CN210720454U

CN210720454U - Special telescopic support for underground flow velocity measurement

Info

Publication number: CN210720454U
Application number: CN201921932160.4U
Authority: CN
Inventors: 吴小能
Original assignee: Nanjing Jijia Water Technology Co Ltd
Current assignee: Nanjing Jijia Water Technology Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-06-09
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a special telescopic bracket is measured to velocity of flow in pit, which comprises a housin, the inside of casing has gear motor through the fix with screw, gear motor's output shaft tip key-type connection has the gear, one side meshing transmission of gear is connected with the rack bar, both ends communicate respectively about the centre of casing have first exit channel and second exit channel, the upside of rack bar extends to the casing upside through first exit channel, the downside of rack bar extends to the downside of casing through second exit channel, the lower extreme tip integrated into one piece of rack bar has the fixed bolster, there is the installing support through the fix with screw on the fixed bolster, there is velocity of flow sensor through the fix with screw on the installing support. The depth of the flow velocity sensor is adjusted and monitored at will, sludge blockage is avoided, and the stability of flow velocity measurement is improved.

Description

Special telescopic support for underground flow velocity measurement

Technical Field

The utility model belongs to the technical field of velocity of flow measurement accessory in the pit, concretely relates to special telescopic bracket of velocity of flow measurement in the pit.

Background

To plumbing and sewage pipe network, flow monitoring is the most common demand, but owing to pile up silt easily for the drainage pipe network, very easily cause the velocity of flow sensor liquid level measurement hole to plug up, cause the liquid level measurement error, simultaneously, because rivers arouse the velocity of flow problem on the small side because frictional force in pipe wall and bottom in the pipe network, also caused the velocity of flow to measure and also produced great error, consequently current flow monitoring equipment has the unstable problem of data monitoring always. In view of the above, there is a need to design a telescopic bracket specially used for downhole flow rate measurement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special telescopic bracket of velocity of flow measurement in pit to propose current flow monitoring equipment in solving above-mentioned background art because the silt of socle stops up velocity of flow sensor, lead to having the unstable problem of data monitoring.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a special telescopic bracket of velocity of flow measurement in pit, includes the casing, the inside of casing has gear motor through the fix with screw, gear motor's output shaft tip key-type connection has the gear, one side meshing transmission of gear is connected with the rack bar, both ends communicate respectively about the centre of casing have first exit channel and second exit channel, the upside of rack bar extends to the casing upside through first exit channel, the downside of rack bar extends to the downside of casing through second exit channel, the lower extreme tip integrated into one piece of rack bar has the fixed bolster, there is the installing support through the fix with screw on the fixed bolster, there is velocity of flow sensor through the fix with screw on the installing support.

Preferably, gear motor is provided with two, two gear motor's the equal key-type connection of output shaft tip has the gear, two gear symmetric distribution is in the both sides of rack pole, and meshes the transmission with the both sides of rack pole respectively and is connected.

Preferably, the upper end of the speed reducing motor is electrically connected with a torque measurer, the torque measurer is fixed to the upper end of the speed reducing motor, the torque measurer and the flow velocity sensor are electrically connected with data lines, and the data lines are electrically connected with the flow velocity monitoring equipment on the well.

Preferably, the upper end and the lower end of the rack bar are integrally formed with limit plates, and the limit plates are located on the outer side of the shell.

Preferably, the fixing support is uniformly provided with mounting holes from top to bottom.

Preferably, the mounting bracket is of an L-shaped design.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a fixed bolster has flexible function, therefore in flow monitoring period, equipment can be periodically slow-speed from the pipe network bottom to the upper portion operation measurement, and equipment can monitor continuous liquid level and velocity of flow value in pipe network depth of water within range simultaneously in 1 cycle, realizes the accurate calculation to pipe network periodic flow through the pipe network slicing algorithm, very big reduction the error that single-point velocity of flow measurement brought;

2. because the liquid level measurement error is mainly caused by the problems of pressure film fatigue and sludge blockage of the flow velocity sensor, the pressure film fatigue of the flow velocity sensor can be realized by placing and calibrating in the air, the sludge blockage of the flow velocity sensor is mainly caused by too low installation and long-term non-movement of the flow velocity sensor, in order to solve the problems, the moment measurer can monitor the moment state of the speed reducing motor in the downward detection process of the fixed support, if the flow velocity sensor is contacted with the bottom sludge layer, larger resistance can be generated, the speed reducing motor can identify the downward detection sludge position through output moment measurement, and simultaneously immediately stop continuously sending the flow velocity sensor, thereby effectively avoiding the sludge from being accumulated at the measuring probe of the flow velocity sensor for a long time, meanwhile, the fixed support can also carry out quick telescopic cleaning operation at a set time point, and effectively reducing, the maintenance period of the flow velocity sensor is greatly prolonged.

Drawings

FIG. 1 is an overall structure diagram of the present invention;

FIG. 2 is a view showing the internal structure of the housing of the present invention;

fig. 3 is a structural diagram of the fixing bracket and the mounting bracket of the present invention.

Reference numerals: 1. a housing; 2. a reduction motor; 3. a gear; 4. a rack bar; 5. a first outlet passage; 6. a second outlet channel; 7. fixing a bracket; 8. mounting a bracket; 9. a flow rate sensor; 10. a torque measurer; 11. a data line; 12. a limiting plate; 13. and (7) installing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a technical scheme: as shown in fig. 1 and 2, a special telescopic bracket for downhole flow velocity measurement comprises a housing 1, wherein a speed reducing motor 2 is fixed inside the housing 1 through screws, a gear 3 is connected to the end of an output shaft of the speed reducing motor 2 through a key, a rack bar 4 is connected to one side of the gear 3 through meshing transmission, the speed reducing motor 2 is provided with two speed reducing motors, the rotating directions of the output shafts are opposite, the gears 3 are connected to the end parts of the output shafts of the two speed reducing motors 2 through keys, the two gears 3 are symmetrically distributed on two sides of the rack bar 4 and are respectively connected with two sides of the rack bar 4 through meshing transmission, so that two sides of the rack bar 4 are stressed, and the rack bar 4 is guaranteed;

as shown in fig. 1 and 2, the upper end of the speed reducing motor 2 is electrically connected with a torque measurer 10, the torque measurer 10 is fixed at the upper end of the speed reducing motor 2, the torque measurer 10 and the flow rate sensor 9 are all electrically connected with a data line 11, the data line 11 is electrically connected with a downhole flow rate monitoring device, the torque measurer 10 can monitor the torque state of the speed reducing motor 2 in the downward detection process of the fixed support 7, if the flow rate sensor 9 is contacted with a bottom sludge layer, a large resistance can be generated, the speed reducing motor 2 identifies the downward detection sludge position through output torque measurement, and simultaneously stops immediately continuing to send the flow rate sensor 9, so that sludge is effectively prevented from being accumulated at a measuring probe of the flow rate sensor 9 for a long;

as shown in fig. 1 and 2, the upper end and the lower end of the middle of the housing 1 are respectively communicated with a first outlet channel 5 and a second outlet channel 6, the upper side of the rack bar 4 extends to the upper side of the housing through the first outlet channel 5, the lower side of the rack bar 4 extends to the lower side of the housing 1 through the second outlet channel 6, in order to prevent the rack bar 4 from sliding out of the housing 1, limiting plates 12 are integrally formed at the upper end and the lower end of the rack bar 4, and the limiting plates 12 are located at the outer side of the housing 1 and play a role in limiting and fixing;

as shown in fig. 1-3, the lower end of the rack bar 4 is integrally formed with a fixing support 7, the fixing support 7 is uniformly provided with a plurality of groups of mounting holes 13 from top to bottom, the fixing support 7 can be used for prolonging the length of the fixing support 7, and meanwhile, the mounting holes 13 with proper height can be conveniently selected for fixing the mounting support 8, the fixing support 7 is fixed with the mounting support 8 through screws, the mounting support 8 is fixed with the flow velocity sensor 9 through screws, the mounting support 8 is in an L-shaped design, so that the flow velocity sensor 9 can be conveniently mounted and fixed, the shell 1, the gear 3, the rack bar 4, the fixing support 7 and the mounting support 8 are made of stainless steel, the whole device is used in a wet environment without rusting, and the service life of the device is prolonged.

It should be noted that the specific model specifications of the reduction motor 2, the flow velocity sensor 9 and the torque measurer 10 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply of the reduction motor 2, the flow rate sensor 9 and the torque measuring device 10 and their principle will be clear to the skilled person and will not be described in detail here.

The working principle is as follows: when the depth of the flow velocity sensor 9 needs to be adjusted, the two speed reducing motors 2 are started, the two speed reducing motors 2 work simultaneously, the rotating directions are opposite, the two gears 3 are driven to rotate, the rack rods 4 move up and down under the driving of the two gears 3, the fixed support 7 is driven to move up and down, and the fixed support 7 drives the flow velocity sensor 9 to move up and down through the mounting support 8, so that the depth adjustment is realized;

because the liquid level measurement error is mainly caused by the problems of pressure film fatigue and sludge blockage of the flow velocity sensor 9, the pressure film fatigue of the flow velocity sensor 9 can be realized by placing and calibrating in the air, the sludge blockage of the flow velocity sensor 9 is mainly caused by too low installation and long-term non-movement of the flow velocity sensor 9, in order to solve the problems, the moment measurer 10 can monitor the moment state of the speed reducing motor 2 in the downward detection process of the fixed support 7, if the flow velocity sensor 9 is contacted with the bottom sludge layer, large resistance can be generated, the speed reducing motor 2 can identify the downward detection sludge position through the measurement of the output moment, and simultaneously immediately stop continuously sending the flow velocity sensor 9, thereby effectively preventing the sludge from being accumulated at the measuring probe of the flow velocity sensor 9 for a long time, meanwhile, the fixed support 7 can also carry out quick telescopic cleaning operation at the set time point, and effectively reducing the, the maintenance period of the flow rate sensor 9 is greatly prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a special telescopic bracket of velocity of flow measurement in pit, includes casing (1), its characterized in that: the utility model discloses a gear rack, including casing (1), gear motor (2), output shaft end key of gear motor (2) has gear (3), one side meshing transmission of gear (3) is connected with rack bar (4), both ends communicate respectively about the centre of casing (1) have first exit passage (5) and second exit passage (6), the upside of rack bar (4) extends to the casing upside through first exit passage (5), the downside of rack bar (4) extends to the downside of casing (1) through second exit passage (6), the lower extreme tip integrated into one piece of rack bar (4) has fixed bolster (7), be fixed with installing support (8) through the screw on fixed bolster (7), be fixed with velocity of flow sensor (9) through the screw on installing support (8).

2. The telescopic bracket special for downhole flow velocity measurement according to claim 1, characterized in that: gear motor (2) are provided with two, two the equal key-type connection of output shaft tip of gear motor (2) has gear (3), two gear (3) symmetric distribution is in the both sides of rack bar (4), and meshes the transmission with the both sides of rack bar (4) respectively and is connected.

3. The telescopic bracket special for downhole flow velocity measurement according to claim 1, characterized in that: the upper end electric connection of gear motor (2) has moment caliber (10), moment caliber (10) is fixed in the upper end of gear motor (2), moment caliber (10) and velocity of flow sensor (9) equal electric connection have data line (11), data line (11) and aboveground velocity of flow monitoring facilities electric connection.

4. The telescopic bracket special for downhole flow velocity measurement according to claim 1, characterized in that: the rack rod is characterized in that limiting plates (12) are integrally formed at the end parts of the upper end and the lower end of the rack rod (4), and the limiting plates (12) are located on the outer side of the shell (1).

5. The telescopic bracket special for downhole flow velocity measurement according to claim 1, characterized in that: the fixing support (7) is uniformly provided with mounting holes (13) from top to bottom.

6. The telescopic bracket special for downhole flow velocity measurement according to claim 1, characterized in that: the mounting bracket (8) is designed in an L shape.