Air inlet valve opening assisting device

Abstract

The invention relates to the technical field of valve opening and closing, in particular to an air inlet valve opening assisting device which comprises a main body component, an air inlet valve opening assisting component, an air inlet valve opening assisting component, an air inlet valve opening assisting component and an air inlet valve opening assisting component, and the main body component comprises a T-shaped rod, a triggering assembly and a limiting assembly, the functional part comprises a positioning assembly arranged outside the triggering assembly and an adaptive assembly arranged in the T-shaped rods, the middle portions of the pair of T-shaped rods are connected with the valve rod, in the process, the triggering assembly can slide towards the interiors of the T-shaped rods in the closing process of the pair of T-shaped rods, then the pair of T-shaped rods are locked, and therefore the valve rod is prevented from being damaged. At the moment, connection between the pair of T-shaped rods and the valve rod is completed, the trigger assembly is pushed to abut against the valve body device, the T-shaped rods are lifted under the counter-acting force to drive the valve rod to be opened, meanwhile, in the sliding process, the adaptive assembly can reduce friction force between the trigger assembly and the T-shaped rods, and the T-shaped rods are tightly matched with the valve rod; and the valve rod can be prevented from being bent by external force in the opening assisting process of the valve.

Description

Technical Field

[0001] The invention relates to the technical field of valve switches, in particular to an air intake valve opening assistance device. Background Art

[0002] The emergency drain valves currently used in power plants generally adopt positive-acting gas-controlled actuators (upper air intake), that is, they are closed when air intake is applied and opened when air loss occurs. Although this can ensure the sealing of the valve when it is closed, during the emergency opening stage of the valve, the pressure difference before and after the valve is large, causing the valve to become stuck or even difficult to open, thus affecting the smooth operation of the steam turbine unit and posing a major safety hazard. Summary of the invention

[0003] In view of the problem of valve opening being stuck in the above or existing technologies, the present invention is proposed.

[0004] Therefore, an object of the present invention is to provide an intake valve opening assisting device.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0006] A main body component, comprising a T-shaped rod, a trigger assembly disposed in the T-shaped rod, and a limiting assembly disposed outside the trigger assembly;

[0007] The functional component comprises a positioning component arranged outside the trigger component and an adapting component arranged inside the T-shaped rod.

[0008] As a preferred solution of the intake valve opening assisting device of the present invention, wherein: an arc groove is formed outside the T-shaped rod, and a limiting cavity is formed outside the T-shaped rod;

[0009] The trigger assembly comprises a concave rod arranged in the limiting cavity, a sliding groove opened outside the concave rod, and a trigger rod arranged at the end of the concave rod.

[0010] As a preferred solution of the intake valve opening assisting device of the present invention, wherein: the T-shaped rod is provided with an L-shaped limiting groove in the limiting chamber;

[0011] The limiting assembly includes a slider disposed in the L-shaped limiting groove, and a stop plate disposed at the end of the concave rod;

[0012] Wherein, the sliding block is connected to the concave rod.

[0013] As a preferred solution of the intake valve opening assisting device of the present invention, wherein: a positioning groove is provided outside the T-shaped rod;

[0014] The positioning assembly includes a positioning rod disposed outside the T-shaped rod, and a gripping rod disposed at the end of the concave rod;

[0015] Wherein, the positioning rod matches the positioning groove.

[0016] As a preferred solution of the intake valve opening assisting device of the present invention, wherein: a rolling groove is formed outside the T-shaped rod;

[0017] The adapter assembly includes a support rod arranged in the rolling groove and a roller wheel arranged outside the support rod.

[0018] As a preferred solution of the intake valve opening assisting device of the present invention, it further comprises a locking component;

[0019] The invention comprises a supporting component arranged in the triggering component, an output component arranged in the supporting component, a connecting component arranged in the supporting component, and a rotating component arranged at the end of the connecting component.

[0020] As a preferred solution of the intake valve opening assisting device of the present invention, wherein: the T-shaped rod is located in the limiting cavity and has an output groove;

[0021] The supporting assembly comprises an L-shaped rod arranged in the sliding groove, a movable groove 1 opened outside the L-shaped rod, and a spring arranged in the output groove.

[0022] As a preferred solution of the intake valve opening assisting device of the present invention, wherein: the T-shaped rod is provided with a guide groove in the limiting cavity;

[0023] The output assembly comprises a support rod arranged in the movable groove 1, an output rod arranged outside the support rod, and a guide rod arranged at the end of the output rod.

