CN211847130U - Self-heating unpowered crude oil loading and unloading device - Google Patents
Self-heating unpowered crude oil loading and unloading device Download PDFInfo
- Publication number
- CN211847130U CN211847130U CN202020272611.2U CN202020272611U CN211847130U CN 211847130 U CN211847130 U CN 211847130U CN 202020272611 U CN202020272611 U CN 202020272611U CN 211847130 U CN211847130 U CN 211847130U
- Authority
- CN
- China
- Prior art keywords
- shell
- oil
- gas
- spring
- valve
- 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.)
- Active
Links
Images
Landscapes
- Feeding And Controlling Fuel (AREA)
Abstract
The utility model relates to a self-heating unpowered crude oil handling device. The technical scheme is as follows: be equipped with the gas collection package at the top of oil storage tank, pass through fastening bolt fixedly connected with pressure relief device in the upper end of gas collection package, be equipped with heating system in the left side below of oil storage tank, the installation is equipped with the gas conveyer pipe between gas collection package and the heating system, and the gas conveyer pipe is used for providing natural gas for heating system, still is equipped with oil loading scavenging line system, pressure temperature liquid level measurement system and teletransmission system on the oil storage tank. The beneficial effects are that: the device loading and unloading oil is convenient, easy operation, opens the oil loading valve and can adorn oil, opens and sweeps the remaining crude oil in the line system can adorn the oil pipe, has practiced thrift the energy, utilizes the natural gas in the crude oil just can realize the purpose for crude oil self-heating, has improved work efficiency, and the device is lower than original equipment cost, greatly reduced the cost.
Description
Technical Field
The utility model relates to an oil development equipment technical field, in particular to unpowered crude oil handling device of self-heating.
Background
Crude oil collected from oil fields is generally transported directly to various production stations through pipelines, but for marginal wells, oil wells are scattered, and if pipelines are erected, the cost is too high, and the quantity is small, so that the method is not practical. This situation requires the installation of oil collection or storage facilities, the provision of heating systems (natural gas or electrical) to prevent the crude oil from becoming too viscous to handle, and the provision of power pumps for handling the crude oil. This saves the cost of laying the pipeline, but increases the cost of the heating equipment and power pump equipment, as well as increases the energy consumption.
Chinese utility model patent publication No. CN205023235U discloses a built-in vacuum heating oil storage tank, the oil inlet pipe, the jar mouth, the breather valve, the spark arrester is installed on the upper top cap of oil storage tank, the gas that passes through the breather valve from the oil storage tank passes through the spark arrester, oil valve subassembly is installed to oil storage tank lower part right side wall mounting, the explosion-proof terminal box is installed to the lower part left side wall mounting of oil storage tank, install the heating pipe in the lower part of oil storage tank, install the heater in the heating pipe, the wiring end of heater stretches out the left port of heating pipe and makes it be in explosion-proof terminal box, the heat exchange tube is installed in the oil storage tank, communicate by the air duct between heat exchange tube and the heating pipe, the intraductal UNICOM vacuum tube of heat exchange, the vacuum tube passes the oil storage tank lateral wall to the outside the oil storage tank, fill in the heating pipe into heat-conducting medium, evacuation on the, the temperature in the heat exchange pipe is increased to heat the viscous crude oil in the oil storage tank, the heating efficiency is high, the built-in structure is compact, and the anti-theft and anti-collision effects are achieved. But has the disadvantages that the device heats the crude oil by electric heating, cannot reduce the electricity cost and increases the energy consumption.
Disclosure of Invention
The utility model aims at providing a self-heating unpowered crude oil handling device aiming at the defects existing in the prior art.
The technical scheme is as follows: the utility model discloses an oil storage tank, the gas collection package, pressure relief device, the gas conveyer pipe, heating system, the line system is swept to the dress oil, pressure temperature level measurement system, the teletransmission system, top at the oil storage tank is equipped with the gas collection package, through fastening bolt fixedly connected with pressure relief device in the upper end of gas collection package, left side below at the oil storage tank is equipped with heating system, the installation is equipped with the gas conveyer pipe between gas collection package and the heating system, the gas conveyer pipe is used for providing natural gas for heating system, still be equipped with the line system is swept to the dress oil on the oil storage tank, pressure temperature level measurement system and teletransmission system, the line system is swept to the dress oil is used for remaining crude oil in the dress oil pipe, pressure temperature level measurement system is used for measuring the pressure in the oil storage tank, oil temperature and liquid level, the teletransmission system is used for data transmission.
The pressure relief device comprises a second shell, a second upper spring seat, a second lower spring seat, a second spring, an air blocking valve and an air inlet, wherein the air inlet is formed in the lower end of the second shell, the second upper spring seat is arranged at the upper end of the inside of the second shell, the air blocking valve is arranged at the lower end of the inside of the second shell and is sealed on the air inlet, the second lower spring seat is arranged at the upper end of the air blocking valve in a welded mode, one end of the second spring is welded in the second upper spring seat, and the other end of the second spring is welded in the second lower spring seat.
The pressure relief device further comprises a first shell, a first valve seat, a first valve ball, a first lower spring seat, a first upper spring seat, a first spring and a gas outlet, the upper end of the second shell is provided with the first shell, the gas outlet is formed in the right side of the first shell, the first upper spring seat is arranged at the upper end of the inner portion of the first shell, the first lower spring seat is arranged at the lower end of the inner portion of the first shell, one end of the first spring is welded in the first lower spring seat, the other end of the first spring is welded in the first upper spring seat, a ball groove is formed at the lower end of the first lower spring seat, the upper end of the first valve ball is abutted to the ball groove, and the lower end of the first valve ball is seated on the first valve.
The second upper spring seat is arranged at the lower end of the first valve seat, the first valve seat and the second upper spring seat are fixedly connected together through the first shell and the second shell in a compression joint mode, and the first shell and the second shell are fixedly connected together through the fastening bolt.
Foretell pressure relief device still includes the gland, the third casing, the second disk seat, the second valve ball, left spring holder, right spring holder, the third spring, it is equipped with the gland to pass through fastening bolt is fixed in the upper end of second casing, T type opening has been seted up on the right side of second casing, the third casing passes through threaded connection with second valve seat crimping on T type opening, right-hand member at the third casing is equipped with the gas outlet, inside left end at the third casing is equipped with left spring holder, inside right-hand member at the third casing is equipped with right spring holder, the one end welding of third spring is in left spring holder, the other end welding is in right spring holder, the ball groove has been seted up at the left end of left spring holder, the one end butt of second valve ball sets up in the ball groove, the other end seat of second valve ball seals on the second disk seat.
The second upper spring seat is fixed at the upper end in the second shell by the second shell and the gland through fastening bolts.
The utility model has the advantages that: the gas collecting bag can collect natural gas in the oil storage tank, the natural gas is conveyed to the heating system through the gas conveying pipe to provide gas for the heating system, the heating system heats crude oil in the oil storage tank, after the temperature of the crude oil rises, the natural gas in the oil storage tank is more abundant, so that fuel can be better provided for the heating system, virtuous cycle is formed, the temperature pressure in the oil storage tank gradually rises to be higher than atmospheric pressure, when the oil needs to be filled in an oil tank truck, a valve is directly opened, the oil can be filled without using a power pump to provide power, an oil filling line sweeping system is arranged, gas in the tank can be swept, when the pressure in the tank is too high, the gas can be discharged through the pressure relief device, the external gas storage tank of the pressure relief device can be used for collecting the discharged gas, energy is saved, and the pressure relief device is a one-way valve, so that the gas cannot reversely flow back, the air pressure in the oil storage tank is ensured to be stable. The device is also provided with a pressure and temperature liquid level measuring and remote transmitting system, and a worker can check the operation condition in the device and whether oil discharge is needed or not at a station. The device loading and unloading oil is convenient, easy operation, opens the oil loading valve and can adorn oil, opens and sweeps the remaining crude oil in the line system can adorn the oil pipe, has practiced thrift the energy, utilizes the natural gas in the crude oil just can realize the purpose for crude oil self-heating, has improved work efficiency, and the device is lower than original equipment cost, greatly reduced the cost.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a right side view of the present invention;
FIG. 3 is a schematic diagram of a first embodiment pressure relief device;
FIG. 4 is a schematic diagram of a second embodiment pressure relief device;
in the figure: the gas collecting device comprises an oil storage tank 1, a gas collecting bag 2, a pressure relief device 3, a gas conveying pipe 4, a heating system 5, a first shell 3.1, a second shell 3.2, a first valve seat 3.3, a first valve ball 3.4, a first lower spring seat 3.5, a first upper spring seat 3.6, a first spring 3.7, a gas outlet 3.8, a second upper spring seat 3.9, a second lower spring seat 3.10, a second spring 3.11, a gas blocking valve 3.12, a gas inlet 3.13, a gland 3.14, a third shell 3.15, a second valve seat 3.16, a second valve ball 3.17, a left spring seat 3.18, a right spring seat 3.19 and a third spring 3.20.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1, as shown in figure 1, the utility model comprises an oil storage tank 1, a gas collection bag 2, a pressure relief device 3, a gas delivery pipe 4, a heating system 5, an oil loading and sweeping system, a pressure, temperature and liquid level measuring system and a remote transmission system, the top of the oil storage tank 1 is provided with a gas collecting bag 2, the upper end of the gas collecting bag 2 is fixedly connected with a pressure relief device 3 through a fastening bolt, a heating system 5 is arranged below the left side of the oil storage tank 1, a fuel gas conveying pipe 4 is arranged between the gas collection bag 2 and the heating system 5, the fuel gas conveying pipe 4 is used for providing fuel gas for the heating system 5, the oil storage tank 1 is also provided with an oil loading scavenging line system, a pressure temperature liquid level measuring system and a remote transmission system, the oil loading scavenging line system is used for residual crude oil in an oil loading pipe, the pressure temperature liquid level measuring system is used for measuring the pressure, the oil temperature and the liquid level in the oil storage tank, and the remote transmission system is used for transmitting data to a computer.
As shown in fig. 3, the pressure relief device 3 includes a second housing 3.2, a second upper spring seat 3.9, a second lower spring seat 3.10, a second spring 3.11, an air blocking valve 3.12, and an air inlet 3.13, wherein the air inlet 3.13 is disposed at the lower end of the second housing 3.2, the second upper spring seat 3.9 is disposed at the inner upper end of the second housing 3.2, the air blocking valve 3.12 is disposed at the inner lower end of the second housing 3.2, the air blocking valve 3.12 is seated on the air inlet 3.13, the second lower spring seat 3.10 is welded at the upper end of the air blocking valve 3.12, one end of the second spring 3.11 is welded in the second upper spring seat 3.9, and the other end is welded in the second lower spring seat 3.10.
The pressure relief device 3 further comprises a first housing 3.1, a first valve seat 3.3, a first valve ball 3.4, a first lower spring seat 3.5, a first upper spring seat 3.6, a first spring 3.7 and a gas outlet 3.8, wherein the upper end of the second housing 3.2 is provided with the first housing 3.1, the right side of the first housing 3.1 is provided with the gas outlet 3.8, the upper end of the inside of the first housing 3.1 is provided with the first upper spring seat 3.6, the lower end of the inside of the first housing 3.1 is provided with the first lower spring seat 3.5, one end of the first spring 3.7 is welded in the first lower spring seat 3.5, the other end of the first spring is welded in the first upper spring seat 3.6, the lower end of the first lower spring seat 3.5 is provided with a ball seat, the upper end of the first valve ball 3.4 is abutted against and arranged in the ball seat, and the lower end of the first valve ball 3.4 is sealed on the first valve seat.
The second upper spring seat 3.9 is arranged at the lower end of the first valve seat 3.3, the first valve seat 3.3 and the second upper spring seat 3.9 are fixedly connected together through the first shell 3.1 and the second shell 3.2 in a compression joint mode, and the first shell 3.1 and the second shell 3.2 are fixedly connected together through fastening bolts.
The gas storage tank is externally connected to the gas outlet of the pressure relief device and used for storing gas discharged from the oil storage tank, when the temperature of crude oil in the oil storage tank gradually rises, the gas content in the oil storage tank gradually increases, the gas in the oil storage tank reaches a certain pressure, the gas enters the pressure relief device from the gas inlet, the gas pressure jacks the gas blocking valve, part of the gas enters the second shell, when the gas reduces the gas pressure and is insufficient, the second spring closes the gas blocking valve by using the elastic force to prevent the gas from entering, when the gas pressure continuously rises, the gas blocking valve cannot be closed by the elastic force of the second spring, when the second shell is filled with the gas and reaches a certain pressure value, the gas pressure jacks the first ball valve, the gas enters from the through hole of the first valve seat, and finally the gas flows into the externally connected gas storage tank from the gas outlet, and the gas cannot reversely flow back because the device is a one, be equipped with two-layer check valve, first layer check valve can have a cushioning effect to the gas pressure in the oil storage tank, guarantees that the internal gas pressure of oil storage tank is stable, avoids gaseous just directly to discharge gas from pressure relief device through one deck check valve, leads to the gas pressure in the oil storage tank to be insufficient, can't unload out smoothly because of the pressure is not enough when needs oil discharge.
Example 2, as shown in figure 1, the utility model comprises an oil storage tank 1, a gas collection bag 2, a pressure relief device 3, a gas delivery pipe 4, a heating system 5, an oil loading and sweeping system, a pressure, temperature and liquid level measuring system and a remote transmission system, the top of the oil storage tank 1 is provided with a gas collecting bag 2, the upper end of the gas collecting bag 2 is fixedly connected with a pressure relief device 3 through a fastening bolt, a heating system 5 is arranged below the left side of the oil storage tank 1, a fuel gas conveying pipe 4 is arranged between the gas collection bag 2 and the heating system 5, the fuel gas conveying pipe 4 is used for providing fuel gas for the heating system 5, the oil storage tank 1 is also provided with an oil loading scavenging line system, a pressure temperature liquid level measuring system and a remote transmission system, the oil loading scavenging line system is used for residual crude oil in an oil loading pipe, the pressure temperature liquid level measuring system is used for measuring the pressure, the oil temperature and the liquid level in the oil storage tank, and the remote transmission system is used for transmitting data to a computer.
As shown in fig. 4, the pressure relief device 3 includes a second housing 3.2, a second upper spring seat 3.9, a second lower spring seat 3.10, a second spring 3.11, an air blocking valve 3.12, and an air inlet 3.13, wherein the air inlet 3.13 is disposed at the lower end of the second housing 3.2, the second upper spring seat 3.9 is disposed at the inner upper end of the second housing 3.2, the air blocking valve 3.12 is disposed at the inner lower end of the second housing 3.2, the air blocking valve 3.12 is seated on the air inlet 3.13, the second lower spring seat 3.10 is welded at the upper end of the air blocking valve 3.12, one end of the second spring 3.11 is welded in the second upper spring seat 3.9, and the other end is welded in the second lower spring seat 3.10.
The difference from the embodiment 1 is that the pressure relief device 3 further comprises a gland 3.14, a third housing 3.15, a second valve seat 3.16, a second valve ball 3.17, a left spring seat 3.18, a right spring seat 3.19 and a third spring 3.20, a gland 3.14 is fixedly arranged at the upper end of the second shell 3.2 through a fastening bolt, a T-shaped opening is arranged at the right side of the second shell 3.2, the third shell 3.15 presses the second valve seat 3.16 on the T-shaped opening through threaded connection, the right end of the third shell 3.15 is provided with an air outlet 3.8, the left end of the inside of the third shell 3.15 is provided with a left spring seat 3.18, a right spring seat 3.19 is arranged at the right end in the third shell 3.15, one end of a third spring 3.20 is welded in the left spring seat 3.18, the other end is welded in the right spring seat 3.19, the left end of the left spring seat 3.18 is provided with a ball groove, one end of the second valve ball 3.17 is abutted and arranged in the ball groove, and the other end of the second valve ball 3.17 is seated on the second valve seat 3.16.
The second upper spring seat 3.9 is fixed on the upper end of the inner part of the second shell 3.2 by the second shell 3.2 and the gland 3.14 through fastening bolts.
The gas storage tank is externally connected to the gas outlet of the pressure relief device and used for storing gas discharged from the oil storage tank, when the temperature of crude oil in the oil storage tank gradually rises, the gas content in the oil storage tank gradually increases, the gas in the oil storage tank reaches a certain pressure, the gas enters the pressure relief device from the gas inlet, the gas pressure jacks the gas blocking valve, part of the gas enters the second shell, when the gas reduces the gas pressure and is insufficient, the second spring closes the gas blocking valve by using the elastic force to prevent the gas from entering, when the gas pressure continuously rises, the gas blocking valve cannot be closed by the elastic force of the second spring, when the second shell is filled with the gas and reaches a certain pressure value, the gas pressure jacks the second ball valve, the gas enters from the through hole of the second valve seat, and finally the gas flows into the externally connected gas storage tank from the gas outlet, and the gas cannot reversely flow back because the device is a one, be equipped with two-layer check valve, first layer check valve can have a cushioning effect to the gas pressure in the oil storage tank, guarantees that the internal gas pressure of oil storage tank is stable, avoids gaseous just directly to discharge gas from pressure relief device through one deck check valve, leads to the gas pressure in the oil storage tank to be insufficient, can't unload out smoothly because of the pressure is not enough when needs oil discharge.
The gas collecting bag can collect natural gas in the oil storage tank, the natural gas is conveyed to the heating system through the gas conveying pipe to provide gas for the heating system, the heating system heats crude oil in the oil storage tank, after the temperature of the crude oil rises, the natural gas in the oil storage tank is more abundant, so that fuel can be better provided for the heating system, virtuous cycle is formed, the temperature pressure in the oil storage tank gradually rises to be higher than atmospheric pressure, when the oil needs to be filled in an oil tank truck, a valve is directly opened, the oil can be filled without using a power pump to provide power, an oil filling line sweeping system is arranged, gas in the tank can be swept, when the pressure in the tank is too high, the gas can be discharged through the pressure relief device, the external gas storage tank of the pressure relief device can be used for collecting the discharged gas, energy is saved, and the pressure relief device is a one-way valve, so that the gas cannot reversely flow back, the air pressure in the oil storage tank is ensured to be stable. The device is also provided with a pressure and temperature liquid level measuring and remote transmitting system, and a worker can check the operation condition in the device and whether oil discharge is needed or not at a station. The device loading and unloading oil is convenient, easy operation, opens the oil loading valve and can adorn oil, opens and sweeps the remaining crude oil in the line system can adorn the oil pipe, has practiced thrift the energy, utilizes the natural gas in the crude oil just can realize the purpose for crude oil self-heating, has improved work efficiency, and the device is lower than original equipment cost, greatly reduced the cost.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (6)
1. A self-heating unpowered crude oil loading and unloading device is characterized in that: the oil storage tank comprises an oil storage tank (1), a gas collection bag (2), a pressure relief device (3), a gas conveying pipe (4), a heating system (5), an oil loading line sweeping system, a pressure temperature liquid level measurement system and a remote transmission system, wherein the gas collection bag (2) is arranged at the top of the oil storage tank (1), the pressure relief device (3) is fixedly connected to the upper end of the gas collection bag (2) through a fastening bolt, the heating system (5) is arranged below the left side of the oil storage tank (1), the gas conveying pipe (4) is arranged between the gas collection bag (2) and the heating system (5), the gas conveying pipe (4) is used for providing natural gas for the heating system (5), the oil loading line sweeping system, the pressure temperature liquid level measurement system and the remote transmission system are further arranged on the oil storage tank (1), the oil loading line sweeping system is used for measuring residual crude oil in an oil loading pipe, and the pressure temperature liquid level measurement system is, The oil temperature and the liquid level, and the remote transmission system is used for transmitting data to the computer.
2. The self-heating, unpowered crude oil handling device of claim 1, wherein: pressure relief device (3) include second casing (3.2), spring holder (3.9) on the second, spring holder (3.10) under the second, second spring (3.11), keep off gas valve (3.12), air inlet (3.13), lower extreme at second casing (3.2) is equipped with air inlet (3.13), spring holder (3.9) on the inside upper end of second casing (3.2), be equipped with air baffle valve (3.12) at the inside lower extreme of second casing (3.2), air baffle valve (3.12) seat seal is on air inlet (3.13), upper end welding at air baffle valve (3.12) is equipped with spring holder (3.10) under the second, the one end welding of second spring (3.11) is in spring holder (3.9) on the second, the other end welding is in spring holder (3.10) under the second.
3. The self-heating, unpowered crude oil handling device of claim 2, wherein: the pressure relief device (3) also comprises a first shell (3.1), a first valve seat (3.3), a first valve ball (3.4), a first lower spring seat (3.5), a first upper spring seat (3.6), a first spring (3.7) and an air outlet (3.8), the upper end of the second shell (3.2) is provided with the first shell (3.1), an air outlet (3.8) is arranged on the right side of the first shell (3.1), a first upper spring seat (3.6) is arranged at the upper end in the first shell (3.1), a first lower spring seat (3.5) is arranged at the lower end in the first shell (3.1), one end of a first spring (3.7) is welded in the first lower spring seat (3.5), the other end is welded in the first upper spring seat (3.6), the lower end of the first lower spring seat (3.5) is provided with a ball groove, the upper end of the first valve ball (3.4) is abutted and arranged in the ball groove, and the lower end of the first valve ball (3.4) is seated and sealed on the first valve seat (3.3).
4. A self-heating, unpowered crude oil handling device as recited in claim 3 wherein: the second upper spring seat (3.9) is arranged at the lower end of the first valve seat (3.3), the first valve seat (3.3) and the second upper spring seat (3.9) are fixedly connected together through the first shell (3.1) and the second shell (3.2) in a compression joint mode, and the first shell (3.1) and the second shell (3.2) are fixedly connected together through fastening bolts.
5. The self-heating, unpowered crude oil handling device of claim 2, wherein: the pressure relief device (3) further comprises a gland (3.14), a third shell (3.15), a second valve seat (3.16), a second valve ball (3.17), a left spring seat (3.18), a right spring seat (3.19) and a third spring (3.20), the gland (3.14) is fixedly arranged at the upper end of the second shell (3.2) through a fastening bolt, a T-shaped opening is formed in the right side of the second shell (3.2), the third shell (3.15) is connected with the second valve seat (3.16) in a pressing mode on the T-shaped opening through threads, an air outlet (3.8) is formed in the right end of the third shell (3.15), a left spring seat (3.18) is arranged at the left end inside the third shell (3.15), a right spring seat (3.19) is arranged at the right end inside the third shell (3.15), the third spring is welded in the left spring seat (3.18) at one end of the third shell (3.20), the right spring seat (3.19) is welded in the right spring seat (3.19), and a left ball groove is formed in the left spring seat (3, one end of the second valve ball (3.17) is abutted and arranged in the ball groove, and the other end of the second valve ball (3.17) is seated on the second valve seat (3.16).
6. The self-heating, unpowered crude oil handling device of claim 5, wherein: the second upper spring seat (3.9) is fixed at the upper end in the second shell (3.2) by the second shell (3.2) and the gland (3.14) through fastening bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020272611.2U CN211847130U (en) | 2020-03-09 | 2020-03-09 | Self-heating unpowered crude oil loading and unloading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020272611.2U CN211847130U (en) | 2020-03-09 | 2020-03-09 | Self-heating unpowered crude oil loading and unloading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211847130U true CN211847130U (en) | 2020-11-03 |
Family
ID=73239243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020272611.2U Active CN211847130U (en) | 2020-03-09 | 2020-03-09 | Self-heating unpowered crude oil loading and unloading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211847130U (en) |
-
2020
- 2020-03-09 CN CN202020272611.2U patent/CN211847130U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202442096U (en) | Liquid nitrogen storage tank | |
| CN211847130U (en) | Self-heating unpowered crude oil loading and unloading device | |
| CN112186288A (en) | Cooling device, power battery and car | |
| CN213270238U (en) | Water leakage detection device for water pump maintenance | |
| CN111156420B (en) | Hydrogen leakage prevention device | |
| CN110131573B (en) | Quick filling system of hydrogen storage cylinder of hydrogen fuel cell automobile | |
| CN216922660U (en) | Hydraulic pump station provided with closed pressure oil tank and suitable for outdoor environment | |
| CN110486203A (en) | Hand pump fuel oil prefilter main casing assembly | |
| CN214948209U (en) | Self-boosting residual gas recycling device of low-temperature liquid oxygen storage tank | |
| CN215496308U (en) | Electric locomotive transformer exhaust apparatus | |
| CN219281851U (en) | Double-cavity fuel tank | |
| CN218119394U (en) | Gas leakage recovery device for natural gas filling station | |
| CN214837088U (en) | Explosion-proof safety protection device of mining water pump | |
| CN110836328A (en) | Prizing tank | |
| CN201490271U (en) | Piston type hydrogen transporting device for fuel cell | |
| CN215208443U (en) | Movable liquid quantitative split charging device | |
| CN221075682U (en) | A connect nipple joint for soft packet of battery helium mass spectrum leak hunting | |
| CN217999734U (en) | Stirling engine advances exhaust system | |
| CN213141393U (en) | Filling station's cubic vapor recovery system device | |
| CN211574777U (en) | Vertical oil conveying device with high conveying efficiency and parts for vertical oil conveying device | |
| CN218324998U (en) | Modular automobile urea box | |
| CN219910722U (en) | Nitrogen protection module for geothermal well | |
| CN214192564U (en) | Multifunctional loading device of oil tank truck | |
| CN215259200U (en) | Hydrogenation station unloads gas coupling mechanism | |
| CN213771327U (en) | Zero-emission tertiary oil gas recovery system of gas station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |