CN205618993U - Liquefied natural gas pressure regulating system - Google Patents
Liquefied natural gas pressure regulating system Download PDFInfo
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- CN205618993U CN205618993U CN201620245892.6U CN201620245892U CN205618993U CN 205618993 U CN205618993 U CN 205618993U CN 201620245892 U CN201620245892 U CN 201620245892U CN 205618993 U CN205618993 U CN 205618993U
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- pressure sensor
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Abstract
The utility model discloses a liquefied natural gas pressure regulating system, including be responsible for, branch pipe no. 1, branch pipe no. 2 and branch pipe no. 3, be responsible for to divide to be equipped with branch pipe no. 1, branch pipe no. 2, the person in charge's branch point anterior segment is equipped with first relief valve, first manometer in proper order, be equipped with first butterfly valve, filter, flowmeter, second butterfly valve, second manometer, third butterfly valve, voltage regulator, second relief valve, third manometer and fourth butterfly valve on branch pipe no. 1 and the branch pipe no. 2 respectively in proper order, branch pipe no. 1 and branch pipe no. 2 join mutually to the back end of being responsible for on, are equipped with the fourth manometer on the person in charge's the back end, be equipped with the branch pipe of being connected with branch pipe no. 2 no. 3 on the branch pipe no. 1, the both ends of branch pipe no. 3 are connected respectively between the second manometer and third butterfly valve on branch pipe no. 1, branch pipe no. 2. The utility model discloses a technique aim at provides safer, as can to distinguish the pressure release to a voltage regulator from beginning to end liquefied natural gas pressure regulating system, and this kind of pressure regulating system is more reliable.
Description
Technical field
The utility model relates to liquefied natural gas facility, particularly a kind of liquefied natural gas voltage-regulating system.
Background technology
LNG because pipe-line system pressure raises, is very easy to security incident, it is therefore necessary to use the upper pressure limit in the method control piping system of release gas in Gas transmission project.Usual way is to arrange Safety relief valve on air delivering pipeline, and when manifold pressure rises higher than setting value, Safety relief valve is just slowly opened, and releases gas in pipelines, and when pressure rolls back below setting value, Safety relief valve is automatically switched off.But, for voltage-regulating system, come before pressure regulation with pressure regulation after pressure reduction in pipeline relatively big, therefore, the security of traditional single releasing device is not high, is prone to accidents.
Utility model content
The deficiency existing for above-mentioned liquefied natural gas voltage-regulating system, technical purpose of the present utility model be to provide a kind of safer, can be to the liquefied natural gas voltage-regulating system of pressure release respectively before and after pressure regulator, this voltage-regulating system is relatively reliable.
The utility model is achieved through the following technical solutions:
A kind of liquefied natural gas voltage-regulating system, including supervisor, arm the first, arm two and arm three, described supervisor is arranged with arm the first, arm two, the branch point leading portion of supervisor is sequentially provided with the first safety valve, the first Pressure gauge, described arm one is sequentially provided with the first butterfly valve, filter, flowmeter, the second butterfly valve, the second Pressure gauge, the 3rd butterfly valve, pressure regulator, the second safety valve, the 3rd Pressure gauge and the 4th butterfly valve on arm two respectively, described arm one and arm two converge to mutually on the back segment of supervisor, and the back segment of supervisor is provided with the 4th Pressure gauge；Described arm one is provided with the arm three being connected with arm two, and the two ends of arm three are connected between the second Pressure gauge on arm the first, arm two and the 3rd butterfly valve.
In technique scheme, by being designed with safety valve before and after pressure regulator so that when pressure regulator air inlet pipe is excessive with the pressure in escape pipe, row pressure can be carried out to pipeline so that the voltage-regulating system of liquefied natural gas is more safe and reliable；This voltage-regulating system also has the medium type of flow, pressure regulation conveying can be carried out by arm the first, arm two respectively, worked in coordination by arm three also by arm the first, arm two and pressure regulation conveying is carried out to medium, when making the equipment in arm one/arm two have partial destruction, voltage-regulating system also can normally work.
Further, it is provided with pressure sensor A between described 3rd butterfly valve and pressure regulator, it is provided with pressure sensor B between pressure regulator and the 3rd Pressure gauge, described pressure sensor A is connected with MCU with pressure sensor B, described first safety valve and the second safety valve are provided with controller, and described controller is connected with MCU.
nullIn technique scheme，When safety valve can not the pressure in pipeline exceed design pressure when row pressure is carried out to pipeline，The pressure that can be detected respectively before and after pressure regulator in pipeline by the pressure sensor A that is provided with and pressure sensor B，And pressure sensor A and pressure sensor B can send measured pressure signal to MCU in real time，After MCU receives the pressure signal that pressure sensor A and pressure sensor B sends，Judgement is compared to the pressure recording，If the setup pressure value exceeding in pipeline，MCU sends, to the controller on the safety valve in respective line, the signal opened，After controller receives opening signal, control safety valve is opened and is carried out row pressure，When the pressure in pipeline is less than design pressure value，MCU sends the signal name closed to corresponding controllers，So that controller control safety valve cuts out，Thus reach to protect the purpose of voltage-regulating system.
Further, described flow is calculated as Intelligent target formula flowmeter, and the material of described intelligence target type meter is austenitic cryogenic steel/Hastelloy.
In technique scheme, by flowmeter is set to intelligence target type meter, intelligence target type meter uses the on-the-spot display of double liquid crystal, have that mechanism is compact, reading is visual and clear, reliability is high, by obvious advantages such as extraneous power supply disturbance, anti-lightning, low costs, austenitic cryogenic steel and Hastelloy can bear low temperature, intelligence target type meter can normally be worked, and keep precision.
Further, described pressure sensor A and pressure sensor B is ultralow temperature pressure sensor, and ultralow temperature pressure sensor is piezoresistive pressure sensor.
In technique scheme, it is ultralow temperature pressure sensor by pressure sensor A and pressure sensor B, make the pressure sensor A and pressure sensor B can certainty of measurement at low temperatures, piezoresistive pressure sensor frequency effect is high, volume is little, little power consumption, highly sensitive, precision good, can measure the accuracy of 0.1%.
Further, described arm the first, arm two and arm three are seamless steel pipe.
In technique scheme, by arm the first, arm two and arm three are set to seamless steel pipe so that pipeline is more reliable, more robust, it is to avoid reveal.
The beneficial effects of the utility model are:
1st, by being designed with safety valve before and after pressure regulator so that when pressure regulator air inlet pipe is excessive with the pressure in escape pipe, row pressure can be carried out to pipeline so that the voltage-regulating system of liquefied natural gas is more safe and reliable；This voltage-regulating system also has the medium type of flow, pressure regulation conveying can be carried out by arm the first, arm two respectively, worked in coordination by arm three also by arm the first, arm two and pressure regulation conveying is carried out to medium, when making the equipment in arm one/arm two have partial destruction, voltage-regulating system also can normally work.
null2、The pressure that can be detected respectively before and after pressure regulator in pipeline by the pressure sensor A that is provided with and pressure sensor B，And pressure sensor A and pressure sensor B can send measured pressure signal to MCU in real time，After MCU receives the pressure signal that pressure sensor A and pressure sensor B sends，Judgement is compared to the pressure recording，If the setup pressure value exceeding in pipeline，MCU sends, to the controller on the safety valve in respective line, the signal opened，After controller receives opening signal, control safety valve is opened and is carried out row pressure，When the pressure in pipeline is less than design pressure value，MCU sends the signal name closed to corresponding controllers，So that controller control safety valve cuts out，Thus reach to protect the purpose of voltage-regulating system，Make pipe-line system safer，Relatively reliable，There is double protection structure.
Brief description
Fig. 1 is structural representation of the present utility model.
Figure marks: 1 be the first safety valve, 2 be the first Pressure gauge, 3 be the first butterfly valve, 4 be the second butterfly valve, 5 be the second Pressure gauge, 6 be the 3rd butterfly valve, 7 be pressure regulator, 8 be the second safety valve, 9 be the 3rd Pressure gauge, 10 be the 4th butterfly valve, 11 be the 4th Pressure gauge, a be arm the first, b be arm the 2nd, c be arm three.
Detailed description of the invention
Below in conjunction with the accompanying drawings the utility model is described in detail.
nullLiquefied natural gas continuous voltage regulating system as shown in Figure 1，Including the first safety valve 1、First Pressure gauge 2、First butterfly valve 3、Second butterfly valve 4、Second Pressure gauge 5、3rd butterfly valve 6、Pressure regulator 7、Second safety valve 8、3rd Pressure gauge 9、4th butterfly valve 10、4th Pressure gauge 11、Arm one a、Arm two b、Arm three c，Described supervisor is arranged with arm one a、Arm two b，The branch point leading portion of supervisor is sequentially provided with the first safety valve 1、First Pressure gauge 2，It is sequentially provided with the first butterfly valve 3 respectively on described arm one a and arm two b、Filter、Flowmeter、Second butterfly valve 4、Second Pressure gauge 5、3rd butterfly valve 6、Pressure regulator 7、Second safety valve 8、3rd Pressure gauge 9 and the 4th butterfly valve 10，Described arm one a and arm two b converges to mutually on the back segment of supervisor，The back segment of supervisor is provided with the 4th Pressure gauge 11；Described arm one a is provided with arm three c being connected with arm two b, and the two ends of arm three c are connected between the second Pressure gauge 5 on arm one a, arm two b and the 3rd butterfly valve 6.
By being designed with safety valve before and after pressure regulator 7 so that when pressure regulator 7 air inlet pipe is excessive with the pressure in escape pipe, row pressure can be carried out to pipeline so that the voltage-regulating system of liquefied natural gas is more safe and reliable；This voltage-regulating system also has the medium type of flow, pressure regulation conveying can be carried out by arm one a, arm two b respectively, worked in coordination by arm three c also by arm one a, arm two b and pressure regulation conveying is carried out to medium, when making the equipment in arm one a/ arm two b have partial destruction, voltage-regulating system also can normally work；The first butterfly valve being provided with the 3rd, the second butterfly valve the 4th, the 3rd butterfly valve 6 and the 4th butterfly valve 10 can control the circulation style of medium, medium can be filtered by filter, flowmeter can accurately measure the medium two flowing through, and Pressure gauge can facilitate staff to know the pressure in pipeline at any time.
It is provided with pressure sensor A between described 3rd butterfly valve 6 and pressure regulator 7, it is provided with pressure sensor B between pressure regulator 7 and the 3rd Pressure gauge 9, described pressure sensor A is connected with MCU with pressure sensor B, described first safety valve 1 and the second safety valve 8 are provided with controller, described controller is connected with MCU, controller, after receiving command signal, can control safety valve and beat opening/closing.
nullThe pressure in pressure regulator 7 pipeline front and back can be detected by pressure sensor A and the pressure sensor B being provided with respectively，And pressure sensor A and pressure sensor B can send measured pressure signal to MCU in real time，After MCU receives the pressure signal that pressure sensor A and pressure sensor B sends，Judgement is compared to the pressure recording，If the setup pressure value exceeding in pipeline，MCU sends, to the controller on the safety valve in respective line, the signal opened，After controller receives opening signal, control safety valve is opened and is carried out row pressure，When the pressure in pipeline is less than design pressure value，MCU sends the signal name closed to corresponding controllers，So that controller control safety valve cuts out，Thus reach to protect the purpose of voltage-regulating system，Make pipe-line system safer，Relatively reliable，There is double protection structure.
Described flow is calculated as Intelligent target formula flowmeter, and the material of described intelligence target type meter is austenitic cryogenic steel, and austenitic cryogenic steel can be 304L.
Described pressure sensor A and pressure sensor B is ultralow temperature pressure sensor, and ultralow temperature pressure sensor is piezoresistive pressure sensor.
Described arm one a, arm two b and arm three c are seamless steel pipe, and the material of seamless steel pipe can be 1Cr18Ni9Ti.
Arm one a, two pipelines of arm two b again on supervisor so that when having device damage on an arm wherein, it is also possible to normally work.When the equipment on arm two b needs repairing/maintains, close the first butterfly valve the 3rd, the second butterfly valve the 4th, the 3rd butterfly valve 6 and the 4th butterfly valve 10 on arm two b, medium is entered from the inlet port of supervisor, can only enter in arm one a, pass sequentially through the equipment on arm one a, and after the pressure regulation of pressure regulator 7, discharging from outlet through supervisor's back segment, the 4th Pressure gauge that supervisor's back segment is installed can detect the pressure medium of final output；Also can be by closing the first butterfly valve the 3rd, the second butterfly valve 4 in arm two b, close the 3rd butterfly valve 6 on arm a and the 4th butterfly valve 10, making medium be entered in arm two b by arm one a, arm three c, thus be formed new circulation style, other parts can overhaul；In turn, it is passed to arm one a also permissible from arm two b through arm three c.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing the utility model specification and accompanying drawing content to be made or equivalence flow process conversion; or it is directly or indirectly used in other related technical fields, all in like manner include in scope of patent protection of the present utility model.
Claims (4)
1. a liquefied natural gas voltage-regulating system, it is characterized in that, including supervisor, arm one (a), arm two (b) and arm three (c), described supervisor is arranged with arm one (a), arm two (b), the branch point leading portion of supervisor is sequentially provided with the first safety valve (1), first Pressure gauge (2), it is sequentially provided with the first butterfly valve (3) respectively on described arm one (a) and arm two (b), filter, flowmeter, second butterfly valve (4), second Pressure gauge (5), 3rd butterfly valve (6), pressure regulator (7), second safety valve (8), 3rd Pressure gauge (9) and the 4th butterfly valve (10), described arm one (a) and arm two (b) converge to mutually on the back segment of supervisor, the back segment of supervisor is provided with the 4th Pressure gauge (11)；Described arm one (a) is provided with the arm three (c) being connected with arm two (b), and the two ends of arm three (c) are connected to arm one (a), the second Pressure gauge (5) on arm two (b) and between the 3rd butterfly valve (6).
2. liquefied natural gas voltage-regulating system as claimed in claim 1, it is characterized in that, it is provided with pressure sensor A between described 3rd butterfly valve (6) and pressure regulator (7), it is provided with pressure sensor B between pressure regulator (7) and the 3rd Pressure gauge (9), described pressure sensor A is connected with MCU with pressure sensor B, described first safety valve (1) and the second safety valve (8) are provided with controller, and described controller is connected with MCU.
3. liquefied natural gas voltage-regulating system as claimed in claim 2, it is characterised in that described pressure sensor A and pressure sensor B is ultralow temperature pressure sensor, and ultralow temperature pressure sensor is piezoresistive pressure sensor.
4. liquefied natural gas voltage-regulating system as claimed in claim 3, it is characterised in that described arm one (a), arm two (b) and arm three (c) are seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245892.6U CN205618993U (en) | 2016-03-29 | 2016-03-29 | Liquefied natural gas pressure regulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245892.6U CN205618993U (en) | 2016-03-29 | 2016-03-29 | Liquefied natural gas pressure regulating system |
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| CN205618993U true CN205618993U (en) | 2016-10-05 |
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| CN201620245892.6U Active CN205618993U (en) | 2016-03-29 | 2016-03-29 | Liquefied natural gas pressure regulating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730773A (en) * | 2017-04-18 | 2018-11-02 | 气体产品与化学公司 | Reach the control system in the natural gas line network of satisfied pressure limit |
| CN109630875A (en) * | 2017-10-09 | 2019-04-16 | 张家港中集圣达因低温装备有限公司 | Liquefied gas bottle releasing pressure automatically system and liquified gas automobile |
-
2016
- 2016-03-29 CN CN201620245892.6U patent/CN205618993U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730773A (en) * | 2017-04-18 | 2018-11-02 | 气体产品与化学公司 | Reach the control system in the natural gas line network of satisfied pressure limit |
| CN109630875A (en) * | 2017-10-09 | 2019-04-16 | 张家港中集圣达因低温装备有限公司 | Liquefied gas bottle releasing pressure automatically system and liquified gas automobile |
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