CN218510354U - Connecting structure for mass flow controller - Google Patents
Connecting structure for mass flow controller Download PDFInfo
- Publication number
- CN218510354U CN218510354U CN202222564748.7U CN202222564748U CN218510354U CN 218510354 U CN218510354 U CN 218510354U CN 202222564748 U CN202222564748 U CN 202222564748U CN 218510354 U CN218510354 U CN 218510354U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- mass flow
- flow controller
- gasket
- joint
- 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
- Lift Valve (AREA)
Abstract
The utility model relates to a connection structure for mass flow controller for connect mass flow controller and gas circuit pipeline, this connection structure includes: the device comprises a connecting rod, a nut, a first gasket, a second gasket and a mass flow controller joint; the mass flow controller joint is a joint with a tapered hole; the connecting rod comprises an integrally formed connecting rod main body and a connecting rod head. The connecting rod passing through the nut is connected with the nut, the first gasket and the mass flow controller joint with the second gasket placed in the conical hole. Compared with the prior art, the utility model provides a connection structure for mass flow controller can satisfy mass flow controller gas tightness requirement, has avoided because of the atress is uneven, and the concentricity leads to the phenomenon of gas leakage inadequately to assembly method is simple, the quick replacement of being convenient for.
Description
Technical Field
The utility model belongs to the technical field of connection structure technique and specifically relates to a connection structure for mass flow controller is related to.
Background
The mass flow controller for spent fuel post-treatment mainly has the functions of adjusting the flow of compressed air, lifting radioactive feed liquid from a low-level tank to a high-level tank by means of the compressed air, lifting the feed liquid by a process system as required to pour the feed liquid in the operation process, and accurately controlling the flow of the compressed air in a pipeline to control the lifting flow of the radioactive material. During debugging, the phenomenon of air leakage during no-load test of the domestic mass flow controller is found, the function of adjusting the air flow cannot be realized, and the reason is found that the installation of the mass flow controller can not meet the field use requirement. In order to solve the use problem of the gas mass flow controller, a connecting structure for the mass flow controller needs to be designed, the problem of gas leakage of the mass flow controller is solved, and meanwhile, the application of the mass flow controller in the post-processing field is optimized.
The existing connection mode of the mass flow controller is
The cutting sleeve is connected, after the instrument is installed, the no-load test is carried out
When the clamping sleeve is connected with a screwed nut, the front clamping sleeve is attached to a conical opening of an interface of the mass flow controller, and the piston ring and the front clamping sleeve form stress, so that the front clamping sleeve generates certain mechanical deformation and forms sealing with a conical surface of a conical joint of the mass flow controller. The front and rear clamping sleeves of the mass flow controller have higher requirement on the surface roughness of the butt joint pipe during installation, and the on-site gas pipeline does not meet the installation requirement; the connection pipe is required to be in good concentricity with the front clamping sleeve and the rear clamping sleeve during installation, and after the nut is screwed on site, if the concentricity of the connection pipe and the front clamping sleeve is not enough, the front clamping sleeve is stressed unevenly, so that the gas leakage phenomenon of the mass flow controller is caused, and the accurate measurement and the feed liquid lifting control cannot be normally carried out.
The utility model CN 214621353U discloses a joint structure for mass flow meter, including flowmeter main part and clamp splice, the left side of flowmeter main part is connected with the flange, and the left side fixedly connected with adapter of flange to the bottom fixedly connected with sleeve pipe of adapter, sheathed tube bottom is connected with the installation head simultaneously, the internally mounted of installation head has spacing subassembly, and the lower part outside of spacing subassembly is connected with the pipeline to the middle part externally mounted of installation head has large-size nut, the clamp splice is installed in the left and right sides of large-size nut lower extreme, and the inside of two sets of clamp splices all is provided with first pivot, and one side that two sets of first pivots carried on the back mutually all is provided with the second pivot, and the bottom of two sets of second pivots all is connected with the connecting rod simultaneously, this joint structure for mass flow meter, the position of pipeline is injectd through spacing installation pipe, through the cooperation of large-size nut and clamp splice, fixes the pipeline, but this joint structure is complicated, and the required precision is higher, and the installation requirement is higher, is not convenient for quick replacement, and produces gas leakage phenomenon easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a connection structure for mass flow controller in order to overcome the defect that above-mentioned prior art exists, the structure in this scheme can satisfy mass flow controller gas tightness requirement, has avoided because of the atress is uneven, and the concentricity leads to the phenomenon of gas leakage inadequately to have the quick replacement's of being convenient for advantage.
The purpose of the utility model can be realized through the following technical scheme:
the utility model aims at providing a connection structure for mass flow controller, this connection structure includes: the device comprises a connecting rod, a nut, a first gasket, a second gasket and a mass flow controller joint;
the mass flow controller joint is a joint with a tapered hole;
the second gasket is positioned in the conical hole of the mass flow controller joint, and the outer side surface of the second gasket and the conical surface of the conical hole of the mass flow controller joint form contact sealing; the connecting rod comprises an integrally formed connecting rod main body and a connecting rod head, and the circular end face of the connecting rod head, which is far away from the connecting rod main body, is connected with the outlet end of the mass flow controller joint; the inner side surface of the first gasket and the outer side surface of the connecting rod main body form contact sealing, and one circular end surface of the first gasket is connected with the circular end surface of the connecting rod head close to the connecting rod main body; the connecting rod is connected with the mass flow controller joint through the nut.
Further, the diameter of the tapered hole of the mass flow controller joint is the same as that of the second gasket, and when the second gasket is located in the tapered hole of the mass flow controller joint, the diameter error of the gasket is eliminated through the taper of the tapered hole, so that the sealing effect is better achieved.
Preferably, the connecting rod main body and the connecting rod head are both hollow round tubes.
Further preferably, the connecting rod body and the connecting rod head are coaxially connected; the connecting rod main part with the internal diameter of connecting rod head is the same, the external diameter of connecting rod head is greater than the connecting rod main part.
Preferably, the inner diameter of the first washer is the same as the outer diameter of the connecting rod body, and the outer diameter of the first washer is the same as the outer diameter of the connecting rod head.
Preferably, the outward circular end face of the second gasket is coplanar with the outlet face of the mass flow controller fitting.
Further, a first external thread is engraved on the outer side surface of the mass flow controller joint; and a second external thread is engraved on the outer side surface of the connecting rod head.
Further, the internal thread of the nut matches the first and second external threads.
Further, the first gasket seals within the threaded bore of the nut.
Further preferably, the nut includes a nut base and a nut body, the nut body is in threaded connection with the mass flow controller joint and the connecting rod head, and the first gasket forms a contact seal with the nut base.
Preferably, the outer diameter of the connection rod head is the same as the diameter of the outlet face of the tapered bore.
Preferably, the connecting rod is a stainless steel connecting rod.
Preferably, the first gasket is a polytetrafluoroethylene gasket.
Preferably, the second gasket is a polytetrafluoroethylene gasket.
The polytetrafluoroethylene gasket has excellent corrosion resistance and aging resistance, can be safely used for a long time in a wide temperature range, and has good sealing performance.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) The connecting rod among this technical scheme passes the nut and connects with mass flow controller joint, has avoided because of the atress is uneven, and the concentricity leads to the phenomenon of gas leakage inadequately, has strengthened the leakproofness.
2) First gasket among this technical scheme can guarantee that nut and connecting rod have the leakproofness, can play the secondary seal effect under the inconsistent condition of connecting rod, second gasket, mass flow controller joint concentricity simultaneously.
3) The connecting rod among this technical scheme has intensity height, and the resistance to compression is good, corrosion-resistant advantage.
4) The assembly method of the connecting structure for the mass flow controller in the technical scheme is simple and convenient to replace quickly.
Drawings
Fig. 1 is an exploded view of a connection structure for a mass flow controller according to the present invention.
Fig. 2 is a schematic structural diagram of a connecting rod provided in the present technical solution.
The reference numbers in the figures indicate:
1. connecting rod, 2, nut, 3, first gasket, 4, second gasket, 5, mass flow controller connect, 11, connecting rod main part, 12, connecting rod head.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. In the technical scheme, the characteristics such as the part type, the material name, the connection structure and the like which are not explicitly described are all regarded as common technical characteristics disclosed in the prior art.
The present invention will be described in further detail with reference to specific embodiments, which are specific embodiments of a connection structure for a mass flow controller.
As shown in fig. 1 and 2, the present invention provides a connection structure for a mass flow controller, which includes: the device comprises a connecting rod 1, a nut 2, a first gasket 3, a second gasket 4 and a mass flow controller joint 5; the mass flow controller joint 5 is a joint with a tapered hole; the second gasket 4 is positioned in the conical hole of the mass flow controller joint 5, and the outer side surface of the second gasket 4 and the conical surface of the conical hole of the mass flow controller joint 5 form contact sealing; the connecting rod 1 comprises a connecting rod main body 11 and a connecting rod head 12 which are integrally formed, wherein the round end surface of the connecting rod head 12, which is far away from the connecting rod main body 11, is connected with the outlet end of the mass flow controller joint 5; the inner side surface of the first gasket 3 and the outer side surface of the connecting rod main body 11 form contact sealing, and one circular end surface of the first gasket 3 is connected with the circular end surface of the connecting rod head 12 close to the connecting rod main body 11; the connecting rod 1 is connected with the mass flow controller joint 5 through a nut 2.
The connecting rod body 11 and the connecting rod head 12 are both hollow round tubes made of stainless steel. The connecting rod main body 11 is coaxially connected with the connecting rod head 12; the connecting rod body 11 and the connecting rod head 12 have the same inner diameter, the connecting rod head 12 has an outer diameter larger than that of the connecting rod body 11, and the connecting rod head 12 has an outer diameter equal to that of the outlet surface of the tapered hole.
The first gasket 3 is a polytetrafluoroethylene gasket and consists of a sealing surface and a hollow ring, the inner diameter of the first gasket 3 is the same as the outer diameter of the connecting rod main body 11, and the outer diameter of the first gasket 3 is the same as the outer diameter of the connecting rod head 12.
The second gasket 5 is a polytetrafluoroethylene gasket and consists of a sealing surface and a hollow circular ring, and the outward circular end surface of the second gasket 4 and the outlet surface of the mass flow controller joint 5 are on the same plane.
A first external thread is engraved on the outer side surface of the mass flow controller joint 5; the second external screw thread is engraved on the outer side surface of the connecting rod head 12, the internal thread of the nut 2 is matched with the first external screw thread and the second external screw thread, the first gasket 3 is sealed in the threaded hole of the nut 2, and the first gasket 3 is placed in the nut base of the nut 2.
The nut 2 comprises a nut base and a nut body, the nut body is in threaded connection with the mass flow controller joint 5 and the connecting rod head 12, and the first gasket 3 and the nut base form contact sealing.
The assembling and working method of the connecting structure for the mass flow controller comprises the following steps: s1, a first gasket 3 is placed in a nut base of a nut 2, and the first gasket 3 and the nut base form contact sealing to enhance the sealing performance; s2, the connecting rod 1 penetrates through the nut 2, at the moment, the connecting rod head 12 of the connecting rod 1 is located in the nut body of the nut 2, the first gasket 3 and the connecting rod main body 11 of the connecting rod 1 form contact sealing, the outward circular end face of the second gasket 4 and the outlet face of the mass flow controller joint 5 are on the same plane, the phenomenon of air leakage caused by insufficient concentricity due to different stress can be avoided, and the sealing performance is enhanced; s3, placing the second gasket 4 in the conical hole of the mass flow controller joint 5, wherein the outer side surface of the second gasket 4 and the conical surface of the conical hole of the mass flow controller joint 5 form contact sealing; s4, fastening the connecting rod 1 penetrating through the nut 2 with the nut 2, the first gasket 3 and the mass flow controller joint 5 with the second gasket 4 placed in the conical hole by using a wrench; and S5, after fastening is finished, welding the other end of the connecting rod 1 penetrating through the nut 2 with the gas path pipeline.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. A connection structure for a mass flow controller for connecting the mass flow controller to a gas line, the connection structure comprising: the device comprises a connecting rod (1), a nut (2), a first gasket (3), a second gasket (4) and a mass flow controller joint (5);
the mass flow controller joint (5) is a joint with a conical hole;
the second gasket (4) is positioned in the conical hole of the mass flow controller joint (5), and the outer side surface of the second gasket (4) forms contact sealing with the conical surface of the conical hole of the mass flow controller joint (5);
the connecting rod (1) comprises a connecting rod main body (11) and a connecting rod head (12) which are integrally formed, and the round end face, far away from the connecting rod main body (11), of the connecting rod head (12) is connected with the outlet end of the mass flow controller joint (5);
the inner side surface of the first gasket (3) and the outer side surface of the connecting rod main body (11) form contact sealing, and one circular end surface of the first gasket (3) is connected with the circular end surface, close to the connecting rod main body (11), of the connecting rod head (12);
the connecting rod (1) is connected with the mass flow controller joint (5) through the nut (2).
2. A connecting structure for a mass flow controller according to claim 1, wherein the connecting rod main body (11) and the connecting rod head (12) are both hollow circular tubes;
the connecting rod main body (11) is coaxially connected with the connecting rod head (12);
the connecting rod main body (11) and the connecting rod head (12) have the same inner diameter, and the outer diameter of the connecting rod head (12) is larger than that of the connecting rod main body (11).
3. A connecting structure for a mass flow controller according to claim 1, wherein an inner diameter of said first spacer (3) is the same as an outer diameter of said connecting rod main body (11), and an outer diameter of said first spacer (3) is the same as an outer diameter of said connecting rod head (12).
4. A connection arrangement for a mass flow controller according to claim 1, characterised in that the outwardly rounded end face of the second gasket (4) is coplanar with the outlet face of the mass flow controller fitting (5).
5. A connection arrangement for a mass flow controller according to claim 1, characterised in that the outer side of the mass flow controller fitting (5) is imprinted with a first external thread;
a second external thread is engraved on the outer side surface of the connecting rod head (12);
the internal thread of the nut (2) is matched with the first external thread and the second external thread.
6. A connection arrangement for a mass flow controller according to claim 1, characterised in that the first gasket (3) seals within a threaded bore of the nut (2).
7. A connection structure for a mass flow controller according to claim 1, characterized in that the outer diameter of the connection rod head (12) is the same as the diameter of the outlet face of the tapered bore.
8. A connection arrangement for a mass flow controller according to claim 1, characterised in that the connecting rod (1) is a stainless steel connecting rod.
9. A connection arrangement for a mass flow controller according to claim 1, characterised in that the first gasket (3) is a teflon gasket.
10. A connection arrangement for a mass flow controller according to claim 1, characterised in that the second gasket (4) is a teflon gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222564748.7U CN218510354U (en) | 2022-09-27 | 2022-09-27 | Connecting structure for mass flow controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222564748.7U CN218510354U (en) | 2022-09-27 | 2022-09-27 | Connecting structure for mass flow controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218510354U true CN218510354U (en) | 2023-02-21 |
Family
ID=85213777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222564748.7U Active CN218510354U (en) | 2022-09-27 | 2022-09-27 | Connecting structure for mass flow controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218510354U (en) |
-
2022
- 2022-09-27 CN CN202222564748.7U patent/CN218510354U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106525709B (en) | Corrosion electrochemical testing device and use method thereof | |
| CN218510354U (en) | Connecting structure for mass flow controller | |
| CN210603768U (en) | Helium mass spectrometer leak detection device for butt weld of pipe and tube | |
| CN206772502U (en) | A kind of adapter plugging meter device for pressure-bearing class special equipment | |
| CN211856278U (en) | Concrete infiltration gas permeability measuring device | |
| CN106525711B (en) | Clamp for detecting corrosion performance of material by acoustic emission and use method thereof | |
| CN217860937U (en) | Clamping tool for sealing test of nozzle assembly | |
| CN213633373U (en) | PH probe flow cell | |
| CN213543874U (en) | Pressure measuring device for marine diesel engine fuel oil | |
| CN211042340U (en) | Nozzle flowmeter | |
| CN209014401U (en) | The heat exchanger tube structure for pressure test of heat exchange equipment | |
| CN111638080A (en) | Oiling detection system special for oiling machine and detection method thereof | |
| CN220960196U (en) | Safety gas meter | |
| CN110470431A (en) | The pump pressure frock and hydraulic test method of radial pipeline | |
| CN106706510B (en) | Sample clamp for electrochemical corrosion test and using method thereof | |
| CN220854027U (en) | Tightness test device for grouting holes of steel pipes | |
| CN217354561U (en) | Vehicle level sensor heating pipe connection structure | |
| CN220727522U (en) | Portable instrument tube temporary plugging device | |
| CN215294101U (en) | Flange pressure taking regulation orifice plate flow element for high temperature and high pressure | |
| CN218411601U (en) | Air filter connecting pipe leakage detection tool | |
| CN214668244U (en) | Pressure test tool for groove type pipe fitting | |
| CN211905252U (en) | Horizontal and vertical combustion test device | |
| CN220082473U (en) | Sealing structure for testing sealing performance of pipe fitting | |
| CN218826544U (en) | Vacuum quantitative liquid filling device for thermal bulb probe system | |
| CN213779469U (en) | Simple nozzle performance test tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |