A special quick connector for environmental air fluoride sampler traceability

Abstract

The application discloses a special quick connector for environmental air fluoride sampler traceability, which comprises a circular cavity, a lower circular pipe connected with the lower part of the circular cavity, an upper circular pipe connected with the upper part of the circular cavity and a support frame connected with the lower circular pipe, a sealing ring and a magnet ring for pressing the sealing ring are sleeved on the lower circular pipe, a flowmeter front pressure calibration interface, a steady flow orifice insertion port and a first sealing element for sealing the steady flow orifice insertion port are further arranged on the lower circular pipe; a filter membrane clamp insertion port and a second sealing element for sealing the filter membrane clamp insertion port are arranged on the circular cavity; a load pressure test interface and a valve are arranged on the upper circular pipe. The application meets the sampling connection requirement of simultaneously performing the flow value error, flow repeatability, flow stability and flowmeter front pressure value error traceability detection on the environmental air fluoride sampler, simplifies the sampling connection operation and the connection structure, and can better guarantee the air tightness and improve the accuracy of the measurement parameters.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of calibration equipment, in particular to a connector used when calibrating an ambient air fluoride sampler. BACKGROUND

[0002] The ambient air fluoride sampler is used to collect solid and gaseous fluoride pollutants in the ambient air. According to the monitoring requirements of the ecological environment monitoring industry and the regulations of the authentication and accreditation in the measurement industry, the flow pressure and other measurement parameters of the ambient air fluoride sampler need to be traced to ensure the accuracy of the sampling volume of the sampler in the reference state. According to the tracing requirements, the ambient air fluoride sampler needs to be sent to a unit with calibration qualification at least once a year for certified tracing, in addition, the using unit of the sampler needs to frequently carry out internal self-calibration according to the use of the sampler.

[0003] When the measurement parameters of the ambient air fluoride sampler are traced or internally calibrated, the parameters to be measured include the flow indication error, the flow repeatability, the flow stability, the pressure indication error in front of the flow meter, and the temperature indication error in front of the flow meter, the ambient temperature indication error, the ambient atmospheric pressure indication error, the timing error, and the load capacity. The tracing of the temperature indication error in front of the flow meter, the ambient temperature indication error, the ambient atmospheric pressure indication error, and the timing error can be realized by directly comparing in the same environment without using any connecting mechanism. When the flow indication error, the flow repeatability, the flow stability, the pressure indication error in front of the flow meter, and the load capacity are measured, the connector, the connecting pipeline, and the connecting accessory need to be frequently replaced. This kind of way not only is complicated to operate, but also reduces the measurement efficiency. Moreover, the number of the connector, the connecting pipeline, and the connecting accessory is large, it is difficult to guarantee the air tightness, and it is easy to leak, which affects the indication errors of the flow and the pressure, and further affects the accuracy of the measurement parameters of the sampler. The inaccurate measurement will lead to the fact that the fluoride pollution in the air of the ecological environment monitoring industry cannot be effectively monitored and controlled, and the diseases in the disease control and medical industry cannot be effectively prevented and controlled. SUMMARY

[0004] Therefore, the present application aims to provide a special quick connector for the ambient air fluoride sampler to solve the technical problem that when the flow indication error, the flow repeatability, the flow stability, the pressure indication error in front of the flow meter, and the load capacity of the ambient air fluoride sampler are measured, the connector needs to be frequently replaced, the operation is complicated, the measurement efficiency is affected, the number of the connecting connector, the connecting pipeline, and the connecting accessory is large, and it is difficult to guarantee the air tightness, which further affects the accuracy of the measurement parameters of the sampler.

[0005] The application discloses a special quick connector for environmental air fluoride sampler traceability, which comprises a circular cavity, an upper circular pipe connected with the upper part of the circular cavity, a lower circular pipe connected with the lower part of the circular cavity and a support frame connected with the lower circular pipe.

[0006] A sealing ring and a magnet ring for pressing the sealing ring are arranged on the lower circular pipe, a flowmeter front pressure calibration interface, a steady flow orifice insertion port and a first sealing element for sealing the steady flow orifice insertion port are arranged on the lower circular pipe, the flowmeter front pressure calibration interface is located above the magnet ring, and the steady flow orifice insertion port is located above the flowmeter front pressure calibration interface.

[0007] A filter membrane clamp insertion port and a second sealing element for sealing the filter membrane clamp insertion port are arranged on the circular cavity.

[0008] A load pressure test interface and a valve are arranged on the upper circular pipe, and the valve is located above the load pressure test interface.

[0009] Further, the special quick connector for environmental air fluoride sampler traceability further comprises filter membrane clamps for sampling under the conditions of air flow of 50 L / min and 16.7 L / min.

[0010] Further, the special quick connector for environmental air fluoride sampler traceability further comprises a steady flow orifice for sampling under the condition of air flow of 16.7 L / min.

[0011] Further, the support frame comprises a ring body in rotation cooperation with the lower circular pipe, a support rod hingedly connected to the upper end of the ring body and a suction disc hingedly connected to the lower end of the support rod.

[0012] Further, the suction disc is a negative pressure rubber suction disc or a magnetic suction disc.

[0013] The application has the following beneficial effects:

[0014] The special quick connector for environmental air fluoride sampler traceability can meet the sampling connection requirements of traceability detection of the environmental air fluoride sampler under the conditions of air flow of 50 L / min, 16.7 L / min and 50 L / min, and can meet the pipeline connection requirements of load capacity project detection of the environmental air fluoride sampler. The special quick connector for environmental air fluoride sampler traceability makes the sampling connection operation simpler, is favorable for improving the measurement work efficiency, and can better guarantee the air tightness and improve the accuracy of measurement parameters due to the great reduction of the number of connection connectors, connection pipelines and connection accessories. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Structure diagram of the special quick connector for environmental air fluoride sampler traceability;

[0016] Figure 2 Connection diagram of the second sealing member and the circular cavity. DETAILED DESCRIPTION

[0017] The application will be further described in conjunction with the drawings and examples.

[0018] The special quick connector for environmental air fluoride sampler traceability in the embodiment comprises a circular cavity 1, an upper circular tube 2 connected with the upper part of the circular cavity, a lower circular tube 3 connected with the lower part of the circular cavity, and a support frame 4 connected with the lower circular tube.

[0019] A sealing ring 5 and a magnet ring 6 for pressing the sealing ring are sleeved on the lower circular tube, and a flowmeter front pressure calibration interface 7, a steady flow orifice insertion opening 8, and a first sealing member 9 for sealing the steady flow orifice insertion opening are arranged on the lower circular tube, the flowmeter front pressure calibration interface is above the magnet ring, and the steady flow orifice insertion opening is above the flowmeter front pressure calibration interface.

[0020] A filter membrane clamp insertion opening 10 and a second sealing member 11 for sealing the filter membrane clamp insertion opening are arranged on the circular cavity.

[0021] The first sealing member 9 and the second sealing member 11 can be circular arc-shaped silica gel sealing members, and the material and shape of the first sealing member 9 and the second sealing member 11 can be selected according to requirements.

[0022] A load pressure test interface 12 and a valve 13 are arranged on the upper circular tube, the valve 13 can be a ball valve, and the specific form of the valve can be selected according to requirements; the valve is above the load pressure test interface.

[0023] As an improvement of the above embodiment, the special quick connector for environmental air fluoride sampler traceability further comprises a filter membrane clamp 15 for sampling when the flow is 50 L / min and 16.7 L / min.

[0024] As an improvement of the above embodiment, the special quick connector for environmental air fluoride sampler traceability further comprises a steady flow orifice 14 for sampling when the flow is 16.7 L / min.

[0025] When the environmental air fluorine sampler is traced, the lower pipe 3 of the special quick connector for tracing of the environmental air fluorine sampler in the above embodiment is directly inserted into the air inlet of the fluorine sampler, and the special quick connector is fixed on the fluorine sampler through the support frame 4, and then the sealing ring 5 is tightly fixed on the air inlet of the fluorine sampler through the magnet ring 6, so as to ensure the air tightness of the air inlet part.

[0026] When the flow value error, flow repeatability, flow stability, and flow meter front pressure value error of the 50L / min flow point are traced, the valve 13 is opened, the flow meter front pressure calibration interface 7 and the load pressure test interface 12 are respectively connected with the standard digital pressure gauge, two clean filter membranes 16 are placed in the filter membrane clamp insertion port 10, the filter membrane clamp insertion port 10 is sealed by the second sealing element 11, the steady flow hole insertion port 8 is sealed by the first sealing element 9, the valve 13 is connected with the flow calibrator, and the fluorine sampler is opened at this time, so that the flow value error, flow repeatability, flow stability, and flow meter front pressure value error of the 50L / min flow point can be calibrated at the same time. In the specific implementation, the first sealing element 9 and the second sealing element 11 can be fixed by the clamp 17, and of course in different embodiments, the first sealing element 9 and the second sealing element 11 can also be fixed by other ways such as rope binding.

[0027] When the flow value error, flow repeatability, flow stability, and flow meter front pressure value error of the 16.7L / min flow point are traced, the valve 13 is opened, the flow meter front pressure calibration interface 7 and the load pressure test interface 12 are respectively connected with the standard digital pressure gauge, the steady flow hole 14 is inserted into the steady flow hole insertion port 8, and then the steady flow hole insertion port 8 is sealed by the first sealing element 9. Since the small flow is not easy to stabilize, the insertion of the steady flow hole 14 is beneficial to improve the stability of the flow. Then two clean filter membranes 16 are placed in the filter membrane clamp insertion port 10, and the filter membrane clamp insertion port 10 is sealed by the second sealing element 11. The valve 13 is connected with the flow calibrator, and the fluorine sampler is opened at this time, so that the flow value error, flow repeatability, flow stability, and flow meter front pressure value error of the 16.7L / min flow point can be calibrated at the same time.

[0028] When the load capacity item needs to be detected, the flow meter front pressure test interface 7 and the load pressure test interface 12 are respectively connected with the standard digital pressure gauge, the steady flow hole insertion port 8 is sealed by the first sealing element 9, the filter membrane clamp insertion port 10 is sealed by the second sealing element 11, the valve 13 is connected with the flow calibrator, the fluorine sampler is opened, the valve 13 is slowly closed, the display value of the standard digital pressure gauge at the load pressure test interface is ensured to be within (-20-22) kPa, and at this time, the load capacity item can be detected.

[0029] As an improvement of the above-mentioned embodiment, the support frame 4 comprises a ring body 41 which is rotationally fitted with the lower circular tube, a support rod 42 which is hingedly connected to the ring body at the upper end, and a suction cup 43 which is hingedly connected to the lower end of the support rod. The suction cup can be a negative pressure rubber suction cup or a magnetic suction cup. In this improvement, the size of the support frame 4 can be adjusted to adapt to air fluorine compound samplers of different sizes, and the support frame 4 can be rotated to better avoid obstacles during installation.

[0030] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A quick connect for environmental air fluoride sampler traceability purposes, characterized by: The device comprises a circular cavity, an upper circular tube connected with the upper part of the circular cavity, a lower circular tube connected with the lower part of the circular cavity, and a support frame connected with the lower circular tube. A sealing ring and a magnet ring for pressing the sealing ring are arranged on the lower circular tube, and a flowmeter front pressure calibration interface, a steady flow orifice insertion port and a first sealing member for sealing the steady flow orifice insertion port are arranged on the lower circular tube, wherein the flowmeter front pressure calibration interface is above the magnet ring, and the steady flow orifice insertion port is above the flowmeter front pressure calibration interface. A filter membrane clamp insertion port and a second sealing member for sealing the filter membrane clamp insertion port are arranged on the circular cavity. A load pressure test interface and a valve are arranged on the upper circular tube, and the valve is above the load pressure test interface.

2. The environmental air fluoride sampler traceable quick connector of claim 1, wherein: The device further comprises filter membrane clamps for sampling when the flow rate is 50L / min and 16.7L / min.

3. The environmental air fluoride sampler traceable quick connector of claim 1, wherein: The device further comprises a steady flow orifice for sampling when the flow rate is 16.7L / min.

4. The environmental air fluorides sampler traceable quick connector of any one of claims 1-3, wherein: The support frame comprises a ring body in rotation cooperation with the lower circular tube, a support rod hingedly connected with the upper end of the ring body, and a suction disc hingedly connected with the lower end of the support rod.

5. The environmental air fluoride sampler traceable quick connector of claim 4, wherein: The suction disc is a negative pressure rubber suction disc or a magnetic suction disc.

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