CN2619138Y - Natural gas long distance transport pipeline and safety protector for city main line - Google Patents
Natural gas long distance transport pipeline and safety protector for city main line Download PDFInfo
- Publication number
- CN2619138Y CN2619138Y CN 03218806 CN03218806U CN2619138Y CN 2619138 Y CN2619138 Y CN 2619138Y CN 03218806 CN03218806 CN 03218806 CN 03218806 U CN03218806 U CN 03218806U CN 2619138 Y CN2619138 Y CN 2619138Y
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- China
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- shell
- core body
- protection device
- valve
- guiding valve
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Abstract
The utility model is a safety protection device of long transportation pipe of natural gas and urban trunk, which is characterized in that the device is comprises a shell 1, a core body with a check valve 2, a piston 3, an adjusting rod of air flow 4, an automatic control gas pipeline 5, a reduction spring 6 and a slide valve 7. Both ends of the shell 1 are connected to the transportation pipeline. The upper end of the core body with a check valve 2 is connected to the hollow piston 3. The under part of the adjusting rod of air flow 4 is connected to the adjusting rod of the core body with a check valve 2 of the protection device. The reduction spring 6 is connected to the slide valve 7. The slide valve 7 is provided in the shell 1. A cavity is arranged on the outer surface of the shell 1. Relief pressure hole A1, A2, B1 and B2 are provided on the shell 1. The automatic control gas pipeline 5 is connected to the relief pressure hole A1, A2, B1 and B2 respectively. The safety protection device of long transportation pipe of natural gas and urban trunk connected to the pipeline has the advantages of closing in time, cutting upstream and downstream gas source having accident when accident happens, using reliable and safely, simple system and low cost.
Description
Technical field: the utility model relates to safety protection device, particularly about the safety protection device of rock gas (coal gas) long distance pipeline and city main line.
Background technique: rock gas (coal gas) long distance pipeline and city main line carry for a long time presses in the running, because natural disaster or artificial origin, its accidental destruction accident of certain section may take place at any time, and because pipeline distance, and that this kind destruction often has is sudden, so be difficult in time find and take corresponding measure, not only causes a large amount of rock gases (coal gas) leakage loss, befouling environment, more existence and then initiation fire, blast etc. jeopardize the pernicious hidden danger of people's security of the lives and property.The method of taking wired or wireless electrical network complete monitoring abroad is feasible, but system complex, the cost height, and have the possibility of environmental influence, disturb wired electrical network interruption etc. such as wireless signal.
Summary of the invention: the purpose of this utility model provides a kind of Long-distance Transmission Pipeline and city main line safety protection device; it is connected on the pipeline; under the normal condition; rock gas (coal gas) is by the flow volume delivery of this device to set, and when above-mentioned contingency took place, it can in time be closed automatically; cut-out accident section upstream and downstream source of the gas; avoid a large amount of rock gases (coal gas) loss and more serious serious accident to take place, it is safe and reliable, and the simple cost of system is low.
The purpose of this utility model is achieved in that a kind of Long-distance Transmission Pipeline of design and city main line safety protection device, it is characterized in that: it is made up of core body 2, piston 3, throughput adjustable lever 4, automatic control tracheae line 5, Returnning spring 6 and the guiding valve 7 of shell 1, band safety check; The flange at shell 1 two ends is connected on the gas transmission line; core body 2 upper ends of band safety check link to each other with the piston 3 of hollow; throughput adjustable lever 4 bottoms are connected with the adjustable lever of the protector core body 2 of band safety check; Returnning spring 6 is connected with guiding valve 7; relief hole A1, A2, B1, B2 are arranged on the shell 1, and automatic control tracheae line 5 is communicated with relief hole A1 and A2 and B1 and B2 respectively.
Described guiding valve 7 is enclosed within the housing 1, and cavity is arranged on the outer surface.
Described relief hole B1, A1 are out that on the air inlet position of housing 1 B1 is communicated with at the corresponding position of guiding valve 7 cavitys and with guiding valve 7 cavitys, and A1 is out the corresponding position at the Returnning spring 6 that is connected with guiding valve 7; A2 is communicated with at the piston upper chamber position of housing 1, and B2 is communicated with the piston cavity of resorption position at housing 1.
The core body 2 of described band safety check is made up of shell, lining, spring, valve body, plug, adjustable lever and seal ring, between shell and the lining seal ring is arranged, valve body is in lining, spring one end is positioned on the valve plate of sleeve, the other end is supporting valve body top, there is through hole on valve body top and is hung with plug, and adjustable lever one end is connected with plug, and the other end stretches out outside the housing.
The utility model has the advantages that: 1, its system is simple, need not electrical network and other affiliated facilities; 2, reliable performance, the sorrow of no environment condition influence; 3, convenient management, the on duty and maintenance of the personnel that need not; 4, operation and operating cost are low.
Below in conjunction with accompanying drawing the utility model is described further.
Description of drawings: Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, shell; 2, the core body of band safety check; 3, piston; 4, throughput adjustable lever; 5, automatic control tracheae line; 6, Returnning spring; 7, guiding valve; Relief hole A1, A2, B1, B2.
Embodiment: as shown in Figure 1: the flange at shell of the present utility model 1 two ends is connected on the gas transmission line, the corresponding site of its left and right sides both ends of the surface and shell 1 sealing under the working state; Core body 2 upper ends of band safety check link to each other with the piston 3 of hollow, throughput adjustable lever 4 bottoms and the core body 2 of being with safety check adjustable lever be connected, and can in piston 3, freely rotate.Guiding valve 7 is enclosed within the housing 1, and can slide in housing 1, on guiding valve 7 outer surfaces cavity is arranged.Have relief hole B1, A1 on the air inlet position of housing 1, B1 opens and is being communicated with guiding valve 7 cavity corresponding positions and with guiding valve 7 cavitys, and A1 is out the corresponding position at the Returnning spring 6 that is connected with guiding valve 7; A2 is communicated with at the piston upper chamber position of housing 1, and B2 is communicated with the piston cavity of resorption position at housing 1.The inner chamber of guiding valve 7 guarantee when spherical pig by the time the two generation frictional force can make 6 slips of guiding valve 7 compression reseting springs.5 on automatic control tracheae line is communicated with relief hole A1 and A2 connection, B1 and the B2 that opens on the shell 1.The band safety check core body 2, employing be the safety protection device of patent No. ZL:01268078.8.
Working principle of the present utility model is as follows:
Under the normal condition, because piston 3 epicoele sectional areas are greater than the piston rod sectional area, under the effect of gas pressure, device is in this shown position in pipe.Rock gas (coal gas) with less than the maximum limit flow of setting (the maximum limit flow value can be set up by flow control rod 4) through safety protection device; The core body 2 of band safety check is carried, when the downstream line somewhere meet accident destroy a large amount of when losing heart, output terminal produces pressure drop, the flow of core body 2 of rock gas by the band safety check increases suddenly and produces very big pressure reduction, pressure reduction valve body is slided and pressure spring moment seat on the valve opening of lining, natural gas upstream is closed automatically, cut off the upstream source of the gas; And,, prevent down that faint breath refluxes then with the closure of check ring in the core body 2 of safety check if the pipe tear is positioned at the upstream of this device.During proper functioning, the conical ring passage that valve body and plug form can pass through to rotate adjustable lever and the stepless change channel cross-sectional area, realizes that stepless accent produces.So, the broken leakage loss that causes of pipe only limits to two pipeline sections between this device.When spherical pig passes through guiding valve 7 inner chambers; the two frictional force is ordered about guiding valve 7 pressure springs 6 right laterals; under this situation; the cavity of guiding valve 7 outer surfaces is communicated with A1, B1 mouth; piston 3 epicoele pressure releases, the core body 2 of gas pressure effect lower piston 3 driving belt safety check is up automatically in pipe, thereby after guaranteeing that spherical pig passes through; spring 6 drives guiding valve 7 and resets, and safety protection device recovers initial normal operating condition automatically.
Claims (4)
1, Long-distance Transmission Pipeline and city main line safety protection device is characterized in that: it is made up of core body 2, piston 3, throughput adjustable lever 4, automatic control tracheae line 5, Returnning spring 6 and the guiding valve 7 of shell 1, band safety check; The flange at shell 1 two ends is connected on the gas transmission line; core body 2 upper ends of band safety check link to each other with the piston 3 of hollow; throughput adjustable lever 4 bottoms are connected with the adjustable lever of the protector core body 2 of band safety check; Returnning spring 6 is connected with guiding valve 7; relief hole A1, A2, B1, B2 are arranged on the shell 1, and automatic control tracheae line 5 is communicated with relief hole A1 and A2 and B1 and B2 respectively.
2, Long-distance Transmission Pipeline according to claim 1 and city main line safety protection device, it is characterized in that: described guiding valve 7 is enclosed within the housing 1, and cavity is arranged on the outer surface.
3, Long-distance Transmission Pipeline according to claim 1 and city main line safety protection device, it is characterized in that: described relief hole B1, A1 are out on the air inlet position of housing 1, B1 is communicated with at the corresponding position of guiding valve 7 cavitys and with guiding valve 7 cavitys, and A1 is out the corresponding position at the Returnning spring 6 that is connected with guiding valve 7; A2 is communicated with at the piston upper chamber position of housing 1, and B2 is communicated with the piston cavity of resorption position at housing 1.
4, Long-distance Transmission Pipeline according to claim 1 and city main line safety protection device; it is characterized in that: the core body 2 of described band safety check is made up of shell, lining, spring, valve body, plug, adjustable lever and seal ring; between shell and the lining seal ring is arranged; valve body is in lining; spring one end is positioned on the valve plate of sleeve, and the other end is supporting valve body top, and there is through hole on valve body top and is hung with plug; adjustable lever one end is connected with plug, and the other end stretches out outside the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218806 CN2619138Y (en) | 2003-04-20 | 2003-04-20 | Natural gas long distance transport pipeline and safety protector for city main line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218806 CN2619138Y (en) | 2003-04-20 | 2003-04-20 | Natural gas long distance transport pipeline and safety protector for city main line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2619138Y true CN2619138Y (en) | 2004-06-02 |
Family
ID=34244030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03218806 Expired - Lifetime CN2619138Y (en) | 2003-04-20 | 2003-04-20 | Natural gas long distance transport pipeline and safety protector for city main line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2619138Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202258A (en) * | 2015-10-09 | 2015-12-30 | 上海力典电磁阀有限公司 | Rapid maintenance valve equipment applicable to long-distance control |
-
2003
- 2003-04-20 CN CN 03218806 patent/CN2619138Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202258A (en) * | 2015-10-09 | 2015-12-30 | 上海力典电磁阀有限公司 | Rapid maintenance valve equipment applicable to long-distance control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130420 Granted publication date: 20040602 |