CN107061793B - Constant value decompression real-time sampling valve - Google Patents
Constant value decompression real-time sampling valve Download PDFInfo
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- CN107061793B CN107061793B CN201710339273.2A CN201710339273A CN107061793B CN 107061793 B CN107061793 B CN 107061793B CN 201710339273 A CN201710339273 A CN 201710339273A CN 107061793 B CN107061793 B CN 107061793B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1226—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston the fluid circulating through the piston
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Magnetically Actuated Valves (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a constant-value pressure-reducing real-time sampling valve which mainly comprises an upper body, a lower body and an electromagnetic switch valve, wherein the upper body is connected with the lower body through threads, a liquid inlet, a liquid outlet and a control liquid channel are formed in the upper body, a valve core, a spring and a check ring are arranged in the upper body, the valve core is assembled in a valve cavity, the spring is arranged in the valve core, and the valve core is pressed against the check ring; the lower body is provided with a sampling port and a control liquid channel, an electromagnetic switch valve and an end cover are arranged on the lower body, a piston and a push rod are arranged in the lower body, the piston is connected with the push rod through a bolt, and the piston is arranged in a piston cavity; the invention effectively solves the problem of inconvenient operation of the cementing system cement slurry, drilling mud and other real-time sampling sites, has simple structure, convenient installation and flexible operation, and greatly reduces the labor intensity of workers.
Description
Technical Field
The invention relates to a sampling device, in particular to a constant-value pressure-reducing real-time sampling valve.
Background
Sampling valves are valves used to obtain samples of media in a pipeline or facility, and in many applications where chemical analysis of the media sample is often required, specialized sampling valves are often used. According to the different theory of operation or performance when taking a sample, the sample valve mainly falls into three kinds, including duplex open valve, flange clamp valve and take the sample valve of heat preservation clamp cover, but they can not handle the fluid that molecular structure is complicated, viscosity is big effectively, take place the jam problem easily to inadaptation high pressure environment, the security performance is unstable, can not realize the real-time sample.
Disclosure of Invention
In order to solve the problems of the existing tool, the invention aims to provide the constant-value pressure-reducing real-time sampling valve which is convenient to use and install, safe and reliable, has a simple structure and can realize real-time sampling and reduce the pressure of a sampling port.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a constant-value pressure-reducing real-time sampling valve comprises an upper body, a spring, a valve core, a push rod, a piston, a lower body and an electromagnetic switch valve;
the rear end of the upper body is connected with the lower body through threads, the upper body is provided with a valve cavity for assembling a valve core, the front end of the upper body is provided with a liquid inlet A, a liquid outlet B and a control liquid channel D which are communicated with a main sampling liquid pipeline, the liquid inlet A, the liquid outlet B and the control liquid channel D are communicated with the valve cavity of the upper body, the valve cavity is internally provided with the valve core, a spring and a retainer ring, a boss is arranged in the valve cavity, the valve core is pressed against the boss through the spring and the retainer ring, two sides of the valve core are respectively provided with a fluid through hole F communicated with the valve cavity, an annular throttling channel E is arranged between the valve core and the upper body, an inlet of the throttling channel E is communicated with the fluid through hole F, and an outlet of the throttling channel E is provided with a throttling orifice M;
the piston cavity for installing the push rod and the piston is arranged in the lower body, the piston is connected with the valve core through the push rod, the lower body is provided with a sampling port C and a control liquid channel H, the sampling port C is communicated with the piston cavity, the valve core is pressed against a valve seat formed by the lower body, the piston cavity is communicated or cut off with a throttle orifice M in the upper body through the valve core, the control liquid channel H is used for communicating a control liquid channel D on the upper body with the rear of the piston cavity, an electromagnetic switch valve for controlling the communication or cut-off of the control liquid channel H is further arranged on the upper body, a damping hole G for communicating the front cavity and the rear cavity of the piston cavity is arranged on the piston, the piston is pushed to move forwards through the control liquid channel H, and then the valve core is pushed to enable the throttle orifice M to be communicated with the piston cavity to be sampled through the sampling port C.
Further, the piston is connected with the push rod through a bolt, and is sealed through an O-shaped sealing ring and then placed in the piston cavity.
Further, the rear end of the lower body is connected with an end cover in a screwed way to the end head, and a sealing ring is arranged between the end cover and the lower body.
Further, the liquid inlet A is connected with the main pipeline of the sampling liquid through a flange, the liquid outlet B is connected with the main pipeline through threads, and the sampling port C is connected with the sampling pipe through threads.
Further, the top end of the valve core is of a conical structure and is pressed against a valve seat formed by the lower body.
Further, the taper of the cone valve in the electromagnetic switch valve is 10-60 degrees.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a constant-value pressure-reducing real-time sampling valve, which comprises an upper body, a spring, a valve core, a push rod, a piston, a lower body and an electromagnetic switch valve; when sampling is performed, the electromagnetic switch valve is switched on, a control liquid channel entering the piston cavity is opened, a part of high-pressure liquid flows from the liquid inlet to the control liquid channel in the upper body and the lower body, then flows into the cavity at the rear end of the piston, acts on the rear end surface of the piston, and enters the cavity at the front end surface of the piston through the damping hole on the piston, and simultaneously forms a throttling pressure difference on the front end surface and the rear end surface of the piston, so that the piston is pushed to move forward, the valve core is jacked up, the sampling channel is opened, then the sampling liquid flows into the valve cavity through the through hole on the side wall of the valve core, flows out of the sampling port through the throttling channel and the throttling opening, and due to the throttling effect, the pressure of the sampling port is greatly reduced and is generally set to be slightly larger than the atmospheric pressure, and thus the constant-value decompression real-time sampling is realized.
When sampling is finished, the electromagnetic switch valve is closed, the chamber behind the piston cuts off high-pressure fluid, the chamber behind the piston is communicated with the damping hole to form pressure balance, the reset spring enables the valve core to reset, the valve core is pressed against the valve seat of the lower body to close the sampling port, and meanwhile, the piston is pushed to move backwards.
The invention effectively solves the problem of inconvenient operation of the cementing system cement slurry, drilling mud and other real-time sampling sites, has simple structure, convenient installation and flexible operation, can realize real-time sampling, reduces the pressure of a sampling port and greatly reduces the labor intensity of workers.
The upper body is in threaded connection with the lower body, so that the problem that impurities deposited in the upper body cannot be removed during integral molding is avoided, and the valve core can be installed and replaced, so that the assembly and the maintenance and replacement of the valve core are very convenient and quick.
The valve core wall is provided with a fluid through hole which is communicated with the valve cavity, so that liquid can smoothly flow to the throttling channel through the valve cavity.
The piston is provided with a damping hole, so that throttling pressure difference is generated when the piston moves forwards, and the balance effect of liquid pressure at two ends of the piston is realized when the piston moves backwards.
An annular throttling channel is arranged between the valve core and the valve upper body, the outlet of the throttling channel is a throttling opening with a settable opening degree, the size of the throttling channel can be changed according to different liquid pressures, when the piston moves forwards, the liquid flows to the throttling opening to generate throttling effect, so that the pressure of a sampling port is slightly larger than the atmospheric pressure, and the effect of constant pressure reduction is realized.
Further, the top end of the valve core is of a conical structure and is pressed against the valve seat of the lower body, so that liquid flowing to the sampling port can be better isolated.
Further, the taper of the cone valve in the electromagnetic switch valve is 10-60 degrees, so that the cone valve transversely reduces the acting force of fluid and can move up and down freely.
Further, the push rod is connected with the piston through threads, and an O-shaped sealing ring is arranged between the push rod and the piston, so that the push rod is convenient to connect with the piston, liquid is prevented from entering a piston cavity from a gap, and enough pressure difference exists between the inside and the outside of a fluid channel, so that the sampling process is promoted.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention
In the figure: the valve comprises an upper body 1, a retainer ring 2, a spring 3, a valve core 4, a push rod 5, a piston 6, an O-shaped sealing ring 7, a lower body 8, an end cover 9 and an electromagnetic switch valve 10.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, shall fall within the scope of the invention.
The present invention will be described in detail with reference to the accompanying drawings.
As shown in figure 1, the constant-value pressure-reducing real-time sampling valve mainly comprises an upper body 1, a retainer ring 2, a spring 3, a valve core 4, a push rod 5, a piston 6, an end cover 9 and an electromagnetic switch valve 10.
The upper body 1 is in threaded connection with the lower body 8, a liquid inlet A, a liquid outlet B and a control liquid channel D are arranged on the upper body, a valve core 4, a spring 3 and a retainer ring 2 are arranged in the upper body, the valve core is assembled in a valve cavity, the spring is arranged in the valve core and is pressed against the retainer ring, and two sides of the valve core are respectively provided with a fluid through hole F which is communicated with the valve cavity; an annular throttling channel E is arranged between the valve core 4 and the valve upper body 1, and the outlet of the throttling channel is a throttling orifice M with a settable opening. The lower body is provided with a sampling port C and a control liquid channel H, an electromagnetic switch valve 10 and an end cover 9 are arranged in the lower body, a piston 6 and a push rod 5 are arranged in the lower body, the piston and the push rod are sealed by arranging an O-shaped sealing ring 7 and are connected through bolts, the piston is arranged in a piston cavity and can move freely, one or two damping holes G are formed in the piston, the push rod 5 is a rotating body, the bottom of the push rod is of a round surface structure, the end cover 9 is screwed at the axial end of the lower body, and a sealing ring is arranged between the end cover and the lower body.
The liquid inlet A is connected with the main pipeline through a flange, the liquid outlet B is connected with the main pipeline through threads, and the sampling port C is connected with the sampling pipe through threads; the upper body 1 and the lower body 8 are both revolution bodies and are connected through threads. The top end of the valve core 4 is of a conical structure and is pressed against the valve seat of the lower body, and the conical degree of the electromagnetic switch valve 10 is 10-60 degrees.
When sampling is performed, the electromagnetic switch valve 10 is switched on, a control liquid channel entering the piston cavity is opened, a part of high-pressure liquid flows from the liquid inlet A to the control liquid channel D, H in the upper body 1 and the lower body 8, then flows into the rear cavity of the piston 6, acts on the rear end surface of the piston, enters the front cavity of the piston through the damping hole G on the piston, forms throttling pressure difference on the front end surface and the rear end surface of the piston, pushes the piston to move forward, jacks the valve core 4, opens the sampling channel, then the sampling liquid flows into the valve cavity through the through hole F on the side wall of the valve core, flows out of the sampling port C through the throttling channel E, and the pressure of the sampling port is greatly reduced and is generally slightly larger than the atmospheric pressure due to throttling, so that constant-value decompression real-time sampling is realized.
When the sampling is finished, the electromagnetic switch valve 10 is closed, the chamber behind the piston cuts off high-pressure fluid, the chamber behind the piston is communicated with the damping hole G to form pressure balance, the return spring 3 enables the valve core 4 to reset and press against the valve seat of the lower body to close the sampling port, and at the same time, the piston is pushed to move backwards, and meanwhile, the end cover 9 positioned at the rear axial end head on the lower body 8 can realize the installation and replacement of the push rod and the piston, so that the assembly, the maintenance and the replacement of the push rod and the piston are very convenient and fast.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (4)
1. The utility model provides a definite value decompression real-time sampling valve which characterized in that: the valve comprises an upper body (1), a spring (3), a valve core (4), a push rod (5), a piston (6), a lower body (8) and an electromagnetic switch valve (10);
the rear end of the upper body (1) is connected with the lower body (8) through threads, a valve cavity for assembling the valve core (4) is formed in the upper body (1), a liquid inlet A, a liquid outlet B and a control liquid channel D which are all communicated with a main sampling liquid pipeline are formed in the front end of the upper body (1), the liquid inlet A is communicated with the valve cavity, a valve core (4), a spring (3) and a retainer ring (2) are arranged in the valve cavity, the valve core (4) is internally provided with the spring (3), the retainer ring (2) is arranged between the valve core (4) and the liquid inlet A, fluid through holes F communicated with the valve cavity are respectively formed in two sides of the outer side of the valve core, an annular throttling channel E is further formed between the valve core (4) and the upper body (1), an inlet of the throttling channel E is communicated with the fluid through holes F, and a throttling port M is formed in an outlet;
the lower body (8) is internally provided with a piston cavity for installing the push rod (5) and the piston (6), the piston (6) is connected with the valve core (4) through the push rod (5) at the front, the lower body (8) is provided with a sampling port C and a control liquid channel H, the sampling port C is communicated with the piston cavity, the valve core (4) is pressed against a valve seat formed by the lower body, the piston cavity is communicated with or cut off from a throttle orifice M in the upper body (1) through the valve core (4), the control liquid channel H is used for communicating the control liquid channel D on the upper body (1) with the piston cavity at the rear of the piston (6), the upper body (1) is also provided with an electromagnetic switch valve (10) for controlling the communication or cut off of the control liquid channel H, the piston (6) is provided with a damping hole G for communicating the front part cavity and the rear part of the piston cavity, the piston (6) is pushed to move forwards through the control liquid channel H, and the throttle orifice M is pushed to be communicated with the piston cavity through the control liquid channel C;
an end cover (9) is screwed at the rear end of the lower body (8) towards the end head, and a sealing ring is arranged between the end cover (9) and the lower body (8);
the top end of the valve core (4) is of a conical structure and is pressed against a valve seat formed by the lower body.
2. The constant value pressure reducing real-time sampling valve according to claim 1, wherein: the piston is connected with the push rod through a bolt, and is sealed by an O-shaped sealing ring (7) and then is arranged in the piston cavity.
3. The constant value pressure reducing real-time sampling valve according to claim 1, wherein: the liquid inlet A is connected with the main pipeline of the sampling liquid through a flange, the liquid outlet B is connected with the main pipeline through threads, and the sampling port C is connected with the sampling pipe through threads.
4. The constant value pressure reducing real-time sampling valve according to claim 1, wherein: the taper of the cone valve in the electromagnetic switch valve (10) is 10-60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710339273.2A CN107061793B (en) | 2017-05-15 | 2017-05-15 | Constant value decompression real-time sampling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710339273.2A CN107061793B (en) | 2017-05-15 | 2017-05-15 | Constant value decompression real-time sampling valve |
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| Publication Number | Publication Date |
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| CN107061793A CN107061793A (en) | 2017-08-18 |
| CN107061793B true CN107061793B (en) | 2023-04-28 |
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| CN201710339273.2A Active CN107061793B (en) | 2017-05-15 | 2017-05-15 | Constant value decompression real-time sampling valve |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488455A (en) * | 2018-04-11 | 2018-09-04 | 王爱菊 | Valve gear and hydraulic system |
| CN109632403B (en) * | 2018-12-06 | 2024-02-06 | 成都华科阀门制造有限公司 | Gas collection device |
| CN111272489A (en) * | 2020-04-03 | 2020-06-12 | 鞍山拜尔自控有限公司 | Closed automatic sampling system and method |
| KR102225162B1 (en) * | 2020-06-19 | 2021-03-09 | (주)브이텍 | Air-valve unit for vacuum system |
| CN113803314B (en) * | 2021-09-10 | 2024-08-06 | 浙江华益精密机械有限公司 | Direct-acting pressure reducing and releasing valve |
| CN114791375B (en) * | 2022-05-04 | 2022-10-04 | 浙江致远工程管理有限公司 | Intelligent equipment for building material inspection |
| CN115032022B (en) * | 2022-06-22 | 2024-08-20 | 中煤科工集团重庆研究院有限公司 | Underground coal mine spiral pressing-in type airtight sampling device and method |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567389A (en) * | 1968-04-03 | 1971-03-02 | Coulter Electronics | Fluid transfer valve structure |
| FR1603352A (en) * | 1968-05-13 | 1971-04-13 | ||
| US4479393A (en) * | 1983-04-27 | 1984-10-30 | Ben E. Jaeger | Sampler for slurries |
| US4901759A (en) * | 1988-05-20 | 1990-02-20 | Westinghouse Electric Corp. | Constant flow and constant pressure fluid regulator |
| JPH0763270A (en) * | 1993-08-23 | 1995-03-07 | Nikkiso Co Ltd | Three way port pneumatic operation valve |
| CN2432410Y (en) * | 2000-08-14 | 2001-05-30 | 苏州市中新动力设备辅机有限公司 | Fully automatic constant flow pressure reducing valve |
| CN2615657Y (en) * | 2003-04-15 | 2004-05-12 | 中国石化仪征化纤股份有限公司 | Granular material on-line automatic sampling device |
| CN102829204B (en) * | 2012-09-10 | 2013-11-06 | 天津百利展发集团有限公司 | Constant flow shutoff-throttle multipurpose valve |
| CN205918959U (en) * | 2016-06-28 | 2017-02-01 | 河南航天液压气动技术有限公司 | Axial -flow type level pressure relief pressure valve |
| CN106151540B (en) * | 2016-07-05 | 2018-08-17 | 正茂阀门有限公司 | Adjustable quantitative sampling valve |
| CN207005346U (en) * | 2017-05-15 | 2018-02-13 | 西安石油大学 | A kind of definite value depressurizes real time sample valve |
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