An integrated high temperature cut-off gas ball valve

Abstract

The present invention provides an integrated high-temperature cut-off gas ball valve, which belongs to the technical field of control valves. An integrated high-temperature cut-off gas ball valve includes a cut-off component arranged in the valve body and a temperature sensing component outside the valve body; the present invention arranges an integrated valve body cavity in the valve body, so that there is no connection point between the cut-off component and the fluid inlet, thereby avoiding the problem of gas cut-off failure caused by high temperature damage to the connection point, improving the reliability of gas cut-off, and the valve body and the temperature sensing accommodating cavity are an integrated structure, so that the direction of the temperature sensing accommodating cavity on the valve body can be changed, thereby satisfying the need to direct the temperature sensing accommodating cavity to a direction prone to accidents, improving adaptability, and in addition, the temperature sensing component for sensing temperature is arranged outside the valve body, which can quickly and accurately sense changes in external temperature, thereby improving the valve's sensitivity to gas cut-off, and better meeting the use conditions of gas applications.

Description

Technical Field

[0001] The invention relates to the technical field of control valves, and in particular to an integrated high-temperature gas cut-off ball valve. Background Art

[0002] As people's use of natural gas technology becomes more and more mature, gas is widely used in people's production and life. However, due to the large number of safety hazards in the use of gas, people are paying more and more attention to safety issues in the process of gas application.

[0003] As a cut-off component in the current gas channel, the gas cut-off ball valve can automatically cut off the gas supply in the event of a fire or other accident that causes high temperature, thereby improving the safety of the gas supply. However, the gas cut-off ball valves currently on the market include the following two types:

[0004] The first type is the internal sensing type, such as a gas shut-off ball valve disclosed in Chinese patent CN201720123377.5, which is provided with a shut-off assembly in the fluid channel, and a thermosensitive element is provided in the shut-off assembly. Under normal circumstances, the thermosensitive element remains unchanged, and the shut-off assembly remains in a compressed state, and the fluid channel is in a passage state; in the event of an accident causing high temperature, the thermosensitive element senses the high temperature and is melted or softened and deformed, causing the shut-off assembly to stretch and block the fluid channel, thereby achieving gas shut-off in the accident. However, the components used for sensing in the above-mentioned structure are arranged in the fluid channel, which not only has poor ability to sense external temperature difference changes, but is also easily affected by the temperature of the fluid in the pipeline, and has poor sensing accuracy. Therefore, it is impossible to achieve timely and efficient blocking of the gas supply, and the hysteresis is obvious.

[0005] The second type is the external sensing type, such as the over-temperature cut-off safety valve disclosed in Chinese patent CN201811367404.9, in which a locking pin assembly is provided on the side wall of the valve body to lock the valve core, and a temperature-sensitive spring is provided in the locking pin assembly. Under normal circumstances, the valve core is open, and the locking pin assembly locks the valve core, so that the fluid channel is open; in the event of an accident causing high temperature, the temperature-sensitive spring senses the temperature change and causes the locking pin assembly to unlock the valve core, so that the valve core closes the fluid channel and cuts off the gas supply in the accident. Although the temperature-sensing sensing component is provided on the side wall of the valve body, so that the sensing component can quickly sense the change in external temperature, thereby improving the reaction speed and accuracy, this structure has a connection point between the fluid inlet end and the locking pin assembly, which leads to the problem of easy damage to the connection point at high temperature, and there is a risk of gas cut-off failure.

[0006] In summary, the high-temperature cut-off gas ball valve currently on the market cannot simultaneously combine the characteristics of fast and accurate cut-off and reliable cut-off, and cannot meet the use requirements. Summary of the invention

[0007] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide an integrated high-temperature cut-off gas ball valve, in which an integrated valve body cavity is opened in the valve body to install the cut-off component, the sealing seat, the ball, the valve seat and the valve cover, so that there is no connection point between the cut-off component and the fluid inlet, thereby avoiding the problem of cut-off failure caused by damage to the connection when the accident causes high temperature, improving the effectiveness of gas cut-off, and making it safer. At the same time, the temperature sensing component for sensing the temperature is protrudingly arranged on the outside of the valve body, which can not only avoid the influence of the fluid in the fluid channel on the temperature, but also can quickly and accurately sense the changes in the external temperature, thereby improving the sensitivity, thereby combining the characteristics of fast and accurate gas cut-off and ensuring reliable cut-off, and better meeting the use requirements in modern gas applications.

[0008] The specific technical solutions are as follows:

[0009] The closure of the valve body is connected with the closure of the valve body by a threaded connection, and the closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection. The closure of the valve body is connected with the closure of the valve body by a threaded connection.

[0010] The cutting assembly includes a cutting structure and a sealing seat, which are arranged in the fluid channel in sequence from the fluid inlet to the fluid outlet. The sealing seat is provided with a flow hole. The cutting structure includes a supporting body and a cutting body. The supporting body is arranged in the fluid channel and has a flow channel. The cutting body is slidably arranged on the supporting body and can slide back and forth in the direction close to or away from the sealing seat.

[0011] The above-mentioned integrated high-temperature cut-off gas ball valve, wherein the support body includes a sleeve and a baffle, the sleeve and the baffle are arranged side by side and in parallel, the baffle is fixed in the fluid channel and close to one end of the fluid inlet, the sleeve is slidably arranged in the fluid channel and is located on the side of the baffle away from the fluid inlet, a sealing spring is arranged between the sleeve and the baffle, and the sleeve and the baffle are both arranged in an annular shape, a first bracket is arranged on the inner side of the sleeve, a second bracket is arranged on the inner side of the baffle, and positioning holes are opened in the centers of the first bracket and the second bracket, and a plurality of flow channels are distributed in an annular array on the outside of the positioning holes on the first bracket and the second bracket.

[0012] In the above-mentioned integrated high-temperature gas cut-off ball valve, the positioning holes on the first bracket and the second bracket are coaxially arranged, and the flow channels on the first bracket and the second bracket are also arranged to be directly opposite.

[0013] The above-mentioned integrated high-temperature cut-off gas ball valve, wherein the cut-off body includes a plug body and a connecting rod, the plug body is arranged between the support body and the sealing seat, a threaded hole is opened in the middle of the plug body along the direction from the support body to the sealing seat, one end of the connecting rod is screwed into the threaded hole, and the other end of the connecting rod is inserted into the positioning holes on the first bracket and the second bracket. At the same time, a chamfer is provided on the side of the plug body close to the sealing seat to form a first conical surface, and a chamfer is also provided on the side of the plug body close to the support body to form a second conical surface.

[0014] In the above-mentioned integrated high-temperature gas cut-off ball valve, a conical expansion hole is provided on one side of the sealing seat close to the plug body, and the conical expansion hole is connected to the flow hole.

[0015] In the above-mentioned integrated high-temperature gas cut-off ball valve, a first step groove is provided in the valve body cavity and between the fluid inlet and the fluid channel, and a side of the baffle away from the bushing abuts against the first step groove.

[0016] The above-mentioned integrated high-temperature cut-off gas ball valve, wherein a second step groove is provided in the valve body cavity and in the fluid channel, the second step groove is located at the sealing seat and close to one side of the support body, and the sealing seat is tightly fitted in the second step groove.

[0017] The above-mentioned integrated high-temperature cut-off gas ball valve, wherein the temperature sensing component includes a limit piece, a positioning plate, a temperature sensing flap, a heat conductive piece and a base, the base is arranged in a "U"-shaped structure, the opening of the base faces the fluid channel, the limit piece is arranged on the positioning plate and is located on the side of the positioning plate close to the fluid channel, the positioning plate is slidably arranged in the base, and the limit piece can selectively extend into the fluid channel and contact the support body, the temperature sensing flap is arranged in the base and is located on the side of the positioning plate away from the limit piece, and the heat conductive piece is arranged between the base and the cover.

[0018] In the above-mentioned integrated high-temperature gas cut-off ball valve, the limiting member is arranged in a spherical shape, a receiving hole is opened at the center of the positioning plate, and the limiting member is embedded in the receiving hole.

[0019] The above-mentioned integrated high-temperature cut-off gas ball valve, wherein the temperature sensing component includes a limit piece, a positioning plate, a limit spring and a temperature sensing deformation piece, the positioning plate is slidably arranged in the temperature sensing accommodating cavity, and a sliding hole is opened in the center of the positioning plate, a gap is arranged between the positioning plate and the blind cover, and a temperature sensing deformation piece is arranged on the side of the gap close to the bottom of the blind cover, the limit piece is arranged in a "⊥" shape, the limit piece includes a limit end and a rest end arranged at the bottom of the limit end and perpendicular to the limit end, the limit end is inserted into the sliding hole, the end of the limit end away from the rest end can selectively extend into the fluid channel and contact the support body, the rest end is located in the gap and between the positioning plate and the temperature sensing deformation piece, at the same time, the limit end is also sleeved with a limit spring, and one end of the limit spring rests on the rest end, and the other end rests on the positioning plate.

[0020] The positive effects of the above technical solution are:

[0021] The above-mentioned integrated high-temperature cut-off gas ball valve is provided with an integrated valve body cavity for accommodating the cut-off component, the sealing seat, the ball, the valve seat and the valve cover in the valve body, the valve body cavity includes a fluid inlet, a fluid outlet and a fluid channel connecting the two, and the cut-off component is arranged in the fluid channel, so that there is no connection point between the cut-off component and the fluid inlet, thereby avoiding the problem of gas cut-off failure caused by damage to the connection when high temperature and other problems are caused by accidents, thereby improving the reliability of gas cut-off; in addition, a temperature sensing component is arranged on the outside of the valve body to act on the cut-off component, so that it can sense the change of external temperature more quickly, and can also avoid being affected by the fluid in the fluid channel, so that the operation of gas cut-off is faster and more accurate, and the sensitivity of gas cut-off is improved; a temperature sensing accommodating cavity is arranged on the valve body, which ensures that the temperature sensing accommodating cavity and the valve body are arranged in an integrated form, so that when the valve body is formed, the temperature sensing accommodating cavity can be directed to the direction where accidents are likely to occur, so that the temperature changes The information is obtained more timely, the timeliness of gas shut-off is improved, and the structure is more reasonable. Compared with the split form in which the temperature sensing accommodating chamber is screwed onto the valve body, the screw-in angle cannot be guaranteed, which leads to the inability to ensure the orientation of the temperature sensing element; in addition, the flow holes on the first bracket of the bushing and the second bracket of the baffle are arranged opposite to each other, which can increase the flow rate of the fluid channel, and the structure is more reasonable; chamfers are also provided on both sides of the plug body to form a two-way conical structure, which can also increase the flow rate of the fluid channel; in addition, by providing a first step groove in the valve body cavity to fix the baffle, the cross-sectional area of ​​the fluid channel can be made larger than the cross-sectional area at the fluid inlet, thereby increasing the cross-sectional area of ​​the baffle, thereby increasing the flow control hole area on the baffle, and further increasing the flow rate; in addition, the temperature-sensitive flap and the temperature-sensitive deformation member deform by sensing temperature changes, causing the position of the limit member to change to realize the gas shut-off operation, and can be reset after the temperature recovers, and can be used repeatedly, saving costs and resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a preferred embodiment of the present invention in a normal state;

[0023] Figure 2 for Figure 1 A magnified view of part A;

[0024] Figure 3 A structural diagram of a baffle according to a preferred embodiment of the present invention from one viewing angle;

[0025] Figure 4 A structural diagram of a baffle from another perspective of a preferred embodiment of the present invention;

[0026] Figure 5 A cross-sectional view of a bushing according to a preferred embodiment of the present invention;

[0027] Figure 6A structural diagram of a bushing from one perspective of a preferred embodiment of the present invention;

[0028] Figure 7 A cross-sectional view of a plug body according to a preferred embodiment of the present invention;

[0029] Figure 8 A structural diagram of a connecting rod according to a preferred embodiment of the present invention;

[0030] Fig. 9 A cross-sectional view of a sealing seat according to a preferred embodiment of the present invention;

[0031] Fig.10 It is a structural diagram of a preferred embodiment of the present invention in a cut-off state;

[0032] Fig.11 It is a structural diagram of another preferred embodiment of the present invention in a normal state;

[0033] Fig.12 It is a structural diagram of another preferred embodiment of the present invention in a cut-off state;

[0034] Fig.13 This is a structural diagram of another orientation of the temperature sensing chamber in another preferred embodiment of the present invention.

[0035] In the accompanying drawings: 1, valve body; 11, valve body cavity; 12, convex neck; 13, temperature sensing cavity; 14, first step groove; 15, second step groove; 111, fluid inlet; 112, fluid channel; 113, fluid outlet; 131, cover; 2, ball; 21, valve stem; 3, valve seat; 4, valve cover; 5, handle; 6, cut-off assembly; 61, cut-off structure; 62, sealing seat; 611, support body; 612, cut-off body; 621, flow hole; 622, conical expansion hole; 6111, bushing; 61 12. Baffle; 6113. Sealing spring; 6114. First bracket; 6115. Second bracket; 6116. Positioning hole; 6117. Flow channel; 6121. Plug body; 6122. Connecting rod; 6123. Threaded hole; 6124. First conical surface; 6125. Second conical surface; 7. Temperature sensing component; 71. Limiting member; 72. Positioning plate; 73. Temperature sensing flap; 74. Heat conducting member; 75. Base; 76. Limiting spring; 77. Temperature sensing deformation member; 711. Limiting end; 712. Abutting end. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the attached Figure 1 To Attachment Fig.13 The technical solution provided by the present invention is described in detail, but the following content is not intended to limit the present invention.

[0037] Embodiment 1:

[0038] Figure 1 This is a structural diagram of a preferred embodiment of the present invention in a normal state; Figure 2 for Figure 1 This is an enlarged view of part A. Figure 1 and Figure 2 As shown, the integrated high-temperature cut-off gas ball valve provided in this embodiment includes: a valve body 1, a ball 2, a valve seat 3, a valve cover 4 and a handle 5. A valve body cavity 11 is opened in the valve body 1. The valve body cavity 11 includes a fluid inlet 111, a fluid outlet 113 and a fluid channel 112 connecting the fluid inlet 111 and the fluid outlet 113. The ball 2 and the valve seat 3 are arranged in the valve body cavity 11 and at one end close to the fluid outlet 113. At the same time, the valve cover 4 is screwed on the fluid outlet 113. An outwardly convex neck 12 is arranged on the valve body 1 and located in the area corresponding to the ball 2. A valve stem 21 is connected to the ball 2, and the end of the valve stem 21 away from the ball 2 passes through the convex neck 12 and is connected to the handle 5. Under normal circumstances, the ball 2 can be rotated by the handle 5 to realize the opening and closing of the valve, thereby controlling the supply of gas.

[0039] Specifically, the valve body cavity 11 in the valve body 1 includes a fluid inlet 111, a fluid outlet 113 and a fluid channel 112 which are an integrated structure. The gas enters from the fluid inlet 111 and is discharged to the fluid outlet 113 through the fluid channel 112. A cut-off component 6 is provided in the valve body cavity 11 and at one end close to the fluid inlet 111, so that there is no connection point between the cut-off component 6 and the fluid inlet 111, thereby avoiding the problem of connection point damage caused by factors such as excessively high external temperature, thereby preventing the risk of gas cut-off failure and improving the reliability of gas cut-off. At the same time, a protruding temperature sensing chamber 13 is provided on the valve body 1 and located in the area corresponding to the cut-off component 6, and the temperature sensing chamber 13 and the valve body 1 are an integrated structure, the temperature sensing chamber 13 is communicated with the fluid channel 112, a temperature sensing component 7 is provided in the temperature sensing chamber 13, and a cover 131 is provided in the temperature sensing chamber 13 and located on the side of the temperature sensing component 7 away from the fluid channel 112, the temperature sensing component 7 can selectively extend into the fluid channel 112 and clamp the cut-off component 6. Under normal circumstances, the temperature sensing component 7 extends into the fluid channel 112 and clamps the cut-off component 6, so that the cut-off component 6 cannot block the fluid channel 112, thereby maintaining the normal supply of gas. , and the temperature sensing component 7 and the valve body 1 are integrated into a structure and are located at the outermost side of the valve body 1, which can sense the changes in the external temperature more quickly and accurately, and can also avoid being affected by the fluid in the fluid channel 112, so that the operation of gas cutting is faster and more accurate, and the sensitivity of gas cutting is improved. In addition, the direction of the temperature sensing accommodating cavity 13 can be selected according to the customer's requirements for the installation environment of the valve. When the valve body 1 is formed, the temperature sensing accommodating cavity 13 is oriented towards the direction where accidents are prone to occur, so that the temperature sensing component 7 is conveniently set to the side in the direction where high-temperature accidents are prone to occur, so that the temperature change information can be obtained more timely, the timeliness of gas cutting is improved, and the structure is more reasonable.

[0040] More specifically, the cut-off assembly 6 in the valve body cavity 11 further comprises a cut-off structure 61 and a sealing seat 62, which are sequentially arranged in the fluid channel 112 along the direction from the fluid inlet 111 to the fluid outlet 113, and a flow hole 621 is provided on the sealing seat 62, through which the gas entering the fluid inlet 111 flows to the fluid outlet 113. The cut-off structure 61 further comprises a support body 611 and a cut-off body 612, the support body 611 is arranged in the fluid channel 112 and has a flow channel 6117, so that the gas can flow from the fluid inlet 111 to the flow channel 6117 of the support body 611 to the flow hole 621 of the sealing seat 62, and the cut-off body 612 is slidably arranged on the support body 611 and can reciprocately slide in the direction of approaching or moving away from the sealing seat 62, so that the flow hole 621 on the sealing seat 62 can be opened and blocked by the sliding of the cut-off body 612, thereby releasing and cutting off the gas.

[0041] Figure 3A structural diagram of a baffle according to a preferred embodiment of the present invention from one viewing angle; Figure 4 A structural diagram of a baffle from another perspective of a preferred embodiment of the present invention; Figure 5 A cross-sectional view of a bushing according to a preferred embodiment of the present invention; Figure 6 FIG. 1 is a structural diagram of a bushing according to a preferred embodiment of the present invention from one perspective. Figures 1 to 6 As shown, the support body 611 of the cut-off assembly 6 further includes a bushing 6111 and a baffle 6112, the bushing 6111 and the baffle 6112 are arranged side by side and in parallel, the baffle 6112 is fixed in the fluid channel 112 and close to one end of the fluid inlet 111, the bushing 6111 is slidably arranged in the fluid channel 112 and is located on the side of the baffle 6112 away from the fluid inlet 111, and a plugging spring 6113 is arranged between the bushing 6111 and the baffle 6112, so that the position of the bushing 6111 in the fluid channel 112 is changed by the expansion and contraction of the plugging spring 6113, thereby driving the cut-off body 612 to move and realize the cutting off of the gas, and the bushing 6111 and the baffle 6112 are both arranged in an annular shape, and a first The bracket 6114 and the second bracket 6115 are arranged on the inner side of the baffle 6112, and the centers of the first bracket 6114 and the second bracket 6115 are both provided with positioning holes 6116, through which a mounting carrier is provided for the cut-off body 612, so as to facilitate the installation of the cut-off body 612, and a plurality of flow channels 6117 are distributed in a ring array on the outer side of the positioning holes 6116 on the first bracket 6114 and the second bracket 6115, so that the gas flowing in from the fluid inlet 111 can sequentially pass through the flow channels 6117 on the baffle and the flow channels 6117 on the bushing 6111 and then flow into the flow hole 621 of the sealing seat 62, so as to provide a passage for the gas from the fluid inlet 111 to the sealing seat 62, so that under normal circumstances, the gas supply will not be interfered with.

[0042] Specifically, the positioning hole 6116 on the first bracket 6114 on the bushing 6111 and the second bracket 6115 on the baffle 6112 are coaxially arranged to facilitate the installation of the cut-off body 612, and the flow channels 6117 on the first bracket 6114 and the second bracket 6115 are also arranged opposite to each other, so that the flow of the gas is smoother, thereby increasing the flow rate of the fluid channel 112 and making the structure more reasonable.

[0043] Figure 7 A cross-sectional view of a plug body according to a preferred embodiment of the present invention; Figure 8 FIG. 2 is a structural diagram of a connecting rod of a preferred embodiment of the present invention. Figure 1 , Figure 2 as well as Figure 7 and Figure 8As shown, the cutting body 612 of the cutting assembly 6 further comprises a plug body 6121 and a connecting rod 6122. The plug body 6121 is arranged between the support body 611 and the sealing seat 62. A threaded hole 6123 is provided in the middle of the plug body 6121 along the direction from the support body 611 to the sealing seat 62. One end of the connecting rod 6122 is screwed into the threaded hole 6123, and the other end of the connecting rod 6122 is inserted into the positioning hole 6116 on the first bracket 6114 and the second bracket 6115, so that when the sealing spring 6113 drives the bushing 6111 to slide in the fluid channel 112, the connecting rod 6122 also drives the plug body 6121 to move in the fluid channel 112 in the direction close to or away from the sealing seat 62, so that the flow hole 621 on the sealing seat 62 is blocked by the plug body 6121, thereby cutting off the gas supply. At the same time, a side of the plug body 6121 close to the sealing seat 62 is chamfered to form a first conical surface 6124, and a side of the plug body 6121 close to the support body 611 is also chamfered to form a second conical surface 6125, which not only facilitates the flow of gas in the fluid channel 112, thereby increasing the flow rate, but also facilitates the formation of a seal with the flow hole 621, thereby improving the reliability of the seal and ensuring the stability of the gas cut-off.

[0044] Fig. 9 FIG. 2 is a cross-sectional view of a sealing seat of a preferred embodiment of the present invention. Figure 1 and Fig. 9 As shown, a conical reaming hole 622 is provided on one side of the sealing seat 62 close to the plug body 6121, and the conical reaming hole 622 is connected to the flow hole 621. Preferably, a chamfer or rounded corner can be provided at the connection between the conical reaming hole 622 and the flow hole 621, so that the plug body 6121 with the first conical surface 6124 can better cooperate with the conical reaming hole 622, and at the same time, the reliability of the sealing between the first conical surface 6124 and the flow hole 621 can be ensured, thereby improving the effect of gas cutting off and making the structure more reasonable.

[0045] More specifically, a first step groove 14 is provided in the valve body cavity 11 of the valve body 1 and between the fluid inlet 111 and the fluid channel 112, and the side of the baffle 6112 facing away from the bushing 6111 abuts against the first step groove 14, providing a fixed basis for the baffle 6112, and also providing a fixed reference for the expansion and contraction of the sealing spring 6113. In addition, the setting of the first step groove 14 can make the cross-sectional area of ​​the fluid channel 112 on which the baffle 6112 is installed larger than the cross-sectional area of ​​the fluid inlet 111, thereby making the size of the baffle 6112 larger, thereby making the cross-sectional area of ​​the flow channel 6117 on the second bracket 6115 of the baffle 6112 larger, thereby increasing the flow area, improving the flow rate, and making the structure more reasonable.

[0046] More specifically, a second step groove 15 is provided in the valve body cavity 11 of the valve body 1 and in the fluid channel 112. The second step groove 15 is located at the sealing seat 62 and close to the side of the support body 611. The sealing seat 62 is tightly fitted in the second step groove 15, so that the installation of the sealing seat 62 is more secure, and the reliability of gas shut-off is improved. In addition, the cross-sectional area of ​​the fluid outlet 113 is larger than the cross-sectional area of ​​the fluid channel 112, and the cross-sectional area of ​​the fluid channel 112 is larger than the cross-sectional area of ​​the fluid inlet 111, so that the components in the valve body 1 can be installed in the valve body cavity 11 in sequence from one end of the fluid outlet 113, making the manufacture of the valve body 1 more convenient.

[0047] More specifically, the temperature sensing component 7 arranged in the temperature sensing accommodating chamber 13 of the valve body 1 includes a limit member 71, a positioning plate 72, a temperature sensing flap 73, a heat conductive member 74 and a base 75. The temperature sensing component 7 is fixed in the temperature sensing accommodating chamber 13 by a cover 131. The base 75 is arranged in a "U"-shaped structure, and the opening of the base 75 faces the fluid channel 112. The limit member 71 is arranged on the positioning plate 72 and is located on the side of the positioning plate 72 close to the fluid channel 112, and the positioning plate 72 is slidably arranged in the base 75. In addition, the limit member 71 can selectively extend into the fluid channel 112 and contact the support body 611. The temperature sensing flap 73 is arranged in the base 75 and is located on the side of the positioning plate 72 away from the limit member 71, and the heat conductive member 74 is arranged between the base 75 and the cover 131.

[0048] Fig.10 This is a structural diagram of a preferred embodiment of the present invention in a cut-off state. Figure 1 and Fig.10 As shown, under normal circumstances, the sealing spring 6113 is in a compressed state, the baffle 6112 and the sleeve 6111 of the support body 611 are both located on the side of the limiting body close to the fluid inlet 111, and the sleeve 6111 is stuck by the limiting body, the plug body 6121 and the sealing seat 62 are separated, and the gas enters from the fluid inlet 111 and reaches the flow hole 621 of the sealing seat 62 through the fluid channel 112, and then is discharged from the fluid outlet 113. When an external environmental accident causes high temperature, when the high temperature sensed by the outside world is transferred to the temperature-sensing flap 73 through the heat conductive member 74, the temperature-sensing flap 73 is sunken, so that the positioning plate 72 drives the limiting member 71 to shrink into the temperature-sensing accommodating chamber 13, thereby causing the limiting member 71 to separate from the bushing 6111. At this time, the bushing 6111 slides toward one side of the sealing seat 62 under the force generated by the resetting of the sealing spring 6113, thereby driving the plug body 6121 to approach the sealing seat 62, so that the flow hole 621 on the sealing seat 62 is blocked by the plug body 6121, thereby cutting off the gas, thereby avoiding the occurrence of greater safety accidents.

[0049] Fig.13This is a structural diagram of another preferred embodiment of the present invention showing another orientation of the temperature sensing chamber. Figure 1 and Fig.13 As shown, in addition to being set downward, the temperature sensing accommodating chamber 13 on the valve body 1 can also be set on the side of the valve body 1, so that the temperature sensing accommodating chamber 13 is set laterally, and the temperature sensing component 7 in the temperature sensing accommodating chamber 13 is also set laterally, thereby meeting the use requirements of the side of the valve body 1 in areas prone to accidents, making it easier to obtain temperature change information, improving the timeliness of gas shut-off, and making the structure more reasonable. Compared with the split form of screwing the temperature sensing accommodating chamber 13 on the valve body 1, it avoids the problem of being unable to ensure the orientation of the temperature sensing element 7 due to being unable to ensure the screw-in angle of the temperature sensing accommodating chamber 13, and has higher adaptability.

[0050] The integrated high-temperature cut-off gas ball valve provided in the present embodiment has an integrated valve body cavity 11 arranged in the valve body 1, so that there is no connection point between the cut-off component 6 and the fluid inlet 111, thereby avoiding the problem of gas cut-off failure caused by high temperature damaging the connection point, and improving the reliability of gas cut-off. The valve body 1 and the temperature sensing accommodating cavity 13 are an integrated structure, so that the orientation of the temperature sensing accommodating cavity 13 on the valve body 1 can be changed, thereby satisfying the requirement of aligning the temperature sensing accommodating cavity 13 with the direction in which accidents are prone to occur, thereby improving adaptability. In addition, the temperature sensing component 7 for sensing temperature is arranged outside the valve body 1, and the temperature sensing component 7 uses a ball as a limiter 71 to limit the cut-off component 6, which can quickly and accurately sense changes in the external temperature, thereby improving the valve's sensitivity to gas cut-off and better meeting the use conditions of gas applications.

[0051] Embodiment 2:

[0052] Fig.11 It is a structural diagram of another preferred embodiment of the present invention in a normal state; Fig.12 This is a structural diagram of another preferred embodiment of the present invention in a cut-off state. Fig.11 and Fig.12 As shown, the integrated high-temperature cut-off gas ball valve provided in this embodiment includes all the structures described in Embodiment 1 except the temperature sensing component 7.

[0053] Specifically, the temperature sensing component 7 arranged in the temperature sensing accommodating chamber 13 of the valve body 1 includes a limit member 71, a positioning plate 72, a limit spring 76 and a temperature sensing deformation member 77. The positioning plate 72 is slidably arranged in the temperature sensing accommodating chamber 13, and a sliding hole is provided in the center of the positioning plate 72. A gap is arranged between the positioning plate 72 and the sealing cover 131, and a temperature sensing deformation member 77 is arranged on one side of the gap close to the bottom of the sealing cover 131, so that the temperature sensing deformation member 77 can be more quickly and accurately sensed to change in external temperature and deform. The temperature sensing deformation member 77 is protruded toward one side of the positioning plate 72 under normal conditions, and is recessed toward one side of the sealing cover 131 under high temperature conditions. In addition, the limiting member 71 is arranged in an "⊥" shape, and the limiting member 71 includes a limiting end 711 and a supporting end 712 arranged at the bottom of the limiting end 711 and perpendicular to the limiting end 711. The limiting end 711 is inserted in the sliding hole, and the end of the limiting end 711 away from the supporting end 712 can selectively extend into the fluid channel 112 and contact the support body 611. The limiting end 711 can be used to limit the support body 611, so that the cutting body 612 is limited to a position away from the sealing seat 62 to achieve normal supply of gas, and the supporting end 712 is located in the gap and between the positioning plate 72 and the temperature-sensitive deformation member 77. At the same time, the limiting end 711 is also provided with a limiting spring 76, and one end of the limiting spring 76 abuts on the abutting end 712, and the other end abuts on the positioning plate 72.

[0054] In a normal state, the temperature-sensitive deformation member 77 is in a state of protruding toward one side of the positioning plate 72. At this time, the side of the limiting end 711 away from the abutting end 712 is inserted into the fluid channel 112 and limits the support body 611 to the side of the limiting member 71 close to the fluid inlet 111, and the limiting spring 76 sleeved on the limiting end 711 is in a compressed state, so that there is a gap between the cutting body 612 and the sealing seat 62, ensuring the normal supply of gas; when the external environment accident causes high temperature, the temperature-sensitive deformation member 77 quickly and accurately obtains The temperature information is obtained and deformation occurs, changing from the original protruding state to the concave state. At this time, the limiting member 71 shrinks toward the temperature sensing accommodating chamber 13 under the force generated when the limiting spring 76 is restored, so that the limiting member 71 and the supporting body 611 are separated, so that the cutting body 612 approaches and fits the sealing seat 62 under the action of the sealing spring 6113, thereby realizing the sealing of the flow hole 621 on the sealing seat 62 by the cutting body 612, thereby blocking the supply of gas and improving the safety of gas application.

[0055] The integrated high-temperature cut-off gas ball valve provided in the present embodiment also has an integrated valve body cavity 11 arranged in the valve body 1, so that there is no connection point between the cut-off component 6 and the fluid inlet 111, thereby avoiding the problem of gas cut-off failure caused by high temperature damage to the connection point, and improving the reliability of gas cut-off. The valve body 1 and the temperature-sensing accommodating cavity 13 are an integrated structure, so that the orientation of the temperature-sensing accommodating cavity 13 on the valve body 1 can be changed, thereby satisfying the requirement of aligning the temperature-sensing accommodating cavity 13 with the direction in which accidents are prone to occur, thereby improving adaptability. In addition, the temperature-sensing component 7 for sensing temperature is arranged outside the valve body 1, and another "⊥"-shaped limiter 71 is provided to achieve the limit of the cut-off component 6, which can also quickly and accurately sense changes in the external temperature, thereby improving the sensitivity of the valve body 1 to gas cut-off and better meeting the use conditions of gas applications.

[0056] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated high-temperature cut-off gas ball valve, comprising a valve body, a ball, a valve seat, a valve cover and a handle, wherein a valve body cavity is opened in the valve body, the valve body cavity comprises a fluid inlet, a fluid outlet and a fluid channel connecting the fluid inlet and the fluid outlet, and the ball and the valve seat are arranged in the valve body cavity and at one end close to the fluid outlet, and the valve cover is screwed on the fluid outlet, an outwardly protruding convex neck is arranged on the valve body and in the area corresponding to the ball, a valve stem is connected to the ball, and the end of the valve stem away from the ball passes through the convex neck and is connected to the handle, characterized in that: The fluid inlet, the fluid outlet and the fluid channel are an integrated structure, a cut-off component is provided in the valve body cavity and at one end close to the fluid inlet, and at the same time, a protruding temperature sensing chamber is provided on the valve body and at a region corresponding to the cut-off component, the temperature sensing chamber is communicated with the fluid channel, a temperature sensing component is provided in the temperature sensing chamber, and a cover is provided in the temperature sensing chamber and at a side of the temperature sensing component away from the fluid channel, the temperature sensing component can selectively extend into the fluid channel and clamp the cut-off component, wherein, The cutting assembly comprises a cutting structure and a sealing seat, wherein the cutting structure and the sealing seat are sequentially arranged in the fluid channel along the direction from the fluid inlet to the fluid outlet, and a flow hole is provided on the sealing seat. The cutting structure further comprises a supporting body and a cutting body, wherein the supporting body is arranged in the fluid channel and has a flow channel, and the cutting body is slidably arranged on the supporting body and can reciprocate in a direction close to or away from the sealing seat; The support body comprises a bushing and a baffle, the bushing and the baffle are arranged side by side and in parallel, the baffle is fixed in the fluid channel and close to one end of the fluid inlet, the bushing is slidably arranged in the fluid channel and located on the side of the baffle away from the fluid inlet, a plugging spring is arranged between the bushing and the baffle, and the bushing and the baffle are both arranged in an annular shape, a first bracket is arranged on the inner side of the bushing, a second bracket is arranged on the inner side of the baffle, and a positioning hole is opened in the center of the first bracket and the second bracket, and a plurality of the flow channels are distributed in an annular array on the first bracket and the second bracket on the outer side of the positioning hole; A first step groove is provided in the valve body cavity and between the fluid inlet and the fluid channel, and a side of the baffle away from the bushing abuts against the first step groove; A second step groove is provided in the valve body cavity and in the fluid channel, the second step groove is located at the sealing seat and close to one side of the support body, and the sealing seat is tightly fitted in the second step groove; The temperature sensing component includes a limiter, a positioning plate, a temperature sensing flap, a heat conducting member and a base, wherein the base is arranged in a "U"-shaped structure, the opening of the base faces the fluid channel, the limiter is arranged on the positioning plate and is located on a side of the positioning plate close to the fluid channel, the positioning plate is slidably arranged in the base, and the limiter can selectively extend into the fluid channel and contact the support body, the temperature sensing flap is arranged in the base and is located on a side of the positioning plate away from the limiter, and the heat conducting member is arranged between the base and the cover; The locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the bottom of the locking plate, and the locking plate is provided at the locking plate.

2. The integrated high temperature cut-off gas ball valve according to claim 1, characterized in that: The positioning holes on the first bracket and the second bracket are coaxially arranged, and the flow channels on the first bracket and the second bracket are also arranged to be directly opposite to each other.

3. The integrated high temperature cut-off gas ball valve according to claim 2, characterized in that: The cutting body includes a plug body and a connecting rod, the plug body is arranged between the support body and the sealing seat, a threaded hole is opened in the middle of the plug body along the direction from the support body to the sealing seat, one end of the connecting rod is screwed into the threaded hole, and the other end of the connecting rod is inserted into the positioning holes on the first bracket and the second bracket. At the same time, a chamfer is provided on the side of the plug body close to the sealing seat to form a first conical surface, and a chamfer is also provided on the side of the plug body close to the support body to form a second conical surface.

4. The integrated high temperature cut-off gas ball valve according to claim 3, characterized in that: A conical expansion hole is provided on one side of the sealing seat close to the plug body, and the conical expansion hole is communicated with the flow hole.

5. The integrated high temperature cut-off gas ball valve according to claim 1, characterized in that: The limiting member is spherical in shape, a receiving hole is provided at the center of the positioning plate, and the limiting member is embedded in the receiving hole.

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