CN2227332Y

CN2227332Y - CO smoke equilibrating sampling pipe frame

Info

Publication number: CN2227332Y
Application number: CN 95216337
Authority: CN
Inventors: 赵金宝
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-20
Filing date: 1995-07-20
Publication date: 1996-05-15
Anticipated expiration: 2005-07-20

Abstract

The utility model relates to a CO smoke equilibrating sampling pipe frame which utilizes the CO overproof automatic cutting device of the straight type gas water heater. Four sampling pipes (1) with X-shaped structures are collected and fixed between an air outlet pipe (3) and a fixing disc (4) to form the utility model. The opening of the air outlet pipe is provided with a gas sensor frame (2). The sampling pipes are slantwise arranged, the top parts of the sampling pipes are provided with support feet (5), and the bottoms of the sampling pipes are provided with a plurality of fume inlets (6) which are arranged at equal intervals. The utility model can change the collected fume at multipoint into the fume with the average value of the CO concentration to act on the sensor according to the requirement of BG6932-94, can accurately reflect the combustion condition of the water heater, and can improve the safety protection function of the automatic cutting device.

Description

The balanced stand for sample tube of CO flue gas

The utility model belongs to the gas heater safety device, particularly a kind of exceed standard balanced stand for sample tube of CO flue gas of automatic disconnecting device of straight-line gas instantaneous water heater CO that is used for.

Along with the raising of living standards of the people, the improvement of living conditions, gas heater enters huge numbers of families, but since water heater manufacture and design defective and improper use, often have human casualty accident to take place, trace it to its cause, because of CO gas in the discharged flue gas exceeds standard, cause due to the poisoning often.Therefore, many countries have formulated relevant criterion to manufacturing and designing of water heater.China revised the national standard (GB6932-94) of " domestic gas-fired water heater " again in 1994.Provided production standard (referring to reference Figure 10) that the straight-line gas heater measures the method for CO concentration in flue gas and smoke sampling device in this standard especially and manufactured and designed one of quality standard as the standard water heater.Be installed on the last plane of the heat exchanger of water heater as the sampler of reference this X-shaped structure shown in Figure 10, the flue gas that can differ the CO concentration of multiple spot bigger is gathered simultaneously, and be pooled to the mean value that central mixing forms CO content, pumped in the flue gas analyzer by aspiration pump again and detect.It has more scientifically solved the balanced problems of measurement of atmosphere.

Prior art " gas heater CO exceed standard automatic disconnecting device " is (referring to Chinese patent: 94207793.8) be made up of flue gas recirculation pipe and control circuit.Gas sensor in the flue gas recirculation pipe becomes electric signal with CO content in smoke and gives control circuit, when CO exceeds standard, realizes reporting to the police and cutting off gas circuit, and be a kind of more satisfactory safety device.The circulation pipe of three kinds of versions that this patent provided is all got the gas sample with point, gets the requirement of gas sample not in full conformity with GB regulation.

Utilize control circuit of the prior art, the principle of getting the gas sample in conjunction with the equilibrium of CO smoke sampling device in the GB, the purpose of this utility model provides a kind of exceed standard balanced stand for sample tube of CO flue gas of automatic disconnecting device of straight-line gas instantaneous water heater CO that is used for, to improve the security protection performance of automatic disconnecting device.

The technical solution of the utility model is to adopt the X-shaped version of smoke sampling device in the GB, the method of CO mean concentration in the monitoring flue gas, four stopple coupons are compiled with degree of being inclined upwardly necessarily be fixed between central horn-like escape pipe and the taper shaft collar, open gas mixer chamber of middle formation, the gas sensor that the mouth of pipe of giving vent to anger is installed is in the mixing chamber, and sensor is connected with control circuit with lead.Uniformly-spaced arranging the mouth that advances that the material size successively decreases successively at the bottom of every stopple coupon, the stopple coupon top is provided with leg and gets gas sample requirement for height to satisfy GB6932-94 regulation.

The utility model is installed on the last plane of the heat exchanger of straight-line gas instantaneous water heater, during the water heater operation, discharged flue gas enters stopple coupon by respectively advancing mouth, since stopple coupon tilt to go up to, help hot flue gas and rise mobilely naturally, the average mixed flue gas of formation CO content acts on gas sensor, when the CO content overproof, (setting is arranged) in the GB, control circuit is realized reporting to the police and cutting off gas circuit, prevents that personal intoxication accident from taking place, and plays the security protection effect.

Though not being both of the utility model and smoke sampling device all is X-shaped version, sampler is a kind of standardized straight pipe type structure, and must mixed gas be pumped in the flue gas analyzer with aspiration pump by mesotube and detect.Thereby it is a kind of a kind of device that detects the water heater quality, a kind of standard metrology appliance.And the parts of the utility model safety device during to be a kind of water heater use, flue gas is mobile naturally, need not additionaling power, and stopple coupon can select the different cross section shape for use, to satisfy different decorative appearance designing requirements.

The utility model is compared with flue gas recirculation pipe in the prior art, its advantage is conspicuous, because the monitoring of the gas sensor in the stand for sample tube is the mean concentration that the multiple spot flue gas forms CO content, the combustion conditions of reflect heat hydrophone more accurately, meet GB6932-94 requirement, for the security protection performance of improving automatic disconnecting device provides scientific basis.

Fig. 1, balanced stand for sample tube front elevation

Fig. 2, balanced stand for sample tube top view

Among the figure: 1, stopple coupon; 2, gas sensor frame; 3, escape pipe; 4, shaft collar; 5, leg; 6, advance mouth.

Now in conjunction with the accompanying drawings and embodiments the utility model is done an explanation.

As shown in Figure 1, 2, the utility model is compiled by four stopple coupons 1 that become the X-shaped symmetrical structure and is fixed between tubaeform escape pipe 3 and the taper shaft collar 4, and the mouth of pipe of giving vent to anger is clamping gas sensor frame 2 and forms.The stopple coupon top is provided with leg 5, support foot hight h, and first that should make stopple coupon advances mouth apart from heat exchanger plane 20mm.The degree of tilt of stopple coupon is H-h/l, the distance of the H end face that is the leg bottom surface to the stopple coupon in the formula; H is the distance of foot bottom to the stopple coupon bottom surface; The distance (as Fig. 1,2 signs) of the l end face that is the stopple coupon top to the stopple coupon.Size H, h, l value to determine that planar dimension according to the heat exchanger of water heater comes fixed, principle is that the catercorner length of stand for sample tube is identical or close with heat exchanger plane catercorner length.

Gas sensor frame 2 is to utilize the projection of its both sides to be installed on escape pipe 3 ports, and it is used for installing and fixing gas sensor, and sensor head is in the mixing chamber, and sensor is communicated with control circuit with lead.

The shape of cross section of stopple coupon 1 can be tubular structures such as circle, rectangle, square, cydariform, trapezoidal, triangle.

As shown in Figure 2: each stopple coupon bottom surface be provided with some uniformly-spaced arrange advance mouth 6, advance mouth and be shaped as rectangle or circular port.Advancing the mouth size is risen by first mouthful of top and successively decreases by a certain percentage.The mouth quantity of advancing on every stopple coupon is 4～8.

The utility model is in implementation process, and stopple coupon, escape pipe, shaft collar adopt copper or stainless steel material, and also available section bar shapes, and employing is welded to connect fixing between them.The gas sensor frame is made with the common metal material.

Claims

1, a kind of exceed standard balanced stand for sample tube of CO flue gas of automatic disconnecting device of straight-line gas heater CO that is used for, it is characterized in that four become the X-shaped structure, the top has leg (5), bottom surface to have into the stopple coupon (1) of mouth (6) compile to be fixed between escape pipe (3) and the shaft collar (4), escape pipe (3) the port gas sensor (2) that has been installed.

2, stand for sample tube according to claim 1 is characterized in that the shape of cross section of described stopple coupon (1) is circular or square or rectangle or trapezoidal or triangle or cydariform.

3, stand for sample tube according to claim 1 is characterized in that described stopple coupon (1) is acclivitous.

4, stand for sample tube according to claim 1 is characterized in that describedly advancing mouth (6) and uniformly-spaced arranging, and its size is successively decreased in proportion.

5,, it is characterized in that describedly advancing mouth (6) and being shaped as circle or rectangle according to claim 1 or 4 described stand for sample tube.