Resistivity meter electrode fixing device

Abstract

The utility model belongs to the technical field of water quality detection equipment, and particularly relates to a resistivity meter electrode fixing device which comprises a fixing pipe body, a fluid detection passage is arranged in the fixing pipe body in the axial direction, threaded connectors are arranged at the two ends of the fixing pipe body, and a plurality of electrode through grooves are formed in the pipe wall of the fixing pipe body in the radial direction. A conductor assembly is arranged in the electrode through groove, at least one part of the conductor assembly stretches into the fluid detection channel, and a temperature measuring slot which stretches into the fluid detection channel but is not communicated with the fluid detection channel is formed in the side close to one of the threaded connectors. The conductor assemblies and the electrode circuit are in split connection and are preset in the fixed pipe body, so that the distance between the adjacent conductor assemblies and the contact area between the conductor assemblies and pure water cannot be changed along with the use of each time, the conductor assemblies are not easily influenced by water flow, interference factors are reduced, and measured data are more real and effective.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water quality detection equipment technical field, specifically related to a kind of resistivity instrument electrode fixing device. BACKGROUND

[0002] Resistivity tester is resistivity monitor, resistivity and temperature are displayed simultaneously, and it has the online panel type instrument of resistivity low limit alarm function, is widely used in pharmaceutical, electronic, chemical industry and other industries to the online monitoring of industrial process water quality. It uses single-chip microcomputer technology, and the temperature coefficient of pure water, electrode constant and resistivity low limit alarm point are freely set through the keys on the panel, and it is an ideal matching instrument for various small and medium-sized pure water equipment.

[0003] In the patent CN110629810B, a kind of model test device and test method for determining the influence of water baffle setting on foundation pit electro-osmosis effect are disclosed, which are composed of soil box, soil body, water baffle, electrode plate, probe, light foam board, wiring end, electrification clamp and direct current power supply, the soil body with specific moisture content is filled to the top surface height of soil box foundation pit, the left electrode plate, water baffle and probe are buried in foundation pit to a certain depth during filling, light foam board is piled up with ground level on the left side of water baffle and the top surface of foundation pit, and the right side of water baffle is continuously filled to the predetermined ground level while setting the right electrode plate and probe, after standing for 24 hours, remove the foam board, reinforce the foundation pit by electro-osmosis method, and measure the resistivity of the two poles of electrode plate and the nearby probe every 5 minutes to determine the time of electro-osmosis stability. By changing the material and burying depth of water baffle, it is an effective means to study the difference of electro-osmosis consolidation effect under the influence of water-proof material in actual engineering.

[0004] In the above scheme, the influence of different burying depths and materials on electro-osmosis can be studied through water baffle, but according to the constant electric field formula, it can be known that the distance between the two electrodes will affect the measured resistance value, and the probe lacks a means of fixed position, and the probe inserted in the soil may change position over time, resulting in deviation of the measured data. Utility model content

[0005] The utility model aims at the above problem, provide a kind of resistivity instrument electrode fixing device that can solve the above technical problems.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] The electrode fixing device of the resistivity meter comprises a fixing pipe body, a fluid detection passage is arranged in the fixing pipe body in the axial direction, threaded interfaces are arranged at both ends of the fixing pipe body, a plurality of electrode through grooves are radially arranged on the pipe wall of the fixing pipe body, a conductor assembly is arranged in the electrode through grooves and at least a part of the conductor assembly is inserted into the fluid detection passage, and a temperature measurement slot is arranged on the side of one of the threaded interfaces and extends into the fluid detection passage.

[0008] In the electrode fixing device of the resistivity meter, the conductor assembly comprises a conductive body and a connecting sheath, the conductive body is arranged in the electrode through groove, one side of the conductive body is inserted into the fluid detection passage, and the other side of the conductive body extends out of the fixing pipe body and is sleeved with the connecting sheath.

[0009] In the electrode fixing device of the resistivity meter, the connecting sheath comprises a hard plug-in section and a soft plug-in section, the hard plug-in section is sleeved with the part of the conductive body extending out of the fixing pipe body, and the soft plug-in section is plugged with a resistivity meter electrode and is in contact with the conductive body.

[0010] In the electrode fixing device of the resistivity meter, a plurality of curved avoiding grooves are arranged on the soft plug-in section.

[0011] In the electrode fixing device of the resistivity meter, a sealing insulation layer is arranged on the inner wall of the electrode through groove to insulate the contact between the conductive body and the fixing pipe body.

[0012] In the electrode fixing device of the resistivity meter, a temperature probe is arranged in the temperature measurement slot and extends into the temperature measurement slot from the fixing pipe body, and a temperature measurement point of the temperature probe is in contact with the inner wall of the temperature measurement slot.

[0013] In the electrode fixing device of the resistivity meter, a fixing clamp is arranged at the slot opening of the temperature measurement slot, and the fixing clamp clamps the temperature probe.

[0014] In the electrode fixing device of the resistivity meter, an axial extension plane inner wall is arranged on the inner wall of the fluid detection passage, and the electrode through groove is perpendicular to the plane inner wall.

[0015] In the electrode fixing device of the resistivity meter, an axial extension plane outer wall is arranged on the outer wall of the fixing pipe body, and the electrode through groove is perpendicular to the plane outer wall.

[0016] In the electrode fixing device of the resistivity meter, a plurality of pipe body fixing grooves are circumferentially arranged on the outer wall of the fixing pipe body, and at least one of the pipe body fixing grooves is arranged on the outer pipe wall corresponding to the threaded interface on the water inlet side.

[0017] The electrode fixing device of the resistivity meter has the following advantages:

[0018] Because the conductor components and electrode circuits are connected separately and are pre-installed in a fixed tube, neither the spacing between adjacent conductor components nor the contact area with pure water will change with each use. Furthermore, the conductor components are not easily affected by water flow, reducing interference factors and making the measured data more accurate and effective. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0021] Figure 3 This is a side view of the structure of this utility model.

[0022] Figure 4 This is a top view of the structure of this utility model.

[0023] In the diagram, the components are: fixed pipe body 1, fluid detection passage 11, threaded interface 12, electrode through groove 13, temperature measuring slot 14, sealing insulation layer 15, pipe body fixing groove 16, inner wall 17, outer wall 18, conductor assembly 2, conductor 21, connecting sleeve 22, rigid plug section 23, flexible plug section 24, resistivity meter electrode 3, temperature probe 4, and fixing clip 41. Detailed Implementation

[0024] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.

[0025] like Figures 1-4 As shown, the resistivity meter electrode fixing device includes a fixing tube 1, a fluid detection passage 11 is arranged axially inside the fixing tube 1, threaded interfaces 12 are provided at both ends of the fixing tube 1, and a plurality of electrode through grooves 13 are radially opened on the tube wall of the fixing tube 1. At least a portion of the conductor assembly 2 is provided in the electrode through groove 13 and protrudes into the fluid detection passage 11. A temperature measuring slot 14 is provided near one of the threaded interfaces 12, extending into but not connected to the fluid detection passage 11.

[0026] That is, the conductor components and electrode circuits are connected separately and are pre-installed in a fixed tube. Neither the spacing between adjacent conductor components nor the contact area with pure water will change with each use. Moreover, the conductor components are not easily affected by water flow, and the interference factors are reduced, resulting in more accurate and effective data.

[0027] The fixed pipe body 1 is designed with internal threads at both ends, and the inner diameter of the fluid detection passage 11 is smaller than that of the water inlet pipe, so that the water flow can fill the fluid detection passage 11, avoiding the influence of air in the fluid detection passage 11 on the detection results.

[0028] By the integrated fixed pipe body design, the split type conductor connection structure and the integrated temperature detection function, the problems of unstable electrode installation and temperature interference are solved, and the precision and reliability of pure water resistivity detection are significantly improved.

[0029] In this embodiment, the conductor assembly 2 includes a conductive body 21 and a connecting sheath 22. The conductive body 21 is arranged in the electrode passage 13, one side of the conductive body 21 extends into the fluid detection passage 11, and the other side of the conductive body 21 extends out of the fixed pipe body 1 and is sleeved with the connecting sheath 22.

[0030] The conductive body 21 is fixedly installed in the electrode passage 13, so as to determine the distance between the two detection points, avoid the measurement error caused by the field insertion of the probe of the conventional equipment, and reduce the loosening caused by the water flow impact in the fluid detection passage 11.

[0031] The connecting sheath 22 is installed outside the pipe of the conductive body 21, and the electrode connecting port is designed as a quick port structure that can be easily inserted. As long as the conductive body 21 is firmly installed, the connecting sheath 22 on the outside and the electrode can be relatively freely arranged.

[0032] In this embodiment, the connecting sheath 22 includes a hard insertion section 23 and a soft insertion section 24. The hard insertion section 23 is sleeved with the part of the conductive body 21 extending out of the fixed pipe body 1, and the soft insertion section 24 is inserted with the resistivity meter electrode 3 and is in contact with the conductive body 21.

[0033] Since the connection between the connecting sheath 22 and the conductive body 21 usually does not need to be frequently disassembled, the hard insertion section 23 is high-strength clamped with the conductive body 21 to ensure reliability, and the soft insertion section 24 is frequently inserted and pulled out with the resistivity meter electrode 3. The structure design with stronger ductility facilitates quick insertion with the electrode, and also meets the need of bending arrangement of the electrode line.

[0034] As a preferred, a plurality of bending avoidance grooves are formed on the soft insertion section 24.

[0035] A semicircular opening is formed transversely on the soft insertion section 24, so that the pipe walls near the avoidance grooves are not pressed against each other when bending, and the soft insertion section 24 can bend more smoothly along with the bending of the electrode line.

[0036] The avoidance grooves make the pipe walls around them more easily deformed, so that the pipe walls can be pressed to clamp the electrode after the electrode is inserted, thereby improving the connection strength and ensuring the close contact between the conductive body 21 and the resistivity meter electrode 3.

[0037] In the embodiment, the inner wall of the electrode through slot 13 is provided with a sealing insulation layer 15 to insulate the electric conductor 21 from the fixed pipe body 1.

[0038] The inner wall of the electrode through slot 13 is coated with a polytetrafluoroethylene sealing insulation layer 15 to prevent the electric conductor 21 from short circuiting with the pipe body and also as a sealing material between the electrode through slot 13 and the electric conductor 21.

[0039] In the embodiment, the temperature probe 4 is inserted into the temperature measuring slot 14 from the outside of the fixed pipe body 1, and the temperature measuring point of the temperature probe 4 is in contact with the inner wall of the temperature measuring slot 14.

[0040] The part of the temperature measuring slot 14 extending into the fluid detection passage 11 is in full contact with the water flow for heat conduction, and the temperature probe 4 in contact with the inner wall of the temperature measuring slot 14 measures the temperature value, which is transmitted to the external instrument through the wire, and the instrument automatically compensates the influence of temperature on resistivity through the built-in algorithm.

[0041] The temperature measuring point of the probe and the inner wall of the slot can be bonded by heat-conducting glue to ensure the temperature transfer efficiency.

[0042] As a preferred, the slot of the temperature measuring slot 14 is provided with a fixing clamp 41 clamping the temperature probe 4.

[0043] The fixing clamp 41 can be in the form of bolt locking or spring clamp to fix the temperature probe 4, so as to ensure the stable contact between the temperature measuring point of the temperature probe 4 and the inner wall of the temperature measuring slot 14.

[0044] In the embodiment, the inner wall of the fluid detection passage 11 is provided with an axially extending planar inner wall, and the electrode through slot 13 is perpendicular to the planar inner wall.

[0045] The outer wall of the fixed pipe body 1 is provided with an axially extending planar outer wall, and the electrode through slot 13 is perpendicular to the planar outer wall.

[0046] The planar inner wall and the planar outer wall are correspondingly and parallelly opened inside and outside, and the electrode through slot 13 is opened through the two inner and outer planes, which facilitates the opening of the through slot during processing and makes it easier to control the accuracy of the distance between the two electrode through slots 13.

