Intermediate checking device for wide-range pressure sensor

Abstract

The utility model discloses a period checking device for a wide-range pressure sensor, which comprises a base, a jack main body is arranged on the base, and a jack lifting column is arranged on the jack main body; the top seat presses the top of the jack main body and exposes the jack lifting column; the pressure sensor limiter is inversely mounted on the top seat, a pressure gauge is mounted at the top end in the pressure sensor limiter, and a pressure sensor body and a thick gasket are sequentially arranged at the bottom end of the pressure gauge in a penetrating manner; the pressure sensor detection device is simple in principle, simple in structure, low in cost, convenient to carry, basically unlimited in application scene, and capable of rapidly detecting whether one or more pressure sensors are abnormal or not at the same time. And the misuse possibility of the abnormal state sensor is quickly eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensor verification, and more specifically, to a period verification device for a large-range pressure sensor. Background Art

[0002] The existing period inspection device for large-range pressure sensors can meet the period inspection requirements of 3 to 6 large-range pressure sensors with a diameter of φ26mm;

[0003] However, the existing large-range pressure sensor period verification device has a large overall volume. During the verification period, the large-range pressure sensor needs to be placed between the corresponding detection sensor and the clamping structure. During the verification and detection, only one group of large-range pressure sensors can be detected at a time; for example, a pressure sensor detection device disclosed in the Chinese patent document with publication number CN213748899U;

[0004] This results in the poor portability of the period verification device for the large-range pressure sensor, which results in more restricted application scenarios and poor flexibility of use;

[0005] Moreover, only one group of large-range pressure sensors can be detected each time, the detection efficiency is low and the scope of use is limited. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In response to the problems existing in the prior art, the utility model provides a period verification device for a large-range pressure sensor to solve the technical problems mentioned in the background technology that the period verification device for a large-range pressure sensor in the prior art is difficult to carry, has low detection efficiency, poor flexibility of use, and has a limited scope of use.

[0008] (II) Technical solution

[0009] To achieve the above object, the utility model provides the following technical solutions: a period verification device for a large-range pressure sensor, comprising a base, a jack body is arranged on the base, and a jack lifting column is arranged on the jack body;

[0010] Top seat: Presses down the top of the jack body and exposes the jack lifting column

[0011] The pressure sensor stopper is mounted upside down on the top seat, a pressure gauge is installed on the top of the inner part of the pressure sensor stopper, and the pressure sensor body and the thick gasket are sequentially inserted at the bottom of the pressure gauge;

[0012] A detachable locking structure is arranged between the pressure sensor limiter, the top seat and the base.

[0013] The utility model is further configured such that the detachable locking structure includes a long screw, which is inserted from the bottom end of the base, and the top end passes through the top seat in turn and extends to the top end of the pressure sensor limiter, and the threaded knob has a nut for realizing the connection and locking between the top seat, the pressure sensor limiter and the base.

[0014] The utility model is further configured that the base, the top seat and the pressure sensor limiter are all provided with locking holes in cooperation with the long screw rod, so as to facilitate the installation of the long screw rod.

[0015] The utility model is further configured that the top seat is provided with a through slot, the diameter of which is larger than the lifting column of the jack and smaller than the diameter of the jack body, so as to facilitate the installation of the top seat on the jack body.

[0016] The utility model is further configured such that the pressure sensor body is connected to an external data collector to facilitate display of data of the pressure sensor body during verification.

[0017] The utility model is further configured such that the pressure gauge is externally connected to a pressure gauge display screen to facilitate display of data during pressure gauge verification.

[0018] The utility model is further configured that the pressure sensor limiter includes a connecting plate and a placement section, the connecting plate is connected to the top seat, and the placement section is located above the connecting plate and is used for placing the pressure gauge, the pressure sensor body and the thick gasket.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the utility model provides a period verification device for a large-range pressure sensor, which has the following beneficial effects:

[0021] The utility model has a simple principle, a simple structure, a low cost, is easy to carry, and has basically unlimited application scenarios. It can quickly detect whether one or more pressure sensors have abnormal phenomena at the same time, and quickly eliminate the possibility of misuse of sensors in abnormal states.

[0022] The utility model can perform random inspection tests on one or more pressure sensors at any time and anywhere, and ensure the authority of the data in the test report; the range of random inspection of large-range pressure sensors is wide, the assembly is simple, the tooling is light in weight, and it is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a period checking device for a large-range pressure sensor in the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0025] Figure 3 The overall structure of the utility model is shown in cross-section Figure 1 ;

[0026] Figure 4 The overall structure of the utility model is shown in cross-section Figure 2 .

[0027] In the figure: 1. base; 2. jack body; 3. jack lifting column; 4. top seat; 5. pressure sensor limiter; 6. pressure gauge; 7. pressure sensor body; 8. thick gasket; 9. long screw; 10. nut; 11. locking hole; 12. through slot; 13. pressure gauge display screen. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0031] See also Figure 1-4 , a period verification device for a large-range pressure sensor, comprising a base 1, a jack body 2 is arranged on the base 1, and a jack lifting column 3 is arranged on the jack body 2;

[0032] Top seat 4: presses the top of the jack body 2 and exposes the jack lifting column 3;

[0033] The pressure sensor stopper 5 is mounted on the top seat 4 in an inverted manner. A pressure gauge 6 is installed on the top of the pressure sensor stopper 5. The bottom of the pressure gauge 6 is interspersed with a pressure sensor body 7 and a thick gasket 8 in sequence.

[0034] A detachable locking structure is provided between the pressure sensor limiter 5 , the top seat 4 and the base 1 .

[0035] See also Figure 1-Figure 4As an implementation of the detachable locking structure: the detachable locking structure includes a long screw 9, which is inserted from the bottom end of the base 1, and the top end passes through the top seat 4 in turn, and extends to the top of the pressure sensor limiter 5, and the threaded knob has a nut 10, which is convenient for locking between the base 1, the top seat 4 and the pressure sensor limiter 5 through the cooperation of the long screw 9 and the nut 10, thereby achieving stable installation of the whole during verification.

[0036] See also Figure 1-Figure 4 As an implementation method of the long screw rod 9: the base 1, the top seat 4 and the pressure sensor limiter 5 are all provided with locking holes 11 to cooperate with the long screw rod 9, so as to facilitate the installation of the long screw rod 9 on the base 1, the top seat 4 and the pressure sensor limiter 5.

[0037] See also Figure 1-Figure 4 As an implementation method of the top seat 4: the top seat 4 is provided with a through groove 12, the diameter of the through groove 12 is larger than the diameter of the jack lifting column 3, and smaller than the diameter of the jack body 2, which is convenient for the stable installation of the top seat 4 on the jack body 2, and at the same time, it is convenient for the lifting and lowering of the jack lifting column 3.

[0038] See also Figure 1-Figure 4 , as an implementation of the pressure sensor body 7: the pressure sensor body 7 is connected to an external data collector for displaying the data value of the pressure sensor body 7 during the verification period.

[0039] See also Figure 1-Figure 4 As an implementation of the pressure gauge 6: the pressure gauge 6 is externally connected to a pressure gauge display screen 13 for displaying the data value of the pressure gauge 6 during the verification period.

[0040] See also Figure 1-Figure 4 , as an implementation method of the pressure sensor limiter 5: the pressure sensor limiter 5 includes a connecting plate and a placement section, the connecting plate is connected to the top seat 4, the placement section is located above the connecting plate, and is used to place the pressure gauge 6, the pressure sensor body 7 and the thick gasket 8.

[0041] In summary, when the overall equipment is in use:

[0042] 1. Pass four long screws 9 through the base 1;

[0043] 2. Install the jack body 2 on the base 1 and clamp it between the four long screws 9;

[0044] 3. Install the top seat 4 to press the top of the jack and expose the lifting column;

[0045] 4. Install the pressure gauge 6 on the top of the pressure sensor stopper 5, and connect the pressure gauge 6 to the external pressure gauge display screen 13. Then, insert the pressure sensor and the thick gasket 8 into the pressure sensor stopper 5 in sequence, and connect the pressure sensor body 7 to the external data acquisition device.

[0046] 5. After step 4 is completed, the pressure sensor stopper 5 is buckled on the top seat 4 as a whole and passed through the long screw 9;

[0047] 6. After tightening four nuts 10 onto the top of the long screw rod 9, the overall installation is completed.

[0048] Directions:

[0049] Take the test of four pressure sensor bodies 7 as an example, the tested objects have the same accuracy level:

[0050] After the verification device, the large-range pressure sensor and its test system are all assembled, the jack is operated electrically or manually to raise the jack lifting column 3 in the center until it hits the pressure sensor body 7. At this time, the data acquisition device and the pressure gauge display screen 13 connected to the pressure sensor body 7 will generate pressure data;

[0051] Because it is a series structure, theoretically the readings should be the same, the greater the lifting force of the center column of the jack, the four data of the data collector and the pressure gauge display screen 13 record the data synchronously;

[0052] In this process, the load is applied to the pressure gauge display screen 13 to indicate the stage load value such as 500kg, 1000kg, 1500kg, etc., and the indicated engineering value data of the four pressure sensor bodies 7 in the data collector are recorded simultaneously. The test results are evaluated by comparing the indicated error requirements of multiple devices:

[0053] First, the large-scale pressure sensor body 7 to be checked is used to compare and measure the data on the pressure gauge display screen 13, and the measured values ​​are y1, y2, y3...yn, and the average value of y1, y2, y3...yn is calculated as (where U is the expanded uncertainty when the checked device is used to measure the check standard), and the check result is considered satisfactory. Otherwise, the cause needs to be found or the sensor needs to be deactivated to determine the effectiveness and accuracy of the sensor during the check. In summary, the period check activities of the large-scale pressure sensor are realized through the check device of the large-scale pressure sensor and the relevant evaluation standards.

[0054] In all the schemes mentioned above, the connection between two parts can be selected according to the actual situation by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents;

[0055] In all the schemes mentioned above, those involving the operation of electrical components are controlled by the controller unless otherwise clearly described. Since the devices matched with the controller are commonly used devices, their control principles and line connections are all existing well-known and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A period checking device for a large-range pressure sensor, comprising a base (1), characterized in that: A jack body (2) is arranged on the base (1), and a jack lifting column (3) is arranged on the jack body (2); Top seat (4): presses down the top of the jack body (2) and exposes the jack lifting column (3) A pressure sensor stopper (5) is mounted upside down on the top seat (4), a pressure gauge (6) is mounted on the top of the pressure sensor stopper (5), and a pressure sensor body (7) and a thick gasket (8) are sequentially inserted into the bottom of the pressure gauge (6); A detachable locking structure is provided between the pressure sensor limiter (5), the top seat (4) and the base (1).

2. The period checking device for a large-range pressure sensor according to claim 1, characterized in that: The detachable locking structure comprises a long screw (9), which is inserted from the bottom end of the base (1), and the top end of which passes through the top seat (4) in turn and extends to the top end of the pressure sensor limiter (5), and the threaded knob has a screw nut (10).

3. The period checking device for a large-range pressure sensor according to claim 2, characterized in that: The base (1), the top seat (4) and the pressure sensor stopper (5) are all provided with locking holes (11) in cooperation with the long screw rod (9).

4. The period checking device for a large-range pressure sensor according to claim 1, characterized in that: The top seat (4) is provided with a through slot (12), the diameter of the through slot (12) being larger than the diameter of the jack lifting column (3) and smaller than the diameter of the jack body (2).

5. A period checking device for a large-range pressure sensor according to any one of claims 1 to 4, characterized in that: The pressure sensor body (7) is connected to an external data collector.

6. The period checking device for a large-range pressure sensor according to claim 5, characterized in that: The pressure gauge (6) is externally connected to a pressure gauge display screen (13).

7. The period checking device for a large-range pressure sensor according to claim 1, characterized in that: The pressure sensor stopper (5) comprises a connecting plate and a placement section, wherein the connecting plate is connected to the top seat (4), and the placement section is located above the connecting plate and is used to place the pressure gauge (6), the pressure sensor body (7) and the thick gasket (8).

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