CN1690667A - Flow instrument housing - Google Patents
Flow instrument housing Download PDFInfo
- Publication number
- CN1690667A CN1690667A CN 200410013708 CN200410013708A CN1690667A CN 1690667 A CN1690667 A CN 1690667A CN 200410013708 CN200410013708 CN 200410013708 CN 200410013708 A CN200410013708 A CN 200410013708A CN 1690667 A CN1690667 A CN 1690667A
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- CN
- China
- Prior art keywords
- shell
- pipe fitting
- flow instrument
- instrument housing
- connection pipe
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Abstract
The invention discloses shell of flow meter, which comprises plastic out shell (1) and connecting pipe fitting (2) connected to both sides of out shell (1). The out shell (1) and connecting pipe fitting (2) interconnect to each other and become an one part by injection molding. Connecting pipe fitting (2) is used to connect flow meter to liquid or gas transmission pipe with its impeller set directly in out shell (1); the inside surface of out shell (1) can be injection molding to structure and shape to support and locate the impeller; when the temperature of liquid or gas changes, plastic out shell (1) changes little and has no influence to impeller rotation and the measurement precision. The cost of plastic out shell is less than that of copper.
Description
Technical field:
The present invention relates to a kind of housing of flowmeter.
Background technology:
The flowmeter that is used for metering liquid or gas flow, its housing generally are cylinder iron or copper production.Cast housing generally gets rusty easily, and the housing cost of copper product is higher.The nonmetal bearing support and the metal shell that are used to support and locate impeller in the flowmeter in addition are interference fit, if liquid that is measured or gas are high-temp liquid or gas, will cause the thermal deformation of bearing support and housing, because it is nonmetal inequality with thermal expansivity metal, temperature changes, and the two is out of shape the inconsistent serviceable life and the measuring accuracy that will influence flowmeter.Multiple plastic material appears in the market, as atactic copolymerized polypropene (being PPR), ABS and polyphenylene oxide (being PPO) etc., they all have corrosion-resistant, intensity and hardness moderate, be subjected to influence of temperature change little, injection moulding performance and the good advantage of other processing characteristics, they are used on the housing of flowmeter, can improve the scope of application of flowmeter greatly.
Summary of the invention:
Purpose of the present invention just provide a kind of cost lower, be subjected to the little flow instrument housing of influence of temperature change.The present invention realizes by following proposal: a kind of flow instrument housing, it comprises the shell 1 of plastic material and is arranged at the connection pipe fitting 2 at place, shell 1 both sides that shell 1 interconnects with connection pipe fitting 2 and injection moulding becomes one.Connection pipe fitting 2 is used for flowmeter is connected liquid or gas transmission pipeline, the impeller of flowmeter is directly installed in the shell 1, the inside surface of shell 1 can directly inject the support that is used to support and locate impeller, and when being used for multithread speed flow instrument, runner and shell 1 integral molded plastic can also be shaped, therefore, after liquid or the variation of gas occurrence temperature, shell 1 distortion of plastic material is very little, can not influence the spinning movement of impeller, deformation can not take place in the runner of multithread speed flow instrument yet, just can not influence measuring accuracy yet.The cost of plastic casing is lower than the housing cost of copper.The utlity model has simple in structure and have the advantage of big promotional value.
Description of drawings:
Fig. 1 is the structural representation of embodiment of the present invention one, and Fig. 2 is the structural representation of embodiment two, and Fig. 3 is the structural representation of embodiment nine.
Embodiment:
Embodiment one: specify present embodiment below in conjunction with Fig. 1.Present embodiment is made up of with the connection pipe fitting 2 that is arranged at place, shell 1 both sides the shell 1 of plastic material, and shell 1 interconnects with connection pipe fitting 2 and injection moulding becomes one.One end of connection pipe fitting 2 is immersed oneself in the solid tissue of shell 1, and the other end of connection pipe fitting 2 has external thread or internal thread.So be provided with, connection pipe fitting 2 is connected more firm with shell 1.
Embodiment two: specify present embodiment below in conjunction with Fig. 2.The difference of present embodiment and embodiment one is, it also comprises insert plate 3, and the insert plate 3 of metal material is included in the solid tissue of shell 1 and with connection pipe fitting 2 fixedlys connected.The casing rigidity that flowmeter so is set is higher, not contact liq or gas of insert plate 3 in addition, and temperature distortion is also less.
Embodiment three: the difference of present embodiment and embodiment one or embodiment two is that the material of shell 1 is an atactic copolymerized polypropene, english abbreviation (PPR).
Embodiment four: the difference of present embodiment and embodiment three is that the material of shell 1 is engineering plastics (being commonly called as ABS).
Embodiment five: the difference of present embodiment and embodiment three is that the material of shell 1 is polyphenylene oxide (being PPO).
Embodiment six: the difference of present embodiment and embodiment three is that the material of shell 1 is a polyamide, is commonly called as nylon (english abbreviation PA).
Embodiment seven: the difference of present embodiment and embodiment three is that the material of shell 1 is thermoplastic polyester (english abbreviation PETP or PBTP).
Embodiment eight: the difference of present embodiment and embodiment one is that the material of connection pipe fitting 2 is metal materials.Other composition is identical with embodiment one with annexation.
Embodiment nine: specify present embodiment below in conjunction with Fig. 3.The difference of present embodiment and embodiment eight is that the material of connection pipe fitting 2 is plastic materials.Other composition is identical with embodiment eight with annexation.
Claims (10)
1, a kind of flow instrument housing is characterized in that it comprises the shell (1) of plastic material and is arranged at the connection pipe fitting (2) that shell (1) both sides are located, and shell (1) interconnects with connection pipe fitting (2) and injection moulding becomes one.
2, flow instrument housing according to claim 1 is characterized in that an end of connection pipe fitting (2) is immersed oneself in the solid tissue of shell (1), and the other end of connection pipe fitting (2) has external thread or internal thread.
3, flow instrument housing according to claim 1 is characterized in that it also comprises insert plate (3), and the insert plate of metal material (3) is included in the solid tissue of shell (1) and with connection pipe fitting (2) fixedlys connected.
4, flow instrument housing according to claim 1 is characterized in that the material of shell (1) is an atactic copolymerized polypropene.
5, flow instrument housing according to claim 1 is characterized in that the material of shell (1) is ABS.
6, flow instrument housing according to claim 1 is characterized in that the material of shell (1) is a polyphenylene oxide.
7, flow instrument housing according to claim 1 is characterized in that the material of shell (1) is a nylon.
8, flow instrument housing according to claim 1 is characterized in that the material of shell (1) is a thermoplastic polyester.
9, flow instrument housing according to claim 1 is characterized in that the material of connection pipe fitting (2) is a metal material.
10, flow instrument housing according to claim 1 is characterized in that the material of connection pipe fitting (2) is a plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410013708 CN1690667A (en) | 2004-04-23 | 2004-04-23 | Flow instrument housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410013708 CN1690667A (en) | 2004-04-23 | 2004-04-23 | Flow instrument housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1690667A true CN1690667A (en) | 2005-11-02 |
Family
ID=35346268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410013708 Pending CN1690667A (en) | 2004-04-23 | 2004-04-23 | Flow instrument housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1690667A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458250B (en) * | 2008-12-26 | 2012-12-26 | 尚沃医疗电子无锡有限公司 | Self-powered gas flow control pipe fitting |
| CN105698876A (en) * | 2016-03-08 | 2016-06-22 | 钛能科技股份有限公司 | Light high-strength turbine flowmeter |
-
2004
- 2004-04-23 CN CN 200410013708 patent/CN1690667A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458250B (en) * | 2008-12-26 | 2012-12-26 | 尚沃医疗电子无锡有限公司 | Self-powered gas flow control pipe fitting |
| CN105698876A (en) * | 2016-03-08 | 2016-06-22 | 钛能科技股份有限公司 | Light high-strength turbine flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |