CN202108997U

CN202108997U - Self-closing pressure gauge valve

Info

Publication number: CN202108997U
Application number: CN2011201956334U
Authority: CN
Inventors: 朱建雄
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2011-06-10
Filing date: 2011-06-10
Publication date: 2012-01-11
Anticipated expiration: 2021-06-10

Abstract

The self-closing pressure gauge valve is applied to a pipeline for installing a pressure gauge. An inner barrel is fixed on the upper end of the outer barrel through threads, and the outer wall of the lower end of the inner barrel is connected with a filter barrel; a sliding support is arranged in the inner cylinder, an annular flat plate is arranged at the upper part of the sliding support, a sliding pipe is arranged in the middle of the sliding support, a sealing gasket is arranged in an annular tray and sleeved on the sliding pipe of the sliding support, and a hole is formed in a sliding rod; the annular flat plate at the upper part of the sliding support slides on the upper plane of the outer cylinder, the sliding pipe at the middle part of the sliding support penetrates through the lower end of the inner cylinder, and the tray at the lower end of the sliding pipe is arranged in the filter barrel; a compression spring is arranged between the lower end surface of the spring seat and the lower step surface of the inner cylinder. In order to improve the sealing performance, a sealing ring is arranged between the outer cylinder and the inner cylinder. The effect is as follows: after the pressure gauge is installed, the automatic opening state is realized, after the pressure gauge is disassembled, the automatic closing state is realized, the blowout prevention effect is effectively realized, and the correct work of the pressure gauge is ensured.

Description

The self-closing pressure meter valve

Technical field

The utility model relates to pressure gauge, and particularly a kind of being installed on the various pipelines played the shutoff valve effect that is connected with pressure gauge, just can close pipeline automatically without closing pressure table stop valve behind the dismounting pressure gauge, prevents to reveal.

Background technique

At present, on gas wellhead equipment and various pipeline and equipment,, inside screw stop valve and pressure gauge are installed on pipeline in order to measure pressure inside; When changing pressure gauge, need close stop valve and just can dismantle, if stop valve leaks fault in occurring, with the entail dangers to person and device security; Simultaneously, again befouling environment, have disaster hidden-trouble.

The model utility content

The purpose of the utility model is: a kind of self-closing pressure meter valve is provided, does not need just ability dismounting pressure gauge of closed front end stop valve, effectively prevent the frequent switch of valve, interior leakage that causes and accessory damage and cause thorn to leak.

The technological scheme that the utility model adopts is: the self-closing pressure meter valve; Mainly form by urceolus, slip holder, inner core, pressure spring, filter vat and sealing gasket; There is internal thread lower end at urceolus, can be connected on the pipeline, it is characterized in that: have pressure gauge that screw thread is installed in the upper end of cylinder bodily form urceolus; Be fixed with an inner core at urceolus upper end snail line, connect a filter vat on the lower end outer wall of inner core; Filter vat has the end, and the outer wall of filter vat has inlet hole; Described inner core is stepped, and the end is arranged at inner core top, and inner core has center hole at the bottom of the top; The holder of sliding is arranged in inner core, and the top of described slip holder has ring dull and stereotyped, and there is sliding tube at the holder middle part of sliding; The sliding tube lower end is fixed with the ring pallet; In the ring pallet, sealing gasket is arranged, sealing gasket is enclosed within on the sliding tube of the holder of sliding, and is porose on sliding bar; The position in hole is above sealing gasket; The dull and stereotyped cunning on plane on the urceolus of ring of sliding and holding in the palm top, the sliding tube in the middle part of the holder of sliding passes the lower end of inner core, and the pallet of sliding tube lower end is in filter vat; Fixing ring spring seat on the sliding tube at holder middle part that slides; Between the lower end surface of spring seat and inner core leave from office terrace, a pressure spring is arranged.

In order to improve sealing, between urceolus and inner core, seal ring is arranged.

The beneficial effect of the utility model: the utility model self-closing pressure meter valve behind the setting pressure table, is in automatic opening state; After unloading pressure gauge; Be in automatic closed condition, effectively play the blowout prevention effect, filter vat is arranged in the ingress; Can effectively prevent contamination and plugging, guarantee manometric correct work.

Description of drawings

Fig. 1 is the utility model self-closing pressure meter valve structural profile schematic representation.

Among the figure, the holder of sliding of 1-pressure gauge, 2-pressure gauge pad, 3-urceolus, 4-, 5-inner core, 6-seal ring, 7-pressure spring, 8-filter vat, 9-sealing gasket.

Embodiment

Embodiment 1: with a self-closing pressure meter valve is example, and the utility model is done further explain.

Consult Fig. 1.The utility model self-closing pressure meter valve mainly is made up of urceolus 3, slide holder 4, inner core 5, seal ring 6, pressure spring 7, filter vat 8 and sealing gasket 9.In the lower end of urceolus 3 the ZG1/2 internal thread is arranged.There are M20 * 1.5 pressure gauges that screw thread is installed in the upper end of cylinder bodily form urceolus 3, are fixed with an inner core 5, seal ring 6 is arranged between inner core 5 at urceolus 3 at urceolus 3 upper end screw threads.Connect a filter vat 8 on the lower end outer wall of inner core 5; Filter vat 8 has the end, and the outer wall of filter vat 8 has the air inlet aperture.

Described inner core 5 is stepped, and the end is arranged at inner core 5 tops, and inner core has center hole at the bottom of 5 tops; The holder 4 of sliding is arranged in inner core 5.

The top of described slip holder 4 has ring dull and stereotyped, and there is sliding tube at holder 4 middle parts of sliding, and the sliding tube lower end is fixed with the ring pallet; Sealing gasket 9 is arranged in the ring pallet; Sealing gasket 9 is enclosed within on the sliding tube of the holder 4 of sliding, and two holes are arranged on sliding bar, and the position in hole is above sealing gasket 9.The dull and stereotyped cunning on plane on the urceolus 3 of ring of sliding and holding in the palm 4 tops, the sliding tube at holder 4 middle parts of sliding passes the lower end of inner core 5, and the pallet of sliding tube lower end is in filter vat 8; Fixing dull and stereotyped ring spring seat on the sliding tube at holder 4 middle parts that slides; Between the lower end surface of spring seat and inner core 5 leave from office terraces, a pressure spring 7 is arranged.

The principle of summary self-closing pressure meter valve.Consult Fig. 1.When dismounting pressure gauge 1, under the elastic reaction of pressure spring 7, make the holder 4 of sliding tightly be pressed in the lower end of inner core 5, sealing gasket 9 is realized sealing, prevents that effectively the flow graph of pressure gauge 1 in the dismounting rear line from leaking, and plays the safety protection effect.Along with pressure gauge screws in gradually, pressure gauge 1 promotes to slide with pressure gauge pad 2 and asks 4 to move down when setting pressure table 1, sealing gasket 9 depressurization states, the steam flow of conducting simultaneously passage.

Claims

1. self-closing pressure meter valve; Mainly form by urceolus (3), slide holder (4), inner core (5), pressure spring (7), filter vat (8) and sealing gasket (9); There is internal thread lower end at urceolus (3); It is characterized in that: have pressure gauge that screw thread is installed in the upper end of cylinder bodily form urceolus (3), screw thread is fixed with an inner core (5) in urceolus (3) upper end, connects a filter vat (8) on the lower end outer wall of inner core (5); Filter vat (8) has the end, and the outer wall of filter vat (8) has inlet hole; Described inner core (5) is stepped, and the end is arranged at inner core (5) top, and inner core (5) has center hole at the bottom of the top; The holder (4) of sliding is arranged in inner core (5); The top of described slip holder (4) has ring dull and stereotyped; Slide and ask (4) middle part that sliding tube is arranged, the sliding tube lower end is fixed with the ring pallet, and sealing gasket (9) is arranged in the ring pallet; Sealing gasket (9) is enclosed within on the sliding tube of the holder (4) of sliding, and is porose on sliding bar; The position in hole is in the top of sealing gasket (9); The dull and stereotyped cunning on the last plane of urceolus (3) of ring of sliding and holding in the palm (4) top, the sliding tube in the middle part of the holder (4) of sliding passes the lower end of inner core (5), and the pallet of sliding tube lower end is in filter vat (8); Fixing ring spring seat on the sliding tube at holder (4) middle part that slides; Between the lower end surface of spring seat and inner core (5) leave from office terrace, a pressure spring (7) is arranged.

2. self-closing pressure meter valve according to claim 1 is characterized in that: between urceolus (3) and inner core (5), seal ring (6) is arranged.