CN209745372U - Low-temperature-resistant liquid level meter for oil transporting and filling truck - Google Patents

Abstract

The utility model relates to a low temperature resistant liquid level meter for a transport and refueling truck, which comprises a measuring rod vertically arranged, a waveguide wire arranged in the measuring rod, a floater sleeved on the measuring rod and an electronic bin arranged at the top end of the measuring rod, wherein a magnetic ring is arranged in the floater, and the magnetic ring is connected with the electronic bin through a waveguide wire; a protective cylinder is sleeved outside the measuring rod, and a gap is formed between the inner wall of the protective cylinder and the floater; the protection barrel is detachably connected with the bottom of the electronic bin at one end close to the electronic bin, the vent hole is formed in one end, close to the electronic bin, of the protection barrel, and the bottom of the protection barrel is suspended. The utility model discloses have the effect that improves the detection precision.

Description

Low-temperature-resistant liquid level meter for oil transporting and filling truck

Technical Field

The utility model belongs to the technical field of level sensor's technique and specifically relates to a fortune is low temperature resistant level gauge for refueling vehicle.

Background

At present, in order to detect the amount of oil in a vehicle tank, a sensor arranged in the tank is generally used for measurement. Different sensors may be employed for different accuracy requirements. For example, in a conventional oil amount detection, a capacitance level sensor is generally used to detect the amount of oil in a tank. In prior art, capacitive sensor includes a response part, and the liquid level of the oil in the oil tank is different, and its submerged response part's length is different, leads to this response part's capacitance value different, according to the capacitance value of difference, just can correspond different liquid level values (the liquid level height in the oil tank) with its conversion to can obtain the comparatively accurate numerical value of oil mass. The induction part in the prior art comprises an outer shell and an inner core which is arranged at the axis position of the outer shell and is not in contact with the outer shell, and the capacitance value is obtained by respectively using the outer shell and the inner core as two electrodes of a capacitor. In the prior art, the inner core and the outer shell are connected to the measuring terminal of the measuring section as two poles of a capacitor through a lead wire.

The above prior art solutions have the following drawbacks: due to the environment in which the vehicle is operating, vibrations and jolts are inevitable for the sensor, and in everyday use, it is found that the wires are prone to problems, in particular the wires connecting the housings; meanwhile, the whole inner core in the prior art is continuous, and the structure makes the alignment of the inner core difficult to maintain and high in cost, so that the detection precision is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an improve the low temperature resistant level gauge for fortune fuel tanker that detects the precision.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

A low-temperature resistant liquid level meter for a tanker comprises a measuring rod vertically arranged, a waveguide wire arranged in the measuring rod, a floater sleeved on the measuring rod and an electronic bin arranged at the top end of the measuring rod, wherein a magnetic ring is arranged in the floater and is connected with the electronic bin through a waveguide wire; a protective cylinder is sleeved outside the measuring rod, and a gap is formed between the inner wall of the protective cylinder and the floater; the protection barrel is detachably connected with the bottom of the electronic bin at one end close to the electronic bin, the vent hole is formed in one end, close to the electronic bin, of the protection barrel, and the bottom of the protection barrel is suspended.

By adopting the technical scheme, when the sensor works, the electronic circuit in the electronic bin generates an initial pulse which is transmitted at a constant speed along the waveguide wire, and simultaneously generates a rotating magnetic field advancing along the waveguide wire with the pulse. The twisting is sensed and converted into corresponding 'termination pulses' by a signal processing mechanism arranged in the electronic bin, and the position quantity can be accurately measured by calculating the time difference between the 'starting pulses' and the corresponding 'termination pulses'; along with the change of the oil quantity, the floater floats up and down along the measuring rod along with the change of the oil quantity, so that the time difference between the initial pulse and the corresponding termination pulse is changed, and the detection of the oil quantity is realized; the protection cylinder can reduce the change of an oil layer caused by jolt of vehicle operation, so that the detection precision is improved.

The utility model discloses further set up to: the bottom of the electronic bin is fixedly provided with an upper flange, and the top end of the measuring rod penetrates through the upper flange and is fixedly connected with the upper flange.

Through adopting above-mentioned technical scheme, through last flange with the measuring staff rigid coupling, can reduce rocking of measuring staff itself to improve and detect the precision.

The utility model discloses further set up to: the top end of the protection cylinder is detachably connected with the upper flange.

The utility model discloses further set up to: the upper flange is provided with a threaded hole, and the top end of the protection barrel is in threaded connection with the upper flange through the threaded hole.

Through adopting above-mentioned technical scheme, conveniently carry out the dismouting to a protection section of thick bamboo.

The utility model discloses further set up to: and a tight locking ring is arranged at one end of the measuring rod, which is far away from the electronic bin.

Through adopting above-mentioned technical scheme, tight lock ring can avoid the float to deviate from the measuring staff bottom in the use.

The utility model discloses further set up to: the measuring rod is provided with a convex block at one end close to the tight locking ring, a limit groove which is spliced with the convex block is arranged on the inner wall of one end, close to the upper flange, of the protection cylinder along the axial direction of the protection cylinder, and a rotary groove is arranged at one end, far away from the upper flange, of the limit groove along the circumferential direction of the protection cylinder.

By adopting the technical scheme, when the protection barrel is installed, the lug slides along the limiting groove, when one end of the protection barrel, which is close to the upper flange, is inserted into the threaded hole of the upper flange, the protection barrel is screwed, and meanwhile, the lug slides along the screwing groove, so that the protection barrel is fixedly connected with the measuring rod, and the shaking of the measuring rod in the use process is further reduced.

The utility model discloses further set up to: one side of the electronic bin is provided with a threaded connector connected with an external cable, and a gasket is sleeved on the threaded connector.

Through adopting above-mentioned technical scheme, when the outside cable was screwed to the electron storehouse along threaded connection head, the gasket can increase the frictional force in electron storehouse and outside cable to it is more stable to make the connection.

The utility model discloses further set up to: the electronic bin is an explosion-proof electronic bin.

To sum up, the utility model discloses a beneficial technological effect does:

1. By arranging the protection cylinder, the fluctuation of an oil layer can be reduced, and the detection precision is improved;

2. The improvement sets up the spacing groove and revolves the groove, can make a protection section of thick bamboo be connected with the measuring staff, reduces rocking that the measuring staff takes place in the use, improves and detects the precision.

3. Through setting up the float, can make the detected signal change along with the change of oil reservoir all the time to avoid making the less not enough problem of detection precision that leads to of oil reservoir change because of ambient temperature is low excessively, improve and detect the precision.

drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural sectional view of the present invention.

Fig. 3 is a schematic view of a partial structure of the present invention.

Fig. 4 is an enlarged view of a portion of the structure of fig. 3.

In the figure, 1, a measuring rod; 11. tightly locking the ring; 12. a bump; 2. an electronic bin; 21. a threaded connector; 3. a float; 4. a protective cylinder; 41. a limiting groove; 42. rotating the groove; 43. a vent hole; 5. an upper flange; 51. a threaded bore.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, in order to disclose the utility model, a low temperature resistant liquid level meter for a transporting and refueling truck comprises a measuring rod 1 vertically arranged in an oil tank, a floater 3 sleeved on the measuring rod 1 and an electronic bin 2 fixedly connected with the top end of the measuring rod 1, wherein one side of the electronic bin 2 is provided with a threaded connector 21 connected with an external cable, and the threaded connector 21 is sleeved with a gasket; an upper flange 5 is fixedly arranged at the bottom of the electronic bin 2, and the top end of the measuring rod 1 is fixedly connected with the bottom of the upper flange 5; the measuring rod 1 is internally provided with a waveguide wire which penetrates through the measuring rod 1, the floater 3 is internally provided with a magnetic ring, and two ends of the waveguide wire are respectively connected with the electronic bin 2 and the floater 3. In order to avoid the separation of the floater 3 from the measuring rod 1, a tight locking ring 1 is clamped at one end of the measuring rod 1 far away from the electronic bin 2, and the shell of the electronic bin 2 is an explosion-proof shell made of 0Cr18Ni 9.

When the sensor works, an electronic circuit in the electronic bin 2 generates a 'starting pulse', the 'starting pulse' is transmitted at a constant speed along the waveguide wire, a rotating magnetic field advancing along the waveguide wire along with the pulse is generated, and when the magnetic field meets a permanent magnetic field generated by a magnetic ring in the floater 3, the two magnetic fields are superposed to generate a magnetostrictive effect, so that the waveguide wire is twisted. The twisting is sensed and converted into corresponding 'end pulse' by a signal processing mechanism arranged in the electronic bin 2, and the position quantity can be accurately measured by calculating the time difference between the 'start pulse' and the corresponding 'end pulse'; along with the change of the oil quantity, the floater 3 can float up and down along the measuring rod 1 along with the change of the oil quantity, so that the time difference between the initial pulse and the corresponding ending pulse is changed, and the oil quantity is detected.

When the vehicle runs, the oil layer in the oil tank fluctuates, so that the floater 3 frequently floats up and down, and the detection precision is reduced; in order to improve the detection precision, referring to fig. 1 and 2, a protection cylinder 4 is sleeved outside a measuring rod 1, and a gap exists between the inner wall of the protection cylinder 4 and a floater 3; the bottom of the upper flange 5 is provided with a threaded hole, one end of the protection cylinder 4, which is close to the electronic bin 2, is in threaded connection with the upper flange 5 through the threaded hole, and one end of the protection cylinder 4, which is far away from the electronic bin 2, is suspended in the air; the wall of the protection barrel 4 close to one end of the electronic bin 2 is also provided with a plurality of vent holes 43.

Install back in the oil tank with the sensor, because the bottom of a protection section of thick bamboo 4 is unsettled setting, when the oil reservoir in the oil tank is undulant along with the vehicle operation takes place, a protection section of thick bamboo 4 can keep apart the oil mass in a protection section of thick bamboo 4 and the outer oil phase of a protection section of thick bamboo 4 to reduce the change of 4 oil reservoirs in the protection section of thick bamboo, thereby improve and detect the precision.

Further, in order to reduce the shaking of the measuring rod 1 in the using process, referring to fig. 3 and 4, a bump 12 is arranged at one end of the measuring rod 1 close to the locking ring 11, a limit groove 41 which is inserted into the bump 12 is arranged on the inner wall of one end of the protection cylinder 4 close to the upper flange 5 along the axial direction of the protection cylinder 4, and a spiral groove 42 is arranged at one end of the limit groove 41 far away from the upper flange 5 along the circumferential direction of the protection cylinder 4; when the protection barrel 4 is installed, the lug 12 slides along the limiting groove 41, when one end, close to the upper flange 5, of the protection barrel 4 is inserted into the threaded hole of the upper flange 5, the protection barrel 4 is screwed, and meanwhile, the lug 12 slides along the rotary groove 42, so that the protection barrel 4 is clamped with the measuring rod 1, and the shaking of the measuring rod 1 in the using process is further reduced.

The utility model can reduce the fluctuation of the oil layer and improve the detection precision by arranging the protection cylinder 4; the limit groove 41 and the spiral groove 42 are arranged in an improved manner, so that the protection cylinder 4 can be connected with the measuring rod 1, the shaking of the measuring rod 1 in the using process is reduced, and the detection precision is improved; through setting up float 3, can make the detected signal change along with the change of oil reservoir all the time to avoid making the less not enough problem of detection precision that leads to of oil reservoir change because of ambient temperature is low excessively, improve and detect the precision.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a fortune is low temperature resistant level gauge for tanker aircraft which characterized in that: the device comprises a measuring rod (1) which is vertically arranged, a waveguide wire which is arranged in the measuring rod (1), a floater (3) which is sleeved on the measuring rod (1) and an electronic bin (2) which is arranged at the top end of the measuring rod (1), wherein a magnetic ring is arranged in the floater (3) and is connected with the electronic bin (2) through a waveguide wire; a protective cylinder (4) is sleeved outside the measuring rod (1), and a gap is formed between the inner wall of the protective cylinder (4) and the floater (3); the electronic warehouse is characterized in that one end, close to the electronic warehouse (2), of the protection barrel (4) is detachably connected with the bottom of the electronic warehouse (2), an air vent (43) is formed in one end, close to the electronic warehouse (2), of the protection barrel (4), and the bottom of the protection barrel (4) is suspended.

2. The low temperature resistant liquid level gauge for the tanker carrier of claim 1, wherein: the bottom of the electronic bin (2) is fixedly provided with an upper flange (5), and the top end of the measuring rod (1) penetrates through the upper flange (5) and is fixedly connected with the upper flange (5).

3. the low temperature resistant liquid level gauge for the oil and gas tanker according to claim 2, wherein: the top end of the protection cylinder (4) is detachably connected with the upper flange (5).

4. The low temperature resistant liquid level gauge for the tanker carrier of claim 3, wherein: the upper flange (5) is provided with a threaded hole, and the top end of the protection barrel (4) is in threaded connection with the upper flange (5) through the threaded hole.

5. The low temperature resistant liquid level gauge for the oil and gas tanker according to claim 4, wherein: and a tight locking ring (11) is arranged at one end of the measuring rod (1) far away from the electronic bin (2).

6. The low temperature resistant liquid level gauge for the tanker carrier of claim 5, wherein: the measuring rod is characterized in that a protruding block (12) is arranged at one end, close to the tight locking ring (11), of the measuring rod (1), a limiting groove (41) which is connected with the protruding block (12) in an inserting mode is formed in the inner wall, close to one end of the upper flange (5), of the protection barrel (4) along the axial direction of the protection barrel (4), and a rotary groove (42) is formed in the circumferential direction, far away from the upper flange (5), of one end of the limiting groove (41).

7. the low temperature resistant liquid level gauge for the tanker carrier of claim 1, wherein: one side of electron storehouse (2) is equipped with threaded connection head (21) that are connected with outside cable, the cover is equipped with the gasket on threaded connection head (21).

8. The low temperature resistant liquid level gauge for the tanker carrier of claim 1, wherein: the electronic bin (2) is arranged to be an explosion-proof electronic bin (2).