CN215980922U - Pipe joint type cut-off plug door for railway vehicle - Google Patents
Pipe joint type cut-off plug door for railway vehicle Download PDFInfo
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- CN215980922U CN215980922U CN202122118853.3U CN202122118853U CN215980922U CN 215980922 U CN215980922 U CN 215980922U CN 202122118853 U CN202122118853 U CN 202122118853U CN 215980922 U CN215980922 U CN 215980922U
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- Prior art keywords
- ball valve
- valve
- air outlet
- vent hole
- air
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- 238000007789 sealing Methods 0.000 claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 2
- 239000004809 Teflon Substances 0.000 claims 1
- 229920006362 Teflon® Polymers 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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Abstract
The utility model discloses a pipe joint type cut-off plug door for a railway vehicle, which comprises: the valve body is provided with an air inlet, an air outlet and an air outlet, and an air passage is arranged between the air inlet and the air outlet; the air inlet and the air outlet are used for being connected with a brake pipeline; a ball valve is arranged in the air passage; the valve body is also provided with a rotating mechanism, the rotating mechanism is connected with the ball valve, and the rotating mechanism is used for driving the ball valve to rotate so as to enable the cut-off cock to work in a normal running state, an exhaust state and a test state; the ball valve is characterized in that a spherical sealing gasket, a copper gasket and a belleville spring are sequentially arranged on two sides of the ball valve, and the belleville spring is extruded after the valve cover is screwed into the valve body, so that the spherical sealing gasket is attached to the ball valve to realize sealing. The utility model has good sealing effect in low temperature environment, small opening moment and difficult abrasion.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a pipe-connecting type cut-off plug valve for a railway vehicle.
Background
Existing shutoff cock relies on metal seal between precision finishing's ball valve and the valve body to realize sealedly on the market, CN201710868694.4 discloses a shutoff cock, applied this braking pipeline assembly and rail vehicle who blocks the cock, wherein, blocks the cock and includes: the valve body is provided with an air inlet, an air outlet and an air outlet, and an air passage is arranged between the air inlet and the air outlet; the air inlet and the air outlet are used for being connected with a brake pipeline; a valve core is arranged in the air passage; the valve body is also provided with a rotating mechanism, the rotating mechanism is connected with the valve core, and the rotating mechanism is used for driving the valve core to rotate so as to enable the cut-off cock to work in a normal running state, an exhaust state and a test state; the exhaust port is provided with a pressure detection device joint, and the pressure detection device joint is used for being connected with a pressure detection device so as to detect the pressure in the brake pipeline when the stop cock works in a test state. The technical scheme has the advantages of poor sealing effect in a low-temperature environment, large opening moment and easy abrasion, and does not meet the standard requirement of the current railway vehicle on the cut-off cock.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the pipe-connecting type cut-off plug door for the railway vehicle, which has the advantages of good sealing effect in a low-temperature environment, small opening moment and low possibility of abrasion.
The purpose of the utility model is realized by the following technical scheme.
A pipe-jointed type cutoff plug door for a railway vehicle, comprising: the valve body is provided with an air inlet, an air outlet and an air outlet, and an air passage is arranged between the air inlet and the air outlet; the air inlet and the air outlet are used for being connected with a brake pipeline; a ball valve is arranged in the air passage; the valve body is also provided with a rotating mechanism, the rotating mechanism is connected with the ball valve, and the rotating mechanism is used for driving the ball valve to rotate so as to enable the cut-off cock to work in a normal running state, an exhaust state and a test state; the ball valve is characterized in that a spherical sealing gasket, a copper gasket and a belleville spring are sequentially arranged on two sides of the ball valve, and the belleville spring is extruded after the valve cover is screwed into the valve body, so that the spherical sealing gasket is attached to the ball valve to realize sealing.
The ball valve is a ball valve with a side row.
The rotating mechanism comprises a rotating handle and a rotating rod, and the rotating handle is fixed on the ball valve through the rotating rod.
And a first O-shaped sealing ring and a gasket are arranged between the valve body and the rotating rod.
And a second O-shaped sealing ring is arranged between the spherical sealing gasket and the valve cover and between the spherical sealing gasket and the valve body.
The valve cover, the valve body, the rotary rod and the ball valve are made of brass.
The spherical sealing gasket is made of polytetrafluoroethylene.
The cut-off cock is opened in parallel or at right angle.
A vent hole and an exhaust hole are arranged in the ball valve, and the exhaust hole is communicated with the vent hole; the ball valve rotates until the vent hole, the air inlet and the air outlet are communicated, so that the normal operation state is realized; the ball valve rotates until the air inlet, the air outlet and the vent hole are communicated, and the vent hole is also communicated with the air outlet, so that the test state is realized; or the ball valve rotates until the air inlet, the air outlet and the vent hole are communicated, and the vent hole is also communicated with the exhaust port, so that the test state is realized; the ball valve rotates to the air outlet, the exhaust hole, the air vent and the exhaust port are communicated, and the exhaust state is achieved.
Compared with the prior art, the utility model has the advantages that: the utility model has good sealing effect in low-temperature environment, small opening moment and difficult abrasion, and meets the standard requirement of the prior railway vehicle on the cut-off cock.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a diagram of parallel bit on according to the present invention.
FIG. 3 is a schematic diagram of a right angle bit on according to the present invention.
In the figure: 1. the valve comprises a valve cover 2, a valve body 3, a rotary handle 4, a rotary rod 5, a ball valve 6, a spherical sealing gasket 7, a copper gasket 8, a belleville spring 9, a first gasket 10, a second gasket 11, a self-locking nut 12, a first O-shaped sealing ring 13, a second O-shaped sealing ring 14, a spring gasket 15, a rotary handle rubber sleeve 16, an air inlet 17, an air outlet 18 and an air outlet.
Detailed Description
The utility model is described in detail below with reference to the drawings and specific examples.
As shown in fig. 1, a pipe-joint type cut-off plug for a railway vehicle includes: the valve body is provided with an air inlet, an air outlet and an air outlet, and an air passage is arranged between the air inlet and the air outlet; the air inlet and the air outlet are used for being connected with a brake pipeline; a ball valve is arranged in the air passage; the valve body is also provided with a rotating mechanism, the rotating mechanism is connected with the ball valve, and the rotating mechanism is used for driving the ball valve to rotate so as to enable the cut-off cock to work in a normal running state, an exhaust state and a test state; the ball valve is characterized in that a spherical sealing gasket, a copper gasket and a belleville spring are sequentially arranged on two sides of the ball valve, and the belleville spring is extruded after the valve cover is screwed into the valve body, so that the spherical sealing gasket is attached to the ball valve to realize sealing.
The ball valve is a ball valve with a side row.
The rotating mechanism comprises a rotating handle and a rotating rod, the rotating handle is fixed on the ball valve through the rotating rod, the fixing mode is that a self-locking nut is matched with a spring washer, and a rotating handle rubber sleeve is arranged on the rotating handle.
Be equipped with first O shape sealing washer and gasket between valve body and the swing arm, the gasket includes first gasket and second gasket, prevents effectively that dust or corrosive liquids from soaking the cock inside, increases the life who cuts the cock.
And a second O-shaped sealing ring is arranged between the spherical sealing gasket and the valve cover and between the spherical sealing gasket and the valve body, so that the sealing performance is improved.
The valve cover, the valve body, the rotary rod and the ball valve are made of brass materials, so that the overall corrosion resistance of the plug valve can be effectively improved while the weight of the plug valve is reduced.
The spherical sealing gasket is made of polytetrafluoroethylene, so that the problem of easy abrasion is effectively solved.
Various cock products can be realized by different assembly combination modes of the rotary handle, the rotary rod and the ball valve (with side rows), and the cock products comprise parallel opening or right-angle opening. As shown in fig. 2, when the exhaust direction of the exhaust port forms an angle of 0 ° or 180 ° with the rotating handle, the shutoff valve is in an open state. As shown in fig. 3, when the exhaust direction of the exhaust port forms an angle of 90 ° with the rotating handle, the shutoff valve is in an open state.
A vent hole and an exhaust hole are arranged in the ball valve, and the exhaust hole is communicated with the vent hole; the ball valve rotates until the vent hole, the air inlet and the air outlet are communicated, so that the normal operation state is realized; the ball valve rotates until the air inlet, the air outlet and the vent hole are communicated, and the vent hole is also communicated with the air outlet, so that the test state is realized; or the ball valve rotates until the air inlet, the air outlet and the vent hole are communicated, and the vent hole is also communicated with the exhaust port, so that the test state is realized; the ball valve rotates to the air outlet, the exhaust hole, the air vent and the exhaust port are communicated, and the exhaust state is achieved.
When the central axes of the rotary handle and the air inlet and outlet are in parallel, the air outlet and the air exhaust channel of the ball valve are communicated, and air exhaust at the air outlet end is realized.
When the central axes of the rotary handle and the air inlet and outlet are in a vertical position, the spherical sealing gaskets, the copper gaskets and the belleville springs are symmetrically arranged on two sides of the ball valve (with side rows), and after the valve cover is screwed into the valve body, the belleville springs are extruded to enable the spherical sealing gaskets to be attached to the ball valve, so that sealing is realized, the sealing effect is good, and the problem of poor metal sealing effect is effectively solved.
In the brake control device of the existing motor train unit train including the high and cold motor train unit train, a cut-off cock is arranged in an air loop of total wind pressure input, air spring pressure input, pre-control cavity pressure input and brake pressure output, and when the motor train unit train normally runs, the cut-off cock is in a closed position, so that air is prevented from leaking. When the air circuit of the brake control device carries out pressure acquisition, the corresponding circuit cut-off cock is in an opening position.
The sealing performance of the cut-off cock is improved by newly designing the sealing form of the cut-off cock, so that the cut-off function requirement of the air pipeline of the railway vehicle in the high and cold environment is met.
Claims (9)
1. A pipe-jointed type cutoff plug door for a railway vehicle, comprising: the valve body is provided with an air inlet, an air outlet and an air outlet, and an air passage is arranged between the air inlet and the air outlet; the air inlet and the air outlet are used for being connected with a brake pipeline; a ball valve is arranged in the air passage; the valve body is also provided with a rotating mechanism, the rotating mechanism is connected with the ball valve, and the rotating mechanism is used for driving the ball valve to rotate so as to enable the cut-off cock to work in a normal running state, an exhaust state and a test state; the ball valve is characterized in that a spherical sealing gasket, a copper gasket and a belleville spring are sequentially installed on two sides of the ball valve, and the belleville spring is extruded after the valve cover is screwed into the valve body, so that the spherical sealing gasket is attached to the ball valve to realize sealing.
2. A pipe-joint type intercept plug door for a railway vehicle according to claim 1, wherein said ball valve is a ball valve with a side row.
3. A pipe joint type intercept plug door for a railway vehicle according to claim 1 or 2, wherein said rotating mechanism comprises a rotary handle and a rotary rod, said rotary handle being fixed to the ball valve by means of the rotary rod.
4. A pipe joint type plug-off valve for railway vehicles according to claim 3, wherein a first O-ring and a gasket are provided between the valve body and the rotating rod.
5. A pipe joint type plug-off valve for railway vehicles according to claim 3, wherein a second O-ring is provided between the spherical packing and the valve cover and the valve body.
6. The pipe-jointed plug-off valve for railway vehicles according to claim 1, wherein the valve cover, the valve body, the rotary rod and the ball valve are made of brass.
7. A pipe-jointed plug-off valve for rail vehicles according to claim 1, wherein the spherical packing is made of teflon.
8. A pipe joint type intercept plug door for a railway vehicle according to claim 3, wherein said intercept plug door is opened in parallel or at right angle.
9. A pipe-jointed type cut-off plug door for a railway vehicle according to claim 2, wherein a vent hole and a vent hole are formed in the ball valve, and the vent hole is communicated with the vent hole; the ball valve rotates until the vent hole, the air inlet and the air outlet are communicated, so that the normal operation state is realized; the ball valve rotates until the air inlet, the air outlet and the vent hole are communicated, and the vent hole is also communicated with the air outlet, so that the test state is realized; or the ball valve rotates until the air inlet, the air outlet and the vent hole are communicated, and the vent hole is also communicated with the exhaust port, so that the test state is realized; the ball valve rotates to the air outlet, the exhaust hole, the air vent and the exhaust port are communicated, and the exhaust state is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122118853.3U CN215980922U (en) | 2021-09-03 | 2021-09-03 | Pipe joint type cut-off plug door for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122118853.3U CN215980922U (en) | 2021-09-03 | 2021-09-03 | Pipe joint type cut-off plug door for railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215980922U true CN215980922U (en) | 2022-03-08 |
Family
ID=80521615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122118853.3U Active CN215980922U (en) | 2021-09-03 | 2021-09-03 | Pipe joint type cut-off plug door for railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215980922U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114590235A (en) * | 2022-03-09 | 2022-06-07 | 眉山中车制动科技股份有限公司 | Self-exhaust angle cock |
| CN118564680A (en) * | 2024-06-22 | 2024-08-30 | 盐城市海通铁路配件有限公司 | A kind of angle plug door and its processing method |
-
2021
- 2021-09-03 CN CN202122118853.3U patent/CN215980922U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114590235A (en) * | 2022-03-09 | 2022-06-07 | 眉山中车制动科技股份有限公司 | Self-exhaust angle cock |
| CN114590235B (en) * | 2022-03-09 | 2023-09-26 | 眉山中车制动科技股份有限公司 | Self-exhausting angle cock |
| CN118564680A (en) * | 2024-06-22 | 2024-08-30 | 盐城市海通铁路配件有限公司 | A kind of angle plug door and its processing method |
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