Emergency cut-off voltage regulator

Abstract

The utility model provides an emergency cut-off pressure regulator, and belongs to the technical field of gas equipment. The problem that the transverse size is too large after a pressure reducing valve and a stop valve are installed at the gas outlet end of an existing gas steel cylinder at the same time is solved. The emergency cut-off pressure regulator comprises a first shell provided with an air inlet end and an air outlet end and a cut-off valve assembly arranged in the first shell, and further comprises a second shell with the top open, a sheet-shaped diaphragm and a pressure regulating spring, and the second shell is fixed to the bottom of the first shell; the edge of the diaphragm is tightly pressed between the first shell and the second shell and divides the cavity into an upper cavity and a lower cavity, an outlet of the air outlet end communicates with the upper cavity, and a pressure adjusting piece movably connected with the diaphragm is arranged in the upper cavity. The pressure regulating part is provided with a pressure regulating part right opposite to the outlet of the air outlet end, and when the diaphragm moves towards the lower cavity to deform, the pressure regulating part is close to the outlet of the air outlet end. The emergency cut-off voltage regulator has the advantage of small transverse size.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas equipment and relates to an emergency cut-off voltage regulator. Background Art

[0002] In people's daily lives, gas is an indispensable energy source. People generally use gas through natural gas pipelines entering their homes or gas cylinders.

[0003] For cylinders filled with liquefied gas, the internal pressure is high, and the gas needs to pass through a pressure reducing valve after it is output before it can be used safely by users. However, since a large amount of liquefied petroleum gas or compressed liquefied natural gas is stored in the cylinder, and the cylinder is usually placed in a place such as the kitchen where open flames often exist, there are certain safety hazards. Therefore, in the event of a gas leak, a shut-off valve that can urgently cut off the gas delivery of the cylinder is very necessary.

[0004] However, nowadays household gas cylinders are often placed in a closed space, such as a cupboard. If both a pressure reducing valve and a shut-off valve need to be installed at the outlet of the gas cylinder, the lateral size of the outlet of the entire cylinder will become larger, making installation inconvenient. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes an emergency cut-off pressure regulator to solve the problem that the lateral dimension of the existing gas cylinder is too large after the gas outlet end is simultaneously equipped with a pressure reducing valve and a cut-off valve.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The emergency cut-off pressure regulator comprises a shell one with an air inlet end and an air outlet end and a cut-off valve assembly arranged in the shell one, characterized in that the emergency cut-off pressure regulator also comprises a shell two with an open top, a sheet-shaped diaphragm and a pressure regulating spring, the bottom of the shell one is recessed, the shell two is fixed to the bottom of the shell one and a cavity is formed between the two, the edge of the diaphragm is tightly pressed between the shell one and the shell two and the cavity is divided into an upper cavity and a lower cavity, the pressure regulating spring is arranged in the lower cavity and the two ends of the pressure regulating spring are respectively against the shell two and the diaphragm, the outlet of the air outlet end is connected to the upper cavity, a pressure regulating member movably connected to the diaphragm is arranged in the upper cavity, the pressure regulating member has a pressure regulating portion facing the outlet of the air outlet end, and when the diaphragm moves and deforms toward the lower cavity, the pressure regulating portion approaches the outlet of the air outlet end, and an air outlet hole connecting the upper cavity and the outer side of the shell one is opened through the shell one or the shell two.

[0008] When the emergency cut-off pressure regulator is in use, the air inlet and the air outlet of the shell one are connected to the gas transmission pipeline accordingly. When the gas is supplied normally, the gas enters the shell one from the air inlet, and is transported from the outlet of the shell one to the upper chamber and sent out through the air outlet. In this gas transportation process, if the pressure of the transported gas is large, the gas pressure in the upper chamber increases, pushing the diaphragm to overcome the elastic force of the pressure regulating spring and move and deform toward the lower chamber. At the same time, the pressure regulating part movably connected to the diaphragm drives the pressure regulating part to approach the outlet direction of the gas outlet, so that the gap between the outlet of the gas outlet and the pressure regulating part is reduced, and the gas passing amount is reduced to reduce the gas pressure sent from the gas outlet, so as to achieve the purpose of pressure regulation. When a gas leak occurs, the cut-off valve assembly can be used for emergency cut-off. Here, the cut-off valve assembly can use the existing technology. Compared with the existing technology, the emergency cut-off pressure regulator utilizes the characteristics of the high upper and lower heights of the gas cylinder to integrate the cut-off valve and the pressure reducing valve in the upper and lower directions, making full use of the space of the installation environment, reducing the lateral size, and facilitating installation.

[0009] In the above emergency cut-off voltage regulator, the housing has a columnar outlet protruding downward at the bottom of the outlet end, and the outlet of the outlet end is vertically penetrated and opened in the outlet portion. The columnar outlet portion can better cooperate with the movable voltage regulating portion.

[0010] In the above-mentioned emergency cut-off voltage regulator, the bottom of the shell is provided with downwardly protruding hinge seats on both sides of the gas outlet, a rod-shaped rotating shaft is horizontally passed through the middle of the pressure regulating member, both ends of the rotating shaft are respectively passed through the hinge seats and can rotate circumferentially relative to the hinge seats, one end of the pressure regulating member is movably connected to the diaphragm, and the pressure regulating part is located at the other end of the pressure regulating member. A lever is formed by passing the rotating shaft through the middle of the pressure regulating member, so that when the diaphragm moves downward, the pressure regulating part moves upward to reduce the air gap.

[0011] In the above-mentioned emergency cut-off voltage regulator, a movable seat is fixed on the diaphragm, and one side of the movable seat has a recessed notch in the horizontal direction, and the other end of the voltage regulator relative to the voltage regulator is inserted into the recess in the horizontal direction. The horizontal recessed notch and the voltage regulator are matched to facilitate assembly, and the linkage in the vertical direction will not be affected. In addition, because the swing direction of the voltage regulator is different from the moving direction of the movable seat, a certain space for relative movement can be provided between the voltage regulator and the movable seat by making the width of the recess in the vertical direction larger than the corresponding position of the voltage regulator, thereby ensuring the reliability of the movement of the voltage regulator.

[0012] In the above-mentioned emergency cut-off voltage regulator, the voltage regulator is roughly U-shaped, and the movable seat is provided with the above-mentioned notches at both ends of the voltage regulator, and the two ends of the voltage regulator are respectively correspondingly inserted into the two notches. The two notches and the two ends of the voltage regulator are simultaneously limited to ensure the stability of the cooperation between the voltage regulator and the movable seat.

[0013] In the above-mentioned emergency cut-off voltage regulator, the voltage regulator has a downwardly recessed mounting hole at a position opposite to the outlet of the gas outlet, the voltage regulator is block-shaped and fixed in the mounting hole, and a through hole is provided at the bottom of the mounting hole. The voltage regulator can be a rubber block or other structure, and a through hole is provided at the bottom, so that the upper and lower pressures of the voltage regulator can be balanced, thereby ensuring the stability of the position of the voltage regulator.

[0014] In the above-mentioned emergency cut-off voltage regulator, the outer side of the lower end of the gas outlet portion has a tapered surface, and the diameter of the tapered surface gradually decreases from top to bottom.

[0015] Compared with the prior art, the emergency cut-off pressure regulator utilizes the high vertical height of the gas cylinder to integrate the cut-off valve and the pressure reducing valve in the vertical direction, fully utilizing the vertical space of the installation environment and reducing the lateral size, making the gas cylinder more convenient for installation in a limited space and providing convenience for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional structural schematic diagram of the first embodiment of the emergency cut-off voltage regulator.

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the second embodiment of the emergency cut-off voltage regulator.

[0018] In the figure, 1, air inlet end; 2, air outlet end; 3, shell one; 4, cut-off valve assembly; 5, shell two; 6, diaphragm; 7, pressure-regulating spring; 8, upper chamber; 9, lower chamber; 10, pressure-regulating member; 11, pressure-regulating part; 12, air outlet hole; 13, air outlet part; 14, hinge seat; 15, rotating shaft; 16, mounting hole; 17, through hole. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] Embodiment 1

[0021] like Figure 1As shown, the emergency cut-off pressure regulator includes a housing 3 having an air inlet end 1 and an air outlet end 2, and a cut-off valve assembly 4 disposed in the housing 3. The top of the housing 3 has an annular neck, a pressure cap is threadedly connected to the neck, and the inner side of the bottom of the housing 3 has a concave hole concave downward. The cut-off valve assembly 4 includes a cut-off valve core disposed in the housing 3, a cut-off spring, a valve stem inserted in the pressure cap, and an electromagnetic structure located at the outer end of the valve stem. Here, the valve stem, the electromagnetic structure, and the working principle of the cut-off valve in the cut-off valve assembly 4 are all prior art, which have been described in detail in the patents previously applied for by the applicant and will not be repeated here. In this embodiment, a sealing member is provided in the shell 3, and the sealing member is pressed tightly against the inner side of the shell 3 by a pressure cap. A vertical hole is penetrated through the sealing member in the vertical direction, a horizontal hole is penetrated through the side of the sealing member, and the horizontal hole is communicated with the vertical hole, a sealing ring is provided between the outer side of the sealing member and the shell 3, a cut-off valve core and a cut-off spring are provided below the sealing member, and the cut-off valve core moves upward and blocks the vertical hole under the elastic force of the cut-off spring, and the lower end of the valve stem passes through the vertical hole and abuts against the upper end of the cut-off valve core.

[0022] The emergency cut-off voltage regulator also includes a housing 2 5 with an open top, a sheet-shaped diaphragm 6 and a pressure regulating spring 7. The bottom of the housing 1 3 is concave, and the housing 2 5 is fixed to the bottom of the housing 1 3 to form a cavity between the two. The edge of the diaphragm 6 is tightly pressed between the housing 1 3 and the housing 2 5 to separate the cavity into an upper cavity 8 and a lower cavity 9 that are independent of each other. The upper cavity 8 is located above the lower cavity 9. The pressure regulating spring 7 is arranged in the lower cavity 9 and the two ends of the pressure regulating spring 7 are respectively against the bottom of the housing 2 5 and the lower side of the diaphragm 6. The bottom of the housing 2 5 has a barrel-shaped spring barrel protruding upward, and the lower end of the pressure regulating spring 7 extends into the spring barrel.

[0023] The port of the outlet end 2 of the shell 1 3 is closed, and the outlet of the outlet end 2 is opened at the bottom of the outlet end 2 in the vertical direction, so that the outlet of the outlet end 2 is connected to the upper chamber 8. A pressure regulating member 10 movably connected to the diaphragm 6 is provided in the upper chamber 8. The pressure regulating member 10 has a pressure regulating portion 11 located below the outlet of the outlet end 2 and directly opposite to the outlet of the outlet end 2, and when the diaphragm 6 moves and deforms toward the lower chamber 9, the pressure regulating portion 11 approaches the outlet of the outlet end 2. The shell 1 3 or the shell 2 5 is penetrated with an outlet hole 12 connecting the upper chamber 8 and the outside of the shell 1 3. In this embodiment, the shell 1 3 is provided with a columnar outlet portion 13 protruding downward at the bottom of the outlet end 2, and the outlet of the outlet end 2 is penetrated and opened in the outlet portion 13 in the vertical direction; the outer side of the lower end of the outlet portion 13 has a conical surface, and the diameter of the conical surface gradually decreases from top to bottom.

[0024] Specifically, the bottom of the shell 13 is provided with a downwardly protruding hinge seat 14 on both sides of the air outlet 13, and a rod-shaped rotating shaft 15 is horizontally penetrated in the middle of the pressure regulating member 10. The two ends of the rotating shaft 15 are respectively inserted into the hinge seats 14 on both sides of the air outlet 13, and can rotate circumferentially relative to the hinge seats 14. One end of the pressure regulating member 10 is movably connected to the diaphragm 6, and the pressure regulating part 11 is located at the other end of the pressure regulating member 10. Here, the rotating shaft 15 is closer to the pressure regulating part 11 than the end of the pressure regulating member 10 that is movably connected to the diaphragm 6, so that the pressure regulating member 10 drives the pressure regulating part 11 to swing more labor-saving, and shortens the stroke of the pressure regulating part 11, so that its adjustment accuracy is higher. In this embodiment, the pressure regulating member 10 is roughly U-shaped, and its two ends are used to be movably connected to the diaphragm 6, and the pressure regulating part 11 is provided at the middle connection position.

[0025] A movable seat is fixed on the diaphragm 6. The movable seat is located on both sides of the pressure regulating member 10 and has upwardly protruding connecting parts. The two connecting parts have recesses that are recessed in the horizontal direction on the opposite sides. The two ends of the pressure regulating member 10 are respectively inserted into the two recesses. The pressure regulating member 10 has a downwardly recessed mounting hole 16 at the outlet of the gas outlet 2. The pressure regulating part 11 is block-shaped and fixed in the mounting hole 16. A through hole 17 is opened at the bottom of the mounting hole 16.

[0026] When the emergency cut-off pressure regulator is in use, the gas inlet end 1 and the gas outlet 12 of the shell 3 are connected to the gas delivery pipeline. When the gas is supplied normally, the gas enters the shell 3 from the gas inlet end 1, is transported downward from the outlet of the gas outlet end 2 of the shell 3 to the upper chamber 8, and is sent out through the gas outlet 12.

[0027] During the gas delivery process, if the delivered gas pressure is relatively high, the gas pressure in the upper chamber 8 increases, pushing the diaphragm 6 to overcome the elastic force of the pressure regulating spring 7 and move and deform toward the lower chamber 9. At the same time, the pressure regulating member 10 movably connected to the diaphragm 6 drives the pressure regulating portion 11 toward the outlet of the gas outlet 2, so that the gap between the outlet of the gas outlet 2 and the pressure regulating portion 11 is reduced, reducing the amount of gas passing through, thereby reducing the pressure of the gas delivered from the gas outlet 12, and achieving the purpose of pressure regulation.

[0028] On the contrary, when the delivered gas pressure is low, the gas pressure in the upper chamber 8 decreases, the diaphragm 6 moves upward under the elastic force of the pressure regulating spring 7, and the pressure regulating member 10 swings to cause the pressure regulating part 11 to move downward, thereby increasing the air gap between the upper side of the pressure regulating part 11 and the lower side of the air outlet part 13 and increasing the amount of air passing.

[0029] When a gas leak occurs, the electromagnetic structure is energized, causing the valve core to move upward. The cut-off valve core moves upward under the elastic force of the cut-off spring and abuts against the lower end of the seal, blocking the vertical hole, thereby interrupting the gas supply and ensuring safety.

[0030] Embodiment 2

[0031] like Figure 2 As shown, the technical solution of this embodiment is roughly the same as that of the first embodiment, except that the seal is annular and threadedly connected in the shell 3, and there is a gap between the upper end of the seal and the lower end of the pressure cap to allow air to pass through.

[0032] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An emergency shut-off pressure regulator, comprising a housing (3) having an air inlet end (1) and an air outlet end (2) and a shut-off valve assembly (4) arranged in the housing (3), characterized in that: The emergency cut-off voltage regulator also includes a shell (5) with an open top, a sheet-shaped diaphragm (6) and a pressure regulating spring (7). The bottom of the shell (3) is concave, the shell (5) is fixed to the bottom of the shell (3) and a cavity is formed between the two. The edge of the diaphragm (6) is tightly pressed between the shell (3) and the shell (5) and the cavity is divided into an upper cavity (8) and a lower cavity (9). The pressure regulating spring (7) is arranged in the lower cavity (9) and the two ends of the pressure regulating spring (7) are respectively connected to the shell (5) and the diaphragm (6). The outlet of the gas outlet end (2) is connected to the upper chamber (8), and a pressure regulating member (10) movably connected to the diaphragm (6) is arranged in the upper chamber (8). The pressure regulating member (10) has a pressure regulating portion (11) directly opposite to the outlet of the gas outlet end (2), and when the diaphragm (6) moves and deforms toward the lower chamber (9), the pressure regulating portion (11) approaches the outlet of the gas outlet end (2), and an outlet hole (12) connecting the upper chamber (8) and the outside of the shell one (3) is opened through the shell one (3) or the shell two (5).

2. The emergency shut-off voltage regulator according to claim 1, characterized in that: The shell (3) has a columnar gas outlet portion (13) protruding downward at the bottom of the gas outlet end (2), and the outlet of the gas outlet end (2) is vertically penetrated and opened in the gas outlet portion (13).

3. The emergency shut-off voltage regulator according to claim 2, characterized in that: The bottom of the shell (3) is located on both sides of the air outlet (13) and has a downwardly protruding hinge seat (14), and a round rod-shaped rotating shaft (15) is horizontally penetrated through the middle of the pressure regulating member (10), and the two ends of the rotating shaft (15) are respectively inserted into the hinge seat (14) and can rotate circumferentially relative to the hinge seat (14). One end of the pressure regulating member (10) is movably connected to the diaphragm (6), and the pressure regulating part (11) is located at the other end of the pressure regulating member (10).

4. The emergency shut-off voltage regulator according to claim 3, characterized in that: A movable seat is fixed on the diaphragm (6), one side of the movable seat has a recessed notch in the horizontal direction, and the other end of the pressure regulating member (10) relative to the pressure regulating portion (11) is inserted into the recess in the horizontal direction.

5. The emergency shut-off voltage regulator according to claim 4, characterized in that: The pressure regulating member (10) is roughly U-shaped, and the movable seat is located at both ends of the pressure regulating member (10) and has the above-mentioned notches, and the two ends of the pressure regulating member (10) are respectively correspondingly inserted into the two above-mentioned notches.

6. The emergency shut-off voltage regulator according to any one of claims 1 to 5, characterized in that: The pressure regulating member (10) has a downwardly recessed mounting hole (16) at a position directly opposite to the outlet of the gas outlet end (2); the pressure regulating portion (11) is block-shaped and fixed in the mounting hole (16); and a through hole (17) is provided through the bottom of the mounting hole (16).

7. The emergency shut-off voltage regulator according to any one of claims 2 to 5, characterized in that: The outer side of the lower end of the air outlet portion (13) has a conical surface, and the diameter of the conical surface gradually decreases from top to bottom.

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