CN203191153U - Differential pressure transmitter calibrator - Google Patents

Differential pressure transmitter calibrator Download PDF

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Publication number
CN203191153U
CN203191153U CN 201320217926 CN201320217926U CN203191153U CN 203191153 U CN203191153 U CN 203191153U CN 201320217926 CN201320217926 CN 201320217926 CN 201320217926 U CN201320217926 U CN 201320217926U CN 203191153 U CN203191153 U CN 203191153U
Authority
CN
China
Prior art keywords
pressure transmitter
differential pressure
solenoid valve
electromagnetism
hydraulic pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320217926
Other languages
Chinese (zh)
Inventor
郭凯志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing College of Chemical Technology
Original Assignee
Nanjing College of Chemical Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing College of Chemical Technology filed Critical Nanjing College of Chemical Technology
Priority to CN 201320217926 priority Critical patent/CN203191153U/en
Application granted granted Critical
Publication of CN203191153U publication Critical patent/CN203191153U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a differential pressure transmitter calibrator belonging to the field of automatic instrument calibration devices. The calibrator is characterized in comprising a box body. A standard differential pressure transmitter connector and a connector of a differential pressure transmitter to be calibrated are arranged on the box body. An air compressor, a pneumatic hydraulic pump, a check valve, a solenoid three-valve set, a solenoid valve D, an oil tank, a standard pressure transmitter, and an intelligent controller are arranged in the box body. According to the utility model, pneumatic hydraulic pump pressurizing and pulse pressure releasing methods are adopted, such that pressurizing and pressure releasing are smoother and more accurate. The calibrator can fully automatically calibrate the differential pressure transmitter, and has the characteristics of fast and stable pressure control and accurate pressurizing.

Description

The differential pressure transmitter tester
Technical field
The utility model relates to a kind of differential pressure transmitter tester, belongs to instrument and meter for automation tester field.
Background technology
Differential pressure transmitter is widely used in the measurement of flow and liquid level, now manual adjustments static pressure and differential pressure signal is mostly used in the differential pressure transmitter verification, troublesome poeration not only, and location difficulty also easily produces artificial reading error.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of differential pressure transmitter tester that can automatically accurately locate static pressure and differential pressure checkpoint.
For achieving the above object, the utility model is realized by following technical scheme: the differential pressure transmitter tester, it is characterized in that, comprise casing, the standard deviation pressure transmitter is installed on described casing and by school differential pressure transmitter joint, at described box house air compressor machine, pneumatically powered hydraulic pump, reverse checkvalve, electromagnetism three valve groups, solenoid valve D, fuel tank, normal pressure transmitter, intelligent controller is installed.
Further, described electromagnetism three valve groups comprise solenoid valve A, solenoid valve B, solenoid valve C.
Further, described air compressor machine is connected with pneumatically powered hydraulic pump, pneumatically powered hydraulic pump is connected with fuel tank, pneumatically powered hydraulic pump also is connected with reverse checkvalve one end, the reverse checkvalve other end divides two-way to be connected with electromagnetism three valve groups, be connected to the normal pressure transmitter between reverse checkvalve and the electromagnetism three valve groups, electromagnetism three valve groups and standard deviation pressure transmitter be connected by school differential pressure transmitter joint, be connected to solenoid valve D between electromagnetism three valve groups and the standard deviation pressure transmitter.Intelligent controller control solenoid valve A, solenoid valve B, solenoid valve C opened when verification began, start air compressor machine and drive the pneumatically powered hydraulic pump pressurization, measure static pressure by the normal pressure transmitter, intelligent controller control solenoid valve A, solenoid valve B, solenoid valve C close when arriving the static pressure checkpoint, carry out the static pressure verification this moment, then, adopt intelligent controller control solenoid valve D pulse fine setting pressure release to obtain differential pressure value, carry out the differential pressure verification.
The beneficial effects of the utility model are, can automatically carry out verification to differential pressure transmitter, can automatically accurately locate static pressure and differential pressure checkpoint, can carry out positive revesal verification by a plurality of checkpoints of automatic setting, be limited to 4MPa on the static pressure pressure checking, because the method for the pressurization of employing pneumatically powered hydraulic pump and pulse pressure release makes pressurization and pressure release steady more and accurate.
Description of drawings
Fig. 1 is the system diagram of the utility model differential pressure transmitter tester;
Fig. 2 is the electromagnetism three valve group synoptic diagram of the utility model differential pressure transmitter tester.
The mark implication is as follows in the accompanying drawing:
1, air compressor machine 2, pneumatically powered hydraulic pump 3, reverse checkvalve 4, electromagnetism three valve groups
5, standard deviation pressure transmitter 6, by school differential pressure transmitter joint 7, solenoid valve D 8, fuel tank
9, normal pressure transmitter 10, intelligent controller 11, casing 12, solenoid valve A
13, solenoid valve B 14, solenoid valve C.
Embodiment
The utility model is described in further detail below in conjunction with diagram and specific embodiment.
With reference to Fig. 1, Fig. 2, the utility model differential pressure transmitter tester, comprise casing 11, standard deviation pressure transmitter 5 is installed on casing 11 and by school differential pressure transmitter joint 6, air compressor machine 1, pneumatically powered hydraulic pump 2, reverse checkvalve 3, electromagnetism three valve groups 4, solenoid valve D7, fuel tank 8, normal pressure transmitter 9, intelligent controller 10 is installed in casing inside.
Further, described electromagnetism three valve groups 4 comprise solenoid valve A12, solenoid valve B13, solenoid valve C14.
Further, described air compressor machine 1 is connected with pneumatically powered hydraulic pump 2, pneumatically powered hydraulic pump 2 is connected with fuel tank 8, pneumatically powered hydraulic pump 2 also is connected with reverse checkvalve 3 one ends, reverse checkvalve 3 other ends divide two-way to be connected with electromagnetism three valve groups 4, be connected to normal pressure transmitter 9 between reverse checkvalve 3 and the electromagnetism three valve groups 4, electromagnetism three valve groups 4 and standard deviation pressure transmitter 5 be connected by school differential pressure transmitter joint 6, be connected to solenoid valve D7 between electromagnetism three valve groups 4 and the standard deviation pressure transmitter 5.Intelligent controller 10 control solenoid valve A12, solenoid valve B13, solenoid valve C14 opened when verification began, start air compressor machine 1 and drive pneumatically powered hydraulic pump 2 pressurizations, measure static pressure by normal pressure transmitter 9, intelligent controller 10 control solenoid valve A12, solenoid valve B13, solenoid valve C14 close when arriving the static pressure checkpoint, carry out the static pressure verification this moment, then, adopt intelligent controller 10 control solenoid valve D7 pulse fine setting pressure releases to obtain differential pressure value, carry out the differential pressure verification.
By reference to the accompanying drawings utility model is carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the non-substantial improvement of having adopted method design of the present utility model and technical scheme to carry out; perhaps without improving method design of the present utility model and technical scheme are applied directly to other occasions, all within protection domain of the present utility model.

Claims (1)

1. differential pressure transmitter tester, it is characterized in that, comprise casing (11), standard deviation pressure transmitter (5) is installed and by school differential pressure transmitter joint (6) on described casing (11), air compressor machine (1), pneumatically powered hydraulic pump (2), reverse checkvalve (3), electromagnetism three valve groups (4), solenoid valve D (7), fuel tank (8), normal pressure transmitter (9), intelligent controller (10) are installed in described casing (11) inside, and described electromagnetism three valve groups (4) comprise solenoid valve A (12), solenoid valve B (13), solenoid valve C (14);
Comprise above-mentioned parts, described air compressor machine (1) is connected with pneumatically powered hydraulic pump (2), pneumatically powered hydraulic pump (2) is connected with fuel tank (8), pneumatically powered hydraulic pump (2) also is connected with reverse checkvalve (3) one ends, reverse checkvalve (3) other end divides two-way to be connected with electromagnetism three valve groups (4), be connected to normal pressure transmitter (9) between reverse checkvalve (3) and the electromagnetism three valve groups (4), electromagnetism three valve groups (4) and standard deviation pressure transmitter (5) be connected by school differential pressure transmitter joint (6), be connected to solenoid valve D (7) between electromagnetism three valve groups (4) and the standard deviation pressure transmitter (5).
CN 201320217926 2013-04-26 2013-04-26 Differential pressure transmitter calibrator Expired - Fee Related CN203191153U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320217926 CN203191153U (en) 2013-04-26 2013-04-26 Differential pressure transmitter calibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320217926 CN203191153U (en) 2013-04-26 2013-04-26 Differential pressure transmitter calibrator

Publications (1)

Publication Number Publication Date
CN203191153U true CN203191153U (en) 2013-09-11

Family

ID=49108006

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320217926 Expired - Fee Related CN203191153U (en) 2013-04-26 2013-04-26 Differential pressure transmitter calibrator

Country Status (1)

Country Link
CN (1) CN203191153U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234696A (en) * 2013-04-26 2013-08-07 南京化工职业技术学院 Differential pressure transmitter checking instrument
CN107741297A (en) * 2017-11-21 2018-02-27 王强 Differential pressure transmitter verifies detecting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234696A (en) * 2013-04-26 2013-08-07 南京化工职业技术学院 Differential pressure transmitter checking instrument
CN107741297A (en) * 2017-11-21 2018-02-27 王强 Differential pressure transmitter verifies detecting system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130911

Termination date: 20140426