A fixed cone valve

Abstract

The present application relates to the technical fields of conical valve, and proposes a fixed conical valve, which comprises a valve body, a flow guide cone, a flow guide sheet, a sealing element and a gate cylinder; further comprises a transition cone, one end of the transition cone is fixedly arranged at one end of the flow guide cone close to the water inlet, the outer diameters of the transition cone and the flow guide cone close to the water inlet are smaller than the outer diameters of the transition cone and the flow guide cone away from the water inlet, and the half apex angle of the transition cone is smaller than the half apex angle of the flow guide cone; the gate cylinder is sealingly arranged outside the valve body and is slidingly connected with the valve body and the flow guide sheet respectively. By arranging the transition cone and the spherical plug on the transition cone, the progressive flow guide structure is formed in cooperation with the flow guide cone, the flow channel mutation is eliminated, the flow rate and flow direction of the medium in the valve body are changed smoothly, the flow capacity of the valve is effectively improved, and the vibration and noise are reduced.

Description

Technical Field

[0001] This invention relates to the field of cone valve technology, and more particularly to a fixed cone valve. Background Technology

[0002] Fixed cone valves are commonly used in reservoir ecological water release and gravity water conveyance. Through the guide vanes and guide cones inside the valve, the upstream pressurized water is divided into multiple jet streams, allowing the water flow and air to rub against each other over a large area, thereby producing an atomization effect and achieving energy dissipation of the water flow. The flow area of ​​the medium can be changed by adjusting the relative position between the sleeve gate and the guide cone, thereby achieving the effect of regulating the flow rate.

[0003] The existing utility model with publication number CN205745394U discloses a fixed conical valve with a conical part on the sleeve. The conical part only fits with the sealing element when the valve sleeve is in the second position, so that the valve sleeve seals reliably. When the valve sleeve is open, the sealing element does not fit with the inner wall of the valve sleeve, making the product easy to open, the sealing element not easy to wear, and the sealing effect good.

[0004] In the above technical solution, a guide cone is set in order to disperse and guide the water flow. However, the tip of the guide cone will cause a sudden change in the flow channel, resulting in a vortex zone inside the valve, which leads to a decrease in the valve's flow capacity and an increase in vibration and noise. In addition, the guide cone is fixed in a single-end fixed structure. When the diameter of the fixed cone valve is large and the stroke is long, its rigidity is insufficient, which will also aggravate the vibration of the valve body. Summary of the Invention

[0005] In view of this, the present invention proposes a fixed cone valve that can eliminate abrupt changes in the flow path within the valve, thereby improving the valve's flow capacity and vibration reduction effect.

[0006] The technical solution of this invention is implemented as follows: This invention provides a fixed cone valve, comprising a valve body, a guide cone, a guide plate, a seal, and a gate, wherein,

[0007] One end of the valve body is the water inlet;

[0008] The flow guide cone is located at the end of the valve body away from the water inlet;

[0009] It also includes a transition cone, one end of which is fixedly disposed at the end of the guide cone near the water inlet, and a spherical plug is fixedly disposed at the other end. The outer diameters of the transition cone and the guide cone near the water inlet are both smaller than the outer diameters of the ends away from the water inlet, and the half-apex angle of the transition cone is smaller than the half-apex angle of the guide cone.

[0010] The guide vane is fixedly disposed between the valve body, the guide cone, and the transition cone;

[0011] The sealing element is fixedly mounted on the flow guide cone.

[0012] The gate seal is disposed on the outside of the valve body and is slidably connected to the valve body and the guide vane respectively, so as to selectively abut against the seal.

[0013] Based on the above technical solutions, preferably, the valve body, the guide cone, and the transition cone are arranged coaxially.

[0014] More preferably, one end of the transition cone is located inside the valve body, the half-apex angle of the transition cone is not greater than 30 degrees, and the difference between its half-apex angle and that of the guide cone is not greater than 35 degrees.

[0015] Based on the above technical solutions, preferably, it also includes a fixing cylinder, which comprises an installation section, a guide section, and a flared section, wherein...

[0016] The mounting section is fixedly installed on the outside of the valve body and is spaced apart from the gate cylinder;

[0017] The guide section is fixedly installed at the end of the installation section away from the water inlet. The guide section is a conical tube structure, and its half-apex angle is not less than the half-apex angle of the guide cone.

[0018] The flared section is fixedly installed at the end of the guide section away from the water inlet, and the guide cone is located inside the guide section and the flared section.

[0019] More preferably, it also includes a fixing frame, which comprises a fixing ring, a reinforcing ring, and a connecting rib plate, wherein,

[0020] The reinforcing ring is fitted onto the fixing ring;

[0021] The connecting stiffener is fixedly disposed between the reinforcing ring and the flared section;

[0022] A connecting plate is fixedly installed on the side of the guide cone away from the water inlet, and an installation ring is fixedly installed on the side of the connecting plate away from the guide cone. The fixing ring is detachably fixed on the side of the installation ring away from the water inlet.

[0023] More preferably, the fixing frame further includes a reinforcing rib plate, which is fixedly disposed within the fixing ring.

[0024] More preferably, there are multiple connecting plates, guide vanes, connecting ribs, and reinforcing ribs, and these multiple connecting plates, guide vanes, connecting ribs, and reinforcing ribs are arranged in a circumferential array about the center line of the valve body.

[0025] More preferably, the fixing frame further includes shock-absorbing pads, which are respectively fixedly disposed between the mounting ring and the fixing ring and between the fixing ring and the reinforcing ring.

[0026] Based on the above technical solutions, preferably, the guide cone is provided with a fixing groove;

[0027] The sealing element includes a sealing gasket and a retaining ring, wherein,

[0028] The sealing gasket is fixedly disposed in the fixing groove, and the gate cylinder selectively abuts against the sealing gasket;

[0029] The retaining ring is fixedly mounted on the flow guide cone and abuts against the sealing gasket.

[0030] Based on the above technical solutions, preferably, it also includes a hydraulic cylinder, which is fixedly mounted on the valve body and its telescopic end is fixedly connected to the gate. Two hydraulic cylinders are provided, and the two hydraulic cylinders are symmetrically arranged about the center line of the valve body.

[0031] The fixed cone valve of the present invention has the following advantages over the prior art:

[0032] (1) By setting a transition cone and a spherical plug on the transition cone, a progressive flow guiding structure is formed in conjunction with the flow guiding cone. This can eliminate abrupt changes in the flow channel, making the flow velocity and flow direction of the medium in the valve body change smoothly, effectively improving the flow capacity of the valve and reducing its vibration and noise.

[0033] (2) By setting a fixed frame and cooperating with the guide plate, the guide cone can be fixed at both ends. By setting a fixed ring and a reinforcing ring, and setting shock-absorbing pads between the fixed ring and the reinforcing ring and between the fixed ring and the mounting plate, the fixing firmness and shock absorption effect of this valve can be improved.

[0034] (3) By setting multiple connecting stiffeners, reinforcing stiffeners, connecting plates and guide vanes in a circumferential arrangement, the flow diversion capacity of this valve can be improved, the friction between water flow and air can be increased, thereby enhancing the energy dissipation effect of this valve. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0036] Figure 1This is a cross-sectional view of a fixed cone valve according to the present invention;

[0037] Figure 2 This is a cross-sectional view of the valve body in a fixed cone valve according to the present invention;

[0038] Figure 3 This is an exploded view of a fixed cone valve according to the present invention;

[0039] Figure 4 This is a perspective view of the spherical plug in a fixed cone valve according to the present invention;

[0040] Figure 5 This is a perspective view of the connecting plate in a fixed cone valve according to the present invention;

[0041] Figure 6 This is a perspective view of the fixing bracket in a fixed cone valve according to the present invention;

[0042] Figure 7 A fixed cone valve of the present invention Figure 1 Enlarged view of point A in the middle;

[0043] Figure 8 A fixed cone valve of the present invention Figure 2 Enlarged view of point B in the middle;

[0044] Figure 9 This is a cross-sectional view of a fixed cone valve according to the present invention, Comparative Example 1.

[0045] Figure 10 This is a vector diagram of the flow velocity of the medium inside a fixed cone valve according to Embodiment 1 of the present invention;

[0046] Figure 11 This is a vector diagram of the flow velocity of the medium in a comparative example 1 of a fixed cone valve according to the present invention.

[0047] The components are as follows: 1. Valve body; 101. Inlet; 2. Guide cone; 21. Connecting plate; 22. Mounting ring; 201. Fixing groove; 3. Transition cone; 31. Spherical plug; 4. Guide plate; 5. Seal; 51. Sealing gasket; 52. Snap ring; 6. Gate cylinder; 7. Fixing cylinder; 71. Mounting section; 72. Guide section; 73. Flared section; 8. Fixing bracket; 81. Fixing ring; 82. Reinforcing ring; 83. Connecting rib; 84. Reinforcing rib; 85. Vibration damping pad; 9. Hydraulic cylinder. Detailed Implementation

[0048] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0049] like Figure 1-11 As shown, a fixed cone valve of the present invention includes a valve body 1, a guide cone 2, a transition cone 3, a guide plate 4, a sealing element 5, and a gate 6.

[0050] Among them, the valve body 1 is a tubular structure and is the main frame of the valve. One end of the valve body 1 is the water inlet 101, and the other end is the water outlet.

[0051] The guide cone 2 is used to divert the medium inside the valve, so that the medium flows out of the valve in a dispersed manner. The guide cone 2 is located at the end of the valve body 1 away from the inlet 101, that is, at the end of the valve body 1 at the outlet.

[0052] The transition cone 3 is used to guide the flow of the medium in the valve body 1 smoothly to the guide cone 2. One end of the transition cone 3 is fixedly installed at the end of the guide cone 2 near the inlet 101, and a spherical plug 31 is fixedly installed at the other end. The outer diameters of the transition cone 3 and the guide cone 2 near the inlet 101 are both smaller than the outer diameters of the ends away from the inlet 101, and the half-apex angle of the transition cone 3 is smaller than the half-apex angle of the guide cone 2. The transition cone 3 and the spherical plug 31, together with the guide cone 2, form a progressive flow guiding structure, such as... Figure 1 As shown, when the medium flows into the valve body 1 from the inlet 101 on the left, it can flow out of the valve body 1 smoothly after being guided by the spherical plug 31, the transition cone 3 and the guide cone 2. This eliminates abrupt changes in the flow path within the valve body 1, making the flow rate and direction of the medium within the valve body 1 more stable, effectively improving the flow capacity of the valve and reducing its vibration and noise.

[0053] Furthermore, in order to ensure the uniformity of the medium flow inside the valve, it is preferable to arrange the valve body 1, the guide cone 2, and the transition cone 3 coaxially.

[0054] Furthermore, it is preferable to position one end of the transition cone 3 inside the valve body 1 to improve the guiding effect of the transition cone 3 on the medium. In order to prevent the formation of vortex zones inside the valve body 1, the half-apex angle of the transition cone 3 should not exceed 30 degrees, and the difference between the half-apex angles of the transition cone 3 and the guide cone 2 should not exceed 35 degrees.

[0055] The guide vane 4 is used to divide the medium in the valve body 1. The guide vane 4 is fixedly installed between the valve body 1, the guide cone 2 and the transition cone 3, and can divide the medium flowing through the guide vane 4 into multiple water flows.

[0056] The sealing element 5 is used to seal the valve body 1, and the sealing element 5 is fixedly installed on the guide cone 2.

[0057] The gate cylinder 6 is the on / off control structure of this valve. The gate cylinder 6 is sealed on the outside of the valve body 1 and is slidably connected to both the valve body 1 and the guide vane 4 to selectively resist the seal 5. Figure 1 As shown, when the gate 6 moves to the left, the medium can pass through the valve body 1. When the gate 6 moves to the right and abuts against the seal 5, it will close the flow channel in the valve body 1 and prevent the flow of the medium.

[0058] When installing a fixed cone valve, a fixing cylinder 7 is installed on the outside of the valve body 1. The fixing cylinder 7 includes an installation section 71, a guide section 72, and a flared section 73. The installation section 71 is fixedly installed on the outside of the valve body 1 and is spaced apart from the gate cylinder 6. The guide section 72 is fixedly installed at the end of the installation section 71 away from the inlet 101. The guide section 72 has a conical tube structure, and its half-apex angle is not less than the half-apex angle of the guide cone 2. The flared section 73 is fixedly installed at the end of the guide section 72 away from the inlet 101. The guide cone 2 is located inside the guide section 72 and the flared section 73. Figure 1 and Figure 3 As shown, the increased inner diameters of the guide section 72 and the flared section 73, combined with the dispersion of the medium by the guide cone 2, allow the medium to be sprayed out in a circular pattern at the right end of the flared section 73, achieving a good energy dissipation effect. Simultaneously, by ensuring that the half-apex angle of the guide section 72 is not less than the half-apex angle of the guide cone 2, even if the half-apex angle of the guide section 72 is greater than or equal to the half-apex angle of the guide cone 2, such as... Figure 1 As shown, when the medium flows between the guide section 72 and the guide cone 2, the flow cross section of the medium will not become smaller and smaller, thus not causing a pressurization effect on the flow of the medium.

[0059] like Figure 1 As shown, the fixed structure of the guide cone 2 is the guide vane 4 on the left. When the valve diameter is large or the stroke is long, the fixing rigidity of the guide cone 2 is relatively poor, which will aggravate vibration and other problems. To solve this problem, a fixing frame 8 can be set. The fixing frame 8 includes a fixing ring 81, a reinforcing ring 82, and a connecting rib plate 83. The reinforcing ring 82 is fitted on the fixing ring 81. The connecting rib plate 83 is fixedly set between the reinforcing ring 82 and the flared section 73. The connecting rib plate 83 can not only fix the reinforcing ring 82, but also separate the medium flowing out of the valve body 1, improving the flow diversion effect of this valve. A connecting plate 21 is fixedly set on the side of the guide cone 2 away from the inlet 101. An installation ring 22 is fixedly set on the side of the connecting plate 21 away from the guide cone 2. The fixing ring 81 is detachably fixed on the side of the installation ring 22 away from the inlet 101. Figure 1 , Figure 5 and Figure 6As shown, a fixing ring 81 is fixed to the right side of the guide cone 2, and a connecting rib plate 83 and a reinforcing ring 82 are fixedly installed inside the flared section 73. The fixing ring 81 and the reinforcing ring 82 are of the socket type, which not only form a fixed structure to support both ends of the guide cone 2 with the guide plate 4, but also facilitates installation; while the fixing ring 81 is hollow, as shown in the figure. Figure 1 As shown, when the medium flows in the valve, the air will flow to the left into the interior of the fixed ring 81, and then circulate along the right side of the guide cone 2 towards the outside of the fixed ring 81, thereby replenishing the outflowing medium with air, increasing the friction between the air and the medium, and improving the atomization effect of the medium.

[0060] Furthermore, a reinforcing rib 84 can be installed in the fixing frame 8, and the reinforcing rib 84 can be fixedly installed inside the fixing ring 81. This not only improves the structural strength of the fixing ring 81, but also divides the circulating air, forming multiple airflows. Specifically, in order to improve the diversion effect of the connecting plate 21, the guide vane 4, and the connecting rib 83 on the medium in the valve body 1, and the diversion effect of the reinforcing rib 84 on the air, such as... Figures 4-6 As shown, multiple connecting plates 21, guide vanes 4, connecting ribs 83, and reinforcing ribs 84 can be provided, and multiple connecting plates 21, guide vanes 4, connecting ribs 83, and reinforcing ribs 84 can be arranged in a circumferential array about the center line of the valve body 1.

[0061] Furthermore, in order to reduce the vibration of the guide cone 2, such as... Figure 7 As shown, damping pads 85 can also be set in the fixing frame 8. The damping pads 85 are fixedly set between the mounting ring 22 and the fixing ring 81 and between the fixing ring 81 and the reinforcing ring 82, respectively, to achieve the effect of damping the flow guide cone 2.

[0062] As a preferred embodiment, depending on the specific structure of the seal 5, a fixing groove 201 can be formed on the guide cone 2, such as... Figure 8 As shown, the sealing element 5 includes a sealing gasket 51 and a retaining ring 52. The sealing gasket 51 is fixedly disposed in the fixing groove 201, and the sliding gate 6 selectively abuts against the sealing gasket 51. The retaining ring 52 is fixedly disposed on the guide cone 2 and abuts against the sealing gasket 51 to fix the sealing gasket 51.

[0063] To facilitate the sliding of the gate cylinder 6, a hydraulic cylinder 9 can be installed, such as... Figure 1 As shown, the hydraulic cylinder 9 is fixedly mounted on the valve body 1, and its telescopic end is fixedly connected to the gate cylinder 6. In order to ensure the smooth movement of the gate cylinder 6, two hydraulic cylinders 9 can be set up, and the two hydraulic cylinders 9 are symmetrically arranged about the center line of the valve body 1.

[0064] The working principle of the fixed cone valve of the present invention is as follows:

[0065] like Figure 1 As shown, the extension end of the hydraulic cylinder 9 is retracted, allowing the medium to flow into the valve body 1 through the inlet 101. The medium is guided by the guide plate 4, the spherical plug 31, the transition cone 3, and the guide cone 2, and will be discharged to the right in a dispersed manner. During the discharge process, the air circulation between the fixed ring 81 and the guide cone 2 can continuously replenish the dispersed medium with air, and the connecting rib plate 83 will separate the sprayed medium, allowing the medium to be discharged in a mist, thereby achieving a better energy dissipation effect.

[0066] To further illustrate the technical effects of the present invention, a detailed description is provided below in conjunction with embodiments and comparative examples.

[0067] Example 1

[0068] like Figure 1 As shown, the half-apex angle of the transition cone 3 is 10 degrees, the half-apex angle of the guide cone 2 is 45 degrees, the half-apex angle of the guide section 72 is 45 degrees, and a fixing frame 8 is provided at the right end of the guide cone 2.

[0069] Comparative Example 1

[0070] like Figure 9 As shown, the half-apex angle of the guide cone 2 is 45 degrees, the half-apex angle of the guide section 72 is 45 degrees, and the guide cone 2 is provided with a cylindrical connecting rod in the prior art, which replaces the transition cone 3 in this invention. The guide cone 2 is a conventional single-sided fixed structure.

[0071] Test Example 1

[0072] The flow rate of the medium in the valve structures of Example 1 and Comparative Example 1 was measured respectively, and the results are shown in the figure. Figure 10 and Figure 11 , Figure 11 The diagram shows the velocity vector of the medium in Comparative Example 1. It can be seen from the diagram that two vortex zones appear on the left side of the guide cone 2, while the medium velocity is higher at the discharge point on the right side of the guide cone 2. Figure 10 The vector diagram shows the flow velocity of the medium in Example 1. As can be seen from the diagram, the vortex zone inside the valve body 1 has been eliminated, and the flow velocity of the medium at the discharge position on the right side of the guide cone 2 is relatively small. This indicates that the transition cone 3 can stabilize the flow velocity and direction of the medium inside the valve body 1, effectively improving the flow capacity of the valve and reducing its vibration and noise. The air circulation achieved by the fixed ring 81 and the transition cone 3 can reduce the flow velocity of the medium and achieve a better energy dissipation effect.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixed cone valve, comprising a valve body (1), a guide cone (2), a guide vane (4), a seal (5), and a gate (6), wherein, One end of the valve body (1) is a water inlet (101); The guide cone (2) is located at the end of the valve body (1) away from the inlet (101); The feature is that it further includes a transition cone (3), one end of which is fixedly disposed at the end of the guide cone (2) near the inlet (101), and a spherical plug (31) is fixedly disposed at the other end. The outer diameters of the transition cone (3) and the guide cone (2) near the inlet (101) are both smaller than the outer diameters of the ends away from the inlet (101), and the half-apex angle of the transition cone (3) is smaller than the half-apex angle of the guide cone (2). The guide vane (4) is fixedly disposed between the valve body (1), the guide cone (2) and the transition cone (3); The sealing element (5) is fixedly mounted on the flow guide cone (2); The gate (6) is sealed on the outside of the valve body (1) and is slidably connected to the valve body (1) and the guide plate (4) respectively, so as to selectively abut against the seal (5).

2. A fixed cone valve as described in claim 1, characterized in that: The valve body (1), the guide cone (2), and the transition cone (3) are arranged coaxially.

3. A fixed cone valve as described in claim 2, characterized in that: One end of the transition cone (3) is located inside the valve body (1), the half-apex angle of the transition cone (3) is not greater than 30 degrees, and the difference between its half-apex angle and that of the guide cone (2) is not greater than 35 degrees.

4. A fixed cone valve as described in any one of claims 1-3, characterized in that: It also includes a fixing cylinder (7), which comprises an installation section (71), a guide section (72), and a flared section (73), wherein, The mounting section (71) is fixedly installed on the outside of the valve body (1) and is spaced apart from the gate cylinder (6); The guide section (72) is fixedly installed at one end of the installation section (71) away from the inlet (101). The guide section (72) is a conical tube structure, and its half-apex angle is not less than the half-apex angle of the guide cone (2). The flared section (73) is fixedly disposed at one end of the guide section (72) away from the inlet (101), and the guide cone (2) is located inside the guide section (72) and the flared section (73).

5. A fixed cone valve as described in claim 4, characterized in that: It also includes a fixing frame (8), which includes a fixing ring (81), a reinforcing ring (82), and a connecting rib plate (83), wherein, The reinforcing ring (82) is fitted onto the fixing ring (81); The connecting stiffener (83) is fixedly disposed between the reinforcing ring (82) and the flared section (73); A connecting plate (21) is fixedly provided on the side of the flow guide cone (2) away from the water inlet (101). An installation ring (22) is fixedly provided on the side of the connecting plate (21) away from the flow guide cone (2). The fixing ring (81) is detachably fixed on the side of the installation ring (22) away from the water inlet (101).

6. A fixed cone valve as described in claim 5, characterized in that: The fixing frame (8) also includes a reinforcing rib plate (84), which is fixedly disposed inside the fixing ring (81).

7. A fixed cone valve as described in claim 6, characterized in that: Multiple connecting plates (21), guide vanes (4), connecting ribs (83), and reinforcing ribs (84) are provided, and multiple connecting plates (21), guide vanes (4), connecting ribs (83), and reinforcing ribs (84) are arranged in a circumferential array about the center line of the valve body (1).

8. A fixed cone valve as described in claim 7, characterized in that: The mounting bracket (8) also includes shock-absorbing pads (85), which are fixedly disposed between the mounting ring (22) and the fixing ring (81) and between the fixing ring (81) and the reinforcing ring (82).

9. A fixed cone valve as described in claim 1, characterized in that: The guide cone (2) is provided with a fixing groove (201); The sealing element (5) includes a sealing gasket (51) and a retaining ring (52), wherein, The sealing gasket (51) is fixedly disposed in the fixing groove (201), and the gate (6) selectively abuts against the sealing gasket (51); The retaining ring (52) is fixedly mounted on the flow guide cone (2) and abuts against the sealing gasket (51).

10. A fixed cone valve as described in claim 1, characterized in that: It also includes a hydraulic cylinder (9), which is fixedly mounted on the valve body (1) and its telescopic end is fixedly connected to the gate (6). There are two hydraulic cylinders (9), and the two hydraulic cylinders (9) are symmetrically arranged about the center line of the valve body (1).

Images