CN213041437U - Pressure transmitter is piecing devices for calibration - Google Patents

Abstract

The utility model discloses a connector device for calibrating a pressure transmitter, which comprises a main pipe and a connector, wherein a plurality of branch pipes communicated with the main pipe are fixed at the upper end of the main pipe at intervals, a first plug cover is respectively installed on each branch pipe, an insertion pipe communicated with the main pipe is fixed at the lower end of the main pipe, the connector comprises a connector upper part connected with the main pipe and a connector lower part connected with a standard pressure source, the connector lower part is fixed at the lower end of the connector upper part, a cavity is arranged in the connector upper part, the insertion pipe is inserted and arranged in the cavity and is hermetically connected with the cavity, and a channel communicated with the cavity is arranged in the connector lower part; the advantage is a plurality of pressure transmitter of adaptation, has improved calibration efficiency.

Description

Pressure transmitter is piecing devices for calibration

Technical Field

The utility model relates to a piecing devices especially involves a pressure transmitter is piecing devices for calibration.

Background

The pressure transmitter is a pressure sensor which takes output as a standard signal, and is an instrument which receives a pressure variable and converts the pressure variable into a standard output signal in proportion. It can convert the physical pressure parameters sensed by the load cell sensor into standard electric signals for the secondary instruments such as indicating alarm, recorder and regulator to measure, indicate and regulate the process. The pressure transmitter is the most common sensor in industrial practice, is widely applied to various industrial automatic control environments, and relates to various industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, military industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like.

Before leaving the factory, the pressure transmitter is generally calibrated and written in data by a manufacturer at one time, and is put into field use after debugging and calibration are completed. However, due to the influence of the field environment and time, the output of the transmitter has errors with the actual measurement signal, the accuracy of field monitoring is influenced, and the transmitter needs to be regularly calibrated according to the related national calibration regulations in order to ensure the accuracy of the output value.

Traditional pressure transmitter calibrating device includes a standard pressure source, and it is connected with pressure transmitter through the joint, and standard pressure source is to pressure transmitter gas transmission, if the vertical of both showings is in error range, then judges that this pressure transmitter is qualified, otherwise then judges that this pressure transmitter has a problem, but above-mentioned device exists following problem: 1. because the types and sizes of the pressure transmitters in the market are various, the connector of the traditional pressure transmitter calibration device can only be matched with the pressure transmitter with a limited size for calibration, the application range is small, in order to be matched with different pressure transmitters, the connector is usually required to be detached and replaced by a new connector, the working efficiency is low, and the calibration device can be damaged after long-time replacement; 2. the traditional pressure transmitter calibration device can only detect and calibrate one pressure transmitter, and the calibration efficiency needs to be improved.

Disclosure of Invention

In order to solve the not enough of existence among the above-mentioned prior art, the utility model provides a pressure transmitter is piecing devices for calibration, it can a plurality of pressure transmitters of adaptation, has improved calibration verification efficiency.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a pressure transmitter is piecing devices for calibration, is including being responsible for and connector piece, the upper end interval of being responsible for be fixed with many with the lateral pipe that is linked together of being responsible for, every the lateral pipe on install first gag respectively, the lower extreme of being responsible for be fixed with the intubate that is linked together of being responsible for, connector piece including be used for with the person in charge connect upper portion and be used for the joint lower part of being connected with standard pressure source, the joint lower part fix the lower extreme that connects upper portion, joint upper portion in have a cavity, the intubate insert the setting and be in the cavity, and with cavity sealing connection, the joint lower part in be provided with one with the passageway that the cavity is linked together.

The outer wall of the insertion pipe is provided with a first external thread, the inner wall of the cavity is provided with a first internal thread, and the insertion pipe is in screwed connection with the cavity through the matching of the first external thread and the first internal thread. In this structure, first external screw thread and the cooperation of first internal thread make the leakproofness better between intubate and the cavity on the one hand, and on the other hand dismouting is comparatively convenient, can change the joint spare at any time.

The bottom of the cavity is fixedly provided with a sealing gasket, and the inner wall of the sealing gasket is tightly contacted with the outer wall of the insertion tube. Thereby further enhancing the seal between the cannula and the cavity.

And the outer wall of the upper part of the joint is provided with a shaft sleeve. In this configuration, the provision of the sleeve facilitates the application of force to enable the entire joint element to be rotated.

The shaft sleeves are arranged in a regular hexagon shape. In the structure, the shaft sleeve is arranged to be in a regular hexagon, so that the spanner can be screwed up or unscrewed conveniently.

The outer side wall of the lower part of the joint is provided with a second external thread, an extension column is coaxially fixed at the lower end of the lower part of the joint, and a through hole communicated with the channel is formed in the extension column. This structure gathers, and the second external screw thread that sets up on the joint lower part lateral wall is convenient for carry out the spiro union with the mark pressure source to make things convenient for the dismouting, still strengthened the leakproofness, the setting of extension post is then for matching standard pressure source.

The lower surface of the lower part of the joint is provided with an annular groove, and the annular groove and the through hole are coaxially arranged. In the structure, the annular groove is convenient to embed into the sealing ring, so that the sealing property between the lower part of the joint and a standard pressure source is enhanced.

Each branch pipe is provided with a threaded hole for the first plug cover to be screwed, and the threaded holes of each branch pipe are different in size. In this structure, the screw hole of not uniform size is convenient for be connected with the pressure transmitter of different specifications, and the practicality is higher.

The two ends of the main pipe are respectively provided with an auxiliary hole, and a second plug cover is screwed at each auxiliary hole. In this structure, the setting of auxiliary hole can make a plurality of pressure transmitter of disposable connection of this device, and calibration efficiency obtains improving, when not using, adopts the second gag to seal the auxiliary hole, when needing to connect pressure transmitter, then opens the second gag, with pressure transmitter be connected to in the auxiliary hole can.

Compared with the prior art, the utility model has the advantages of: the arrangement of the plurality of branch pipes is used for connecting the plurality of pressure transmitters, so that the verification efficiency is greatly improved; the first plug cover is arranged for sealing the branch pipe so as to prevent the condition of air leakage; the joint piece is arranged to play a role in communicating the main pipe with the standard pressure source and is divided into a joint upper part and a joint lower part, a cavity in the joint upper part is used for inserting the intubation tube, and the joint lower part is used for being connected with the standard pressure source, so that the whole gas path is smooth; the utility model discloses can a plurality of pressure transmitters of adaptation, improve calibration verification efficiency.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view of the middle joint member of the present invention;

fig. 3 is a schematic perspective view of the middle joint member of the present invention;

fig. 4 is a schematic perspective view of the exploded structure of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples, but the present invention is not limited thereto.

The first embodiment is as follows: as shown in the figure, the joint device for calibrating the pressure transmitter comprises a main pipe 1 and a joint part 2, a plurality of branch pipes 4 communicated with the main pipe 1 are fixed at the upper end of the main pipe 1 at intervals, a first plug cover 41 is respectively installed on each branch pipe 4, an insertion pipe 11 communicated with the main pipe 1 is fixed at the lower end of the main pipe 1, the joint part 2 comprises a joint upper part 21 connected with the main pipe 1 and a joint lower part 22 connected with a standard pressure source, the joint lower part 22 is fixed at the lower end of the joint upper part 21, a cavity 23 is formed in the joint upper part 21, the insertion pipe 11 is inserted into the cavity 23 and is hermetically connected with the cavity 23, and a channel 24 communicated with the cavity 23 is formed in the joint lower part 22.

Example two: as shown in the figures, the other structure is the same as the first embodiment, except that the outer wall of the insertion tube 11 is provided with a first external thread 12, the inner wall of the cavity 23 is provided with a first internal thread 27, and the insertion tube 11 is screwed in the cavity 23 through the cooperation of the first external thread 12 and the first internal thread 27. In this structure, the cooperation of first external screw thread 12 and first internal screw thread 27 makes the leakproofness better between intubate 11 and the cavity 23 on the one hand, and on the other hand dismouting is comparatively convenient, can change joint spare 2 at any time.

A sealing gasket 25 is fixed at the bottom of the cavity 23, and the inner wall of the sealing gasket 25 is tightly contacted with the outer wall of the insertion tube 11. Thereby further enhancing the seal between the cannula 11 and the cavity 23.

A bushing 26 is provided on the outer wall of the joint upper portion 21. In this configuration, the sleeve 26 is arranged to apply a force so as to rotate the entire socket 2.

The sleeve 26 is arranged in a regular hexagon. In this structure, the shaft sleeve 26 is arranged in a regular hexagon, which is beneficial to screwing or unscrewing a wrench.

Example three: as shown in the drawings, the other structure is the same as the embodiment, except that a second external thread 28 is provided on the outer side wall of the joint lower portion 22, an extension column 29 is coaxially fixed to the lower end of the joint lower portion 22, and a through hole 30 communicating with the passage 24 is provided on the extension column 29. This structure summarizes, and the second external screw thread 28 that sets up on the lateral wall of joint lower part 22 is convenient for carry out the spiro union with the mark pressure source to make things convenient for the dismouting, still strengthened the leakproofness, the setting of extending post 29 is then for matching standard pressure source.

The lower surface of the joint lower part 22 is provided with an annular groove 31, and the annular groove 31 is coaxially arranged with the through hole 30. In this arrangement, the provision of the annular groove 31 facilitates the insertion of a sealing ring to enhance the seal between the lower fitting portion 22 and a standard pressure source.

Threaded holes 42 for screwing the first plug covers 41 are formed in each branch pipe 4 respectively, and the threaded holes 42 of each branch pipe 4 are different in size. In this structure, the screw hole 42 with different sizes is convenient for be connected with the pressure transmitter of different specifications, and the practicality is higher.

Two ends of the main pipe 1 are respectively provided with an auxiliary hole 13, and a second plug cover 14 is screwed at each auxiliary hole 13. In this structure, the setting of auxiliary hole 13 can make a plurality of pressure transmitter of this device disposable connection, and calibration efficiency obtains improving, when not using, adopts second gag 14 to seal auxiliary hole 13, when needing to connect pressure transmitter, then opens second gag 14, with pressure transmitter be connected to auxiliary hole 13 in can.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and the present invention can also be modified in materials and structures, or replaced by technical equivalents. Therefore, all structural equivalents which may be made by applying the present invention to the specification and drawings, or by applying them directly or indirectly to other related technical fields, are intended to be encompassed by the present invention.

Claims (9)

1. The utility model provides a piecing devices is used in pressure transmitter calibration which characterized in that: including being responsible for and connector spare, the upper end interval of being responsible for be fixed with many with the lateral pipe that is linked together of being responsible for, every the lateral pipe on install first gag respectively, the lower extreme of being responsible for be fixed with the intubate that is responsible for and is linked together, connector spare including be used for with be responsible for the joint upper portion of connecting and be used for the joint lower part of being connected with standard pressure source, the joint lower part fix the lower extreme on joint upper portion, joint upper portion in have a cavity, the intubate insert the setting and be in the cavity, and with cavity sealing connection, the joint lower part in be provided with one with the passageway that the cavity is linked together.

2. The adapter device for calibration of a pressure transmitter of claim 1, wherein: the outer wall of the insertion pipe is provided with a first external thread, the inner wall of the cavity is provided with a first internal thread, and the insertion pipe is in screwed connection with the cavity through the matching of the first external thread and the first internal thread.

3. The adapter device for calibration of a pressure transmitter of claim 2, wherein: the bottom of the cavity is fixedly provided with a sealing gasket, and the inner wall of the sealing gasket is tightly contacted with the outer wall of the insertion tube.

4. The adapter device for calibration of a pressure transmitter of claim 1, wherein: and the outer wall of the upper part of the joint is provided with a shaft sleeve.

5. The adapter device for pressure transmitter calibration of claim 4, wherein: the shaft sleeves are arranged in a regular hexagon shape.

6. The adapter device for calibration of a pressure transmitter of claim 1, wherein: the outer side wall of the lower part of the joint is provided with a second external thread, an extension column is coaxially fixed at the lower end of the lower part of the joint, and a through hole communicated with the channel is formed in the extension column.

7. The adapter device for calibration of a pressure transmitter of claim 6, wherein: the lower surface of the lower part of the joint is provided with an annular groove, and the annular groove and the through hole are coaxially arranged.

8. The adapter device for calibration of a pressure transmitter of claim 1, wherein: each branch pipe is provided with a threaded hole for the first plug cover to be screwed, and the threaded holes of each branch pipe are different in size.

9. The adapter device for calibration of a pressure transmitter of claim 1, wherein: the two ends of the main pipe are respectively provided with an auxiliary hole, and a second plug cover is screwed at each auxiliary hole.

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