CN112319526A - Top adding and discharging system of liquefied gas railway pressure tank car and pressure tank car - Google Patents
Top adding and discharging system of liquefied gas railway pressure tank car and pressure tank car Download PDFInfo
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- CN112319526A CN112319526A CN202011001050.3A CN202011001050A CN112319526A CN 112319526 A CN112319526 A CN 112319526A CN 202011001050 A CN202011001050 A CN 202011001050A CN 112319526 A CN112319526 A CN 112319526A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D5/00—Tank wagons for carrying fluent materials
- B61D5/08—Covers or access openings; Arrangements thereof
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
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Abstract
The invention discloses a top adding and discharging system of a liquefied gas railway pressure tank car and the pressure tank car, wherein the adding and discharging system comprises a manhole neck flange arranged at the top of a tank body of the tank car, a manhole flange cover arranged on the manhole neck flange, a first loading and unloading valve, a second loading and unloading valve, a third loading and unloading valve, a low-level check valve, a high-level check valve, a pressure gauge and a thermometer which are arranged on the manhole flange cover and can be communicated with the tank body, a magnetic floating ball liquid level meter which is arranged on the manhole flange cover, the bottom of which extends into the tank body and the bottom of which is sealed, and an oil pressure distributor and a hand oil pump which are arranged on the manhole flange cover; the hand oil pump is communicated to the oil pressure distributor, and the oil pressure distributor is respectively communicated with the first loading and unloading valve, the second loading and unloading valve, the third loading and unloading valve, the first remote control pipeline and the second remote control pipeline. The invention can ensure that the tank car has the functions of filling and unloading the medium and ensure the safety of the tank car in the using process.
Description
Technical Field
The invention belongs to the technical field of railway tank cars, and relates to a top charging and discharging system of a liquefied gas railway pressure tank car and the pressure tank car.
Background
The liquefied gas railway tank car (hereinafter referred to as pressure tank car) is mainly used for loading and transporting mediums such as liquefied petroleum gas, butadiene, dimethyl ether and the like. The pressure tank car consists of a tank body and a walking device, wherein the tank body is provided with a charging and discharging system which is used for realizing the functions of charging and discharging media. In recent years, along with the continuous upgrading of loading and unloading facilities of liquid loading and unloading stations of pressure tank trucks, the adaptability, operability and safety of the charging and discharging system of the original pressure tank truck are gradually reduced, and certain potential safety hazards exist in the application process.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a top charging and discharging system of a liquefied gas railway pressure tank car and the pressure tank car, which ensure that the tank car has the functions of filling and unloading media and ensure the safety of the tank car in the using process.
In order to achieve the purpose, the invention adopts the following technical scheme:
a top charging and discharging system of a liquefied gas railway pressure tank car comprises a manhole neck flange arranged at the top of a tank body of the tank car, a manhole flange cover arranged on the manhole neck flange, a first loading and unloading valve, a second loading and unloading valve, a third loading and unloading valve, a low-level check valve, a high-level check valve, a pressure gauge and a temperature gauge, a magnetic floating ball liquid level meter, an oil pressure distributor and a hand oil pump, wherein the first loading and unloading valve, the second loading and unloading valve, the third loading and unloading valve, the low-level check valve and the high-level check valve are arranged on the manhole flange cover and penetrate through the manhole flange cover to extend into the tank body;
the inlet ends of the first loading and unloading valve and the second loading and unloading valve are respectively connected with a liquid inlet and outlet pipeline, the two liquid inlet and outlet pipelines extend to the bottom in the tank body, and the outlet ends of the first loading and unloading valve and the second loading and unloading valve are provided with liquid inlet and outlet flange interfaces to be connected with liquid pipelines of a loading and unloading station; the inlet end of the third loading and unloading valve is communicated with the tank body, and the outlet end of the third loading and unloading valve is provided with a gas flange connector to be connected with a gas pipeline of a loading and unloading liquid station;
the inlet end of the low-level check valve is connected with a low-level check inner pipe which extends to the bottom in the tank body, and the outlet end of the low-level check valve is provided with a low-level check valve port connecting pipe; the inlet end of the high-level inspection valve is connected with a high-level inspection inner pipe, the high-level inspection inner pipe extends to the position of the maximum allowable filling amount in the tank body, and the outlet end of the high-level inspection valve is provided with a high-level inspection valve port connecting pipe;
the hand oil pump is communicated to the oil pressure distributor, and the oil pressure distributor is respectively communicated with the first loading and unloading valve, the second loading and unloading valve, the third loading and unloading valve, the first remote control pipeline and the second remote control pipeline; first remote control pipeline and second remote control pipeline symmetry are established in jar external both sides and are extended to jar body middle and lower part, and are equipped with manual trip valve respectively at first remote control pipeline and second remote control pipeline end.
The invention also comprises the following technical characteristics:
specifically, a protective cover cylinder is arranged on the manhole flange cover, and a cover cylinder cover capable of being opened and closed is arranged on the protective cover cylinder; the protective cover cylinder, the cover cylinder cover and the manhole flange cover enclose a closed protective cavity; the first loading and unloading valve, the second loading and unloading valve, the third loading and unloading valve, the low-level check valve, the high-level check valve, the pressure gauge, the thermometer, the upper part of the magnetic floating ball liquid level meter, the oil pressure distributor and the hand oil pump are all positioned in the closed protection cavity.
Specifically, the protective cover cylinder is fixed on the manhole flange cover through bolts; one end of the cover cylinder cover is hinged with the protective cover cylinder, and the other end of the cover cylinder cover is provided with a handle and a lock catch; the lower end of the lock catch is provided with a lock box which is arranged on the outer side wall of the protective cover barrel; the lock catch can extend into the lock box and can be locked at the lower end of the lock catch in the lock box so as to fix the lock catch and close the cover cylinder cover; when the medium is loaded and unloaded, the cover cylinder cover is opened, and the cover cylinder cover is closed during the completion of loading and unloading and transportation.
Specifically, the low-level inspection valve port connecting pipe, the high-level inspection valve port connecting pipe, the first remote control pipeline and the second remote control pipeline all extend out of the outer wall of the protective cover cylinder.
Specifically, the oil pressure distributor includes an integral structure: a flange seat and a cylindrical distribution cavity on the flange seat; the flange seat can be fixedly arranged on the manhole flange cover, and five threaded through holes are formed in the side wall of the cylindrical distribution cavity and used for being connected with a first loading and unloading valve, a second loading and unloading valve, a third loading and unloading valve, a first remote control pipeline and a second remote control pipeline respectively; and a threaded through hole is formed in the top of the cylindrical distribution cavity and used for installing a first stop valve, the first stop valve is communicated with the hand-pressed oil pump, and the hand-pressed oil pump can control the opening and closing of the first loading and unloading valve, the second loading and unloading valve and the third loading and unloading valve through the oil pressure distributor.
Specifically, the pressure gauge is a vibration-resistant pressure gauge, the thermometer is a bimetallic thermometer, and a thermometer protecting pipe is sleeved on the part of the thermometer extending into the tank body.
Specifically, the lower end of the pressure gauge is connected into the tank body through a second stop valve.
Specifically, the manhole flange cover is fixed on the manhole neck flange through a stud and a nut.
The pressure tank car comprises a tank body and a top charging and discharging system of the liquefied gas railway pressure tank car, wherein the charging and discharging system is arranged at the top of the tank body.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention can ensure that the tank car has the functions of filling and unloading the medium and ensure the safety of the tank car in the using process.
The valve and the instrument in the drainage system are both arranged on the manhole flange cover, so the drainage system is compact in layout and convenient to operate.
The emergency cut-off valve is provided with remote control pipelines at two sides, and the cut-off valve can be cut off emergently at the bottoms of two sides of the pressure tank truck under abnormal conditions, so that the safety of loading and unloading liquid of the pressure tank truck is guaranteed.
The invention is provided with the high-level check valve and the low-level check valve, thereby effectively controlling the filling amount of liquid in the tank when the tank car is filled and the residual amount of liquid in the tank when the tank car is unloaded, and improving the running safety of the vehicle under the states of heavy load and empty load.
The invention is provided with the liquid level meter and the pressure gauge, realizes state monitoring on the medium and ensures the use safety of the pressure tank truck.
The invention is provided with the closed protective cover cylinder to protect the valve parts and the instruments in the exhaust system from accidental damage.
Drawings
FIG. 1 is an overall view of the present invention with the shield canister removed;
FIG. 2 is a schematic view of the installation of the present invention on a tank;
the reference numerals have the meanings given below:
1. the manhole cover comprises a manhole neck flange, 2, a manhole flange cover, 3, a first loading and unloading valve, 4, a second loading and unloading valve, 5, a third loading and unloading valve, 6, a low-level check valve, 6-1, a low-level check valve port connecting pipe, 7, a high-level check valve, 7-1, a high-level check valve port connecting pipe, 8, a pressure gauge, 9, a thermometer, 10, a magnetic floating ball liquid level meter, 11, an oil pressure distributor, 12, a hand oil pump, 13, a first remote control pipeline, 14, a second remote control pipeline, 15, a protective cover cylinder, 16, a cover cylinder cover, 17, a handle, 18, a lock catch, 19, a lock box, 20, a first stop valve, 21, a second stop valve and 100, and the tank body.
The invention is described in detail below with reference to the drawings and the detailed description.
Detailed Description
The present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention fall within the protection scope of the present invention. The present invention will be described in further detail with reference to examples.
Example 1:
as shown in fig. 1 to 2, the present embodiment provides a top refueling system for a liquefied gas railway pressure tank car, which comprises a manhole neck flange 1 arranged at the top of a tank body 100 of the tank car and a manhole flange cover 2 arranged on the manhole neck flange 1, and further comprises a first loading and unloading valve 3, a second loading and unloading valve 4, a third loading and unloading valve 5, a low level inspection valve 6 and a high level inspection valve 7 which are arranged on the manhole flange cover 2 and extend into the tank body 100 through the manhole flange cover 2, a pressure gauge 8 and a temperature gauge 9 which are arranged on the manhole flange cover 2 and can be communicated into the tank body 100, a magnetic floating ball level gauge 10 which is arranged on the manhole flange cover 2 and the bottom of which extends into the tank body 100 and the bottom of which is sealed, and an oil pressure distributor 11 and a hand pressure oil pump 12 which are arranged on the.
Specifically, the lower ends of the first loading and unloading valve 3 and the second loading and unloading valve 4 are respectively connected with a liquid inlet and outlet pipeline, the two liquid inlet and outlet pipelines extend to the bottom in the tank body 100, and the upper ends of the first loading and unloading valve 3 and the second loading and unloading valve 4 are provided with liquid inlet and outlet flange interfaces to be connected with liquid pipelines of a loading and unloading station; the lower end of the third loading and unloading valve 5 is communicated with the inside of the tank body 100, and the upper end of the third loading and unloading valve 5 is provided with a gas flange interface to be connected with a gas pipeline of a loading and unloading liquid station. The first loading and unloading valve, the second loading and unloading valve and the third loading and unloading valve in the embodiment are all of conventional structures, and the first loading and unloading valve, the second loading and unloading valve and the third loading and unloading valve in the embodiment adopt QGQY41F-25-2 type emergency cut-off valves (the emergency cut-off valves mentioned below are all the first loading and unloading valve, the second loading and unloading valve and the third loading and unloading valve); the emergency cut-off valve is of a straight-through structure, both ends of the emergency cut-off valve are provided with concave-convex flanges, the top of the emergency cut-off valve is provided with a valve cover for sealing, and the emergency cut-off valve further comprises a valve rod, a pilot valve clack, a ball valve, a floating valve clack, a small spring and the like. The opening process of the emergency cut-off valve is as follows: the handle of the hand oil pump is moved firstly to make the oil pressure reach 3MPa, the deflector rod of the valve starts to rotate, the pilot valve clack is opened, the medium enters the cavity between the ball valves through the clearance around the valve rod and builds pressure in the cavity gradually, when the pressure at the two sides of the floating valve clack reaches balance, the floating valve clack is opened rapidly under the push of small spring force, at the moment, slight and clear impact sound can be heard, the interval from the opening of the pilot valve to the opening of the floating valve clack is within one minute, and then the ball valve is opened smoothly and slowly to carry out normal loading and unloading work. The closing process of the emergency cut-off valve is as follows: after loading and unloading are finished, the handle of the hand-pressed oil pump is loosened, oil pressure is unloaded, the emergency cut-off valve is closed, and finally the ball valve is closed.
The inlet end of the low-level check valve 6 is connected with a low-level check inner pipe which extends to the bottom in the tank body 100, and the outlet end of the low-level check valve 6 is provided with a low-level check valve port connecting pipe 6-1; the inlet end of the high-level check valve 7 is connected with a high-level check inner pipe, the high-level check inner pipe extends to the position of the maximum allowable filling amount in the tank body 100, and the outlet end of the high-level check valve 7 is provided with a high-level check valve port connecting pipe 7-1. The low-level check valve 6 and the high-level check valve 7 in the embodiment are both of conventional structures, and when liquid is drained, if no liquid flows out from the low-level check valve port connecting pipe 6-1 after the low-level check valve 6 is opened, the liquid is considered to be drained cleanly; the height of the inner pipe is checked at the high position, and is the limit position of the liquid level in the tank when the ambient temperature is 50 ℃. When the liquid level reaches this level, the high level check valve 7 is opened and liquid is ejected. The liquid level is generally not allowed to reach this position. When the magnetic floating ball liquid level meter 10 fails, the function of safely measuring the highest liquid level can be realized, but the high-level check valve 7 is forbidden to be used for controlling the liquid level.
The hand-pressure oil pump 12 is communicated to an oil pressure distributor 11, and the oil pressure distributor 11 is respectively communicated with the first loading and unloading valve 3, the second loading and unloading valve 4, the third loading and unloading valve 5, the first remote control pipeline 13 and the second remote control pipeline 14; the first remote control pipeline 13 and the second remote control pipeline 14 are symmetrically arranged at two sides of the outside of the tank body 100 and extend to the middle lower part of the tank body 100, and manual cut-off valves are respectively arranged at the tail ends of the first remote control pipeline 13 and the second remote control pipeline 14.
A protective cover cylinder 15 is arranged on the manhole flange cover 2, and a cover cylinder cover 16 which can be opened and closed is arranged on the protective cover cylinder 15; the protective cover cylinder 15, the cover cylinder cover 16 and the manhole flange cover 2 enclose a closed protective cavity; the first loading and unloading valve 3, the second loading and unloading valve 4, the third loading and unloading valve 5, the low-level check valve 6, the high-level check valve 7, the pressure gauge 8, the thermometer 9, the upper part of the magnetic floating ball liquid level meter 10, the oil pressure distributor 11 and the hand oil pump 12 are all positioned in the closed protection cavity.
The protective cover cylinder 15 is fixed on the manhole flange cover 2 through bolts; one end of the cover cylinder cover 16 is hinged with the protective cover cylinder 15, and the other end of the cover cylinder cover 16 is provided with a handle 17 and a lock catch 18; the lower end of the lock catch 18 is provided with a lock box 19, and the lock box 19 is arranged on the outer side wall of the protective cover barrel 15; the lock catch 18 can extend into the lock box 19 and can be locked at the lower end of the lock catch 18 in the lock box 19 to fix the lock catch 18 and close the cover cylinder cover 16; when the medium is loaded and unloaded, the cover cylinder cover 16 is opened, and the cover cylinder cover 16 is closed after the loading and unloading and during the transportation.
The low-level inspection valve port connecting pipe 6-1, the high-level inspection valve port connecting pipe 7-1, the first remote control pipeline 13 and the second remote control pipeline 14 all extend out of the outer wall of the protective cover barrel 15.
The oil pressure distributor 11 includes an integrated structure: a flange seat and a cylindrical distribution cavity on the flange seat; the flange seat can be fixedly arranged on the manhole flange cover 2, and five threaded through holes are formed in the side wall of the cylindrical distribution cavity and used for being connected with a first loading and unloading valve 3, a second loading and unloading valve 4, a third loading and unloading valve 5, a first remote control pipeline 13 and a second remote control pipeline 14 respectively; the top of the cylindrical distribution cavity is provided with a threaded through hole for installing a first stop valve 20, the first stop valve 20 is communicated with a hand oil pump 12, and the hand oil pump 12 can control the opening and closing of the first loading and unloading valve 3, the second loading and unloading valve 4 and the third loading and unloading valve 5 through an oil pressure distributor 11.
The pressure gauge 8 is a vibration-resistant pressure gauge, the thermometer 9 is a bimetallic thermometer, and a thermometer protective tube is sleeved on the part of the thermometer 9 extending into the tank body 100.
The lower end of the pressure gauge 8 is connected into the tank body 100 through the second stop valve 21, so that the pressure gauge 8 can be conveniently replaced.
The manhole flange cover 2 is fixed on the manhole neck flange 1 through a stud and a nut.
In another embodiment, a pressure tanker is provided comprising a tank body 100 and further comprising the liquefied gas rail pressure tanker top refueling system of embodiment 1 disposed on top of the tank body 100.
The emergency cut-off operation process of the invention: if the valve needs to be closed urgently to interrupt the loading and unloading if the abnormality occurs, if an operator is on the roof walking board, a pressure relief handle on the hand-pressed oil pump can be pulled; if an operator is under the vehicle, the manual cut-off valves positioned at the middle lower parts of the tank bodies on the two sides of the vehicle can be opened; the two methods can discharge oil and release pressure in the hydraulic pipeline, so that the valve rod of the emergency cut-off valve rises, the medium passage is cut off, and the purpose of emergency cut-off is achieved.
The magnetic floating ball liquid level meter is of a conventional structure, and the using method comprises the following steps: before filling operation, checking whether each part of the liquid level meter is intact or not, and confirming that the operation can be carried out after the completion; before filling operation, the protective cover is unscrewed, the liquid level meter measuring rod is slightly pulled by hands until the liquid level meter measuring rod is magnetically coupled with the floating ball, and liquid level measurement can be carried out; during filling operation, the scale value at the plane position of the white nylon positioning sleeve of the liquid level meter connecting body and the liquid level meter measuring rod is visually observed, and the H-V table is checked according to the scale value, so that the volume of the filled liquid can be obtained; after the filling operation is finished, the measuring rod of the liquid level meter is slightly pushed downwards by a hand to be separated from the magnetic coupling of the floating ball and return to the initial position, and then the protective cover can be screwed on to finish the liquid level measuring operation; when the tank body is overhauled, in order to prevent the liquid level meter measuring rod from being damaged, the liquid level meter measuring rod can be drawn out of the guide pipe; taking down the white nylon positioning sleeve, strictly protecting the ferromagnetic element at the end part of the measuring rod, strictly prohibiting adsorbing any ferromagnetic material, and avoiding heating and impacting; when the tank car is repaired in large or middle scale, the anti-freezing liquid at the bottom in the guide pipe of the liquid level meter is replaced again, the weight is about 100 g, and the anti-freezing temperature is-40 ℃; the allowable error of the medium liquid level height in the measuring tank of the magnetic liquid level meter is 2.5 percent, and after the filling amount is rechecked by the rail weighbridge, the scale of the scale is corrected by adjusting the height of the adjusting nut on the liquid level meter.
The control method of the maximum filling weight comprises the following steps: firstly, the volume of the medium at the maximum filling amount can be obtained through the density according to the temperature data displayed by the thermometer; then, the height of the tank body displayed on the liquid level meter is obtained through a liquid level height and tank body volume comparison table; controlling this height is equivalent to controlling the maximum charge; after loading, the actual filling weight of the vehicle should be determined by the track scale.
The loading and unloading operation process of the invention is as follows:
opening a manhole cover cylinder cover, screwing down a valve cover of the emergency cut-off valve, connecting a gas-liquid phase connecting pipe and a liquid-phase connecting pipe, and closing a ball valve (or a cut-off valve) connected with the emergency cut-off valve; closing a pressure relief handle (rotating clockwise) of the hand-pressed oil pump, opening an oil way control valve, and pushing an injection handle of the hand-pressed oil pump to pressurize the hand-pressed oil pump; when the oil pressure is increased to about 3MPa, the working oil cylinder of the emergency cut-off valve starts to work (the movement of the oil cylinder piston and the rotation of the cam can be observed), and the action of the piston rod opens the emergency cut-off valve; the pilot valve clack in the emergency cut-off valve is opened, and after about half a minute, a slight sound is transmitted from the valve, which indicates that the main valve clack is also automatically opened, and at the moment, the ball valve can be opened for loading and unloading operation.
After the loading and unloading work is finished, a pressure relief handle on the hand-pressed oil pump is pulled (anticlockwise rotated) to relieve pressure, the emergency cut-off valve is automatically closed, the ball valve (or the cut-off valve) is immediately closed to keep sealing, the connecting pipe is removed, the valve cover of the emergency cut-off valve is additionally arranged, and the manhole cover cylinder cover is fastened tightly.
Claims (9)
1. The top charging and discharging system of the liquefied gas railway pressure tank car is characterized by comprising a manhole neck flange (1) arranged at the top of a tank car body (100) and a manhole flange cover (2) arranged on the manhole neck flange (1), the device also comprises a first loading and unloading valve (3), a second loading and unloading valve (4), a third loading and unloading valve (5), a low-level check valve (6) and a high-level check valve (7) which are arranged on the manhole flange cover (2) and penetrate through the manhole flange cover (2) to extend into the tank body (100), a pressure gauge (8) and a temperature gauge (9) which are arranged on the manhole flange cover (2) and can be communicated into the tank body (100), a magnetic floating ball liquid level meter (10) which is arranged on the manhole flange cover (2), has the bottom extending into the tank body (100) and is sealed at the bottom, and an oil pressure distributor (11) and a hand oil pump (12) which are arranged on the manhole flange cover (2);
the inlet ends of the first loading and unloading valve (3) and the second loading and unloading valve (4) are respectively connected with a liquid inlet and outlet pipeline, the two liquid inlet and outlet pipelines extend to the bottom in the tank body (100), and the outlet ends of the first loading and unloading valve (3) and the second loading and unloading valve (4) are provided with liquid inlet and outlet flange interfaces to be connected with liquid pipelines of a loading and unloading station; an inlet of the third loading and unloading valve (5) is communicated with the inside of the tank body (100), and an outlet end of the third loading and unloading valve (5) is provided with a gas flange interface to be connected with a gas pipeline of a loading and unloading liquid station;
the inlet end of the low-level check valve (6) is connected with a low-level check inner pipe which extends to the bottom in the tank body (100), and the outlet end of the low-level check valve (6) is provided with a low-level check valve port connecting pipe (6-1); the inlet end of the high-level inspection valve (7) is connected with a high-level inspection inner pipe, the high-level inspection inner pipe extends to the position of the maximum allowable filling amount in the tank body (100), and the outlet end of the high-level inspection valve (7) is provided with a high-level inspection valve port connecting pipe (7-1);
the hand oil pump (12) is communicated to the oil pressure distributor (11), and the oil pressure distributor (11) is respectively communicated with the first loading and unloading valve (3), the second loading and unloading valve (4), the third loading and unloading valve (5), the first remote control pipeline (13) and the second remote control pipeline (14); first remote control pipeline (13) and second remote control pipeline (14) are symmetrically arranged on two sides of the outside of the tank body (100) and extend to the middle lower part of the tank body (100), and manual cut-off valves are respectively arranged at the tail ends of the first remote control pipeline (13) and the second remote control pipeline (14).
2. The liquefied gas railway pressure tank car top charging and discharging system as claimed in claim 1, wherein a protective cover cylinder (15) is provided on the manhole flange cover (2), and a cover cylinder cover (16) which can be opened and closed is provided on the protective cover cylinder (15); a closed protection cavity is enclosed by the protection cover cylinder (15), the cover cylinder cover (16) and the manhole flange cover (2); the first loading and unloading valve (3), the second loading and unloading valve (4), the third loading and unloading valve (5), the low-level check valve (6), the high-level check valve (7), the pressure gauge (8), the thermometer (9), the upper parts of the magnetic floating ball liquid level meter (10), the oil pressure distributor (11) and the hand oil pump (12) are all located in the closed protection cavity.
3. The liquefied gas railway pressure tank car top refueling system as claimed in claim 2 wherein the shield canister (15) is bolted to the manhole flange cover (2); one end of the cover cylinder cover (16) is hinged with the protective cover cylinder (15), and the other end of the cover cylinder cover (16) is provided with a handle (17) and a lock catch (18); the lower end of the lock catch (18) is provided with a lock box (19), and the lock box (19) is arranged on the outer side wall of the protective cover barrel (15); the lock catch (18) can extend into the lock box (19) and can be locked at the lower end of the lock catch (18) in the lock box (19) to fix the lock catch (18) so as to close the cover cylinder cover (16); when the medium is loaded and unloaded, the cover cylinder cover (16) is opened, and the cover cylinder cover (16) is closed after loading and unloading and during transportation.
4. The liquefied gas rail pressure tanker top loading and draining system according to claim 2, wherein the low level check valve port connection (6-1), the high level check valve port connection (7-1), the first remote control line (13) and the second remote control line (14) all extend out of the outer wall of the protective cover barrel (15).
5. The liquefied gas rail pressure tank car top charging and discharging system as claimed in claim 1, wherein the oil pressure distributor (11) comprises an integrated structure of: a flange seat and a cylindrical distribution cavity on the flange seat; the flange seat can be fixedly arranged on a manhole flange cover (2), and five threaded through holes are formed in the side wall of the cylindrical distribution cavity and used for being connected with a first loading and unloading valve (3), a second loading and unloading valve (4), a third loading and unloading valve (5), a first remote control pipeline (13) and a second remote control pipeline (14) respectively; the top of the cylindrical distribution cavity is provided with a threaded through hole for installing a first stop valve (20), the first stop valve (20) is communicated with the hand-operated oil pump (12), and the hand-operated oil pump (12) can control the opening and closing of the first loading and unloading valve (3), the second loading and unloading valve (4) and the third loading and unloading valve (5) through an oil pressure distributor (11).
6. The liquefied gas railway pressure tank car top charging and discharging system as claimed in claim 1, wherein the pressure gauge (8) is a shock-resistant pressure gauge, the thermometer (9) is a bimetal thermometer, and a thermometer protective tube is sleeved on a part of the thermometer (9) extending into the tank body (100).
7. Top filling and draining system of liquefied gas railway pressure tank cars according to claim 1, characterized in that the lower end of the pressure gauge (8) is connected into the tank (100) through a second stop valve (21).
8. The liquefied gas railway pressure tank car top refueling system as claimed in claim 1, wherein the manhole flange cover (2) is fixed to the manhole neck flange (1) by means of studs and nuts.
9. A pressure tanker, characterized by comprising a tank body (100) and further comprising a top refueling system for a liquefied gas rail pressure tanker according to any of claims 1 to 8, the top refueling system being provided on top of the tank body (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011001050.3A CN112319526A (en) | 2020-09-22 | 2020-09-22 | Top adding and discharging system of liquefied gas railway pressure tank car and pressure tank car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011001050.3A CN112319526A (en) | 2020-09-22 | 2020-09-22 | Top adding and discharging system of liquefied gas railway pressure tank car and pressure tank car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112319526A true CN112319526A (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011001050.3A Pending CN112319526A (en) | 2020-09-22 | 2020-09-22 | Top adding and discharging system of liquefied gas railway pressure tank car and pressure tank car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112319526A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024108693A1 (en) * | 2022-11-22 | 2024-05-30 | 中车西安车辆有限公司 | Diesel tank truck for railway |
| WO2024108692A1 (en) * | 2022-11-22 | 2024-05-30 | 中车西安车辆有限公司 | Railway tank car tank body having protective apparatus and railway tank car |
-
2020
- 2020-09-22 CN CN202011001050.3A patent/CN112319526A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024108693A1 (en) * | 2022-11-22 | 2024-05-30 | 中车西安车辆有限公司 | Diesel tank truck for railway |
| WO2024108692A1 (en) * | 2022-11-22 | 2024-05-30 | 中车西安车辆有限公司 | Railway tank car tank body having protective apparatus and railway tank car |
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