Stop valve

Abstract

The utility model relates to a stop valve. The flow path (3) of the gas is closed when the closing element (4) is in a closed position relative to the closing element seat (5). The force of the closing element spring (6) acts on the closing element (4) towards the closing element seat (5). The inertia body (7) is moved from the rest position to the safety position when the force acting on the inertia body exceeds a given force value and / or when the inclination of the shut-off valve exceeds a given angle. The inertia body (7) in the rest position obstructs a movement of the closing element (4) towards the closing element seat (5). The closing element (4) moves the inertial body (7) away from the rest position if the gas flow in the flow path (3) exceeds a given flow value. A reset pin (108) and an indicator plug (109) or reset member (100) urge the inertial body (7) from a safe position to a rest position. The indicator housing (113) covers the indicator plug (109) when the inertial body (7) is in the rest position.

Description

Technical Field

[0001] This application relates to shut-off valves. Background Technology

[0002] In the prior art, valves are known that interrupt gas flow in the event of a hose or pipe rupture or when the flow rate exceeds a threshold. Other valves interrupt flow in the event of an impact or valve tilting. Typically, each function requires a separate component.

[0003] Document US 4,278,102 A describes a shut-off valve that interrupts the flow of gaseous or liquid fuel after a shock or vibration typically caused by an earthquake. For this purpose, a spherical element is used as an inertial body. The flow is also interrupted due to the surge in fuel velocity. To reset the valve, the cap must be removed to replace the spherical element on the base.

[0004] Document JP S48 62631U provides a shut-off valve with an indicator pin. To reset the valve, the indicator pin must be pushed down into the valve housing. Utility Model Content

[0005] The purpose of this application is to provide a shut-off valve that interrupts gas flow in response to various hazardous situations.

[0006] This objective is achieved by a shut-off valve comprising: an inlet, an outlet, a flow path, a closing element, a closing element seat, a closing element spring, an inertial body, and a reset component. The flow path connects the inlet to the outlet. The flow path is closed when the closing element is in the closed position relative to the closing element seat. The force of the closing element spring acts on the closing element towards the closing element seat. The inertial body is configured to move spontaneously from a rest position to a safe position when the force acting on it exceeds a given force value and / or when the tilt angle of the shut-off valve exceeds a given angle. The inertial body, in a stationary position, impedes the movement of a closing element toward a closing element seat. The closing element moves the inertial body away from the stationary position when the gas flow rate in the flow path exceeds a given flow rate value. A reset component moves the inertial body from a safe position to a stationary position. The reset component includes a reset pin, an indicator plug, and an indicator housing. The reset pin and the indicator plug are connected to each other. Movement of the reset pin and the indicator plug pushes the inertial body toward the stationary position. The indicator housing at least partially covers the indicator plug when the inertial body is in the stationary position.

[0007] The flow path connects the inlet to the outlet, allowing gas to flow along it. The shut-off element closes the flow path, thus interrupting gas flow in abnormal conditions. One scenario is given where the gas flow rate exceeds a given value. This increase in gas flow rate occurs if the gas line connected to the valve has ruptured. Two other scenarios are valve tilting or the application of an accelerating force to the valve. Both of these scenarios could be the result of an accident in the surrounding environment where the valve is used—e.g., a trailer. To detect at least one of these scenarios, an inertial body is used. The inertial body moves from a rest position to a safe position when the applied force exceeds a given force value and / or when the tilt exceeds a given tilt angle.

[0008] When the shut-off element is in the closed position relative to its seat, it interrupts gas flow. The force of the shut-off element spring pushes the shut-off element toward its seat, while an inertial body at rest resists this movement. Therefore, there are two possibilities for the shut-off element to reach the closed position: either the shut-off element is pushed far enough by the gas to overcome the resistance of the inertial body, or the inertial body leaves its rest position, allowing the shut-off element spring to push it toward the closed position. The shut-off element seat includes, for example, a narrow section and a seal such as an O-ring.

[0009] The reset element allows the valve to reset and open the flow path for gas flow. This is accomplished by moving the inertial body from the safe position to the stationary position. Consequently, the closing element is also pushed back from the closed position. Therefore, the shut-off valve responds to at least two situations by interrupting gas flow.

[0010] The reset element not only allows the valve to open but also indicates whether the valve is open. A reset pin and an indicator plug are used to open the flow path. The reset pin and indicator plug are connected to each other, and their movement pushes the inertial body toward a rest position, and thus, moves the closing element away from the closed position. The activation of the valve's closing characteristic is shown because the indicator housing does not cover the indicator plug as it would in the normal open state.

[0011] According to one embodiment, a shut-off element is located within the flow path. The shut-off element includes a base end pointing towards the inlet, and a shut-off element spring is located between the base end of the shut-off element and a base. The shut-off element has a wide base region on which the gas flow is directed. The shut-off element spring is located within the gas flow and between the base end and the base.

[0012] In this embodiment, the shut-off valve further includes a housing surrounding a chamber, with an inertial body located within the chamber. The inertial body has a larger end side and a smaller end side. The chamber and the flow path are connected to each other through an opening. A closing element enters the chamber through the opening, and the larger end side of the inertial body points towards the closing element. The inertial body is located within the chamber of the housing. Gas also enters the chamber due to the connection between the flow path and the chamber through the opening. Preferably, the opening is located downstream of the closing element seat. Therefore, if the flow path is interrupted, the pressure in the chamber will drop as gas leaves the valve through the outlet. The closing element enters the chamber through the opening and can therefore interact with the inertial body. In the example, the inertial body sits on top of the closing element. The form of the inertial body with the larger end side and the smaller end side (e.g., given as a truncated cone or a truncated pyramid with a hexagonal or octagonal base or a spherical cap) helps to define a force that can cause movement of the inertial body and thus cause the valve to close. This force is preferably the result of a collision or tilting of a moving trailer. The inertial body in this embodiment differs from a sphere.

[0013] In another embodiment, the closing element has a form similar to an elongated teardrop-shaped element with a flat base.

[0014] In one embodiment, the reset component further includes a reset housing, a mold portion, and a mold portion spring. The reset housing surrounds a pressure chamber connected to a chamber surrounding the inertial body. The mold portion is located within the pressure chamber, and the mold portion and indicator housing are connected to each other. The force of the mold portion spring acts on the mold portion towards the interior of the pressure chamber. In this embodiment, the chamber where the inertial body is located is connected to the pressure chamber belonging to the reset component. This connection allows gas to flow from that chamber to the pressure chamber. The pressure in the pressure chamber pushes the indicator housing away from the reset housing and thus towards the indicator plug. Therefore, the gas in the pressure chamber ensures that the indicator plug is surrounded by the indicator housing. If gas flows out of the pressure chamber and the pressure decreases, the mold portion spring pulls the indicator housing towards the reset housing and thus away from the indicator plug.

[0015] According to one embodiment, the indicator housing includes a front region, the dimensions of which are matched to the dimensions of the indicator plug such that at least a portion of the indicator plug is fitted into the front region. The indicator housing also includes a rear region, the dimensions of which are matched to the dimensions of the front end portion of the reset housing such that at least a portion of the front end portion is fitted into the rear region. In one embodiment, the front region of the indicator housing has an opening whose inner diameter is larger than the outer diameter of the indicator plug. This allows the indicator plug to be surrounded by the indicator housing and therefore less protruding and less easily seen during normal operation. In another embodiment, the indicator housing includes a rear region larger than the front end portion of the reset housing. Therefore, if the indicator housing moves rearward toward the reset housing, the rear region partially covers the front end portion of the reset housing. In yet another embodiment, the rear region includes an opening whose inner diameter is larger than the outer diameter of the front end portion of the housing. Attached Figure Description

[0016] In detail, there are many possibilities for designing and further developing the shut-off valve. Refer to the following description of preferred embodiments in conjunction with the accompanying drawings.

[0017] The attached diagram shows:

[0018] Figure 1 This is a cross-sectional view of the shut-off valve of this application in its normal state, and

[0019] Figure 2 It is in the enabled state. Figure 1 The valve. Detailed Implementation

[0020] Figure 1 and Figure 2 Embodiments of the valve of this application in two different states are shown. Figure 1 The diagram illustrates the normal state, in which gas flows along flow path 3 from inlet 1 to outlet 2. Figure 2 In this case, the valve's closing feature is activated and gas flow is interrupted. Two figures are described together below.

[0021] The valve includes a housing 8 and a reset housing 110. The housing 1 includes an inlet 1 and an outlet 2 for gas. The reset housing 110 is part of a reset component 100. A base 11, a closing element spring 6, and a closing element 4 are located within a flow path 3. The closing element 4 has a wide base end 40, followed by a conical section, and terminates in a similar thin pin-like section. This pin section passes through a narrow section along the flow path 3. The narrow section forms a closing element seat 5. This closing element seat 5 matches the closing element 4 such that when the closing element 4 is in the closed position, the flow of gas is interrupted (see [reference]). Figure 2The closing element spring 6 pushes the closing element 4 toward the closed position. The closing element spring 6 is located between the base end 40 and the base 11, and is also partially located within the base end 40 and the base 11.

