CN215066307U - Wide-range constant-temperature bipolar pulse conductance detector - Google Patents
Wide-range constant-temperature bipolar pulse conductance detector Download PDFInfo
- Publication number
- CN215066307U CN215066307U CN202120675602.2U CN202120675602U CN215066307U CN 215066307 U CN215066307 U CN 215066307U CN 202120675602 U CN202120675602 U CN 202120675602U CN 215066307 U CN215066307 U CN 215066307U
- Authority
- CN
- China
- Prior art keywords
- heating body
- heating
- cavity
- temperature
- conduit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of conductance detectors, in particular to a wide-range constant-temperature bipolar pulse conductance detector.A front cover and a rear cover are detachably connected together to form a first accommodating cavity, a heating cavity is arranged in a heating body, the heating body mainly comprises a first heating body and a second heating body, the heating body is fixedly arranged in the first accommodating cavity, and a winding bar is fixedly connected with the heating body and is positioned in the heating cavity; the conductivity detection module is arranged in the heating cavity, one end of the first conduit is communicated with the liquid inlet two-way, the other end of the first conduit is communicated with the conductivity detection module, and the first conduit is wound on the winding rod; one end of the second conduit is communicated with the conductivity detection module, and the other end is communicated with the liquid outlet two-way. The utility model discloses a set up cavity temperature sensor and heating member temperature sensor and reduce temperature monitoring's error, utilize cavity temperature sensor and heating member temperature sensor to realize local accurate accuse temperature, make whole conductivity cell reach the constant temperature effect, guarantee that the detecting element realizes the measurement of no drift.
Description
Technical Field
The utility model relates to a conductivity detector technical field especially relates to wide-range constant temperature bipolar pulse conductivity detector.
Background
The conductivity detector is an electrochemical detector with high selectivity and high sensitivity to halogen, sulfur and nitrogen compounds. It detects the content of original component according to the change of solvent conductivity. In recent years, the volume of the conductivity cell has been greatly reduced, and the conductivity cell can be connected with a capillary column. It is widely used as an element selective detector in the fields of environmental protection, medical health, biomedicine and the like.
The traditional conductivity detector has low resolution, can not precisely regulate and control local temperature and overall temperature, and is difficult to ensure long-time high-precision non-offset measurement of a detection unit.
Therefore, the utility model provides a wide-range constant-temperature bipolar pulse conductance detector.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art, and providing a wide-range constant-temperature bipolar pulse conductivity detector, which adopts the following technical scheme:
a wide-range constant temperature bipolar pulsed conductance detector, comprising: the liquid-feeding type heating device comprises a front cover, a rear cover, a liquid-feeding two-way valve, a liquid-discharging two-way valve, a heating body, a winding bar, a first conduit, a second conduit and a conductivity detection module, wherein the front cover and the rear cover are detachably connected together to form a first accommodating cavity; the conductivity detection module is arranged in the heating cavity, one end of the first conduit is communicated with the liquid inlet two-way, the other end of the first conduit is communicated with the conductivity detection module, and the first conduit is wound on the winding rod; one end of the second conduit is communicated with the conductivity detection module, and the other end of the second conduit is communicated with the liquid outlet two-way.
On the basis of the technical scheme, the conductivity detection module comprises a first electrode simulator, a second electrode simulator and a pool simulator, wherein one end of the pool simulator is connected with the first electrode simulator, and the other end of the pool simulator is connected with the second electrode simulator.
On the basis of the technical scheme, the heating device further comprises a circuit board, a cavity temperature sensor used for detecting the temperature in the heating cavity is arranged in the heating cavity, a heating body temperature sensor used for detecting the temperature of the heating body is arranged on the heating body, and the circuit board is electrically connected with the conductivity detection module, the cavity temperature sensor, the heating body temperature sensor and the heating body.
On the basis of the technical scheme, the head end of the winding rod is provided with a connecting part which is circular, and the connecting part is connected with the first heating body and the second heating body through screws, so that the first heating body, the second heating body and the third heating body are combined into a whole.
On the basis of the technical scheme, the heating cavity is internally provided with a separating part, the separating part is formed on the first heating body and/or the second heating body, the separating part separates the heating cavity into two communicated cavities, the winding rod and the conductivity detection module are respectively arranged in the two cavities, and one side of the separating part departing from the liquid outlet two-way cavity is provided with a notch for the first conduit to pass through. The purpose is to increase the heating area and realize better heat preservation and temperature control.
On the basis of the technical scheme, one end of the winding rod is provided with an axial hole and a first radial hole, the axial hole is communicated with the first radial hole, and the other end of the winding rod is provided with a second radial through hole; the first conduit penetrates through the axial hole, penetrates out of the first radial hole, spirally winds on the winding rod and then penetrates out of the second radial through hole. The purpose is to increase the heating area, realize better heat preservation and temperature control, facilitate the fixation of the conducting wire and have compact structure.
On the basis of the technical scheme, the circuit board is arranged in the first accommodating cavity, and the joint of the circuit board penetrates through the rear cover.
On the basis of the technical scheme, heat-insulating sponges are arranged on six inner wall surfaces of the first accommodating cavity, and the heating body is wrapped by the heat-insulating sponges.
The liquid inlet two-way pipe and the liquid outlet two-way pipe are connected with the heating body through connecting pieces.
On the basis of the technical scheme, the number of the cavity temperature sensors is two, one cavity temperature sensor is fixedly installed in the notch, and the other cavity temperature sensor is fixedly installed in the cavity where the conductivity detection module is located and is located on one side of the second electrode simulator; the number of the heating body temperature sensors is two, and the two heating body temperature sensors are respectively arranged on two sides of the heating body and are positioned in the heating body.
A wide-range constant temperature bipolar pulsed conductance detector, comprising: the liquid level detection device comprises a front cover, a rear cover, a liquid inlet two-way valve, a liquid outlet two-way valve, a heating body, a winding bar, a conduit, a circuit board and a conductivity detection module, wherein the front cover and the rear cover are detachably connected together to form a first accommodating cavity, the heating body is internally provided with a heating cavity, the heating body mainly comprises a first heating body and a second heating body, the heating body is fixedly arranged in the first accommodating cavity, the winding bar is fixedly connected with the heating body and is positioned in the heating cavity, the conductivity detection module comprises an exciting coil and an induction coil, the conductivity detection module is arranged in the heating cavity, one end of the first conduit is connected with the liquid inlet two-way valve, and the other end of the first conduit is wound on the winding bar, penetrates through the conductivity detection module and then is connected with the liquid outlet two-way valve; the heating cavity is internally provided with a cavity temperature sensor for detecting the temperature in the heating cavity, the heating body is provided with a heating body temperature sensor for detecting the temperature of the heating body, and the circuit board is electrically connected with the conductivity detection module, the cavity temperature sensor, the heating body temperature sensor and the heating body.
The utility model has the advantages of as follows: the wide-range constant-temperature bipolar pulse conductivity detector reduces temperature monitoring errors by arranging the cavity temperature sensor and the heating body temperature sensor, and meanwhile, local precise temperature control is achieved by using the cavity temperature sensor and the heating body temperature sensor, so that the whole conductivity cell achieves a constant temperature effect, and the detection unit is guaranteed to achieve long-time high-precision drift-free measurement.
The wide-range constant-temperature bipolar pulse conductance detector enhances the uniformity and controllability of the temperature of the flow path in the heating cavity by arranging the winding rod, the separating part and the heat-insulating sponge.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawing in the following description is only an embodiment of the invention, and that for a person skilled in the art, other embodiments can be derived from the drawing provided without inventive effort.
FIG. 1: is one of the decomposition structure schematic diagrams of the utility model;
FIG. 2: the second is the decomposition structure diagram of the utility model;
FIG. 3: is a schematic view of the structure of the utility model;
FIG. 4: is a schematic view of the front view cross-sectional structure of the utility model;
FIG. 5: is a schematic view of the cross-sectional structure at A of the utility model;
FIG. 6: is the schematic sectional structural diagram of the utility model at B.
Detailed Description
The invention will be further described with reference to the following figures and examples:
reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1 to 6, the wide-range constant-temperature bipolar pulsed conductance detector of the present embodiment includes: a front cover 1, a rear cover 2, a liquid inlet two-way 3, a liquid outlet two-way 4, a heating body 5, a winding rod 7, a first conduit, a second conduit, a circuit board 8 and an electric conductivity detection module 10, the front cover 1 and the rear cover 2 are detachably connected together to form a first accommodating cavity, a heating cavity 5a is arranged in the heating body 5, the heating body 5 mainly comprises a first heating body 5-1 and a second heating body 5-2, the heating body 5 is fixedly arranged in the first accommodating cavity, the winding rod 7 is fixedly connected with the heating body 5 and is positioned in the heating cavity 5a, the conductivity detection module 10 comprises a first electrode analogue body 10-1, a second electrode analogue body 10-2 and a cell analogue body 10-3, one end of the pool simulator 10-3 is connected with the first electrode simulator 10-1, and the other end of the pool simulator is connected with the second electrode simulator 10-2; the conductivity detection module 10 is arranged in the heating cavity 5a, one end of the first conduit is communicated with the liquid inlet two-way pipe 3, the other end of the first conduit is communicated with the conductivity detection module, and the first conduit is wound on the winding rod 7; the purpose is to increase the heating area and realize better heat preservation and temperature control, one end of the second conduit is communicated with the conductivity detection module, and the other end is communicated with the liquid outlet two-way 4; the heating cavity 5a is provided with a cavity temperature sensor 52 for detecting the temperature in the heating cavity, the heating body 5 is provided with a heating body temperature sensor 51 for detecting the temperature of the heating body, and the circuit board 8 is electrically connected with the conductivity detection module 10, the cavity temperature sensor, the heating body temperature sensor and the heating body 5.
On the basis of the above technical solution, the head end of the winding bar 7 is formed with a connecting portion 7a, which is circular for example, and the connecting portion 7a is connected with the first heating body 5-1 and the second heating body 5-2 by screws, so that the three are integrated.
On the basis of the technical scheme, the heating cavity 5a is internally provided with a separating part 50, the separating part 50 is formed on the first heating body 5-1 and/or the second heating body 5-2, the heating cavity 5a is separated into two communicated chambers by the separating part 50, the winding rod 7 and the conductivity detection module 10 are respectively arranged in the two chambers, and one side of the separating part 50, which is far away from the liquid outlet two-way 4, is provided with a notch 50a for the first conduit to pass through. The purpose is to increase the heating area and realize better heat preservation and temperature control.
On the basis of the technical scheme, one end of the winding rod 7 is provided with an axial hole 70 and a first radial hole 71, the axial hole 70 is communicated with the first radial hole 71, and the other end of the winding rod is provided with a second radial through hole 72; the first conduit passes through the axial hole 70, passes through the first radial hole 71, passes through the wire winding rod 7, and passes through the second radial through hole 72. The winding bar 7 aims to increase the heating area and realize better heat preservation and temperature control, and meanwhile, the winding bar 7 and the axial hole 70, the first radial hole 71 and the second radial through hole 72 thereof facilitate the fixation of a wire and have a compact structure.
On the basis of the above technical scheme, the circuit board 8 is arranged in the first accommodating cavity, and the joint of the circuit board passes through the rear cover 2.
On the basis of the technical scheme, heat-insulating sponges 9 are arranged on six inner wall surfaces of the first accommodating cavity, and the heating body 5 is wrapped by the heat-insulating sponges.
The liquid inlet two-way pipe 3 and the liquid outlet two-way pipe 4 are connected with a heating body 5 through a connecting piece 11.
On the basis of the above technical scheme, the number of the cavity temperature sensors 52 is two, one cavity temperature sensor 52 is fixedly installed in the notch 50a, and the other cavity temperature sensor is fixedly installed in the cavity where the conductivity detection module 10 is located and is located on one side of the second electrode simulator 10-2; the number of the heating body temperature sensors 51 is two, and the two heating body temperature sensors 51 are respectively installed at both sides of the heating body 5 and located inside the heating body 5.
The working principle is as follows: the liquid enters the first conduit (not shown in the figure) from the liquid inlet two-way pipe 3 and then moves along the first conduit. The first conduit passes in through the axial hole 70, out through the first radial hole 71, then spirally wound around the outer lateral surface of the bar 7, close to the second radial through hole 72, and finally passes through the second radial through hole 72. After passing through the second radial through hole 72, the first conduit enters another chamber of the heating chamber 5a through the notch 50a, and then the first conduit is fixedly connected with the first electrode analogue 10-1. The liquid enters the pool simulator 10-3 from the first electrode simulator 10-1 and enters the second conduit through the second electrode simulator 10-2. Then the liquid moves along the second conduit and finally leaves the device through the two outlet ports 4.
