CN112731553B - Recovery device - Google Patents
Recovery device Download PDFInfo
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- CN112731553B CN112731553B CN202011611333.XA CN202011611333A CN112731553B CN 112731553 B CN112731553 B CN 112731553B CN 202011611333 A CN202011611333 A CN 202011611333A CN 112731553 B CN112731553 B CN 112731553B
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- chamber
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- heated surface
- gland
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
Abstract
The invention provides a recovery device, which relates to the technical field of pipeline ball passing tests and comprises a pipeline and a recoverer, wherein a heated surface pipe comprises a first end and a second end, one end of the pipeline is used for being communicated with the first end of the heated surface pipe, the other end of the pipeline is communicated with the recoverer, and the recoverer is placed at the second end of the heated surface pipe and used for recovering steel balls and compressed air. The invention solves the technical problems of low ball passing efficiency and labor waste in ball passing tests, and realizes that the ball serving point and the ball receiving point are positioned at the same end of the heated surface pipe.
Description
Technical Field
The invention relates to the technical field of pipeline ball passing tests, in particular to a recovery device.
Background
At present, the blockage of the heated surface pipe by impurities is the main reason of frequent tube explosion of a boiler, so that the ball passing test of the heated surface pipe before installation and combination is an essential link for removing the impurities in the heated surface pipe.
The conventional ball passing mode is that two persons are respectively arranged at two ends of the heated surface pipe, one person serves the ball, the other person receives the ball, then the ball received by the ball receiver is transmitted to the ball receiver, and the process is repeated. It should be noted that, the heated surface tubes of the large-scale boiler required to be subjected to the ball passing test are more than 10 million, and the heated surface tubes are long, so that the ball passing efficiency is low by adopting the conventional ball passing mode.
Disclosure of Invention
The invention aims to provide a recycling device to solve the technical problem that the ball passing efficiency is low when a ball passing test is carried out in the related technology.
In order to solve the technical problems, the technical means adopted by the invention are as follows:
the invention provides a recovery device, comprising: a pipeline and a recoverer;
the heated surface pipe comprises a first end and a second end, one end of the pipeline is communicated with the first end of the heated surface pipe, the other end of the pipeline is communicated with the recoverer, and the recoverer is placed at the second end of the heated surface pipe and used for recovering the steel balls and the compressed air.
As a further technical solution, the recoverer comprises a bracket and a recovery chamber, wherein the recovery chamber is mounted on the bracket;
the recovery chamber comprises an air filter chamber and a steel ball receiving chamber which are communicated with the pipeline, one end of the steel ball receiving chamber is communicated with the air filter chamber, and the other end of the steel ball receiving chamber is provided with a discharging ball valve.
As a further technical scheme, the air filter chamber is installed in the support, the pipeline is connected to the upper end of the air filter chamber, the steel ball receiving chamber is located at the bottom end of the air filter chamber, a receiving disc is arranged on the ground, and the receiving disc is opposite to the discharging ball valve.
As a further technical solution, the air filter chamber comprises a first gland, a second gland and an air filter;
the first pressing cover and the second pressing cover are connected through a fixed adjusting rod, the second pressing cover is connected to the support, and two ends of the air filter are abutted to the first pressing cover and the second pressing cover respectively.
As a further technical scheme, the recovery chamber comprises a steel ball buffer chamber, one end of the steel ball buffer chamber is communicated with the air filter chamber, and the other end of the steel ball buffer chamber is communicated with the steel ball receiving chamber;
the steel ball buffer chamber comprises a first shell and a buffer piece, the buffer piece is arranged in the first shell through a support frame, and the buffer piece is located on the motion path of the steel ball.
As a further technical scheme, a guide pipe is arranged in the air filtering chamber, one end of the guide pipe is communicated with the pipeline, and the other end of the guide pipe extends to the steel ball buffering chamber.
As a further technical scheme, the inner wall of the first shell is provided with a protection plate.
As a further technical scheme, the recovery chamber comprises a sundries separating chamber, one end of the sundries separating chamber is communicated with the air filtering chamber, and the other end of the sundries separating chamber is communicated with the steel ball receiving chamber;
the sundry separating chamber comprises a second shell and a dustproof cover, the dustproof cover surrounds the inner wall of the second shell, a first through hole is formed in the dustproof cover, and the first through hole is used for enabling the steel balls and sundries to pass through.
As a further technical solution, the dust cap is tapered, and the top end of the taper faces the ball receiving chamber.
As a further technical scheme, the first end of the heated surface pipe is communicated with a connecting piece through an adjusting bolt, and the free end of the connecting piece is communicated with the pipeline.
Compared with the prior art, the recovery device provided by the invention has the technical advantages that:
the recovery device provided by the invention comprises a pipeline and a recoverer, wherein the heated surface pipe comprises a first end and a second end, one end of the pipeline is used for being communicated with the first end of the heated surface pipe, the other end of the pipeline is communicated with the recoverer, and the recoverer is placed at the second end of the heated surface pipe and is used for recovering steel balls and compressed air.
The recovery device provided by the invention has the advantages that:
when the recovery device is used for a ball passing test, a ball dispenser puts a steel ball into the second end of the heated surface pipe and introduces compressed air into the heated surface pipe, so that the steel ball sequentially passes through the heated surface pipe, the first end of the heated surface pipe and the pipeline from the second end of the heated surface pipe under the pushing of the compressed air, finally enters the recoverer together with the compressed air, the ball passing test is completed once, and then the ball dispenser can directly take out the steel ball from the recoverer to continue to pass through the next heated surface pipe. The ball passing test can show that the steel ball directly returns to the ball serving position after completing one ball passing test, and the middle manual transmission process is omitted, so that the working time of the ball passing test is shortened, and the ball passing efficiency is improved. Meanwhile, only one person is needed to finish the ball serving and receiving, so that the labor is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly described below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a recycling apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic view of a recycling chamber of a recycling apparatus provided in accordance with an embodiment of the present invention;
FIG. 3 is a top view of a first gland of the recovery unit provided in accordance with an embodiment of the present invention;
FIG. 4 is a top view of a second gland of the recovery device provided in accordance with an embodiment of the present invention;
FIG. 5 is a top view of a ball buffer chamber of the recycling apparatus according to an embodiment of the present invention;
FIG. 6 is a top view of a debris separator of the recycling apparatus according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a connector of a recycling appliance in accordance with an embodiment of the present invention;
fig. 8 is a sectional view of a connector of a recycling apparatus according to an embodiment of the present invention.
An icon:
100-a pipe; 200-heating surface tube; 300-steel ball; 400-a scaffold;
500-a recovery chamber; 510-an air filter chamber; 511-a first gland; 512-a second gland; 513-air filter; 514-fixed regulating rod; 515-a baffle ring; 516-a gasket; 520-a steel ball receiving chamber; 521-a discharge ball valve; 530-receiving disc; 540-steel ball buffer chamber; 541-a first housing; 542-a buffer; 543-a support frame; 550-a guide tube; 560-impurity separation chamber; 561-a second housing; 562-a dust cover;
600-adjusting the bolt; 700-connecting piece.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The recycling device provided by the embodiment comprises a pipeline 100 and a recoverer, the heated surface pipe 200 comprises a first end and a second end, one end of the pipeline 100 is communicated with the first end of the heated surface pipe 200, the other end of the pipeline is communicated with the recoverer, and the recoverer is placed at the second end of the heated surface pipe 200 and used for recycling the steel balls 300 and the compressed air.
Specifically, referring to fig. 1, the upper end of the heated surface pipe 200 is a first end, the lower end is a second end, the pipeline 100 is U-shaped, the left end of the pipeline 100 is connected with the first end of the heated surface pipe 200, the right end is connected with the recoverer, and the recoverer is located at the second end of the heated surface pipe 200. Wherein, the second end of the heated surface pipe 200 is provided with a compressed air pipe, the steel ball 300 is placed into the second end of the heated surface pipe 200, and enters the recoverer from the heated surface pipe 200 through the pipeline 100 under the push of the compressed air.
In practical application, a service person firstly puts the steel ball 300 into the second end of the heated surface pipe 200, and then introduces compressed air into the heated surface pipe 200, so that the steel ball 300 sequentially passes through the heated surface pipe 200, the first end of the heated surface pipe 200 and the pipeline 100 from the second end of the heated surface pipe 200 under the pushing of the compressed air, finally enters the recoverer together with impurities in the heated surface pipe 200 under the driving of the compressed air, a ball passing test is completed, and then the service person can directly take the steel ball 300 out of the recoverer to continue to pass balls through the next heated surface pipe 200. It can be seen from the ball passing test that the steel ball 300 directly returns to the ball serving position after completing the ball passing test once, so that the manual transmission process in the middle is omitted, the working time of the ball passing test is shortened, and the ball passing efficiency is improved. Meanwhile, only one person is needed to finish the ball serving and receiving, so that the labor is saved.
In an optional technical solution of this embodiment, the retriever includes a bracket 400 and a recovery chamber 500, the recovery chamber 500 is mounted to the bracket 400, the recovery chamber 500 includes an air filter chamber 510 and a steel ball receiving chamber 520 which are communicated with the duct 100, one end of the steel ball receiving chamber 520 is communicated with the air filter chamber 510, and the other end is provided with a discharge ball valve 521.
In this embodiment, referring to fig. 2, an air filter chamber 510 is installed in the bracket 400 for filtering the compressed air flowing from the second end of the heated dough pipe 200 to the recycler, a steel ball receiving chamber 520 is communicated with the air filter chamber 510 for recycling the foreign matters and the steel balls 300 in the heated dough pipe 200, a discharge ball valve 521 is used as a switch of the steel ball receiving chamber 520, the steel ball receiving chamber 520 can release the foreign matters and the steel balls 300 in an open state, and the compressed air is discharged from the air filter chamber 510 to the outside in a closed state.
Referring to fig. 1, in the ball passing test, the discharging ball valve 521 is closed, the steel ball 300 is placed into the second end of the heated surface pipe 200, compressed air is introduced into the second end of the heated surface pipe 200, the compressed air pushes the steel ball 300 to roll, the steel ball 300 removes impurities in the heated surface pipe 200, and under the condition that the compressed air is continuously introduced, the impurities and the steel ball 300 enter the steel ball receiving chamber 520 together, at this time, because the discharging ball valve 521 is in a closed state, the compressed air is filtered into clean air through the air filter chamber 510 and is discharged to the outside, and finally, the discharging ball valve 521 is opened, and the impurities and the steel ball 300 are released. Therefore, the problem that the steel ball 300 is lost due to the fact that the steel ball 300 and the ball receiver rebound in a traditional ball receiving mode is solved, the steel ball 300 rebounds to the hot surface pipe 200 is also avoided, and unnecessary troubles are eliminated.
In an optional technical scheme of the embodiment, the air filtering chamber 510 is mounted on the bracket 400, the pipeline 100 is connected to the upper end of the air filtering chamber 510, the steel ball receiving chamber 520 is located at the bottom end of the air filtering chamber 510, a receiving tray 530 is arranged on the ground, and the receiving tray 530 is opposite to the discharging ball valve 521.
Specifically, referring to fig. 2, the air filter chamber 510 has an upper end communicating with the duct 100, a lower end connected to the bracket 400 and connected to the upper end of the ball receiving chamber 520, a discharge ball valve 521 provided at the lower end of the ball receiving chamber 520, and a receiving tray 530 placed at the lower end of the discharge ball valve 521. It should be added that, in the ball passing test, the heated surface tubes 200 are placed side by side and in parallel on a horizontal plane, and the moving path of the steel ball 300 in the recovery chamber 500 is perpendicular to the horizontal plane, so that the end of the pipe 100 communicating with the recovery chamber 500 is bent toward the ground.
After the compressed air moves the steel ball 300 to the ball receiving chamber 520, since the discharge ball valve 521 is in a closed state, the compressed air flows upward and is discharged to the outside through the air filter chamber 510. After the compressed air is exhausted, the discharging ball valve 521 is opened, the impurities and the steel ball 300 automatically fall to the receiving disc 530, the ball dispenser can directly take the steel ball 300 from the receiving disc 530, and the impurities are conveyed to a designated recovery point. Therefore, compared with the traditional ball receiving mode, the recycling chamber 500 reduces dust at the outlet of the steel ball 300, avoids pollution to the atmosphere, and guarantees the breathing health of a ball service person.
In an optional solution of this embodiment, the air filter chamber 510 includes a first gland 511, a second gland 512, and an air filter 513, the first gland 511 and the second gland 512 are connected by a fixing adjustment rod 514, the second gland 512 is connected to the bracket 400, and two ends of the air filter 513 abut against the first gland 511 and the second gland 512, respectively.
Specifically, with reference to fig. 3, the first gland 511 is circular, the middle portion of the first gland is provided with a second through hole, the second through hole is provided with a joint, the pipeline 100 is communicated with the joint through a hoop, with reference to fig. 4, the second gland 512 is square and is welded to the bracket 400, the middle portion of the second gland 512 is provided with an opening, the opening is communicated with the steel ball receiving chamber 520, and a plurality of fixed adjusting rods 514 are arranged around the opening at intervals. Referring to fig. 2, the lower end of the fixed adjusting rod 514 is in threaded connection with the second pressing cover 512 and is fastened by a nut, the upper surface of the second pressing cover 512 is provided with a retaining ring 515, a sealing gasket 516 is placed in the retaining ring 515, the lower end of the air filter 513 is positioned in the retaining ring 515 and is abutted against the sealing gasket 516, the first pressing cover 511 is covered on the upper end of the air filter 513 and is in threaded connection with the upper end of the fixed adjusting rod 514 and is also fastened by a nut, and the same retaining ring 515 and the sealing gasket 516 are arranged between the first pressing cover 511 and the air filter 513. By adjusting the position of the nut on the fixed adjusting rod 514, the distance between the first pressing cover 511 and the second pressing cover 512 can be reduced, so that the air filter 513 between the two sealing gaskets 516 is compressed, and the sealing performance of the air filter 513 in contact with the first pressing cover 511 and the second pressing cover 512 is ensured.
In an optional technical solution of this embodiment, the recycling chamber 500 includes a steel ball buffering chamber 540, one end of the steel ball buffering chamber 540 is communicated with the air filtering chamber 510, and the other end is communicated with the steel ball receiving chamber 520, the steel ball buffering chamber 540 includes a first housing 541 and a buffer 542, the buffer 542 is disposed inside the first housing 541 through a supporting frame 543, and the buffer 542 is located on a moving path of the steel ball 300.
In the optional technical solution of this embodiment, the recycling chamber 500 includes a debris separating chamber 560, one end of the debris separating chamber 560 is communicated with the air filtering chamber 510, the other end is communicated with the steel ball receiving chamber 520, the debris separating chamber 560 includes a second housing 561 and a dust cap 562, the dust cap 562 is disposed around the inner wall of the second housing 561, and the dust cap 562 is provided with a first through hole, and the first through hole is used for passing through the steel ball 300 and the debris.
Specifically, referring to fig. 2, the upper end of the first housing 541 is connected to the second gland 512, and is communicated with the second gland 512 through an opening of the second gland 512, the lower end of the first housing 541 is connected to the upper end of the second housing 561, and the lower end of the second housing 561 is connected to the steel ball receiving chamber 520. Referring to fig. 5, the supporting frame 543 is connected to the inner wall of the first housing 541, and the buffer 542 is a sphere, but other polyhedrons may be adopted, and are disposed on the supporting frame 543 and located on the axis of the first housing 541. Referring to fig. 6, the dust cover 562 is disposed at a connection portion between the first housing 541 and the second housing 561, and the first housing 541 and the second housing 561 are communicated with each other through the first through hole.
As shown in fig. 2, when the steel ball 300 enters the recovery chamber 500 from the duct 100, it first enters the ball buffer chamber 540 through the air filter chamber 510 and collides with the buffer 542, the impact force of the steel ball 300 is reduced, and then the steel ball 300 is rebounded by the first housing 541, enters the second housing 561 through the first through hole, and finally falls into the ball receiving chamber 520. The impurities entering the recycling chamber 500 sequentially pass through the air filter chamber 510, the steel ball buffer chamber 540 and the first through hole to enter the steel ball receiving chamber 520 under the driving of compressed air, wherein the impurities with smaller particles are lifted upwards under the action of the compressed air and fall into the steel ball receiving chamber 520 again under the shielding of the dustproof cover 562, after the compressed air is completely removed, the discharge ball valve 521 is opened, and the impurities and the steel ball 300 are released to the material receiving tray 530 together.
As shown in fig. 2, a guide pipe 550 is provided in the air filter chamber 510, one end of the guide pipe 550 communicates with the duct 100, and the other end extends to the ball buffer chamber 540.
Specifically, the upper end of the guide tube 550 is connected to the joint, and the lower end thereof extends above the buffer 542 through the opening of the second gland 512. Guide tube 550 plays the guide effect to steel ball 300, and guide steel ball 300 moves to bolster 542 along specific route to collide with bolster 542, avoided the direct striking blowing ball valve 521 of steel ball 300, simultaneously, bounce-back to first casing 541 and cause the damage to first casing 541 after avoiding steel ball 300 and bolster 542 striking, inner wall at first casing 541 is equipped with the guard plate, and in this application, the polyethylene material is preferentially selected for use to the guard plate. In addition, the guide pipe 550 has an isolation effect on the sundries, when the sundries are brought to the recovery chamber 500 by compressed air, the sundries directly enter the steel ball buffer chamber 540 along the guide pipe 550, so that the contact with the air filter chamber 510 is avoided, the cleanness of the air filter chamber 510 is ensured, and the air filter 513 is also protected.
In an alternative embodiment of this embodiment, dust cap 562 is tapered with the top end of the taper facing ball receiving chamber 520.
Specifically, as shown in fig. 2, the longitudinal section of the dust cap 562 is in a shape of a Chinese character 'ba', the top end of the Chinese character 'ba' is downward, the sidewall of the first through hole extends downward for a certain distance, the longitudinal section of the second housing 561 is also in a shape of a Chinese character 'ba', and the top end of the Chinese character 'ba' is also downward. When the impurities with smaller particles are lifted upwards, the dust cap 562 blocks the impurities from continuing to move upwards, and the impurities fall to the steel ball receiving chamber 520 along the slope of the dust cap 562 and the second housing 561.
In an optional technical solution of this embodiment, the first end of the heated surface tube 200 is communicated with the connecting member 700 through the adjusting bolt 600, and the free end of the connecting member 700 is communicated with the pipeline 100.
Specifically, referring to fig. 7 and 8, one end of the connecting member 700 is sleeved on the heated surface tube 200, and a trapezoidal rubber pad is disposed at an axial abutting position of the connecting member 700 and the heated surface tube 200, so as to realize the sealing connection between the connecting member 700 and the heated surface tube 200; the adjusting bolt 600 is sleeved on the connecting piece 700, and the connecting piece 700 can be tightly abutted with the heated surface pipe 200 in the radial direction by screwing the adjusting bolt 600; the pipe 100 is sleeved at the other end of the connecting member 700 and fastened by a hoop.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein, and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (6)
1. A recycling apparatus, comprising: a conduit (100) and a recuperator;
the heated surface pipe (200) comprises a first end and a second end, one end of the pipeline (100) is used for being communicated with the first end of the heated surface pipe (200), the other end of the pipeline is communicated with the recoverer, and the recoverer is placed at the second end of the heated surface pipe (200) and used for recovering the steel balls (300) and the compressed air;
the retriever comprises a bracket (400) and a recovery chamber (500), wherein the recovery chamber (500) is mounted on the bracket (400);
the recovery chamber (500) comprises an air filter chamber (510) and a steel ball receiving chamber (520) which are communicated with the pipeline (100), one end of the steel ball receiving chamber (520) is communicated with the air filter chamber (510), and the other end of the steel ball receiving chamber is provided with a discharging ball valve (521);
the air filter chamber (510) comprises a first gland (511), a second gland (512) and an air filter (513);
the first gland (511) and the second gland (512) are connected through a fixed adjusting rod (514), the second gland (512) is connected to the bracket (400), and two ends of the air filter (513) are respectively abutted to the first gland (511) and the second gland (512);
the recovery chamber (500) comprises a steel ball buffer chamber (540), one end of the steel ball buffer chamber (540) is communicated with the air filter chamber (510), and the other end is communicated with the steel ball receiving chamber (520);
the steel ball buffer chamber (540) comprises a first shell (541) and a buffer piece (542), the buffer piece (542) is arranged inside the first shell (541) through a support frame (543), and the buffer piece (542) is positioned on the motion path of the steel ball (300);
the recovery chamber (500) comprises a sundries separating chamber (560), one end of the sundries separating chamber (560) is communicated with the air filter chamber (510), and the other end of the sundries separating chamber is communicated with the steel ball receiving chamber (520);
the sundry separating chamber (560) comprises a second shell (561) and a dustproof cover (562), the dustproof cover (562) surrounds the inner wall of the second shell (561), a first through hole is formed in the dustproof cover (562), and the first through hole is used for allowing a steel ball (300) and sundries to pass through.
2. The recycling apparatus according to claim 1, wherein said air filtering chamber (510) is installed in said frame (400), said duct (100) is connected to the upper end of said air filtering chamber (510), said steel ball receiving chamber (520) is located at the bottom end of said air filtering chamber (510), a receiving tray (530) is provided on the ground, said receiving tray (530) is opposite to said discharging ball valve (521).
3. The recycling apparatus according to claim 1, wherein a guide pipe (550) is provided in said air filtering chamber (510), one end of said guide pipe (550) is communicated with said duct (100), and the other end thereof is extended to said ball buffer chamber (540).
4. A recovery device according to claim 1, characterized in that the inner wall of the first housing (541) is provided with shielding plates.
5. The recycling apparatus according to claim 1, wherein the dust cap (562) is tapered with the top end of the taper facing the ball receiving chamber (520).
6. The recycling apparatus according to claim 1, wherein the first end of the heated surface pipe (200) communicates with a connector (700) through an adjusting bolt (600), and the free end of the connector (700) communicates with the pipeline (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011611333.XA CN112731553B (en) | 2020-12-29 | 2020-12-29 | Recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011611333.XA CN112731553B (en) | 2020-12-29 | 2020-12-29 | Recovery device |
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| CN112731553A CN112731553A (en) | 2021-04-30 |
| CN112731553B true CN112731553B (en) | 2023-02-28 |
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| CN202011611333.XA Active CN112731553B (en) | 2020-12-29 | 2020-12-29 | Recovery device |
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| WO2016201584A1 (en) * | 2015-06-18 | 2016-12-22 | Pure Technologies Ltd. | Detection of pipeline exposure in water crossings |
| CN207457526U (en) * | 2017-11-02 | 2018-06-05 | 无锡市海航电液伺服系统股份有限公司 | A kind of hose through ball test device |
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| CN109765039A (en) * | 2017-11-09 | 2019-05-17 | 无锡华光锅炉股份有限公司 | A kind of dedicated logical ball device |
| CN207779990U (en) * | 2018-01-09 | 2018-08-28 | 江苏瑾辉生物科技有限公司 | A kind of cigarette smoke selective filter collection device and fume component analysis device |
| CN209858759U (en) * | 2019-06-03 | 2019-12-27 | 山东电力建设第三工程有限公司 | Ball receiving device for heating surface tube bank ball passing test |
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