Low-temperature-resistant gate valve

Abstract

The utility model discloses a low-temperature-resistant gate valve and relates to the field of gate valves. The low-temperature-resistant gate valve comprises a gate valve unit, a water collecting unit is arranged on the gate valve unit, the gate valve unit comprises a valve body, a long-neck valve cover, a filler assembly, a rotary disc switch and a valve rod, the water collecting unit comprises a water dripping plate, a slope-shaped block and a collecting assembly, the long-neck valve cover is fixedly sleeved with the water dripping plate, the slope-shaped block is fixedly connected to the water dripping plate, and the collecting assembly is fixedly connected to the water dripping plate. The collecting assembly is arranged on one side of the water dripping plate. According to the low-temperature-resistant gate valve, the water dripping plate, the slope-shaped block and the water tank are arranged at the bottom of the long-neck valve cover, so that condensate water on the outer wall of the long-neck valve cover slides onto the slope-shaped block along the long-neck valve cover, enters the water flowing groove along the slope-shaped block and then flows into the water tank; the problem that condensate water directly drips on the flange to cause corrosion of bolts on the flange is solved, the bolts on the flange are protected, and therefore the sealing performance of the low-temperature-resistant gate valve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gate valve, concretely is a low temperature resistant gate valve. BACKGROUND

[0002] Low temperature resistant gate valve is a kind of valve specially designed for working in low temperature environment, and is widely used in various occasions needing low temperature control, such as petrochemical industry, liquefied natural gas industry, deep sea oil and gas exploitation etc.In these fields, low temperature resistant gate valve can ensure that medium does not leak or other safety problems occur at extremely low temperature, and has important significance for guaranteeing production safety and stable operation.

[0003] The bonnet of most existing low temperature resistant gate valves usually adopts long neck structure, and this design is mainly to keep the valve stem and stuffing box away from low temperature medium, to avoid operation difficulty or sealing failure caused by too low temperature.

[0004] However, the outer wall of part of long neck bonnet is prone to produce condensed water in long-term low temperature environment, and the condensed water is easy to drop on flange, resulting in bolt rust on flange, and further affecting the sealing property of low temperature resistant gate valve. SUMMARY

[0005] In view of the defects of the prior art, the utility model provides a low temperature resistant gate valve, solves the problem that the long neck bonnet of part of low temperature resistant gate valve is prone to produce condensed water on outer wall in long-term low temperature environment, and the condensed water is easy to drop on flange, resulting in bolt rust on flange, and further affecting the sealing property of low temperature resistant gate valve.

[0006] To achieve the above purpose, the utility model is realized by the following technical scheme: a low temperature resistant gate valve includes a gate valve unit, a water collecting unit is arranged on the gate valve unit;

[0007] The gate valve unit includes a valve body, a long neck bonnet, a packing assembly, a rotary switch and a valve stem, the long neck bonnet is installed on the top of the valve body, the packing assembly is arranged on the top of the long neck bonnet, the rotary switch is arranged on the top of the packing assembly, and the valve stem is threadedly connected with the rotary switch;

[0008] The water collecting unit includes a drip plate, a slope block and a collecting assembly, the drip plate is fixedly sleeved on the long neck bonnet, the slope block is fixedly connected on the drip plate, and the collecting assembly is arranged on one side of the drip plate.

[0009] Preferably, the inside of the valve body is provided with a gate plate, and the gate plate is fixedly connected to the bottom end of the valve stem.

[0010] Preferably, the valve stem is arranged in the long neck bonnet and the packing assembly.

[0011] Preferably, the slope block is sleeved on the long-neck valve cover.

[0012] Preferably, the drip plate is provided with a water flow groove and a water outlet.

[0013] Preferably, the drip plate is provided with a fixing block.

[0014] Preferably, the collecting assembly comprises a water tank and a fixing groove seat.

[0015] Preferably, the fixing groove seat is movably sleeved on the fixing block.

[0016] The utility model discloses a low temperature resistant gate valve, which has the following beneficial effects:

[0017] 1. The low temperature resistant gate valve is provided with a drip plate, a slope block and a water tank at the bottom of the long-neck valve cover, so that the condensed water adhered to the outer wall of the long-neck valve cover first slides to the slope block and then enters the water flow groove, and since the water flow groove is inclined to the water outlet, the condensed water flows into the water tank from the water outlet, thereby avoiding the problem that the condensed water directly drops on the flange and causes the bolt on the flange to rust, further protecting the bolt on the flange, and thus ensuring the sealing property of the low temperature resistant gate valve.

[0018] 2. The low temperature resistant gate valve is provided with a detachable water tank, so that the water tank can be detached and poured in time after collecting water, and the condensed water can be repeatedly collected. DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the gate valve unit of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the water collecting unit of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the collecting assembly of the utility model.

[0024] In the figure: 1, gate valve unit; 11, valve body; 12, long neck valve cover; 13, packing assembly; 14, rotary switch; 15, valve rod; 2, water collecting unit; 21, drip plate; 211, water flow groove; 212, water outlet; 213, fixed block; 22, slope block; 23, collection assembly; 231, water tank; 232, fixed groove seat. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model is clearly and completely described, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] The utility model discloses a low temperature resistant gate valve.

[0027] According to the accompanying Figures 1-4 As shown, including gate valve unit 1, water collecting unit 2 is set up on gate valve unit 1, and gate valve unit 1 includes valve body 11, long neck valve cover 12, packing assembly 13, rotary switch 14 and valve rod 15, long neck valve cover 12 is installed on the top of valve body 11, packing assembly 13 is set up on the top of long neck valve cover 12, rotary switch 14 is set up on the top of packing assembly 13, and valve rod 15 is screw connected with rotary switch 14.

[0028] It is particularly disclosed that water collecting unit 2 includes drip plate 21, slope block 22 and collection assembly 23, drip plate 21 is fixedly sleeved on long neck valve cover 12, slope block 22 is fixedly connected on drip plate 21, and collection assembly 23 is set up on one side of drip plate 21, the condensate water on the outer wall of long neck valve cover 12 is made to slide to slope block 22 along long neck valve cover 12 by setting drip plate 21 and slope block 22, the condensate water enters water flow groove 211 along slope block 22, since water flow groove 211 is inclined to water outlet 212, the condensate water flows into water tank 231 from water outlet 212, the problem that the bolt on the flange is corroded due to the direct dripping of the condensate water on the flange is avoided, the bolt on the flange is further protected, and the sealing property of the low temperature resistant gate valve is further ensured.

[0029] Further, the inside of valve body 11 is provided with a gate plate, the gate plate is fixedly connected to the bottom end of valve rod 15, by rotating rotary switch 14, valve rod 15 can be driven to rotate and move up and down, and then the gate plate can be opened and closed.

[0030] Further, valve rod 15 is arranged to penetrate long neck valve cover 12 and packing assembly 13.

[0031] Further, the slope block 22 is fixedly sleeved on the long-neck valve cover 12, so that the condensed water on the outer wall of the long-neck valve cover 12 first slides onto the slope block 22 and then flows into the water flow groove 211 along the slope of the slope block 22.

[0032] Particularly disclosed, the drip plate 21 is provided with the water flow groove 211 and the water outlet 212, the water outlet 212 is arranged on one side of the water flow groove 211, and the slope of the water flow groove 211 is towards the water outlet 212, so that the water in the water flow groove 211 flows to the water outlet 212.

[0033] Particularly disclosed, the drip plate 21 is provided with the fixing block 213.

[0034] Particularly disclosed, the collection assembly 23 comprises a water tank 231 and a fixing groove seat 232, the water tank 231 is arranged on one side of the water outlet 212, and the fixing groove seat 232 is fixedly connected to the top of the water tank 231.

[0035] Need to be particularly emphasized, the fixing groove seat 232 is movably sleeved on the fixing block 213, through the arrangement of the detachable water tank 231, when the water tank 231 is full of water, the water tank 231 can be timely detached and poured, so that the collection of the condensed water can be repeated.

[0036] Working principle: first, the low-temperature-resistant gate valve is installed on the pipeline in the low-temperature environment, when the low temperature causes the liquefaction of the long-neck valve cover 12 to produce water vapor, the water vapor is attached to the outer wall of the long-neck valve cover 12, and then the condensed water drops are formed, the condensed water slides to the slope block 22 along the long-neck valve cover 12, the condensed water enters the water flow groove 211 along the slope block 22, flows to the water outlet 212 along the water flow groove 211, and then flows into the water tank 231;

[0037] When the water in the water tank 231 is full, the water tank 231 is lifted upwards, the fixing groove seat 232 is taken off from the fixing block 213 on the drip plate 21, the water in the water tank 231 is poured out, and then the fixing groove seat 232 is clamped on the fixing block 213 on the drip plate 21, so that the collection can be repeated.

[0038] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cryogenic resistant gate valve comprising a gate valve unit (1), characterized in that, The gate valve unit (1) is provided with a water collecting unit (2); The gate valve unit (1) comprises a valve body (11), a long-neck valve cover (12), a packing assembly (13), a rotary switch (14) and a valve rod (15), the long-neck valve cover (12) is installed on the top of the valve body (11), the packing assembly (13) is arranged on the top of the long-neck valve cover (12), the rotary switch (14) is arranged on the top of the packing assembly (13), and the valve rod (15) is threadedly connected with the rotary switch (14); The water collecting unit (2) comprises a drip plate (21), a slope block (22) and a collecting assembly (23), the drip plate (21) is fixedly sleeved on the long-neck valve cover (12), the slope block (22) is fixedly connected on the drip plate (21), and the collecting assembly (23) is arranged on one side of the drip plate (21).

2. A cryogenic resistant gate valve according to claim 1, wherein, The inside of the valve body (11) is provided with a gate plate, and the gate plate is fixedly connected to the bottom end of the valve rod (15).

3. A cryogenic resistant gate valve according to claim 1, wherein, The valve rod (15) penetrates through the long-neck valve cover (12) and the packing assembly (13).

4. A cryogenic resistant gate valve according to claim 1, wherein, The slope block (22) is fixedly sleeved on the long-neck valve cover (12).

5. A cryogenic resistant gate valve as defined in claim 1 wherein, The drip plate (21) is provided with a water flow groove (211) and a water outlet (212), and the water outlet (212) is arranged on one side of the water flow groove (211).

6. A cryogenic resistant gate valve as defined in claim 1, wherein, The drip plate (21) is provided with a fixing block (213).

7. A cryogenic resistant gate valve according to claim 5, wherein, The collecting assembly (23) comprises a water tank (231) and a fixing groove (232), the water tank (231) is arranged on one side of the water outlet (212), and the fixing groove (232) is fixedly connected to the top of the water tank (231).

8. A cryogenic resistant gate valve according to claim 7, wherein, The fixing groove (232) is movably sleeved on the fixing block (213).

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