CN217716827U - Air tightness detection device for liquefied petroleum gas cylinder valve - Google Patents
Air tightness detection device for liquefied petroleum gas cylinder valve Download PDFInfo
- Publication number
- CN217716827U CN217716827U CN202222066065.9U CN202222066065U CN217716827U CN 217716827 U CN217716827 U CN 217716827U CN 202222066065 U CN202222066065 U CN 202222066065U CN 217716827 U CN217716827 U CN 217716827U
- Authority
- CN
- China
- Prior art keywords
- piston
- thimble
- cylinder
- valve body
- piston cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model belongs to the technical field of liquefied petroleum gas cylinder valve check out test set, refer in particular to an airtight detection device for liquefied petroleum gas cylinder valve, including thimble and piston cylinder, piston cylinder's flexible end department is equipped with the piston valve body that forms the inlet plenum with thimble sliding fit, has seted up the inlet port on the inlet plenum, be equipped with on the thimble with the centre bore of inlet plenum intercommunication and the pressure sensor who detects centre bore pressure, be connected fixedly around thimble and the piston cylinder through coupling assembling, and form inclosed installation cavity between thimble and the piston cylinder, piston cylinder's flexible end and piston valve body all set up in the installation cavity. The utility model discloses simple structure, through the installation cavity that forms with piston cylinder's flexible end and piston valve body setting between thimble and piston cylinder, simultaneously, the airtight design of installation cavity for piston cylinder's flexible end and piston valve body can avoid external interference completely, in order to ensure pressure sensor's detection precision.
Description
The technical field is as follows:
the utility model belongs to the technical field of liquefied petroleum gas cylinder valve check out test set, refer in particular to an airtight detection device for liquefied petroleum gas cylinder valve.
Background art:
liquefied petroleum gas cylinder valve is the important accessory that people used liquefied gas, it need carry out strict gas tightness test when processing man-hour in production, in order to ensure to possess the airtight performance that accords with the standard, the liquefied gas valve high pressure that has disclosed in current chinese utility model patent (grant No. CN 205826246U) seals detection device, it is provided with the ring seal including the head of the thimble that has the centre bore, the rear portion is provided with the inlet chamber, upper portion is provided with the pressure sensor who detects centre bore pressure, be provided with the piston valve of closed centre bore and the inlet port with the inlet chamber inner chamber intercommunication in the inlet chamber, the front end of mount pad is provided with first cylinder and guide bar or guide cylinder, the rear end of thimble is fixed with guide cylinder or guide bar that slides on guide bar or guide cylinder, the reciprocating motion of first cylinder drive piston valve is in order to open and close the centre bore, form liquefied gas valve high pressure and seal the detection head.
The first cylinder and one end of the driven piston valve are directly exposed to the outside, the piston valve is matched with the air inlet chamber through two sealing rings to achieve sealing of the air inlet chamber, and in the actual use process, the first cylinder and one end of the driven piston valve are easily interfered by the outside, so that air tightness between the piston valve and the air inlet chamber is affected, and the pressure detection precision of the pressure sensor in the air inlet chamber is further affected.
The invention content is as follows:
the utility model aims at providing an airtight detection device for liquefied petroleum gas cylinder valve, it sets up piston cylinder and piston valve body in an inclosed cavity, effectively protects piston cylinder and piston valve body to avoid external disturbance.
The utility model discloses a realize like this:
the utility model provides an airtight detection device for liquefied petroleum gas cylinder valve, including thimble and piston cylinder, the flexible end department of piston cylinder is equipped with the piston valve body that forms the inlet chamber with thimble sliding fit, has seted up the inlet port on the inlet chamber, is equipped with the centre bore that communicates with the inlet chamber on the thimble and detects the pressure sensor of centre bore pressure, the thimble is connected fixedly through coupling assembling around with the piston cylinder, and forms inclosed installation cavity between thimble and the piston cylinder, the flexible end and the piston valve body of piston cylinder all set up in the installation cavity.
In the above-mentioned airtight detection device for liquefied petroleum gas cylinder valve, the coupling assembling is including seting up the connect the through-hole on the piston cylinder, and the fastener passes through the connect the through-hole and fixes with thimble screw thread.
In foretell an airtight detection device for liquefied petroleum gas cylinder valve, the storage tank has been seted up to the rear end face of thimble, and the piston groove has been seted up to the tank bottom face department of storage tank, the piston cylinder lid is established in the notch department of storage tank and is formed between storage tank and the piston cylinder the installation cavity, piston valve body plunger is connected in the piston groove, and forms between piston valve body and the piston groove the inlet plenum.
In the above air tightness detecting device for the liquefied petroleum gas cylinder valve, the piston cylinder is provided with a positioning protrusion which is in insertion fit with the accommodating groove.
In the above air tightness detecting device for the liquefied petroleum gas cylinder valve, the piston valve body located in the air inlet chamber is provided with the inserting convex column which can be inserted at the corresponding port of the central hole.
In the above air tightness detection device for the liquefied petroleum gas cylinder valve, the first sealing ring is sleeved on the insertion convex column, and a contact surface with a conical surface structure is arranged at the edge of the port where the central hole is communicated with the air inlet chamber; or the air inlet chamber is provided with a contact surface with a plane structure, and the first sealing ring can be in sealing fit with the piston valve body.
In the above-mentioned gas tightness detection device for the lpg cylinder valve, a second sealing ring is disposed between the outer wall surface of the piston valve body and the corresponding wall surface of the thimble.
Compared with the prior art, the utility model outstanding advantage is:
the utility model discloses simple structure, through the flexible end with piston cylinder and piston valve body setting in the installation cavity that forms between thimble and piston cylinder, simultaneously, the airtight design of installation cavity for piston cylinder's flexible end and piston valve body can avoid external interference completely, in order to ensure pressure sensor's detection precision.
Description of the drawings:
fig. 1 is an overall perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
fig. 3 is a general cross-sectional view of the contact surface of the present invention in a plane;
fig. 4 is a whole cross-sectional view of the present invention in which the contact surface is a conical surface.
In the figure: 1. a thimble; 3. a piston cylinder; 4. a piston valve body; 5. an air intake chamber; 6. an air inlet; 7. a central bore; 8. a pressure sensor; 9. a mounting cavity; 10. a connecting through hole; 11. positioning the projection; 12. inserting the convex column; 13. a first sealing ring; 14. a contact surface; 15. and a second sealing ring.
The specific implementation mode is as follows:
the invention will now be further described with reference to specific embodiments, and with reference to figures 1 to 4:
the utility model provides an airtight detection device for liquefied petroleum gas cylinder valve, including thimble 1 and piston cylinder 3, the flexible end department of piston cylinder 3 is equipped with and forms the piston valve body 4 of inlet chamber 5 with thimble 1 sliding fit, has seted up inlet port 6 on the inlet chamber 5, is equipped with the centre bore 7 that communicates with the inlet chamber 5 on the thimble 1 and detects the pressure sensor 8 of 7 pressures of centre bore, thimble 1 is connected fixedly around with piston cylinder 3 through coupling assembling, and forms inclosed installation cavity 9 between thimble 1 and the piston cylinder 3, the flexible end of piston cylinder 3 and piston valve body 4 all set up in installation cavity 9. Wherein, the theory of operation of airtight detection device does: the thimble 1 and the central hole 7 are matched with the air inlet end or the air outlet end of the liquefied petroleum gas cylinder valve, high-pressure gas is injected into the air inlet chamber 5 from the air inlet hole 6, so that the high-pressure gas flows to the air inlet end or the air outlet end of the liquefied petroleum gas cylinder valve through the central hole 7, then the piston cylinder 3 drives the piston valve body 4 to move forwards and shield the air inlet hole 6, and at the moment, the pressure sensor 8 detects whether the air pressure in the central hole 7 changes or not so as to realize the air tightness detection of the liquefied petroleum gas cylinder valve.
Namely the utility model discloses simple structure, through setting up the flexible end of piston cylinder 3 and piston valve body 4 in the installation cavity 9 that forms between thimble 1 and piston cylinder 3, simultaneously, the airtight design of installation cavity 9 for the flexible end of piston cylinder 3 and piston valve body 4 can avoid external interference completely, in order to ensure pressure sensor 8's detection precision.
Furthermore, the connecting assembly may adopt a common structure on the market, such as the internal and external threads being fixed in a matching manner, and in this embodiment, in order to simplify the processing technology and the assembling operation, the structure adopted by the connecting assembly is: the connecting assembly comprises a connecting through hole 10 formed in the piston cylinder 3, and the fastener is fixed with the ejector pin 1 through threads penetrating through the connecting through hole 10.
Furthermore, in the present embodiment, the specific structure formed by the installation cavity 9 and the intake chamber 5 is as follows: the storage tank has been seted up to the rear end face of thimble 1, and the piston groove has been seted up to the tank bottom face department of storage tank, 3 lids of piston cylinder are established in the notch department of storage tank and are formed between storage tank and the piston cylinder 3 installation cavity 9, 4 plungers of piston valve body are connected in the piston groove, and are formed between piston valve body 4 and the piston groove intake chamber 5.
In addition, in order to enable the piston cylinder 3 to be quickly assembled on the accommodating groove, a positioning protrusion 11 which is in plug-in fit with the accommodating groove is arranged on the piston cylinder 3.
In addition, in order to improve the matching stability between the piston valve body 4 and the air inlet chamber 5, the piston valve body 4 positioned in the air inlet chamber 5 is provided with a plug-in convex column 12 which can be inserted at the corresponding port of the central hole 7.
Furthermore, when the liquefied petroleum gas bottle valve is subjected to airtight detection, in order to improve the sealing property between the piston valve body 4 and the thimble 1, the first sealing ring 13 is sleeved on the inserting convex column 12, and a contact surface 14 with a conical surface structure is arranged at the edge of a port where the central hole 7 is communicated with the air inlet chamber 5; meanwhile, the air inlet chamber 5 may be provided with a contact surface 14 having a planar structure, and the first seal ring 13 may be in sealing engagement between the contact surface 14 and the piston valve body 4.
And a second sealing ring 15 is arranged between the outer wall surface of the piston valve body 4 and the corresponding wall surface of the thimble 1. In this embodiment, two sealing rings 15 are arranged at intervals in front of and behind each other.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides an airtight detection device for liquefied petroleum gas cylinder valve, including thimble (1) and piston cylinder (3), the flexible end department of piston cylinder (3) is equipped with piston valve body (4) with thimble (1) sliding fit and formation inlet chamber (5), inlet port (6) have been seted up on inlet chamber (5), be equipped with centre bore (7) with inlet chamber (5) intercommunication on thimble (1) to and detect pressure sensor (8) of centre bore (7) pressure, its characterized in that: thimble (1) is connected fixedly through coupling assembling around with piston cylinder (3), and forms inclosed installation cavity (9) between thimble (1) and piston cylinder (3), the flexible end and piston valve body (4) of piston cylinder (3) all set up in installation cavity (9).
2. The airtightness detection apparatus for an lpg cylinder valve as set forth in claim 1, wherein: the connecting assembly comprises a connecting through hole (10) formed in the piston cylinder (3), and the fastener is in threaded fixation with the ejector pin (1) through the connecting through hole (10).
3. The airtightness detection apparatus for an lpg cylinder valve as set forth in claim 1, wherein: the storage tank has been seted up to the rear end face of thimble (1), and the piston groove has been seted up to the tank bottom face department of storage tank, establish in the notch department of storage tank and form between storage tank and piston cylinder (3) lid installation cavity (9), piston valve body (4) plunger is connected in the piston groove, and forms between piston valve body (4) and the piston groove inlet chamber (5).
4. The airtightness detection apparatus for an lpg cylinder valve as set forth in claim 1, wherein: and a positioning bulge (11) which is in plug-in fit with the containing groove is arranged on the piston cylinder (3).
5. The airtightness detection apparatus for an lpg cylinder valve as set forth in claim 1, wherein: and a plug-in convex column (12) which can be inserted at the corresponding port of the central hole (7) is arranged on the piston valve body (4) in the air inlet chamber (5).
6. The airtightness detection apparatus for an lpg cylinder valve as set forth in claim 5, wherein: a first sealing ring (13) is sleeved on the inserting convex column (12), and a contact surface (14) with a conical surface structure is arranged at the edge of a port where the central hole (7) is communicated with the air inlet chamber (5); or the air inlet chamber (5) is provided with a contact surface (14) with a plane structure, and the first sealing ring (13) can be in sealing fit between the contact surface (14) and the piston valve body (4).
7. The airtightness detection apparatus for an lpg cylinder valve as set forth in claim 1, wherein: and a second sealing ring (15) is arranged between the outer wall surface of the piston valve body (4) and the corresponding wall surface of the thimble (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222066065.9U CN217716827U (en) | 2022-08-05 | 2022-08-05 | Air tightness detection device for liquefied petroleum gas cylinder valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222066065.9U CN217716827U (en) | 2022-08-05 | 2022-08-05 | Air tightness detection device for liquefied petroleum gas cylinder valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217716827U true CN217716827U (en) | 2022-11-01 |
Family
ID=83785670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222066065.9U Active CN217716827U (en) | 2022-08-05 | 2022-08-05 | Air tightness detection device for liquefied petroleum gas cylinder valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217716827U (en) |
-
2022
- 2022-08-05 CN CN202222066065.9U patent/CN217716827U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217716827U (en) | Air tightness detection device for liquefied petroleum gas cylinder valve | |
| JP2001153033A (en) | Plunger pump | |
| CN217878235U (en) | Airtightness detection device | |
| CN111997805A (en) | Common rail device and high-pressure common rail fuel injection system | |
| CN217637858U (en) | Double-station air tightness detection tool for shell | |
| CN213598104U (en) | High-pressure fluid injection device and internal combustion engine | |
| JP7102494B2 (en) | Air compressor with pressure gauge | |
| CN114435717A (en) | Emulsion pump with air exchange structure | |
| CN212679232U (en) | Gas injection valve and puncture outfit using same | |
| CN208831248U (en) | Air supplementing channel assembly and rotary compressor | |
| CN111266215A (en) | Gas injection device | |
| CN112360656A (en) | High-pressure fluid injection device and internal combustion engine | |
| WO2020186553A1 (en) | Check valve of sub-machine of aerated water machine | |
| CN108096797B (en) | Detachable air charging device | |
| CN219194509U (en) | Wine taking device and sealing assembly thereof | |
| CN107402160B (en) | Self-locking condom blasting device, condom blastmeter system and detection method | |
| CN219629606U (en) | Sphygmomanometer air outlet seat structure and air tightness detection tool for same | |
| CN110925344A (en) | Variable spring assembly | |
| CN209745495U (en) | TGDI cylinder cap gas tightness detects frock | |
| CN213779390U (en) | Air tightness detection mechanism | |
| CN209586643U (en) | Pump head | |
| CN217180791U (en) | Atmosphere detection device integrating detection and sampling | |
| CN209164229U (en) | A kind of pressure maintaining cylinder and air-actuated jaw | |
| CN217762224U (en) | One-way valve for appliance | |
| CN220018840U (en) | Air tightness detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |