CN113551155A - Steam pipeline operation comprehensive maintenance device - Google Patents
Steam pipeline operation comprehensive maintenance device Download PDFInfo
- Publication number
- CN113551155A CN113551155A CN202110567441.XA CN202110567441A CN113551155A CN 113551155 A CN113551155 A CN 113551155A CN 202110567441 A CN202110567441 A CN 202110567441A CN 113551155 A CN113551155 A CN 113551155A
- Authority
- CN
- China
- Prior art keywords
- plywood
- maintenance device
- water tank
- steam pipeline
- comprehensive maintenance
- 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
Links
- 238000012423 maintenance Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000011120 plywood Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000006698 induction Effects 0.000 claims description 10
- 210000003437 trachea Anatomy 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F17D1/06—Pipe-line systems for gases or vapours for steam
-
- 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
- F17D5/02—Preventing, monitoring, or locating loss
-
- 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
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a steam pipeline operation comprehensive maintenance device which comprises a top plate, wherein the lower end of the top plate is symmetrically and fixedly connected with two frames in a U-shaped structure, two frames are symmetrically internally and internally provided with a plywood, the plywood is composed of a first arc plate and two second arc plates which are symmetrically and integrally formed on two sides of the first arc plate, the length of the first arc plate is larger than the thickness of the second arc plates, the inner diameter of the first arc plate is larger than that of the second arc plates, the edges of one opposite sides of the two plywood plates are fixedly glued with sealing gaskets, and a telescopic mechanism is connected between each plywood plate and the side frame of the plywood plate. When the steam pipe is detected to leak gas, the switch valve can be opened to observe whether bubbles are generated in the water tank, and the operation is simple and convenient; when the invention detects whether the air leakage of the steam pipe exceeds a reasonable range, the pressure intensity can be adjusted through the pressure adjusting mechanism, and whether the air leakage of the steam pipe exceeds the reasonable range can be known through the plurality of sensing mechanisms, so that the subsequent maintenance can be facilitated.
Description
Technical Field
The invention relates to the technical field of steam pipelines, in particular to a comprehensive maintenance device for steam pipeline operation.
Background
The steam pipeline has good mechanical property and heat insulation property, can resist the high temperature of 120 ℃ under normal conditions, can resist the high temperature of 180 ℃ by modification or combination with other heat insulation materials, and is suitable for heat insulation projects of various cold and hot water high-temperature and low-temperature pipelines.
Steam line is in order to avoid taking place gas leakage in the use before the operation, need carry out gas leakage detection, and the gas leakage part is usually at the junction of pipeline and pipeline, the junction of pipeline and valve etc. current gas leakage detection equipment relies on various sensors, smart machine usually, and equipment is complicated relatively and relies on electric power, is difficult for maintaining after breaking down, and service environment is also harsher.
Therefore, a steam pipeline operation comprehensive maintenance device is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a steam pipeline operation comprehensive maintenance device which does not depend on electric power, has a simple principle and detects the specific air leakage condition.
In order to achieve the purpose, the invention adopts the following technical scheme:
a steam pipeline operation comprehensive maintenance device comprises a top plate, wherein two frames of a U-shaped structure are symmetrically and fixedly connected to the lower end of the top plate, two composite plates are symmetrically arranged in the frames, each composite plate is composed of two first arc plates and two second arc plates which are symmetrically and integrally formed on two sides of the first arc plate, the length of each first arc plate is larger than the thickness of the corresponding second arc plate, the inner diameter of each first arc plate is larger than the inner diameter of each second arc plate, a sealing gasket is fixedly arranged on one side edge of each composite plate opposite to the corresponding composite plate in a gluing mode, a telescopic mechanism is connected between each composite plate and the same side frame of the composite plate, a box body and a water tank are fixedly connected to the upper end of each composite plate, a first air vent is jointly formed in the lower end of the box body and the composite plates, a piston is hermetically and slidably connected in the box body in the vertical direction, a conductive rod is embedded in the piston, and a power supply device is fixedly installed on one side of the box body, a plurality of induction mechanisms are arranged in the box body at equal intervals, each induction mechanism comprises a first conductive block and a second conductive block which are symmetrically embedded in the inner wall of the box body, and the straight line of the first conductive block and the second conductive block is perpendicular to the axis of the conductive rod, the opposite sides of the first conductive block and the second conductive block are respectively and electrically connected with a first conducting wire and a second conducting wire, the first lead and the second lead are respectively and electrically connected with the positive end and the negative end of the power supply device, the first lead is connected with an intensity indicator lamp in series, the upper end of the piston is abutted with a spring, the upper end of the spring is connected with a pressure adjusting mechanism, the water tank is made of transparent plastic, the water tank intussuseption is filled with the water that has the colour, the water tank communicates with the plywood jointly and has the trachea that is the U type, the trachea seals and runs through the water tank setting, the inlet opening has been seted up to the upper end of water tank.
Preferably, telescopic machanism is including seting up the spout that is close to plywood one side at the frame, the both sides inner wall of spout rotates and is connected with two-way threaded rod, one side fixed mounting of plywood has the motor that is used for driving two-way threaded rod.
Preferably, the pressure adjusting mechanism comprises a threaded hole formed in the upper end of the box body, a one-way threaded rod is connected to the threaded hole in an internal thread manner, a torsion bar is fixedly connected to the upper end of the one-way threaded rod, and a pressing plate is connected to the lower end of the one-way threaded rod in a rotating manner.
Preferably, at least one second vent hole is formed in the pressing plate.
Preferably, the outer surface of the one-way threaded rod is provided with a pressure intensity mark.
Preferably, a one-way switch valve is installed on the air pipe.
Preferably, the intensity indicator lamps in the plurality of sensing mechanisms gradually turn from green to red from bottom to top.
Compared with the prior art, the invention has the beneficial effects that:
1. when the steam pipe is detected to leak gas, the switch valve can be opened to observe whether bubbles are generated in the water tank, and the operation is simple and convenient;
2. when the invention detects whether the air leakage of the steam pipe exceeds a reasonable range, the pressure intensity can be adjusted through the pressure adjusting mechanism, and whether the air leakage of the steam pipe exceeds the reasonable range can be known through the plurality of sensing mechanisms, so that the subsequent maintenance can be facilitated.
Drawings
FIG. 1 is a partial schematic structural view of a steam pipeline operation comprehensive maintenance device according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic side view of a steam pipeline operation comprehensive maintenance device according to the present invention;
FIG. 4 is a schematic structural diagram of a sectional view of a box body of the steam pipeline operation comprehensive maintenance device provided by the invention;
fig. 5 is a schematic structural diagram of a water tank section of a steam pipeline operation comprehensive maintenance device according to the present invention.
In the figure: 1 top plate, 2 frames, 3 bottom plates, 4 rollers, 5 sliding grooves, 6 motors, 7 bidirectional threaded rods, 8 sliding blocks, 9 plywood, 10 connecting rods, 11 box bodies, 12 first vent holes, 13 pistons, 14 conducting rods, 15 first conducting blocks, 16 second conducting blocks, 17 first conducting wires, 18 second conducting wires, 19 pressing plates, 20 second vent holes, 21 unidirectional threaded rods, 22 threaded holes, 23 torsion bars, 24 water tanks, 25 air pipes, 26 water inlet holes, 27 unidirectional switch valves, 28 power supply devices, 29 strength indicating lamps and 30 springs.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a steam pipeline operation is synthesized and is maintained device, including roof 1, two frames 2 that are U type structure of the lower extreme symmetry fixedly connected with of roof 1, the symmetry is equipped with plywood 9 in two frames 2, plywood 9 comprises the second arc board of two symmetry integrated into one piece of first arc board in first arc board both sides, and the length of first arc board is greater than the thickness of second arc board, the internal diameter of first arc board is greater than the internal diameter of second arc board, one side border veneer that two plywood 9 are relative is fixed with sealed the pad, it is sealed to closely laminate through sealed the pad between two first arc boards, it is sealed to closely laminate through sealed pad between second arc board and the steam pipe, the space between two plywood 9 is in sealed environment, provide the detection environment for detecting whether gas leakage of steam pipe.
Each plywood 9 all is connected with telescopic machanism rather than with between one side frame 2, and telescopic machanism is including seting up at frame 2 and being close to the spout 5 of plywood 9 one side, and the both sides inner wall of spout 5 rotates and is connected with two-way threaded rod 7, and one side fixed mounting of plywood 9 has motor 6 that is used for driving two-way threaded rod 7. In the process that the motor 6 drives the bidirectional threaded rod 7 to rotate, the sliding block 8 extends out of or retracts into the plywood 9 under the condition that the sliding block slides in the sliding groove 5.
Wherein the upper end of one of the boards 9 is fixedly connected with a box body 11 and a water tank 24, the lower end of the box body 11 and the board 9 are provided with a first vent hole 12 together, the inside of the box body 11 is connected with a piston 13 in a sealing and sliding way in the vertical direction, a conductive rod 14 is embedded in the piston 13, one side of the box body 11 is fixedly provided with a power supply device 28 for supplying power to an intensity indicator lamp 29 in the following induction mechanism, a plurality of induction mechanisms are arranged in the box body 11 at equal intervals, specifically, the induction mechanism comprises a first conductive block 15 and a second conductive block 16 which are symmetrically embedded in the inner wall of the box body 11, the connecting straight line of the first conductive block 15 and the second conductive block 16 is in a vertical relation with the axis of the conductive rod 14, the piston 13 can only make displacement in the vertical direction along the box body 11, the conductive rod 14 can only move in a plane along the first conductive block 15 and the second conductive block 16 in the plurality of induction mechanisms, one side of the first conductive block 15 opposite to the second conductive block 16 is respectively and electrically connected with a first conductive wire 17 and a second conductive wire 18, the first wire 17 and the second wire 18 are electrically connected to the positive and negative terminals of the power supply unit 28, respectively, and the first wire 17 is connected in series with an intensity indicator lamp 29.
The upper end of piston 13 has been supported and has been had spring 30, and the upper end of spring 30 is connected with pressure adjustment mechanism, and is concrete, and pressure adjustment mechanism is including seting up in the screw hole 22 of box 11 upper end, and screw hole 22 female connection has one-way threaded rod 21, and the upper end fixedly connected with torsion bar 23 of one-way threaded rod 21, and the lower extreme of one-way threaded rod 21 rotates and is connected with clamp plate 19, and one-way threaded rod 21 is rotating the in-process, can produce the not compression volume of equidimension to spring 30, and then produces the effort of equidimension not to piston 13.
At least one second vent hole 20 is opened in the clamp plate 19, and second vent hole 20 communicates with the external world through screw hole 22, and the non-seal space in the top space of clamp plate 19 in box 11 avoids causing the influence to the testing result because of compressed air, and the surface of one-way threaded rod 21 is equipped with the pressure intensity sign, and the detector of being convenient for observes pressure intensity. The intensity indicator light 29 in the plurality of induction mechanisms gradually turns red from green from bottom to top, so that the detection personnel can know whether the normal range is exceeded or not.
When carrying out gas leakage detection to steam conduit, remove this device to the detection position, make steam conduit be in between two plywood 9, make the sealed pad between two plywood 9 closely laminate each other, sealed pad and the outer wall of the steam pipe that awaits measuring closely laminate through telescopic machanism to realize that the steam pipe waits to detect the sealed environment of department.
When the steam pipe is detected to be air-leaked, the one-way switch valve 27 is in an open state, and because the acting force of the piston 13 is larger than that of the air pipe 25, if the air leakage phenomenon exists, the steam can enter the water tank 24 through the air pipe 25, bubbles are generated in the colored water, and the colored water is more obvious in the observation of the air leakage or not, so that the observation of a detector is facilitated;
if there is the gas leakage phenomenon, can estimate the gas leakage standard, if the gas leakage phenomenon is in reasonable within range, then need not follow-up maintenance, if the gas leakage phenomenon exceedes outside reasonable within range, then need follow-up maintenance, whether specifically is in reasonable within range, need adjust the basic condition of the bounce that piston 13 received promptly, observe the speed that piston 13 was upwards promoted by steam, specifically as follows: the one-way switch valve 27 is closed, the one-way threaded rod 21 is rotated through the torsion bar 23, the pressing plate 19 slides up and down under the condition of limited sliding with the box body 11, the compression amount of the spring 30 is changed, the acting force of the spring 30 on the piston 13 is further changed, the pressure on the one-way threaded rod 21 is observed to emphasize the mark until the required mark scale is flush with the upper surface of the box body 11, steam leaked from the steam pipe generates pushing force on the piston 13 through the first vent hole 12, the piston 13 is pushed upwards in the box body 11 as long as the leaked steam in unit time is enough, two ends of the conducting rod 14 in the piston 13 are respectively contacted with the first conducting block 15 and the second conducting block 16 in the induction mechanism, a circuit where the strength indicator lamp 29 is located is switched on, and the strength indicator lamp 29 reminds a detector whether the strength indicator lamp exceeds the standard or not.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a steam line operation comprehensive maintenance device, includes roof (1), its characterized in that: the lower extreme symmetry fixedly connected with of roof (1) is two frames (2) that are U type structure, two the symmetry is equipped with plywood (9) in frame (2), plywood (9) comprise the second arc board of two symmetry integrated into one piece in first arc board both sides by a first arc board, and the length of first arc board is greater than the thickness of second arc board, the internal diameter of first arc board is greater than the internal diameter of second arc board, two one side border veneer that plywood (9) is relative is fixed with sealed the pad, each plywood (9) all are connected with telescopic machanism rather than between same side frame (2), one of them the upper end fixedly connected with box (11) and water tank (24) of plywood (9), first air vent (12) have been seted up jointly to the lower extreme of box (11) and plywood (9), sealed sliding connection has piston (13) in box (11) the inherent vertical direction, the power supply device is characterized in that a conductive rod (14) is embedded in the piston (13), a power supply device (28) is fixedly installed on one side of the box body (11), a plurality of induction mechanisms are arranged in the box body (11) at equal intervals and comprise a first conductive block (15) and a second conductive block (16) which are symmetrically embedded in the inner wall of the box body (11), a straight line connecting the first conductive block (15) and the second conductive block (16) is perpendicular to the axis of the conductive rod (14), a first lead (17) and a second lead (18) are respectively and electrically connected to one side, opposite to each other, of the first conductive block (15) and the second conductive block (16), the first lead (17) and the second lead (18) are respectively and electrically connected with the positive end and the negative end of the power supply device (28), a strength indicator lamp (29) is connected to the first lead (17) in series, a spring (30) is abutted to the upper end of the piston (13), the upper end of spring (30) is connected with pressure adjustment mechanism, water tank (24) adopt transparent plastic to make, water tank (24) intussuseption is filled with the water that has the colour, water tank (24) and plywood (9) common intercommunication have trachea (25) that are the U type, trachea (25) are sealed to be run through water tank (24) and set up, inlet opening (26) have been seted up to the upper end of water tank (24).
2. The steam pipeline operation comprehensive maintenance device according to claim 1, characterized in that: telescopic machanism is including offering spout (5) that are close to plywood (9) one side in frame (2), the both sides inner wall of spout (5) rotates and is connected with two-way threaded rod (7), one side fixed mounting of plywood (9) has motor (6) that are used for driving two-way threaded rod (7).
3. The steam pipeline operation comprehensive maintenance device according to claim 1, characterized in that: the pressure adjusting mechanism comprises a threaded hole (22) formed in the upper end of the box body (11), a one-way threaded rod (21) is connected to the threaded hole (22) in an internal thread mode, a torsion bar (23) is fixedly connected to the upper end of the one-way threaded rod (21), and a pressing plate (19) is connected to the lower end of the one-way threaded rod (21) in a rotating mode.
4. The steam pipeline operation comprehensive maintenance device according to claim 3, characterized in that: at least one second vent hole (20) is formed in the pressing plate (19).
5. The steam pipeline operation comprehensive maintenance device according to claim 3, characterized in that: the outer surface of the one-way threaded rod (21) is provided with a pressure intensity mark.
6. The steam pipeline operation comprehensive maintenance device according to claim 1, characterized in that: and a one-way switch valve (27) is arranged on the air pipe (25).
