Quick-opening ball valve

Abstract

The utility model discloses a quick-opening ball valve, and relates to the field of valves. The quick-opening ball valve comprises a valve body, a sealing ball body and a sealing valve seat; the quick-opening ball valve further comprises a downstream pipeline and a bypass assembly. According to the quick-opening ball valve provided by the utility model, the middle cavity body of the valve cavity, the first channel bypass pipeline and the downstream pipeline can be communicated by opening the first bypass valve; communication between an upstream cavity body and a middle cavity body of the valve cavity is established through a pressure balance hole in the sealing ball body, so that a fluid medium in the upstream cavity body of the valve cavity enters a downstream pipeline through the middle cavity body, a first channel and a bypass pipeline, the pressure relief function is achieved, and therefore the rotating friction torque between the sealing ball body and the sealing valve seat is reduced; therefore, the low-torque quick opening process of the valve is realized. According to the configuration, unreasonable model selection of the actuator for driving the sealing ball body can be avoided, and the model selection and maintenance cost of the actuator can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the valve field, concretely relates to a quick open ball valve. BACKGROUND

[0002] In the related art, the torque of valve opening or closing is usually composed of ball seat friction torque and valve stem sealing friction torque, since the ball seat friction torque will change with the fluctuation of pipeline pressure, therefore, in large-diameter valve, the opening or closing of valve needs the actuator to provide larger torque, if the actuator is not reasonably selected, the valve will appear the condition of unable to open or crawl, and the selection of larger torque actuator has higher actual selection cost and maintenance cost. SUMMARY

[0003] To solve the technical problem of the above background art, the utility model provides a quick open ball valve, including valve body, sealed ball body and sealing valve seat, the sealed ball body and the sealing valve seat are installed in the valve cavity of the valve body, the sealed ball body and the sealing valve seat are rotationally arranged to configure the opening and closing state of the quick open ball valve, the quick open ball valve further includes downstream pipeline and bypass assembly, the downstream pipeline and the downstream cavity of the valve body are communicatively arranged, the bypass assembly includes bypass pipeline and first bypass valve, the first bypass valve is installed on the bypass pipeline, a first channel is arranged through the valve body, one end of the first channel is communicatively arranged with the middle cavity of the valve cavity, the other end of the first channel is communicatively arranged with one port of the bypass pipeline, the other port of the bypass pipeline is communicatively arranged with the downstream pipeline.

[0004] The sealed ball body is provided with a guide channel and a pressure balance hole in communication, the guide channel is suitable for communicating the upstream cavity and the downstream cavity of the valve cavity in the opening state of the quick open ball valve, and the pressure balance hole is suitable for communicating the upstream cavity of the valve cavity and the middle cavity in the stage of switching from the closed state to the opening state of the quick open ball valve.

[0005] As a preferred technical scheme, the quick open ball valve further includes a valve cover, the valve cover is detachably connected to the valve body, a relief hole is arranged in the valve cover, one port of the relief hole is communicatively arranged with the middle cavity of the valve cavity, and the other port of the relief hole is communicatively arranged with the first channel.

[0006] As a preferred technical scheme, a connecting port is arranged on the outer wall surface of the valve body, the connecting port is communicatively arranged with the first channel, and the connecting port and the input port of the bypass pipeline are sealingly and communicatively arranged.

[0007] As a preferred technical scheme, the bypass assembly further comprises a first pipe joint, the first pipe joint is installed at the input port of the bypass pipeline, the first pipe joint and the connecting port are fixedly connected, and the inner cavity of the first pipe joint is in communication with the first channel.

[0008] As a preferred technical scheme, the inner axis of the first channel, the inner axis of the first pipe joint and the inner axis of the input side of the bypass pipeline are coaxially arranged.

[0009] As a preferred technical scheme, the downstream pipeline is provided with a second channel, and the second channel is in sealed communication with the output port of the bypass pipeline.

[0010] As a preferred technical scheme, the bypass assembly further comprises a second pipe joint, the second pipe joint is installed at the output port of the bypass pipeline, the second pipe joint and the second channel are fixedly connected, and the inner cavity of the second pipe joint is in communication with the second channel.

[0011] As a preferred technical scheme, the bypass assembly further comprises a second bypass valve, the second bypass valve is installed on the bypass pipeline, and the first bypass valve and the second bypass valve are arranged at intervals.

[0012] As a preferred technical scheme, the first bypass valve is a bypass ball valve, and the second bypass valve is a bypass stop valve.

[0013] As a preferred technical scheme, the bypass pipeline is provided in an L-shaped bending structure.

[0014] The technical scheme provided by the utility model has the following advantages.

[0015] The quick-opening ball valve comprises a valve body, a sealing ball body and a sealing valve seat, the sealing ball body and the sealing valve seat are installed in a valve cavity of the valve body, the sealing ball body and the sealing valve seat are rotationally arranged to switch the opening and closing state of the quick-opening ball valve, the quick-opening ball valve further comprises a downstream pipeline and a bypass assembly, the downstream pipeline is in communication with a downstream cavity of the valve body, the bypass assembly comprises a bypass pipeline and a first bypass valve, and the first bypass valve is installed on the bypass pipeline, a first channel is provided on the valve body, one end of the first channel is in communication with a middle cavity of the valve cavity, the other end of the first channel is in communication with one port of the bypass pipeline, and the other port of the bypass pipeline is in communication with the downstream pipeline, a guide channel and a pressure balance hole in communication are provided on the sealing ball body, the guide channel is adapted to communicate an upstream cavity and the downstream cavity of the valve cavity in the opening state of the quick-opening ball valve, and the pressure balance hole is adapted to communicate the upstream cavity and the middle cavity of the valve cavity in the stage of switching from the closed state to the opened state of the quick-opening ball valve.

[0016] The quick-opening ball valve of the structure can make the middle cavity of the valve cavity, the bypass pipeline of the first channel and the downstream pipeline communicate by opening the first bypass valve; in the stage of switching the quick-opening ball valve from the closed state to the open state, the sealing ball body and the sealing valve seat rotate relative to each other; the communication between the upstream cavity of the valve cavity and the middle cavity is established through the pressure balance hole on the sealing ball body, so that the fluid medium in the upstream cavity of the valve cavity enters the downstream pipeline through the middle cavity, the first channel and the bypass pipeline, and a pressure relief function is achieved, thereby reducing the rotating friction torque between the sealing ball body and the sealing valve seat, and then realizing the low-torque quick opening process of the valve. The configuration can avoid unreasonable selection of the actuator for driving the sealing ball body, and is beneficial to reducing the selection and maintenance cost of the actuator. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art of the present application, the drawings needed in the following description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 A partial cross-sectional schematic view of the quick-opening ball valve provided by the present application is provided.

[0019] Figure 2 A partial schematic view of the quick-opening ball valve provided by the present application is provided.

[0020] Figure 3 An assembly schematic view of the valve body and the sealing ball body in the quick-opening ball valve provided by the present application is provided.

[0021] Explanation of reference signs:

[0022] 1-valve body; 111-upstream cavity; 112-middle cavity; 113-downstream cavity; 12-first channel; 13-connection port; 2-valve cover; 21-drainage hole; 3-sealing ball body; 31-guiding channel; 32-pressure balance hole; 4-sealing valve seat; 5-downstream pipeline; 51-second channel; 61-bypass pipeline; 62-first bypass valve; 63-second bypass valve; 64-first pipe joint; 65-second pipe joint. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] In the description of the utility model, it is necessary to explain that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0027] Embodiment

[0028] The embodiment provides a quick-opening ball valve, referring to Figures 1 to 3 The quick-opening ball valve comprises a valve body 1, a sealing ball body 3 and a sealing valve seat 4, the sealing ball body 3 and the sealing valve seat 4 are installed in a valve cavity of the valve body 1, and the sealing ball body 3 and the sealing valve seat 4 are rotationally arranged to configure the opening and closing state of the quick-opening ball valve. Wherein, the valve body 1 is sequentially provided with an upstream cavity 111, a middle cavity 112 and a downstream cavity 113 along the flow direction of the valve.

[0029] Referring to Figure 1 A first channel 12 is provided on the valve body 1, one end of the first channel 12 is in communication with the downstream cavity 113 of the valve cavity, and the other end of the first channel 12 is in communication with one port of a bypass pipeline 61, and the other port of the bypass pipeline 61 is in communication with a downstream pipeline 5. A pressure balance hole 32 is provided on the sealing ball body 3, and the pressure balance hole 32 is adapted to communicate the upstream and downstream cavities 113 of the valve cavity sealed by the sealing ball body 3 during the phase of switching the quick-opening ball valve from the closed state to the open state.

[0030] In the embodiment, referring to Figure 1 The quick-opening ball valve further comprises a downstream pipeline 5 and a bypass assembly, the downstream pipeline 5 is in communication with the downstream side of the valve body 1, and the bypass assembly comprises a bypass pipeline 61 and a first bypass valve 62, and the first bypass valve 62 is installed on the bypass pipeline 61.

[0031] The quick-opening ball valve provided by the embodiment can make the upstream cavity 111 in the valve cavity and the middle cavity 112, the first channel 12, and the bypass pipeline 61 and the downstream pipeline 5 communicate by opening the first bypass valve 62.

[0032] Referring to Figures 1 to 3 In the stage of switching the quick-opening ball valve from the closed state to the open state, the sealing ball 3 and the sealing valve seat 4 rotate relative to each other; the communication between the upstream cavity 111 and the middle cavity 112 of the valve cavity is established through the pressure balance hole 32 on the sealing ball 3, so that the fluid medium in the upstream cavity 111 of the valve cavity enters the downstream pipeline 5 through the middle cavity 112, the first channel 12, and the bypass pipeline 61, thereby playing a pressure relief function, reducing the rotating friction torque between the sealing ball 3 and the sealing valve seat 4, and further realizing the low-torque quick-opening process of the valve. This configuration can avoid unreasonable selection of the actuator for driving the sealing ball 3, and is conducive to reducing the selection and maintenance costs of the actuator.

[0033] In a specific embodiment, the valve body 1 and the downstream pipeline 5 are welded.

[0034] As a preferred embodiment, referring to Figures 1 to 3 The quick-opening ball valve further comprises a valve cover 2; the valve cover 2 is detachably connected to the valve body 1, and the valve cover 2 is provided with a relief hole 21, one end of the relief hole 21 is in communication with the middle cavity 112 of the valve cavity, and the other end of the relief hole 21 is in communication with the first channel 12. The middle cavity 112 of the valve cavity and the first channel 12 are communicated through the relief hole 21, a pressure relief path is established by using the relief hole 21, and the space of the valve body 1 and the valve cover 2 inside the valve is fully utilized. The valve cover 2 can be fixedly connected to the valve body 1 by a bolt fastening assembly.

[0035] In some assembly embodiments, referring to Figure 2 The valve body 1 is provided with a connecting port 13 on the outer side wall surface, the connecting port 13 is in communication with the first channel 12, and the connecting port 13 is in sealed communication with the input port of the bypass pipeline 61.

[0036] As a further embodiment, referring to Figure 1 The bypass assembly further comprises a first pipe joint 64, the first pipe joint 64 is installed at the input port of the bypass pipeline 61, the first pipe joint 64 is fixedly connected to the connecting port 13, and the inner cavity of the first pipe joint 64 is in communication with the first channel 12.

[0037] As a preferred embodiment, the inner axis of the first channel 12, the inner axis of the first pipe joint 64, and the inner axis of the input side of the bypass pipeline 61 are coaxially arranged; such an arrangement is conducive to the fluid medium introduced into the middle cavity 112 by the pressure balance hole 32, which flows smoothly and quickly through the first channel 12, the first pipe joint 64, and the bypass pipeline 61 to the downstream pipeline 5, which is conducive to accelerating the rotation process of the sealing ball 3 and improving the opening speed of the valve.

[0038] As a preferred embodiment, referring to Figure 2 , the downstream pipeline 5 is provided with a second channel 51, and the second channel 51 and the output port of the bypass pipeline 61 are sealingly communicated. The second channel 51 is provided in the form of a through groove or a through hole.

[0039] In some assembly embodiments, referring to Figure 1 , the bypass assembly further comprises a second pipe joint 65 installed at the output port of the bypass pipeline 61, and the second pipe joint 65 and the second channel 51 are fixedly connected, and the inner cavity of the second pipe joint 65 and the second channel 51 are in communication.

[0040] As a preferred embodiment, referring to Figure 1 , the bypass assembly further comprises a second bypass valve 63 installed on the bypass pipeline 61, and the first bypass valve 62 and the second bypass valve 63 are arranged at intervals. The actual opening degree and path on-off state of the bypass pipeline 61 are controlled by the first bypass valve 62 and the second bypass valve 63.

[0041] In the working process, when the quick-opening ball valve is working, the first bypass valve 62 and the second bypass valve 63 are in the normally open state, and the bypass pipeline 61 and the downstream pipeline 5 can supply medium flow.

[0042] In a specific embodiment, the first bypass valve 62 is provided as a bypass ball valve, and the second bypass valve 63 is provided as a bypass stop valve. The bypass stop valve is used to adjust the flow and flow rate of the bypass pipeline 61, and the bypass ball valve is used to control the on-off of the path. Of course, as external valves, the first bypass valve 62 and the second bypass valve 63 can be provided as other structures of valves to implement the flow rate, flow, and path on-off control of the bypass pipeline 61, and are not limited to the combination shown in the figure.

[0043] In some embodiments, referring to Figure 1 , the bypass pipeline 61 is provided in the form of an L-shaped bending structure, and the middle segment of the L-shaped bending structure is transitionally provided by an arc-shaped pipe.

[0044] The quick-opening ball valve provided in the embodiment has the following use process:

[0045] In the valve closing stage, the first bypass valve 62 and the second bypass valve 63 on the bypass pipeline 61 are in the closed state first, so as to avoid the flow of the internal medium of the valve to the bypass pipeline 61 when the valve is closed; then the sealing ball valve and the sealing valve seat 4 are relatively rotated, the extension direction of the guide channel 31 deviates from the valve cavity, so that the upstream cavity 111 and the downstream cavity 113 of the valve cavity are isolated and sealed.

[0046] In the valve opening stage, the first bypass valve 62 and the second bypass valve 63 on the bypass pipeline 61 are in the open state, then the sealing ball valve and the sealing valve seat 4 are relatively rotated, the extension direction of the guide channel 31 gradually approaches the valve cavity, so that the upstream cavity 111 and the downstream cavity 113 of the valve cavity are connected, and the medium in the upstream cavity 111 enters the middle cavity 112 of the valve cavity through the pressure balance hole 32, and then flows into the downstream pipeline 5 through the pressure relief hole, the first channel 12, the bypass pipeline 61 and the second channel 51.

[0047] The quick-opening ball valve provided in the embodiment has the bypass pipeline 61 connected to the valve, so as to balance the pressure of the downstream pipeline 5 and the valve cavity in the valve, and the valve can be quickly opened or closed by selecting a low-torque actuator, so that the use requirement of quick opening of the large-diameter valve is effectively met.

[0048] Obviously, the above-described embodiments are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes. Based on the above description, other different forms of changes or modifications can be made by those skilled in the art. Here, all the implementation modes are not enumerated, and the changes or modifications thus extended are still within the protection scope of the present application.

Claims

1. A quick-opening ball valve, comprising a valve body (1), a sealing ball (3), and a sealing seat (4), wherein the sealing ball (3) and the sealing seat (4) are installed within the valve cavity of the valve body (1), and the sealing ball (3) and the sealing seat (4) are rotatably configured to switch the opening and closing states of the quick-opening ball valve; characterized in that, The quick-opening ball valve also includes a downstream pipe (5) and a bypass assembly. The downstream pipe (5) is connected to the downstream cavity (113) of the valve body (1). The bypass assembly includes a bypass pipeline (61) and a first bypass valve (62). The first bypass valve (62) is installed on the bypass pipeline (61). A first channel (12) is provided on the valve body (1). One end of the first channel (12) is connected to the middle cavity (112) of the valve cavity. The other end of the first channel (12) is connected to one port of the bypass pipeline (61). The other port of the bypass pipeline (61) is connected to the downstream pipe (5). The sealing ball (3) is provided with a connecting guide channel (31) and a pressure balance hole (32). The guide channel (31) is adapted to connect the upstream cavity (111) and the downstream cavity (113) of the valve cavity when the quick-opening ball valve is in the open state. The pressure balance hole (32) is adapted to connect the upstream cavity (111) and the middle cavity (112) of the valve cavity during the stage when the quick-opening ball valve switches from the closed state to the open state.

2. The quick-opening ball valve according to claim 1, characterized in that, The quick-opening ball valve also includes a valve cover (2); the valve cover (2) is detachably connected to the valve body (1), and the valve cover (2) is provided with a vent hole (21). One end of the vent hole (21) is connected to the middle cavity (112) of the valve chamber, and the other end of the vent hole (21) is connected to the first channel (12).

3. The quick-opening ball valve according to claim 1, characterized in that, The valve body (1) has a connection port (13) on its outer wall. The connection port (13) is connected to the first channel (12). The connection port (13) is sealed and connected to the input port of the bypass pipeline (61).

4. The quick-opening ball valve according to claim 3, characterized in that, The bypass assembly also includes a first pipe connector (64), which is installed at the input port of the bypass pipeline (61). The first pipe connector (64) and the connection port (13) are fixedly connected, and the inner cavity of the first pipe connector (64) is connected to the first channel (12).

5. The quick-opening ball valve according to claim 4, characterized in that, The inner axis of the first channel (12), the inner axis of the first pipe joint (64), and the inner axis of the input side of the bypass pipe (61) are coaxially arranged.

6. The quick-opening ball valve according to claim 3, characterized in that, The downstream pipe (5) is provided with a second channel (51), and the output port of the second channel (51) and the bypass pipe (61) are sealed and connected.

7. The quick-opening ball valve according to claim 6, characterized in that, The bypass assembly also includes a second pipe connector (65), which is installed at the output port of the bypass pipeline (61). The second pipe connector (65) and the second channel (51) are fixedly connected, and the inner cavity of the second pipe connector (65) and the second channel (51) are connected.

8. The quick-opening ball valve according to any one of claims 1-7, characterized in that, The bypass assembly also includes a second bypass valve (63), which is installed on the bypass line (61), and the first bypass valve (62) and the second bypass valve (63) are spaced apart.

9. The quick-opening ball valve according to claim 8, characterized in that, The first bypass valve (62) is configured as a bypass ball valve, and the second bypass valve (63) is configured as a bypass shut-off valve.

10. The quick-opening ball valve according to any one of claims 1-7, characterized in that, The bypass pipe (61) is configured with an L-shaped bend.

Images