[0022] For gas flow—such as Figure 1 As shown, the force of the closing element spring 6 is balanced by the inertial body 7, which sits on the closing element 4 and prevents the closing element 4 from moving, specifically upwards. The inertial body 7 is located inside the chamber 9 of the housing 8, which is connected to the flow path 3 through the opening 10. Therefore, on the one hand, the closing element 4 and the inertial body 7 interact with each other through the opening 10, and on the other hand, gas also flows into the chamber 9. In the illustrated embodiment, the inertial body 7 has the form of a tapered truncated section.

[0023] There are two possibilities for the shut-off element 4 to reach the shut-off position: the gas flow rate increases to exceed the given flow rate value; or the inertial body 7 leaves the stationary position.

[0024] In the first case, the closing element 4 moves upward and pushes the inertial body 7 away from the rest position. The flow rate required to move the closing element 4 toward the closed position depends at least on the weight of the inertial body 7 and the force of the closing element spring 6.

[0025] In the second case, the inertial body 7 moves from its rest position on its own (see...) Figure 1 Move to a safe location (see...) Figure 2 In the safe position, the inertial body 7 is not seated on the opening 10, so that the closing element 4 can be pushed upward by the closing element spring 6.

[0026] The inertial body 7 moves to a safe position due to the external force acting on the valve. A possible scenario is when the valve is used inside a trailer. Due to an accident, the trailer may experience a significant acceleration force, or even tilt. The inertial body 7 responds to forces exceeding a given value and tilt angles exceeding a given value. Therefore, in the event of an accident, the inertial body 7 moves towards a safe position, allowing the closing element spring 6 to push the closing element 4 towards the closing element seat 5 (see...). Figure 2 ).

[0027] To open and reset the valve, the user manually uses the reset component 100. The user pushes the indicator plug 109 downwards. As a result, the inertial body 7 is pushed back to its rest position and the closing element 4 is pushed away from the closing element seat 5.

[0028] The reset component 100 has a reset housing 110 fixed to the housing 8. Furthermore, there is a connection that allows gas to enter the interior of the reset housing 110 via a chamber 9. Since the chamber 9 is located downstream of the shut-off element seat 5, it is opened in the flow path 3 (see...). Figure 1In the case of ), gas is present only in chamber 9 and in reset housing 110.

[0029] The reset housing 110 includes a pressure chamber 107 connected to the chamber 9. A reset pin 108 is movable downward along the axis of the reset housing 110. The length of the reset pin 108, the size of the inertial body 7, and the size of the chamber 9 are matched such that the downward movement of the reset pin 108 pushes the inertial body 7 from a safe position to a stationary position.

[0030] A reset pin 108—in the illustrated embodiment, a rod-shaped reset pin 108—is connected at one end to an indicator plug 109. A disc-shaped member 115 is fixed to the reset pin 108. During the reset movement, the disc-shaped member 115 compresses a reset spring 106, which is located between the shoulder of the housing 8 and the disc-shaped member 115.

[0031] A mold section 117 is movably arranged in the pressure chamber 107. If the pressure in the pressure chamber 107 exceeds a given value, the mold section 117 will move upward against the force of the mold section spring 119. When the mold section 117 is connected to the indicator housing 113, the indicator plug 109 is increasingly surrounded radially by the front region 112 of the indicator housing 113. Therefore, the gas in the pressure chamber 107 pushes the indicator housing 113 toward the indicator plug 109, and the position of the indicator plug 109 is not affected by the gas pressure. The front region 112 of the indicator housing 113 has an opening whose inner diameter is larger than the outer diameter of the indicator plug 109.

[0032] The indicator housing 113 in the illustrated embodiment also includes a rear region 114 having an opening larger than the corresponding front end of the reset housing 110. Therefore, if the pressure in the pressure chamber 107 is not greater than a given value, the rear region 114 of the indicator housing 113 moves over the front end of the reset housing 110.

[0033] Therefore, during normal valve operation, the indicator plug 109 is not easily visible because it is partially covered by the indicator housing 113. If the valve is closed, the indicator housing 113 moves back, and the visible indicator plug 109 indicates that the safety function has been activated. To increase contrast, the indicator plug 109 preferably has a bright color (e.g., yellow), while the indicator housing 113 displays a darker color (e.g., black). Both the indicator plug 109 and the indicator housing 113 are located outside the reset housing 110.

[0034] A reset pin 108 passes through a channel within the mold section 117. A seal 111 surrounds the reset pin 108 within this channel. The reset pin 108 is movable relative to the mold section 117 and relative to the indicator housing 113. The mold section 117 has a seal 118 within a pressure chamber 107 that seals the opening between the mold section 117 and the inner wall of the pressure chamber 107.

[0035] List of reference numerals

[0036] 1. Entrance

[0037] 2 Exports

[0038] 3. Flow path

[0039] 4. Shut-off components

[0040] 5. Close the component socket

[0041] 6. Closing element spring

[0042] 7. Inertial bodies

[0043] 8. Housing

[0044] Room 9

[0045] 10 Openings

[0046] 11. Base

[0047] 40 Base end

[0048] 100 Reset Component

[0049] 106 Return Spring

[0050] 107 Pressure Chamber

[0051] 108 Reset Pin

[0052] 109 Indicator plug

[0053] 110 Reset Housing

[0054] 111 Seals

[0055] 112 Front Area

[0056] 113 Indicator Housing

[0057] 114 Rear Area

[0058] 115 Disc-shaped components

[0059] 117 Mold Department

[0060] 118 Seals

[0061] 119 Mold Department Spring

Claims

1. A shut-off valve, characterized in that, The shut-off valve includes: an inlet (1), an outlet (2), a flow path (3), a shut-off element (4), a shut-off element seat (5), a shut-off element spring (6), an inertial body (7), and a reset component (100). The flow path (3) connects the inlet (1) to the outlet (2). When the closing element (4) is in the closed position relative to the closing element seat (5), the flow path (3) is closed. The force of the closing element spring (6) acts on the closing element (4) towards the closing element seat (5). The inertial body (7) is configured to move automatically from a rest position to a safe position when the force acting on the inertial body (7) exceeds a given force value and / or when the tilt of the shut-off valve exceeds a given angle. The inertial body (7) in the stationary position hinders the movement of the closing element (4) toward the closing element seat (5). Wherein, the shut-off element (4) causes the inertial body (7) to move away from the stationary position when the gas flow rate in the flow path (3) exceeds a given flow rate value. The reset component (100) moves the inertial body (7) from the safe position to the stationary position. The reset component (100) includes a reset pin (108), an indicator plug (109), and an indicator housing (113). The reset pin (108) and the indicator plug (109) are connected to each other. The movement of the reset pin (108) and the indicator plug (109) pushes the inertial body (7) toward the stationary position, and The indicator housing (113) at least partially covers the indicator plug (109) when the inertial body (7) is in the stationary position.

2. The shut-off valve according to claim 1, characterized in that, in, The shut-off valve also includes a housing (8), The shell (8) surrounds the chamber (9). The inertial body (7) is located inside the chamber (9). The inertial body (7) has a larger end side and a smaller end side. The chamber (9) and the flow path (3) are connected to each other through an opening (10). The closing element (4) enters the chamber (9) through the opening (10), and The larger end portion of the inertial body (7) points towards the closing element (4).

3. The shut-off valve according to claim 2, characterized in that, in, The reset component (100) further includes a reset housing (110), a mold part (117), and a mold part spring (119). The reset housing (110) surrounds the pressure chamber (107). The pressure chamber (107) is connected to the chamber (9) surrounding the inertial body (7). The mold part (117) is located inside the pressure chamber (107). The mold part (117) and the indicator housing (113) are connected to each other, and The force of the spring (119) in the mold part acts on the mold part (117) towards the interior of the pressure chamber (107).

4. The shut-off valve according to claim 3, characterized in that, in, The indicator housing (113) includes a front region (112), and The dimensions of the front region (112) and the indicator plug (109) are matched such that at least a portion of the indicator plug (109) is fitted into the front region (112). The indicator housing (113) includes a rear region (114), and The dimensions of the rear region (114) and the front end of the reset housing (110) are matched such that at least a portion of the front end is fitted into the rear region (114).

5. The shut-off valve according to any one of claims 1 to 4, characterized in that, in, The shut-off element (4) is located within the flow path (3). The closing element (4) includes a base end (40) pointing towards the inlet (1), and The closing element spring (6) is located between the base end (40) of the closing element (4) and the base (11).

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