CN114321701A

CN114321701A - Liquid ammonia holding vessel

Info

Publication number: CN114321701A
Application number: CN202210036203.0A
Authority: CN
Inventors: 陈承明
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-04-12

Abstract

The invention belongs to the field of liquid ammonia storage, and particularly relates to a liquid ammonia storage tank which comprises a tank body, wherein a shell is fixedly arranged above the tank body, a tank cap is covered on the shell, a control part is arranged in the shell, the control part comprises a switching module arranged in the tank cap, a first pressure relief module for preliminary treatment is arranged on one side in the shell, a second pressure relief module for further worsening the treatment condition is arranged on the other side in the shell, and a probe tube extending into the tank body is connected below the switching module.

Description

Liquid ammonia holding vessel

Technical Field

The invention belongs to the field of liquid ammonia storage, and particularly relates to a liquid ammonia storage tank.

Background

Liquid ammonia, also known as anhydrous ammonia, is a colorless liquid with a strong pungent odor. Ammonia is an important chemical raw material, and for convenience in transportation and storage, gaseous ammonia gas is usually pressurized or cooled to obtain liquid ammonia. Liquid ammonia is easy to dissolve in water, ammonium ions and hydroxide ions are formed after the liquid ammonia is dissolved in water, and the solution is alkaline. The liquid ammonia is often stored in a pressure-resistant steel cylinder or a steel tank, and cannot coexist with acetaldehyde, acrolein, boron and the like. Liquid ammonia is widely used in industry, has corrosiveness and is easy to volatilize, so that the chemical accident rate is high.

The following problems exist in the prior art:

the filling amount of the liquid ammonia steel cylinder which is burst is mostly higher than a specified value and is in an approximately full liquid state, so that no gap is reserved for excessively volatilized ammonia gas to cause explosion.

Secondly, the existing common liquid ammonia storage tank does not effectively treat the excessive volatile ammonia gas, and the excessive ammonia gas is partially directly removed by adopting a pressure release valve, so that the ammonia gas poisoning of personnel is easily caused.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a liquid ammonia storage tank which can avoid excessive filling of liquid ammonia and prevent excessive volatilization of the liquid ammonia.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a liquid ammonia holding vessel, includes a jar body, jar body top has set firmly the casing, be stamped the tank cap on the casing, be equipped with control unit in the casing, control unit is including locating the switching module in the tank cap, one side is equipped with the first pressure release module of preliminary treatment in the casing, the opposite side is equipped with the second pressure release module that the handling condition further worsened in the casing, switching module below has connect and has stretched into the internal spy pipe of jar.

Preferably, the tank cap is internally provided with a mounting ring fixedly connected above the shell, and the tank cap moves up and down outside the mounting ring.

Preferably, a connecting block fixedly connected to the shell is arranged at the center of the mounting ring, an air inlet and outlet conduit is fixedly arranged on the connecting block, and an inlet and an outlet are formed in the air inlet and outlet conduit.

Preferably, the switching module comprises a valve body rotatably arranged in the air inlet and outlet conduit, a valve core is arranged in the valve body, a valve body control handle is fixedly arranged on the upper side of the valve body, a threaded ring connected with the valve body control handle is rotatably arranged on the cylindrical surface of the valve body, a thread block is arranged on one side of the thread ring away from the inlet and the outlet, a mandril is fixedly connected below the thread block, the top rod slides up and down in the connecting block, the thread ring is engaged with the thread block for transmission, the connecting block is provided with a guide chute, a guide slide block is arranged in the guide slide groove in a sliding way, the guide slide block is fixedly connected to the ejector rod, a connecting through hole is formed in the connecting block, a limiting block fixedly connected with the tank body is arranged below the connecting through hole, a main air guide hole is arranged in the limiting block, the probe tube on the lower side of the limiting block is fixedly provided with a top block, the top block is provided with a branch air guide hole, and the lower side of the top block is fixedly connected with a sliding rod.

Preferably, the bottom of the probe tube is provided with a probe tube opening, the bottom of the probe tube is fixedly provided with a baffle, a floating block is arranged on the lower side in the probe tube in a sliding manner, a fixed block is fixedly arranged on the upper side of the floating block, a sliding sleeve is fixedly connected onto the fixed block, the sliding rod slides in the sliding sleeve, and a sliding rod spring is arranged between the sliding rod and the sliding sleeve.

Preferably, first pressure release module is including setting firmly the low pressure valve on the jar body, the activated carbon layer has set firmly in the casing of low pressure valve upside, activated carbon layer upside has set firmly the diaphragm, it has the choke valve to open on the diaphragm, the choke valve upside is equipped with the warning whistle, the warning whistle including set firmly in the warning whistle import of choke valve upside, form the resonance chamber between diaphragm and the casing, the warning whistle import is kept away from connecting block one side and is set firmly the guide plate, the guide plate is kept away from opening on the jar body of connecting block one side and is had the export of warning whistle, the roll is equipped with the bobble in the resonance chamber.

Preferably, the second pressure release module is including setting firmly the high pressure valve on the jar body, the reservoir bed has set firmly in the casing of high pressure valve upside, the collar upside is equipped with the baffle of taking the check valve, the baffle upside of taking the check valve has set firmly the chemical reaction layer, the baffle of taking the through-hole has set firmly on the chemical reaction layer upside.

Preferably, a warning whistle with sharper sound is arranged above the second pressure relief module.

Has the advantages that:

1. by utilizing the control module, a certain space can be reserved at the upper part of the tank body to avoid danger.

2. The first pressure relief module is used for discharging excessive ammonia gas, and simultaneously, whistle is given to attract the attention of workers, so that the workers can be maintained in time.

3. The second pressure relief module is used for discharging excessive ammonia gas and giving out sharp whistle to warn approaching personnel so as to avoid poisoning accidents.

Drawings

FIG. 1 is a perspective view of a solid of the present invention

FIG. 2 is a top view of the present invention

FIG. 3 is a sectional view taken along line A-A in FIG. 2

FIG. 4 is a partial enlarged view of the portion B in FIG. 3

FIG. 5 is a partial enlarged view of the portion C in FIG. 4

In the figure: 11. a tank body; 12. a housing; 13. a can cap; 14. a control component; 15. a first pressure relief module; 16. a second pressure relief module; 17. a switching module; 18. a probe tube; 19. a mounting ring; 20. connecting blocks; 21. an air inlet and outlet conduit; 22. a valve body control handle; 23. a valve body; 24. a valve core; 25. an inlet and an outlet; 26. a threaded ring; 27. a thread block; 28. a top rod; 29. a guide chute; 30. a guide slider; 31. a connecting through hole; 32. a limiting block; 33. leading the air holes; 34. a top block; 35. air guide holes are distributed; 36. a slide bar; 37. a sliding sleeve; 38. a slide rod spring; 39. a fixed block; 40. a floating block; 41. a baffle plate; 42. a probe port; 43. a low pressure valve; 44. a high pressure valve; 45. an activated carbon layer; 46. a transverse plate; 47. a throttle valve; 48. a one-way valve; 49. a water storage layer; 50. a resonance chamber; 51. a chemical reaction layer; 52. the warning whistle is arranged at the inlet; 53. a warning whistle outlet; 54. a baffle; 55. a pellet; 56. a partition plate;

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

With reference to fig. 1-5, a liquid ammonia storage tank comprises a tank body 11, a shell 12 is fixedly arranged above the tank body 11, a tank cap 13 is covered on the shell 12, a control part 14 is arranged in the shell 12, the control part 14 comprises a switching module 17 arranged in the tank cap 13, a first pressure relief module 15 for preliminary treatment is arranged on one side in the shell 12, a second pressure relief module 16 for further worsening of treatment conditions is arranged on the other side in the shell 12, and a probe 18 extending into the tank body 11 is connected below the switching module 17.

Further, a mounting ring 19 fixedly connected above the shell 12 is arranged in the tank cap 13, and the tank cap 13 moves up and down outside the mounting ring 19.

Furthermore, a connecting block 20 fixedly connected to the housing 12 is arranged at the center of the mounting ring 19, an air inlet and outlet duct 21 is fixedly arranged on the connecting block 20, and an inlet and outlet 25 is arranged in the air inlet and outlet duct 21.

Further, the switching module 17 includes a valve body 23 rotatably disposed in the air inlet/outlet conduit 21, a valve core 24 is disposed in the valve body 23, a valve body control handle 22 is fixedly disposed on an upper side of the valve body 23, a threaded ring 26 connected to the valve body control handle 22 is rotatably disposed on a cylindrical surface of the valve body 23, a threaded block 27 is disposed on a side of the threaded ring 26 away from the inlet/outlet 25, a push rod 28 is fixedly connected below the threaded block 27, the push rod 28 slides up and down in the connecting block 20, the threaded ring 26 and the threaded block 27 are engaged for transmission, a guide chute 29 is disposed on the connecting block 20, a guide slider 30 is slidably disposed in the guide chute 29, the guide slider 30 is fixedly connected to the push rod 28, a connecting through hole 31 is disposed in the connecting block 20, a limiting block 32 fixedly connected to the tank 11 is disposed below the connecting through hole 31, a main air hole 33 is disposed in the limiting block 32, a top block 34 is fixedly disposed on the probe 18 on a lower side of the limiting block 32, a branch air hole 35 is disposed on the top block 34, a slide bar 36 is attached to the underside of the top block 34.

Furthermore, a probe opening 42 is formed in the bottom of the probe 18, a baffle 41 is fixedly arranged at the bottom of the probe 18, a floating block 40 is slidably arranged at the lower side in the probe 18, a fixed block 39 is fixedly arranged at the upper side of the floating block 40, a sliding sleeve 37 is fixedly connected to the fixed block 39, the sliding rod 36 slides in the sliding sleeve 37, and a sliding rod spring 38 is arranged between the sliding rod 36 and the sliding sleeve 37.

Further, the first pressure relief module 15 includes a low pressure valve 43 fixedly arranged on the tank body 11, an activated carbon layer 45 is fixedly arranged in the casing 12 on the upper side of the low pressure valve 43, a transverse plate 46 is fixedly arranged on the upper side of the activated carbon layer 45, a throttle valve 47 is arranged on the transverse plate 46, a warning whistle is arranged on the upper side of the throttle valve 47, the warning whistle includes a warning whistle inlet 52 fixedly arranged on the upper side of the throttle valve 47, a resonance cavity 50 is formed between the transverse plate 46 and the casing 12, a guide plate 54 is fixedly arranged on the side, far away from the connecting block 20, of the tank body 11 on the side, far away from the connecting block 20, of the guide plate 54, a warning whistle outlet 53 is arranged, and a small ball 55 is arranged in the resonance cavity 50 in a rolling manner.

Further, the second pressure relief module 16 includes a high pressure valve 44 fixed on the tank 11, a water storage layer 49 is fixed in the housing 12 above the high pressure valve 44, a partition 56 with a check valve is arranged above the mounting ring 19, a chemical reaction layer 51 is fixed on the upper side of the partition 56 with the check valve, and a partition 56 with a through hole is fixed on the upper side of the chemical reaction layer 51.

Further, a warning whistle with sharper sound is arranged above the second pressure relief module 16.

Principle of operation

When the storage tank is used, the tank cap 13 is opened firstly, the air inlet and outlet conduit 21 is butted with corresponding equipment, the valve body control handle 22 is screwed, the valve body control handle 22 drives the valve body 23 to rotate, the valve body 23 drives the valve core 24 to rotate, and the valve core 24 is driven to face the inlet and outlet 25, so that the inlet and outlet 25 is communicated with the connecting through hole 31.

The valve body control handle 22 rotates to drive the threaded ring 26 to rotate, the threaded ring 26 rotates to be meshed with the threaded block 27 for transmission, the threaded block 27 cannot rotate along with the guide sliding block 30 due to the fact that the guide sliding block 30 is clamped, the threaded ring 26 rotates to drive the threaded block 27 to move downwards, the threaded block 27 drives the ejector rod 28 to move downwards, the ejector rod 28 drives the guide sliding block 30 to slide in the guide sliding groove 29, the ejector rod 28 jacks the ejector block 34, the connecting through hole 31 can be communicated with the probe tube 18 after passing through the main air guide hole 33 and the branch air guide hole 35, and when the ejector block 34 moves downwards, the sliding rod 36 is driven to slide into the sliding sleeve 37 to compress the sliding rod spring 38.

After the inlet and outlet 25 is communicated with the interior of the tank body 11, the tank body 11 is firstly vacuumized, then liquid ammonia is filled, the liquid ammonia flows into the probe tube 18 after passing through the inlet and outlet 25, the valve core 24 and the connecting through hole 31, then the liquid ammonia flows out through the sliding rod 36 and is continuously filled into the tank body 11, when the liquid ammonia reaches the position of the baffle 41, the liquid ammonia drives the floating blocking block 40 to float upwards until the probe tube opening 42 is blocked, the liquid ammonia cannot be filled continuously after the probe tube opening 42 is blocked, the phenomenon that excessive liquid ammonia is filled by mistake can be prevented, a certain space is reserved on the upper portion of the tank body 11 to avoid danger, because the saturated vapor pressure of the liquid ammonia is increased along with the temperature rise, the liquid ammonia is suitable for expanding along with the temperature rise, although the liquid expansion coefficient is small, the liquid has incompressibility, the air gap is too small, and the pressure is increased rapidly due to the temperature rise. Resulting in failure of the can 11.

After filling, the valve body control handle 22 is screwed, so that the valve body 23 closes the inlet and outlet 25, the threaded ring 26 drives the threaded block 27 to reset, the sliding rod spring 38 pushes the sliding rod 36 upwards to attach the top block 34 to the limiting block 32, the communication between the inside of the tank body 11 and the connecting through hole 31 is sealed, and a layer of sealing is added to ensure safety.

When the device is used, the air inlet and outlet conduit 21 is connected to a using device, the valve body control handle 22 is screwed, the valve body control handle 22 is continuously screwed after the valve core 24 is aligned with the inlet and outlet 25 and the connecting through hole 31, the valve body 23 stops rotating, the valve body control handle 22 drives the threaded ring 26 to continuously rotate and drives the threaded block 27 to continuously move downwards, the threaded ring 26 does not completely wrap the valve body 23, the valve core 24 can still be vacated when the threaded ring 26 rotates to the limit position, the ejector rod 28 drives the ejector block 34 to continuously move downwards, the ejector block 34 continuously pushes the sliding rod 36, the sliding rod 36 presses the sliding rod spring 38, the sliding rod spring 38 presses the sliding sleeve 37, the sliding sleeve 37 presses the fixed block 39, the fixed block 39 presses the floating block 40, when the sliding rod spring 36 presses the sliding rod spring 38 to offset buoyancy force and push the floating block 40, the interior of the tank 11 can be restored to be communicated with the inlet and outlet 25, so that the floating block 40 in the tank 11 can be prevented from always blocking the probe pipe orifice 42 when the tank is full, after use, the valve body control handle 22 is screwed to close the device.

When not using during daily storage, in order to avoid the liquid ammonia in the jar body 11 excessively to volatilize into the ammonia, cause the inside atmospheric pressure of jar body 11 too big to initiate the explosion, too high atmospheric pressure backs down low pressure valve 43 and gets into activated carbon layer 45, gets into warning whistle import 52 through choke valve 47 after the absorption of activated carbon layer 45, gets into in resonance chamber 50 through warning whistle import 52 and promotes the bobble 55 and make a sound, sends out the whistle sound when being discharged by warning whistle export 53 and arouses the workman's attention, the maintenance of coming.

When the liquid ammonia in the tank body 11 changes violently and the ammonia production speed is too high, the redundant ammonia cannot pass through the throttle valve 47, the high-pressure valve 44 is pushed open after short-term gathering, the ammonia enters the water storage layer 49 through the one-way valve 48 to form ammonia water, the ammonia water enters the chemical reaction layer 51 after the water storage layer 49 is reacted and saturated to react, the ammonia water enters the sharp warning whistle above the second pressure relief module 16 when excessive residues exist after the chemical reaction layer 51 reacts, the harsh whistle is given out to warn workers, excessive ammonia poisoning is prevented from being inhaled when approaching, and the problem is treated before protection is done.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a liquid ammonia holding vessel, includes a jar body (11), its characterized in that, jar body (11) top has set firmly casing (12), be stamped tank cap (13) on casing (12), be equipped with controlling means (14) in casing (12), controlling means (14) are including locating switching module (17) in tank cap (13), one side is equipped with first pressure release module of preliminary treatment (15) in casing (12), the opposite side is equipped with second pressure release module (16) that the handling condition further worsened in casing (12), switching module (17) below has connect and has stretched into exploring pipe (18) in jar body (11).

