CN208311921U - The fuel tank of 3 fluid level control devices is had in a kind of oil pumping system - Google Patents
The fuel tank of 3 fluid level control devices is had in a kind of oil pumping system Download PDFInfo
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- CN208311921U CN208311921U CN201820956134.4U CN201820956134U CN208311921U CN 208311921 U CN208311921 U CN 208311921U CN 201820956134 U CN201820956134 U CN 201820956134U CN 208311921 U CN208311921 U CN 208311921U
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Abstract
The utility model discloses the fuel tanks that 3 fluid level control devices are had in a kind of oil pumping system, belong to hydrodynamic lubrication fuel tank field.It includes cabinet and three visual liquid level alarms, and three visual liquid level alarms are fixed at wall box, and use environment temperature is low compared with fuel tank internal, guarantees that the service life is longer for visual liquid level alarm electric elements inside；And the first visual liquid level alarm, second visual liquid level alarm and the visual liquid level alarm of the third from top to bottom successively longitudinal arrangement on wall box, each liquid level alarm controls an alarm point, it is desired to change wherein some alarm point position, one visual liquid level alarm of disassembly, which need to only be moved, can be realized, and if it is intended to changing the form of alarm point, the electrical alarm head that directly can more renew, or only need for electrical alarm head to be mounted on 180 ° of the visual liquid level alarm overturning of ontology lower end originally, so that electrical alarm head is located at ontology upper end, it is easy to operate, using flexible.
Description
Technical field
The utility model belongs to hydrodynamic lubrication fuel tank field, specifically, being related in a kind of oil pumping system with three
The fuel tank of point fluid level control device.
Background technique
In oil pumping system, it is sometimes necessary to 3 electrical controls, i.e. highest point are carried out to the liquid level of fuel tank, it is minimum
Point and certain intermediate point, typically now realize control, scheme is as follows using floating-ball level switch:
Oil tank flange is welded on top of oil-tank, and 3 floating-ball level switch protrude into fuel tank from top of oil-tank, then pass through floating ball
Liquid-level switch upper flanges link together with oil tank flange, carry out the fixation of floating-ball level switch；3 floating-ball level switch
There are tri- electrical alarm points of 1A, 2A and 3A, liquid level reaches respective point in fuel tank, and the floating ball of respective point will float, and drives corresponding
The magnetic switch of point will issue electric signal, each point liquid-level switch manufacturer can be set as needed into normally opened or normal
One of closed contact need to also install a visual liquidometer in fuel tank sidewall, to observe in fuel tank to observe oil tank liquid level
Liquid level condition.
Currently, this scheme has the disadvantage that
1) element cost is high: special 3 Floating Ball Liquid Level Controls switch, cost is just at 2,000 yuan or more；
2) oil tank flange is machined, and is being welded on fuel tank, and therefore, processing is complicated；
3) after 3 Floating Ball Liquid Level Controls switches perform fixation, the position of Liquid level point adjusts difficult；
4) after 3 Floating Ball Liquid Level Control switches perform, the form (normally opened or normally closed) of alarm point cannot be changed；
5) service life is relatively short: hydraulic oil or lubricating oil temperature are relatively high when due to oil pumping system work,
3 floating-ball level switch are placed in fuel tank internal, are in electrical component at higher temperature and work, can shorten its service life；
6) replacement cost is very high: 3 Floating Ball Liquid Level Control switches change alarm point form using user if necessary,
Then need replacing new Floating Ball Liquid Level Control switch.
Chinese patent notification number: CN204612786U, the day for announcing: the patent document of 2015-09-02 discloses a kind of nuclear power
Factory's reactor coolant pump bearing oil level switch calibration tool includes: simulation fuel tank, visual liquidometer and verification circuit；Simulation
The level height variation range of fuel tank is greater than or equal to main pump motor bearing fuel tank, and the tank wall for simulating fuel tank is equipped with valve
Oil-filled pipeline and delivery pipeline；Visual liquidometer shows the level value in simulation fuel tank；It is reacted with to be detected in verification circuit
The electrical connection of reactor coolant pump bearing oil level switch, and it is equipped with high level alarm and low-level alarm, the utility model nuclear power plant is anti-
Reactor coolant pump bearing oil level switch calibration tool is answered effectively to simulate reactor coolant pump bearing fuel tank and oil tank liquid level
Real change, and the function of oil level switch and the alarming value of oil level switch are verified using external verification circuit, effectively
Solve the problems, such as reactor coolant pump bearing oil level switch verify it is at high cost, verification difficulty it is big.The deficiency of the utility model
Place is mainly as follows: monitoring only with visual liquidometer to fuel tank internal liquid level, for 3 points of electric-controlled of oil tank liquid level
System is realized by being equipped with high-order and low-level alarm in circuit loop, and design and use are more complex；And for alarm
The normally opened or normally off of point cannot be replaced arbitrarily.
Summary of the invention
1, it to solve the problems, such as
For 3 in the prior art, Floating Ball Liquid Level Control switch Liquid level point adjustment is difficult and alarm point form can not
The problem of change, the utility model provide the fuel tank that 3 fluid level control devices are had in a kind of oil pumping system.This is practical
Novel fluid level control device by replacing 3 Floating Ball Liquid Level Control switches with visual liquid level alarm, and passes through three
The combination of a visual liquid level alarm realizes to highest point in fuel tank, the liquid level electrical control of minimum point and certain intermediate point, and can
It, can also be normal by converting the mounting means progress alarm point of visual liquid level alarm arbitrarily to adjust the position of Liquid level point
It opens or the replacement of normally off, design is rationally, more convenient to use.
2, technical solution
To solve the above problems, the utility model adopts the following technical scheme.
The fuel tank of 3 fluid level control devices, including cabinet and visual liquid level warning are had in a kind of oil pumping system
Device, the visual liquid level alarm include the first visual liquid level alarm, the second visual liquid level alarm and the visual liquid of third
Level alarm, the visual liquid level alarm of described first, the described second visual liquid level alarm and the visual liquid of the third
Level alarm is fixed at wall box, and the first visual liquid level alarm, the described second visual liquid level report
Alert device and the visual liquid level alarm of the third from top to bottom successively longitudinal arrangement on wall box.
Preferably, the first visual liquid level alarm, the described second visual liquid level alarm and the third
Visual position of the liquid level alarm on box height direction is longitudinally staggered, and the first visual liquid level alarm and described
The second visual liquid level alarm have overlapping, the visual liquid level alarm of described second and the visual liquid level alarm of the third
There is overlapping.
Preferably, the first visual liquid level alarm, the described second visual liquid level alarm and the third
Visual liquid level alarm includes ontology, float and electrical alarm head, and the float is arranged in ontology, and described is electrical
Alarm head is fixed at body end.
Preferably, the electrical alarm head of the described first visual liquid level alarm and the visual liquid level alarm of the third is distinguished
It is flushed with the highs and lows of the box house oil liquid.
Preferably, the ontology of the body tip of the described first visual liquid level alarm and the described second visual liquid level alarm
Top flushes, and the body tip of the second visual liquid level alarm and the ontology top of the visual liquid level alarm of the third are neat
It is flat.
Preferably, the visual liquid level alarm is bolted on wall box.
Preferably, the visual liquid level alarm lower end is connected to by pipeline with box house.
Preferably, the bolt is hollow bolt.
Preferably, the junction of the bolt and cabinet is provided with gasket.
3, beneficial effect
Compared with the prior art, the utility model has the following beneficial effects:
(1) in a kind of oil pumping system of the utility model have 3 fluid level control devices fuel tank, including cabinet and
Three visual liquid level alarms, three visual liquid level alarms are fixed at wall box, and use environment temperature is compared with fuel tank
It is internal low, guarantee that the service life is longer for visual liquid level alarm electric elements inside；And the first visual liquid level alarm, second
Visual liquid level alarm and the visual liquid level alarm of the third from top to bottom successively longitudinal arrangement on wall box, each liquid level
Alarm controls an alarm point, it is desirable to change wherein some alarm point position, need to only move one visual liquid level warning of disassembly
Device can be realized, and the design feature based on visual liquid level alarm, if it is desired to change the form of alarm point, it can directly more
The electrical alarm head renewed, or only need for electrical alarm head to be mounted on the visual liquid level alarm overturning of ontology lower end originally
180 °, so that electrical alarm head is located at ontology upper end, it is easy to operate, it is flexible and convenient to use, and visual liquid level alarm collection
At liquidometer with, without adding liquid-level monitoring device, save the cost；
(2) the first of the utility model the visual liquid level alarm, the second visual liquid level alarm and the visual liquid level report of third
Position of the alert device on box height direction is longitudinally staggered, and the first visual liquid level alarm and the second visual liquid level alarm have
Overlapping, the second visual liquid level alarm and the visual liquid level alarm of third have overlapping, and visual liquid level alarm must longitudinal arrangement
In fuel tank sidewall, and the first visual liquid level alarm, the second visual liquid level alarm and the visual liquid level alarm of third are being pacified
When dress, there must be overlapping in visual liquid level, just can guarantee complete monitoring oil tank liquid level；
(3) the first of the utility model the visual liquid level alarm, the second visual liquid level alarm and the visual liquid level report of third
Alert device includes ontology, float and electrical alarm head, and float is arranged in ontology, and electrical alarm head is fixed at body end
Portion is cooperated by the magnetic element in the magnetic element and electrical alarm head in float, realizes being turned on and off for detection circuit,
It is structurally reasonable, it is easy to operate, and electrical alarm head is normalized, cost is relatively low；
(4) the electrical alarm head of the first of the utility model the visual liquid level alarm and the visual liquid level alarm of third is distinguished
Flushed with the highs and lows of box house oil liquid, can promptly and accurately detection oil liquid highs and lows, and
Warning is sounded an alarm to staff, and guarantee will not excessively be overflowed because of fuel tank inner fluid or very few be damaged to oil pump；
(5) ontology of the body tip of the first of the utility model the visual liquid level alarm and the second visual liquid level alarm
Top flushes, and the body tip of the second visual liquid level alarm is flushed with the ontology top of the visual liquid level alarm of third, is filling
Monitoring is completely completed while dividing using space, has saved cost；
(6) the visual liquid level alarm of the utility model is bolted on wall box, easy disassembly；
(7) the visual liquid level alarm lower end of the utility model is connected to by pipeline with box house, makes full use of U-tube
Principle avoids and fluid level control device is mounted on fuel tank internal is monitored the drawbacks of causing, and connects simple, facilitates behaviour
Make；
(8) bolt of the utility model is hollow bolt, after guaranteeing that oil liquid is flowed out by pipeline from cabinet, be can smoothly enter into
In vivo；
(9) when aperture on cabinet carries out the fixation of bolt, in order to avoid fuel tank leakage, the bolt and case of the utility model
The junction of body is provided with gasket.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the visual liquid level alarm of the utility model；
Fig. 3 is the structural schematic diagram of 3 floating-ball level switch in the prior art.
In figure: 1, the first visual liquid level alarm；2, the second visual liquid level alarm；3, the visual liquid level alarm of third；
4, cabinet；5, ontology；6, float；7, electrical alarm head；8,3 floating-ball level switch；9, oil tank flange；10, visual liquid level
Meter.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
As depicted in figs. 1 and 2, the fuel tank of 3 fluid level control devices, including cabinet 4 are had in a kind of oil pumping system
With visual liquid level alarm, visual liquid level alarm includes the first visual liquid level alarm 1, the second visual 2 and of liquid level alarm
The visual liquid level alarm 3 of third, the first visual liquid level alarm 1, the second visual liquid level alarm 2 and the visual liquid level warning of third
Device 3 is fixed at 4 side wall of cabinet, and the first visual liquid level alarm 1, the second visual liquid level alarm 2 and third are visual
The from top to bottom successively longitudinal arrangement on 4 side wall of cabinet of liquid level alarm 3.
3 floating-ball level switch 8 used on cabinet in the prior art 4 in conjunction with Fig. 3, this liquid level detection device peace
Inside cabinet 4, specifically, oil tank flange 9 is welded on top of oil-tank, 3 floating-ball level switch 8 are protruded into from top of oil-tank
Fuel tank internal, then linked together by 38 upper flanges of floating-ball level switch with oil tank flange 9, it carries out Floating Ball Liquid Level and opens
The fixation of pass；3 floating-ball level switch 8 have tri- electrical alarm points of 1A, 2A and 3A, respectively correspond fuel tank oil liquid highest point,
Certain intermediate point and minimum point, when liquid level reaches respective point in fuel tank, the floating ball of respective point will float, and drive the magnetism of respective point
Switch will issue electric signal, each point liquid-level switch manufacturer can be set as needed into normally opened or normally-closed contact
One kind, in order to observe oil tank liquid level, need to also fuel tank sidewall install a visual liquidometer 10, to observe liquid level shape in fuel tank
Condition liquid level detection device.This liquid level detection device of the prior art is because be that factory customizes the good and fixed form on fuel tank
The problem of causing the adjustment for level sensing point relatively difficult, and can not being changed for alarm point property, and the present embodiment
The above problem is then improved well, specific as follows:
It can by the first visual liquid level alarm 1, the second visual liquid level alarm 2 and third by 3 floating-ball level switch 8
Combination depending on liquid level alarm 3 replaces, and visual liquid level alarm is normalized at present, and visual liquid level alarm is integrated with liquid
Position meter is with, without adding liquid-level monitoring device, save the cost；The fixation of the visual liquid level alarm of three of the present embodiment is set
The environment temperature set in 4 side wall of cabinet, use is low in fuel tank internal compared with being arranged, and guarantees visual liquid level alarm internal electric member
The service life is longer for part；Most importantly, three visual liquid level alarms control an alarm point respectively, by mobile or
The adjustment of an alarm point position can easily be carried out by dismantling visual liquid level alarm；And the knot based on visual liquid level alarm
Structure feature becomes normally opened by normally closed if necessary to change the form of alarm point according to operating condition, and the present embodiment directly can more renew
Visual liquid level alarm, or the visual liquid level alarm that electrical alarm head 7 was mounted on to 5 lower end of ontology originally is only needed to turn over
Turn 180 °, so that electrical alarm head 7 is located at 5 upper end of ontology, it is easy to operate, it is flexible and convenient to use.
Embodiment 2
As shown in Figure 1, the fuel tank of 3 fluid level control devices is had in a kind of oil pumping system of the present embodiment, including
Cabinet 4, the first visual liquid level alarm 1, the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third, the first visual liquid
Level alarm 1, the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third are fixed at 4 side wall of cabinet, and three
Visual liquid level alarm lower end passes through to be connected to inside pipeline and cabinet 4, is made full use of U-tube principle, is avoided liquid level control
Device processed is mounted on fuel tank internal and is monitored the drawbacks of causing, and connects simply, facilitates operation；First visual liquid level alarm
1, the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third are from top to bottom arranged successively in 4 short transverse of cabinet,
Position of three visual liquid level alarms on 4 side wall of cabinet is longitudinally staggered, and the first visual liquid level alarm 1 and second is visual
Liquid level alarm 2 has overlapping, and the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third have overlapping, i.e., the second visual liquid
5 top of ontology of level alarm 2 is at or above 5 end of ontology of the first visual liquid level alarm 1, the visual liquid level report of third
5 top of ontology of alert device 3 is at or above 5 end of ontology of the second visual liquid level alarm 2, ensure that the first visual liquid level
Alarm 1, the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third it is longitudinally fixed after, cover entire oil level, protect
Each point of card oil liquid liquid level can be monitored by three visual liquid level alarms.
Embodiment 3
The fuel tank of 3 fluid level control devices, structure and embodiment are had in a kind of oil pumping system of the present embodiment
2 is essentially identical, the visual liquid level alarm 1 of the first of the present embodiment, the second visual liquid level alarm 2 and the visual liquid level warning of third
Device is also staggered on 3 horizontal position, as shown in Figure 1, the second visual liquid level alarm 2 is arranged in the first visual 1 He of liquid level alarm
Visual 3 left side of liquid level alarm of third, and 5 end of ontology of the first visual liquid level alarm 1 and the second visual liquid level alarm 2
5 top of ontology flush, the ontology 5 of 5 end of ontology of the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third pushes up
End flushes, and while guaranteeing complete completion detection work, makes full use of space and saves the cost of manufacture of visual liquid level alarm.
Embodiment 4
As shown in Figure 1, the fuel tank of 3 fluid level control devices is had in a kind of oil pumping system of the present embodiment, including
Cabinet 4, the first visual liquid level alarm 1, the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third, the first visual liquid
Level alarm 1, the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third are fixed at 4 side wall of cabinet, and
One visual liquid level alarm 1, the second visual liquid level alarm 2 and the visual liquid level alarm 3 of third in 4 short transverse of cabinet by
It is arranged successively under.Specifically, the first visual liquid level alarm 1, the second visual liquid level alarm 2 and third of the present embodiment
Visual liquid level alarm 3 includes ontology 5, float 6 and electrically alarm head 7, float 6 are arranged in ontology 5, as shown in Fig. 2,
The electrical alarm head 7 of the present embodiment is fixed at 5 lower end of ontology by screw, the state of each alarm point be it is normally closed, when
When filling lubricating oil to cabinet 4, float 6 takes 5 inner upper end of ontology to by oil liquid, at this time the second visual liquid level alarm 2 and third
The magnetic element in magnetic element and electrical alarm head 7 in the float 6 of visual liquid level alarm 3 does not contact, and oil liquid is attached to most
When high point, the float 6 in the first visual liquid level alarm 1 is not contacted with electrical alarm head 7, stops refueling at this time；In lubricating oil
During use, certain point liquid level among oil liquid is detected by the second visual liquid level alarm 2, if reaching intermediate point
Liquid level, the float 6 in the second visual liquid level alarm 2 contacts with electrical alarm head 7, connects circuit, start warning device, lead to
Cross the monitoring to certain point liquid level among oil liquid, on the one hand can remind staff can into cabinet 4 make-up oil, it is another
Aspect is also possible to prevent oil liquid and is further reduced under heater, causes heater oil starvation and is burned；It is visual by third
Liquid level alarm 3 detects oil liquid minimum point, with the second visual liquid level alarm 2, if the liquid level to touch the bottom, the
Float 6 in three visual liquid level alarms 3 is contacted with electrical alarm head 7, connects circuit, starts warning device, oil liquid is tight at this time
Weight is insufficient, reminds staff that must guarantee the normal work of this system by make-up oil into cabinet 4；Visual liquid level warning
Device it is structurally reasonable, easy to operate, and electrical alarm head 7 is normalized, cost is relatively low.
Embodiment 5
The fuel tank of 3 fluid level control devices, structure and embodiment are had in a kind of oil pumping system of the present embodiment
4 is essentially identical, the difference is that the electrical alarm head 7 of the present embodiment is fixed at 5 upper end of ontology by screw, it is each
The state of alarm point be it is normally opened, when to 4 built-in lubricating oil of cabinet, float 6 takes 5 inner upper end of ontology to by oil liquid, at this time the
The magnetic in magnetic element and electrical alarm head 7 in the float 6 of two visual liquid level alarms 2 and the visual liquid level alarm 3 of third
Property element contact, when oil liquid is attached to highest point, the float 6 in the first visual liquid level alarm 1 is contacted with electrical alarm head 7, this
When stop refuel；During lubricating oil use, certain point liquid level among oil liquid is carried out by the second visual liquid level alarm 2
Detection, if reaching the liquid level of intermediate point, the float 6 in the second visual liquid level alarm 2 is contacted with the disconnection of electrical alarm head 7,
Circuit disconnects, and starts warning device, by the monitoring to certain point liquid level among oil liquid, on the one hand can remind staff can be with
On the other hand the make-up oil into cabinet 4 is also possible to prevent oil liquid and is further reduced under heater, heater is caused to lack
Oil and be burned；Oil liquid minimum point is detected by third visual liquid level alarm 3, same second visual liquid level alarm 2,
If the liquid level to touch the bottom, the float 6 in the visual liquid level alarm 3 of third is contacted with the disconnection of electrical alarm head 7, and circuit is disconnected
It opens, starts warning device, at this time oil liquid wretched insufficiency, remind staff that must guarantee this by make-up oil into cabinet 4
The normal work of system.
Embodiment 6
As shown in Figure 1, the fuel tank of 3 fluid level control devices is had in a kind of oil pumping system of the present embodiment, knot
Structure is substantially the same manner as Example 4, for the highs and lows of detection oil liquid promptly and accurately, and issues and warns to staff
Alarm shows, guarantee will not excessively be overflowed because of fuel tank inner fluid or it is very few oil pump is damaged, the first of the present embodiment can
Depending on the electrical alarm head 7 of liquid level alarm 1 and the visual liquid level alarm 3 of third respectively with the highest point of 4 internal oil of cabinet and
Minimum point flushes.
Embodiment 7
As depicted in figs. 1 and 2, the oil of 3 fluid level control devices is had in a kind of oil pumping system of the present embodiment
Case, structure is substantially the same manner as Example 1, and further, the visual liquid level alarm of the present embodiment is bolted on
4 side wall of cabinet when installation, needs to open up the hole of two Φ 11 on 4 side wall of cabinet, then bolt is connected progress with hole matching
The fixation of body 5, when needing to adjust the position of alarm point, it is only necessary to block up in the hole for installing visual liquid level alarm originally with plug
Firmly, then aside empty installation is bored at selected position again, design is convenient in this way dismantles visual liquid level alarm
And installation, it is easy to operate, when aperture on cabinet 4 carries out the fixation of bolt, in order to avoid fuel tank leakage, the bolt of the present embodiment
It is provided with gasket with the junction of cabinet 4, gasket uses fluorine silica gel sealing ring；And bolt is hollow bolt, guarantees oil
Liquid from cabinet 4 by pipeline flow out after, can smoothly enter into ontology 5.
Claims (9)
1. having the fuel tank of 3 fluid level control devices, including cabinet (4) and visual liquid level warning in a kind of oil pumping system
Device, it is characterised in that: the visual liquid level alarm includes the first visual liquid level alarm (1), the second visual liquid level warning
Device (2) and the visual liquid level alarm of third (3), the visual liquid level alarm of described first (1), the described second visual liquid level report
Alert device (2) and the visual liquid level alarm of the third (3) are fixed at cabinet (4) side wall, and described first is visual
Liquid level alarm (1), the described second visual liquid level alarm (2) and the visual liquid level alarm of the third (3) are in cabinet
(4) from top to bottom successively longitudinal arrangement on side wall.
2. having the fuel tank of 3 fluid level control devices, feature in a kind of oil pumping system according to claim 1
Be: the visual liquid level alarm of described first (1), the described second visual liquid level alarm (2) and the third are visual
Position of the liquid level alarm (3) in cabinet (4) short transverse is longitudinally staggered, and the first visual liquid level alarm (1)
There is overlapping with the second visual liquid level alarm (2), the visual liquid level alarm of described second (2) and the third can
There is overlapping depending on liquid level alarm (3).
3. the fuel tank of 3 fluid level control devices is had in a kind of oil pumping system according to claim 1 or 2, it is special
Sign is: the visual liquid level alarm of described first (1), the described second visual liquid level alarm (2) and the third can
It include ontology (5), float (6) and electrical alarm head (7) depending on liquid level alarm (3), the float (6) is arranged in ontology
(5) in, the electrical alarm head (7) is fixed at ontology (5) end.
4. having the fuel tank of 3 fluid level control devices, feature in a kind of oil pumping system according to claim 3
Be: the electrical alarm head (7) of the first visual liquid level alarm (1) and the visual liquid level alarm of the third (3) is respectively
It is flushed with the highs and lows of described cabinet (4) internal oil.
5. having the fuel tank of 3 fluid level control devices, feature in a kind of oil pumping system according to claim 3
It is: ontology (5) end of the first visual liquid level alarm (1) and the ontology of the described second visual liquid level alarm (2)
(5) top flushes, ontology (5) end of the second visual liquid level alarm (2) and the visual liquid level alarm of the third (3)
Ontology (5) top flush.
6. having the fuel tank of 3 fluid level control devices, feature in a kind of oil pumping system according to claim 1
Be: the visual liquid level alarm is bolted on cabinet (4) side wall.
7. the fuel tank of 3 fluid level control devices is had in a kind of oil pumping system according to claim 1 or 6, it is special
Sign is: the visual liquid level alarm lower end inside pipeline and cabinet (4) by being connected to.
8. having the fuel tank of 3 fluid level control devices, feature in a kind of oil pumping system according to claim 6
Be: the bolt is hollow bolt.
9. having the fuel tank of 3 fluid level control devices, feature in a kind of oil pumping system according to claim 6
Be: the junction of the bolt and cabinet (4) is provided with gasket.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820956134.4U CN208311921U (en) | 2018-06-21 | 2018-06-21 | The fuel tank of 3 fluid level control devices is had in a kind of oil pumping system |
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| CN201820956134.4U CN208311921U (en) | 2018-06-21 | 2018-06-21 | The fuel tank of 3 fluid level control devices is had in a kind of oil pumping system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925787A (en) * | 2019-12-17 | 2020-03-27 | 武汉理工大学 | Balance oil control device for fuel oil tank of boiler |
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2018
- 2018-06-21 CN CN201820956134.4U patent/CN208311921U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925787A (en) * | 2019-12-17 | 2020-03-27 | 武汉理工大学 | Balance oil control device for fuel oil tank of boiler |
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