Instrument adapter assembly and pressure verification equipment

Abstract

The instrument adapter assembly comprises an adapter base, a pressure gauge connector, an adapter shaft and an adapter connecting rod, the adapter shaft is rotationally arranged in a mounting hole of the adapter base, one end of the adapter shaft extends out of the adapter base and is provided with external threads, and the two ends of the adapter connecting rod are in threaded connection with the adapter shaft and the pressure gauge connector respectively; a first flow guide hole is formed in the adapter seat, an annular groove is formed in the adapter shaft in the circumferential direction, a second flow guide hole is formed in the bottom of the annular groove in the radial direction of the adapter shaft, and the first flow guide hole is communicated with the second flow guide hole through the annular groove; a third flow guide hole is further formed in the adapter shaft, and a fourth flow guide hole is formed in the adapter connecting rod; the first flow guide hole, the annular groove, the second flow guide hole, the third flow guide hole, the fourth flow guide hole and the pressure gauge connector are sequentially communicated. The utility model also discloses a pressure verification device. According to the utility model, the problem that the existing pressure verification equipment is tedious to use due to insufficient pressure output ports can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument calibration equipment, in particular to an instrument adapter component and pressure calibration equipment. Background Art

[0002] Traditional pressure calibration equipment generally includes a shell, a pressure-generating mechanism, and a pressure output structure, and only one standard pressure output port is set on the side of the shell. However, during the pressure gauge calibration work, it is necessary to pressurize both the gauge to be tested and the standard gauge at the same time. When using the pressure calibration equipment, it is necessary to connect a three-way pipe at the standard output port, and then connect the gauge to be tested and the standard gauge through the three-way pipe, so as to realize the calibration of the gauge to be tested by the pressure calibration equipment.

[0003] For users, they not only need to carry pressure calibration equipment, but also need to carry three-way pipes at all times. Once the three-way pipes are lost or not carried, the pressure gauge cannot be calibrated. In addition, even if the three-way pipes are carried, users still need to connect the three-way pipes to the standard pressure output port before calibration, which makes the calibration steps more cumbersome. Utility Model Content

[0004] The utility model aims to provide an instrument adapter assembly and a pressure calibration device, so as to solve the problem that the existing pressure calibration device is cumbersome to use due to insufficient pressure output ports.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] An instrument adapter assembly includes an adapter seat and a pressure gauge connector. The adapter seat is fixedly arranged and also includes an adapter shaft and an adapter connecting rod. The adapter seat is provided with a mounting hole, and the adapter shaft is rotatably arranged in the mounting hole. One end of the adapter shaft extends out of the adapter seat and is provided with an external thread. One end of the adapter connecting rod is threadedly connected to one end of the adapter shaft, and the other end of the adapter connecting rod is threadedly connected to the pressure gauge connector.

[0007] Optionally, a first guide hole is provided on the adapter seat, an annular groove is provided circumferentially at a position of the adapter shaft corresponding to the first guide hole, a second guide hole is provided radially along the adapter shaft at the bottom of the annular groove, and the first guide hole is connected with the second guide hole through the annular groove; a third guide hole connected with the second guide hole is also provided in the adapter shaft, and a fourth guide hole is provided in the adapter connecting rod; the first guide hole, the annular groove, the second guide hole, the third guide hole, the fourth guide hole, and the pressure gauge connector are connected in sequence.

[0008] Optionally, the instrument adapter assembly further includes a pipeline connector, which is mounted on a side wall of the adapter seat, and a through hole of the pipeline connector is connected to the first flow guide hole.

[0009] Optionally, the other end of the adapter shaft extends out of the adapter seat and is provided with a limiting convex ring, and the limiting convex ring abuts against the adapter seat.

[0010] Optionally, sealing grooves are respectively provided on both sides of the annular groove on the adapter shaft, and sealing ring assemblies are nested in the sealing grooves.

[0011] The utility model also provides a pressure calibration device, including a housing, a pressure-generating mechanism and a pressure output structure, wherein the pressure output structure is connected to the pressure-generating mechanism, and the pressure output structure includes:

[0012] A connecting pipe and an instrument adapter assembly as described above, one end of the connecting pipe is connected to the pressure-generating mechanism, the other end of the connecting pipe is connected to the instrument adapter assembly, and the adapter seat is fixed to the housing; or

[0013] n-way pipelines and n-1 instrument adapter assemblies as described above, one end of the n-way pipeline is connected to the pressure-generating mechanism, and the other n-1 ends of the n-way pipeline are respectively connected to n-1 instrument adapter assemblies, the adapter seat is fixed on the shell, and n is a positive integer greater than or equal to 3.

[0014] Optionally, a storage groove is provided on the back side of the shell, and the structure of the storage groove matches one or n-1 instrument adapter assemblies. In an uncalibrated state, one or n-1 instrument adapter assemblies are stored in the storage groove, and in a calibrated state, one or n-1 instrument adapter assemblies are rotated out of the storage groove.

[0015] Optionally, the receiving and releasing groove is provided with openings on two side surfaces of the shell, and when the pressure output structure includes two instrument adapter assemblies, the two instrument adapter assemblies are symmetrically arranged.

[0016] Optionally, when the pressure output structure includes n-1 instrument adapter assemblies, one instrument adapter assembly is used to connect a standard meter, and the other n-2 instrument adapter assemblies are used to connect a meter to be tested, and the meter to be tested is calibrated by comparing the indication difference between the standard meter and the meter to be tested.

[0017] Optionally, the pressure calibration equipment also includes a standard pressure module and a human-computer interaction unit. The standard pressure module is used to sense the standard pressure value of the pressure output structure in real time and display it through the human-computer interaction unit. One or n-1 instrument adapter assemblies are respectively used to connect the meter to be tested. The calibration of the meter to be tested is achieved by comparing the difference in indication between the standard pressure module and the meter to be tested.

[0018] By adopting the above technical solution, the utility model has the following advantages:

[0019] When using the utility model to calibrate a pressure gauge, there is no need to prepare a three-way pipeline separately. The gauge to be calibrated can be calibrated through the two instrument adapter assemblies that come with the pressure calibration equipment. The two instrument adapter assemblies can be stored in the shell when not calibrated, which has the advantages of not taking up space and good portability. During calibration, the two instrument adapter assemblies can be rotated out, which greatly improves both portability and the convenience of calibration and installation, and provides a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional structural schematic diagram of an instrument adapter assembly in the utility model;

[0021] Figure 2 It is a structural schematic diagram of a pressure calibration device in the utility model (in portable state);

[0022] Figure 3 It is a schematic diagram of the calibration state of a pressure calibration device in the utility model;

[0023] Figure 4 It is a structural schematic diagram of the pressure output structure in the utility model;

[0024] Figure 5 yes Figure 3 Front view of.

[0025] Reference numerals: 11, adapter seat, 111, first flow guide hole, 12, pressure gauge connector, 13, adapter shaft, 131, annular groove, 132, second flow guide hole, 133, third flow guide hole, 134, limiting convex ring, 135, sealing ring assembly, 14, adapter connecting rod, 141, fourth flow guide hole, 15, pipeline connector;

[0026] 2. Shell, 3. Connecting pipeline or n-way pipeline, 4. Retractable slot, 5. Human-machine interaction unit. DETAILED DESCRIPTION

[0027] In order to make the technical purpose, technical scheme and beneficial effects of the utility model clearer, the following Figure 1-5 The technical solution of the utility model is further illustrated with specific embodiments.

[0028] An embodiment of an instrument adapter assembly is as follows

[0029] Example 1

[0030] like Figure 1As shown, an instrument adapter assembly includes an adapter seat 11 and a pressure gauge connector 12. The adapter seat 11 is fixedly arranged, and also includes an adapter shaft 13 and an adapter connecting rod 14. The adapter seat 11 is provided with a mounting hole, and the adapter shaft 13 is rotatably arranged in the mounting hole. One end of the adapter shaft 13 extends out of the adapter seat 11 and is provided with an external thread. One end of the adapter connecting rod 14 is threadedly connected to one end of the adapter shaft 13, and the other end of the adapter connecting rod 14 is threadedly connected to the pressure gauge connector 12.

[0031] The rotatable structure of the instrument adapter assembly can change the position of the instrument in the pressure calibration equipment, providing greater flexibility.

[0032] Example 2

[0033] On the basis of Example 1, a first flow guide hole 111 is provided on the adapter seat 11, and the pressure medium of the pressure-generating mechanism enters through the first flow guide hole 111. An annular groove 131 is provided along the circumferential direction at the position of the adapter shaft 13 corresponding to the first flow guide hole 111, and a second flow guide hole 132 is provided at the bottom of the annular groove 131 along the radial direction of the adapter shaft 13. The second flow guide hole 132 is a through hole, and the first flow guide hole 111 is connected to the second flow guide hole 132 through the annular groove 131; the adapter shaft 13 A third flow guide hole 133 connected to the second flow guide hole 132 is also provided inside. Preferably, the third flow guide hole 133 is coaxial with the adapter shaft 13, and a fourth flow guide hole 141 is provided in the adapter connecting rod 14; the first flow guide hole 111, the annular groove 131, the second flow guide hole 132, the third flow guide hole 133, the fourth flow guide hole 141, and the pressure gauge connector 12 are connected in sequence to introduce the pressure medium of the pressure-generating mechanism into the standard gauge / gauge to be tested installed on the pressure gauge connector 12.

[0034] Example 3

[0035] On the basis of Example 2, the instrument adapter assembly further includes a pipeline connector 15 , which is installed on the side wall of the adapter seat 11 , and a through hole of the pipeline connector 15 is connected to the first flow guide hole 111 .

[0036] The pipeline connector 15 is used to connect an external pipeline to introduce the pressure medium of the pressure-generating mechanism. Specifically, the pipeline connector 15 can be fixed on the adapter 11 or threadedly connected to the adapter 11. When threaded connection is adopted, the pipeline connector 15 is easy to replace in later maintenance.

[0037] Example 4

[0038] On the basis of Example 2, the other end of the adapter shaft 13 extends out of the adapter seat 11 and is provided with a limiting protruding ring 134, which abuts against the adapter seat 11 to prevent the adapter shaft 13 from escaping from the adapter seat 11 when rotating.

[0039] Example 5

[0040] On the basis of Example 2, sealing grooves are respectively provided on both sides of the annular groove 131 of the adapter shaft 13, and sealing ring assemblies 135 are nested in the sealing grooves.

[0041] The sealing ring assembly 135 is used to seal the annular groove 131 to prevent the pressure medium in the annular groove 131 from overflowing, thereby ensuring that there will be no air leakage or liquid leakage during the rotation of the adapter shaft 13 along the adapter seat 11.

[0042] An embodiment of a pressure calibration device is as follows

[0043] A pressure calibration device comprises a housing 2, a pressure-generating mechanism and a pressure output structure, wherein the pressure output structure is connected to the pressure-generating mechanism, and the pressure output structure comprises:

[0044] A connecting pipe 3 and an instrument adapter assembly as described above, one end of the connecting pipe 3 is connected to the pressure-generating mechanism, the other end of the connecting pipe 3 is connected to the instrument adapter assembly, and the adapter seat 11 is fixed to the housing 2; or

[0045] n-way pipelines 3 and n-1 instrument adapter assemblies as described above, one end of the n-way pipeline 3 is connected to the pressure-generating mechanism, and the other n-1 ends of the n-way pipeline 3 are respectively connected to n-1 instrument adapter assemblies, the adapter seat 11 is fixed on the shell 2, and n is a positive integer greater than or equal to 3.

[0046] The connecting pipeline or n-way pipeline 3 is used to introduce the pressure medium of the pressure-generating mechanism into the standard gauge / to-be-tested gauge installed on the pressure gauge connector 12. During the calibration, the corresponding number of instrument adapter assemblies can be directly used to install the standard gauge and the gauge to be tested, without the need to carry the connecting pipeline or n-way pipeline 3 for installation and conversion, thus simplifying the calibration steps. At the same time, the instrument adapter assembly can be unfolded and exposed from the housing 2. When the pressure gauge is installed on the instrument adapter assembly, it is convenient for the user to read the pressure gauge value.

[0047] In this embodiment, the value of n is 3, that is, a three-way pipeline and two instrument adapter assemblies are provided.

[0048] Furthermore, in another embodiment, a receiving groove 4 is provided on the back of the housing 2, and the structure of the receiving groove 4 matches one or n-1 instrument adapter components, such as Figure 2 As shown, in the uncalibrated state, one or n-1 instrument adapter components are stored in the storage slot 4, which does not occupy the external space of the pressure calibration equipment and has good portability. Figure 3 or Figure 5 As shown, in the calibration state, one or n-1 instrument adapter components are rotated out from the storage slot 4 to facilitate calibration.

[0049] Furthermore, in another embodiment, the receiving and releasing groove 4 is provided with openings on two side surfaces of the shell 2, and when the pressure output structure includes two instrument adapter assemblies, the two instrument adapter assemblies are symmetrically arranged.

[0050] Preferably, if Figure 5 As shown, both instrument adapter assemblies can be rotated 180 degrees and completely exposed on both sides from the back of the housing 2, so that the user can observe the standard meter and the number to be checked at the same time, which is beneficial to the verification work.

[0051] Furthermore, in another embodiment, when the pressure output structure includes n-1 instrument adapter assemblies, one instrument adapter assembly is used to connect a standard meter, and the other n-2 instrument adapter assemblies are used to connect a meter to be tested, and the calibration of the meter to be tested is achieved by comparing the difference in indications between the standard meter and the meter to be tested.

[0052] Furthermore, in another embodiment, the pressure calibration equipment also includes a standard pressure module and a human-computer interaction unit 5. The standard pressure module is used to sense the standard pressure value of the pressure output structure in real time and display it through the human-computer interaction unit 5. One or n-1 instrument adapter assemblies are respectively used to connect the meter to be tested. The calibration of the meter to be tested is achieved by comparing the difference in indication between the standard pressure module and the meter to be tested.

[0053] The user can perform human-computer interaction through the human-computer interaction unit 5, such as inputting the verification result, etc. The human-computer interaction unit 5 is a prior art and will not be described in detail.

[0054] The standard pressure module may be any component available on the market that can achieve the above-mentioned purpose, such as a pressure sensor.

[0055] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0057] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

[0058] It should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An instrument adapter assembly, comprising an adapter seat and a pressure gauge connector, wherein the adapter seat is fixedly arranged, and characterized in that: It also includes an adapter shaft and an adapter connecting rod. The adapter seat is provided with a mounting hole. The adapter shaft is rotatably arranged in the mounting hole. One end of the adapter shaft extends out of the adapter seat and is provided with an external thread. One end of the adapter connecting rod is threadedly connected to one end of the adapter shaft, and the other end of the adapter connecting rod is threadedly connected to the pressure gauge connecting head.

2. The instrument adapter assembly according to claim 1, characterized in that: A first guide hole is provided on the adapter seat, an annular groove is provided circumferentially at a position of the adapter shaft corresponding to the first guide hole, a second guide hole is provided radially along the adapter shaft at the bottom of the annular groove, and the first guide hole is connected with the second guide hole through the annular groove; a third guide hole connected with the second guide hole is also provided in the adapter shaft, and a fourth guide hole is provided in the adapter connecting rod; the first guide hole, the annular groove, the second guide hole, the third guide hole, the fourth guide hole, and the pressure gauge connector are connected in sequence.

3. The instrument adapter assembly according to claim 2, characterized in that: It also includes a pipeline connector, which is installed on the side wall of the adapter, and the through hole of the pipeline connector is connected to the first guide hole.

4. The instrument adapter assembly according to claim 2, characterized in that: The other end of the transfer shaft extends out of the transfer seat and is provided with a limiting convex ring, and the limiting convex ring abuts against the transfer seat.

5. The instrument adapter assembly according to claim 2, characterized in that: Sealing grooves are respectively provided on both sides of the annular groove on the transfer shaft, and sealing ring components are nested in the sealing grooves.

6. A pressure calibration device, comprising a housing, a pressure-generating mechanism and a pressure output structure, wherein the pressure output structure is connected to the pressure-generating mechanism, and characterized in that: The pressure output structure comprises: A connecting pipe and an instrument adapter assembly as claimed in any one of claims 1 to 5, one end of the connecting pipe is connected to the pressure-generating mechanism, the other end of the connecting pipe is connected to the instrument adapter assembly, and the adapter seat is fixed to the housing; or n-way pipelines and n-1 instrument adapter assemblies as described in any one of claims 1 to 5, one end of the n-way pipelines is connected to the pressure-generating mechanism, the other n-1 ends of the n-way pipelines are respectively connected to n-1 instrument adapter assemblies, the adapter seat is fixed on the shell, and n is a positive integer greater than or equal to 3.

7. A pressure calibration device according to claim 6, characterized in that: A storage groove is provided on the back of the shell, and the structure of the storage groove matches one or n-1 instrument adapter assemblies. In the uncalibrated state, one or n-1 instrument adapter assemblies are stored in the storage groove, and in the calibrated state, one or n-1 instrument adapter assemblies are rotated out of the storage groove.

8. A pressure calibration device according to claim 7, characterized in that: The receiving and releasing groove is provided with openings on two sides of the shell. When the pressure output structure includes two instrument adapter assemblies, the two instrument adapter assemblies are symmetrically arranged.

9. A pressure calibration device according to claim 6, characterized in that: When the pressure output structure includes n-1 instrument adapter assemblies, one instrument adapter assembly is used to connect the standard meter, and the other n-2 instrument adapter assemblies are used to connect the meter to be tested. The meter to be tested is calibrated by comparing the indication difference between the standard meter and the meter to be tested.

10. A pressure calibration device according to claim 6, characterized in that: The pressure calibration equipment also includes a standard pressure module and a human-computer interaction unit. The standard pressure module is used to sense the standard pressure value of the pressure output structure in real time and display it through the human-computer interaction unit. One or n-1 instrument adapter assemblies are respectively used to connect the meter to be tested. The calibration of the meter to be tested is achieved by comparing the difference in indication between the standard pressure module and the meter to be tested.

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