CN203322401U - One-way pressure valve - Google Patents
One-way pressure valve Download PDFInfo
- Publication number
- CN203322401U CN203322401U CN201220568462XU CN201220568462U CN203322401U CN 203322401 U CN203322401 U CN 203322401U CN 201220568462X U CN201220568462X U CN 201220568462XU CN 201220568462 U CN201220568462 U CN 201220568462U CN 203322401 U CN203322401 U CN 203322401U
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- Prior art keywords
- valve
- section
- hole
- way pressure
- external diameter
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Abstract
The utility model discloses a one-way pressure valve which comprises a valve body, a valve seat with a through hole and a valve plug, wherein the valve body is provided with a valve cavity, and an air inlet and an air outlet which are communicated with the valve cavity; a seal spring and the valve plug are arranged inside the valve cavity sequentially; the valve seat is fixed at the end part of the valve cavity on the air inlet side of the valve body through a press cover in threaded connection with the valve body; the valve seat is hermetically connected with the valve body; the press cover is provided with a through hole corresponding to the through hole of the valve seat; the valve plug is composed of two sections with different outer diameters; the section with the smaller outer diameter is provided with an axial blind hole and a radial through hole communicated with the axial blind hole and hermetically connected with the through hole of the valve seat in a sliding manner. The one-way pressure valve provided by the utility model has the characteristic of excellent sealing performance.
Description
Technical field
The utility model relates to valve technology field, specifically a kind of one-way pressure valve for seal of tube detection facility.
Background technique
In industrial gas oil, the oil casing thread need to have good sealability.So need to the tightness of tubing string be detected.Carry out when tightness detects forming fast at oil casing thread position the high-pressure sealed gas space, thereby detect at the outside leak detector that uses of screw thread the seal of tube detection facility whether gas is revealed.And one of vitals of this detection facility is exactly one-way pressure valve, in order to reach certain unidirectional opening of pressure ability in certain space, gas is passed through.And existing valve is not suitable for using in seal of tube detection facility.There are the shortcomings such as poorly sealed, use inconvenience more.
In view of this, the inventor is actively studied and is innovated, and has finally invented a kind of one-way pressure valve of novel structure, to solve problems of the prior art, makes it more have practicability.
The model utility content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of one-way pressure valve, has the characteristics of good seal performance.
In order to solve the problems of the technologies described above, the utility model has adopted following technological scheme:
One-way pressure valve, comprise valve body, valve seat and valve plug with through hole, suction port and air outlet that described valve body has valve pocket and is communicated with valve pocket, set gradually Packing spring and valve plug in described valve pocket, valve seat is fixed in the valve pocket end of suction port one side of valve body by the gland be connected with valve body screw thread, between valve seat and valve body, be tightly connected, gland has the through hole corresponding with the through hole of valve seat, two sections different by external diameter of valve plug form, one section less radial direction through hole that there is axial blind hole and communicate with axial blind hole of external diameter wherein, one section that external diameter is less is connected with the through hole slipper seal of valve seat.
Further, described valve seat comprises thin diameter section and wide section, and the external diameter of thin diameter section is less than the external diameter of wide section, and thin diameter section inserts in valve pocket, and is provided with seal ring between thin diameter section and valve body.
Further, the external diameter of described wide section is greater than the internal diameter of valve pocket, between described thin diameter section and wide section, has transition section, and the external diameter of described transition section is increased gradually by thin diameter section to wide section.
Further, described transition section is taper type.
Further, described valve plug is that polycarbonate (PC) is made.
Further, described gland has the axial cavity of the wide section that holds valve seat.
Further, between different two sections of the external diameter of described valve plug, by the conical surface, connect.
Compared with prior art, the beneficial effects of the utility model are:
One-way pressure valve of the present utility model improves sealing between the two by the mode that adopts valve plug to stretch in valve seat, provides valve plug to have the special construction of axial blind hole and radial direction through hole for this reason.In addition, because the valve seat outer surface has the transition section that external diameter gradually changes, make itself and valve body in conjunction with tightr, sealability is better.
The accompanying drawing explanation
The structure that Fig. 1 is one-way pressure valve of the present utility model is cutd open figure;
The broken away view of the part that Fig. 2 is the utility model one-way pressure valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.
The structure that Fig. 1 is one-way pressure valve of the present utility model is cutd open figure; The broken away view of the part that Fig. 2 is the utility model one-way pressure valve.As depicted in figs. 1 and 2, one-way pressure valve, comprise valve body 1, have valve seat 2 and the valve plug 3 of through hole 201.Suction port 102 and air outlet 103 that valve body 1 has valve pocket 101 and is communicated with valve pocket.Set gradually Packing spring 4 and valve plug 3 in valve pocket 101.Valve seat 2 is fixed in valve pocket 101 ends of suction port 102 1 sides of valve body 1 by the gland 5 be threaded with valve body 1.Between valve seat 2 and valve body 1, be tightly connected, gland 5 has the through hole corresponding with the through hole 201 of valve seat 2 501.Two sections different by external diameter of valve plug 3 form, one section less radial direction through hole 302 that there is axial blind hole 301 and communicate with axial blind hole 301 of external diameter wherein, and one section that external diameter is less is connected with through hole 201 slipper seals of valve seat 2.
As the present embodiment preferably, valve seat 2 comprises thin diameter section 202 and wide section 203, the external diameter of thin diameter section 202 is less than the external diameter of wide section 203, thin diameter section 202 inserts in valve pocket 101, and thin diameter section 202 upwards has annular seal groove 204 in week, be provided with seal ring 6 in annular seal groove 204, for the sealing between valve seat 2 and valve body 1.The external diameter of wide section 203 is greater than the internal diameter of valve pocket 101, between thin diameter section 201 and wide section 203, has transition section 205, and the external diameter of transition section 205 is increased gradually by thin diameter section to wide section.Transition section is taper type.Equally, valve plug 3 also has the structure identical with the transition section 205 of valve seat 2, between different two sections of the external diameter of valve plug 3, by the conical surface, connects.Can increase the sealability between valve plug 3 and valve seat.Valve plug 3 is made for polycarbonate (PC).Gland 5 has the axial cavity 502 of the wide section that holds valve seat.The valve body of one-way pressure valve of the present utility model is not limited to specifically construct in the present embodiment and accompanying drawing, as long as the valve pocket that miscellaneous part can be installed and suction port and the air outlet be communicated with valve pocket are provided.In concrete the use, as in the seal for pipe joints detection facility, valve body can be cylindrical body, and has the through hole parallel with valve pocket and through hole radially etc. to realize the purpose set rapidly in detected pipeline.
When gas is greater than the compressive force of Packing spring from suction port to the valve plug applied pressure, the gas push valve plug slides with respect to valve seat.When the radial hole of valve plug, when exposing in the through hole of obturating plug, gas is conducting just.Otherwise, when power valve plug applied when gas is less than the compressive force of Packing spring, the valve plug reverse slide, make gas by circulation.
Above embodiment is only exemplary embodiment of the present utility model, is not used in restriction the utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the utility model in essence of the present utility model and protection domain, this modification or be equal to replacement and also should be considered as dropping in protection domain of the present utility model.
Claims (7)
1. one-way pressure valve, it is characterized in that, comprise valve body, valve seat and valve plug with through hole, suction port and air outlet that described valve body has valve pocket and is communicated with valve pocket, set gradually Packing spring and valve plug in described valve pocket, valve seat is fixed in the valve pocket end of suction port one side of valve body by the gland be connected with valve body screw thread, between valve seat and valve body, be tightly connected, gland has the through hole corresponding with the through hole of valve seat, two sections different by external diameter of valve plug form, one section less radial direction through hole that there is axial blind hole and communicate with axial blind hole of external diameter wherein, one section that external diameter is less is connected with the through hole slipper seal of valve seat.
2. one-way pressure valve according to claim 1, is characterized in that, described valve seat comprises thin diameter section and wide section, and the external diameter of thin diameter section is less than the external diameter of wide section, and thin diameter section inserts in valve pocket, and is provided with seal ring between thin diameter section and valve body.
3. one-way pressure valve according to claim 2, is characterized in that, the external diameter of described wide section is greater than the internal diameter of valve pocket, between described thin diameter section and wide section, has transition section, and the external diameter of described transition section is increased gradually by thin diameter section to wide section.
4. one-way pressure valve according to claim 3, is characterized in that, described transition section is taper type.
5. one-way pressure valve according to claim 1, is characterized in that, described valve plug is that polycarbonate (PC) is made.
6. one-way pressure valve according to claim 1, is characterized in that, described gland has the axial cavity of the wide section that holds valve seat.
7. one-way pressure valve according to claim 1, is characterized in that, between different two sections of the external diameter of described valve plug, by the conical surface, connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220568462XU CN203322401U (en) | 2012-10-31 | 2012-10-31 | One-way pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220568462XU CN203322401U (en) | 2012-10-31 | 2012-10-31 | One-way pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322401U true CN203322401U (en) | 2013-12-04 |
Family
ID=49661753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220568462XU Expired - Lifetime CN203322401U (en) | 2012-10-31 | 2012-10-31 | One-way pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203322401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570681A (en) * | 2016-03-15 | 2016-05-11 | 凯迈（洛阳）气源有限公司 | Valve seat and cylinder valve using same |
| CN113969886A (en) * | 2020-07-22 | 2022-01-25 | 陕西卓远能源科技有限公司 | Tubular oil well pump |
-
2012
- 2012-10-31 CN CN201220568462XU patent/CN203322401U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570681A (en) * | 2016-03-15 | 2016-05-11 | 凯迈（洛阳）气源有限公司 | Valve seat and cylinder valve using same |
| CN113969886A (en) * | 2020-07-22 | 2022-01-25 | 陕西卓远能源科技有限公司 | Tubular oil well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
|
| CX01 | Expiry of patent term |