CN200950068Y - Roots gas flowmeter batch meter - Google Patents

Abstract

The utility model relates to a flowmeter measuring pocket of an integral structure composed of a Roots gas flowmeter and a case. The air outlet of a filter located in the case communicates with the air inlet of the Roots meter through a connecting pipe. The air inlet of the filter and the air outlet of the Roots meter are respectively communicated with the air inlet of the filter and the air outlet of the Roots meter through a valve. And the interfaces of the air inlet and outlet of the valve are arranged at the outside of the case. The first advantage of the utility model is to have a novel, unique, simple, reliable and practical structure design which initiates the integration of measuring and installing of a fuel gas measurement device; the second is to have a compact structure, an easy and rapid installation, space occupying free, labor and time saving and a low installing cost; the third is to effectively prevent others from stealing gas illegally; the fourth is to realize industrialization batch production and installation with a stable and reliable performance with no bad phenomenon like gas leaking, etc. The fifth is that the utility model can effectively prevent the welding slag and rust slag during a pipeline installation from entering the meter to cause meter blocking phenomenon by adopting the filter.

Description

Gauging box of Roots gas flowmeter

Technical field:

The utility model relates to a kind of Roots's gas meter and casing constitutes integrally-built flowmeter batch meter, belongs to the flowmeter batch meter and makes the field.

Background technology:

At present, unit gas, it no matter is intellectual, or mechanical type Roots gas meter Unit Installation, all require usefulness gas unit to build special installation room, not only the cycle is long, cost is high, and takes up room, be inconvenient to install, particularly on-the-spot installation is subjected to the restriction of place and checkout equipment, can't guarantee the reliability of its installation, easily produces phenomenons such as gas leakage; Secondly, can't implement to supervise effectively, indivedual illegal users utilize the situation of the imperfection (not having anti-theft feature) of feeder existence itself to steal gas, cause unnecessary massive losses for air feed unit.

Summary of the invention:

Purpose of design: avoid the weak point in the background technology, one provide a kind of by measuring apparatus intellectual or that mechanical type Roots gas meter constitutes, this measuring apparatus and casing are combined as a whole, make its a series of activities that before dispatching from the factory, can finish air feed metering, anti-gas-leak check, guarantee the safe reliability of its air feed; The 2nd, have antitheft function, prevent other people the unpacking gas of stealing; The 3rd, conveniently install and take up room minimum.

Design proposal: in order to realize above-mentioned purpose of design.1, the one, with the metering gas device and the integrant gas flow flowmeter measuring pocket of casing of filtrator and Roots's gauging table formation, be one of feature of the present utility model.The maximum characteristics of this kind structure: the fixing support rack that the measurement of gas flow device that is made of filtrator and Roots's gauging table is fixed in the casing presss from both sides, make to form fixing, stable, immovable location between filtrator and Roots's gauging table, guarantee the reliability that connects between the two; The 2nd, because filtrator and Roots's gauging table have satisfied the requirement of stablizing, locating, can detect it easily in therefore producing, guarantee the reliability of its meter gas air feed, avoided the gas leak phenomenon that may occur to greatest extent.2, being positioned at and adopting by-pass valve to be communicated with between two valves of casing, is two of feature of the present utility model.The purpose that by-pass valve is set between two valves is: when filtrator need be cleared up or Roots when showing to need maintenance or verification, as long as open by-pass valve, even when cleaning or maintenance or verification gas flow counter device, can can't not use gas owing to cleaning, maintenance, verification cause the user yet.3, connecting the connecting leg that filter outlet and Roots show import and be designed to U font structure, is three of feature of the present utility model.The purpose of U font connecting leg design is: the one, reduce to greatest extent fluid by the time resistance; The 2nd, convenient connection and connecting leg pipe shaft non junction fast, the gas leakage of having avoided the connecting leg pipe shaft to exist.4, casing sidepiece or face have and observe the window and directly to Roots's gauging table display screen of checking meter, and are four of features of the present utility model.It is long and cause the excessive defective of front install bin body thickness of table screen for fear of intellectual Roots table or mechanical type Roots table table body that the casing sidepiece is offered the window of checking meter, and makes intellectual Roots's table or mechanical type Roots show to install both convenient, is convenient to again check meter.5, the casing sidepiece has the design of Baiyesan-medicinal powder transom window, is five of feature of the present utility model.Because the utility model is the gas flow flowmeter measuring pocket, theoretically, both made again reliable meter, the possibilities that might leak gas all, therefore from safety, reliable, the angle of taking precautions against, the utility model is offered window shutter at the casing sidepiece, and to the gas leak phenomenon that contingency occurs, its gas can be shed by window shutter.The purpose of doing like this is: the one, can effectively avoid the excessive and unsafe conditions that causes of gas concentration in the case, and the 2nd, the gas that is used for discharging in the case is found its gas leak phenomenon, so that on-call maintenance.That is to say that window shutter system is just in case the strick precaution remedial measures under the situation.6, the casing back is provided with suspender, is six of feature of the present utility model.The purpose of this suspender setting is: install very conveniently, as long as stamp two pieces or four pieces of nails on wall, then its suspension is got final product thereon.Therefore, install the saving of labor, save time, efficient is high especially.7, cabinet door be provided with safety lock and doorframe around stud with sealing strip, be seven of feature of the present utility model.The setting of sealing strip, the one, can prevent entering of rainwater and harmful fluid effectively; The 2nd, can reduce the direct intrusion of dust, guarantee the comparatively safe of Roots type flowmeter measuring apparatus; The design of lock can prevent that the inoperative personnel from opening casing, has concurrently simultaneously to prevent other people unpacking function of stealing gas.8, being provided with the design of lead sealing between casing and door, is eight of feature of the present utility model.The function of lead sealing design is as the function of lead sealing on the electric energy meter, and it can prevent that not only other people from illegally stealing gas, and prevents that other people from arbitrarily opening the gas metering case.

Technical scheme: gauging box of Roots gas flowmeter, be positioned at filtrator (8) gas outlet of casing (9) and Roots table (2) air intake opening and be communicated with by connecting leg (1), the air intake opening of filtrator (8) and Roots's table (2) gas outlet are communicated with gas outlet that the air intake opening and the Roots of filtrator (8) show (2) by valve (7 and 3) respectively and the interface of valve (7 and 3) inlet, outlet is positioned at outside the casing (9).

The utility model is compared with background technology, the one, structural design novelty, uniqueness, simple, reliable, practical, started the combustible gas metering arrangement metering, install integrated; The 2nd, compact conformation, easy for installation, quick, and do not take up room, the saving of labor, save time, installation cost is low; The 3rd, can effectively prevent other people and illegally steal gas; The 4th, realized industrialized mass production and installation, and metering performance is stable, reliable, can not produce bad phenomenon such as gas leakage; The 5th, be not only applicable to the incorporate production of flow metering of various flow quantity intelligent formula Roots tables, and be applicable to the incorporate production of flow metering of various flow mechanical type Roots tables; The 6th, because Roots's (waist wheel) gas meter machining precision height, easily blocked and can't work by foreign material, the utility model adopts filtrator not only can prevent effectively that welding slag, anvil cinder in the piping erection from entering Biao Nei and the card that causes shows and resembles.

Description of drawings:

Fig. 1 is the structural representation of first kind of embodiment of intellectual gauging box of Roots gas flowmeter.

Fig. 2 is the structural representation of second kind of embodiment of intellectual gauging box of Roots gas flowmeter.

Fig. 3 is the side-looking structural representation of Fig. 1 and Fig. 2.

Fig. 4 is the structural representation of first kind of casing.

Fig. 5 is the side-looking structural representation of first kind of casing.

Fig. 6 is the structural representation of intellectual the third embodiment of gauging box of Roots gas flowmeter.

Fig. 7 is the side-looking structural representation of Fig. 6.

Fig. 8 is the structural representation of first kind of embodiment of mechanical type gauging box of Roots gas flowmeter.

Fig. 9 is the structural representation of second kind of embodiment of mechanical type gauging box of Roots gas flowmeter.

Figure 10 is the structural representation of the third embodiment of mechanical type gauging box of Roots gas flowmeter.

Figure 11 is the structural representation of the third embodiment of mechanical type gauging box of Roots gas flowmeter.

Figure 12 is the structural representation of second kind of casing.

Figure 13 is the side-looking structural representation of second kind of casing.

Embodiment:

Embodiment 1: with reference to accompanying drawing 1,3～5.Gauging box of Roots gas flowmeter, (connecting leg 1 is U font one-piece construction by connecting leg 1 to be positioned at filtrator 8 gas outlets of casing 9 and Roots's table 2 air intake opening, or adopt straight tube and elbow to constitute U font structure) be communicated with, the air intake opening of filtrator 8 and Roots's table 2 gas outlet are communicated with the gas outlet of the air intake opening of filtrator 8 and Roots's table 2 by valve 7 and 3 respectively and the interface of valve 7 and 3 inlet, outlets is positioned at casing 9 outsides (interface is flange-interface or screw thread interface), adopt by-pass valve 5 to be communicated with between two valves 7 in the casing 9 and 3 connecting leg.Casing 9 gets final product by the prior art processing and fabricating with reference to attached Figure 4 and 5.Filtrator 8 and Roots's table 9 are prior art, are not described herein at this.Be positioned at the filtrator 8 of casing 9 and Roots's gas flow counter device that Roots's table 2 is constituted and adopt supporting and mounting bracket folder 1) locate this supporting and mounting bracket folder 1 and adopt prior art and processing technology to make, be not described herein at this.Casing 9 sidepieces or face have the window 11 and directly to Roots's gauging table display screen, casing 9 sidepieces have Baiyesan-medicinal powder transom window 12 of checking meter, and casing 9 is provided with suspender 13.9 of casings be provided with safety lock 14 and doorframe around stud with sealing strip, and casing 9 with between be provided with lead sealing 15.Described Roots's gas flow is counted intellectual Roots's gas meter or mechanical type Roots gas meter.

Embodiment 2: with reference to accompanying drawing 2 and 3.On the basis of embodiment 1, do not establish by-pass valve 5 between two valves 7 in the casing 9 and 3 connecting leg.

Embodiment 3: with reference to accompanying drawing 6 and 7.On the basis of embodiment 1, do not establish by-pass valve 5 between two valves 7 and 3 connecting leg and two valves 7 and 3 are positioned at outside the casing 9.

Embodiment 4: with reference to accompanying drawing 8.On the basis of embodiment 1, described Roots's gas flow is counted mechanical type Roots gas meter.

Embodiment 5: with reference to accompanying drawing 9.On the basis of embodiment 1 and 2, do not establish by-pass valve 5 between two valves 7 in the casing 9 and 3 connecting leg.

Embodiment 6: with reference to accompanying drawing 10.On the basis of embodiment 1 and 2, do not establish by-pass valve 5 between two valves 7 and 3 connecting leg and two valves 7 and 3 are positioned at outside the casing 9.

Embodiment 7: with reference to accompanying drawing 12 and 13.On the basis of embodiment 1, casing 9 fronts have the window 11 and directly to Roots's gauging table display screen of checking meter.

Need to prove: Roots's gas meter is meant Roots's (waist wheel) positive displacement gas meter.

What need understand is: though the foregoing description is to the utility model detailed explanation of contrasting; but these explanations are just to simple declaration of the present utility model; rather than to restriction of the present utility model; any innovation and creation that do not exceed in the utility model connotation all fall in the protection domain of the present utility model.

Claims (10)

1, a kind of gauging box of Roots gas flowmeter, it is characterized in that: be positioned at filtrator (8) gas outlet of casing (9) and Roots table (2) air intake opening and be communicated with by connecting leg (1), the air intake opening of filtrator (8) and Roots's table (2) gas outlet are communicated with gas outlet that the air intake opening and the Roots of filtrator (8) show (2) by valve (7 and 3) respectively and the interface of valve (7 and 3) inlet, outlet is positioned at outside the casing (9).

2, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: be positioned between the connecting leg of two valves (7 and 3) of casing (9) and adopt by-pass valve (5) to be communicated with.

3, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: be positioned at the filtrator (8) of casing (9) and Roots's gas flow counter device employing supporting and mounting bracket folder (10) location that Roots's table (2) is constituted.

4, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: connecting leg (1) is U font one-piece construction, or adopts straight tube and elbow to constitute U font structure.

5, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: interface is flange-interface or screw thread interface.

6, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: casing (9) sidepiece or face have the window of checking meter (11) and directly to Roots's gauging table display screen.

7, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: casing (9) sidepiece has Baiyesan-medicinal powder transom window (12).

8, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: casing (9) is provided with suspender (13).

9, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: casing (9) door be provided with safety lock (14) and doorframe around stud with sealing strip, and casing (9) with between be provided with lead sealing (15).

10, gauging box of Roots gas flowmeter according to claim 1 is characterized in that: described Roots's gas flow is counted intellectual Roots's gas meter or mechanical type Roots gas meter.

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