Maintenance valve with manual deflation function

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a service valve with a manual deflation function, which aims to solve the problem that a closed air bag in a service pipe section is not easy to eliminate, and comprises a service valve body, and a deflation hole communicated with an inner cavity of the service valve body is arranged on the upper portion of the service valve body. The diameter of the vent hole is 1 / 15-1 / 40 of the diameter of the service valve body, the service valve body is provided with a manual vent device used for opening and closing the vent hole, and the manual vent device is a manual vent valve or a manual ball valve or a plug. The utility model has the effect of eliminating the closed air bag in the maintenance pipe section.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and more specifically relates to a repair valve with a manual air release function. Background Art

[0002] The inspection valve is a pipeline component that is often installed in the pipeline system and has functions such as isolating the pipeline and regulating the flow.

[0003] At present, when the pipeline is refilled with water after the maintenance is completed, the maintenance pipeline section in the water-filled section may have air stored in it due to the lack of air valves or sparsely arranged air valves, resulting in a closed section that is difficult to fill with water, causing closed air pockets to be generated or exist in the maintenance pipeline; the water column during water filling will impact the closed air pockets, generating impact pressure and causing system pressure fluctuations. In addition, the existence of closed air pockets increases the capacity and elasticity of the pipeline system, which may form a spring oscillator effect between the water source and the elastic air pocket, greatly increasing the chance of hydraulic resonance, and may cause pipe bursts or even explosions.

[0004] For this reason, in the related technology, there are automatic exhaust devices such as exhaust valves / air valves that can eliminate the stored air in the pipeline. However, the exhaust valve / air valve often requires a larger installation aperture, such as the installation aperture of the air valve is usually required to be equal to 1 / 5 to 1 / 12 of the main pipeline and the main inspection valve diameter; because the exhaust valve / air valve occupies a large space and requires a large installation aperture, the exhaust valve / air valve is often abandoned in the pipe section due to limited space and the additional exhaust valve / air valve is easy to cause a significant change in the valve body structure of the inspection pipeline / inspection valve, making it still difficult to eliminate the air pockets in the inspection pipe section. Utility Model Content

[0005] In order to eliminate the closed air pockets in the inspection pipe section, the utility model provides an inspection valve with a manual air release function.

[0006] The utility model provides a maintenance valve with a manual air release function, which adopts the following technical solutions:

[0007] A maintenance valve with a manual air bleed function comprises a maintenance valve body, wherein the upper portion of the maintenance valve body is provided with an air bleed hole connected to the inner cavity of the maintenance valve body, the aperture of the air bleed hole is 1 / 15 to 1 / 40 of the aperture of the maintenance valve body, and the maintenance valve body is provided with a manual air bleed device for opening and closing the air bleed hole.

[0008] By adopting the above technical solution, the manual venting device can be used to discharge gas, eliminate the sealed air pockets in the maintenance pipe section where the inspection valve is located, and avoid the sealed air pockets affecting the stability of the pipeline system. For the emergency repair and maintenance of the network management system, the pre-set small-aperture venting holes create conditions for the later installation of the manual venting device. The manual venting device occupies a small space, but can effectively discharge the gas in the pipeline. At the moment of emergency repair, the manual venting device installed at the small-aperture venting hole is a precious and effective means of venting. It is the last guarantee to prevent hydraulic resonance in the water-filled pipe section with a limited length. It can safely achieve the re-empty pipe filling of the maintenance pipe section at the cost of reducing the water filling speed under extreme working conditions.

[0009] As further preferred, the manual air release device is a manual air release valve or a manual ball valve or a plug.

[0010] By adopting the above technical scheme, the manual air bleed valve, manual ball valve and plug have the characteristics of small size, easy installation, low cost and small space occupation, and are suitable for the opening and closing operations of the air bleed hole. They can eliminate the closed air bags in the maintenance pipe section on the basis of limited space and no major changes in the maintenance pipe / maintenance valve body structure.

[0011] As a further preferred embodiment, the diameter of the vent hole is 1 / 20 to 1 / 25 of the diameter of the inspection valve body.

[0012] By adopting the above technical solution, the aperture of the bleed hole is set to 1 / 20 to 1 / 25 of the aperture of the inspection valve body. The smaller aperture increases the convenience and possibility of adding the bleed hole, so that the bleed hole can be used to safely achieve the re-filling of the empty pipe of the inspection pipe section under extreme working conditions at the cost of reducing the water filling speed.

[0013] As a further preference, the manual air bleed device is located on both sides of the valve core closing position of the inspection valve body.

[0014] By adopting the above technical solution, most valves have a fixed installation direction during installation, and the manual air bleed device is set on both sides. During the maintenance work of the pipeline on either side, when filling water again after maintenance, the manual air bleed device can play a role in exhausting air, which is flexible and convenient to use.

[0015] As a further preference, the inspection valve is a gate valve, and the manual air venting device is arranged on the valve body and the upper cover of the gate valve.

[0016] By adopting the above technical solution, the manual deflation device can eliminate the sealed air pockets in the gate valve body and the gate valve upper cover area, destroy the basic conditions for hydraulic resonance of the air-containing pipe section, and eliminate possible safety hazards in the bud. When the manual deflation device is located on the valve body and the upper cover, the air can be deflated through the vent hole on the valve body first. After the vent hole on the upper side of the valve body reaches the deflation limit, if there is still air in the pipeline, the gate valve disc can be opened to connect the vent hole on the gate valve upper cover with the pipe section, so as to continue deflation and remove the remaining air in the pipe section.

[0017] For service valves with manual air release devices located on both sides of the valve core closed position of the service valve body:

[0018] As further preferred, the inspection valve is a gate valve, and the manual air venting device is arranged on the valve body of the gate valve.

[0019] As a further preference, the inspection valve is a centerline butterfly valve, and the manual air bleed device is arranged on the valve body.

[0020] As a further preference, the inspection valve is an eccentric butterfly valve, and the manual air bleed device is arranged on the valve body on one side of the valve core, and on the connecting pipe or expansion joint on the other side of the valve core.

[0021] As a further preference, the inspection valve is an eccentric hemispherical valve, and the manual air release device is arranged on the valve cover of the eccentric hemispherical valve, and on the connecting pipe or expansion joint at the outlet end of the eccentric hemispherical valve.

[0022] As a further preference, the inspection valve is a ball valve, and the manual air bleed device is arranged on the valve body of the ball valve.

[0023] In summary, the utility model at least includes the following beneficial technical effects:

[0024] 1. The manual air bleed device can release the sealed air bag in the inspection pipe section where the inspection valve is located to prevent the sealed air bag from affecting the stability of the pipeline system. For the emergency repair and maintenance of the network management system, the small-aperture air bleed hole creates conditions for the installation of the manual air bleed device. The manual air bleed device occupies a small space, but can effectively discharge the gas in the pipeline. At the moment of emergency repair, the manual air bleed device installed at the small-aperture air bleed hole is a precious and effective means of air bleed. It is the last guarantee to prevent hydraulic resonance in the water-filled pipe section within a limited length. It can safely achieve the re-filling of the empty pipe of the inspection pipe section at the cost of reducing the water filling speed under extreme working conditions.

[0025] 2. Manual air bleed valves, manual ball valves and plugs have the characteristics of small size, easy installation, low cost and small footprint. They are suitable for the opening and closing of air bleed holes. They can eliminate the closed air pockets in the maintenance pipe section on the basis of limited space and no major changes to the maintenance pipe / maintenance valve body structure.

[0026] 3. The manual air bleed device can eliminate the air pockets on both sides of the valve core closing position of the inspection valve body, remove the accumulated gas in the inspection pipe section, destroy the basic conditions for pressure fluctuation (amplifying the positive water hammer intensity) and possible hydraulic resonance in the gas-containing pipe section, and eliminate possible safety hazards in the bud. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the connection structure between the gate valve and the manual air release valves on both sides in the embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of the connection structure between the gate valve and the manual ball valves on both sides in the embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of the structure of the gate valve, the manual ball valves on both sides and the top manual ball valve in the embodiment of the utility model;

[0030] Figure 4 It is a schematic diagram of the connection structure between the eccentric ball valve and the manual air release valve in the embodiment of the utility model;

[0031] Figure 5 It is a schematic diagram of the connection structure between the eccentric ball valve and the manual ball valve in the embodiment of the utility model;

[0032] Figure 6 It is a schematic diagram of the connection structure between the ball valve and the manual air release valve in the embodiment of the utility model;

[0033] Figure 7 It is a schematic diagram of the connection structure between the ball valve and the manual ball valve in the embodiment of the utility model;

[0034] Figure 8 It is a schematic diagram of the connection structure between the eccentric hemispherical valve and the manual air release valve in the embodiment of the utility model;

[0035] Fig. 9 It is a schematic diagram of the connection structure between the eccentric semi-ball valve and the manual ball valve in the embodiment of the utility model.

[0036] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0037] 1. Inspection valve body; 2. Manual air release valve; 3. Manual ball valve; 5. Gate valve; 6. Semi-ball valve; 7. Ball valve; 8. Eccentric butterfly valve; 8-1. Butterfly plate; 9. Eccentric semi-ball valve; 10. Connecting pipe. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0039] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The following is combined with Figure 1-9 The utility model is described in further detail.

[0043] The utility model embodiment discloses a repair valve with a manual air release function.

[0044] Reference Figure 1-9The inspection valve with manual deflation function comprises an inspection valve body 1, an air vent hole communicating with the inner cavity of the inspection valve body 1 is provided on the upper part of the inspection valve body 1, the aperture of the air vent hole is 1 / 15 to 1 / 40 of the aperture of the inspection valve body 1, and a manual deflation device for opening and closing the air vent hole is provided on the inspection valve body 1. The manual deflation device can release the sealed air bag of the inspection pipe section where the inspection valve is located, so as to prevent the sealed air bag from affecting the stability of the pipeline system.

[0045] For the design and construction of the pipe network system, since the diameter of the vent hole is 1 / 15 to 1 / 40 of the diameter of the inspection valve body 1, the diameter is small and easy to set, and the change to the inspection pipe / inspection valve body structure is not significant, and the exhaust work of the inspection pipe can be carried out in a limited and narrow space.

[0046] For the emergency repair and maintenance of the network management system, the manual air bleed device installed at the small-aperture air bleed hole is an invaluable and effective means of bleed during the emergency repair. It is the last guarantee to prevent hydraulic resonance in the water-filled pipe section within a limited length. It can safely achieve the re-filling of the empty pipe of the maintenance pipe section at the cost of reducing the water filling speed under extreme working conditions.

[0047] Furthermore, the manual deflation device is a manual deflation valve 2 or a manual ball valve 3 or a plug. The manual deflation valve 2, the manual ball valve 3, and the plug have the characteristics of small size, convenient installation, low cost, and small space occupation, and are suitable for the opening and closing operation of the deflation hole, and can eliminate the closed air pocket in the maintenance pipe section.

[0048] Furthermore, the diameter of the vent hole may preferably be 1 / 20 to 1 / 25 of the diameter of the inspection valve body 1. In this setting, the diameter of the vent hole is small and easy to set.

[0049] Furthermore, the inspection valve may be a gate valve 5, a butterfly valve, a semi-ball valve 6 or a ball valve 7, etc. The manual air release device may be located on both sides of the valve core closing position of the inspection valve body 1.

[0050] Preferably, in some embodiments, when the inspection valve is a gate valve 5, manual air venting devices are provided on both sides of the valve core closing position of the gate valve 5; or, manual air venting devices are provided on the valve body and the upper cover of the gate valve 5.

[0051] For ease of understanding, Figure 1-2 The design scheme of setting manual air release devices on both sides of the valve core closing position of the gate valve 5 is shown in FIG. Specifically, bosses are set on the top surface or upper position of both sides of the gate valve 5, holes are drilled on the bosses to form air release holes, and manual air release valves 2 or manual ball valves 3 or plugs are set at the air release holes.

[0052] like Figure 3As shown, in some embodiments, manual air release devices are provided on both sides of the valve core closing position of the gate valve 5 and on the upper cover of the gate valve 5. When filling with water, when the water level rises to the height of the air release holes above the two sides of the valve body, the air release holes there will stop releasing air due to water flow blockage, while the upper part of the pipe section still has some air; at this time, by closing the air release holes above the two sides of the gate valve 5, and then slightly opening the valve disc of the gate valve 5, the air release holes on the upper part of the gate valve 5 (i.e., the upper cover of the gate valve 5) are connected to the pipe section, and air can continue to be released to remove the remaining air in the pipe section.

[0053] Furthermore, the inspection valve can be selected as a centerline butterfly valve, and the two manual air release devices are respectively arranged on both sides of the valve core closing position of the centerline butterfly valve.

[0054] Further, such as Figure 4-5 As shown, the inspection valve can be selected as an eccentric butterfly valve 8, a manual air release device is arranged on the upper part of the valve body on one side of the valve core (i.e., the butterfly plate 8-1), and the other manual air release device is arranged on the upper part of the connecting pipe 10 or the expansion joint on the other side of the valve core (i.e., the butterfly plate 8-1).

[0055] Further, such as Figure 6-7 As shown, a design scheme of providing manual air release devices on both sides of the valve core closing position of the ball valve 7 is shown.

[0056] Further, such as Figure 8-9 As shown, the inspection valve can be selected as an eccentric semi-ball valve 9, a manual air release device is arranged on the valve cover of the eccentric semi-ball valve 9, and another manual air release device is arranged on the connecting pipe 10 or the expansion joint at the outlet end of the eccentric semi-ball valve 9.

[0057] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A service valve with manual air release function, characterized in that: The service valve comprises a service valve body (1), wherein the upper part of the service valve body (1) is provided with a vent hole connected to the inner cavity of the service valve body (1), the aperture of the vent hole is 1 / 15 to 1 / 40 of the aperture of the service valve body (1), and the service valve body (1) is provided with a manual venting device for opening and closing the vent hole.

2. The inspection valve with manual air release function according to claim 1, characterized in that: The manual air release device is a manual air release valve (2) or a manual ball valve (3) or a plug.

3. The inspection valve with manual air release function according to claim 1, characterized in that: The diameter of the vent hole is 1 / 20 to 1 / 25 of the diameter of the inspection valve body (1).

4. A service valve with manual air release function according to any one of claims 1 to 3, characterized in that: The manual air release device is located on both sides of the valve core closing position of the inspection valve body (1).

5. A service valve with manual air release function according to any one of claims 1 to 3, characterized in that: The inspection valve is a gate valve (5), and the manual air release device is arranged on the valve body and the upper cover of the gate valve (5).

6. The inspection valve with manual air release function according to claim 4, characterized in that: The inspection valve is a gate valve (5), and the manual air release device is arranged on the valve body of the gate valve (5).

7. The inspection valve with manual air release function according to claim 4, characterized in that: The inspection valve is a center line butterfly valve, and the manual air release device is arranged on the valve body.

8. The inspection valve with manual air release function according to claim 4, characterized in that: The inspection valve is an eccentric butterfly valve (8), and the manual air release device is arranged on the valve body on one side of the valve core, and on the connecting pipe (10) or the expansion joint on the other side of the valve core.

9. The inspection valve with manual air release function according to claim 4, characterized in that: The inspection valve is an eccentric hemispherical valve (9), and the manual air release device is arranged on the valve cover of the eccentric hemispherical valve (9) and on the connecting pipe (10) or the expansion joint at the outlet end of the eccentric hemispherical valve (9).

10. The inspection valve with manual air release function according to claim 4, characterized in that: The inspection valve is a ball valve (7), and the manual air release device is arranged on the valve body of the ball valve (7).

Images