Portable instrument sealing flow testing device

Abstract

The utility model relates to the technical field of power plant chemical instruments, in particular to a portable instrument sealing flow testing device. According to the technical scheme, the device comprises a sealing tank, a water inlet pipe communicated with the interior of the sealing tank is arranged at the bottom of the sealing tank, a water outlet pipe communicated with the interior of the sealing tank is arranged on the outer surface of the sealing tank, and a top cover in sealed connection with the sealing tank is arranged at the top of the sealing tank; a connecting part connected with a measuring instrument is arranged on the upper surface of the top cover, a PH measuring electrode electrically connected with the connecting part is arranged on the lower surface of the top cover, and the PH measuring electrode is located in the sealing tank. According to the utility model, closed water sample flow measurement can be realized, the consistency of the water sample temperature measured by a portable instrument and the water sample temperature measured by an on-line instrument is ensured, and meanwhile, the PH measuring electrode is used for measuring in the closed pool, so that the interference of carbon dioxide on measurement is prevented, and errors caused by different measuring conditions in the comparison process of the two instruments are effectively avoided; and the accuracy of comparison measurement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical instruments in power plants, in particular to a portable instrument sealing flow testing device. Background Art

[0002] Chemical instrumentation in power plants continuously monitors water quality, identifying problems and preventing accidents. Currently, testing typically involves real-time monitoring using an online pH meter at the production site. When abnormalities are detected, analysts bring portable pH meters for inspection and comparison. During the comparison between the portable pH meter in the power plant's chemical laboratory and the online pH meter at the production site, static measurements by the portable meter can cause errors due to interference from factors such as temperature differences and carbon dioxide. Utility Model Content

[0003] The utility model provides a portable instrument sealed flow test device, which can realize closed water sample flow measurement, ensure that the portable instrument measurement is consistent with the water sample temperature of the online instrument, and at the same time, the pH measurement electrode is measured in a closed pool, preventing the interference of carbon dioxide on the measurement, effectively avoiding the errors caused by different measurement conditions during the comparison of the two instruments, and improving the accuracy of the comparison measurement.

[0004] The technical solution of the utility model is as follows:

[0005] A portable instrument sealed flow testing device includes a sealed tank, wherein the bottom of the sealed tank is provided with a water inlet pipe connected to the interior thereof, the outer surface of the sealed tank is provided with a water outlet pipe connected to the interior thereof, and the top of the sealed tank is provided with a top cover sealedly connected thereto; the upper surface of the top cover is provided with a connecting component connected to a measuring instrument, the lower surface of the top cover is provided with a pH measuring electrode electrically connected to the connecting component, and the pH measuring electrode is located inside the sealed tank.

[0006] Furthermore, the portable instrument sealed flow testing device is provided with a sealing assembly in the water inlet pipe and the water outlet pipe; the sealing assembly includes a connecting shell, a support plate, a rubber sealing ball, a movable rod, a built-in slide and a reset spring, the connecting shell is connected to the inner wall of the water inlet pipe or the water outlet pipe via a plurality of support plates, a sealing groove is provided on the side of the water inlet pipe close to the sealing tank or the side of the water outlet pipe away from the sealing tank; a rubber sealing ball is provided in the sealing groove; the rubber sealing ball is provided with a movable rod on the outer surface facing the connecting shell, the other end of the movable rod slides into the connecting shell, the other end of the movable rod is provided with a built-in slide that slides in the connecting shell, and a reset spring is provided between the built-in slide and the connecting shell and is sleeved on the outer surface of the movable rod.

[0007] Furthermore, in the portable instrument sealed flow testing device, the sealing groove is trumpet-shaped.

[0008] Furthermore, in the portable instrument sealed flow testing device, the bottom of the sealed tank is also provided with a discharge pipe connected to the interior thereof, a valve is provided on the discharge pipe, and a collecting tank is provided at the bottom of the discharge pipe.

[0009] Furthermore, in the portable instrument sealed flow testing device, the collecting tank and the discharge pipe are connected by threads.

[0010] Furthermore, in the portable instrument sealed flow testing device, the top cover and the sealing tank are connected by threads.

[0011] Furthermore, in the portable instrument sealed flow testing device, the outer surface of the sealed tank is provided with a heat-insulating layer.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model can realize closed water sample flow measurement, ensuring that the portable instrument measurement is consistent with the online instrument water sample temperature. At the same time, the pH measurement electrode is measured in a closed pool, preventing the interference of carbon dioxide on the measurement, effectively avoiding the errors caused by different measurement conditions during the comparison of the two instruments, and improving the accuracy of the comparison measurement.

[0014] 2. The sealing component of the utility model can be automatically opened during the process of introducing water samples and automatically closed when the transportation stops, thereby avoiding impurities from the external environment from entering the sealed tank when not in use, further ensuring the cleanliness of the detection environment inside the sealed tank and the accuracy of water sample detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the portable instrument sealing flow test device;

[0016] Figure 2 Schematic diagram of the portable instrument sealed flow test device after removing the top cover;

[0017] Figure 3 is a schematic cross-sectional view of a sealing assembly;

[0018] In the figure: 1. Sealing tank; 2. Water inlet pipe; 3. Water outlet pipe; 4. Top cover; 5. Connecting parts; 6. pH measuring electrode; 7. Sealing assembly; 71. Connecting shell; 72. Support plate; 73. Sealing groove; 74. Rubber sealing ball; 75. Movable rod; 76. Built-in slide; 77. Return spring; 8. Discharge pipe; 9. Valve; 10. Collection tank. DETAILED DESCRIPTION

[0019] like Figure 1-3 As shown, a portable instrument sealed flow test device comprises a sealed tank 1, the outer surface of the sealed tank 1 is provided with a heat-insulating layer, the bottom of the sealed tank 1 is provided with a water inlet pipe 2 communicating with the interior thereof, the outer surface of the sealed tank 1 is provided with a water outlet pipe 3 communicating with the interior thereof, the top of the sealed tank 1 is provided with a top cover 4 sealedly connected thereto, the top cover 4 and the sealed tank 1 are connected by a thread; the upper surface of the top cover 4 is provided with a connecting component 5 connected to a measuring instrument, the lower surface of the top cover 4 is provided with a pH measuring electrode 6 electrically connected to the connecting component 5, and the pH measuring electrode 6 is located in the sealed tank 1; when in use, by connecting the power plant chemical laboratory pipeline to the water inlet pipe 2, the top cover 4 is provided with a water outlet pipe 3 communicating with the interior thereof ... Pipe 2 is connected, and water in the pipeline enters the sealed tank 1 through the water inlet pipe 2 and contacts the pH measuring electrode 6 in the sealed tank 1. The pH measuring electrode 6 tests the pH value in the water sample, and the data after the test is transmitted to the measuring instrument through the connecting component 5. The water sample after measurement is discharged through the outlet pipe 3; the above structure is adopted to realize closed water sample flow measurement, ensuring that the portable instrument measurement is consistent with the water sample temperature of the online instrument. At the same time, the pH measuring electrode 6 measures in the closed sealed tank 1, preventing the interference of carbon dioxide on the measurement, and effectively avoiding the errors caused by the different measurement conditions in the comparison process of the two instruments, thereby improving the accuracy of the comparison measurement and providing a basis for timely discovery of instrument problems.

[0020] The outer surface of the sealed tank 1 is provided with a heat-insulating layer, which reduces the heat loss of the fluid entering the sealed tank 1 and reduces the problem of a large temperature difference between the test device and the online test device.

[0021] A sealing assembly 7 is provided in the water inlet pipe 2 and the water outlet pipe 3; the sealing assembly 7 includes a connecting shell 71, a support plate 72, a rubber sealing ball 74, a movable rod 75, a built-in slide 76 and a return spring 77, the connecting shell 71 is connected to the inner wall of the water inlet pipe 2 or the water outlet pipe 3 through a plurality of support plates 72, and a sealing groove 73 is provided on the side of the water inlet pipe 2 close to the sealing tank 1 or the side of the water outlet pipe 3 away from the sealing tank 1; a rubber sealing ball 74 is provided in the sealing groove 73; the rubber sealing ball 74 is provided with a movable rod 75 on the outer surface of the rubber sealing ball 74 facing the connecting shell 71, the other end of the movable rod 75 is provided with a built-in slide 76 that slides in the connecting shell 71, and a return spring 77 is provided between the built-in slide 76 and the connecting shell 71 and is sleeved on the outer surface of the movable rod 75; the sealing groove 73 is trumpet-shaped. When the return spring 77 is not squeezed, the return spring 77 will form a thrust on the built-in slide plate 76, so that the built-in slide plate 76 is on the side away from the sealing groove 73. At the same time, the movable rod 75 pulls the rubber sealing ball 74 to seal the sealing groove 73, thereby minimizing the risk of external air entering the sealing tank 1 through the water inlet pipe 2 when not in use. When water in the power plant pipeline is passed into the water inlet pipe 2, the water flow will form a thrust on the rubber sealing ball 74, thereby causing the rubber sealing ball 74 to move to the side away from the connecting shell 71. At the same time, the movable rod 75 pulls the built-in slide plate 76 to slide in the connecting shell 71, and the return spring 77 is stressed and compressed. When the delivery is stopped, the rubber sealing ball 74 is pushed by the return spring 77 to seal the sealing groove 73 again. The above-mentioned sealing assembly 7 can be automatically opened during the introduction of water samples and automatically closed when the delivery is stopped, thereby minimizing the risk of impurities in the external environment entering the sealing tank 1 when not in use, further ensuring the cleanliness of the detection environment inside the sealing tank 1 and the accuracy of water sample detection. The water outlet pipe 3 is also provided with a sealing assembly 7, but the sealing groove 73 in the water outlet pipe 3 is arranged on the side of the water outlet pipe 3 away from the sealing tank 1, so that when the water sample in the sealing tank 1 is discharged, the water flow can push away the rubber sealing ball 74 and discharge.

