CN112392293A - Noise reduction device for workover operation - Google Patents

Noise reduction device for workover operation Download PDF

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Publication number
CN112392293A
CN112392293A CN201910742957.6A CN201910742957A CN112392293A CN 112392293 A CN112392293 A CN 112392293A CN 201910742957 A CN201910742957 A CN 201910742957A CN 112392293 A CN112392293 A CN 112392293A
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CN
China
Prior art keywords
noise reduction
plate
roof
reduction device
room
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.)
Pending
Application number
CN201910742957.6A
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Chinese (zh)
Inventor
李正
邱衍辉
周华
王宁
刘冰
魏清清
张仲尼
梁晗
蒋丹瑶
杨静波
喻帅
梁耀文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Co Ltd
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Petrochina Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Petrochina Co Ltd filed Critical Petrochina Co Ltd
Priority to CN201910742957.6A priority Critical patent/CN112392293A/en
Publication of CN112392293A publication Critical patent/CN112392293A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H1/00Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
    • E04H1/12Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
    • E04H1/1205Small buildings erected in the open air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663Sound attenuation

Abstract

The invention provides a well repair noise reduction device, which comprises: the noise reduction house comprises a wall body, a roof and a soundproof door; the outer side of the roof is provided with an exhaust funnel silencer; the wall body comprises an outer layer plate and an inner layer plate, and air is filled between the outer layer plate and the inner layer plate. The invention can effectively block the noise in the well site.

Description

Noise reduction device for workover operation
Technical Field
The invention relates to the technical field of oil exploitation, in particular to a well repairing operation noise reduction device.
Background
The phenomenon that noise exceeds the standard generally exists in the well repairing operation process of the production wells, and particularly certain harm is easily brought to human health due to the influence of noise of some production wells in urban areas, so that noise interference influences the normal operation of the oil and gas wells, and not only influences the production timeliness but also influences the oil and gas yield. At present, the conventional noise treatment means is mainly to install sound insulation walls around a well site to isolate low noise. But the top of present soundproof wall is uncovered, and whole noise reduction effect is not ideal, can't effectively obstruct the inside noise of well site.
Disclosure of Invention
The embodiment of the invention provides a well workover noise reduction device, which can effectively block the noise inside a well site and comprises: a noise reduction room and a noise reduction cover arranged on the first outer side surface of the noise reduction room, wherein,
the noise reduction room comprises a wall body, a roof and a soundproof door;
the outer side of the roof is provided with an exhaust funnel silencer;
the wall body comprises an outer layer plate and an inner layer plate, and air is filled between the outer layer plate and the inner layer plate.
In the embodiment of the invention, the noise reduction room comprises the wall body, the roof and the soundproof door, a closed noise reduction environment can be formed, the noise reduction effect is good, meanwhile, the wall body comprises the outer plate and the inner plate, and air is filled between the outer plate and the inner plate, so that the noise reduction effect of the wall body can be further improved; the noise reduction cover and the exhaust funnel silencer can further optimize the noise reduction effect of the noise reduction room.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
FIG. 1 is a schematic structural view of a noise reducing device for workover operations in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a wall;
FIG. 3 is a flow chart of the installation of the noise reducer for workover operations.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Fig. 1 is a schematic structural diagram of a noise reduction device for workover treatment according to an embodiment of the present invention, as shown in fig. 1, the noise reduction device includes:
a noise reduction room 1 and a noise reduction cover 12 arranged on a first outer side surface of the noise reduction room 1, wherein,
the noise reduction room 1 comprises a wall 16, a roof 3 and a soundproof door 15;
the outer side of the roof 3 is provided with an exhaust funnel silencer 4;
the wall 16 comprises an outer plate 17 and an inner plate 18, and air is filled between the outer plate 17 and the inner plate 18.
In the embodiment of the invention, the noise reduction room comprises the wall body, the roof and the soundproof door, a closed noise reduction environment can be formed, the noise reduction effect is good, meanwhile, the wall body comprises the outer plate and the inner plate, and air is filled between the outer plate and the inner plate, so that the noise reduction effect of the wall body can be further improved; the noise reduction cover and the exhaust funnel silencer can further optimize the noise reduction effect of the noise reduction room.
The soundproof door 15 in fig. 1 can facilitate entry of workover personnel, and can effectively block workover noise when the soundproof door is in a closed state. The three-layer structure of the outer plate, the air and the inner plate of the wall body 16 can further improve the noise reduction effect, reduce the weight of the noise reduction device for workover treatment and reduce the manufacturing cost of the noise reduction device for workover treatment. In addition, the structure of the noise reduction device for workover operation is convenient to disassemble and assemble, so that the noise reduction device for workover operation can be conveniently moved. The size of the noise reduction room 1 can be customized according to actual conditions, for example, the length of the noise reduction room is 8000mm, the width of the noise reduction room is 4500mm, and the height of the noise reduction room is 3600mm, so that the internal daily maintenance space is ensured.
In practice, the outer and inner laminates 17, 18 may have a variety of configurations, one of which is described below.
In one embodiment, the outer laminate 17 includes a first outer laminate 19 and a first inner laminate 20 that are overlapped and have a uniform shape and size, with a filler material disposed between the first outer laminate 19 and the first inner laminate 20;
the inner layer board 18 includes a second outer side board 21 and a second inner side board 22 which are overlapped and have the same shape and size, and a filling material is arranged between the second outer side board 21 and the second inner side board 22.
In the above embodiment, fig. 2 is a schematic structural diagram of a wall, as shown in fig. 2, the first outer side plate 19 and the first inner side plate 20 are overlapped and have the same shape and size, so that the first outer side plate 19 and the first inner side plate 20 can be relatively attached to each other, and a filler material is disposed between the first outer side plate 19 and the first inner side plate 20, and is combined with the first outer side plate 19 and the first inner side plate 20, so that the noise reduction effect of the outer plate 17 can be further optimized. Similarly, a filler material is disposed between the second outer side plate 21 and the second inner side plate 22, so that the noise reduction effect of the inner layer plate 18 can be further optimized.
In one embodiment, the first outer panel 19 is a plastic-injection panel;
and/or the first inner side plate 20 adopts a galvanized punching plate;
and/or the second outer side plate 21 adopts a galvanized punching plate;
and/or the second inner side panel 22 is a galvanized punched plate.
In the above embodiment, the thickness of the plastic-sprayed plate used for the first outer side plate 19 may be 1mm, the thickness of the galvanized punched plate used for the first inner side plate 20 may be 0.5mm, and the thickness of the galvanized punched plate used for the second outer side plate 21 and/or the second inner side plate 22 may be 0.5 mm.
The noise reduction effect of the above materials of the first outer side plate 19, the first inner side plate 20, the second outer side plate 21 and the second inner side plate 22 is better, and it is understood that other materials with good noise reduction effect can be adopted for the first outer side plate 19, the first inner side plate 20, the second outer side plate 21 and the second inner side plate 22, and related modifications are all within the protection scope of the present invention.
In one embodiment, the filling material is glass wool. The thickness of the filler material interposed between the first outer side plate 19 and the first inner side plate 20 may be 100mm, and the thickness of the filler material interposed between the second outer side plate 21 and the second inner side plate 22 may be 50 mm.
In the above embodiments, the glass wool can effectively reduce noise, and it is understood that other materials for reducing noise can be used as the filling material, and all the related modifications are within the scope of the present invention.
In practice, the roof 3 may have various structures, one example of which is given below.
In one embodiment, the roof 3 comprises an air duct 5 and a stringing hole;
an exhaust fan 8 is arranged on the roof 3;
an explosion-proof lamp 6 is mounted on the inner side of the roof 3.
In the above embodiment, the ventilation duct 5 and the exhaust fan 8 can ensure the air circulation in the noise reduction device for workover operation, the rope threading holes are used for penetrating the load ropes, the number of the rope threading holes can be two, and the load ropes can facilitate the carrying and moving of the noise reduction device for workover operation. The explosion-proof lamp 6 is used for danger early warning of the noise reduction device for workover operation, can be arranged in the center of the inner side of the roof 3, meets the illumination requirement of the noise reduction device for workover operation, and the type of the explosion-proof lamp 6 can adopt a GC11 type explosion-proof lamp. There may be 2 exhaust fans 8, and the exhaust fan 8 may be a forced-draft fan.
In one embodiment, the second outer side surface of the noise reduction room 1 is provided with an air inlet explosion-proof axial flow fan 2.
In the above embodiment, the air intake explosion-proof axial flow fan 2 is used for controlling the air intake of the noise reduction device for workover treatment, and keeps the air circulation in the noise reduction device for workover treatment together with the exhaust fan 8. The air inlet explosion-proof axial flow fan 2 is far away from the operation chamber 13, so the second outer side face can be opposite to the first outer side face.
In practice, the noise reduction cover 12 has various structures, and one example is given below.
In one embodiment, the noise reduction hood 12 is a drum noise reduction hood;
an open bearing slide block 11 is installed on the top layer of the noise reduction cover 12, and the open bearing slide block 11 is installed at a slot on the top layer of the noise reduction cover 12;
the outer side of noise reduction hood 12 is fitted with movable drum hood side plates 14.
In the embodiment, the open bearing slide block 11 is provided with the roller and can move freely, and the open bearing slide block moves along with the load rope in the ascending and descending processes of the noise reduction device in the well repairing operation, so that the load rope is protected from being abraded while the sound is reduced; the side plate 14 of the roller cover can move, so that an operator can conveniently go in and out, and daily inspection and maintenance can be more conveniently carried out.
In addition to the above structure, the noise reduction cover 12 further includes a steel plate frame, for example, the steel plate frame may be 4mm thick, a slide way is provided on the steel plate frame, and the side plate of the drum cover may be installed in a corresponding slot of the slide way.
In one embodiment, the side of the noise reduction cover 12 away from the noise reduction room 1 is provided with an operation room 13.
In the above embodiment, the operation room 13 is used for the operator to operate the workover noise reduction device to ascend and descend.
In practice, the roof 3 may have various structures, two of which are shown below.
In one embodiment, the roof 3 includes an outer roof layer and an inner roof layer; roof filler is arranged between the outer layer and the inner layer of the roof.
In one embodiment, the outer layer and the inner layer of the roof adopt galvanized pore plates;
and/or the roof filler adopts glass centrifugal cotton.
In both embodiments, the roof filler is disposed between the outer layer and the inner layer of the roof, so that the noise reduction effect of the roof 3 can be further optimized. The roof outer layer and the roof inner layer of the galvanized pore plate are matched with roof filler made of glass centrifugal cotton, so that a good noise reduction effect can be achieved. The thickness of the roof filler which adopts glass centrifugal cotton can be 200 mm. Of course, it is understood that other materials may be used for the outer and inner layers of the roof, and other materials may be used for the roof filler, and all such modifications are intended to fall within the scope of the present invention.
In practice, the roof 3 may have various shapes, and one example is given below.
In one embodiment, the roof 3 is a herringbone roof.
In the above embodiments, the gable roof is effective in removing rainwater, however, it is understood that roofs of other shapes, such as a sloped rectangle, may be used, and all such modifications are intended to fall within the scope of the present invention.
In one embodiment, an explosion proof electrical box is mounted inside the wall 16.
In the above embodiment, the explosion-proof distribution box is used for distributing power to the interior of the noise reduction device for workover operation, including the exhaust pipe silencer 4, the exhaust fan 8, the explosion-proof lamp 6, the operation room 13 and the like, the distribution box has explosion-proof function, can carry out danger early warning on the workover noise reduction device, the size of the explosion-proof distribution box can be 300mm long and 400mm wide, the switch of the explosion-proof distribution box can adopt a DZ47LEC/40 explosion-proof leakage protector switch, the explosion-proof distribution box is connected with a main power supply box of the site where the workover noise reduction device is located through a cable, the cable can adopt an anti-aging rubber sleeve cable, it is understood that the explosion-proof distribution box may be installed in the noise reduction room, and may be installed at other positions of the noise reduction room besides the inner side of the wall 16, and all the relevant modifications fall within the protection scope of the present invention, and if the explosion-proof distribution box is installed at the inner side of the wall 16, a wall-mounted explosion-proof distribution box may be used.
In one embodiment, the exhaust stack muffler 4 is of an impedance composite muffling structure.
During the concrete implementation, the exhaust funnel muffler 4 adopting the impedance composite type muffling structure has a better noise reduction effect, and the size of the exhaust funnel muffler 4 can be 800mm in length and 1000mm in width.
In one embodiment, the soundproof door 15 is a double-door totally-enclosed soundproof door.
In the above embodiment, the double-door fully-closed soundproof door has both practical modification work and noise reduction, there may be a plurality of soundproof doors 15, two soundproof doors 15 are shown in fig. 1, and the thickness of the soundproof door 15 may be 200 mm.
In one embodiment, the noise reduction room 1 is made of steel ground beams, and/or the noise reduction room 1 is made of a steel plate framework.
In the above embodiment, the structure of the noise reduction room 1 can realize the quick installation, disassembly and movement of the noise reduction device in workover treatment, and the noise reduction device in workover treatment is firm and practical and has very good environmental protection performance. Wherein, the steel grade beam can adopt H125 shaped steel grade beam, and the thickness of steel sheet skeleton can be 4mm, has the slide on the steel sheet skeleton, can install outer plywood 17 and the interior plywood 18 of wall body 16 in the slide corresponds the draw-in groove.
Fig. 3 is a flow chart illustrating the installation of the noise reducer for workover operations, as shown in fig. 3, including:
step 301, determining an installation site;
arranging a relatively flat field around the well repairing operation to be performed according to the overall size of the well repairing operation noise reduction device;
step 302, installing a noise reduction room;
firstly, laying a steel ground beam, selecting an H125 type steel ground beam, installing a steel plate framework, installing a 4mm steel plate framework, arranging a slideway on the steel plate framework, installing an outer plate and an inner plate in corresponding clamping grooves of the slideway, and installing a soundproof door, wherein the soundproof door can adopt a double-side double-door full-closed type soundproof door;
step 303, installing an air inlet explosion-proof axial flow fan;
an air inlet explosion-proof axial flow fan 1 is arranged on the second outer side surface of the wall body far away from the operation room;
step 304, installing a roof;
the roof can be provided with a man-shaped roof, and is provided with an air duct 5, two forced draft fans 2 and an exhaust funnel silencer 4, and two stringing holes are reserved on the roof for the load to pass through conveniently;
305, installing an explosion-proof lamp and an explosion-proof distribution box in the noise reduction room;
an explosion-proof lamp 1 is arranged at the center of a roof in the noise reduction room 1, a GC11 type explosion-proof lamp can be adopted, an explosion-proof distribution box is arranged, and a wall-mounted explosion-proof distribution box can be arranged on a wall body;
step 306, mounting a roller noise reduction cover;
of course, it should be understood that there may be other variations to the installation process of the noise reduction device for workover treatment, and all the related variations should fall within the scope of the present invention.
And connecting the roller noise reduction cover with a first outer side surface of the noise reduction room 1. At first, install the 4mm steel sheet skeleton of the cover of making an uproar that falls of cylinder, there is the slide on the steel sheet skeleton, install the cylinder cover curb plate in the slide corresponds the draw-in groove, will notice placing of cylinder cover curb plate during the installation, and the cylinder cover curb plate is movable, the daily inspection and the maintenance of being convenient for. Then the top layer of the noise reduction cover of the roller is placed, a slot is formed in the top layer, a bearing sliding block 11 with an opening is installed, and the sliding block is provided with a rolling shaft and can move freely.
In the well repair work noise reduction device provided by the embodiment of the invention, the noise reduction room comprises the wall body, the roof and the soundproof door, a closed noise reduction environment can be formed, the noise reduction effect is good, meanwhile, the wall body comprises the outer layer plate and the inner layer plate, and air is filled between the outer layer plate and the inner layer plate, so that the noise reduction effect of the wall body can be further improved; the noise reduction cover and the exhaust funnel silencer can further optimize the noise reduction effect of the noise reduction room.
The outer plate 17 includes a first outer plate 19 and a first inner plate 20 which are overlapped and have the same shape and size, and a filler is interposed between the first outer plate 19 and the first inner plate 20; the inner plate 18 comprises a second outer side plate 21 and a second inner side plate 22 which are overlapped and have the same shape and size, and filling materials are arranged between the second outer side plate 21 and the second inner side plate 22; the above structure allows the noise reduction effect of the outer and inner laminates 17 and 18 to be further optimized. The explosion-proof lamp and the explosion-proof distribution box of installation have explosion-proof function, can guarantee the safety of workover. The installation method of the well repair operation noise reduction device is easy to disassemble and move, can be suitable for different well repair operation sites, can be assembled and disassembled along with the need, has short period, does not occupy the land, and can be recycled; after the facility is dismantled, no construction waste is generated, and the original appearance of the ground can be restored.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (15)

1. A workover noise reduction device, comprising: a noise reduction room (1) and a noise reduction cover (12) arranged on the first outer side surface of the noise reduction room (1), wherein,
the noise reduction room (1) comprises a wall body (16), a roof (3) and a soundproof door (15);
an exhaust funnel silencer (4) is arranged on the outer side of the roof (3);
the wall body (16) comprises an outer plate (17) and an inner plate (18), and air is filled between the outer plate (17) and the inner plate (18).
2. The well servicing noise reducer of claim 1, wherein the outer plate (17) comprises a first outer plate (19) and a first inner plate (20) that overlap and are of uniform shape and size, and wherein a filler material is disposed between the first outer plate (19) and the first inner plate (20);
the inner layer plate (18) comprises a second outer side plate (21) and a second inner side plate (22) which are overlapped and have the same shape and size, and filling materials are arranged between the second outer side plate (21) and the second inner side plate (22).
3. A well servicing noise reduction device according to claim 1, characterized in that the roof (3) comprises an air duct (5) and a stringing hole;
an exhaust fan (8) is arranged on the roof (3);
an explosion-proof lamp (6) is arranged on the inner side of the roof (3).
4. The well repair work noise reduction device according to claim 1, wherein the second outer side surface of the noise reduction room (1) is provided with an air inlet explosion-proof axial flow fan (2).
5. The workover noise reduction device of claim 1, wherein the noise reduction hood (12) is a drum noise reduction hood;
an open bearing sliding block (11) is installed on the top layer of the noise reduction cover (12), and the open bearing sliding block (11) is installed at a groove of the top layer of the noise reduction cover (12);
the outer side surface of the noise reduction cover (12) is provided with a movable roller cover side plate (14).
6. The well servicing noise reduction device according to claim 1, characterized in that an operation room (13) is installed on the side of the noise reduction cover (12) away from the noise reduction room (1).
7. A well servicing noise reduction device according to claim 1, wherein the roof (3) comprises a roof outer layer and a roof inner layer; roof filler is arranged between the outer layer and the inner layer of the roof.
8. A well servicing noise reduction device according to claim 1, characterized in that the roof (3) is a herringbone roof.
9. The well servicing noise reduction device of claim 1, characterized in that an explosion-proof electric box is installed inside the wall (16).
10. The well servicing noise reduction device of claim 1, wherein the exhaust stack muffler (4) is of an impedance compound type muffling structure.
11. The well servicing noise reduction device of claim 1, wherein the soundproof door (15) is a double-door totally-enclosed soundproof door.
12. The well repair work noise reduction device according to claim 1, wherein the noise reduction room (1) is a steel ground beam, and/or the noise reduction room (1) is a steel plate framework.
13. The workover noise reduction device of claim 2, wherein the first outer panel (19) is a jet molded panel;
and/or the first inner side plate (20) adopts a galvanized punching plate;
and/or the second outer side plate (21) adopts a galvanized punching plate;
and/or the second inner side plate (22) is a galvanized punched plate.
14. The well servicing noise reducer of claim 2, wherein the filler material is glass wool.
15. The workover noise reducer of claim 7 wherein the outer roof layer and the inner roof layer are galvanized perforated sheets;
and/or the roof filler adopts glass centrifugal cotton.
CN201910742957.6A 2019-08-13 2019-08-13 Noise reduction device for workover operation Pending CN112392293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910742957.6A CN112392293A (en) 2019-08-13 2019-08-13 Noise reduction device for workover operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910742957.6A CN112392293A (en) 2019-08-13 2019-08-13 Noise reduction device for workover operation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114810677A (en) * 2022-04-19 2022-07-29 河南远航隔音材料科技有限公司 Noise reduction room structure of coal mine ventilator and installation method thereof

Citations (5)

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Publication number Priority date Publication date Assignee Title
US20090065290A1 (en) * 2007-09-06 2009-03-12 Kim Bu Yeol Interfloor noise reduction panel with air purifying and sterilizing functions for building
CN201396133Y (en) * 2009-05-05 2010-02-03 东营爱特机电技术有限责任公司 Workover rig dragged by industrial electric network-driven frequency-conversion speed-controlling rare-earth permanent magnet synchronous motor
CN201593317U (en) * 2009-12-23 2010-09-29 西安长庆钻宇实业集团有限公司 Noise reduction room of large-scale power device capable of being disassembled and assembled quickly for power generator
CN204344081U (en) * 2014-12-19 2015-05-20 刘铁民 A kind of ram pile driver denoising device
CN206298963U (en) * 2016-12-28 2017-07-04 盘锦辽河油田泰利达顺诚环保工程有限公司 A kind of well maintenance vehicle modularization fast-assembling sound insulation and noise reduction room

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090065290A1 (en) * 2007-09-06 2009-03-12 Kim Bu Yeol Interfloor noise reduction panel with air purifying and sterilizing functions for building
CN201396133Y (en) * 2009-05-05 2010-02-03 东营爱特机电技术有限责任公司 Workover rig dragged by industrial electric network-driven frequency-conversion speed-controlling rare-earth permanent magnet synchronous motor
CN201593317U (en) * 2009-12-23 2010-09-29 西安长庆钻宇实业集团有限公司 Noise reduction room of large-scale power device capable of being disassembled and assembled quickly for power generator
CN204344081U (en) * 2014-12-19 2015-05-20 刘铁民 A kind of ram pile driver denoising device
CN206298963U (en) * 2016-12-28 2017-07-04 盘锦辽河油田泰利达顺诚环保工程有限公司 A kind of well maintenance vehicle modularization fast-assembling sound insulation and noise reduction room

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114810677A (en) * 2022-04-19 2022-07-29 河南远航隔音材料科技有限公司 Noise reduction room structure of coal mine ventilator and installation method thereof

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