CN206072511U - Valve stuffing box leakage rate detection by quantitative assay device - Google Patents

Valve stuffing box leakage rate detection by quantitative assay device Download PDF

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Publication number
CN206072511U
CN206072511U CN201620835294.4U CN201620835294U CN206072511U CN 206072511 U CN206072511 U CN 206072511U CN 201620835294 U CN201620835294 U CN 201620835294U CN 206072511 U CN206072511 U CN 206072511U
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CN
China
Prior art keywords
filler
opening
casing
valve
stuffing box
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Active
Application number
CN201620835294.4U
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Chinese (zh)
Inventor
戴文柏
王邦捷
卓桂朝
高斌文
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SHENGBOLAI VALVE CO Ltd
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SHENGBOLAI VALVE CO Ltd
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Priority to CN201620835294.4U priority Critical patent/CN206072511U/en
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Publication of CN206072511U publication Critical patent/CN206072511U/en
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Abstract

The utility model discloses valve stuffing box leakage rate detection by quantitative assay device;The assay device includes:One stuffing-box, described filler letter includes filler casing, filler pressing sleeve and hold-down grid, filler casing includes left opening and right opening, and the inside of filler casing is provided with the packing cavity and air chamber of mutual conduction, and filler casing is provided with the detection mouth through packing cavity;Left opening is sealed by blank flange, and blank flange is provided with the air inlet of air chamber conducting or gas outlet;Filler pressing sleeve is arranged between filler casing and hold-down grid, and hold-down grid is fixedly connected with filler casing by bolt;One end of valve rod is stretched into from left opening, stretches out from right opening, and passes through filler pressing sleeve and hold-down grid;If dried layer filler is provided between valve rod and packing cavity, between every layer of filler, spacer ring is equipped with.This utility model simple structure, easy to use, certainty of measurement are high.

Description

Valve stuffing box leakage rate detection by quantitative assay device
Technical field
This utility model is related to leakage rate assay device, more particularly to valve stuffing box leakage rate detection by quantitative test dress Put.
Background technology
Existing valve stuffing-box is susceptible to leakage problem when in use, reduces the service life of valve.
Utility model content
The technical problems to be solved in the utility model is to provide valve stuffing box leakage rate detection by quantitative assay device.
To reach above-mentioned purpose, the technical solution of the utility model is as follows:
Valve stuffing box leakage rate detection by quantitative assay device;The assay device includes:
One stuffing-box, described filler letter include:
One filler casing;
Described filler casing includes left opening and right opening, and the inside of filler casing is provided with the packing cavity of mutual conduction And the junction of air chamber, described filler chamber and air chamber is provided with a boss;Described filler casing is provided with through packing cavity Detection mouth, detection mouth are sealed by plug screw;The left opening is sealed by blank flange, on the blank flange It is provided with air inlet or the gas outlet of air chamber conducting;
One filler pressing sleeve;
One hold-down grid, filler pressing sleeve are arranged between filler casing and hold-down grid, and hold-down grid passes through bolt and fills out Hopper body is fixedly connected;
One valve rod, one end of the valve rod are stretched into from left opening, are stretched out from right opening, and through filler pressing sleeve and are filled out Material pressing plate;The other end of the valve rod is located in left opening, is fastened in left opening by the annular boss of valve stem end; If dried layer filler is provided between the valve rod and packing cavity, between every layer of filler, spacer ring is equipped with.
In one embodiment of the present utility model, between the annular boss and stuffing box contact level, anti-attrition is provided with Pad.
In one embodiment of the present utility model, between the plug screw and detection mouth, seal washer is provided with.
In one embodiment of the present utility model, the blank flange passes through stud and nut and fixes company with filler casing Connect, between the contact surface of blank flange and filler casing, be provided with pad.
In one embodiment of the present utility model, the assay device also includes a heater, the heater It is arranged on the outer wall of filler casing air chamber.
In one embodiment of the present utility model, the assay device also includes a thermocouple, and the thermocouple is arranged On the outer wall of filler casing air chamber.
In one embodiment of the present utility model, the heater is electric blanket or heating coil.
By above-mentioned technical proposal, the beneficial effects of the utility model are:
It is this utility model simple structure, easy to use, quickly can accurately measure the leakage rate of stuffing-box.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is this utility model structural representation;
Fig. 2 is Cleaning Principle Fig. 1;
Fig. 3 is Cleaning Principle Fig. 2;
Fig. 4 is Cleaning Principle Fig. 3;
Numeral and the corresponding component title represented by letter in figure:
10th, valve rod 11, annular boss 12, anti-wear gasket 20, filler casing 21, packing cavity 22, air chamber 23, boss 24th, detection mouth 25, plug screw 26, seal washer 30, filler pressing sleeve 40, hold-down grid 50, bolt 60, blank flange 61, Air inlet or gas outlet 62, stud 63, nut 64, pad 70, filler 80, spacer ring 90, heater 100, thermocouple.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that this utility model is realized are easy to understand, under Face combines and is specifically illustrating, and this utility model is expanded on further.
Referring to shown in Fig. 1 to Fig. 4, the utility model discloses valve stuffing box leakage rate detection by quantitative assay device;Examination Experiment device includes the valve rod 10 that stuffing-box and one end are arranged in stuffing-box;Stuffing-box includes filler casing 20, filler pressing sleeve 30 and hold-down grid 40, filler pressing sleeve 30 is arranged between filler casing 20 and hold-down grid 40, and hold-down grid 40 passes through spiral shell Bolt 50 is fixedly connected with filler casing 20;Filler casing 20 includes left opening and right opening, and the inside of filler casing 20 sets The junction for having the packing cavity 21 and air chamber 22 of mutual conduction, packing cavity 21 and air chamber 22 is provided with a boss 23;Stuffing box Body 20 is provided with three detection mouths 24 through packing cavity, and detection mouth 24 is sealed by plug screw 25;Left opening is by blind Plate flange 60 is sealed, and blank flange 60 is provided with the air inlet of the conducting of an air chamber 22 or gas outlet 61;One end of valve rod 10 Stretch into from left opening, stretch out from right opening, and pass through filler pressing sleeve 30 and hold-down grid 40;The other end of valve rod 10 is located at In left opening, it is fastened in left opening by the annular boss 11 of valve stem end;It is provided between valve rod 10 and packing cavity 21 If dried layer filler 70, spacer ring 80 between every layer of filler, is equipped with, makes one layer of filler and a spacer ring constitute one group, on filler casing There is passage to be connected with each spacer ring, constitute detection mouth I, II, III, can fill out to add with reference to dead load on practical situation and filler Material and spacer ring group number, increase detection mouth number.
Anti-wear gasket 12 is provided between 20 contact surface of annular boss 11 and filler casing, is provided between plug screw 25 and detection mouth 24 Seal washer 26, blank flange 60 are passed through stud 62 and nut 63 and are fixedly connected with filler casing 20, blank flange 60 and filler Pad 64 is provided between the contact surface of casing 20.
Measuring method of the present utility model is as follows:
First, the measurement of the low leakage of valve stem packing fugacity
97% helium is not less than as test(ing) medium from volume content.
Experimental provision needs an actuator to do mechanical cycles action with ovable valve stem (stretching rotates);If test wrapper There is high temperature requirement in border, need to arrange heater 90, heater is arranged on the outer wall of filler casing air chamber, heating dress It is electric blanket, heating coil or other appropriate firing equipments to put, and heat is arranged on the outer wall of filler casing air chamber Galvanic couple 100, thermocouple 100 carry out monitoring temperature in Thermal Cycling;Mechanical cycles and the concrete process of the test of thermal cycle are complete Carried out using requirement in standard API622-2006.
Detection mouth leakage measuring method is:Using band probe (sniffer) Helium leak detector respectively to detection mouth I, II, Helium leak amount at III is detected that measuring the principle specified according to EPA programs 21 is carried out;Measurement operating procedure adopts ISO In 15848-1-2006, method is carried out.
Test procedure is:After device is completed mechanical cycles, filler cabinets cavity is pressurized to into valve pressure grade each The test pressure of regulation,
(1) detection mouth II, III is blocked with plug screw, at detection mouth I detect helium leak amount, the reading of a recording instrument;
(2) detection mouth I, III is blocked with plug screw, at detection mouth II detect helium leak amount, the reading of a recording instrument;
(3) detection mouth I, II is blocked with plug screw, at detection mouth III detect helium leak amount, the reading of a recording instrument;
(4) device pressure release.
By to test data analyzer, being optimized design to the height of stuffing-box.
2nd, the measurement of valve stem packing visual leak
From water or gas as test(ing) medium.
Experimental provision needs an actuator to do mechanical cycles action with ovable valve stem (stretching rotates).Test environment In have high temperature requirement, need to arrange heater, heater is arranged on the outer wall of filler casing air chamber, and heater can Think electric blanket, heating coil or other appropriate firing equipments, and thermocouple is equipped on the outer wall of filler casing air chamber Monitoring temperature is carried out in Thermal Cycling;Mechanical cycles and the concrete process of the test of thermal cycle adopt standard API622- completely Require in 2006.
Detection mouth leakage measuring method is:Interior liquid leakage per minute is estimated by timer or stopwatch and drips number or bubble Number.
Test procedure is:After device is completed mechanical cycles, filler cabinets cavity is pressurized to into valve pressure grade each The test pressure of regulation,
(1) detection mouth II, III is blocked with plug screw, estimate whether there is visual leak, record per minute if having at detection mouth I Interior liquid leakage drop number or number of bubbles;
(2) detection mouth I, III is blocked with plug screw, estimate whether there is visual leak, record per minute if having at detection mouth II Interior liquid leakage drop number or number of bubbles;
(3) detection mouth I, II is blocked with plug screw, estimate whether there is visual leak, record per minute if having at detection mouth III Interior liquid leakage drop number or number of bubbles;
(4) device pressure release.
Ultimate principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description Simply illustrate principle of the present utility model, on the premise of without departing from this utility model spirit and scope, this utility model is also Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed this utility model.This utility model Claimed scope is by appending claims and its equivalent thereof.

Claims (7)

1. valve stuffing box leakage rate detection by quantitative assay device;Characterized in that, the assay device includes:
One stuffing-box, described filler letter include:
One filler casing;
Described filler casing includes left opening and right opening, and the inside of filler casing is provided with the packing cavity and sky of mutual conduction The junction of air cavity, described filler chamber and air chamber is provided with a boss;Described filler casing is provided with the detection through packing cavity Mouthful, detection mouth is sealed by plug screw;The left opening is sealed by blank flange, and the blank flange is provided with The air inlet of one air chamber conducting or gas outlet;
One filler pressing sleeve;
One hold-down grid, filler pressing sleeve are arranged between filler casing and hold-down grid, and hold-down grid passes through bolt and stuffing box Body is fixedly connected;
One valve rod, one end of the valve rod are stretched into from left opening, are stretched out from right opening, and pass through filler pressing sleeve and filler pressure Plate;The other end of the valve rod is located in left opening, is fastened in left opening by the annular boss of valve stem end;It is described If dried layer filler is provided between valve rod and packing cavity, between every layer of filler, spacer ring is equipped with.
2. valve stuffing box leakage rate detection by quantitative assay device according to claim 1, it is characterised in that the annular Anti-wear gasket is provided between boss and stuffing box contact level.
3. valve stuffing box leakage rate detection by quantitative assay device according to claim 1, it is characterised in that the plug screw Seal washer is provided between detection mouth.
4. valve stuffing box leakage rate detection by quantitative assay device according to claim 1, it is characterised in that the blind plate Flange is fixedly connected with filler casing by stud and nut, is provided with pad between the contact surface of blank flange and filler casing.
5. valve stuffing box leakage rate detection by quantitative assay device according to claim 1, it is characterised in that the test Device also includes a heater, and the heater is arranged on the outer wall of filler casing air chamber.
6. valve stuffing box leakage rate detection by quantitative assay device according to claim 1, it is characterised in that the test Device also includes a thermocouple, and the thermocouple is arranged on the outer wall of filler casing air chamber.
7. valve stuffing box leakage rate detection by quantitative assay device according to claim 5, it is characterised in that the heating Device is electric blanket or heating coil.
CN201620835294.4U 2016-08-03 2016-08-03 Valve stuffing box leakage rate detection by quantitative assay device Active CN206072511U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620835294.4U CN206072511U (en) 2016-08-03 2016-08-03 Valve stuffing box leakage rate detection by quantitative assay device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620835294.4U CN206072511U (en) 2016-08-03 2016-08-03 Valve stuffing box leakage rate detection by quantitative assay device

Publications (1)

Publication Number Publication Date
CN206072511U true CN206072511U (en) 2017-04-05

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Country Status (1)

Country Link
CN (1) CN206072511U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111174985A (en) * 2020-01-10 2020-05-19 华东理工大学 Filler sealing performance detection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111174985A (en) * 2020-01-10 2020-05-19 华东理工大学 Filler sealing performance detection device

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