[0022] The bottom of the sealed tank 1 is also provided with a discharge pipe 8 connected to the interior thereof, and a valve 9 is provided on the discharge pipe 8. A collection tank 10 is provided at the bottom of the discharge pipe 8, and the collection tank 10 is connected to the discharge pipe 8 by a threaded connection. When the water supply to the sealed tank 1 is stopped, the sealing assembly 7 in the water outlet pipe 3 and the water inlet pipe 2 are both sealed to the interior thereof, so that some water sample will remain in the sealed tank 1. At this time, it is only necessary to open the valve 9 on the discharge pipe 8, and the water sample in the sealed tank 1 will flow into the collection tank 10; after the operation is completed, the valve 9 can be closed. The above structure can minimize the possibility of some water sample remaining in the sealed tank 1, thereby affecting the accuracy of the next measurement.

[0023] The working process is as follows: by connecting the power plant pipeline with the water inlet pipe 2, the water in the pipeline enters the sealed tank 1 through the water inlet pipe 2 and contacts the pH measuring electrode 6 in the sealed tank 1, so that the pH measuring electrode 6 can test the pH value in the water sample. The data after the test is transmitted to the measuring instrument through the connecting component 5, and the measured water sample is discharged through the water outlet pipe 3.

Claims

1. A portable instrument sealing flow test device, characterized in that: The invention comprises a sealed tank, wherein the bottom of the sealed tank is provided with a water inlet pipe communicating with the interior thereof, the outer surface of the sealed tank is provided with a water outlet pipe communicating with the interior thereof, and the top of the sealed tank is provided with a top cover sealedly connected thereto; the upper surface of the top cover is provided with a connecting component connected to a measuring instrument, the lower surface of the top cover is provided with a pH measuring electrode electrically connected to the connecting component, and the pH measuring electrode is located inside the sealed tank.

2. The portable instrument sealing flow testing device according to claim 1, characterized in that: A sealing assembly is provided in the water inlet pipe and the water outlet pipe; the sealing assembly includes a connecting shell, a support plate, a rubber sealing ball, a movable rod, a built-in slide and a reset spring, the connecting shell is connected to the inner wall of the water inlet pipe or the water outlet pipe by a plurality of support plates, and a sealing groove is provided on the side of the water inlet pipe close to the sealing tank or the side of the water outlet pipe away from the sealing tank; a rubber sealing ball is provided in the sealing groove; a movable rod is provided on the outer surface of the rubber sealing ball facing the connecting shell, the other end of the movable rod slides into the connecting shell, the other end of the movable rod is provided with a built-in slide that slides in the connecting shell, and a reset spring is provided between the built-in slide and the connecting shell and is sleeved on the outer surface of the movable rod.

3. The portable instrument sealing flow testing device according to claim 2, characterized in that: The sealing groove is trumpet-shaped.

4. The portable instrument sealing flow testing device according to claim 1, characterized in that: The bottom of the sealed tank is also provided with a discharge pipe communicating with the interior thereof, the discharge pipe is provided with a valve, and the bottom of the discharge pipe is provided with a collecting tank.

5. The portable instrument sealing flow testing device according to claim 4, characterized in that: The collecting tank is connected to the discharge pipe via threads.

6. The portable instrument sealing flow testing device according to claim 1, characterized in that: The top cover is connected to the sealed can via threads.

7. The portable instrument sealing flow testing device according to claim 1, characterized in that: The outer surface of the sealed tank is provided with a heat-insulating layer.

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