CN201521689U - Knitting needle type pressure reducing valve - Google Patents
Knitting needle type pressure reducing valve Download PDFInfo
- Publication number
- CN201521689U CN201521689U CN2009202555184U CN200920255518U CN201521689U CN 201521689 U CN201521689 U CN 201521689U CN 2009202555184 U CN2009202555184 U CN 2009202555184U CN 200920255518 U CN200920255518 U CN 200920255518U CN 201521689 U CN201521689 U CN 201521689U
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- CN
- China
- Prior art keywords
- valve body
- sample water
- knitting needle
- water pipe
- rod
- 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.)
- Expired - Lifetime
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Abstract
A knitting needle type pressure reducing valve comprises an ingressing and egressing sample water pipe, knitting needles, a rod-shaped valve seat, adjusting nuts, a screw bolt, a valve body, an adjusting hand wheel, and a sealing device, wherein an inlet of the ingressing and egressing sample water pipe is mounted at the front end of the rod-shaped valve body, the back ends of the knitting needles arranged in the rod-shaped valve seat and the rod-shaped valve body and provided with a taper at the front end are fixedly connected with the adjusting nuts, the rod-shaped valve seat is fixedly connected with one end of the rod-shaped valve body, the front ends of knitting needles are arrange in the inlet of the ingressing and egressing sample water pipe, adjusting nuts are spirally fixed on the screw bolt, the taper of the knitting needles in the inlet of the sample water pipe and the gap in an inner chamber of the valve body form a sample water flow passage, the sealing device is arranged at the other end of the valve body, and the other end of the screw bolt is connected with the adjusting hand wheel. The pressure reducing valve has the advantages of simple structure, easy manufacture, low manufacturing cost, high safety, strong practicability, and excellent accuracy control effects of flow and pressure.
Description
Technical field
The utility model relates to the reduction valve that Thermal Power Station or the online sample analysis of heating system High Temperature High Pressure sample water are used
Background technique
Modern power station or heating system require accurately flow and pressure control when carrying out the chemical analysis of water and steam sample, therefore the High Temperature High Pressure sample water of Thermal Power Station or heating system needs online sample analysis, the reduction of high pressure is the major issue that system designer runs into when the sampling design, and general reduction valve only has pressure-reducing function but do not reach accurate control to flow and pressure, and large knitting needle formula reduction valve aims at this unique high-pressure sampling problem of solution and designs
Summary of the invention
The utility model purpose is: the large knitting needle formula reduction valve that the online sample analysis of High Temperature High Pressure sample water needs of a kind of Thermal Power Station or heating system is provided, especially a kind of simple in structure, easy for installation, accurate reduction valve of control flow rate and pressure, it is control flow rate and pressure effectively, guarantee that the in-line meter measurement result is accurate, and self long service life.
The technical solution of the utility model is: a kind of large knitting needle formula reduction valve, by turnover sample water pipe, large knitting needle, shaft-like valve seat, adjust nut, screw rod, valve body, adjust handwheel, seal arrangement constitutes, the inlet of turnover sample water pipe is installed in the front end of shaft-like valve body, being arranged on large knitting needle its rear end that shaft-like valve seat and shaft-like valve body Inner Front End have tapering is fixed in and adjusts on the nut, one end of shaft-like valve seat and shaft-like valve body is affixed, the front end of large knitting needle is arranged in the inlet of turnover sample water pipe, adjust nut again screw fixed on a screw rod, the tapering of sample pipe inlet large knitting needle and the space in the body cavity constitute the sample water flow passage, the other end of valve body is provided with seal arrangement, and the screw rod the other end is connected with adjusting handle.Therefore have online adjusting sample water pressure, flow is light, and online characteristics that realize clearing up automatically impurity.
The beneficial effects of the utility model: 1), simple in structure, be easy to make, cheap; 2), safe, practical; 3), the accurate control effect of flow and pressure is good.4), can realize on-line automatic cleaning impurity.
Description of drawings
Fig. 1 is an element structure schematic representation of the present utility model.
Among the figure: sample water pipe 1, large knitting needle 2, valve seat 3, space 4, adjustment nut 5, screw rod 6, valve body 7,8, big nut; 9, sealing head; 10, gland nut 11, adjustment handwheel; 12, sealing head; 13, gasket seal; 14, needle seat.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Referring to Fig. 1, valve seat is connected with two sample water pipes in the utility model, terminal is welded with spherojoint and receives external pipe, large knitting needle with tapering adopts the mode that connects with the adjustment nut, large knitting needle formula reduction valve, comprise sample water pipe 1, large knitting needle 2, valve seat 3, space 4, adjust nut 5, screw rod 6, valve body 7, adjusting handwheel 12 constitutes, the inlet of turnover sample water pipe is installed in the front end of shaft-like valve body, being arranged on large knitting needle its rear end that shaft-like valve seat and shaft-like valve body Inner Front End have tapering is fixed in and adjusts on the nut, one end of shaft-like valve seat and shaft-like valve body is affixed, the front end of large knitting needle is arranged in the inlet of turnover sample water pipe, adjustment nut screw thread again is fixed on the screw rod, the tapering of sample pipe inlet large knitting needle and the space in the body cavity constitute the sample water flow passage, the screw rod the other end is fixed with adjusting handwheel, and the other end of valve body is equipped with the seal arrangement of parcel screw rod.Big nut 8 is fixed on an end of shaft-like valve body; And seal arrangement is installed herein, seal arrangement is made of sealing head 9,12, gland nut, gasket seal.Gland nut can be provided with internal thread and be threaded with screw rod 6.
Adjust on the nut and have guide-track groove, cooperate with the guide rail that welds on the valve body, fixedly large knitting needle is not done axial rotation, adjust nut and valve rod and adopt screw-thread fit, then can regulate screw rod (or claiming valve rod) of handwheel is adjusted in rotation, reaches the purpose of adjusting pressure and flow thereby adjust the large knitting needle insertion depth by valve rod.Valve body and valve seat adopt the mode that connects, and the employing of seal arrangement guarantees under high pressure to have good sealing property.Whole valve adopts the threading means of fixation usually.
The utility model large knitting needle formula reduction valve working procedure is as follows: the reduction valve outlet pressure is controlled with rotatable handle, when high pressure sample water flows into reduction valve, thereby moving axially on valve rod drives large knitting needle thereby nut is adjusted in rotatable handle control, the degree of depth of large knitting needle in the affixed sample pipe inlet of valve seat can be adjusted sample water flow and pressure, thus the force value that obtains wanting in the reduction valve outlet port.Two affixed sample water pipe apertures of described valve body are 6mm, and the aperture of receiving external pipe is 8-9mm, the structure of affixed probe tube terminal, external form and connect mode with external pipe.
Described valve seat material should be identical with the external pipe material that is connect, valve body, valve seat and to take over the road material be that 316SS or employing are better than or the material of similar 316SS performance.The assurance level was installed when valve body was installed.
Claims (2)
1. large knitting needle formula reduction valve, it is characterized in that by turnover sample water pipe, large knitting needle, shaft-like valve seat, adjust nut, screw rod, valve body, adjust handwheel, seal arrangement constitutes, the inlet of turnover sample water pipe is installed in the front end of shaft-like valve body, being arranged on large knitting needle its rear end that shaft-like valve seat and shaft-like valve body Inner Front End have tapering is fixed in and adjusts on the nut, one end of shaft-like valve seat and shaft-like valve body is affixed, the front end of large knitting needle is arranged in the inlet of turnover sample water pipe, adjust nut again screw fixed on a screw rod, the tapering of sample pipe inlet large knitting needle and the space in the body cavity constitute the sample water flow passage, the other end of valve body is provided with seal arrangement, and the screw rod the other end is connected with adjusting handle.
2. a kind of large knitting needle formula reduction valve according to claim 1, it is characterized in that: the aperture of the sample water pipe that described shaft-like valve body is affixed is 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202555184U CN201521689U (en) | 2009-11-20 | 2009-11-20 | Knitting needle type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202555184U CN201521689U (en) | 2009-11-20 | 2009-11-20 | Knitting needle type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521689U true CN201521689U (en) | 2010-07-07 |
Family
ID=42507864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202555184U Expired - Lifetime CN201521689U (en) | 2009-11-20 | 2009-11-20 | Knitting needle type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017068595A1 (en) * | 2015-10-23 | 2017-04-27 | Forbes Marshall Private Limited | Sample pressure reducing valve |
-
2009
- 2009-11-20 CN CN2009202555184U patent/CN201521689U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017068595A1 (en) * | 2015-10-23 | 2017-04-27 | Forbes Marshall Private Limited | Sample pressure reducing valve |
| KR20180071265A (en) * | 2015-10-23 | 2018-06-27 | 포브스 마셜 프라이빗 리미티드 | Sample Reducing Valve |
| KR102362417B1 (en) * | 2015-10-23 | 2022-02-11 | 포브스 마셜 프라이빗 리미티드 | sample pressure reducing valve |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |