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CN-224229262-U - Damping butterfly valve

CN224229262UCN 224229262 UCN224229262 UCN 224229262UCN-224229262-U

Abstract

The utility model provides a damping butterfly valve, which aims at the problem that vibration generated when an actuating mechanism on the butterfly valve works is large in the prior art, and comprises a valve body with an annular radial section, a disc plate positioned in a flow channel of the valve body and a valve rod used for driving the disc plate to rotate to open or close the flow channel under the driving of the actuating mechanism.

Inventors

  • LI JIFENG
  • SUN ZONGXU
  • JIANG SHIJIN
  • YUAN YE
  • LU WEIDONG
  • Zhou Haojian
  • SHI JIANXIN

Assignees

  • 中广核工程有限公司
  • 悠尼酷(上海)流体控制有限公司

Dates

Publication Date
20260512
Application Date
20250512
Priority Date
20250306

Claims (10)

  1. 1. The utility model provides a shock attenuation butterfly valve, includes radial cross-section is annular valve body, is located the dish board in the runner of valve body and be used for driving under actuating mechanism's drive the dish board rotates in order to open or close the valve rod of runner, have upper and lower relative pore and down on the valve body, upper pore forms on the pedestal, be connected with on the pedestal and be used for fixing actuating mechanism's support frame, the lower extreme of valve rod passes in proper order upper pore and dish board extremely down the pore, valve rod and dish board are fixed through the connecting pin that passes both, its characterized in that, narrow lower width on the support frame.
  2. 2. The butterfly valve of claim 1, wherein the centerline of the connecting pin is offset from the centerline of the valve stem.
  3. 3. The butterfly valve of claim 2, wherein the connecting pin passes vertically through the plate and the valve stem.
  4. 4. The butterfly valve of claim 2, wherein the centerline of the connecting pin is tangential to the valve stem.
  5. 5. The butterfly valve according to any one of claims 2 to 4, wherein the back surface of the plate is formed with a tube penetrated by the valve stem in the up-down direction, the tube and the valve stem are fixed by the connecting pin penetrating both, and the tube passes through the center of the back surface of the plate.
  6. 6. The butterfly valve according to claim 1, wherein the cross section of the support frame in the radial direction of the valve body is in a trapezoid shape with a narrow upper part and a wide lower part, and is formed by bending a horizontal steel plate in the left-right direction of the valve body.
  7. 7. The shock absorbing butterfly valve according to claim 1, wherein the upper duct has a step therein, so that the upper duct is divided into an upper section and a lower section, the upper section is wider than the lower section, a packing is provided between the upper section and the valve stem, the packing is pressed on the step by a packing cover, the packing cover is penetrated by the valve stem and is fixed with the valve body by a fixing bolt, the packing comprises an upper packing structure and a lower packing structure, each of the upper packing structure and the lower packing structure comprises a head packing element, a plurality of middle packing elements and a tail packing element, the head packing element, the middle packing element and the tail packing element are all annular, the rear end surface of the head packing element is planar, the front end surface forms a circle of protruding part with triangular axial section, the rear end surface of the middle packing element forms a circle of protruding part with triangular axial section, the front end surface is planar, the head packing element, the middle packing element and the tail packing element are sequentially arranged from the upper end surface to the lower end surface of the upper packing element, the tail packing element and the lower packing element are sequentially arranged from the front end surface to the front end surface of the lower packing element, and the front end surface of the upper packing element and the lower packing element are sequentially arranged from the front end surface to the protruding element.
  8. 8. The butterfly valve of claim 7, wherein a resilient spacer is disposed between the packing cover and the nut of the anchor bolt.
  9. 9. The damper butterfly valve of claim 1, further comprising a valve seat for forming a sealing surface with the disk plate and an insert for pressing against the valve seat, the radial cross section of the insert being annular and being fixed within the front flow passage opening of the valve body, the outer diameter of the insert being adapted to the inner diameter of the front flow passage opening, a sealing ring being provided between the insert and the inner wall of the flow passage of the valve body.
  10. 10. The butterfly valve of claim 1 wherein the lower bore is a blind bore.

Description

Damping butterfly valve Technical Field The utility model belongs to the technical field of valves, and particularly relates to a damping butterfly valve. Background Butterfly valves are a commonly used type of valve, mainly for opening and closing or regulating the flow of a medium in a pipeline. In the prior art, the butterfly valve comprises a valve body, a disc plate positioned in a runner of the valve body and a valve rod used for driving the disc plate to rotate under the driving of an actuating mechanism so as to open or close the runner, a seat body is arranged on the valve body, a supporting frame used for fixing the actuating mechanism is connected on the seat body, and the supporting frame is designed to be wide in upper part and narrow in lower part due to the fact that the top surface of the seat body is smaller, so that the top surface of the seat body is adapted, and vibration generated during the working of the actuating mechanism is larger. Disclosure of utility model In view of the above, the present invention provides a damper butterfly valve. The technical scheme adopted by the utility model is as follows: The utility model provides a shock attenuation butterfly valve, includes radial cross-section is annular valve body, is located the dish board in the runner of valve body and be used for driving under actuating mechanism's drive the dish board rotates in order to open or close the valve rod of runner, have upper and lower relative pore and down on the valve body, upper pore forms on the pedestal, be connected with on the pedestal and be used for fixing actuating mechanism's support frame, the lower extreme of valve rod passes in proper order upper pore and dish board extremely down the pore, valve rod and dish board are fixed through the connecting pin that passes both, its characterized in that, narrow lower width on the support frame. According to the utility model, the supporting frame with the narrow upper part and the wide lower part is designed on the valve body so as to fix the executing mechanism, improve the shock resistance and better meet the safety requirement of a nuclear power scene. Drawings The utility model is described in detail below with reference to the attached drawings and detailed description: FIG. 1 is an axial cross-sectional view of a shock absorbing butterfly valve provided by an embodiment of the utility model; FIG. 2 is a right side view of the schematic diagram of FIG. 1; FIG. 3 is a radial cross-sectional view of a valve body according to an embodiment of the present utility model; FIG. 4 is an enlarged view of a portion of FIG. 1 at A; FIG. 5 is a schematic perspective view of a disk plate according to an embodiment of the present utility model; FIG. 6 is a transverse cross-sectional view of the valve stem and the body of the disk of FIG. 1 secured by a connecting pin; Fig. 7 is a partial enlarged view of fig. 1 at B. Detailed Description Embodiments of the present utility model will be described below with reference to the drawings. The embodiments described in the present specification are not intended to be exhaustive or to represent the only embodiments of the present utility model. The following examples are presented for clarity of illustration of the utility model of the present patent and are not intended to limit the embodiments thereof. It will be apparent to those skilled in the art that various changes and modifications can be made in the embodiment described, and that all the obvious changes or modifications which come within the spirit and scope of the utility model are deemed to be within the scope of the utility model. As shown in fig. 1, an embodiment of the present application provides a shock absorbing butterfly valve, comprising a valve body 110, a disk 120, a valve stem 130, a valve seat 140, and an insert 150. The radial section of the valve body 110 is annular, the inside is a flow channel 111, and both the front side and the back side are provided with flanges, and fig. 1 shows the flow direction of the medium in the flow channel 111, wherein the front side refers to the side of the valve body 110 outputting the medium (the right side in fig. 1), and the back side refers to the side of the valve body 110 inputting the medium (the left side in fig. 1). As shown in fig. 3, the valve body 110 has an upper hole 112 and a lower hole 113 opposite to each other, the upper hole 112 is formed on the seat 114 and is penetrated by the valve rod 130, and the lower hole 113 is a blind hole, so that compared with the through hole in the prior art, leakage points can be reduced. As shown in fig. 3, the upper duct 112 has a step therein, so that the upper duct 112 is divided into an upper section 112a and a lower section 112b, the upper section 112a is wider than the lower section 112b, a packing 160 is disposed between the upper section 112a and the valve rod 130, as shown in fig. 1 and 4, the packing 160 is pressed on the step of the upper duc