CN212513235U - Constant-elevation first-class metal measuring device standard device and liquid level control mechanism thereof - Google Patents
Constant-elevation first-class metal measuring device standard device and liquid level control mechanism thereof Download PDFInfo
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- CN212513235U CN212513235U CN202021055212.7U CN202021055212U CN212513235U CN 212513235 U CN212513235 U CN 212513235U CN 202021055212 U CN202021055212 U CN 202021055212U CN 212513235 U CN212513235 U CN 212513235U
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Abstract
The utility model discloses a constant elevation equal-grade metal measuring device standard device and a liquid level control mechanism thereof, when a first liquid level sensor detects the liquid level, the water replenishing into the equal-grade metal measuring device is stopped, a control device controls a first water pump to act, the water in the equal-grade metal measuring device is pumped out, and because one end of a stainless steel pipe is fixed at the central horizontal position of the liquid level corresponding to the nominal volume value, after the first water pump pumps water, the liquid level in the equal-grade metal measuring device is kept at the liquid level corresponding to the nominal volume value; the liquid level control mechanism can accurately control the liquid level in the first-class metal measuring device to be at the liquid level height corresponding to the nominal volume value without manual control and reading, so that the working efficiency is improved, and the accuracy and the repeatability are improved.
Description
Technical Field
The utility model belongs to the technical field of standard metal measuring vessel, especially, relate to an equal-grade metal measuring vessel standard device of invariable elevation and liquid level control mechanism thereof.
Background
The standard metal measuring device is an important measuring instrument for transmitting the volume values of liquid and gas, and is widely used in the industries of petrochemical industry and the like. The method is characterized in that the first-class metal measuring device and the metal measuring device to be detected require that the environmental temperature range of a laboratory is (20 +/-5) DEG C according to the detection process of a capacity comparison method, the difference between the environmental temperature and the water temperature is not more than +/-5 ℃, the switch of a three-way valve is generally manually controlled to stop, and then a nominal liquid level value of the first-class metal measuring device is read by the superposition of a cursor reticle and the lowest end of a concave liquid level in a liquid level pipe. The whole measuring process is time-consuming and labor-consuming, the working efficiency is not high, and the measuring accuracy and the repeatability are greatly influenced by human factors.
In China, a plurality of scholars research the automatic modification of the standard metal measuring device, and the research and development of a capacity calibration device for three equal-metal measuring devices, which is proposed by Chen and Lin and the like, design an automatic water inlet and outlet system for the three equal-metal measuring devices; the research about the development of an automatic water inlet and outlet system of a standard metal measuring device, which is proposed by the saussurea involucrate, designs an automatic capacity verification system of an automobile oil tank with automatic water inlet and outlet; the design of a high-precision mobile oil-supply instrument calibrating device proposed by Lvgan et al designs a detection system for an online liquid (oil) body flowmeter; "development of a standard metal measuring device liquid level image recognition device" proposed by zhan haipeng et al; the standard metal measuring instrument liquid level monitoring system based on the area array CCD proposed by Liu Xiao Wei and the like proposes a method for realizing liquid level measurement based on the measurement technology of an image sensor; 'research on a standard metal measuring device with adjustable overflow liquid level' provided by Yi Hai and the like, and provides an adjustable and controllable control system for the overflow liquid level of a second-class standard metal measuring device. The above studies are limited to the standard metal measuring devices of the second class and below, and most of them only involve partial improvement of the standard metal measuring devices.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to the not enough of prior art, the utility model provides a first-class metal measuring ware standard device of invariable elevation and liquid level control mechanism thereof.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a liquid level control mechanism for a constant-level, equal-grade metal gauge standard, comprising: the device comprises a stainless steel pipe, a first liquid level sensor and a first water pump;
one end of the stainless steel pipe is inserted into a metering neck of the first-class metal measuring device and fixed at the central horizontal position of the liquid level corresponding to the nominal volume value, and the other end of the stainless steel pipe is connected with the first water pump; the first liquid level sensor is arranged in an overflow cover at the upper end of the metering neck; the first liquid level sensor and the first water pump are respectively connected with the control device.
The utility model discloses a liquid level control mechanism, when first level sensor detected the liquid level, stop to the moisturizing in the first class metal measuring vessel, controlling means control first water pump action, take out the water in the first class metal measuring vessel, because the one end of stainless steel pipe is fixed at the central horizontal position of the liquid level height that the nominal volume value corresponds, consequently, after first water pump draws water, make the liquid level in the first class metal measuring vessel keep at the liquid level height that the nominal volume value corresponds; the liquid level control mechanism can accurately control the liquid level in the first-class metal measuring device to be at the liquid level height corresponding to the nominal volume value, does not need manual liquid level control and reading, and improves the working efficiency, the accuracy and the repeatability.
Furthermore, a support plate is arranged on the overflow cover, a fastener is arranged on the support plate, the stainless steel pipe penetrates through the support plate and is inserted into a metering neck of a first-class metal measuring device, the stainless steel pipe is fixed on the support plate through the fastener, and one end of the stainless steel pipe is fixed at the central horizontal position of the liquid level corresponding to the nominal volume value.
Furthermore, a one-way valve is arranged in the stainless steel pipe to prevent a small amount of residual liquid from flowing into a first-class metal measuring device after the first water pump finishes pumping water so as to influence the liquid level accuracy.
Further, the first water pump is a micro-diaphragm pump.
The utility model also provides an equal-grade metal measuring vessel standard device of invariable elevation, include as above liquid level control mechanism.
Furthermore, the standard device also comprises a gauge body, an electric control three-way valve, a high-level water tank, a fan, a stepping motor and a support frame; the measuring device body is arranged on the supporting frame, a measuring neck is arranged at the upper end of the measuring device body, an overflow cover is arranged at the upper end of the measuring neck, and an electric control three-way valve is arranged at the lower end of the measuring device body; the electric control three-way valve is communicated with a water outlet of the high-level water tank through a first pipeline, and a first electromagnetic valve is arranged on the first pipeline; a first temperature sensor is arranged in the gauge body, a second temperature sensor is arranged in the high-level water tank, and a third temperature sensor and a fan are arranged in the environment where the standard device is located;
the electric control three-way valve is connected with the stepping motor through a shaft coupler, and the stepping motor, the first electromagnetic valve, the first temperature sensor, the second temperature sensor, the third temperature sensor and the fan are respectively connected with the control device.
The utility model discloses a standard device, when examining the examination of examining the measuring apparatus, automatically controlled three-way valve with examine the measuring apparatus intercommunication, the absolute value of the difference of this internal temperature of equivalent device and ambient temperature is less than or equal to 1 ℃, examine the absolute value of the difference of the temperature in the measuring apparatus and ambient temperature and be less than or equal to 1 ℃ and the absolute value of the difference of the temperature in the high temperature water tank and ambient temperature, control automatically controlled three-way valve and be in the feed liquor position, for the measuring apparatus body make-up water, when the water level reaches the position that first level sensor locates, control automatically controlled three-way valve and be in the stop position, first water pump action simultaneously, take unnecessary water out, make the water level stabilize at the liquid level height that nominal volume value corresponds, then control automatically controlled three-way valve and be in the tapping position, put this internal water of measuring apparatus to examining the measuring apparatus, examine and examine the measuring apparatus; the standard device can accurately control the nominal liquid level value (namely the liquid level height corresponding to the nominal volume value) in the measuring device body, and the verification accuracy of the measured device is guaranteed. The fan is used for acting when the difference between the water temperature and the environment temperature does not meet the requirement, so that the difference between the water temperature and the environment temperature meets the requirement.
Furthermore, the measuring apparatus body comprises an upper cone body, a cylinder body and a lower cone body which are sequentially communicated, the upper end of the upper cone body is provided with the measuring neck, and the lower end of the lower cone body is provided with the electric control three-way valve.
Furthermore, there are two third temperature sensors, two third temperature sensors are respectively arranged at positions 1.5m and 2.7m away from the ground, and the average value of the temperatures detected by the two third temperature sensors is taken as the ambient temperature, so that the accuracy of the ambient temperature is improved.
Furthermore, a second liquid level sensor is also arranged in the high-level water tank, a water inlet of the high-level water tank is communicated with a second water pump through a second pipeline, and a second electromagnetic valve is arranged on the second pipeline; and the second liquid level sensor, the second water pump and the second electromagnetic valve are respectively connected with the control device.
The water level in the high-level water tank is detected through the second liquid level sensor, and the second water pump and the second electromagnetic valve are controlled to act when the high-level water tank needs water supplement, so that water supplement is carried out on the high-level water tank.
Further, the standard device also comprises a liquid level pipe and a metering neck scale; the liquid level pipe is communicated with the measuring device body, and the liquid level pipe is adjacent to and parallel to the measuring neck; and a metering neck scale is arranged on the liquid level pipe.
During traditional calibration, whether the liquid level in the liquid level pipe is overlapped with the scale mark of the metering neck scale or not is observed through artificial naked eyes, and calibration can be carried out if the liquid level is overlapped; the utility model discloses a standard device still remains the position determination that the check that liquid level pipe and measurement neck scale can be convenient for when liquid level control, quantity value trace to the source and nonrust steel pipe.
Further, the standard device further comprises a human-computer interface touch screen, and the human-computer interface touch screen is in communication connection with the control device through the RS 422.
Advantageous effects
Compared with the prior art, the utility model provides a first grade metal measuring vessel standard device of invariable elevation and liquid level control mechanism thereof, when first level sensor detected the liquid level, stop to moisturizing in the first grade metal measuring vessel, controlling means controls first water pump action, take out the water in the first grade metal measuring vessel, because the one end of stainless steel pipe is fixed at the central horizontal position of the liquid level height that nominal volume value corresponds, consequently, after first water pump draws water, make the liquid level in the first grade metal measuring vessel keep at the liquid level height that nominal volume value corresponds; the liquid level control mechanism can accurately control the liquid level in the first-class metal measuring device to be at the liquid level height corresponding to the nominal volume value without manual control and reading, so that the working efficiency is improved, and the accuracy and the repeatability are improved; the standard device comprising the liquid level control mechanism is adopted for calibration, so that the calibration accuracy of the device to be measured is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a liquid level control mechanism according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a support plate in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a constant-level first-class metal measuring device according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of an electric control part in the embodiment of the present invention;
wherein, 1-stainless steel tube, 2-measuring neck, 3-overflow cover, 4-first liquid level sensor, 5-liquid level height line corresponding to nominal volume value, 6-first water pump, 7-support plate, 8-screw cap, 9-one-way valve, 10-liquid level tube, 11-measuring neck scale, 12-reading cursor on measuring neck scale, 13-sleeve, 14-upper cone, 15-cylinder, 16-lower cone, 17-electric control three-way valve, 18-high water tank, 19-support frame, 20-blower, 21-control device, 22-second liquid level sensor, 23-first pipeline, 24-first electromagnetic valve, 25-second pipeline, 26-second electromagnetic valve, 27-second temperature sensor, 28-first temperature sensor, 29-third temperature sensor.
Detailed Description
The technical solution 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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the utility model provides a liquid level control mechanism of a constant elevation equal-grade metal measuring device standard device, include: the device comprises a stainless steel pipe 1, a first liquid level sensor 4, a support plate 7 and a first water pump 6; a support plate 7 is arranged on the overflow cover 3 at the upper end of the metering neck, a fastener is arranged on the support plate 7, one end of the stainless steel pipe 1 penetrates through the support plate 7 to be inserted into the metering neck 2 of the first-class metal measuring device, the stainless steel pipe 1 is fixed on the support plate 7 through the fastener, one end of the stainless steel pipe 1 is stabilized at the central horizontal position of the liquid level height 5 corresponding to the nominal volume value, and the other end of the stainless steel pipe 1 is connected with a first water pump 6; the first liquid level sensor 4 is arranged in the overflow cover 3; the first liquid level sensor 4 and the first water pump 6 are respectively connected with the control device 21.
In this embodiment, the fastener includes the sleeve pipe 13 and two nuts 8 of in-band screw thread, is equipped with the through-hole in the central point of mounting panel 7 puts, and sleeve pipe 13 is fixed in the through-hole, is equipped with the external screw thread in stainless steel pipe 1's corresponding position, and two nuts 8 suit are on stainless steel pipe 1, and stainless steel pipe 1 passes sleeve pipe 13, and rethread two nuts 8 are fixed with stainless steel pipe 1, make the one end of stainless steel end fix the central horizontal position of the liquid level height 5 that nominal volume value corresponds. The length of the sleeve 13 is 150mm, and the difference between the inner diameter of the sleeve 13 and the outer diameter of the stainless steel pipe 1 is 0.5mm, so that the stainless steel pipe 1 can be rotated up and down to adjust the proper height. In this embodiment, the first water pump 6 is a micro isolation pump, the pumping flow rate of the micro isolation pump is about 2.5L/min, and the specific model can be a model sold on the market, such as a DP-60N micro electric diaphragm pump; the first level sensor 4 is a float-type level meter. A one-way valve 9 is arranged in the end part of the stainless steel pipe 1 close to the liquid level height 5 corresponding to the nominal volume value so as to prevent a small amount of residual liquid from flowing into a first-class metal measuring device to influence the liquid level accuracy after the first water pump 6 finishes pumping water
The utility model discloses a liquid level control mechanism, when first level sensor 4 detected the liquid level, stopped to the moisturizing in the first class metal volume ware, controlling means 21 control miniature isolator pump action, took out the water in the first class metal volume ware, because the one end of stainless steel pipe 1 is fixed at the central horizontal position of the liquid level height 5 that the nominal volume value corresponds, consequently, after miniature isolator pump took out water, made the liquid level in the first class metal volume ware keep at the liquid level height that the nominal volume value corresponds; the liquid level control mechanism can accurately control the liquid level in the first-class metal measuring device to be the liquid level height 5 corresponding to the nominal volume value, does not need manual liquid level control and reading, and improves the working efficiency, the accuracy and the repeatability. A check valve 9 is further arranged in the stainless steel pipe 1 to prevent a small amount of residual liquid from flowing into an equal-grade metal measuring device to influence the liquid level accuracy after the first water pump 6 finishes pumping water.
The utility model also provides an equal-grade metal measuring ware standard device of invariable elevation, including the liquid level control mechanism as above embodiment.
As shown in fig. 3 and 4, the standard device further comprises a measuring device body, an electric control three-way valve 17, a high-level water tank 18, a fan 20, a stepping motor and a support frame 19; the measuring device body is arranged on a support frame 19 and comprises an upper cone 14, a cylinder 15 and a lower cone 16 which are sequentially communicated, a measuring neck 2 is arranged at the upper end of the upper cone 14, an overflow cover 3 is arranged at the upper end of the measuring neck 2, and an electric control three-way valve 17 is arranged at the lower end of the lower cone 16 (the lower end of the lower cone 16 is connected with a first water outlet of the electric control three-way valve 17); a water inlet of the electric control three-way valve 17 is communicated with a water outlet of the high-level water tank 18 through a first pipeline 23, and a first electromagnetic valve 24 is arranged on the first pipeline 23; a first temperature sensor 28 is arranged in the measuring device body, a second temperature sensor 27 is arranged in the high-level water tank 18, and a third temperature sensor 29 and the fan 20 are arranged in the environment where the standard device is located; the electric control three-way valve 17 is connected with a stepping motor through a shaft coupler, and the stepping motor, the first electromagnetic valve 24, the first temperature sensor 28, the second temperature sensor 27, the third temperature sensor 29 and the fan 20 are respectively connected with the control device 21. The position control (liquid inlet position, stop position and liquid discharge position) is carried out on the electric control three-way valve 17 through the control device 21 and the stepping motor, the stepping driver adopts a control mode of 1000 subdivision and pulse adding direction, the control angle can be accurate to within 0.5 degrees, and the situation that the switch valve is not in place can be avoided.
In this embodiment, there are two third temperature sensors 29, the two third temperature sensors 29 are respectively disposed at positions 1.5m and 2.7m away from the ground, and an average value of the temperatures detected by the two third temperature sensors 29 is taken as the ambient temperature, so as to improve the accuracy of the ambient temperature. A second liquid level sensor 22 is also arranged in the high-level water tank 18, a water inlet of the high-level water tank 18 is communicated with a second water pump through a second pipeline 25, and a second electromagnetic valve 26 is arranged on the second pipeline 25; the second liquid level sensor 22, the second water pump, and the second electromagnetic valve 26 are connected to the control device 21.
The control device 21 can monitor and record the water temperature in the high-level water tank 18, the ambient temperature and the water temperature in the measuring device body in real time. The temperature control design aims at controlling the difference between the ambient temperature, the water temperature of the water tank, the water temperature in the measuring device body and the water temperature in the measured device within +/-1 ℃ in the measuring process. When the temperature is unbalanced, the control device 21 will automatically turn on the axial flow fan 20 to operate, and the standard device is also installed with an air conditioner in order to maintain the stability of the ambient temperature. In order to avoid overflow or water shortage of the high-level water tank 18 during water inlet and water discharge, a float type liquid level meter is arranged at the bottom of the water tank. If the water tank is at a low liquid level, the control device 21 automatically opens the second electromagnetic valve 26 to fill water until the set high liquid level of the water tank is reached. In the detection process, when the injected water is close to and rises to the nominal value measuring neck 2 of an equal-grade metal measuring device, the rising speed of the liquid level is very high, in order to avoid the overflow of the liquid level, a float liquid level meter is arranged in the overflow cover 3, the control device 21 is provided with an overflow water level value, and when the liquid level reaches the overflow water level, the control device 21 automatically places the electric control three-way valve 17 at the stop position.
The standard device also comprises a liquid level pipe 10 and a metering neck scale 11; the liquid level pipe 10 is communicated with the measuring device body, and the liquid level pipe 10 is adjacent to and parallel to the measuring neck 2; a measuring neck scale 11 is arranged on the liquid level pipe 10. During traditional calibration, whether the liquid level in the liquid level pipe 10 is overlapped with the scale mark of the metering neck scale 11 is observed through artificial naked eyes, and calibration can be carried out if the liquid level is overlapped; the utility model discloses a standard device still remains liquid level pipe 10 and measurement neck scale 11 and can be convenient for check, quantity value when liquid level control trace to the source and nonrust steel pipe 1's position is confirmed. The standard device also comprises a human-computer interface touch screen which is in communication connection with the control device 21 through the RS422, and the office system is in communication connection with the human-computer interface touch screen through a local area network and can automatically generate original records.
In this embodiment, the first temperature sensor 28, the second temperature sensor 27, the third temperature sensor 29, and the temperature sensors in the device to be measured all use PT100 temperature sensors, and the use of temperature sensors of the same brand and the same model can avoid errors caused by the introduction of different sensors. The fan 20 is an axial flow fan, which may be a commercially available axial flow fan, such as a T35-11 axial flow fan. The control device 21 is a PLC programmable controller, which may also be commercially available, such as PLC FX2N-32 MR.
The utility model discloses each component among the standard device is current component, for example level sensor, water pump, automatically controlled three-way valve, solenoid valve, fan, step motor, temperature sensor and controlling means etc. all can choose for use the model of selling on the market. For the electric control part, the existing parts are provided with corresponding interfaces, and the corresponding interfaces of the parts are connected without designing the principle of an internal circuit. The functions and methods of use of the various components of the standard device of the present invention are also well known and may be used by those skilled in the art in accordance with the instructions for use of the selected model and with software and/or tools. The components can also refer to the existing use method, namely the computer program related to the utility standard device is the prior art, and the application mainly improves the structure of the device and does not relate to the improvement of the computer program.
The utility model discloses a constant elevation first-class metal measuring device standard device, when carrying out the examination of examining the measuring device, another delivery port of automatically controlled three-way valve with examine the measuring device and communicate, the absolute value of the difference of the internal temperature of equivalent device and ambient temperature is less than or equal to 1 ℃, the absolute value of the difference of the temperature in the examined measuring device and ambient temperature is less than or equal to 1 ℃, and the absolute value of the difference of the temperature in the high temperature water tank and ambient temperature is less than or equal to 1 ℃, control automatically controlled three-way valve and be in the feed liquor position, for the water supply of measuring device body, when the water level reaches the position that first level sensor locates, control automatically controlled three-way valve and be in the stop position, simultaneously first water pump action, take unnecessary water out, make the water level stabilize at the liquid level height that nominal volume value corresponds, then control automatically controlled three-way valve and be in the tapping position, put the internal water of measuring, calibrating the gauge to be detected; the standard device can accurately control the nominal liquid level value (namely the liquid level height corresponding to the nominal volume value) in the measuring device body, and the verification accuracy of the measured device is guaranteed. The fan 20 is used for operating when the difference between the water temperature and the environment temperature does not meet the requirement, so that the difference between the water temperature and the environment temperature meets the requirement.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or modifications within the technical scope of the present invention, and all should be covered by the scope of the present invention.
Claims (10)
1. A liquid level control mechanism of a standard device of a constant-elevation equal-grade metal measuring device is characterized by comprising: the device comprises a stainless steel pipe, a first liquid level sensor and a first water pump;
one end of the stainless steel pipe is inserted into a metering neck of the first-class metal measuring device and fixed at the central horizontal position of the liquid level corresponding to the nominal volume value, and the other end of the stainless steel pipe is connected with the first water pump; the first liquid level sensor is arranged in an overflow cover at the upper end of the metering neck; the first liquid level sensor and the first water pump are respectively connected with the control device.
2. The fluid level control mechanism of claim 1, wherein: the overflow cover is provided with a support plate, the support plate is provided with a fastener, the stainless steel pipe penetrates through the support plate and is inserted into a metering neck of a first-class metal measuring device, and the stainless steel pipe is fixed on the support plate through the fastener, so that one end of the stainless steel pipe is fixed at the central horizontal position of the liquid level corresponding to the nominal volume value.
3. The fluid level control mechanism of claim 1, wherein: and a one-way valve is also arranged in the stainless steel pipe.
4. The utility model provides a first-class metal ware standard device of invariable elevation which characterized in that: comprising a level control mechanism as claimed in any one of claims 1-3.
5. A constant level first grade metal gauge calibration device according to claim 4, wherein: the automatic measuring device also comprises a measuring device body, an electric control three-way valve, a high-level water tank, a fan, a stepping motor and a support frame; the measuring device body is arranged on the supporting frame, a measuring neck is arranged at the upper end of the measuring device body, an overflow cover is arranged at the upper end of the measuring neck, and an electric control three-way valve is arranged at the lower end of the measuring device body; the electric control three-way valve is communicated with a water outlet of the high-level water tank through a first pipeline, and a first electromagnetic valve is arranged on the first pipeline; a first temperature sensor is arranged in the gauge body, a second temperature sensor is arranged in the high-level water tank, and a third temperature sensor and a fan are arranged in the environment where the standard device is located;
the electric control three-way valve is connected with the stepping motor through a shaft coupler, and the stepping motor, the first electromagnetic valve, the first temperature sensor, the second temperature sensor, the third temperature sensor and the fan are respectively connected with the control device.
6. A constant level first grade metal gauge calibration device according to claim 5, wherein: the measuring instrument body comprises an upper cone body, a cylinder body and a lower cone body which are sequentially communicated, the upper end of the upper cone body is provided with the measuring neck, and the lower end of the lower cone body is provided with the electric control three-way valve.
7. A constant level first grade metal gauge calibration device according to claim 5, wherein: the number of the third temperature sensors is two, and the two third temperature sensors are respectively arranged at positions 1.5m and 2.7m away from the ground.
8. A constant level first grade metal gauge calibration device according to claim 5, wherein: a second liquid level sensor is also arranged in the high-level water tank, a water inlet of the high-level water tank is communicated with a second water pump through a second pipeline, and a second electromagnetic valve is arranged on the second pipeline; and the second liquid level sensor, the second water pump and the second electromagnetic valve are respectively connected with the control device.
9. A constant level first grade metal gauge calibration device according to claim 5, wherein: the liquid level measuring device also comprises a liquid level pipe and a measuring neck scale; the liquid level pipe is communicated with the measuring device body, and the liquid level pipe is adjacent to and parallel to the measuring neck; and a metering neck scale is arranged on the liquid level pipe.
10. A constant level isopipe apparatus as claimed in any one of claims 5 to 9, wherein: the intelligent control system further comprises a human-computer interface touch screen, and the human-computer interface touch screen is in communication connection with the control device through the RS 422.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021055212.7U CN212513235U (en) | 2020-06-10 | 2020-06-10 | Constant-elevation first-class metal measuring device standard device and liquid level control mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021055212.7U CN212513235U (en) | 2020-06-10 | 2020-06-10 | Constant-elevation first-class metal measuring device standard device and liquid level control mechanism thereof |
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| CN212513235U true CN212513235U (en) | 2021-02-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514122A (en) * | 2021-05-28 | 2021-10-19 | 新疆维吾尔自治区计量测试研究院 | Metal measuring device capacity comparison method and measuring method verification system |
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2020
- 2020-06-10 CN CN202021055212.7U patent/CN212513235U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514122A (en) * | 2021-05-28 | 2021-10-19 | 新疆维吾尔自治区计量测试研究院 | Metal measuring device capacity comparison method and measuring method verification system |
| CN113514122B (en) * | 2021-05-28 | 2024-04-26 | 新疆维吾尔自治区计量测试研究院 | Capacity comparison method and measuring method verification system for metal gauge |
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