CN207112050U - A kind of low discharge self-operated flow control valve - Google Patents
A kind of low discharge self-operated flow control valve Download PDFInfo
- Publication number
- CN207112050U CN207112050U CN201720282875.4U CN201720282875U CN207112050U CN 207112050 U CN207112050 U CN 207112050U CN 201720282875 U CN201720282875 U CN 201720282875U CN 207112050 U CN207112050 U CN 207112050U
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- Prior art keywords
- middle section
- valve
- hand tap
- valve plug
- diaphragm
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- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 239000012530 fluid Substances 0.000 abstract description 3
- 210000003660 reticulum Anatomy 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012384 transportation and delivery Methods 0.000 description 3
- 230000002153 concerted effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Abstract
It the utility model is related to the valve that fluid medium is controlled, and in particular to a kind of low discharge self-operated flow control valve of water system.A kind of low discharge self-operated flow control valve, by valve body, bonnet, hand tap and automechanism and seal composition, automechanism is by middle section, automatic valve plug, spring and diaphragm composition, hand tap, middle section, automatic valve plug, diaphragm, spring and bonnet order are arranged on valve body, the radial fit diameter of middle section and automatic valve plug is the half of inside nominal diameter, because diameter is small, the area of rectangle throttle window on middle section and automatic valve plug side wall reduces about 3/4, the shape of outlet flow is rectangle, its area is about the 1/2 of inside nominal diameter area, hand tap, middle section, automatic valve plug, diaphragm and spring load above valve body, reduce the constructive accounting in the industry that hand tap is installed below in valve body, reduce a possible breakthrough.
Description
Technical field
It the utility model is related to the valve that fluid medium is controlled, and in particular to a kind of low discharge of water system is relied on oneself
Formula flow control valve.
Background technology
In life, it is related in the conveying of gas and liquid, control flow is a kind of essential means, conventional
Control flow mode is installation self-operated flow control valve.In fluid control valve field, the technology of self-operated flow control valve
It is progressively ripe, also flow-control scope, to reduce cost be urgent problem to be solved.
The uncontrollable phenomenon of low discharge, particularly smaller diameter valve, by taking DN25 as an example, state often occur in actual applications
Family standard GB/T29735-2013《Heating air conditioning self-operated flow control valve》Regulation：DN25 minimum controlling flux scope is
0.2~2m3/ h, the product of most enterprises are extremely difficult to lower limit 0.2m3/ h, in product design, in order to meet minimum control
The upper limit requirement of range of flow processed, considers the situation of minimum operationg pressure differential, all can be by the larger of self-choke area design, even
Equal to inside nominal diameter, at this moment to ensure that the upper limit of minimum controlling flux scope is required it is necessary to which the size of automatic throttling gear is matched somebody with somebody
Conjunction is made very accurate, is learnt by our experiment, when the diameter of automatic throttling gear is equal to inside nominal diameter, self-choke dress
The fit clearance for putting internal-and external diameter will be≤0.08 millimeter, and with regard to the equipment of modern mechanical processing, part processing is can to meet above-mentioned want
Ask, but due to quality problem, the jam that automatic throttling gear can often occur in actual water system is applied to, in order to avoid certainly
The generation of dynamic throttling arrangement jam phenomenon, producer by the fit clearance of automatic throttling gear internal-and external diameter will≤0.15 millimeter with
Under, accordingly, it is a unsolvable contradiction that should meet that requirements of the national standard adapts to actual water quality again.
The thermic load of heating system has certain code requirement, and civil buildings thermic load is 45~70w/m2, by rich and influential family
Type 150m2It is 70 × 150=10500w=10.5kw that/family, which calculates its maximum heating load, is 20 DEG C of calculating by supply backwater temperature difference,
Hot water flow is about 0.45m3/ h, small apartment 75m2The hot water flow at/family is about 0.226m3/ h, i.e., hot water flow scope at this moment
It is 0.226~0.45m3/ h, after this scope is amplified again, water-carrying capacity scope is 0.1~0.8m3/ h can meet heat supply, center
The water-carrying capacity requirement of air-conditioning system.
The content of the invention
The utility model will realize a kind of self-operated flow control valve that can control low discharge.
Technical scheme is used by the utility model solves its technical problem：A kind of low discharge self-operated flow control valve
(hereinafter referred to as：Valve), it is made up of valve body, bonnet, hand tap and automechanism and seal, automechanism is saved, certainly by middle
Dynamic valve plug, spring and diaphragm composition, hand tap, middle section, automatic valve plug, diaphragm, spring and bonnet order are arranged on valve body,
Wherein：3~4 symmetrical rectangle throttle windows are provided with the middle section of cylindrical drum body structure and automatic valve plug side wall, automatically
Valve plug can be axially moved in middle section inner chamber, and the rectangle throttle window of middle section and automatic valve plug is opened when overlapping for the maximum of automechanism
Degree, automechanism push it against maximum opening under the action of the spring, when water system is run, the water of valve inlet by middle section and
The rectangle throttle window of automatic valve plug acts on diaphragm inner chamber, and automechanism is pushed to tend to close by diaphragm inner chamber in the presence of hydraulic pressure
Close, automechanism is pushed to tend to open, automechanism by the water of valve export by the pressure guide hole entrance diaphragm exocoel on valve body
Spring pressure and diaphragm exocoel water pressure make a concerted effort pressure relative equilibrium with diaphragm inner chamber water when, automechanism balance
In the ideal position of design, at this moment, the rectangle throttle window of middle section and automatic valve plug is the state of partially overlapping, and the water of valve inlet passes through
The area to partially overlap for crossing the rectangle throttle window of middle section and automatic valve plug flows to valve export, by the partial node again of hand tap
Valve is flowed out after stream, the water due to flowing through hand tap both sides is balanced by automechanism, therefore the pressure of hand tap both sides
Difference is constant.
Above-mentioned hand tap is mounted in valve export, due to the constant pressure of hand tap both sides of automechanism
Difference, according to G=k* √ Δ P, G- instantaneous deliveries (m in formula3/ h), k- discharge coefficients (m3/ h), Δ P- pressure differences (100kpa), manually
The timing of unlatching size (namely hand tap blocks the size of valve export area) one of cock, the flow passed through is definite value,
The requirement for controlling low discharge flow can be met.
Above-mentioned middle section and the radial fit diameter of automatic valve plug are the half of inside nominal diameter, because diameter is small, middle section
Reduce 3/4 with the area of the rectangle throttle window in automatic valve plug side wall.
The shape of above-mentioned valve export runner is rectangle, and its area is the 1/2 of inside nominal diameter area.
Above-mentioned hand tap, middle section, automatic valve plug, diaphragm and spring load above valve body, reduce in valve
The constructive accounting in the industry of hand tap is installed below in body, reduces a possible breakthrough.
The utility model possessed advantage and positive role compared with prior art；
1st, the technology calculating for being not necessary to complexity can complete design；
2nd, on the premise of heat supply, the requirement of central air-conditioning water-carrying capacity is met, automechanism and hand are greatly reduced
The orifice size of dynamic cock, makes it possible Valve controlling low discharge；
3rd, cost is greatly reduced.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and examples.
Fig. 1 is vertical section of the automatic valve plug of the utility model low discharge self-operated flow control valve at centre position
Figure；
Fig. 2 is the shape graph of the delivery port of the utility model low discharge self-operated flow control valve；
Fig. 3 is the profilograph saved in the part 3 of the utility model low discharge self-operated flow control valve；
Section, 4 automatic valve plugs, 5 diaphragms, 6 springs, 7 bonnets, 8 YEs, B in 1 valve body, 2 hand taps, 3 in figure
The rectangle throttle window saved in pressure guide hole, a.
Embodiment
As illustrated, a kind of low discharge self-operated flow control valve, by valve body 1, hand tap 2, middle section 3, automatic valve plug
4th, diaphragm 5, spring 6, bonnet 7 are formed, and hand tap 2, middle section 3, automatic valve plug 4, diaphragm 5, spring 6, the order of bonnet 7 are arranged on
On valve body 1, wherein：3~4 symmetrical rectangles are provided with the middle section 3 and the side wall of automatic valve plug 4 of cylindrical drum body structure
Throttle window a, automatic valve plug 4 can be axially moved in 3 inner chambers of middle section, when the rectangle throttle window a of middle section 3 and automatic valve plug 4 is overlapped
For the maximum opening of automechanism, automechanism pushes it against maximum opening in the presence of spring 6, when water system is run, valve
The water of door import acts on diaphragm inner chamber, work of the diaphragm inner chamber in hydraulic pressure by the rectangle throttle window a of middle section 3 and automatic valve plug 4
Automechanism is pushed to approach to turn off with lower, the water of valve export, will by the exocoel of pressure guide hole B entrance diaphragms 5 on valve body 1
Automechanism is pushed to tend to open, automechanism spring 6 pressure and the exocoel water of diaphragm 5 pressure make a concerted effort with diaphragm 5 in
During the pressure relative equilibrium of chamber water, automechanism balances the ideal position in design, at this moment, the rectangle of middle section 3 and automatic valve plug 4
Throttle window a is the state of partially overlapping, and the rectangle throttle window a of section 3 and automatic valve plug 4 partially overlaps during the water of valve inlet passes through
Area flows to valve export, flows out valve after the throttling again of hand tap 2, due to flowing through the water of the both sides of hand tap 2
It is to be balanced by automechanism, therefore the pressure difference of the both sides of hand tap 2 is constant.
Above-mentioned hand tap 2 is mounted in valve export, due to the constant pressure of the both sides of hand tap 2 of automechanism
Difference, according to G=k* √ Δ P, G- instantaneous deliveries (m in formula3/ h), 1- discharge coefficients (m3/ h), Δ P- pressure differences (100kpa), manually
The timing of unlatching size (namely hand tap 2 blocks the size of valve export area) one of cock 2, the flow passed through is fixed
Value, the requirement for controlling flow can be met.
Above-mentioned middle section 3 and the radial fit diameter of automatic valve plug 4 are the half of inside nominal diameter, because diameter is small, in
Section 3 and the area of the rectangle throttle window in the side wall of automatic valve plug 4 reduce 3/4.
The shape of above-mentioned valve export runner is rectangle (A to), and its area is the 1/2 of inside nominal diameter area.
Above-mentioned hand tap 2, middle section 3, automatic valve plug 4, diaphragm 5 and spring 6 load above valve body 1, reduce
The constructive accounting in the industry of hand tap 2 is installed below in valve body 1, reduces a possible breakthrough.
Claims (2)
1. a kind of low discharge self-operated flow control valve, it is characterized in that：By valve body, bonnet, hand tap and automechanism and close
Sealing forms, and automechanism is made up of middle section, automatic valve plug, spring and diaphragm, hand tap, middle section, automatic valve plug, diaphragm,
Spring and bonnet order are arranged on valve body, and the radial fit diameter of middle section and automatic valve plug is the half of inside nominal diameter, due to
Diameter is small, and the area of the rectangle throttle window on middle section and automatic valve plug side wall reduces 3/4, and the shape of valve export runner is
Rectangle, its area are the 1/2 of inside nominal diameter area.
2. self-operated flow control valve according to claim 1 it is characterized in that：Hand tap, middle section, automatic valve plug, diaphragm
Load with spring above valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720282875.4U CN207112050U (en) | 2017-03-14 | 2017-03-14 | A kind of low discharge self-operated flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720282875.4U CN207112050U (en) | 2017-03-14 | 2017-03-14 | A kind of low discharge self-operated flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207112050U true CN207112050U (en) | 2018-03-16 |
Family
ID=61595244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720282875.4U Expired - Fee Related CN207112050U (en) | 2017-03-14 | 2017-03-14 | A kind of low discharge self-operated flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207112050U (en) |
-
2017
- 2017-03-14 CN CN201720282875.4U patent/CN207112050U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 062252 Hebei Xianxian County Shanglin Township Hebei Jinqiao balance valve Co., Ltd. Patentee after: Hailin valve technology Hebei Co.,Ltd. Address before: 062252 Hebei Xianxian County Shanglin Township Hebei Jinqiao balance valve Co., Ltd. Patentee before: HEBEI GOLDEN BRIDGE BALANCE VALVE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |