CN113390486A - Device for testing oil level of multiple fuel tanks of automatic drilling machine - Google Patents
Device for testing oil level of multiple fuel tanks of automatic drilling machine Download PDFInfo
- Publication number
- CN113390486A CN113390486A CN202110649991.6A CN202110649991A CN113390486A CN 113390486 A CN113390486 A CN 113390486A CN 202110649991 A CN202110649991 A CN 202110649991A CN 113390486 A CN113390486 A CN 113390486A
- Authority
- CN
- China
- Prior art keywords
- rod
- oil
- oil tank
- sealing
- fuel tank
- Prior art date
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
Abstract
The invention relates to the technical field of oil level testing equipment, in particular to a device for testing oil levels of multiple fuel tanks of an automatic drilling machine, which comprises a first oil tank and a second oil tank, wherein the first oil tank and the second oil tank are communicated through a communicating pipe; the first oil tank and the second oil tank are respectively provided with a sealing structure for controlling the sealing of the oil tank, the first oil tank and the second oil tank are respectively provided with an exhaust structure for exhausting air, and the sealing structures can drive the exhaust structures; be equipped with the drive structure that is used for the drive to add the oil drum and removes on the protective structure, the liquid level test effect is good, and it is stable to use, and fluid adds stable convenient, and operating efficiency is high, and resistance to compression pressure release is effectual.
Description
Technical Field
The invention relates to the technical field of oil level testing equipment, in particular to a device for testing oil levels of multiple fuel tanks of an automatic drilling machine.
Background
The automatic drilling machine product is widely applied to various mechanical projects such as engineering construction, mine exploitation, hydroelectric engineering, tunnel construction, railway anchoring and the like, has wide application range, large quantity and large working strength of a working surface of the automatic drilling machine, requires a machine set to meet continuous operation working time for at least 8-10 hours, basically has the power of an engine matched with the current automatic drilling machine set of more than 300-400 kW, can meet the use requirement of a user only by calculating the oil consumption of the engine according to the design capacity of a fuel tank of more than 700-1000 cubic meters, requires the volume of the fuel tank to be larger when the fuel tank is actually used on site by the user so as to facilitate the production and the actual use condition, has small use environment space potential along with the expansion of the application field of the automatic drilling machine, particularly underground drilling machines, requires that the overall dimension of the machine set cannot be too large so as to meet the actual use space range of the working surface, and the overall weight distribution is balanced and the appearance is streamlined, so that higher and higher requirements are provided for the overall layout of the unit, but the fuel tank capacity is expected to be larger. Therefore, when the overall layout of the unit considers the design of the fuel tank, two or more fuel tanks with different sizes and shapes or even special shapes can be considered, and the design scheme of communicating in the form of communicating pipes is adopted to meet the design requirement of a larger fuel tank at a relatively smaller space.
However, the unit electrical system needs to display the real-time oil quantity position of the fuel tank, and the high and low oil quantity positions have alarm signal output functions, so as to meet the intelligent control requirements of the unit electrical system, the original conventional oil quantity control of a single fuel tank is realized by a conventional resistance-type sensor, a linear sliding rheostat is used, the resistance value is controlled by a floater, the resistance value can change along with the change of the oil quantity, the controller tests the fuel oil level according to the resistance value tested by the sensor to realize the functions of display, alarm and the like, the mode is only suitable for measuring the oil quantity of one fuel tank with a basically square appearance, and is not suitable for the condition that two or more even special-shaped fuel tanks are communicated with the stored oil, so the requirements of electrical intelligent control cannot be realized, and the fuel tanks are mostly and directly fixed on equipment without pressure relief and protection functions, when meetting the foreign matter striking and cause the oil tank to damage easily, and the top of oil tank is most directly to set up the end cover, and the seal port of end cover is less, causes fluid to splash easily when directly adding fluid, and the exhaust hole that sets up in the oil tank simultaneously sets up alone, need manually open when adding fluid, and when fluid adds the completion timely take out and add the bucket not be convenient for, and the operation flexibility is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device for testing oil levels of multiple fuel tanks of an automatic drilling machine, which can realize remote control.
The technical scheme adopted by the invention for solving the technical problems is as follows: a device for testing oil level of multiple fuel tanks of an automatic drilling machine comprises a first oil tank and a second oil tank, wherein the first oil tank and the second oil tank are communicated through a communicating pipe, the bottom end of the second oil tank is connected with a testing structure, the first oil tank and the second oil tank are both accommodated and protected through a protection structure, and a pressure relief structure is arranged on the protection structure; the first oil tank and the second oil tank are respectively provided with a sealing structure for controlling the sealing of the oil tank, the first oil tank and the second oil tank are respectively provided with an exhaust structure for exhausting air, and the sealing structures can drive the exhaust structures; and the protective structure is provided with a driving structure for driving the oil filling barrel to move.
