CN114198294A - Ball valve type explosion-proof stepless air flow adjusting and actuating mechanism - Google Patents
Ball valve type explosion-proof stepless air flow adjusting and actuating mechanism Download PDFInfo
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- CN114198294A CN114198294A CN202210020466.2A CN202210020466A CN114198294A CN 114198294 A CN114198294 A CN 114198294A CN 202210020466 A CN202210020466 A CN 202210020466A CN 114198294 A CN114198294 A CN 114198294A
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- explosion
- proof
- ball valve
- valve type
- actuating mechanism
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/08—Actuation of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1006—Adaptations or arrangements of distribution members the members being ball valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a ball valve type explosion-proof stepless air quantity adjusting and executing mechanism, and relates to the technical field of stepless air quantity adjustment of compressors. The key points of the technical scheme are that the explosion-proof valve comprises a valve chamber, an explosion-proof shell and a top cover which are connected in sequence; an explosion-proof outer chamber is formed among the top cover, the explosion-proof shell and the partition plate, and an explosion-proof inner chamber is formed among the partition plate, the explosion-proof shell and the valve chamber; a circuit board is arranged in the explosion-proof inner chamber, a wiring terminal row is arranged in the explosion-proof outer chamber, an explosion-proof threading sleeve is embedded on the partition board, and a flame-retardant cable penetrating through the explosion-proof threading sleeve is arranged between the wiring terminal row and the circuit board; the valve chamber is internally provided with a ball valve type two-position three-way high-speed electromagnetic valve, and a connecting wire of the ball valve type two-position three-way high-speed electromagnetic valve is connected with the circuit board. The invention has an explosion-proof design, thereby being capable of being used in an explosion-proof environment and improving the safety.
Description
Technical Field
The invention relates to the technical field of stepless air quantity regulation of compressors, in particular to a ball valve type explosion-proof stepless air quantity regulation actuating mechanism.
Background
The stepless air volume adjusting system of the large reciprocating compressor adopts a two-position three-way high-speed electromagnetic valve as a core component of a stepless adjusting actuating mechanism, a valve controller sends a control signal to realize the valve position switching of the two-position three-way electromagnetic valve, hydraulic energy is converted into mechanical energy, controllable delay closing of an air inlet valve is realized, and air volume which does not need to be compressed is returned, so that the load of the compressor is continuously and stably adjusted. According to the requirements of the explosive gas environment used by the compressor, the stepless air volume adjusting actuating mechanism assembly must obtain qualified explosion-proof certification, and has perfect outer explosion-proof design and inner explosion-proof design so as to improve the use safety of products and meet the explosion-proof specification and use requirements of petrochemical and chemical fields. Compared with a cone valve type two-position three-way high-speed electromagnetic valve, the ball valve type two-position three-way high-speed electromagnetic valve has the advantages of simple structure, convenience in processing, small valve element motion quality and higher control response speed.
However, the currently used ball valve type two-position three-way high-speed electromagnetic valve is not suitable for being used in an explosion-proof environment in the field of petrochemical industry because of lack of an explosion-proof design, and particularly is suitable for being used in a hydrogen environment, so that a ball valve type explosion-proof stepless air quantity adjusting and executing mechanism is necessary to be provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a ball valve type explosion-proof stepless air quantity adjusting and actuating mechanism which has an explosion-proof design, so that the ball valve type explosion-proof stepless air quantity adjusting and actuating mechanism can be used in an explosion-proof environment and the safety is improved.
In order to achieve the purpose, the invention provides the following technical scheme:
a ball valve type explosion-proof stepless air volume adjusting and actuating mechanism comprises a valve chamber, an explosion-proof shell and a top cover which are connected in sequence; an explosion-proof outer chamber is formed among the top cover, the explosion-proof shell and the partition plate, and an explosion-proof inner chamber is formed among the partition plate, the explosion-proof shell and the valve chamber;
a circuit board is arranged in the explosion-proof inner chamber, a wiring terminal row is arranged in the explosion-proof outer chamber, an explosion-proof threading sleeve is embedded on the partition board, and a flame-retardant cable penetrating through the explosion-proof threading sleeve is arranged between the wiring terminal row and the circuit board;
the valve chamber is internally provided with a ball valve type two-position three-way high-speed electromagnetic valve, and a connecting wire of the ball valve type two-position three-way high-speed electromagnetic valve is connected with the circuit board.
Further, the valve chamber terminal surface is provided with the location tang, the terminal surface of explosion-proof housing with the end face contact of location tang, just form first explosion-proof composition face between explosion-proof housing inside wall and the location tang lateral wall.
Furthermore, the positioning spigot side wall is embedded with a sealing ring matched with the inner side wall of the explosion-proof shell.
Further, the top cover is connected with the explosion-proof shell through a plurality of screws, and a flame-retardant sealing gasket is arranged between the top cover and the explosion-proof shell.
Furthermore, the end part of the connecting wire of the ball valve type two-position three-way high-speed electromagnetic valve and the two ends of the flame-retardant cable are respectively provided with an insulated cold-pressing joint.
Further, the valve chamber end face is provided with a damping isolation column connected with the circuit board.
Furthermore, the explosion-proof threading sleeve comprises a screw plug, a wire passing plug and a resin sealing part are arranged in the screw plug, and the flame-retardant cable sequentially passes through the wire passing plug and the resin sealing part; a first explosion-proof thread joint surface is formed between the screw plug and the partition plate, and a second explosion-proof joint surface is formed between the wire passing plug and the screw plug.
Furthermore, the ball valve type two-position three-way high-speed electromagnetic valve comprises a three-way valve body and a pole shoe arranged in the three-way valve body; and a third explosion-proof joint surface is formed between the pole shoe and the three-way valve body, and a second explosion-proof thread joint surface is formed between the three-way valve body and the valve chamber.
Further, an internal grounding assembly and an external grounding assembly are respectively arranged on the explosion-proof shell.
In conclusion, the invention has the following beneficial effects:
1. the circuit board capable of generating arc sparks is arranged in the explosion-proof shell, so that possible explosion is limited in the explosion-proof shell, explosive gas outside the shell cannot be ignited, and safety can be improved;
2. the arrangement of the explosion-proof joint face and the explosion-proof thread joint face is used for improving the sealing property and the connection stability, so that the safety of the mechanism is improved.
Drawings
Fig. 1 is a first schematic structural diagram of a ball valve type explosion-proof type inorganic gas quantity adjusting actuator in the embodiment;
FIG. 2 is a schematic structural diagram II of a ball valve type explosion-proof type inorganic gas amount adjusting actuator in the embodiment;
FIG. 3 is an enlarged view of portion A of FIG. 1;
fig. 4 is an enlarged schematic view of a portion B in fig. 1.
In the figure: 1. a valve chamber; 2. an explosion-proof housing; 21. a partition panel; 3. a top cover; 31. a flame retardant gasket; 4. a ball valve type two-position three-way high-speed electromagnetic valve; 41. a three-way valve body; 42. a pole shoe; 5. a circuit board; 51. a shock absorbing isolation column; 61. a plug screw; 62. a wire passing plug; 63. a resin sealing part; 64. a flame retardant cable wire; 7. a terminal block; 8. an internal ground assembly; 91. a first explosion-proof engagement surface; 92. a second explosion-proof engagement surface; 93. a third explosion-proof joint face; 94. a first explosion-proof threaded interface; 95. a second explosion-proof threaded interface.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example (b):
a ball valve type explosion-proof stepless air volume adjusting and actuating mechanism refers to fig. 1 to 4, and comprises a valve chamber 1, an explosion-proof shell 2 and a top cover 3 which are connected in sequence; in the embodiment, a partition plate 21 is arranged in the explosion-proof housing 2, an explosion-proof outer chamber is formed among the top cover 3, the explosion-proof housing 2 and the partition plate 21, and an explosion-proof inner chamber is formed among the partition plate 21, the explosion-proof housing 2 and the valve chamber 1; a circuit board 5 is arranged in the explosion-proof inner chamber, a wiring terminal row 7 is arranged in the explosion-proof outer chamber, an explosion-proof threading sleeve is embedded on the partition panel 21, and a flame-retardant cable 64 penetrating through the explosion-proof threading sleeve is arranged between the wiring terminal row 7 and the circuit board 5; a ball valve type two-position three-way high-speed electromagnetic valve 4 is arranged in the valve chamber 1, and a connecting line of the ball valve type two-position three-way high-speed electromagnetic valve 4 is connected with a circuit board 5; in the present embodiment, the circuit board 5 capable of generating arc sparks is disposed inside the explosion-proof housing 2, so that possible explosions are confined inside the explosion-proof housing 2, and explosive gas outside the housing is not detonated, thereby improving safety; the explosion-proof housing 2 in this embodiment is provided with an internal grounding assembly 8 and an external grounding assembly, respectively, so that the safety can be improved.
Referring to fig. 1, specifically, in the present embodiment, a positioning spigot is provided on an end surface of a valve chamber 1, an end surface of an explosion-proof housing 2 is in contact with the end surface of the positioning spigot, and a first explosion-proof joint surface 91 is formed between an inner side wall of the explosion-proof housing 2 and a side wall of the positioning spigot; preferably, a sealing ring matched with the inner side wall of the explosion-proof shell 2 is embedded in the side wall of the positioning spigot, so that the sealing effect can be improved; the first explosion-proof joint surface 91 is arranged for improving the sealing performance of the joint and limiting the propagation energy of internal flame, so that explosive gas outside the shell is prevented from being detonated; specifically, the first explosion-proof joint surface 91 in this embodiment is an interference joint surface.
Referring to fig. 1 to 4, in the present embodiment, specifically, the top cover 3 and the explosion-proof housing 2 are connected by a plurality of screws, and a flame-retardant sealing gasket 31 is disposed between the two; the flame-retardant sealing gasket 31 can improve the sealing performance on one hand and play a flame-retardant role on the other hand; in the embodiment, the end of the connecting wire of the ball valve type two-position three-way high-speed electromagnetic valve 4 and the two ends of the flame-retardant cable 64 are both provided with insulated cold pressing connectors, so that the safety can be improved; specifically, in the present embodiment, the end surface of the valve chamber 1 is provided with a shock absorbing and isolating column 51 connected to the circuit board 5, and the shock absorbing and isolating column 51 is provided with a nut for pressing the circuit board 5, so that the connection stability of the circuit board 5 can be improved.
Referring to fig. 1 and 3, specifically, the explosion-proof threading sleeve in the embodiment includes a screw plug 61, a wire plug 62 and a resin sealing portion 63 are arranged in the screw plug 61, and a flame-retardant cable 64 sequentially passes through the wire plug 62 and the resin sealing portion 63; a first explosion-proof threaded joint surface 94 is formed between the screw plug 61 and the partition plate 21, and a second explosion-proof joint surface 92 is formed between the wire passing plug 62 and the screw plug 61, so that the sealing property and the connection stability can be improved; preferably, the wire passing plug 62 in this embodiment is a flame retardant rubber plug, and the resin sealing portion 63 is formed by pouring for fixing the flame retardant cable wire 64; specifically, in this embodiment, the second explosion-proof engagement surface 92 is an interference engagement surface.
Referring to fig. 1 and 4, specifically, the ball valve type two-position three-way high-speed electromagnetic valve 4 in the present embodiment includes a three-way valve body 41, and a pole shoe 42 disposed in the three-way valve body 41; a third explosion-proof joint surface 93 is formed between the pole shoe 42 and the three-way valve body 41, and a second explosion-proof thread joint surface 95 is formed between the three-way valve body 41 and the valve chamber 1, so that the sealing property and the connection stability can be improved; specifically, the third explosion-proof joint surface 93 in this embodiment is an interference joint surface.
Claims (9)
1. The utility model provides an actuating mechanism is adjusted to stepless tolerance of explosion-proof type of ball valve formula which characterized in that: comprises a valve chamber, an explosion-proof housing and a top cover which are connected in sequence; an explosion-proof outer chamber is formed among the top cover, the explosion-proof shell and the partition plate, and an explosion-proof inner chamber is formed among the partition plate, the explosion-proof shell and the valve chamber;
a circuit board is arranged in the explosion-proof inner chamber, a wiring terminal row is arranged in the explosion-proof outer chamber, an explosion-proof threading sleeve is embedded on the partition board, and a flame-retardant cable penetrating through the explosion-proof threading sleeve is arranged between the wiring terminal row and the circuit board;
the valve chamber is internally provided with a ball valve type two-position three-way high-speed electromagnetic valve, and a connecting wire of the ball valve type two-position three-way high-speed electromagnetic valve is connected with the circuit board.
2. The ball valve type explosion-proof stepless air volume adjusting and actuating mechanism according to claim 1, characterized in that: the valve chamber terminal surface is provided with the location tang, explosion-proof housing's terminal surface with the end face contact of location tang, just form first explosion-proof composition face between explosion-proof housing inside wall and the location tang lateral wall.
3. The ball valve type explosion-proof stepless air volume adjusting and actuating mechanism according to claim 2, characterized in that: and a sealing ring matched with the inner side wall of the explosion-proof shell is embedded in the side wall of the positioning spigot.
4. The ball valve type explosion-proof stepless air volume adjusting and actuating mechanism according to claim 1, characterized in that: the top cover is connected with the explosion-proof shell through a plurality of screws, and a flame-retardant sealing gasket is arranged between the top cover and the explosion-proof shell.
5. The ball valve type explosion-proof stepless air volume adjusting and actuating mechanism according to claim 1, characterized in that: the end part of the connecting wire of the ball valve type two-position three-way high-speed electromagnetic valve and the two ends of the flame-retardant cable are respectively provided with an insulated cold-pressing joint.
6. The ball valve type explosion-proof stepless air volume adjusting and actuating mechanism according to claim 1, characterized in that: and the end face of the valve chamber is provided with a damping isolation column connected with the circuit board.
7. The ball valve type explosion-proof stepless air volume adjusting and actuating mechanism according to claim 1, characterized in that: the explosion-proof threading sleeve comprises a screw plug, a wire passing plug and a resin sealing part are arranged in the screw plug, and the flame-retardant cable sequentially passes through the wire passing plug and the resin sealing part; a first explosion-proof thread joint surface is formed between the screw plug and the partition plate, and a second explosion-proof joint surface is formed between the wire passing plug and the screw plug.
8. The ball valve type explosion-proof stepless air volume adjusting and actuating mechanism according to claim 1, characterized in that: the ball valve type two-position three-way high-speed electromagnetic valve comprises a three-way valve body and a pole shoe arranged in the three-way valve body; and a third explosion-proof joint surface is formed between the pole shoe and the three-way valve body, and a second explosion-proof thread joint surface is formed between the three-way valve body and the valve chamber.
9. The ball valve type explosion-proof stepless air volume adjusting and actuating mechanism according to claim 1, characterized in that: and the explosion-proof shell is respectively provided with an internal grounding assembly and an external grounding assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210020466.2A CN114198294A (en) | 2022-01-10 | 2022-01-10 | Ball valve type explosion-proof stepless air flow adjusting and actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210020466.2A CN114198294A (en) | 2022-01-10 | 2022-01-10 | Ball valve type explosion-proof stepless air flow adjusting and actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114198294A true CN114198294A (en) | 2022-03-18 |
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ID=80658245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210020466.2A Pending CN114198294A (en) | 2022-01-10 | 2022-01-10 | Ball valve type explosion-proof stepless air flow adjusting and actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114198294A (en) |
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2022
- 2022-01-10 CN CN202210020466.2A patent/CN114198294A/en active Pending
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