Non-backflow type pressure instrument calibrator
By designing a non-backflow pressure instrument calibrator and utilizing a combination of check valves and valves, the problem of calibrator contamination caused by media backflow was solved, achieving cleanliness and long service life of the calibrator and improving calibration accuracy.
Patent Information
- Application Number
- CN202422673355.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-01
AI Technical Summary
Traditional pressure instrument calibrators suffer from media backflow problems, which cause impurities to accumulate inside the calibrator, affecting calibration accuracy and shortening its service life.
A non-backflow pressure instrument calibrator was designed, which adopts a combination structure of check valve and valve to prevent medium backflow, and the calibrator bracket with split connection is easy to clean. It includes components such as medium container, pressure pump, check valve, pressurization device and calibrator end.
It effectively prevents media backflow, keeps the calibrator clean, extends its service life, and facilitates separate cleaning of the calibrator bracket, thereby improving calibrator accuracy.
Smart Images
Figure CN223597071U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of detection instrument, especially a non backflow type pressure instrument calibrator. BACKGROUND
[0002] In the verification process of pressure instrument, the traditional calibrator often has the problem of medium backflow, which not only may cause the accumulation of impurities, iron filings and other foreign matters in the calibrator, affecting the verification precision, but also may accelerate the wear of the calibrator, shortening its service life. Therefore, it is particularly important to develop a new type of calibrator which can effectively prevent medium backflow and keep the inside of the calibrator clean. SUMMARY
[0003] The utility model aims at overcoming the deficiency of prior art, provides a non backflow type pressure instrument calibrator to solve the technical problem proposed in the background art.
[0004] The utility model aims at overcoming the deficiency of prior art, provides a non backflow type pressure instrument calibrator to solve the technical problem proposed in the background art.
[0005] A non backflow type pressure instrument calibrator, comprising a medium container storing a verification medium, the medium container is connected with a pressure pump through a liquid outlet pipe, a first check valve is connected on the liquid outlet pipe, the liquid outlet end of the pressure pump is connected with an output end head through a liquid sending pipe, a second check valve and a third check valve are connected on the liquid sending pipe in sequence, the liquid outlet end of the second check valve is provided with a booster branch pipe connected on the liquid sending pipe, a booster device is connected on the booster branch pipe, the liquid inlet end of the third check valve is provided with a fourth valve, the liquid inlet end of the fourth valve is provided with a liquid return pipe connected on the liquid sending pipe and communicated with the medium container, a first valve is arranged on the liquid return pipe, a verification support is detachably connected on the output end head, the verification support is respectively provided with a first verification end head and a second verification end head communicated with the output end head.
[0006] In the above utility model content, further, the verification support includes a threaded pipe and a verification branch pipe communicated with the threaded pipe, the first verification end head and the second verification end head are connected on the end portions of the two ends of the verification branch pipe in sequence respectively, and the threaded pipe is connected with the output end head in a threaded cooperation mode.
[0007] In the above utility model content, further, the output end head is connected with a waste liquid tank through a waste liquid pipe, and a second valve is arranged on the waste liquid pipe.
[0008] In the above utility model content, further, the waste liquid tank is connected with a liquid discharge pipe, and a third valve is connected on the liquid discharge pipe.
[0009] Further, the first and second checking end heads are screw end heads, and the first and second checking end heads are connected with the standard meter and the instrument to be checked by screw connection respectively.
[0010] The utility model has the advantages of effectively preventing medium backflow, keeping the checker clean and prolonging the service life.
[0011] The utility model can effectively prevent medium backflow, keep the checker clean and prolong the service life, and the output end head and the checking support are connected in a split type, so that the checking support can be cleaned separately when the inside of the checking support is seriously polluted. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 The utility model discloses a structure diagram.
[0013] In the drawing, 1 is a medium container, 2 is a liquid outlet pipe, 3 is a pressure pump, 4 is a first one-way valve, 5 is a liquid feeding pipe, 6 is an output end head, 7 is a second one-way valve, 8 is a third one-way valve, 9 is a pressure boosting branch pipe, 10 is a pressure boosting device, 11 is a liquid return pipe, 12 is a first valve, 13 is a checking support, 14 is a waste liquid pipe, 15 is a waste liquid tank, 16 is a second valve, 17 is a liquid discharging pipe, 18 is a third valve, 19 is a fourth valve, 131 is a first checking end head, 132 is a second checking end head, 133 is a threaded pipe, and 134 is a checking branch pipe. DETAILED DESCRIPTION
[0014] The embodiments of the utility model will be described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied through different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the utility model. It should be noted that the following examples and features in the examples can be combined with each other without conflict.
[0015] It should be noted that the diagrams provided in the following examples only illustrate the basic concept of the utility model in a schematic manner, and only the components related to the utility model are shown in the diagrams, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component can be changed arbitrarily when actually implemented, and the component layout pattern can also be more complex.
[0016] Embodiment:
[0017] A non-backflow type pressure instrument checker, referring to the attached Figure 1As shown, including the storage of the verification medium medium container 1, the medium container 1 is connected with the pressure pump 3 through the liquid outlet pipe 2, the first one-way valve 4 is connected on the liquid outlet pipe 2, the liquid outlet end of the pressure pump 3 is connected with the output end head 6 through the liquid delivery pipe 5, the second one-way valve 7 and the third one-way valve 8 are sequentially connected on the liquid delivery pipe 5, the liquid outlet end of the second one-way valve 7 is provided with a booster branch pipe 9 connected on the liquid delivery pipe 5, the booster branch pipe 9 is connected with the booster device 10, the liquid inlet end of the third one-way valve 8 is provided with the fourth valve 19, the liquid inlet end of the fourth valve 19 is provided with a return pipe 11 connected on the liquid delivery pipe 5 and communicated with the medium container 1, the first valve 12 is arranged on the return pipe 11, the output end head 6 is detachably connected with the verification support 13, the verification support 13 is respectively provided with the first verification end head 131 and the second verification end head 132 communicated with the output end head 6.
[0018] Specifically, the verification support 13 includes a threaded pipe 133 and a verification branch pipe 134 communicated with the threaded pipe 133, the first verification end head 131 and the second verification end head 132 are sequentially connected on the end portions of the two ends of the verification branch pipe 134 respectively, and the threaded pipe 133 is connected with the output end head 6 in a threaded cooperation mode. It is convenient to clean separately when pollution occurs in the verification support 13. Secondly, the first verification end head 131 and the second verification end head 132 are both threaded end heads, and the first verification end head 131 and the second verification end head 132 are both connected with the standard meter and the instrument to be verified in a threaded connection mode respectively.
[0019] The utility model discloses specifically to use process, and the standard meter and the instrument to be verified are connected and are sequentially threaded and installed on the first verification end head 131 and the second verification end head 132 respectively. Again, the verification support 13 is threaded and installed on the output end head 6. When starting verification, the medium in the medium container 1 enters the liquid delivery pipe 5 under the action of the pressure pump 3 through the liquid outlet pipe 2 and the first one-way valve 4, and the medium enters the output end head 6 through the second one-way valve 7 and the third one-way valve 8 on the liquid delivery pipe 5, during which the booster device 10 carries out secondary pressure boosting to the medium. The medium in the output end head 6 is finally sent into the standard meter and the instrument to be verified through the threaded pipe 133 and the verification branch pipe 134. The instrument to be verified is verified through the pressure reading of the standard meter during the verification process. After verification is completed, the fourth valve 19 is closed, to ensure that the contaminated working medium cannot flow back to the pressure pipeline and cause system pollution. The first valve 12 is opened, and the working medium not participating in the verification end verification can flow back to the medium container 1 through the return pipe 11.
[0020] In the novel type, the output end 6 is connected with a waste liquid tank 15 through a waste liquid pipe 14, and a second valve 16 is arranged on the waste liquid pipe 14. The waste liquid tank 15 is connected with a liquid discharge pipe 17, and a third valve 18 is arranged on the liquid discharge pipe 17. After the inspection is completed, the second valve 16 is opened, the pressure of the output end 6 is released, the waste liquid in the calibration support 13 and the output end 6 flows into the waste liquid tank 15 through the waste liquid pipe 14, and finally the third valve 18 is opened regularly to clean the waste liquid.
[0021] The above-mentioned embodiment only expresses the specific implementation manner of the present application, and the description is relatively specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that, for the ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.
Claims
1. A non-reflow pressure gauge calibrator, characterized by, The application relates to a verification device for a pressure gauge, which comprises a medium container containing a verification medium, a pressure pump connected to the medium container through a liquid outlet pipe, a first one-way valve connected to the liquid outlet pipe, an output end head connected to the liquid outlet end of the pressure pump through a liquid delivery pipe, a second one-way valve and a third one-way valve connected to the liquid delivery pipe in sequence, a pressurizing branch pipe connected to the liquid delivery pipe at the liquid outlet end of the second one-way valve, a pressurizing device connected to the pressurizing branch pipe, a fourth valve connected to the liquid inlet end of the third one-way valve, a liquid return pipe connected to the liquid delivery pipe at the liquid inlet end of the fourth valve and communicating with the medium container, a first valve connected to the liquid return pipe, a verification support detachably connected to the output end head, and a first verification end head and a second verification end head respectively arranged on the verification support and communicating with the output end head.
2. A no-flow pressure gauge tester according to claim 1, wherein, The verification support comprises a threaded pipe and a verification branch pipe communicating with the threaded pipe, the first verification end head and the second verification end head are respectively connected to the end portions of the two ends of the verification branch pipe in sequence, and the threaded pipe is connected to the output end head in a threaded fit mode.
3. A no-flow pressure gauge tester according to claim 1, wherein, The output end head is connected to a waste liquid tank through a waste liquid pipe, and a second valve is arranged on the waste liquid pipe.
4. A no-flow pressure gauge tester according to claim 3, wherein, The waste liquid tank is connected to a liquid discharge pipe, and a third valve is arranged on the liquid discharge pipe.
5. A no-flow pressure gauge tester according to claim 2, wherein, The first verification end head and the second verification end head are both threaded end heads, and the first verification end head and the second verification end head are respectively connected to a standard meter and a meter to be verified in a threaded connection mode.