CN103016751A - Valve and pressure measuring device - Google Patents
Valve and pressure measuring device Download PDFInfo
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- CN103016751A CN103016751A CN2012105420166A CN201210542016A CN103016751A CN 103016751 A CN103016751 A CN 103016751A CN 2012105420166 A CN2012105420166 A CN 2012105420166A CN 201210542016 A CN201210542016 A CN 201210542016A CN 103016751 A CN103016751 A CN 103016751A
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- valve
- needle
- hole
- valve needle
- needle cover
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Abstract
The invention relates to a valve and a pressure measuring device. The valve comprises a cylinder, a valve needle sleeve, a valve needle and a sealing plug, wherein a first hole and a second hole are symmetrically arranged in a side surface of the cylinder; the valve needle sleeve is of a cylinder shape and is arranged on an outer wall of the cylinder; an axis of the valve needle sleeve is coincided with the axis of the first hole; the valve needle is arranged in the valve needle sleeve; and the sealing plug is sleeved on the valve needle. The mode of sealing inside fluid is adopted by the invention and the cooperation of the valve needle and the second hole can prevent fluid leakage, so that the fluid outside a main flow pipeline is prevented from being frozen. Meanwhile, the detaching of a measuring instrument is not influenced, so that the valve is more suitable and practical.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to a kind of valve that can avoid fluid to freeze.
Background technique
In existing petroleum production and the transportation or in the Chemical Manufacture, it is to adopt pipe method basically that fluid transports.For guaranteeing normal operation of producing, must carry out pressure monitoring to the fluid in the pipeline.As shown in Figure 8, generally be to offer side line 40 at pipeline 30 in the prior art, fluid is drawn and carry out pressure monitoring by this side line.In general, carry out the equipment 20 of pressure monitoring, for example pressure gauge needs to overhaul within a certain period of time, and perhaps equipment 20 damages and need to change.So, must valve 10 be set at side line, so that after valve 10 is closed, detaching equipment 20 again, prevent the fluid leakage in the pipeline 30.So valve 10 is the necessary equipments that carry out pressure monitoring.But just necessarily require side line 40 to have one section suitable length for valve 10 is set, and when normal production, the fluid in the survey line does not flow basically.
This situation is when ambient temperature is high, and is then no problem when perhaps the condensation point of fluid is very low.But the north cold winter said apparatus will be motionless for a long time because of the fluid in the side line 40, and because distant apart from main pipe 30, its heat can't be delivered to the far-end of side line, cause in the side line or the fluid in the equipment 20 frozen.And the pressure of the fluid that freezes in can't the accurate response pipeline, thereby cause this equipment 20 malfunctioning, cisco unity malfunction.
For addressing the above problem, prior art is to adopt the mode of insulation basically, namely wraps heat-preservation cotton outside side line 40 and valve 10.But such heat preserving mode, the one, increased cost and operation, the 2nd, sometimes or frozen situation occurs.
Summary of the invention
The invention provides a kind of valve and manometer of new structure, technical problem to be solved is to make it prevent that fluid from freezing, thereby more is suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of valve that the present invention proposes, it comprises: cylindrical shell, offer the first hole and the second hole in the sidewall symmetry of cylindrical shell; Valve needle cover is tubular, is arranged on described cylinder body outer wall, and its axis overlaps with described the first axially bored line; Needle, it is arranged in the above-mentioned valve needle cover; And seal plug, be sheathed on the described needle.
Preferably, aforesaid valve, the dead in line of wherein said the first hole, the second hole, valve needle cover, needle and seal plug.
Preferably, aforesaid valve, wherein said needle comprises: needle top section, it is coniform; The needle stage casing, its outer surface is provided with screw thread; And the needle rear, its outer surface is smooth surface.
Preferably, aforesaid valve, wherein said seal plug inwall is provided with at least one annular recess, is provided with seal ring in the described groove.
Preferably, aforesaid valve, the cross section of wherein said seal plug is convex shape, its convex portion embeds described valve needle cover, and is tightly connected with described stuffing box gland formation.
Preferably, aforesaid valve, the internal surface in wherein said the second hole forms coniform, and is complementary with described needle top section.
Preferably, aforesaid valve, it also comprises: assembly department, be arranged on the cylinder body outer wall at place, described the second hole, this assembly department has internal thread or outside thread.
Preferably, aforesaid valve, it also comprises: the cutting ferrule nut, its inwall is provided with screw thread; The outer wall of described valve needle cover is provided with screw thread, and the screw thread by the cutting ferrule nut matches with the screw thread of described valve needle cover, and described seal plug is fixed on described valve needle cover end.
Preferably, aforesaid valve, wherein said cutting ferrule nut-welding is in described cylindrical shell or valve needle cover.
The present invention also proposes a kind of manometer, and it comprises pressure gauge and above-mentioned valve, and described pressure gauge is installed on the cylinder body outer wall at place, described the second hole.
By technique scheme, valve of the present invention and manometer have following advantages at least:
Because the present invention has adopted the mode that seals at internal fluid, cooperation by needle and the second hole can prevent fluid leakage, thereby side line of the prior art and valve have been omitted, make surveying instrument and ducted main flow fluid distance nearer, thereby avoided the fluid outside the main flow pipeline frozen.Its reason comprise at least one be outside the main flow pipeline fluid from the main flow fluid more close to, be subjected to the impact of main flow fluid, it is mobile better, the 2nd, from the main flow fluid more close to, under the thermal radiation of main flow fluid, it can keep higher temperature, so be difficult to frozen.Simultaneously, also can not affect the detachable of surveying instrument.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and cooperate accompanying drawing to be described in detail as follows.
Description of drawings
Fig. 1 is the structural representation of the valve of one embodiment of the invention proposition.
Fig. 2 be among Fig. 1 A-A to sectional view.
Fig. 3 is the explosive view of the valve of one embodiment of the invention proposition.
Fig. 4 is the schematic representation of the needle of the valve that proposes of one embodiment of the invention.
Fig. 5 is the cylindrical shell of the valve that proposes of one embodiment of the invention and the sectional view of valve needle cover.
Fig. 6 is the sectional view of the seal plug of the valve that proposes of one embodiment of the invention.
Fig. 7 is that the manometer that this embodiment of proposes uses schematic representation.
Fig. 8 is that manometer uses schematic representation in the prior art.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of valve, structure, feature and effect thereof to foundation the present invention proposes are described in detail as follows.In following explanation, the not necessarily same embodiment that different " embodiments " or " embodiment " refer to.In addition, special characteristic, structure or the characteristics among one or more embodiment can be by any suitable form combination.
Extremely shown in Figure 6 such as Fig. 1, Fig. 1 is the structural representation of the valve of one embodiment of the invention proposition, Fig. 2 be among Fig. 1 A-A to sectional view, Fig. 3 is the explosive view of valve, Fig. 4 is the schematic representation of the needle of valve, Fig. 5 is the cylindrical shell of valve and the sectional view of valve needle cover, and Fig. 6 is the sectional view of the seal plug of valve.A kind of valve that one embodiment of the present of invention propose, it comprises: cylindrical shell 1, valve needle cover 2, needle 3 and seal plug 4.
As shown in Figure 5, described cylindrical shell 1 for cylindric, is offered the first hole 11 and the second hole 12 in its sidewall symmetry, the line of the center line in described the first hole 11 and the second hole 12 and the axes intersect of described cylindrical shell.In use, this cylindrical shell is connected on the pipeline and becomes the part of pipeline, and the flow in the pipeline is crossed described cylindrical shell.The inner surface configuration in better described the second hole 12 is outer little interior large coniform.
Described valve needle cover 2 is tubular, and it is fixed on the sidewall of described cylindrical shell 1 by the upper end.The first hole 11 on the described cylindrical shell is surrounded by described valve needle cover, the dead in line of the axis in described the first hole (also being center line) and described valve needle cover.Dead in line described herein is the mode of execution of the best under the perfect condition, because the misalignment of axe that the machining accuracy error causes also is considered as the described dead in line of the application.As shown in Figure 5, be provided with internal thread 21 at the inwall of described valve needle cover, be provided with outside thread 22 at the outer wall of described valve needle cover 2.
Described needle 3, for shaft-like, as shown in Figure 4, this needle comprises needle rear 31, needle stage casing 32 and needle top section 33.Described needle rear 31 is that an outer wall is the cylinder of smooth surface, and smooth outer wall is conducive to seal.The outer wall in described needle stage casing 32 is provided with screw thread, is used for matching with the internal thread of described valve needle cover 2, thereby can by the rotation needle, makes needle realize advancing and withdrawing from valve needle cover.Described needle top section 33, it is little coniform of a large tail, adopts coniform being conducive to be complementary with the shape in described the second hole, when needle is pushed into, this needle top section enters in described the second hole and seals with the second hole formation face, thereby shutoff is carried out in the second hole.Certainly, described needle top section also can adopt other shapes, as long as can any other mode that the second hole seals all be can be applicable among the present invention.Better, can also be provided with the devices such as handwheel or handle on the described needle rear and conveniently needle is rotated.
Described seal plug 4 is sheathed on the described needle 3, mainly is to be enclosed within the needle rear, and the effect of seal plug 4 is, inside and the outside of valve needle cover 2 completely cut off, and avoids fluid leakage in the cylindrical shell in environment.As shown in Figure 6, the inside of sealing plug 4 is provided with the groove 41 of at least one annular, and is preferred, is provided with two or more.And in this groove 41, being provided with seal ring, the sealing ring is elastic sealing ring, for example is the seal ring of rubber, silicone rubber material.Match with the smooth surface of needle rear 31 by seal ring and can realize the effect that seals, guarantee that fluid can not reveal from the surface of contact of needle and seal plug.The cross section of described seal plug 4 is convex shape, and its convex portion embeds described valve needle cover 2, and is tightly connected with described stuffing box gland formation.Described being tightly connected can be realized between seal plug and valve needle cover seal ring being set, and also seal plug directly can be welded on the end of described valve needle cover.Further, the structure that described seal plug and valve needle cover is made of one piece as a whole also is one embodiment of the present of invention.
Better, the dead in line of the first hole described in above-described embodiment, the second hole, valve needle cover, needle and seal plug.
Better, can further include cutting ferrule nut 5 in above-described embodiment, its inwall is provided with internal thread; The outer wall of described valve needle cover 2 is provided with outside thread, and the internal thread by the cutting ferrule nut matches with the outside thread of described valve needle cover, and described seal plug 4 is fixed on described valve needle cover end.When described seal plug 4 and valve needle cover 2 form be tightly connected after, this cutting ferrule nut-welding on described cylindrical shell or valve needle cover, is prevented from that cutting ferrule nut 5 from being outwarded winding by accident to cause fluid leakage.
Better, can also a part 6 be set in described the second hole 12, the part of this part 6 stretches into the second hole, as the structure that seals with above-mentioned needle end section.Better, above-mentioned part 6 can be GAUGE CONNECTOR.
Better, also comprise in above-described embodiment: assembly department 13, be arranged on the cylinder body outer wall at place, described the second hole, this assembly department has internal thread or outside thread, is used for according to other equipment or instrument.
The described valve of above-mentioned each embodiment of the present invention, it is installed on the fluid line in use, flow in the pipeline is through the cylindrical shell of invention, fluid communicates with the external world by the second hole, so, the instrument or the equipment that are arranged on the second hole can directly touch fluid, for example, can measure the pressure of cylindrical shell inner fluid.When needs carry out detachable maintaining to external instrument or equipment, will rotate needle, needle is advanced, and make needle top section prop up the second hole and with its formation sealing configuration.At this moment, namely can dismantle external instrument or equipment, and the fluid in the cylindrical shell can be to outward leakage.
As shown in Figure 7, embodiments of the invention also propose a kind of manometer, and it comprises pressure gauge 200 and the described valve 100 of above-mentioned arbitrary embodiment, and described pressure gauge is installed on the cylinder body outer wall at place, described the second hole.In use, valve 100 is installed on the fluid line 300, and becomes the part of pipeline.This manometer, because described pressure gauge 200 is directly installed on the valve 100, as many as being directly installed on the fluid line, valve and the side line part that must arrange in the prior art have been omitted, thereby make pressure gauge with nearest distance join in pipeline, and because the very short heat that it can receive from pipeline of distance conducts, avoided the frozen situation generation of fluid in cold environment, guarantee the normal operation of manometer.When pressure gauge 200 was dismantled, the needle rotation with valve 100 made needle that the second hole is sealed, and then just can dismantle pressure gauge.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. valve is characterized in that it comprises:
Cylindrical shell is offered the first hole and the second hole in the sidewall symmetry of cylindrical shell;
Valve needle cover is tubular, is arranged on described cylinder body outer wall, and its axis overlaps with described the first axially bored line;
Needle, it is arranged in the above-mentioned valve needle cover; And
Seal plug is sheathed on the described needle.
2. valve according to claim 1 is characterized in that, the dead in line of described the first hole, the second hole, valve needle cover, needle and seal plug.
3. valve according to claim 1 is characterized in that, described needle comprises:
Needle top section, it is coniform;
The needle stage casing, its outer surface is provided with screw thread; And
Needle rear, its outer surface are smooth surface.
4. valve according to claim 3 is characterized in that, described seal plug inwall is provided with at least one annular recess, is provided with seal ring in the described groove.
5. valve according to claim 4 is characterized in that, the cross section of described seal plug is convex shape, and its convex portion embeds described valve needle cover, and is tightly connected with described stuffing box gland formation.
6. valve according to claim 3 is characterized in that, the internal surface in described the second hole forms coniform, and is complementary with described needle top section.
7. valve according to claim 1 is characterized in that, it also comprises:
Assembly department is arranged on the cylinder body outer wall at place, described the second hole, and this assembly department has internal thread or outside thread.
8. each described valve is characterized in that according to claim 1-7, also comprises:
The cutting ferrule nut, its inwall is provided with screw thread;
The outer wall of described valve needle cover is provided with screw thread, and the screw thread by the cutting ferrule nut matches with the screw thread of described valve needle cover, and described seal plug is fixed on described valve needle cover end.
9. valve according to claim 8 is characterized in that, described cutting ferrule nut-welding is in described cylindrical shell or valve needle cover.
10. a manometer is characterized in that, it comprises pressure gauge and each described valve of claim 1-9, and described pressure gauge is installed on the cylinder body outer wall at place, described the second hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105420166A CN103016751A (en) | 2012-12-14 | 2012-12-14 | Valve and pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105420166A CN103016751A (en) | 2012-12-14 | 2012-12-14 | Valve and pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103016751A true CN103016751A (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105420166A Pending CN103016751A (en) | 2012-12-14 | 2012-12-14 | Valve and pressure measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693205A (en) * | 2020-07-15 | 2020-09-22 | 南京沃天科技有限公司 | Pressure sensor convenient to maintain and replace |
| CN112444340A (en) * | 2019-09-03 | 2021-03-05 | 中国石油天然气股份有限公司 | Pressure measurement is with overlock device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1100055A (en) * | 1964-06-09 | 1968-01-24 | Michelin & Cie | Improvements in or relating to pressure-measuring apparatus |
| DE2915561A1 (en) * | 1979-04-18 | 1980-10-23 | Erich Brosa | High pressure pick-up for weapons applications - has stick-free piston with elastic grooved seal and with annular recess in housing near piston end |
| CN2085957U (en) * | 1990-11-26 | 1991-10-02 | 大庆石油管理局第六采油厂 | Anti-freezing pressure gage in pipe |
| CN2089069U (en) * | 1991-03-05 | 1991-11-20 | 林文政 | Frost proof pressure gauge base for water well |
| CN201429487Y (en) * | 2009-06-28 | 2010-03-24 | 程铁航 | Freeze-proof pressure gage jointer |
| CN201964995U (en) * | 2011-03-03 | 2011-09-07 | 中国石油天然气股份有限公司 | Antifreezing joint for pressure gauge |
| CN202547857U (en) * | 2012-04-13 | 2012-11-21 | 黄祥豹 | Oil pressure device for oil-water wells |
| CN202937824U (en) * | 2012-12-14 | 2013-05-15 | 宁秀文 | Valve and pressure measuring device |
-
2012
- 2012-12-14 CN CN2012105420166A patent/CN103016751A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1100055A (en) * | 1964-06-09 | 1968-01-24 | Michelin & Cie | Improvements in or relating to pressure-measuring apparatus |
| DE2915561A1 (en) * | 1979-04-18 | 1980-10-23 | Erich Brosa | High pressure pick-up for weapons applications - has stick-free piston with elastic grooved seal and with annular recess in housing near piston end |
| CN2085957U (en) * | 1990-11-26 | 1991-10-02 | 大庆石油管理局第六采油厂 | Anti-freezing pressure gage in pipe |
| CN2089069U (en) * | 1991-03-05 | 1991-11-20 | 林文政 | Frost proof pressure gauge base for water well |
| CN201429487Y (en) * | 2009-06-28 | 2010-03-24 | 程铁航 | Freeze-proof pressure gage jointer |
| CN201964995U (en) * | 2011-03-03 | 2011-09-07 | 中国石油天然气股份有限公司 | Antifreezing joint for pressure gauge |
| CN202547857U (en) * | 2012-04-13 | 2012-11-21 | 黄祥豹 | Oil pressure device for oil-water wells |
| CN202937824U (en) * | 2012-12-14 | 2013-05-15 | 宁秀文 | Valve and pressure measuring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444340A (en) * | 2019-09-03 | 2021-03-05 | 中国石油天然气股份有限公司 | Pressure measurement is with overlock device |
| CN111693205A (en) * | 2020-07-15 | 2020-09-22 | 南京沃天科技有限公司 | Pressure sensor convenient to maintain and replace |
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| PB01 | Publication | ||
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Application publication date: 20130403 |