CN201000352Y - Low-temperature resistant explosion prevention floating ball level meter - Google Patents

Low-temperature resistant explosion prevention floating ball level meter Download PDF

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Publication number
CN201000352Y
CN201000352Y CNU2007200025930U CN200720002593U CN201000352Y CN 201000352 Y CN201000352 Y CN 201000352Y CN U2007200025930 U CNU2007200025930 U CN U2007200025930U CN 200720002593 U CN200720002593 U CN 200720002593U CN 201000352 Y CN201000352 Y CN 201000352Y
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CN
China
Prior art keywords
conduit
ball float
electric heating
cable
guide groove
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2007200025930U
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Chinese (zh)
Inventor
王艳江
Original Assignee
王艳江
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Filing date
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Application filed by 王艳江 filed Critical 王艳江
Priority to CNU2007200025930U priority Critical patent/CN201000352Y/en
Application granted granted Critical
Publication of CN201000352Y publication Critical patent/CN201000352Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a low temperature resistant and explosion proof ball float liquid level meter, which mainly solves the problem that the existing ball float liquid level meter used on the oil storage tank cannot finish the measurement of the liquid surface height in the tank body under the low temperature condition. The utility model is characterized in that the liquid level meter also comprises an intelligent thermostat, a solid state relay, a thermal resistance, an electric heating soft tube, an orientated guide slot (2), a conduit tube (4) and a guide slot locator (1), wherein a ball float (6) adopts a hollow ball body, which is welded and sealed with the conduit tube (4) on the contact surface formed by the conduit tube (4) after passing through the center of the ball float, a thermal resistance (7) and a electric heating soft tube (5) are positioned in the cavity body formed by the inner wall of the ball float (6) and the outer wall of the conduit tube (4), the electric heating soft tube (5) coils round the inner wall of the ball float (6), and the thermal resistance (7) is vertically fixed in the cavity body. The low temperature resistant and explosion proof ball float liquid level meter can normally work under the low temperature environment in the cold winter, and can accurately measure the liquid level in the crude oil storage tank.

Description

Low temperature resistant explosion-proof floating ball lever meter
Technical field:
The utility model relates to used a kind of level instruction device on the storage tank of oil field, relates to a kind of float-ball type liquid level gauge with low temperature resistant function specifically.
Background technology:
Principle that floating ball lever meter mainly is based on buoyancy is measured the liquid level of liquid in the tank body, promptly float at liquid surface, just send device to show by the angular displacement in the primary instrument rising and the following drop data of liquid by the respective sensor that connects with ball float by ball float.When the floating ball lever meter of this routine is applied to China's southern area, do not find to exist limitation, but when being applied in China the Northeast, but find to exist a bigger defective, the measurement of liquid level in promptly this kind floating ball lever meter can't be finished tank body under low temperature condition.The winter of the Northeast is because of RELATION TO CLIMATE, reach subzero more than 30 degree when temperature is minimum, and the solidifying point of crude oil is generally between subzero 35 ℃ to subzero 50 ℃, therefore in winter of cold, will form one deck at the top of crude oil storage tank and freeze oil reservoir, make floating ball lever meter can't accurately measure the liquid level in the tank body thus.
The utility model content:
For solve the existing floating ball lever meter that is used on the storage tank can't under low temperature condition, finish to tank body in the problem of level gauging, the utility model provides a kind of low temperature resistant explosion-proof floating ball lever meter, operate as normal in can be the in the winter time cold low temperature environment of the low temperature resistant explosion-proof floating ball lever meter of this kind can be measured the liquid level in the crude oil storage tank accurately.
The technical solution of the utility model is: the low temperature resistant explosion-proof floating ball lever meter of this kind, comprise the primary instrument gauge outfit, ball float, intelligent temperature controller, solid-state relay, thermistor, electric heating flexible pipe and a directed guide groove, conduit and guide groove steady arm, wherein, ball float is the spheroid of hollow, after passing its center, conduit does welded seal with conduit on the formed surface of contact, thermistor, the electric heating flexible pipe all is positioned at the formed cavity of outer wall of ball float inwall and conduit, described electric heating flexible pipe coils along the ball float inwall, described thermistor vertical fixing in cavity, the cable that is respectively described electric heating flexible pipe and thermistor formation current return is drawn by the lead seal bore that has on the conduit.After described directed guide groove passed the center of described conduit, the upper end connected with the flange that is connected with the primary instrument gauge outfit, and lower end and guide groove steady arm link, and the two ends up and down of described conduit are equipped with the conduit sealed rubber ring.Be connected in by the metallic cable of drawing on the bull wheel in the primary instrument gauge outfit on the equilibrium point of the community that conduit and ball float constitute.The temperature signal input end of described intelligent temperature controller links to each other with the two ends of thermistor through cable, the control contact output terminal of described solid-state relay through cable connection in the current return of electric heating flexible pipe, the control contact input end of described solid-state relay is through the control signal output ends of cable connection in intelligent temperature controller, introduces the signal cable and the power cable that connect respective element behind the directed guide groove by flange center and all places plastic metal Explosion-proof host.
The utlity model has following beneficial effect: owing to take such scheme, working temperature reaches and sets down in limited time in ball float, intelligent temperature controller is effectively controlled the closing of contact of solid-state relay, make the electric heating flexible pipe energising heating that is positioned at ball float inside, thereby guarantee that the ball float temperature constant is more than former oil freezing point, make operate as normal in can be the in the winter time cold low temperature environment of this floating ball lever meter, can measure the liquid level in the crude oil storage tank accurately.
Description of drawings:
Fig. 1 is a schematic appearance of the present utility model.
Fig. 2 is an inner structure synoptic diagram of the present utility model.
Fig. 3 is an electrical schematic diagram of the present utility model.
Fig. 4 is a terminal row wiring diagram of the present utility model.
Fig. 5 is the structural representation of directed guide groove in the utility model.
Fig. 6 is the structural representation of conduit in the utility model.
1-guide groove steady arm among the figure, the directed guide groove of 2-, 3-conduit sealed rubber ring, 4-conduit, 5-electric heating flexible pipe, 6-ball float, 7-thermistor, 8-lead seal bore, the plastic metal Explosion-proof host of 9-, 10-power lead, 11-signal wire, 12-metallic cable, 13-flange.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As Fig. 1~shown in Figure 6, the low temperature resistant explosion-proof floating ball lever meter of this kind, comprise primary instrument gauge outfit, ball float 6, intelligent temperature controller, solid-state relay, thermistor 7, electric heating flexible pipe 5 and directed guide groove 2, conduit 4 and a guide groove steady arm 1, the structure of conduit 4 as shown in Figure 6, the structure of directed guide groove 2 as shown in Figure 5, the guide groove steady arm is to fix in the bottom of jar, is that straight line reduces the error in the measurement so that guarantee directed guide groove and being connected of instrument head.
Wherein, ball float 6 is the spheroid of hollow, after passing its center, conduit 4 does welded seal with conduit 4 on the formed surface of contact, thermistor 7, electric heating flexible pipe 5 all are positioned at the inwall of ball float 6 and the formed cavity of outer wall of conduit 4, described electric heating flexible pipe 5 coils along ball float 6 inwalls, described thermistor 7 vertical fixing in cavity, the cable that is respectively described electric heating flexible pipe 5 and thermistor 7 formation current returns is drawn by the lead seal bore that has on the conduit 4.After described directed guide groove 2 passes the center of described conduit 4, the upper end connects with the flange 13 that is connected with the primary instrument gauge outfit, lower end and guide groove steady arm 1 link, the two ends up and down of described conduit 4 are equipped with conduit sealed rubber ring 3, main like this is to prevent that power supply meets accident because of the accident electric leakage in the ball float, after simultaneously preventing that also directed guide groove from passing conduit,, ball float produces electrostatic spark because of moving up and down the phase mutual friction.In addition, be connected in by the metallic cable 12 of drawing on the bull wheel in the primary instrument gauge outfit on the equilibrium point of the community that conduit 4 and ball float 6 constituted, when mounted, after the community that primary instrument metallic cable 12 connecting ducts 4 in front and ball float 6 are constituted, by instrument in front rolling wheel motor balance ball float and the weight of connecting line, with the precision of guarantee measuring.
The temperature signal input end of described intelligent temperature controller links to each other through the two ends of cable with thermistor 7, in the current return of electric heating flexible pipe 5, the control contact input end of described solid-state relay is through the control signal output ends of cable connection in intelligent temperature controller through cable connection for the control contact output terminal of described solid-state relay.
Signal cable and the power cable of being introduced directed guide groove 2 back connection respective element by flange 13 centers all place plastic metal Explosion-proof host 9, this Explosion-proof host can adopt foldable structure, to the power supply signal line by fixing direction when the rise and fall of ball float and telescopic folding.
For obtaining explosion-proof preferably and effect, signal cable and the power cable of being introduced directed guide groove 2 back connection respective element by flange 13 centers all can adopt foam cables.In addition, for preventing electric current, the isolating switch of can also in the current return of electric heating flexible pipe 5, contacting with overcurrent protection function.
During actual the use, intelligent temperature controller, solid-state relay are installed in the on-the-spot instrument control box, and other parts are installed in the tank body and tank body on, start intelligent temperature controller, prescribe a time limit when the ball float heating-up temperature arrives on the design temperature, the temperature signal that is sent by thermistor 7 makes intelligent temperature controller cut off the signal input end of solid-state relay, thereby the contact of solid-state relay is disconnected, the current return of electrothermal tube is disconnected, stop heating.In like manner, when the ball float temperature arrives design temperature down in limited time, the temperature signal that is sent by thermistor 7 makes intelligent temperature controller connect the signal input end of solid-state relay, thereby make the closing of contact of solid-state relay, make the current return closure of electrothermal tube, thereby make the electrothermal tube normal heating, so just can realize control by setting intelligent temperature controller temperature inside range of control to tank body inner float ball environment temperature, make it forever constant below condensation point of crude oil, thereby guarantee that this floating ball lever meter measures under the condition of low temperature in the winter time normally.

Claims (3)

1, a kind of low temperature resistant explosion-proof floating ball lever meter, comprise primary instrument gauge outfit, ball float (6), it is characterized in that: described liquid level gauge also comprises intelligent temperature controller, solid-state relay, thermistor (7), electric heating flexible pipe (5) and a directed guide groove (2), conduit (4) and guide groove steady arm (1)
Wherein, ball float (6) is the spheroid of hollow, after passing its center, conduit (4) does welded seal with conduit (4) on the formed surface of contact, thermistor (7), electric heating flexible pipe (5) all are positioned at the inwall of ball float (6) and the formed cavity of outer wall of conduit (4), described electric heating flexible pipe (5) coils along ball float (6) inwall, described thermistor (7) vertical fixing in cavity, the cable that is respectively described electric heating flexible pipe (5) and thermistor (7) formation current return is drawn by the lead seal bore (8) that has on the conduit (4);
After described directed guide groove (2) passed the center of described conduit (4), the upper end connected with the flange that is connected with the primary instrument gauge outfit (13), and lower end and guide groove steady arm (1) link, and the two ends up and down of described conduit (4) are equipped with conduit sealed rubber ring (3);
Be connected in by the metallic cable of drawing on the bull wheel in the primary instrument gauge outfit (12) on the equilibrium point of the community that conduit (4) and ball float (6) constituted;
The temperature signal input end of described intelligent temperature controller links to each other through the two ends of cable with thermistor (7), in the current return of electric heating flexible pipe (5), the control contact input end of described solid-state relay is through the control signal output ends of cable connection in intelligent temperature controller through cable connection for the control contact output terminal of described solid-state relay;
Signal cable and the power cable of being introduced connection respective element in directed guide groove (2) back by flange (13) center all place plastic metal Explosion-proof host (9).
2, low temperature resistant explosion-proof floating ball lever meter according to claim 1 is characterized in that: signal cable and the power cable of being introduced connection respective element in directed guide groove (2) back by flange (13) center are foam cables.
3, low temperature resistant explosion-proof floating ball lever meter according to claim 1 and 2 is characterized in that: isolating switch with overcurrent protection function of polyphone in the current return of electric heating flexible pipe (5).
CNU2007200025930U 2007-01-29 2007-01-29 Low-temperature resistant explosion prevention floating ball level meter Expired - Fee Related CN201000352Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200025930U CN201000352Y (en) 2007-01-29 2007-01-29 Low-temperature resistant explosion prevention floating ball level meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200025930U CN201000352Y (en) 2007-01-29 2007-01-29 Low-temperature resistant explosion prevention floating ball level meter

Publications (1)

Publication Number Publication Date
CN201000352Y true CN201000352Y (en) 2008-01-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200025930U Expired - Fee Related CN201000352Y (en) 2007-01-29 2007-01-29 Low-temperature resistant explosion prevention floating ball level meter

Country Status (1)

Country Link
CN (1) CN201000352Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266729A (en) * 2014-09-13 2015-01-07 国家电网公司 Anti-freezing float type water level gauge
CN106017615A (en) * 2016-07-20 2016-10-12 哈尔滨今星微电子科技有限公司 Absolute level meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266729A (en) * 2014-09-13 2015-01-07 国家电网公司 Anti-freezing float type water level gauge
CN106017615A (en) * 2016-07-20 2016-10-12 哈尔滨今星微电子科技有限公司 Absolute level meter

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080102

Termination date: 20110129

C17 Cessation of patent right