CN203585821U

CN203585821U - Fuel gas odorization device

Info

Publication number: CN203585821U
Application number: CN201320721182.2U
Authority: CN
Inventors: 吴禹
Original assignee: LESHANG BEICHUANG MACHINERY MANUFACTURING Co Ltd
Current assignee: LESHANG BEICHUANG MACHINERY MANUFACTURING Co Ltd
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2014-05-07
Anticipated expiration: 2023-11-15

Abstract

The utility model discloses a fuel gas odorization device which is characterized by comprising an odorization agent filling nozzle, a filling switch, a check valve, an odorization valve, a pressure gauge, a pressure valve, a one-way valve A, a measuring pump, an anti-explosion switch, an anti-explosion junction box, a one-way valve B, a stop valve, a filter, an overhead valve, a liquid level meter, a bottom valve, a return valve, a respirator, a charging valve, a liquid storage tank, a blowdown valve and a controller. The odorization agent (thiophane THT) is pumped out of an odorization agent storage tank and pumped into a fuel gas transmission and distribution main pipe to realize odorization through the miniature diaphragm measuring pump. The fuel gas odorization device has the advantages that the device has a manual operation and full-automatic operation switching function, and flexible odorization is achieved; flow detection and signal collecting and transmission are performed on the fuel gas odorization device to achieve accurate odorization, and signals are fed back to a computer; the computer controls the measuring pump odorization agent amount according to set odorization amount required by each cubic meter of fuel gas flow, natural gas odorization effect is guaranteed, and application safety of users is guaranteed effectively.

Description

Apparatus for making gas ordorous

Technical field

The utility model relates to a kind of making gas ordorous technical field, is specifically a kind of apparatus for making gas ordorous.

Background technique

In gas supply process, if there is gas leakage, easily form on the one hand explosive mixture, set off an explosion; Easily cause that on the other hand personnel are poisoned to death, and cause casualties and property loss.Thereby in order to find in time the gas leakage control gas leakage of adopting an effective measure in time, city gas conventionally need to be installed alarm so that according to airborne odor unit alarm gas leakage situation in supply process.Conventionally in combustion gas, the minimum flow of odorant should meet the following provisions in the > > of < < Code for design of city gas engineering: (1) nontoxic gas leakage is in air, reach lower explosion limit 20% time, should be able to discover in time; (2) poisonous gas leakage should be able to be discovered when reaching harmful concentration that human body is allowed in air, for example, for the combustion gas take carbon monoxide as toxic substance, when CO in Air content reaches 0.02% (percentage by volume), alarm should be able to be discovered.

The conventional odorant of fuel gases of China is tetrahydrothiophene, is according to the regulation of above-mentioned < < Code for design of city gas engineering > >, adds a certain amount of odorant in combustion gas.

Gas gas consumption in supply process is inhomogeneous, be in particular in month, day, time inhomogeneous upper, therefore gas consumption is always in real-time change, odorizing amount also must change along with the variation of gas quantity like this.Odorant is joined and in gas pipeline, needs a set of mechanical device, and need accurately to control odorizing amount.Hence one can see that adds smelly system and should comprise machinery and control system, should have corresponding power system simultaneously.And the advance that adds smelly system is mainly manifested on the levels of precision of controlling odorizing amount.

In order to guarantee operation and the personal safety of gas transmission and distribution system, according to GB50028 < < Code for design of city gas engineering > > standard, stipulate; City gas should have the stink that can discover, to odorless or not enough combustion gas, must add the gas transmission and distribution system of being allowed for access after smelly processing.

Model utility content

The purpose of this utility model is to provide a kind of apparatus for making gas ordorous at this.This automatic stink adding device for gas is mainly extracted and is pumped into odorant (tetrahydrothiophene THT) out in gas transmission and distribution house steward realization by Miniature Diaphragm Metering Pump and adds smelly from store up smelly dose of tank.This device has manually and full-automatic switching function mutually, adds smelly mode flexible.In order to reach, accurately add smelly object, in transmission & distribution house steward, be provided with flow detection, signals collecting and transmission and by signal feed back to computer.Computer, according to the required odorizing amount of every cubic metre of gas flow, the control odorizing by dosing pump dosage set, is guaranteed smelly effect of adding of rock gas, and effective guarantee user uses safety.

The utility model is to realize like this, construct a kind of apparatus for making gas ordorous, it is characterized in that: comprise odorant injection nozzle, inject switch, safety check, add smelly valve, pressure gauge, pressure valve, one-way valve A, metering pump, flame-proof switch, anti-explosion terminal box, one-way valve B, stop valve, filter, overhead-valve, level meter, bottom valve, reflux valve, resuscitation apparatus, charging valve, liquid container, blowdown valve, controller;

Described metering pump connects controller by flame-proof switch, anti-explosion terminal box respectively; Described liquid container upper and lower end arranges respectively charging valve and blowdown valve, and liquid container side arranges level meter;

Described level meter upper and lower end arranges overhead-valve, bottom valve, metering pump connects filter by one-way valve B, stop valve, in odorant injection nozzle access gas pipeline, odorant injection nozzle, inject switch, safety check, add smelly valve, reflux valve connects by pipeline respectively, on this pipeline, be also connected with pressure gauge, pressure valve, one-way valve A, one-way valve A is connected with metering pump.

The utility model has the advantage of: apparatus for making gas ordorous described in the utility model, this device tool has the following advantages:

(1): by the odorant amount of setting per unit volume combustion gas, realize and continuously, evenly, accurately add smellyly, add the impact that smelly concentration is not changed by gas flow, temperature, pressure;

(2): can receive multichannel 4-20mA flowmeter current signal and mark condition pulse signal simultaneously, realize the intelligent control to metering pump chemical feeding quantity.

(3): can realize flexibly single-point and multiple spot adds smelly simultaneously; Manually, automatically switch arbitrarily; During manual mode, can realize time control function, according to the different time periods, the different dosing frequencys are manually set;

(4): touch key setting, keyboard operation is flexible, easy operating; Automatically receive sampled signal, data upload;

(5): controller can receive 7 road flow meter signals, controller superposes after the flow meter signal of each road, output control signal; LCD can show accumulative total dosing number of times and instantaneous dosing frequency; There is storage and the query function of dosing data; Before can matching, change the miniature Chinese character printer of paper, at any time, time printing chemical feeding quantity; Possesses RS485 communication function; Can match low liquid level sound and light of alarm; Add smelly system hermetically sealed, failure rate is low.

Accompanying drawing explanation

Fig. 1 is apparatus for making gas ordorous structural representation described in the utility model

Wherein: odorant injection nozzle 1, inject switch 2, safety check 3, add smelly valve 4, pressure gauge 5, pressure valve 6, one-way valve A7, metering pump 8, flame-proof switch 9, anti-explosion terminal box 10, one-way valve B11, stop valve 12, filter 13, overhead-valve 14, level meter 15, bottom valve 16, reflux valve 17, resuscitation apparatus 18, charging valve 19, liquid container 20, blowdown valve 21, controller 22.23, power line, 24, guide line.

Embodiment

Below in conjunction with accompanying drawing 1, the utility model is elaborated, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.

As shown in Figure 1, the utility model provides a kind of apparatus for making gas ordorous, comprises odorant injection nozzle 1, injects switch 2, safety check 3, adds smelly valve 4, pressure gauge 5, pressure valve 6, one-way valve A7, metering pump 8, flame-proof switch 9, anti-explosion terminal box 10, one-way valve B11, stop valve 12, filter 13, overhead-valve 14, level meter 15, bottom valve 16, reflux valve 17, resuscitation apparatus 18, charging valve 19, liquid container 20, blowdown valve 21, controller 22.

Described metering pump 8 connects controller 22 by flame-proof switch 9, anti-explosion terminal box 10 respectively; Described liquid container 20 upper and lower end arrange respectively charging valve 19 and blowdown valve 21, and liquid container 20 sides arrange level meter 15.

Described level meter 15 upper and lower end arrange overhead-valve 14, bottom valve 16, metering pump 8 connects filter 13 by one-way valve B11, stop valve 12, odorant injection nozzle 1 accesses in gas pipeline, odorant injection nozzle 1, inject switch 2, safety check 3, add smelly valve 4, reflux valve 17 connects by pipeline respectively, on this pipeline, be also connected with pressure gauge 5, pressure valve 6, one-way valve A7, one-way valve A7 is connected with metering pump 8.

Resuscitation apparatus 18 in figure: when pressure is less than setting pressure in liquid container, resuscitation apparatus cuts out; When exceeding setting pressure in liquid container, resuscitation apparatus is opened pressure release.To guarantee safety.

Overhead-valve 14, bottom valve 16 in figure: as connection valve, open and close level meter 15.When it is all opened, can from level meter 15, reflect in liquid container the amount of smelly dose; When it is all closed, can when the normal work of this device, overhaul, change level meter.

Controller, according to the size output corresponding frequencies signal of gas flow signal, is controlled metering pump, by one-way valve A, one-way valve B, suck, discharge smelly dose, by liquid container smelly dose through nozzle ejection, evenly join in gas pipeline, complete and add smelly work.

To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To these embodiments' multiple modification, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. an apparatus for making gas ordorous, is characterized in that: comprise odorant injection nozzle (1), inject switch (2), safety check (3), add smelly valve (4), pressure gauge (5), pressure valve (6), one-way valve A(7), metering pump (8), flame-proof switch (9), anti-explosion terminal box (10), one-way valve B(11), stop valve (12), filter (13), overhead-valve (14), level meter (15), bottom valve (16), reflux valve (17), resuscitation apparatus (18), charging valve (19), liquid container (20), blowdown valve (21), controller (22); Described metering pump (8) connects controller (22) by flame-proof switch (9), anti-explosion terminal box (10) respectively; Described liquid container (20) upper and lower end arranges respectively charging valve (19) and blowdown valve (21), and liquid container (20) side arranges level meter (15);

Described level meter (15) upper and lower end arranges overhead-valve (14), bottom valve (16), metering pump (8) is by one-way valve B(11), stop valve (12) connects filter (13), in odorant injection nozzle (1) access gas pipeline, odorant injection nozzle (1), inject switch (2), safety check (3), add smelly valve (4), reflux valve (17) connects by pipeline respectively, on this pipeline, be also connected with pressure gauge (5), pressure valve (6), one-way valve A(7), one-way valve A(7) be connected with metering pump (8).