Underground water dissolved oxygen and oxidation-reduction potential measuring device

Abstract

The utility model provides a device for measuring dissolved oxygen and oxidation-reduction potential of underground water. Comprising an adjustable supporting frame, a cable drum assembly arranged below the adjustable supporting frame, a composite cable arranged on the cable drum assembly, a self-adaptive adjusting assembly arranged at the bottom of the composite cable and a detection assembly arranged at the bottom end of the self-adaptive adjusting assembly. The underground water dissolved oxygen and oxidation-reduction potential detection device can accurately detect underground water dissolved oxygen and oxidation-reduction potential, and signal stability and environmental adaptability are improved.

Description

A groundwater dissolved oxygen and redox potential measuring device Technical Field

[0001] This utility model relates to the field of groundwater measurement technology, and in particular to a device for measuring dissolved oxygen and oxidation-reduction potential in groundwater. Background Technology

[0002] In groundwater surveys, dissolved oxygen (DO) and oxidation-reduction potential (ORP) are crucial indicators for on-site monitoring and are essential for analyzing the redox environment of groundwater. Currently, DO and ORP are primarily measured through on-site sampling, requiring samples to be taken to the surface. However, groundwater is disturbed during sampling, and the DO and ORP of the water sample readily change upon contact with air, making accurate results difficult to obtain. Furthermore, the different signal types of DO and ORP sensors (such as polarography or fluorescence) (the former may be analog current / voltage or digital signals, while the latter is a DC potential signal) cause interference between the signals, further hindering groundwater analysis and surveys. Summary of the Invention

[0003] The purpose of this invention is to provide a groundwater dissolved oxygen and redox potential measuring device that can accurately detect groundwater dissolved oxygen and redox potential, thereby improving signal stability and environmental adaptability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a groundwater dissolved oxygen and oxidation-reduction potential measuring device, comprising an adjustable support frame, a cable reel assembly disposed below the adjustable support frame, a composite cable disposed on the cable reel assembly, an adaptive adjustment component disposed at the bottom of the composite cable, and a detection component disposed at the bottom of the adaptive adjustment component.

[0005] Optionally, the adjustable support frame includes a cross-shaped connecting crossbar, a mechanical telescopic column disposed below the cross-shaped connecting crossbar, and a stabilizing component disposed at the bottom of the mechanical telescopic column. The outer side of the mechanical telescopic column is provided with adjusting bolts for adjusting the height of the mechanical telescopic column.

[0006] The stabilizing component includes a connecting base, a stabilizing bracket disposed at the bottom of the connecting base, and a rubber pad disposed at the bottom of the stabilizing bracket. The stabilizing bracket consists of four sub-braces. A connecting spring connects the stabilizing bracket to the connecting base. The rubber pad is provided with a groove that matches the stabilizing bracket.

[0007] Optionally, the cable reel assembly includes a U-shaped connecting frame disposed below the cross-shaped connecting crossbar and a cable reel disposed below the U-shaped connecting frame, with connecting bolts connecting the U-shaped connecting frame and the cable reel.

[0008] Optionally, the composite cable includes a wear-resistant sheath protective layer, an inner layer disposed on the inner surface of the wear-resistant sheath protective layer, and four signal lines disposed inside the inner layer, a cross-shaped tensile reinforcing core, and waterproof sealant filling. The signal lines include a first signal line for transmitting dissolved oxygen sensor signals, a second signal line for transmitting oxidation-reduction potential sensor signals, a third signal line for transmitting voltage power supply, and a fourth signal line for ground shielding.

[0009] Optionally, the adaptive adjustment assembly includes a support sleeve disposed at the bottom of the composite cable, and four support rods and eight connecting springs disposed on the outside of the support sleeve.

[0010] One end of the support rod is provided with a rotating shaft, and the other end of the support rod is provided with a roller. One end of the support rod is movably connected to the middle of the support sleeve through the rotating shaft.

[0011] One end of the connecting spring is connected to the middle of the support rod, and the other end of the connecting spring is connected to the top or bottom of the support sleeve.

[0012] Optionally, the detection assembly includes a first waterproof electrical connector disposed at the bottom of the composite cable and the support sleeve, a dissolved oxygen sensor disposed at the bottom of the waterproof electrical connector, a second waterproof electrical connector disposed at the bottom of the dissolved oxygen sensor, and a redox potential sensor disposed at the bottom of the second waterproof electrical connector.

[0013] Therefore, the beneficial effects achieved by the groundwater dissolved oxygen and redox potential measuring device with the above-described structure are as follows:

[0014] 1. Precise monitoring: It can realize real-time detection of dissolved oxygen and oxidation-reduction potential downhole, avoiding the influence of the external environment on sampling during the sampling process.

[0015] 2. High adaptability: By setting an adjustable support frame and adaptive adjustment components, it can adapt to wells of different sizes, improving the practicality of the device.

[0016] 3. Strong signal stability: By using composite cables and different signal lines for different signal types, mutual interference between signals is avoided, effectively improving signal stability. Simultaneously, the wear-resistant sheath, made of low-temperature resistant and chemically corrosion-resistant materials such as polyurethane (PU) and fluororubber, can adapt to the low-temperature and corrosive environments of groundwater. The addition of waterproof sealant, such as silicone gel, prevents moisture penetration along the cable's longitudinal direction, further enhancing environmental adaptability.

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the device structure provided by this utility model;

[0020] Figure 2 is a structural schematic diagram of the stabilizing component provided by this utility model;

[0021] Figure 3 is a structural schematic diagram of the composite cable provided by this utility model;

[0022] Figure 4 is a schematic diagram of the device structure of the adaptive adjustment component provided by this utility model;

[0023] Reference numerals: 1. Cross-shaped connecting crossbar; 2. Mechanical telescopic column; 21. Adjusting bolt; 3. Stabilizing component; 31. Connecting seat; 32. Stabilizing bracket; 321. Sub-bracket; 33. Rubber pad; 34. First connecting spring; 41. U-shaped connecting frame; 42. Cable reel; 43. Connecting bolt; 5. Composite cable; 51. Wear-resistant sheath; 52. Inner layer; 53a. First signal line; 53b. Second signal line; 53c. Third signal line; 53d. Fourth signal line; 54. Cross-shaped tensile reinforcing core; 55. Waterproof sealant filling; 6. Adaptive adjustment component; 61. Support sleeve; 62. Support rod; 621. Rotating shaft; 622. Roller; 63. Second connecting spring; 71. First waterproof electrical connector; 72. Dissolved oxygen sensor; 73. Second waterproof electrical connector; 74. Oxidation-reduction potential sensor. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0025] Example

[0026] As shown in Figures 1-4, this utility model provides a groundwater dissolved oxygen and oxidation-reduction potential measuring device, including an adjustable support frame, a cable reel assembly disposed below the adjustable support frame, a composite cable 5 disposed on the cable reel assembly, an adaptive adjustment component 6 disposed at the bottom of the composite cable 5, and a detection component disposed at the bottom of the adaptive adjustment component 6. Wherein:

[0027] As shown in Figure 1, the adjustable support frame includes a cross-shaped connecting crossbar 1, a mechanical telescopic column 2 located below the cross-shaped connecting crossbar, and a stabilizing component 3 located at the bottom of the mechanical telescopic column 2. The outer side of the mechanical telescopic column 2 is provided with an adjusting bolt 21 for adjusting the height of the mechanical telescopic column 2; the height of the device can be adjusted according to the actual situation of the monitoring wellhead.

[0028] As shown in Figure 2, the stabilizing component 3 includes a connecting base 31, a stabilizing bracket 32 ​​disposed at the bottom of the connecting base 31, and a rubber pad 33 disposed at the bottom of the stabilizing bracket 32. The stabilizing bracket 32 ​​consists of four sub-branchs. A first connecting spring 34 connects the stabilizing bracket 32 ​​to the connecting base 31. The rubber pad 33 has a groove adapted to the stabilizing bracket 32. In use, after adjusting the height of the device, the rubber pad 33 is removed, and the four sub-branchs automatically separate and spring open by the first connecting spring 34, achieving stable placement of the device.

[0029] As shown in Figure 1, the cable reel assembly includes a U-shaped connecting frame 41 disposed below the cross-shaped connecting crossbar 1 and a cable reel 42 disposed below the U-shaped connecting frame 41, with a connecting bolt 43 connecting the U-shaped connecting frame 41 and the cable reel 42.

[0030] As shown in Figure 3, the composite cable 5 includes a wear-resistant sheath 51, an inner layer 52 disposed on the inner surface of the wear-resistant sheath 51, four signal lines disposed inside the inner layer 52, a cross-shaped tensile reinforcing core 54, and waterproof sealant 55. The signal lines include a first signal line 53a for transmitting dissolved oxygen sensor signals, a second signal line 53b for transmitting redox potential sensor signals, a third signal line 53c for transmitting voltage power supply, and a fourth signal line 53d for ground shielding.

[0031] The wear-resistant sheath protective layer uses low-temperature resistant and chemically corrosion-resistant materials, such as polyurethane (PU) and fluororubber, to adapt to the low-temperature and corrosive environment of groundwater. Waterproof sealant 55 is used to prevent moisture penetration along the cable's longitudinal direction. The cross-shaped tensile reinforcement core 54 enhances the cable's tensile strength when vertically laid in deep wells, preventing internal conductor breakage due to its own weight or dragging. Near the sensor end of the cable, an amplifier circuit and an A / D converter can be integrated according to actual needs.

[0032] As shown in Figure 4, the adaptive adjustment component 6 includes a support sleeve 61 disposed at the bottom of the composite cable 5, four support rods 62 disposed on the outside of the support sleeve 61, and eight second connecting springs 63.

[0033] One end of the support rod 62 is provided with a rotating shaft 621, and the other end of the support rod 62 is provided with a roller 622. One end of the support rod 62 is movably connected to the middle part of the support sleeve 61 through the rotating shaft 621. One end of the second connecting spring 63 is connected to the middle part of the support rod 62, and the other end of the second connecting spring 63 is connected to the top or bottom of the support sleeve 61.

[0034] When the adaptive adjustment component 6 is inserted into the pipe or well, the support rod 62 forms an angle with the support sleeve 61 through the rotating shaft 621 according to the actual size of the well, so that the roller 622 presses against the pipe wall or well wall. This not only allows for the use of different pipe or well sizes, but also enables the sensor to move down smoothly.

[0035] As shown in Figure 1, the detection assembly includes a first waterproof electrical connector 71 disposed at the bottom of the composite cable 5 and the support sleeve 61, a dissolved oxygen sensor 72 disposed at the bottom of the waterproof electrical connector 71, a second waterproof electrical connector 73 disposed at the bottom of the dissolved oxygen sensor 72, and a redox potential sensor 74 disposed at the bottom of the second waterproof electrical connector 73.

[0036] Therefore, this invention provides a groundwater dissolved oxygen and redox potential measuring device, which can accurately detect groundwater dissolved oxygen and redox potential, and improve signal stability and environmental adaptability.

[0037] Finally, it should be noted that specific examples have been used in this document to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. Furthermore, those skilled in the art will recognize that, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A device for measuring dissolved oxygen and redox potential in groundwater, characterized in that: It includes an adjustable support frame, a cable reel assembly disposed below the adjustable support frame, a composite cable disposed on the cable reel assembly, an adaptive adjustment component disposed at the bottom of the composite cable, and a detection component disposed at the bottom of the adaptive adjustment component.

2. The groundwater dissolved oxygen and redox potential measuring device according to claim 1, characterized in that: The adjustable support frame includes a cross-shaped connecting crossbar, a mechanical telescopic column located below the cross-shaped connecting crossbar, and a stabilizing component located at the bottom of the mechanical telescopic column. The outer side of the mechanical telescopic column is provided with an adjusting bolt for adjusting the height of the mechanical telescopic column. The stabilizing component includes a connecting seat, a stabilizing bracket located at the bottom of the connecting seat, and a rubber pad located at the bottom of the stabilizing bracket. The stabilizing bracket is composed of four sub-braces. A connecting spring connects the stabilizing bracket to the connecting seat. The rubber pad is provided with a groove adapted to the stabilizing bracket.

3. The groundwater dissolved oxygen and redox potential measuring device according to claim 2, characterized in that: The cable reel assembly includes a U-shaped connecting frame disposed below the cross-shaped connecting crossbar and a cable reel disposed below the U-shaped connecting frame, with connecting bolts connecting the U-shaped connecting frame and the cable reel.

4. The groundwater dissolved oxygen and redox potential measuring device according to claim 3, characterized in that: The composite cable includes a wear-resistant sheath protective layer, an inner layer disposed on the inner surface of the wear-resistant sheath protective layer, and four signal lines disposed inside the inner layer, a cross-shaped tensile reinforcing core, and waterproof sealant filling. The signal lines include a first signal line for transmitting dissolved oxygen sensor signals, a second signal line for transmitting oxidation-reduction potential sensor signals, a third signal line for transmitting voltage power supply, and a fourth signal line for ground shielding.

5. The groundwater dissolved oxygen and redox potential measuring device according to claim 4, characterized in that: The adaptive adjustment assembly includes a support sleeve disposed at the bottom of the composite cable, and four support rods and eight connecting springs disposed on the outside of the support sleeve; one end of each support rod is provided with a rotating shaft, and the other end of each support rod is provided with a roller, and one end of each support rod is movably connected to the middle of the support sleeve through the rotating shaft; one end of each connecting spring is connected to the middle of the support rod, and the other end of each connecting spring is connected to the top or bottom of the support sleeve.

6. The groundwater dissolved oxygen and redox potential measuring device according to claim 5, characterized in that: The detection assembly includes a first waterproof electrical connector disposed at the bottom of the composite cable and the support sleeve, a dissolved oxygen sensor disposed at the bottom of the waterproof electrical connector, a second waterproof electrical connector disposed at the bottom of the dissolved oxygen sensor, and a redox potential sensor disposed at the bottom of the second waterproof electrical connector.

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