Multi-parameter instrument

Abstract

According to the multi-parameter instrument, the bottom end of an instrument seat is connected to a measuring port, a first mounting groove is formed in the bottom end face of the instrument seat, a liquid level electrode and a temperature measuring element are arranged in the first mounting groove, and the liquid level electrode and the temperature measuring element both stretch out of the first mounting groove from the bottom and stretch into the inner side of the measuring port; the top end face of the instrument seat is located on the outer side of the measuring opening and provided with a second installation groove located above the first installation groove, and the first installation groove and the second installation groove are partially overlapped in the horizontal direction. A pressure measuring core body is mounted in the second mounting groove, and the second mounting groove is communicated with a pressure taking channel located on one side of the first mounting groove in the horizontal direction; the instrument integrator is located on the outer side of the instrument seat, so that the radial section structure of the whole instrument seat is fully reduced, the instrument seat can integrate the functions of measuring multiple key parameters such as temperature, liquid level and pressure on the measurement port size which is minimum to DN25, and the sealing performance between the instrument body and the measurement port is easier to improve.

Description

Technical Field

[0001] The invention relates to the field of instrument equipment, in particular to a multi-parameter instrument. Background Art

[0002] Electrolyte is the raw material with the highest value, the most critical technical formula and the largest usage in the field of new energy batteries. Electrolyte is highly corrosive, highly volatile, highly hygroscopic and highly oxidizing. Under no circumstances can it come into contact with water vapor and oxygen in the air. In addition, the actual users of electrolyte are battery manufacturers in various places. This requires electrolyte manufacturers to monitor various parameters of the electrolyte during storage and long-distance transportation of the electrolyte, and ensure that the electrolyte transportation containers are corrosion-resistant, oxidation-resistant and highly sealed.

[0003] The container for electrolyte storage and long-distance transportation is a customized ton barrel. The ton barrel itself can easily seal its barrel body and interface through a multi-layer welding structure and a polytetrafluoroethylene gasket to achieve corrosion resistance, oxidation resistance, and high sealing, which puts high demands on the multi-parameter instrument for monitoring. When the interface is used as a measuring port, in order to improve the sealing at the measuring port, the structural dimensions at the measuring port should be minimized. Most of the existing electronic multi-parameter instruments have achieved high-integration functions, but have not optimized their specific structural dimensions to the greatest extent, resulting in the electronic multi-parameter instrument structure being too large and can only match measuring ports of the same structural dimensions. In addition, the existing electronic multi-parameter instruments have great differences in reliability and sealing requirements, and the service life of the instrument is often very short. The instrument will eventually fail to seal due to corrosion or vibration, resulting in the loss of high-value electrolyte. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-parameter instrument to solve the problems existing in the prior art, to fully reduce the radial cross-sectional structure of the entire instrument base, and to enable the instrument base to integrate the measurement functions of multiple key parameters such as temperature, liquid level, pressure, etc. on a measuring port size as small as DN25, and to more easily improve the sealing between the instrument body and the measuring port.

[0005] To achieve the above object, the present invention provides the following solutions: The present invention provides a multi-parameter instrument, including an instrument stand and an instrument integrator;

[0006] The bottom end of the instrument base is detachably connected to the measuring port of the container of the liquid to be measured, and a first mounting groove is provided on the bottom end surface of the instrument base, and a liquid level electrode and a temperature measuring element are built into the first mounting groove, and the liquid level electrode and the temperature measuring element both extend out of the first mounting groove from the bottom and extend into the inner side of the measuring port;

[0007] The top surface of the instrument base is located outside the measuring port, and is provided with a second mounting groove located above the first mounting groove, and the first mounting groove and the second mounting groove partially overlap in the horizontal direction; a pressure measuring core is installed in the second mounting groove, and the second mounting groove is connected to a pressure taking channel located on one side of the first mounting groove in the horizontal direction, and the pressure taking channel extends in the vertical direction, and its top end is connected to the bottom end position of the second mounting groove, and its bottom end passes through the bottom end surface of the instrument base from below;

[0008] The instrument integrator is located outside the instrument base and is electrically connected to the liquid level electrode, the temperature measuring element and the pressure measuring core.

[0009] Preferably, a wire lead-out channel is provided in the instrument base and is located on one side of the second mounting groove in the horizontal direction. The wire lead-out channel extends in the vertical direction, and its bottom end is connected to the top position of the first mounting groove, and its top end passes through the top surface of the instrument base from above.

[0010] Preferably, the instrument integrator comprises an instrument box, a third mounting groove is formed on the instrument box, and the top end portion of the instrument base is threadedly connected in the third mounting groove.

[0011] Preferably, the pressure measuring core abuts against the bottom of the third mounting groove, and an annular gasket is provided between the bottom end surface of the pressure measuring core and the bottom of the second mounting groove, and the annular gasket surrounds the outer peripheral side of the pressure taking channel.

[0012] Preferably, a first sealing ring is sleeved on the outer peripheral wall of the pressure measuring core, and the first sealing ring is squeezed between the outer peripheral wall of the pressure measuring core and the inner peripheral wall of the second mounting groove.

[0013] Preferably, the liquid level electrode is a straight tube structure with an open top, the top of the liquid level electrode is embedded in the first installation groove, the bottom of the liquid level electrode extends from the bottom of the instrument base, and the temperature measuring element is installed inside the liquid level electrode.

[0014] Preferably, a sleeve is coaxially sleeved on the outer circumferential wall of the liquid level electrode, the top position of the sleeve abuts between the outer circumferential wall of the liquid level electrode and the inner circumferential wall of the first mounting groove, and an annular gap is provided between the outer circumferential wall at the bottom position of the sleeve and the inner circumferential wall of the first mounting groove, and a locking nut that cooperates with the thread of the first mounting groove is embedded in the annular gap.

[0015] Preferably, the top end of the locking nut is connected to a metal ring, the outer peripheral wall of the sleeve is provided with a step structure located at the top end of the annular spacer, and the metal ring is squeezed between the step structure and the inner peripheral wall of the first mounting groove.

[0016] Preferably, the liquid level electrode is coaxially sleeved with a step ring protruding from its outer peripheral wall, the top end of the sleeve is connected to a first sleeve surrounding the outer peripheral side of the liquid level electrode, and the inner peripheral edge of the top end of the first sleeve is provided with an annular notch that fits with the step ring.

[0017] Preferably, the top end of the step ring is connected to a second sleeve sleeved on the outer peripheral wall of the liquid level electrode, the top end of the second sleeve is connected to a second sealing ring, the first mounting groove is provided with an inclined surface structure located above the second sleeve, and the second sealing ring is squeezed between the inclined surface structure and the outer peripheral wall of the liquid level electrode;

[0018] A gasket tube is butt-jointed to the top end of the second sealing ring, and the gasket tube includes a first annular portion and a second annular portion connected to each other, the first annular portion abuts between the end surface of the liquid level electrode and the bottom of the first mounting groove, and the second annular portion abuts between the outer peripheral wall of the liquid level electrode and the inner peripheral wall of the first mounting groove.

[0019] Compared with the prior art, the present invention has achieved the following technical effects:

[0020] In the multi-parameter instrument disclosed in the present invention, the first mounting groove and the second mounting groove provided on the instrument base are spaced apart in the vertical direction and partially overlapped in the horizontal direction, so as to fully reduce the radial cross-sectional structure of the entire instrument base, and enable the instrument base to integrate the measurement functions of multiple key parameters such as temperature, liquid level, pressure, etc. in a measuring port size as small as DN25. Furthermore, in the subsequent sealing structure setting, since the structure of the instrument base is fully reduced to match the measuring port with a smaller structural size, the structural size of the position to be sealed is smaller, and the pressure achieved during sealing is greater, so that it is easier to improve the sealing between the instrument body and the measuring port. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A cross-sectional view of a part of the structure of the present invention;

[0023] Among them, 1-instrument integrator, 2-second mounting groove, 3-first sealing ring, 4-annular gasket, 5-instrument base, 6-pressure channel, 7-connecting flange, 8-temperature measuring element, 9-liquid level electrode, 10-sleeve, 11-locking nut, 12-metal ring, 13-step structure, 14-first socket, 15-second socket, 16-second sealing ring, 17-inclined structure, 18-gasket, 19-wire lead-out channel, 20-first mounting groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a multi-parameter instrument to solve the problems existing in the prior art, to fully reduce the radial cross-sectional structure of the entire instrument base, and to enable the instrument base to integrate the measurement functions of multiple key parameters such as temperature, liquid level, pressure, etc. on a measuring port size as small as DN25, and to more easily improve the sealing between the instrument body and the measuring port.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1As shown, this embodiment provides a multi-parameter instrument, including an instrument base 5 and an instrument integrator 1; the bottom end of the instrument base 5 is detachably connected to the measuring port of the container of the liquid to be measured, wherein the measuring port is preferably an interface of a ton barrel for turnover storage and transportation of solvents, and is opened at the top position of the ton barrel, and a first mounting groove 20 is opened on the bottom end surface of the instrument base 5, and the first mounting groove 20 has a liquid level electrode 9 and a temperature measuring element 8 built in, and the liquid level electrode 9 and the temperature measuring element 8 both extend from the bottom of the first mounting groove 20 and extend into the inner side of the measuring port, preferably, the temperature measuring element 8 is a temperature measuring probe based on a platinum resistance device, and the liquid The level electrode 9 is made of stainless steel, and the part of the level electrode 9 installed in the first installation groove 20 is insulated and not conductive with the instrument base 5. After the bottom end of the level electrode 9 extends into the inner side of the measuring port and contacts with the solvent to be measured, the solvent to be measured conducts the level electrode 9, the container and the instrument base 5, and the level sensor is activated, indicating that there is the solvent to be measured in the container; the top surface of the instrument base 5 is located outside the measuring port, and a second installation groove 2 is provided above the first installation groove 20, and the first installation groove 20 and the second installation groove 2 partially overlap in the horizontal direction, so that the first installation groove 20 and the second installation groove 2 overlap in the horizontal direction. In some usage scenarios, the first mounting groove 20 and the second mounting groove 2 can also be coaxially arranged; a pressure measuring core is installed in the second mounting groove 2, and the second mounting groove 2 is connected to a pressure taking channel 6 located on one side of the first mounting groove 20 in the horizontal direction. The pressure taking channel 6 extends in the vertical direction, and its top end is connected to the bottom end position of the second mounting groove 2, and its bottom end passes through the bottom end surface of the instrument seat 5 from below; the instrument integrator 1 is located outside the instrument seat 5, and is electrically connected to the liquid level electrode 9, the temperature measuring element 8 and the pressure measuring core. In the multi-parameter instrument disclosed in the present invention, The first mounting groove 20 and the second mounting groove 2 provided on the instrument base 5 are spaced apart in the vertical direction and partially overlapped in the horizontal direction, so as to fully reduce the radial cross-sectional structure of the entire instrument base 5, and enable the instrument base 5 to integrate the measurement functions of multiple key parameters such as temperature, liquid level, and pressure in a measuring port size as small as DN25. In the subsequent sealing structure setting, since the structure of the instrument base 5 is fully reduced to match the measuring port with a smaller structural size, the structural size of the position to be sealed is smaller, and the pressure achieved during sealing is greater, so that it is easier to improve the sealing between the instrument body and the measuring port.

[0028] As a preferred embodiment of the present invention, in order to realize that the bottom end of the meter stand 5 can be detachably connected to the measuring port of the container of the liquid to be measured, the peripheral part of the bottom end surface of the meter stand 5 is flatly docked at the end surface of the measuring port, and the outer ring of the bottom end of the meter stand 5 is movably sleeved with a connecting flange 7, and the bottom position of the connecting flange 7 is threadedly sleeved on the outer peripheral side of the measuring port, and the first installation groove 20 is located on the inner peripheral side of the measuring port. A sealing gasket is connected between the bottom end surface of the meter stand 5 and the end surface of the measuring port, and the sealing gasket surrounds the first installation groove 20 and the outer peripheral side of the measuring port. Alternatively, a threaded structure is provided between the outer peripheral wall of the bottom end of the meter stand 5 and the inner peripheral wall of the measuring port, so that the meter stand 5 is threadedly inserted into the measuring port.

[0029] In a specific embodiment, the pressure measuring core, the liquid level electrode 9 and the temperature measuring element 8 all communicate signals with the instrument integrator 1 by wireless transmission or by wire connection. Specifically, when wire connection is adopted, a wire lead-out channel 19 is preferably opened in the instrument base 5 and is located on one side of the second mounting slot 2 in the horizontal direction. The wire lead-out channel 19 extends in the vertical direction, and its bottom end is connected to the top position of the first mounting slot 20, and its top end passes through the top surface of the instrument base 5 from above. The wires of the temperature measuring element 8 and the wires of the liquid level electrode 9 are led out from the wire lead-out channel 19, and the wires of the pressure measuring core are led out of the second mounting slot 2 from above. The wires of the pressure measuring core, the wires of the liquid level electrode 9 and the wires of the temperature measuring element 8 are all connected to the PCB circuit board assembly of the instrument integrator 1.

[0030] Preferably, the wire lead-out channel 19 is filled with potting glue to seal the wire lead-out channel 19. The potting glue can be epoxy resin potting glue, polyurethane potting glue or silicone potting glue to further prevent the solvent to be detected from overflowing the wire lead-out channel 19 from bottom to top, and the cross-section of the wire lead-out channel 19 along its axial direction is a dumbbell-shaped structure to ensure that after the potting glue is formed in the wire lead-out channel 19, it can be tightly embedded in the wire lead-out channel 19 to avoid displacement during subsequent use. Preferably, the middle part of the wire lead-out channel 19 in the vertical direction is a straight tubular structure, and its two end parts are tapered tubular structures. The radial cross-section of the top structure of the wire lead-out channel 19 gradually decreases from bottom to top, and the radial cross-section of the bottom structure of the wire lead-out channel 19 gradually increases from top to bottom.

[0031] In a specific embodiment, the instrument integrator 1 includes an instrument box, which is preferably an explosion-proof instrument box. The PCB circuit board assembly and the battery are built into the instrument box. The measurement information of various measuring elements can be converted into visible temperature, pressure, and liquid level values ​​through the PCB circuit board assembly, and the PCB circuit board assembly is preferably provided with a communication module to achieve wireless transmission through the communication module. A third mounting groove is provided on the instrument box, and the top part of the instrument base 5 is threadedly connected in the third mounting groove to achieve a detachable connection between the instrument box and the instrument base 5. Preferably, an annular notch is provided at the inner peripheral edge of the bottom end of the inner circumferential wall of the third mounting groove, and a sealing ring is coaxially embedded in the annular notch. The sealing ring is preferably a flexible sealing ring, such as a rubber sealing ring, and the top position of the instrument base 5 is coaxially sleeved with an annular boss protruding from its outer circumferential wall, and the top surface of the annular boss abuts against the bottom end of the sealing ring.

[0032] In a specific embodiment, a multi-layer sealing and anti-corrosion structure is provided between the first installation groove 20 and the liquid level electrode 9, between the first installation groove 20 and the temperature measuring element 8, and between the second installation groove 2 and the pressure measuring core to prevent the solvent to be measured from entering the instrument base 5 from above and causing corrosion to the measuring elements, etc.

[0033] In a specific embodiment, the pressure measuring core abuts against the bottom of the third mounting groove, and an annular gasket 4 is provided between the bottom end face of the pressure measuring core and the bottom of the second mounting groove 2. Preferably, the annular gasket 4 is made of polytetrafluoroethylene, and the annular gasket 4 surrounds the outer peripheral side of the pressure taking channel 6. Then, when the top structure of the instrument seat 5 is threadedly connected in the third mounting groove, the pressure measuring core is pressed downward through the bottom of the third mounting groove, and the annular gasket 4 is pressed through the pressure measuring core, so that the annular gasket 4 is fully expanded and sealed on the outer peripheral side of the pressure taking channel 6 to fully prevent the solvent to be measured from eroding the pressure measuring core through the pressure taking channel 6. Preferably, the outer shape structure of the pressure measuring core matches the inner cavity structure of the second mounting groove 2, and the end faces on both sides of the annular gasket 4 abut against the outer peripheral edge of the bottom of the second mounting groove 2 and the outer peripheral part of the bottom end face of the pressure measuring core, and the outer peripheral edge of the annular gasket 4 is squeezed on the inner peripheral wall of the second mounting groove 2.

[0034] In a specific embodiment, a first sealing ring 3 is sleeved on the outer peripheral wall of the pressure measuring core body. Preferably, the first sealing ring 3 is an anti-swelling rubber sealing ring. The first sealing ring 3 is squeezed between the outer peripheral wall of the pressure measuring core body and the inner peripheral wall of the second mounting groove 2. The outer peripheral wall of the pressure measuring core body and the inner peripheral wall of the second mounting groove 2 are sealed by the first sealing ring 3. The cooperation of the first sealing ring 3 and the annular gasket 4 forms a multi-pass sealing and anti-corrosion mechanism between the pressure measuring core body and the second mounting groove 2. The structure is simple and the material selection is convenient to fully reduce the use cost. Preferably, an annular groove is coaxially opened on the outer peripheral wall of the pressure measuring core body. The first sealing ring 3 is embedded in the annular groove, and its outer peripheral edge protrudes from the notch of the annular groove and abuts against the inner peripheral wall of the second mounting groove 2.

[0035] In a specific embodiment, the liquid level electrode 9 is in a straight tube structure with an open top, the top of the liquid level electrode 9 is embedded in the first installation groove 20, the bottom of the liquid level electrode 9 extends from the bottom to the bottom of the instrument base 5, and the temperature measuring element 8 is installed inside the liquid level electrode 9. In terms of orientation, the temperature measuring element 8 is arranged inside the liquid level electrode 9, thereby avoiding the liquid level electrode 9 and the temperature measuring element 8 being arranged side by side, resulting in the liquid level electrode 9 and the temperature measuring element 8 occupying too much radial space of the instrument base 5, thereby resulting in the structure of the instrument base 5 being too large. And the preferred temperature measuring element 8 is in a vertically extending rod-shaped structure, and a flexible sealing ring for coaxially fixing the temperature measuring element 8 is pressed between the top of the temperature measuring element 8 and the liquid level electrode 9, and the flexible sealing ring is coaxially plugged into the inside of the liquid level electrode 9, and the temperature measuring element 8 is coaxially plugged into the inside of the flexible sealing ring, and in order to improve the accuracy of temperature measurement, the bottom end of the temperature measuring element 8 is preferably attached to the bottom wall of the liquid level electrode 9.

[0036] In a specific embodiment, a sleeve 10 is coaxially sleeved on the outer circumferential wall of the liquid level electrode 9. Preferably, the sleeve 10 is made of polytetrafluoroethylene. The top position of the sleeve 10 abuts between the outer circumferential wall of the liquid level electrode 9 and the inner circumferential wall of the first mounting groove 20. There is an annular gap between the outer circumferential wall at the bottom position of the sleeve 10 and the inner circumferential wall of the first mounting groove 20. A locking nut 11 threadedly matched with the first mounting groove 20 is embedded in the annular gap, and the locking nut 11 is insulated between the sleeve 10 and the liquid level electrode 9, so that the locking nut 11 is screwed into the annular gap and squeezes the outer circumferential wall of the sleeve 10 to make it tightly sleeved on the liquid level electrode 9, thereby completing the fixation of the liquid level electrode 9, and a seal is formed between the liquid level electrode 9 and the inner circumferential wall of the first mounting groove 20 through the locking nut 11 and the sleeve 10.

[0037] Preferably, a threaded structure is provided between the outer peripheral wall at the top of the locking nut 11 and the inner peripheral wall at the bottom of the first mounting groove 20, and an annular flange protruding from the outer peripheral wall is provided at the bottom of the locking nut 11, and the annular flange abuts against the bottom end surface of the instrument base 5 after the locking nut 11 is rotated into place, completing the assembly of the locking nut 11 and the instrument base 5. The locking nut 11 is made of corrosion-resistant metal material.

[0038] In a specific embodiment, the top end of the locking nut 11 is connected to a metal ring 12, and the outer peripheral wall of the sleeve 10 is provided with a step structure 13 located at the top end of the annular interval. The metal ring 12 is squeezed between the step structure 13 and the inner peripheral wall of the first installation groove 20. Specifically, when the locking nut 11 is screwed into the annular interval, its top end pushes the metal ring 12 upward and moves along the step structure 13 until it is embedded and pressed against between the outer peripheral wall of the sleeve 10 and the inner peripheral wall of the first installation groove 20, completing the fixing of the sleeve 10 and the liquid level electrode 9, and simultaneously completing the sealing between the liquid level electrode 9 and the inner peripheral wall of the first installation groove 20. The metal ring 12 is preferably made of corrosion-resistant metal material.

[0039] In a specific embodiment, the liquid level electrode 9 is coaxially sleeved with a step ring protruding from its outer peripheral wall, and the top end of the sleeve 10 is connected to a first sleeve 14 surrounding the outer peripheral side of the liquid level electrode 9. Preferably, the first sleeve 14 is made of plastic, and the inner edge of the top end of the first sleeve 14 is provided with an annular notch that fits with the step ring. The locking nut 11 is screwed into the annular spacer, and the partial structure of the sleeve 10 located above the annular spacer is pushed from above, thereby pushing the first sleeve 14 so that it can push the liquid level electrode 9 upward into place through the step ring.

[0040] In a specific embodiment, the top end of the step ring is connected to a second socket 15 sleeved on the outer peripheral wall of the liquid level electrode 9, and the second socket 15 is made of plastic. Preferably, an annular space is provided between the outer peripheral edge of the step ring and the inner peripheral wall of the first mounting groove 20 for the top end portion of the first socket 14 to extend from above. The top end surface of the portion of the first socket 14 extending from above through the annular space is flush with the top end surface of the step ring to jointly support the second socket 15. The top end of the second socket 15 is connected to a second sealing ring 16, and the second sealing ring 16 is preferably a rubber sealing ring. The first mounting groove 20 is provided with an inclined surface structure 17 located above the second socket 15, and the second sealing ring 16 is squeezed between the inclined surface structure 17 and the outer peripheral wall of the liquid level electrode 9; the top of the second sealing ring 16 is connected to a gasket 18, and preferably, the gasket 18 is made of polytetrafluoroethylene, and the gasket 18 includes a first annular portion and a second annular portion connected to each other. The first annular portion abuts between the end face of the liquid level electrode 9 and the bottom of the first mounting groove 20, and the second annular portion abuts between the outer peripheral wall of the liquid level electrode 9 and the inner peripheral wall of the first mounting groove 20. Then, under the action of the locking nut 11, the sleeve 10 moves the first socket 14 from the top, and the first socket 14 simultaneously pushes the step ring and the second socket 15, so that the top end face of the liquid level electrode 9 directly abuts against the bottom end face of the first annular portion, and the second socket 15 abuts against the bottom edge of the second annular portion through the second sealing ring 16, so as to compress the gasket 18 as a whole, so that the amount of compression is about 0.2 mm. It should be noted that since the second sealing ring 16 is a flexible structure such as a rubber sealing ring, and by providing a ramp structure 17, the second sealing ring 16 is only deformed at the ramp structure 17, so as to avoid excessive squeezing of the gasket 18 by the liquid level electrode 9 and the second sealing ring 16, so that it can be limited to the required deformation.

[0041] In summary, the present invention discloses a multi-parameter instrument, which realizes a small-caliber multi-parameter instrument structure, is used on the interface of a small structure, and integrates the measurement functions of multiple key parameters such as temperature, liquid level, pressure, etc., and economically arranges at least two layers of sealing and anti-corrosion mechanisms at the first mounting groove 20 and the second mounting groove 2, thereby reliably realizing multi-parameter detection of highly corrosive, highly volatile, highly hygroscopic, and highly oxidizing liquid storage and transportation containers in a limited space.

[0042] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0043] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0044] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A multi-parameter instrument, characterized in that: Including instrument stand and instrument integrator; The bottom end of the instrument base is detachably connected to the measuring port of the container of the liquid to be measured, and a first mounting groove is provided on the bottom end surface of the instrument base, and a liquid level electrode and a temperature measuring element are built into the first mounting groove, and the liquid level electrode and the temperature measuring element both extend out of the first mounting groove from the bottom and extend into the inner side of the measuring port; The top surface of the instrument base is located outside the measuring port, and is provided with a second mounting groove located above the first mounting groove, and the first mounting groove and the second mounting groove partially overlap in the horizontal direction; a pressure measuring core is installed in the second mounting groove, and the second mounting groove is connected to a pressure taking channel located on one side of the first mounting groove in the horizontal direction, and the pressure taking channel extends in the vertical direction, and its top end is connected to the bottom end position of the second mounting groove, and its bottom end passes through the bottom end surface of the instrument base from below; The instrument integrator is located outside the instrument base and is electrically connected to the liquid level electrode, the temperature measuring element and the pressure measuring core.

2. The multi-parameter instrument according to claim 1, characterized in that: A wire lead-out channel is provided in the instrument base and is located on one side of the second mounting groove in the horizontal direction. The wire lead-out channel extends in the vertical direction, with its bottom end connected to the top position of the first mounting groove and its top end passing through the top surface of the instrument base from above.

3. The multi-parameter instrument according to claim 1 or 2, characterized in that: The instrument integrator comprises an instrument box, a third mounting groove is formed on the instrument box, and the top end portion of the instrument base is threadedly connected in the third mounting groove.

4. The multi-parameter instrument according to claim 3, characterized in that: The pressure measuring core body abuts against the bottom of the third mounting groove, and an annular gasket is provided between the bottom end surface of the pressure measuring core body and the bottom of the second mounting groove, and the annular gasket surrounds the outer peripheral side of the pressure taking channel.

5. The multi-parameter instrument according to claim 4, characterized in that: A first sealing ring is sleeved on the outer peripheral wall of the pressure measuring core body, and the first sealing ring is squeezed between the outer peripheral wall of the pressure measuring core body and the inner peripheral wall of the second installation groove.

6. The multi-parameter instrument according to claim 5, characterized in that: The liquid level electrode is in a straight tube structure with an open top. The top of the liquid level electrode is embedded in the first installation groove. The bottom of the liquid level electrode extends out of the bottom of the instrument base. The temperature measuring element is installed inside the liquid level electrode.

7. The multi-parameter instrument according to claim 6, characterized in that: A sleeve is coaxially sleeved on the outer circumferential wall of the liquid level electrode, and the sleeve abuts between the outer circumferential wall of the liquid level electrode and the inner circumferential wall of the first mounting groove. An annular gap is provided between the outer circumferential wall at the bottom position of the sleeve and the inner circumferential wall of the first mounting groove, and a locking nut that cooperates with the thread of the first mounting groove is embedded in the annular gap.

8. The multi-parameter instrument according to claim 7, characterized in that: The top end of the locking nut is connected to a metal ring, the outer peripheral wall of the sleeve is provided with a step structure located at the top end of the annular spacer, and the metal ring is squeezed between the step structure and the inner peripheral wall of the first mounting groove.

9. The multi-parameter instrument according to claim 8, characterized in that: The liquid level electrode is coaxially sleeved with a step ring protruding from its outer peripheral wall, the top end of the sleeve is connected to a first sleeve surrounding the outer peripheral side of the liquid level electrode, and the inner peripheral edge of the top end of the first sleeve is provided with an annular notch that fits with the step ring.

10. The multi-parameter instrument according to claim 9, characterized in that: The top end of the step ring is connected to a second sleeve sleeved on the outer peripheral wall of the liquid level electrode, the top end of the second sleeve is connected to a second sealing ring, the first mounting groove is provided with an inclined surface structure located above the second sleeve, and the second sealing ring is squeezed between the inclined surface structure and the outer peripheral wall of the liquid level electrode; A gasket tube is butt-jointed to the top end of the second sealing ring, and the gasket tube includes a first annular portion and a second annular portion connected to each other, the first annular portion abuts between the end surface of the liquid level electrode and the bottom of the first mounting groove, and the second annular portion abuts between the outer peripheral wall of the liquid level electrode and the inner peripheral wall of the first mounting groove.

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