CN212903778U - Low-pressure locking device test tool - Google Patents
Low-pressure locking device test tool Download PDFInfo
- Publication number
- CN212903778U CN212903778U CN202022263108.3U CN202022263108U CN212903778U CN 212903778 U CN212903778 U CN 212903778U CN 202022263108 U CN202022263108 U CN 202022263108U CN 212903778 U CN212903778 U CN 212903778U
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- airtight
- base body
- ejector rod
- locking device
- test fixture
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Abstract
The utility model relates to a low-pressure locking device testing tool, which comprises a tank body, wherein an inflation inlet and a barometer are arranged in the tank body, and an airtight assembly is arranged on the side surface of the tank body through a cover plate; the airtight assembly comprises an airtight base body, and an adjusting threaded sleeve is arranged in the middle of the airtight base body through a threaded structure; the middle part of the adjusting screw sleeve is provided with a sliding cavity, and the lower end of the adjusting screw sleeve is provided with a sliding hole; a push rod is arranged between the airtight base body and the adjusting threaded sleeve in a sliding mode, a pressure spring is sleeved on the periphery of the lower portion of the push rod, a push rod sealing ring is arranged between the radial periphery of the upper portion of the push rod and the airtight base body, a baffle is arranged above the push rod and is installed at the top of the airtight base body, and a gas inlet is formed in the middle of the baffle; and an airtight sealing ring is arranged on the outer side of the baffle. The utility model relates to a simple structure, convenient operation, dependable performance's test fixture, applicable needs in outdoor SF6 circuit breaker, load switch low pressure blocking device reliability test.
Description
Technical Field
The utility model belongs to the technical field of low-voltage apparatus test fixture, a low-pressure blocking device test fixture is related to.
Background
The outdoor high-voltage alternating-current SF6 circuit breaker is a novel outdoor high-voltage product with greatly increased market demand at present. The low-air-pressure locking function is an important technical index of the product. In the manufacturing process of products, if the technical index does not meet the requirement, the whole breaker is completely reworked, so that 100% of airtight components must be tested, and the components are qualified.
Disclosure of Invention
An object of the utility model is to provide a low pressure blocking device test fixture guarantees to produce property ability technical index. The low-air-pressure locking device is tested by simulating the installation and operation conditions of the low-air-pressure locking device in an actual product, so that the technical indexes of the product are met.
According to the utility model provides a technical scheme: a low-pressure locking device testing tool comprises a tank body, wherein an inflation inlet and a pressure gauge are arranged in the tank body, and an airtight assembly is installed on the side face of the tank body through a cover plate; the airtight assembly comprises an airtight base body, and an adjusting threaded sleeve is mounted in the middle of the airtight base body through a threaded structure; the middle part of the adjusting screw sleeve is provided with a sliding cavity, and the lower end of the adjusting screw sleeve is provided with a sliding hole; an ejector rod is arranged between the airtight base body and the adjusting threaded sleeve in a sliding mode, a pressure spring is sleeved on the periphery of the lower portion of the ejector rod, an ejector rod sealing ring is arranged between the radial periphery of the upper portion of the ejector rod and the airtight base body, a baffle is arranged above the ejector rod and mounted at the top of the airtight base body, and a gas inlet is formed in the middle of the baffle; and an airtight sealing ring is arranged on the outer side of the baffle.
As a further improvement of the utility model, the ejector rod is T-shaped.
As a further improvement of the utility model, the ejector pin bottom is stretched out the sliding hole.
As a further improvement of the utility model, the upper end of the pressure spring supports the middle part of the mandril, and the lower end of the pressure spring supports the bottom of the adjusting screw sleeve.
As a further improvement, the radial periphery in ejector pin upper portion is opened there is the seal groove, the ejector pin sealing washer is located in the seal groove.
As a further improvement of the present invention, the baffle is mounted to the airtight base top through a fastening member.
As a further improvement of the present invention, the airtight sealing ring is located in the airtight sealing groove of the upper portion of the airtight base.
As a further improvement of the utility model, the end face of the bottom of the adjusting screw sleeve is provided with a wrench socket.
As a further improvement of the utility model, the lower part of the adjusting threaded sleeve extends out of the airtight base body and is sleeved with the locking nut.
As a further improvement of the utility model, the fastening component is a bolt.
The positive progress effect of this application lies in:
the utility model relates to a simple structure, convenient operation, dependable performance's test fixture, applicable needs in outdoor SF6 circuit breaker, load switch low pressure blocking device reliability test.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the airtight assembly of the present invention.
Fig. 3 is an exploded view of the airtight assembly of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
In fig. 1-3, the gas-tight sealing device comprises a locking nut 1, an adjusting screw sleeve 2, a gas-tight base 3, a gas-tight sealing ring 4, a pressure spring 5, a push rod 6, a push rod sealing ring 7, a baffle plate 8, a fastening assembly 9, a tank body 10, a gas pressure meter 11, a gas charging port 12, a cover plate 13, a gas-tight assembly 14 and the like.
As shown in figure 1, the utility model relates to a low pressure blocking device test fixture, including jar body 10, be equipped with inflation inlet 12 and barometer 11 in jar body 10, jar body 10 side is through apron 13 installation airtight subassembly 14.
As shown in fig. 2-3, the airtight assembly 14 includes an airtight base 3, an adjusting threaded sleeve 2 is mounted in the middle of the airtight base 3 through a threaded structure, a sliding cavity is formed in the middle of the adjusting threaded sleeve 2, a sliding hole is formed in the lower end of the adjusting threaded sleeve, a push rod 6 is slidably arranged between the airtight base 3 and the adjusting threaded sleeve 2, the push rod 6 is T-shaped, and the bottom end of the push rod 6 extends out of the sliding hole. The pressure spring 5 is sleeved on the periphery of the lower part of the ejector rod 6, the upper end of the pressure spring 5 props against the middle part of the ejector rod 6, and the lower end of the pressure spring props against the bottom of the adjusting threaded sleeve 2. The radial periphery of the upper part of the ejector rod 6 is provided with a sealing groove, an ejector rod sealing ring 7 is arranged between the radial periphery of the upper part of the ejector rod 6 and the airtight substrate 3, and the ejector rod sealing ring 7 is positioned in the sealing groove.
A baffle plate 8 is arranged above the ejector rod 6, the baffle plate 8 is installed at the top of the airtight base body 3 through a fastening assembly 9, and a gas inlet is formed in the middle of the baffle plate 8. An airtight sealing ring 4 is arranged on the outer side of the baffle plate 8, and the airtight sealing ring 4 is positioned in an airtight sealing groove in the upper part of the airtight base body 3.
The end face of the bottom of the adjusting threaded sleeve 2 is provided with a wrench socket, so that the adjusting threaded sleeve 2 can be rotated conveniently.
The lower part of the adjusting screw sleeve 2 extends out of the airtight base body 3 and is sleeved with the locking nut 1.
The airtight component 14 is a spring type pressure-adjustable air pressure sensing device, when the airtight component works, air penetrates through an air inlet to push the ejector rod 6 to move, and when the air pressure is greater than the elastic force of the pressure spring 5, the ejector rod 6 descends to trigger the locking mechanism.
The working process of the utility model is as follows:
as shown in figure 1, the side of the tank body 10 is provided with a mounting hole, the airtight component 14 is placed in the mounting hole, one side of the baffle plate 8 is positioned inside the tank body 10, one side of the adjusting screw sleeve 2 is positioned outside the tank body 10, and the airtight sealing ring 4 is attached to the outer wall of the tank body 10 and the periphery of the mounting hole. The airtight member 14 is pressed from the outside by the cover 13, and the can body 10 and the airtight member 14 are fastened by bolts, nuts, elastic washers, flat washers. Thereby achieving a seal between the airtight assembly 14 and the can body 10.
Connecting an air compressor inflation connector on an air pressure gauge 11, stopping inflation and keeping for 10 minutes after the air pressure gauge 11 is inflated to indicate that the specified working air pressure value is reached, observing the change of the air pressure value, if the air pressure value is reduced, indicating that the airtightness of the airtight component does not meet the requirement, if the air pressure value is not changed, measuring and recording the distance from a push rod plane 6 to an adjusting screw sleeve 2 shown in the figure 2, then pumping air until the air pressure value indicates that the specified locking pressure value is reached, observing whether the push rod is displaced, measuring and recording the distance from the push rod plane 6 to the adjusting screw sleeve 2 again after 1 minute, calculating the change of the distance measured twice to obtain the displacement of the push rod, and if the displacement is smaller than the specified stroke, indicating that the locking.
Claims (10)
1. The utility model provides a low pressure blocking device test fixture which characterized in that: the device comprises a tank body (10), wherein an inflation inlet (12) and an air pressure gauge (11) are arranged in the tank body (10), and an airtight assembly (14) is installed on the side surface of the tank body (10) through a cover plate (13); the airtight assembly (14) comprises an airtight base body (3), and the middle part of the airtight base body (3) is provided with an adjusting threaded sleeve (2) through a threaded structure; the middle part of the adjusting screw sleeve (2) is provided with a sliding cavity, and the lower end of the adjusting screw sleeve is provided with a sliding hole; an ejector rod (6) is arranged between the airtight base body (3) and the adjusting threaded sleeve (2) in a sliding mode, a pressure spring (5) is sleeved on the periphery of the lower portion of the ejector rod (6), an ejector rod sealing ring (7) is arranged between the radial periphery of the upper portion of the ejector rod (6) and the airtight base body (3), a baffle (8) is arranged above the ejector rod (6), the baffle (8) is installed at the top of the airtight base body (3), and a gas inlet is formed in the middle of the baffle (8); and an airtight sealing ring (4) is arranged on the outer side of the baffle (8).
2. The low pressure locking device test fixture of claim 1, wherein: the ejector rod (6) is T-shaped.
3. The low pressure locking device test fixture of claim 1, wherein: the bottom end of the ejector rod (6) extends out of the sliding hole.
4. The low pressure locking device test fixture of claim 1, wherein: the upper end of the pressure spring (5) props against the middle part of the ejector rod (6), and the lower end of the pressure spring props against the bottom of the adjusting threaded sleeve (2).
5. The low pressure locking device test fixture of claim 1, wherein: the radial periphery of the upper part of the ejector rod (6) is provided with a sealing groove, and the ejector rod sealing ring (7) is positioned in the sealing groove.
6. The low pressure locking device test fixture of claim 1, wherein: the baffle (8) is arranged on the top of the airtight base body (3) through a fastening assembly (9).
7. The low pressure locking device test fixture of claim 1, wherein: the airtight sealing ring (4) is positioned in the airtight sealing groove at the upper part of the airtight base body (3).
8. The low pressure locking device test fixture of claim 1, wherein: the end face of the bottom of the adjusting threaded sleeve (2) is provided with a wrench socket.
9. The low pressure locking device test fixture of claim 1, wherein: the lower part of the adjusting threaded sleeve (2) extends out of the airtight base body (3) and is sleeved with the locking nut (1).
10. The low pressure locking device test fixture of claim 6, wherein: the fastening component (9) is a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022263108.3U CN212903778U (en) | 2020-10-13 | 2020-10-13 | Low-pressure locking device test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022263108.3U CN212903778U (en) | 2020-10-13 | 2020-10-13 | Low-pressure locking device test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212903778U true CN212903778U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022263108.3U Active CN212903778U (en) | 2020-10-13 | 2020-10-13 | Low-pressure locking device test tool |
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| Country | Link |
|---|---|
| CN (1) | CN212903778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894401A (en) * | 2022-07-12 | 2022-08-12 | 常州埃依琦科技有限公司 | SF6 gas comprehensive detection module |
-
2020
- 2020-10-13 CN CN202022263108.3U patent/CN212903778U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894401A (en) * | 2022-07-12 | 2022-08-12 | 常州埃依琦科技有限公司 | SF6 gas comprehensive detection module |
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