CN215639694U - Liquid level meter performance detection equipment - Google Patents
Liquid level meter performance detection equipment Download PDFInfo
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- CN215639694U CN215639694U CN202122203098.9U CN202122203098U CN215639694U CN 215639694 U CN215639694 U CN 215639694U CN 202122203098 U CN202122203098 U CN 202122203098U CN 215639694 U CN215639694 U CN 215639694U
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- liquid level
- supporting plate
- water tank
- screw rod
- range finder
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Abstract
The utility model relates to a liquid level meter performance detection device, which comprises a water tank, a supporting plate and a lifting device, wherein the lifting device is used for driving the supporting plate to vertically displace; the lifting device comprises a top plate and a screw rod, and the top plate is fixed at the upper end of the box body; the upper end of the top plate is connected with a motor, a rotating shaft of the motor is connected with a screw rod, and one end of the supporting plate is connected with the screw rod to form a ball screw pair; the motor and the laser range finder are connected to a control center. In the whole process of detecting the liquid level meter, the liquid level of the water tank is positioned at a fixed position, and the distance between the liquid level meter and the liquid level is changed by the support plate, so that frequent water discharging and water injecting operations in the conventional detection process are avoided, and water resources are saved.
Description
Technical Field
The utility model relates to the field of standard verification equipment of a liquid level meter, in particular to performance detection equipment of the liquid level meter.
Background
The liquid level meter is a commonly used measuring instrument device in industrial production, is used for monitoring the liquid level height of liquid in real time, has been widely applied to industrial fields such as petroleum, energy, water conservancy and the like, and along with the development of science and technology, provides higher requirement to the precision of liquid level meter.
The liquid level meter needs standard verification before being put into production, and data errors of the liquid level meter at a plurality of detection points are tested. The detection process in the prior art is as follows: connecting the measuring water tank with a water source, fixing the position of the liquid level meter, changing the water level through a water pump, and recording the measuring data of the liquid level meter at each measuring point; the outer side of the water tank is communicated with a glass tube, so that the glass tube is level with the water level of the water tank; the glass tube is provided with scale marks, the liquid level scales are read manually, the manual reading is used as standard data for detecting the liquid level meter, and the standard data and the measured data are compared to finish the detection of the liquid level meter.
In the whole measuring process, the liquid level of the water tank needs to reach a plurality of detection points frequently, so that water needs to be filled into or drained from the water tank repeatedly, more time is spent, larger water is needed, and meanwhile, standard data are obtained through manual reading on a glass tube, so that the detection result is large in floating, and the calibration result of the liquid level meter is influenced.
In view of the above-mentioned prior art, there is a need for an improvement of the standard calibration device of the prior art liquid level meter.
SUMMERY OF THE UTILITY MODEL
In order to achieve the purpose of the utility model, the utility model provides a liquid level meter performance detection device, which comprises a water tank, a support plate and a lifting device, wherein a U-shaped channel for accommodating the lifting device is arranged at the side part of the upper end of the water tank, a laser range finder for marking the standard height of a liquid level and a connecting flange for installing a liquid level meter to be detected are arranged at the upper end of the support plate, and the lifting device is used for driving the support plate to vertically displace;
the lifting device comprises a top plate and a screw rod, the top plate is fixed at the upper end of the water tank, the upper end of the top plate is connected with a motor, one end of the screw rod is connected with an output shaft of the motor, and the other end of the screw rod is connected with the bottom of the U-shaped channel through a bearing seat;
a buoy used for marking the position of the liquid level is arranged below the laser range finder, and a reflecting sheet used for reflecting laser emitted by the laser range finder is arranged in the center of the buoy;
one end of the supporting plate is connected with the screw rod to form a ball screw pair;
the motor and the laser range finder are electrically connected to an external control center.
Furthermore, slide rails are arranged on two sides of the U-shaped channel, and slide blocks matched with the slide rails are arranged on two sides of the supporting plate.
Furthermore, the support plate further comprises an upright post, one end of the upright post is connected with the top plate, the other end of the upright post is connected with the bottom of the U-shaped channel, and the rear end of the support plate is connected with the upright post in a sliding mode.
Furthermore, the support plate comprises a connecting part and a bearing part, the screw rod penetrates through the connecting part, and the connecting flange and the laser range finder are arranged on the upper surface of the bearing part;
the side of connecting portion is provided with waist type hole, the lateral wall of bearing portion is provided with the screw hole, waist type hole with the screw hole corresponds each other.
Further, a camera is arranged above the connecting flange and electrically connected to the control center.
Further, still be provided with the glass pipe on the lateral wall of water tank, the lower extreme and the water tank of glass pipe are linked together, and slide caliper is installed to the side of glass pipe.
Further, the vernier caliper is a digital display vernier caliper.