[0024] As a preferred solution of the intake valve opening assisting device of the present invention, the connecting assembly includes a rotating rod arranged in the movable groove 1, and a connecting rod arranged at the end of the rotating rod.

[0025] As a preferred solution of the intake valve opening assisting device of the present invention, wherein: a locking groove is provided outside the T-shaped rod;

[0026] The rotating assembly includes an arc-shaped plate arranged at the end of the connecting rod, a second movable groove opened outside the arc-shaped plate, and a hook rod arranged outside the arc-shaped plate;

[0027] Wherein, the arc-shaped plate matches the locking groove.

[0028] The beneficial effects of the intake valve assisting opening device of the present invention are as follows: by connecting the middle parts of a pair of T-shaped rods with the valve stem, the positioning component can be used to control the pair of T-shaped rods from being misaligned during the process, and the trigger component will slide toward the inside of the T-shaped rods during the process of the pair of T-shaped rods closing, thereby locking the pair of T-shaped rods, and completing the connection between the pair of T-shaped rods and the valve stem. At this time, the trigger component is pushed to resist the valve body device, and the T-shaped rod is lifted under the reaction force to drive the valve stem to open. At the same time, the adapter component can also reduce the friction between the trigger component and the T-shaped rod during the sliding process, and the T-shaped rod is tightly matched with the valve stem, which can also prevent the valve stem from being bent by external force during the valve assisting opening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0030] Figure 1 This is an overall schematic diagram of the intake valve opening assistance device.

[0031] Figure 2 This is a schematic diagram of the T-rod structure of the intake valve assist opening device.

[0032] Figure 3 This is a schematic diagram of the functional component structure of the intake valve auxiliary opening device.

[0033] Figure 4 This is a schematic diagram of the structure of the trigger component and the limiting component of the intake valve auxiliary opening device.

[0034] Figure 5 This is a schematic diagram of the internal structure of the restriction chamber of the intake valve auxiliary opening device.

[0035] Figure 6 This is a schematic diagram of the locking component structure of the intake valve auxiliary opening device. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Example 1, reference Figure 1 , is the first embodiment of the present invention, which provides an intake valve opening assisting device, comprising a main body component 100, including a T-shaped rod 101, a trigger assembly 102 arranged in the T-shaped rod 101, and a limiting assembly 103 arranged outside the trigger assembly 102; a functional component 200, including a positioning assembly 201 arranged outside the trigger assembly 102, and an adapter assembly 202 arranged in the T-shaped rod 101. By connecting the middle parts of a pair of T-shaped rods 101 with the valve stem, the positioning assembly 201 can control the pair of T-shaped rods 101 to prevent misalignment in the process. , and the trigger assembly 102 will slide towards the inside of the T-shaped rod 101 during the closing process of the pair of T-shaped rods 101, and then lock the pair of T-shaped rods 101. At this time, the connection between the pair of T-shaped rods 101 and the valve stem is completed. At this time, the trigger assembly 102 is pushed to resist the valve body device, and the T-shaped rod 101 is lifted under the reaction force to drive the valve stem to open. At the same time, during the sliding process, the adapter assembly 202 can also reduce the friction between the trigger assembly 102 and the T-shaped rod 101, and the T-shaped rod 101 is closely matched with the valve stem, which can also prevent the valve stem from being bent by external force during the valve opening assistance process.

[0040] Example 2, reference Figure 1 to Figure 4, which is the second embodiment of the present invention. Different from the previous embodiment, an arc groove 101a is provided outside the T-shaped rod 101, and a limiting cavity 101b is provided outside the T-shaped rod 101; the trigger assembly 102 includes a concave rod 102a arranged in the limiting cavity 101b, a slide groove 102b provided outside the concave rod 102a, and a trigger rod 102c provided at the end of the concave rod 102a. The arc groove 101a is provided in the middle of one side close to the pair of T-shaped rods 101, and a non-metallic coating is provided in the arc groove 101a to prevent the valve stem from directly contacting the T-shaped rod 101, which has a certain protective effect on the valve stem. The pair of T-shaped rods 101 have arc grooves 101a provided at diagonal positions. The limiting cavity 101b has a concave rod 102a disposed therein, the concave rod 102a being arranged in a "7" shape, and a sliding groove 102b being provided on the inner side of the short rod thereof, and a trigger rod 102c being fixedly connected to the middle part of the long rod of the concave rod 102a, by aligning the inner wall of the arc-shaped groove 101a of a pair of T-shaped rods 101 with the position of the valve stem, so that in the process of relative movement of the pair of T-shaped rods 101, the outer wall of the T-shaped rod 101 will contact the trigger rod 102c, so that the concave rod 102a slides into the limiting cavity 101b, and at the same time, it will drive the locking device to move into the arc-shaped groove 101a, and realize the locking between the pair of T-shaped rods 101.

[0041] Furthermore, the T-shaped rod 101 is provided with an L-shaped limiting groove 101c in the limiting cavity 101b; the limiting assembly 103 includes a slider 103a provided in the L-shaped limiting groove 101c, and a stop plate 103b provided at the end of the concave rod 102a; wherein the slider 103a is connected to the concave rod 102a, the T-shaped rod 101 is provided with an L-shaped limiting groove 101c in the limiting cavity 101b, the L-shaped limiting groove 101c is composed of a vertical groove B1 and a horizontal groove Q2, the slider 103a is slidably connected in the L-shaped limiting groove 101c, the slider 103a is connected to the concave rod 102a, and the concave rod 102a is connected to the concave rod 102a. A stop plate 103b is provided at the end of a, so that when the trigger rod 102c contacts the T-shaped rod 101, the concave rod 102a will first slide along the track of the vertical groove B1 driven by the slider 103a, and then when the valve stem is opened, the concave rod 102a will slide along the track of the horizontal groove. At the same time, after a pair of T-shaped rods 101 are locked, the setting of the stop plate 103b will also increase the contact area between the concave rod 102a and the valve body device. At this time, the concave rod 102a is pushed to slide in the direction of the valve body device, and the stop plate 103b will contact the valve body device, and at the same time, the T-shaped rod 101 is lifted under the reaction force and the valve stem is driven to open.

[0042] Furthermore, a positioning groove 101d is provided on the outside of the T-shaped rod 101; the positioning assembly 201 includes a positioning rod 201a provided on the outside of the T-shaped rod 101, and a gripping rod 201b provided on the end of the concave rod 102a; wherein, the positioning rod 201a matches the positioning groove 101d, and a pair of T-shaped rods 101 are provided with diagonally arranged positioning grooves 101d, and a pair of T-shaped rods 101 are provided with positioning rods 201a at positions corresponding to the positioning grooves 101d, and the ends of the concave rods 102a are fixedly connected with the gripping rod 201b, and the gripping rod 201b is arranged in an inclined shape. After the pair of T-shaped rods 101 are merged, the ends of the pair of gripping rods 201b will contact each other, which can facilitate the sliding of the concave rod 102a in the limiting cavity 101b. At the same time, the setting of the positioning rod 201a can prevent dislocation during the merging process of the pair of T-shaped rods 101, thereby preventing damage to the valve stem.

[0043] Furthermore, a rolling groove 101e is provided on the outside of the T-shaped rod 101; the adapter assembly 202 includes a support rod 202a arranged in the rolling groove 101e, and a roller 202b arranged outside the support rod 202a. The T-shaped rod 101 is provided with a rolling groove 101e at a position corresponding to the trigger rod 102c, and the rolling groove 101e is provided with multiple support rods 202a, and the outer sides of the support rods 202a are rotatably connected to the rollers 202b. In this way, in the process of pushing the concave rod 102a to move, the support rod 202a and the roller 202b will reduce the friction between the trigger rod 102c and the T-shaped rod 101, so that the opening of the valve stem can be completed more labor-saving.

[0044] The rest of the structure is the same as that of Example 1.

[0045] Example 3, reference Figure 1 to Figure 6 , which is the third embodiment of the present invention. Different from the previous embodiment, the above-mentioned locking device refers to this locking component 300, and also includes a locking component 300; it includes a supporting component 301 arranged in the trigger component 102, an output component 302 arranged in the supporting component 301, a connecting component 303 arranged in the supporting component 301, and a rotating component 304 arranged at the end of the connecting component 303. In the process of the above-mentioned trigger component 102 sliding into the limiting cavity 101b, the supporting component 301 will be driven to move synchronously, and the output component 302 will swing in the limiting cavity 101b, and its side will resist the rotating component 304, so that the rotating component 304 rotates with the connecting component 303 as the center and is embedded in the T-shaped rod 101, thereby realizing the locking between a pair of T-shaped rods 101.

[0046] Specifically, the T-shaped rod 101 is located in the limiting cavity 101b and has an output groove 101f; the support assembly 301 includes an L-shaped rod 301a disposed in the slide groove 102b, a movable groove 301b disposed outside the L-shaped rod 301a, and a spring 301c disposed in the output groove 101f. The T-shaped rod 101 is located in the limiting cavity 101b and has an output groove 101f. The output groove 101f is slidably connected by the L-shaped rod 301a. A spring 301c is disposed between the L-shaped rod 301a and the output groove 101f. A movable groove 301b is disposed on the outer side of the L-shaped rod 301a. At the same time, the L-shaped rod 301a has a movable groove 301b, which is slidably connected to the slide groove 102b of the concave rod 102a. In this way, when the concave rod 102a slides inward, the L-shaped rod 301a can slide into the limiting chamber 101b synchronously, and at the same time squeeze the spring 301c. The slide groove 102b opened at the position of the concave rod 102a corresponding to the L-shaped rod 301a ensures that the concave rod 102a will not be constrained by the L-shaped rod 301a during the lateral sliding of the concave rod 102a. At the same time, the L-shaped rod 301a supports the output component 302 and the connecting component 303.

[0047] Further, the T-shaped rod 101 is located in the limiting cavity 101b and is provided with a guide groove 101g; the output assembly 302 includes a support rod 302a provided in the movable groove 101b, an output rod 302b provided outside the support rod 302a, and a guide rod 302c provided at the end of the output rod 302b, the T-shaped rod 101 is located in the limiting cavity 101b and is provided with a guide groove 101g, the guide groove 101g is composed of an oblique groove 1 Q1, a transverse groove 2 B2, an oblique groove 2 Q3 and a connecting groove Q4, the movable groove 1 301b is rotatably connected with the support rod 302a, the support rod 302a is fixedly connected with the output rod 302b outside, the end of the output rod 302b is fixedly connected with the guide rod 302c, the guide rod 302c is movably connected in the guide groove 101g, and in the above-mentioned concave rod 1 During the process of the L-shaped rod 301a driving the L-shaped rod 301a to slide into the limiting cavity 101b, the L-shaped rod 301a will drive the output assembly 302 to move in the guide groove 101g. During the movement of the output assembly 302, the guide rod 302c will preferentially enter the transverse groove B2 along the inclined groove Q1. Since the L-shaped rod 301a squeezes the spring 301c, the spring 301c is deformed, and at the same time, an outward force is applied to the L-shaped rod 301a, so that the guide rod 302c is hooked in the transverse groove B2. During the movement of the guide rod 302c along the inclined groove Q1, it will rotate with the connecting assembly 303 as the center, and at the same time drive the rotating assembly 304 to embed into the pair of T-shaped rods 101, thereby realizing the locking between the pair of T-shaped rods 101.

[0048] When unlocking is required, the L-shaped rod 301a is pushed to slide into the limiting chamber 101b. At this time, the guide rod 302c will enter the second inclined groove Q3 and when the guide rod 302c moves to its end, the squeezed spring 301c will push the L-shaped rod 301a to reset, and the guide rod 302c will also move along the connecting groove Q4 into the first inclined groove Q1.

[0049] Further, the connecting component 303 includes a rotating rod 303a arranged in the movable groove 1 301b, and a connecting rod 303b arranged at the end of the rotating rod 303a, and a locking groove 101h is opened outside the T-shaped rod 101; the rotating component 304 includes an arc plate 304a arranged at the end of the connecting rod 303b, an movable groove 2 304b opened outside the arc plate 304a, and a hook rod 304c arranged outside the arc plate 304a; wherein the arc plate 304a matches the locking groove 101h, the L-shaped rod 301a is located in the movable groove 1 301b and is rotatably connected to the rotating rod 303a, the rotating rod 303a is fixedly connected to the connecting rod 303b, the end of the connecting rod 303b is fixedly connected to the arc plate 304a, and the arc plate 304a is opened outside the movable groove 2 304b, The output rod 302b is fixedly connected with a hook rod 304c outside, and the hook rod 304c passes through the movable groove 304b, so that when the guide rod 302c moves in the guide groove 101g, the output rod 302b will deflect with the support rod 302a as the center, and in the deflection process, the side of the output rod 302b will contact the arc plate 304a to rotate with the rotating rod 303a as the center, and the end of the arc plate 304a will be embedded in the locking groove 101h. At the same time, a through notch is also opened on the outside of the locking groove, so that when the L-shaped rod 301a moves to drive the rotating rod 303a and the arc plate 304a to move into the limiting chamber 101b, there is still a travel margin between the arc plate 304a and the locking groove 101h, so as to achieve the locking between a pair of T-shaped rods 101;

[0050] When the guide rod 302c enters the second inclined groove Q3, the output rod 302b will deflect in the opposite direction of the first inclined groove Q1, and at the same time, the inner wall of the hook rod 304c arranged on the outside of the output rod 302b will contact the inner wall of the second movable groove 304b of the arc plate 304a, so that the arc plate 304a moves out of the locking groove 101h, thereby releasing the lock between a pair of T-shaped rods 101.

[0051] The rest of the structure is the same as that of Example 2.

[0052] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0053] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0054] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0055] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An intake valve opening assisting device, characterized in that: include, A main body component (100) comprises a T-shaped rod (101), a trigger component (102) arranged inside the T-shaped rod (101), and a limiting component (103) arranged outside the trigger component (102); The functional component (200) comprises a positioning component (201) arranged outside the trigger component (102), and an adapting component (202) arranged inside the T-shaped rod (101).

2. The intake valve opening assisting device according to claim 1, characterized in that: An arc-shaped groove (101a) is formed outside the T-shaped rod (101), and a limiting cavity (101b) is formed outside the T-shaped rod (101); The trigger assembly (102) comprises a concave rod (102a) arranged in the limiting cavity (101b), a sliding groove (102b) opened outside the concave rod (102a), and a trigger rod (102c) arranged at the end of the concave rod (102a).

3. The intake valve opening assisting device according to claim 2, characterized in that: The T-shaped rod (101) is located in the limiting cavity (101b) and is provided with an L-shaped limiting groove (101c); The limiting assembly (103) comprises a sliding block (103a) arranged in the L-shaped limiting groove (101c), and a stop plate (103b) arranged at the end of the concave rod (102a); Wherein, the sliding block (103a) is connected to the concave rod (102a).

4. The intake valve opening assisting device according to claim 3, characterized in that: The T-shaped rod (101) is provided with a positioning groove (101d) on the outside; The positioning assembly (201) comprises a positioning rod (201a) arranged outside the T-shaped rod (101), and a gripping rod (201b) arranged at the end of the concave rod (102a); Wherein, the positioning rod (201a) matches the positioning groove (101d).

5. The intake valve opening assisting device according to claim 4, characterized in that: The T-shaped rod (101) is provided with a rolling groove (101e) outside; The adapter component (202) comprises a support rod (202a) disposed in the rolling groove (101e), and a roller (202b) disposed outside the support rod (202a).

6. The intake valve opening assisting device according to claim 4 or 5, characterized in that: Also includes a locking component (300); It comprises a supporting component (301) arranged in the triggering component (102), an output component (302) arranged in the supporting component (301), a connecting component (303) arranged in the supporting component (301), and a rotating component (304) arranged at the end of the connecting component (303).

7. The intake valve opening assisting device according to claim 6, characterized in that: The T-shaped rod (101) is located in the limiting cavity (101b) and is provided with an output groove (101f); The support assembly (301) comprises an L-shaped rod (301a) arranged in the sliding groove (102b), a movable groove (301b) opened outside the L-shaped rod (301a), and a spring (301c) arranged in the output groove (101f).

8. The intake valve opening assisting device according to claim 7, characterized in that: The T-shaped rod (101) is located in the limiting cavity (101b) and is provided with a guide groove (101g); The output assembly (302) comprises a support rod (302a) disposed in the movable groove 1 (301b), an output rod (302b) disposed outside the support rod (302a), and a guide rod (302c) disposed at the end of the output rod (302b).

9. The intake valve opening assisting device according to claim 8, characterized in that: The connecting assembly (303) comprises a rotating rod (303a) arranged in the movable groove 1 (301b), and a connecting rod (303b) arranged at the end of the rotating rod (303a).

10. The intake valve opening assisting device according to claim 9, characterized in that: The T-shaped rod (101) is provided with a locking groove (101h) outside; The rotating assembly (304) comprises an arc-shaped plate (304a) arranged at the end of the connecting rod (303b), a second movable groove (304b) opened outside the arc-shaped plate (304a), and a hook rod (304c) arranged outside the arc-shaped plate (304a); Wherein, the arc-shaped plate (304a) matches the locking groove (101h).

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