Temperature display instrument calibration device

Abstract

The utility model provides a temperature display instrument calibration device, which comprises a case, a standard temperature instrument, a calibration temperature instrument and a liquid storage tank, a measuring tube is arranged in the case, the standard temperature instrument and the calibration instrument are respectively provided with a metal guide rod A and a metal guide rod B, the metal guide rod A and the metal guide rod B are respectively positioned at two ends of the measuring tube, and the liquid storage tank is connected with the standard temperature instrument and the calibration temperature instrument. A water guide pipe is detachably connected to one side of the measuring pipe, a water pump is arranged at one end of the water guide pipe and located in a water storage tank, and a heating ring is arranged on the inner wall of the water storage tank; the upper end of the water storage tank is detachably connected with a water conveying pipe, a fourth electromagnetic valve is arranged on the water conveying pipe, the water conveying pipe is detachably connected with a liquid storage tank, and the liquid storage tank is arranged above the machine box. According to the utility model, the solution in the liquid storage tank is heated through the water storage tank and is stored at a constant temperature, the solution is conveyed into the measuring pipe to be measured by the standard temperature instrument and the calibration instrument, and the measurement is more accurate through the comparison of the standard instrument.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature display instruments, and mainly relates to a calibration device for a temperature display instrument. Background Technique

[0002] As is well known, temperature display instruments can accurately and timely reflect the operating status of thermal equipment and systems, providing reliable operation basis for operators. The quality of temperature display instruments will directly affect the quality of heat-treated workpieces. Therefore, these temperature control instruments must be periodically calibrated to ensure the normal operation of these temperature measuring instruments.

[0003] Existing temperature display instruments, such as a calibration device for a thermal power plant working instrument with the patent number CN201421341682.7, relate to the technical field of thermometer calibration. It includes a housing, a liquid tank is arranged inside the housing, the liquid tank is filled with a constant temperature medium, the constant temperature medium is heated and temperature-controlled by a heating device, a calibration cup is placed on the notch of the liquid tank, the bottom of the calibration cup is immersed in the constant temperature medium, a round hole for inserting a thermometer is opened on the notch wall of the liquid tank, the thermometer is inserted into the constant temperature medium through the round hole, an inner heat preservation door and an outer heat preservation door are arranged on the top of the housing, both the inner heat preservation door and the outer heat preservation door are hinged to the housing, and the hinge points of the inner heat preservation door and the outer heat preservation door are respectively located on both sides of the housing.

[0004] However, since the thermometer of the existing temperature display instrument calibration device is directly placed in the liquid tank for detection, this design has no comparison parameters, and at the same time, the liquid tank has a certain area, so the water cooling speed at different positions is also different, resulting in a certain error in the detection results. Summary of the Invention

[0005] The present invention provides a calibration device for a temperature display instrument, which is used to solve the technical problem proposed in the background technique that since the thermometer of the existing temperature display instrument calibration device is directly placed in the liquid tank for detection, this design has no comparison parameters, and at the same time, the liquid tank has a certain area, so the water cooling speed at different positions is also different, resulting in a certain error in the detection results.

[0006] To solve the technical problems proposed in the background technique, the solution of the present invention is: a calibration device for a temperature display instrument, including a chassis, a standard temperature instrument, a calibration temperature instrument, and a liquid storage tank. A measuring tube is arranged inside the chassis. Metal guide rods A and B are respectively installed on the standard temperature instrument and the calibration instrument. Metal guide rod A and metal guide rod B are respectively located at both ends of the measuring tube. One side of the measuring tube is detachably connected to a water conduit. One end of the water conduit is provided with a water pump. The water pump is located in a water storage tank, and a heating ring is arranged on the inner wall of the water storage tank.

[0007] The upper end of the water storage tank is detachably connected to a water delivery pipe, a fourth electromagnetic valve is provided on the water delivery pipe, the water delivery pipe is detachably connected to a liquid storage tank, and the liquid storage tank is arranged above the chassis.

[0008] Further, the length of the metal guide rod A is less than the length of the metal guide rod B.

[0009] Further, the measuring tube is arranged in a U-shaped manner, and a solenoid valve is arranged in the middle of the measuring tube. A drain pipe is provided on the measuring tube on one side of the solenoid valve, a second solenoid valve is provided on the drain pipe, the drain pipe is detachably connected to the water storage tank, a second water pump is arranged in the water storage tank, the second water pump is detachably connected to a second water delivery pipe, the second conduit is detachably connected to the liquid storage tank, and a second drain pipe is arranged on one side of the water storage tank. A third solenoid valve is provided on the second drain pipe, and a heat preservation sleeve is arranged outside the measuring tube.

[0010] Further, a spiral heating pipe is suspended at the upper end of the inner wall of the water storage tank, and the lower end of the spiral heating pipe is located above the water pump.

[0011] Further, a driving motor is arranged on the inner side of the cover plate of the liquid storage tank. The driving shaft of the driving motor is connected to a first rotating rod, a plurality of stirring rods are arranged on the outer side of the first rotating rod, and a second heating ring is arranged on the inner wall of the liquid storage tank.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, a measuring tube is arranged in the chassis, and metal guide rods A and B are arranged below both the standard temperature meter and the calibration meter;

[0014] Thus, when detection is required, the solution in the liquid storage tank is transmitted to the water storage tank through the water delivery pipe, heated at a constant temperature, and then the pump transmits the heated water to the measuring tube through the conduit. Since there is a solenoid valve in the middle of the measuring tube, the solenoid valve is closed in the early stage, and then the standard temperature meter tests the solution in the measuring tube. After a period of time, the solenoid valve is opened, so that the solution enters the other end of the measuring tube. At this time, the calibration meter measures. When the measured result is the same as that of the standard temperature meter, the calibrated meter is qualified. If there is a deviation, the deviation value can be calculated based on the reading and adjusted. Description of the Drawings

[0015] Figure 1 is a schematic flow chart of the present utility model;

[0016] Figure 2 is a schematic connection diagram of the water storage tank of the present utility model;

[0017] Figure 3It is a schematic plan view of the calibration device of the present utility model.

[0018] In the figure: 1. Chassis; 11. Measuring tube; 111. Heat preservation sleeve; 12. Electromagnetic valve; 13. Drain pipe; 14. Second electromagnetic valve; 15. Water storage tank; 16. Second water pump; 17. Second conduit; 18. Second drain pipe; 19. Third electromagnetic valve; 2. Standard temperature instrument; 3. Calibration temperature instrument; 4. Liquid storage tank; 41. Driving motor; 42. First rotating rod; 43. Stirring rod; 44. Second heater; 5. Metal guide rod A; 6. Metal guide rod B; 7. Water conduit; 71. Water pump; 8. Water storage tank; 81. Heating ring; 82. Water delivery pipe; 83. Spiral heating pipe. Detailed implementation manners

[0019] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixedly installed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0021] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0022] Embodiment, please refer to the attached Figures 1-3 , A temperature display instrument calibration device, including a chassis 1, a standard temperature instrument 2, a calibration temperature instrument 3, and a liquid storage tank 4. A measuring tube 11 is arranged in the chassis 1. Metal guide rods A 5 and B 6 are respectively installed on the standard temperature instrument 2 and the calibration instrument 3. The metal guide rods A 5 and B 6 are respectively located at both ends of the measuring tube 11. One side of the measuring tube 11 is detachably connected to a water conduit 7. One end of the water conduit 7 is provided with a water pump 71. The water pump 71 is located in a water storage tank 8. A heating ring 81 is arranged on the inner wall of the water storage tank 8;

[0023] The upper end of the water storage tank 8 is detachably connected to a water delivery pipe 82. A fourth electromagnetic valve 84 is provided on the water delivery pipe 82. The water delivery pipe 82 is detachably connected to a liquid storage tank 4. The liquid storage tank 4 is arranged above the chassis 1. The length of the metal guide rod A5 is less than the length of the metal guide rod B6.

[0024] In this application, during detection, the solution to be detected is first stirred and heated in the liquid storage tank 4. After being evenly stirred and heated, the solution is then transported to the water storage tank 8 for heat preservation. When in use, it is conveyed to the measuring pipe 11 by a water pump 71. Before input, the electromagnetic valve 12 is closed. When the solution in the measuring pipe 11 reaches a certain height, it is closed.

[0025] Then, the temperature of the standard temperature instrument is measured through the metal guide rod A5. After the temperature measurement is completed, the electromagnetic valve is opened. Thus, under the action of gravity, the solution is set at the same height on both sides in the measuring pipe. The corresponding metal guide rod B6 conducts the corresponding temperature to the calibration temperature instrument 3, facilitating the detection of the calibration temperature instrument 3. Moreover, since the solution is the same solution and has a small volume, the temperature difference is small, and the detection is more accurate.

[0026] The measuring pipe 11 is arranged in a U-shaped manner. A solenoid valve 12 is provided in the middle of the measuring pipe 11. A drain pipe 13 is provided on the measuring pipe 11 on one side of the solenoid valve 12. A second electromagnetic valve 14 is provided on the drain pipe 13. The drain pipe 13 is detachably connected to a water storage tank 15. A second water pump 16 is provided in the water storage tank 15. The second water pump 16 is detachably connected to a second water delivery pipe 17. The second conduit 17 is detachably connected to the liquid storage tank 4. And a second drain pipe 18 is provided on one side of the water storage tank 15. A third electromagnetic valve 19 is provided on the second drain pipe 18. A heat preservation sleeve 111 is provided outside the measuring pipe 11.

[0027] In this application, since the measuring pipe is arranged in a U-shaped manner, after the solution enters the measuring pipe, it is balanced at the same height from the bottom to both sides.

[0028] After the detection is completed, the second electromagnetic valve 14 on the drain pipe 13 is opened, and then the solution is discharged into the water storage tank 15. When the second electromagnetic valve 14 is opened a set number of times, the second water pump 16 operates, and the water is transported to the liquid storage tank 4 through the second water delivery pipe 17 for recycling.

[0029] A spiral heating pipe 83 is suspended at the upper end of the inner wall of the water storage tank 8, and the lower end of the spiral heating pipe 83 is located above the water pump 71. A driving motor 41 is provided on the inner side of the cover plate of the liquid storage tank 4. The driving shaft of the driving motor 41 is connected to a first rotating rod 42. A plurality of stirring rods 43 are provided on the outer side of the first rotating rod 42. And a second heating ring 44 is provided on the inner wall of the liquid storage tank 4.

[0030] Operating principle: When the temperature display instrument is detecting, first install the standard temperature instrument 2 and the calibrated temperature instrument 3 on the chassis 1, and correspondingly install the metal guide rod A5 and the metal guide rod B6;

[0031] When detecting, first the second heating ring 44 heats the solution in the liquid storage tank 4. While heating, the drive motor 41 rotates to drive the first rotating rod 42 to rotate. The corresponding plurality of stirring rods 43 on the first rotating rod 42 mix and stir the solution in the liquid storage tank 4, so that the solution is evenly heated and the temperature rises;

[0032] After the heating is completed, after the fourth solenoid valve 84 on the water delivery pipe 82 is opened, water then enters the water storage tank 8, and the heating ring 81 in the water storage tank 8 keeps it warm, so that the water in the water storage tank 8 is always at a constant temperature;

[0033] When detection is required, the corresponding water pump operates, and the water in the water storage tank 8 is pumped out, transmitted through the water guide pipe 7 to the measuring pipe 11. After pumping for a period of time, the water pump stops operating. At the same time, the metal guide rod A5 conducts the temperature, so that the standard temperature instrument 2 detects the specified temperature;

[0034] After the data detection is completed, the solenoid valve 12 is opened. Since the measuring pipe 11 is U-shaped, the water is affected by gravity and flows to the other side of the measuring pipe. The metal guide rod B6 transmits the temperature to the calibrated temperature instrument 2 for corresponding temperature display, so as to judge whether the calibrated temperature instrument 3 is qualified. When there is a deviation, corresponding debugging is carried out;

[0035] After the detection is completed, the second solenoid valve 14 is opened, and the solution in the measuring pipe 11 is output, transmitted through the drain pipe 13 to the water storage tank 15. The second water pump 16 in the water storage tank 15 then operates to pump the water in the water storage tank 15 into the liquid storage tank 5.

[0036] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and are not limitations of the present invention. The described specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A temperature display instrument calibration device, characterized in that: It includes a chassis (1), a standard temperature meter (2), a calibrated temperature meter (3), and a liquid storage tank (4). A measuring tube (11) is arranged inside the chassis (1). A metal guide rod A (5) and a metal guide rod B (6) are respectively installed on the standard temperature meter (2) and the calibrated temperature meter (3). The metal guide rod A (5) and the metal guide rod B (6) are respectively located at both ends of the measuring tube (11). One side of the measuring tube (11) is detachably connected to a water conduit (7). One end of the water conduit (7) is provided with a water pump (71). The water pump (71) is located inside a water storage tank (8). A heating ring (81) is provided on the inner wall of the water storage tank (8). The upper end of the water storage tank (8) is detachably connected to a water delivery pipe (82). A fourth solenoid valve (84) is provided on the water delivery pipe (82). The water delivery pipe (82) is detachably connected to the liquid storage tank (4). The liquid storage tank (4) is arranged above the chassis (1).

2. The calibration device for a temperature display instrument according to claim 1, characterized in that: The length of the metal guide rod A (5) is less than the length of the metal guide rod B (6).

3. The calibration device for a temperature display instrument according to claim 1, characterized in that: The measuring tube (11) is arranged in a U - shaped manner. A solenoid valve (12) is arranged in the middle of the measuring tube (11). A drain pipe (13) is provided on the measuring tube (11) on one side of the solenoid valve (12). A second solenoid valve (14) is provided on the drain pipe (13). The drain pipe (13) is detachably connected to a water storage tank (15). A second water pump (16) is provided inside the water storage tank (15). The second water pump (16) is detachably connected to a second water conduit (17). The second water conduit (17) is detachably connected to the liquid storage tank (4). A second drain pipe (18) is provided on one side of the water storage tank (15). A third solenoid valve (19) is provided on the second drain pipe (18).

4. A temperature display instrument calibration device according to claim 1, characterized in that: A heat - insulating sleeve (111) is provided outside the measuring tube (11).

5. A temperature display meter calibration device according to claim 1, wherein: A spiral heating tube (83) is suspended at the upper end of the inner wall of the water storage tank (8). The lower end of the spiral heating tube (83) is located above the water pump (71).

6. The calibration device for a temperature display instrument according to claim 1, characterized in that: A drive motor (41) is provided inside the cover of the liquid storage tank (4). The drive shaft of the drive motor (41) is connected to a first rotating rod (42). A plurality of stirring rods (43) are provided on the outside of the first rotating rod (42). A second heating ring (44) is provided on the inner wall of the liquid storage tank (4).

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