An assist device for a non-return valve at the outlet of a blower.

Abstract

This invention relates to the technical field of check valves, and more particularly to an assistive device for a check valve at a fan outlet. The device comprises a first opening assembly including a receiving member, a first connecting member, and a first actuating member, the first actuating member being disposed on the first connecting member; a support assembly including a first bearing member and a first fixing member, the first fixing member being disposed on the first bearing member; and a second opening assembly including a second connecting member, a second actuating member, a second bearing member, and a second fixing member, the second connecting member and the second bearing member being disposed on the receiving member, and the second actuating member being disposed on the second connecting member. Through the mutual cooperation between the first opening assembly, the support assembly, and the second opening assembly, space is saved for installing high-power actuators. Simultaneous operation of multiple actuators further facilitates the opening of the check valve, effectively reducing the oil injection time and oil consumption during fan operation, and reducing unsafe events caused by load increases or decreases.

Description

Technical Field

[0001] This invention relates to the technical field of non-return valves, and more particularly to an assist device for a non-return valve at the outlet of a blower. Background Technology

[0002] The induced draft fan outlet check valve is mainly driven by a central shaft. The cylinder drives the central shaft to rotate, thereby opening and closing the check valve. During the opening and closing process, the check valve not only bears the resistance of the flue system, but also its own weight when installed in a vertical flue position. However, the design is based on horizontal installation. During unit operation, the vertically installed check valve cannot open normally, which requires reducing the unit load (reducing the resistance at the baffle outlet). This increases the risk of unsafe events during load lifting and lowering operations. At the same time, when the fan is connected in parallel, fuel consumption and fuel injection time are increased in order to stabilize combustion. In addition, the space is limited when the actuator is installed on the flue, and there is not enough space to install a high-power pneumatic actuator.

[0003] Without modifications, when a wind turbine fails and is restarted, the flue gas volume in the flue needs to be reduced, the load needs to be reduced to about 10%, fuel oil needs to be used for stable combustion, and the unit load (power generation) needs to be reduced, thus reducing the economic efficiency of operation. Summary of the Invention

[0004] In view of the above-mentioned problems that existing methods of using a fan in parallel increase fuel consumption and fuel injection time in order to stabilize combustion, and that the actuator is installed on the flue, which restricts space and makes it difficult to install a high-power pneumatic actuator, this invention is proposed.

[0005] Therefore, the purpose of this invention is to provide an assist device for a non-return valve at the outlet of a blower.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an assist device for a non-return valve at the outlet of a blower, comprising,

[0007] The first opening component includes a receiving member, a first connecting member, and a first activating member, wherein the first connecting member is disposed on the receiving member and the first activating member is disposed on the first connecting member;

[0008] A support assembly includes a first carrier member and a first fixing member, the first carrier member being disposed on the receiving member, and the first fixing member being disposed on the first carrier member; and,

[0009] The second opening component includes a second connector, a second activator, a second carrier, and a second fixing member. The second connector is disposed on the receiving member, the second activator is disposed on the second connector, the second carrier is disposed on the receiving member, and the second fixing member is disposed on the second carrier.

[0010] As a preferred embodiment of the auxiliary device on the anti-reverse valve at the outlet of the fan of the present invention, the receiving member includes a first door body and a second door body, both of which are semi-circular structures and are symmetrically arranged.

[0011] As a preferred embodiment of the assist device on the anti-reverse valve at the outlet of the fan of the present invention, the first connecting member includes a first central shaft and a first connecting rod. There are two first central shafts, which are fixedly connected to one side of the first door body and the second door body, respectively. There are two first connecting rods, which are movably connected to each of the first central shafts.

[0012] As a preferred embodiment of the assist device on the anti-reverse valve at the outlet of the fan of the present invention, the first actuating element includes a first left-side pneumatic actuator and a first right-side pneumatic actuator, the first left-side pneumatic actuator is fixedly connected to one of the first connecting rods, and the first right-side pneumatic actuator is fixedly connected to the other first connecting rod.

[0013] As a preferred embodiment of the assist device on the anti-reverse valve at the outlet of the fan of the present invention, the first bearing member includes a first support rod fixedly connected to the first door body and the second door body, wherein a second support rod is provided at a symmetrical position of the first support rod, the second support rod is fixedly connected to the other side of the first door body and the second door body, and a first bearing plate is fixedly connected to the first support rod and the second support rod, and there are two of the first support rod, the second support rod and the first bearing plate.

[0014] As a preferred embodiment of the assist device on the anti-reverse valve at the outlet of the fan of the present invention, the first fixing member includes a first left fixing block and a first right fixing block. The first left fixing block is fixedly connected to one of the first bearing plates, the first right fixing block is fixedly connected to the other first bearing plate, and a first left pneumatic actuator is fixedly connected to one side of the first left fixing block and a first right pneumatic actuator is fixedly connected to one side of the first right fixing block.

[0015] As a preferred embodiment of the assist device on the anti-reverse valve at the outlet of the fan of the present invention, the second connecting member includes a second central shaft and a second connecting rod. There are two second central shafts, which are respectively fixedly connected to the other side of the first door body and the second door body. There are two second connecting rods, which are respectively movably connected to the second central shaft.

[0016] As a preferred embodiment of the assist device on the anti-reverse valve at the outlet of the fan of the present invention, the second actuating element includes a second left pneumatic actuator and a second right pneumatic actuator, the second left pneumatic actuator is fixedly connected to one of the second connecting rods, and the second right pneumatic actuator is fixedly connected to the other second connecting rod.

[0017] As a preferred embodiment of the assist device on the anti-reverse valve at the outlet of the fan of the present invention, the second bearing member includes a third support rod fixedly connected to the first door body and the second door body, wherein a fourth support rod is provided at a symmetrical position of the third support rod, the fourth support rod is fixedly connected to the other side of the first door body and the second door body, and a second bearing plate is fixedly connected to the third support rod and the fourth support rod, and there are two of the third support rod, the fourth support rod and the second bearing plate.

[0018] As a preferred embodiment of the assist device on the anti-reverse valve at the outlet of the fan of the present invention, the second fixing member includes a second left fixing block and a second right fixing block. The second left fixing block is fixedly connected to one of the second bearing plates, and the second right fixing block is fixedly connected to the other second bearing plate. A second left pneumatic actuator is also fixedly connected to one side of the second left fixing block, and a second right pneumatic actuator is fixedly connected to one side of the second right fixing block.

[0019] The beneficial effects of the present invention are as follows: the cooperation between the first opening component, the support component and the second opening component saves the space occupied by the installation of high-power actuators, and facilitates maintenance, lifting and installation; the simultaneous operation of multiple actuators makes the shaft bear force evenly, and doubles the torque transmitted to the shaft, which is more conducive to the opening of the check valve. It can effectively reduce the oil injection time and oil consumption when the fan is connected, and reduce the unsafe events of the unit caused during the lifting and lowering of the load. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used 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 those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of an auxiliary device for a fan outlet check valve according to the present invention. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an 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 phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Example 1

[0027] Reference Figure 1 The first embodiment of the present invention provides an assist device for a non-return valve at the outlet of a fan. This device includes a first opening component 100, which includes a receiving member 101, a first connecting member 102, and a first activating member 103. The first connecting member 102 is disposed on the receiving member 101, and the first activating member 103 is disposed on the first connecting member 102.

[0028] Specifically, the accommodating member 101 includes a first door body 101a and a second door body 101b, both of which are semi-circular structures and are symmetrically arranged.

[0029] Furthermore, the first connector 102 includes a first central shaft 102a and a first connecting rod 102b. There are two first central shafts 102a, which are fixedly connected to one side of the first door body 101a and the second door body 101b, respectively. There are two first connecting rods 102b, which are movably connected to each of the first central shafts 102a.

[0030] Furthermore, the first actuating component 103 includes a first left-side pneumatic actuator 103a and a first right-side pneumatic actuator 103b. The first left-side pneumatic actuator 103a is fixedly connected to one of the first connecting rods 102b, and the first right-side pneumatic actuator 103b is fixedly connected to the other first connecting rod 102b.

[0031] During operation, firstly, the first left-side pneumatic actuator 103a and the first right-side pneumatic actuator 103b are activated. These two actuators are respectively fixed to two first connecting rods 102b. With the activation of the pneumatic actuators, they drive the first connecting rods 102b to move. Since the first connecting rods 102b are movably connected to the first central shaft 102a, the movement of the connecting rods will cause the first central shaft 102a to rotate. The rotation of the first central shaft 102a will cause the first door body 101a and the second door body 101b (two semi-circular door bodies) to rotate around the central shaft. When the two door bodies rotate to a certain angle, they will form a channel, realizing the open state; conversely, when the door bodies rotate back to the initial position, the channel is closed. Once the door bodies reach the required open or closed position, the pneumatic actuators stop working to maintain the current state of the door bodies. This process can be realized through an automated control system, making the operation more convenient and precise.

[0032] Example 2

[0033] Reference Figure 1 The first embodiment of the present invention provides an assist device for a fan outlet check valve. This device includes a support assembly 200, including a first support member 201 and a first fixing member 202. The first support member 201 is disposed on the receiving member 101, and the first fixing member 202 is disposed on the first support member 201.

[0034] Specifically, the first support member 201 includes a first support rod 201a fixedly connected to the first door body 101a and the second door body 101b, wherein a second support rod 201b is provided at a symmetrical position to the first support rod 201a, and the second support rod 201b is fixedly connected to the other side of the first door body 101a and the second door body 101b. A first support plate 201c is fixedly connected to the first support rod 201a and the second support rod 201b. There are two types of first support rods 201a, second support rods 201b and first support plates 201c.

[0035] Furthermore, the first fixing member 202 includes a first left fixing block 202a and a first right fixing block 202b. The first left fixing block 202a is fixedly connected to one of the first bearing plates 201c, and the first right fixing block 202b is fixedly connected to the other first bearing plate 201c. The first left fixing block 202a is also fixedly connected to a first left pneumatic actuator 103a on one side, and the first right fixing block 202b is fixedly connected to a first right pneumatic actuator 103b on one side.

[0036] During operation, the first support rod 201a and the second support rod 201b, together with the first bearing plate 201c, allow the first left-side fixing block 202a and the first right-side fixing block 202b to be installed and fixed on it. This also allows the first left-side pneumatic actuator 103a and the first right-side pneumatic actuator to be fixed on the first left-side fixing block 202a and the first right-side fixing block 202b, thus assisting the normal operation of the entire device.

[0037] Example 3

[0038] Reference Figure 1 The first embodiment of the present invention provides an assist device for a non-return valve at the outlet of a fan. This device includes a second opening component 300, which includes a second connecting member 301, a second starting member 302, a second supporting member 303, and a second fixing member 304. The second connecting member 301 is disposed on the receiving member 101, the second starting member 302 is disposed on the second connecting member 301, the second supporting member 303 is disposed on the receiving member 101, and the second fixing member 304 is disposed on the second supporting member 303.

[0039] Specifically, the second connecting member 301 includes a second central shaft 301a and a second connecting rod 301b. There are two second central shafts 301a, which are fixedly connected to the other side of the first door body 101a and the second door body 101b respectively. There are two second connecting rods 301b, which are movably connected to the second central shaft 301a respectively.

[0040] Furthermore, the second actuating component 302 includes a second left pneumatic actuator 302a and a second right pneumatic actuator 302b. The second left pneumatic actuator 302a is fixedly connected to one of the second connecting rods 301b, and the second right pneumatic actuator 302b is fixedly connected to the other second connecting rod 301b.

[0041] Furthermore, the second support member 303 includes a third support rod 303a fixedly connected to the first door body 101a and the second door body 101b, wherein a fourth support rod 303b is provided at a symmetrical position to the third support rod 303a, and the fourth support rod 303b is fixedly connected to the other side of the first door body 101a and the second door body 101b. A second support plate 303c is fixedly connected to the third support rod 303a and the fourth support rod 303b. There are two third support rods 303a, fourth support rods 303b and second support plates 303c.

[0042] Furthermore, the second fixing member 304 includes a second left fixing block 304a and a second right fixing block 304b. The second left fixing block 304a is fixedly connected to one of the second bearing plates 303c, and the second right fixing block 304b is fixedly connected to the other second bearing plate 303c. A second left pneumatic actuator 302a is also fixedly connected to one side of the second left fixing block 304a, and a second right pneumatic actuator 302b is fixedly connected to one side of the second right fixing block 304b.

[0043] During operation, the second left pneumatic actuator 302a and the second right pneumatic actuator 302b, which are respectively fixed to the second left fixed block 304a and the second right fixed block 304b, drive their respective connected second connecting rods 301b to move. Since the second connecting rods 301b are movably connected to the second central shaft 301a, the movement of the connecting rods will cause the second central shaft 301a to rotate. The rotation of the second central shaft 301a will cause the first door body 101a and the second door body 101b to rotate around the second central shaft 301a. When the two door bodies rotate to a certain angle, they will form a... The door opens when the door rotates back to its initial position. Conversely, when the door rotates back to its initial position, the door closes. At the same time, the second left fixed block 304a and the second right fixed block 304b move along the third support rod 303a and the fourth support rod 303b, respectively, because they are fixedly connected to the second bearing plate 303c. The second left pneumatic actuator 302a and the second right pneumatic actuator 302b not only drive the linkage to move, but also assist the normal operation of the entire device, ensuring the smooth opening and closing of the door. When the door moves to the desired position (fully open or fully closed), the pneumatic actuator stops working to maintain the current state of the door. After the door is fully open or closed, it ensures that it remains stable in the desired position.

[0044] Because the actuators require support, this design saves space for installing high-power actuators and facilitates maintenance, lifting, and installation. The simultaneous operation of the two actuators ensures even force distribution on the shaft and doubles the torque transmitted to the shaft, which further facilitates the opening of the check valve. This device can start under loads of over 50% without the need for fuel stabilization, greatly improving the unit's operating economy and equipment safety.

[0045] Importantly, it should be noted that the constructions and arrangements of this application shown in several different exemplary embodiments are merely exemplary. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., variations in the size, scale, structure, shape, and proportion of various elements, as well as parameter values, installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or apparatus steps may be changed or rearranged according to alternative embodiments. In the claims, any "apparatus plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, changes, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0046] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An assist device for a non-return valve at the outlet of a blower, characterized in that: include, The first opening component (100) includes a receiving member (101), a first connecting member (102) and a first activating member (103), wherein the first connecting member (102) is disposed on the receiving member (101) and the first activating member (103) is disposed on the first connecting member (102); The support assembly (200) includes a first carrier (201) and a first fixing member (202), the first carrier (201) being disposed on the receiving member (101), and the first fixing member (202) being disposed on the first carrier (201); and, The second opening component (300) includes a second connector (301), a second actuating component (302), a second supporting component (303), and a second fixing component (304). The second connector (301) is disposed on the receiving component (101), the second actuating component (302) is disposed on the second connector (301), the second supporting component (303) is disposed on the receiving component (101), and the second fixing component (304) is disposed on the second supporting component (303). The accommodating member (101) includes a first door (101a) and a second door (101b), both of which are semi-circular structures and are symmetrically arranged. The first connector (102) includes a first central shaft (102a) and a first connecting rod (102b). There are two first central shafts (102a), which are fixedly connected to one side of the first door body (101a) and the second door body (101b), respectively. There are two first connecting rods (102b), which are movably connected to each of the first central shafts (102a). The first actuating component (103) includes a first left pneumatic actuator (103a) and a first right pneumatic actuator (103b). The first left pneumatic actuator (103a) is fixedly connected to one of the first connecting rods (102b), and the first right pneumatic actuator (103b) is fixedly connected to the other first connecting rod (102b).

2. The assist device on the non-return valve at the fan outlet according to claim 1, characterized in that: The first support member (201) includes a first support rod (201a) fixedly connected to the first door body (101a) and the second door body (101b), wherein a second support rod (201b) is provided at a symmetrical position of the first support rod (201a), the second support rod (201b) is fixedly connected to the other side of the first door body (101a) and the second door body (101b), and a first support plate (201c) fixedly connected to the first support rod (201a) and the second support rod (201b). There are two of the first support rod (201a), the second support rod (201b) and the first support plate (201c).

3. The assist device on the non-return valve at the fan outlet according to claim 2, characterized in that: The first fixing member (202) includes a first left fixing block (202a) and a first right fixing block (202b). The first left fixing block (202a) is fixedly connected to one of the first bearing plates (201c), and the first right fixing block (202b) is fixedly connected to the other first bearing plate (201c). A first left pneumatic actuator (103a) is also fixedly connected to one side of the first left fixing block (202a), and a first right pneumatic actuator (103b) is fixedly connected to one side of the first right fixing block (202b).

4. The assist device on the non-return valve at the fan outlet according to claim 3, characterized in that: The second connector (301) includes a second central shaft (301a) and a second connecting rod (301b). There are two second central shafts (301a), which are fixedly connected to the other side of the first door body (101a) and the second door body (101b), respectively. There are two second connecting rods (301b), which are movably connected to the second central shaft (301a).

5. The assist device on the non-return valve at the fan outlet according to claim 4, characterized in that: The second actuating component (302) includes a second left pneumatic actuator (302a) and a second right pneumatic actuator (302b). The second left pneumatic actuator (302a) is fixedly connected to one of the second links (301b), and the second right pneumatic actuator (302b) is fixedly connected to the other second link (301b).

6. The assist device on the non-return valve at the fan outlet according to claim 5, characterized in that: The second support member (303) includes a third support rod (303a) fixedly connected to the first door body (101a) and the second door body (101b), wherein a fourth support rod (303b) is provided at a symmetrical position of the third support rod (303a), the fourth support rod (303b) is fixedly connected to the other side of the first door body (101a) and the second door body (101b), and a second support plate (303c) is fixedly connected to the third support rod (303a) and the fourth support rod (303b). There are two of the third support rod (303a), the fourth support rod (303b) and the second support plate (303c).

7. The assist device on the non-return valve at the fan outlet according to claim 6, characterized in that: The second fixing member (304) includes a second left fixing block (304a) and a second right fixing block (304b). The second left fixing block (304a) is fixedly connected to one of the second bearing plates (303c), and the second right fixing block (304b) is fixedly connected to the other second bearing plate (303c). A second left pneumatic actuator (302a) is also fixedly connected to one side of the second left fixing block (304a), and a second right pneumatic actuator (302b) is fixedly connected to one side of the second right fixing block (304b).

Images