CN109187846A - Sealing sampling device for the detection of sulfur hexafluoride gas acidity - Google Patents

Sealing sampling device for the detection of sulfur hexafluoride gas acidity Download PDF

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Publication number
CN109187846A
CN109187846A CN201811011410.0A CN201811011410A CN109187846A CN 109187846 A CN109187846 A CN 109187846A CN 201811011410 A CN201811011410 A CN 201811011410A CN 109187846 A CN109187846 A CN 109187846A
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Prior art keywords
check valve
liquid
feed liquor
piston
cross bar
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CN201811011410.0A
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Chinese (zh)
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CN109187846B (en
Inventor
周健
徐军
邓福亮
孙刚
张岩松
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JIANGSU TRANSMISSION AND TRANSFORMATION CO Ltd
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JIANGSU TRANSMISSION AND TRANSFORMATION CO Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/16Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
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  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses the sealing sampling devices detected for sulfur hexafluoride gas acidity, wherein: including solution bottle body, solution bottle is set inside the body liquid storage space, solution bottle body is additionally provided with multi-purpose piston structure, multi-purpose piston structure includes piston, connecting rod, cross bar and handle, feed liquor branch pipe is equipped in piston structure, liquid branch pipe and main road pipe out, feed liquor check valve is installed on feed liquor branch pipe, feed liquor check valve seals feed liquor branch pipe, liquid check valve is installed out on liquid branch pipe out, liquid check valve seals liquid branch pipe out, cross bar lower surface is connect with one end of an extension spring, cross bar band piston generates resident pressure to piston solution below, the present invention have kind can simply have air be mixed into and do not have air be mixed between switch over, guarantee the advantages of concentration of sodium hydroxide solution of storage in the device is not affected by the external environment.

Description

Sealing sampling device for the detection of sulfur hexafluoride gas acidity
Technical field
The invention belongs to the technical fields of gas acidity detection device, and in particular to detect for sulfur hexafluoride gas acidity Sealing sampling device.
Background technique
Concentration of sodium hydroxide solution for the detection of sulfur hexafluoride gas acidity is fixed concentration standard solution, instrument operation The titration detection that a certain amount of solution participates in sulfur hexafluoride gas acidity, concentration value are extracted in Shi Huicong sodium hydroxide solution bottle Directly influence the accuracy of testing result.
Past is Conventional glass reagent bottle for the sodium hydroxide solution bottle of sulfur hexafluoride gas acidity detection, when drawing liquid only Be to protrude into a pipe in bottle, both without filter device, also do not extract solution under closed environment, easily cause it is following after Fruit:
1, the granule foreign in bottle in solution is pumped into instrument with liquid suction pipe and blocks valve;
2, carbon dioxide when open drawing liquid in air, the sour gas such as sulfur dioxide are easy to react with sodium hydroxide solution, make It is lower at solution concentration, to influence testing result.
But in test, it is hoped that there will be comparisons to have air to be mixed into and do not have the mixed sodium hydroxide solution of air sometimes The difference condition of reaction, the test for this demand, generally requires two covering devices, however, if using two covering devices, due to Sodium hydroxide solution can be assigned in two devices, by the placement of certain time, have no idea to guarantee in two devices Concentration of sodium hydroxide solution is consistent, and leads to this comparative test and inaccurate.
Summary of the invention
Simply there can be air the technical problem to be solved by the present invention for the above-mentioned state of the art is to provide a kind of Be mixed into and do not have air be mixed between switch over, guarantee to store concentration of sodium hydroxide solution in the device not by external environment shadow The loud sealing sampling device for the detection of sulfur hexafluoride gas acidity.
To realize the above-mentioned technical purpose, the technical scheme adopted by the invention is as follows:
For sulfur hexafluoride gas acidity detection sealing sampling device, in which: including solution bottle body, solution bottle body it is interior Portion is equipped with liquid storage space, and solution bottle body is additionally provided with multi-purpose piston structure, multi-purpose piston structure include piston, connecting rod, cross bar and Handle, piston are located in liquid storage space, and piston ridge and the sealing of solution bottle chamber body can slide up and down cooperation, connecting rod one end and Piston upper surface is fixedly connected, and small end is pierced by the middle part of solution bottle body and cross bar and is fixedly connected, and handle is fixed on cross bar, It is equipped with feed liquor branch pipe in piston structure, goes out liquid branch pipe and main road pipe, main road pipe is located in connecting rod, and main road pipe lower ending opening is in piston Lower surface, upper end are accessed in cross bar middle section, and feed liquor branch pipe is located at the front half section of cross bar, and feed liquor branch pipe is open at one end before cross bar End, can dock, the other end is connected to main road pipe upper end, and liquid branch pipe is located at the later half of cross bar out with sodium hydroxide solution injection device Section, liquid branch pipe is open at one end out can dock in cross bar rear end with sulfur hexafluoride gas acidity detection device, the other end and main road pipe Upper end is connected to, and feed liquor check valve is equipped on feed liquor branch pipe, feed liquor check valve seals feed liquor branch pipe, when ambient pressure and main road pipe When the difference of interior pressure is greater than feed liquor check valve opening threshold pressure, feed liquor check valve is opened, and liquid can enter from feed liquor check valve Main road pipe is equipped with out liquid check valve on liquid branch pipe out, and liquid check valve seals liquid branch pipe out, when in extraneous suction and main road pipe When the sum of pressure is greater than liquid check valve opening threshold pressure, liquid check valve is opened out, and liquid can flow out liquid list out from main road pipe To valve, cross bar lower surface is connect with one end of an extension spring, and the other end of extension spring is connect with solution bottle body housing, is drawn The trend that spring has retraction is stretched, so that cross bar band piston generates resident pressure to piston solution below, the resident pressure Threshold pressure is opened less than liquid check valve out, so that liquid check valve remains closed out when no external force is interfered, feed liquor check valve is beaten It opens threshold pressure and opens threshold pressure not less than liquid check valve is gone out.
To optimize above-mentioned technical proposal, the concrete measure taken further include:
Level sensor is installed, level sensor includes optoelectronic switch and photoelectricity isolation, light on above-mentioned solution bottle body Electric switch is fixed on solution bottle body upper surface, and photoelectricity isolation is fixed on cross bar, when piston moves down certain distance, cross bar And photoelectricity isolation moves down therewith, photoelectricity isolation enters in optoelectronic switch detection range, and optoelectronic switch outwardly issues letter Number.
Above-mentioned solution bottle body, connecting rod and cross bar is PTFE production.
Above-mentioned optoelectronic switch is connect with external control device signal, and control device is single-chip microcontroller or computer.
Above-mentioned piston outer periphery face is provided with several annular sealing strips, and every annular sealing strip is and in solution bottle body The cooperation of chamber palette.
Above-mentioned piston liquid storage space below is filled by sodium hydroxide solution completely, without air.
The present invention is detected for sulfur hexafluoride gas acidity, is a kind of to fill fixed concentration hydroxide with piston structure The closed container device of sodium solution.Present apparatus integral sealing, only feed liquor check valve and when two valve bodies of liquid check valve are opened out Just it is in communication with the outside.
The innovation of the invention consists in that installing an extension spring between solution bottle body and piston, piston is in elongation A slight pressure is generated to solution under the action of the tightening force of tension spring, guarantee when instrument extracts solution piston can it is automatic under Row will not be pumped into air from feed liquor branch pipe, in addition, feed liquor check valve, which opens threshold pressure, opens threshold value not less than liquid check valve is gone out Pressure, under the premise of thering is piston to generate a slight pressure to solution, as long as the suction at liquid check valve is in certain out In range, so that it may which while using liquid check valve opening, feed liquor check valve will not be opened, to there will not be gas in pipeline Into.
Therefore, the device of the invention is that there are two states: when liquid suction is in out when being extracted sodium hydroxide solution When in zone of reasonableness, only liquid check valve is opened out, and extraction is entirely sodium hydroxide solution, when liquid suction is excessive out, feed liquor Check valve is also opened, and extraction is sodium hydroxide solution and partial air, but whether being that state, due to there is depositing for piston , air all enters in liquid storage space without going past main road pipe, guarantee device in sodium hydroxide will not be by air pollution.
It installs the photoelectric sensor of one group of real-time monitoring sodium hydroxide solution liquid level on piston rod additional, has liquid level automatic alarm Function.When liquid level is lower, alarm, testing crew docks sodium hydroxide solution injection device with feed liquor check valve, then with Liquid check valve is sucked out in big suction, uses liquid check valve and feed liquor check valve is opened, extract one from sodium hydroxide solution injection device After fixed sodium hydroxide solution, guarantee liquid check valve and feed liquor check valve to be then shut off out, with portable drawing without air in pipeline Handle opens feed liquor check valve under the action of negative pressure in the device, by the sodium hydroxide in sodium hydroxide solution injection device Solution sucks liquid storage space, completes the supplement of sodium hydroxide solution.
Detailed description of the invention
Fig. 1 is structure diagram of the invention;
Fig. 2 is structure semi-cutaway of the invention;
Fig. 3 is the top view of Fig. 2.
Appended drawing reference therein are as follows: solution bottle body 1, liquid storage space 1a, multi-purpose piston structure 2, piston 21, connecting rod 22, Cross bar 23, feed liquor branch pipe 25, goes out liquid branch pipe 26, main road pipe 27, feed liquor check valve 3, goes out liquid check valve 4, extension spring handle 24 5, level sensor 6, optoelectronic switch 61, photoelectricity isolation 62.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
The sealing sampling device for the detection of sulfur hexafluoride gas acidity of the invention, in which: including solution bottle body 1, The inside of solution bottle body 1 is equipped with liquid storage space 1a, and solution bottle body 1 is additionally provided with multi-purpose piston structure 2, is mostly used piston structure 2 Including piston 21, connecting rod 22, cross bar 23 and handle 24, piston 21 is located in the 1a of liquid storage space, 21 edge of piston and solution bottle sheet 1 bore seal of body can slide up and down cooperation, and 22 one end of connecting rod is fixedly connected with 21 upper surface of piston, and 22 upper end of connecting rod is pierced by solution It is fixedly connected in the middle part of bottle body 1 and cross bar 23, handle 24 is fixed on cross bar 23, and feed liquor branch pipe 25 is equipped in piston structure 2, is gone out Liquid branch pipe 26 and main road pipe 27, main road pipe 27 are located in connecting rod 22, and 27 lower ending opening of main road pipe is in 21 lower surface of piston, upper termination Enter in 23 middle section of cross bar, feed liquor branch pipe 25 is located at the front half section of cross bar 23, and feed liquor branch pipe 25 is open at one end in 23 front end of cross bar, energy It is docked with sodium hydroxide solution injection device, the other end is connected to 27 upper end of main road pipe, after liquid branch pipe 26 is located at cross bar 23 out Half section, liquid branch pipe 26 is open at one end out can dock in 23 rear end of cross bar with sulfur hexafluoride gas acidity detection device, the other end with 27 upper end of main road pipe is connected to, and feed liquor check valve 3 is equipped on feed liquor branch pipe 25, feed liquor check valve 3 seals feed liquor branch pipe 25, when outer When the difference of pressure is greater than the opening threshold pressure of feed liquor check valve 3 in boundary's pressure and main road pipe 27, feed liquor check valve 3 is opened, liquid Main road pipe 27 can be entered from feed liquor check valve 3, liquid check valve 4 is installed out on liquid branch pipe 26 out, liquid check valve 4 seals liquid out Branch pipe 26, when the sum of pressure is greater than liquid check valve 4 and opens threshold pressure in extraneous suction and main road pipe 27, liquid check valve out 4 open, and liquid can flow out liquid check valve 4 out from main road pipe 27, and 23 lower surface of cross bar is connect with one end of an extension spring 5, draw The other end and 1 cage connection of solution bottle body of spring 5 are stretched, extension spring 5 has the trend of retraction, lives so that cross bar 23 drives It fills in 21 pairs of pistons solution below and generates resident pressure, which is less than liquid check valve 4 and opens threshold pressure, so that When no external force is interfered, liquid check valve 4 is remained closed out, and feed liquor check valve 3 is opened threshold pressure and opened not less than liquid check valve 4 is gone out Threshold pressure.
In embodiment, level sensor 6 is installed on solution bottle body 1, level sensor 6 includes optoelectronic switch 61 and light Electric isolation 62, optoelectronic switch 61 are fixed on 1 upper surface of solution bottle body, and photoelectricity isolation 62 is fixed on cross bar 23, work as work When plug 21 moves down certain distance, cross bar 23 and photoelectricity isolation 62 move down therewith, and photoelectricity isolation 62 enters optoelectronic switch 61 In detection range, optoelectronic switch 61 outwardly issues signal.
In embodiment, solution bottle body 1, connecting rod 22 and cross bar 23 are PTFE production.
In embodiment, optoelectronic switch 61 is connect with external control device signal, and control device is single-chip microcontroller or computer.
In embodiment, 21 outer peripheral surface of piston be provided with several annular sealing strips 21a, every annular sealing strip 21a with 1 bore seal close fit of solution bottle body.
In embodiment, the liquid storage space 1a below of piston 21 is filled by sodium hydroxide solution completely, without air.
The device of the invention usage mode is as follows:
When the sodium hydroxide solution for only needing concentration fixed carries out the detection of sulfur hexafluoride gas acidity, test equipment is with low-intensity Sodium hydroxide solution in draw-out device, feed liquor check valve 3 is in close state at this time, and liquid check valve 4 is in the open state out, When the sodium hydroxide solution amount in device is inadequate, piston 21 can be in low level, and photoelectricity isolation 62 is moved to optoelectronic switch 61 Between, causing the light of optoelectronic switch 61 to be blocked, triggers optoelectronic switch 61, optoelectronic switch 61 is issued by controller and is alarmed, Testing crew docks sodium hydroxide solution injection device with feed liquor check valve 3, and liquid check valve 4 then is sucked out with big suction, makes Liquid check valve 4 and feed liquor check valve 3 are opened out, after certain sodium hydroxide solution is extracted from sodium hydroxide solution injection device, Guarantee to be then shut off out liquid check valve 4 and feed liquor check valve 3 without air in pipeline, with portable drawing handle 24, keep feed liquor unidirectional Valve 3 is opened under the action of negative pressure in the device, and the sodium hydroxide solution sucking liquid storage in sodium hydroxide solution injection device is empty Between 1a, complete the supplement of sodium hydroxide solution.
It is mixed into and having carried out air without the mixed sodium hydroxide solution progress sulfur hexafluoride gas acidity detection pair of air When than test, the no mixed sodium hydroxide solution of air is extracted as described in upper section, has the mixed sodium hydroxide solution of air to extract Then need to improve the extraction suction to liquid check valve 4 out, so that feed liquor check valve 3 is opened, by enough suction to make sky Gas is inhaled into.The comparison that sulfur hexafluoride gas acidity is detected by two kinds of sodium hydroxide solutions, it is available between the two Detection difference.The present invention is in the advantage for doing this comparative test, test the sodium hydroxide solution used be it is completely the same, It is not in test preceding sodium hydroxide solution itself there is a possibility that difference.To improve the accuracy of test.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention Range.

Claims (6)

1. for the sealing sampling device of sulfur hexafluoride gas acidity detection, it is characterized in that: include solution bottle body (1), it is described The inside of solution bottle body (1) be equipped with liquid storage space (1a), the solution bottle body (1) is additionally provided with multi-purpose piston structure (2), the multi-purpose piston structure (2) includes piston (21), connecting rod (22), cross bar (23) and handle (24), the piston (21) it is located in liquid storage space (1a), piston (21) edge and solution bottle body (1) bore seal can slide up and down cooperation, described Connecting rod (22) one end be fixedly connected with piston (21) upper surface, connecting rod (22) upper end is pierced by solution bottle body (1) and cross bar (23) middle part is fixedly connected, and the handle (24) is fixed on cross bar (23), and feed liquor branch is equipped in the piston structure (2) It manages (25), go out liquid branch pipe (26) and main road pipe (27), the main road pipe (27) is located in connecting rod (22), main road pipe (27) lower end It is opened on piston (21) lower surface, upper end is accessed in cross bar (23) middle section, and the feed liquor branch pipe (25) is located at cross bar (23) Front half section, feed liquor branch pipe (25) is open at one end in cross bar (23) front end, can dock with sodium hydroxide solution injection device, the other end Be connected to main road pipe (27) upper end, liquid branch pipe (26) is located at the second half section of cross bar (23) out, out liquid branch pipe (26) it is open at one end in Cross bar (23) rear end can be docked with sulfur hexafluoride gas acidity detection device, and the other end is connected to main road pipe (27) upper end, described Feed liquor branch pipe (25) on be equipped with feed liquor check valve (3), the feed liquor check valve (3) seals feed liquor branch pipe (25), when outer When the difference of boundary's pressure and main road pipe (27) interior pressure is greater than feed liquor check valve (3) opening threshold pressure, the feed liquor check valve (3) it opens, liquid can enter main road pipe (27) from feed liquor check valve (3), and described going out on liquid branch pipe (26) is equipped with out liquid list To valve (4), go out liquid check valve (4) seal liquid branch pipe (26), when the sum of extraneous suction and main road pipe (27) interior pressure When opening threshold pressure greater than liquid check valve (4) out, described go out liquid check valve (4) are opened, and liquid can be flowed from main road pipe (27) Go out liquid check valve (4), the cross bar (23) lower surface connect with one end of an extension spring (5), extension spring (5) it is another One end and solution bottle body (1) cage connection, the extension spring (5) have the trend of retraction, so that cross bar (23) drives Piston (21) generates resident pressure to piston solution below, which is less than liquid check valve (4) and opens threshold pressure, So that liquid check valve (4) remains closed out when no external force is interfered, feed liquor check valve (3) opens threshold pressure not less than liquid out Check valve (4) opens threshold pressure.
2. the sealing sampling device according to claim 1 for the detection of sulfur hexafluoride gas acidity, it is characterized in that: described Solution bottle body (1) on be equipped with level sensor (6), the level sensor (6) includes optoelectronic switch (61) and light Electric isolation (62), the optoelectronic switch (61) are fixed on solution bottle body (1) upper surface, the photoelectricity isolation (62) Be fixed on cross bar (23), when piston (21) moves down certain distance, the cross bar (23) and photoelectricity isolation (62) with Move down, photoelectricity isolation (62) enter optoelectronic switch (61) detection range in, optoelectronic switch (61) outwardly issues signal.
3. the sealing sampling device according to claim 2 for the detection of sulfur hexafluoride gas acidity, it is characterized in that: described Solution bottle body (1), connecting rod (22) and cross bar (23) be PTFE production.
4. the sealing sampling device according to claim 3 for the detection of sulfur hexafluoride gas acidity, it is characterized in that: described Optoelectronic switch (61) connect with external control device signal, the control device be single-chip microcontroller or computer.
5. the sealing sampling device according to claim 4 for the detection of sulfur hexafluoride gas acidity, it is characterized in that: described Piston (21) outer peripheral surface be provided with several annular sealing strips (21a), every annular sealing strip (21a) with solution bottle body (1) bore seal close fit.
6. the sealing sampling device according to claim 5 for the detection of sulfur hexafluoride gas acidity, it is characterized in that: described Piston (21) liquid storage space (1a) below filled completely by sodium hydroxide solution, without air.
CN201811011410.0A 2018-08-31 2018-08-31 Sealed sample injection device for detecting acidity of sulfur hexafluoride gas Active CN109187846B (en)

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