CN211317613U

CN211317613U - Testing device of double-flange differential pressure transmitter

Info

Publication number: CN211317613U
Application number: CN201921481076.5U
Authority: CN
Inventors: 邹秀燕; 刘青
Original assignee: Jiangsu Jinshida Instrument Technology Co ltd
Current assignee: Jiangsu Jinshida Instrument Technology Co ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-08-21
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a double flange differential pressure transmitter's testing arrangement, which comprises a tank body, be equipped with connecting pipe and lower connecting pipe about being on the right side wall of the jar body, the right side of the jar body is equipped with the differential pressure transmitter body, the front and back end of differential pressure transmitter body is the symmetry and is equipped with the capillary, the one end that differential pressure transmitter body was kept away from to the capillary is all fixed and is equipped with the diaphragm flange, the diaphragm flange respectively with last connecting pipe and lower connecting pipe fixed connection, the front end of the jar body is fixed with the controller, the right side of controller is equipped with observes the frame, observe the frame embedding on the jar body. A double flange differential pressure transmitter's testing arrangement, be equipped with actuating mechanism and the mechanism that draws water, the operating personnel of being convenient for calculates the contrast of doing of standard pressure differential and differential pressure transmitter body demonstration through observing the quick record liquid level height of frame, can obtain the differential pressure detection precision of differential pressure transmitter body.

Description

Testing device of double-flange differential pressure transmitter

Technical Field

The utility model relates to a test equipment field, in particular to double flange differential pressure transmitter's testing arrangement.

Background

The differential pressure transmitter is a transmitter for measuring the pressure difference between two ends of the transmitter and outputs standard signals (such as 4-20 mA and 0-5V), the differential pressure transmitter is different from a common pressure transmitter in that the differential pressure transmitter has 2 pressure interfaces, the differential pressure transmitter is generally divided into a positive pressure end and a negative pressure end, and the pressure of the positive pressure end of the differential pressure transmitter can be measured only when being larger than the pressure of a negative pressure section.

The existing differential pressure transmitter has various processing procedures in the production process, and in the production process of large-batch differential pressure transmitters, the detection precision of the differential pressure transmitter can be changed due to the fact that any procedure is out of order, and the standard requirement cannot be met, so that the detection precision of the differential pressure transmitter needs to be tested.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a double flange differential pressure transmitter's testing arrangement can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a testing device of a double-flange differential pressure transmitter comprises a tank body, wherein an upper connecting pipe and a lower connecting pipe are arranged on the upper part and the lower part of the right side wall of the tank body, a differential pressure transmitter body is arranged on the right side of the tank body, capillary tubes are symmetrically arranged at the front end and the rear end of the differential pressure transmitter body, the end of the capillary tube far away from the differential pressure transmitter body is fixedly provided with a diaphragm flange which is respectively and fixedly connected with an upper connecting pipe and a lower connecting pipe, a controller is fixed at the front end of the tank body, an observation frame is arranged at the right side of the controller and embedded in the tank body, a transparent plate is fixed in the inner cavity of the observation frame, scales are arranged on the transparent plate, a shell is fixed at the upper end of the tank body, the water storage tank is fixed in the inner cavity of the shell, the water pumping mechanisms are symmetrically arranged on the left side and the right side of the outer side of the water storage tank, and the driving mechanisms are symmetrically arranged on the outer side of the water pumping mechanisms.

Preferably, the wall of the inner cavity of the observation frame is provided with illuminating lamps at uniform intervals, and the illuminating lamps are positioned on the outer side of the transparent plate.

Preferably, the driving mechanism comprises a driving motor, a driving screw rod and a ball nut, the driving motor is fixed at the top of the inner cavity of the shell, the lower end of an output shaft of the driving motor is fixedly connected with the driving screw rod, the lower end of the driving screw rod is fixedly connected with the upper end of the tank body, the ball nut is sleeved on the driving screw rod, and the side end, far away from the water storage tank, of the ball nut is slidably connected with the side wall of the shell.

Preferably, the mechanism of drawing water includes suction pump, aqueduct, straight tube and hose, the inner chamber of water storage box is bilateral symmetry and is fixed with the straight tube, the upper end of straight tube all with hose fixed connection, the hose is kept away from the one end of straight tube all with the upper end fixed connection of suction pump, the lower extreme of suction pump all with the upper end fixed connection of aqueduct, the lower extreme of aqueduct all runs through the upper end of the jar body and extends to its inner chamber, the side and the ball nut fixed connection of water storage box are kept away from to the suction pump.

Preferably, the controller includes button, calculator, controller body and display screen, be equipped with the button on the controller body, the top of button is what is equipped with display screen and calculator from top to bottom, button, calculator and display screen all with controller body electric connection.

Preferably, the differential pressure transmitter body, the driving mechanism and the water pumping mechanism are all electrically connected with the controller.

Compared with the prior art, the utility model discloses following beneficial effect has:

through being equipped with actuating mechanism and the mechanism of drawing water, can draw water or add water in the internal stoste of straight tube disect insertion jar, the straight tube is taken out after the liquid level changes and is carried out the liquid level count, can reduce the impact of the water of adding to the internal original water of jar, make jar body liquid level not produce too big fluctuation, the operating personnel of being convenient for records the liquid level height through observing the frame fast, also improve the precision of liquid level simultaneously, it calculates standard pressure value and does the contrast with the demonstration of pressure difference changer body again to multiply gravity accelerometer through the pressure value equals liquid density, can obtain the pressure difference detection precision of pressure difference changer body.

Drawings

Fig. 1 is an overall structure diagram of a testing device of a double-flange differential pressure transmitter of the present invention;

FIG. 2 is a cross-sectional view of the testing device of the dual-flange differential pressure transmitter of the present invention;

FIG. 3 is a diagram of a controller structure of a testing device of a double-flange differential pressure transmitter according to the present invention;

fig. 4 is the utility model discloses a ball nut of double flange differential pressure transmitter's testing arrangement overlooks connection diagram.

In the figure: 1. a tank body; 2. a housing; 3. a controller; 31. pressing a key; 32. a calculator; 33. a controller body; 34. a display screen; 4. calibration; 5. a viewing frame; 6. a transparent plate; 7. a lower connecting pipe; 8. an upper connecting pipe; 9. a diaphragm flange; 10. a capillary tube; 11. a differential pressure transmitter body; 12. a drive mechanism; 121. a drive motor; 122. driving the screw rod; 123. a ball nut; 13. a water pumping mechanism; 131. a water pump; 132. a water conduit; 133. a straight pipe; 134. a hose; 14. a water storage tank; 15. an illuminating lamp.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1-4, a testing device for a double-flange differential pressure transmitter comprises a tank body 1, an upper connecting pipe 8 and a lower connecting pipe 7 are arranged on the upper and lower parts of the right side wall of the tank body 1, a differential pressure transmitter body 11 is arranged on the right side of the tank body 1, capillary pipes 10 are symmetrically arranged at the front and rear ends of the differential pressure transmitter body 11, diaphragm flanges 9 are fixedly arranged at the ends of the capillary pipes 10 far away from the differential pressure transmitter body 11, the diaphragm flanges 9 are respectively and fixedly connected with the upper connecting pipe 8 and the lower connecting pipe 7, a controller 3 is fixed at the front end of the tank body 1, an observation frame 5 is arranged at the right side of the controller 3, the observation frame 5 is embedded in the tank body 1, a transparent plate 6 is fixed in the inner cavity of the observation frame 5, scales 4 are arranged on the transparent plate 6, a shell 2 is fixed at the upper end of the tank body 1, the driving mechanisms 12 are symmetrically arranged on the outer side of the water pumping mechanism 13, and an air pressure detection sensor 15 is fixed on the top of the inner cavity of the tank body 1.

Be even equidistant being equipped with light 15 on the inner chamber wall of observing frame 5, light 15 is located the outside of transparent plate 6, is convenient for to the observation of water level.

The driving mechanism 12 comprises a driving motor 121, a driving screw 122 and a ball nut 123, the driving motor 121 is fixed at the top of the inner cavity of the shell 2, the lower end of the output shaft of the driving motor 121 is fixedly connected with the driving screw 122, the lower end of the driving screw 122 is fixedly connected with the upper end of the tank body 1, the ball nut 123 is sleeved on the driving screw 122, the ball nut 123 is far away from the side end of the water storage tank 14 and is slidably connected with the side wall of the shell 2, the water pump 131 is convenient to move linearly, and the straight pipe 133 moves linearly up and down.

The water pumping mechanism 13 comprises a water pump 131, a water guide pipe 132, a straight pipe 133 and a hose 134, the straight pipes 133 are fixed in the inner cavity of the water storage tank 14 in a bilateral symmetry manner, the upper ends of the straight pipes 133 are fixedly connected with the hose 134, one ends of the hose 134, far away from the straight pipes 133, are fixedly connected with the upper end of the water pump 131, the lower ends of the water pump 131 are fixedly connected with the upper end of the water guide pipe 132, the lower ends of the water guide pipe 132 penetrate through the upper end of the tank body 1 and extend to the inner cavity of the tank body 1, and the side ends of the water pump 131, far away from the water storage tank 14, are fixedly connected with ball nuts 123, so that water in the water storage tank 14 is conveniently pumped into.

The controller 3 comprises a key 31, a calculator 32, a controller body 33 and a display screen 34, the key 31 is arranged on the controller body 33, the display screen 34 and the calculator 32 are arranged above and below the key 31, and the key 31, the calculator 32 and the display screen 34 are all electrically connected with the controller body 33, so that data display and differential pressure calculation are facilitated.

The differential pressure transmitter body 11, the driving mechanism 12 and the pumping mechanism 13 are all electrically connected with the controller 3, so that the controller 3 can control each electric device conveniently.

It should be noted that, the utility model relates to a testing device for a double-flange differential pressure transmitter, the through pipe on the tank body 1 is the same as the outside, the standard atmospheric pressure value is set in the tank body 1, the driving motor 121 of one group of driving mechanism 12 works to drive the driving screw 122 to rotate, the water pump 131 makes up-and-down linear motion through the action of the ball nut 123, the straight pipe 133 is inserted under the liquid level to pump water, when the liquid level in the tank body 1 is too low, the water in the water storage tank 14 can be pumped into the tank body 1 through the other group of water pump 131, when the straight pipe 133 is inserted under the liquid level to add water, the impact of the added water on the original water in the tank body 1 is reduced, so that the liquid level of the tank body 1 does not generate too large fluctuation, the operating personnel can record the liquid level height through the observation frame 5 quickly, in order to prevent the straight pipe 133 from having a, the driving mechanism 12 is provided to draw the straight pipe 133 away from the liquid surface, the upper connecting pipe 8 is located above the liquid surface, the lower connecting pipe 7 is on the same plane with the lower horizontal plane of the liquid, the differential pressure reading of the differential pressure transmitter body 11 is equal to the liquid density multiplied by the liquid level height multiplied by the gravity acceleration, because the liquid density and the gravity acceleration are known, the differential pressure reading of the differential pressure transmitter body 11 can be changed according to the height of the changed liquid surface, the driving mechanism 12 and the water pumping mechanism 13 are used to add water or pump water into the tank body 1 to change the liquid level, and record the liquid level, the calculator 32 is used to calculate the pressure value (standard value), the pressure is equal to the liquid density multiplied by the liquid level height multiplied by the gravity acceleration, the calculated pressure value is compared with the pressure difference value displayed by the differential pressure transmitter body 11 to detect the accuracy of the differential pressure transmitter, the recorded liquid level is convenient to see clearly.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a double flange differential pressure transmitter's testing arrangement, includes jar body (1), its characterized in that: the tank is characterized in that an upper connecting pipe (8) and a lower connecting pipe (7) are arranged on the right side wall of the tank body (1) in an upper and lower mode, a differential pressure transmitter body (11) is arranged on the right side of the tank body (1), capillary tubes (10) are symmetrically arranged at the front end and the rear end of the differential pressure transmitter body (11), a diaphragm flange (9) is fixedly arranged at one end, far away from the differential pressure transmitter body (11), of each capillary tube (10), the diaphragm flange (9) is fixedly connected with the upper connecting pipe (8) and the lower connecting pipe (7) respectively, a controller (3) is fixed at the front end of the tank body (1), an observation frame (5) is arranged on the right side of the controller (3), the observation frame (5) is embedded into the tank body (1), a transparent plate (6) is fixed in an inner cavity of the observation frame (5), scales (4) are arranged on the transparent plate (6), the water storage tank (14) is fixed in the inner cavity of the shell (2), the water pumping mechanisms (13) are symmetrically arranged on the left side and the right side of the outer side of the water storage tank (14), and the driving mechanisms (12) are symmetrically arranged on the outer side of the water pumping mechanisms (13).

2. The testing apparatus of a dual-flange differential pressure transmitter of claim 1, wherein: the inner cavity wall of the observation frame (5) is provided with illuminating lamps (15) at uniform intervals, and the illuminating lamps (15) are positioned on the outer side of the transparent plate (6).

3. The testing apparatus of a dual-flange differential pressure transmitter of claim 1, wherein: the driving mechanism (12) comprises a driving motor (121), a driving screw rod (122) and a ball nut (123), the driving motor (121) is fixed to the top of the inner cavity of the shell (2), the lower end of an output shaft of the driving motor (121) is fixedly connected with the driving screw rod (122), the lower end of the driving screw rod (122) is fixedly connected with the upper end of the tank body (1), the ball nut (123) is sleeved on the driving screw rod (122), and the ball nut (123) is far away from the side end of the water storage tank (14) and is slidably connected with the side wall of the shell (2).

4. The testing apparatus of a dual-flange differential pressure transmitter of claim 1, wherein: draw water mechanism (13) and include suction pump (131), aqueduct (132), straight tube (133) and hose (134), the inner chamber of water storage box (14) is bilateral symmetry and is fixed with straight tube (133), the upper end of straight tube (133) all with hose (134) fixed connection, the one end that straight tube (133) were kept away from in hose (134) all with the upper end fixed connection of suction pump (131), the lower extreme of suction pump (131) all with the upper end fixed connection of aqueduct (132), the lower extreme of aqueduct (132) all runs through the upper end of the jar body (1) and extends to its inner chamber, the side and ball nut (123) fixed connection of water storage box (14) are kept away from in suction pump (131).

5. The testing apparatus of a dual-flange differential pressure transmitter of claim 1, wherein: the controller (3) comprises a key (31), a calculator (32), a controller body (33) and a display screen (34), the key (31) is arranged on the controller body (33), the display screen (34) and the calculator (32) are arranged above and below the key (31) in a what manner, and the key (31), the calculator (32) and the display screen (34) are all electrically connected with the controller body (33).

6. The testing apparatus of a dual-flange differential pressure transmitter of claim 1, wherein: the differential pressure transmitter body (11), the driving mechanism (12) and the water pumping mechanism (13) are electrically connected with the controller (3).