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Single-pass injection volume regulating valve

A technology for regulating valves and injection volume, which is applied in the direction of lifting valves, valve devices, engine components, etc., and can solve the problems of small gas flow and odorization

Active Publication Date: 2017-08-04
莫中振
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]In order to solve the problem of gas odorization with small flow rate, the present invention provides a single injection volume regulating valve, which is combined with the existing electromagnetic pump / motor pump to precisely control A single addition amount meets the needs of the gas station for odorizing the small flow of gas

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A single injection volume regulating valve, comprising a tubular casing 3, a counter wire 4, a transparent tube 2, a push rod 1 and a ball 6;

[0024] A step is formed at the first end of the tubular housing 3, and its inner wall is provided with a screw thread to match the pair of wires 4. O-shaped sealing rings, ring gaskets 5 and the pair of wires 4 are installed in sequence at the steps; the pair of wires 4 and the motor pump / electromagnetic The output port of the pump is connected;

[0025] The second end of the tubular housing 3 is formed with an end cap, the inner diameter of which is smaller than the inner diameter of the transparent tube 2; the transparent tube 2 is installed inside the tubular housing 3; the inner surface of the end cap is provided with an internal thread;

[0026] The top of the push rod 1 is slotted 102, inserted into the transparent tube 2, and the first annular gasket 7 is installed in the transparent tube 2; the hollow position of the fir...

Embodiment 2

[0031] The difference from the single injection volume regulating valve in Embodiment 1 is that it also includes a secondary sealing device 8, the secondary sealing device 8 includes a tee 801, a casing 802 and a latex film 803; the tubular housing 3 is divided into two sections, respectively The seal is installed at the horizontal position of the tee 801, the other port of the tee 801 is installed with a casing, and the latex film 803 is installed in the casing 802 to form a seal.

[0032] When in use, the counter wire 4 is connected to the output port of the motor pump / electromagnetic pump, and the gas enters the working chamber from the counter wire 4, then enters the transparent tube through the first annular gasket and the groove, and enters the secondary sealing device 8, realizing a single Input volume control.

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Abstract

The invention discloses a single-pass injection volume regulating valve. The single-pass injection volume regulating valve comprises a tubular shell, a nipple, a transparent tube, a push rod and a ball. A first end of the tubular shell forms a step which is sequentially provided with an O-shaped sealing ring, an annular spacer and the nipple. A second end of the tubular shell forms an end cap, and the end cap is smaller than the transparent tube in inner diameter. The transparent tube is installed in the tubular shell. An internal thread is arranged on the inner surface of the end cap. A groove is formed in the top end of the push rod, and the transparent tube is inserted into the groove and internally provided with a first annular spacer. The position between the first annular spacer and the transparent tube is sealed. The outer surface of the end, away from the groove, of the push rod is provided with an external thread matched with the internal thread on the end cap. A space formed by the first annular spacer, the transparent tube and the annular spacer is a working cavity, and the ball is freely stored in the working cavity. The diameter of the ball is larger than the inner diameter of the annular spacer. The single-pass injection volume regulating valve is combined with an existing electromagnetic pump / motor pump, the single-pass injection volume is accurately controlled, and the requirement of a gas station for gas odorization in a small-flow mode is met.

Description

technical field [0001] The invention relates to the field of adding chemicals, in particular to the field of natural gas odorizing equipment, in particular to a single injection volume regulating valve. Background technique [0002] Natural gas odorizing equipment belongs to chemical adding machinery. According to national standards, 20-25 mg of tetrahydrothiophene should be added as odorant per cubic meter of gaseous natural gas. Natural gas is colorless and odorless, and the addition of odorant acts as an alarm. At present, the equipment for adding odor to natural gas mainly includes: 1) electromagnetic pumps used in gaseous (low pressure) state; 2) motor pumps used in liquid (high pressure) state. Electromagnetic pumps or motor pumps are composed of multiple parts, and each part has dimensional tolerances during the production process. Therefore, there are differences in the single injection volume of finished motor pumps or electromagnetic pumps, and they cannot be guar...

Claims

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Application Information

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IPC IPC(8): F16K1/14F16K1/32F16K1/54
CPCF16K1/02F16K1/14F16K1/32F16K1/54
Inventor 莫中振
Owner 莫中振