CN111120717A - Self-operated regulating valve for boiler gas pipeline - Google Patents
Self-operated regulating valve for boiler gas pipeline Download PDFInfo
- Publication number
- CN111120717A CN111120717A CN202010053432.4A CN202010053432A CN111120717A CN 111120717 A CN111120717 A CN 111120717A CN 202010053432 A CN202010053432 A CN 202010053432A CN 111120717 A CN111120717 A CN 111120717A
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- China
- Prior art keywords
- self
- valve
- operated
- regulating valve
- electromagnetic induction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to a self-operated regulating valve for a boiler gas pipeline, which comprises: the electromagnetic induction type self-operated regulating valve comprises a main body, an electromagnetic induction module, a piezoelectric transmitter, a controller and a pulse current generator, wherein an electromagnetic induction coil, the piezoelectric transmitter, the pulse current generator and the controller are added to the existing self-operated regulating valve, when a boiler burner is closed or the pressure of an upstream/downstream pipeline of the self-operated regulating valve fluctuates, axial pulse electromagnetic force is applied to a valve core through the electromagnetic induction coil, and the response speed and the regulation stability of the regulating valve are improved.
Description
Technical Field
The invention relates to the field of mechanical equipment, in particular to a self-operated regulating valve for a boiler gas pipeline.
Background
At present, a self-operated regulating valve is widely applied to gas pipelines, including boiler gas pipelines, as an important device for pressure control. The structure of a conventional self-operated regulating valve is shown in fig. 1. The existing self-operated regulating valve changes the relative position of a valve core by means of resultant force generated by a regulating spring, a pressure sampling pipe before the valve, a pressure sampling pipe after the valve, a tray and the like, thereby controlling the flow of fuel gas. When current self-operated regulating valve is used for boiler gas pipeline, because there is mechanical inertia in parts such as regulating spring, tray, response speed is slower than the boiler combustor, close when the boiler combustor, when the boiler stops burning, the case should delay about 3s usually and can arrive closed position completely, at this in-process, the gas can continuously get into self-operated regulating valve low reaches pipeline, make low reaches pipeline pressure rise in the twinkling of an eye, bring certain potential safety hazard, in the boiler normal operating process, the fluctuation of self-operated regulating valve upper reaches gas pressure couples with the hysteresis nature of self-operated regulating valve regulation, can bring huge unstable factor for the regulation of gas pressure.
Disclosure of Invention
The invention provides a self-operated regulating valve applied to a boiler gas pipeline, aiming at the defects of the prior art, and provides a self-operated regulating valve applied to a boiler gas pipeline, wherein an electromagnetic induction coil, a piezoelectric transmitter, a pulse current generator and a controller are added to the prior self-operated regulating valve, when a boiler burner is closed or the pressure of an upstream pipeline/a downstream pipeline of the self-operated regulating valve fluctuates, axial pulse electromagnetic force is applied to a valve core through the electromagnetic induction coil, and the response speed and the regulation stability of the regulating valve are improved.
In order to solve at least one of the above technical problems, the technical solution adopted by the present invention is:
a self-operated regulating valve for a boiler gas pipeline is characterized by comprising: the piezoelectric transformer comprises a main body, an electromagnetic induction module, a piezoelectric transmitter, a controller and a pulse current generator, wherein the electromagnetic induction module is arranged around a valve core in the main body; the piezoelectric transmitter is used for detecting the inner cavity pressure difference of the main body; the input end of the controller is respectively connected with the signal ends of the piezoelectric transmitter and the boiler burner and is used for receiving a differential pressure value and an opening and closing signal of the boiler burner; the pulse current generator is respectively connected with the output end of the controller and the electromagnetic induction module and used for generating pulse current, so that the valve core is subjected to additional instantaneous axial electromagnetic force to push the valve core to open and close the valve in the main body in real time.
Further, the electromagnetic induction module includes: an electromagnetic induction coil.
Further, the direction of the pulse current is positive or negative.
Further, the duration of the pulse current is 2.2 +/-0.3 s.
Further, the body includes: the tray is arranged between the upper film cover and the lower film cover and divides the main body into an upper cavity and a lower cavity.
Furthermore, the upper cavity and the lower cavity are respectively connected with a pressure tapping pipe, and the pressure tapping pipe is connected with the piezoelectric transmitter.
Furthermore, the pressure tapping pipe connected with the upper cavity is a pressure tapping pipe behind the valve, and the pressure tapping pipe connected with the lower cavity is a pressure tapping pipe in front of the valve.
Furthermore, an adjusting spring is arranged in the upper cavity, one end of the adjusting spring is connected with the tray, and the other end of the adjusting spring is connected with the inner wall of the upper cavity.
Furthermore, the bottom of the lower cavity is provided with a valve communicated with the runners on the two sides.
Furthermore, the valve core is positioned in the lower cavity, one end of the valve core is fixedly connected with the tray, and the other end of the valve core is used for opening and closing the valve.
The beneficial effects of the invention at least comprise: the self-operated regulating valve applied to the boiler gas pipeline is particularly suitable for the boiler gas pipeline with medium and low-pressure gas supply and frequent pressure fluctuation or frequent start and stop, and provides more stable pressure control and quicker and more real-time response speed than the existing self-operated regulating valve.
Drawings
Fig. 1 is a schematic view of a prior art regulator valve.
Fig. 2 is a schematic structural view of the regulating valve of the present invention.
The pressure measuring device comprises an adjusting spring 1, an upper membrane cover 2, a tray 3, a lower membrane cover 4, a main body 5, an upper cavity 501, a lower cavity 502, a valve core 6, a valve 7, a valve rear pressure tapping pipe 8, a valve front pressure tapping pipe 9, a piezoelectric transmitter 10, a pulse current generator 11, a controller 12, an electromagnetic induction coil 13 and a flow channel 14.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to specific examples. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.
FIG. 1 is prior art and is described in detail in the background section.
Fig. 2 is a schematic structural diagram of the regulating valve of the present invention, and as shown in fig. 2, the self-operated regulating valve applied to a boiler gas pipeline provided by the present invention optimizes and improves the regulating valve except for a regulating spring, an upper membrane cover, a tray, a lower membrane cover, a valve body, a valve core, a valve rear pressure sampling pipe and a valve front pressure sampling pipe in a conventional structure, and adds a piezoelectric transmitter, a pulse current generator, a controller and an electromagnetic induction coil, specifically: the invention comprises an electromagnetic induction coil which is arranged in a lower cavity and surrounds the middle part of a valve core, a piezoelectric transmitter which is arranged on a pressure pipe behind a valve, a piezoelectric transmitter which is arranged on a pressure pipe in front of the valve, a pulse current generator and a controller.
As shown in figure 2, the controller is provided with three input ends for respectively receiving signals from two piezoelectric transmitters and a boiler burner, and the output end is used for controlling the pulse current generator to send forward or reverse pulse current to excite the electromagnetic induction coil to form instantaneous axial electromagnetic force, so that the problems of slow response speed, unstable control and the like caused by mechanical inertia of parts such as an adjusting spring, a tray and the like when the boiler burner is closed or the pressure of an upstream/downstream pipeline of the self-operated adjusting valve fluctuates are solved.
The electromagnetic induction coil surrounds the middle section of the valve core and is connected with the current output end of the pulse current generator. The pulse current duration of the pulse current generator is fixed to be 2.2s, and the error is +/-0.3 s. The output end of the controller is a positive electric signal and a negative electric signal, is connected to the input end of the pulse current generator and is used for exciting the pulse current generator to generate positive or negative pulse current, so that the valve core is pushed to rapidly move towards the valve or away from the valve by additional instantaneous axial electromagnetic force, and the valve is opened and closed in real time.
In summary, the self-operated regulating valve applied to the boiler gas pipeline provided by the invention is particularly suitable for the boiler gas pipeline with medium and low pressure gas supply and frequent pressure fluctuation or frequent start and stop, and provides more stable pressure control and quicker and more real-time response speed than the existing self-operated regulating valve.
Although embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, that various changes, modifications, substitutions and alterations may be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A self-operated regulating valve for a boiler gas pipeline is characterized by comprising: a main body, an electromagnetic induction module, a piezoelectric transmitter, a controller and a pulse current generator, wherein,
the electromagnetic induction module is arranged around the valve core in the main body;
the piezoelectric transmitter is used for detecting the inner cavity pressure difference of the main body;
the input end of the controller is respectively connected with the signal ends of the piezoelectric transmitter and the boiler burner and is used for receiving a differential pressure value and an opening and closing signal of the boiler burner;
the pulse current generator is respectively connected with the output end of the controller and the electromagnetic induction module and used for generating pulse current, so that the valve core is subjected to additional instantaneous axial electromagnetic force to push the valve core to open and close the valve in the main body in real time.
2. The self-operated regulator valve according to claim 1, wherein the electromagnetic induction module comprises: an electromagnetic induction coil.
3. The self-operated regulator valve according to claim 1, wherein the direction of the pulse current is positive or negative.
4. A self-operated regulator valve according to claim 3 wherein the pulse current duration is 2.2 ± 0.3 s.
5. The self-operated regulator valve according to claim 1, wherein the body comprises: the tray is arranged between the upper film cover and the lower film cover and divides the main body into an upper cavity and a lower cavity.
6. The self-operated regulating valve according to claim 5, wherein the upper cavity and the lower cavity are respectively connected with a pressure tapping pipe, and the pressure tapping pipes are connected with the piezoelectric transducer.
7. The self-operated regulator according to claim 6, wherein the pressure tapping pipe connected to the upper chamber is a post-valve pressure tapping pipe, and the pressure tapping pipe connected to the lower chamber is a pre-valve pressure tapping pipe.
8. The self-operated adjusting valve according to claim 6, wherein an adjusting spring is arranged in the upper cavity, and one end of the adjusting spring is connected with the tray, and the other end of the adjusting spring is connected with the inner wall of the upper cavity.
9. The self-operated regulator according to claim 6, wherein the bottom of the lower chamber is provided with the valve communicating with the flow passages at two sides.
10. The self-operated regulating valve according to claim 9, wherein the valve core is located in the lower cavity, one end of the valve core is fixedly connected with the tray, and the other end of the valve core is used for opening and closing the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010053432.4A CN111120717A (en) | 2020-01-17 | 2020-01-17 | Self-operated regulating valve for boiler gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010053432.4A CN111120717A (en) | 2020-01-17 | 2020-01-17 | Self-operated regulating valve for boiler gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111120717A true CN111120717A (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010053432.4A Pending CN111120717A (en) | 2020-01-17 | 2020-01-17 | Self-operated regulating valve for boiler gas pipeline |
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| CN (1) | CN111120717A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112675403A (en) * | 2021-01-06 | 2021-04-20 | 北京谊安医疗系统股份有限公司 | Expiration control valve |
-
2020
- 2020-01-17 CN CN202010053432.4A patent/CN111120717A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112675403A (en) * | 2021-01-06 | 2021-04-20 | 北京谊安医疗系统股份有限公司 | Expiration control valve |
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