CN212131397U - Fool-proof disassembly-free check three-way valve - Google Patents
Fool-proof disassembly-free check three-way valve Download PDFInfo
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- CN212131397U CN212131397U CN202020486907.4U CN202020486907U CN212131397U CN 212131397 U CN212131397 U CN 212131397U CN 202020486907 U CN202020486907 U CN 202020486907U CN 212131397 U CN212131397 U CN 212131397U
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Abstract
The utility model discloses a foolproof disassembly-free check three-way valve, which comprises a valve seat and a check valve, wherein one side of the valve seat is connected with high-voltage switch equipment through a flange, the other side of the valve seat is connected with an SF6 density controller, and any one of the upper side and the lower side of the valve seat is connected with the check valve; the valve seat is provided with a first air flow channel used for communicating the high-voltage switch device and the check valve inside one side close to the high-voltage switch device, a second air flow channel used for communicating the SF6 density controller and the check valve inside the other side, the check valve is used for controlling the conduction state of the first air flow channel and the second air flow channel, and a valve core is arranged in the second air flow channel and used for controlling the conduction state of the second air flow channel. The utility model discloses need not to set up the electric leakage, can realize the check-up, aerify the process to dismantling-free of three-way valve promptly.
Description
Technical Field
The utility model belongs to the technical field of high tension switchgear, concretely relates to prevent slow-witted type and exempt from to dismantle check-up three-way valve.
Background
The three-way valve is an essential key component on SF6 high-voltage switch equipment such as an SF6 breaker, an SF6 mutual inductor, a GIS and the like, and is also a key product for connecting on-line monitoring equipment or off-line monitoring equipment such as an SF6 density controller, an SF6 density transmitter, a remote transmission type SF6 density controller, micro-water monitoring equipment and the like; the functions of inflating and air supplementing the high-voltage switch equipment can be realized through the three-way valve.
In the prior art, the traditional three-way valve is divided into a ball valve and a needle valve, but no matter the ball valve or the needle valve is used, when inflation and air supply are carried out on high-voltage switch equipment or online detection is carried out on detecting instruments such as an SF6 density controller arranged on the three-way valve, the high-voltage switch body air passage is required to be cut off by rotating a handle or a needle valve ejector rod, and the function is required to be realized, so that the high-voltage switch body air passage is required to pass through the ball valve and the needle valve structure, but because the ball valve and the needle valve are added, a leakage point is naturally added to.
In recent years, the quality problem that the ball valve and the needle valve on the transformer substation leak gas due to the aging of components of the ball valve and the needle valve on the three-way valve is more and more. Great hidden trouble is brought to the safe operation of the transformer substation equipment.
SUMMERY OF THE UTILITY MODEL
In view of this, the main objective of the present invention is to provide a fool-proof disassembly-free check three-way valve.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the embodiment of the utility model provides a prevent slow-witted type and exempt from to dismantle check-up three-way valve, including valve seat, check valve, one side of valve seat is connected with high-pressure switchgear through the flange, and the opposite side is connected with SF6 density controller, and arbitrary side is connected with the check valve about the upper and lower; the valve seat is provided with a first air flow channel used for communicating the high-voltage switch device and the check valve inside one side close to the high-voltage switch device, a second air flow channel used for communicating the SF6 density controller and the check valve inside the other side, the check valve is used for controlling the conduction state of the first air flow channel and the second air flow channel, and a valve core is arranged in the second air flow channel and used for controlling the conduction state of the second air flow channel.
In the above scheme, the first air flow channel includes a first duct and a second duct, the first duct is horizontally disposed in the valve seat, one end of the first duct is communicated with the high-voltage switch device, the other end of the first duct is communicated with one end of the second duct vertically disposed in the valve seat, and the other end of the second duct is communicated with the check valve.
In the above scheme, the second duct is located at the center of the valve seat and is arranged corresponding to the check valve.
In the above scheme, second airflow channel includes third pore, fourth pore, third pore way level sets up the opposite side at the disk seat, third pore way one end and SF6 density controller intercommunication, the other end and the perpendicular fourth pore way one end intercommunication that sets up in the disk seat, the other end and the check valve intercommunication in fourth pore.
In the above scheme, the fourth orifice is eccentrically arranged in the valve seat.
In the above scheme, the check valve includes a valve body, a first ejector rod sleeve, a first ejector rod, a first spring, a first o-shaped sealing ring, and an extension ejector rod, the first ejector rod is arranged in the valve body in a penetrating manner, the first spring and the first ejector rod sleeve are sleeved on one side of the first ejector rod, and the other end of the first ejector rod is connected with the interior of the valve body in a sealing manner through the sleeved first o-shaped sealing ring; and one end of the first ejector rod, which is close to the valve seat, is provided with an extension ejector rod.
In the above scheme, a protrusion matched with the second pore channel of the first air flow channel is arranged at one end of the extension ejector rod close to the valve seat; a sealing gasket is sleeved outside the protrusion.
In the above scheme, the check valve is provided with the second sealing ring and the protective cap.
In the above scheme, the valve core comprises a second ejector rod, a second ejector rod sleeve, a second spring and an ejector rod sealing ring, the second ejector rod penetrates through the ejector rod sealing ring, the second spring and the second ejector rod sleeve are sleeved on one side of the second ejector rod, and the other end of the second ejector rod is hermetically connected with the inside of the ejector rod sealing ring through a sleeved second o-shaped sealing ring; and the ejector rod sealing ring is in sealing connection with the inner wall of the valve seat through a third o-shaped sealing ring.
Compared with the prior art, the utility model discloses need not to set up the electric leakage, can realize check-up, the process of aerifing promptly to the dismantlement-free of three-way valve.
Drawings
Fig. 1 is a schematic structural view of a fool-proof disassembly-free check three-way valve according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a check valve in a fool-proof disassembly-free check three-way valve according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a valve core in a fool-proof disassembly-free check three-way valve according to an embodiment of the present invention;
fig. 4 is a first schematic structural diagram of a fool-proof disassembly-free check three-way valve according to an embodiment of the present invention;
fig. 5 is a second schematic structural view of a fool-proof disassembly-free check three-way valve according to an embodiment of the present invention;
fig. 6 is a third schematic structural view of a fool-proof disassembly-free check three-way valve according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a fourth structure of a fool-proof disassembly-free three-way valve according to an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides a prevent slow-witted type and exempt from to dismantle check-up three-way valve, as shown in fig. 1-3, including valve seat 1, check valve 2, one side of valve seat 1 is connected with high-voltage switchgear through flange 11, and the opposite side is connected with SF6 density controller, and arbitrary side is connected with check valve 2 about the upper and lower; a first air flow channel 12 for communicating the high-voltage switchgear and the check valve 2 is arranged in one side of the valve seat 1 close to the high-voltage switchgear, a second air flow channel 13 for communicating an SF6 density controller and the check valve 2 is arranged in the other side of the valve seat 1, the check valve 2 is used for controlling the conduction state of the first air flow channel 12 and the second air flow channel 13, and a valve core 14 is arranged in the second air flow channel 13 and used for controlling the conduction state of the second air flow channel 13, so that during normal operation, the check valve 2 is in a closed state, the valve core 14 is opened, and SF6 gas of the high-voltage switchgear enters the first air flow channel 12 and the second air flow channel 13 and enters the SF6 density controller; when the high-voltage switch equipment is inflated, SF6 gas in the inflating equipment enters a cavity of a valve seat 1 through the check valve 2 and finally enters the high-voltage switch equipment through a first gas flow channel 12 by controlling the opening degree of the check valve 2; when the online check of the SF6 density controller is needed, the check valve 2 is completely opened, the first air flow channel 12 is closed, at the moment, the check valve 2 is communicated with the SF6 density controller through the second air flow channel 13, the online check of the SF6 density controller is realized, and therefore the check and inflation process can be realized without disassembling the three-way valve.
The first air flow channel 12 includes a first duct 121 and a second duct 122, the first duct 121 is horizontally disposed in the valve seat 1, one end of the first duct 121 is communicated with the high-voltage switch device, the other end of the first duct is communicated with one end of the second duct 122 vertically disposed in the valve seat 1, and the other end of the second duct 122 is communicated with the check valve 2.
The second hole 122 is located at the center of the valve seat 1 and is arranged corresponding to the check valve 2.
The second airflow channel 13 comprises a third hole channel 131 and a fourth hole channel 132, the third hole channel 131 is horizontally arranged on the other side of the valve seat 1, one end of the third hole channel 131 is communicated with the SF6 density controller, the other end of the third hole channel is communicated with one end of the fourth hole channel 132 vertically arranged in the valve seat 1, and the other end of the fourth hole channel 132 is communicated with the check valve 2.
The fourth orifice 132 is eccentrically disposed in the valve seat 1, so that the fourth orifice 132 is always communicated with the check valve 2 no matter what state the check valve 2 is in.
The check valve 2 comprises a valve body 21, a first ejector rod sleeve 22, a first ejector rod 23, a first spring 24, a first o-shaped sealing ring 25 and an extension ejector rod 26, wherein the first ejector rod 23 is arranged in the valve body 21 in a penetrating manner, the first spring 24 and the first ejector rod sleeve 22 are sleeved on one side of the first ejector rod 23, and the other end of the first ejector rod 23 is connected with the interior of the valve body 21 in a sealing manner through the sleeved first o-shaped sealing ring 25; an extending ejector rod 26 is arranged at one end of the first ejector rod 23 close to the valve seat 1.
One end of the extending ejector rod 26 close to the valve seat 1 is provided with a protrusion 261 matched with the second hole passage 122 of the first air flow passage 12; the outside of the protrusion 261 is sleeved with a sealing pad 262.
The check valve 2 is provided with a second sealing ring 27 and a protective cap 28.
A fourth O-ring 29 is disposed between the valve body 21 and the valve seat 1.
The valve core 14 comprises a second ejector rod 141, a second ejector rod sleeve 142, a second spring 143 and an ejector rod sealing ring 144, wherein the second ejector rod 141 is arranged in the ejector rod sealing ring 144 in a penetrating manner, one side of the second ejector rod 141 is sleeved with the second spring 143 and the second ejector rod sleeve 142, and the other end of the second ejector rod 141 is connected with the inside of the ejector rod sealing ring 144 in a sealing manner through a sleeved second o-shaped sealing ring 145; the ejector rod sealing ring 144 is connected with the inner wall of the valve seat 1 in a sealing mode through a third o-shaped sealing ring 146.
The utility model discloses a working process:
when the device normally operates, the check valve 2 is in a closed state, the first ejector rod 23 of the check valve 2 is under the dual action of the first spring 24 and the internal airflow pressure, and the o-shaped sealing ring 35 on the first ejector rod 23 is in contact with the 90-degree surface in the inner cavity of the check valve body 31 to form sealing; meanwhile, the valve core 14 at one end of the SF6 density controller is also opened, the SF6 density controller jacks the ejector rod 142 on the valve core 14, the ejector rod 142 moves by a displacement L, SF6 gas in the high-pressure switch equipment reaches the check valve 2 through the first duct 121 and the second duct 122 in the valve seat 1, passes through the check valve 2 and then enters the third duct 131, and enters the SF6 density controller through the valve core 14 opened in the fourth duct 132.
When the high-pressure switchgear is charged, the first plunger 23 in the check valve 2 moves by a displacement L1, and the sealing pad 262 on the extension plunger 26 does not contact the end face of the second duct 122 on the valve seat 1. At the moment, SF6 gas in the gas charging equipment enters the cavity of the valve seat 1 through the check valve 2 and then enters the high-voltage switch equipment through the second hole 122 and the first hole 121 in the valve seat 1.
When the SF6 density controller needs to be checked on line, the first ejector rod 23 in the check valve 2 moves and displaces L2, L2 is larger than L1, at the moment, the sealing gasket 262 on the extension ejector rod 26 contacts with the end face of the second pore passage 122 on the valve seat 1 to form sealing, so that the air passage of the high-voltage switch equipment is closed, and air flows in the first pore passage 121 and the second pore passage 122 in the valve seat 1 are cut off and cannot enter the SF6 density controller; in this state, the check valve 2 is communicated with the SF6 density controller, thereby realizing the online verification of the SF6 density controller.
The utility model discloses can adopt multiple interface mode to connect, SF6 density controller's direction divide into 90 or 180.
As shown in fig. 4, the embodiment of the utility model provides a prevent slow-witted type and exempt from to dismantle check three-way valve to the direction of screw thread mode and SF6 density controller divide into 180 as the example, the left and right sides relative position of disk seat 1 is connected with SF6 density controller, high-pressure switchgear respectively through M30 hickey 3, and the upside of disk seat 1 connects check valve 2 as the check interface through M30 hickey.
As shown in fig. 5, the embodiment of the utility model provides a prevent slow-witted type and exempt from to dismantle check three-way valve to the direction of screw thread mode and SF6 density controller divide into 90 as the example, the left and right sides relative position of disk seat 1 is connected with check valve 2, high-pressure switchgear respectively through M30 hickey 3, and the upside of disk seat 1 connects SF6 density controller through M30 hickey 3.
As shown in fig. 6, the embodiment of the utility model provides a prevent slow-witted type and exempt from to dismantle check three-way valve to the direction of flange mode and SF6 density controller divide into 180 for the example, flange interface 4 is passed through in the left side of disk seat 1 and SF6 density controller is connected, and right side relative position passes through flange 11 and is connected with high-pressure switchgear, and the side-up check valve 2 of disk seat 1 connects as the check interface.
As shown in fig. 7, the embodiment of the utility model provides a prevent slow-witted type and exempt from to dismantle check three-way valve to the direction of flange mode and SF6 density controller divide into 90 as the example, the left side of disk seat 1 connects check valve 2 as the check interface, and the right side relative position passes through flange 11 to be connected with high tension switchgear, and the upside of disk seat 1 passes through flange interface 4 to be connected with SF6 density controller.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (9)
1. A foolproof disassembly-free check three-way valve is characterized by comprising a valve seat and a check valve, wherein one side of the valve seat is connected with high-voltage switch equipment through a flange, the other side of the valve seat is connected with an SF6 density controller, and the upper side and the lower side of the valve seat are connected with the check valve; the valve seat is provided with a first air flow channel used for communicating the high-voltage switch device and the check valve inside one side close to the high-voltage switch device, a second air flow channel used for communicating the SF6 density controller and the check valve inside the other side, the check valve is used for controlling the conduction state of the first air flow channel and the second air flow channel, and a valve core is arranged in the second air flow channel and used for controlling the conduction state of the second air flow channel.
2. The foolproof disassembly-free check three-way valve of claim 1, wherein the first air passage comprises a first hole and a second hole, the first hole is horizontally arranged in the valve seat, one end of the first hole is communicated with the high-voltage switch device, the other end of the first hole is communicated with one end of the second hole vertically arranged in the valve seat, and the other end of the second hole is communicated with the check valve.
3. The foolproof disassembly-free check three-way valve of claim 2, wherein the second hole is positioned at the center of the valve seat and is arranged corresponding to the check valve.
4. The foolproof disassembly-free check three-way valve of claim 3, wherein the second airflow channel comprises a third hole and a fourth hole, the third hole is horizontally arranged at the other side of the valve seat, one end of the third hole is communicated with the SF6 density controller, the other end of the third hole is communicated with one end of the fourth hole vertically arranged in the valve seat, and the other end of the fourth hole is communicated with the check valve.
5. The foolproof, disassembly-free three-way check valve of claim 4, wherein said fourth orifice is eccentrically disposed within said valve seat.
6. The foolproof disassembly-free check three-way valve according to any one of claims 1 to 5, wherein the check valve comprises a valve body, a first ejector rod sleeve, a first ejector rod, a first spring, a first o-shaped sealing ring and an extension ejector rod, the first ejector rod is arranged in the valve body in a penetrating manner, the first spring and the first ejector rod sleeve are sleeved on one side of the first ejector rod, and the other end of the first ejector rod is connected with the interior of the valve body in a sealing manner through the sleeved first o-shaped sealing ring; and one end of the first ejector rod, which is close to the valve seat, is provided with an extension ejector rod.
7. The foolproof disassembly-free check three-way valve of claim 6, wherein a protrusion matched with the second duct of the first air flow channel is arranged at one end of the extension ejector rod close to the valve seat; a sealing gasket is sleeved outside the protrusion.
8. The foolproof disassembly-free check three-way valve of claim 7, wherein the check valve is provided with a second sealing ring and a protective cap.
9. The foolproof disassembly-free check three-way valve according to claim 8, wherein the valve core comprises a second ejector rod, a second ejector rod sleeve, a second spring and an ejector rod sealing ring, the second ejector rod is arranged in the ejector rod sealing ring in a penetrating manner, the second spring and the second ejector rod sleeve are sleeved on one side of the second ejector rod, and the other end of the second ejector rod is connected with the inside of the ejector rod sealing ring in a sealing manner through a sleeved second o-shaped sealing ring; and the ejector rod sealing ring is in sealing connection with the inner wall of the valve seat through a third o-shaped sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020486907.4U CN212131397U (en) | 2020-04-07 | 2020-04-07 | Fool-proof disassembly-free check three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020486907.4U CN212131397U (en) | 2020-04-07 | 2020-04-07 | Fool-proof disassembly-free check three-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212131397U true CN212131397U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020486907.4U Active CN212131397U (en) | 2020-04-07 | 2020-04-07 | Fool-proof disassembly-free check three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212131397U (en) |
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2020
- 2020-04-07 CN CN202020486907.4U patent/CN212131397U/en active Active
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