CN201507788U - Self-operated control device of gas transmission pipeline - Google Patents
Self-operated control device of gas transmission pipeline Download PDFInfo
- Publication number
- CN201507788U CN201507788U CN2009203100913U CN200920310091U CN201507788U CN 201507788 U CN201507788 U CN 201507788U CN 2009203100913 U CN2009203100913 U CN 2009203100913U CN 200920310091 U CN200920310091 U CN 200920310091U CN 201507788 U CN201507788 U CN 201507788U
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- valve
- gas
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- self
- control valve
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Abstract
The utility model discloses a self-operated control device of a gas transmission pipeline, which comprises an upstream root valve, a downstream root valve, a water separator and a filter. A downstream filter is respectively connected with an upper cavity of a rear master control valve and a throttle valve, the throttle valve is connected with a rear correlation bottle, and a lower cavity of the master control valve is connected with the correlation bottle. An upstream filter is connected with a rear pressure-reducing valve, a high-pressure guiding valve, a low-pressure guiding valve and a gas port a of the master control valve, and the pressure-reducing valve is sequentially connected with a rear two-position three-way normally-open changeover valve and a cylinder. Working gas ports of the two guiding valves are respectively connected with a gas inlet of a rear shuttle valve, a gas outlet of the shuttle valve is respectively connected with a gas port b of the master control valve and a rear abnormal-moving pressure-reducing valve, the abnormal-moving pressure-reducing valve is sequentially connected with a rear two-position three-way normally-off changeover valve and a manual control valve, the manual control valve is respectively connected with a rear manual/automatic changeover valve and a gas inlet of the two-position three-way normally-open changeover valve, and the other end of the manual/automatic changeover valve is connected with the rear end of the pressure-reducing valve. The self-operated control device of the gas transmission pipeline has the advantages of simple structure, small size and comparatively low cost.
Description
Technical field
The utility model relates to a kind of control gear that is used for gas transmission line.
Background technique
Be widely used in the control gear of long gas transmission line at present, the gas-liquid linked actuating device that adopts, as shown in Figure 1, it comprises before the valve that is installed on the main valve 30 both sides gas transmission lines stop valve 32 behind the stop valve 31 and valve, two stop valves all with supporting separately water knockout drum 33 or 34, filter 35 or 36 connects successively, two filters 35 are connected with an import of pressure selector valve 37 respectively with 36 rear end, the F mouth of pressure selector valve 37 is connected with stop valve 38, stop valve 38 respectively with the throttle valve 39 at rear, the epicoele of main control valve 40 connects, throttle valve 39 is connected with the reference pot 41 at rear, the cavity of resorption of main control valve 40 links to each other with reference pot 41, the E mouth of pressure selector valve 37 respectively with a gas port of main control valve 40, energy storage canister 42 is connected with the suction port of switching control pilot 43, switching control pilot 43 two work gas ports respectively with supporting separately gas- liquid jar 44,45 connect, two ends as the oil cylinder 46 of actuator are connected with the other end of each self-corresponding gas- liquid jar 44 or 45 with stop valve 49 or 50 by hand pump 47 or 48 in parallel respectively, the b gas port of main control valve 40 is connected with the epicoele of switching control pilot 43, oil cylinder 46 inner carriers and shifting fork mechanism connect with main valve 30 on the gas transmission line, also are provided with debugging outlet valve 51 at the epicoele of main control valve 40; The working principle of this device is as follows:
(1) power operation
1. during power operation, close stop valve 38, ducted gas arrives pressure selector valves 37 through stop valve 31, water knockout drum 33, filter 35, enters power pipeline through the E mouth, arrives switching control pilot 43, and enters energy storage canister 42 pressure accumulations simultaneously; Open stop valve 38, ducted gas arrives pressure selector valve 37 through stop valve 32, water knockout drum 34, filter 36, also arrives the cavity of resorption and the reference pot 41 of main control valves 40 simultaneously through throttle valve 39 through the epicoele of F mouth, stop valve 38 arrival main control valves 40;
2. the handle of upwards mentioning switching control pilot 43, power gas source enters 44 superchargings of gas-liquid jar by switching control pilot 43, and gas pushes away liquid and reaches hand pump 47 bottoms and enter oil cylinder 46 by stop valve 49, promotes piston and shifting fork mechanism main valve 30 is opened; The oil return of oil cylinder 46 is got back to right side gas-liquid jar 45 through stop valve 50, and its upper gas enters atmosphere through switching control pilot 43;
3. when needs are closed main valve 30, the handle of depress switch control valve 43 then, power gas enters gas-liquid jar 45, gas pushes away liquid and reaches hand pump 48 bottoms and enter oil cylinder 46 by stop valve 50, promoting piston and shifting fork mechanism closes main valve 30, the oil return of oil cylinder 46 is got back to left side gas-liquid jar 44 through stop valve 49, and its upper gas enters atmosphere through switching control pilot 43;
When line pressure down will so that can not be as power source the time, then still can utilize the gas pressure of energy storage canister 42 that main valve 30 is carried out power operation 1～2 time.
(2) manually-operable
This device has hand pump 47 and 48, when the depleted of energy of air supply source interruption and energy storage canister 42 can not be used as power operation, does emergent manually-operable and uses when keeping in repair with stopping the supple of gas or steam with main valve.
1. manually opened valve: close stop valve 49 (power operation and the automatic closing operation of pipeline breaking valve should be opening state) earlier, lift hand pump 47 handles, liquid in the gas-liquid jar 44 is pressed into oil cylinder 46, main valve 30 is opened.
2. manual-lock valve: close stop valve 50 (power operation and the automatic closing operation of pipeline breaking valve should be opening state) earlier, lift hand pump 48 handles, liquid in the gas-liquid jar 45 is pressed into oil cylinder 46, main valve 30 is closed.
(3) pipeline breaking pipeline valve automatic emergency is closed
1. to realize that pressure drop rate formula pipeline breaking automatic emergency closes main valve 30, need carry out following preparation:
1) utilizes debugging outlet valve 51, do simulation pipeline breaking exhaust, close required pressure drop rate to main valve 30 by regulating outlet valve 51.Stop valve 38 should be closed when carrying out this adjusting.
2) stop valve 38 is opened.
2. when pipeline breaking, main control valve 40 upper cavity pressures will reduce and descend with line pressure, main control valve 40 cavity of resorptions are because throttle valve 39 stops reference pot 41 pressure to descend rapidly, on diaphragm, cavity of resorption forms pressure reduction, the promotion diaphragm moves up, gas enters main control valve 40 in the reference pot 41, open bottom piston, power gas source comes out reach switching control pilot 43 upper ends by main control valve 40 from the b mouth by a mouth, open the lower end, and the gas in the energy storage canister 42 enters right side gas-liquid jar 45, and gas pushes away liquid and reaches hand pump 48 bottoms and enter oil cylinder 46 by stop valve 50, promote piston and shifting fork mechanism and make main valve 30 actions, close main valve 30.
From said process as can be seen; this device is just when pipeline burst; can close main valve 30 automatically, prevent the rock gas accidents such as causing fire that leaks in a large number, but the air pressure in pipeline is when producing fluctuation; do not have superpressure and close the function that storage is pressed with low pressure; to pipeline self unprotect function, and owing to use more energy storage canister, gas-liquid jar, hand pump etc., complex structure; volume is big, and cost is higher and safeguard inconvenient.
The model utility content
The purpose of this utility model is the above-mentioned deficiency at prior art; a kind of self-powering type control gear of gas transmission line is provided; it utilizes the pressure of pipeline self; not only when pipeline burst; can close main valve automatically; and the air pressure in the pipeline can provide protective function to pipeline self, and have advantage simple in structure, that volume is little, cost is lower, easy to maintenance when producing fluctuation.
For achieving the above object, the self-powering type control gear of gas transmission line of the present utility model, comprise preceding root valve of the valve that is installed on the gas transmission line of main valve both sides and valve back root part valve, two root valves all are connected successively with supporting separately water knockout drum, filter, it is characterized in that: the valve after-filter links to each other with epicoele, the throttle valve of the main control valve at rear respectively, throttle valve is connected with the contrast jar at rear, and the cavity of resorption of main control valve links to each other with the contrast jar; The valve front filter is connected with a gas port of reduction valve, high pressure pilot valve, low pressure pilot and the main control valve at rear respectively, and reduction valve is connected successively with two-position three way normal opened type selector valve, the cylinder at rear, and the executive component of cylinder connects with main valve; The work gas port of high pressure pilot valve and low pressure pilot is connected with each self-corresponding suction port of rear shuttle valve respectively, the air outlet of shuttle valve is connected with the b gas port of main control valve, the unusual fluctuation reduction valve at rear respectively, the unusual fluctuation reduction valve is connected successively with two-position three way often-cutting type selector valve, the hand control valve at rear, hand control valve is connected with the manual switching valve at rear, the suction port of two-position three way normal opened type selector valve respectively, and the other end of manual switching valve is connected with the rear end of reduction valve.
This device can be realized manually-operable and the conversion of operation automatically by operator brake control valve and manual switching valve; When the air pressure in the pipeline produces fluctuation, by the conducting of high pressure pilot valve or low pressure pilot, drive each valve event of rear, by cylinder control main valve, provide protective function at last to pipeline self; When pipeline burst, can close main valve automatically again;
As further improvement of the utility model, also be provided with the debugging outlet valve at the epicoele of main control valve; Utilize the debugging outlet valve, can simulate the pipeline breaking exhaust, determine that by regulating outlet valve main valve closes required pressure drop rate;
As further improvement of the utility model, on the piston rod of cylinder, adjusting handle is housed; When source of the gas interrupts operating automatically, do to use when emergent manually-operable and valve are stopped the supple of gas or steam maintenance;
As further improvement of the utility model, on the pipeline at reduction valve and unusual fluctuation reduction valve rear, be equipped with safety valve; Can avoid overpressure, damage the parts at rear;
As further improvement of the utility model, be equipped with pressure gauge in the upper and lower chamber of main control valve; Be convenient to observe the pressure of main control valve;
In sum, the utility model can provide protective function to pipeline self, and has cancelled large components such as original energy storage canister, gas-liquid jar, hand pump, has advantage simple in structure, that volume is little, cost is lower, easy to maintenance.
Description of drawings
Fig. 1 is the structure principle chart of original gas-liquid linked actuating device.
Fig. 2 is the structure principle chart of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
By shown in Figure 2, the self-powering type control gear of this gas transmission line, comprise preceding root valve 1 of the valve that is installed on the main valve 18 both sides gas transmission lines and valve back root part valve 17, two root valves 1 all are connected with supporting separately water knockout drum 23 or 24, filter 2 or 16 successively with 17, valve after-filter 16 links to each other with epicoele, the throttle valve 13 of the main control valve 15 at rear respectively, throttle valve 13 is connected with the contrast jar 14 at rear, the cavity of resorption of main control valve 15 links to each other with contrast jar 14, epicoele at main control valve 15 also is provided with debugging outlet valve 12, is equipped with pressure gauge 19 or 20 in the upper and lower chamber of main control valve 15; Valve front filter 2 is connected with a gas port of reduction valve 4, high pressure pilot valve 3, low pressure pilot 11 and the main control valve 15 at rear respectively, reduction valve 4 is connected successively with two-position three way normal opened type selector valve 5, the cylinder 25 at rear, adjusting handle 26 is housed on the piston rod of cylinder 25, and the executive component of cylinder 25 connects with main valve 18; The work gas port of high pressure pilot valve 3 and low pressure pilot 11 is connected with each self-corresponding suction port of rear shuttle valve 10 respectively, the air outlet of shuttle valve 10 respectively with the b gas port of main control valve 15, the unusual fluctuation reduction valve 9 at rear connects respectively, the two-position three way often-cutting type selector valve 8 at unusual fluctuation reduction valve 9 and rear, hand control valve 7 connects successively, hand control valve 7 respectively with the manual switching valve 6 at rear, the suction port of two-position three way normal opened type selector valve 5 connects, the other end of manual switching valve 6 is connected with the rear end of reduction valve 4, is equipped with safety valve 21 or 22 on the pipeline at reduction valve 4 and unusual fluctuation reduction valve 9 rears.
Working principle of the present utility model is as follows:
(1) the interior gas pressure of pipeline is in normal range (NR)
1. operation automatically: hand control valve 7 is opened, manual switching valve 6 cuts out, ducted gas root valve 1 before valve enters water knockout drum 23, filter 2, enter reduction valve 4 (arriving a mouth of main control valve 15 simultaneously) again, enter cylinder 25 through two-position three way normal opened type selector valve 5, promote piston, main valve 18 is opened, subsequently, ducted gas enters water knockout drum 24 through valve back root part valve 17, filter 16 enters main control valve 15 epicoeles again, and enters main control valve 15 cavity of resorptions and contrast jar 14 through throttle valve 13, because on the main control valve 15, following cavity pressure is identical, so main control valve 15 is failure to actuate; When line pressure surpassed the maximum pressure of setting, high pressure pilot valve 3 was opened, and gas arrives unusual fluctuation reduction valve 9 through shuttle valve 10, post-decompression gas closes two-position three way normal opened type selector valve 5 through two-position three way often-cutting type selector valve 8 and hand control valve 7, gas emptying in the cylinder 25, piston reset is closed main valve 18, the protection downstream line, preventing that pipeline from boosting causes the accident of booster, and when pipeline pressure dropped to setting value, device restored, main valve 18 is opened, the downstream transport medium; When line pressure is lower than the minimum pressure of setting, low pressure pilot 11 is opened, and to unusual fluctuation reduction valve 9, post-decompression gas closes two-position three way normal opened type selector valve 5 through two-position three way often-cutting type selector valve 8 and hand control valve 7 to gas through shuttle valve 10, gas emptying in the cylinder 25, piston reset is closed main valve 18, and device is in closed condition, upstream line has the storage compression functions, when upstream line pressure surpassed minimum setting value, device started, and opens main valve 18 downstream transport media; With debugging outlet valve 12, can simulate the pipeline breaking exhaust, close required pressure drop rate by regulating outlet valve 12 definite main valves 18;
2. manually-operable: in the time of need closing main valve 18, then hand control valve 7 cuts out, manual switching valve 6 is opened, post-decompression gas enters two-position three way normal opened type selector valve 5 through manual/automatic transfer valve 6, its commutation is closed, can realize manual-lock main valve 18; Hand control valve 7, manual switching valve 6 are resetted, then can realize manual unlocking main valve 18;
(2) broken pipe starts
At automatic serviceability, when downstream tube is pointed out frankly when splitting, after pressure drop rate reaches setting value, main control valve 15 upper cavity pressures descend rapidly, because the damping function of throttle valve 13, contrast jar 14 interior gas pressures slowly descend, 15 times cavity pressures of main control valve are higher than upper cavity pressure, its piston moves upward, gas enters the b mouth by a mouth of main control valve 15 in the pipeline, and gas enters unusual fluctuation reduction valve 9, two-position three way often-cutting type selector valve 8, hand control valve 7 again closes two-position three way normal opened type selector valve 5, the gas emptying in the cylinder 25, piston reset is closed main valve 18; Because contrast jar 14 volumes are limited, for preventing that jar interior gas from exhausting, the broken timely cut-off valve back root part of Guan Houying valve 17, hand control valve 7 cuts out, and manual switching valve 6 opened, treat again manual switching valve 6 to cut out after the downstream line reparation, main valve 18 is opened, open valve back root part valve 17, wait for 15 two pressure gauges 19 of main control valve, (main control valve 15 exhaust ports did not have the gas discharge after the pressure balance, do not have balance as pressure after 20 pressure reached balance, the pressure of contrast jar 14 is higher than pipeline pressure, then main control valve 15 meetings are from the pressure relief opening exhaust), open hand control valve 7 again, whole device enters automatic control state.
When source of the gas interrupts operating automatically, rotate counterclockwise handwheel 26, the handwheel 26 that stops operating after main valve 18 is opened and put in place after the normal or maintenance of source of the gas finishes, must clockwise rotate handwheel 26, makes the position before main valve 18 returns to manually-operable; Can implement emergent manually-operable maintenance work when stopping the supple of gas or steam with valve.The utility model can provide protective function to pipeline self, and has cancelled large components such as original energy storage canister, gas-liquid jar, hand pump, has advantage simple in structure, that volume is little, cost is lower, easy to maintenance.
Claims (5)
1. the self-powering type control gear of a gas transmission line, comprise preceding root valve of the valve that is installed on the gas transmission line of main valve both sides and valve back root part valve, two root valves all are connected successively with supporting separately water knockout drum, filter, it is characterized in that: the valve after-filter links to each other with epicoele, the throttle valve of the main control valve at rear respectively, throttle valve is connected with the contrast jar at rear, and the cavity of resorption of main control valve links to each other with the contrast jar; The valve front filter is connected with a gas port of reduction valve, high pressure pilot valve, low pressure pilot and the main control valve at rear respectively, and reduction valve is connected successively with two-position three way normal opened type selector valve, the cylinder at rear; The work gas port of high pressure pilot valve and low pressure pilot is connected with each self-corresponding suction port of rear shuttle valve respectively, the air outlet of shuttle valve is connected with the b gas port of main control valve, the unusual fluctuation reduction valve at rear respectively, the unusual fluctuation reduction valve is connected successively with two-position three way often-cutting type selector valve, the hand control valve at rear, hand control valve is connected with the manual switching valve at rear, the suction port of two-position three way normal opened type selector valve respectively, and the other end of manual switching valve is connected with the rear end of reduction valve.
2. the self-powering type control gear of gas transmission line as claimed in claim 1 is characterized in that also being provided with the debugging outlet valve at the epicoele of main control valve.
3. the self-powering type control gear of gas transmission line as claimed in claim 1 or 2 is characterized in that on the piston rod of cylinder adjusting handle being housed.
4. as the self-powering type control gear of gas transmission line as described in the claim 3, it is characterized in that on the pipeline at reduction valve and unusual fluctuation reduction valve rear, being equipped with safety valve.
5. as the self-powering type control gear of gas transmission line as described in the claim 4, it is characterized in that being equipped with pressure gauge in the upper and lower chamber of main control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203100913U CN201507788U (en) | 2009-09-10 | 2009-09-10 | Self-operated control device of gas transmission pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203100913U CN201507788U (en) | 2009-09-10 | 2009-09-10 | Self-operated control device of gas transmission pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507788U true CN201507788U (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203100913U Expired - Lifetime CN201507788U (en) | 2009-09-10 | 2009-09-10 | Self-operated control device of gas transmission pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649959B (en) * | 2009-09-10 | 2012-07-04 | 自贡武进机器制造有限公司 | Self-operated control system of gas transmission pipeline |
-
2009
- 2009-09-10 CN CN2009203100913U patent/CN201507788U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649959B (en) * | 2009-09-10 | 2012-07-04 | 自贡武进机器制造有限公司 | Self-operated control system of gas transmission pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZIGONG WUJIN MACHINERY MANUFACTURING CO., LTD. Free format text: FORMER OWNER: ZIGONG NUOKO ACTUATOR MFG. CO., LTD. Effective date: 20110909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110909 Address after: 643012 Room 201, hatch building, Zigong, Sichuan Province Patentee after: Zigong Nuoko Actuator MFG. Co., Ltd. Address before: Daan District Lianggaoshan Li Road 643012 Sichuan city of Zigong province No. 30 Patentee before: Zigong Nuoko Actuator MFG. Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20100616 Effective date of abandoning: 20090910 |