The utility model provides a liquid level meter performance detection device which is used for carrying out standard verification on a liquid level meter, in particular to a non-contact liquid level meter such as an ultrasonic liquid level meter. According to the utility model, the liquid level meter to be detected and the laser range finder for standard verification are arranged on the support plate, and the support plate is arranged on the side part of the water tank through the screw rod lifting device, so that the liquid level meter and the laser range finder can move in the vertical direction and reach all verification lengths.
In the whole process of detecting the liquid level meter, the liquid level of the water tank is located at a fixed position, and the distance between the liquid level meter and the liquid level is changed by the support plate, so that frequent water discharging and water injecting operations in the conventional detection process are avoided, and water resources are saved; the backup pad relies on lead screw elevation structure displacement, and the motor at top can be automatic the distance of controlling the backup pad lift accurately. The utility model has simple structure, and can finish the standard verification of the liquid level meter only by injecting less water.
Drawings
FIG. 1 is a front view of a level gauge performance detection apparatus of the present invention;
FIG. 2 is a right side view of a fluid level gauge performance detection apparatus of the present invention;
fig. 3 is a schematic view of the installation of the lifting device and the supporting plate in the embodiment.
Reference numerals: 1. a water tank; 2. a support plate; 3. a lifting device; 4. a laser range finder; 5, a U-shaped channel; 6. a connecting flange; 7. a float; 8. a reflective sheet; 9. a chute; 10. a top plate; 11. a motor; 12. a screw rod; 13. a pillar; 14. a slider; 15 a connecting part; 16. a bearing part; 17. a kidney-shaped hole; 18. a camera; 19. a glass tube; 20. a vernier caliper.
Detailed Description
The utility model is further described below with reference to the following figures and specific examples.
The liquid level meter performance detection equipment shown in fig. 1 and 3 comprises a water tank 1, a support plate 2 and a lifting device 3, wherein a U-shaped channel 5 used for containing the lifting device 3 is arranged on the side part of the upper end of the water tank 1, a laser range finder 4 used for measuring the standard height of a liquid level and a connecting flange 6 used for installing a liquid level meter to be measured are arranged on the upper end of the support plate 2, and the lifting device 3 is used for driving the support plate 2 to vertically displace.
The lifting device 3 comprises a top plate 10 and a screw rod 12, the top plate 10 is fixed at the upper end of the water tank 1, the upper end of the top plate 10 is connected with a motor 11, one end of the screw rod 12 is connected with a rotating shaft of the motor 11, and the other end of the screw rod 12 is connected with the bottom of the U-shaped channel 5 through a bearing seat.
The buoy 7 is arranged below the laser range finder 4, the buoy 7 is used for marking the position of the liquid level, the reflecting sheet 8 is arranged at the center of the buoy 7, the reflecting sheet 8 is used for reflecting light rays emitted by a probe of the laser range finder 4, and the light rays are reflected by the reflecting sheet 8 and then received by the laser range finder 4, so that the standard distance from the laser range finder 4 to the liquid level is obtained.
One end of the supporting plate 2 and the screw rod 12 form a ball screw pair, and the supporting plate 2 drives the liquid level meter to be detected and the laser range finder 4 to vertically displace along the screw rod 12 under the driving of the motor 11, so that the accuracy of a measuring result is ensured.
The motor 11 and the laser range finder 4 are connected to an external control center, the control center receives length information fed back by the laser range finder 4 and sends a driving instruction to the motor 11, and therefore data detection of each detection point of the liquid level meter is achieved.
In this embodiment, two sides of the U-shaped channel 5 are provided with slide rails, two sides of the supporting plate 2 are provided with slide blocks 14 corresponding to the slide rails, and the slide blocks 14 are matched with the slide rails, so that the displacement stroke of the supporting plate 2 is more accurate. Further, the support device also comprises a stand column, one end of the stand column is connected with the top plate 10, the other end of the stand column is connected with the bottom of the U-shaped channel 5, and the rear end of the support plate 2 is connected with the stand column in a sliding mode. The vertical columns serve to assist in defining the position of the support plate 2 so that the support plate 2 remains horizontal during vertical movement.
As shown in fig. 2, the support plate 2 includes a connecting portion 15 and a bearing portion 16, the screw rod is inserted into the connecting portion 15, and the connecting flange 6 and the laser range finder 4 are disposed on the upper surface of the bearing portion 16; the side of the connecting part 15 is provided with a waist-shaped hole 17, the side wall of the bearing part 16 is provided with a threaded hole, and the waist-shaped hole 17 and the threaded hole correspond to each other. The bearing part 16 bears the measuring component, the connecting part 15 is connected with the lifting component, and the bearing part 16 and the connecting part 15 can be fastened into a lifting whole through the waist-shaped hole 17 and the threaded hole by using bolts and nuts; and the setting of waist type hole 17 makes the staff can finely tune the relative position between bearing part 16 and connecting portion 15, prevents that the distance between the liquid level is too big or the undersize in backup pad 2 and the water tank 1 from, causes the unable verification distance of level gauge or the liquid level to be located within the blind area of level gauge.
The side wall of the water tank 1 is also provided with a glass tube 19, the lower end of the glass tube 19 is communicated with the water tank 1, a vernier caliper 20 is installed on the side surface of the glass tube 19, and the vernier caliper 20 is preferably a digital display vernier caliper 20 so as to facilitate reading. Due to the principle of the communicating vessel, the liquid level of the glass tube 19 and the liquid level of the water tank 1 are kept level, and the position of the liquid level can be visually observed; comparing the data obtained by the vernier caliper 20 with the data obtained by the laser range finder 4, and finding abnormal data in the verification process in time; meanwhile, when the laser range finder cannot be used, the glass tube 19 and the vernier caliper 20 can serve as standard equipment for verification.
Further, a camera 18 is arranged above the connecting flange 6, and the camera 18 is connected to a control center and used for observing the gauge head number of the liquid level meter to be calibrated.
The working process of the embodiment is as follows, the support plate 2 is adjusted according to the data displayed by the laser range finder 4 until the support plate 2 reaches the required position, and the data of the liquid level meter to be verified and the laser range finder 4 are classified as zero points in the system. Selecting the length required by verification, setting the height of the support plate 2 to be lifted when the support plate reaches a verification point in the system, and starting the motor 11; the motor 11 drives the screw rod 12 to enable the liquid level meter to reach each detection point, and after the liquid level meter and the laser range finder 4 move stably, the indication and the indication change of the liquid level meter and the laser range finder 4 at each detection point are observed and recorded. Similarly, except for the indicating standard error, the supporting plate 2 is used for measuring in a reciprocating mode at a plurality of verification points and is compared with the position of the laser range finder 4 to obtain the stroke indicating value error of the liquid level meter under the target length.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the utility model is not limited to the embodiments disclosed, but is capable of various modifications and substitutions without departing from the spirit of the utility model.
Claims (7)
1. The utility model provides a level gauge performance check out test set which characterized in that: the device comprises a water tank, a supporting plate and a lifting device, wherein a U-shaped channel for accommodating the lifting device is arranged on the side part of the upper end of the water tank, a laser range finder for marking the standard height of the liquid level and a connecting flange for installing a liquid level meter to be measured are arranged on the upper end of the supporting plate, and the lifting device is used for driving the supporting plate to vertically displace;
the lifting device comprises a top plate and a screw rod, the top plate is fixed at the upper end of the water tank, the upper end of the top plate is connected with a motor, one end of the screw rod is connected with an output shaft of the motor, and the other end of the screw rod is connected with the bottom of the U-shaped channel through a bearing seat;
a buoy used for marking the position of the liquid level is arranged below the laser range finder, and a reflecting sheet used for reflecting laser emitted by the laser range finder is arranged in the center of the buoy;
one end of the supporting plate is connected with the screw rod to form a ball screw pair;
the motor and the laser range finder are electrically connected to an external control center.
2. A gauge performance detection apparatus as claimed in claim 1, wherein: the two sides of the U-shaped channel are provided with slide rails, and the two sides of the supporting plate are provided with slide blocks matched with the slide rails.
3. A gauge performance detection apparatus as claimed in claim 2, wherein: the supporting plate is characterized by further comprising an upright column, one end of the upright column is connected with the top plate, the other end of the upright column is connected with the bottom of the U-shaped channel, and the rear end of the supporting plate is connected with the upright column in a sliding mode.
4. A gauge performance detection apparatus as claimed in claim 3, wherein: the support plate comprises a connecting part and a bearing part, the screw rod penetrates through the connecting part, and the connecting flange and the laser range finder are arranged on the upper surface of the bearing part;
the side of connecting portion is provided with waist type hole, the lateral wall of bearing portion is provided with the screw hole, waist type hole with the screw hole corresponds each other.
5. The apparatus for detecting the performance of a liquid level gauge as claimed in any one of claims 1 to 4, wherein: and a camera is arranged above the connecting flange and electrically connected to the control center.
6. The apparatus for detecting the performance of a liquid level gauge as set forth in claim 5, wherein: the side wall of the water tank is also provided with a glass tube, the lower end of the glass tube is communicated with the water tank, and a vernier caliper is installed on the side surface of the glass tube.
7. The apparatus for detecting the performance of a liquid level gauge as set forth in claim 6, wherein: the vernier caliper is a digital display vernier caliper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122203098.9U CN215639694U (en) | 2021-09-10 | 2021-09-10 | Liquid level meter performance detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122203098.9U CN215639694U (en) | 2021-09-10 | 2021-09-10 | Liquid level meter performance detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215639694U true CN215639694U (en) | 2022-01-25 |
Family
ID=79915190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122203098.9U Active CN215639694U (en) | 2021-09-10 | 2021-09-10 | Liquid level meter performance detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215639694U (en) |
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2021
- 2021-09-10 CN CN202122203098.9U patent/CN215639694U/en active Active
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