CN220956836U - Cold box J-T valve with stable opening adjustment of liquefied natural gas - Google Patents
Cold box J-T valve with stable opening adjustment of liquefied natural gas Download PDFInfo
- Publication number
- CN220956836U CN220956836U CN202322987749.7U CN202322987749U CN220956836U CN 220956836 U CN220956836 U CN 220956836U CN 202322987749 U CN202322987749 U CN 202322987749U CN 220956836 U CN220956836 U CN 220956836U
- Authority
- CN
- China
- Prior art keywords
- valve
- fixedly connected
- cold box
- rod
- hole
- 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
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a cold box J-T valve with stable liquefied natural gas opening degree adjustment, which relates to the technical field of valves and comprises a valve body, wherein an upper flange of the valve body is connected with a valve cover, a channel is formed in the valve cover, a valve rod is slidably arranged in the channel, one end of the valve rod penetrates through the upper surface of the valve body and is fixedly connected with a valve clack, the valve clack is matched with the valve body, the upper end of the valve cover is fixedly connected with a mounting block, a first through hole is formed in the mounting block, and a screw rod is rotatably connected in the first through hole. According to the utility model, the deflector rod is stirred, the hand wheel is rotated, the deflector rod is loosened, the spring is in a compressed state at the moment, the fixed block drives the screw rod to rotate, and the spring rebounds after the spring rotates to a certain angle, so that the trapezoid limiting block moves into the appointed limiting groove, and the opening degree of the J-T valve is not too large or too small.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a cold box J-T valve with stable liquefied natural gas opening degree adjustment.
Background
The cold box adopts a single mixed refrigerant flow of two-stage separation and three-stage throttling, the refrigerating capacity of different temperature levels is obtained through throttling and depressurization of the J-T valve, and the J-T valve can directly influence the operation working condition of the refrigerant compressor while controlling the temperatures of all stages of the cold box.
However, the existing J-T valve has the defects that the opening degree is too large, the load of the compressor is increased, the opening degree is too small, the compressor is surging, the opening degree of the finished product valve is too large, the temperature of the cold box is rapidly increased, the load of the compressor is increased, the compressor is stopped in an interlocking way beyond rated current, and the intensity of the cold box heat exchanger is damaged.
Disclosure of utility model
The present utility model has been made in view of the above-mentioned problems with the conventional cold box J-T valve in which lng opening degree adjustment is stable.
Therefore, the utility model aims to provide the cold box J-T valve with stable opening adjustment of the liquefied natural gas, which solves the problems that the excessive opening of the J-T valve can cause the increase of the load of a compressor, the insufficient opening can cause the surging of the compressor, and the excessive opening of a finished product valve can cause the rapid increase of the temperature of the cold box to increase the load of the compressor.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model provides a stable cold box J-T valve is adjusted to liquefied natural gas aperture, includes the valve body, flange joint has the valve gap on the valve body, the passageway has been seted up to the inside of valve gap, the inside slip of passageway is provided with the valve rod, the upper surface and fixedly connected with valve clack of valve rod are run through to the one end of valve rod, valve clack and valve body assorted, the upper end fixedly connected with installation piece of valve gap, the first through-hole has been seted up to the installation piece, the inside rotation of first through-hole is connected with the lead screw, the internal thread hole has been seted up to the one end of valve rod, the lead screw thread cup joints in the inside of internal thread hole, the one end fixedly connected with fixed block of lead screw, the cavity has been seted up to the inside of installation piece, the inside of cavity is provided with fixed establishment, the fixed block is fixed through fixed establishment.
Preferably, the fixing mechanism comprises a trapezoid limiting block, a spring and a deflector rod, the second through hole is formed in the upper surface of the inside of the cavity, the trapezoid limiting block is slidably arranged in the second through hole, the spring is fixedly connected to the lower surface of the trapezoid limiting block, a strip-shaped hole is formed in one side of the cavity, the deflector rod is slidably arranged in the strip-shaped hole, and one end of the deflector rod is fixedly connected to one side of the trapezoid limiting block.
Preferably, both ends of the channel are provided with sliding grooves, the inside of each sliding groove is provided with sliding blocks in a sliding manner, and the two sliding blocks are respectively and fixedly connected to both sides of the valve rod.
Preferably, the lower surface of the fixed block is fixedly connected with a plurality of limit grooves, and each limit groove is matched with the trapezoid limiting block.
Preferably, the outer surface of the fixed block is fixedly connected with a hand wheel.
Preferably, a sealing gasket is arranged between the valve body and the valve cover.
In the technical scheme, the utility model has the technical effects and advantages that:
1. According to the utility model, the deflector rod is stirred, the hand wheel is rotated, the deflector rod is loosened at the same time, the spring is in a compressed state at the moment, the fixed block drives the screw rod to rotate, and the spring rebounds after rotating to a certain angle, so that the trapezoid limiting block moves into the appointed limiting groove, and the opening of the J-T valve is not too large or too small.
2. According to the utility model, the sliding blocks in the two sliding grooves are arranged, and the two sliding blocks can play a limiting role, so that the valve rod is prevented from rotating along with the screw rod when the screw rod rotates.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of FIG. 1 of the present utility model;
Fig. 3 is an enlarged schematic view of the portion a of fig. 2 according to the present utility model.
Reference numerals illustrate:
1. A valve body; 2. a valve cover; 3. a valve stem; 4. a valve flap; 5. a mounting block; 6. a screw rod; 7. a fixed block; 8. a trapezoid limiting block; 9. a spring; 10. a deflector rod; 11. a slide block; 12. a hand wheel; 13. and a sealing gasket.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.
The embodiment of the utility model discloses a cold box J-T valve with stable opening adjustment of liquefied natural gas.
The utility model provides a cold box J-T valve with stable liquefied natural gas opening adjustment, which is shown in figures 1-3, and comprises a valve body 1, wherein an upper flange of the valve body 1 is connected with a valve cover 2, a channel is formed in the valve cover 2, a valve rod 3 is slidably arranged in the channel, one end of the valve rod 3 penetrates through the upper surface of the valve body 1 and is fixedly connected with a valve clack 4, the valve clack 4 is matched with the valve body 1, the upper end of the valve cover 2 is fixedly connected with a mounting block 5, a first through hole is formed in the mounting block 5, a screw rod 6 is rotatably connected in the first through hole, one end of the valve rod 3 is provided with an internal threaded hole, the screw rod 6 is sleeved in the internal of the internal threaded hole, one end of the screw rod 6 is fixedly connected with a fixing block 7, a cavity is formed in the mounting block 5, a fixing mechanism is arranged in the cavity, and the fixing block 7 is fixed through the fixing mechanism.
When the fixed block 7 rotates to a certain angle, the fixed block 7 can be fixed through the fixing mechanism, so that the opening degree of the J-T valve is not too large or too small, and the J-T valve can be safely used.
In order to fix the J-T valve, as shown in fig. 2-3, the fixing mechanism comprises a trapezoid limiting block 8, a spring 9 and a deflector rod 10, a second through hole is formed in the upper surface of the inside of the cavity, the trapezoid limiting block 8 is slidably arranged in the second through hole, the spring 9 is fixedly connected to the lower surface of the trapezoid limiting block 8, a strip-shaped hole is formed in one side of the cavity, the deflector rod 10 is slidably arranged in the strip-shaped hole, one end of the deflector rod 10 is fixedly connected to one side of the trapezoid limiting block 8, a hand wheel 12 is fixedly connected to the outer surface of the fixing block 7, a plurality of limiting grooves are fixedly connected to the lower surface of the fixing block 7, and each limiting groove is matched with the trapezoid limiting block 8.
The driving lever 10 is shifted, the hand wheel 12 is rotated, the driving lever 10 is loosened, the spring 9 is in a compressed state at the moment, the fixed block 7 drives the screw rod 6 to rotate, and the spring 9 rebounds after the spring rotates to a certain angle, so that the trapezoid limiting block 8 moves to the inside of the appointed limiting groove, and the opening degree of the J-T valve cannot be too large or too small.
In order to prevent the valve rod 3 from rotating when the screw rod 6 rotates, as shown in fig. 2, sliding grooves are formed in two ends of the channel, sliding blocks 11 are slidably arranged in the two sliding grooves, and the two sliding blocks 11 are fixedly connected to two sides of the valve rod 3 respectively.
The two sliding blocks 11 can play a limiting role, so that the valve rod 3 is prevented from rotating.
Finally, in order to improve the tightness of the device, as shown in fig. 1-2, a gasket 13 is provided between the valve body 1 and the valve cover 2.
The air tightness of the device can be improved by the sealing gasket 13.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
Claims (6)
1. The utility model provides a cold box J-T valve that liquefied natural gas aperture is adjusted steadily, includes valve body (1), its characterized in that, put flange joint on valve body (1) has valve gap (2), the passageway has been seted up to the inside of valve gap (2), the inside slip of passageway is provided with valve rod (3), the upper surface and fixedly connected with valve clack (4) that valve body (1) were run through to the one end of valve rod (3), valve clack (4) and valve body (1) assorted, the upper end fixedly connected with installation piece (5) of valve gap (2), the first through-hole has been seted up to installation piece (5), the inside rotation of first through-hole is connected with lead screw (6), the internal thread hole has been seted up to the one end of valve rod (3), the inside of lead screw (6) threaded socket in the internal thread hole, the one end fixedly connected with fixed block (7) of lead screw (6), the cavity has been seted up to the inside of installation piece (5), the inside of cavity is provided with fixed establishment, fixed block (7) are fixed through fixed establishment.
2. The cold box J-T valve with stable liquefied natural gas opening adjustment according to claim 1, wherein the fixing mechanism comprises a trapezoid limiting block (8), a spring (9) and a deflector rod (10), a second through hole is formed in the upper surface of the inside of the cavity, the trapezoid limiting block (8) is slidably arranged in the second through hole, the spring (9) is fixedly connected to the lower surface of the trapezoid limiting block (8), a bar-shaped hole is formed in one side of the cavity, the deflector rod (10) is slidably arranged in the bar-shaped hole, and one end of the deflector rod (10) is fixedly connected to one side of the trapezoid limiting block (8).
3. The cold box J-T valve with stable liquefied natural gas opening degree adjustment according to claim 1, wherein sliding grooves are formed in two ends of the channel, sliding blocks (11) are slidably arranged in two sliding grooves, and the two sliding blocks (11) are fixedly connected to two sides of the valve rod (3) respectively.
4. The cold box J-T valve with stable liquefied natural gas opening degree adjustment according to claim 1, wherein a plurality of limit grooves are fixedly connected to the lower surface of the fixed block (7), and each limit groove is matched with the trapezoid limit block (8).
5. The cold box J-T valve with stable liquefied natural gas opening degree adjustment according to claim 1, wherein the outer surface of the fixed block (7) is fixedly connected with a hand wheel (12).
6. Cold box J-T valve with stable lng opening adjustment according to claim 1, characterized in that a gasket (13) is arranged between the valve body (1) and the valve cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322987749.7U CN220956836U (en) | 2023-11-07 | 2023-11-07 | Cold box J-T valve with stable opening adjustment of liquefied natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322987749.7U CN220956836U (en) | 2023-11-07 | 2023-11-07 | Cold box J-T valve with stable opening adjustment of liquefied natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956836U true CN220956836U (en) | 2024-05-14 |
Family
ID=91014875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322987749.7U Active CN220956836U (en) | 2023-11-07 | 2023-11-07 | Cold box J-T valve with stable opening adjustment of liquefied natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956836U (en) |
-
2023
- 2023-11-07 CN CN202322987749.7U patent/CN220956836U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101245864B (en) | Self-operated three-way valve used for coolant circulating type machine room special machine | |
| CN220956836U (en) | Cold box J-T valve with stable opening adjustment of liquefied natural gas | |
| CN201925524U (en) | Three-way reversing valve of coolant system | |
| CN102741627B (en) | Refrigeration valve block | |
| CN201162851Y (en) | Self-operated three-way valve used for special machine for coolant circulating type machine room | |
| CN213332385U (en) | Stop valve | |
| CN101706185B (en) | Self-operated three-way reversing valve | |
| CN201025310Y (en) | A control valve for replacement device of car air-conditioner refrigerating agent | |
| CN201218352Y (en) | Through-flow type valve for ammonia refrigeration | |
| CN209638528U (en) | Shut-off valve and air conditioner | |
| CN221003846U (en) | Cryogenic plug valve | |
| JPS6350693A (en) | Reversible compressor | |
| KR101613454B1 (en) | Turbo Refrigeration machine Jet-trim Expansion valve | |
| CN207486062U (en) | Shut-off valve | |
| KR101613460B1 (en) | Fluid pressure (temperature) control, Decompression jet-trim(Circular) expansion valve | |
| KR101613450B1 (en) | Frozen ice thermal Jet-trim Expansion valve | |
| AU2017100462A4 (en) | Large-capacity defrosting valve | |
| CN221196242U (en) | Cap structure and stop valve | |
| JP2001349646A (en) | Two-way control valve with valve core | |
| CN220060644U (en) | High-temperature high-pressure reciprocating shaft sealing gas valve | |
| CN203571170U (en) | Cryogenic stop valve provided with valve cover with compound cooling disks | |
| CN219366450U (en) | Vane type rotary cylinder | |
| CN117167515A (en) | Cryogenic plug valve | |
| CN218722379U (en) | Transcritical CO2 refrigerating unit | |
| CN103671992B (en) | A kind of cryogenic gate valve with composite heat dissipation disc valve cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |