 602 and the telescopic portion of the guide tube 601 can be connected to the first cylinder 2 through the first piston assembly 7. The fixed portion of the telescopic rod 602 and the fixed portion of the guide tube 601 are connected to the second cylinder 3 through the second piston assembly 5. When the second piston assembly 5 and the second cylinder 3 move and contract relative to each other, the telescopic rod 602, the spring 603 and the guide tube 601 can be driven to contract in the first direction.

[0056] The first piston column 703 and the second piston column 503 are both extended into the guide tube 601, and the two ends of the spring 603 are respectively in contact with the first piston column 703 and the second piston column 503. For example, the first circulation valve 704 and the first piston column 703 are matched in one end of the guide tube 601, and the second circulation valve 504 and the second piston column 503 are matched in the other end of the guide tube 601.

[0057] Specifically, the telescopic rod 602 is a hydraulic telescopic rod, and the first cylinder 2 and the second cylinder 3 are provided with an oil inlet and outlet. When the first cylinder 2 and the second cylinder 3 are subjected to a force in the first direction so as to move relative to each other, the internal space thereof is filled with oil, so that when the first cylinder 2 and the second cylinder 3 are squeezed toward the middle after being subjected to the force, the friction between the oil and the inner wall and the internal friction of the liquid molecules form a damping force for vibration, thereby alleviating the vibration impact from the outside, and the oil in the first cylinder 2 and the second cylinder 3 can be discharged from the first cavity defined by the first cylinder 2 and the second cylinder 3 from the oil inlet and outlet. At the same time, the first reinforcing support 202, the second reinforcing support 203, the third reinforcing support 302 and the fourth reinforcing support 303 respectively provide structural force support in the lateral direction for the first cylinder 2 and the second cylinder 3, thereby reducing the deformation caused by vibration and squeezing, thereby improving the service life.

[0058] When the first cylinder 2 and the second cylinder 3 are squeezed toward the middle after being stressed, the first piston assembly 7 and the second piston assembly 5 are squeezed toward the first direction of the built-in cylinder group 6 so that the built-in cylinder group 6 can absorb energy, and at the same time, the extension spring 603 sleeved around the telescopic rod 602 is used to provide a reverse impact relief. In order to suppress the shock of the extension spring 603 when it rebounds after absorbing the shock, the middle telescopic rod 602 and the outer guide tube 601 and the oil filled in the inner space of the guide tube 601 provide a damping force for the vibration of the extension spring 603, so as to relieve the repeated rebound of the extension spring 603 due to the structural properties after being squeezed. On the other hand, the telescopic rod 602 and the guide tube 601 can protect the extension spring 603 from horizontal displacement during the stress or reset process.

[0059] After the oil inside the built-in cylinder group 6 is compressed, it will flow to the inside of the first cylinder 2 and the second cylinder 3 through the first circulation valve 704 and the second circulation valve 504 at both ends. The oil will generate enough damping force in the process of compression flow to push the first piston assembly 7 and the second piston assembly 5 in the opposite direction to offset the incoming vibration impact. The built-in cylinder group 6, the first piston assembly 7 and the second piston assembly 5 are used to squeeze and absorb energy in the first direction, and the extension spring 603 sleeved around the telescopic rod 602 is used to provide reverse impact relief. In order to suppress the shock when the extension spring rebounds after absorbing the shock, the middle telescopic rod 602 and the outer guide tube 601 and the oil filled in the inner space of the guide tube provide damping force for vibration, thereby facilitating shock reduction.

[0060] Therefore, the shock absorber according to the embodiment of the present invention has the advantages of stable structure and long service life.

[0061] The present invention also proposes a steam turbine. The steam turbine according to an embodiment of the present invention includes a shock absorber according to an embodiment of the present invention. The shock absorber according to an embodiment of the present invention can reduce vibration and noise for the steam turbine, thereby improving the stability and service life of the equipment.

[0062] Therefore, the steam turbine according to the embodiment of the present invention has the advantages of stable structure and long service life.

[0063] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A shock absorber, characterized in that: include: A first cylinder and a second cylinder, wherein the first cylinder and the second cylinder are connected by sliding in a first direction, the first cylinder and the second cylinder define a first cavity, the first cavity contains oil, and the outer circumferential surfaces of the first cylinder and the second cylinder are both provided with an annular reinforcing support member; A built-in cylinder group, wherein the built-in cylinder group is arranged in the first cavity, the built-in cylinder group has a built-in cavity, the built-in cavity has a spring, the spring can be elastically deformed in the first direction, the built-in cylinder group can be extended and retracted in the first direction, and the two ends of the built-in cylinder group in the first direction are respectively connected to the first cylinder and the second cylinder.

2. The shock absorber according to claim 1, characterized in that: The first cylinder includes a first sleeve and a sleeve connected in sequence in the first direction; The second cylinder comprises a second sleeve and an embedded sleeve which are sequentially connected in the first direction, at least a portion of the embedded sleeve is located in the sleeve, and the sleeve is slidably connected to the embedded sleeve in the first direction; The reinforcing support member is arranged on the outer sides of the first sleeve and the second sleeve.

3. The shock absorber according to claim 2, characterized in that: The outer sides of the first sleeve and the second sleeve are each provided with a plurality of reinforcing support members arranged in sequence in the first direction; The reinforcing support member includes a plurality of reinforcing support rings in the inner and outer directions.

4. The shock absorber according to claim 3, characterized in that: A first reinforcing support member and a second reinforcing support member are provided on the outer side of the first sleeve, and the thickness of the second reinforcing support member is greater than the thickness of the first reinforcing support member; A third reinforcement support member and a fourth reinforcement support member are provided on the outer side of the second sleeve, and the thickness of the fourth reinforcement support member is greater than the thickness of the third reinforcement support member; The second reinforcing support member and the fourth reinforcing support member are located between the first reinforcing support member and the third reinforcing support member in the first direction.

5. The shock absorber according to claim 2, characterized in that: A first lifting ring group is provided on the outer side of the first cylinder, the first lifting ring group includes a first fixing pile, a first connecting pile and a first connecting shaft ring which are connected in sequence, and the first fixing pile is connected to the outer end surface of the first sleeve; A second lifting ring group is disposed on the outer side of the second cylinder. The second lifting ring group includes a second fixing pile, a second connecting pile and a second connecting shaft ring which are connected in sequence. The second fixing pile is connected to the outer end surface of the second sleeve.

6. The shock absorber according to claim 5, characterized in that The first connecting shaft ring and the second connecting shaft ring each include an inner ring and an outer ring that are rotatable relative to each other; At least part of the first fixing pile is erected on both sides of the first connecting pile; At least part of the second fixing pile is erected on both sides of the second connecting pile.

7. The shock absorber according to claim 2, characterized in that: The built-in cylinder group includes a telescopic rod, a spring and a guide tube which are arranged in sequence from the inside to the outside. The length directions of the telescopic rod and the guide tube are both in the first direction. The telescopic rod and the guide tube can be telescoped in the first direction.

8. The shock absorber according to claim 7, characterized in that The guide tube contains oil, and defines the built-in cavity. A first flow valve is provided at the first end of the guide tube, and a second flow valve is provided at the second end of the guide tube. The built-in cavity is connected to the first cavity through the first flow valve and the second flow valve.

9. The shock absorber according to claim 8, characterized in that The built-in cylinder group includes A first piston assembly, the first piston assembly comprising a first pressing seat, a first supporting seat and a first piston column connected in sequence, the first pressing seat being connected to the first sleeve, the first piston column being connected to the first end of the telescopic rod and the first end of the guide tube, and the first pressing seat covering the outside of a portion of the first supporting seat; A second piston assembly, the second piston assembly comprising a second pressing seat, a second supporting seat and a second piston column connected in sequence, the second pressing seat being connected to the second sleeve, the second piston column being connected to the second end of the telescopic rod and the second end of the guide tube, and the second pressing seat covering the outside of a portion of the second supporting seat; The first piston column and the second piston column both extend into the guide tube, and two ends of the spring abut against the first piston column and the second piston column respectively.

10. A steam turbine, characterized in that: Comprising a shock absorber according to any one of claims 1-9.

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