Specifically, the test structure comprises a pressure transmitter, an oil outlet at the bottom end of the second oil tank is connected to the pressure transmitter, a probe of the pressure transmitter effectively senses the pressure at the bottom of the second oil tank, the pressure is converted into a 4-20 mA signal through the ratio of the pressure to the atmospheric pressure of the highest liquid level surface, the signal is input to the control display instrument through a sensor output signal wire, and the control display instrument calculates and processes the 4-20 mA signal through a self-setting function in a mode of combining an intelligent control theory and the traditional PID control;
the pressure transmitter adopts a diffused silicon pressure sensor core body, and meets the requirements of high-sensitivity, high-precision and high-stability measurement of 5-20 kpa through a high-reliability amplifying circuit and a precise digital temperature compensation and nonlinear correction technology;
the control display instrument comprises a power supply input end, a sensor signal input end, J1, a J2 relay output end, a 485 communication interface, a master control output and a grounding electrode. The power supply input end is a power supply for controlling the display instrument, and the power supply can be DC24V or customized into other power supply grades; at the signal input end of the sensor, signals can be 4-20 mA, and signals such as a thermocouple, a thermal resistor, analog quantity and the like can also be input;
the output ends of the J1 and J2 relays can be externally connected with functions of high fuel quantity, low-level alarm signal output and the like;
the 485 communication interface uploads signals to a remote upper computer such as a computer or a PLC through a 485 communication line of the 485 communication interface, so that a remote control function is realized;
the main control output can be relay contact output or various analog quantity outputs;
the grounding electrode is connected with the ground when the instrument works in a place with strong interference or other equipment works cooperatively;
through a differential pressure transmitter which is arranged at the lowest position of the oil quantity of an oil tank, the pressure difference is converted into a 4-20 mA signal according to the atmospheric pressure ratio of the differential pressure transmitter to the highest liquid level surface, and the signal is input into an intelligent control instrument and then is subjected to programmable control program to realize the functions of displaying 0-100% of the fuel oil quantity, alarming output of high and low oil levels, 485 communication output and the like;
h is the liquid level difference of the highest and lowest positions of the fuel, the full fuel is the high position, the maximum value of the detection pressure kpa of the sensor is set, the maximum value corresponds to a 20mA signal output point, and the full fuel level is displayed by the instrument at the moment;
the fuel oil low point is set as the minimum value of the detection pressure kpa of the sensor and corresponds to a 4mA signal output point, and the low oil level is displayed by the instrument to be close to 0 percent at the moment;
similarly, any pressure value close to the high-position point can be set as a high-position alarm output value and is used for an oil level high alarm output signal of the fuel tank;
the pressure value close to any low point can be set as a low alarm output value for an oil level low alarm output signal of the fuel tank;
the output signals can be transmitted to a remote upper computer through a 485 communication line, so that the functions of remote signal display, remote signal output and the like are realized;
the fuel level display, alarm output and 485 communication output functions of the electrical control system to two or more even special-shaped fuel tanks are effectively realized, the measurement of high sensitivity, high precision and high stability is met, IP68 can be realized by the protection grade, temperature compensation of a full-temperature area is realized, good electrical performance and long-term stability are realized, a system is formed by itself, the independent control system is flexible and convenient to use, the liquid level height control, display, alarm and signal transmission functions of other media such as multiple fuel tanks and multiple water tanks are well solved, and the application range is wide.
Specifically, protective structure includes the protecting box, the inside of two protecting boxes is located respectively to first oil tank and second oil tank, the top of protecting box is equipped with the apron, be equipped with the lead screw that rotates the connection on the apron, lead screw thread drive plate slides on the apron, be equipped with the closing plate that is used for carrying out the seal to the tip of lead screw on the apron, the both ends of drive plate are equipped with the gyro wheel of rotating the connection, the gyro wheel rolls in the transmission groove that the slope set up on the fixture block, two the slip opposite direction of fixture block, the fixture block can with the protecting box block.
Specifically, pressure release structure includes the supporting shoe, the supporting shoe is fixed in the guard box, the dead lever vertical fixation is in the supporting shoe, the cross-section of dead lever is T shape, sliding connection between dead lever and the sliding sleeve, the bottom mounting of dead lever has the installation piece that is used for preventing the slippage, the inside of sliding sleeve is equipped with two first pressure release springs, two the one end of first pressure release spring all contradicts with the sliding sleeve, two the other one end of first pressure release spring is contradicted respectively in dead lever and installation piece, be fixed with the pressure release pole on the sliding sleeve, slide between the both ends of pressure release pole and the mount pad, be equipped with second pressure release spring between pressure release pole and the mount pad.
Specifically, seal structure includes the sealing plug, all be equipped with threaded connection's sealing plug on first oil tank and the second oil tank, the one end of sealing plug is equipped with threaded connection's end cover, the diameter of sealing plug towards the one end of end cover is less than the diameter of other one end, be equipped with sliding connection's sealing rod on the sealing plug, the sealing rod is T shape, be connected with first reset spring between sealing rod and the sealing plug, be equipped with the water conservancy diversion hole of Y shape on the sealing rod, all be equipped with the connecting rod on first oil tank and the second oil tank, be fixed with the nose bar on the connecting rod.
Specifically, exhaust structure includes the transfer line of U-shaped structure, all be equipped with the transfer line on first oil tank and the second oil tank, be equipped with the second reset spring that is used for reseing on the transfer line, the one end of transfer line is equipped with the fixed stopper that is used for sealed exhaust hole, the fixed stopper is the round platform shape, the other end of transfer line is equipped with the guide block of rotation connection, the sealing plug can with the guide block contact.
Specifically, the drive structure includes the pneumatic cylinder, the pneumatic cylinder is connected in the slider, sliding connection between slider and the protective housing, be equipped with the second slide bar on the slider, sliding connection has two bracing pieces on the second slide bar, be equipped with the spacing groove on the bracing piece, the width in spacing groove equals the diameter of the locating lever on the sealing plug.
Specifically, the sliding block is connected with a first sliding rod on the protective box in a sliding mode, and the first sliding rod is of a cylindrical structure.
The invention has the beneficial effects that:
(1) the device for testing the oil level of the multi-fuel tank of the automatic drilling machine is connected with a pressure transmitter through an oil outlet at the bottom end of a second fuel tank, a probe of the pressure transmitter effectively senses the pressure at the bottom of the second fuel tank, the pressure is converted into a 4-20 mA signal through the ratio of the pressure to the atmospheric pressure of the highest liquid level surface, the signal is input into a control display instrument through a sensor output signal wire, the control display instrument adopts a mode of combining an intelligent control theory and the traditional PID control, the 4-20 mA signal is calculated and processed through a self-setting function, the signal is uploaded to a computer or a remote upper computer such as a PLC through a 485 communication wire of a 485 communication port, a remote control function is realized, the fuel level display, alarm output and 485 communication output functions of two or more even special-shaped fuel tanks are effectively realized by an electric control system, and the requirements of high sensitivity, high speed, The high-precision and high-stability measurement device has the advantages that IP68 can be realized by the protection grade, full-temperature-zone temperature compensation is realized, good electrical performance and long-term stability are realized, a system is formed by itself, an independent control system is adopted, the use and matching are flexible and convenient, the liquid level height control, display, alarm and signal transmission functions of other media such as a plurality of oil tanks and a plurality of water tanks are well realized, and the application range is wide.
(2) In a further preferred scheme of the invention, the device for testing the oil level of the multiple fuel tanks of the automatic drilling machine with the protective structure is introduced, the first fuel tank and the second fuel tank are both accommodated and protected by the protective structure, and the protective structure is provided with a pressure relief structure; and then facilitate protecting the first oil tank and the second oil tank through the protective structure, carry on the pressure relief through the pressure relief structure at the same time, make the protective structure cooperate with the pressure relief structure to relieve the impact, prevent the said first oil tank and second oil tank from damaging effectively, greatly improve the security, install the said first oil tank or second oil tank in the inside of the protective housing at first, then install the said mount pad on the rig stander, when there is foreign matter to strike the said protective housing, the said protective housing protects the first oil tank or second oil tank inside, meanwhile through the dead lever to touch the first pressure relief spring, the pressure relief lever touches the second pressure relief spring to carry on the pressure relief, the impact to the protective housing of effective reduction, and then has greatly improved the stability of the first oil tank and second oil tank, while overhauing and maintaining the first oil tank and second oil tank, rotate the closing plate, make the lead screw expose, the setting of closing plate is convenient for protect the lead screw, rotates the lead screw, lead screw thread drive plate slides towards the bottom, makes the gyro wheel on the drive plate roll on the driving groove, and then drives two fixture block relative slip, makes fixture block and guard box separation, and then makes the installation of apron dismantle convenient and fast more, has improved efficiency and its quality to the maintenance of first oil tank and second oil tank greatly.
(3) According to the device for testing the oil level of the multi-fuel tank of the automatic drilling machine, the first fuel tank and the second fuel tank are respectively provided with the sealing structures for controlling the sealing of the fuel tanks, the first fuel tank and the second fuel tank are respectively provided with the exhaust structures for exhausting air, and the sealing structures can drive the exhaust structures; seal structure's setting makes the interpolation of fluid convenient and fast more, is convenient for simultaneously drive the automatic exhaust of exhaust structure, makes the interpolation of fluid high-efficient stable more, promptly: when oil needs to be added, the sealing plug is rotated to separate the sealing plug from the first oil tank, then the sealing plug is in threaded connection with an external oil barrel, when the sealing plug is not abutted to the guide block, the second return spring is contracted to drive the fixing plug to unseal the exhaust hole, so that automatic pressure balance is convenient to adjust, when the sealing plug is abutted to the guide block, the guide block and the transmission rod are rotated to reduce the friction force between the guide block and the sealing plug, so that the operation is more convenient, the guide block drives the transmission rod to seal the fixing plug to the exhaust hole, then the oil filling barrel faces the oil filling hole, when the sealing rod is not in contact with the convex rod, the first return spring is contracted to drive the sealing rod to abut against the sealing plug, so that the oil guiding hole is not communicated with the oil filling barrel, and when the sealing rod abuts against the convex rod, the sealing rod drives the first return spring to extend, make the guiding hole switch on, and then be convenient for quick interpolation fluid, effectively prevent spilling of fluid, improved the interpolation efficiency and the quality of fluid greatly.
(4) According to the device for testing the oil level of the multiple fuel tanks of the automatic drilling machine, the driving structure for driving the oiling barrel to move is arranged on the protection structure, so that the oiling barrel is conveniently and automatically driven to be separated through the driving structure, and oiling is more stable, namely: the liquid level sensor is arranged in the first oil tank, when the oiling barrel is used, the two support rods slide, the distance between the two support rods is equal to two, the support rods slide on the second slide rod, the sliding is more stable, then the two support rods slide, the position rods are clamped with the limiting grooves, the oiling barrel is prevented from deviating, when the liquid level sensor detects that the liquid level of oil is proper, the hydraulic cylinder extends to drive the sliding block to slide with the first slide rod, the sliding block drives the support rods, the support rods automatically drive the sealing plug and the oiling barrel to be separated from a mailbox, the sealing rod is not in contact with the convex rod, the first reset spring contracts to drive the sealing rod to be abutted against the sealing plug, and the diversion hole is not communicated with the oiling barrel.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram illustrating the overall structure of a preferred embodiment of an apparatus for testing oil levels of multiple fuel tanks of an automatic drilling machine according to the present invention;
fig. 2 is a schematic view of a connection structure of the first oil tank and the communication pipe shown in fig. 1;
FIG. 3 is an enlarged view of the part A shown in FIG. 2;
FIG. 4 is an enlarged view of the structure of the portion B shown in FIG. 2;
FIG. 5 is a schematic view of the connection structure between the first fuel tank and the protection structure shown in FIG. 2
FIG. 6 is an enlarged view of the structure of the portion C shown in FIG. 5;
FIG. 7 is a schematic structural view of the venting structure shown in FIG. 6;
FIG. 8 is an enlarged view of the structure of the portion D shown in FIG. 5;
FIG. 9 is an enlarged view of the structure of the section E shown in FIG. 5;
FIG. 10 is a schematic diagram of the pressure relief structure shown in FIG. 8;
fig. 11 is a schematic diagram of the working principle of the device for testing the oil level of the multiple fuel tanks of the automatic drilling machine, provided by the invention.
In the figure: 1. a first oil tank, 2, a communication pipe, 3, a second oil tank, 4, a test structure, 41, a pressure transmitter, 42, a sensor output signal line, 43, a control display instrument, 44, 485 communication lines, 45, a remote upper computer, H, liquid level difference, 5, a protection structure, 51, a protection box, 52, a cover plate, 53, a sealing plate, 54, a roller, 55, a screw rod, 56, a driving plate, 57, a transmission groove, 58, a clamping block, 6, a sealing structure, 61, a sealing plug, 62, a positioning rod, 63, an end cover, 64, a connecting rod, 65, a protruding rod, 66, a sealing rod, 67, a flow guide hole, 68, a first reset spring, 7, a driving structure, 71, a supporting rod, 72, a limiting groove, 73, a hydraulic cylinder, 74, a first sliding rod, 75, a sliding block, 76, a second sliding rod, 8, a pressure relief structure, 81, a supporting block, 82, a fixing rod, 83, a sliding sleeve, 84, a pressure relief rod, 85. the device comprises a mounting seat 86, a first pressure relief spring 87, a mounting block 88, a second pressure relief spring 9, an exhaust structure 91, a fixing plug 92, a guide block 93, a transmission rod 94 and a second return spring.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-11, the device for testing the oil level of the multiple fuel tanks of the automatic drilling machine comprises a first fuel tank 1 and a second fuel tank 3, wherein the first fuel tank 1 and the second fuel tank 3 are communicated through a communicating pipe 2, the bottom end of the second fuel tank 3 is connected with a test structure 4, the first fuel tank 1 and the second fuel tank 3 are both accommodated and protected through a protection structure 5, and a pressure relief structure 8 is arranged on the protection structure 5; the first oil tank 1 and the second oil tank 3 are respectively provided with a sealing structure 6 for controlling the sealing of the oil tanks, the first oil tank 1 and the second oil tank 3 are respectively provided with an exhaust structure 9 for exhausting air, and the sealing structures 6 can drive the exhaust structures 9; and the protective structure 5 is provided with a driving structure 7 for driving the oil filling barrel to move.
Specifically, the test structure 4 comprises a pressure transmitter 41, an oil outlet at the bottom end of the second oil tank 3 is connected to the pressure transmitter 41, a probe of the pressure transmitter 41 effectively senses the pressure at the bottom of the second oil tank 3, the pressure is converted into a 4-20 mA signal through the ratio of the pressure to the atmospheric pressure of the highest liquid level surface, the signal is input to a control display instrument 43 through a sensor output signal line 42, and the control display instrument 43 calculates and processes the 4-20 mA signal through a self-tuning function in a mode of combining an intelligent control theory and the traditional PID control;
the pressure transmitter 41 adopts a diffused silicon pressure sensor core body, and meets the requirements of high-sensitivity, high-precision and high-stability measurement of 5-20 kpa through a high-reliability amplifying circuit and a precise digital temperature compensation and nonlinear correction technology;
as shown in fig. 11, the control display instrument 43 includes a power input, a sensor signal input, a J1, a J2 relay output, a 485 communication interface, a master control output, and a ground. The power supply input end is a power supply for controlling the display instrument, and the power supply can be DC24V or customized into other power supply grades; at the signal input end of the sensor, signals can be 4-20 mA, and signals such as a thermocouple, a thermal resistor, analog quantity and the like can also be input;
the output ends of the J1 and J2 relays can be externally connected with functions of high fuel quantity, low-level alarm signal output and the like;
the 485 communication interface uploads signals to a remote upper computer 45 such as a computer or a PLC (programmable logic controller) through a 485 communication line 44 of the 485 communication interface, so that a remote control function is realized;
the main control output can be relay contact output or various analog quantity outputs;
the grounding electrode is connected with the ground when the instrument works in a place with strong interference or other equipment works cooperatively;
through a differential pressure transmitter which is arranged at the lowest position of the oil quantity of an oil tank, the pressure difference is converted into a 4-20 mA signal according to the atmospheric pressure ratio of the differential pressure transmitter to the highest liquid level surface, and the signal is input into an intelligent control instrument and then is subjected to programmable control program to realize the functions of displaying 0-100% of the fuel oil quantity, alarming output of high and low oil levels, 485 communication output and the like;
h is the liquid level difference of the highest and lowest positions of the fuel, the full fuel is the high position, the maximum value of the detection pressure kpa of the sensor is set, the maximum value corresponds to a 20mA signal output point, and the full fuel level is displayed by the instrument at the moment;
the fuel oil low point is set as the minimum value of the detection pressure kpa of the sensor and corresponds to a 4mA signal output point, and the low oil level is displayed by the instrument to be close to 0 percent at the moment;
similarly, any pressure value close to the high-position point can be set as a high-position alarm output value and is used for an oil level high alarm output signal of the fuel tank;
the pressure value close to any low point can be set as a low alarm output value for an oil level low alarm output signal of the fuel tank;
the output signals can be transmitted to a remote upper computer 8 through a 485 communication line 7, so that the functions of remote signal display, output and the like are realized;
the fuel level display, alarm output and 485 communication output functions of the electrical control system to two or more even special-shaped fuel tanks are effectively realized, the measurement of high sensitivity, high precision and high stability is met, IP68 can be realized by the protection grade, temperature compensation of a full-temperature area is realized, good electrical performance and long-term stability are realized, a system is formed by itself, the independent control system is flexible and convenient to use, the liquid level height control, display, alarm and signal transmission functions of other media such as multiple fuel tanks and multiple water tanks are well solved, and the application range is wide.
Specifically, the protection structure 5 includes protection boxes 51, the first oil tank 1 and the second oil tank 3 are respectively disposed inside the two protection boxes 51, a cover plate 52 is disposed on the top end of each protection box 51, a screw rod 55 rotatably connected to the cover plate 52 is disposed on the cover plate 52, the screw rod 55 drives a drive plate 56 to slide on the cover plate 52 in a threaded manner, a sealing plate 53 for sealing the end portion of the screw rod 55 is disposed on the cover plate 52, rolling wheels 54 rotatably connected to the two ends of the drive plate 56 are disposed at the two ends of the drive plate 56, the rolling wheels 54 roll in transmission grooves 57 obliquely disposed on clamping blocks 58, the sliding directions of the two clamping blocks 58 are opposite, and the clamping blocks 58 can be clamped with the protection boxes 51.
Specifically, the pressure relief structure 8 includes a supporting block 81, the supporting block 81 is fixed to the protection box 51, the fixing rod 82 is vertically fixed to the supporting block 81, the cross section of the fixing rod 82 is T-shaped, the fixing rod 82 is slidably connected to the sliding sleeve 83, an installation block 87 for preventing slipping is fixed to the bottom end of the fixing rod 82, two first pressure relief springs 86 are arranged inside the sliding sleeve 83, one ends of the two first pressure relief springs 86 are abutted to the sliding sleeve 83, the other ends of the two first pressure relief springs 86 are abutted to the fixing rod 82 and the installation block 87 respectively, a pressure relief rod 84 is fixed to the sliding sleeve 83, two ends of the pressure relief rod 84 slide between the installation seat 85, and a second pressure relief spring 88 is arranged between the pressure relief rod 84 and the installation seat 85; the first oil tank 1 and the second oil tank 3 are both accommodated and protected through a protection structure 5, and a pressure relief structure 8 is arranged on the protection structure 5; and then facilitate protecting the first oil tank 1 and the second oil tank 3 through the protective structure 5, carry on the pressure relief through the pressure relief structure 8 at the same time, make the protective structure 5 cooperate with the pressure relief structure 8 to relieve the impact, prevent the said first oil tank 1 and the second oil tank 3 from damaging effectively, has greatly improved the security, install the said first oil tank 1 or the second oil tank 3 in the inside of the guard box 51 at first, then install the said mount pad 85 on the rig stander, when there is foreign matter to strike the said guard box 51, the said guard box 51 protects the first oil tank 1 or the second oil tank 3 inside, meanwhile, through the dead lever 82 to touch the first relief spring 86, the pressure relief lever 84 touches the second relief spring 88 to relieve the pressure, has reduced the impact to the guard box 51 effectively, and then has greatly improved the stability of the first oil tank 1 and the second oil tank 3, while overhauing and maintaining the first oil tank 1 and the second oil tank 3, the sealing plate 53 is rotated to expose the screw rod 55, the screw rod 55 is protected by the sealing plate 53, the screw rod 55 is rotated, the screw rod 55 drives the drive plate 56 to slide towards the bottom end in a threaded manner, the roller 54 on the drive plate 56 rolls on the transmission groove 57, and then the two clamping blocks 58 are driven to slide relatively, so that the clamping blocks 58 are separated from the protective box 51, the cover plate 52 is mounted and dismounted more conveniently and rapidly, and the efficiency and the quality of maintenance of the first oil tank 1 and the second oil tank 3 are greatly improved.
Specifically, seal structure 6 includes sealing plug 61, all be equipped with threaded connection's sealing plug 61 on first oil tank 1 and the second oil tank 3, the one end of sealing plug 61 is equipped with threaded connection's end cover 63, the diameter of sealing plug 61 towards the one end of end cover 63 is less than the diameter of other one end, be equipped with sliding connection's sealing rod 66 on the sealing plug 61, sealing rod 66 is the T shape, be connected with first reset spring 68 between sealing rod 66 and the sealing plug 61, be equipped with the water conservancy diversion hole 67 of Y shape on the sealing rod 66, all be equipped with connecting rod 64 on first oil tank 1 and the second oil tank 3, be fixed with protruding pole 65 on the connecting rod 64.
Specifically, the exhaust structure 9 includes a transmission rod 93 with a U-shaped structure, the transmission rods 93 are disposed on the first oil tank 1 and the second oil tank 3, a second return spring 94 for returning is disposed on the transmission rod 93, a fixing plug 91 for sealing the exhaust hole is disposed at one end of the transmission rod 93, the fixing plug 91 is in a circular truncated cone shape, a guide block 92 rotatably connected to the other end of the transmission rod 93 is disposed, and the sealing plug 61 can contact with the guide block 92; the first oil tank 1 and the second oil tank 3 are respectively provided with a sealing structure 6 for controlling the sealing of the oil tanks, the first oil tank 1 and the second oil tank 3 are respectively provided with an exhaust structure 9 for exhausting air, and the sealing structures 6 can drive the exhaust structures 9; seal structure 6 set up make the interpolation of fluid convenient and fast more, be convenient for simultaneously drive 9 automatic exhausts of exhaust structure, make the interpolation of fluid high-efficient stable more, promptly: when oil needs to be added, the sealing plug 61 is rotated to separate the sealing plug 61 from the first oil tank 1, then the sealing plug 61 is in threaded connection with an external oil tank, when the sealing plug 61 is not abutted to the guide block 92, the second return spring 94 is contracted to drive the fixing plug 91 to unseal the exhaust hole, so that automatic pressure balance adjustment is facilitated, when the sealing plug 61 is abutted to the guide block 92, the guide block 92 and the transmission rod 93 are rotated to reduce the friction force between the guide block 92 and the sealing plug 61, so that the operation is more convenient, the guide block 92 drives the transmission rod 93 to seal the fixing plug 91 to the exhaust hole, then the oil filling barrel faces the oil filling hole, when the sealing rod 66 is not in contact with the convex rod 65, the first return spring 68 is contracted to drive the sealing rod 66 to abut to the convex rod 65, so that the flow guide hole 67 is not communicated with the oil filling barrel, and after the sealing rod 66 abuts against the convex rod 65, the sealing rod 66 drives the first return spring 68 to extend, so that the diversion hole 67 is communicated, oil can be rapidly added conveniently, splashing of the oil is effectively prevented, and the adding efficiency and quality of the oil are greatly improved.
Specifically, the driving structure 7 includes a hydraulic cylinder 73, the hydraulic cylinder 73 is connected to a sliding block 75, the sliding block 75 is connected to the protective box 51 in a sliding manner, a second sliding rod 76 is disposed on the sliding block 75, two supporting rods 71 are slidably connected to the second sliding rod 76, a limiting groove 72 is disposed on the supporting rod 71, the width of the limiting groove 72 is equal to the diameter of the positioning rod 62 on the sealing plug 61, the sliding block 75 is slidably connected to a first sliding rod 74 on the protective box 51, the first sliding rod 74 is of a cylindrical structure, and the protective structure 5 is provided with the driving structure 7 for driving the oiling barrel to move, so that the oiling barrel is automatically driven to be separated by the driving structure 7, and oiling is more stable, that: the liquid level sensor is arranged in the first oil tank 1, when the oiling barrel is used, the two support rods 71 are slid, the distance between the two support rods 71 is equal to the distance between the two positioning rods 62, the support rods 71 slide on the second slide rod 76, so that the sliding is more stable, then the positioning rods 62 are clamped with the limiting grooves 72, so that the oiling barrel is prevented from deviating, when the liquid level sensor detects that the oil liquid level is appropriate, the hydraulic cylinder 73 extends to drive the slide block 75 to slide with the first slide rod 74, so that the slide block 75 drives the support rods 71, the support rods 71 automatically drive the sealing plug 61 and the oiling barrel to be separated from the mailbox, the sealing rod 66 is not in contact with the convex rod 65, and the first return spring 68 contracts to drive the sealing rod 66 to abut against the sealing plug 61, so that the flow guide hole 67 is not communicated with the oiling barrel.
When the invention is used, firstly, the first oil tank 1 or the second oil tank 3 is arranged inside the protective box 51, then the mounting seat 85 is arranged on the frame of the drilling machine, when foreign matters impact the protective box 51, the protective box 51 protects the first oil tank 1 or the second oil tank 3 inside, meanwhile, the fixed rod 82 props against the first pressure relief spring 86, the pressure relief rod 84 props against the second pressure relief spring 88 for pressure relief, the impact force on the protective box 51 is effectively reduced, the stability of the first oil tank 1 and the second oil tank 3 is greatly improved, meanwhile, when the first oil tank 1 and the second oil tank 3 are overhauled and maintained, the sealing plate 53 is rotated to expose the screw rod 55, the screw rod 55 is rotated to conveniently protect the screw rod 55, the screw rod 55 is rotated, the screw rod 55 drives the drive plate 56 to slide towards the bottom end, the roller 54 on the drive plate 56 rolls on the transmission groove 57, and then the two clamping blocks 58 are driven to slide relatively, when oil needs to be added, the sealing plug 61 is rotated to separate the sealing plug 61 from the first oil tank 1, then the sealing plug 61 is in threaded connection with an external oil drum, when the sealing plug 61 is not in contact with the guide block 92, the second return spring 94 contracts to drive the fixing plug 91 to unseal the exhaust hole, so that automatic pressure balance adjustment is facilitated, when the sealing plug 61 is in contact with the guide block 92, the guide block 92 and the transmission rod 93 rotate to reduce the friction force between the guide block 92 and the sealing plug 61, so that the operation is more convenient, the guide block 92 drives the transmission rod 93, the fixing plug 91 seals the exhaust hole, then the oil filling barrel faces the oil filling hole, when the sealing rod 66 is not in contact with the convex rod 65, the first reset spring 68 contracts to drive the sealing rod 66 to abut against the sealing plug 61, so that the diversion hole 67 is not communicated with the oiling barrel, after the sealing rod 66 abuts against the convex rod 65, the sealing rod 66 drives the first reset spring 68 to extend, so that the diversion hole 67 is communicated, thereby facilitating rapid oil adding, effectively preventing splashing of oil, greatly improving the oil adding efficiency and quality, the liquid level sensor is arranged in the first oil tank 1, when the oiling barrel is used, the two support rods 71 are slid, the distance between the two support rods 71 is equal to the distance between the two positioning rods 62, the support rods 71 slide on the second slide rod 76, further making the sliding more stable, then the positioning rods 62 are clamped with the limiting grooves 72, further preventing the oiling barrel from deviating, when the liquid level sensor detects that the liquid level is appropriate, the hydraulic cylinder 73 extends to drive the slide block 75 to slide with the first slide rod 74, the slide block 75 drives the support rod 71, the support rod 71 automatically drives the sealing plug 61 and the oiling barrel thereof to be separated from the mailbox, the sealing rod 66 is not contacted with the convex rod 65, the first return spring 68 contracts to drive the sealing rod 66 to be abutted against the sealing plug 61, the flow guide hole 67 is not communicated with the oiling barrel, the sealing rod is connected with the pressure transmitter 41 through the oil outlet at the bottom end of the second oil tank 3, the probe of the pressure transmitter 41 effectively senses the bottom pressure of the second oil tank 3, the pressure is converted into a 4-20 mA signal through the ratio of the atmospheric pressure of the highest liquid level surface, the signal is input into the control display instrument 43 through the sensor output signal line 42, the control display instrument 43 adopts a mode of combining an intelligent control theory and the traditional PID control, the 4-20 mA signal is calculated and processed through a self-setting function, and the signal is uploaded to a remote upper computer or a PLC (programmable logic controller) and other remote upper computers 45 through the 485 communication line 44 of the 485 communication port, the remote control function is realized, the fuel level display, alarm output and 485 communication output functions of two or more even special-shaped fuel tanks by the electrical control system are effectively realized, the measurement of high sensitivity, high precision and high stability is met, IP68 can be realized by the protection level, full-temperature-region temperature compensation is realized, good electrical performance and long-term stability are realized, a system is formed by itself, the independent control system is flexibly and conveniently matched, the liquid level height control, display, alarm and signal transmission functions of other media such as multiple fuel tanks and multiple water tanks are well solved, and the application range is wide.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The device for testing the oil level of the multiple fuel tanks of the automatic drilling machine comprises a first fuel tank (1) and a second fuel tank (3), wherein the first fuel tank (1) and the second fuel tank (3) are communicated through a communicating pipe (2), and is characterized in that the bottom end of the second fuel tank (3) is connected with a testing structure (4), the first fuel tank (1) and the second fuel tank (3) are respectively provided with a sealing structure (6) for controlling the sealing of the fuel tanks, the first fuel tank (1) and the second fuel tank (3) are respectively provided with an exhaust structure (9) for exhausting, and the sealing structures (6) can drive the exhaust structures (9); the protective structure (5) is provided with a driving structure (7) for driving the oiling barrel to move; the testing structure (4) comprises a pressure transmitter (41), the oil outlet at the bottom end of the second oil tank (3) is connected to the pressure transmitter (41), the probe of the pressure transmitter (41) effectively senses the bottom pressure of the second oil tank (3), and the converted signal of the ratio is uploaded to a remote upper computer through the ratio of the pressure to the atmospheric pressure of the highest liquid level surface, so that remote control is realized.
2. The device for testing the oil level of the multi-fuel tank of the automatic drilling machine according to the claim 1 is characterized in that: first oil tank (1) and second oil tank (3) are all accomodate and are protected through protective structure (5), be equipped with pressure release structure (8) on protective structure (5).
3. The device for testing the oil level of the multi-fuel tank of the automatic drilling machine according to the claim 1 is characterized in that: the pressure transmitter (41) is a diffused silicon pressure sensor core.
4. The device for testing the oil level of the multi-fuel tank of the automatic drilling machine according to the claim 1 is characterized in that: the device also comprises a control display instrument (43), and the converted signal of the ratio is also uploaded to the control display instrument (43); the control display instrument (43) comprises a power supply input end, a sensor signal input end, J1, a J2 relay output end, a 485 communication interface, a master control output and a grounding electrode, wherein the power supply input end is a control display instrument power supply, and a power supply is DC 24V; the signal of the sensor signal input end is 4-20 mA, and is uploaded to a computer or a PLC remote upper computer (45) through a 485 communication line (44) of a 485 communication port.
5. The device for testing the oil level of the multi-fuel tank of the automatic drilling machine according to claim 2, is characterized in that: the protection structure (5) comprises protection boxes (51), the first oil tank (1) and the second oil tank (3) are respectively arranged inside the two protection boxes (51), a cover plate (52) is arranged at the top end of each protection box (51), a screw rod (55) connected in a rotating mode is arranged on each cover plate (52), a screw rod (55) drives a drive plate (56) to slide on each cover plate (52) in a threaded mode, a sealing plate (53) used for sealing the end portion of each screw rod (55) is arranged on each cover plate (52), rolling wheels (54) connected in a rotating mode are arranged at two ends of each drive plate (56), the rolling wheels (54) roll in transmission grooves (57) formed in the clamping blocks (58) in an inclined mode, the sliding directions of the clamping blocks (58) are opposite, and the clamping blocks (58) can be clamped with the protection boxes (51).
6. The device for testing the oil level of the multi-fuel tank of the automatic drilling machine according to claim 5, is characterized in that: the pressure relief structure (8) comprises a supporting block (81), the supporting block (81) is fixed on the protective box (51), a fixing rod (82) is vertically fixed on the supporting block (81), the section of the fixing rod (82) is in a T shape, the fixed rod (82) is connected with the sliding sleeve (83) in a sliding way, the bottom end of the fixed rod (82) is fixed with a mounting block (87) for preventing slipping, two first pressure relief springs (86) are arranged inside the sliding sleeve (83), one ends of the two first pressure relief springs (86) are respectively abutted against the sliding sleeve (83), the other ends of the two first pressure relief springs (86) are respectively abutted against the fixed rod (82) and the mounting block (87), a pressure relief rod (84) is fixed on the sliding sleeve (83), two ends of the pressure relief rod (84) slide with the mounting seat (85), and a second pressure relief spring (88) is arranged between the pressure relief rod (84) and the mounting seat (85).
7. The device for testing the oil level of the multi-fuel tank of the automatic drilling machine according to claim 5, is characterized in that: seal structure (6) include sealing plug (61), all be equipped with threaded connection's sealing plug (61) on first oil tank (1) and second oil tank (3), the one end of sealing plug (61) is equipped with threaded connection's end cover (63), the diameter of sealing plug (61) towards the one end of end cover (63) is less than the diameter of other one end, be equipped with sliding connection's sealing rod (66) on sealing plug (61), sealing rod (66) are T shape, be connected with first reset spring (68) between sealing rod (66) and sealing plug (61), be equipped with water conservancy diversion hole (67) of Y shape on sealing rod (66), all be equipped with connecting rod (64) on first oil tank (1) and second oil tank (3), be fixed with protruding pole (65) on connecting rod (64).
8. The automatic drilling machine multi-fuel tank oil level testing device of claim 7, wherein: exhaust structure (9) are including transfer line (93) of U-shaped structure, all be equipped with transfer line (93) on first oil tank (1) and second oil tank (3), be equipped with second reset spring (94) that are used for reseing on transfer line (93), the one end of transfer line (93) is equipped with fixed stopper (91) that are used for sealed exhaust hole, fixed stopper (91) are the round platform shape, the other end of transfer line (93) is equipped with guide block (92) of rotation connection, sealing plug (61) can with guide block (92) contact.
9. The apparatus for testing the oil level of a multi-fuel tank of an automatic drilling machine according to claim 8, wherein: drive structure (7) include pneumatic cylinder (73), pneumatic cylinder (73) are connected in slider (75), sliding connection between slider (75) and protective housing (51), be equipped with second slide bar (76) on slider (75), sliding connection has two bracing pieces (71) on second slide bar (76), be equipped with spacing groove (72) on bracing piece (71), the width of spacing groove (72) equals the diameter of locating lever (62) on sealing plug (61).
10. The automatic drilling machine multi-fuel tank oil level testing device of claim 9, wherein: the sliding block (75) is in sliding connection with a first sliding rod (74) on the protection box (51), and the first sliding rod (74) is of a cylindrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649991.6A CN113390486B (en) | 2021-06-10 | 2021-06-10 | Device for testing oil level of multiple fuel tanks of automatic drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649991.6A CN113390486B (en) | 2021-06-10 | 2021-06-10 | Device for testing oil level of multiple fuel tanks of automatic drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113390486A true CN113390486A (en) | 2021-09-14 |
| CN113390486B CN113390486B (en) | 2022-03-15 |
Family
ID=77620380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110649991.6A Active CN113390486B (en) | 2021-06-10 | 2021-06-10 | Device for testing oil level of multiple fuel tanks of automatic drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113390486B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009147320A1 (en) * | 2008-06-06 | 2009-12-10 | Sita France | Device for monitoring the fuel level in a tank of a vehicle |
| CN205097935U (en) * | 2015-11-19 | 2016-03-23 | 嘉兴职业技术学院 | Car oil tank of improvement structure |
| CN205130927U (en) * | 2015-11-19 | 2016-04-06 | 嘉兴职业技术学院 | Automobile fuel tank |
| CN106404104A (en) * | 2016-06-24 | 2017-02-15 | 钦州学院 | High-precision liquid level detection device |
| CN206141322U (en) * | 2016-10-09 | 2017-05-03 | 比亚迪股份有限公司 | Automotive fuel tank |
| CN206804101U (en) * | 2017-06-08 | 2017-12-26 | 杭州构建新型材料有限公司 | A kind of storage tank liquid level measuring apparatus |
| CN108597819A (en) * | 2018-06-12 | 2018-09-28 | 国家电网公司 | Transformer oil level verifying attachment and method |
| CN208134063U (en) * | 2018-04-24 | 2018-11-23 | 江苏长川科技有限公司 | A kind of fuel tank for automobile with decompression function |
| CN209859756U (en) * | 2019-05-20 | 2019-12-27 | 中山凯旋真空科技股份有限公司 | Oil storage device and transformer oiling equipment |
| CN210592270U (en) * | 2019-08-06 | 2020-05-22 | 四川千贻达机械有限责任公司 | Explosion-proof motorcycle fuel tank |
| CN210741609U (en) * | 2019-10-29 | 2020-06-12 | 江苏江海润液设备有限公司 | Storage tank liquid level measurement system with more accurate measurement |
| CN210760241U (en) * | 2019-09-27 | 2020-06-16 | 湖北一佳液压机械有限公司 | Oil tank anti-theft device |
| CN212073673U (en) * | 2020-04-17 | 2020-12-04 | 徐州徐工矿业机械有限公司 | Fuel tank convenient for external cleaning and mining dump truck |
| CN212579607U (en) * | 2020-06-13 | 2021-02-23 | 青岛罗泰克亿利汽车橡塑制品有限公司 | Protective device for automobile oil tank |
| CN213354178U (en) * | 2020-08-27 | 2021-06-04 | 河北世昌汽车部件有限公司 | Fuel tank with good protection effect |
-
2021
- 2021-06-10 CN CN202110649991.6A patent/CN113390486B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009147320A1 (en) * | 2008-06-06 | 2009-12-10 | Sita France | Device for monitoring the fuel level in a tank of a vehicle |
| CN205097935U (en) * | 2015-11-19 | 2016-03-23 | 嘉兴职业技术学院 | Car oil tank of improvement structure |
| CN205130927U (en) * | 2015-11-19 | 2016-04-06 | 嘉兴职业技术学院 | Automobile fuel tank |
| CN106404104A (en) * | 2016-06-24 | 2017-02-15 | 钦州学院 | High-precision liquid level detection device |
| CN206141322U (en) * | 2016-10-09 | 2017-05-03 | 比亚迪股份有限公司 | Automotive fuel tank |
| CN206804101U (en) * | 2017-06-08 | 2017-12-26 | 杭州构建新型材料有限公司 | A kind of storage tank liquid level measuring apparatus |
| CN208134063U (en) * | 2018-04-24 | 2018-11-23 | 江苏长川科技有限公司 | A kind of fuel tank for automobile with decompression function |
| CN108597819A (en) * | 2018-06-12 | 2018-09-28 | 国家电网公司 | Transformer oil level verifying attachment and method |
| CN209859756U (en) * | 2019-05-20 | 2019-12-27 | 中山凯旋真空科技股份有限公司 | Oil storage device and transformer oiling equipment |
| CN210592270U (en) * | 2019-08-06 | 2020-05-22 | 四川千贻达机械有限责任公司 | Explosion-proof motorcycle fuel tank |
| CN210760241U (en) * | 2019-09-27 | 2020-06-16 | 湖北一佳液压机械有限公司 | Oil tank anti-theft device |
| CN210741609U (en) * | 2019-10-29 | 2020-06-12 | 江苏江海润液设备有限公司 | Storage tank liquid level measurement system with more accurate measurement |
| CN212073673U (en) * | 2020-04-17 | 2020-12-04 | 徐州徐工矿业机械有限公司 | Fuel tank convenient for external cleaning and mining dump truck |
| CN212579607U (en) * | 2020-06-13 | 2021-02-23 | 青岛罗泰克亿利汽车橡塑制品有限公司 | Protective device for automobile oil tank |
| CN213354178U (en) * | 2020-08-27 | 2021-06-04 | 河北世昌汽车部件有限公司 | Fuel tank with good protection effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113390486B (en) | 2022-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104314063B (en) | Foundation pit enclosure displacement body is out of shape real-time measurement and control system and method | |
| CN102174898B (en) | Mine ground pressure monitoring system | |
| CN102288157A (en) | Method for monitoring deep settlement of foundation | |
| CN206311951U (en) | A kind of natural gas well site remote control terminal device | |
| CN102563359B (en) | Method and system for automatically monitoring vertical displacement of oil and gas pipeline in frozen soil region | |
| CN113390486B (en) | Device for testing oil level of multiple fuel tanks of automatic drilling machine | |
| CN108548518B (en) | Coal mining earth's surface removes and warp fixed point survey and drawing monitor | |
| CN109084921A (en) | A kind of push-bench tube coupling frictional resistance Detecting data and detection method | |
| US6542827B1 (en) | Well tending method and apparatus | |
| CN203732056U (en) | Device for measuring stratum deformation in permafrost region | |
| CN207991994U (en) | Rheological behavior in-situ measurement device after a kind of liquefaction of bottom sediment | |
| CN204401592U (en) | Bracing of foundation pit displacement body is out of shape real-time measurement and control system | |
| CN116357842A (en) | Device and method for installing and positioning osmometer in pressure measuring pipe | |
| CN110095093B (en) | Automatic monitor for roadway floor heave amount | |
| CN206556632U (en) | A kind of measurement apparatus of back pressure-bearing and deflection | |
| CN204255544U (en) | A kind of penstock inboard wall stress measurement mechanism | |
| CN211201865U (en) | Visual dynamic leaking stoppage analogue means of high temperature high pressure | |
| CN206055067U (en) | The recording equipment of measurement underground piping center arbitrary coordinate | |
| CN203908924U (en) | Pile soil lateral friction force detector | |
| CN211042618U (en) | Positive pressure sealing test monitoring device for transformer | |
| CN206132048U (en) | Subside a glass monitoring system | |
| CN202850010U (en) | Probe head for miniature static penetrometer | |
| CN202194596U (en) | Torque meter for oil well casing tongs | |
| CN201062500Y (en) | Swabbing work sealing spraying-proof observe and control apparatus | |
| CN201672956U (en) | Weighing water gauge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |