Interlock for three-valve group switch control

Abstract

The utility model provides a kind of interlocking device for three valve group switch control, it is related to electrical protection technical field, it includes: connecting rod, its one end rotatably connected with connecting piece;First fixed part, for fixed in the valve handle of gas into material;First fixed part rotatably connected in the end of connecting rod far from the end of connecting piece;Second fixed part, for fixed in the valve handle of gas into;Second fixed part has sliding channel, and the connecting piece of connecting rod is slidably connected with second fixed part by sliding channel;Connecting rope, its one end is connected with the end of connecting rod in the side of second fixed part;Third fixed part, for fixed in the valve handle of gas discharge, and third fixed part is located in the other end of connecting rope, this interlocking device can visualize operation, and have false operation protection measure, avoid the damage of instrument equipment caused by operation step error.

Description

Technical Field

[0001] This utility model relates to the field of electrical protection technology, specifically to an interlocking device for three-valve group switch control. Background Technology

[0002] Currently, the operation of traditional three-valve manifolds mainly relies on manual operation. This requires operators to have considerable experience to ensure that the opening and closing sequence of the three-valve manifold is correct. If the operators lack experience and have not received adequate training, they may manually operate the three-valve manifold, resulting in incorrect opening and closing sequence, which could lead to media impact or pressure surges and damage to the instrumentation equipment. Utility Model Content

[0003] This invention addresses the problem that the switching sequence of three-valve manifolds can easily lead to damage to instruments and equipment due to insufficient operator experience. It provides an interlocking device for controlling the switching of three-valve manifolds, which makes the operation visible and has misoperation protection measures to avoid damage to instruments and equipment due to incorrect operation steps.

[0004] The technical solution adopted in this utility model is:

[0005] An interlocking device for three-valve manifold switching control is provided, comprising:

[0006] A connecting rod, one end of which is rotatably connected to a connector; a first fixing member, used to fix it at the valve handle where gas enters the material; the first fixing member is rotatably connected to the end of the connecting rod away from the connector; a second fixing member, used to fix it at the valve handle where gas is introduced; the second fixing member has a sliding channel, through which the connector of the connecting rod is slidably connected to the second fixing member; a connecting rope, one end of which is connected to the end of the connecting rod located on one side of the second fixing member; a third fixing member, used to fix it at the valve handle where gas is discharged, the third fixing member being located at the other end of the connecting rope.

[0007] Optionally, the first fixing component includes: a first fixing frame with a first through hole on its side wall; a first limiting rod located on the outer top of the first fixing frame, with a first limiting block at the other end of the first limiting rod, and a first limiting hole at one end of a connecting rod, the connecting rod being rotatably connected to the first limiting rod through the first limiting hole; a first screw rod rotatably connected to the first fixing frame through the first through hole; a first fixing plate rotatably connected to the end face of the first screw rod located inside the first fixing frame; and a first handle located on the other end face of the first screw rod.

[0008] Optionally, the second fixing member includes: a second fixing frame with a second through hole on its side wall; a sliding channel located on the outer top of the second fixing frame, and a connector slidably connected to the second fixing frame through the sliding channel; a second screw rod rotatably connected to the second fixing frame through the second through hole; a second fixing plate rotatably connected to one end face of the second screw rod located inside the second fixing frame; and a second handle located on the other end face of the second screw rod.

[0009] Optionally, the third fixing component includes: a third fixing frame with a third through hole on its side wall; one end of the connecting rope connected to the outer top of the third fixing frame; a third screw rod rotatably connected to the third fixing frame through the third through hole; a third fixing plate rotatably connected to one end face of the third screw rod located inside the third fixing frame; and a third handle located on the other end face of the third screw rod.

[0010] Optionally, the connector includes: a second limiting rod, which is slidably connected to the outer top of the second fixed frame through a sliding channel; and a second limiting block, which is disposed on the top end face of the second limiting rod and is used to limit the connector.

[0011] Optionally, a rod is stored on the outer wall of the connecting rod for winding the connecting rope.

[0012] Optionally, a storage basket is also provided on the outer wall of the connecting rod for placing the third fastener.

[0013] Optionally, the second limiting rod has multiple placement slots on the outer wall surface inside the sliding channel. The multiple placement slots are circumferentially distributed on the outer wall surface of the second limiting rod with the central axis of the second limiting rod as the rotation axis. Each placement slot is provided with a ball bearing, and each ball bearing is in rolling contact with the inner wall surface of the second fixed rod inside the sliding channel.

[0014] Optionally, silicone pads are provided on the fixing surfaces of the first fixing plate, the second fixing plate, and the third fixing plate.

[0015] Optionally, nameplates are provided on the outer top of the first fixed frame, the outer top of the second fixed frame, and the outer top of the third fixed frame.

[0016] The beneficial effects of this utility model are:

[0017] By fixing the first fixing member to the valve handle controlling the gas entering the material, fixing the second fixing member to the valve handle for the gas inlet, and fixing the third fixing member to the valve handle for the gas outlet, the switches of the three valve groups are interlocked. The interlocking device can prevent misoperation and prevent gas or medium leakage from damaging the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of an interlocking device for switching control of a three-valve group disclosed in Embodiment 1;

[0020] Figure 2 This is a schematic diagram of the main structure of the interlocking device when the three valves are in the stopped state.

[0021] Figure 3 This is a schematic diagram of the main structure of the interlocking device when the air valve and the nitrogen side valve are opened in the three-valve manifold.

[0022] Figure 4 This is a schematic diagram of the main structure of the interlocking device when the three-valve manifold is in operation.

[0023] Figure 5 This is a side view of the first fastener.

[0024] Figure 6 This is a side view of the second fastener.

[0025] Figure 7 This is a side view of the third fastener.

[0026] Figure 8 This is a schematic diagram of the main structure, showing that the outer wall of the connecting rod has a storage rod and a storage basket respectively.

[0027] Figure label:

[0028] 1-Connecting rod, 10-Storage rod, 11-Storage basket;

[0029] 2-Connecting rope;

[0030] 3-First fixing component, 30-First fixing frame, 31-First through hole, 32-First screw, 33-First fixing plate, 34-First handle, 35-First limiting rod, 36-First limiting block;

[0031] 4-Second fixing component, 40-Second fixing frame, 41-Second through hole, 42-Second screw, 43-Second fixing plate, 44-Second handle, 45-Sliding channel, 46-Second limiting rod, 47-Second limiting block, 48-Placement groove, 49-Ball bearing;

[0032] 5-Third fastener, 50-Third fixing frame, 51-Third through hole, 52-Third screw, 53-Third fixing plate, 54-Third handle;

[0033] 6-Material side valve;

[0034] 7-Nitrogen side valve;

[0035] 8-Valve for empty outlet. Detailed Implementation

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0038] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0039] Example 1

[0040] Please see Figure 1-7 As shown in the figure, this embodiment discloses an interlocking device for three-valve group switch control, including a connecting rod 1, a first fixing member 3, a second fixing member 4, a connecting rope 2, and a third fixing member 5. The first fixing member 3 and the second fixing member 4 are located at opposite ends of the connecting rod 1. The first fixing member 3 is fixed to the valve handle for gas entering the material, and the second fixing member 4 is fixed to the valve handle for gas entering the material. The first fixing member 3 is rotatably connected to one end of the connecting rod 1, and a connecting member is provided between the second fixing member 4 and the other end of the connecting rod 1. The connecting member is rotatably connected to both the connecting rod 1 and the second fixing member 4. One end of the connecting rope 2 is connected to the end of the connecting rod 1 located on one side of the second fixing member 4, and the other end is connected to the third fixing member 5, which is fixed to the valve handle for gas discharge.

[0041] Specifically, the aforementioned first fixing member 3 includes a first fixing frame 30, a first limiting rod 35, a first screw 32, a first fixing plate 33, and a first handle 34. The first fixing frame 30 has a first through hole 31 on its side wall. The first screw 32 is threadedly connected to the first fixing frame 30 through the first through hole 31, allowing the first screw 32 to reciprocate along the central axis of the first through hole 31. The first fixing plate 33 is rotatably connected to the end face of the first screw 32 located inside the first fixing frame 30. The first handle 34 is located on the other end face of the first screw 32. The first handle 34 drives the first screw 32 to rotate, causing the first screw 32 to reciprocate along the central axis of the first through hole 31, thereby moving the first fixing plate 33 inside the first fixing frame 30. The first limiting rod 35 is located on the outer top of the first fixing frame 30. A first limiting hole is formed at the end of the connecting rod 1 near the first fixing member 3, allowing the connecting rod 1 to be rotatably connected to the first limiting rod 35 through the first limiting hole. The first limiting block 36 is disposed at the other end of the first limiting rod 35 to limit the connecting rod 1, preventing the connecting rod 1 from disengaging from the first limiting rod 35 after moving upward along the central axis of the first limiting rod 35. It should be noted that in this embodiment, the number of first through holes 31 opened on the side wall of the first fixing frame 30 can be two, symmetrically distributed on opposite side walls of the first fixing frame 30. Each first through hole 31 is rotatably connected to a first screw 32. Each first screw 32 has a first fixing plate 33 disposed on its end face inside the first fixing frame 30. Each first handle 34 is disposed at the other end of each first screw 32, thus more firmly fixing the first fixing frame 30 to the valve handle. Furthermore, the top of the first fixing plate 33 contacts the inner top of the first fixing frame 30, allowing the first fixing plate 33 to be rotated and limited by the first fixing frame 30, preventing the first fixing plate 33 from rotating along with the first screw 32.

[0042] Furthermore, the second fixing member 4 includes a second fixing frame 40, a second screw 42, a second fixing plate 43, and a second handle 44. The second fixing frame 40 is used to fit onto the valve handle for gas inlet. A second through hole 41 is provided on the side wall of the second fixing frame 40. The second screw 42 is threadedly connected to the second fixing frame 40 through the second through hole 41, allowing the second screw 42 to reciprocate along the central axis of the second through hole 41. The second fixing plate 43 is rotatably connected to the end face of the second screw 42 located inside the second fixing frame 40. The second handle 44 is provided on the other end face of the second screw 42. That is, the second screw 42 is rotated by the second handle 44, and the second screw 42 reciprocates along the central axis of the second through hole 41 inside the second through hole 41, thereby causing the second fixing plate 43 to move inside the second fixing frame 40. The sliding channel 45 is located on the outer top of the second fixed frame 40. A connector is rotatably connected inside the sliding channel 45. The connector is rotatably connected to the other end of the connecting rod 1, meaning that the connector can slide inside the sliding channel 45 while the connecting rod 1 can rotate with the connector. It should be noted that in this embodiment, there can be two second through holes 41 on the side wall of the second fixed frame 40, symmetrically distributed on opposite side walls. Each second through hole 41 is rotatably connected to a second screw 42. Each second screw 42 has a second fixing plate 43 on its end face inside the second fixed frame 40. Each second handle 44 is located at the other end of each second screw 42, thus more firmly fixing the second fixed frame 40 to the valve handle. Furthermore, the top of the second fixing plate 43 contacts the inner top of the second fixed frame 40, allowing the second fixed frame 40 to limit the rotation of the second fixing plate 43, preventing it from rotating along with the second screw 42.

[0043] Specifically, the aforementioned connector includes a second limiting rod 46 disposed on the outer top of the second fixing frame 40, and a second limiting hole opened at one end of the connecting rod 1 near the second fixing member 4, so that the connecting rod 1 is rotatably connected to the second limiting rod 46 through the second limiting hole. A second limiting block 47 is disposed at the other end of the second limiting rod 46 to limit the connecting rod 1 and prevent the connecting rod 1 from disengaging from the second limiting rod 46 after moving upward along the central axis of the second limiting rod 46.

[0044] Furthermore, the third fixing component 5 includes a third fixing frame 50, a third limiting rod, a third screw 52, ​​a third fixing plate 53, and a third handle 54. The third fixing frame 50 has a third through hole 51 on its side wall. The third screw 52 is threadedly connected to the third fixing frame 50 through the third through hole 51, allowing the third screw 52 to reciprocate along the central axis of the third through hole 51. The third fixing plate 53 is rotatably connected to the end face of the third screw 52 located inside the third fixing frame 50. The third handle 54 is located on the other end face of the third screw 52. The third screw 52 rotates through the third handle 54, causing it to reciprocate along the central axis of the third through hole 51, thereby moving the third fixing plate 53 within the third fixing frame 50. The connecting rope 2 is connected to the outer top of the third fixing frame 50. It should be noted that the top of the first fixing plate 33 is in contact with the inner top of the first fixing frame 30, and the first fixing frame 30 can limit the rotation of the first fixing plate 33 to prevent the first fixing plate 33 from rotating together with the first screw 32.

[0045] In summary, when the three-valve assembly is to be in operation, first rotate the valve handle located at the gas discharge port (hereinafter referred to as the air-vent valve 8) to close it. At this time, the connecting rope 2 between the third fixing member 5 and the second fixing member 4 is bent, allowing the gas-inlet valve handle located at the second fixing member 4 (hereinafter referred to as the nitrogen-side valve 7) to rotate. That is, the nitrogen-side valve 7 can only be rotated after the air-vent valve 8 has been closed, preventing gas leakage from the air-vent valve 8. When the nitrogen-side valve 7 is opened, the connecting rod 1 slides in the sliding channel 45 through the connecting member, which opens the valve handle used to fix the gas entering the material (hereinafter referred to as the material-side valve 6), allowing the nitrogen discharged from the nitrogen-side valve 7 to flow towards the material-side valve 6. When the three-valve assembly needs to be stopped, the material-side valve 6 should be closed first. Only after the material-side valve 6 is closed can the nitrogen-side valve 7 be closed. After the nitrogen-side valve 7 is closed, the air-vent valve 8 can be opened to release the nitrogen gas between the nitrogen-side valve 7 and the material-side valve 6. The function of the connecting rope 2 is that when the air-vent valve 8 is closed, the nitrogen-side valve 7 cannot be opened by the pull of the connecting rope 2. The function of the connecting rod 1 is that when the material-side valve 6 is not closed, the nitrogen-side valve 7 cannot be closed, preventing leakage of gaseous media.

[0046] Example 2

[0047] This embodiment is a further optimization based on Embodiment 1, specifically, as follows: Figure 1 , Figure 5 and Figure 8As shown, a storage rod 10 is provided on the outer wall of the connecting rod 1. When the interlocking device is not in use, the connecting rope 2 can be wrapped around the storage rod 10 for storage.

[0048] Furthermore, a storage basket 11 is provided on the outer wall of the connecting rod 1. When the connecting rope 2 is wrapped around the storage rod 10 for storage, the suspended third fixing member 5 can be placed inside the storage basket 11 for protection.

[0049] In the above embodiment 1, the second limiting rod 46 has multiple placement slots 48 on the outer wall surface inside the sliding channel 45. The multiple placement slots 48 are distributed circumferentially on the outer wall surface of the second limiting rod 46 with the central axis of the second limiting rod 46 as the rotation axis. Each placement slot 48 contains a ball 49. Each ball 49 periodically rolls in contact with the inner wall surface of the second fixing frame 40 inside the sliding channel 45. That is, when the connecting rod 1 slides inside the sliding channel 45 through the connecting member, the smoothness of sliding and rotation can be improved by the ball 49.

[0050] Silicone pads (not shown in the figure) are provided on the fixing surfaces of the first fixing plate 33, the second fixing plate 43, and the third fixing plate 53 to protect the valve handles. In addition, nameplates (not shown in the figure) are provided on the top outer surfaces of the first fixing frame 30, the second fixing frame 40, and the third fixing frame 50. These nameplates can be labeled with information to remind users how to secure the various fasteners to the valve handles.

[0051] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An interlocking device for three-valve group switch control, characterized in that, It includes: a connecting rod, one end of which is rotatably connected to a connecting member; a first fixing member, used to fix it at the valve handle where gas enters the material; the first fixing member is rotatably connected to the end of the connecting rod away from the connecting member; a second fixing member, used to fix it at the valve handle where gas is introduced; the second fixing member has a sliding channel, through which the connecting member of the connecting rod is slidably connected to the second fixing member; a connecting rope, one end of which is connected to the end of the connecting rod located on one side of the second fixing member; and a third fixing member, used to fix it at the valve handle where gas is discharged, the third fixing member being located at the other end of the connecting rope.

2. The interlocking device for three-valve group switching control according to claim 1, characterized in that, The first fixing component includes: a first fixing frame with a first through hole on its side wall; a first limiting rod located on the top outer side of the first fixing frame, with a first limiting block at the other end of the first limiting rod, and a first limiting hole at one end of the connecting rod, the connecting rod being rotatably connected to the first limiting rod through the first limiting hole; a first screw rotatably connected to the first fixing frame through the first through hole; a first fixing plate rotatably connected to the end face of the first screw located inside the first fixing frame; and a first handle located on the other end face of the first screw.

3. The interlocking device for three-valve group switching control according to claim 2, characterized in that, The second fixing component includes: a second fixing frame with a second through hole on its side wall; a sliding channel located at the top outer edge of the second fixing frame, and the connecting component slidably connected to the second fixing frame through the sliding channel; a second screw rotatably connected to the second fixing frame through the second through hole; a second fixing plate rotatably connected to one end face of the second screw located inside the second fixing frame; and a second handle located on the other end face of the second screw.

4. The interlocking device for three-valve group switching control according to claim 3, characterized in that, The third fixing component includes: a third fixing frame with a third through hole on its side wall; one end of the connecting rope is connected to the outer top of the third fixing frame; a third screw rod is rotatably connected to the third fixing frame through the third through hole; a third fixing plate is rotatably connected to one end face of the third screw rod located inside the third fixing frame; and a third handle is provided on the other end face of the third screw rod.

5. The interlocking device for three-valve group switching control according to claim 4, characterized in that, The connector includes: a second limiting rod, which is slidably connected to the outer top of the second fixed frame through the sliding channel; and a second limiting block, which is disposed on the top end face of the second limiting rod and is used to limit the connector.

6. The interlocking device for three-valve group switching control according to claim 1, characterized in that, The outer wall of the connecting rod houses the rod for winding the connecting rope.

7. The interlocking device for three-valve group switching control according to claim 1 or 6, characterized in that, The outer wall of the connecting rod is also provided with a storage basket for placing the third fixing component.

8. The interlocking device for three-valve group switching control according to claim 5, characterized in that, The second limiting rod has multiple placement slots on its outer wall surface inside the sliding channel. The multiple placement slots are circumferentially distributed on the outer wall surface of the second limiting rod with the central axis of the second limiting rod as the rotation axis. Each placement slot is provided with a ball bearing, and each ball bearing is in rolling contact with the inner wall surface of the second limiting rod inside the sliding channel.

9. The interlocking device for three-valve group switching control according to claim 4, characterized in that, Silicone pads are provided on the fixing surfaces of the first fixing plate, the second fixing plate, and the third fixing plate.

10. The interlocking device for three-valve group switching control according to claim 4, characterized in that, Nameplates are provided on the outer top of the first fixed frame, the outer top of the second fixed frame, and the outer top of the third fixed frame.

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