7. The steam pipeline operation comprehensive maintenance device according to claim 1, characterized in that: and the intensity indicator lamps (29) in the plurality of induction mechanisms gradually change from green to red from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567441.XA CN113551155A (en) | 2021-05-24 | 2021-05-24 | Steam pipeline operation comprehensive maintenance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567441.XA CN113551155A (en) | 2021-05-24 | 2021-05-24 | Steam pipeline operation comprehensive maintenance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113551155A true CN113551155A (en) | 2021-10-26 |
Family
ID=78101869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110567441.XA Pending CN113551155A (en) | 2021-05-24 | 2021-05-24 | Steam pipeline operation comprehensive maintenance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113551155A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719126A (en) * | 2022-03-25 | 2022-07-08 | 福州卓能科技有限公司 | Heat-insulating sleeve of online overhead steam pipe network and manufacturing and mounting method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053136A (en) * | 1975-06-05 | 1977-10-11 | The Tappan Company | Control circuit and adjustable valve for a gas appliance |
| CN206973278U (en) * | 2017-05-26 | 2018-02-06 | 河南顺达化工科技有限公司 | A kind of gas pipeline gas leak detection device |
| CN208142710U (en) * | 2018-05-25 | 2018-11-23 | 渠严磊 | A kind of distribution line maintenance device |
| CN208670609U (en) * | 2018-09-18 | 2019-03-29 | 亿利洁能科技（乐陵）有限公司 | A kind of device for preventing leakage of steam pipeline |
| CN110571707A (en) * | 2019-10-18 | 2019-12-13 | 叶振磊 | Auxiliary tool for mounting overhead line power insulator |
| CN211095464U (en) * | 2019-10-09 | 2020-07-28 | 吉林大学 | Bracket for fixing hands and feet |
| CN211767860U (en) * | 2019-12-24 | 2020-10-27 | 江苏邦茨石化设备制造有限公司 | Breathing manhole suitable for emergency discharge of storage tank under fire working condition |
| CN212059212U (en) * | 2020-05-19 | 2020-12-01 | 上海阁杰测控技术有限公司 | Boiler explosion-proof pressure detection instrument |
| CN212252115U (en) * | 2020-05-20 | 2020-12-29 | 天津驰伟科技有限责任公司 | Oil gas leakage detection device |
-
2021
- 2021-05-24 CN CN202110567441.XA patent/CN113551155A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053136A (en) * | 1975-06-05 | 1977-10-11 | The Tappan Company | Control circuit and adjustable valve for a gas appliance |
| CN206973278U (en) * | 2017-05-26 | 2018-02-06 | 河南顺达化工科技有限公司 | A kind of gas pipeline gas leak detection device |
| CN208142710U (en) * | 2018-05-25 | 2018-11-23 | 渠严磊 | A kind of distribution line maintenance device |
| CN208670609U (en) * | 2018-09-18 | 2019-03-29 | 亿利洁能科技（乐陵）有限公司 | A kind of device for preventing leakage of steam pipeline |
| CN211095464U (en) * | 2019-10-09 | 2020-07-28 | 吉林大学 | Bracket for fixing hands and feet |
| CN110571707A (en) * | 2019-10-18 | 2019-12-13 | 叶振磊 | Auxiliary tool for mounting overhead line power insulator |
| CN211767860U (en) * | 2019-12-24 | 2020-10-27 | 江苏邦茨石化设备制造有限公司 | Breathing manhole suitable for emergency discharge of storage tank under fire working condition |
| CN212059212U (en) * | 2020-05-19 | 2020-12-01 | 上海阁杰测控技术有限公司 | Boiler explosion-proof pressure detection instrument |
| CN212252115U (en) * | 2020-05-20 | 2020-12-29 | 天津驰伟科技有限责任公司 | Oil gas leakage detection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719126A (en) * | 2022-03-25 | 2022-07-08 | 福州卓能科技有限公司 | Heat-insulating sleeve of online overhead steam pipe network and manufacturing and mounting method thereof |
| CN114719126B (en) * | 2022-03-25 | 2023-10-13 | 福州卓能科技有限公司 | Thermal insulation sleeve of online overhead steam pipe network and manufacturing and mounting method thereof |
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Application publication date: 20211026 |
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| RJ01 | Rejection of invention patent application after publication |