CN210218853U - Gate valve with spiral heat preservation channel - Google Patents
Gate valve with spiral heat preservation channel Download PDFInfo
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- CN210218853U CN210218853U CN201920653613.3U CN201920653613U CN210218853U CN 210218853 U CN210218853 U CN 210218853U CN 201920653613 U CN201920653613 U CN 201920653613U CN 210218853 U CN210218853 U CN 210218853U
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- heat preservation
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- heat
- valve rod
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Abstract
The utility model discloses a gate valve with spiral heat preservation channel, which comprises a valve body and a valve cover, wherein the valve cover is arranged on the valve body and forms an installation cavity, a flow passage is arranged in the valve body, a valve rod is arranged in the installation cavity, a valve core is arranged on the valve rod, the valve rod drives the valve core to reciprocate so as to control the cutting and communication of the flow passage, a heat retainer sleeved on the outer wall of the valve rod is arranged in the installation cavity, and the heat retainer is provided with a supporting arm; the heat retainer is internally provided with a heat preservation cavity which is attached to the outer wall of the valve rod to form heat transfer, and the heat preservation cavity is internally provided with a heat preservation channel which is spirally arranged along the axial direction of the valve rod; the valve cover outer wall is provided with a filling valve, the valve body outer wall is provided with a discharge valve, and the filling valve and the discharge valve are respectively communicated with the upper end and the lower end of the heat preservation channel in the heat preservation cavity through communicating pipelines. The utility model has the advantages of it is following and effect: this gate valve guarantees the stability of working under low temperature environment through pouring into hot steam into in the heat preservation passageway.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to gate valve with spiral heat preservation passageway.
Background
The gate valve is a shutter plate, the moving direction of which is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and can not be adjusted and throttled. The gate valve is used as a stopping medium, wherein the medium comprises water, oil and the like, and the valve rod drives the valve clack to reciprocate during operation, so that the communication or the partition of the flow passage is realized.
When the traditional gate valve works in a low-temperature environment for a long time, the medium remained on the valve rod is easy to freeze or crystallize, so that the gate valve is difficult to open and close. In the case of the situation, a common method is to wrap the valve by using a heat insulation material, so as to reduce the loss of heat energy and keep the normal temperature of the valve, but the method has the advantages of common heat insulation capacity and unobvious effect, and the heat insulation material is required to wrap the valve layer by layer, so that the operation is complicated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gate valve with spiral heat preservation passageway through pouring into hot steam into, rises the temperature of valve and keeps in certain scope to let the valve can normally work under cold circumstance.
The above technical purpose of the present invention can be achieved by the following technical solutions: a gate valve with a spiral heat preservation channel comprises a valve body and a valve cover, wherein the valve cover is arranged at the upper end of the valve body to form a mounting cavity, a flow channel for fluid medium to circulate is formed in the valve body, a valve rod penetrating the flow channel is vertically arranged in the mounting cavity, a valve core is arranged at one end, located at the flow channel, of the valve rod, the valve core is driven by the valve rod to reciprocate along the axial direction of the valve rod so as to control the cutting and communication of the flow channel, a heat preservation device sleeved on the outer wall of the valve rod is arranged in the mounting cavity, and a support arm abutting against the inner wall of the mounting cavity is arranged at the lower end of the heat preservation device and is limited in the mounting; a heat preservation cavity is arranged in the heat retainer, the heat preservation cavity is attached to the outer wall of the valve rod and forms heat transfer, a heat preservation channel is fixedly arranged in the heat preservation cavity, and the heat preservation channel is spirally arranged along the axial direction of the valve rod; the valve cover outer wall on be provided with the filling valve, the valve body outer wall on be provided with the discharge valve, the filling valve through the intercommunication pipeline with the heat preservation intracavity heat preservation passageway the upper end intercommunication setting, the discharge valve through the intercommunication pipeline with the heat preservation intracavity heat preservation passageway the lower extreme intercommunication setting.
Further setting the following steps: the valve gap outer wall on be provided with a pressure relief device, pressure relief device include the pressure release chamber and respectively with pressure release chamber be linked together pressure release import and pressure release export, the pressure release import set up through intercommunication pipeline and heat preservation chamber intercommunication, pressure release export and valve body outside be linked together, pressure release intracavity be provided with ball and drive spring, ball and pressure release import offset and be used for sealing the pressure release import, drive spring and ball fixed connection and make the ball have the trend towards the motion of pressure release import.
Further setting the following steps: the packing gland structure is characterized in that packing is arranged on two sides of the upper end of the valve rod, a compression ring is arranged above the packing, a packing gland for extruding the packing is arranged above the compression ring, a bolt in threaded fit with the valve cover is arranged on the packing gland, and the head of the bolt is abutted against the upper side of the packing gland.
The utility model has the advantages that:
1. the heat retainer sets up in the installation intracavity and pastes mutually with the outer wall of valve rod, injects hot medium, for example hot steam into through the heat preservation chamber in the heat retainer, lets the heat preservation chamber heat up, simultaneously because the heat conduction contact of heat preservation chamber and valve rod can heat the valve rod, makes the valve rod keep at the uniform temperature, avoids the valve rod to be difficult to the condition emergence of opening under low temperature environment.
2. The outer walls of the valve cover and the valve body are respectively provided with a filling valve and a discharge valve which are communicated with the heat preservation cavity, hot steam can be injected through the filling valve, the injected hot steam can be diffused in the heat preservation cavity to enable the temperature of the whole heat preservation cavity to rise, and meanwhile, the heat preservation cavity is attached to the valve rod to heat the valve rod through heat transfer; the exhaust valve is used for pumping out the hot steam in the heat preservation cavity, and the circulation setting through the filling valve and the discharge valve can ensure that the heat preservation cavity can be stably kept in a suitable temperature range, so that the phenomenon that the valve rod cannot be heated due to the fact that the hot steam in the heat preservation cavity is lost is avoided.
3. The diffusion direction of hot steam can be guided to the heat preservation passageway through the heat preservation intracavity, and the heat preservation passageway is the heliciform and arranges, can let the hot steam who injects from the filling valve continuously along the screw direction and continuously diffuse, has guaranteed that the bulk temperature in heat preservation chamber can be in under the balanced state, avoids appearing the great condition of local difference in temperature, can keep the constant temperature in reasonable scope after making the valve rod pass through the heat transfer in heat preservation chamber, reaches the smooth and easy stable purpose of work under the low temperature environment.
4. When injecting into hot steam too much in the heat preservation intracavity can have the heat preservation intracavity pressure to be greater than the condition of installation cavity and the outside pressure of valve body, lead to the too big heat retainer that makes of heat preservation intracavity pressure to damage, the event is in the utility model discloses in order to avoid above-mentioned condition to take place, be provided with pressure relief device. When the pressure in the heat-insulation cavity is too high, the ball in the pressure relief device is pushed to compress the driving spring, and the ball is separated from the pressure relief inlet, and at the moment, hot steam in the heat-insulation cavity can be diffused to the pressure relief cavity through the pressure relief inlet and is discharged to the outside of the valve body through the pressure relief outlet, so that the pressure in the heat-insulation cavity is ensured to be stable; when the pressure in the heat preservation cavity is stable, the ball can support again and seal the pressure relief inlet under the action of the driving spring, the sealing performance of the heat preservation cavity is guaranteed, and the heat preservation cavity has the advantages of simple and reasonable structure and good practical application effect.
5. The design of the filler effectively seals the communication between the fluid medium in the valve body and the atmosphere, so that the whole valve body cannot be leaked. The design of the packing gland plays a role in sealing different packing materials and depths. The packing gland and the valve cover are connected through the bolt, so that packing is tightly arranged between the valve body and the valve rod through the extrusion of the packing gland, the sealing is more reliable, and the leakage of a flow passage due to the loosening of the packing is prevented.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
in the figure: 1. a valve body; 10. a mounting cavity; 11. a flow channel; 2. a valve cover; 3. a valve stem; 4. a valve core; 5. a support arm; 60. a heat preservation cavity; 61. a heat preservation channel; 71. a fill valve; 72. a discharge valve; 81. a pressure relief inlet; 82. a pressure relief cavity; 83. a pressure relief outlet; 84. a ball bearing; 85. a drive spring; 91. a filler; 92. pressing a ring; 93. a packing gland; 94. and (4) bolts.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, a gate valve with spiral heat preservation passageway, including valve body 1 and valve gap 2, valve gap 2 lid is located the upper end of valve body 1 and is formed an installation cavity 10, has seted up the runner 11 that supplies the fluid medium circulation in the valve body 1, vertical installation is worn to establish the valve rod 3 to runner 11 in the installation cavity 10, valve rod 3 is located the one end of runner 11 and installs case 4, thereby valve rod 3 drives case 4 and carries out reciprocating motion along the axial of valve rod 3 and control cutting off and the UNICOM of runner 11. The upper end of the valve rod 3 is generally provided with an actuator or a handle (not marked in the figure) for driving the valve rod 3 to move up and down along the self axial direction, and meanwhile, the valve rod 3 can drive the valve core 4 to move synchronously, so that the valve core 4 is matched with the valve seat to cut off and communicate the flow passage 11. The above structure is the basic structure of the gate valve, and belongs to the field of the prior art, so that the description is not provided herein.
A heat retainer arranged on the outer wall of the valve rod 3 is arranged in the mounting cavity 10 in a sleeved mode, a supporting arm 5 which is abutted against the inner wall of the mounting cavity 10 is arranged at the lower end of the heat retainer, and the heat retainer is limited in the mounting cavity 10 through the supporting arm 5. The warmer is positioned in the installation chamber 10 by means of the support arm 5.
A heat preservation cavity 60 is arranged in the heat retainer, the heat preservation cavity 60 is attached to the outer wall of the valve rod 3 to form heat transfer, a heat preservation channel 61 is fixedly arranged in the heat preservation cavity 60, and the heat preservation channel 61 is spirally arranged along the axial direction of the valve rod 3; the outer wall of the valve cover 2 is provided with a filling valve 71, the outer wall of the valve body 1 is provided with a discharge valve 72, the filling valve 71 is communicated with the upper end of the heat preservation channel 61 in the heat preservation cavity 60 through a communication pipeline, and the discharge valve 72 is communicated with the lower end of the heat preservation channel 61 in the heat preservation cavity 60 through a communication pipeline.
From this, inject the heat preservation medium in the follow filling valve 71, for example, hot steam lets heat preservation chamber 60 intensifies, the top that heat preservation passageway 61 can be followed to the hot steam of injection begins along heat preservation passageway 61 diffusion downwards, heat preservation passageway 61 is the heliciform, can guarantee that hot steam can be round the diffusion along the valve rod 3 heliciform, guarantee that valve rod 3 can be faster more stable intensification under the heat transfer in heat preservation chamber 60, not only improve hot steam's heat transfer efficiency, still guarantee that the temperature in the heat preservation chamber 60 is more stable. Finally, the hot steam can be discharged from the discharge valve 72, the circulation of the hot steam is realized through the filling valve 71 and the discharge valve 72, and the problem that the hot steam loses effect after generating heat energy loss in the heat preservation cavity 60 for a long time is solved.
Be provided with a pressure relief device on the valve gap 2 outer wall, pressure relief device includes pressure release chamber 82 and respectively with pressure release import 81 and the pressure release export 83 that pressure release chamber 82 is linked together, pressure release import 81 sets up through intercommunication pipeline and heat preservation chamber 60 intercommunication, pressure release export 83 is linked together with the valve body 1 outside, be provided with ball 84 and drive spring 85 in the pressure release chamber 82, ball 84 offsets with pressure release import 81 and is used for sealing pressure release import 81, drive spring 85 and ball 84 fixed connection and make ball 84 have the trend towards pressure release import 81 motion. The pressure in the heat preservation cavity 60 can be ensured to be at a stable value through the pressure relief device, and the condition that the heat preservation device is damaged due to the fact that the pressure in the heat preservation cavity 60 is too high is avoided.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (3)
1. The utility model provides a gate valve with spiral heat preservation passageway, includes valve body (1) and valve gap (2), valve gap (2) lid locate the upper end of valve body (1) and form an installation cavity (10), valve body (1) in seted up runner (11) that supply the fluid medium circulation, installation cavity (10) in vertical valve rod (3) of wearing to establish to runner (11) of installing, valve rod (3) be located the one end of runner (11) and install case (4), thereby valve rod (3) drive valve core (4) cut off and the UNICOM of axial along valve rod (3) carrying out reciprocating motion control runner (11), its characterized in that:
a heat retainer sleeved on the outer wall of the valve rod (3) is arranged in the mounting cavity (10), a supporting arm (5) abutting against the inner wall of the mounting cavity (10) is arranged at the lower end of the heat retainer, and the heat retainer is limited in the mounting cavity (10) through the supporting arm (5);
a heat preservation cavity (60) is arranged in the heat retainer, the heat preservation cavity (60) is attached to the outer wall of the valve rod (3) to form heat transfer, a heat preservation channel (61) is fixedly arranged in the heat preservation cavity (60), and the heat preservation channel (61) is spirally arranged along the axial direction of the valve rod (3);
the heat preservation valve is characterized in that a filling valve (71) is arranged on the outer wall of the valve cover (2), a discharge valve (72) is arranged on the outer wall of the valve body (1), the filling valve (71) is communicated with the upper end of a heat preservation channel (61) in the heat preservation cavity (60) through a communicating pipeline, and the discharge valve (72) is communicated with the lower end of the heat preservation channel (61) in the heat preservation cavity (60) through a communicating pipeline.
2. The gate valve with spiral insulating channel of claim 1, wherein: valve gap (2) outer wall on be provided with a pressure relief device, pressure relief device include pressure release chamber (82) and respectively with pressure release chamber (82) be linked together pressure release inlet (81) and pressure release export (83), pressure release inlet (81) set up through intercommunication pipeline and heat preservation chamber (60) intercommunication, pressure release export (83) be linked together with valve body (1) outside, pressure release chamber (82) in be provided with ball (84) and driving spring (85), ball (84) and pressure release import (81) offset and be used for sealing pressure release import (81), driving spring (85) and ball (84) fixed connection and make ball (84) have the trend towards pressure release import (81) motion.
3. The gate valve with spiral insulating channel of claim 1, wherein: both sides of valve rod (3) upper end all be provided with packing (91), the top of packing (91) be provided with clamping ring (92), clamping ring (92) top be provided with gland (93) of extrusion packing (91), gland (93) be provided with valve gap (2) screw-thread fit's bolt (94), the head and gland (93) top of this bolt (94) offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920653613.3U CN210218853U (en) | 2019-05-06 | 2019-05-06 | Gate valve with spiral heat preservation channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920653613.3U CN210218853U (en) | 2019-05-06 | 2019-05-06 | Gate valve with spiral heat preservation channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218853U true CN210218853U (en) | 2020-03-31 |
Family
ID=69925279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920653613.3U Active CN210218853U (en) | 2019-05-06 | 2019-05-06 | Gate valve with spiral heat preservation channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210218853U (en) |
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2019
- 2019-05-06 CN CN201920653613.3U patent/CN210218853U/en active Active
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