The heat of the heating body 5 is transferred to the winding rod 7 by contact and then from the winding rod 7 to the first conduit by contact. The first conduit is wound around the winding rod 7 and is heated uniformly. After the first conduit is removed from contact with the winding rod 7, the first conduit is subjected to heat transfer by the air in the heating chamber 5 a.
When the temperature is detected, the average value of the temperatures detected by the chamber temperature sensor 52 is taken as the temperature of the liquid. Heating body temperature sensor 51 plays the effect of accurate regulation heating body 5 temperature, can confirm through the contrast between heating body 5's temperature and the heating chamber 5a (both temperatures are confirmed through the function or are confirmed through the table of contrast data), be 90 degrees if heating body 5's temperature, then heating chamber 5a is 85 degrees, need adjust heating chamber 5 a's temperature to 85 degrees this moment, heating body 5's temperature can directly be adjusted to 90 degrees, the heating capacity of the temperature of not constantly adjusting heating body 5 according to the reaction of cavity temperature sensor 52, the precision of control by temperature change has been improved.
Wherein, the partition 50 can increase the heating area in the heating chamber 5a, making the temperature more uniform.
The heating body 5 is used as the shell of the pool body, the heating cavity 5a can be uniformly heated under the airtight condition during heating, meanwhile, the temperature can be monitored in real time by the multipoint temperature control embedded in the two sides of the pool body to carry out local precise temperature control, and when the temperature in the pool body is lower than the set temperature, signal feedback can be carried out in time to heat again. A voltage stabilizing diode and a thermistor are connected to an operational amplifier circuit through an adjustable potentiometer, and the negative end of the amplifier circuit is connected with the output end of the circuit, so that the reference temperature of the free end of the temperature sensor can be more appropriate. The positive and negative temperature coefficient elements are combined, so that the positive and negative phases are balanced, and the error is reduced. Therefore, the whole conductivity cell achieves a constant temperature effect, and the detection unit is ensured to realize long-time high-precision drift-free measurement.
The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modification or variation based on the present invention is within the scope of the present invention.
Claims (9)
1. A wide-range constant-temperature bipolar pulsed conductance detector, comprising: the liquid inlet and outlet device comprises a front cover (1), a rear cover (2), a liquid inlet and outlet two-way pipe (3), a liquid outlet and outlet two-way pipe (4), a heating body (5), a winding bar (7), a first guide pipe, a second guide pipe and a conductivity detection module (10), wherein the front cover (1) and the rear cover (2) are detachably connected together to form a first accommodating cavity, a heating cavity (5a) is formed in the heating body (5), the heating body (5) mainly comprises a first heating body (5-1) and a second heating body (5-2), the heating body (5) is fixedly arranged in the first accommodating cavity, and the winding bar (7) is fixedly connected with the heating body (5) and is positioned in the heating cavity (5 a); the conductivity detection module (10) is arranged in the heating cavity (5a), one end of the first conduit is communicated with the liquid inlet two-way pipe (3), the other end of the first conduit is communicated with the conductivity detection module, and the first conduit is wound on the winding rod (7); one end of the second conduit is communicated with the conductivity detection module, and the other end of the second conduit is communicated with the liquid outlet two-way (4).
2. The wide-range constant-temperature bipolar pulsed conductance detector of claim 1, wherein: the conductivity detection module (10) comprises a first electrode simulation body (10-1), a second electrode simulation body (10-2) and a pool simulation body (10-3), wherein one end of the pool simulation body (10-3) is connected with the first electrode simulation body (10-1), and the other end of the pool simulation body is connected with the second electrode simulation body (10-2).
3. The wide-range constant-temperature bipolar pulsed conductance detector of claim 1, wherein: still include circuit board (8), be provided with cavity temperature sensor (52) that are used for detecting the heating intracavity temperature in heating chamber (5a), be provided with heating body temperature sensor (51) that are used for detecting the heating body temperature itself on heating body (5), circuit board (8) are connected with conductivity detection module (10), cavity temperature sensor, heating body temperature sensor and heating body (5) electricity.
4. The wide-range constant-temperature bipolar pulsed conductance detector of claim 1, wherein: the head end of the winding bar (7) is provided with a connecting part (7a), and the connecting part (7a) is connected with the first heating body (5-1) and the second heating body (5-2) through screws, so that the three parts are combined into a whole.
5. The wide-range constant-temperature bipolar pulsed conductance detector of claim 3, wherein: the heating cavity (5a) is internally provided with a separating part (50), the separating part (50) is formed on the first heating body (5-1) and/or the second heating body (5-2), the heating cavity (5a) is separated into two communicated cavities by the separating part (50), the winding bar (7) and the conductivity detection module (10) are respectively arranged in the two cavities, and one side of the separating part (50) departing from the liquid outlet two-way pipe (4) is provided with a notch (50a) for the first conduit to pass through.
6. The wide-range constant-temperature bipolar pulsed conductance detector of claim 1, wherein: one end of the winding bar (7) is provided with an axial hole (70) and a first radial hole (71), the axial hole (70) is communicated with the first radial hole (71), and the other end of the winding bar is provided with a second radial through hole (72); the first conduit penetrates through the axial hole (70) from the first radial hole (71) and spirally winds on the winding rod (7) and then penetrates out from the second radial through hole (72).
7. The wide-range constant-temperature bipolar pulsed conductance detector of claim 3, wherein: the circuit board (8) is arranged in the first accommodating cavity, and the joint of the circuit board passes through the rear cover (2).
8. The wide-range constant-temperature bipolar pulsed conductance detector of claim 1, wherein: and heat-insulating sponges (9) are arranged on six inner wall surfaces of the first accommodating cavity, and wrap the heating body (5) by the heat-insulating sponges.
9. The wide-range constant-temperature bipolar pulsed conductance detector of claim 5, wherein: the number of the cavity temperature sensors (52) is two, one cavity temperature sensor (52) is fixedly arranged in the notch (50a), and the other cavity temperature sensor is fixedly arranged in the cavity where the conductivity detection module (10) is located and is positioned on one side of the second electrode simulator (10-2); the number of the heating body temperature sensors (51) is two, and the two heating body temperature sensors (51) are respectively arranged at two sides of the heating body (5) and are positioned inside the heating body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120675602.2U CN215066307U (en) | 2021-04-01 | 2021-04-01 | Wide-range constant-temperature bipolar pulse conductance detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120675602.2U CN215066307U (en) | 2021-04-01 | 2021-04-01 | Wide-range constant-temperature bipolar pulse conductance detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215066307U true CN215066307U (en) | 2021-12-07 |
Family
ID=79150599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120675602.2U Active CN215066307U (en) | 2021-04-01 | 2021-04-01 | Wide-range constant-temperature bipolar pulse conductance detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215066307U (en) |
-
2021
- 2021-04-01 CN CN202120675602.2U patent/CN215066307U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101655472B (en) | Constant temperature insulation system for thermal conductivity gas detection | |
| BR112012025736B1 (en) | relative pressure sensor | |
| US5777206A (en) | Method and measuring device for determining the water content of a gas | |
| JP2018180002A5 (en) | ||
| CN108803308A (en) | The mostly logical pond temperature control system of gas based on adaptive section PID control and method | |
| CN111505061A (en) | Gas sensor | |
| TW201831896A (en) | Electrical conductivity detector and ion chromatograph | |
| CN215066307U (en) | Wide-range constant-temperature bipolar pulse conductance detector | |
| WO2004046706A1 (en) | Gas detector | |
| EP0819936B1 (en) | A temperature compensated electrochemical gas sensor and method for closely tracking the temperature variations of a gas to be sensed | |
| CN112903748A (en) | Device and method for measuring contact thermal resistance and thermal conductivity coefficient of saturated soft soil interface | |
| CN113125516B (en) | Wide-range constant-temperature bipolar pulse conductance detector | |
| US4973395A (en) | Humidified high sensitivity oxygen detector | |
| US3616413A (en) | Solid electrolyte oxygen sensor | |
| RU2009115246A (en) | MOLECULAR EXCHANGE DEVICE | |
| US5053116A (en) | Device for humidifying gases without changing oxygen content | |
| JPS6311966Y2 (en) | ||
| CN104662422B (en) | Gas balance coil for providing gas calibration solution in real time | |
| CN107449654B (en) | Heating system for a measuring cell | |
| CN203232334U (en) | Constant temperature protective device of electrochemical sensor | |
| CN215895326U (en) | Nitrogen oxygen sensor heating device and nitrogen oxygen sensor | |
| US8110081B2 (en) | Oxygen sensor improvement method | |
| CN201488969U (en) | Thermostatic adiabatic system for heat-conducted gas detection | |
| US4140396A (en) | Measuring instrument | |
| JPS57197459A (en) | Oxygen density measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |