CN112923983B - Device for detecting pipeline flow of dry oil centralized lubrication system - Google Patents
Device for detecting pipeline flow of dry oil centralized lubrication system Download PDFInfo
- Publication number
- CN112923983B CN112923983B CN201911245291.XA CN201911245291A CN112923983B CN 112923983 B CN112923983 B CN 112923983B CN 201911245291 A CN201911245291 A CN 201911245291A CN 112923983 B CN112923983 B CN 112923983B
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- motor
- milling
- flow
- displacement sensor
- trapezoidal thread
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- 238000005461 lubrication Methods 0.000 title claims abstract description 24
- 238000003801 milling Methods 0.000 claims abstract description 60
- 238000006073 displacement reaction Methods 0.000 claims abstract description 32
- 230000033001 locomotion Effects 0.000 claims abstract description 22
- 239000004519 grease Substances 0.000 claims abstract description 11
- 230000001050 lubricating effect Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 2
- 239000003921 oil Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000010705 motor oil Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a device for detecting the flow rate of a pipeline of a dry oil centralized lubrication system, which comprises a frame assembly, a motor transmission assembly, a flow scale display assembly and a flow digital display assembly, wherein the frame assembly comprises a bottom plate, an L plate and 2 fixed L plate bolts, and the frame assembly is used for providing support and installation positions for the motor assembly and the like; the motor transmission assembly consists of a motor, 4 bolts for installing the motor, a pinion and a large gear, and is used for converting the rotary motion generated by the motor driven by high-pressure lubricating grease into measurable linear motion; the flow scale display assembly comprises a milling table indication magnetic ring sleeve and a graduated scale, and is used for directly reading flow on the graduation; the flow digital display assembly comprises a trapezoid threaded shaft, a milling groove displacement sensor, a cable and a display device. The scheme has simple structure and strong pollution resistance, adopts scale display and digital display to check each other, and has high accuracy compared with similar products.
Description
Technical Field
The invention relates to a detection device, in particular to a device for detecting the pipeline flow of a dry oil centralized lubrication system, and belongs to the technical field of maintenance of hydraulic and lubrication equipment.
Background
The double-line terminal type grease centralized lubrication system is grease lubrication equipment commonly used in metallurgical equipment, and mainly comprises a lubrication pump, a reversing valve, two main pipelines, a branch pipeline, a double-line distributor, a pressure difference switch (a pressure control valve), an electric cabinet, pipeline accessories and the like.
When the system pressure fails to reach the set point for a prescribed period of time, the system will automatically shut down the pump and give an over-time alarm, with 60% of the failure being caused by pipe leaks.
The lubricating points of the double-line terminal type dry oil centralized lubricating system often reach more than 300, the metallurgical system equipment environment is bad, and in production, because the newly-added equipment needs to be provided with bypass on two main pipelines, the complexity and the concealment of the pipeline system are increased, and the oil leakage point is very difficult to check. Therefore, a new solution is urgently needed to solve the above technical problems.
Disclosure of Invention
The invention aims at the problems existing in the prior art, and provides a device for detecting the pipeline flow of a dry oil centralized lubrication system.
In order to achieve the above purpose, the technical scheme of the invention is that the device for detecting the flow rate of the pipeline of the dry oil centralized lubrication system comprises a frame assembly, a motor transmission assembly, a flow scale display assembly and a flow digital display assembly, wherein the frame assembly comprises a bottom plate, an L plate and 2 fixed L plate bolts, wherein a vertical plate is machined on the bottom plate, and the frame assembly is used for providing support and installation positions for the motor assembly and the like; the motor transmission assembly consists of a motor, 4 bolts for installing the motor, a pinion and a large gear, and is used for converting the rotary motion generated by the motor driven by high-pressure lubricating grease into measurable linear motion; the flow scale display assembly comprises a milling table indication magnetic ring sleeve 13 and a graduated scale 9, and is used for directly reading flow on scales; the flow digital display assembly comprises a trapezoid threaded shaft 12, a milling groove displacement sensor 10, a cable 4 and a display device 5, and the function of the flow digital display assembly is to digitally display data measured by the displacement sensor in the display device and further transmit the data to other control units.
As an improvement of the present invention, the trapezoidal thread shaft is used to convert the rotational motion of the motor shaft into a linear motion through the rotational motion of the gear. The left end of the trapezoidal thread shaft is provided with an assembly shaft diameter which is in clearance fit with a mounting hole of the L plate, the right end of the trapezoidal thread shaft is provided with a hole clearance fit corresponding to the bottom plate, the rightmost end of the trapezoidal thread shaft is provided with a shaft diameter matched with the gear, and a key slot is machined on the shaft diameter and used for transmitting the rotation of the gear 1 to the trapezoidal thread shaft. The threads in the trapezoidal thread shaft can be processed into threads with different tooth shapes according to different requirements and processing conditions.
As an improvement of the invention, the milling table indication magnetic ring sleeve is a key for converting the rotation motion of the trapezoid threaded shaft into the linear motion, an inner hole is processed in the center of the milling table indication magnetic ring sleeve, the diameter of the inner hole is the same as the diameter of the shaft matched with the milling groove displacement sensor, and a key slot is processed on the inner hole, so that the milling table indication magnetic ring sleeve is prevented from rotating.
As an improvement of the invention, the milling table indication magnetic ring sleeve is not only a graduated indication needle, but also a magnetic ring. The step is milled on the milling machine, an indicating needle is formed, when the trapezoidal thread shaft rotates, the part of the milling machine indicating magnetic ring sleeve meshed with the trapezoidal thread shaft is the part, the milling machine indicating magnetic ring sleeve is driven to move outside the graduated scale, and the actually-generated flow is read according to the graduated scale; another function of the milling table indication magnetic ring sleeve is that the magnetic ring and the magnetic rod relatively move, so that the position change of the displacement sensor is realized. A groove is formed in the milling table to indicate the axial direction of the magnetic ring sleeve, the magnetic ring is arranged in the groove, and the magnetic ring sleeve is formed by plugging the magnetic ring with a plastic ring.
As an improvement of the invention, the milling groove displacement sensor is a device for accurately measuring, displaying and transmitting data of the distance of the milling table indicating magnetic ring sleeve in linear movement. The anti-thrust flange comprises a hollow screw rod, a flange screw sleeve, a magnetic rod, a coil and an insulating sealing ring 45, wherein a thrust flange 41 is processed on the left side of the flange screw sleeve 42, a mounting bolt hole 44 is formed on the thrust flange, an internal thread 46 is processed on the right end of the thrust flange, a thread 43 is arranged on the rightmost end of the hollow screw rod 52 and is used for fixing the milling groove displacement sensor 10 on a bottom plate and is fixed by a nut 14, and a thread 47 is processed on the leftmost end of the thrust flange and is used for being matched and connected with the internal thread 46 of the flange screw sleeve 42; the upper end of the middle working position of the hollow screw 52 is provided with a key slot 50 which is matched with the key slot 33 of the milling station indication magnetic ring sleeve, and a deep hole 51 is processed in the center for installing the magnetic rod 48.
The method for installing the device for detecting the pipeline flow of the dry oil centralized lubrication system comprises the following steps:
The motor 11 is installed in the base plate 8, the motor is fixed on the base plate by the bolts 3, the large gear 2 is installed in the gear shaft of the motor 11, and the key 19 is installed; the trapezoidal thread shaft 12 is fitted into the riser 7 and into the gear 1 and the key 18. The trapezoidal thread shaft 12 is kept horizontal, so that preparation is made for subsequent installation of the vertical plate; the trapezoidal thread shaft 12 is pre-installed in the vertical plate 6, penetrates through the bottom plate mounting hole and is fastened by the nut 14; the vertical plate 6 is connected with the bottom plate 8 by bolts 7 through holes 62, and the cable 4 is connected by bolts through the displacement sensor control box and the display screen 5 and mounted on threaded holes 63 of the vertical plate 6.
The application method of the device for detecting the pipeline flow of the dry oil centralized lubrication system comprises the following steps: when the novel pipeline is used, a hose of an original pipeline is disconnected, one end of the hose is connected with the motor oil inlet 15, and the other end of the hose is connected with the motor oil outlet 16. After the lubrication pump is started, high-pressure lubricating grease flows through the motor 11, the belt drives the motor 11 to rotate, and the rotation of the gear 2 is further transmitted to the gear 1. The rotation of the gear 1 is transmitted to the trapezoidal thread shaft 12, and the trapezoidal thread shaft 12 rotates to drive the milling table indication magnetic ring sleeve 13 to linearly move in the milling groove displacement sensor 10. The linear movement of the milling groove displacement sensor 10 can be displayed on scales, and data can be acquired, displayed and transmitted through the displacement sensor.
Compared with the prior art, the invention has the advantages that 1) the device for measuring the flow in the field of high-viscosity lubricating grease is relatively less, the invention has simple structure and strong pollution resistance, and the accuracy is high compared with similar products by mutually checking scale display and digital display; 2) The scheme has the advantages of high precision, good repeatability, simple structure, high pressure resistance, wide measurement range, small volume, light weight, small pressure loss, long service life, simple operation, convenient maintenance and the like; 3) The scheme can realize the on-line observation of specific data of pipeline flow, and particularly plays a key role in forecasting leakage of each group of branch main pipelines of the double-line terminal type dry oil centralized lubrication system, so that the actual state of pipeline leakage can be detected in advance when the lubrication system is still in micro leakage according to the flow difference value, and an accurate numerical basis is provided for planned maintenance arrangement.
Drawings
Fig. 1: a front view of the flow detection device;
Fig. 2: a left view of the flow detection device;
fig. 3: a view of the flow detection device A-A;
Fig. 4: a top view of the flow detection device;
Fig. 5: a trapezoidal thread axis schematic diagram;
fig. 6: a milling table indication magnetic ring sleeve structure schematic diagram;
Fig. 7: schematic diagram of milling groove displacement sensor structure;
Fig. 8: l plate structure schematic diagram.
The specific embodiment is as follows:
In order to enhance the understanding of the present invention, the present embodiment will be described in detail with reference to the accompanying drawings.
Example 1: referring to fig. 1, a device for detecting the flow rate of a pipeline of a dry oil centralized lubrication system comprises a frame assembly, a motor transmission assembly, a flow scale display assembly and a flow digital display assembly, wherein the frame assembly comprises a bottom plate 8, an L plate 6 and 2 fixed L plate bolts 7, wherein a vertical plate is machined on the bottom plate, and the frame assembly is used for providing support and installation positions for the motor assembly and the like; the motor transmission assembly consists of a motor 11, 4 bolts 3 for installing the motor, a pinion 1 and a large gear 2, and is used for converting the rotary motion generated by the motor driven by high-pressure lubricating grease into measurable linear motion; the flow scale display assembly comprises a milling table indication magnetic ring sleeve 13 and a graduated scale 9, and is used for directly reading flow on scales; the flow digital display assembly comprises a trapezoid threaded shaft 12, a milling groove displacement sensor 10, a cable 4 and a display device 5, and the function of the flow digital display assembly is to digitally display data measured by the displacement sensor in the display device and further transmit the data to other control units. As shown in fig. 5, the trapezoidal thread shaft 12 is used to convert the rotational motion of the motor shaft into a linear motion through the rotational motion of the gear 1. The left end of the trapezoidal thread shaft 12 is provided with an assembly shaft diameter 21 which is in clearance fit with a mounting hole 61 of the L plate 7, the right end of the trapezoidal thread shaft 12 is provided with an assembly shaft diameter 23 which is in clearance fit with a hole corresponding to the bottom plate, the rightmost end of the trapezoidal thread shaft 12 is provided with a shaft diameter matched with the gear 1, and a key groove 24 is processed on the shaft diameter and is used for transmitting the rotation of the gear 1 to the trapezoidal thread shaft 12. The threads 22 in the acme shaft 12 may be formed into threads of different profiles depending on the different requirements and processing conditions. Referring to fig. 6, the milling indication magnetic ring sleeve 13 is a key for converting the rotation motion of the trapezoidal thread shaft 12 into the linear motion, an inner hole 30 is machined in the center of the milling indication magnetic ring sleeve 13, the diameter of the inner hole is the same as the diameter of the shaft matched with the milling slot displacement sensor, and a key slot 33 is machined in the inner hole to avoid the rotation of the milling indication magnetic ring sleeve. The milling table indication magnetic ring sleeve 13 is not only a graduated indication needle, but also a magnetic ring. The step 31 is milled on the milling machine to form an indicating needle 32, when the trapezoidal thread shaft 12 rotates, the part of the milling machine indicating magnetic ring sleeve 13 meshed with the trapezoidal thread shaft is 36, and the milling machine indicating magnetic ring sleeve 13 is driven to move outside the graduated scale 9, and the actually generated flow is read according to the graduated scale; another function of the milling table indication magnetic ring sleeve 13 is that the magnetic ring 35 and the magnetic rod 48 relatively move, so that the position change of the displacement sensor is realized. The milling table indicates that the magnetic ring sleeve 13 is axially provided with a groove, a magnetic ring 35 is arranged in the groove, and the groove is blocked by a plastic ring 34 to form the magnetic ring sleeve. The milling groove displacement sensor 10 is a device for accurately measuring, displaying and transmitting data of the distance of the linear movement of the milling table indicating magnetic ring sleeve 13. The anti-thrust flange comprises a hollow screw rod 52, a flange screw sleeve 42, a magnetic rod 48, a coil 45 and an insulating sealing ring 45, wherein a thrust flange 41 is processed on the left side of the flange screw sleeve 42, a mounting bolt hole 44 is formed in the thrust flange, an internal thread 46 is processed on the right end of the thrust flange, a thread 43 is arranged on the rightmost end of the hollow screw rod 52 and used for fixing the milling groove displacement sensor 10 on a bottom plate and fixed by a nut 14, and a thread 47 is processed on the leftmost end of the thrust flange and used for being matched and connected with the internal thread 46 of the flange screw sleeve 42; the upper end of the middle working position of the hollow screw 52 is provided with a key slot 50 which is matched with the key slot 33 of the milling station indication magnetic ring sleeve, and a deep hole 51 is processed in the center for installing the magnetic rod 48. The scheme can be applied to the detection of the pipeline flow of the grease lubrication system, plays a key role in forecasting the leakage of each group of branch main pipelines of the double-line terminal type dry oil centralized lubrication system, and therefore the actual state of pipeline leakage can be detected in advance when the lubrication system is judged to be in micro leakage according to the flow difference. For the pipeline system with alarm faults, the flow monitoring device can be connected to each group of branch main pipelines, the lubrication pump station is started and set to a continuous state, and the leakage states of the branch main pipelines of different groups are judged according to the flow monitoring results, so that fault treatment is carried out by some discharging vectors.
Working principle: referring to fig. 1, rotation of the gear 1 is transmitted through rotation of the gear 2 engaged with the gear 1.
The installation mode for field use is as follows:
as shown in fig. 1-4, a motor 11 is installed in the base plate 8 and is fixed to the base plate by bolts 3.
As shown in fig. 2, the large gear 2 is fitted into the gear shaft of the motor 11, and the key 19 is installed.
As shown in fig. 1, a trapezoidal thread shaft 12 is installed in a vertical plate 7, and a gear 1 and a key 18 are installed. The trapezoidal threaded shaft 12 is kept horizontal in preparation for subsequent loading into the riser.
As shown in fig. 1, a trapezoidal threaded shaft 12 is preloaded into the riser 6, passed through the floor mounting hole, and tightened with a nut 14.
The vertical plate 6 is connected with the bottom plate 8 by bolts 7 through holes 62, and the cable 4 is connected by bolts through the displacement sensor control box and the display screen 5 and mounted on threaded holes 63 of the vertical plate 6.
In use, as shown in fig. 4, the hose of the original pipeline is disconnected, one end of the hose is connected to the motor oil inlet 15, and the other end of the hose is connected to the motor oil outlet 16. After the lubrication pump is started, high-pressure lubricating grease flows through the motor 11, the belt drives the motor 11 to rotate, and the rotation of the gear 2 is further transmitted to the gear 1. The rotation of the gear 1 is transmitted to the trapezoidal thread shaft 12, and the trapezoidal thread shaft 12 rotates to drive the milling table indication magnetic ring sleeve 13 to linearly move in the milling groove displacement sensor 10. The linear movement of the milling groove displacement sensor 10 can be displayed on scales, and data can be acquired, displayed and transmitted through the displacement sensor.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and equivalent changes or substitutions made on the basis of the above-mentioned technical solutions fall within the scope of the present invention as defined in the claims.
Claims (3)
1. The device for detecting the pipeline flow of the dry oil centralized lubrication system is characterized by comprising a frame assembly, a motor transmission assembly, a flow scale display assembly and a flow digital display assembly, wherein the frame assembly comprises a bottom plate, an L plate and 2 fixed L plate bolts, and the frame assembly is used for providing support and installation positions for the motor transmission assembly; the motor transmission assembly consists of a motor, 4 bolts for installing the motor, a pinion and a large gear, and is used for converting the rotary motion generated by the motor driven by high-pressure lubricating grease into measured linear motion; the flow scale display assembly comprises a milling table indication magnetic ring sleeve and a graduated scale, and is used for directly reading flow on the graduated scale; the flow digital display assembly comprises a trapezoidal thread shaft, a milling groove displacement sensor, a cable and a display device, wherein the left end of the trapezoidal thread shaft is provided with an assembly shaft diameter which is in clearance fit with a mounting hole of an L plate, the right end of the trapezoidal thread shaft is provided with an assembly shaft diameter which is in clearance fit with a hole corresponding to a bottom plate, the rightmost end of the trapezoidal thread shaft is provided with a shaft diameter matched with a pinion, a key groove is formed in the right end of the trapezoidal thread shaft and is used for transmitting rotation of the gear to the trapezoidal thread shaft, an inner hole is formed in the center of a milling table indication magnetic ring sleeve, the diameter of the milling groove displacement sensor is the same as the outer diameter of the shaft diameter matched with the milling groove displacement sensor, a key groove is formed in the inner hole, the milling table indication magnetic ring sleeve is milled with a step, an indication needle is formed, when the trapezoidal thread shaft rotates, the milling table indication magnetic ring sleeve meshed with the milling table indication magnetic ring sleeve is driven to move outside a scale, a flow which actually occurs is read out, a groove is formed in the milling table indication sleeve in the axial direction according to the scale, the milling table indication sleeve is plugged with a plastic ring, the magnetic ring is formed in the milling groove displacement sensor, the milling groove displacement sensor consists of a hollow screw, a coil and a sealing ring is connected with the right end of the milling groove displacement sensor, a screw sleeve, a screw nut is used for fixing the screw, and a screw nut is arranged at the right end of the milling groove displacement sensor, and is used for fixing a screw nut, and is connected with the screw end; the upper end of the middle working position of the hollow screw is provided with a key slot which is matched with the key slot of the milling table indication magnetic ring sleeve, and a deep hole is processed in the center and is used for installing a magnetic rod.
2. The method for installing the device for detecting the pipeline flow of the dry oil centralized lubrication system according to claim 1, wherein the method is as follows:
Loading the motor into the bottom plate, fixing the motor on the bottom plate by using bolts, loading the large gear into a gear shaft of the motor, and installing a key; installing a trapezoidal thread shaft into the vertical plate, installing a large gear and a key, and keeping the trapezoidal thread shaft horizontal; preassembling a trapezoid threaded shaft in a vertical plate, penetrating through a bottom plate mounting hole, and fastening by using a nut; the vertical plate is connected with the bottom plate through the bolt penetrating hole, the displacement sensor control box and the display device are penetrated through the bolt, and the displacement sensor control box and the display device are installed on the threaded hole of the vertical plate to be connected with the cable.
3. The method for using the device for detecting the pipeline flow of the dry oil centralized lubrication system according to claim 1, wherein the method is as follows: when the milling machine is used, a hose of an original pipeline is disconnected, one end of the hose is connected with an oil inlet of the motor, the other end of the hose is connected with an oil outlet of the motor, high-pressure lubricating grease flows through the motor after the lubricating pump is started, the motor is driven to rotate, the rotation of a large gear is further transmitted to a small gear, the rotation of the small gear is transmitted to a trapezoidal thread shaft, and the trapezoidal thread shaft rotates to drive a milling table indication magnetic ring to be sleeved on a milling groove displacement sensor to linearly move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245291.XA CN112923983B (en) | 2019-12-06 | 2019-12-06 | Device for detecting pipeline flow of dry oil centralized lubrication system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245291.XA CN112923983B (en) | 2019-12-06 | 2019-12-06 | Device for detecting pipeline flow of dry oil centralized lubrication system |
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| Publication Number | Publication Date |
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| CN112923983A CN112923983A (en) | 2021-06-08 |
| CN112923983B true CN112923983B (en) | 2024-05-03 |
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|---|---|---|---|---|
| FR1400301A (en) * | 1964-07-08 | 1965-05-21 | Thomson Houston Comp Francaise | Improvements to flow indicator devices |
| FR1515220A (en) * | 1967-01-19 | 1968-03-01 | Tech Integrale | Device for controlling the pitch of a screw or a rack of a system transforming a rotational movement into a translational movement |
| CN202648708U (en) * | 2012-06-20 | 2013-01-02 | 昆山沃力达机械有限公司 | Flow and position indicator |
| CN103512622A (en) * | 2012-06-20 | 2014-01-15 | 昆山沃力达机械有限公司 | Flow and position indicator |
| CN105737907A (en) * | 2014-12-30 | 2016-07-06 | 林肯工业公司 | Flow measuring device for lubrication system |
| CN105765350A (en) * | 2013-09-30 | 2016-07-13 | 林肯工业公司 | Flow measuring device for lubrication systems |
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| CN107255438A (en) * | 2017-04-25 | 2017-10-17 | 中国计量大学 | A kind of micro- angle change measurement apparatus of simple ultrasonic water meter reflector plate |
| CN108426614A (en) * | 2018-01-24 | 2018-08-21 | 上海市政工程设计研究总院（集团）有限公司 | A kind of visual air flow indicator and its method for measuring deodorization air hose air quantity |
| CN110285860A (en) * | 2019-07-10 | 2019-09-27 | 湖南省计量检测研究院 | A kind of piston-type flow-meter and its measurement method |
-
2019
- 2019-12-06 CN CN201911245291.XA patent/CN112923983B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1400301A (en) * | 1964-07-08 | 1965-05-21 | Thomson Houston Comp Francaise | Improvements to flow indicator devices |
| FR1515220A (en) * | 1967-01-19 | 1968-03-01 | Tech Integrale | Device for controlling the pitch of a screw or a rack of a system transforming a rotational movement into a translational movement |
| CN202648708U (en) * | 2012-06-20 | 2013-01-02 | 昆山沃力达机械有限公司 | Flow and position indicator |
| CN103512622A (en) * | 2012-06-20 | 2014-01-15 | 昆山沃力达机械有限公司 | Flow and position indicator |
| CN105765350A (en) * | 2013-09-30 | 2016-07-13 | 林肯工业公司 | Flow measuring device for lubrication systems |
| CN105737907A (en) * | 2014-12-30 | 2016-07-06 | 林肯工业公司 | Flow measuring device for lubrication system |
| CN106813726A (en) * | 2015-11-27 | 2017-06-09 | 常州市晨通电信设备厂(普通合伙) | A kind of pointer spinner flowmeter |
| CN107255438A (en) * | 2017-04-25 | 2017-10-17 | 中国计量大学 | A kind of micro- angle change measurement apparatus of simple ultrasonic water meter reflector plate |
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| CN112923983A (en) | 2021-06-08 |
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Effective date of registration: 20210805 Address after: 3520 Tongji Road, Baoshan District, Shanghai 201900 Applicant after: Baowu equipment Intelligent Technology Co.,Ltd. Address before: 210039 new building, Zhonghua Gate, Yuhuatai District, Jiangsu, Nanjing Applicant before: Nanjing Baodi Meishan Industrial City Development Co.,Ltd. Applicant before: Shanghai Meishan Iron & steel Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |