CN107013687B - Single injection regulating valve - Google Patents
Single injection regulating valve Download PDFInfo
- Publication number
- CN107013687B CN107013687B CN201710332157.8A CN201710332157A CN107013687B CN 107013687 B CN107013687 B CN 107013687B CN 201710332157 A CN201710332157 A CN 201710332157A CN 107013687 B CN107013687 B CN 107013687B
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- China
- Prior art keywords
- annular gasket
- transparent tube
- tubular shell
- push rod
- ball
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a single injection regulating valve, which comprises a tubular shell, a pair of wires, a transparent tube, a push rod and a ball, wherein the pair of wires are arranged in the tubular shell; a step is formed at the first end of the tubular shell, and an O-shaped sealing ring, an annular gasket and a pair of threads are sequentially arranged on the step; an end cover is formed at the second end of the tubular shell, and the inner diameter of the end cover is smaller than that of the transparent pipe; the transparent tube is arranged inside the tubular shell; the inner surface of the end cover is provided with internal threads; the top end of the push rod is provided with a groove and is inserted into the transparent tube, and the transparent tube is internally provided with a first annular gasket; the first annular gasket is sealed with the transparent tube; the outer surface of one end of the push rod, which is far away from the groove, is provided with an external thread matched with the internal thread on the end cover; a space formed among the first annular gasket, the transparent pipe and the annular gasket is a working cavity, and the ball is freely placed in the working cavity; the diameter of the ball is larger than the inner diameter of the annular gasket. This single injection volume governing valve combines with current electromagnetic pump/motor pump, and accurate control single addition satisfies the gas station and adds smelly demand for the gas low discharge.
Description
Technical Field
The invention relates to the field of chemical addition, in particular to the field of natural gas odorization equipment, and specifically relates to a single-injection-amount adjusting valve.
Background
The natural gas odorizing equipment belongs to the chemical medicine adding machinery, and according to the national standard, 20-25 mg of tetrahydrothiophene is required to be added into each formula of gaseous natural gas as an odorizing agent. The natural gas is colorless and odorless, and the odorous agent is added to play a role in alarming. At present, the equipment for odorizing natural gas mainly comprises: 1) An electromagnetic pump used in a gaseous (low pressure) state; 2) In the liquid (high pressure) state, an electric motor pump is used. Electromagnetic pump or motor pump all are constituteed by a plurality of parts, and every part all has dimensional tolerance in process of production, therefore finished product motor pump or electromagnetic pump's single injection volume all has the difference, can not guarantee completely unanimous.
Before the pump leaves a factory, the diaphragm type electromagnetic pump can change the measuring range by adding a gasket behind a pump film so as to reduce the single injection amount, and the plunger type motor pump can reduce the single injection amount by changing a connecting rod. The electromagnetic pump is difficult to change the single injection amount after leaving the factory; although the frequency of the motor pump can be changed through frequency conversion, and the single injection amount can be adjusted, the motor pump can adjust the single injection amount through manually adjusting the connecting rod, the measuring range is 50-500 mg, but the frequency of the motor pump is very high, the flow per minute is also large, and the requirement of small injection amount can not be met after adjustment.
The natural gas is mainly used for resident gas, vehicle gas and heat supply. The dosage of the composition has peak and valley. The fuel gas used by residents is mainly used for cooking, the peak is in the morning, at noon and at night, and the usage amount is little at other times. The single injection amount of the odorizing equipment produced by enterprises is 200 mg-500mg at the lowest, and the odorizing amount of each formula of natural gas is only 20-25 mg. If an electromagnetic pump with a single injection amount of 200mg is adopted, in order to achieve the odorization standard, namely 25mg of natural gas per square, the requirement that the gas consumption per minute exceeds 8 square is met, and once the gas consumption per minute is lower than 8 square, the odorization is not carried out or the odorization is carried out excessively. If an electromagnetic pump with a single injection amount of 500mg is adopted, 25mg of each prescription gas is treated according to the odorization standard; the gas consumption per minute should exceed 20 square gas; once the gas consumption per minute is less than 20, the electromagnetic pump cannot be odorized or can be excessively odorized. When the motor pump is at 50Hz, the frequency of the pump is generally 135 times per minute, and at 12Hz, the frequency of the pump is about 50 times, the single injection amount can be adjusted to about 50 times at least, and the requirement of small flow rate is difficult to adapt. In order to more accurately control the odorization of the fuel gas, the problem to be solved is urgently solved by strictly controlling the single addition amount.
The single chip microcomputer or PLC of the control system of the odorizing machine generally has three working states, namely, a first segmented odorizing state at regular time intervals of morning, noon and evening, a second fixed frequency for odorizing at set frequency of pump work per minute, and a third automatic odorizing state, wherein a natural gas flowmeter gives signals (4-20 ma current, 0-10V voltage and 4-32V voltage) according to flow, and the flow signals are connected with the single chip microcomputer or PLC for controlling the frequency of the pump. The third is clearly the most accurate and without manual operation, but the odorizer does not have a small flow and cannot be set automatically in the case of small natural gas flows. Likewise, the same problems are faced in the field of chemical reagent addition.
Disclosure of Invention
In order to solve the problem of odorization of small flow of fuel gas, the invention provides a single injection quantity regulating valve which is combined with the existing electromagnetic pump/motor pump to accurately control the single injection quantity and meet the requirement of odorizing the small flow of fuel gas in a fuel gas station.
Therefore, the technical scheme of the invention is as follows:
a single injection quantity regulating valve comprises a tubular shell, a pair of threads, a transparent tube, a push rod and a ball;
a step is formed at the first end of the tubular shell, threads are arranged on the inner wall of the tubular shell and matched with the aligning threads, and an O-shaped sealing ring, an annular gasket and the aligning threads are sequentially arranged at the step; the paired wires are connected with the output port of the motor pump/electromagnetic pump;
an end cover is formed at the second end of the tubular shell, and the inner diameter of the end cover is smaller than that of the transparent pipe; the transparent tube is arranged inside the tubular shell; the inner surface of the end cover is provided with internal threads;
the top end of the push rod is provided with a groove and inserted into the transparent tube, and a first annular gasket is arranged in the transparent tube; the hollow position of the first annular gasket corresponds to the position of the groove of the push rod and is communicated with the inner cavity of the transparent tube; the first annular gasket is sealed with the transparent tube; the outer surface of one end of the push rod, which is far away from the groove, is provided with an external thread matched with the internal thread on the end cover;
a space formed among the first annular gasket, the transparent pipe and the annular gasket is a working cavity, and the ball is freely placed in the working cavity; the diameter of the ball is larger than the inner diameter of the annular gasket.
Further, the single injection quantity regulating valve also comprises a secondary sealing device, and the secondary sealing device comprises a tee joint, a shell and a latex film; the tubular shell is divided into two sections which are respectively installed at the horizontal position of the tee joint in a sealing mode, the other port of the tee joint is installed on the shell, and the latex film is installed in the shell to form sealing.
Furthermore, the local part of the tubular shell is provided with an observation window which can see the movement of the ball in the transparent tube.
Further, the inner wall of the first annular gasket is chamfered, and the shape of the first annular gasket is matched with that of the ball.
Furthermore, the end face of the push rod, which is provided with the external thread end, is provided with a handle or a disc, so that the push rod can be conveniently rotated to adjust the volume of the working cavity.
Further, the first annular gasket and the annular gasket are polytetrafluoroethylene gaskets.
The single injection quantity regulating valve regulates the volume of the working cavity by rotating the push rod, then controls the single injection quantity, and can realize the micro-control of the single injection quantity by simple operation; the bolus control valve regulates the bolus of a reciprocating pump type with a passive reciprocating device. The device can also be used in the field of chemical reagent addition for reference.
Drawings
FIG. 1 is a schematic sectional view showing a single injection amount adjusting valve in example 1;
fig. 2 is a schematic sectional view showing a single injection amount control valve in embodiment 2.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and examples.
Example 1
A single injection quantity regulating valve comprises a tubular shell 3, a pair wire 4, a transparent tube 2, a push rod 1 and a ball 6;
a step is formed at the first end of the tubular shell 3, threads are arranged on the inner wall of the tubular shell and matched with the counter thread 4, and an O-shaped sealing ring, an annular gasket 5 and the counter thread 4 are sequentially arranged at the step; the counter wire 4 is connected with the output port of the motor pump/electromagnetic pump;
the second end of the tubular shell 3 is provided with an end cover, and the inner diameter of the end cover is smaller than that of the transparent tube 2; the transparent tube 2 is arranged inside the tubular shell 3; the inner surface of the end cover is provided with internal threads;
the top end of the push rod 1 is provided with a groove 102 and inserted into the transparent tube 2, and a first annular gasket 7 is arranged in the transparent tube 2; the hollow position of the first annular gasket 7 corresponds to the position of the groove 102 of the push rod 1 and is communicated with the inner cavity of the transparent tube 2; the first annular gasket 7 is sealed with the transparent tube 2; the outer surface of one end of the push rod 1, which is far away from the groove 102, is provided with an external thread matched with the internal thread on the end cover; a handle or a disc 101 is arranged on the end surface of the push rod 1 provided with the external thread end, so that the push rod 1 can be conveniently rotated to adjust the volume of the working cavity;
a space formed among the first annular gasket 7, the transparent tube 2 and the annular gasket 5 is a working cavity, and the ball 6 is freely placed in the working cavity; the diameter of the ball 6 is greater than the inner diameter of the annular gasket 5. Preferably, the inner wall of the first annular gasket 7 is chamfered to match the shape of the ball 6, improving sealing. The first annular gasket 7 and the annular gasket 5 are both polytetrafluoroethylene gaskets.
As a modification of this embodiment, the tubular housing 3 is partially provided with a viewing window 301 to enable the movement of the ball 6 within the transparent tube 2 to be seen.
When the device is used, the counter wires 4 are connected with the output ports of the motor pump/electromagnetic pump, gas enters the working cavity from the counter wires 4, and the volume of the working cavity is controlled by adjusting the push rod 1; then controlling the single injection amount; when the push rod 1 is pushed to the head, the ball 6 blocks the hollow position of the annular gasket 5, and the motor pump/electromagnetic pump works according to the original working process.
Example 2
The difference from the single injection quantity regulating valve in embodiment 1 is that the device further comprises a secondary sealing device 8, wherein the secondary sealing device 8 comprises a tee joint 801, a shell 802 and a latex film 803; the tubular shell 3 is divided into two sections, which are respectively installed at the horizontal position of the tee 801 in a sealing manner, the other port of the tee 801 is installed with the shell, and the latex film 803 is installed in the shell 802 to form a seal.
During the use, to silk 4 and motor pump/electromagnetic pump's delivery outlet continuous, gaseous from 4 entering working chambers to silk, then through first annular gasket and groove entering transparent pipe, to secondary seal device 8 in, realize the control of single input volume.
Claims (6)
1. A single shot size control valve, characterized by: comprises a tubular shell (3), a pair of filaments (4), a transparent tube (2), a push rod (1) and a ball (6);
a step is formed at the first end of the tubular shell (3), threads are arranged on the inner wall of the tubular shell and matched with the counter thread (4), and an O-shaped sealing ring, an annular gasket (5) and the counter thread (4) are sequentially arranged at the step;
an end cover is formed at the second end of the tubular shell (3), and the inner diameter of the end cover is smaller than that of the transparent tube (2); the transparent tube (2) is arranged inside the tubular shell (3); the inner surface of the end cover is provided with internal threads;
the top end of the push rod (1) is provided with a groove (102) and inserted into the transparent tube (2), and a first annular gasket (7) is arranged in the transparent tube (2); the hollow position of the first annular gasket (7) corresponds to the position of the groove (102) of the push rod (1) and is communicated with the inner cavity of the transparent tube (2); the first annular gasket (7) is sealed with the transparent tube (2); the outer surface of one end, far away from the groove (102), of the push rod (1) is provided with an external thread matched with the internal thread on the end cover;
a space formed among the first annular gasket (7), the transparent pipe (2) and the annular gasket (5) is a working cavity, and the ball (6) is freely placed in the working cavity; the diameter of the ball (6) is larger than the inner diameter of the annular gasket (5).
2. The single-shot rate regulator of claim 1, wherein: the device is characterized by further comprising a secondary sealing device (8), wherein the secondary sealing device (8) comprises a tee joint (801), a shell (802) and a latex film (803); the tubular shell (3) is divided into two sections which are respectively installed at the horizontal position of the tee joint (801) in a sealing mode, the other port of the tee joint (801) is provided with an outer shell (802), and the latex film (803) is installed in the outer shell (802) to form sealing.
3. The single-shot rate adjustment valve of claim 1 or 2, wherein: the local part of the tubular shell (3) is provided with an observation window (301) which can see the movement of the ball (6) in the transparent tube (2).
4. The single-shot rate adjustment valve of claim 1 or 2, wherein: the inner wall of the first annular gasket (7) is chamfered, and the shape of the first annular gasket is matched with that of the ball (6).
5. The single-shot rate adjustment valve of claim 1 or 2, wherein: the end face of the push rod (1) provided with the external thread end is provided with a handle or a disc (101).
6. The single-shot rate adjustment valve of claim 1 or 2, wherein: the first annular gasket (7) and the annular gasket (5) are both polytetrafluoroethylene gaskets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710332157.8A CN107013687B (en) | 2017-05-12 | 2017-05-12 | Single injection regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710332157.8A CN107013687B (en) | 2017-05-12 | 2017-05-12 | Single injection regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107013687A CN107013687A (en) | 2017-08-04 |
| CN107013687B true CN107013687B (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710332157.8A Active CN107013687B (en) | 2017-05-12 | 2017-05-12 | Single injection regulating valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN107013687B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003072868A (en) * | 2001-08-29 | 2003-03-12 | Mitani Valve Co Ltd | Upright and upside-down valve for aerosol vessel |
| CN201051052Y (en) * | 2007-05-24 | 2008-04-23 | 潍柴动力股份有限公司 | A machine oil sampler |
| CN202691601U (en) * | 2012-07-05 | 2013-01-23 | 北京普发兴业动力科技发展有限责任公司 | Odorizing device of high-pressure compressed natural gas pipeline |
| CN106310512A (en) * | 2016-09-22 | 2017-01-11 | 苏州天健云康信息科技有限公司 | Split type micro valve |
| CN106481825B (en) * | 2016-12-08 | 2019-03-05 | 海盐四通管件制造有限公司 | One kind is vacuumized with suction type regulating valve |
| CN206845917U (en) * | 2017-05-12 | 2018-01-05 | 莫中振 | Bolus injection adjustable valve |
-
2017
- 2017-05-12 CN CN201710332157.8A patent/CN107013687B/en active Active
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| Publication number | Publication date |
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| CN107013687A (en) | 2017-08-04 |
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