CN212480142U - Stop valve for natural gas pipeline with anti-drop mechanism - Google Patents
Stop valve for natural gas pipeline with anti-drop mechanism Download PDFInfo
- Publication number
- CN212480142U CN212480142U CN202021267465.0U CN202021267465U CN212480142U CN 212480142 U CN212480142 U CN 212480142U CN 202021267465 U CN202021267465 U CN 202021267465U CN 212480142 U CN212480142 U CN 212480142U
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- Prior art keywords
- natural gas
- valve
- gas pipeline
- sleeve
- layer
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 239000003345 natural gas Substances 0.000 title claims abstract description 76
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000012856 packing Methods 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 41
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model discloses a stop valve for natural gas line with anti-drop mechanism, including valve body, valve gap, valve rod, valve clack, pneumatic cylinder and fixed station, pneumatic cylinder fixed connection is on the fixed station, the inside through-hole that is equipped with of fixed station, and the upper end of valve rod runs through the flexible fixed connection of through-hole and pneumatic cylinder, the both ends integrated into one piece of valve gap is equipped with the second sleeve, be equipped with the packing sealing washer between valve rod and the valve gap, the first seal gasket of valve clack upper surface agrees with mutually with the trapezoidal inner wall of valve gap, the inboard threaded connection in second sleeve both ends all is equipped with first sleeve, first telescopic inboard and first natural gas line are connected with the outside of second natural gas line. The hydraulic cylinder drives the valve rod to move up and down to enable the valve to be unblocked or blocked, and the structure is simple and the sealing performance is good; through the anti-drop structure of being connected between first sleeve and the second sleeve, the gas tightness of reinforcing natural gas line prevents that natural gas from leaking.
Description
Technical Field
The utility model relates to a natural gas line engineering correlation field specifically is a stop valve for natural gas line with anti-drop mechanism.
Background
The natural gas pipeline refers to a pipeline for conveying natural gas from a mining place or a processing plant to a city gas distribution center or an industrial enterprise user, and is also called a gas transmission pipeline. The natural gas pipeline is used for conveying natural gas, and is a way for conveying a large amount of natural gas on land. Natural gas pipelines account for about half of the total pipeline length in the world. Valves are plumbing fixtures used to open and close piping, control flow direction, regulate and control the temperature, pressure and flow of the transport medium. The stop valve is a forced sealing type valve, and when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak.
The stop valve in the prior art is generally operated manually, the operation is very labor-consuming, the efficiency is not high, and the valve rod is easy to damage by manual operation; in addition, the natural gas pipeline has great harmfulness and wide spread when an accident occurs. Once the pipeline is broken, the released energy is large, the tearing length is long, and the discharged natural gas meets open fire and is easy to cause fire. Therefore the utility model provides a stop valve for natural gas line with anti-drop mechanism is used for solving above-mentioned problem, is applicable to laying of natural gas line under the adverse circumstances generally.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a stop valve for natural gas line with anti-drop mechanism to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a stop valve with an anti-drop mechanism for a natural gas pipeline comprises a valve body, a valve cover, a valve rod, a valve clack, a hydraulic cylinder and a fixed platform, wherein the hydraulic cylinder is fixedly connected to the fixed platform, the fixed platform is installed on a support, a through hole is formed in the fixed platform, the upper end of the valve rod penetrates through the through hole and is fixedly connected with the telescopic end of the hydraulic cylinder, the lower end of the valve rod is fixedly connected with the valve clack, a first sealing gasket is arranged on the upper surface of the valve clack, a second sealing gasket is arranged on the lower surface of the valve clack, a packing sealing ring is arranged between the valve rod and the valve cover, the first sealing gasket on the upper surface of the valve clack is matched with the trapezoidal inner wall of the valve cover, one corners of the left end and the right end of the valve cover are welded and stretched into the valve body, second sleeves are integrally formed at the two ends of the valve cover, all be equipped with first sealing washer between first natural gas pipeline and second natural gas pipeline and the first sleeve, all be equipped with the second sealing washer between first sleeve and the second sleeve, the outside of first natural gas pipeline and second natural gas pipeline is equipped with the flame retardant coating, the inside heat preservation that is equipped with of flame retardant coating, first natural gas pipeline and second natural gas pipeline inner wall all electroplate galvanized coating.
Preferably, the left end and the right end of the valve cover are in threaded connection with bolts, and the bolts are fixedly connected with nuts.
Preferably, the first sealing ring and the second sealing ring are both of a double-layer structure and are sequentially provided with a polytetrafluoroethylene layer and a soft rubber layer from inside to outside.
Preferably, the fireproof layer is of a three-layer structure and sequentially comprises a chlorinated rubber layer, a paraffin layer and a solvent type coating layer from inside to outside.
Preferably, the heat-insulating layer is of a double-layer structure and sequentially comprises an asbestos layer and a vacuum layer from inside to outside.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the telescopic end of the hydraulic cylinder is fixedly connected with the upper end of the valve rod penetrating through the through hole to drive the valve rod to move up and down, when the valve rod moves down, a closed structure is formed between the valve clack and the valve body to prevent natural gas from flowing, and the second sealing gasket prevents natural gas from flowing and enhances air tightness; when the valve rod moves upwards, the valve is opened, natural gas in the pipeline forms a circulation state, the first sealing gasket on the upper surface of the valve clack is matched with the trapezoidal inner wall of the valve cover, natural gas is prevented from leaking from the upper end of the valve cover, a packing sealing ring is arranged between the valve rod and the valve cover, the secondary leakage prevention effect can be achieved, and the stop valve is simple in structure and not prone to being corroded by a medium.
2. Both ends integrated into one piece through the valve gap is equipped with the second sleeve, and the inboard threaded connection of second sleeve has first sleeve, prevents droing between pipeline and the pipeline, and all is equipped with first sealing washer between first natural gas pipeline and second natural gas pipeline and the first sleeve, all is equipped with the second sealing washer between first sleeve and the second sleeve, prevents leaking of natural gas, strengthens natural gas pipeline's gas tightness, ensures the safe handling of natural gas.
Drawings
FIG. 1 is a schematic structural view of the stop valve of the natural gas pipeline of the present invention;
fig. 2 is a side view of the anti-falling structure of the present invention.
In the figure: a valve body 1; a valve cover 2; a valve stem 3; a valve flap 4; a hydraulic cylinder 5; a bracket 6; a first sealing gasket 7; a second sealing gasket 8; a bolt 9; a nut 10; a first natural gas pipeline 11; a second natural gas pipeline 12; a first seal ring 13; a first sleeve 14; a second sleeve 15; a second seal ring 16; a packing seal ring 17; a fire-resistant layer 18; an insulating layer 19; a zinc coating layer 20; a fixed table 21; a through hole 22.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution: a stop valve with an anti-drop mechanism for a natural gas pipeline comprises a valve body 1, a valve cover 2, a valve rod 3, a valve clack 4, a hydraulic cylinder 5 and a fixed platform 21, wherein the hydraulic cylinder 5 is fixedly connected on the fixed platform 21, the fixed platform 21 is installed on a support 6, a through hole 22 is formed in the fixed platform 21, the upper end of the valve rod 3 penetrates through the through hole 22 and is fixedly connected with the telescopic end of the hydraulic cylinder 5, the lower end of the valve rod 3 is fixedly connected with the valve clack 4, a first sealing gasket 7 is arranged on the upper surface of the valve clack 4, a second sealing gasket 8 is arranged on the lower surface of the valve clack 4, a packing sealing ring 17 is arranged between the valve rod 3 and the valve cover 2, the first sealing gasket 7 on the upper surface of the valve clack 4 is matched with the inner trapezoidal wall of the valve cover 2, one corners of the left end and the right, the inner side of the first sleeve 14 is connected with the outer sides of the first natural gas pipeline 11 and the second natural gas pipeline 12, first sealing rings 13 are arranged between the first natural gas pipeline 11 and the first sleeve 14 and between the second natural gas pipeline 12 and the first sleeve 14, second sealing rings 16 are arranged between the first sleeve 14 and the second sleeve 15, fire-proof layers 18 are arranged on the outer sides of the first natural gas pipeline 11 and the second natural gas pipeline 12, heat-insulating layers 19 are arranged inside the fire-proof layers 18, and zinc-plated layers 20 are electroplated on the inner walls of the first natural gas pipeline 11 and the second natural gas pipeline 12.
Furthermore, bolts 9 are arranged at the left end and the right end of the valve cover 2 in a threaded connection mode, and nuts 10 are fixedly connected to the bolts 9, so that the valve cover 2 is stably fixed on the valve body 1.
Further, the first sealing ring 13 and the second sealing ring 16 are both of a double-layer structure, and are sequentially a polytetrafluoroethylene layer and a soft rubber layer from inside to outside.
Further, the fireproof layer 18 is a three-layer structure, and comprises a chlorinated rubber layer, a paraffin layer and a solvent-based coating layer from inside to outside in sequence.
Furthermore, the heat-insulating layer 19 is of a double-layer structure and sequentially comprises an asbestos layer and a vacuum layer from inside to outside, so that the heat-insulating effect is achieved, and the heat-insulating layer also has certain flame retardant capability.
The working principle is as follows: when the valve rod 3 moves downwards, a closed structure is formed between the valve clack 4 and the valve body 1 to prevent natural gas from flowing, and the second sealing gasket 8 prevents natural gas from flowing and enhances air tightness; when the valve rod 3 moves upwards, the valve is opened, natural gas in the pipeline forms a circulation state, the first sealing gasket 7 on the upper surface of the valve clack 4 is matched with the trapezoidal inner wall of the valve cover 2 at the moment, natural gas is prevented from being leaked from the upper end of the valve cover 2, and the packing sealing ring 17 is arranged between the valve rod 3 and the valve cover 2, so that the secondary leakage prevention effect can be achieved. One corner of the left end and the right end of the valve cover 2 is welded and extends into the valve body 1 to well play a role in sealing, the first sleeve 14 and the second sleeve 15 are mutually stressed through threads, and the valve cover 2 and the second sleeve 15 are of an integrally formed structure, so that the first natural gas pipeline 11 and the second natural gas pipeline 12 are stably connected, and the natural gas pipelines are prevented from falling off; first sealing rings 13 are arranged between the first natural gas pipeline 11 and the first sleeve 14, and second sealing rings 16 are arranged between the first sleeve 14 and the second sleeve 15, so that leakage of natural gas is prevented, and the air tightness of the natural gas pipeline is enhanced. The insulating layer 19 can resist high temperature outside, and can ensure stable temperature inside the first natural gas pipeline 11 and the second natural gas pipeline 12.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a stop valve for natural gas line with anti-drop mechanism, includes valve body (1), valve gap (2), valve rod (3), valve clack (4), pneumatic cylinder (5) and fixed station (21), its characterized in that: the hydraulic cylinder (5) is fixedly connected to a fixed platform (21), the fixed platform (21) is installed on a support (6), a through hole (22) is formed in the fixed platform (21), the upper end of a valve rod (3) penetrates through the through hole (22) and is fixedly connected with the telescopic end of the hydraulic cylinder (5), a valve clack (4) is fixedly connected to the lower end of the valve rod (3), a first sealing gasket (7) is arranged on the upper surface of the valve clack (4), a second sealing gasket (8) is arranged on the lower surface of the valve clack (4), a packing sealing ring (17) is arranged between the valve rod (3) and a valve cover (2), the first sealing gasket (7) on the upper surface of the valve clack (4) is matched with the inner wall of the trapezoid of the valve cover (2), one corner of the left end and the right end of the valve cover (2) is welded to extend into the valve body (1), and second sleeves (15, the utility model discloses a fire-proof coating for natural gas pipeline, including first sleeve (14), first natural gas pipeline (11), second natural gas pipeline (12), first sleeve (15) inboard threaded connection has first sleeve (14), the inboard of first sleeve (14) all is connected with the outside of first natural gas pipeline (11) and second natural gas pipeline (12), all be equipped with first sealing washer (13) between first natural gas pipeline (11) and second natural gas pipeline (12) and first sleeve (14), all be equipped with second sealing washer (16) between first sleeve (14) and second sleeve (15), the outside of first natural gas pipeline (11) and second natural gas pipeline (12) is equipped with flame retardant coating (18), flame retardant coating (18) inside is equipped with heat preservation (19), first natural gas pipeline (11) and second natural gas pipeline (12) inner wall all electroplate has galvanized coating (20).
2. The stop valve with the anti-falling mechanism for the natural gas pipeline as claimed in claim 1, wherein bolts (9) are connected to the left and right ends of the valve cover (2) in a threaded manner, and nuts (10) are fixedly connected to the bolts (9).
3. The stop valve for a natural gas pipeline with an anti-drop mechanism according to claim 1, characterized in that: the first sealing ring (13) and the second sealing ring (16) are both of a double-layer structure and are sequentially provided with a polytetrafluoroethylene layer and a soft rubber layer from inside to outside.
4. The stop valve for a natural gas pipeline with an anti-drop mechanism according to claim 1, characterized in that: the fireproof layer (18) is of a three-layer structure and sequentially comprises a chlorinated rubber layer, a paraffin layer and a solvent type coating layer from inside to outside.
5. The stop valve for a natural gas pipeline with an anti-drop mechanism according to claim 1, characterized in that: the heat-insulating layer (19) is of a double-layer structure and sequentially comprises an asbestos layer and a vacuum layer from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021267465.0U CN212480142U (en) | 2020-07-01 | 2020-07-01 | Stop valve for natural gas pipeline with anti-drop mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021267465.0U CN212480142U (en) | 2020-07-01 | 2020-07-01 | Stop valve for natural gas pipeline with anti-drop mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212480142U true CN212480142U (en) | 2021-02-05 |
Family
ID=74455698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021267465.0U Expired - Fee Related CN212480142U (en) | 2020-07-01 | 2020-07-01 | Stop valve for natural gas pipeline with anti-drop mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212480142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915443A (en) * | 2021-02-26 | 2021-06-08 | 杨育海 | Intelligent fire protection device |
-
2020
- 2020-07-01 CN CN202021267465.0U patent/CN212480142U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915443A (en) * | 2021-02-26 | 2021-06-08 | 杨育海 | Intelligent fire protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210205 |