[0047] In the embodiment, the outer wall of the fixed pipe body 1 is circumferentially provided with a plurality of pipe body fixing grooves 16, and at least one pipe body fixing groove 16 is provided on the outer pipe wall corresponding to the water inlet side threaded interface 12.

[0048] The plurality of pipe body fixing grooves 16 are circumferentially provided on the outer wall of the fixed pipe body 1, which can be fixed on the support through a clamp, and the pipe body fixing groove 16 is provided on the side of the water inlet end threaded interface 12, which can more stably connect the device with the water inlet pipe and reduce the influence of vibration on the detection result.

[0049] The device is installed in the ultrapure water circulating pipeline, when water flows through the fluid detection passage 11, the conductive body 21 detects the resistivity signal, the temperature probe 4 synchronously collects water temperature, the signal is transmitted to the external instrument through the wire, the instrument automatically compensates the influence of temperature on resistivity through the built-in algorithm. Through the integrated fixed pipe body design, the split type conductive body connecting structure and the integrated temperature detection function, the problems of unstable electrode installation and temperature interference are solved, and the precision and reliability of the pure water resistivity detection are significantly improved.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. An electrode fixing device for a resistivity meter comprising a fixing tube body (1), characterized in that, The fixed pipe body (1) is provided with a fluid detection passage (11) in the axial direction, both ends of the fixed pipe body (1) are provided with threaded interfaces (12), a plurality of electrode through grooves (13) are radially formed on the pipe wall of the fixed pipe body (1), at least a part of a conductor assembly (2) is arranged in the electrode through groove (13) and extends into the fluid detection passage (11), and a temperature measurement slot (14) extending into but not communicating with the fluid detection passage (11) is arranged on the side of one of the threaded interfaces (12).

2. The resistivity meter electrode fixation device of claim 1, wherein, The conductor assembly (2) comprises a conductive body (21) and a connecting sheath (22), the conductive body (21) is arranged in the electrode through groove (13), one side of the conductive body (21) extends into the fluid detection passage (11), and the other side of the conductive body (21) extends out of the fixed pipe body (1) and is sleeved with the connecting sheath (22).

3. The resistivity meter electrode fixation device of claim 2, wherein, The connecting sheath (22) comprises a hard plug-in section (23) and a soft plug-in section (24), the hard plug-in section (23) is sleeved with the part of the conductive body (21) extending out of the fixed pipe body (1), and the soft plug-in section (24) is plugged with a resistivity instrument electrode (3) and the resistivity instrument electrode (3) is in contact with the conductive body (21).

4. The resistivity meter electrode fixation device of claim 3, wherein, A plurality of curved avoiding grooves are formed on the soft plug-in section (24).

5. The resistivity meter electrode holder of claim 2, wherein, A sealing insulating layer (15) is arranged on the inner wall of the electrode through groove (13) to insulate the contact between the conductive body (21) and the fixed pipe body (1).

6. The resistivity meter electrode holder of claim 1, wherein, A temperature probe (4) extending into the temperature measurement slot (14) from the outside of the fixed pipe body (1) is arranged in the temperature measurement slot (14), and the temperature measurement point of the temperature probe (4) is in contact with the inner wall of the temperature measurement slot (14).

7. The resistivity meter electrode fixation device of claim 6, wherein, A fixing clamp (41) is arranged at the slot opening of the temperature measurement slot (14), and the fixing clamp (41) clamps the temperature probe (4).

8. The resistivity meter electrode fixation device of claim 1, wherein, An axial extending planar inner wall is arranged on the inner wall of the fluid detection passage (11), and the electrode through groove (13) is perpendicular to the planar inner wall.

9. The resistivity meter electrode fixation device of claim 1, wherein, An axial extending planar outer wall is arranged on the outer wall of the fixed pipe body (1), and the electrode through groove (13) is perpendicular to the planar outer wall.

10. The resistivity meter electrode fixation device of claim 1, wherein, A plurality of pipe body fixing grooves (16) are circumferentially formed on the outer wall of the fixed pipe body (1), and at least one of the pipe body fixing grooves (16) is formed on the outer pipe wall corresponding to one of the threaded interfaces (12) on the water inlet side.

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