2. A liquid ammonia storage tank according to claim 1, characterized in that a mounting ring (19) is provided in the tank cap (13) and is attached to the housing (12), and the tank cap (13) is moved up and down outside the mounting ring (19).

3. A liquid ammonia storage tank according to claim 2, wherein a connecting block (20) fixed to the housing (12) is provided at the center of the mounting ring (19), a gas inlet/outlet pipe (21) is fixed to the connecting block (20), and an inlet/outlet (25) is provided in the gas inlet/outlet pipe (21).

4. The liquid ammonia storage tank of claim 3, wherein the switching module (17) comprises a valve body (23) rotatably disposed in the gas inlet/outlet conduit (21), a valve core (24) is disposed in the valve body (23), a valve body control handle (22) is fixedly disposed on an upper side of the valve body (23), a threaded ring (26) connected to the valve body control handle (22) is rotatably disposed on a cylindrical surface of the valve body (23), a threaded block (27) is disposed on a side of the threaded ring (26) away from the inlet/outlet (25), a push rod (28) is fixedly connected below the threaded block (27), the push rod (28) slides up and down in the connecting block (20), the threaded ring (26) and the threaded block (27) are in meshing transmission, a guide chute (29) is disposed on the connecting block (20), a guide slider (30) is slidably disposed in the guide chute (29), and the guide slider (30) is fixedly connected to the push rod (28), connecting hole (31) have been seted up in connecting block (20), connecting hole (31) below is equipped with and links firmly limiting block (32) on jar body (11), it has main air guide hole (33) to seted up in limiting block (32), set firmly kicking block (34) on probe (18) of limiting block (32) downside, it has branch air guide hole (35) to open on kicking block (34), kicking block (34) downside has linked firmly slide bar (36).

5. The liquid ammonia storage tank of claim 4, wherein the bottom of the probe tube (18) is provided with a probe tube opening (42), the bottom of the probe tube (18) is fixedly provided with a baffle (41), the lower side in the probe tube (18) is provided with a floating block (40) in a sliding manner, the upper side of the floating block (40) is fixedly provided with a fixed block (39), the fixed block (39) is fixedly connected with a sliding sleeve (37), the sliding rod (36) slides in the sliding sleeve (37), and a sliding rod spring (38) is arranged between the sliding rod (36) and the sliding sleeve (37).

6. The liquid ammonia storage tank of claim 5, wherein the first pressure relief module (15) comprises a low pressure valve (43) fixedly arranged on the tank body (11), an activated carbon layer (45) is fixedly arranged in the shell (12) on the upper side of the low pressure valve (43), a transverse plate (46) is fixedly arranged on the upper side of the activated carbon layer (45), a throttle valve (47) is arranged on the transverse plate (46), a warning whistle is arranged on the upper side of the throttle valve (47), the warning whistle comprises a warning whistle inlet (52) fixedly arranged on the upper side of the throttle valve (47), a resonance cavity (50) is formed between the transverse plate (46) and the shell (12), a guide plate (54) is fixedly arranged on the side, far away from the connecting block (20), of the warning whistle inlet (52), and a warning whistle outlet (53) is arranged on the tank body (11) on the side, far away from the connecting block (20), of the guide plate (54), a small ball (55) is arranged in the resonance cavity (50) in a rolling manner.

7. The liquid ammonia storage tank of claim 6, wherein the second pressure relief module (16) comprises a high pressure valve (44) fixedly arranged on the tank body (11), a water storage layer (49) is fixedly arranged in the housing (12) on the upper side of the high pressure valve (44), a partition plate (56) with a one-way valve is arranged on the upper side of the mounting ring (19), a chemical reaction layer (51) is fixedly arranged on the upper side of the partition plate (56) with the one-way valve, and a partition plate (56) with a through hole is fixedly arranged on the upper side of the chemical reaction layer (51).

8. The liquid ammonia storage tank of claim 7, wherein a warning whistle with a sharper sound is arranged above the second pressure relief module (16).