CN108253293A - Gas underground pressure regulator - Google Patents
Gas underground pressure regulator Download PDFInfo
- Publication number
- CN108253293A CN108253293A CN201611233135.8A CN201611233135A CN108253293A CN 108253293 A CN108253293 A CN 108253293A CN 201611233135 A CN201611233135 A CN 201611233135A CN 108253293 A CN108253293 A CN 108253293A
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- Prior art keywords
- valve
- outlet
- lower box
- welded
- blow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001914 filtration Methods 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 10
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000003795 desorption Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- 239000000567 combustion gas Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
A kind of gas underground pressure regulator including blow-down pipe and the upper box, lower box and pressure regulation core that are placed in subsurface, is welded with multiple interfaces, upper box and lower box are assembled integrally on blow-down pipe.Upper box surrounding, which is welded with, diffuses interface and check-valves interface passes through connection by metal hose with the interface on desorption tube respectively；Lower box includes inlet valve, inlet tube, outlet, outlet valve, regulator, filtering disconnecting device, difference gauge, entrance blow valve, outlet blow valve, inlet pressure gauge and delivery gauge, one end of the inlet valve and inlet tube connects, the other end of inlet tube is welded with lower box, one end of the outlet valve and outlet connects, the other end of outlet is welded with lower box, and the regulator and filtering disconnecting device are independently mounted in lower box.The apparatus structure is compact, safe and reliable, it can be achieved that gas pressure regulating voltage stabilizing, parameter are shown and superpressure diffuses cut-out.
Description
Technical field：
The equipment that the invention belongs to be applied in gas transmission and distribution system, more particularly to a kind of gas underground pressure regulator.
Background technology：
Domestic conventional gas pressure regulating box largely to arrange on the ground, and box house is by pipeline by valve, filter, pressure regulation
Device etc. is connected in turn.There are following defects for this Rose Box：1st, occupied space is big, safeguards complicated.2nd, part box house
Ground is moist, ventilation is not smooth, and device therefor easily corrodes, and there are security risks.3rd, most batch meters are arranged in beside road, are held
Sight easily is blocked, the uncivil behavior of some passerbys in addition causes tank surface cut significantly to have spot, influences beauty.4th, exist
The risk of gas leakage is caused by Vehicular impact.5th, babinet is easy to be opened, and there is be illegally modified parameter and cut-out combustion gas
The risk of supply.
Invention content：
The purpose of the present invention, which is that, overcomes above-mentioned the deficiencies in the prior art, provides a kind of Underground pressure regulation dress
It puts, compact, safe to use, reliable, the achievable gas pressure regulating of the apparatus structure, voltage stabilizing, parameter is shown and superpressure diffuses cut-out.
As above conceive, technical scheme is as follows：A kind of gas underground pressure regulator including blow-down pipe and is placed in ground
Upper box and lower box under face are welded with multiple interfaces on blow-down pipe, and upper box and lower box are assembled integrally, on upper box
Form is installed, openable upper cover is connected at the top of upper box；It is characterized in that：Upper box surrounding be welded with diffuse interface and
Check-valves interface passes through connection by metal hose with the interface on blow-down pipe respectively；Lower box includes inlet valve, inlet tube, outlet
Pipe, regulator, filtering disconnecting device, difference gauge, entrance blow valve, exports blow valve, inlet pressure gauge and goes out outlet valve
One end of mouth pressure gauge, the inlet valve and inlet tube connects, and the other end and the lower box of inlet tube weld, the outlet valve
Door is connect with one end of outlet, and the other end and the lower box of outlet weld, the regulator and filtering disconnecting device point
It is not independently mounted in lower box, the filtering disconnecting device is made of stop valve and filter core, pressure tappings at the difference gauge two
Filter core both sides are connected across, the regulator is made of pressure regulator and delivery gauge；The inlet pressure gauge and outlet pressure
Table shows the pressure of inlet tube and outlet respectively, and pressure pipe is equipped on outlet；Entrance emptying is provided on lower box
Valve communicates with internal high pressure area, exports blow valve communicates with internal low-voltage area.
Reinforcing rib is welded in the middle part of above-mentioned openable upper cover.
Above-mentioned upper box surrounding is welded with expansion interface.
The inlet tube and outlet of above-mentioned lower box and the junction of lower box are welded with floor.
Above-mentioned lower box top is installed by Safety relief valve.
Blowdown valve is provided on above-mentioned lower box.
Above-mentioned inlet valve and outlet valve are welded using buried welding ball valve and pipe network.
The present invention has the advantage that and good effect：
1st, the present invention is integrally placed at underground, and only upper cover is above ground level a little, so there is no need to build needed for traditional pressure regulating box compared with
Big civil engineering amount, saves floor space, and avoid the shortcomings of such as blocking sight, eliminates by the risk of Vehicular impact.
2nd, the present invention by integration of equipments such as stop valve and filter, pressure regulator and instrument to together, compact-sized, volume
It is small, realize efficiently using for space.
3rd, the present invention is whole makes lid-opening type babinet, and babinet is welded using steel plate, and closed place uses rubber ring
Sealing, can load-bearing, explosion-proof, waterproof, anti-leak.
4th, the present invention can be equipped with transparent window under upper-opening upper cover, and opening upper cover can facilitate the every instrument of observation to read
Number and equipment working condition conducive to inspection, and use seal with elastometic washer between transparent window and babinet, it is ensured that waterproof and dustproof,
Anti-leak.
5th, the present invention is gas leakage caused by reply equipment fault and Rig up error, and blow-down pipe is disposed by babinet, is led to
Cross metal hose on the upper box diffuse interface and check-valves interface is connected.About four meters of the blow-down pipe height, can have
Effect discharges into the atmosphere leakage combustion gas dilution.
6th, openable upper cover of the present invention needs to operate using nonstandard spanner, increases the difficulty illegally uncapped, while
Ensure that pilot valve be not illegally modified parameter and cut-out gas supply.
7th, using modularized design, internal unit can be proposed integrally the present invention, maintain easily and replace component.Pressure regulation core by
Terminal pad and instrument mounted thereto, filter core and pressure regulator composition, can integrally propose, realize modularization repair easy to disassemble
Function.
8th, the present invention is internal can connect sensor (or gas is led to external sensor by stainless steel capillary), sense
Device line is connected to external integrated electronic instrument box, and can not have to unlatching pressure regulation box cover just can conveniently check equipment work feelings
Condition, such as temperature, pressure and other parameters；Parameter stored record also can be copied to outside by parameter teletransmission to operating room by instrument box
Storage device.
Description of the drawings：
Fig. 1 is the principal section figure of the present invention；
Fig. 2 is the equipment meter diagram of the present invention；
Fig. 3 is blow-down pipe schematic diagram；
Fig. 4 is integrated instrument box schematic diagram.
The title of each component is in figure：
1- lower boxes；2- stiffener plates；3- inlet tubes；4- inlet valves；5- filter cores；6- check-valves；7- upper boxes；8- is regarded
Window；9- sealing strips；10- openable upper covers；11- reinforcing ribs；12- diffuses connecting leg；13- outlet valves；14- pressure pipes；15- goes out
Mouth pipe；16- spare interfaces；17- inlet pressure gauges；18- stop valves；19- blowdown valves；20- handles；21- Safety relief valves；22-
Export diffusion valve；23- pressure regulators；24- delivery gauges；25- inlet pressure gauges；26- casees lock connecting plate；27- difference gauges；28-
Interface；29- blow-down pipes；30- instrument boxs；31- integrates instrument；32- case lids；33- casees are locked.
Specific embodiment：
A kind of Underground pressure regulating box, including blow-down pipe 29 and the upper box 7, the lower box 1 that are placed in subsurface.Upper box is
The installation of instrumentation and operating space pass through bolt and lower box connecting plate installation composition one.Upper box and lower box connect
Rubber cushion is accompanied between fishplate bar to reach sealing water-proof function.
First, upper box structure explanation：
1st, 7 top of upper box is equipped with upper cover 10, and for unilateral open-type, open side is welded with handle 20, conveniently lifts
Lid.Upper cover locks connecting plate 26 by nonstandard bolt and case and fixes realization locking function.Upper cover surrounding is equipped with sealing strip 9, in upper cover
Upper cover is tamped with upper box seam crossing by sealing strip when covering tightly, and reaches sealing waterproof anti-leak function.
2nd, 10 middle part of upper cover is welded with reinforcing rib 11, can improve upper cover rigidity in the case where weightening is few, increase can be held
Weight.
3rd, form 8 is installed in upper box 7.Form by a general frame install water white transparency light-high-strength plate, four
Week is embedded with rubber ring.Form is integrally fixed on by wing nut in upper box 7, is formed one of interlayer to internal unit, can be prevented
Water and dust enter lower space, while can also prevent the combustion gas of leakage from entering form and the space in upper cover.Form 8 and upper cover
10 composition two seals, improve reliability and safety.
4th, 7 surrounding of upper box is welded with check-valves interface, diffuses interface and spare interface 16, can be respectively used to installation non-return
Valve 6, Safety relief valve 21 diffuse connecting leg 12 and the signal pipe of other purposes etc..
Check-valves 6 on check-valves interface is installed and can ensure that combustion gas can be led in time when gas leakage occurs for internal unit
The blow-down pipe that check-valves and connected metal hose are crossed into four meters above ground level is spilt into air.The installation of check-valves disappears
In addition to form and upper cover being made to bear gaseous-pressure gas injection when checking maintenance opens upper cover and go out to cause danger because of internal gas leakage
Hidden danger；It can so that the combustion gas stream of leakage goes out babinet and external humid air can not flow into using check-valves, avoid the formation of
Air fuel gas mixed gas reduces potential explosion danger, while equipment corrosion caused by also avoiding inner air humidity.
2nd, lower box structure explanation：
1st, lower box is mainly welded by inlet valve 4, inlet tube 3, lower box 1, outlet 15, outlet valve 13.
Inlet tube 3, outlet 15 and the junction of lower box 1 are welded with stiffener plate 2, to improve integral strength, avoid because of welded pipe
The pulling force that net sedimentation increase comes in and goes out between nozzle and cylinder weld seam makes the risk of welding seam breaking.
2nd, lower box top installation Safety relief valve 21, after outlet pressure is higher than and diffuses setting value, Safety relief valve 21
Action, ensures that pressure no longer rises discharging by way of combustion gas in outlet.
3rd, installation filtering disconnecting device inside lower box, regulator tune, difference gauge, entrance blow valve, outlet blow valve,
Inlet pressure gauge and delivery gauge.Cut-out filter device is mainly made of stop valve 18 and filter core 5, and gas is via 5 mistake of filter core
After filter follow-up regulator is entered back by stop valve 18.After regulator outlet pressure increases to over cut-out setting value, cut
The disconnected action of valve 18 cuts off gas passage to ensure that follow-up loine pressure no longer increases.Pressure tappings are connected across filter core two at difference gauge two
Side, the clean-up performance of filter core 5 is shown by 27 difference gauges, should replace filter core when difference gauge reading is excessive in time.
Regulator is mainly made of pressure regulator 23 and delivery gauge 24.Pressure regulator 23 is direct acting type pressure regulator,
Negotiability is big, and control is accurate, and reaction speed is fast.
4th, in view of gas ductwork causes pipe network to be intake because constructing to slip up in practical application, so it is also a large amount of inside regulator
The situation of water inlet, sets blowdown valve 19 on lower box, and being connected with stainless steel tube under blowdown valve leads directly to babinet minimum point.Can into
Sewage recovery gas supply can be discharged by not having to integral demounting in water accident, and integral demounting processing is done again after accident thoroughly processing.
5th, entrance blow valve 25 is communicated with internal high pressure area, can provide gas access way in test and checking maintenance.Go out
Mouth blow valve 22 is identical with internal low-voltage area, can provide gas access way in test and checking maintenance.
6th, inlet pressure gauge 17 can real-time display pressure regulating box import and export pressure with delivery gauge 24.
7th, pressure pipe 14 provides outlet pressure signal for stop valve 18 and pressure regulator 23.
3rd, blow-down pipe 29 is after setting, and four meters above ground level of top nozzle, lower weld has interface 28, soft by metal
Manage with pressure regulating box diffuse interface, check-valves interface connects, can also be connected according to different situations with spare interface 16.
4th, integrated electronic instrument box 30 can be mounted on blow-down pipe, also can be individually attached on independent stent.This is integrated
Electronics electricity box have the characteristics that：
1st, internal integrated electronic instrument is monolithic devices, can connect multiple signals, such as temperature, pressure, flow signal, can be real
When be shown on liquid crystal display；
2nd, recording frequency can be set and parameter that stored record arrives, and store operation note, can to the parameter of storage and
The reading of operation note and deletion setting associated rights, conveniently check and ensure that data are true；
3rd, equipped with USB interface, movable storage device and computer can be connected, facilitates export data and modification systematic parameter；
4th, can outer signal line also can wirelessly teletransmission to monitoring room computer, be run in equipment by external equipment
When there is abnormal and relevant parameter (such as temperature, pressure, interior storage capacity) and reaches setting value in situation, can integrated instrument with
Sound-light alarm is realized on monitoring room computer；
5th, every integrated instrument is signed with unique hardware digital, it is ensured that modification parameter can only be by specified professional
In integrated instrument or the calculating hands- operation of connection.
The present invention the course of work be：Fuel gas from fecder system network enters underground from intake line and inlet valve
Inside pressure regulating box, after filtering into pressure regulator, enter low-pressure pipe network through outlet outflow pressure regulating box after pressure regulation.Work as outlet pressure
After setting pressure more than Safety relief valve, Safety relief valve automatic relief, gas enters blow-down pipe via metal hose and spills into
In air.After pressure regulating box outlet pressure is beyond stop valve setting pressure, valve events are cut off, close pressure regulator access.It is practical
In use can more parallel connections in groups, separate unit failure need to only close this entrance valve when need to repair, without influencing
Whole ventilation.
Claims (7)
1. a kind of gas underground pressure regulator including blow-down pipe and the upper box and lower box that are placed in subsurface, welds on blow-down pipe
Multiple interfaces are connected to, upper box and lower box are assembled integrally, and form is equipped on upper box, is connected with and can open at the top of upper box
Open formula upper cover；It is characterized in that：Upper box surrounding be welded with diffuse interface and check-valves interface respectively with the interface on blow-down pipe
Pass through connection by metal hose；Lower box includes inlet valve, inlet tube, outlet, outlet valve, regulator, filtering cut-out
Device, difference gauge, entrance blow valve, outlet blow valve, inlet pressure gauge and delivery gauge, the inlet valve and inlet tube
One end connection, the other end of inlet tube welds with lower box, and one end of the outlet valve and outlet connects, outlet
The other end is welded with lower box, and the regulator and filtering disconnecting device are independently mounted in lower box, the filtering
Disconnecting device is made of stop valve and filter core, and pressure tappings are connected across filter core both sides at the difference gauge two, the regulator by
Pressure regulator and delivery gauge composition；The inlet pressure gauge and delivery gauge show the pressure of inlet tube and outlet respectively
Power, and pressure pipe is installed on outlet；Entrance blow valve is provided on lower box to communicate with internal high pressure area, export blow valve
It is communicated with internal low-voltage area.
2. gas underground pressure regulator according to claim 1, it is characterised in that：It is welded in the middle part of above-mentioned openable upper cover
There is reinforcing rib.
3. gas underground pressure regulator according to claim 1, it is characterised in that：Above-mentioned upper box surrounding is welded with extension
Interface.
4. gas underground pressure regulator according to claim 1, it is characterised in that：The inlet tube of above-mentioned lower box and outlet
The junction of pipe and lower box is welded with floor.
5. gas underground pressure regulator according to claim 1, it is characterised in that：Above-mentioned lower box top installation safety is put
Dissipate valve.
6. gas underground pressure regulator according to claim 1, it is characterised in that：Blowdown is provided on above-mentioned lower box
Valve.
7. gas underground pressure regulator according to claim 1, it is characterised in that：Above-mentioned inlet valve and outlet valve are adopted
It is welded with buried welding ball valve and pipe network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233135.8A CN108253293A (en) | 2016-12-28 | 2016-12-28 | Gas underground pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233135.8A CN108253293A (en) | 2016-12-28 | 2016-12-28 | Gas underground pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108253293A true CN108253293A (en) | 2018-07-06 |
Family
ID=62720168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611233135.8A Pending CN108253293A (en) | 2016-12-28 | 2016-12-28 | Gas underground pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108253293A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253395A (en) * | 2018-11-15 | 2019-01-22 | 特瑞斯能源装备股份有限公司 | A kind of high leakproofness underground voltage regulating station |
| CN110260158A (en) * | 2019-07-23 | 2019-09-20 | 天津新科成套仪表有限公司 | A kind of spoke flow valve core underground pressure regulator |
| CN110393991A (en) * | 2019-08-28 | 2019-11-01 | 上海飞奥燃气设备有限公司 | Buried gas filter |
| CN111692532A (en) * | 2020-04-10 | 2020-09-22 | 江苏盛伟燃气科技有限公司 | Buried voltage regulating device |
| CN113719756A (en) * | 2021-10-09 | 2021-11-30 | 河北瑞星燃气设备股份有限公司 | Direct-buried underground pressure regulating box and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201621472U (en) * | 2010-03-25 | 2010-11-03 | 费希尔久安输配设备(成都)有限公司 | Fuel gas pressure regulating box |
| CN203500850U (en) * | 2013-09-12 | 2014-03-26 | 天津城建大学 | Movable type storage, transportation and pressure reduction device for compressed natural gas |
| CN205402242U (en) * | 2016-03-08 | 2016-07-27 | 沧州市天龙燃烧设备有限公司 | Compressed natural gas pressure regulator |
| CN205782016U (en) * | 2016-03-01 | 2016-12-07 | 乐山市山鹰模具有限责任公司 | Gas Pressure Regulating Equipment |
| CN205806943U (en) * | 2016-05-18 | 2016-12-14 | 王翔宇 | Underground pressure regulating box |
| CN205806942U (en) * | 2016-05-18 | 2016-12-14 | 王翔宇 | Gas underground pressure regulator |
-
2016
- 2016-12-28 CN CN201611233135.8A patent/CN108253293A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201621472U (en) * | 2010-03-25 | 2010-11-03 | 费希尔久安输配设备(成都)有限公司 | Fuel gas pressure regulating box |
| CN203500850U (en) * | 2013-09-12 | 2014-03-26 | 天津城建大学 | Movable type storage, transportation and pressure reduction device for compressed natural gas |
| CN205782016U (en) * | 2016-03-01 | 2016-12-07 | 乐山市山鹰模具有限责任公司 | Gas Pressure Regulating Equipment |
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| CN205806942U (en) * | 2016-05-18 | 2016-12-14 | 王翔宇 | Gas underground pressure regulator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253395A (en) * | 2018-11-15 | 2019-01-22 | 特瑞斯能源装备股份有限公司 | A kind of high leakproofness underground voltage regulating station |
| CN110260158A (en) * | 2019-07-23 | 2019-09-20 | 天津新科成套仪表有限公司 | A kind of spoke flow valve core underground pressure regulator |
| CN110260158B (en) * | 2019-07-23 | 2024-01-26 | 天津新科成套仪表有限公司 | Radial flow valve core underground pressure regulating device |
| CN110393991A (en) * | 2019-08-28 | 2019-11-01 | 上海飞奥燃气设备有限公司 | Buried gas filter |
| CN110393991B (en) * | 2019-08-28 | 2024-04-30 | 上海飞奥燃气设备有限公司 | Buried gas filter |
| CN111692532A (en) * | 2020-04-10 | 2020-09-22 | 江苏盛伟燃气科技有限公司 | Buried voltage regulating device |
| CN111692532B (en) * | 2020-04-10 | 2021-05-11 | 江苏盛伟燃气科技有限公司 | Buried voltage regulating device |
| CN113719756A (en) * | 2021-10-09 | 2021-11-30 | 河北瑞星燃气设备股份有限公司 | Direct-buried underground pressure regulating box and using method thereof |
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