CN203516885U - Flow-limiting decompression valve - Google Patents
Flow-limiting decompression valve Download PDFInfo
- Publication number
- CN203516885U CN203516885U CN201320601305.9U CN201320601305U CN203516885U CN 203516885 U CN203516885 U CN 203516885U CN 201320601305 U CN201320601305 U CN 201320601305U CN 203516885 U CN203516885 U CN 203516885U
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- flow
- valve
- pressure release
- release assembly
- limiting
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Abstract
The utility model discloses a flow-limiting decompression valve. The flow-limiting decompression valve comprises a shell assembly and a flow-limiting valve matched with the shell assembly. A fluid sample inlet tube is arranged, on the upstream of the flow-limiting valve, of the shell assembly, and a sampling tube is arranged, on the downstream of the flow-limiting valve, of the shell assembly. The flow-limiting decompression valve is characterized in that the upstream of the flow-limiting valve is provided with a decompression assembly mounting base integrated with the shell assembly and a decompression assembly connected to the decompression assembly mounting base, the decompression assembly is communicated with the upstream of the flow-limiting valve through a central through hole in the decompression assembly mounting base, and an overpressure alarm circuit is arranged to be matched with a moving part of the decompression assembly. According to the flow-limiting decompression valve, a pressure-limiting valve, the decompression assembly and the overpressure alarm device are integrally arranged, the structure is simple, mounting and maintaining are convenient, micro-flow regulation is achieved, and real-time sampling of different sorts of flow can be provided.
Description
Technical field
The utility model relates to a kind of controller for liquid flow, is specifically related to a kind of current limliting Decompression valves for liquid on-line sampling.
Background technique
At various liquid, carry occasion, conventionally need to carry out the online sample analysis of liquid, for example, the former water of power plant, petrochemical industry, Boiler High Pressure feed water, collect the fields such as defeated processed system and Waste Water Treatment, all need to carry out conveying and the water quality detection of water.Prevent from carrying the pressure of liquid may be higher simultaneously, need to carry out pressure limiting to the liquid of sampling, to protect detecting instrument.
In prior art, generally by reduction valve is set, the fluid pressure of online detection is regulated, reduce discharge pressure, but, when fluid pressure fluctuation is larger, outlet pressure can fluctuate up and down with the variation of inlet pressure, to detecting analytical instrument, has a negative impact.For reducing above-mentioned impact, need to Decompression valves be set in addition, avoid inlet pressure to transfinite, this has just caused the increase of piping installation, and seal point increases, and has increased maintenance cost.
Summary of the invention
The purpose of the present utility model is to provide a kind of current limliting Decompression valves that simultaneously possesses the integrated form of current limliting sampling, LED overvoltage alarm, decompression protection function.
To achieve the above object of the invention, the technical solution adopted in the utility model is: a kind of current limliting Decompression valves, comprise frame set, the flow-limiting valve coordinating with frame set, the upstream that is positioned at flow-limiting valve on described frame set is provided with flow injecting pipe, the downstream that is positioned at flow-limiting valve is provided with probe tube, the upstream that is positioned at flow-limiting valve is provided with the pressure release assembly fitting seat with frame set one, be connected to the pressure release assembly on pressure release assembly fitting seat, the center through hole of pressure release assembly on pressure release assembly fitting seat is communicated with the upstream of flow-limiting valve, coordinate and be provided with overpressure alarm circuit with the movable part of pressure release assembly.
In technique scheme, flow-limiting valve, pressure release assembly one are arranged on frame set, and overall structure is simple, does not need to carry out in addition pipeline connection; Meanwhile, utilize the movable part of pressure release assembly to control overpressure alarm circuit, when overpressure, the action of pressure release assembly, starts pressure release, and meanwhile, the work of superpressure telegraph circuit is reported to the police, and reminds operator to carry out corresponding operation.
In technique scheme, described pressure release assembly mainly consists of valve seat, sealing seat, push rod and spring, and sealing seat is arranged in the valve pocket of valve seat and provides the pretightening force with valve base sealing by spring, and the downstream that is positioned at sealing seat on valve pocket is provided with pressure relief opening; Described overpressure alarm circuit comprises the circuit board that is provided with LED lamp, is positioned at circuit board below and coordinates the switch that is provided with control LED lamp with the push rod of pressure release assembly.
Those skilled in the art can select to control accordingly the switch realization of LED lamp and coordinating of push rod, for example, and the simplest scheme, push-button switch is set below circuit board, and push rod upper end alignment button switch, when starting pressure release, on push rod, move, press the button switch, LED lamp luminous alarm, during pressure drop, when initial tension of spring is greater than the pressure acting on sealing seat, sealing seat is got back to sealing station, push rod moves down, discharge button switch, LED lamp goes out, all clear.
In technique scheme, described flow-limiting valve mainly by being arranged on flow-restricting flowpath in frame set, with the valve rod of vertebra bar, be fixed on valve rod positioning device on frame set, the handwheel that is positioned at valve rod end forms, vertebra bar one end on valve rod is stretched in flow-restricting flowpath, through valve rod positioning device, regulates vertebra bar to stretch into the length of flow-restricting flowpath.
Further technological scheme, is provided with internal thread in described valve rod positioning device, and described valve rod is provided with the outside thread with screw-internal thread fit.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1. the utility model is wholely set pressure-limit valve, pressure release assembly, simple in structure, convenient for installation and maintenance.
2. the utility model is provided with LED hyperpressure alarm device, highly sensitive, and real-time is good.
3. the utility model adopts coordinating of cone bar and flow-restricting flowpath, has realized micrometeor adjusting, and the real time sample of different flow can be provided.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's structure cross-sectional schematic.
Wherein: 1, frame set; 2, flow-limiting valve; 3, pressure release assembly; 4, flow injecting pipe; 5, probe tube; 6, pressure release assembly fitting seat; 7, valve seat; 8, sealing seat; 9, push rod; 10, spring; 11, pressure relief opening; 12, LED lamp; 13, switch; 14, flow-restricting flowpath; 15, vertebra bar; 16, valve rod; 17, valve rod positioning device; 18, handwheel.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment one: shown in Figure 1, a kind of current limliting Decompression valves, comprise frame set 1, the flow-limiting valve 2 coordinating with frame set, the upstream that is positioned at flow-limiting valve 2 on described frame set 1 is provided with flow injecting pipe 4, the downstream that is positioned at flow-limiting valve 2 is provided with probe tube 5, the upstream that is positioned at flow-limiting valve 2 is provided with the pressure release assembly fitting seat 6 with frame set 1 one, be connected to the pressure release assembly 3 on pressure release assembly fitting seat 6, the center through hole of pressure release assembly 3 on pressure release assembly fitting seat 6 is communicated with the upstream of flow-limiting valve 2, coordinate and be provided with overpressure alarm circuit with the movable part of pressure release assembly 3.
In the present embodiment, described pressure release assembly 3 consists of valve seat 7, sealing seat 8, push rod 9 and spring 10, and sealing seat 8 is arranged in the valve pocket of valve seat 7 and provides the pretightening force with valve seat 7 sealings by spring 10, and the downstream that is positioned at sealing seat 8 on valve pocket is provided with pressure relief opening 11; Described overpressure alarm circuit comprises the circuit board that is provided with LED lamp 12, is positioned at circuit board below and coordinates the switch 13 that is provided with control LED lamp 12 with the push rod 9 of pressure release assembly 3.
Described flow-limiting valve 2 by being arranged on flow-restricting flowpath 14 in frame set, with the valve rod 16 of vertebra bar 15, be fixed on valve rod positioning device 17 on frame set 1, the handwheel 18 that is positioned at valve rod 16 ends forms, vertebra bar 15 one end on valve rod 16 are stretched in flow-restricting flowpath 14, in described valve rod positioning device 17, be provided with internal thread, described valve rod 16 is provided with the outside thread with screw-internal thread fit, rotation by valve rod 16 regulates vertebra bar 15 to stretch into the length of flow-restricting flowpath 14, and then realizes the control to flow.
Take pressure release assembly 3 pressure release pressure setting as 0.5 MPa be example, when pipe-line system pressure surpasses 0.5 MPa, spring 10 pretightening forces of pressure release assembly 3 are less than the pressure acting on sealing seat 8, sealing seat 8 will be by jack-up, and push rod 9 moves up simultaneously, touches the button of pcb board assembly, LED lamp power circuit is connected, LED lamp 12 lights simultaneously, illustrative system overpressure, and fluid discharges by pressure relief opening 11.When system pressure is during lower than 0.5 MPa, spring 10 pretightening forces are greater than the pressure acting on sealing seat 8, and sealing seat 8 is got back to sealing station, and push rod 9 moves down simultaneously, and LED lamp power circuit is closed, and LED lamp 12 goes out simultaneously, superpressure all clear.
In the situation that LED lamp 12 goes out, illustrative system pressure is lower than 0.5 MPa, now adjustable sampling current limliting flow.By rotation hand wheel 18, with moving up and down of ovable valve stem 16, the cone bar at valve rod 16 tops moves along with moving up and down of valve rod 16 simultaneously, in moving process, because the sectional area of cone bar in runner hole changes, the sectional area in the runner hole that fluid passes through simultaneously also changes, thereby reaches the object of limit fluid flow velocity.For example, when valve rod 16 moves up, there is at the sectional area in runner hole the situation that becomes large in cone bar, and it is large that flow becomes, and vice versa.
Claims (4)
1. a current limliting Decompression valves, comprise frame set, the flow-limiting valve coordinating with frame set, the upstream that is positioned at flow-limiting valve on described frame set is provided with flow injecting pipe, the downstream that is positioned at flow-limiting valve is provided with probe tube, it is characterized in that: the upstream that is positioned at flow-limiting valve is provided with the pressure release assembly fitting seat of frame set one, is connected to the pressure release assembly on pressure release assembly fitting seat, the center through hole of pressure release assembly on pressure release assembly fitting seat is communicated with the upstream of flow-limiting valve, coordinates and is provided with overpressure alarm circuit with the movable part of pressure release assembly.
2. current limliting Decompression valves according to claim 1, it is characterized in that: described pressure release assembly mainly consists of valve seat, sealing seat, push rod and spring, sealing seat is arranged in the valve pocket of valve seat and provides the pretightening force with valve base sealing by spring, and the downstream that is positioned at sealing seat on valve pocket is provided with pressure relief opening; Described overpressure alarm circuit comprises the circuit board that is provided with LED lamp, is positioned at circuit board below and coordinates the switch that is provided with control LED lamp with the push rod of pressure release assembly.
3. current limliting Decompression valves according to claim 1, it is characterized in that: described flow-limiting valve mainly by being arranged on flow-restricting flowpath in frame set, with the spool of tapering, be fixed on valve rod positioning device on frame set, the handwheel that is positioned at valve rod end forms, cone bar on valve rod, one end is stretched in flow-restricting flowpath, stretches into the length of flow-restricting flowpath through valve rod positioning device cone governor bar.
4. current limliting Decompression valves according to claim 3, is characterized in that: in described valve rod positioning device, be provided with internal thread, described valve rod is provided with the outside thread with screw-internal thread fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320601305.9U CN203516885U (en) | 2013-09-27 | 2013-09-27 | Flow-limiting decompression valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320601305.9U CN203516885U (en) | 2013-09-27 | 2013-09-27 | Flow-limiting decompression valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516885U true CN203516885U (en) | 2014-04-02 |
Family
ID=50375817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320601305.9U Expired - Fee Related CN203516885U (en) | 2013-09-27 | 2013-09-27 | Flow-limiting decompression valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516885U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214401A (en) * | 2014-08-29 | 2014-12-17 | 苏州福润机械有限公司 | Valve with warning function electronic control switch |
| CN106151540A (en) * | 2016-07-05 | 2016-11-23 | 正茂阀门有限公司 | Adjustable quantitative sampling valve |
| CN108709002A (en) * | 2018-07-30 | 2018-10-26 | 乐清市阀门厂 | A kind of high-speed ventilation valve |
-
2013
- 2013-09-27 CN CN201320601305.9U patent/CN203516885U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214401A (en) * | 2014-08-29 | 2014-12-17 | 苏州福润机械有限公司 | Valve with warning function electronic control switch |
| CN106151540A (en) * | 2016-07-05 | 2016-11-23 | 正茂阀门有限公司 | Adjustable quantitative sampling valve |
| CN106151540B (en) * | 2016-07-05 | 2018-08-17 | 正茂阀门有限公司 | Adjustable quantitative sampling valve |
| CN108709002A (en) * | 2018-07-30 | 2018-10-26 | 乐清市阀门厂 | A kind of high-speed ventilation valve |
| CN108709002B (en) * | 2018-07-30 | 2023-09-05 | 乐清市阀门厂 | High-speed breather valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20200927 |